A process for monitoring the coolant level in a cooling system

A SYSTEM FOR EQUALISING LUBRICATING OIL LEVELS IN PARALLEL CONNECTED COMPRESSORS

Liquid ring pump control

Compressor, refrigerant compressing apparatus, and refrigerating apparatus

METHOD FOR REGULATING THE LIQUID INJECTION OF A COMPRESSOR, A LIQUID-INJECTED COMPRESSOR AND A LIQUID-INJECTED COMPRESSOR ELEMENT

Method for controlling the liquid injection of a compressor device (1), whereby this compressor device comprises at least one compressor element (2), whereby the compressor element (2) comprises a housing (3) that comprises a compression space (4) in which at least one rotor (7) is rotatably affixed by means of bearings (8), whereby liquid is injected into the compressor element (2), characterised in that the method comprises the step of providing two independent separated liquid supplies to the compressor element (2), whereby one liquid supply is injected into the compression space (4) and the other liquid supply is injected at the location of the bearings (8).

Compressor assembly with liquid sensor

一种压缩机，该压缩机可以包括壳体、压缩机构、第一温度传感器、第二温度传感器以及控制模块。壳体可以限定润滑剂池。压缩机构布置在壳体内并可以可操作成压缩工作流体。第一温度传感器可以至少部分地布置在壳体内的第一位置处。第二温度传感器可以至少部分地布置在壳体内的第二位置处，所述第二位置在垂直方向上高于所述第一位置。控制模块可以与第一温度传感器和第二温度传感器以及压力传感器进行通信，并且可以基于从第一温度传感器和第二温度传感器接收的数据来确定润滑剂池中的液位是否在预定水平之下。

For comprises three or more than three of the compressor of the multi-compressor system oil balance device

DEVICE OF COMPRESSION, AND THERMODYNAMIC SYSTEM INCLUDING/UNDERSTANDING SUCH A DEVICE OF COMPRESSION

Dispositif de compression (6) comprend un premier compresseur (7) et un deuxième compresseur (8) montés en parallèle, chaque compresseur comprenant une enceinte étanche (9) comportant une partie basse pression (11) contenant un moteur (12) et un carter d'huile (13), une conduite d'égalisation de niveau d'huile (24) mettant en communication les carters d'huile (13) des premier et deuxième compresseurs (7, 8), et des moyens de commande (29) agencés pour commander la mise en marche et l'arrêt des premier et deuxième compresseurs (7, 8). Le premier compresseur (7) comprend des premiers moyens de détection (30) couplés aux moyens de commande (29) et agencés pour détecter un niveau d'huile dans le carter d'huile (13) du premier compresseur (7). Les moyens de commande (29) sont agencés pour commander un arrêt du deuxième compresseur (8) lorsque le niveau d'huile détecté par les premiers moyens de détection (30) descend en dessous d'une première valeur prédéterminée. Compression device (6) comprises a first compressor (7) and a second compressor (8) connected in parallel, each compressor comprising a sealed enclosure (9) having a low pressure portion (11) containing a motor (12) and a housing of oil (13), an oil level equalizing line (24) putting in communication the oil sump (13) of the first and second compressors (7, 8), and control means (29) arranged to control the starting and stopping of the first and second compressors (7, 8). The first compressor (7) comprises first detection means (30) coupled to the control means (29) and arranged to detect an oil level in the oil sump (13) of the first compressor (7). The control means (29) are arranged to control a stopping of the second compressor (8) when the oil level detected by the first detection means (30) falls below a first predetermined value.

VARIABLE CAPACITY FLUIDIC MACHINE

An internal gear fluidic machine, in particular a pump for the lubrication circuit of a motor vehicle engine, comprises an operating part including an external gear (2) and an internal gear (4), which is housed within an axial cavity (25) of the external gear (2) and meshes with the latter. The external gear (2) is associated with a translating mechanism (8, 22), arranged to cause an axial sliding thereof relative to the internal gear (4) in order to vary the capacity and the fluid flow rate of the machine. The translating mechanism (8, 22) defines a first capacity, adjustment space (24) in communication with a high pressure chamber (48) of the machine, and a second capacity adjustment space (15) where pressure conditions exist that are dependent on the operating conditions of an element, different from the high pressure chamber (48), of a fluidic circuit in which the machine (1) is connected. The translating mechanism (8, 22) causes the sliding of the external gear (2) in response to the ...

