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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

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Мониторинг СМИ

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

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 3536. Отображено 100.
12-04-2012 дата публикации

Jet pump and air conditioner

Номер: US20120085124A1
Автор: Tomohiro Maruyama, Toru Kawamata
Принадлежит: Individual

A jet pump includes a discharge outlet configured to discharge refrigerant in which relatively high pressure refrigerant and relatively low pressure refrigerant are mixed, a diffuser disposed coaxially with the discharge outlet in an upstream side of the discharge outlet, the diffuser including an inside diameter which gradually reduces in size away from the discharge outlet, a suction hole following from a minimum diameter portion of the diffuser in an upstream side of the minimum diameter portion, disposed coaxially with the discharge outlet, and to which the lower pressure refrigerant is guided, a high pressure refrigerant path configured to guide the high pressure refrigerant to the diffuser, and a nozzle portion configured to eject the high pressure refrigerant from the high pressure refrigerant path into the diffuser in a downstream side of the minimum diameter portion.

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Номер записи: 1
05-07-2012 дата публикации

Pressure spike reduction for refrigerant systems incorporating a microchannel heat exchanger

Номер: US20120167602A1
Автор: Alexander Lifson, Michael F. Taras
Принадлежит: Carrier Corp

A refrigerant system includes at least one compressor ( 54, 56 ) that compresses refrigerant and delivers it downstream to a heat rejection heat exchanger ( 26 ). The heat rejection heat exchanger is a microchannel heat exchanger. Refrigerant passes from the heat rejection heat exchanger downstream to an expansion device ( 60 ), from the expansion device through an evaporator ( 66 ), and from the evaporator back to the at least one compressor. A control ( 58 ) operates at least one compressor and the expansion device to reduce pressure spikes at transient conditions.

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Номер записи: 2
20-09-2012 дата публикации

High efficiency refrigeration system and cycle

Номер: US20120234026A1
Автор: Charles William Buckley, Gridhari L. Agrawal, JongSik Oh, Samuel T. Browning
Принадлежит: R&D Dynamics Corp

A high efficiency air conditioning and refrigeration system and cycle comprises a vapor compressor and two independent ejectors operatively connected to high and low-pressure sides of the compressor, respectively. The two ejectors reduce the overall pressure ratio of the mechanical vapor compressor resulting in dramatically increased thermodynamic cycle efficiency. As one example of its potential applications for residential, commercial or industrial uses, a 150 ton capacity of a water-cooled chiller designed in accordance with the present invention is predicted to provide the power consumption as low as 0.47 kW/ton, when operated in accordance with the cooling methods of the present invention, which corresponds to 7.47 of Coefficient of Performance (COP).

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Номер записи: 3
07-02-2013 дата публикации

Air conditioning apparatus for a vehicle

Номер: US20130031925A1
Автор: Toshiyuki Tanaka
Принадлежит: Toyota Motor Corp

Different kinds of air conditioning apparatus may be easily produced in accordance with specifications, even in a vehicle assembly factory rather than just an air conditioning apparatus production factory, and costs of transport and administration of air conditioning units, storage space in the vehicle assembly factory and suchlike may be reduced. The air conditioning apparatus includes an expansion valve ( 14 ) with a pressure adjustment screw and an air conditioning unit ( 16 ). A mounting space ( 84 ) to which the expansion valve ( 14 ) is mounted is provided at a unit case ( 85 ) of the air conditioning unit ( 16 ), and an opening portion ( 92 ) is formed in a wall portion ( 90 ) around the mounting space ( 84 ). The opening portion ( 92 ) is for insertion of a tool ( 106 ) that turns the pressure adjustment screw. A setting of pressure of the expansion valve ( 14 ) is carried out by the tool ( 106 ) being inserted through the opening portion ( 92 ) formed in the wall portion ( 90 ) around the mounting space ( 84 ) of the expansion valve ( 14 ) and turning the pressure adjustment screw of the expansion valve ( 14 ).

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Номер записи: 4
07-03-2013 дата публикации

Refrigerating circuit for use in a motor vehicle

Номер: US20130055752A1
Автор: Bastian Freese, Robert Fleischhacker, Thomas Tscheppe
Принадлежит: Dr Ing HCF Porsche AG

A refrigerating circuit for use in a motor vehicle has a refrigerant compressor ( 8 ) connected on the output side to a pressure line ( 4 ) and on the input side to a suction line ( 6 ). The refrigerating circuit has at least one condenser ( 10 ), at least one regulated expansion valve ( 14 ), at least one evaporator ( 16 ) and at least one inner heat exchanger ( 12 ). The regulated expansion valve ( 14 ) has a temperature t E in a detection zone ( 20 ) of the suction line ( 6 ) as a controlled variable. The detection zone ( 20 ) for the regulated expansion valve ( 14 ) is arranged at the output of the inner heat exchanger ( 12 ).

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Номер записи: 5
02-05-2013 дата публикации

Mass flow multiplier refrigeration cycle

Номер: US20130104593A1
Автор: Gasper C. Occhipinti
Принадлежит: Individual

The ejector mass flow multiplier refrigeration cycle utilizes a single-phase ejector which is operated at a high entrainment ratio and performs the function as a mass flow multiplier. The high-pressure motive force input into the single-phase ejector is provided by a vapor compressor which sucks a portion of the output mass flow from an evaporator with the remaining mass flow output from the evaporator being sucked into low-pressure port of the same single-phase ejector. The low-pressure output of the single-phase ejector is inputted into the low-pressure port of a two-phase ejector where the mass flow pressure is increased for the temperature conditions of a condenser. A high-pressure liquid pump provides the motive force input of the two-phase ejector and for the input to an evaporator where the cooling effect of the system takes place.

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Номер записи: 6
04-07-2013 дата публикации

Ejectors and Methods of Manufacture

Номер: US20130167566A1
Автор: Abbas A. Alahyari
Принадлежит: Carrier Corp

An ejector ( 200; 400; 600; 700; 800 ) has a housing ( 202 ) and an insert. The housing has an upstream end ( 206 ) and a downstream end ( 208 ) and a branch ( 220 ). A primary flowpath extends from the upstream end and a secondary flowpath passes through the branch to join the primary flowpath. The insert ( 204; 402 ) is within the housing and extends from an upstream end ( 250 ) to a downstream end ( 252 ). The insert has a motive nozzle ( 240 ) having an inlet and an outlet. A mixer ( 242 ) is at least partially downstream of the motive nozzle. One or more passages ( 304 ) are positioned such that the secondary flowpath extends through the branch and through the one or more passages to join the primary flowpath, at least one portion of the insert being of less robust material than a material of the housing.

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Номер записи: 7
04-01-2018 дата публикации

BATTERY COOLANT CIRCUIT CONTROL

Номер: US20180001784A1
Автор: Blatchley Timothy Noah, Porras Angel Fernando
Принадлежит:

A vehicle includes a refrigerant system having a chiller and a coolant system having a chiller loop and a radiator loop. The chiller loop is arranged to circulate coolant through the chiller, and the radiator loop is arranged to circulate coolant through a battery, a radiator, and a bypass valve connected to a bypass conduit. A controller is configured to, in response to an ambient-air temperature exceeding a battery-coolant temperature, actuate the valve to circulate coolant to the bypass conduit to skip the radiator. 1. A thermal-management system for a traction battery of a hybrid vehicle , the thermal-management system comprising:a refrigerant subsystem including a compressor, a condenser, a battery chiller, and an evaporator; a proportioning valve having first and second outlets, and an inlet connected in fluid communication with an outlet side of the traction battery via an outlet conduit,', 'a temperature sensor disposed on the outlet conduit and configured to output a signal indicative of a coolant temperature,', 'a chiller loop connected in fluid communication with the first outlet and arranged to convey coolant through the chiller to transfer heat from the coolant subsystem to the refrigerant subsystem, and', 'a radiator loop connected in fluid communication with the second outlet and arranged to convey coolant through the radiator to transfer heat from the coolant subsystem to outside air, the radiator loop having a bypass valve configured to route coolant around the radiator via a bypass line when the valve is actuated to a bypass position and configured to route coolant to the radiator when the valve is actuated to a radiator position; and, 'a coolant subsystem including'}a controller configured to, in response to the proportioning valve directing at least a portion of the coolant to the second outlet and the outside air temperature exceeding the coolant temperature, actuate the bypass valve to the bypass position.2. The thermal-management system of ...

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Номер записи: 8
05-01-2017 дата публикации

ELECTRONIC EXPANSION VALVE

Номер: US20170002931A1
Автор: Shu Xiaohui, Wang Qiliang, Zhan Caiyi
Принадлежит:

An electronic expansion valve includes an electromagnetic coil, a valve body provided with a valve port, and a valve needle. The valve needle includes a main body section and a first conical surface portion arranged adjacent to the main body section. The valve port includes a straight section portion having equal diameters. When the electromagnetic coil applies a zero pulse, the straight section portion is not in contact with the valve needle, and an intersecting surface of a plane, where a top end of the straight section portion is located, and the valve needle is on the first conical surface portion. With the electronic expansion valve, flow can be precisely adjusted at a low-pulse stage, and during assembly, a position of the 0 pulse can be directly obtained by adjusting relative positions of the valve needle and the valve port and by using a flow meter. 1. An electronic expansion valve , comprising:an electromagnetic coil configured to apply a pulse to allow the electronic expansion valve operate in response to the pulse;a valve body provided with a valve port; anda valve needle configured to cooperate with the valve port to adjust a flow of the electronic expansion valve; the valve needle comprises a main body section and a first conical surface portion which is arranged adjacent to the main body section, the valve port comprises a straight section portion having equal diameters; and', 'when the electromagnetic coil applies a zero pulse, the straight section portion is not in contact with the valve needle, and an intersecting surface of a plane, where a top end of the straight section portion is located, and the valve needle is on the first conical surface portion., 'wherein,'}2. The electronic expansion valve according to claim 1 , wherein the valve port further comprises a first valve port conical surface and a second valve port conical surface claim 1 , which are arranged at two ends of the straight section portion respectively claim 1 , extend in a ...

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Номер записи: 9
05-01-2017 дата публикации

Packaged terminal air conditioner unit

Номер: US20170003040A1
Автор: Brent Alden Junge, Gunaranjan Chaudhry, Michael John Kempiak
Принадлежит: Haier US Appliance Solutions Inc

A packaged terminal air conditioner unit includes a casing. A compressor, a reversing valve and an ejector of the packaged terminal air conditioner unit are positioned within the casing. The ejector is configured for drawing vapor refrigerant into a flow of liquid refrigerant. An exterior heat exchanger and an interior heat exchanger are also positioned within the casing. The interior heat exchanger has a first stage and a second stage.

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Номер записи: 10
07-01-2016 дата публикации

Oil management for heating ventilation and air conditioning system

Номер: US20160003511A1
Автор: Jack Leon Esformes, Marcel CHRISTIANS, Satyam Bendapudi
Принадлежит: Carrier Corp

A method of lubricant management in a heating ventilation and air conditioning (HVAC) system includes flowing a volume of a compressor lubricant and refrigerant mixture from an evaporator into a lubricant still and stopping the flow of the compressor lubricant and refrigerant mixture into the lubricant still when the mixture fills the lubricant still to a selected level. Compressor lubricant is distilled from the mixture via a thermal energy exchange, and the distillation is stopped when a concentration of compressor lubricant in the lubricant still exceeds a predetermined concentration level. The distillate is urged from the lubricant still.

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Номер записи: 11
04-01-2018 дата публикации

BULB FOR A THERMOSTATIC EXPANSION VALVE, SET COMPRISING A BULB AND AT LEAST A PART OF A THERMOSTATIC EXPANSION VALVE CONNECTED TO A CAPILLARY AND METHOD FOR CONNECTING A BULB AND A CAPILLARY OF A THERMOSTATIC EXPANSION VALVE

Номер: US20180003420A1
Автор: Rasmussen Jens Erik
Принадлежит:

A bulb () for a thermostatic expansion valve is provided, said bulb () comprising a chamber (), said chamber () being located within a metallic casing of said bulb and being filled with a filling adapted to influence a valve element of said thermostatic expansion valve. Service of a temperature controlled valve connected to a bulb should be facilitated. To this end said bulb () comprises a connection geometry () adapted to be connected to a capillary member () and said casing being provided with a closed opening zone located within said connection geometry (), said opening zone being adapted to be opened upon mounting a counterpart () to said connection geometry (). 1. A bulb for a thermostatic expansion valve , said bulb comprising a chamber , said chamber being located within a metallic casing of said bulb and being filled with a filling , adapted to influence a valve element of said thermostatic expansion valve , wherein said bulb comprises a connection geometry adapted to be connected to a capillary member and said casing being provided with a closed opening zone located within said connection geometry , said opening zone being adapted to be opened upon mounting a counterpart to said connection geometry.2. The bulb according to claim 1 , wherein said opening zone comprises an opening closed by a closing member held in said opening claim 1 , in particular by a press-fit.3. The bulb according to claim 1 , wherein said opening has an area adapted to a size of said closing member allowing said closing member to be pushed into said chamber.4. The bulb according to claim 1 , wherein said opening is positioned centrally with respect to said connection geometry.5. The bulb according to claim 1 , wherein said opening zone is adapted to be perforated by a part of said counterpart.6. A set comprising a bulb according to and at least part of a thermostatic expansion valve connected to a capillary claim 1 , said capillary having at one end a counterpart to said connection ...

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Номер записи: 12
02-01-2020 дата публикации

Climate-Control System Having Vapor-Injection Compressors

Номер: US20200003457A1
Автор: BEISNER Russ M., WALLIS FRANK S., Warner Wayne R.
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A climate-control system includes a first compressor and a second compressor. The first compressor includes a first inlet and a first outlet. The second compressor is in fluid communication with the first compressor and includes second and third inlets, a second compression mechanism and a second outlet. The second and third inlets are fluidly coupled to the second compression mechanism. The second compression mechanism receives working fluid from the first compressor through the third inlet and discharges working fluid through the second outlet of the second compressor. 1. A climate-control system comprising:a first compressor having a first inlet and a first outlet;a second compressor in fluid communication with the first compressor and having second and third inlets, a second compression mechanism and a second outlet, the second and third inlets fluidly coupled to the second compression mechanism, the second compression mechanism receiving working fluid from the first compressor through the third inlet and discharging working fluid through the second outlet of the second compressor.2. The climate-control system of claim 1 , wherein a first heat exchanger is in fluid communication with the second compressor and receives working fluid from the second compressor.3. The climate-control system of claim 2 , wherein a second heat exchanger is in fluid communication with the first heat exchanger and includes a fourth inlet and third and fourth outlets claim 2 , the fourth inlet receives working fluid from the first heat exchanger claim 2 , the third outlet provides working fluid to the first inlet.4. The climate-control system of claim 3 , wherein a first expansion device is disposed between the first heat exchanger and the second heat exchanger.5. The climate-control system of claim 4 , wherein the fourth outlet of the second heat exchanger provides working fluid to the second inlet of the second compressor.6. The climate-control system of claim 5 , further comprising a ...

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Номер записи: 13
07-01-2021 дата публикации

COOLING SYSTEM

Номер: US20210003331A1
Автор: Hollister Michael, Zha Shitong
Принадлежит:

An apparatus includes a flash tank that stores a refrigerant, a first load that uses the refrigerant to cool a first space, second and third loads, first and second compressors, and a valve. During a first mode of operation: the second load uses the refrigerant to cool a second space, the third load uses the refrigerant to cool a third space, the second compressor compresses the refrigerant from the second and third loads, and the first compressor compresses the refrigerant from the first load and the second compressor. During a second mode of operation: the second compressor compresses the refrigerant from the second load and directs the compressed refrigerant to the third load to defrost the third load and the valve prevents the refrigerant at the third load from flowing to the flash tank until a pressure of the refrigerant at the third load exceeds a threshold. 1. An apparatus comprising:a high side heat exchanger configured to remove heat from a refrigerant;a flash tank configured to store the refrigerant;a first load configured to use the refrigerant from the flash tank to cool a first space proximate the first load;a second load;a third load;a first compressor;a second compressor; anda valve, the second load is configured to use the refrigerant from the flash tank to cool a second space proximate the second load;', 'the third load is configured to use the refrigerant from the flash tank to cool a third space proximate the third load;', 'the second compressor configured to compress the refrigerant from the second load and the third load; and', 'the first compressor configured to compress the refrigerant from the first load and the second compressor, and, 'during a first mode of operation the second compressor configured to compress the refrigerant from the second load and to direct the compressed refrigerant to the third load to defrost the third load; and', 'the valve configured to prevent the refrigerant at the third load from flowing to the flash tank until ...

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Номер записи: 14
03-01-2019 дата публикации

EXPANSION VALVE

Номер: US20190003546A1
Автор: TOMIZAWA Naoki, YAMAZAKI Shogo, Yokota Hiroshi
Принадлежит:

An expansion valve includes a valve main body having a valve chamber therein, a valve body arranged within the valve chamber, a valve body support member supporting the valve body, an urging member urging the valve body toward a valve seat, an actuating bar pressing the valve body in an opening direction of the valve against urging force generated by the urging member, and a vibration proof spring suppressing vibration of the valve body or the actuating bar. The actuating bar has an outer peripheral surface of which a part constitutes a contact surface slidably contacting with the vibration proof spring, and the contact surface has a shape by which the amount of deformation of the vibration proof spring becomes greater as the valve body goes towards a closing direction of the valve. 1. An expansion valve comprising:a valve main body provided with a valve chamber therein;a valve body arranged within the valve chamber;a valve body support member supporting the valve body;an urging member urging the valve body toward a valve seat;an actuating bar being contact with the valve body and pressing the valve body in an opening direction the valve against urging force generated by the urging member; anda vibration proof spring suppressing a vibration of the valve body and/or the actuating bar,wherein the actuating bar has an outer peripheral surface of which a part constitutes a contact surface slidably contacting with the vibration proof spring, and the contact surface has a shape by which the amount of deformation of the vibration proof spring becomes greater as the valve body goes towards a closing direction of the valve.2. The expansion valve according to claim 1 , wherein the vibration proof spring comprises a ring spring claim 1 , andwherein the ring spring comprises:a ring portion; andan elastic protruding portion inwardly protruding from the ring portion and contacting with the outer peripheral surface of the actuating bar.3. The expansion valve according to claim 1 , ...

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Номер записи: 15
12-01-2017 дата публикации

Valve Device and Air Conditioning System

Номер: US20170008370A1
Автор: Hiraoka Ken
Принадлежит: CATERPILLAR SARL

A plurality of coolant piping lines are connected via valve, body flange members, which include respective recesses which are notched toward respective piping line insertion holes into which respective coolant piping lines are inserted, projections which are projected from respective recesses, and screw insertion holes which are arranged on a respective projection or recess, recesses and projections being combined with one other to make continuous screw insertion holes into which a fixing screw is inserted to fix the flange members. 1. A valve device allowing a plurality of pipes to be assembled to one pipe connection surface of a valve main body via a plurality of flange members , the valve device comprising: a first pipe insertion hole into which a first pipe is inserted;', 'a first recess portion formed like a cutout toward the first pipe insertion hole along a surface intersecting an axial direction of the first pipe insertion hole;', 'a first protruding portion formed so as to protrude from the first recess portion in a direction away from the first pipe insertion hole along a surface intersecting the axial direction of the first pipe insertion hole; and', 'a first screw insertion hole formed in the first protruding portion;, 'a first flange member including a second pipe insertion hole into which a second pipe is inserted;', 'a second recess portion formed like a cutout toward the second pipe insertion hole along a surface intersecting an axial direction of the second pipe insertion hole;', 'a second protruding portion formed so as to protrude from the second recess portion in a direction away from the second pipe insertion hole along a surface intersecting the axial direction of the second pipe insertion hole; and', 'a second screw insertion hole that is formed at a position in the second protruding portion and is contiguous with the first screw insertion hole in a fitted state where the first recess portion and the second protruding portion are fitted ...

