Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 9222. Отображено 100.
03-01-2013 дата публикации

Scroll compressor

Номер: US20130004354A1
Автор: Ikseo Park, Kyunghwan Kim, Myungkyun KIEM
Принадлежит: LG ELECTRONICS INC

A scroll compressor including a fixed scroll having a fixed wrap; and an orbiting scroll having an orbiting wrap engaged with the fixed wrap to form compression chambers, and performing an orbital motion with respect to the fixed scroll, wherein at least one of the fixed wrap and the orbiting wrap has a first constant section, a variable section, and a second constant section consecutively formed in a direction from a wrap final end to a wrap initial end.

Подробнее
Номер записи: 1
07-03-2013 дата публикации

Hermetic electric compressor

Номер: US20130057120A1
Автор: Masanari Uno, Yogo Takasu, Yoshiyuki Kimata
Принадлежит: Mitsubishi Heavy Industries Ltd

An object is to provide a hermetic electric compressor that can simplify the installation structure of an internal protector and improve the ease-of-assembly thereof. In a hermetic electric compressor having a compressor and an electric motor ( 10 ) built into a sealed housing ( 2 ), the electric motor ( 10 ) includes a stator ( 8 ) to which plastic insulating bobbins ( 30 ) having flanges ( 30 B, 30 C) on an inner and outer circumferences of a plurality of tooth parts of a stator core are fitted and around which a stator winding wire ( 8 A) is wound in concentrated winding around the plastic insulating bobbins ( 30 ), and an internal protector ( 29 ) for electric-motor protection is latched between the inner and outer circumferential flanges ( 30 B, 30 C) of the plastic insulating bobbins ( 30 ) by being urged against the stator winding wire ( 8 A).

Подробнее
Номер записи: 2
02-05-2013 дата публикации

SCROLL COMPRESSOR

Номер: US20130108496A1
Автор: Iida Noboru, Karino Tsuyoshi, Nakai Hiroaki, Ohno Ryuichi, Oyagi Shingo, Yoshida Hirofumi
Принадлежит: Panasonic Corporation

A scroll compressor employs therein a refrigerant having a small global warming potential and a small ozone depletion potential and mainly comprising hydrofluoroolefin having a carbon-carbon double bond. A stationary scroll has and end plate and a discharge port defined in the end plate at a central portion thereof so as to open into a discharge chamber. The stationary scroll also has a bypass hole defined in the end plate to allow a plurality of compression chambers to communicate with the discharge chamber before the compression chambers communicate with the discharge port. A check valve is provided on the bypass hole to allow the refrigerant to flow from the compression chambers to the discharge chamber. This construction can restrain a baneful influence on the global environment, reduce a temperature increase caused by excessive compression, and restrain decomposition of the refrigerant even in long-term use. 1. A scroll compressor employing therein a single-component refrigerant mainly comprising hydrofluoroolefin having a carbon-carbon double bond or a mixture refrigerant containing this refrigerant , the scroll compressor comprising:a stationary scroll having a stationary end plate and a stationary scroll wrap rising up from the stationary end plate, the stationary end plate having a discharge port defined therein at a central portion thereof so as to open into a discharge chamber; andan orbiting scroll having an orbiting end plate and an orbiting scroll wrap rising up from the orbiting end plate, the orbiting scroll being held in engagement with the stationary scroll to define a plurality of compression chambers therebetween, whereinthe stationary end plate has a bypass hole defined therein to allow the compression chambers to communicate with the discharge chamber before the compression chambers communicate with the discharge port, anda check valve is provided on the bypass hole to allow the refrigerant to flow from the compression chambers to the discharge ...

Подробнее
Номер записи: 3
16-05-2013 дата публикации

COMPRESSOR DIGITAL CONTROL FAILURE SHUTDOWN ALGORITHM

Номер: US20130121843A1
Автор: Dotzenrod Ryan J., Gustafson Alan D., Ma YoungChan, Sule Titilope Z., VIEGAS Herman H.
Принадлежит: THERMO KING CORPORATION

A method of controlling the loading and unloading of a compressor includes selectively loading and unloading a compressor by engaging and disengaging, respectively, compressor members with the controller in response to system load data, monitoring at least one of the discharge pressure and the suction pressure at a predetermined time interval for a continuous time period, storing values based on the at least one of the discharge pressure and the suction pressure during the continuous time period, and determining a predetermined value indicative of compressor operation in which the compressor members are engaged. The method further includes comparing at least one of the stored values with the predetermined value and providing a signal to cease operation of the compressor when the comparison fails to indicate compressor operation in which the compressor members are engaged. 1. A method of controlling the loading and unloading of a compressor , the method comprising:selectively loading and unloading a compressor by engaging and disengaging, respectively, compressor members with the controller in response to system load data:loading the compressor to increase a fluid pressure from a suction pressure to a discharge pressure when the compressor members are engaged;unloading the compressor when the compressor members are disengaged;monitoring at least one of the discharge pressure and the suction pressure at a predetermined time interval for a continuous time period;storing values based on the at least one of the discharge pressure and the suction pressure during the continuous time period;determining a predetermined value indicative of compressor operation in which the compressor members are engaged;comparing at least one of the stored values with the predetermined value;providing a signal to cease operation of the compressor when the comparison fails to indicate compressor operation in which the compressor members are engaged.2. The method of claim 1 , further including ...

Подробнее
Номер записи: 4
23-05-2013 дата публикации

Robust electric screw compressor blocked air line detection via motor current monitoring

Номер: US20130129527A1
Автор: Marv Hamdan
Принадлежит: BENDIX COMMERCIAL VEHICLE SYSTEMS LLC

Systems and methods for detecting a blocked air discharge line of an air compressor are described, which include monitoring motor current (IMTR) drawn by a compressor motor, and calculating a three-point moving average for a steady state current drawn by the compressor motor upon the motor reaching steady state (nominal) operating speed. After expiration of a predetermined time period T 1 that commences upon the compressor motor reaching steady state speed, a determination is made regarding whether a difference between a current drawn by the compressor motor and the three-point moving average has exceeded a predetermined current value I 2 and is consistent with a current profile indicative of a blocked air line. If a blocked air line is detected, a compressor shut-off command is generated and transmitted to the compressor motor to shut the compressor motor off prior to opening of a safety valve on the compressor.

Подробнее
Номер записи: 5
20-06-2013 дата публикации

Compressor protection and diagnostic system

Номер: US20130156607A1
Автор: Nagaraj Jayanth
Принадлежит: Emerson Climate Technologies Inc

A compressor diagnostic device is provided and includes at least one of a temperature sensor and a current sensor. The current sensor measures a first current flow through a motor of a refrigerant compressor. The temperature sensor is disposed within and sensing a temperature of a measurement region of an electrical conductor that is configured to close and open to allow and prevent current flow to the motor, respectively. The compressor diagnostic device also includes a controller in communication with the at least one of the current sensor and the temperature sensor. The controller is operable to control the electrical conductor based on a comparison of a second current flow through the motor and a maximum current.

Подробнее
Номер записи: 6
27-06-2013 дата публикации

SCROLL COMPRESSOR

Номер: US20130164164A1
Автор: ADACHI Tooru, Fukumoto Minoru, Kusano Kiyozumi, Ogawa Nobuaki
Принадлежит: Panasonic Corporation

In a scroll compressor of the present invention, a fixed scroll and an orbiting scroll are meshed with each other such that spiral laps of the fixed scroll and the orbiting scroll inwardly face each other, an Oldham ring is provided between the main bearing member and the orbiting scroll and a key portion of the Oldham ring is inserted into a key groove of the main bearing member Grooves are formed in Oldham ring sliding surfaces on both sides of the key groove . According to this configuration, the Oldham ring and the main bearing member can be restrained from coming into contact with each other in the vicinity of the bearing key groove , and restrained from vibrating, and it is possible to provide an inexpensive scroll compressor of low noise. 1. A scroll compressor in which an orbiting scroll is provided between a main bearing member and a fixed scroll ,the fixed scroll and the orbiting scroll are meshed with each other such that spiral laps of the fixed scroll and the orbiting scroll inwardly face each other,an Oldham ring is provided between the main bearing member and the orbiting scroll, anda key portion of the Oldham ring is inserted into a key groove of the main bearing member, whereingrooves are formed in Oldham ring sliding surfaces on both sides of the key groove.2. The scroll compressor according to claim 1 , wherein a portion of each of the grooves in a sliding direction of the Oldham ring has a slope shape.3. The scroll compressor according to claim 1 , wherein relief grooves are formed in both sides of the key portion claim 1 , and the grooves are separated from the key groove.4. The scroll compressor according to claim 1 , wherein the grooves are laterally symmetrically formed in ranges of 60% or less of a diameter of the Oldham ring with respect to the key groove.5. The scroll compressor according to claim 1 , wherein the grooves are laterally symmetrically formed in ranges of 45° or less on left and right sides with respect to the key groove. The ...

Подробнее
Номер записи: 7
11-07-2013 дата публикации

System and method for compressor motor protection

Номер: US20130176649A1
Автор: Frank S. Wallis, Joseph James Rozsnaki
Принадлежит: Emerson Climate Technologies Inc

A system includes a refrigerant compressor including an electric motor, a current sensor that measures current flow to the electric motor, a switching device configured to close and open to allow and prevent current flow to the electric motor, respectively, a maximum continuous current (MCC) device that includes a resistance corresponding to a maximum continuous current for the electric motor, and a motor protection module. The motor protection module communicates with the MCC device, the current sensor, and the switching device and determines a first MCC value for the electric motor as a function of the resistance of the MCC device. The motor protection module also selectively sets a predetermined MCC to the first MCC and controls the switching device based on a comparison of the current flow to the electric motor and the predetermined MCC.

Подробнее
Номер записи: 8
25-07-2013 дата публикации

DIFFERENTIAL PRESSURE REGULATING VALVE AND MOTOR-DRIVEN COMPRESSOR HAVING DIFFERENTIAL PRESSURE REGULATING VALVE

Номер: US20130189143A1
Автор: GENNAMI Hiroyuki, INAGAKI Tomoyoshi, KUROKI Kazuhiro, TSUBAI Shinji, YAMASHITA Takuro, YOKOI Kenji
Принадлежит: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

A differential pressure regulating valve is disposed in a fluid passage. The differential pressure regulating valve includes a valve chamber, a valve hole, a valve body, a support member and an urging member. The valve chamber is formed in the fluid passage and having a cylindrical shape. The valve hole is formed in the fluid passage as an opening which communicates with the valve chamber. The valve body is disposed in the valve chamber and adapted to open and close the valve hole. The support member is fixedly mounted to the valve chamber and extending across flowing direction of the fluid in the valve chamber. The support member has a communication passage for fluid communication between a first valve chamber and a second valve chamber. The urging member is disposed between the support member and the valve body for urging the valve body toward the valve hole. 1. A differential pressure regulating valve disposed in a fluid passage for fluid flowing through a compressor , the differential pressure regulating valve comprising:a valve chamber formed in the fluid passage and having a cylindrical shape;a valve hole formed in the fluid passage as an opening which communicates with the valve chamber;a valve body disposed in the valve chamber and adapted to open and close the valve hole;a support member fixedly mounted to the valve chamber and extending across flowing direction of the fluid in the valve chamber, the support member having a communication passage for fluid communication between a first valve chamber formed on the valve body side of the support member in the valve chamber and a second valve chamber formed on the opposite side of the support member in the valve chamber, at least a part of the communication passage opened at uniformly spaced intervals to the outer periphery of the support member on the first valve chamber side; andan urging member disposed between the support member and the valve body for urging the valve body toward the valve hole, the urging ...

Подробнее
Номер записи: 9
25-07-2013 дата публикации

SCROLL COMPRESSOR

Номер: US20130189144A1
Автор: Nishide Youhei, Tsuka Yoshitomo, Yamamoto Masateru
Принадлежит: DAIKIN INDUSTRIES, LTD.

A scroll compressor includes a high-pressure space capable of communicating with a discharge port and a back pressure space capable of communicating with an intermediate port. A fluid passage includes a seal ring that closes the fluid passage when the pressure of the back pressure space is lower than that of the high-pressure space, and opens the fluid passage when the pressure of the back pressure space is higher than that of the high-pressure space. 1. A scroll compressor , comprising:a casing;a rotary compression mechanism housed in the casing, and including a compression chamber formed by engaging a fixed scroll and an orbiting scroll with each other;a discharge port located in the compression mechanism and being open at a discharge position of the compression chamber;an intermediate port located in the compression mechanism and being open at an intermediate position of the compression chamber;a forming member located in the casing and including a back pressure space and at least part of a fluid passage, the back pressure space facing a back surface of the orbiting scroll and communicating with the intermediate port, the fluid passage allowing a high-pressure space communicating with the discharge port and the back pressure space to communicate with each other; andan opening/closing mechanism configured to close the fluid passage when a pressure of the back pressure space is lower than that of the high-pressure space, and open the fluid passage when the pressure of the back pressure space is higher than that of the high-pressure space.2. The scroll compressor of claim 1 , whereinthe opening/closing mechanism is held by a ring groove that is open to the fluid passage of the forming member,the opening/closing mechanism is configured to freely expand and contract between an inner peripheral wall and an outer peripheral wall of the ring groove,the opening/closing mechanism is constituted by a seal ring including: an outer peripheral sealing surface that seals a gap ...

Подробнее
Номер записи: 10
15-08-2013 дата публикации

Pump

Номер: US20130209222A1
Автор: Nigel Schofield
Принадлежит: Edwards Ltd

The present invention relates to a multi-stage vacuum pump having a plurality of compression stages 12, 14, 16, 18 20 and a booster stage 22. The pump 10 is arranged to pump a chamber 24. The pumping stages include respective rotors supported for rotation on one or more common drive shafts 26. A recirculation valve 28 is associated with the booster stage 22 for selective recirculation of pumped fluid from an outlet 32 to an inlet 30 of the booster stage above a predetermined pressure.

Подробнее
Номер записи: 11
22-08-2013 дата публикации

VOLUME RATIO CONTROL SYSTEM AND METHOD

Номер: US20130216414A1
Автор: Comstock Angela Marie, JR. Paul, Kopko William L., Nemit
Принадлежит: Johnson Controls Technology Company

A system and method for controlling the volume ratio of a compressor is provided. The system can use a port () or ports in a rotor cylinder to bypass vapor from the compression chamber to the discharge passage of the compressor. A control valve () can be used to open or close the port or ports to obtain different volume ratios in the compressor. The control valve () can be moved or adjusted by one or more valves that control a flow of fluid to the valve. A control algorithm can be used to control the one or more valves to move the control valve to obtain different volume ratios from the compressor. The control algorithm can control the one or more valves in response to operating parameters associated with the compressor. 1. (canceled)2. A compressor comprising:an intake passage;a discharge passage;a compression mechanism, the compression mechanism being positioned to receive vapor from the intake passage and provide compressed vapor to the discharge passage;a port positioned in the compression mechanism to bypass a portion of the vapor in the compression mechanism to the discharge passage;a valve positioned near the port to control vapor flow through the port;the valve having a first position to permit a first vapor flow from the compression mechanism to the discharge passage, a second position to permit a second vapor flow from the compression mechanism to the discharge passage and a third position to prevent vapor flow from the compression mechanism to the discharge passage;the compressor having a first volume ratio in response to the valve being in the first position, a second volume ratio in response to the valve being in the second position and a third volume ratio in response to the valve being in the third position, the first volume ratio being less than the second volume ratio and the the second volume ratio being less than the third volume ratio;at least one solenoid valve, the at least one solenoid valve being positioned to control a flow of fluid to the ...

Подробнее
Номер записи: 12
19-09-2013 дата публикации

Variable Speed Compressor Protection System And Method

Номер: US20130240043A1
Автор: PHAM Hung M., SEIBEL Stephen M.
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A system and method for a compressor includes a compressor connected to a condenser, a discharge line temperature sensor that outputs a discharge line temperature signal corresponding to a discharge line temperature of refrigerant leaving the compressor, and a control module connected to the discharge line temperature sensor. The control module determines a saturated condenser temperature, calculates a discharge superheat temperature based on the saturated condenser temperature and the discharge line temperature, and monitors a flood back condition of the compressor by comparing the discharge superheat temperature with a predetermined threshold. The control module increases a speed of the compressor or decreases an opening of an expansion valve associated with the compressor when the discharge superheat temperature is less than or equal to the predetermined threshold. 1. A system comprising:a compressor connected to a condenser;a discharge line temperature sensor that outputs a discharge line temperature signal corresponding to a discharge line temperature of refrigerant leaving the compressor;a control module connected to the discharge line temperature sensor, said control module determining a saturated condenser temperature, calculating a discharge superheat temperature based on the saturated condenser temperature and the discharge line temperature, monitoring a flood back condition of the compressor by comparing the discharge superheat temperature with a predetermined threshold, and, when the discharge superheat temperature is less than or equal to the predetermined threshold, increasing a speed of the compressor or decreasing an opening of an expansion valve associated with the compressor.2. The system of wherein the predetermined threshold is thirty degrees Fahrenheit.3. The system of wherein the control module increases the speed of the compressor when the discharge superheat temperature is less than or equal to the predetermined threshold.4. The system of ...

Подробнее
Номер записи: 13
19-09-2013 дата публикации

SCROLL-TYPE FLUID MACHINE

Номер: US20130243635A1
Автор: Matsuo Shiki, WATANABE Kazuhide, YAMAZAKI Hiroshi, Yoshida Takafumi, YOSHIKAWA Genta
Принадлежит: MITSUBISHI HEAVY INDUSTRIES AUTOMOTIVE THERMAL SYSTEMS CO., LTD.

Provided is a scroll-type fluid machine which can reduce deformation of a rotary scroll caused when fixing a bearing into a boss part. A scroll compressor, in which a sealed chamber confining a fluid is formed by a fixed scroll and the rotary scroll meshed together, each of the scrolls having a spiral wall erected on one side face of an end plate, includes: a metallic boss part (C) protruding from the other side face of the end plate of the rotary scroll; a metallic rotary bearing () inserted into the boss part (C); a crankshaft rotating around an axis and including a bush part inserted in the rotary bearing () and rotatably supported by the rotary bearing (); and an insert member () disposed between the boss part (C) and the rotary bearing () and having a thermal expansion coefficient greater than those of the boss part (C) and the rotary bearing (). 1. A scroll-type fluid machine , in which a sealed chamber confining a fluid is formed by a fixed scroll and a rotary scroll meshed together , each of the scrolls having a spiral wall erected on one side face of an end plate , the scroll-type fluid machine comprising:a metallic boss part protruding from the other side face of the end plate of the rotary scroll;a metallic bearing inserted into the boss part;a crankshaft rotating around an axis and including a bush part inserted in the bearing and rotatably supported by the bearing; andan insert member disposed between the boss part and the bearing and having a thermal expansion coefficient greater than those of the boss part and the bearing.2. The scroll-type fluid machine according to claim 1 , whereinthe insert member has a ring shape and is disposed along an inner face of the boss part. The present invention relates to a scroll-type fluid machine in which a sealed chamber confining a fluid is formed by a pair of fixed scroll and rotary scroll meshed together.A scroll compressor, in which a compression chamber is formed by a pair of fixed scroll and rotary scroll ...

Подробнее
Номер записи: 14
26-09-2013 дата публикации

Compressor

Номер: US20130251548A1
Автор: Akihiro Nakashima, Akio Saiki, Masakazu Obayashi, Masami Ohno, Shinichi Sato
Принадлежит: Toyota Industries Corp

A compressor includes a housing, compression unit, discharge chamber, outlet, and oil separation structure. The oil separation structure, which is arranged between the discharge chamber and the outlet, includes an oil reservoir, oil separation compartment, intake passage, exhaust passage, and supply passage. The oil separation compartment is located upward from the oil reservoir. The intake passage, which extends upward from the oil separation compartment, draws refrigerant gas into the oil separation compartment from the discharge chamber to separate lubrication oil from the refrigerant gas. The exhaust passage extends upward from the oil separation compartment and discharges the refrigerant gas in the oil separation compartment out of the housing through the outlet. The supply passage extends upward from the oil separation compartment and has a larger cross-sectional area than the intake passage. The supply passage supplies the oil reservoir with lubrication oil from the oil separation compartment.