Verdichtervorrichtung und thermodynamisches System, das eine derartige Verdichtervorrichtung umfasst

Verdichtervorrichtung (6), die einen ersten Verdichter (7) und einen zweiten Verdichter (8) umfasst, die parallel montiert sind, wobei jeder Verdichter einen dichten Behälter (9) umfasst, der einen Niederdruckabschnitt (11) aufweist, der einen Motor (12) und eine Ölwanne (13) enthält, wobei eine Ölstandsausgleichsleitung (24) die Ölwannen (13) des ersten und zweiten Verdichters (7, 8) in Kommunikation versetzt, und Steuermittel (29), die ausgebildet sind, um das Ingangsetzen und den Stopp des ersten und zweiten Verdichters (7, 8) zu befehlen. Der erste Verdichter (7) umfasst erste Detektionsmittel (30), die mit den Steuermitteln (29) gekoppelt sind und ausgebildet, um in der Ölwanne (13) des ersten Verdichters (7) einen Ölstand festzustellen. Die Steuermittel (29) sind ausgebildet, um einen Stopp des zweiten Verdichters (8) zu befehlen, wenn der von den ersten Detektionsmitteln (30) festgestellt Ölstand unter einen ersten vorbestimmten Wert fällt.

Liquid ring pump control

Cavity pump

An eccentric screw pump comprising at least a stator 1, a rotor 2, a drive 3, a suction housing 4 attached to the stator, a connecting shaft 9 attached to the drive. The connecting shaft is sealed by means of a shaft seal 13, a connection housing (lantern) 14 is arranged between the suction housing and the drive, to which the shaft seal is attached. The connection housing is closed and liquid-tight. A barrier pressure device may be attached to the shaft seal. Preferably a pressure monitoring device 20 is arranged in or on the connection housing. The connection housing may be provided with a detachable maintenance cover 21 and /or be box or cuboid shaped and / or filled with freshwater or freshwater-glycerol mixture. The pump, may be submersible. A controller may be included and / or equipped with an automatic shut-off device connected to the monitoring device.

MULTIPLE COMPRESSOR REFRIGERATION SYSTEM

Suction Header Arrangement for Oil Management in Multiple-Compressor Systems

A refrigeration system with two or more compressors configured to compress a flow of refrigerant with oil entrained therein. A suction flow piping arrangement is configured to supply a flow of refrigerant and oil to the two or more compressors. The suction flow piping arrangement has a suction header configured to carry the flow of refrigerant and oil, and a primary compressor supply conduit connected to the suction header. The primary compressor supply conduit supplies refrigerant and oil to a first compressor of the two or more compressors. A secondary compressor supply conduit branches off from the suction header. The secondary compressor supply conduit supplies refrigerant to a second compressor of the two or more compressors. The primary compressor supply conduit is configured to supply more oil to the first compressor than the secondary compressor supply conduit supplies to the second compressor.

Refrigerant compression device and refrigeration device

This refrigerant compression device comprises: a compressor including a compression mechanism unit that compresses a refrigerant, an electric mechanism unit that drives the compression mechanism unit, a shell that houses the compression mechanism unit and the electric mechanism unit, a retention unit that is provided inside the shell and that retains a mixed liquid of a liquid refrigerant including at least a refrigeration oil, and an electrode that is provided inside the retention unit and that opposes the inner surface of the shell; a relative permittivity detection unit that detects the relative permittivity of the mixed liquid present between the electrode and the shell opposing the electrode; an oil concentration detection unit that, on the basis of the detected relative permittivity, detects the oil concentration indicating the proportion of the refrigeration oil in the mixed liquid; and a control unit that, on the basis of the detected oil concentration, controls the operation of ...

Control system for liquid ring pumps

Refrigerant compressor unit

WATERTIGHT CHAMBER TYPE ELECTRIC VACUUM PUMP AND VACUUM BOOSTING BRAKE SYSTEM

An electric vacuum pump applied to a vacuum boosting brake system is provided. The pump has a water containing capacity that is greater than a backflow water capacity of an internal space defined in a pump housing which forms vacuum pressure. The pump includes a watertight chamber that is coupled to an exhaust port of a pump housing.

Fahrzeugklimaanlage

DRUCKGASVERTEILUNGSSYSTEM

MULTIPLE COMPRESSOR REFRIGERATION SYSTEM MULTIPLE COMPRESSOR REFRIGERATION SYSTEM

THERMODYNAMIC SYSTEM COMPRISING A PLURALITY OF COMPRESSORS

OIL LEVEL DETECTING MEANS FOR COMPRESSOR

Air-conditioner for use in an automobile

In an electromotive compressor of an air-conditioner for use in an automobile, an interior space of a container of a compressor is divided into a space including a compression mechanism portion and an electric motor portion, and an oil storage space, wherein an oil passage is provided in a lower portion while a partition having a gas passage in an upper portion thereof, and a gas emission pipe is provided in one of the two (2) spaces at the oil storage portion side, being divided by the partition plate, while an oil supply pipe in the other, thereby making an opening of the oil supply pipe dipped within the lubricating oil even when a car declines.