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Номер записи: 16
12-01-2017 дата публикации

HEAT RECOVERY VARIABLE-FREQUENCY MULTI-SPLIT HEAT PUMP SYSTEM AND CONTROL METHOD THEREOF

Номер: US20170010027A1
Автор: CAO Rui, LI Yajun, Li Yongmei, Liu Min, Wang Yuanpeng, Zhang Wenqiang
Принадлежит:

A heat recovery variable-frequency multi-split heat pump system and a control method thereof. The system comprises an outdoor unit and at least two indoor units. The system is a three-pipe heating recovery multi-split heat pump system designed on the basis of a four-way reversing valve, and one indoor unit thereof is provided with two electronic expansion valves and two heat exchangers so that any indoor unit in the system can operate independently under three working conditions of refrigeration, heating or heat recovery dehumidification. Under multi-split condition, the system can operate under six working conditions, namely, the full-refrigeration working condition, the full-heating working condition, the common-heat-recovery working condition, the common-heat-recovery-dehumidification working condition, the heat recovery dehumidification-refrigeration-combination working condition and the heat recovery dehumidification-heating-combination working condition. Under the heat recovery dehumidification condition, a lower outlet air temperature, during low-temperature dehumidification, is raised by means of heat removal of a condenser so as to achieve the purpose of dehumidification without temperature fall or temperature rise, so that the thermal comfort and efficiency of the system are improved, and the refrigerating capacity and heating capacity of the system are effectively improved. 1. A heat recovery variable-frequency multi-connected heat pump system , comprising an outdoor unit and at least two indoor units , wherein the outdoor unit and the indoor units are connected through a high-pressure liquid pipe , a high-pressure gas pipe , and a low-pressure gas return pipe , wherein:{'b': 4', '5', '6', '10', '11', '1, 'the outdoor unit comprises a four-way valve (), an outdoor heat exchanger (), an outdoor electronic expansion valve (), a second electromagnetic valve (), a third electromagnetic valve (), and at least one compressor ();'}{'b': 1', '4', '4', '5', '5', ' ...

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Номер записи: 17
11-01-2018 дата публикации

Refrigeration System with Separate Feedstreams to Multiple Evaporator Zones

Номер: US20180010830A1
Автор: Scherer John
Принадлежит:

A refrigeration system has: (a) a fluid tight circulation loop including a compressor, a condenser and an evaporator, the evaporator having at least three evaporator zones, each evaporator zone having an inlet port, the circulation loop being further configured to measure the condition of the refrigerant with a refrigerant condition sensor disposed within the evaporator upstream of the evaporator outlet port; and control the flow of refrigerant to the evaporator based upon the measured condition of the refrigerant within the evaporator, and (b) a controller for controlling the flow rate of refrigerant to the evaporator based upon the measured condition of the refrigerant within the evaporator upstream of the evaporator outlet port. 1. A method of controlling a refrigeration system , wherein the refrigeration system comprises a refrigerant disposed within a fluid-tight circulation loop including a compressor , a condenser and an evaporator , the refrigerant being capable of existing in a liquefied state , a gaseous state and a two-phase state comprising both refrigerant in the liquefied state and refrigerant in the gaseous state , the evaporator having an outlet port and multiple evaporator zones in series , each evaporator zone having an evaporator zone inlet port , the method comprising the steps of:(a) compressing refrigerant in a gaseous state within the compressor and cooling the refrigerant within the condenser to yield refrigerant in the liquefied state;(b) flowing refrigerant from the condenser into the evaporator via the inlet ports of each evaporator zone, wherein the refrigerant partially exists in a two-phase state; and(c) flowing refrigerant from the evaporator to the compressor.2. The method of wherein the multiple zones in the evaporator are provided by a continuous length of tubing.3. The method of wherein the continuous length of tubing continually and smoothly expands from the inlet port of the most upstream evaporator zone to the outlet port of the ...

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Номер записи: 18
11-01-2018 дата публикации

VALVE AND CAPILLARY TUBE SYSTEM FOR REFRIGERATION SYSTEMS

Номер: US20180010831A1
Автор: Bates Roy, Swofford Timothy D.
Принадлежит: Hill Phoenix, Inc.

A refrigeration system includes an evaporator, a condenser, a compressor, a capillary tube, and an expansion device. The compressor is configured to circulate a refrigerant between the evaporator and the condenser. The capillary tube is configured to receive the refrigerant from the condenser. The expansion device is configured to receive the refrigerant from the capillary tube and provide the refrigerant to the evaporator. The expansion device is adjustable to control a flow of the refrigerant through the capillary tube. 1. A refrigeration system , comprising:an evaporator;a condenser;a compressor configured to circulate a refrigerant between the evaporator and the condenser;a capillary tube configured to receive the refrigerant from the condenser; andan expansion device configured to receive the refrigerant from the capillary tube and provide the refrigerant to the evaporator, wherein the expansion device is adjustable to control a flow of the refrigerant through the capillary tube.2. The refrigeration system of claim 1 , wherein:the capillary tube is configured to cause a fixed decrease in a measurable thermodynamic property of the refrigerant as a result of a physical geometry of the capillary tube; andthe expansion device is adjustable to cause a variable decrease in the measureable thermodynamic property of the refrigerant to accommodate varying refrigeration loads.3. The refrigeration system of claim 2 , wherein the measurable thermodynamic property comprises at least one of temperature claim 2 , pressure claim 2 , or enthalpy.4. The refrigeration system of claim 2 , further comprising a controller configured to modulate a position of the expansion device to adjust the variable decrease in the measureable thermodynamic property caused by the expansion device.5. The refrigeration system of claim 1 , further comprising:a sensor configured to measure a temperature of the refrigerant at an outlet of the evaporator; anda controller configured to modulate a ...

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Номер записи: 19
10-01-2019 дата публикации

AIR CONDITIONING DEVICE USING VAPOR INJECTION CYCLE AND METHOD FOR CONTROLLING THE DEVICE

Номер: US20190011159A1
Автор: JEONG Ho Jong, KANG Soojin, LEE Kang Wook, PARK Hansaem
Принадлежит: LG ELECTRONICS INC.

An air conditioning device includes a vapor injection cycle in which an operating speed of a compressor is adjusted to improve efficiency, and a method for controlling the device. The air conditioning device includes an inner heat-exchanger for exchanging heat between a first portion of refrigerant passing through a condenser and a second portion of the refrigerant branched from the first refrigerant, and an injection channel through which the second portion of the refrigerant is injected into the compressor. The inner heat exchanger includes an outer tube and an inner tube disposed inside the outer tube. The first portion of the refrigerant flows into the inner tube, while the second portion of the refrigerant flows into the outer tube. Thus, when a variation of air-conditioning load is small and an injection super-heating temperature is low, the device enables reduction of the compressor rotation speed to ensure high injection super-heating temperature. 1. An air conditioning device for use in performing a refrigeration cycle , the device comprising:a compressor for compressing refrigerant;a condenser for condensing the refrigerant from the compressor;an inner heat-exchanger for exchanging heat between a first portion of the refrigerant passing through the condenser and a second portion of the refrigerant branched from the first portion of the refrigerant;an injection channel through which the second portion of the refrigerant is injected into the compressor;a main expansion valve for regulating flow of the first portion of the refrigerant coming from the inner heat-exchanger; and wherein the inner heat exchanger includes an outer tube and a plurality of inner tubes disposed inside the outer tube, and', 'wherein the first portion of the refrigerant flows into the inner tubes, while the second portion of the refrigerant flows between the outer tube and the inner tubes., 'an injection expansion valve for controlling flow of the second portion of the refrigerant ...

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Номер записи: 20
14-01-2021 дата публикации

CONTROL SYSTEM FOR HVAC UNIT

Номер: US20210010732A1
Автор: Crane Curtis Christian, Lindberg Gail Elaine, Uribe Carlos Jose
Принадлежит:

A heating, ventilating, and air conditioning (HVAC) system that includes a vapor compression system having a refrigerant, a compressor of the vapor compression system configured to circulate the refrigerant through the vapor compression system, an expansion device of the vapor compression system configured to adjust a flow of the refrigerant through the vapor compression system, and a controller configured to adjust a position of the expansion device based on a measured amount of superheat of the refrigerant entering the compressor, a measured discharge temperature of the refrigerant leaving the compressor, or a combination thereof, such that the measured amount of superheat of the refrigerant entering the compressor reaches a target amount of superheat, the measured discharge temperature of the refrigerant leaving the compressor reaches a target discharge temperature, or a combination thereof. 1. A heating , ventilating , and air conditioning (HVAC) system , comprising:a vapor compression system comprising a refrigerant;a compressor of the vapor compression system configured to circulate the refrigerant through the vapor compression system;an expansion device of the vapor compression system configured to adjust a flow of the refrigerant through the vapor compression system; anda controller configured to adjust a position of the expansion device based on a measured amount of superheat of the refrigerant entering the compressor, a measured discharge temperature of the refrigerant leaving the compressor, or a combination thereof, such that the measured amount of superheat of the refrigerant entering the compressor achieves a target amount of superheat, the measured discharge temperature of the refrigerant leaving the compressor achieves a target discharge temperature, or a combination thereof.2. The HVAC system of claim 1 , wherein the controller comprises a first control module and a second control module claim 1 , wherein the first control module comprises adjusting ...

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Номер записи: 21
14-01-2021 дата публикации

Air conditioning system and control method therefor

Номер: US20210010733A1
Автор: Junqi DONG, Qiaofeng Liu, Shiwei JIA
Принадлежит: Hangzhou Sanhua Research Institute Co Ltd

The present application discloses an air conditioning system and a control method therefore. An intermediate heat exchanger can include a first heat exchange portion and a second heat exchange portion, a first end of the first heat exchange portion is in communication with an inlet of a compressor, a second end of the first heat exchange portion is communicable with an outlet of a second heat exchanger and/or a second end of the first heat exchanger, a first end of the second heat exchange portion is communicable with a first end of the first heat exchanger, and a second end of the second heat exchange portion is communicable with an inlet of the second heat exchanger and/or an outlet of the compressor. In the refrigeration mode, the first branch can have an adjustable amount of flow. Performance of the air conditioning system can be enhanced.

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Номер записи: 22
15-01-2015 дата публикации

Expansion valve

Номер: US20150013368A1
Автор: Hiroshi Oshitani, Ryu Fukushima, Shigeji Ohishi, Syuichi Mizuno, Teruyuki Hotta
Принадлежит: Denso Corp

A temperature sensitive rod is communicated with a diaphragm that is displaceable in response to a pressure difference between an internal pressure of a sealed space, in which a temperature sensitive medium is sealed, and a pressure of a low pressure refrigerant outputted from an evaporator. A blind hole, which opens to the sealed space, is formed in an inside of the temperature sensitive rod. The temperature sensitive medium is a mixture gas of the refrigerant and an inert gas. A mixing ratio of the inert gas in the temperature sensitive medium corresponds to a ratio of an equivalent diameter of the blind hole relative to a depth of the blind hole in such a manner that a time constant of heat conduction from the temperature sensitive rod to the temperature sensitive medium is kept within a desired time constant range.

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Номер записи: 23
09-01-2020 дата публикации

APPARATUS AND METHOD FOR DIAGNOSING VALVE FAILURE OF REFRIGERATOR

Номер: US20200011596A1
Автор: KOO Kwan Seo, Lee Seunghoon
Принадлежит:

An apparatus is for diagnosing a valve failure of a refrigerator by detecting whether or not a first valve configured to control flow of a refrigerant circulating in a first refrigeration compartment and a second valve configured to control flow of a refrigerant circulating in a second refrigeration compartment are abnormal. The apparatus includes a first temperature sensor measuring a temperature in the first refrigeration compartment, a second temperature sensor measuring a temperature in the second refrigeration compartment, and a controller configured to determine whether or not the first valve and the second valve are abnormal by comparing changes in temperatures measured by the first temperature sensor and the second temperature sensor in a state where the first valve or the second valve is opened. The apparatus further includes a display configured to display the determination result indicating whether or not the first valve and the second valve are abnormal. 1. An apparatus for diagnosing a valve failure of a refrigerator by detecting whether or not a first valve configured to control flow of a refrigerant circulating in a first refrigeration compartment and a second valve configured to control flow of a refrigerant circulating in a second refrigeration compartment are abnormal , the apparatus comprising:a first temperature sensor configured to measure a temperature in the first refrigeration compartment;a second temperature sensor configured to measure a temperature in the second refrigeration compartment;a controller configured to determine whether or not the first valve and the second valve are abnormal by comparing changes in temperatures measured by the first temperature sensor and the second temperature sensor in a state where the first valve or the second valve is opened; anda display configured to display a determination result of the controller, the determination result indicating whether or not the first valve and the second valve are abnormal.2. ...

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Номер записи: 24
19-01-2017 дата публикации

Refrigeration System Including Evaporators Associated in Parallel

Номер: US20170016652A1
Автор: Thiessen Marcio Roberto
Принадлежит:

The present invention belongs to the technological field of refrigeration systems and, more particularly refrigeration systems used in residential applications, for example, refrigeration appliances including at least two climate chambers at different temperatures. Problem to be solved: Conventionally, existing Refrigeration systems including evaporators connected in parallel require complex compressors including at least two suction paths, or alternatively functional complex arrangements unable to maintain independence between the individual evaporators. Troubleshooting: Disclosed is a refrigeration system including evaporators connected in parallel where each of said evaporators operates through a separate feeding principle, and that this aspect makes it possible, with the aid of a liquid accumulator and phase separator, maintaining the independence between the individual evaporators, besides the use of a compressor. 1. Refrigeration system including at least two evaporators associated in parallel , where:said evaporators connected in parallel operate in different pressure and temperature ranges;said refrigeration system comprising at least two evaporators connected in parallel further comprising:at least one compressor, at least a condenser, at least a switching device at least a first expansion device, at least a second expansion device, and at least one fluid accumulator;the outflow of the compressor being fluidly connected to the inlet path from the condenser; the condenser outflow being fluidly connected to the switching device inlet path; the switching device outflow being fluidly connected to the first expansion device;the switching device outflow is fluidly connected to the second expansion device;said liquid accumulator comprising at least one lower inlet path immersed in the liquid, at least one upper inlet path, and at least one upper outflow;said refrigeration system comprising at least two evaporators connected in parallel being particularly ...

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Номер записи: 25
16-01-2020 дата публикации

AIR CONDITIONER

Номер: US20200018530A1
Автор: ADACHI Yusuke, HAYAMARU Yasuhide, NAKAJIMA Komei, SATO Masakazu, Tashiro Yusuke
Принадлежит:

An air conditioner includes a refrigerant circuit and refrigerant. The refrigerant circuit has a compressor, a condenser, a pressure-regulating valve, and an evaporator. The refrigerant is R32. The pressure-regulating valve includes a flow path causing the refrigerant flowing from the condenser to flow to the evaporator, a pressure reference chamber partitioned from the flow path and filled with inert gas, and a valve portion. The pressure-regulating valve is configured to adjust a degree of opening of the valve portion to adjust a flow rate of the refrigerant flowing through the flow path. The valve portion is configured to increase the degree of opening when a pressure in the flow path is higher than a pressure in the pressure reference chamber, and reduce the degree of opening when the pressure in the flow path is lower than the pressure in the pressure reference chamber. 1. An air conditioner comprising:a refrigerant circuit comprising a compressor, a condenser, a pressure-regulating valve, and an evaporator; andrefrigerant flowing through the refrigerant circuit in an order of the compressor, the condenser, the pressure-regulating valve, and the evaporator, whereinthe refrigerant is R32, a case,', 'a diaphragm attached to an inner side of the case to partition an interior of the case,', 'a flow path provided by partitioning the interior of the case by the diaphragm, the flow path causing the refrigerant flowing from the condenser to flow to the evaporator,', 'a pressure reference chamber partitioned from the flow path by the diaphragm and filled with inert gas,', 'a valve portion disposed in the flow path, and', 'a partition member disposed in the flow path,, 'the pressure-regulating valve comprises'}the pressure-regulating valve is configured to adjust a degree of opening of the valve portion to adjust a flow rate of the refrigerant flowing through the flow path, and increase the degree of opening when a pressure in the flow path is higher than a pressure in ...

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Номер записи: 26
25-01-2018 дата публикации

EJECTOR REFRIGERATION CYCLE

Номер: US20180023847A1
Автор: NAGANO Youhei, Nishijima Haruyuki, YOKOYAMA Yoshiyuki
Принадлежит:

An ejector refrigeration cycle has a compressor, a radiator, an ejector, a swirl flow generator, an evaporator, and an oil separator. The compressor compresses refrigerant, mixed with refrigerant oil compatible with a liquid-phase refrigerant, and discharges the high-pressure refrigerant. The ejector has a nozzle and a body having a refrigerant suction port and a pressure increasing part. The swirl flow generator is configured to cause a decompression boiling in the refrigerant by causing the refrigerant to swirl about a center axis of the nozzle. The oil separator separates the refrigerant oil from the high-pressure refrigerant compressed by the compressor and guides the refrigerant oil to flow to a suction side of the compressor. The oil separator decreases a concentration of the refrigerant oil in the refrigerant, which is to flow into the swirl flow generator, so as to promote the decompression boiling of the refrigerant in the swirl flow generator. 1. An ejector refrigeration cycle comprising:a compressor that compresses refrigerant, mixed with refrigerant oil, to be a high-pressure refrigerant and discharges the high-pressure refrigerant, the refrigerant oil being compatible with a liquid-phase refrigerant;a radiator that causes a high-pressure refrigerant discharged by the compressor to radiate heat to be a subcooled liquid-phase refrigerant; a nozzle that decompresses the refrigerant flowing from the radiator and injects the refrigerant as an injection refrigerant at a high speed and', 'a body that has a refrigerant suction port and a pressure increasing part, the refrigerant suction port that draws the refrigerant, as a suction refrigerant, using suction power of the injection refrigerant, the pressure increasing part that mixes the injection refrigerant and the suction refrigerant and increases a pressure of a mixture of the injection refrigerant and the suction refrigerant;, 'an ejector having'}a swirl flow generator that is configured to cause the ...