Подробнее
Номер записи: 15
21-11-2013 дата публикации

Integrated rotary valve

Номер: US20130306173A1
Автор: Edward S. Czechowski, Jeffrey M. Cavarello, Michael A. Nuchereno, Robert M. Kolodziej
Принадлежит: Cameron International Corp

A system in some embodiments includes a machine block comprising features configured to support moving machine components within a lubricating fluid, wherein the machine block includes an integral valve block configured to route the lubricating fluid through a first filter without a second filter and configured to route the lubricating fluid through the second filter without the first filter. Further embodiments include a method that includes switching circulation of a lubricant between a first filter and a second filter in response to an angular position of a valve disposed in a valve block integral to a machine block having moving components lubricated by the lubricant.

Подробнее
Номер записи: 16
21-11-2013 дата публикации

Scroll refrigeration compressor

Номер: US20130309118A1
Автор: Dominique Gross, Jean-Francois LE COAT, Patrick Jallat, Pierre Ginies, Stephane Watts
Принадлежит: Danfoss Commercial Compressors SA

The scroll compressor includes stationary and moving scrolls each including a scroll plate provided with a spiral wrap, the spiral wraps defining the variable-volume compression chambers, a separating plate mounted on the scroll plate of the stationary scroll and defining with the latter a first intermediate volume, and a delivery chamber defined by the separating plate and the sealed casing. The compressor includes a bypass passage arranged to communicate the first intermediate volume with an intermediate compression chamber, a flow passage arranged to communicate the first intermediate volume with the delivery chamber, and a bypass valve associated with the flow passage, each bypass valve associated with a flow passage mounted on the surface of the separating plate turned toward the delivery chamber and movable between closing and opening positions for closing and opening the flow passage.

Подробнее
Номер записи: 17
16-01-2014 дата публикации

SCROLL COMPRESSOR

Номер: US20140017109A1
Автор: Cameron Alexander Murray, Jones Peter David
Принадлежит: EDWARDS LIMITED

A scroll compressor may include an orbiting scroll having an orbiting scroll wall extending axially from an orbiting scroll plate towards a fixed scroll; a fixed scroll having a fixed scroll wall extending axially from a fixed scroll plate towards the orbiting scroll; and an axially extending drive shaft having an eccentric shaft portion so that rotation of the eccentric shaft portion imparts an orbiting motion to the orbiting scroll relative to the fixed scroll. An axial end portion of the orbiting scroll wall has a first seal for sealing between the orbiting scroll wall and the fixed scroll plate, and an axial end portion of the fixed scroll wall has a second seal for sealing between the fixed scroll wall and the orbiting scroll plate; and the first seal or the second seal has an aspect ratio of axial length to radial width which is 1:1.25 or greater. 1. A scroll compressor comprising:an orbiting scroll;a fixed scroll having a fixed scroll wall extending axially from a fixed scroll plate towards the orbiting scroll, wherein the orbiting scroll has an orbiting scroll wall extending axially from an orbiting scroll plate towards the fixed scroll; andan axially extending drive shaft having an eccentric shaft portion so that rotation of the eccentric shaft portion imparts an orbiting motion to the orbiting scroll relative to the fixed scroll, wherein an axial end portion of the orbiting scroll wall has a first seal for sealing between the orbiting scroll wall and the fixed scroll plate, and an axial end portion of the fixed scroll wall has a second seal for sealing between the fixed scroll wall and the orbiting scroll plate; and wherein the first seal or the second seal has an aspect ratio of axial length to radial width which is 1:1.25 or greater.2. The scroll compressor of claim 1 , wherein the aspect ratio of the first seal or the second seal is 1:1.25 or greater over an entire involute from a pump inlet to a pump outlet.3. The scroll compressor of claim 1 , wherein ...

Подробнее
Номер записи: 18
30-01-2014 дата публикации

COMPRESSOR PROTECTION MODULE

Номер: US20140029178A1
Автор: Barnett Kenneth Ray, JR. Edward J., TRUDEAU
Принадлежит:

An electronic device is provided that may include a housing and an electronic component disposed within the housing. The housing may include a plug configured to engage a terminal assembly extending from a compressor shell and facilitate electrical communication between the plug and the terminal assembly. An exterior surface of the housing may include one or more receptacles extending therethrough in electrical communication with the electronic component. 1. An electronic device including an electronic component disposed within a housing , the housing having a plug configured to engage a terminal assembly extending from a compressor shell and facilitate electrical communication between the plug and the terminal assembly , an exterior surface of the housing including one or more receptacles extending therethrough in electrical communication with the electronic component.2. The electronic device of claim 1 , wherein the plug includes a plug body and a plurality of resiliently flexible tabs configured to snap into engagement with corresponding apertures in a fence of the terminal assembly.3. The electronic device of claim 2 , wherein the plug body includes a plurality of apertures configured to receive conductor pins of the terminal assembly.4. The electronic device of claim 1 , wherein the housing includes a base and a removable cap.5. The electronic device of claim 4 , wherein the cap includes a plurality of resiliently flexible tabs that snap into engagement with the base.6. The electronic device of claim 1 , wherein the one or more receptacles is in electrical communication with a display device disposed remotely from the housing.7. The electronic device of claim 1 , wherein the housing is adapted to selectively engage a first cap having an integral display device and a second cap that is in electrical communication with a remote display device.8. A set of components comprising:a base adapted to be mounted to a compressor and including a first engagement feature ...

Подробнее
Номер записи: 19
06-02-2014 дата публикации

REFRIGERANT SCROLL COMPRESSOR FOR MOTOR VEHICLE AIR CONDITIONING SYSTEMS

Номер: US20140037485A1
Автор: Guntermann Bernd, Heckt Roman, Klotten Thomas, Schneider Peter, Woelk Peter Michael
Принадлежит: VISTEON GLOBAL TECHNOLOGIES, INC.

A refrigerant scroll compressor for a motor vehicle air conditioning system having a fixed scroll, an orbiting scroll engaging with the fixed scroll, wherein the fixed scroll and the orbiting scroll cooperate to compress a refrigerant gas. An intermediate pressure chamber is disposed adjacent the orbiting scroll, an oil return duct provides fluid communication between the intermediate pressure chamber and a high pressure area of the refrigerant scroll compressor, and at least one intermediate pressure duct is formed in one of the orbiting scroll and fixed scroll and is in fluid communication with the intermediate pressure chamber. 1. A refrigerant scroll compressor for a motor vehicle air conditioning system comprising:a fixed scroll;an orbiting scroll engaging with the fixed scroll, wherein the fixed scroll and the orbiting scroll cooperate to compress a refrigerant gas;an intermediate pressure chamber disposed adjacent the orbiting scroll;an oil return duct providing fluid communication between the intermediate pressure chamber and a high pressure area of the refrigerant scroll compressor; andat least one intermediate pressure duct formed in one of the orbiting scroll and the fixed scroll and in fluid communication with the intermediate pressure chamber.2. The refrigerant scroll compressor of claim 1 , wherein the fixed scroll and the orbiting scroll cooperate to define a plurality of cavities intermediate the fixed scroll and the orbiting scroll claim 1 , wherein the at least one intermediate pressure duct is in fluid communication with at least one of the plurality of cavities and is configured to facilitate a flow of the refrigerant gas between the at least one of the plurality of cavities and the intermediate pressure chamber.3. refrigerant scroll compressor of claim 1 , further comprising an oil extraction duct in fluid communication with the intermediate pressure chamber.4. The refrigerant scroll compressor of claim 3 , further comprising an expansion device ...

Подробнее
Номер записи: 20
13-02-2014 дата публикации

SCROLL COMPRESSOR HAVING ADJUSTABLE SPACERS

Номер: US20140044582A1
Автор: Collie Clive Frederick
Принадлежит: EDWARDS LIMITED

A scroll compressor comprises: housing orbiting scroll and fixed scroll The drive shaft has an eccentric shaft portion so that rotation of the eccentric shaft portion imparts an orbiting motion to the orbiting scroll relative to the fixed scroll. Axial spacers are located between the fixed scroll and the housing for spacing the fixed scroll relative to the orbiting scroll. When the scroll compressor is assembled and tested and it is desired to perform shimming, the fixed scroll can be removed and a selected spacer placed in position prior to re-assembling the fixed scroll. 1. A method comprising:removing a fixed scroll from a housing of a scroll compressor comprising a fixed scroll and an orbiting scroll;replacing a first axial spacer from a plurality of axial spacers between the housing and the fixed scroll with a replacement axial spacer, wherein the replacement axial spacer defines a different axial thickness than the first axial spacer, and wherein the plurality of axial spacers and the replacement axial spacer define a spacing in at least one of an axial direction or an angular alignment between a fixed scroll and an orbiting scroll of a scroll compressor; andfixing the fixed scroll to the housing.2. The method of claim 1 , wherein respective axial spacers of the plurality of axial spacers are located at generally equal angles with respect to a central axis of the compressor.3. The method of claim 1 , wherein at least one of the housing or the fixed scroll comprises means for locating the plurality of axial spacers in position between the fixed scroll and the housing claim 1 , and wherein replacing the first axial spacer from the plurality of axial spacers between the housing and the fixed scroll with the replacement axial spacer comprises removing the first axial spacer from a respective one of the means for location the plurality of axial spacers and locating the replacement axial spacer4. The method of claim 1 , wherein each of the plurality of axial spacers ...

Подробнее
Номер записи: 21
06-03-2014 дата публикации

Capacity Modulated Scroll Compressor

Номер: US20140064999A1
Автор: Sunil Annappa Magadum, Vinayak Madanrao Juge
Принадлежит: Emerson Climate Technologies Inc

A compressor including a housing defining a suction pressure region and a discharge pressure region includes first and second scroll members forming compression pockets. A first chamber located on the first end plate of the first scroll member includes first and second passages and a first aperture extending therethrough and in communication with the first chamber. The first aperture provides communication between a compression pocket and the first chamber. A modulation assembly is located in the first chamber and includes a heater and a thermal valve. The valve is displaceable from a first position that isolates the first passage from the second passage and a second position that permits communication between the first and second passages. The valve is displaced as a result of a temperature change provided by the heater.

Подробнее
Номер записи: 22
13-03-2014 дата публикации

COMPRESSOR HAVING CAPACITY MODULATION ASSEMBLY

Номер: US20140072466A1
Автор: Akei Masao, DOEPKER Roy J.
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A compressor may include a shell, first and second scrolls, a seal assembly, a modulation control chamber, and a modulation control valve. The first scroll may include a first end plate having a biasing passage extending therethrough. The seal assembly may isolate a discharge pressure region from a suction pressure region. The seal assembly and the first scroll may define an axial biasing chamber therebetween that communicates with the axial biasing chamber and a first pocket between the first and second scrolls. The modulation control chamber may be fluidly coupled with the biasing chamber by a first passage. The modulation control valve may be fluidly coupled with the modulation control chamber by a second passage and movable between a first position allowing communication between the second passage and the suction pressure region and a second position restricting communication between the second passage and the suction pressure region. 1. A compressor comprising:a shell assembly defining a suction pressure region and a discharge pressure region;a first scroll member disposed within said shell assembly and including a first end plate having a discharge passage, a first spiral wrap extending from said first end plate and a biasing passage extending through said first end plate;a second scroll member disposed within said shell assembly and including a second end plate having a second spiral wrap extending therefrom, said first and second spiral wraps meshingly engaged with each other and forming a series of pockets therebetween;a seal assembly engaging said first scroll member and isolating said discharge pressure region from said suction pressure region, said seal assembly and said first scroll member defining an axial biasing chamber therebetween, said biasing passage being in communication with a first of said pockets and said axial biasing chamber;a modulation control chamber fluidly coupled with said axial biasing chamber by a first passage; anda modulation ...

Подробнее
Номер записи: 23
03-04-2014 дата публикации

MOTOR-DRIVEN COMPRESSOR AND AIR CONDITONER

Номер: US20140090412A1
Автор: EGAWA Satoru, FUKASAKU Hiroshi, NAJIMA Kazuki
Принадлежит: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

A motor-driven compressor includes a housing assembly, a compression mechanism, an electric motor, a discharge port, an outlet, a discharge passage, discharge valve and a valve device. The compression mechanism is accommodated in the housing assembly. The electric motor drives the compression mechanism. The discharge chamber is formed in the housing assembly. The discharge port is formed in the housing assembly for communication between the discharge chamber and the compression mechanism. The outlet is formed in the housing assembly for communication with an external circuit. The discharge passage is formed in the housing assembly for communication between the discharge chamber and the outlet. The discharge valve is disposed in the discharge chamber for opening and closing the discharge port. The valve device is configured to adjust an opening of the discharge passage. 1. A motor-driven compressor comprising:a housing assembly;a compression mechanism accommodated in the housing assembly;an electric motor driving the compression mechanism;a discharge chamber formed in the housing assembly;a discharge port formed in the housing assembly for communication between the discharge chamber and the compression mechanism;an outlet formed in the housing assembly for communication with an external circuit;a discharge passage formed in the housing assembly for communication between the discharge chamber and the outlet;a discharge valve disposed in the discharge chamber for opening and closing the discharge port; anda valve device configured to adjust an opening of the discharge passage.2. The motor-driven compressor according to claim 1 , wherein the motor driven compressor further includes an inverter configured to control an operation of the electric motor claim 1 , the valve device is electrically connected to the inverter and the valve device is controlled in accordance with a value of current output from the inverter.3. The motor-driven compressor according to claim 2 , ...

Подробнее
Номер записи: 24
10-04-2014 дата публикации

PORTABLE AIR COMPRESSOR/GENERATOR CONTROL METHOD AND SYSTEM

Номер: US20140097165A1
Автор: Kropp Eric M., Leisner John C.
Принадлежит: ILLINOIS TOOL WORKS INC.

A welding system is provided that includes an engine, a compressor coupled to the engine, and a regulator coupled to the compressor and located on a control panel. Another welding system is provided that includes an engine, a compressor coupled to the engine and a monitor circuit configured to monitor the duration of operation of the compressor by monitoring engagement of the clutch. A pressure gauge configured to be coupled to a compressor is also provided. 1. A system , comprising:an engine;a welding generator coupled to the engine;a compressor coupled to the engine; anda regulator coupled to the compressor and located on a control panel, wherein the control panel is accessible to an operator outside a chassis containing the engine, the welding generator, and the compressor.2. The system of claim 1 , wherein the compressor comprises a rotary screw compressor.3. The system of claim 1 , wherein the control panel comprises a pressure gauge coupled to the compressor.4. The system of claim 1 , comprising an automatic shutoff configured to disengage or terminate operation of the compressor based on a sensed pressure at least near or exceeding a critical pressure.5. The system of claim 4 , wherein the compressor is coupled to the engine by a clutch and the automatic shutoff is configured to control the clutch.6. The system of claim 1 , wherein the regulator comprises a user control adjustable without the use of tools.7. The system of claim 1 , comprising a torch claim 1 , a spray gun claim 1 , a tool claim 1 , or a combination thereof claim 1 , connected to the compressor.8. The system of claim 1 , wherein the regulator is configured to adjust a pressure generated by the compressor.9. A system claim 1 , comprising:an engine;a welding generator coupled to the engine;a compressor coupled to the engine; anda control system configured to automatically reduce a pressure of the compressor when the pressure reaches a maximum pressure.10. The system of claim 9 , wherein the ...

Подробнее
Номер записи: 25
10-04-2014 дата публикации

ROTARY COMPRESSOR

Номер: US20140099218A1
Автор: HIWATA AKIRA, Ogata Takeshi
Принадлежит: Panasonic Corporation

A rotary compressor of the present invention includes a compression mechanism , a motor , a suction path , a communication passage and an on-off valve as a control mechanism . The rotary compressor further includes an interior space , a first check valve and a second check valve . If the on-off valve opens, a volume of the operation chamber is reduced and with this reduction in the volume, the first check valve opens. Pressure in the operation chamber does not rise. At this time, the rotary compressor is operated with substantially zero suction volume. If the on-off valve is closed, the rotary compressor is operated with a normal suction volume. 1. A rotary compressor in which a compression mechanism comprises:a cylinder;a piston disposed in the cylinder;a frame which rotatably holds a shaft, which covers both upper and lower sides of the cylinder, and which forms an operation chamber between the frame and an inner peripheral surface of the cylinder; anda vane which partitions the operation chamber into a suction chamber and a compression-discharge chamber, and in whicha motor operates the piston through the shaft, whereinthe rotary compressor comprises:a hermetic container in which the compression mechanism and the motor are accommodated;a suction path for guiding working fluid to be compressed to the suction chamber;a discharge port which is provided in the frame, and through which compressed working fluid flows out from the operation chamber;an interior space which is partitioned from an interior of the hermetic container and the operation chamber;a communication passage between the interior space and the suction path;a first passage between the discharge port and the interior space;a first check valve which prohibits working fluid passing through the first passage from returning from the interior space to the discharge port;a second passage between the interior space and the interior of the hermetic container;a second check valve which prohibits working fluid ...

Подробнее
Номер записи: 26
10-04-2014 дата публикации

PUMP

Номер: US20140099225A1
Автор: Denny Mark Joseph
Принадлежит: BP Exploration Operating Company Limited

The invention provides a pump comprising a pump inlet, a pump outlet, at least two threaded rotors and a pressure controlled valve, the pressure controlled valve being capable of controlling re-circulation of fluid from the pump outlet to the pump inlet. The pressure controlled valve can be a control valve. The invention also provides a multiple stage pump assembly comprising at least two pumps arranged in series, wherein at least one of the pumps is the aforementioned pump. 114-. (canceled)15. A multiple stage pump assembly comprising at least two pumps arranged in series , wherein at least the second and each subsequent pump comprises a pump inlet , a pump outlet , at least two threaded rotors and a pressure controlled valve , the pressure controlled valve being capable of controlling re-circulation of fluid from the pump outlet to the pump inlet.16. The assembly of claim 15 , in which the pressure controlled valve is adapted to control the rate of fluid flow there-through in proportion to the gas to liquid ratio of a fluid being pumped by the pump in use.17. The assembly of claim 15 , in which the pressure controlled valve is a control valve.18. The assembly of claim 15 , further comprising a conduit connecting the pump outlet to the pump inlet and through which re-circulated fluid can flow in use.19. The assembly of claim 18 , in which the pressure controlled valve is located wholly or partly within the conduit or adjacent one or other end of the conduit.20. The assembly of claim 18 , further comprising a recess in the pump outlet to preferentially allow claim 18 , in use claim 18 , liquid rather than gas to flow from an enclosure in which the threaded rotors are located to the conduit.21. The assembly of claim 15 , in which the pressure controlled valve is one which responds to the absolute pressure difference between the pump outlet and the pump inlet such that the valve permits fluid to flow there-through when the absolute pressure difference between the pump ...

Подробнее
Номер записи: 27
07-01-2016 дата публикации

AIR COMPRESSION DEVICE

Номер: US20160001791A1
Автор: KUROMITSU Masaru, MIZUFUNE Toru, Takahashi Akira
Принадлежит:

The present application discloses an air compression device, including a housing in which an air compressor is stored, the air compressor being configured to generate compressed air; and a filter through which air passes, the air being sucked into the housing. The filter may include a plate member having a first main plate portion provided with air holes through which the air passes. A surface of the first main plate portion is oriented in a first direction, the air holes extending through the plate member in a second direction intersecting with the first direction so as to change a flow direction of the air. 1. An air compression device , comprising:a housing in which an air compressor is stored, the air compressor being configured to generate compressed air; anda filter through which air passes, the air being sucked into the housing,wherein the filter includes a plate member having a first main plate portion provided with air holes through which the air passes, andwherein a surface of the first main plate portion is oriented in a first direction, the air holes extending through the plate member in a second direction intersecting with the first direction so as to change a flow direction of the air.2. The air compression device according to claim 1 ,wherein the filter includes a second main plate portion aligned with the plate member in a third direction different from the first and second directions, andwherein the second direction has a first intersection angle with an imaginary plane which perpendicularly intersects with the first direction.3. The air compression device according to claim 2 ,wherein the air holes in the first main plate portion include a first air hole, and a second air hole aligned with the first air hole in a fourth direction along the surface of the plate member,wherein the second main plate portion includes a third air hole extending in a fifth direction having a second intersection angle with the fourth direction, and a fourth air hole ...