КОМПРЕССОРНЫЙ МОДУЛЬ ХОЛОДИЛЬНОГО АГЕНТА

FIELD: cooling or freezing equipment. SUBSTANCE: invention relates to compressor module of refrigerant. Module includes compressor housing (52) and at least one located in housing (52) and made with possibility of movement by means of support and drive parts, as well as compressor element operating in at least one compressor chamber, at least one lubricant feed point located in housing (52) for at least one of support and drive parts and/or for compressor element, as well as a lubricating oil supply line for at least one lubricant supply point. Supply line has accumulating lubricating material chamber, which is permeated with lubricating material, in which sensor (122) of lubricant presence is installed for registration of lubricant in accumulating chamber. EFFECT: invention is aimed at ensuring optimal supply with lubricating oil. 28 cl, 5 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 716 948 C1 (51) МПК F04C 29/02 (2006.01) F04C 18/16 (2006.01) F04C 28/28 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F04C 29/028 (2019.05); F04C 18/16 (2019.05); F04C 28/28 (2019.05) (21)(22) Заявка: 2018138234, 06.04.2016 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): БИТЦЕР КЮЛЬМАШИНЕНБАУ ГМБХ (DE) Дата регистрации: 17.03.2020 (56) Список документов, цитированных в отчете о поиске: US 6116046 A, 12.09.2000. US 6125642 A, 03.10.2000. WO 2005050019 A1, 02.06.2005. DE 102013203268 A1, 28.08.2014. SU 1236173 A1, 07.06.1986. (45) Опубликовано: 17.03.2020 Бюл. № 8 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 06.11.2018 (86) Заявка PCT: EP 2016/057533 (06.04.2016) 2 7 1 6 9 4 8 Приоритет(ы): (22) Дата подачи заявки: 06.04.2016 R U 06.04.2016 (72) Автор(ы): МИКУЛИЧ Тихомир (DE), ФЕЛЛЕР Клаус (DE) 2 7 1 6 9 4 8 R U WO 2017/174129 (12.10.2017) Адрес для переписки: 105082, Москва, пер. Спартаковский, 2, стр. 1, секция 1, этаж 3, ЕВРОМАРКПАТ (54) КОМПРЕССОРНЫЙ МОДУЛЬ ХОЛОДИЛЬНОГО АГЕНТА ...

Schmierstrategie für ein Trockenlaufpumpensystem

Gerotorpumpenanordnung (40), umfassend:eine Welle (48);ein mit der Welle (48) gekoppeltes inneres Antriebszahnrad (54), wobei die Welle (48) und das innere Antriebszahnrad (54) um eine entlang einer Länge der Welle (48) definierte Drehachse (X) drehbar sind, wobei das innere Antriebszahnrad (54) eine Vielzahl von Vorsprüngen (60) aufweist, die sich entlang eines äußeren Umfangs (62) davon nach außen erstrecken, wobei das innere Antriebszahnrad (54) eine Pumpenlauffläche (104) entlang einer Seite des inneren Antriebszahnrads (54) definiert, wobei die Pumpenlauffläche (104) einen Schmierhohlraum (106) darin definiert;ein äußeres Abtriebszahnrad (58), welches das innere Antriebszahnrad (54) umgibt und eine Vielzahl von Rezessionen (64) entlang einer Innenfläche (66) definiert, die konfiguriert ist, um in die Vielzahl von Vorsprüngen (60) des inneren Antriebszahnrads (54) einzugreifen, wobei das äußere Abtriebszahnrad (58) und das innere Antriebszahnrad (54) ferner mindestens einen sich dynamisch ...

A process for monitoring the coolant level in a cooling system

In a process for monitoring the coolant level in a cooling system, in particular in an air-conditioned motor vehicle, the relative pressure and the temperature of the coolant are measured on the high-pressure side of the coolant circuit, using the measured pressure value a temperature corresponding to the latter is established on the basis of a coolant-specific function (temperature = f (pressure)), and the undercooling of the coolant is then determined by subtracting the measured temperature from the assigned temperature, which undercooling is analysed as a measure for the coolant level. The system shown has a compressor 1.1, condenser 1.2, liquid reservoir and drier 1.3, injection valve 1.4 and evaporator 1.5. Temperature and pressure sensors 2, 3 feed signals to a monitor unit 4 in which the measured temperature TG is subtracted from the temperature T assigned to the measured pressure. A result outside limits is indicative of under or over filling of the system. ...

Control system for liquid ring pumps

A control system comprising a liquid ring pump 10 coupled with suction line 34, exhaust line 38 and operating liquid line 40 via respective ports, an operating fluid pump 16 which pumps the operating fluid, a first sensor 24 which measures a first parameter of the exhaust fluid, a second sensor which measures a parameter of a fluid received by the liquid ring pump and a controller which is coupled to the first sensor, second sensor and the motor, where the controller controls the operating fluid pump speed based on the first and second parameters. The first parameter may be temperature, the second parameter may be pressure. The controller may calculate a vapour pressure of the operating liquid and control the motor based that pressure and the second parameter. The operating liquid may be recycled from the exhaust back to the pump, there may be a separator in the exhaust, there may also be a cooling means to cool the operating liquid before re-use. The controller may alternatively control ...