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Номер записи: 27
25-01-2018 дата публикации

PACKAGED TERMINAL AIR CONDITIONER UNIT

Номер: US20180023850A1
Автор: Chaudhry Gunaranjan, JUNGE Brent Alden
Принадлежит:

A packaged terminal air conditioner unit is provided. The packaged terminal air conditioner unit includes a casing. A compressor, an interior coil, an exterior coil and a reversing valve are positioned within the casing. The reversing valve is configured for selectively reversing a flow direction of compressed refrigerant from the compressor. The packaged terminal air conditioner also includes at least one ejector for combining a stream of refrigerant from a primary loop with a stream of refrigerant from an auxiliary cooling loop, thereby improving system efficiency. 1. A packaged terminal air conditioner unit , comprising:a casing extending between an exterior side portion and an interior side portion;a compressor positioned within the casing, the compressor operable to compress a refrigerant;an exterior coil positioned within the casing at the exterior side portion of the casing;a primary interior coil positioned within the casing at the interior side portion of the casing;a secondary interior coil positioned within the casing at the interior side portion of the casing;a reversing valve positioned within the casing, the reversing valve being in fluid communication with the compressor in order to receive compressed refrigerant from the compressor and selectively direct the compressed refrigerant from the compressor;an ejector configured for combining two or more streams of refrigerant;a primary loop having a first portion extending between the reversing valve and the exterior coil, a second portion extending between the exterior coil and the ejector, a third portion extending between the ejector and the primary interior coil, and a fourth portion extending between the primary interior coil and the reversing valve; andan auxiliary loop conduit having a first portion extending between the third portion of the primary loop and the secondary interior coil, a second portion extending between the secondary interior coil and the second portion of the primary loop, and a ...

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Номер записи: 28
25-01-2018 дата публикации

CALORIC HEAT PUMP SYSTEM

Номер: US20180023854A1
Автор: Beers David G., Benedict Michael Alexander, Schroeder Michael Goodman
Принадлежит:

A caloric heat pump system includes a plurality of stages, a plurality of conduits and a plurality of flow restrictors. Each stage includes a caloric material disposed within a respective chamber of a plurality of chambers. Each conduit is coupled to a regenerator housing at a respective one of the plurality of chambers. Each flow restrictor is coupled to the regenerator housing or a respective one of the plurality of conduits. A related method for regulating fluid flow through a plurality of stages of a caloric heat pump is also provided. 1. A caloric heat pump system , comprising:a regenerator housing comprising a plurality of chambers;a plurality of stages, each stage comprising a caloric material disposed within a respective chamber of the plurality of chambers;a plurality of conduits, each conduit coupled to the regenerator housing at a respective one of the plurality of chambers;a pump coupled to the conduits of the plurality of conduits, the pump operable to circulate a working fluid through the conduits of the plurality of conduits and the stages of the plurality of stages; anda plurality of flow restrictors, each flow restrictor coupled to the regenerator housing or a respective one of the plurality of conduits, the flow restrictors of the plurality of flow restrictors configured such that a flow rate of the working fluid through each stage of the plurality of stages is uniform.2. The caloric heat pump system of claim 1 , wherein the flow restrictors of the plurality of flow restrictors comprise at least one of an orifice claim 1 , a needle valve or a pinch valve.3. The caloric heat pump system of claim 1 , wherein the flow restrictors of the plurality of flow restrictors are orifices and are positioned on the regenerator housing.4. The caloric heat pump system of claim 1 , wherein the flow restrictors of the plurality of flow restrictors are needle valves or pinch valves and each flow restrictor is coupled to the respective one of the plurality of conduits ...

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Номер записи: 29
24-01-2019 дата публикации

Single-circuit refrigerator

Номер: US20190024956A1
Автор: Andreas Babucke, Niels Liengaard
Принадлежит: BSH HAUSGERAETE GMBH

A single-circuit refrigerator includes a refrigerant circuit in which the following are connected in series one after another between a pressure port and an intake port of a compressor: a condenser, a first throttle section, a first evaporator for cooling a first temperature zone of the single-circuit refrigerator, a second throttle section, a second evaporator for cooling a second temperature zone of the single circuit refrigerator, and an intake line. A downstream section of the intake line is connected with the first throttle section to form a first heat exchanger, and an upstream section of the intake line is connected with the second throttle section to form a second heat exchanger.

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Номер записи: 30
28-01-2021 дата публикации

DEHUMIDIFIER WITH MULTI-CIRCUITED EVAPORATOR AND SECONDARY CONDENSER COILS

Номер: US20210025604A1
Автор: "OBrien Timothy S.", DeMonte Todd R., Lorang Grant M., Sloan Scott E., Yu Weizhong
Принадлежит:

A dehumidification system includes a compressor, a primary evaporator, a primary condenser, a secondary evaporator, and a secondary condenser. The secondary evaporator receives an inlet airflow and outputs a first airflow to the primary evaporator. The primary evaporator receives the first airflow and outputs a second airflow to the secondary condenser. The secondary condenser receives the second airflow and outputs a third airflow to the primary condenser. The primary condenser receives the third airflow and outputs a dehumidified airflow. The compressor receives a flow of refrigerant from the primary evaporator and provides the flow of refrigerant to the primary condenser. 1. A dehumidification system , comprising: receive a flow of refrigerant; and', 'receive an inlet airflow and output a first airflow, the first airflow comprising cooler air than the inlet airflow, the first airflow generated by transferring heat from the inlet airflow to the flow of refrigerant as the inlet airflow passes through the secondary evaporator;, 'a secondary evaporator operable to receive a portion of the flow of refrigerant; and', 'receive the first airflow and output a second airflow, the second airflow comprising cooler air than the first airflow, the second airflow generated by transferring heat from the first airflow to the flow of refrigerant as the first airflow passes through the primary evaporator;, 'a primary evaporator operable to receive the flow of refrigerant from the secondary evaporator; and', 'receive the second airflow and output a third airflow, the third airflow comprising warmer air with a lower relative humidity than the second airflow, the third airflow generated by transferring heat from the flow of refrigerant to the third airflow as the second airflow passes through the secondary condenser;, 'a secondary condenser operable to receive the flow of refrigerant; and', 'receive the third airflow and output a dehumidified airflow, the dehumidified airflow ...

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Номер записи: 31
28-01-2021 дата публикации

EJECTOR-BASED CRYOGENIC REFRIGERATION SYSTEM FOR COLD ENERGY RECOVERY

Номер: US20210025624A1
Автор: CHENG YIWEI, Li Cui, LI YANZHONG, SHI JIAMIN, ZHUANG YUHAN
Принадлежит:

An ejector-based cryogenic refrigeration system for cold energy recovery includes a first cryogenic refrigeration loop connected by a helium compressor and a cryogenic refrigerator and a second cryogenic refrigeration loop connected by the helium compressor, a regenerator, an ejector, a cold head of the cryogenic refrigerator, an end to be cooled and a pressure regulating valve. The cryogenic refrigerator is separated from the end to be cooled. The cryogenic refrigerator and the cryogenic helium cooling loop share a helium compressor, which improves the utilization efficiency of the device and reduces the cost. The ejector allows a part of fluids to circulate in the cryogenic loop, so as to maintain a required cryogenic condition, recover the pressure of the fluids, reduce the gas flowing though the compressor loop, and thus reduce the power consumption of the compressor. 1. An ejector-based cryogenic refrigeration system for cold energy recovery , comprising a helium compressor;wherein a first outlet of the helium compressor is connected to an inlet of a cryogenic refrigerator; an outlet of the cryogenic refrigerator is communicated with the inlet of the cryogenic refrigerator and is connected to an inlet of the helium compressor, so that a cold head of the cryogenic refrigerator has a temperature of 20 K;a second outlet of the helium compressor is connected to a primary inlet of an ejector; an outlet of the ejector has two ports; a first port of an outlet of the ejector is connected to a hot fluid inlet of a regenerator; a hot fluid outlet of the regenerator is connected to an inlet of the cold head of the cryogenic refrigerator; an outlet of the cold head of the cryogenic refrigerator is connected to an inlet of an end to be cooled; an outlet of the end to be cooled is connected to a cold fluid inlet of the regenerator; a cold fluid outlet of the regenerator is connected to a secondary inlet of the ejector; a second port of the outlet of the ejector is connected ...

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Номер записи: 32
04-02-2016 дата публикации

Ejector and heat pump apparatus including the same

Номер: US20160033183A1
Автор: Bunki Kawano, Takahiro Matsuura, Tomoichiro Tamura
Принадлежит: Panasonic Intellectual Property Management Co Ltd

An ejector includes a first nozzle, a second nozzle, an atomization mechanism, and a mixer. A working fluid in a liquid phase is supplied to the first nozzle as a drive flow. A working fluid in a gas phase is sucked into the second nozzle. The atomization mechanism is disposed at an end of the first nozzle and atomizes the working fluid in a liquid phase while maintaining the liquid phase. The mixer generates a fluid mixture by mixing the atomized working fluid generated by the atomization mechanism and the working fluid in a gas phase sucked into the second nozzle. The atomization mechanism includes an ejection section that generates a jet of the working fluid in a liquid phase and a collision surface with which the jet from the ejection section collides. The collision surface is inclined with respect to a direction in which the jet flows.

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Номер записи: 33
01-02-2018 дата публикации

SUPERCRITICAL REFRIGERATION CYCLE APPARATUS AND METHOD FOR CONTROLLING SUPERCRITICAL REFRIGERATION CYCLE APPARATUS

Номер: US20180031282A1
Автор: Kim Byeongsu, WOO Hyoungsuk, Yang Dongkeun
Принадлежит:

A supercritical refrigeration cycle apparatus and a method for controlling a supercritical refrigeration cycle apparatus are provided. The supercritical refrigeration cycle apparatus may include a compressor; a gas cooler configured to cool the compressed a refrigerant in a supercritical state; a pressure control electronic expansion valve connected to the gas cooler; a receiver configured to temporarily store the refrigerant; a flow control electronic expansion valve connected to an outlet side of the receiver to control a flow rate of the refrigerant; and a controller configured to control the flow control electronic expansion valve based on a suction superheat degree of refrigerant suctioned into the compressor and a target suction superheat degree, and control the pressure control electronic expansion valve based on a target operation high pressure and a current operation high pressure. In this way, flow control and pressure control of refrigerant may be respectively implemented in a separate manner, thereby enhancing reliability and operation efficiency of the compressor, respectively. 1. A supercritical refrigeration cycle apparatus , comprising:a compressor configured to compress a refrigerant in a supercritical state;a gas cooler configured to cool the compressed refrigerant;a pressure control electronic expansion valve connected to the gas cooler to control a pressure of the refrigerant;a receiver configured to temporarily store the refrigerant which has passed through the pressure control electronic expansion valve;a flow control electronic expansion valve connected to an outlet side of the receiver to control a flow rate of the refrigerant; anda controller configured to control the flow control electronic expansion valve based on a suction superheat degree of refrigerant suctioned into the compressor and a target suction superheat degree, and control the pressure control electronic expansion valve based on a target operation high pressure and a current ...

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Номер записи: 34
01-02-2018 дата публикации

Electronic expansion valve (eev) control system and method

Номер: US20180031288A1
Автор: Brian D. Rigg, Jeffrey N. Nichols, Robert L. Eskew, Shawn A. Hern
Принадлежит: Johnson Controls Technology Co

Systems and methods to control an electronic expansion valve (EEV) of a vapor compression system are described. A heating ventilation, and air conditioning (HVAC) system includes control circuitry having a sensor. The control circuitry sets a control setpoint of a vapor compression system such that an electronic expansion valve operates across a first operating range. The control circuitry receives a signal from the sensor indicative of an operating condition of the vapor compression system. The control circuitry adjusts the control setpoint based at least in part on the operating condition. The control circuitry controls operation of the electronic expansion valve based at least in part on the adjusted control setpoint, wherein the electronic expansion valve operates across a second operating range, different from the first operating range, at the adjusted control setpoint.

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Номер записи: 35
01-02-2018 дата публикации

REFRIGERATOR

Номер: US20180031298A1
Автор: KIM Seongjae, OH Seunghwan, SUL Heayoun
Принадлежит:

A refrigerator according to an embodiment of the present invention includes a cabinet in which a storage space is formed; a main evaporator which is installed at one side of an inner portion of the storage space to cool the storage space; a case which is installed on the other side of the inner portion of the storage space and defines a deep-freezing storage chamber; a drawer which is accommodated in the case so as to be retractable and withdrawable and in which food is stored; and a rapid cooling module which is provided on a rear side of the inner portion of the case and rapidly cools the deep-freezing storage chamber, in which the rapid cooling module may includes an auxiliary evaporator; and a thermoelectric device which is coupled to the auxiliary evaporator and cools the deep-freezing storage chamber through heat exchange by heat conduction. 1. A refrigerator , comprising:a cabinet in which a storage space is formed;a main evaporator which is installed at one side of an inner portion of the storage space to cool the storage space;a case which is installed on the other side of the inner portion of the storage space and defines a deep-freezing storage chamber;a drawer which is accommodated in the case so as to be retractable and withdrawable and in which food is stored; anda rapid cooling module which is provided on a rear side of the inner portion of the case and rapidly cools the deep-freezing storage chamber,wherein the rapid cooling module includes:an auxiliary evaporator; anda thermoelectric device which is coupled to the auxiliary evaporator and cools the deep-freezing storage chamber through heat exchange by heat conduction.2. The refrigerator according to claim 1 ,wherein the rapid cooling module further includesa heat conduction unit which is attached to a refrigerant pipe of the auxiliary evaporator and attaches a heating surface of the thermoelectric device to a front surface thereof;a heat sink which is attached to the endothermic surface of the ...

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Номер записи: 36
05-02-2015 дата публикации

HEAT PUMP, IN PARTICULAR FOR HEATING A VEHICLE INTERIOR, AND METHOD FOR OPERATING A HEAT PUMP

Номер: US20150033777A1
Автор: SCHYDLO Alexander
Принадлежит:

A heat pump for heating a vehicle interior includes a compressor arranged in a heat-pump circuit of a working medium, a condenser, a throttle valve and an evaporator. Gaseous working medium is compressed in the compressor. The compressor outlet is connected to the inlet of the condenser in which the working medium condenses, at the same time discharging heat, the heat being delivered as useful heat directly or indirectly to a consumer. The condenser is followed by a jet pump, to which the liquid working medium coming from the condenser is delivered as driving medium and to which the gaseous working medium flowing out from the evaporator is delivered as suction medium, in such a way that the driving medium and suction medium are compressed in the jet pump as a two-phase mixture. The jet-pump outlet is connected to the inlet of a separator, to which the two-phase mixture is delivered and in which the gaseous working medium is separated from the liquid working medium. The gas outlet of the separator is connected to the compressor inlet and the liquid outlet of the separator is connected to the inlet of the throttle valve, the liquid working medium being throttled in the throttle valve, and the outlet of the throttle valve is connected to the inlet of the evaporator, in which, by the supply of heat, phase transformation takes place to the gaseous working medium. 1. A heat pump with a heat-pump circuit comprising:a working medium routed in the heat-pump circuit;a compressor for compressing the working medium;a condenser for condensing the working medium and discharging heat, the heat being delivered as useful heat to a consumer;a throttle valve having an inlet and an outlet;an evaporator having an inlet receiving the working medium from the outlet of the throttle valve and for carrying out a phase transformation of the working medium to a gaseous form by the supply of heat;a jet pump for receiving the working medium in a liquid form as a driving medium from the condenser ...

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Номер записи: 37
05-02-2015 дата публикации

EJECTOR

Номер: US20150033790A1
Автор: Matsui Hideya, Nishijima Haruyuki, SUZUKI Tatsuhiro, Takano Yoshiaki, Yamada Etsuhisa, YOKOYAMA Yoshiyuki
Принадлежит: Denso Corporation

An ejector includes a body member having a depressurizing space that depressurizes a refrigerant which flows out of a swirling space that swirls the refrigerant, a suction passage that draws the refrigerant from an external, and a pressurizing space that mixes a refrigerant jetted from the depressurizing space with a refrigerant drawn from the suction passage and pressurizes the mixed refrigerant, and a conical passage formation member arranged in the depressurizing space and in the pressurizing space. A nozzle passage is formed of a refrigerant passage between an inner peripheral surface of the depressurizing space and an outer peripheral surface of the passage formation member, and a diffuser passage is formed of a refrigerant passage between an inner peripheral surface of a portion that defines the pressurizing space and an outer peripheral surface of the passage formation member. 1. An ejector used for a vapor compression refrigeration cycle , comprising:a body member including a refrigerant inflow port through which a refrigerant is introduced, a swirling space in which the refrigerant introduced from the refrigerant inflow port swirls, a depressurizing space in which the refrigerant flowing out of the swirling space is depressurized, a suction passage communicating with a downstream side of the depressurizing space in a refrigerant flow and being a passage through which a refrigerant is drawn from an external, and a pressurizing space in which the refrigerant jetted from the depressurizing space and the refrigerant drawn through the suction passage are mixed and pressurized;a passage formation member having at least a portion arranged in the depressurizing space and a portion arranged in the pressurizing space;a nozzle passage provided in a space between an inner peripheral surface of a portion of the body member which defines the depressurizing space and an outer peripheral surface of the passage formation member, the nozzle passage functioning as a nozzle ...

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Номер записи: 38
17-02-2022 дата публикации

MULTIFUNCTIONAL EXPANSION VALVE

Номер: US20220049780A1
Автор: Kim Yeonho
Принадлежит:

A multifunctional expansion valve may include a second exit, and a chamber fluidically-communicating with the first entry, the second entry, the first exit, and the second exit, and a needle valve movably mounted in the chamber of the valve body along up and down directions, wherein the first entry and the first exit are selectively fluidically-communicated to each other and the second entry and the second exit are selectively fluidically-communicated to each other according to a position of the needle valve. 1. A multifunctional expansion valve apparatus comprising:a valve body including a first entry, a second entry, a first exit, a second exit, and a chamber fluidically-communicating with the first entry, the second entry, the first exit, and the second exit; anda needle valve movably mounted in the chamber of the valve body along a longitudinal direction of the chamber;wherein the first entry and the first exit are selectively fluidically-communicated to each other and the second entry and the second exit are selectively fluidically-communicated to each other according to a position of the needle valve.2. The multifunctional expansion valve apparatus of claim 1 , wherein the chamber includes:a first chamber connected to the first entry and the first exit, anda second chamber connected to the second entry, disposed below the first chamber, and having a diameter larger than a diameter of the first chamber;wherein the valve body includes a valve inclined portion formed in a boundary between the second chamber and the second exit.3. The multifunctional expansion valve apparatus of claim 2 , wherein the needle valve includes:a needle body;a needle enlargement portion corresponding to the dimeter of the first chamber;a needle expansion portion formed below the needle enlargement portion and corresponding to a dimeter of the second exit; anda needle inclined portion formed in an end portion of the needle expansion portion.4. The multifunctional expansion valve ...