Подробнее
Номер записи: 28
04-01-2018 дата публикации

Startup Control Systems And Methods To Reduce Flooded Startup Conditions

Номер: US20180001738A1
Автор: Joseph James Rozsnaki, Shawn W. VEHR
Принадлежит: Emerson Climate Technologies Inc

A refrigeration system includes a startup mode control module that receives an off time of a compressor of the refrigeration system and an ambient temperature, determines whether the off time and the ambient temperature indicate that the compressor is in a flooded condition, and selects, based on the determination, between a normal startup mode and a flooded startup mode. A compressor control module operates the compressor in the normal startup mode in response to the startup mode control module selecting the normal startup mode, in the flooded startup mode in response to the startup mode control module selecting the flooded startup mode, and transitions from the flooded startup mode to the normal startup mode after a predetermined period associated with operating in the flooded startup mode. The compressor is operated at a first speed in the normal startup mode and at a second speed in the flooded startup mode.

Подробнее
Номер записи: 29
05-01-2017 дата публикации

CAST-IN OFFSET FIXED SCROLL INTAKE OPENING

Номер: US20170002811A1
Автор: Duppert Ronald J.
Принадлежит: Bitzer Kuehlmaschinenbau GmbH

A fixed scroll compressor body includes a scroll compressor body casting. The casting has a central body portion having a plate-like base with a spiral scroll rib projecting from the base at a right angle thereto. The spiral scroll rib includes a volume between the spiraled ribs for the compressing of refrigerant. The spiral scroll rib spirals from a central region of the plate-like base to an outer wall of the central body portion. The casting further includes a first inward-protruding portion that protrudes from the outer wall into the volume. A distance that the first inward-protruding portion protrudes into the volume is greater than a thickness of the first inward-protruding portion such that removal of the first inward-protruding portion results in a first intake opening in the outer wall. The first intake opening provides a path for a flow of refrigerant into the volume. 1. A fixed scroll compressor body comprising:a scroll compressor body casting, the casting comprising: 'a first inward-protruding portion that protrudes from the outer wall into the volume wherein a radially-extending distance, that the first inward-protruding portion protrudes into the volume, is greater than a radial-extending thickness of the first inward-protruding portion such that removal of the first inward-protruding portion is configured to result in a first intake opening in the outer wall, the first intake opening providing a path for a flow of refrigerant into the volume.', 'a central body portion having a plate-like base with a spiral scroll rib projecting axially from the plate-like base, wherein the spiral scroll rib includes a volume between the spiraled ribs for the compressing of refrigerant, and wherein the spiral scroll rib spirals from a central region of the plate-like base to an outer wall of the central body portion; and'}2. The fixed scroll compressor body of claim 1 , further comprising a second inward-protruding portion that protrudes from the outer wall into the ...

Подробнее
Номер записи: 30
05-01-2017 дата публикации

TWO-PIECE SUCTION FITTING

Номер: US20170002812A1
Автор: Duppert Ronald J.
Принадлежит: Bitzer Kuehlmaschinenbau GmbH

A suction fitting coupled to a scroll compressor that has an outer housing with an inside diameter and a suction port defined in a wall of the outer housing. A suction duct is disposed inside the outer housing at a spaced distance from the wall of the outer housing. The suction duct defines an entrance port aligned with the suction port. The suction fitting includes a first member being generally cylindrical, and a second member being generally cylindrical. The second member is disposed inside the first member with a portion of the second member extending into the outer housing through the suction port, spanning the spaced distance to the suction duct, and coupling with the entrance port of the suction duct. Neither the first member nor the second member includes a suction screen for filtering out solid contaminants in a flow of refrigerant. 1. A suction fitting coupled to a scroll compressor , the scroll compressor including an outer housing having an inside diameter and a suction port defined in a wall of the outer housing , and a suction duct disposed inside the outer housing a spaced distance from the wall of the outer housing , with the suction duct defining an entrance port aligned with the suction port , the suction fitting comprising:a first member being generally cylindrical anda second member being generally cylindrical, with the second member disposed inside the first member with a portion of the second member extending into the outer housing through the suction port and spanning the spaced distance to the suction duct and coupling with the entrance port of the suction duct;wherein neither the first member nor the second member includes a suction screen for filtering out solid contaminants in a flow of refrigerant.2. The suction fitting coupled to a scroll compressor of claim 1 , wherein the first member has a body portion with a second inside diameter and a nose portion with a first inside diameter claim 1 , with the second inside diameter larger than ...

Подробнее
Номер записи: 31
05-01-2017 дата публикации

COMPRESSOR WITH THERMAL PROTECTION SYSTEM

Номер: US20170002817A1
Автор: Stover Robert C.
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A compressor includes a housing, a partition, a first scroll, a second scroll, and a thermal protection system. The partition is disposed within the housing and defines a suction chamber and a discharge chamber. The partition includes a discharge passage in fluid communication with the discharge chamber. The thermal protection system includes a positioning body and a displacement member. The positioning body is coupled to the second scroll and translatably disposed within the discharge passage. The displacement member is disposed between the positioning body and the partition and configured to translate the second scroll relative to the first scroll between first and second positions. 1. A compressor comprising:a housing;a partition disposed within the housing, the partition defining a suction chamber and a discharge chamber, and including a discharge passage in fluid communication with the discharge chamber;a first scroll supported within said housing and including a first endplate having a first spiral wrap extending therefrom;a second scroll supported within said housing and including a second endplate having a first side and a second side opposite the first side, the first side having a second spiral wrap extending therefrom and meshingly engaged with said first spiral wrap to form a series of compression pockets; anda thermal protection system including a positioning body and a displacement member, the positioning body coupled to the second scroll and translatable relative to the discharge passage, the displacement member disposed between the positioning body and the partition and configured to translate the second scroll relative to the first scroll between first and second positions in response to a change in an operating temperature of the compressor.2. The compressor of claim 1 , wherein the displacement member comprises a shape memory material.3. The compressor of claim 2 , wherein the shape memory material includes at least one of a bi-metal and tri-metal ...

Подробнее
Номер записи: 32
01-01-2015 дата публикации

CAPACITY-MODULATED SCROLL COMPRESSOR

Номер: US20150004039A1
Автор: DOEPKER Roy
Принадлежит:

A compressor may include a shell defining an internal volume containing compressed working fluid and first and second scrolls disposed within the internal volume. The first scroll may include a first spiral wrap. The second scroll may include a second spiral wrap, a suction inlet opening and a capacity-modulation aperture. The second spiral wrap may engage the first spiral wrap to define a pocket therebetween. The suction inlet opening may be sealed off from the internal volume. The capacity-modulation aperture may receive a valve member that is movable between a first position allowing leakage of fluid from the pocket to the suction inlet opening and a second position restricting leakage of fluid from the pocket. 1. A compressor comprising:a shell defining an internal volume;a first scroll disposed within said internal volume and including a first spiral wrap;a second scroll disposed within said internal volume and including a second spiral wrap engaged with said first spiral wrap to form a pocket between said first and second spiral wraps, said second scroll including a suction inlet opening, a discharge passage and a capacity-modulation aperture, said suction inlet opening receiving said fluid at a first pressure and being isolated from said internal volume, said discharge passage discharging said fluid to said internal volume at a second pressure that is higher than said first pressure; anda valve member at least partially disposed within said capacity-modulation aperture and movable between a first position in which said valve member restricts fluid to flow around a tip of said first spiral wrap to restrict fluid communication between said suction inlet opening and said pocket and a second position in which said valve member allows fluid-flow around said tip of said first spiral wrap to provide fluid communication between said suction inlet opening and said pocket.2. The compressor of claim 1 , wherein an end of said valve member is exposed to fluid within a ...

Подробнее
Номер записи: 33
01-01-2015 дата публикации

SCROLL COMPRESSOR

Номер: US20150004040A1
Автор: Katou Katsumi, Sakae Satoru
Принадлежит:

A scroll compressor includes a compression mechanism having fixed and orbiting scrolls engaged with each other to form a compression chamber. Each of the fixed and orbiting scrolls includes an end plate and a spiral wall-shaped wrap extending from the end plate. The fixed scroll has an injection port configured to communicate with the compression chamber through a communication passageway located in the fixed-side end plate. The orbiting-side wrap has a thick portion located at a position corresponding to the injection port and having an increasing tooth thickness portion. A tooth thickness of the increasing tooth thickness portion increases from a start of winding to an end of winding of the orbiting-side wrap. The thick portion has a thickness greater than or equal to a dimension of an opening of the injection port measured along a tooth thickness of the orbiting-side wrap. 1. A scroll compressor comprising: a fixed scroll including a fixed-side end plate and a spiral wall-shaped fixed-side wrap extending from the fixed-side end plate, and', 'an orbiting scroll including an orbiting-side end plate and a spiral wall-shaped orbiting-side wrap extending from the orbiting-side end plate,, 'a compression mechanism including'}the fixed-side wrap and the orbiting-side wrap being engaged with each other to form a compression chamber between the fixed and orbiting scrolls,the fixed scroll having an injection port configured to communicate with the compression chamber through a communication passageway located in the fixed-side end plate,the orbiting-side wrap having a thick portion thicker than an adjacent portion, the thick portion having an increasing tooth thickness portion, and the thick portion being located at a position corresponding to the injection port,a tooth thickness of the increasing tooth thickness portion increasing from a start of winding to an end of winding of the orbiting-side wrap, andthe thick portion having a thickness greater than or equal to a ...

Подробнее
Номер записи: 34
07-01-2016 дата публикации

AIR COMPRESSION DEVICE

Номер: US20160003246A1
Автор: KUROMITSU Masaru, MIYAUCHI Tatsuo, MIZUFUNE Toru
Принадлежит:

An air compression device is provided with a rotary compressor, a discharge flow channel connected to a discharge portion of the compressor, a release flow channel disposed to be connectable to the discharge flow channel, and an operation control unit configured to perform a release operation of releasing a part or all of compressed air remaining in the discharge flow channel through the release flow channel when the operation control unit controls to stop the compressor. 1. An air compression device , comprising:a rotary compressor;a discharge flow channel connected to a discharge portion of the compressor;a release flow channel disposed to be connectable to the discharge flow channel; andan operation control unit configured to perform a release operation of releasing a part or all of compressed air remaining in the discharge flow channel through the release flow channel when the operation control unit controls to stop the compressor.2. The air compression device according to claim 1 , whereinwhen the release operation is performed, the operation control unit controls to start releasing the compressed air while driving the compressor, and controls to stop the compressor after a predetermined time elapses.3. The air compression device according to claim 1 , whereinwhen the release operation is performed, the operation control unit controls to start releasing the compressed air while driving the compressor, and controls to stop the compressor when a condition for finishing the release operation is satisfied.4. The air compression device according to claim 1 , further comprising:an opening/closing mechanism which connects or disconnects the discharge flow channel to or from the release flow channel, whereinthe operation control unit is configured to bring the opening/closing mechanism to a disconnected state when an ordinary operation of generating compressed air is performed, and to bring the opening/closing mechanism to a connected state before the compressor is ...

Подробнее
Номер записи: 35
07-01-2016 дата публикации

Scroll Compressor

Номер: US20160003247A1
Автор: MATSUMURA Shoji, OHTAHARA Masaru, Takeda Hiromu
Принадлежит:

The purpose of the present invention is to suppress the contact between the wrap tooth tip and the tooth bottom by enlarging the tooth bottom step, and to reduce the loss owing to the gap as a result of enlarging the tooth bottom step. The fixed scroll includes a fixed scroll-side flat plate and a fixed-side wrap standing on one surface of the fixed-side plate while retaining the spiral shape. The orbiting scroll includes an orbiting-side plate and an orbiting-side wrap standing on one surface of the orbiting-side plate while retaining the spiral shape. The orbiting-side wrap orbits with respect to the fixed scroll while being in mesh with the fixed side wrap to form a compression chamber. Each of the fixed-side plate and the orbiting-side plate has the step on the tooth bottom at the inner periphery deeper than the step on the tooth bottom at the outer periphery. The step at the outer or the inner periphery, which is formed on the tooth bottom of the orbiting-side plate, has the depth smaller than the one on the tooth bottom of the fixed-side plate. 1. A scroll compressor comprising:a fixed scroll including a fixed-side plate and a fixed-side wrap standing on one surface of the fixed-side plate while retaining a spiral shape;an orbiting scroll including an orbiting-side plate, and an orbiting-side wrap standing on one surface of the orbiting-side plate while retaining a spiral shape, which allows the orbiting-side wrap to be in mesh with the fixed-side wrap for orbiting with respect to the fixed scroll to form a compression chamber; andan electric motor for driving the orbiting scroll via a crankshaft,wherein each tooth bottom of the fixed-side wrap and the orbiting-side wrap has a step formed to become deeper from an outer periphery to an inner periphery; andthe step is formed on the tooth bottom of the fixed-side wrap at the inner periphery so as to be deeper than the step formed on the tooth bottom of the orbiting-side wrap at the inner periphery.2. The scroll ...

Подробнее
Номер записи: 36
07-01-2016 дата публикации

Scroll Compressor

Номер: US20160003252A1
Автор: Fukaya Yoshihiro, Hasegawa Shuji, IMADA Koichi, Ishikawa Akihiro, Tsuchiya Takeshi
Принадлежит:

An object is to enable suppression of degradation of reliability by supporting a flange portion of a crankshaft with a bearing while downsizing a scroll compressor by reducing the size of the flange portion of the crankshaft. A scroll compressor includes: a fixed scroll fixed to a frame; an orbiting scroll forming a compression chamber by performing an orbital motion with respect to the fixed scroll; an electric motor that drives the orbiting scroll via the crankshaft; and a bearing part provided on the lower side from the flange portion of the crankshaft that rotatably supports a main shaft part of the crankshaft. The scroll compressor furthers has a thrust stopper, provided between the flange portion and the bearing part, in contact with the flange portion on the upper side and in contact with the bearing part on the lower side. Assuming that the outer diameter of the flange portion is φDt and the outer diameter of the thrust stopper is φDs, φDt<φDs holds. 1. A scroll compressor comprising:a fixed scroll fixed to a frame;an orbiting scroll that forms a compression chamber by performing an orbital motion with respect to the fixed scroll;an electric motor that drives the orbiting scroll via a crankshaft; anda bearing part provided on the lower side from a flange portion of the crankshaft that rotatably supports a main shaft part of the crankshaft,wherein the compressor further has a thrust stopper, provided between the flange portion and the bearing part, in contact with the flange portion on the upper side and in contact with the bearing part on the lower side, and{'b': '12', 'i': 'd', 'wherein, assuming that an outer diameter of the flange portion is φDt and an outer diameter of the thrust stopper is φDs,'}φDt<φDs holds.2. The scroll compressor according to claim 1 , wherein the thrust stopper and the flange portion are integrally formed with the same member as the member of the crankshaft.3. The scroll compressor according to claim 1 , wherein the position of an ...

Подробнее
Номер записи: 37
02-01-2020 дата публикации

ACTIVE CLEARANCE MANAGEMENT IN SCREW COMPRESSOR

Номер: US20200003214A1
Автор: Johnson Jay H., LOTSPAIH Steven
Принадлежит:

A compressor includes a housing defining a working chamber. The housing further includes a bore and an endplate disposed toward a discharge end. The compressor further includes a rotor having helical threads, the rotor being configured to be housed in the bore, a rotor clearance, a controllable bearing supporting the rotor, and a controller configured to control the controllable bearing such that the controllable bearing moves the rotor in a manner to reduce and/or enlarge the rotor clearance. 110-. (canceled)11. An HVAC system , comprising ,a fluidically connected fluid circuit including,a condenser,an expansion device disposed downstream of the condenser,an evaporator disposed downstream of the expansion device, a housing,', 'two bores within the housing,', 'an endplate disposed toward a high pressure end,', 'two rotors having intermeshing helical threads, the rotors being configured to be housed in the bores,', 'a rotor-to-rotor clearance defined between the two rotors,', 'a rotor-to-bore clearance defined between one of the rotors and an interior surface of the bores,', 'a rotor to endplate clearance defined between one of the rotors and the endplate,', 'a controllable bearing supporting one of the two rotors, and', 'a controller configured to control the controllable bearing such that the controllable bearing moves the one of the two rotors in a manner to reduce or enlarge the rotor-to-rotor, rotor-to-bore, or rotor to endplate clearances., 'a compressor disposed downstream of the evaporator and upstream of the condenser, the compressor including,'}12. The HVAC system according to claim 11 , wherein the housing further includes claim 11 ,an intake port disposed toward an opposite end from the discharge end,a discharge port disposed toward the discharge end, anda compression chamber defined by the helical threads of the two rotors and an interior surface of the housing, the compression chamber being configured to move from the intake port to the discharge port ...

Подробнее
Номер записи: 38
07-01-2021 дата публикации

SCROLL COMPRESSOR

Номер: US20210003131A1
Автор: IWATAKE Wataru, KAKUDA Masayuki, KAWAMURA Raito, Sasaki Kei, Sekiya Shin
Принадлежит: Mitsubishi Electric Corporation

A scroll compressor in which refrigerant gas is sucked into a hermetic container and is then compressed in a compression chamber. The scroll compressor includes an orbiting scroll including a second end plate having a second surface. The second end plate has an annular groove having an opening that opens into the second surface facing a frame and serving as a back-pressure chamber with the opening being closed by the frame, a gas communication path through which the groove communicates with the compression chamber in which the refrigerant gas is being compressed, and a first oil supply passage having a first opening that opens into at least one of a region inside the groove and a region outside the groove in the second surface and through which the refrigerating machine oil is supplied to a gap between the second surface and the frame. 1. A scroll compressor comprising:a fixed scroll including a first end plate and a first wrap located on the first end plate;an orbiting scroll including a second end plate and a second wrap located on a first surface of the second end plate that faces the fixed scroll, the orbiting scroll being disposed to define a compression chamber to compress refrigerant between the first wrap and the second wrap and orbiting relative to the fixed scroll;a frame facing a second surface opposite the first surface in the orbiting scroll and supporting a load on the orbiting scroll during compression of refrigerant gas; anda hermetic container containing the fixed scroll, the orbiting scroll, and the frame and including an oil sump in which refrigerating machine oil is held,the scroll compressor being configured to suck the refrigerant gas into the hermetic container and then compress the refrigerant gas in the compression chamber, an annular groove having an opening that opens into the second surface and serving as a back-pressure chamber with the opening being closed by the frame,', 'a gas communication path through which the groove communicates ...

Подробнее
Номер записи: 39
13-01-2022 дата публикации

SCROLL COMPRESSOR

Номер: US20220010797A1
Автор: ISHIZONO Fumihiko, TAKAMURA Yuji, TATSUWAKI Kohei
Принадлежит:

A scroll compressor includes: a shell forming an outer case, the shell forming an oil reservoir in which lubricating oil is reserved; a fixed scroll stored in the shell; an orbiting scroll stored in the shell, the orbiting scroll forming a compression chamber together with the fixed scroll; a frame holding the orbiting scroll; a thrust plate disposed between the orbiting scroll and the frame; and a thrust oil return pipe fixed to the frame, the thrust oil return pipe being a pipe through which the lubricating oil flows to return to the oil reservoir, in which: a hole portion is formed on the thrust plate, the hole portion passing from a first surface portion to a second surface portion, the first surface portion slidably contacting with the orbiting scroll, the second surface portion facing the frame; and the thrust oil return pipe is inserted into the hole portion and is fit in the thrust plate, and an upper end portion of the thrust oil return pipe does not protrude from the first surface portion of the thrust plate. 1. A scroll compressor comprising:a shell forming an outer case, the shell forming an oil reservoir in which lubricating oil is reserved;a fixed scroll stored in the shell;an orbiting scroll stored in the shell, the orbiting scroll forming a compression chamber together with the fixed scroll;a frame holding the orbiting scroll;a thrust plate disposed between the orbiting scroll and the frame; anda thrust oil return pipe fixed to the frame, the thrust oil return pipe being a pipe through which the lubricating oil flows to return to the oil reservoir, wherein:a hole portion is formed on the thrust plate, the hole portion passing from a first surface portion to a second surface portion, the first surface portion slidably contacting with the orbiting scroll, the second surface portion facing the frame; andthe thrust oil return pipe is inserted into the hole portion and is fit in the thrust plate, and an upper end portion of the thrust oil return pipe does ...