Cavity pump

MULTIPLE COMPRESSOR REFRIGERATION SYSTEM MULTIPLE COMPRESSOR REFRIGERATION SYSTEM

Oil level detecting device for a compressor and an air conditioning system having the same

An oil level detecting device for a compressor and an air conditioning system having the same are provided. The oil level detecting device may be provided in a compressor including a compression device that introduces and compresses a working fluid, a driving device mechanically connected to the compression device that operates the compression device, and a case that accommodates the compression device and the driving device thereinside and having an oil storage space that stores oil at a lower portion thereof. The oil level detecting device may include a detector including a supporting portion configured to be attached to the case and a detecting portion that protrudes inside the case. At least one property of the detecting portion may vary according to an oil level inside the case. The oil level detecting device may also include a signal processor including an electronic element having at least one reference property. The signal processor may compare the at least one property of the detecting ...

MULTIPLE COMPRESSOR REFRIGERATION SYSTEM

압축기의 액체 주입을 조절하기 위한 방법, 액체 주입식 압축기 및 액체 주입식 압축기 요소

... 압축기 장치(1)의 액체 주입을 제어하기 위한 방법으로서, 상기 압축기 장치는 적어도 하나의 압축기 요소(2)를 포함하여, 압축기 요소(2)는 적어도 하나의 로터(7)가 베어링(8)에 의해 회전 가능하게 부착되는 압축 공간(4)을 포함하는 하우징(3)을 포함하여, 액체가 압축기 요소(2) 내로 주입되는 것인 방법에 있어서, 상기 방법은 2개의 독립적인 분리된 액체 공급을 압축기 요소(2)에 제공하는 단계를 포함하며, 하나의 액체 공급이 압축 공간(4) 내로 주입되고, 다른 액체 공급은 베어링(8)의 위치에서 주입되는 것을 특징으로 한다.

Scroll compressor

A scroll-type compressor is disclosed which includes both a high pressure lubricant sump and a low pressure lubricant sump. Lubricant from the low pressure lubricant sump is supplied to the various bearing, thrust surfaces and other moving parts to lubricate same and a portion thereof is also supplied to the suction gas entering the compressor to replenish the lubricant in the high pressure sump. A first and a second oil separator are disposed in a discharge chamber to separate entrained oil from the compressed gas. A level control assembly is also provided in the discharge chamber and serves to return excessive accumulations of oil from the high pressure sump to the low pressure sump. In one embodiment, the compressor is specifically designed for compression of helium while in a second embodiment, the compressor is adapted for use as an air compressor.

A system for equalising lubricating oil levels in parallel connected compressors

Parallel connected compressors are provided with an oil management scheme in which an oil equalization port on one compressor is connected via an oil return solenoid operated valve within a small diameter line to an injection port of a second compressor, and vice versa. When the oil level in one compressor drops to a level sensed by an oil float switch, the oil float switch changes state, the oil return solenoid operated valve is opened, feeding its injection port and energizing a one minute on delay timer. Failure of the oil float switch to reset itself causes the compressor to go off on oil failure, and the oil return solenoid operated valve is closed. If the oil float switch resets itself at any time during the first minute, upon resetting, an off delay timer is energized to keep the oil return solenoid operated valve open for an additional minute, and the compressor continues to operate.

Compressor assembly with liquid sensor

COMPRESSION DEVICE, AND THERMODYNAMIC SYSTEM COMPRISING SUCH A COMPRESSION DEVICE

A PROCESS FOR MONITORING THE COOLANT LEVEL IN A COOLING SYSTEM

THERMODYNAMIC SYSTEM EQUIPS With a PLURALITY OF COMPRESSORS

Ce système thermodynamique comprend un circuit de circulation d'un fluide frigorigène comportant notamment un dispositif de compression comprenant un premier et un deuxième compresseurs (7, 8) comprenant chacun une enceinte étanche (9) pourvue d'une partie basse pression (11) contenant un moteur (12) et un carter d'huile (13) disposé dans le fond de l'enceinte, et d'un orifice d'admission (15) de fluide frigorigène débouchant dans la partie basse pression, un dispositif de distribution (18) de fluide frigorigène reliant un évaporateur (5) à l'orifice d'admission (15) du premier compresseur (7), une conduite d'égalisation de niveau d'huile (21) mettant en communication les carters d'huile (13) des premier et deuxième compresseurs, un dispositif de raccordement (22) mettant en communication la partie basse pression (11) du premier compresseur (7) avec l'orifice d'admission (15) du deuxième compresseur (8), et des moyens de commande (28) agencés pour commander la mise en marche et l'arrêt des premier et deuxième compresseurs selon quatre modes de commande. This thermodynamic system comprises a circulation circuit of a refrigerant including in particular a compression device comprising a first and a second compressor (7, 8) each comprising a sealed chamber (9) provided with a low pressure part (11) containing a motor (12) and an oil sump (13) disposed in the bottom of the enclosure, and a refrigerant inlet (15) opening into the low pressure portion, a distribution device (18) ) refrigerant connecting an evaporator (5) to the inlet (15) of the first compressor (7), an oil level equalizing line (21) communicating the oil sump (13). ) of the first and second compressors, a connecting device (22) placing the low pressure part (11) of the first compressor (7) in communication with the inlet (15) of the second compressor (8), and means control units (28) arranged to control the setting-in and stopping the first and ...