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Номер записи: 39
31-01-2019 дата публикации

Outdoor Unit of an Air Conditioning System, Air Conditioning System, and Control Method Thereof

Номер: US20190032968A1
Автор: CAO Rui, LI Yajun, Li Yongmei, Liu Min, Wang Yuanpeng, Zhang Wenqiang
Принадлежит:

A heat recovery variable-frequency multi-split heat pump system and a control method thereof. The system includes an outdoor unit and at least two indoor units. The system is a three-pipe heating recovery multi-split heat pump system designed on the basis of a four-way reversing valve, and one indoor unit thereof is provided with two electronic expansion valves and two heat exchangers so that any indoor unit in the system can operate independently under three working conditions of refrigeration, heating or heat recovery dehumidification. Under multi-split condition, the system can operate under six working conditions, namely, the full-refrigeration working condition, the full-heating working condition, the common-heat-recovery working condition, the common-heat-recovery-dehumidification working condition, the heat recovery dehumidification-refrigeration-combination working condition and the heat recovery dehumidification-heating-combination working condition. Under the heat recovery dehumidification condition, a lower outlet air temperature, during low-temperature dehumidification, is raised by means of heat removal of a condenser so as to achieve the purpose of dehumidification without temperature fall or temperature rise, so that the thermal comfort and efficiency of the system are improved, and the refrigerating capacity and heating capacity of the system are effectively improved. 1. An outdoor unit of an air conditioning system , the outdoor unit comprising a four-way valve , an outdoor heat exchanger , a throttling element , a second electromagnetic valve , a third electromagnetic valve , and a compressor , wherein:an exhaust end of the compressor is connected with an A end of the four-way valve; a B end of the four-way valve is connected with one end of the outdoor heat exchanger, and another end of the outdoor heat exchanger is connected with a first connecting pipe through the throttling element; a C end of the four-way valve is connected with a suction end ...

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Номер записи: 40
31-01-2019 дата публикации

AIR CONDITIONING SYSTEM WITH VAPOR INJECTION COMPRESSOR

Номер: US20190032981A1
Автор: Brown Robert R., Hammond Timothy A.
Принадлежит:

An air conditioning system can be toggled between a heating mode, in which heat is withdrawn from a source (e.g., a geothermal source) and deposited into a conditioned space (e.g., a building), and a cooling mode, in which heat is withdrawn from the conditioned space and deposited into the source. The air conditioning system uses a combination of efficiency-enhancing technologies, including injection of superheated vapor into the system's compressor from an economizer circuit, adjustable compressor speed, the use of one or coaxial heat exchangers and the use of electronic expansion valves that are continuously adjustable from a fully closed to various open positions. A controller may be used to control the system for optimal performance in both the heating and cooling modes, such as by disabling the economizer circuit and vapor injection when the system is in the cooling mode. 1. A reversible heat pump system housed in a housing for heating and cooling a space , comprising:a refrigerant circuit through which refrigerant is configured to flow;a variable speed compressor disposed on the refrigerant circuit, the compressor including a compressor inlet, a compressor outlet, and a vapor injection inlet disposed between the compressor inlet and the compressor outlet;a coaxial load heat exchanger disposed on the refrigerant circuit to exchange heat between the refrigerant and either a cooling load or a heating load;a coaxial source heat exchanger disposed on the refrigerant circuit to exchange heat between the refrigerant and a source;a reversing valve disposed on the refrigerant circuit between the compressor and the load and source heat exchangers and selectable to effect a heating mode and a cooling mode, wherein in the heating mode the reversing valve routes the refrigerant from the compressor outlet to the load heat exchanger and routes the refrigerant from the source heat exchanger to the compressor inlet, wherein in the cooling mode the reversing valve routes the ...

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Номер записи: 41
30-01-2020 дата публикации

HVAC Systems and Methods with Multiple-Path Expansion Device Subsystems

Номер: US20200033030A1
Автор: Liu Wenqian
Принадлежит:

A heating, ventilation, air conditioning (HVAC) system includes a multi-path expansion device subsystem positioned between a condenser and an evaporator. The multi-path expansion device subsystem includes a flow selector operative to receive a refrigerant from the condenser and selectively deliver the same to a full-load pathway or to a partial-load pathway. The full-load pathway has a modulating valve and a fixed orifice sized for a full-load situation, and the partial-load pathway has a thermal expansion valve (TXV) sized for partial load operation. A controller uses an actuator of the flow selector to choose which pathway is authorized according to certain process logic. Other methods and systems are presented. 1. A method for cooling air in a heating , ventilating , and air conditioning (HVAC) system comprising: moving refrigerant through a closed refrigeration circuit having a compressor , a condenser , an expansion device subsystem , and an evaporator; wherein the expansion device subsystem comprises a full-load pathway and at least one partial-load pathway and a flow selector for directing refrigerant flow from the condenser to either the partial-load pathway or the full-load pathway; measuring a refrigerant pressure on a high-pressure side of the closed refrigeration circuit; directing refrigerant flow from the condenser to the full-load pathway when the refrigerant pressure is greater than or equal to a first preselected activation pressure and stepping down a refrigerant pressure with a set orifice; directing refrigerant flow from the condenser to the partial-load pathway when the refrigerant pressure is less than a second preselected activation pressure and stepping down a refrigerant pressure with a variable expansion device configured for partial loads; and delivering refrigerant from the full-load pathway or partial-load pathway to the evaporator.2. The method of claim 1 , wherein the condenser comprises a micro-channel condenser.3. The method of claim ...

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Номер записи: 42
04-02-2021 дата публикации

AIR CONDITIONER HEAT DISSIPATION STRUCTURE CONTROL METHOD AND SYSTEM

Номер: US20210033321A1
Автор: BAI WENBO, CHENG Shaojiang, HE XUEFEI, LENG YU, Liu Yuhui
Принадлежит:

An air conditioning heat dissipation structure control method and a system includes the steps obtaining a real-time temperature Te of the heat generating component; if T>T, opening the solenoid valve SV and adjusting the electronic expansion valve to a preset initial opening degree; obtaining an update real-time temperature Tof the heat generating component after a setting time period; if the update real-time temperature T>T, performing the following steps every set period of time, obtaining a refrigerant temperature refrigerant temperature Tat the inlet end of the refrigerant heat dissipation pipe and a refrigerant temperature Tat the outlet end of the refrigerant heat dissipation pipe; calculating a real-time temperature difference ΔTof the inlet end temperature Tand the outlet end temperature T, wherein ΔT=T−T, obtaining a preset target temperature difference ΔTand calculating a deviation ΔT, ΔT=ΔT−ΔT; calculating a deviation change rate ΔΔT=ΔT−ΔT, and adjusting the opening degree of the electronic expansion valve based on the deviation ΔTand the deviation change rate ΔΔT, enables the temperature difference between the inlet end and the outlet end of the refrigerant heat dissipation pipe reaches the target temperature difference so as to ensure a good heat dissipation effect and keep the heat generating component working in a good condition and also lowers the cost by using refrigerant for transferring heat from the heat generating component. With the method, the reliability and stability of the air conditioning operation are improved, and the problem of poor heat dissipation reliability and high heat dissipation cost in the prior art is solved. 1. A method for controlling a heat dissipation structure of an air conditioner wherein:the heat dissipation structure comprising:a refrigerant heat dissipation pipe with an inlet end connected to a liquid pipe between an outdoor heat exchanger and an indoor heat exchanger and an outlet end connected to an inlet pipe of ...

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Номер записи: 43
09-02-2017 дата публикации

REFRIGERATION DEVICE

Номер: US20170038099A1
Автор: FANG Jinsheng, HUANG Boliang, Huang Hui, LIANG Xiangfei, Zheng Bo, ZHUANG Rong
Принадлежит: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

The invention discloses a refrigeration device, including: a first compressor unit (), an indoor heat exchanger () and an outdoor heat exchanger (), sequentially communicated; a first throttle device () and a second throttle device (), sequentially connected in series; and an air supply device (), provided between the first throttle device () and the second throttle device (). The refrigeration device further includes a second compressor unit (). An air intake port (B) of the second compressor unit () is communicated with an outlet of the outdoor heat exchanger (). An outlet (E) of the second compressor unit () is communicated with the air supply port (C) of the first compressor unit () and an air exhaust port (D) of the first compressor unit () by means of a three-way valve (), respectively. 1. A refrigeration device , comprising:{'b': 101', '3', '2', '101', '3', '3', '2', '2', '101', '101, 'a first compressor unit (), an indoor heat exchanger () and an outdoor heat exchanger (), sequentially communicated, an outlet of the first compressor unit () is communicated with an inlet of the indoor heat exchanger (), an outlet of the indoor heat exchanger () is communicated with an inlet of the outdoor heat exchanger (), an outlet of the outdoor heat exchanger () is communicated with an air intake port (A) of the first compressor unit (), and the first compressor unit () comprising two compression chambers connected in series;'}{'b': 401', '402', '3', '2, 'a first throttle device () and a second throttle device (), sequentially connected in series and provided between the outlet of the indoor heat exchanger () and the inlet of the outdoor heat exchanger (); and'}{'b': 5', '401', '402', '5', '401', '5', '101', '5', '402, 'an air supply device (), provided between the first throttle device () and the second throttle device (), an inlet of the air supply device () is communicated with the first throttle device (), a first outlet of the air supply device () is communicated ...

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Номер записи: 44
07-02-2019 дата публикации

Thermal Storage Of Carbon Dioxide System For Power Outage

Номер: US20190041102A1
Автор: Fardis Najafifard, Shitong Zha, Xi SUN
Принадлежит: Heatcraft Refrigeration Products LLC

A system includes a high side heat exchanger, a flash tank, a first load, a second load, and a thermal storage tank. The high side heat exchanger is configured to remove heat from a refrigerant. The flash tank is configured to store the refrigerant from the high side heat exchanger and discharge a flash gas. The first load is configured to use the refrigerant from the flash tank to remove heat from a first space proximate to the first load. The second load is configured to use the refrigerant from the flash tank to remove heat from a second space proximate to the second load. The thermal storage tank is configured, when a power outage is determined to be occurring, to receive the flash gas from the flash tank, and remove heat from the flash gas.

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Номер записи: 45
06-02-2020 дата публикации

VALVE, EXPANSION VALVE, AND STEPPING CONTROL METHOD THEREOF

Номер: US20200041180A1
Автор: HUANG Shih-Nan
Принадлежит:

Disclosed is a valve, an expansion valve and their stepping control methods. The valve includes a valve body, a limiting unit, and a heating unit installed in the limiting unit. The valve body has an actuation space, and a first through hole and a second through hole communicated with the actuation space, and the actuation space further contains a valve seat disposed between the first and second through holes, and the limiting unit is installed in the actuation space, and a variable spacing is defined between the limiting unit and the valve seat. When the variable spacing is reduced, the heating unit heats up the interior of the limiting unit for heating to prevent ice buildups, so as to maintain a flowing state of the variable spacing. 1. An expansion valve , comprising:a valve body, is hollow and has an actuation space and a containing space, a first through hole and a second through hole are respectively communicated with the actuation space being defined on the valve body, and a valve seat being arranged in the actuation space and between the first through hole and the second through hole;a driving unit, installed in the containing space;a transmission unit, installed in the containing space and transmissively connected to the driving unit;a limiting unit, installed in the actuation space and driven by the transmission unit;a control unit, configured to control the driving unit, and the transmission unit is driven by the driving unit to shift the limiting unit in the actuation space relatively toward the valve seat; anda heating unit, installed in the limiting unit.2. The expansion valve of claim 1 , wherein the containing space is divided into a first space and a second space claim 1 , the driving unit is disposed in the first space claim 1 , and the transmission unit is disposed in the second space.3. The expansion valve of claim 2 , further comprising a latching structure installed between the first space and the second space claim 2 , and the driving unit is ...

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Номер записи: 46
16-02-2017 дата публикации

EJECTOR REFRIGERATION CYCLE

Номер: US20170045269A1
Автор: HASEGAWA Hiroya, Ogata Gouta, SHIROTA Yuichi, SUZUKI Tatsuhiro
Принадлежит:

In an ejector refrigeration cycle, an inlet of a nozzle portion of an ejector is connected to a refrigerant outlet side of a high-stage side evaporator, a refrigerant suction port of the ejector is connected to a refrigerant outlet side of a low-stage side evaporator, and an internal heat exchanger is provided for exchanging heat between a high-pressure refrigerant flowing into a low-stage side throttle device for decompressing the refrigerant flowing into the low-stage side evaporator, and a low-stage side low-pressure refrigerant flowing out of the low-stage side evaporator. Because a difference in enthalpy between the inlet and outlet of the low-stage side evaporator can be enlarged, the cooling capacities exhibited by the respective evaporators can be adjusted to be closer to each other even if the flow-rate ratio Ge/Gn of the suction refrigerant flow rate Ge to the injection refrigerant flow rate Gn is set to a relatively small value so as to make it possible to improve the COP of the cycle. 1. An ejector refrigeration cycle comprising:a compressor that compresses and discharges a refrigerant;a radiator that dissipates heat from the refrigerant discharged from the compressor;a branch portion that branches a flow of the refrigerant flowing out of the radiator;a first decompression device and a second decompression device that decompress the refrigerant flowing out of the radiator, wherein one refrigerant outflow port of the branch portion is connected to an inlet side of the first decompression device, and the other refrigerant outflow port of the branch portion is connected to an inlet side of the second decompression device;a first evaporator that evaporates the refrigerant decompressed by the first decompression device to cool air;a second evaporator that evaporates the refrigerant decompressed by the second decompression device to cool air;an ejector that draws the refrigerant on a downstream side of the second evaporator from a refrigerant suction port by a ...

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Номер записи: 47
15-02-2018 дата публикации

EJECTOR, MANUFACTURING METHOD THEREOF, AND EJECTOR-TYPE REFRIGERATION CYCLE

Номер: US20180045225A1
Автор: KOHARA Yorito, Mizutori Kazunori, NAKASHIMA Ryota, Nishijima Haruyuki, SHINTANI Hiroshi, Takano Yoshiaki, Yamada Etsuhisa, YOKOYAMA Yoshiyuki
Принадлежит:

An ejector has a nozzle, a body, a passage defining member and a drive portion. The body has a refrigerant suction port and a pressure increasing portion. A nozzle passage is defined between an inner surface of the nozzle and an outer surface of the passage defining member and has a minimum sectional area portion, a tapered portion, and an expansion portion. The minimum sectional area portion has a smallest passage sectional area. The tapered portion is located upstream of the minimum sectional area portion in a refrigerant flow direction and has a passage sectional area decreasing toward the minimum sectional area portion gradually. The expansion portion is located downstream of the minimum sectional area portion in the refrigerant flow direction and has a passage sectional area increasing gradually. The passage defining member has a groove that is recessed to increase the passage sectional area of the nozzle passage. 1. An ejector for a vapor compression refrigeration cycle device , the ejector comprising:a nozzle that jets a refrigerant as an injection refrigerant; a refrigerant suction port that draws a refrigerant, as a suction refrigerant, from outside using a suction force of the injection refrigerant jetting out of the nozzle and', 'a pressure increasing portion that mixes the injection refrigerant and the suction refrigerant to be a mixed refrigerant and increases a pressure of the mixed refrigerant;, 'a body having'}a passage defining member that is located in a refrigerant passage, the refrigerant passage being defined in the nozzle; anda drive portion that moves the passage defining member, whereinthe refrigerant passage has a nozzle passage defined between an inner surface of the nozzle and an outer surface of the passage defining member, a minimum sectional area portion that has a smallest passage sectional area in the nozzle passage,', 'a tapered portion that is located on an upstream side of the minimum sectional area portion in a refrigerant flow ...

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Номер записи: 48
25-02-2021 дата публикации

Energy saving system for producing cooled and heated liquid

Номер: US20210052106A1
Автор: Lynton MCKAY
Принадлежит: Billi Australia Pty Ltd

A system for producing a cooled liquid and a heated liquid. Such a system may be embodied in the form of a unitary apparatus configured to dispense chilled water and near boiling water for human consumption. In one form, there is provided a system for heating and cooling a liquid, the system including: a liquid cooling unit having a heat output component, and a first liquid heater configured to hold and heat a liquid. The first liquid heater is configured to retain a first body of the liquid about the heat output component such that the liquid is heated, and furthermore that a temperature gradient is formed and maintained within the first body of the liquid.

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Номер записи: 49
03-03-2022 дата публикации

HEAT EXCHANGE SYSTEM AND METHOD FOR RECLAIMING CORROSION INHIBITOR IN HEAT EXCHANGE SYSTEM

Номер: US20220065502A1
Автор: Ding Haiping, Stark Michael A., ZHANG Haitao, Zhang Xiangyuan
Принадлежит:

A heat exchange system and a method for reclaiming corrosion inhibitor in a heat exchange system are provided by the present disclosure. The heat exchange system includes a compressor (), a condenser () and an evaporator () connected in sequence, and the heat exchange system further includes a system for reclaiming corrosion inhibitor which includes an ejector () including a high-pressure fluid inlet () connected to an outlet () of the compressor, a suction fluid inlet () connected to the heat exchange system to extract a liquid-state refrigerant in the heat exchange system, and a fluid outlet () leading to bearings of the compressor, wherein a pressurizing device () is provided between the outlet of the compressor and the high-pressure fluid inlet of the ejector. The heat exchange system according to the embodiments of the present disclosure can provide sufficient corrosion inhibitor to the bearings of the compressor under various working conditions. 1. A heat exchange system , comprising: a compressor , a condenser and an evaporator connected in sequence , wherein the heat exchange system further comprises a system for reclaiming corrosion inhibitor , the system for reclaiming corrosion inhibitor comprising:an ejector comprising a high-pressure fluid inlet connected to an outlet of the compressor, a suction fluid inlet connected to the heat exchange system to extract a liquid-state refrigerant in the heat exchange system, and a fluid outlet leading to bearings of the compressor, wherein a pressurizing device is provided between the outlet of the compressor and the high-pressure fluid inlet of the ejector.2. The heat exchange system according to claim 1 , wherein the pressurizing device is a pump or an additional compressor.3. The heat exchange system according to claim 1 , wherein the suction fluid inlet is connected to a bottom of the evaporator to extract a liquid-state refrigerant with corrosion inhibitor.4. The heat exchange system according to claim 1 , ...

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Номер записи: 50
26-02-2015 дата публикации

Thermal Expansion Valve with Power Element

Номер: US20150052924A1
Автор: Gilman Steven D., Milliman Michael K.
Принадлежит: Standard Motor Products, Inc.

An improved power element for use with a thermal expansion valve. The power element contains a filter positioned at an open end of the power element to prevent debris from entering the body of the thermal expansion valve. 1. A thermal expansion valve for use in an automotive air conditioner comprising:a body including an inlet port fluidly connected to an evaporator and an outlet port fluidly connected to a condenser;a power element having an annular domed upper housing, a mating annular lower housing having an opening in the bottom of the annular lower housing, an annular diaphragm having an upper surface and a lower surface wherein the lower surface of the diaphragm and the annular lower housing define a diaphragm chamber, a sleeve that passes through the opening in the bottom of the annular lower housing and a stem slidably disposed within the sleeve; anda paper filter disposed in a fluid path between the evaporator and the diaphragm chamber.2. The thermal expansion valve of further including a frictional clip interdisposed around the valve stem for securing the filter.3. The thermal expansion valve of wherein the filter is made of LyTherm® paper.4. A power element for use with a thermal expansion valve of an automotive air conditioner comprising:an annular domed upper housing;a mating annular lower housing having an opening in the bottom of the annular lower housing;an annular diaphragm having an upper surface and a lower surface wherein the lower surface of the diaphragm and the annular lower housing define a diaphragm chamber;a sleeve that passes through the opening in the bottom of the annular lower housing;a stem slidably disposed within the sleeve; anda paper filter interdisposed around the valve stem.5. The power element of further including a frictional clip interdisposed around the valve stem for securing the filter.6. The power element of wherein the filter is made of LyTherm® paper. This application claims priority to U.S. Provisional Application 61/ ...