Подробнее
Номер записи: 40
08-01-2015 дата публикации

SCROLL COMPRESSOR

Номер: US20150010417A1
Автор: Lim Kweon Soo, Park Il Young, Won Jong Bo
Принадлежит:

Disclosed herein is a scroll compressor in which refrigerant is compressed in a compression chamber while the volume of the compression chamber is gradually decreased due to relative rotation of a fixed scroll and an orbiting scroll. In accordance with the disclosure, the scroll compressor is provided in which a pressure in a back-pressure chamber is managed in connection with a discharge refrigerant pressure so that the orbiting scroll is supported by the pressure in the back-pressure chamber without a power loss or an inner leak in an overall pressure section of a scroll. 1. A scroll compressor comprising:a housing including a suction port and a discharge port formed in an outer peripheral surface of the housing, the housing defining a suction chamber and a discharge chamber, the suction chamber communicating with the suction port and the discharge chamber communicating with the discharge port;a fixed scroll disposed in a first portion of the housing and having an outlet formed therein communicating with the discharge chamber;a drive motor mounted to a second portion of the housing including a rotary shaft coupled thereto;an orbiting scroll eccentrically coupled to an end of the rotary shaft and configured to revolve about the fixed scroll, the orbiting scroll cooperating with the fixed scroll to define a plurality of compression chambers;a back-pressure chamber defined by the housing between the orbiting scroll and the rotary shaft, the back-pressure chamber configured to urge the orbiting scroll towards the fixed scroll;a back-pressure regulation passage comprising a first passage through which the discharge chamber communicates with the back-pressure chamber and a second passage through which the back-pressure chamber communicates with the suction chamber; anda pressure regulation unit in communication with the back-pressure regulation passage configured to regulate a pressure in the back-pressure chamber in response to a pressure in the discharge chamber.2. ...

Подробнее
Номер записи: 41
12-01-2017 дата публикации

VANE PUMPS

Номер: US20170009768A1
Автор: SR. Craig T., Stambaugh
Принадлежит:

A vane pump includes a liner defining a cammed inner surface, a rotor rotatably disposed within the liner that has a plurality of vane slots, and a plurality of vanes slidably disposed within vane slots of the rotor and configured to extend away from the rotor and contact the cammed inner surface of the liner. The plurality of vanes include at least one sentinel vane that is configured to allow detection of wear on the sentinel vane. 1. A vane pump , comprising:a liner defining a cammed inner surface;a rotor rotatably disposed within the liner and including a plurality of vane slots; anda plurality of vanes slidably disposed within vane slots of the rotor and configured to extend away from the rotor and contact the cammed inner surface of the liner, wherein the plurality of vanes include at least one sentinel vane that is configured to allow detection of wear on the sentinel vane.2. The vane pump of claim 1 , wherein the sentinel vane includes a base portion that is larger than the vane slot of the rotor such that after the sentinel vane wears a predetermined amount claim 1 , the base portion prevents the sentinel vane from extending further from the rotor such that a gap separates a sentinel vane tip and a portion of the cammed inner surface.3. The vane pump of claim 2 , wherein the portion of the cammed inner surface where the gap is created includes a constant radius section.4. The vane pump of claim 2 , wherein the at least one sentinel vane includes a plurality of symmetrically located sentinel vanes.5. The vane pump of claim 4 , wherein the plurality of symmetrically located sentinel vanes includes two sentinel vanes spaced 180 degrees circumferentially from each other.6. The vane pump of claim 4 , wherein the plurality of symmetrically located sentinel vanes are spaced circumferentially apart 360/N degrees claim 4 , wherein N is the total number of sentinel vanes.7. The vane pump of claim 2 , further comprising a vibration sensor operatively connected to the ...

Подробнее
Номер записи: 42
27-01-2022 дата публикации

HIGH PRESSURE SCROLL COMPRESSOR

Номер: US20220025884A1
Автор: Bae Moo Seong, Cho Yang Hee
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

Disclosed herein is a high-pressure scroll compressor, in response to a discharged refrigerant flowing into a back pressure chamber, capable of directly discharging the refrigerant to a space inside a main body, and capable of maintaining an intermediate pressure of the back pressure chamber to be less than a discharge pressure of the refrigerant by separately providing a discharge flow path in the back pressure chamber. 1. A high-pressure scroll compressor comprising:a main body;a fixed scroll fixed inside the main body and comprising a discharge port through which a high-pressure refrigerant is discharged;an orbiting scroll engaged with the fixed scroll to perform a relative orbiting motion, and forming a compression chamber with the fixed scroll;a main frame fixed inside the main body so as to be located under the orbiting scroll and comprising a back pressure chamber filled with an intermediate-pressure refrigerant;a back pressure hole provided in the orbiting scroll and provided to allow the compression chamber to communicate with the back pressure chamber;a bypass portion provided in plural on an upper surface of the fixed scroll and configured to selectively bypass the refrigerant of the compression chamber to a space inside the main body; anda back pressure chamber discharge portion configured to selectively discharge the refrigerant of the back pressure chamber to the space inside the main body.2. The high-pressure scroll compressor of claim 1 , whereinthe back pressure chamber discharge portion comprises a back pressure chamber discharge flow path provided in the fixed scroll to discharge the refrigerant inside the back pressure chamber into the space inside the main body, and a back pressure chamber discharge valve configured to selectively open and close the back pressure chamber discharge flow path.3. The high-pressure scroll compressor of claim 2 , whereinthe back pressure chamber discharge flow path is provided to pass through the fixed scroll from an ...

Подробнее
Номер записи: 43
27-01-2022 дата публикации

VARIABLE CAPACITY COMPRESSOR

Номер: US20220025887A1
Автор: LIU Chunhui, PAN Jin, WANG Yanzhen
Принадлежит: SHANGHAI HIGHLY ELECTRICAL APPLIANCES CO., LTD.

A variable capacity compressor is provided, including: two cylinders and a middle plate; at least one flow channel provided in the middle plate, wherein one end of the flow channel is connected to an exhaust chamber of any one of the two cylinders, the other end is connected to a suction chamber of the other one of the two cylinders. In present disclosure, by setting a flow channel in the middle plate of the variable capacity compressor, the exhaust chamber of one cylinder is connected to the suction chamber of the other cylinder. When the flow channel is completely closed, the two cylinders operate independently; when the flow channel is opened, the refrigerant in the exhaust chamber flows into the suction chamber through the flow channel, that is, the upper cylinders and the lower cylinder are connected to each other, which can adjust the capacity of the compressor. 1. A variable capacity compressor , comprising:two cylinders;a middle plate, separating the two cylinders, and at least one flow channel provided in the middle plate, wherein one end of the flow channel is connected to an exhaust chamber of any one of the two cylinders, the other end of the flow channel is connected to a suction chamber of the other one of the two cylinders; each flow channel is provided with a flow control component for adjusting flow rate of refrigerant flowing through the flow channel.2. The variable capacity compressor of claim 1 , wherein the flow control component comprises a first slider provided in the middle plate claim 1 , and the first slider is capable of moving along a radial direction of the middle plate to change an effective flow area of the flow channel claim 1 , which adjusts the flow rate of the refrigerant flowing through the flow channel.3. The variable capacity compressor of claim 2 , wherein the first slider is driven by a solenoid valve claim 2 , so that the first slider moves along the radial direction of the middle plate.4. The variable capacity compressor of ...

Подробнее
Номер записи: 44
11-01-2018 дата публикации

HYDRAULIC PUMP AND RESPECTIVE MULTIFUNCTION VALVE

Номер: US20180010598A1
Автор: Andreis Francesco, Copelli Stefano, Zuppi Roberto
Принадлежит:

A hydraulic pump is described, comprising at least one inlet duct for a fluid, at least one outlet duct for the fluid and at least one pumping unit interposed between the inlet and outlet ducts. At least one multifunction valve is interposed between the inlet duct, upstream of the pumping unit, and the outlet duct, downstream of the pumping unit, which valve is configured to divert the flow of fluid from the inlet duct to the outlet duct without the fluid flowing into the pumping unit. The multifunction valve comprises a valve body that defines an inner bypass channel in which a shutter element is axially movable, an actuator member operatively associated with the shutter element and configured to move it from a closing position to an opening position of the bypass channel, and an elastic contrast element operatively associated with the shutter element and configured to keep it in the first closing position of the bypass channel when such shutter element is not actuated by the actuator member. The actuator member consists of a bias spring manufactured with a shape memory alloy, configured to move the shutter element from the first closing position to the second opening position of the bypass channel when a predefined temperature value is reached. 210262624242626. The hydraulic pump () according to claim 1 , characterized in that the shutter element () is mushroom-shaped claim 1 , with an inner portion (A) configured to be introduced into the bypass channel () and to occlude selectively said bypass channel () claim 1 , and an outer portion (B) having a larger cross section than the cross section of the inner portion (A).31030302612. The hydraulic pump () according to claim 2 , characterized in that the elastic contrast element () consists of a bias spring operating by traction claim 2 , preloaded with a predefined force claim 2 , said bias contrast spring () being configured to control the opening of the shutter element () when the pressure of the fluid circulating ...

Подробнее
Номер записи: 45
14-01-2021 дата публикации

Compressor Having Capacity Modulation

Номер: US20210010472A1
Автор: James W. MCBEAN, Joseph B. Burton, Phillip M. Moore, Robert V. Eyink
Принадлежит: Emerson Climate Technologies Inc

A compressor may include a shell assembly, first and second scrolls, a piston, and a piston-retention member. The piston engages the first scroll and may be partially received within a recess defined by the shell assembly. The piston and the shell assembly may cooperate to define a pressure chamber. The pressure chamber may be in selective fluid communication with a source of working fluid to control movement of the piston relative to the shell assembly. The piston-retention member may engage the piston and a rotationally fixed structure. The piston-retention member allows rotation of the piston relative to the first scroll in a first rotational direction and restricts rotation of the piston relative to the first scroll in a second rotational direction.

Подробнее
Номер записи: 46
10-01-2019 дата публикации

COMPRESSOR HAVING IMPROVED DISCHARGE STRUCTURE

Номер: US20190010945A1
Автор: Choi Yong Kyu, Kim Cheol Hwan, Lee Howon
Принадлежит:

A scroll compressor is provided, that may include a connection groove to reduce discharge resistance. The scroll compressor may include a fixed scroll including a fixed end plate and a feed wrap and an orbiting scroll, rotating with respect to the fixed scroll and including an orbiting end plate and an orbiting wrap, and structure in which a connection groove having a concave groove shape provided at an inner surface of the fixed end plate to allow a refrigerant to flow through the connection groove depending on an overlapping state of the fixed wrap and the connection groove, thereby providing an effect of increasing opening efficiency of discharge holes at a beginning of discharge. 1. A scroll compressor , comprising:a fixed scroll including a fixed end plate and a fixed wrap; and a first compression chamber is formed between an outer surface of the fixed wrap and an inner surface of the orbiting wrap;', 'a second compression chamber is formed between an inner surface of the fixed wrap and an outer surface of the orbiting wrap;', 'the fixed end plate of the fixed scroll includes a first discharge inlet configured to discharge a refrigerant compressed in the first compression chamber and a second discharge inlet configured to discharge a refrigerant compressed in the second compression chamber;', 'a communication groove that connects the first discharge inlet and the second discharge inlet, and having a form of a recessed groove is formed in an inner surface of the fixed end plate; and', 'a refrigerant flows through the communication groove according to a state in which the orbiting wrap overlaps the communication groove., 'an orbiting scroll including an orbiting end plate and an orbiting wrap and configured to perform an orbiting movement about the fixed scroll, wherein;'}2. The scroll compressor of claim 1 , wherein the fixed end plate of the fixed scroll includes a discharge outlet at a position overlapping with any one of the first discharge inlet or the ...

Подробнее
Номер записи: 47
09-01-2020 дата публикации

SCROLL COMPRESSOR

Номер: US20200011328A1
Автор: UEKAWA Takashi
Принадлежит:

A scroll compressor includes a fixed scroll fixed inside a housing, an orbiting scroll configured to orbit engaged with the fixed scroll, a rotary shaft configured to allow the orbiting scroll to orbit by supporting the orbiting scroll with an eccentric shaft eccentric from a main shaft, and a slide bush portion installed between a bearing of the orbiting scroll and the eccentric shaft and according to a rotational speed of the rotary shaft, configured to change a pressing force of the orbiting scroll applied to the fixed scroll by allowing an eccentricity to be changed by a gas load applied to the orbiting scroll. 1. A scroll compressor comprising:a fixed scroll fixed inside a housing;an orbiting scroll configured to orbit and be engaged with the fixed scroll;a rotary shaft configured to allow the orbiting scroll to orbit the orbiting scroll on an eccentric shaft eccentric from a main shaft; anda slide bush portion that is installed between a bearing of the orbiting scroll and the eccentric shaft and, according to a rotational speed of the rotary shaft, configured to change a pressing force of the orbiting scroll applied to the fixed scroll by allowing an eccentricity to be changed by a gas load applied to the orbiting scroll.2. The scroll compressor of claim 1 , wherein:the slide bush portion suppresses a pressing force of the orbiting scroll applied to the fixed scroll based on the rotary shaft being rotated at a high rotational speed; andthe orbiting scroll compresses the fixed scroll based on the rotary shaft being rotated at a low rotational speed.3. The scroll compressor of claim 2 , wherein the slide bush portion suppresses the pressing force of the orbiting scroll applied to the fixed scroll by suppressing the eccentricity of the orbiting scroll from the main shaft.4. The scroll compressor of claim 1 , wherein the slide bush portion comprises:a slide bush inserted and coupled to the bearing of the orbiting scroll; andan inner bush installed between the ...

Подробнее
Номер записи: 48
03-02-2022 дата публикации

COMPRESSOR HAVING SHELL FITTING

Номер: US20220034316A1
Автор: Bingham Larry L., REINHART KEITH J.
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A compressor includes a shell, a compression mechanism and a fitting. The shell includes an opening and defines a chamber. The compression mechanism is disposed within the chamber of the shell. The fitting is attached to the shell at the opening. Working fluid flowing through the fitting flows to the compression mechanism. The opening is partially defined by a first edge and a second edge. The first edge includes a first planar surface and the second edge includes a second planar surface that faces the first planar surface. A first portion of the fitting extends at least partially into the opening and a second portion of the fitting abuts against the first and second edges. 1. A compressor comprising:a shell including an opening and defining a chamber;a compression assembly disposed within the chamber of the shell; anda fitting attached to the shell at the opening, working fluid flowing through the fitting flows to the compression assembly,wherein the opening is partially defined by a first edge and a second edge, the first edge includes a first planar surface and the second edge includes a second planar surface that faces the first planar surface, a first portion of the fitting extends at least partially into the opening and a second portion of the fitting abuts against the first and second edges.2. The compressor of claim 1 , wherein the opening is a non-circular shape.3. The compressor of claim 1 , wherein the opening has opposing arcuate surfaces claim 1 , and wherein an outer diametrical surface of the fitting abuts against at least one of the opposing arcuate surfaces.4. The compressor of claim 3 , wherein the opposing arcuate surfaces and the first and second edges cooperate to define a circular shape.5. The compressor of claim 1 , wherein the fitting is a suction fitting claim 1 , and wherein working fluid flowing through the suction fitting flows to the compression assembly.6. The compressor of claim 1 , wherein the first portion of the fitting is a first ...

Подробнее
Номер записи: 49
03-02-2022 дата публикации

Dual-cylinder two-stage variable cpacity compressor

Номер: US20220034320A1
Автор: Chunhui Liu, JIN Pan, Yanzhen Wang
Принадлежит: Shanghai Highly Electrical Appliances Co Ltd

A dual-cylinder two-stage variable capacity compressor is provided, including: a first cylinder, having an exhaust port connected to a first exhaust channel: a second cylinder, wherein the second cylinder is provided with a ventilating slider, and the ventilating slider is provided with a first gas transit channel and a second gas transit channel; wherein, when the ventilating slider is at a first connecting position, the first exhaust channel is connected to a suction channel in a second cylinder when the ventilating slider is at a second connecting position, the first exhaust channel is connected to a second exhaust channel. The compressor of the present disclosure can vary its own capacity, that is, the variation of the compressor's capacity can be realized by arranging a ventilating slider, which will meet the requirements of variation loads of the compressor in different seasons.

Подробнее
Номер записи: 50
03-02-2022 дата публикации

Dry Dual-Scroll Vacuum Pump

Номер: US20220034321A1
Автор: Chen Guodong, Jiang Renpu, Xiong Shusheng
Принадлежит:

A dry dual-scroll vacuum pump includes a driving assembly and an upper cover located above the driving assembly, wherein the driving assembly includes an output shaft, and a movable disk is eccentrically arranged on the output shaft; two groups of first scroll teeth that are centrally symmetrical are arranged on a side of the movable disk that faces the upper cover; a fixed disk is arranged at a lower end of the upper cover, second scroll teeth that are in one-to-one correspondence with the first scroll teeth are arranged on the fixed disk, and the first scroll teeth are meshed with the second scroll teeth to form a compression cavity; and the upper cover is further provided with an air inlet and an air outlet, which correspond to the compression cavity. 11666246. A dry dual-scroll vacuum pump , characterized by comprising a driving assembly and an upper cover located above the driving assembly , wherein the driving assembly comprises an output shaft () , and a movable disk () eccentrically arranged on the output shaft (); two groups of first scroll teeth () that are centrally symmetrical are arranged on a side of the movable disk () that faces the upper cover;{'b': 4', '23', '24', '4', '24', '23', '5', '1, 'a fixed disk () is arranged at a lower end of the upper cover, second scroll teeth () that are in one-to-one correspondence with the first scroll teeth () are arranged on the fixed disk (), and the first scroll teeth () are meshed with the second scroll teeth () to form a compression cavity; and the upper cover is further provided with an air inlet () and an air outlet (), which correspond to the compression cavity.'}224232121244236. The dry dual-scroll vacuum pump according to claim 1 , characterized in that a tooth tip of each of the first scroll teeth () and the second scroll teeth () is provided with a sealing groove () claim 1 , the sealing groove () is internally provided with an elastic sealing material claim 1 , the first scroll teeth () and the fixed ...

Подробнее
Номер записи: 51
03-02-2022 дата публикации

SEALING STRUCTURE AND SCROLL AIR COMPRESSOR HAVING SAME

Номер: US20220034322A1
Автор: Chen Xiaoxiao, Guo Xiaoqing, Li Yelin, SHI ZHENGLIANG, WEI Huijun
Принадлежит:

Disclosed are a sealing structure and a scroll air compressor having the same. The sealing structure includes: an orbiting scroll including an orbiting scroll spiral tooth (), the orbiting scroll spiral tooth () being provided with an orbiting scroll spiral tooth groove (), an orbiting scroll wear-resistant sealing strip () being provided in the orbiting scroll spiral tooth groove (); a stationary scroll including a stationary scroll spiral tooth () matched with the orbiting scroll spiral tooth (), the stationary scroll spiral tooth () being provided with a stationary scroll spiral tooth groove (), a stationary scroll wear-resistant sealing strip () is provided in the stationary scroll spiral tooth groove (), the wear-resistant sealing strip () is divided into sections including a high-temperature and high-pressure section () and a medium-temperature and medium-pressure section (). The sealing structure reduces costs of use and maintenance of the sealing strip; a buffer contact surface of the wear-resistant sealing strip () in contact with a scroll surface is flat, which improves performances of sealing and noise-reduction; a bottom surface of the wear-resistant sealing strip () is equipped with a sealing ring having a cross section in a shape of a circle or a circular tube, which improves the damping and buffering performances; thereby the performance of the air compressor is improved, and the use cost of the air compressor is also reduced. 1. A sealing structure , comprising:an orbiting scroll comprising an orbiting scroll spiral tooth, wherein the orbiting scroll spiral tooth is provided with an orbiting scroll spiral tooth groove, an orbiting scroll wear-resistant sealing strip is provided in the orbiting scroll spiral tooth groove, the orbiting scroll wear-resistant sealing strip comprises the orbiting scroll wear-resistant sealing strip in a high-temperature and high-pressure section and the orbiting scroll wear-resistant sealing strip in a medium-temperature ...