Vakuumpumpe

Eine Vakuumpumpe, insbesondere Drehschieberpumpe, umfasst wenigstens eine Pumpstufe zum Pumpen eines Fluids von einem Einlass der Pumpstufe zu einem Auslass der Pumpstufe, einen Sumpf, insbesondere Ölsumpf, für ein Betriebsmittel, insbesondere ein Öl, zum Schmieren und Abdichten der Pumpstufe, und wenigstens einen Kanal zur Führung des Betriebsmittels in der Pumpe, wobei der Kanal eine Mündung in den Sumpf aufweist, die unterhalb eines für das Betriebsmittel vorgesehenen Mindestpegels liegt.

Verfahren zur Überwachung des Kältemittel-Füllstandes in einer Kälteanlage

Schraubenkompressor für ein Nutzfahrzeug

Die vorliegende Erfindung betrifft einen Schraubenkompressor (10) für ein Nutzfahrzeug mit einem Gehäuse (20), wobei im betriebsbereiten und montierten Zustand des Schraubenkompressors (10) im Gehäuse (20) ein Ölsumpf vorgesehen und wobei im Ölsumpf ein Magnet (104) angeordnet ist.

Control system for liquid ring pumps

A compensated barrier and lubrication fluids pressure regulation system for a subsea motor and pump module

A compensated motor barrier and pump lubrication fluids pressure regulation system for a subsea motor and pump module is disclosed, comprising a hydraulic fluid supply providing barrier fluid and lubrication fluid to the motor and pump module, a barrier fluid circuit (14, 15, 17) in which the hydraulic fluid is pre- tensioned towards the motor by a pressure applied from a first separating pressure compensator (19), a lubrication fluid circuit (21, 22, 24) in which the hydraulic fluid is pre-tensioned towards the pump by a pressure applied from a second separating pressure compensator (26). The second pressure compensator (26) is responsive to the pumped medium pressure at a suction or at a discharge side of the pump and applies the sum of that pressure and its inherent pre-tensioning pressure to the lubrication fluid circuit, and the first pressure compensator (19) is responsive to the pressure in the lubrication fluid circuit and applies the sum of that pressure and its inherent pre-tensioning ...

MULTIPLE COMPRESSOR REFRIGERATION SYSTEM

WATER-INJECTED GAS COMPRESSOR AND METHOD FOR CONTROLLING THE WATER SUPPLY

The invention relates to a method for controlling the water supply of a water-injected compressor, into the cooling water circuit of which is injected demineralized and non-demineralized water as fresh water. The method according to the invention is characterized in that the fresh water supplied is a mixture of demineralized and non-demineralized water, and the proportions of the demineralized and non-demineralized water in the fresh water are dependent on the conductivity of the demineralized and non-demineralized water. The invention also relates to a water-injected gas compressor that may be operated with such a method.

Compression apparatus and comprising such a compression apparatus of the thermodynamic system

THERMODYNAMIC SYSTEM

Ce dispositif de compression (6) comprend des premier et deuxième compresseur (7, 8) montés en parallèle, une ligne d'aspiration (19) destinée à être reliée à une sortie d'un évaporateur (5), des première et deuxième conduites d'aspiration (21) agencées pour mettre en communication la ligne d'aspiration (19) avec respectivement les orifices d'admission (15) des premier et deuxième compresseurs (7, 8), et une conduite d'égalisation de niveau d'huile (24) reliant les carters d'huile (13) des premier et deuxième compresseurs (7, 8). Le dispositif de compression (6) comprend en outre un séparateur d'huile (31) monté sur la ligne d'aspiration (19) ou sur la deuxième conduite d'aspiration (22), et une conduite de retour d'huile (39) agencée pour relier un orifice de sortie d'huile (36) du séparateur d'huile (31) au carter d'huile (13) du premier compresseur (7).

OIL LEVEL DETECTING DEVICE FOR A COMPRESSOR AND AN AIR CONDITIONING SYSTEM HAVING THE SAME

An oil level detecting device for a compressor and an air conditioning system having the same are provided. The oil level detecting device may be provided in a compressor including a compression device that introduces and compresses a working fluid, a driving device mechanically connected to the compression device that operates the compression device, and a case that accommodates the compression device and the driving device thereinside and having an oil storage space that stores oil at a lower portion thereof. The oil level detecting device may include a detector including a supporting portion configured to be attached to the case and a detecting portion that protrudes inside the case. At least one property of the detecting portion may vary according to an oil level inside the case. The oil level detecting device may also include a signal processor including an electronic element having at least one reference property. The signal processor may compare the at least one property of the detecting ...