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Номер записи: 51
14-02-2019 дата публикации

AIR-CONDITIONING APPARATUS

Номер: US20190049154A1
Автор: Hatomura Takeshi, Ikeda Soshi, Takenaka Naofumi, Wakamoto Shinichi
Принадлежит: Mitsubishi Electric Corporation

An air-conditioning apparatus includes a refrigerant circuit in which pipes sequentially connect a compressor, a flow switching device, a heat source side heat exchanger, an expansion device, a load side heat exchanger, and the flow switching device, and configured to perform a cooling operation and a heating operation switched by the flow switching device, an oil separator configured to separate refrigerating machine oil from refrigerant discharged from the compressor, a first bypass passage in which fluid flowing out of the oil separator flows, an auxiliary heat exchanger configured to cool the fluid, a first flow control device configured to control passing of the fluid, a second bypass passage in which liquid refrigerant or two-phase gas-liquid refrigerant flowing through one of the pipes connecting the heat source side heat exchanger and the expansion device flows, and a second flow control device configured to control passing of refrigerant. 1. An air-conditioning apparatus comprising:a refrigerant circuit in which pipes sequentially connect a compressor, a flow switching device, a heat source side heat exchanger, an expansion device, a load side heat exchanger, and the flow switching device, and configured to perform a cooling operation and a heating operation switched by the flow switching device, the cooling operation being an operation in which a discharge side of the compressor is connected to the heat source side heat exchanger and a suction side of the compressor is connected to the load side heat exchanger, the heating operation being an operation in which the discharge side of the compressor is connected to the load side heat exchanger and the suction side of the compressor is connected to the heat source side heat exchanger;an oil separator disposed in one of the pipes connecting a discharge unit of the compressor and the flow switching device, and configured to separate refrigerating machine oil from refrigerant discharged from the compressor;a ...

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Номер записи: 52
14-02-2019 дата публикации

Thermal management system controlling dynamic and steady state thermal loads

Номер: US20190049156A1
Автор: Igor Vaisman, Kyle Burkholder, Steve T. Gagne
Принадлежит: Rolls Royce Corp, Rolls Royce North American Technologies Inc

A cooling system includes a heat exchanger through which a refrigerant flows, the heat exchanger having a fluid passing therethrough such that heat is rejected to the fluid, an evaporator, a refrigerant piping split point that receives the refrigerant at a given pressure from the heat exchanger and splits the refrigerant flow into a first circuit and a second circuit, the first circuit having an expansion valve that receives the refrigerant at the given pressure, and the second circuit having a first turbine coupled to a first compressor, wherein the first turbine receives the refrigerant at the given pressure, and a set of valves arranged to direct the refrigerant through the first circuit, the second circuit, or both the first and second circuits based on ambient conditions of the cooling system.

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Номер записи: 53
13-02-2020 дата публикации

Refrigerator

Номер: US20200049398A1
Автор: Heayoun Sul, Seongjae KIM, Seunghwan OH
Принадлежит: LG ELECTRONICS INC

A refrigerator includes a cabinet in which a storage space is formed; a main evaporator which is installed at one side of an inner portion of the storage space to cool the storage space; a case which is installed on the other side the inner portion of the storage space and defines a deep-freezing storage chamber; a drawer which is accommodated in the case so as to be retractable and withdrawable and in which food is stored; and a rapid cooling module which is provided on a rear side of the inner portion of the case and rapidly cools the deep-freezing storage chamber, in which the rapid cooling module may includes an auxiliary evaporator; and a thermoelectric device which is coupled to the auxiliary evaporator and cools the deep-freezing storage chamber through heat exchange by heat conduction.

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Номер записи: 54
23-02-2017 дата публикации

CARBON DIOXIDE COOLING SYSTEM WITH SUBCOOLING

Номер: US20170051950A1
Автор: Uselton Robert B.
Принадлежит:

A subcooling controller includes a sensor and a processor. The sensor measures one or more of a temperature external to a first heat exchanger that removes heat from carbon dioxide refrigerant, a temperature of the carbon dioxide refrigerant, and a pressure of the carbon dioxide refrigerant. The processor determines that one or more of the measured temperature external to the first heat exchanger, the temperature of the carbon dioxide refrigerant, and the pressure of the carbon dioxide refrigerant is above a threshold and in response to that determination, activates a subcooling system. The subcooling system includes a condenser, a second heat exchanger, and a compressor. The condenser removes heat from a second refrigerant. The second heat removes heat from the carbon dioxide refrigerant stored in a flash tank. The compressor compresses the second refrigerant from the second heat exchanger and sends the second refrigerant to the condenser. 1. A subcooling controller comprising: a temperature external to a first heat exchanger configured to remove heat from carbon dioxide refrigerant, the first heat exchanger further configured to send the carbon dioxide refrigerant to a flash tank;', 'a temperature of the carbon dioxide refrigerant; and', 'a pressure of the carbon dioxide refrigerant; and, 'a sensor configured to measure one or more of determine that one or more of the measured temperature external to the first heat exchanger, the measured temperature of the carbon dioxide refrigerant, and the measured pressure of the carbon dioxide refrigerant is above a threshold;', a condenser configured to remove heat from a second refrigerant;', 'a second heat exchanger coupled to the flash tank, the second heat exchanger configured to receive the second refrigerant from the condenser, the second heat exchanger further configured to remove heat from the carbon dioxide refrigerant stored in the flash tank; and', 'a compressor configured to compress the second refrigerant from ...

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Номер записи: 55
23-02-2017 дата публикации

CONTROL VALVE

Номер: US20170052548A1
Автор: Kaneko Takeshi, Satake Ryosuke
Принадлежит:

A control valve of an embodiment includes a disc coaxially in contact with a diaphragm, and a shaft configured to transmit a drive force in an axial direction caused by displacement of the diaphragm to a valve element. The diaphragm has a corrugated portion between a flat portion and the outer peripheral portion, the flat portion having a contact surface with which the disc is in contact. The corrugated portion includes substantially N+0.5 corrugations (N being a natural number) each protruding relative to a reference surface, the corrugations being formed between the outer peripheral portion and the flat portion, the reference surface being one surface of the outer peripheral portion. A height of each of the N corrugations of the corrugated portion is smaller than a height of the flat portion, the heights each being a height relative to the reference surface in an unloaded condition. 1. A control valve comprising:a body having an inlet port through which a fluid is introduced, an outlet port through which the fluid is delivered, a valve hole in a fluid passage connecting the inlet port and the outlet port, and a pressure chamber separated from the fluid passage by a partition;a valve element disposed in the fluid passage and configured to move toward and away from the valve hole to adjust an opening degree of a valve section;a power element including a housing forming the pressure chamber between the body and the housing, and a diaphragm having an outer peripheral portion supported by the housing and partitioning an inside of the housing into a closed space separated from the pressure chamber and an open space being open toward the pressure chamber;a disc disposed in the open space and coaxially in contact with the diaphragm; anda shaft extending through the partition and slidably supported in an axial direction thereof, having a first end connected with the diaphragm via the disc and a second end connected with the valve element, and being configured to transmit a ...

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Номер записи: 56
21-02-2019 дата публикации

Recuperated superheat return trans-critical vapor compression system

Номер: US20190056154A1
Автор: Eric S. Donovan, Eugene C. Jansen
Принадлежит: Rolls Royce North American Technologies Inc

Methods and systems for recuperated superheat return are provided. A coolant is supplied in a vapor state to a compressor. The coolant compressed by the compressor is cooled with a gas cooler. The coolant cooled by the gas cooler is supplied to an inlet of a high pressure side of a recuperator. The coolant from an outlet of the high pressure side of the recuperator is supplied to a portion of a coolant circuit. The coolant is supplied back from the portion of the coolant circuit to an inlet of a low pressure side of the recuperator. The coolant in the low pressure side of the recuperator is heated with thermal energy transferred by the recuperator from the coolant in the high pressure side of the recuperator. The coolant in the vapor state from an outlet of the low pressure side of the recuperator is supplied to the compressor.

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Номер записи: 57
04-03-2021 дата публикации

REFRIGERATION CYCLE CONTROL

Номер: US20210063043A1
Автор: Yang Liming
Принадлежит: Hitachi-Johnson Controls Air Conditioning, Inc

A refrigerant cycle of the present invention includes including an outdoor unit, a plurality of indoor units, and a controller for controlling the refrigeration cycle using at least one EEV. The controller comprises a velocity PID component executing a velocity PID control using pulse number for driving an EEV, three-state controller determining a driving state of the EEV and generating pulse commands designating the driving state, and a state machine driving the EEV depending on the pulse commands generated by the three-state controller. 1. A refrigeration cycle including an outdoor unit , a plurality of indoor units , and a controller for controlling the refrigeration cycle using at least one electronic expansion valve (EEV) , the controller comprising:a velocity PID component executing velocity PID control using a pulse number for driving an EEV;a three-state controller determining a driving state of the EEV and generating pulse commands designating the driving state;a state machine driving the EEV depending on the pulse commands generated by the three-state controller.2. The refrigeration cycle of claim 1 , wherein the driving state is selected from a plurality of potential driving states of the EEV claim 1 , the driving states comprising an opening state claim 1 , a closing state claim 1 , and a stopping state.3. The refrigeration cycle of claim 1 , wherein the three-state controller includes storage storing a value for determining the driving state and the value magnified with respect to a stroke time of the EEV.4. The refrigeration cycle of claim 3 , wherein the three-state controller generates the pulse commands for opening the EEV and the pulse commands for closing the EEV depending on the value stored in the storage.5. The refrigeration cycle of claim 1 , wherein the refrigeration cycle accepts a request for manual operation under the velocity PID control and allows the manual operation using computation results of the velocity PID component.6. The ...

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Номер записи: 58
10-03-2016 дата публикации

REFRIGERATION CYCLE DEVICE

Номер: US20160068047A1
Автор: Kobayashi Hiroyuki, Yamada Atsushi
Принадлежит:

A refrigeration cycle device includes an interior condenser that exchanges heat between a high-pressure refrigerant and ventilation air to heat the ventilation air, an exterior heat exchanger that exchanges heat between outside air and the refrigerant downstream of the interior condenser, an interior evaporator that exchanges heat between a low-pressure refrigerant downstream of the exterior heat exchanger and the ventilation air before passing through the interior condenser, and an internal heat exchanger that exchanges heat between the refrigerant flowing out of the exterior heat exchanger and the refrigerant flowing out of the interior evaporator. The refrigeration cycle device further includes a gas-liquid separator that separates the refrigerant at a downstream side of the interior condenser into gas and liquid phase refrigerants. In a dehumidification heating mode of evaporating the refrigerant at the exterior heat exchanger, the liquid-phase refrigerant separated by the gas-liquid separator flows into the exterior heat exchanger. 1. A refrigeration cycle device comprising:a compressor adapted to compress and discharge a refrigerant;a refrigerant radiator that exchanges heat between a high-pressure refrigerant discharged from the compressor and ventilation air to be blown into a space to be air-conditioned, to heat the ventilation air;a first decompression device adapted to decompress the refrigerant flowing out of the refrigerant radiator;an exterior heat exchanger that exchanges heat between the refrigerant downstream of the first decompression device and outside air;a second decompression device adapted to decompress the refrigerant flowing out of the exterior heat exchanger;an evaporator that exchanges heat between a low-pressure refrigerant on a downstream side of the second decompression device and the ventilation air before being heated by the refrigerant radiator, to cool the ventilation air;an internal heat exchanger that exchanges heat between the ...

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Номер записи: 59
17-03-2022 дата публикации

ELECTROMAGNETIC PROPORTIONAL VALVE AND SYSTEM HAVING A PROPORTIONAL VALVE

Номер: US20220082310A1
Автор: MÖHRING Jens, Reimann Daniel, Schneider Toni
Принадлежит: Eco Holding 1 GmbH

The invention relates to an electromagnetic proportional valve, preferably for refrigerant, which has the following: an armature of an electromagnet which is arranged so as to be able to be moved axially between an idle position, an activation position and working positions and on which an activation element is arranged; a piston which is constructed as a hollow piston and which has at a first axial end region a first opening toward a supply of the expansion valve and at a second axial end region a second opening toward a pressure compensation space; and a blocking member which is constructed to close the second opening, wherein the piston is arranged so as to be able to be axially displaced and wherein the piston is constructed to block a fluid passage as a blocking element of a main valve device, wherein the fluid passage of the main valve device is blocked in the idle position of the armature, wherein the activation element is constructed to act in the activation position of the armature on the blocking member in such a manner that it releases the second opening at least in regions, and wherein the fluid passage of the main valve device is open in the working positions of the armature. The invention further relates to a system having such a proportional valve. 2. The electromagnetic proportional valve according to claim 1 ,wherein the movement of the armature in the working positions is transmitted directly to the piston.3. The electromagnetic proportional valve according to claim 1 , wherein an attachment is arranged at the second axial end region.5. The electromagnetic proportional valve according to claim 1 , wherein the proportional valve has a valve bush in which the supply and a discharge are arranged claim 1 , and wherein the piston is arranged in a hole in the valve bush.6. The electromagnetic proportional valve according to claim 5 , wherein the piston has a peripheral sealing face which with an inner face of the hole blocks the fluid passage of the main ...

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Номер записи: 60
28-02-2019 дата публикации

Steam turbine power generation system

Номер: US20190063264A1
Автор: Beom Joon LEE, Chul Woo Roh, Gil Bong LEE, Ho Sang Ra, Young Jin Baik
Принадлежит: Korea Institute of Energy Research KIER

In a steam turbine power generation system according to the present invention, a regenerator and an ejector are selectively operated according to outdoor air temperature so that the effects of the outdoor air temperature can be minimized and thus an increase in back pressure of a turbine is prevented and thus the operating efficiency of the steam turbine power generation system can be guaranteed. In addition, when the outdoor air temperature is lower than a set temperature, only a steam condenser and an air cooling condenser are used, and when the outdoor air temperature is equal to or higher than the set temperature, the regenerator and the ejector are operated so that the condensation efficiency of the air cooling condenser is improved and thus the cooling efficiency of the steam turbine power generation system can be maximized.

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Номер записи: 61
28-02-2019 дата публикации

EVAPORATOR AND CENTRIFUGAL CHILLER PROVIDED WITH THE SAME

Номер: US20190063801A1
Автор: MIYOSHI Naoya, OTANI Yuichi, WAJIMA Kazuki, YOSHII Taichi
Принадлежит: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.

The present invention maintains a compact evaporator size in a centrifugal chiller utilizing a low pressure refrigerant used at a maximum pressure of less than 0.2 MPaG while avoiding efficiency losses and equipment damage that result from carryover of liquid state refrigerant to the turbo compressor side. This evaporator is equipped with a pressure vessel into which a condensed refrigerant is introduced, a refrigerant inlet which is provided to the bottom portion of the pressure vessel, a refrigerant outlet which is provided to the top portion of the pressure vessel, a heat transfer pipe group which passes through the interior of the pressure vessel, circulates liquid to be chilled through the interior thereof, and exchanges heat between the liquid to be chilled and the refrigerant, and a demister which is disposed between the refrigerant outlet and the heat transfer pipe group in the interior of the pressure vessel and carries out vapor-liquid separation of the refrigerant, a dividing section (for example, a plurality of notches) being provided between the periphery of the demister and the inner peripheral surface of the pressure vessel. The dividing section is provided to a side of the demister along the lengthwise direction. 1. An evaporator comprising:a pressure container into which a condensed refrigerant is introduced;a refrigerant inlet which is provided in a lower portion of the pressure container;a refrigerant outlet which is provided in an upper portion of the pressure container,a group of heat transfer pipes which passes through an inside of the pressure container and circulates a cooling target liquid inside the group of heat transfer pipes to cause the cooling target liquid to be subjected to heat exchange with the refrigerant; anda demister which is installed between the refrigerant outlet and the group of heat transfer pipes inside the pressure container and performs gas-liquid separation of the refrigerant,wherein a separation portion is provided ...

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Номер записи: 62
08-03-2018 дата публикации

Ejector refrigeration circuit

Номер: US20180066872A1
Автор: Sascha Hellmann
Принадлежит: Carrier Corp

An ejector refrigeration circuit comprises: a high pressure ejector circuit comprising in the direction of flow of a circulating refrigerant: a heat rejecting heat exchanger/gas cooler having an inlet side and an outlet side; at least one ejector comprising a primary high pressure input port, a secondary low pressure input port, and an output port, the primary high pressure input port being fluidly connected to the outlet side of the heat rejecting heat exchanger/gas cooler; a receiver, having a liquid outlet, a gas outlet and an inlet, which is fluidly connected to the output port of the at least one ejector; at least one compressor having an inlet side and an outlet side, the inlet side of the at least one compressor being fluidly connected to gas outlet of the receiver.

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Номер записи: 63
08-03-2018 дата публикации

EXPANSION VALVE CONTROL

Номер: US20180066879A1
Автор: De Tathagata
Принадлежит:

A method for controlling a refrigeration system having a compressor, heat rejecting heat exchanger, expansion valve and heat absorbing heat exchanger circulating a refrigerant in series flow, the heat absorbing heat exchanger in thermal communication with working fluid, the method includes obtaining an expansion valve position set point; using a feedback control loop to generate a controlled expansion valve position; obtaining a rate of change of an operating parameter of the system; using the rate of change of the operating parameter to generate an adjustment; modifying the controlled expansion valve position using the adjustment; and controlling the expansion valve using the modified controlled expansion valve position. 1. A method for controlling a refrigeration system having a compressor , heat rejecting heat exchanger , expansion valve and heat absorbing heat exchanger circulating a refrigerant in series flow , the heat absorbing heat exchanger in thermal communication with working fluid , the method comprising:obtaining an expansion valve position set point;using a feedback control loop to generate a controlled expansion valve position; obtaining a rate of change of an operating parameter of the system;using the rate of change of the operating parameter to generate an adjustment; modifying the controlled expansion valve position using the adjustment; and controlling the expansion valve using the modified controlled expansion valve position.2. The method of wherein:the operating parameter comprises motor speed of the compressor.3. The method of wherein:the operating parameter comprises temperature of the working fluid entering the heat absorbing heat exchanger.4. The method of wherein:the operating parameter comprises a variable indexing value for the compressor.5. The method of wherein:the operating parameter comprises liquid level in the heat rejecting heat exchanger.6. A refrigeration system comprising:a compressor;a heat rejecting heat exchanger;an ...

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Номер записи: 64
09-03-2017 дата публикации

Vehicle hvac system with combination heat exchanger for heating and cooling vehicle interior

Номер: US20170067671A1
Автор: Manfred Koberstein, Timmy Van Evans
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

A vehicle having a heating, ventilation and air conditioning (HVAC) system for heating and cooling a passenger compartment is provided. The vehicle may be described as including a CO 2 loop positioned within an engine compartment, a coolant loop positioned at least partially within the passenger compartment, a first heat exchanger positioned within the engine compartment for transferring heat from a coolant within the coolant loop to a CO 2 within the CO 2 loop, a pump for moving the coolant within the coolant loop, a second heat exchanger within the coolant loop for heating or cooling an air temperature within the passenger compartment, and first and second valves for controlling movement of the coolant through the second heat exchanger and a heated coolant loop.