Подробнее
Номер записи: 52
03-02-2022 дата публикации

SCROLL COMPRESSOR

Номер: US20220034557A1
Автор: Choi Jungsun, Lee Kangwook, LEE Kyungho
Принадлежит:

A scroll compressor includes a refrigerant suction pipe coupled to a discharge cover or a fixed scroll through a casing in a radial direction, a suction passage communicating the refrigerant suction pipe with a compression chamber, and a suction passage opening and closing valve disposed inside the suction passage to be slidable in an axial direction so as to selectively open or close the suction passage. Accordingly, when the compressor is stopped, oil or refrigerant in the casing can be restricted quickly so as not to flow back to the refrigerant suction pipe through a compression unit. 1. A scroll compressor comprising:a casing;a main frame provided in the casing;a fixed scroll having (i) a fixed end plate coupled to the main frame, (ii) a fixed wrap defined at a first side surface of the fixed end plate, and (iii) a discharge port defined through the fixed end plate at a side of the fixed wrap;an orbiting scroll having (i) an orbiting end plate located between the main frame and the fixed scroll, and (ii) an orbiting wrap defined at a side surface of the orbiting end plate, the orbiting wrap being configured to engage with the fixed wrap to thereby define a compression chamber in engagement with the fixed wrap;a discharge cover defining a discharge space that accommodates an outlet of the discharge port, the discharge cover being coupled to a second side surface of the fixed end plate opposite to the first side surface of the fixed end plate;a refrigerant suction pipe coupled to the discharge cover or the fixed scroll through the casing in a radial direction;a suction passage in fluid communication with the refrigerant suction pipe and the compression chamber; anda suction passage opening and closing valve provided inside the suction passage and configured to slide in an axial direction to thereby selectively open or close the suction passage.2. The scroll compressor of claim 1 , wherein the refrigerant suction pipe is coupled to the discharge cover or the fixed ...

Подробнее
Номер записи: 53
19-01-2017 дата публикации

METHOD AND APPARATUS IN CONNECTION WITH A SCREW COMPRESSOR

Номер: US20170016447A1
Автор: AHOLA Jero, Kosonen Antti
Принадлежит:

the screw compressor with a variable rotational speed of the screw compressor, the rotational speed of the screw compressor having a speed profile in which the rotational speed is changed stepwise such that between stepwise changes the rotational speed of the screw compressor is kept substantially constant for a time period, repeating the speed profile until the pressure of the pressure vessel reaches a set pressure value, determining pressure of the pressure vessel, power consumption of the screw compressor drive and mass flow rate during the pressurising when the rotational speed of the screw compressor is kept substantially constant, calculating energy efficiency of the screw compressor drive as a function of pressure of the pressure vessel and rotational speed of the screw compressor on the on the basis of the determined pressure of the pressure vessel and power consumption of the screw compressor drive. 1. A method of determining operation characteristics of a screw compressor drive comprising a screw compressor driven with a frequency converter , wherein the method comprisespressurising a pressure vessel of the screw compressor with a variable rotational speed of the screw compressor, the rotational speed of the screw compressor having a speed profile in which the rotational speed is changed stepwise such that between stepwise changes the rotational speed of the screw compressor is kept substantially constant for a time period,repeating the speed profile until the pressure of the pressure vessel reaches a set pressure value,determining pressure of the pressure vessel, power consumption of the screw compressor drive and mass flow rate during the pressurising when the rotational speed of the screw compressor is kept substantially constant,calculating energy efficiency of the screw compressor drive as a function of pressure of the pressure vessel and rotational speed of the screw compressor on the on the basis of the determined pressure of the pressure vessel and ...

Подробнее
Номер записи: 54
21-01-2016 дата публикации

SNAP-IN TEMPERATURE SENSOR FOR SCROLL COMPRESSOR

Номер: US20160017886A1
Автор: Avary Stephen, Cargile William, Hahn Gregory W., Milliff Tracy
Принадлежит:

A temperature sensor on an outer surface of an upper shell at a location is associated with a discharge chamber. The temperature sensor includes electronics molded into an overmolded plastic and includes a spring member. The spring member snaps into a sensor housing connected to the outer surface. 1. A scroll compressor comprising:a housing including a cylindrical lower portion and an upper cover, said upper cover having an outer surface;a scroll compressor pump unit including a first scroll member having a base and a generally spiral wrap extending from its base, and a second scroll member having a base and a generally spiral wrap extending from its base, said wraps of said first and second scroll members interfitting to define a compression chamber, and said first scroll member having a discharge port;an electric motor for driving a drive shaft to rotate and, in turn, cause said second scroll member to orbit relative to said first said scroll member to decrease a volume of said compression chambers such that a refrigerant is entrapped and is driven to communicate with said discharge port;a discharge chamber defined inwardly of said upper cover and communicating with said discharge port; anda temperature sensor connected to said outer surface at a location associated with said discharge chamber, said temperature sensor including a spring member, said spring member snapping into a sensor housing connected to said outer surface.2. The scroll compressor as set forth in claim 1 , wherein said sensor housing and said spring member are metallic.3. The scroll compressor as set forth in claim 1 , wherein said sensor housing has a front opening for receipt of said sensor and such that said sensor can be inserted and removed from said front opening.4. The scroll compressor as set forth in claim 1 , wherein said sensor includes an electronic component in contact with said outer surface.5. The scroll compressor as set forth in claim 4 , wherein said electronic component is a ...

Подробнее
Номер записи: 55
18-01-2018 дата публикации

SCROLL COMPRESSOR

Номер: US20180017055A1
Автор: MYOGAHARA Masashi, NAGAOKA Fumikazu, NARUMI Keisuke, TSURUOKA Yosuke
Принадлежит:

A scroll compressor includes a first chamfered portion formed at a distal end potion of a spiral blade of a fixed scroll, a second chamfered portion formed at a distal end portion of a spiral blade of an orbiting scroll, a third chamfered portion formed at a bottom portion of the spiral blade of the fixed scroll, and a fourth chamfered portion formed at a bottom portion of the spiral blade of the orbiting scroll. An expression of 0<{(Av+Av)/2}/Ac<1×10is satisfied where a sectional area of a space between the first chamfered portion and the fourth chamfered portion is defined as Av, a sectional area of a space between the second chamfered portion and the third chamfered portion is defined as Av, and a sectional area of a compression chamber is defined as Ac. 1. A scroll compressor , comprising:a fixed scroll including a first base plate portion and a first spiral blade provided to stand on one surface of the first base plate portion;an orbiting scroll including a second base plate portion and a second spiral blade provided to stand on a surface of the second base plate portion opposite to the fixed scroll, and is configured to perform an orbiting motion with respect to the fixed scroll, the first spiral blade and the second spiral blade being in mesh with each other to form a compression chamber;a first chamfered portion formed at each of both corner portions of a distal end portion of the first spiral blade;a second chamfered portion formed at each of both corner portions of a distal end portion of the second spiral blade;a third chamfered portion formed on each of both sides of a bottom portion of the first spiral blade, the third chamfered portion having a same shape as a shape of the second chamfered portion; anda fourth chamfered portion formed on each of both sides of a bottom portion of the second spiral blade, the fourth chamfered portion having a same shape as a shape of the first chamfered portion,a chamfer dimension of the first chamfered portion and a ...

Подробнее
Номер записи: 56
18-01-2018 дата публикации

SCREW COMPRESSOR

Номер: US20180017058A1
Автор: Miyamura Harunori, Shikano Shigeharu
Принадлежит:

A screw compressor includes a casing, a drive shaft, a screw rotor, a gate rotor, a slide valve, and a slide valve driving mechanism having a hydropneumatic cylinder. The drive shaft has one end supported via a bearing on a bearing holder held by the casing. The other end is coupled to an electric motor. A compression chamber is defined by the gate rotor meshing with a helical groove formed on the screw rotor. The hydropneumatic cylinder is located opposite to the screw rotor with respect to the bearing. The bearing holder has an outer peripheral surface configured as a guide surface guiding a sliding movement of the slide valve. The bearing holder has axial end portions. One of the axial end portions located opposite to the screw rotor constitutes a cylinder tube of the hydropneumatic cylinder to achieve integration of the bearing holder and the hydropneumatic cylinder. 1. A screw compressor comprising:a casing;a drive shaft having one end supported, via a bearing, on a bearing holder held by the casing, and an other end coupled to an electric motor;a screw rotor coupled to the drive shaft;a gate rotor defining a compression chamber in the casing by meshing with a helical groove formed on the screw rotor;a slide valve slidable in an axial direction of the screw rotor and capable of regulating an area of a discharge opening of the compression chamber; anda slide valve driving mechanism including a hydropneumatic cylinder configured to drive the slide valve,the hydropneumatic cylinder being located opposite to the screw rotor with respect to the bearing interposed therebetween, andthe bearing holder having an outer peripheral surface configured as a guide surface guiding a sliding movement of the slide valve,the bearing holder having axial end portions, with one of the axial end portions located opposite to the screw rotor constituting a cylinder tube of the hydropneumatic cylinder, thereby achieving integration of the bearing holder and the hydropneumatic cylinder.2 ...

Подробнее
Номер записи: 57
17-01-2019 дата публикации

Variable Speed Compressor Protection System And Method

Номер: US20190017508A1
Автор: PHAM Hung M., SEIBEL Stephen M.
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A system and method for a compressor includes a compressor connected to a condenser, a discharge line temperature sensor that outputs a discharge line temperature signal corresponding to a discharge line temperature of refrigerant leaving the compressor, and a control module connected to the discharge line temperature sensor. The control module determines a saturated condenser temperature, calculates a discharge superheat temperature based on the saturated condenser temperature and the discharge line temperature, and monitors a flood back condition of the compressor by comparing the discharge superheat temperature with a predetermined threshold. The control module increases a speed of the compressor when the discharge superheat temperature is less than or equal to the predetermined threshold. 1. A method comprising:determining, with a control module, a saturated condenser temperature of a condenser connected to a compressor;receiving, with the control module, a discharge line temperature signal that corresponds to a discharge line temperature of refrigerant leaving the compressor;calculating, with the control module, a discharge superheat temperature based on the saturated condenser temperature and the discharge line temperature;monitoring, with the control module, a flood back condition of the compressor by comparing the discharge superheat temperature with a predetermined threshold; andincreasing a speed of the compressor, with the control module, when the discharge superheat temperature is less than or equal to the predetermined threshold.2. The method of wherein the predetermined threshold is thirty degrees Fahrenheit.3. The method of wherein the control module increases the speed of the compressor when the discharge superheat temperature is less than or equal to the predetermined threshold.4. The method of further comprising decreasing claim 1 , with the control module claim 1 , an opening of an expansion valve associated with the compressor when the discharge ...

Подробнее
Номер записи: 58
21-01-2021 дата публикации

Gas Compressor

Номер: US20210017988A1
Автор: Akira Iyozumi, Hideharu Tanaka, Kenji Morita, Masahiko Takano, Masakazu Hase, Shigeyuki Yorikane, Takashi Nakajima, Yoshihiko SAGAWA
Принадлежит: Hitachi Industrial Equipment Systems Co Ltd

A technique is provided that can further reduce power at the time of “unload operation control” in a gas compressor that generates a compressed gas at a set pressure by constant-speed control. The gas compressor includes a compressor main unit, a drive source, an intake throttle valve, a gas release valve, rotation speed converting means, a pressure detecting device that detects a discharge pressure, and a controller that, the relationship between an upper-limit pressure H and a lower-limit pressure L being H>L, carries out opening the intake throttle valve and closing the gas release valve and operating the drive source at a full-load rotation speed until the discharge pressure reaches the upper-limit pressure H. The controller carries out at least one of closing the intake throttle valve and opening the gas release valve to reduce the discharge pressure to within a predetermined range when the discharge pressure reaches the upper-limit pressure H. The controller carries out switching to load operation when the discharge pressure drops to the lower-limit pressure L. In the gas compressor, the controller outputs a command of a lower rotation speed than the full-load rotation speed to the rotation speed converting means when the discharge pressure rises and reaches the upper-limit pressure H. The controller outputs a command of the full-load rotation speed to the rotation speed converting means when the discharge pressure drops and reaches the lower-limit pressure L.

Подробнее
Номер записи: 59
21-01-2021 дата публикации

ELECTRIC COMPRESSOR

Номер: US20210017992A1
Автор: JANG Jinyong, PARK Honghee, PARK JUNGHOON, SEO Bunjune
Принадлежит: LG ELECTRONICS INC.

The present disclosure relates to an electrical compressor, comprising a housing, a compression part, a motor part, a first journal bearing coupled between a frame and a rotating shaft, a second journal bearing coupled between an eccentric part and an orbit scroll, and a ball bearing coupled to another end of the rotating shaft. The compression part comprises a fixed scroll disposed at an internal side of the housing, an orbit scroll configured to compress a refrigerant while orbiting the fixed scroll, and a frame configured to support the fixed scroll. The motor part comprises a rotating shaft comprising an eccentric part coupled to the orbit scroll at one end thereof, a stator disposed at another internal side of the housing, and a rotor rotatably disposed with respect to the stator and configured to rotate around the rotating shaft. 1. An electric compressor , comprising:a housing; a fixed scroll and disposed at an internal side of the housing,', 'an orbit scroll configured to compress a refrigerant while orbiting the fixed scroll, and', 'a frame configured to support the fixed scroll;, 'a compression part comprising a rotating shaft comprising an eccentric part coupled to the orbit scroll at one end thereof,', 'a stator disposed at another internal side of the housing, and', 'a rotor rotatably disposed with respect to the stator and configured to rotate around the rotating shaft;, 'a motor part comprisinga first journal bearing coupled between the frame and the rotating shaft;a second journal bearing coupled between the eccentric part and the orbit scroll; anda ball bearing coupled to another end of the rotating shaft.2. The electric compressor of claim 1 , further comprisinga ball bearing coupling part,wherein the ball bearing is press-fitted and coupled to the ball bearing coupling part.3. The electric compressor of claim 2 , wherein the rotating shaft is coupled to the ball bearing while the ball bearing is coupled inside the ball bearing coupling part claim ...

Подробнее
Номер записи: 60
21-01-2021 дата публикации

SCROLL COMPRESSOR

Номер: US20210017994A1
Автор: UEKAWA Takashi
Принадлежит:

A scroll compressor including an orbiting scroll having a small diameter compared to a case in which an oil groove is provided in a ring shape and constantly communicates with an outlet of an oil passage. The scroll compressor includes a fixed scroll and an orbiting scroll configured to orbit in engagement with the fixed scroll. The fixed scroll includes an outlet of an oil passage configured to communicate with an oil tray storing lubricant, the outlet of the oil passage connected to a sliding surface of the orbiting scroll. The orbiting scroll includes a plurality of oil grooves configured not to communicate with each other so as to supply the lubricant to a sliding surface of the fixed scroll, the plurality of oil grooves configured to communicate with the outlet at least once and not to communicate with the outlet at least once while the orbiting scroll rotates once. 1. A scroll compressor comprising:a fixed scroll fixed to an inside of a main body; andan orbiting scroll configured to orbit in engagement with the fixed scroll;wherein the fixed scroll comprises an outlet of an oil passage configured to communicate with an oil tray configured to store a lubricant, the outlet of the oil passage connected to a sliding surface of the orbiting scroll,wherein the orbiting scroll comprises a plurality of oil grooves, each of the plurality of oil grooves configured to supply the lubricant to a sliding surface of the fixed scroll and to not communicate with another of the plurality of oil grooves, andwherein each of the plurality of oil grooves is configured to communicate with the outlet at least once and to not communicate with the outlet at least once while the orbiting scroll rotates once.2. The scroll compressor of claim 1 , wherein each of the plurality of oil grooves is sealed by a sliding surface of the fixed scroll and the sliding surface of the orbiting scroll while in communication with the outlet.3. The scroll compressor of claim 1 , wherein claim 1 , among ...

Подробнее
Номер записи: 61
16-01-2020 дата публикации

Scroll-type compressor

Номер: US20200018310A1
Автор: Hirofumi Hirata, Keita KITAGUCHI, Makoto Takeuchi, Takahide Ito, Takuma YAMASHITA
Принадлежит: Mitsubishi Heavy Industries Ltd

Provided is a pin-ring mechanism (26) that supports a driving-side scroll member and a driven-side scroll member such that the driving-side scroll member and the driven-side scroll member are in relative revolving motion. The pin-ring mechanism (26) includes: a pin member (30); a ring member (34) that has an inner ring (34b) which comes into contact with the pin member (30), a plurality of balls (34c) which roll on the inner ring (34b), and a retainer (34d); and a bush 36 that is disposed on an inner periphery of the inner ring (34b), and receives a component of force in a circumferential direction of the inner ring (34b) from the pin member (30) to rotate together with the inner ring (34b).

Подробнее
Номер записи: 62
17-04-2014 дата публикации

Screw compressor

Номер: US20140105773A1
Автор: Holger TYCHSEN
Принадлежит: Johnson Controls Technology Co

A screw compressor includes a housing having an inlet for receiving gas to be compressed by the compressor and an outlet for discharging pressurized compressed gas. A pair of meshing threaded rotors, each rotor having an axis and being rotatably received in the housing, each rotor having a first end near the inlet and a second end near the outlet. A bearing rotatably carrying each rotor about its axis and positioned near the first end and the second end of each rotor. A conduit formed in the housing in selectable fluid communication with at least one bearing and a force generating source from a pressurized fluid source, the force generating source selectably providing a force in a radial direction relative to the axis of the at least one bearing.

Подробнее
Номер записи: 63
28-01-2016 дата публикации

COMPRESSOR WITH CAPACITY MODULATION AND VARIABLE VOLUME RATIO

Номер: US20160025093A1
Автор: DOEPKER Roy J.
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A compressor is provided and may include a shell assembly defining a suction pressure region and a discharge pressure region. A first scroll member may include a first discharge port and a first modulation port. A second scroll member may include a first variable volume ratio port. A capacity modulation valve assembly may be in fluid communication with the first modulation port and may be displaceable between open and closed positions to selectively provide communication between a first intermediate compression pocket and the suction pressure region via the first modulation port. A variable volume ratio valve assembly may be in fluid communication with the first variable volume ratio port. The variable volume ratio valve assembly may be displaceable between open and closed positions to selectively provide communication between a second intermediate compression pocket and the discharge pressure region via the first variable volume ratio port. 1. (canceled)2. A compressor comprising:a shell assembly;a first scroll member disposed within said shell assembly, said first scroll member including a first end plate defining a discharge port and a first port and having a first spiral wrap extending from a first side thereof;a second scroll member disposed within said shell assembly and including a second end plate defining a second port and having a second spiral wrap extending therefrom and meshingly engaged with said first spiral wrap to form a suction-pressure pocket in fluid communication with a suction-pressure region disposed outside of said first and second spiral wraps, intermediate-pressure pockets, and a discharge-pressure pocket in fluid communication with a discharge-pressure region disposed outside of said first and second spiral wraps, a first of said intermediate-pressure pockets being in fluid communication with said first port and a second of said intermediate-pressure pockets being in fluid communication with said second port;a motor assembly driving ...

Подробнее
Номер записи: 64
28-01-2016 дата публикации

COMPRESSOR MOTOR WITH CENTER STATOR

Номер: US20160025094A1
Автор: IGNATIEV Kirill M., PEREVOZCHIKOV Michael M., SEIBEL Stephen M.
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A compressor is provided and may include a shell, a compression mechanism, a driveshaft, and a motor assembly. The compression mechanism may be disposed within the shell. The driveshaft is drivingly engaged with the compression mechanism. The motor assembly may be disposed within the shell and drivingly engaged with the driveshaft. The motor assembly may include a rotor, a stator, and a rotor support subassembly. The rotor may be disposed radially outwardly relative to the stator and fixed for rotation with the driveshaft. The rotor support subassembly may include a first support member coupled to the driveshaft and coupled to the rotor such that the driveshaft is operable to rotate with the rotor. 1. A compressor comprising:a shell;a compression mechanism disposed within said shell;a driveshaft rotatably supported by a first bearing and a second bearing and drivingly engaged with said compression mechanism;a bearing housing including a tubular portion in which said first and second bearings are disposed; anda motor assembly disposed within said shell and drivingly engaged with said driveshaft, said motor assembly including a rotor and a stator, said stator engaging an outer diametrical surface of said tubular portion, said rotor disposed radially outwardly relative to said stator and fixed for rotation with said driveshaft.2. The compressor of claim 1 , further comprising a support housing having a first side supporting said compression mechanism claim 1 , wherein said bearing housing is removably mounted to a second side of said support housing.3. The compressor of claim 2 , wherein said bearing housing includes a flange portion integrally formed with said tubular portion claim 2 , and wherein said flange portion is coupled to said support housing.4. The compressor of claim 3 , further comprising a counterweight fixed to said driveshaft between said compression mechanism and said flange portion of said bearing housing claim 3 , wherein said flange portion axially ...