MULTIPLE COMPRESSOR REFRIGERATION SYSTEM

... 1429084 Compressors WESTINGHOUSE ELECTRIC CORP 4 June 1973 [19 June 1972] 26450/73 Heading F1N [Also in Division F4] A multiple refrigerant-compressor system comprises first and second hermetic-shell type compressors 1, 2; the first compressor 1 being adapted to run continuously and the second to be cycled on and off. The system also includes suction line inlets 12, 15 for the compressors, each inlet having a filter 13, 16 with the inlet 15 extending from within the shell of first compressor 1; high pressure discharge outlets 18, 21 for the compressors connected in parallel; and an oil equalizing conduit 30 communicating with the shells of the two compressors. The conduit 30 is disposed at a height corresponding to the minimum oil level desired in the first compressor when both compressors are running. When the second compressor is not running, a heater 40 is used to heat the oil and drive off entrained refrigerant. When the system is operating at full capacity with both compressors 1 and ...

MULTIPLE COMPRESSOR REFRIGERATION SYSTEM

Process for monitoring the coolant level in a cooling system

A process for monitoring the coolant level in a cooling system, in particular in a motor vehicle in which the relative pressure and the temperature of the coolant are measured on the high-pressure side of the coolant circuit, using the measured pressure value. A temperature assigned to the pressure value is established on the basis of a coolant specific function (temperature=f (pressure)) and the undercooling of the coolant is then determined by subtracting the measured temperature from the assigned temperature, which undercooling is analyzed as a measure for the coolant level.

System including high-side and low-side compressors

A heat pump system may be operable to circulate fluid between first and second heat exchangers in a first direction in a heating mode and in a second direction in a cooling mode. The heat pump system may include a suction conduit, a low-side compressor and a high-side compressor. The low-side and high-side compressors may both be in fluid communication with the suction conduit.

Lubrication strategy for dry run pump system

A gerotor pump assembly, and a system and method for operating a gerotor pump assembly, result in a lubrication strategy for operating in a loss-of-prime mode. An inner drive gear may be rotated in a first direction and in a second opposite direction about an axis of rotation. The inner drive gear has a number of projections extending outwardly therefrom. An outer driven gear surrounds the inner drive gear and defines a number of recessions along an inner surface configured to engage with the projections of the inner drive gear. The outer driven gear and the inner drive gear further define at least one dynamically-changing fluid cavity therebetween. The inner drive gear and the outer driven gear define an oil transfer volume clearance between a projection and a recession in a fully engaged position. Oil is maintained within the oil transfer volume clearance as the inner drive gear is rotated.

REFRIGERATING EQUIPMENT

ÖLSTANDSKONTROLLVORRICHTUNG FÜR KOMPRESSOREN

Wassereingespritzter Gas-Verdichter und Verfahren zur Steuerung der Wasserzufuhr

Die Erfindung betrifft ein Verfahren zur Steuerung der Wasserzufuhr eines wassereingespritzten Verdichters, bei dem entsalztes und nicht entsalztes Wasser als Frischwasser einem Kühlwasserkreislauf zugeführt wird. Das erfindungsgemäße Verfahren zeichnet sich dadurch aus, dass das zugeführte Frischwasser ein Gemisch aus entsalztem und nicht entsalztem Wasser ist, wobei die Anteile des entsalzten Wassers und des nicht entsalzten Wassers im Frischwasser von der Leitfähigkeit des entsalzten und des nicht entsalzten Wassers abhängig sind. Die Erfindung betrifft außerdem einen wassereingespritzen Gas-Verdichter, der mit einem derartigen Verfahren betrieben werden kann.

Liquid ring pump control

OIL EQUALIZATION SYSTEM FOR PARALLEL CONNECTED COMPRESSORS

OIL EQUALIZATION SYSTEM FOR PARALLEL CONNECTED COMPRESSORS Parallel connected compressors are provided with an oil management scheme in which an oil equalization port on one compressor is connected via an oil return solenoid operated valve within a small diameter line to an injection port of a second compressor, and vice versa. When the oil level in one compressor drops to a level sensed by an oil float switch, the oil float switch changes state, the oil return solenoid operated valve is opened, feeding its injection port and energizing a one minute on delay timer. Failure of the oil float switch to reset itself causes the compressor to go off on oil failure, and the oil return solenoid operated valve is closed. If the oil float switch resets itself at any time during the first minute, upon resetting, an off delay timer is energized to keep the oil return solenoid operated valve open for an additional minute, and the compressor continues to operate.

METHOD FOR REGULATING THE LIQUID INJECTION OF A COMPRESSOR, A LIQUID-INJECTED COMPRESSOR AND A LIQUID-INJECTED COMPRESSOR ELEMENT

Method for controlling the liquid injection of a compressor device (1), whereby this compressor device comprises at least one compressor element (2), whereby the compressor element (2) comprises a housing (3) that comprises a compression space (4) in which at least one rotor (7) is rotatably affixed by means of bearings (8), whereby liquid is injected into the compressor element (2), characterised in that the method comprises the step of providing two independent separated liquid supplies to the compressor element (2), whereby one liquid supply is injected into the compression space (4) and the other liquid supply is injected at the location of the bearings (8).