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Номер записи: 65
09-03-2017 дата публикации

EJECTOR AND HEAT PUMP APPARATUS

Номер: US20170067673A1
Автор: Kawano Bunki, Tamura Tomoichiro
Принадлежит:

An ejector includes an atomization mechanism that is disposed at an end of a first nozzle and that atomizes a working fluid in a liquid phase while maintaining the liquid phase. The atomization mechanism includes an orifice and a collision plate. When the collision plate is orthographically projected onto a projection plane, in a projection of the collision plate, at least one point on a contour of the collision surface is disposed closer to a reference point than a second reference line, which is a line including the collision end point and perpendicular to the first reference line. 1. An ejector comprising:a first nozzle to which a working fluid in a liquid phase is supplied;a second nozzle into which a working fluid in a vapor phase is sucked;an atomization mechanism that is disposed at an end of the first nozzle and that atomizes the working fluid in the liquid phase while maintaining the liquid phase; anda mixing space in which the atomized working fluid in the liquid phase generated in the atomization mechanism and the working fluid in the vapor phase sucked into the second nozzle are mixed to generate a merged fluid flow, wherein an orifice; and', 'a collision plate that is disposed on an extended line of a center axial line of the orifice, wherein', 'the collision plate has a collision surface that is inclined with respect to the center axial line of the orifice, and', 'when the collision plate is orthographically projected onto a projection plane, at least one point on a contour of the collision surface is disposed closer to a reference point than a second reference line in a projection of the collision plate, where, 'the atomization mechanism includesthe reference point is an intersection of the extended line of the center axial line of the orifice with the collision surface,a reference plane is a plane that includes the center axial line of the orifice and that perpendicularly intersects with the collision surface,a collision end point is an intersection ...

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Номер записи: 66
09-03-2017 дата публикации

Expansion device and refrigeration cycle apparatus

Номер: US20170067674A1
Автор: Koji Yamashita
Принадлежит: Asahi Glass Co Ltd, Mitsubishi Electric Corp

Provided is an expansion device configured to form a refrigerant circuit using refrigerant containing a substance having such a property as to cause a disproportionation reaction, the expansion device including: a valve body having a cylindrical shape; and an expansion unit including a valve seat, the expansion unit being configured to vary an opening area by insertion of the valve body into the valve seat through movement of the valve body in an axial direction thereof, in which: a distal end portion of the valve body to be inserted into the expansion unit is formed to have an angle larger than 0 from a direction perpendicular to the axial direction of the valve body.

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Номер записи: 67
11-03-2021 дата публикации

ELECTRONIC EXPANSION VALVE

Номер: US20210071921A1
Автор: Chen Liang, Liu Jingxi, Wang Yufeng
Принадлежит: EMERSON CLIMATE TECHNOLOGIES (SUZHOU) CO., LTD.

An electronic expansion valve is provided including: a valve body provided with a first port and a second port, a first cavity being defined in the valve body and being in fluid communication with the first port, the valve body also being provided with a valve port between the second port and the first cavity; a drive mechanism including a rotor having a rotor screw and a stator; a valve spindle assembly at least partially disposed in the valve body and being capable of operatively cooperating with the rotor screw for reciprocating motion to adjust the degree of opening of the valve port; and a second cavity isolated and sealed off from the first cavity, wherein a balancing passage is formed in the rotor screw and the valve spindle assembly to enable the second cavity to be in fluid communication with the second port via the balancing passage. 1. An electronic expansion valve , comprising:a valve body, wherein the valve body is provided with a first port for fluid to flow in or out and a second port for fluid to flow out or in; the valve body defines a first cavity therein which is in fluid communication with the first port; and the valve body is further provided with a valve port located between the second port and the first cavity, and the first cavity is selectively in fluid communication with the second port through the valve port;a driving mechanism which is fixed to the valve body and comprises a stator and a rotor, wherein the rotor is integrally connected with a rotor screw;a valve spindle assembly which is at least partially provided in the valve body, wherein the valve spindle assembly is capable of cooperatively cooperating with the rotor screw for reciprocating motion, thereby regulating an opening degree of the valve port; anda second cavity which is defined between the rotor and the valve spindle assembly, wherein the second cavity is isolated and sealed off from the first cavity,wherein a balance passage is provided between the rotor screw and the ...

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Номер записи: 68
15-03-2018 дата публикации

Energy Management For Refrigeration Systems

Номер: US20180073790A1
Автор: Beltran Franklin, BERTIE Keith, Fullenkamp Paul L., Wallace John, WALLIS FRANK S.
Принадлежит: EMERSON CLIMATE TECHNOLOGIES RETAIL SOLUTIONS, INC .

A system and method are provided including a system controller for a refrigeration or HVAC system having a compressor rack with a compressor and a condensing unit with a condenser fan. The system controller monitors and controls operation of the refrigeration or HVAC system. A rack controller monitors and controls operation of the compressor rack and determines compressor rack power consumption data. A condensing unit controller monitors and controls operation of the condensing unit and determines condensing unit power consumption data. The system controller receives the compressor rack power consumption data and the condensing unit power consumption data, determines a total power consumption of the refrigeration or HVAC system, determines a predicted power consumption or a benchmark power consumption for the refrigeration system, compares the total power consumption with the predicted power consumption or the benchmark power consumption, and generates an alert based on the comparison. 1. A system comprising:a system controller for a refrigeration or HVAC system having a compressor rack with at least one compressor and a condensing unit with at least one condenser fan, the system controller monitoring and controlling operation of the refrigeration or HVAC system;a rack controller in communication with the system controller, the rack controller monitoring and controlling operation of the compressor rack and determining compressor rack power consumption data; anda condensing unit controller in communication with the system controller, the condensing unit controller monitoring and controlling operation of the condensing unit and determining condensing unit power consumption data;wherein the system controller receives power consumption data from components of the refrigeration or HVAC system including at least the compressor rack power consumption data and the condensing unit power consumption data, determines a total power consumption of the refrigeration or HVAC ...

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Номер записи: 69
07-03-2019 дата публикации

REFRIGERATION SYSTEM WITH INTEGRATED AIR CONDITIONING BY A HIGH PRESSURE EXPANSION VALVE

Номер: US20190072299A1
Автор: Najafifard Fardis, Zha Shitong
Принадлежит:

A system includes a flash tank coupled to refrigeration cases, and the flash tank houses a first refrigerant. The system further includes a gas cooler to cool the first refrigerant, a heat exchanger coupled to an air conditioning system, and a first high pressure expansion valve coupled to the gas cooler. The first high pressure expansion valve reduces a pressure of the first refrigerant flowing from the gas cooler to the heat exchanger. The system includes a second high pressure expansion valve coupled to the gas cooler, which reduces a pressure of the first refrigerant flowing from the gas cooler to the flash tank. The heat exchanger is coupled to the first high pressure expansion valve, and the heat exchanger receives the first refrigerant from the high pressure expansion valve, receives a second refrigerant from an air conditioning system, and provides cooling to the second refrigerant using the first refrigerant. 1. A system , comprising;a flash tank coupled to one or more refrigeration cases, the flash tank configured to house a first refrigerant;a gas cooler configured to cool the first refrigerant to a first temperature;a heat exchanger coupled to an air conditioning system;a first expansion valve coupled to the gas cooler, the first expansion valve configured to reduce a pressure of the first refrigerant flowing from the gas cooler to the heat exchanger;a second expansion valve coupled to the gas cooler, the second expansion valve configured to reduce a pressure of the first refrigerant flowing from the gas cooler to the flash tank; receive the first refrigerant from the first expansion valve;', 'receive a second refrigerant from an air conditioning system, the second refrigerant associated with an air conditioning load; and', 'provide cooling to the second refrigerant using the first refrigerant;, 'wherein the heat exchanger is coupled to the first expansion valve, the heat exchanger configured toa sensor associated with one or more compressors, the sensor ...

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Номер записи: 70
16-03-2017 дата публикации

REFRIGERATION APPARATUS

Номер: US20170074551A1
Автор: Kurata Yusuke, MIHARA Kazuhiko
Принадлежит:

Refrigeration apparatus R that includes a refrigerant circuit composed of compressor , gas cooler , electric expansion valve , and evaporator includes: electric expansion valve ; tank ; split heat exchanger ; electric expansion valve ; electric expansion valve ; auxiliary circuit ; main circuit ; low-pressure sensor ; and control apparatus , in which control apparatus regulates the pressure of the refrigerant after the refrigerant flows out of tank but before flows into electric expansion valve to be a first constant pressure when the pressure detected by low-pressure sensor is smaller than a specified pressure, and regulates the pressure of the refrigerant to be a second constant pressure smaller than the first constant pressure when the pressure detected by low-pressure sensor is larger than the specified pressure. 1. A refrigeration apparatus that includes a refrigerant circuit composed of a compression section , a gas cooler , a main throttle section , and an evaporator , the refrigeration apparatus comprising:a pressure-regulation throttle section connected to the refrigerant circuit that is on a downstream side of the gas cooler and is on an upstream side of the main throttle section;a tank connected to the refrigerant circuit that is on a downstream side of the pressure-regulation throttle section and is on the upstream side of the main throttle section;a split heat exchanger provided in the refrigerant circuit that is on a downstream side of the tank and is on the upstream side of the main throttle section;a first auxiliary throttle section and a second auxiliary throttle section, the first auxiliary throttle section regulating pressure of refrigerant flowing out of a pipe provided in a first height of the tank, the second auxiliary throttle section regulating the pressure of the refrigerant flowing out of a pipe provided in a position lower than the first height;an auxiliary circuit that allows the refrigerant to flow through a first flow channel of the ...

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Номер записи: 71
16-03-2017 дата публикации

Surged Heat Pump Systems and Methods of Defrosting an Evaporator

Номер: US20170074565A1
Автор: Wightman David
Принадлежит:

Surged heat pump systems, devices, and methods are disclosed having refrigerant phase separators that generate at least one surge of vapor phase refrigerant into the inlet of an evaporator during an on cycle of the compressor. This surge of vapor phase refrigerant, having a higher temperature than the liquid phase refrigerant, increases the temperature of the evaporator inlet, thus reducing frost build up in relation to conventional refrigeration systems lacking a surged input of vapor phase refrigerant to the evaporator. The temperature of the vapor phase refrigerant is raised in relation to the liquid phase with heat from the liquid by the phase separation, not by the introduction of energy from another source. The surged heat pump systems may operate in highest heat transfer efficiency mode and/or in one or more higher temperature modes. 1. A method of defrosting an evaporator of a heat pump system during the transfer of heat to the evaporator and the transfer of heat to or from a conditioned space , comprising:at least partially separating liquid and vapor phases of a refrigerant;introducing at least one surge of the vapor phase of the refrigerant into an initial portion of the evaporator;introducing the liquid phase of the refrigerant into the evaporator;heating the initial portion of the evaporator in response to the at least one surge of the vapor phase of the refrigerant; andremoving frost from the evaporator.2. The method of claim 1 , further comprising heating the initial portion of the evaporator to within at most about 5° C. of a temperature of a first or a second external medium.3. The method of claim 1 , further comprising heating the initial portion of the evaporator to a temperature greater than a first or a second external medium.4. The method of claim 1 , further comprising heating the initial portion of the evaporator to a temperature greater than a dew point temperature of a first or a second external medium.5. The method of claim 1 , where a ...

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Номер записи: 72
16-03-2017 дата публикации

REFRIGERATION APPARATUS

Номер: US20170074569A1
Автор: Kurata Yusuke, MIHARA Kazuhiko
Принадлежит:

Refrigeration apparatus R that includes a refrigerant circuit composed of compression section , gas cooler , electric expansion valve , and evaporator includes: electric expansion valve ; tank ; split heat exchanger ; electric expansion valve ; electric expansion valves and ; auxiliary circuit , main circuit , and control apparatus , in which control apparatus regulates the gas cooler outlet temperature based on outside air temperature when the outside air temperature is higher than a specified temperature, and regulates the gas cooler outlet temperature based on saturation temperature ST of saturated liquid of the refrigerant after the refrigerant flows out of compressor but before flows into electric expansion valve , when the outside air temperature is lower than the specified temperature. 1. A refrigeration apparatus that includes a refrigerant circuit composed of a compression section , a gas cooler , a main throttle section , and an evaporator , the refrigeration apparatus comprising:a pressure-regulation throttle section connected to the refrigerant circuit that is on a downstream side of the gas cooler and is on an upstream side of the main throttle section;a tank connected to the refrigerant circuit that is on a downstream of the pressure-regulation throttle section and is on the upstream side of the main throttle section;a split heat exchanger provided in the refrigerant circuit that is on a downstream side of the tank and is on the upstream side of the main throttle section;a first auxiliary throttle section and a second auxiliary throttle section, the first auxiliary throttle section regulating a pressure of the refrigerant flowing out of a pipe provided in a first height of the tank, the second auxiliary throttle section regulating the pressure of the refrigerant flowing out of a pipe provided in a position lower than the first height;an auxiliary circuit that allows the refrigerant to flow through a first flow channel of the split heat exchanger and ...

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Номер записи: 73
22-03-2018 дата публикации

EJECTOR AND EJECTOR-TYPE REFRIGERATION CYCLE

Номер: US20180080482A1
Автор: Nishijima Haruyuki, Takano Yoshiaki, YOKOYAMA Yoshiyuki
Принадлежит:

An ejector includes a nozzle, a body including a refrigerant suction port and a pressure increasing portion, a passage forming member inserted into the nozzle, and an actuation device moving the passage forming member. A nozzle passage includes a smallest passage cross-sectional area portion, a convergent portion, and a divergent portion. The passage forming member includes a tip portion which changes the passage cross-sectional area at the smallest passage cross-sectional area portion when the actuation device moves the passage forming member. A positive displacement amount is defined as an amount of a displacement of the passage forming member when the passage forming member is moved so as to increase the passage cross-sectional area at the smallest passage cross-sectional area portion. The tip portion has a shape in which an increase rate of the smallest passage cross-sectional area portion is increased according to an increase of the positive displacement amount. 1. An ejector for a vapor-compression refrigeration cycle device , the ejector comprising:a nozzle that ejects a refrigerant;a swirl flow generation portion that generates a swirl flow about a center axis of the nozzle in the refrigerant flowing into the nozzle; a refrigerant suction port, the refrigerant being drawn from an outside through the refrigerant suction port due to a drawing effect of the ejected refrigerant ejected from the nozzle, and', 'a pressure increasing portion in which the ejected refrigerant and the drawn refrigerant drawn through the refrigerant suction port are mixed, a pressure of the mixed refrigerant being increased in the pressure increasing portion;, 'a body that includes'}a passage forming member that is inserted into a refrigerant passage defined in the nozzle; andan actuation device that moves the passage forming member, whereina nozzle passage is defined between an inner peripheral surface of the nozzle and an outer peripheral surface of the passage forming member, the ...

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Номер записи: 74
14-03-2019 дата публикации

EXPANSION VALVE

Номер: US20190078819A1
Автор: "OKeefe Jennifer", Arunasalam Parthiban, Fuller E. Nelson, Gurley Gengxun K., Ojeda Joe A., Yang Chen
Принадлежит: DUNAN MICROSTAQ, INC.

A spool assembly configured for use in a two-stage proportional control valve in a fluid system includes a substantially cylindrical sleeve having an axially extending sleeve bore extending from an open first end to an open second end. A spool includes a spool bore that extends from an open first axial end to a closed second axial end and is slidably mounted within the sleeve bore. The spool further includes a first circumferentially extending groove defining a fluid flow path, a second circumferentially extending groove formed near a first end thereof, a third circumferentially extending groove formed near the second axial end thereof, a circumferentially extending pressure groove formed therein between the second axial end and the third circumferentially extending groove, and first, second, and third transverse fluid passageways formed through a side wall of the spool. 1. A spool assembly configured for use in a two-stage proportional control valve in a fluid system comprising:a sleeve, wherein the sleeve is substantially cylindrical and includes an axially extending sleeve bore formed therein and extending from an open first end to an open second end of the sleeve; and a first circumferentially extending groove formed on an outside surface thereof and defining a fluid flow path;', 'a second circumferentially extending groove formed on an outside surface of the spool near the first axial end thereof;', 'a third circumferentially extending groove formed on an outside surface of the spool near the second axial end thereof;', 'a circumferentially extending pressure groove formed on an outside surface of the spool between the second axial end and the third circumferentially extending groove;', 'a first transverse fluid passageway formed through a side wall of the spool between the spool bore and the second circumferentially extending groove;', 'a second transverse fluid passageway formed through a side wall of the spool between the spool bore and the third ...

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Номер записи: 75
14-03-2019 дата публикации

AIR CONDITIONER WITH MULTIPLE EXPANSION DEVICES

Номер: US20190078823A1
Автор: HAVARD, Jewell Terry, JR. Harold Gene, Qu Yi
Принадлежит: Lennox Industries Inc.

In various implementations, an air conditioner may include more than one expansion device. Refrigerant flow through the expansion device(s) may be controlled based at least partially on an operational property of the air conditioner. 1. An air conditioner comprising:one or more compressors, having at least one of a low compressor setting, a first high compressor setting, and a second high compressor setting, wherein a volumetric flow rate of refrigerant exiting the one or more compressors is greater at the first high compressor setting and the second high compressor setting than the low compressor setting;a first expansion device fluidly coupled to the one or more compressors and configured to permit fluid to exit the first expansion device at a first flow rate;a second expansion device fluidly coupled to the one or more compressors and configured to permit fluid to exit the second expansion device at a second flow rate; measure a flow rate in the air conditioner;', 'compare the measured flow rate to a plurality of flow rate ranges stored in a memory, the plurality of flow rate ranges associated with the low, first high, and second high compressor settings;', 'allow refrigerant to flow through the first expansion device if the measured flow rate is associated with the low compressor setting;', 'allow refrigerant to flow through the second expansion device if the measured flow rate is associated with the first high compressor setting; and', 'allow refrigerant to flow through the first and second expansion devices if the measured flow rate is associated with the second high compressor setting., 'a controller coupled to a plurality of components of the air conditioner and configured to2. The air conditioner of claim 1 , wherein the first expansion device and the second expansion device are coupled in parallel.3. The air conditioner of claim 1 , wherein the controller comprises at least one of an operation module claim 1 , an expansion device management module claim 1 , ...

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Номер записи: 76
22-03-2018 дата публикации

HEAT PUMP

Номер: US20180080690A1
Автор: KIHARA Hirotoshi, OKADA Hideshi, Ota Keisuke, YASUDA Sadanori, YOSHIMURA Tomoys
Принадлежит: Yanmar Co., Ltd.