Подробнее
Номер записи: 65
26-01-2017 дата публикации

POROUS OIL FLOW CONTROLLER

Номер: US20170022984A1
Автор: Bhatia Kanwal, White Steven C.
Принадлежит:

A compressor comprises a housing having a hollow interior for communicating a fluid comprising a mixture of a gas and a lubricant therethrough. The hollow interior of the housing is divided into a low pressure side and a high pressure side. The low pressure side is disposed upstream of compression mechanism and the high pressure side is disposed downstream of the compression mechanism. A porous flow controller fluidly couples the high pressure side to the low pressure side. The porous flow controller is configured to meter a flow of the lubricant from the high pressure side to the low pressure side. 1. A compressor comprising:a housing having a hollow interior for communicating a fluid therethrough, the hollow interior of the housing divided into a low pressure side and a high pressure side; anda porous flow controller fluidly coupling the high pressure side to the low pressure side, wherein the porous flow controller is configured to meter a flow of the fluid from the high pressure side to the low pressure side.2. The compressor of claim 1 , further comprising a compression mechanism claim 1 , wherein the low pressure side is disposed upstream of the compression mechanism in a direction of flow of the fluid and the high pressure side is disposed downstream of the compression mechanism.3. The compressor of claim 1 , wherein an oil separator is disposed in the high pressure side upstream of the porous flow controller in a direction of flow of the fluid.4. The compressor of claim 1 , wherein the fluid comprises a mixture of a gaseous refrigerant and an oil.5. The compressor of claim 4 , wherein a portion of the fluid being metered by the porous flow controller comprises a higher percentage of the oil by volume than the gaseous refrigerant.6. The compressor of claim 4 , wherein the oil flows directly from the high pressure side to the low pressure side through the porous flow controller.7. The compressor of claim 1 , wherein the porous flow controller is formed in one ...

Подробнее
Номер записи: 66
26-01-2017 дата публикации

SCREW COMPRESSOR

Номер: US20170022990A1
Автор: TYCHSEN Holger
Принадлежит:

A screw compressor includes a housing having an inlet for receiving gas to be compressed by the compressor and an outlet for discharging pressurized compressed gas. A pair of meshing threaded rotors, each rotor having an axis and being rotatably received in the housing, each rotor having a first end near the inlet and a second end near the outlet. A bearing rotatably carrying each rotor about its axis and positioned near the first end and the second end of each rotor. A conduit formed in the housing in selectable fluid communication with at least one bearing and a force generating source from a pressurized fluid source, the force generating source selectably providing a force in a radial direction relative to the axis of the at least one bearing. 2. The system of claim 1 , wherein the force generator comprises an actuator driven by an electric motor.3. The system of claim 1 , wherein the force generator utilizes a pressurized fluid to exert the first force.4. The system of claim 1 , comprising:a second shaft rotatable with respect to the housing, disposed within the housing, and having a second rotor axis extending axially within the second shaft;a third bearing disposed circumferentially about the second shaft at a third axial position along the second rotor axis; anda fourth bearing disposed circumferentially about the second shaft at a fourth axial position along the second rotor axis, wherein the fourth axial position is adjacent to the third axial position, and wherein the force generator, or an additional force generator, is configured to selectively exert a second force in the radial direction on a third outer surface of the third bearing, a fourth outer surface of the fourth bearing, or both based on a desired share, between the third and fourth bearings, of the operating load of the system.5. The system of claim 1 , wherein the system comprises a compressor having the housing claim 1 , the shaft claim 1 , and the first and second bearings.6. The system of ...

Подробнее
Номер записи: 67
25-01-2018 дата публикации

OLDHAM COUPLING FOR A SCROLL COMPRESSOR

Номер: US20180023393A1
Автор: DUGAST Philippe, ROSSON Yves
Принадлежит:

An Oldham coupling includes an annular ring having a first side and a second side opposite to the first side, a first and a second engaging groove that are diametrically opposed and located on the first side, and a third and a fourth engaging groove that are diametrically opposed and located on the second side. The first and second engaging grooves are configured to be engaged with a first and a second engaging projection provided on a fixed element. The third and fourth engaging grooves are configured to be engaged with a third and a fourth engaging projection provided on an orbiting scroll. The first and third engaging grooves are located in a first angular sector, and the second and fourth engaging grooves are located in a second diametrically opposed angular sector of the annular ring, the first and second angular sectors have an opening angle less than 40°. 1. An Oldham coupling for a scroll compressor , the Oldham coupling being configured to prevent relative rotation of an orbiting scroll and a non-orbiting scroll of the scroll compressor , the Oldham coupling including:an annular ring having a first side and a second side opposite to the first side;a first and a second engaging groove configured to be slidably engaged with a first and a second complementary engaging projection provided on a non-orbiting element, the first and second engaging grooves are diametrically opposed to each other and provided on the first side of the annular ring; wherein the first and third engaging grooves are located in a first angular sector of the annular ring, and the second and fourth engaging grooves are located in a second angular sector of the annular ring, diametrically opposed to the first angular sector, the first and second angular sectors each having an opening angle less than 40°; and', 'wherein a depth of the first engaging groove is less than a depth of the third engaging groove, and a depth of the second engaging groove is less than a depth of the fourth engaging ...

Подробнее
Номер записи: 68
25-01-2018 дата публикации

NATURAL GAS FUELED VEHICLE

Номер: US20180023516A1
Автор: Cai Mei, DAILLY Anne M., ZHANG Cunman, Zhou Wei
Принадлежит:

A natural gas fueled vehicle, includes a natural gas fueled Internal Combustion Engine (ICE) to provide motive power to the vehicle. A pressurizable tank is disposed on the vehicle to contain a natural gas. A natural gas adsorbent is disposed in the tank. A fuel supply tube is to convey the natural gas to the ICE. A scroll compressor is on the vehicle to receive the natural gas from the tank and to deliver a first mixture of compressed natural gas and an oil to a gas and oil separator. The gas and oil separator is to receive the first mixture of the compressed natural gas and the oil from the scroll compressor and to separate the oil from the compressed natural gas and to deliver the compressed natural gas to the fuel supply tube substantially free from the oil. 1. A natural gas fueled vehicle , comprising:a natural gas fueled Internal Combustion Engine (ICE) to provide motive power to the vehicle;a pressurizable tank disposed on the vehicle to contain a natural gas;a natural gas adsorbent disposed in the tank;a fuel supply tube to convey the natural gas to the ICE;a scroll compressor on the vehicle to receive the natural gas from the tank and to deliver a first mixture of a compressed natural gas and an oil to a gas and oil separator; andthe gas and oil separator to receive the first mixture of the compressed natural gas and the oil from the scroll compressor and to separate the oil from the compressed natural gas and to deliver the compressed natural gas to the fuel supply tube substantially free from the oil.2. The natural gas fueled vehicle as defined in wherein the gas and oil separator is a two-stage gas and oil separator having a first stage gas and oil separator in fluid communication with an output of the scroll compressor to separate a first portion of the oil from the first mixture of the compressed natural gas and the oil and discharge a second mixture of the compressed natural gas and the oil to be received by a second stage gas and oil separator to ...

Подробнее
Номер записи: 69
25-01-2018 дата публикации

SCROLL COMPRESSOR

Номер: US20180023570A1
Автор: HUANG Youling, YANG CHUN, ZENG Dang
Принадлежит: EMERSON CLIMATE TECHNOLOGIES (SUZHOU) CO., LTD.

A scroll compressor is provided, comprising: a compression mechanism comprising a non-orbiting scroll member and an orbiting scroll member, wherein the orbiting scroll member is axially displaceable between an engagement position and a disengagement position; a main bearing housing adapted to support the compression mechanism; a back pressure chamber formed between the orbiting scroll member and the main bearing housing, wherein the back pressure chamber is in communication with at least one of the compression chambers via a communication passage provided in the orbiting scroll member or the non-orbiting scroll member and is adapted to apply a back pressure to the orbiting scroll member to bias the orbiting scroll member toward the engagement position; and a first sealing means provided between the back pressure chamber and a suction zone of the compression mechanism and capable of maintaining sealing when the orbiting scroll member is axially displaced. 1. A scroll compressor , comprising:a compression mechanism comprising a non-orbiting scroll member and an orbiting scroll member, wherein the orbiting scroll member is axially displaceable between an engagement position, in which the orbiting scroll member and the non-orbiting scroll member are axially engaged with each other to form a series of compression chambers for compressing fluid, and a disengagement position, in which the orbiting scroll member is axially separated from the non-orbiting scroll member;a main bearing housing adapted to support the compression mechanism;a back pressure chamber formed between the orbiting scroll member and the main bearing housing, wherein the back pressure chamber is in communication with at least one of the compression chambers via a communication passage provided in the orbiting scroll member or the non-orbiting scroll member and is adapted to apply a back pressure to the orbiting scroll member to bias the orbiting scroll member toward the engagement position; anda first ...

Подробнее
Номер записи: 70
25-01-2018 дата публикации

OIL-FLOODED SCREW COMPRESSOR SYSTEM AND METHOD FOR MODIFYING THE SAME

Номер: US20180023571A1
Автор: ENDO Yasuaki
Принадлежит: MAYEKAWA MFG. CO., LTD.

An oil-flooded screw compressor system includes: a first lubricating oil supply system for supplying lubricating oil to screw parts; and a second lubricating oil supply system for supplying the lubricating oil to a bearing. The first lubricating oil supply system includes: a gas-liquid separator; a first supply flow passage; and a first supply path. The second lubricating oil supply system includes: a lubricating oil reservoir; a second supply flow passage; a second supply path; a first discharge flow passage; and a discharge path. It is possible to suppress dissolution of a gas to be compressed in lubricating oil and to suppress damage to a bearing due to deterioration of the performance of the lubricating oil, even in a case where the gas to be compressed is compatible with the lubricating oil. 1. An oil-flooded screw compressor system for compressing a gas to be compressed which is a compatible gas with lubricating oil , comprising: a male screw rotor and a female screw rotor each having a screw part and shaft portions formed on both ends of the screw part;', 'a housing having a screw chamber accommodating the screw parts inside and a bearing chamber accommodating the shaft portions inside; and', 'a bearing disposed in the bearing chamber, for rotatably supporting the shaft portions;, 'a screw compressor which includesa first lubricating oil supply system for supplying lubricating oil to the screw parts; anda second lubricating oil supply system for supplying the lubricating oil to the bearing, a gas-liquid separator configured to introduce discharge gas of the screw compressor therein and to separate the lubricating oil from the discharge gas;', 'a first supply flow passage formed through a housing wall which constitutes the housing, the first supply flow passage having an opening on an outer surface of the housing wall and being in communication with the screw chamber; and', 'a first supply path connected to a lubricating-oil storage region of the gas-liquid ...

Подробнее
Номер записи: 71
24-01-2019 дата публикации

COMPRESSOR HAVING CENTRIFUGATION STRUCTURE FOR SUPPLYING OIL

Номер: US20190024664A1
Автор: Choi Yong Kyu, Kim Cheol Hwan, Lee Byeongchul, Lee Kangwook
Принадлежит:

A scroll compressor is provided which is capable of supplying oil stored in an oil storage chamber upward through a rotary shaft to lubricate a bearing portion. The scroll compressor may include a casing in which oil is stored in an oil storage chamber formed at a lower portion of the casing, a drive motor provided in an inner space of the casing, a rotary shaft coupled to the drive motor and including an oil supply path configured to guide the oil stored in the oil storage chamber and at least one oil hole that passes from the oil supply path to an outer circumferential surface of the rotary shall a main frame coupled to the rotary shaft and provided under the drive motor, a fixed scroll coupled to the rotary shaft and provided under the main frame, and an orbiting scroll provided between the main frame and the fixed scroll, into which the rotary shaft is inserted and to which the rotary shaft is eccentrically coupled, the orbiting scroll performing an orbiting movement to form a compression chamber with the fixed scroll. The oil guided upward through the oil supply path may be discharged through the at least one oil hole and supplied to the outer circumferential surface of the rotary shaft. 1. A scroll compressor , comprising:a casing in which oil is stored in an oil storage chamber formed at a lower portion of the casing;a drive motor provided in an inner space of the casing;a rotary shaft coupled to the drive motor and including an oil supply path configured to guide the oil stored in the oil storage chamber upward and at least one oil hole that passes from the oil supply path to an outer circumferential surface of the rotary shaft;a main frame coupled to the rotary shaft and provided under the drive motor;a fixed scroll coupled to the rotary shaft and provided under the main frame; andan orbiting scroll provided between the main frame and the fixed scroll and into which the rotary shaft is inserted and to which the rotary shaft is eccentrically coupled, the ...

Подробнее
Номер записи: 72
23-01-2020 дата публикации

ORBITING SCROLL DEVICE LUBRICATION

Номер: US20200025204A1
Автор: Nicholas Nathan D., Shaffer Bryce R., Wilson John P.D.
Принадлежит:

A scroll device includes a fixed scroll with an idler shaft bearing, an orbiting scroll with another idler shaft bearing; and an eccentric idler shaft having first and second arms extending in opposite directions and ending at first and second ends, the first and second arms supported by the fixed scroll idler shaft bearing and the orbiting scroll idler shaft bearing, respectively. The eccentric idler shaft has a hollow core extending from the first end to the second end, with at least one channel extending through the first arm and enabling fluid communication between the hollow core and the at least one first bearing, and at least one second channel extending through the second arm and enabling fluid communication between the hollow core and the least one second bearing. 1. A scroll device comprising:a fixed scroll comprising at least one first bearing;an orbiting scroll comprising at least one second bearing;an eccentric idler shaft having a first arm terminating at a first end and supported by the at least one first bearing and a second arm terminating at a second end and supported by the least one second bearing, the eccentric idler shaft comprising a hollow core extending from the first end to the second end;at least one first channel extending through the first arm and enabling fluid communication between the hollow core and the at least one first bearing; andat least one second channel extending through the second arm and enabling fluid communication between the hollow core and the least one second bearing.2. The scroll device of claim 1 , further comprising an idler shaft cap secured to the fixed scroll claim 1 , the idler shaft cap defining a central passageway in fluid communication with the hollow core.3. The scroll device of claim 1 , further comprising an orifice plug removably secured within the central passageway.4. The scroll device of claim 1 , further comprising a plug removably secured within the hollow core proximate the second end claim 1 , the ...

Подробнее
Номер записи: 73
28-01-2021 дата публикации

VACUUM PUMP WITH AN OIL MANAGEMENT SYSTEM

Номер: US20210025393A1
Автор: Hong Tinggui
Принадлежит: Fieldpiece Instruments, Inc.

A vacuum pump system includes an air-cooled, O-ring sealed vacuum pump and an oil management system with an LED illuminated clear tank for observation of the oil condition as well as a large oil inlet and outlet for rapid and safe oil changes while the pump is operating. The oil management system is also configured to prevent oil from the sump from being drawn into an evacuated AC/R system when the pump is stopped and the intake ports are not sealed from the high vacuum AC/R system. The oil management system includes a preferential vacuum relief system that allows air instead of the oil from the sump to be drawn back into the evacuated lines. 1. A method of changing the oil in a vacuum pump system comprising the steps of: a vacuum pump with a spring biased oil bottle support platform with a raised and lowered positions and an empty oil bottle having an opening and a removable cap to open and close the opening;', 'an oil management system with an oil reservoir having a cover and a sump with oil, the sump having a drain port with a drain valve, the drain valve having an open and a closed position, the oil management system is optionally enclosed by a closeable oil management door;', 'an oil change reservoir in fluid communication with the oil management system and the vacuum pump, the oil change reservoir sized to contain sufficient oil to support vacuum pump operations while the oil management system is drained and refilled;', 'removing the cap from opening of the empty oil bottle;', 'opening the oil management door;', 'inclining the oil bottle support platform against the bias spring into the lowered position;', 'inserting the empty oil bottle between the support platform and the drain port;', 'raising the oil bottle support platform to the raised position to engage the opening of the empty oil bottle with the drain port;', 'rotating the drain valve to the open position to allow the oil in the sump to drain into the oil bottle;', 'rotating the drain valve into the ...

Подробнее
Номер записи: 74
28-01-2021 дата публикации

SCROLL COMPRESSOR

Номер: US20210025395A1
Автор: NAGAHARA Kenji
Принадлежит:

A scroll compressor includes a casing, a low-pressure space and a compression mechanism. The compression mechanism includes fixed and movable scrolls, a fluid chamber including first and second compression chambers, and an adjustment mechanism. The fluid chamber has different discharge start points between the first and second compression chambers. An oil inflow groove is formed in one sliding surface, and an oil relief passage is formed in the other sliding surface. The oil relief passage includes a communication portion that communicates with the oil inflow groove in a predetermined angular range, lubricating oil flowing from the oil inflow groove into the low-pressure space through the communication portion. The predetermined angular range is from a position between a discharge start point of the first compression chamber and a discharge start point of the second compression chamber to a position after the discharge start of the second compression chamber. 1. A scroll compressor comprising:a casing;a low-pressure space inside the casing; and a fixed scroll including a fixed-side end plate having a disk shape, and a fixed-side wrap having a spiral shape and rising from the fixed-side end plate, the fixed scroll being fixed to the casing,', 'a movable scroll including a movable-side end plate having a disk shape that substantially slides on the fixed-side end plate, and a movable-side wrap having a spiral shape that rises from the movable-side end plate and has a different circumferential length from the fixed-side wrap, the movable scroll being configured to make an eccentric rotational motion with respect to the fixed scroll while meshing with the fixed scroll,', 'a fluid chamber including a first compression chamber formed between an inner peripheral surface of the fixed-side wrap and an outer peripheral surface of the movable-side wrap, and a second compression chamber formed between an outer peripheral surface of the fixed-side wrap and an inner peripheral ...

Подробнее
Номер записи: 75
02-02-2017 дата публикации

ECCENTRIC MOVABLE VANE PUMP

Номер: US20170030352A1
Автор: Tang Bin
Принадлежит:

An eccentric movable vane pump includes a cylinder body, a first rotor, second rotors, and movable vanes of which the number is greater than or equal to 2. The first rotor is eccentrically disposed with the second rotors. One end of each of the movable vanes is rotatably connected to the first rotor, and the other ends of the movable vanes are rotatably connected to the second rotors. The first rotor is disposed on a main shaft. The cylinder body is provided with a fluid inlet and a fluid outlet respectively corresponding to an expansion area and a compression area of a space between adjacent movable vanes. The pump has a simple structure, high efficiency, low cost, multiple operation conditions, high stability, and a long service life, can operate in a high-speed/ultra-high speed range without being sealed by an elastic device, and has a small radial impact in operation. 112421242124214212142111616221. An eccentric movable vane pump , comprising: a cylinder body () , a first rotor () , second rotors () , and movable vanes () , wherein the first rotor () is eccentrically disposed with the second rotors (); one end of each of the movable vanes () is rotatably connected to the first rotor (); the second rotors () correspond one-to-one to the movable vanes () , and the number of the second rotors () and the number of the movable vanes () are greater than or equal to two; the other ends of the movable vanes () are rotatably connected to the second rotors (); the first rotor () is disposed on a main shaft (); and the cylinder body () is provided with a fluid inlet () and a fluid outlet () respectively corresponding to an expansion area and a compression area of a space between adjacent movable vanes ().242020201. The eccentric movable vane pump according to claim 1 , wherein the second rotors () are respectively provided with fixed vanes () claim 1 , and a volume of a space between adjacent fixed vanes () is periodically compressed and expanded claim 1 , such that the ...

Подробнее
Номер записи: 76
02-02-2017 дата публикации

Compressor With Thermally-Responsive Modulation System

Номер: US20170030354A1
Автор: Robert C. Stover
Принадлежит: Emerson Climate Technologies Inc

A compressor may include a first scroll, a second scroll and a modulation system. The first scroll may include a first endplate and a first spiral wrap. The second scroll may include a second endplate and a second spiral wrap interleaved with the first spiral wrap and cooperating to form a plurality of working fluid pockets therebetween. The modulation system may include a temperature-responsive displacement member that actuates in response to a temperature within a space rising above a predetermined threshold. Actuation of the displacement member may be controlled to control a capacity of the compressor.