Compressor assembly with liquid sensor

OIL EQUALIZATION CONFIGURATION FOR MULTIPLE COMPRESSOR SYSTEMS CONTAINING THREE OR MORE COMPRESSORS

A method of operating a refrigeration system having at least three compressors, in which each compressor has an oil sump with oil at an oil level. The method includes separately connecting the oil sumps of the at least three compressors. Each separate connection allows oil flow only between the oil sumps of two of said compressors thereby preventing bypass flow. The method further includes flowing oil between oil sumps of the at least three compressors and along the separate connections to tend to equalize the oil levels among the oil sumps of the at least three compressors.

Eccentric screw pump

THERMODYNAMIC SYSTEM PROVIDED WITH A PLURALITY OF COMPRESSORS

The invention relates to a thermodynamic system, including a circuit for circulating a refrigerant which comprises, in particular: a compression device including first and second compressors (7, 8), each of which includes a sealed chamber (9) provided with a low-pressure portion (11) containing a motor (12) and an oil pan (13) that is arranged in the base of the chamber, and a refrigerant-intake opening (15) leading into the low-pressure portion; a refrigerant-dispensing device (18) connecting an evaporator (5) to the intake opening (15) of the first compressor (7); an oil level equalizing line (21) placing the oil pans (13) of the first and second compressors in communication with each other; a connection device (22) placing the low-pressure portion (11) of the first compressor (7) in communication with the intake opening (15) of the second compressor (8); and a control means (28) arranged to control the starting and stopping of the first and second compressors according to four control ...

ROTARY COMPRESSOR AND ROTATION MECHANISM

A rotary compressor, comprising: a housing (12), comprising a lubricant oil storage part for containing lubricating oil; a compression mechanism (20) disposed in the housing (12); a driving mechanism (30) driving the compression mechanism (20), the driving mechanism (30) comprising a rotation shaft (50), through-holes (54, 56) extending along the axial direction of the rotating shaft (50) are disposed inside the rotating shaft (50), and the rotation shaft (50) is in fluid connection with the lubricating oil storage part via the through-holes (54, 56); and an oil level sensor (120) in fluid connection with the through-holes (54, 56) inside the rotation shaft (50) via a pressurized collection channel (110). Also disclosed is a rotation mechanism, comprising an oil level sensor (120) in fluid connection with the through-holes (54, 56) inside the rotation shaft (50) via the pressurized collection channel (110). Accurate and reliable detection of the lubricating oil in a compressor can be done ...

Liquid ring pump control

A control system comprising a liquid ring pump coupled with suction line 34, exhaust line 38 and operating liquid line 40 via respective ports, a motor 12 which drives the pump, a first sensor 24 which measures a first parameter of the exhaust fluid, a second sensor which measures a second parameter of gas in the suction line and a controller which is coupled to the first sensor, second sensor and the motor, where the controller controls the motor speed based on the first and second parameters. The first parameter may be temperature, the second parameter may be pressure. The controller may calculate a vapour pressure of the operating liquid and control the motor based that pressure and the second parameter. The operating liquid may be recycled from the exhaust back to the pump, there may be a separator in the exhaust, there may also be a cooling means to cool the operating liquid before re-use. There is an independent method of controlling the control system.

Liquid ring pump control

Refrigerant compression device and refrigeration device

OIL EQUALIZATION CONFIGURATION FOR MULTIPLE COMPRESSOR SYSTEMS CONTAINING THREE OR MORE COMPRESSORS

A refrigeration system with at least three compressors connected in a circuit. Each compressor has a housing with an oil sump. The oil sump is adapted to contain oil that defines an oil level. A supply line supplies refrigerant and entrained oil to each of the at least three compressors. The oil sump of each compressor has at least one oil port. Each oil port is disposed at an elevation that is equal to or minimally higher than the level of oil to promote equalization of oil levels in each compressor. There are a plurality of separate conduits which are not directly connected, but connected through the oil sumps of separate compressors. At least one compressor includes an oil sump extension having connections for the separate conduits. Each oil port is connected to the separate conduits or an oil sump extension. Each separate conduit connects a pair of compressors. 1. A refrigeration system comprising:at least three compressors connected in a fluid circuit, each compressor having a compressor housing having an oil sump in a lower portion thereof, the oil sump adapted to contain oil that defines an oil level when in a fully filled oil state;a supply line which supplies oil to each of the at least three compressors in any operating mode of the at least three compressors,wherein the oil sump of each compressor of the at least three compressors has at least one oil port in the lower portion, each oil port disposed at an elevation that is equal to or higher than the oil level of oil to thereby promote equalization of oil levels among the oil sumps;a plurality of separate conduits, wherein the separate conduits are not directly connected to other conduits, but are fluidically connected through the oil sumps of separate compressors of the at least three compressors;wherein one of the at least three compressors includes an oil sump extension having connections for at least one of the plurality of separate conduits, the oil sump extension configured to permit oil flow ...