An exemplary heat pump includes: an accumulator that separates liquid refrigerant from gas refrigerant returning to a compressor; a refrigerant suction channel connecting the compressor to the accumulator; a refrigerant return channel that returns liquid refrigerant in the accumulator to the refrigerant suction channel; a first valve disposed on the refrigerant return channel; a temperature sensor that detects a temperature of refrigerant in the refrigerant suction channel; a second valve that reduces a pressure of a part of liquid refrigerant flowing between the first and second heat exchangers; a refrigerant evaporator that gasifies, by using waste heat of an engine, the liquid refrigerant whose pressure has been reduced; a gas refrigerant supply channel through which the gasified refrigerant is supplied to the accumulator; and a control device that, while the first valve is open, controls an opening of the second valve based on the temperature detected by the temperature sensor. 1. A heat pump comprising:a compressor configured to compress refrigerant and discharge the compressed refrigerant;an engine configured to drive the compressor;first and second heat exchangers configured such that refrigerant discharged from the compressor passes through the first and second heat exchangers;an accumulator configured to separate liquid refrigerant from gas refrigerant returning to the compressor through the first and second heat exchangers;a refrigerant suction channel connecting the compressor and the accumulator to each other;a refrigerant return channel connected to the refrigerant suction channel and configured to supply liquid refrigerant stored in a bottom portion of the accumulator to the refrigerant suction channel;a first valve disposed on the refrigerant return channel, the first valve being a shut-off valve or an expansion valve having an adjustable opening;a temperature sensor configured to detect a temperature of refrigerant in the refrigerant suction channel ...

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Номер записи: 77
24-03-2016 дата публикации

Control valve

Номер: US20160084549A1
Автор: Ryosuke Satake, Takeshi Kaneko, Takeshi Watanabe, Yasushi Omata
Принадлежит: TGK Co Ltd

A vibration-proof spring, which coaxially inserts a shaft, is provided in a body of a control valve. The vibration-proof spring includes a cylindrical spring body, spring parts, which are integrally formed with a side wall of the spring body and are supported by the spring body in a cantilevered manner, and bulging portions, which are formed, on surfaces of the spring parts facing the shaft, in a protruding manner. The spring body is formed as a cylindrical body such that a plate-like body, which is obtained by punching a metallic plate through a press-forming process, is bent along a longitudinal direction of the plate-like body. Also, the spring body is formed in such a manner as to have edge parts that protrude radially outward from at least one of ends of the cylindrical body in the direction of axis line.

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Номер записи: 78
23-03-2017 дата публикации

REFRIGERATION CYCLE DEVICE

Номер: US20170082333A1
Автор: Shimazu Yusuke
Принадлежит:

A refrigeration cycle apparatus operating with standard composition refrigerant that is a zeotropic refrigerant mixture containing at least first refrigerant and second refrigerant having a higher boiling point than the first refrigerant at the same pressure, the refrigeration cycle apparatus including a main circuit in which a compressor, a first heat exchanger, an expansion valve, and a second heat exchanger are sequentially connected, and a component separation circuit connected to the main circuit, the first refrigerant having a property of disproportionation, the component separation circuit being configured to separate and store, from the main circuit, mixed refrigerant containing the first refrigerant having a higher composition ratio than in the standard composition refrigerant in an operation of a separation-storage mode separating the components of the standard composition refrigerant. 1. A refrigeration cycle apparatus operating with standard composition refrigerant configured as a zeotropic refrigerant mixture containing at least first refrigerant and second refrigerant having a higher boiling point than the first refrigerant at a same pressure ,the refrigeration cycle apparatus comprising a main circuit in which a compressor, a first heat exchanger, an expansion valve, and a second heat exchanger are sequentially connected, anda component separation circuit connected to the main circuit,the first refrigerant having a property of disproportionation,the component separation circuit being configured to separate and store, from the main circuit, mixed refrigerant containing the first refrigerant having a higher composition ratio than in the standard composition refrigerant in an operation of a separation-storage mode separating components of the standard composition refrigerant,wherein the separation-storage mode is activated at least when the compressor has a high discharging temperature or a high discharging pressure.2. The refrigeration cycle apparatus ...

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Номер записи: 79
12-03-2020 дата публикации

MULTI-EVAPORATOR APPLIANCE HAVING A MULTI-DIRECTIONAL VALVE FOR DELIVERING REFRIGERANT TO THE EVAPORATORS

Номер: US20200080761A1
Автор: Avhale Amit A., Kulkarni Rishikesh Vinayak, Pickles E. Calvin, Sathyamurthi Vijaykumar, Zhang Yan
Принадлежит: WHIRLPOOL CORPORATION

A refrigerating appliance includes a refrigerant line having a compressor and a condenser. A thermal exchange media is delivered from the condenser and through the refrigerant line to at least a freezer evaporator of a plurality of evaporators, wherein the thermal exchange media leaving the freezer evaporator defines spent media that is returned to the compressor. A multi-directional outlet valve selectively delivers the thermal exchange media to the freezer evaporator, wherein the multi-directional outlet valve also selectively delivers the thermal exchange media to at least one secondary evaporator of the plurality of evaporators to define a partially-spent media that is delivered to the freezer evaporator. 1. A refrigerating appliance comprising:a refrigerant line having a compressor and a thermal exchange media;a plurality of heat exchangers that selectively receive the thermal exchange media, the plurality of heat exchangers including a freezer evaporator, a pantry evaporator and a refrigerator evaporator; anda multi-directional inlet valve that receives the thermal exchange media from at least one of the compressor, the pantry evaporator and the refrigerator evaporator, wherein the multi-directional inlet valve delivers the thermal exchange media to the freezer evaporator.2. The refrigerating appliance of claim 1 , further comprising:a multi-directional outlet valve that receives the thermal exchange media from the compressor and delivers the thermal exchange media to the multi-directional inlet valve.3. The refrigerating appliance of claim 2 , wherein the multi-directional outlet valve is selectively operable to also deliver the thermal exchange media to at least one of the pantry evaporator and the refrigerator evaporator and then to the multi-directional inlet valve.4. The refrigerating appliance of claim 3 , wherein the refrigerant line includes a first portion that extends from the multi-directional outlet valve and defines a plurality of refrigerant ...

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Номер записи: 80
25-03-2021 дата публикации

Mobile Air Conditioner

Номер: US20210088265A1
Автор: Lin Chen, LIU Henchen, YUE Bao
Принадлежит:

A mobile air conditioner, comprising: a first heat exchanger, having a first interface and a second interface for a refrigerant to enter and exit; a phase-change energy storage heat exchange device, including a second heat exchanger and a phase-change energy storage working medium, wherein the second heat exchanger and the phase-change energy storage working medium may exchange heat therebetween, and the second heat exchanger has a third interface and a fourth interface for the refrigerant to enter and exit; a first refrigerant pipeline, connected to the first interface and the third interface; and a second refrigerant pipeline, connected to the second interface and the fourth interface. 1. A mobile air conditioner , comprising:a first heat exchanger, having a first interface and a second interface for a refrigerant to enter and exit;a phase-change energy storage heat exchange device, including a second heat exchanger and a phase-change energy storage working medium, the second heat exchanger and the phase-change energy storage working medium may exchange heat therebetween, and the second heat exchanger has a third interface and a fourth interface for the refrigerant to enter and exit;a first refrigerant pipeline, connected to the first interface and the third interface; anda second refrigerant pipeline, connected to the second interface and the fourth interface.2. The mobile air conditioner according to claim 1 , whereinthe first refrigerant pipeline includes:a first communication branch, communicated with the first interface and the third interface, the first interface being communicated with the third interface when the first communication branch is opened.3. The mobile air conditioner according to claim 2 , whereinthe first communication branch is opened when a temperature of the refrigerant flowing out of the third interface is lower than a current room temperature and there is a temperature difference of at least 3° C. therebetween.4. The mobile air ...

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Номер записи: 81
31-03-2016 дата публикации

EJECTOR

Номер: US20160090995A1
Автор: Nishijima Haruyuki, Takano Yoshiaki, Yamada Etsuhisa
Принадлежит:

A swirling space in which a refrigerant is swirled into a gas-liquid mixing state includes an upstream swirling space in which the refrigerant flowing from an external is swirled, and a downstream swirling space in which the refrigerant flowing from the upstream swirling space is introduced into a nozzle passage while swirling. Further, a cross-sectional shape of an outlet part of the upstream swirling space is formed into an annular shape along an outer peripheral shape of the upstream swirling space. 1. An ejector comprising:a swirling space formation member having a swirling space in which a fluid is swirled;a nozzle that depressurizes and ejects the fluid flowing out of the swirling space; anda body including a fluid suction port that draws a fluid due to a suction action of the ejected fluid at high speed which is ejected from the nozzle, and a pressure increase part that mixes the ejected fluid with the suction fluid drawn from the fluid suction port and increases a pressure of the mixed fluid, whereinthe swirling space includes an upstream swirling space in which the fluid flowing from an external is swirled, and a downstream swirling space that introduces the fluid flowing out of the upstream swirling space into the nozzle with keeping the fluid swirling,the upstream swirling space and the downstream swirling space have respective rotating body shapes in which center axes are disposed coaxially with each other,the upstream swirling space has an outlet part through which the fluid outflow to the downstream swirling space, and the outlet part has an annular shape along an outer peripheral shape of the upstream swirling space in a cross sectional surface perpendicular to the center axis, andthe downstream swirling space has a circular shape in a cross sectional surface perpendicular to the center axis.2. An ejector for a vapor compression refrigeration cycle device , comprising:a body including a refrigerant inlet port, a swirling space in which a refrigerant ...

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Номер записи: 82
21-03-2019 дата публикации

HIGH-TEMPERATURE AIR CONDITIONING DEVICE

Номер: US20190086124A1
Автор: LI Hongbo, Liu Hua, SUN Dongjun, Wang Sheng, Zhang Zhiping
Принадлежит:

Disclosed is a high-temperature air conditioning device. By changing an arrangement mode of throttle valves, a pressure of refrigerant inside a low-pressure pipeline is made to be lower than a pressure of refrigerant inside a medium-pressure pipeline, thus ensuring that the refrigerant, used for cooling components, inside the low-pressure pipeline has a low pressure, thereby solving a problem in the prior art that a frequency converter, a motor and lubricating oil are not cooled sufficiently or cannot be cooled due to excessively high evaporation pressure. 1. A high-temperature air conditioning device , comprising:a compressor, a condenser, a throttling and cooling pipeline assembly, and an evaporator, which are connected in sequence to form a cycle; wherein, the throttling and cooling pipeline assembly includes throttle valves, a medium-pressure pipeline, a low-pressure pipeline, and a booster pipeline; the throttle valves are configured to enable a pressure of refrigerant in the low-pressure pipeline to be lower than a pressure of refrigerant in the medium-pressure pipeline; the medium-pressure pipeline and the low-pressure pipeline are connected in parallel; components to be cooled are disposed in the low-pressure pipeline; an outlet of the low-pressure pipeline is connected to the booster pipeline, and an outlet of the booster pipeline is connected to the evaporator; and a boosting device is arranged in the booster pipeline.2. The high-temperature air conditioning device according to claim 1 , wherein claim 1 , the medium-pressure pipeline and the low-pressure pipeline are connected in parallel between the condenser and the evaporator;the throttle valves include a first throttle valve disposed in the medium-pressure pipeline, and a second throttle valve disposed in the low-pressure pipeline; and a pressure regulation capacity of the second throttle valve is greater than a pressure regulation capacity of the first throttle valve.3. The high-temperature air ...

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Номер записи: 83
21-03-2019 дата публикации

REFRIGERATION CIRCUIT

Номер: US20190086130A1
Автор: Hellmann Sascha
Принадлежит:

Refrigeration circuit () comprising in the direction of flow of a circulating refrigerant: a compressor unit () comprising at least one compressor (); a heat rejecting heat exchanger/gas cooler (); a high pressure expansion device (); a receiver (); an expansion device (); an evaporator (); and a low pressure gas-liquid-separation unit comprising at least two collecting containers () which are configured for alternately separating a liquid phase portion from the refrigerant leaving the evaporator () and delivering the separated liquid refrigerant back to the receiver (). 111a;c. Refrigeration circuit () comprising in the direction of flow of a circulating refrigerant:{'b': 2', '2', '2', '2, 'i': a,', 'b,', 'c, 'a compressor unit () comprising at least one compressor ();'}{'b': '4', 'a heat rejecting heat exchanger/gas cooler ();'}{'b': 6', '50, 'a high pressure expansion device (; );'}{'b': '8', 'a receiver ();'}{'b': 10', '10, 'an expansion device (), in particular a normal cooling temperature expansion device ();'}{'b': 12', '12, 'an evaporator (), in particular a normal cooling temperature evaporator (); and'}{'b': 32', '34, 'a low pressure gas-liquid-separation unit comprising at least two collecting containers (, ); wherein'}{'b': 13', '12', '32', '32, 'i': 'a', 'an outlet () of the evaporator () is fluidly connected to an inlet () of a first collecting container ();'}{'b': 3', '2', '32', '32, 'i': 'b', 'an inlet side () of the compressor unit () is fluidly connected to a gas outlet () of the first collecting container ();'}{'b': 32', '32', '36', '34', '34, 'i': c', 'a, 'a liquid outlet () of the first collecting container () is fluidly connected via an inlet valve () to an inlet () of the second collecting container (); and'}{'b': 34', '34', '38', '8, 'i': 'c', 'a liquid outlet () of the second collecting container () is fluidly connected via an outlet valve () to the receiver ().'}2113488323434a;c. Refrigeration circuit () according to claim 1 , wherein the ...

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Номер записи: 84
30-03-2017 дата публикации

ENERGY EFFICIENCY OF AIR CONDITIONING SYSTEM BY USING DUAL SUCTION COMPRESSOR

Номер: US20170089613A1
Автор: CUR NIHAT O., Gomes Alberto, Kuehl Steven J., Wu Guolian
Принадлежит:

A method for selectively transferring latent and sensible heat from air in a cooling system of a building structure interior volume that includes at least the steps of: (1) providing a building structure air conditioning system that provides cooling to at least a portion of the interior volume of a building structure and (2) adjusting a ratio of a time coolant flows through the first evaporator to a time coolant flows through the second evaporator such that coolant flows through the first evaporator for more time than the second evaporator when more latent heat is removed from the air and more coolant flows through the second evaporator for more time than the first evaporator when more sensible heat is removed from the air. 1. A method for selectively transferring latent and sensible heat from air in a cooling system of a building structure interior volume , the method comprising the steps of:providing a building structure air conditioning system that provides cooling to at least a portion of the interior volume of a building structure wherein the air conditioning system comprises:a compressor having a suction valve or suction valves;a condenser having a condenser fan associated with the condenser that moves air to cool the condenser;at least two evaporators wherein a first evaporator operates at a first evaporator pressure and a second evaporator operates at a second evaporator pressure that is different than the first evaporator pressure;at least a first throttling device in coolant fluid communication with the first evaporator and a second throttling device associated with the second evaporator and wherein the first throttling device and the second throttling device have different throttling characteristics with the first throttling device being less restrictive than a second throttling device; anda plurality of refrigerant conduits containing refrigerant fluid fluidly connecting the compressor, condenser, the first throttling device, the second throttling device ...

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Номер записи: 85
30-03-2017 дата публикации

Refrigeration device

Номер: US20170089614A1
Автор: Junichi Suda, Kazuhiro OMOTE, Kosuke MIYAGI, Masataka HAYAKAWA, Yusuke Hiji
Принадлежит: Sanden Holdings Corp

There is disclosed a refrigeration device in which a cooling capability and efficiency can be improved by controlling a high pressure side pressure of a low stage side refrigerant circuit into an optimum value. A refrigeration device 1 includes a high stage side refrigerant circuit 4 , first and second low stage side refrigerant circuits 6 A and 6 B, and cascade heat exchangers 43 A and 43 B to evaporate a refrigerant of the high stage side refrigerant circuit 4 , thereby cooling high pressure side refrigerants of the low stage side refrigerant circuits 6 A and 6 B, and carbon dioxide is charged as the refrigerant in each of the refrigerant circuits 4, 6 A and 6 B, and in the device, there are disposed pressure adjusting expansion valves 31 to adjust high pressure side pressures of the low stage side refrigerant circuits 6 A and 6 B.

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Номер записи: 86
30-03-2017 дата публикации

Refrigeration cycle apparatus

Номер: US20170089616A1
Автор: Koji Yamashita
Принадлежит: Asahi Glass Co Ltd, Mitsubishi Electric Corp

A refrigeration cycle is filled with a single component refrigerant of a substance having a property of undergoing disproportionation reaction or a mixed refrigerant containing a substance having a property of undergoing disproportionation reaction and a refrigerating machine oil miscible with the refrigerant.

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Номер записи: 87
05-04-2018 дата публикации

PARALLEL CAPILLARY EXPANSION TUBE SYSTEMS AND METHODS

Номер: US20180094840A1
Автор: Caskey Curtis W., Karkhanis Rajiv K., Kester Douglas A., Mislak Nicholas P., Spitzer James K., Yelamanchili Chandra
Принадлежит:

A cooling system includes a subcooling heat exchange assembly, which controls magnitude of subcooling of refrigerant circulated through the cooling system. The subcooling heat exchange assembly includes a first fluid line fluidly coupled to an output of a condenser to enable a first portion of the refrigerant output from the condenser to flow through the first fluid line; a second fluid line fluidly coupled to the output of the condenser to enable a second portion of the refrigerant output from the condenser to flow through the second fluid line; and an expansion valve disposed along the second fluid line, in which the expansion valve exerts a first pressure drop on the second portion of the refrigerant that facilitates extracting heat from the first portion of the refrigerant flowing through the first fluid line using the second portion of the refrigerant flowing through the second fluid line when valve position of the expansion valve is greater than a threshold position. Additionally the cooling system includes a plurality of capillary expansion tubes fluidly coupled in parallel to an output of the first fluid line and that to exert a second pressure drop on the refrigerant circulated through the cooling system. 1. A cooling system , comprising: a first fluid line configured to be fluidly coupled to an output of a condenser to enable a first portion of the refrigerant output from the condenser to flow through the first fluid line;', 'a second fluid line configured to be fluidly coupled to the output of the condenser to enable a second portion of the refrigerant output from the condenser to flow through the second fluid line; and', 'an expansion valve disposed along the second fluid line, wherein the expansion valve is configured to exert a first pressure drop on the second portion of the refrigerant that facilitates extracting heat from the first portion of the refrigerant flowing through the first fluid line using the second portion of the refrigerant flowing ...

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Номер записи: 88
05-04-2018 дата публикации

PARALLEL CAPILLARY EXPANSION TUBE SYSTEMS AND METHODS

Номер: US20180094841A1
Автор: Caskey Curtis W., Karkhanis Rajiv K., Kester Douglas A., Mislak Nicholas P., Spitzer James K., Yelamanchili Chandra
Принадлежит:

A cooling system includes an expansion valve configured to exert a first pressure drop on refrigerant circulated through the cooling system. The cooling system also includes a plurality of capillary expansion tubes fluidly coupled in parallel to an output of the expansion valve and configured to exert a second pressure drop on the refrigerant circulated through the cooling system. The cooling system also includes a controller communicatively coupled to the expansion valve, wherein the controller is configured to control magnitude of the first pressure drop by instructing the expansion valve to adjust the valve position based at least in part on refrigerant mass flow expected to be supplied to the expansion valve to facilitate substantially uniformly distributing the refrigerant mass flow between each of the plurality capillary expansion tubes. 1. A cooling system , comprising:an expansion valve configured to exert a first pressure drop on refrigerant circulated through the cooling system;a plurality of capillary expansion tubes fluidly coupled in parallel to an output of the expansion valve and configured to exert a second pressure drop on the refrigerant circulated through the cooling system; anda controller communicatively coupled to the expansion valve, wherein the controller is configured to control magnitude of the first pressure drop by instructing the expansion valve to adjust the valve position based at least in part on refrigerant mass flow expected to be supplied to the expansion valve to facilitate substantially uniformly distributing the refrigerant mass flow between each of the plurality capillary expansion tubes.2. The cooling system of claim 1 , wherein the expansion valve comprises a first open cross-sectional area when the expansion valve is at a fully open position that is approximately equal to a second open cross-sectional area of a conduit to be fluidly coupled to an input of the expansion valve.3. The cooling system of claim 1 , comprising an ...