Подробнее
Номер записи: 77
02-02-2017 дата публикации

SCREW COMPRESSOR

Номер: US20170030356A1
Автор: CHIBA Kotaro, IIZUKA Yasuaki, KATO Eisuke, Tsuchiya Takeshi, YONEMOTO Ryuichiro
Принадлежит:

A slide valve forming a part of a bore and movable in an axial direction of the rotors, foot sections on a discharge side end face of the slide valve, and discharge ports and on a discharge chamber side of the slide valve in order to discharge compressed gas taken into a compression operation chamber from the suction chamber and compressed. At a discharge side end portion of the slide valve, first discharge channels and lead the compressed gas discharged from the discharge port and lead the compressed gas to the discharge chamber and second discharge channels are provided on a radial direction outer side of the first discharge channel and opened to the first discharge channels and the discharge chamber to lead a part of the compressed gas flowing in the first discharge channels and feed the part of the compressed gas to the discharge chamber. 1. A screw compressor comprising:a male rotor;a female rotor that meshes with the male rotor;a casing that includes a bore for housing the male rotor and the female rotor and in which a suction chamber is formed on a suction side and a discharge chamber is formed on a discharge side;a slide valve forming a part of the bore and provided to be movable in an axial direction of the male rotor and the female rotor;foot sections provided on a discharge side end face of the slide valve and for supporting the slide valve in the casing; anda discharge port provided on a discharge side of the slide valve in order to discharge, to the discharge chamber, compressed gas taken into a compression operation chamber formed by the male rotor, the female rotor, and the casing from the suction chamber and compressed, whereinat a discharge side end portion of the slide valve, a first discharge channel for leading the compressed gas discharged from the discharge port and leading the compressed gas to the discharge chamber and a second discharge channel provided on a radial direction outer side of the first discharge channel and opened to the first ...

Подробнее
Номер записи: 78
04-02-2016 дата публикации

CAPACITY MODULATED SCROLL COMPRESSOR

Номер: US20160032924A1
Автор: Stover Robert C.
Принадлежит:

A compressor may include a first scroll member having a first spiral wrap, a first chamber, and a first aperture. A second scroll member may include a second spiral wrap engaged with the first spiral wrap to form a series of compression pockets and a second aperture. The first aperture may be in communication with a first of the compression pockets to provide communication between the first compression pocket and the first chamber. The second aperture may be in communication with a second of the compression pockets. A capacity modulation assembly may include a first piston preventing communication between the first aperture and a first passage when in a first position and providing communication when in a second position. A second piston may prevent communication between the second aperture and a third passage when in the first position, and provide communication when in a second position. 1. A compressor comprising:a housing including a discharge pressure region and a suction pressure region;a first scroll member supported within said housing and having a first end plate, a first spiral wrap extending from a first side of said first end plate, a first chamber located on a second side of said first end plate having first and second passages in communication therewith, and a first aperture extending through said first end plate and in communication with said first chamber,a second scroll member supported within said housing and including a second end plate having a second spiral wrap extending therefrom and meshingly engaged with said first spiral wrap to form a series of compression pockets and a second aperture extending therethrough, said first aperture being in communication with a first of said compression pockets to provide communication between said first compression pocket and said first chamber and said second aperture being in communication with a second of said compression pockets; and a first piston located within said first chamber and displaceable ...

Подробнее
Номер записи: 79
04-02-2016 дата публикации

REVOLVING PISTON ROTARY COMPRESSOR WITH STATIONARY CRANKSHAFT

Номер: US20160032925A1
Автор: Dreiman Nelik I.
Принадлежит:

A revolving piston rotary compressor comprises, in combination, the following: a compressor pump; an internal suction gas delivery system which eliminates an external accumulator, excludes a direct distribution of a refrigerant to the suction chamber and performs double-stage liquid-gas separation to prevent slugging, provides cooling of the motor and supercharges refrigerant into suction chamber due to action of an impeller; a discharge system utilizing a tubular discharge valve, a circular expansion cavity equipped with a plurality of reaction nozzles through which the discharge gas is jets ejected rearwards relatively to the intended direction of the revolving piston assembly rotation, said jets that impart driving moment which supplements the main momentum; a lubricating oil delivery system employing a positive displacement oil pump, an oil reservoir formed in the crankshaft and a plurality of oil accumulated annular pockets which prevent formation of “gas lock” condition and accelerate delivery of oil to the bearing and mating surfaces, said oil which will not only lubricate, but will also prevents leakage through the clearances by providing liquid seal with combine pressure-discharge pressure, pumping pressure and pressure developed due to centrifugal forces. An external rotor electric motor of the compressor has been integrated with a pump parts to form the compressor pump arranged on a stationary crankshaft and surrounding by a housing fixed to opposite ends of the crankshaft and having no another contacts with the pump. A stator of the motor is permanently fixed on the stationary crankshaft and the compressor pump components—a rotor block and an eccentrically fit revolving piston assembly are unidirectional spinning around the crankshaft. The rotor block and the revolving piston assembly have no radial clearance internal line contact through which the rotor block transfers an angular moment to the revolving piston assembly. It is not only supplements main ...

Подробнее
Номер записи: 80
01-02-2018 дата публикации

Systems and methods for assessing the health of a first apparatus by monitoring a dependent second apparatus

Номер: US20180030851A1
Автор: Floyd R. Emmons
Принадлежит: United Technologies Corp

Systems and methods for assessing the health of a first apparatus by monitoring a second apparatus are described herein. A method for monitoring a health of a first apparatus may comprise receiving a performance parameter from a second apparatus, wherein performance of the second apparatus is dependent upon the health of the first apparatus, assessing the performance parameter, and determining the health of the first apparatus. In various embodiments, the performance parameter may comprise at least one of a speed value of the second apparatus, a position value of the second apparatus, a temperature value of the second apparatus, or a time value of the second apparatus.

Подробнее
Номер записи: 81
01-02-2018 дата публикации

VACUUM PUMP WITH COOLING APPARATUS

Номер: US20180030983A1
Автор: Lee In Cheol
Принадлежит:

The present invention relates to a technology of efficiently cooling a vacuum pump that produces a vacuum in a process chamber of a semiconductor manufacturing facility. The present invention provides a new type of vaccum pump cooling method that keeps the internal temperature of a vacuum pump at a predetermined level by circulating oil through rotors of the vacuum pump, such that it is possible to prevent a rapid increase in the temperature of the vacuum pump and smoothly lubricate bearings at the early stage of operation, whereby it is possible to ensure stability when performing processes and operating the pump and economically maintain the facility. 1. A vacuum pump with a cooling apparatus , comprising:{'b': 12', '10', '11, 'a pump housing () having an inlet () for receiving gas and an outlet () for discharging gas;'}{'b': 13', '13', '12, 'i': a', 'b, 'a pair of rotors (, ) supported at both ends in the pump housing () and generating vacuum pressure by rotating in mesh with each other;'}{'b': 14', '13', '13', '13, 'i': a', 'a', 'b, 'a motor () connected to a shaft of the rotor () to drive the rotors (, ); and'}{'b': 15', '13', '13, 'i': a', 'b, 'gears () for cooperation between the rotors (, );'}{'b': 31', '12, 'a first temperature sensor () disposed at a gas inlet side of the pump housing () to detect temperature of gas;'}{'b': 32', '18, 'a second temperature sensor () disposed in a main oil line of the oil supply unit () to detect temperature of oil; and'}{'b': 33', '31', '32, 'a micro processor () variably controlling temperature of oil on the basis of temperature values input from the first temperature sensor () and the second temperature sensor (),'}{'b': 16', '13', '13', '17', '16', '17', '18', '13', '13', '16, 'i': a', 'b', 'a', 'b, 'wherein holes () are formed in parallel along axial lines of the rotors (, ), oil supply pipes () are disposed in the holes (), oil is supplied into the oil supply pipes () from an oil supply unit (), and the oil cools the ...

Подробнее
Номер записи: 82
17-02-2022 дата публикации

Method for Controlling a Compressor Installation

Номер: US20220049693A1
Автор: Oppel Thomas
Принадлежит: Kaeser Kompressoren SE

A method for controlling a compressor system comprising a plurality of compressors, wherein the compressor system is intended to maintain a predefined excess pressure in a pressurized fluid system, wherein decisions are met at fixed or variable intervals as to switching operations for adapting the system to current conditions, wherein —in a pre-selecting step, switching alternatives are excluded from the plurality of combinatorially available switching alternatives, —in a main selecting step, remaining switching alternatives are weighed against one another while referring to one or more optimization criterion (criteria) and optimum switching alternatives are selected from among the given criteria, and —in a control step, the selected switching alternative is output for implementation in the compressor system. 1. A method for controlling a compressor system including a plurality of compressors , each compressor optionally having a different design or performance , the compressor system maintaining a predefined excess pressure in a pressurized fluid system despite a withdrawal of pressurized fluid from the pressurized fluid system , the method comprising the steps of:excluding one or more switching alternatives from a plurality of available switching alternatives based on current conditions of the pressurized fluid system,evaluating the plurality of switching alternatives other than the excluded switching alternatives based on an optimization criterion,selecting a switching alternative from the plurality of switching alternatives based on the evaluation, andoutputting the selected switching alternative to the compressor system,wherein selecting the switching alternative occurs at fixed or variable intervals.2. The method according to claim 1 , further comprising:increasing generation of the pressurized fluid upon reaching a switch-on pressure and reducing generation of compressed pressurized fluid upon reaching a switch-off pressure.3. A method for controlling a ...

Подробнее
Номер записи: 83
31-01-2019 дата публикации

Compressor Unit and Method for Operating a Compressor Unit

Номер: US20190032655A1
Автор: Feller Klaus, Loerch Roni, Mikulic Tihomir
Принадлежит:

A compressor unit including a screw compressor having a compressor housing that has a screw rotor chamber arranged in the compressor housing, two screw rotors that are arranged in the screw rotor chamber and are mounted on the compressor housing to be rotatable about a respective screw rotor axis, and at least one control slider, which is arranged in a slider channel of the compressor housing, is adjacent to both screw rotors and is movable in a direction of displacement parallel to the screw rotor axes and takes a form such that it affects the final volume and/or the initial volume, wherein there is provided on the screw compressor a compressor operational control unit that takes a form such that it performs a compressor operating function that assists at least one operation of the compressor unit. 1. A compressor unit , including a screw compressor having a compressor housing that has a screw rotor chamber arranged in the compressor housing , at least one screw rotor that is arranged in the screw rotor chamber , is mounted on the compressor housing to be rotatable about a screw rotor axis and receives gaseous medium having an initial volume that is supplied by way of a low-pressure chamber arranged in the compressor housing and discharges it , compressed to a final volume , in the region of a high-pressure chamber arranged in the compressor housing , and at least one control slider , which is arranged in a slider channel of the compressor housing , is adjacent to the screw rotor and is movable in a direction of displacement parallel to the screw rotor axis and takes a form such that it affects the final volume and/or the initial volume ,there is provided on the screw compressor a compressor operational control unit that takes a form such that it performs a compressor operating function that assists at least one operation of the compressor unit.2. A compressor unit according to claim 1 , wherein the at least one compressor operating function is a parameter ...

Подробнее
Номер записи: 84
31-01-2019 дата публикации

SCROLL COMPRESSOR AND AIR CONDITIONING APPARATUS INCLUDING THE SAME

Номер: US20190032659A1
Автор: MIZUSHIMA Yasuo, MURAKAMI Yasuhiro, NAKAI Ryouta, NORO Masahiro
Принадлежит: DAIKIN INDUSTRIES, LTD.

A scroll compressor includes a fixed scroll and a movable scroll. The fixed scroll has a spiral fixed-side wrap positioned upright on a surface of a fixed-side plate. The movable scroll is orbitably disposed to face the fixed scroll. The movable scroll has a spiral movable-side wrap positioned upright on a surface of a movable-side plate, with the movable-side wrap being configured to mesh with the fixed-side wrap. A side clearance is formed between a side surface of the fixed-side wrap and a side surface of the movable-side wrap so as to increase from an outer peripheral side toward an inner peripheral side of each of the wraps. 1. A scroll compressor , comprising:a fixed scroll having a spiral fixed-side wrap positioned upright on a surface of a fixed-side plate; anda movable scroll orbitably disposed to face the fixed scroll, the movable scroll having a spiral movable-side wrap positioned upright on a surface of a movable-side plate, the movable-side wrap being configured to mesh with the fixed-side wrap,a side clearance being formed between a side surface of the fixed-side wrap and a side surface of the movable-side wrap so as to increase from an outer peripheral side toward an inner peripheral side of each of the wraps.2. The scroll compressor according to claim 1 , whereinthe increase in the side clearance is set such that the side clearance approaches a uniform state from the outer peripheral side to the inner peripheral side during an orbiting operation of the movable scroll.3. The scroll compressor according to claim 1 , whereinthe increase in the side clearance is set such that an increase rate of the side clearance becomes larger from the outer peripheral side toward the inner peripheral side.4. The scroll compressor according to claim 1 , whereinthe increase in the side clearance is obtained by decreasing a tooth thickness of at least one of the fixed-side wrap and the movable-side wrap from the outer peripheral side toward the inner peripheral side.5. ...

Подробнее
Номер записи: 85
31-01-2019 дата публикации

VACUUM PUMP WITH AN OIL MANAGEMENT SYSTEM

Номер: US20190032662A1
Автор: Hong Tinggui
Принадлежит: Fieldpiece Instruments, Inc.

A vacuum pump system includes an air-cooled, O-ring sealed vacuum pump and an oil management system with an LED illuminated clear tank for observation of the oil condition as well as a large oil inlet and outlet for rapid and safe oil changes while the pump is operating. The oil management system is also configured to prevent oil from the sump from being drawn into an evacuated AC/R system when the pump is stopped and the intake ports are not sealed from the high vacuum AC/R system. The oil management system includes a preferential vacuum relief system that allows air instead of the oil from the sump to be drawn back into the evacuated lines. 1. A vacuum pump system comprising:a vacuum pump having a volute and at least one bearing wherein the gas input to the vacuum pump is configured to be above the drive shaft when the vacuum pump system is configured to operate;an oil management system in fluid communication with the vacuum pump, the oil management system having a primary oil reservoir with a first volume and an oil change reservoir with a second volume, wherein the primary oil reservoir and the oil change reservoir are in fluid communication with an oil pump, and wherein the first volume is larger than the second volume; andwherein the second volume is smaller than the vacuum pump volute.2. The vacuum pump system of where the oil management system further comprises:an oil pump discharge port in the oil change reservoir operably connected to the oil pump; andwherein the oil change reservoir is configured to allow oil in the oil change reservoir to overflow the volume of the oil change reservoir and flow into the primary oil reservoir and the oil pump is adapted to circulate oil from the primary oil reservoir to the oil change reservoir.3. The vacuum pump system of where the oil management system further comprises:an oil flow path from the oil change reservoir to the at least one bearing in the vacuum pump.4. The vacuum pump system of wherein the oil change ...

Подробнее
Номер записи: 86
31-01-2019 дата публикации

Refrigerant Compressor Unit

Номер: US20190032666A1
Автор: Feller Klaus, Mikulic Tihomir
Принадлежит:

A refrigerant compressor unit, including a compressor housing and at least one compressor element that is arranged in the compressor housing, is movable by bearing and drive parts, and operates in at least one compressor chamber, at least one lubricant supply point arranged in the compressor housing for at least one of the bearing and drive parts and/or compressor element, and a lubricant supply line to the at least one lubricant supply point, wherein the lubricant supply line has a lubricant storage chamber through which lubricant flows and in which a lubricant presence sensor is arranged for detecting the presence of lubricant in the lubricant storage chamber. 1. A refrigerant compressor unit , including a compressor housing and at least one compressor element that is arranged in the compressor housing , is movable by bearing and drive parts , and operates in at least one compressor chamber , at least one lubricant supply point arranged in the compressor housing for at least one of the bearing and drive parts and/or compressor element , and a lubricant supply line to the at least one lubricant supply point ,the lubricant supply line has a lubricant storage chamber through which lubricant flows and in which a lubricant presence sensor is arranged for detecting lubricant in the lubricant storage chamber.2. A refrigerant compressor unit according to claim 1 , wherein the lubricant presence sensor is an optical sensor.3. A refrigerant compressor unit according to claim 1 , wherein the optical lubricant presence sensor is arranged with a sensor surface that detects the presence of lubricant adjacent to the lubricant storage chamber.4. A refrigerant compressor unit according to claim 2 , wherein the lubricant storage chamber forms claim 2 , in relation to the rest of the flow sections of the lubricant supply line claim 2 , an unthrottled section claim 2 , and for example takes a form having a widened cross section by comparison with the rest of the flow sections of the ...

Подробнее
Номер записи: 87
30-01-2020 дата публикации

SCROLL COMPRESSOR AND METHOD OF MANUFACTURING THE SCROLL COMPRESSOR

Номер: US20200032796A1
Автор: ISHIZONO Fumihiko, Koyama Shuhei, TAKAI Akihito
Принадлежит:

A scroll compressor includes an orbiting scroll, a fixed scroll, and a shell. The fixed scroll is configured to form a compression chamber together with the orbiting scroll. The shell accommodates the orbiting scroll and the fixed scroll. The fixed scroll includes a base plate and a scroll body. The base plate is fixed to the shell. The scroll body projects from the base plate toward the orbiting scroll. The base plate has a stress absorber that is formed outside the scroll body in a radial direction and that is configured to absorb stress from an outer region in the radial direction. A weld joint is formed in an overlap region where the shell and the base plate are fixed to each other and overlap each other. The stress absorber is provided on a line that passes through a center of the base plate and the weld joint. 1. A scroll compressor , comprising:an orbiting scroll;a fixed scroll configured to form a compression chamber together with the orbiting scroll; anda shell that accommodates the orbiting scroll and the fixed scroll,the fixed scroll includinga base plate fixed to the shell, anda scroll body that projects from the base plate toward the orbiting scroll,the base plate having a plurality of stress absorbers that are formed outside the scroll body in a radial direction and that are each configured to absorb stress from an outer region in the radial direction,a plurality of weld joints being formed in an overlap region where the shell and the base plate are fixed to each other and overlap each other,the plurality of stress absorbers each being provided on a line that passes through a center of the base plate and a corresponding one of the plurality of weld joints.2. The scroll compressor of claim 1 ,wherein the shell has a first inner wall surface and a first projection that projects from the first inner wall surface and that serves as a location at which the fixed scroll is positioned, andwherein the fixed scroll is fixed to the first inner wall surface.3. ...

Подробнее
Номер записи: 88
30-01-2020 дата публикации

MOTOR-OPERATED COMPRESSOR

Номер: US20200032798A1
Автор: CHOI Soonyong, HER Jongtae, JANG Kitae, KIM Jehoon
Принадлежит: LG ELECTRONICS INC.

A motor-operated compressor includes: a fixed scroll; an orbiting scroll engaged with the fixed scroll to perform an orbiting motion and forming a pair of compression chambers together with the fixed scroll during the orbiting motion; a frame provided opposite to the fixed scroll with the orbiting scroll interposed therebetween, and forming a back pressure chamber so as to axially support the orbiting scroll; and a rotation shaft coupled to the frame and the orbiting scroll in a penetrating manner. The rotation shaft is supported by the frame in a first axial direction and rotatably coupled to the fixed scroll, and an elastic member is disposed between the fixed scroll and the rotation shaft to support the rotation shaft in a second axial direction opposite to the first axial direction with respect to the first scroll. 1. A motor-operated compressor , comprising:a fixed scroll;an orbiting scroll engaged with the fixed scroll and configured to perform an orbiting motion relative to the fixed scroll, and the orbiting scroll and the fixed scroll forming a pair of compression chambers therebetween during the orbiting motion;a frame disposed opposite to the fixed scroll with the orbiting scroll interposed between the frame and the fixed scroll, a back pressure chamber being formed between the frame and the orbiting scroll, and the back pressure chamber being configured to axially support the orbiting scroll;a rotation shaft coupled to the frame and the orbiting scroll and penetrating through the frame and the orbiting scroll, and the rotation shaft being supported on the frame in a first axial direction and rotatably coupled to the fixed scroll; andan elastic member disposed between the fixed scroll and the rotation shaft, the elastic member being configured to support the rotation shaft in a second axial direction opposite to the first axial direction with respect to the fixed scroll.2. The motor-operated compressor of claim 1 , wherein:the fixed scroll includes a ...

Подробнее
Номер записи: 89
30-01-2020 дата публикации

METHOD FOR OPERATION CONTROL OF COMPRESSOR AND THE COMPRESSOR

Номер: US20200032801A1
Автор: OGUMA Takahiro, OTA Hiroyuki
Принадлежит:

In a method for operation control of a compressor, full-load running in which a gas intake control valve is fully open and a target rotation speed of a drive source is set to a full-load rotation speed that is a maximum rotation speed in a speed control band when pressure of compressed gas supplied to the consumption side is a datum pressure or less is carried out; then no-load running in which the valve is fully closed and a no-load rotation speed is set as the target rotation speed of the drive source when the supply pressure is a no-load running pressure or less that is a pressure higher than the datum pressure is carried out. The no-load running is started from the standard no-load rotation speed, however, after a transition time, the target rotation speed is reduced to a low speed no-load rotation speed. 1. A method for operation control of a compressor to perform capacity control configured by control of a gas intake rate using a gas intake control valve provided in a gas intake port of a compressor body and by control of a rotation speed of a drive source driving the compressor body so that a pressure of compressed gas supplied to a consumption side lies within a predetermined range , the capacity control comprising:full-load running in which the gas intake control valve is fully open and a target rotation speed of the drive source is set to a full-load rotation speed that is a maximum rotation speed in a speed control band when a supply pressure that is a pressure of compressed gas supplied to the consumption side is equal to or less than a predetermined datum pressure; andno-load running in which the gas intake control valve is fully closed and a predetermined no-load rotation speed is set as the target rotation speed of the drive source, when the supply pressure is equal to or greater than a no-load running pressure that is a predetermined pressure higher than the datum pressure;starting the no-load running with a predetermined standard no-load rotation ...

Подробнее
Номер записи: 90
05-02-2015 дата публикации

DOUBLE-ENDED SCROLL COMPRESSOR LUBRICATION OF ONE ORBITING SCROLL BEARING VIA CRANKSHAFT OIL GALLERY FROM ANOTHER ORBITING SCROLL BEARING

Номер: US20150037184A1
Автор: Benco Michael Gerard, Heger Joseph M., Lepak Derrick, Novak Keith Adam, Rood Jerry Allen, Smerud Scott Joseph
Принадлежит:

A scroll compressor orbiting scroll bearing lubrication system includes a scroll compressor crankshaft having a lubricating fluid gallery extending therethrough between a first stage orbiting scroll and a second stage orbiting scroll. The first stage employs an orbiting scroll radial bearing and an orbiting scroll hydrodynamic thrust bearing, while the second stage employs an orbiting scroll radial bearing and an orbiting scroll hydrostatic thrust bearing. Lubricating fluid is supplied to the second stage orbiting scroll radial bearing via the lubricating fluid gallery. 1. A scroll compressor orbiting scroll bearing lubrication system , comprising:a lubricating fluid sump storing a lubricating fluid pressurized higher than the scroll compressor suction pressure; a first eccentric drive pin extending from a first end of the crankshaft, wherein the first drive pin is rotatably disposed at least partially within a first radial orbital bearing and configured to engage a first orbiting scroll comprising a baseplate and a spiral wrap element extending from the baseplate, and further comprising one or more oil passages in the baseplate;', 'a second eccentric drive pin extending from a second end of the crankshaft, wherein the second drive pin is rotatably disposed at least partially within a second radial orbital bearing and configured to engage a second orbiting scroll;, 'a compressor crankshaft comprisingan orbiting scroll hydrodynamic thrust bearing associated with the first orbiting scroll,wherein the first radial orbital bearing and the orbiting scroll hydrodynamic thrust bearing are configured to receive lubricating fluid from the lubricating fluid sump via the one or more oil passages in the first orbiting scroll baseplate;2. The scroll compressor orbiting scroll bearing lubrication system according to claim 1 , further comprising a bearing housing containing one or more oil supply passages claim 1 , wherein the first radial orbital bearing and orbiting scroll ...

Подробнее
Номер записи: 91
05-02-2015 дата публикации

ORBITING CRANKSHAFT DRIVE PIN AND ASSOCIATED DRIVE PIN SLEEVE GEOMETRY

Номер: US20150037185A1
Автор: Benco Michael Gerard, Gorski Wayne Gerard, Novak Keith Adam, Rood Jerry Allen, Smerud Scott Joseph
Принадлежит:

A compressor crankshaft assembly includes a crankshaft and an eccentric drive pin extending from one end of the crankshaft. The shape of the drive pin viewed into the exposed end of the drive pin is defined by the intersection of a first cylinder that is coaxial with the axis of a substantially cylindrical orbital bearing journaled and installed to receive the eccentric drive pin and a second cylinder that is coaxial with the axis of a substantially cylindrical main bearing journaled and installed to rotatably receive the crankshaft, such that the area defined by the intersecting portion is less than the area defined by either cylinder. 1. A compressor crankshaft assembly comprising:a substantially cylindrical main bearing;a crankshaft rotatably disposed at least partially within the substantially cylindrical main bearing;a substantially cylindrical orbital bearing; andan eccentric drive pin extending from one end of the crankshaft and rotatably disposed at least partially within the substantially cylindrical orbital bearing, wherein the shape of the drive pin viewed into the exposed end of the drive pin is defined by the intersection of a cylinder that is coaxial with the axis of the orbital bearing and a cylinder that is coaxial with the axis of the main bearing such that the area defined by the intersecting portion is less than the area defined by either cylinder.2. The compressor crankshaft assembly according to claim 1 , further comprising an eccentric drive pin sleeve pressed claim 1 , or shrunk around claim 1 , or fixedly attached to the eccentric drive pin.3. The compressor crankshaft assembly according to claim 1 , further comprising an eccentric drive pin sleeve between the orbital bearing and the eccentric drive pin claim 1 , wherein the drive pin sleeve includes an inside surface shaped so as to receive the eccentric drive pin claim 1 , the inside surface being defined by the intersection of the cylinder that is coaxial with the axis of the orbital ...

Подробнее
Номер записи: 92
05-02-2015 дата публикации

STRUCTURE FOR STABILIZING AN ORBITING SCROLL IN A SCROLL COMPRESSOR

Номер: US20150037186A1
Автор: Benco Michael Gerard, Lakowske Rodney, Rood Jerry Allen, Sauls John Robert, Smerud Scott Joseph
Принадлежит:

A scroll compressor includes one or more stage of compression disposed within a compressor housing. One or more of the stages includes a stationary scroll member including a base and a generally spiral wrap extending from the base of the stationary scroll member. One or more of the stages further includes an orbiting, scroll member including a substantially circular base and a substantially spiral wrap extending from the base of the orbiting scroll member. A coupling is disposed between the first scroll member base and the second scroll member base and in surrounding relationship to the first and second scroll member spiral wraps. At least one stabilizing pad is disposed between the first scroll member base and the second scroll member base and in axial thrust force relationship with the coupling to at least partially prevent tipping of the second scroll member. 1. A scroll compressor , comprising:a compressor housing; a first, stationary, scroll member comprising a base and a generally spiral wrap extending from the base of the first, stationary, scroll member; and', 'a second, orbiting, scroll member comprising a substantially circular base and a generally spiral wrap extending from the base of the second, orbiting scroll member;, 'an output stage of compression disposed within the compressor housing, the output stage comprisinga coupling disposed between the first scroll member base and the second scroll member base and in surrounding relationship to the first and second scroll member spiral wraps;the scroll compressor further comprising at least one of:one or more stabilizing pads disposed on the base of the first scroll member and configured to at least partially stabilize an axial thrust force between the coupling and the base of the first scroll member to at least partially prevent tipping of the second scroll member;one or more stabilizing pads disposed on the base of the second scroll member and configured to at least partially stabilize an axial thrust ...

Подробнее
Номер записи: 93
05-02-2015 дата публикации

SCROLL COMPRESSOR

Номер: US20150037189A1
Автор: INADA Yukihiro, Matsukawa Kazuhiko, SATA Kenichi, Shibamoto Yoshitaka, Sotojima Takazou
Принадлежит:

A scroll compressor includes a fixed scroll and an orbiting scroll. Each of the fixed and orbiting scrolls includes an end plate and a spiral wrap standing on a front surface of the end plate. The scrolls are arranged such that the front surfaces of the end plates face each other and the wraps are engaged with each other. The orbiting scroll eccentrically rotates, without turning on an axis thereof, with respect to the fixed scroll to compress fluid in compression chambers respectively formed inside and outside the wrap of the orbiting scroll. Each wrap is formed in a shape such that at least one of the compression chambers serves as a rate-reduced compression chamber where a volume change rate thereof is reduced in a middle of a compression phase. 1. A scroll compressor comprising:a fixed scroll; andan orbiting scroll an end plate and', 'a spiral wrap standing on a front surface of the end plate,, 'each of the fixed scroll and the orbit in scroll including'}the fixed scroll and the orbiting scroll being arranged such that the front surfaces of the end plates face each other and the wraps are engaged with each other,the orbiting scroll eccentrically rotates, without turning on an axis thereof, with respect to the fixed scroll to compress fluid in compression chambers respectively formed inside and outside the wrap of the orbiting scroll, andeach wrap of the fixed scroll and the orbiting scroll being formed in a shape such that at least one of the compression chambers serves as a rate-reduced compression chamber where a volume change rate thereof is reduced in a middle of a compression phase.2. The scroll compressor of claim 1 , whereineach wrap of the fixed scroll and the orbiting scroll is formed in an involute curve shape, anda side surface of each wrap facing the rate-reduced compression chamber is formed in a shape of a modified involute curve such that a base circle radius decreases in a stepwise manner from an outer end to an inner end of each wrap.3. The ...

Подробнее
Номер записи: 94
05-02-2015 дата публикации

Axially Compliant Orbiting Plate Scroll and Scroll Pump Comprising the Same

Номер: US20150037191A1
Автор: FORNI Ronald J.
Принадлежит:

An orbiting plate scroll of a scroll pump includes an orbiting plate having a first side and a second side, an orbiting scroll blade projecting in an axial direction from the first side of the orbiting plate, and a flexure whose compliance is in the axial direction. The flexure is coupled to the orbiting plate at the second side of the orbiting plate, and couples the orbiting plate and orbiting scroll blade to bearings that allow for free rotation of the orbiting plate scroll about a longitudinal axis, while constraining motion of the orbiting plate scroll in the remaining degrees of freedom. 1. An orbiting plate scroll , comprising:an orbiting plate having a first side and a second side;an orbiting scroll blade projecting in an axial direction from the first side of the orbiting plate; anda flexure coupled to the orbiting plate at the second side of the orbiting plate, and wherein the compliance of the flexure is substantially only in the axial direction.2. The orbiting plate scroll of claim 1 , wherein the flexure comprises a cylindrical hub whose central longitudinal axis extends in the axial direction claim 1 , and a flange that extends from the hub and connects the hub to the orbiting plate claim 1 , andwherein the flange comprises a web that is spaced axially from the orbiting plate with the flexure relaxed such that a gap exists between the web and the orbiting plate, and a union integral with the web and by which the flexure is integrated with the orbiting plate.3. The orbiting plate scroll of claim 2 , wherein the web has the form of a disc that spans the hub and the union claim 2 , the union is an annular member claim 2 , and the thickness of the web in the axial direction is less than that of the union.4. The orbiting plate scroll of claim 2 , wherein the web extends from the hub to the union in a direction perpendicular to the axial direction.5. The orbiting plate scroll of claim 2 , wherein an interference fit couples the flange and the orbiting plate ...

Подробнее
Номер записи: 95
01-05-2014 дата публикации

METHOD FOR ROTARY POSITIVE DISPLACEMENT PUMP PROTECTION

Номер: US20140119966A1
Автор: SEMIDEY Robert, STAVALE Anthony E.
Принадлежит: ITT Manufacturing Enterprises LLC

Techniques are provided for protecting a rotary positive displacement pump. The techniques include apparatus featuring a signal processor configured to receive signaling containing information about power, torque, speed, viscosity and specific gravity related to the operation of a pump; and determine whether to enter an enhanced pump protection mode for the rotary positive displacement pump based at least partly on a relationship between an actual corrected tune ratio and a tuned ratio set point (Tune Ratio SP). The signal processor may determine if the actual corrected tune ratio is less than or equal to the actual corrected tune ratio set point (Tune Ratio SP), and if so, then to enter the enhanced pump protection mode, else to continue to use a basic pump protection mode, and may also determine the actual corrected tune ratio based at least partly on a ratio of an actual corrected power (PAcorr) divided by a tuned corrected power (PTcorr) at a specific operating speed 1. Apparatus comprising:a signal processor configured toreceive signaling containing information about power, torque and speed related to the operation of a rotary positive displacement pump; anddetermine whether to enter an enhanced pump protection mode for the rotary positive displacement pump based at least partly on a relationship between an actual corrected tune ratio and a tuned ratio set point (Tune Ratio SP).2. Apparatus according to claim 1 , wherein the signal processor is configured to determine if the actual corrected tune ratio is less than or equal to the actual corrected tune ratio set point (Tune Ratio SP) claim 1 , and if so claim 1 , then to enter the enhanced pump protection mode claim 1 , else to continue to use a basic pump protection mode.3. Apparatus according to claim 1 , wherein the signal processor is configured to determine the actual corrected tune ratio based at least partly on a ratio of an actual corrected power (PAcorr) divided by a tuned corrected power (PTcorr) at a ...

Подробнее
Номер записи: 96
01-05-2014 дата публикации

Scroll Fluid Machine

Номер: US20140119970A1
Автор: IWANO Kiminori, KANEMOTO Yoshiyuki, KOBAYASHI Yoshio, TASHIRO Koichi
Принадлежит: Hitachi Industrial Equipment Systmes Co., Ltd.

A scroll fluid machine is provided that includes: a fixed scroll; an orbiting scroll opposed to the fixed scroll, the orbiting scroll orbiting with a plurality of compression chambers formed between the orbiting scroll and the fixed scroll; a drive shaft driving the orbiting scroll; and a backside plate provided between the drive shaft and the orbiting scroll, an alignment hole being provided in each of the orbiting scroll and the backside plate, and an alignment pin for alignment and a seal member for sealing the compression chambers being provided in the alignment holes. 1. A scroll fluid machine comprising:a fixed scroll;an orbiting scroll opposed to the fixed scroll, the orbiting scroll orbiting with a plurality of compression chambers formed between the orbiting scroll and the fixed scroll;a drive shaft driving the orbiting scroll; anda backside plate provided between the drive shaft and the orbiting scroll,wherein an alignment hole is provided in each of the orbiting scroll and the backside plate, and an alignment pin for alignment and a seal member for sealing the compression chambers are provided in the alignment holes.2. The scroll fluid machine according to claim 1 , whereinthe alignment holes are provided on an inner side than the drive shaft is.3. The scroll fluid machine according to claim 1 , whereinthe alignment pin has no screw groove or protrusion thereon.4. The scroll fluid machine according to claim 1 , whereinthe seal member includes a screw groove or a protrusion thereon.5. The scroll fluid machine according to claim 1 , whereinthe seal member has a larger diameter than the alignment pin.6. The scroll fluid machine according to claim 1 , whereina sealant is filled between the seal member and the alignment holes.7. The scroll fluid machine according to claim 1 , whereinthe seal member has a tapered end.8. The scroll fluid machine according to claim 1 , whereinthe alignment pin and the seal member are formed integrally.9. The scroll fluid machine ...

Подробнее
Номер записи: 97
01-05-2014 дата публикации

Scroll -Type Compressor

Номер: US20140119972A1
Автор: IGUCHI Masahiro, Iizuka Jiro, Ijiri Makoto, Kubota Masamichi, Oiwake Yuuji, Takahata Masaaki
Принадлежит:

A housing forms one portion of a compressor case and supports a bearing for a main shaft has an opening through which gas Is sucked; a suction space extending from the opening to inside of the compressor; a first gas passageway extending from the suction space in the direction of the axis of the main shaft; a second gas passageway connecting the first gas passageway and the space in which the main shaft bearing is disposed. A shell forms the other portion of the compressor case and is fastened to the housing has a third gas passageway connecting the first gas passageway and the internal space of a compression mechanism. The first gas passageway and the third gas passageway are connected to each other further on the outer side of the main shaft in the rotation radius direction than the movable region of the bottom plate of a movable scroll. 1. A scroll-type compressor comprising: a shell which forms the other portion of the compressor case and which is fastened to the housing having a third gas passageway communicating with the first gas passageway and an internal space of a compression mechanism, characterized in that', 'the first gas passageway and the third gas passageway communicate with each other at an outer side than a region where a bottom plate of a movable scroll can move with respect to a direction of a turning radius of the main shaft., 'a housing which forms one portion of a compressor case and which supports a bearing for a main shaft having an opening through which a gas to be compressed is sucked, a suction space extending with a cylindrical-shape from the opening into the compressor, a first gas passageway extending from the suction space along a rotation axis of the main shaft, and a second gas passageway communicating with the first gas passageway and a space in which the bearing is disposed; and'}2. The scroll-type compressor according to claim 1 , wherein the housing has a lubricating oil passageway which is independent from the first gas ...

Подробнее
Номер записи: 98
04-02-2021 дата публикации

COMPRESSOR AND REFRIGERATION CYCLE APPARATUS

Номер: US20210033311A1
Автор: KOUNO Yasuhiro, Okamoto Masakazu
Принадлежит:

A compressor includes a casing, compression mechanism disposed inside the casing, a discharge tube, a first temperature sensor, and a second temperature sensor. The compression mechanism compresses a sucked refrigerant, and discharges the compressed refrigerant to a refrigerant channel formed in an inner space of the casing. The compressed refrigerant flows from the inner space of the casing to an outside through the discharge tube. The first temperature sensor includes a temperature sensing portion disposed in the refrigerant channel, and directly measuring a temperature of the refrigerant. The second temperature sensor is disposed at a different position from the first temperature sensor. The second temperature sensor measures a temperature of one of a surface of the discharge tube, an inner space of the discharge tube, and a surface of the casing. 1. A compressor comprising:a casing; compressing a sucked refrigerant, and', 'discharging the compressed refrigerant to a refrigerant channel formed in an inner space of the casing;, 'a compression mechanism disposed inside the casing, the compression mechanism'}a discharge tube through which the compressed refrigerant flows from the inner space of the casing to an outside;a first temperature sensor including a temperature sensing portion disposed in the refrigerant channel, the temperature sensing portion directly measuring a temperature of the refrigerant; and a surface of the discharge tube,', 'an inner space of the discharge tube, and', 'a surface of the casing., 'a second temperature sensor disposed at a different position from the first temperature sensor, the second temperature sensor measuring a temperature of one of'}2. The compressor according to claim 1 , whereinthe second temperature sensor measures the temperature of the surface of the discharge tube.3. The compressor according to claim 1 , whereinthe first temperature sensor is disposed to penetrate the casing, and the first temperature sensor is ...

Подробнее
Номер записи: 99
11-02-2016 дата публикации

SCROLL COMPRESSOR

Номер: US20160040667A1
Автор: CHOI Yongkyu, KIM Cheolhwan, WON Inho
Принадлежит:

According to a scroll compressor associated with the present disclosure, the entire cross-sectional area of bypass holes formed at a compression chamber with a larger volume reduction gradient between the both compression chambers may be formed to be larger than that of bypass holes at the other compression chamber to prevent over-compression at the compression chamber with a larger volume reduction gradient, thereby enhancing the entire efficiency of the compressor. 1. A scroll compressor having both compression chambers with different volume reduction gradients , wherein the entire cross-sectional area of bypass holes formed at a compression chamber with a larger volume reduction gradient between the both compression chambers is formed to be larger than that of bypass holes at the other compression chamber.2. The scroll compressor of claim 1 , wherein the number of bypass holes formed at a compression chamber with a larger volume reduction gradient between the both compression chambers is formed to be greater than that of bypass holes formed at the other compression chamber.3. The scroll compressor of claim 1 , wherein the individual cross-sectional area of bypass holes formed at a compression chamber with a larger volume reduction gradient between the both compression chambers is formed to be larger than that of bypass holes formed at the other compression chamber.4. A scroll compressor claim 1 , comprising:a fixed scroll having a fixed wrap;a orbiting scroll tooth-coupled to the fixed wrap to have a orbiting wrap forming a first and a second compression chamber on an outer and an inner surface thereof, and a rotating shaft coupling portion is formed at a central portion thereof to perform orbiting movement with respect to the fixed scroll;a rotating shaft having an eccentric portion in which the eccentric portion is coupled to a rotating shaft coupling portion of the orbiting scroll to be overlapped with the orbiting wrap in a radial direction; anda driving unit ...

Подробнее
Номер записи: 100