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Номер записи: 89
28-03-2019 дата публикации

Test chamber

Номер: US20190093926A1
Автор: Christian Haack, Gerald Klee
Принадлежит: WEISS UMWELTTECHNIK GMBH

A test chamber ( 10 ) for conditioning air has a test space ( 12 ), and a temperature control device ( 11 ) for controlling the temperature of the test space and allowing a temperature in a range of −80° C. to +180° C., preferably −100° C. to +200° C., to be established within the test space, the temperature control device having a cooling device ( 16 ) with a cooling circuit ( 17 ), a heat exchanger ( 18 ), a compressor ( 19 ), a condenser ( 20 ), and an expansion element ( 21 ), wherein the refrigerant is a nearly azeotropic and/or zeotropic refrigerant mixture of a mass percentage of carbon dioxide and a mass percentage of at least one of the components ethane, ethene, hexafluoroethane, pentafluoroethane, monofluoroethane, 1,1-difluoroethene, fluoromethane and/or propane and/or xenon, the refrigerant having a relative CO 2 equivalent of <3000, preferably <500, in particular preferably <10, with respect to 20 years.

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Номер записи: 90
06-04-2017 дата публикации

AIR-CONDITIONING APPARATUS

Номер: US20170097177A1
Автор: Azuma Koji, HATANAKA Kensaku, Koge Hirofumi, MORIMOTO Osamu, Shinozaki Kazuyoshi
Принадлежит:

An air-conditioning apparatus includes at least one system including a heat-medium conveying device, a heat-medium flow regulator, and a heat-medium flow control device, as a heat medium system capable of regulating a flow rate of a heat medium supplied to a heat source device-side heat exchanger exchanging heat between refrigerant and the heat medium. The air-conditioning apparatus switches each of a plurality of use-side heat exchangers to a cooling operation or a heating operation in accordance with a control command to perform a cooling and heating simultaneous operation. The refrigerant is caused to flow through the heat source device-side heat exchanger depending on a ratio of a total cooling capacity and a total heating capacity of the plurality of use-side heat exchangers. The heat-medium flow control device controls the flow rate of the heat medium supplied to the heat source device-side heat exchanger based on a difference between the total cooling capacity and the total heating capacity of the plurality of use-side heat exchangers and a total operation capacity of the heat source device-side heat exchanger. 1. An air-conditioning apparatus , comprising:a compressor configured to compress and discharge refrigerant;a heat source device-side heat exchanger configured to exchange heat between the refrigerant and a heat medium different from the refrigerant;a plurality of use-side heat exchangers configured to exchange heat between the refrigerant and a use-side medium around the plurality of use-side heat exchangers;a relay device provided between the heat source device-side heat exchanger and the plurality of use-side heat exchangers and configured to switch at least one of the plurality of use-side heat exchangers to a cooling operation and switch others of the plurality of use-side heat exchangers to a heating operation; andat least one system including a heat-medium conveying device, a heat-medium flow regulator, and a heat-medium flow control device, as ...

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Номер записи: 91
13-04-2017 дата публикации

Chiller Compressor Rolling Bearings with Squeeze Film Dampers

Номер: US20170102003A1
Автор: Sishtla Vishnu M.
Принадлежит: CARRIER CORPORATION

A centrifugal compressor () comprises: a case () having a suction port () and a discharge port (); an impeller () mounted for rotation about an impeller axis () by a plurality of bearings (); and a motor () coupled to the impeller to drive rotation of the impeller about the impeller axis. The bearings each comprise: an inner race (); an outer race (); and rolling elements () between the inner race and outer race. The outer race of each bearing is mounted for radial displacement relative to the case and is surrounded by an associated chamber (); and the chambers are coupled to a port () on the compressor. 1. (canceled)2. The system of wherein:{'b': '166', 'the impeller is coaxial with the motor and mounted to a shaft () of the rotor for said rotation about the impeller axis.'}3. The system of wherein:the centrifugal compressor is an in-line compressor with a first said impeller and a second said impeller; anda first said bearing is between the motor and the first impeller and second impeller.4. The system of wherein: a portion of the case;', 'the outer race; and', {'b': 226', '228, 'a pair of o-rings (, ).'}], 'each of the chambers is bounded by5. The system of further comprising:{'b': '250', 'at least one orifice () between the port and the chambers.'}6. The system of wherein each of the bearings further comprises:{'b': '240', 'an anti-rotation means () coupling the outer race to the case.'}7. The system of further comprising:{'b': '104', 'a drain port () coupled to the chambers.'}8. (canceled)920. A refrigeration system () comprising:{'b': '22', 'claim-text': [{'b': 160', '24', '26, 'a case () having a suction port () and a discharge port ();'}, {'b': 162', '164', '500', '80', '82, 'claim-text': [{'b': '200', 'an inner race ();'}, {'b': '202', 'an outer race (); and'}, {'b': '204', 'rolling elements () between the inner race and outer race; and'}], 'an impeller (, ) mounted for rotation about an impeller axis () by a plurality of bearings (, ), the bearings each ...

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Номер записи: 92
13-04-2017 дата публикации

Ejector Cycle

Номер: US20170102170A1
Автор: Cogswell Frederick J., Verma Parmesh, Wang Jinliang
Принадлежит: CARRIER CORPORATION

A system has a first compressor and a second compressor. A heat rejection heat exchanger is coupled to the first and second compressors to receive refrigerant compressed by the compressors. The system includes an economizer for receiving refrigerant from the heat rejection heat exchanger and reducing an enthalpy of a first portion of the received refrigerant while increasing an enthalpy of a second portion. The second portion is returned to the compressor. The ejector has a primary inlet coupled to the means to receive a first flow of the reduced enthalpy refrigerant. The ejector has a secondary inlet and an outlet. The outlet is coupled to the first compressor to return refrigerant to the first compressor. A first heat absorption heat exchanger is coupled to the economizer to receive a second flow of the reduced enthalpy refrigerant and is upstream of the secondary inlet of the ejector. A second heat absorption heat exchanger is between the outlet of the ejector and the first compressor. 1. A system comprising:a first compressor and a second compressor;a heat rejection heat exchanger coupled to the first and second compressors to receive refrigerant compressed by the compressors;means for receiving refrigerant from the heat rejection heat exchanger and reducing an enthalpy of a first portion of the received refrigerant while increasing an enthalpy of a second portion, said second portion being returned to the second compressor; a primary inlet coupled to the means to receive a first flow of the reduced enthalpy refrigerant;', 'a secondary inlet; and', 'an outlet coupled to the first compressor to return refrigerant to the first compressor;, 'an ejector havinga first heat absorption heat exchanger coupled to the means to receive a second flow of the reduced enthalpy refrigerant and upstream of the secondary inlet of the ejector; anda second heat absorption heat exchanger between the outlet of the ejector and the first compressor.2. The system of further comprising: ...

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Номер записи: 93
13-04-2017 дата публикации

Managing High Pressure Events in Air Conditioners

Номер: US20170102173A1
Автор: GOEL Rakesh, Pate Thomas
Принадлежит: Lennox Industries Inc.

In various implementations, an air conditioner may include one or more compressors, more than one expansion device, and/or a microchannel condenser. High pressure events may occur during operation of the air conditioner and may be identified. When a high pressure event is identified a bypass operation may be allowed. 1. An air conditioner having a circulating refrigerant , the air conditioner comprising:a microchannel condenser;a compressor;a primary expansion device;a bypass line having a secondary expansion device; anda controller configured to detect high pressure events at an input to the microchannel condenser and to control refrigerant flow through the bypass line, wherein upon detection of a high pressure event at an input to the microchannel condenser the controller directs at least a portion of the refrigerant into the bypass line and secondary expansion device thereby reducing the pressure at the input to the microchannel condenser.2. The air conditioner of claim 1 , further operable to restrict operation of the compressor upon detection of the high pressure event.3. The air conditioner of claim 1 , wherein the secondary expansion device comprises at least one of an orifice claim 1 , a line comprising a smaller cross-sectional area than a cross-sectional area of a line coupled to another component of the air conditioner claim 1 , a thermal expansion valve claim 1 , an electronic expansion device claim 1 , or a bypass thermal expansion valve.4. The air conditioner of claim 1 , wherein the air conditioner comprises more than one compressor claim 1 , and wherein at least a first compressor and at least one second compressor comprises a tandem compressor assembly.5. The air conditioner of claim 1 , wherein at least one of the primary expansion device or the secondary expansion device comprises a thermal expansion valve claim 1 , and wherein the thermal expansion valve comprises:a bulb, and wherein a temperature of the bulb at least partially controls an amount ...

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Номер записи: 94
19-04-2018 дата публикации

Vehicle air conditioner

Номер: US20180105016A1
Автор: Hiroshi Hamamoto, Katsuyoshi Wakano, Kohei Fukawatase, Kou Komori, Subaru Matsumoto, Yoshihiko Otake
Принадлежит: Japan Climate Systems Corp, Panasonic Corp

A heat pump device includes an air conditioning control device configured to switch the heat pump device among a plurality of operation modes including an air-heating operation mode in which an indoor heat exchanger serves as a radiator and an outdoor heat exchanger serves as a heat absorber, and an air-cooling operation mode in which the indoor heat exchanger serves as a heat absorber and the outdoor heat exchanger serves as a radiator. The air conditioning control device switch a refrigerant pipe such that refrigerant is, in the air-cooling operation mode, supplied to part of the outdoor heat exchanger serving as a refrigerant inlet in the air-heating operation mode.

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Номер записи: 95
19-04-2018 дата публикации

REFRIGERATING APPARATUS

Номер: US20180106514A1
Автор: Ikeda Takashi, Ishikawa Tomotaka, Nomoto So, Sugimoto Takeshi
Принадлежит:

A refrigerating apparatus includes a high-temperature side circuit and a low-temperature side circuit connected to each other via a cascade condenser, a low-temperature side second flow control valve that turns a refrigerant, passing through a liquid pipe connecting between a cooling unit and other circuit parts in a low-temperature side circuit b, into a gas-liquid two-phase refrigerant, and an expansion tank connected to the suction side of a low-temperature circuit compressor via a tank electromagnetic valve. 1. A refrigerating apparatus comprising:{'sub': '2', 'a circuit including a heat source circuit including a two-stage compressor having a lower-side compressor and a higher-side compressor, a gas cooler, and an intermediate cooler, and a cooling unit including a first flow control valve and an evaporator connected in series to each other, the circuit being configured by connecting the two-stage compressor and the cooling unit via a liquid pipe for supplying a refrigerant from the heat source circuit to the cooling unit and a gas pipe for supplying the refrigerant from the cooling unit to the heat source circuit, the circuit being configured for a COrefrigerant to circulate therein;'}a branched pipe branched from a position between the gas cooler and the intermediate cooler so as to allow the refrigerant to flow into the intermediate cooler;a flow control valve for intermediate cooling provided in the branched pipe;a connection circuit connecting a discharge side of the lower-side compressor and a suction side of the higher-side compressor to the intermediate cooler;a second flow control valve that depressurizes the refrigerant flowing out of the intermediate cooler in the circuit and supply the refrigerant to the liquid pipe in a gas-liquid two-phase state; andan expansion tank connected to a suction side of the lower-side compressor in the circuit via a tank electromagnetic valve and configured to suppress an increase in pressure in the circuit during a non ...

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Номер записи: 96
30-04-2015 дата публикации

ELECTRONIC EXPANSION VALVE

Номер: US20150114495A1
Автор: Wei Xianrang, YUAN Ze, Zhan Caiyi
Принадлежит: Zhejiang Sanhua Co., Ltd.

An electronic expansion valve is provided, wherein a piston component and a valve needle component are located at the same side of a valve core seat. When refrigerant flows forwards, the piston component closes the bypass through hole, the refrigerant flows to a side of the vertical connecting pipe via the valve core valve port, and the valve needle component moves in the axial direction to regulate an opening of the valve core valve port. When the refrigerant flows reversely, the piston component moves upwards in the axial direction to open the bypass through hole, and the refrigerant flows to a side of the transverse connecting pipe via the bypass through hole. The electronic expansion valve ensures that the valve needle component seals the valve core valve port easily in a high pressure state when the refrigerant flows forwards, and reduces axial and radial dimensions of the valve seat 1. An electronic expansion valve , comprising a valve seat , the valve seat being provided with a valve cavity , a valve core seat being fixed in the valve cavity , and the valve core seat being provided with a valve core valve port and a bypass through hole; the electronic expansion valve further comprising a valve needle component which is movable in an axial direction to cooperate with the valve core valve port and a piston component which is movable in the axial direction to open and close the bypass through hole; and the electronic expansion valve further comprising a transverse connecting pipe functioning as an inlet connecting pipe and a vertical connecting pipe functioning as an outlet connecting pipe; wherein ,the piston component and the valve needle component are located at the same side of the valve core seat, and in a case that refrigerant flows forwards, the piston component closes the bypass through hole, the refrigerant flows to a side of the vertical connecting pipe via the valve core valve port, and the valve needle component moves in the axial direction to ...

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Номер записи: 97
20-04-2017 дата публикации

COOLING FLUID APPLICATION AND CIRCULATION SYSTEM FOR DIRECT EVAPORATIVE COOLER

Номер: US20170108251A1
Автор: Dinnage Paul A.
Принадлежит:

An evaporative cooling system includes a heat exchange medium for receiving cooling fluid to cool supply air flowing past the heat exchange medium, a cooling fluid source for supplying fresh cooling fluid, a supply line communicating with the cooling fluid source for supplying the cooling fluid to the heat exchange medium, a return reservoir for collecting the cooling fluid supplied to the heat exchange medium, and a pump provided in the supply line for recirculating the cooling fluid collected in the reservoir into the supply line so as to provide recirculated cooling fluid along with fresh cooling fluid to the heat exchange medium. The pump can be in the form of an eductor. 1. An evaporative cooling system comprising:a heat exchange medium for receiving cooling fluid to cool supply air flowing past the heat exchange medium;a cooling fluid source for supplying fresh cooling fluid;a supply line communicating with the cooling fluid source for supplying the cooling fluid to the heat exchange medium;a return reservoir for collecting the cooling fluid supplied to the heat exchange medium; anda pump provided in the supply line for recirculating the cooling fluid collected in the reservoir into the supply line so as to provide recirculated cooling fluid along with fresh cooling fluid to the heat exchange medium.2. The evaporative cooling system according to claim 1 , wherein the heat exchange medium is provided in a direct evaporative cooling unit.3. The evaporative cooling system according to claim 1 , further comprising a controller for controlling supply from the cooling fluid source.4. The evaporative cooling system according to claim 3 , further comprising a sensor for sensing overflow from the return reservoir and providing a signal to the controller regarding the overflow.5. The evaporative cooling system according to claim 4 , wherein the sensor senses a magnitude of the overflow from the return reservoir and provides the signal to the controller representing the ...

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Номер записи: 98
20-04-2017 дата публикации

Ejectors and Methods of Use

Номер: US20170108256A1
Автор: Burns Larry D., Lifson Alexander, Verma Parmesh
Принадлежит: CARRIER CORPORATION

An ejector has: a motive flow inlet (); a secondary flow inlet (); an outlet (); a motive flow nozzle () having an outlet (); a primary flowpath from the motive flow inlet through the motive flow nozzle to the ejector outlet; a secondary flowpath from the secondary flow inlet to the ejector outlet, merging with the primary flowpath at the motive nozzle outlet; a control needle () shiftable along a range of motion between a first condition and a second condition and seated against the motive nozzle in the second condition. The needle comprises: a main shaft (); a tip (); a first portion () converging toward the tip; and a shoulder portion () between the first portion and the main shaft and seated against the motive nozzle in the second condition and converging toward the tip at a greater angle () than an angle () of the first portion. 2. The ejector of wherein:{'sub': '1', 'the shoulder portion angle (θ) is 15° to 75°; and'}{'sub': '2', 'the first portion angle (θ) is 5° to 60°.'}3. The ejector of wherein:{'sub': '1-2', 'the shoulder portion angle (θ) is 75° to 115°; and'}{'sub': '2-2', 'the first portion angle (θ) is 5° to 60°.'}4. The ejector of wherein:{'sub': f', '2, 'the shoulder portion angle (O) is 10° to 30° greater than the first portion angle (θ).'}5. The ejector of wherein:{'sub': 1-2', '2-2, 'the shoulder portion angle (θ) is 5° to 80° greater than the first portion angle (θ).'}6. The ejector of wherein:a throat of the motive nozzle has clearance relative to the needle in the second condition.7. The ejector of wherein:the motive nozzle is made of stainless steel; andthe needle is made of stainless steel.8. The ejector of wherein:{'b': '330', 'the needle comprises a transition section () between the first portion and the second portion and being closer to cylindrical than the first portion and the second portion.'}9. The ejector of wherein:the motive nozzle is a convergent-divergent nozzle.10. The ejector of further comprising:a mixer comprising a ...

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Номер записи: 99
02-04-2020 дата публикации

A VAPOUR COMPRESSION SYSTEM WITH A SUCTION LINE LIQUID SEPARATOR

Номер: US20200103151A1
Автор: Larsen Lars Finn Sloth, Madsen Kenneth Bank, Prins Jan
Принадлежит:

A method for controlling a vapour compression system () is disclosed. The vapour compression system () comprises an ejector () and a liquid separating device () arranged in a suction line. A liquid level sensor () is arranged in the liquid separating device (). A liquid level in the liquid separating device () is monitored by means of the liquid level sensor (). In the case that the liquid level in the liquid separating device () is above a predefined threshold level, a control parameter of the vapour compression system () is adjusted in order to increase a flow rate of refrigerant from the liquid separating device () to the secondary inlet () of the ejector () and/or decrease a flow rate of liquid refrigerant from the evaporator(s) () to the liquid separating device (). 17-. (canceled)8. A method for controlling a vapour compression system , the vapour compression system comprising a compressor unit , a heat rejecting heat exchanger , an ejector , a receiver , at least one expansion device and at least one evaporator arranged in a refrigerant path , the vapour compression system further comprising a liquid separating device arranged in a suction line of the vapour compression system and a liquid level sensor arranged in the liquid separating device , the liquid separating device comprising a gaseous outlet connected to the inlet of the compressor unit and a liquid outlet connected to a secondary inlet of the ejector , the method comprising the steps of:monitoring a liquid level in the liquid separating device by means of the liquid level sensor, andin the case that the liquid level in the liquid separating device is above a predefined threshold level, adjusting a control parameter of the vapour compression system in order to decrease a flow rate of liquid refrigerant from the evaporator(s) to the liquid separating device by, for at least some of the evaporator(s), selecting a positive setpoint for a superheat value and/or reducing a maximum allowable opening degree ...

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Номер записи: 100