Liquid ring pump control

A liquid ring pump control system and method of controlling a liquid ring pump are disclosed. The system comprises a suction line 34, an exhaust line 38 and an operating liquid line 40 connected to the ports of a liquid ring pump 10. A regulating device 16 controls flow of the operating fluid into the liquid sealed pump 10. Sensors 32, 24 in the exhaust and operating fluid conduits 38, 40 measure parameters relating to those fluids and are coupled to a controller 20 that adjusts the regulator 16 based on these values. The measurements may be the temperature of the fluids. The flow of the operating fluid may be regulated by a pump. A further sensor 22 on the inlet line 34 may be used in conjunction with the exhaust sensor 24 to control the motor 12 of the liquid ring pump. The system achieves greater efficiency in water sealed pumps by lowering the temperature of the operating fluid.

Freezing device

System Including High-Side And Low-Side Compressors

A compressor may include a shell, a first compression mechanism, and a second compression mechanism. The shell may define a first chamber containing fluid at a first fluid-pressure. The first compression mechanism may be disposed within the first chamber and may include a first orbiting scroll and a first non-orbiting scroll. The first compression mechanism discharging compressed fluid into the first chamber at the first fluid-pressure. The second compression mechanism may be disposed in the first chamber and may include a second orbiting scroll and a second non-orbiting scroll. The second compression mechanism may define a suction inlet and a discharge outlet. The suction inlet may receive fluid at the first fluid-pressure from the first chamber such that the fluid at the first fluid pressure flows from the first compression mechanism to the suction inlet without exiting the shell. The discharge outlet may discharge fluid at a second fluid-pressure out of the shell.

SCROLL COMPRESSOR

A scroll compressor according to an implementation of the present disclosure may include an oil circulation pipe having one end inserted through a casing to be connected to an oil storage space inside the casing and another end connected to a suction passage for supplying refrigerant from outside of the casing to a compression chamber, an oil circulation valve disposed between the both ends of the oil circulation pipe to selectively open or close the oil circulation pipe, and a control unit to control an opening or closing operation of the oil circulation pipe, whereby frictional loss due to a shortage of oil can be prevented by adjusting an oil level of the oil storage space at an initial operation.

Motor-driven compressor and controller therefor

Compressor and Oil self-diagnosis method of the same

The present invention relates to an electronic device comprising a casing; A frame fixed to the casing; A fixed scroll installed in the frame; An orbiting scroll which forms a compression chamber in engagement with the fixed scroll and is supported by the frame; And a crankshaft coupled to the orbiting scroll and configured to transmit the rotational force of the motor to the orbiting scroll, wherein the casing includes a main housing having a coolant discharge hole and an oil passage formed therein; The sub housing includes a sensor hole in which a sensor module is installed. The sensor module includes a sensor housing for blocking a sensor hole, and; It is possible to more accurately confirm the smooth oil supply in the compressor by sensing the oil amount and the temperature of the oil passage with one sensor module including the oil sensor and the temperature sensor protruding into the oil reservoir portion in the sensor housing, This has a high advantage.

SYSTEM FOR A UTILITY VEHICLE COMPRISING A COMPRESSOR AND AN ELECTRIC MOTOR

A compensated barrier and lubrication fluids pressure regulation system for a subsea motor and pump module

A compensated motor barrier and pump lubrication fluids pressure regulation system for a subsea motor and pump module is disclosed, comprising a hydraulic fluid supply providing barrier fluid and lubrication fluid to the motor and pump module, a barrier fluid circuit (14, 15, 17) in which the hydraulic fluid is pre- tensioned towards the motor by a pressure applied from a first separating pressure compensator (19), a lubrication fluid circuit (21, 22, 24) in which the hydraulic fluid is pre-tensioned towards the pump by a pressure applied from a second separating pressure compensator (26). The second pressure compensator (26) is responsive to the pumped medium pressure at a suction or at a discharge side of the pump and applies the sum of that pressure and its inherent pre-tensioning pressure to the lubrication fluid circuit, and the first pressure compensator (19) is responsive to the pressure in the lubrication fluid circuit and applies the sum of that pressure and its inherent pre-tensioning pressure to the barrier fluid circuit.

LIQUID RING PUMP CONTROL

A control system comprising: a suction line; an exhaust line; an operating liquid line; a liquid ring pump comprising a suction input coupled to the suction line, an exhaust output coupled to the exhaust line, and a liquid input coupled to the operating liquid line; one or more regulating devices configured to control flow of the operating liquid into the liquid ring pump; a first sensor configured to measure a first parameter of an exhaust fluid of the liquid ring pump; a second sensor configured to measure a second parameter of an operating liquid received by the liquid ring pump; and a controller operatively coupled to the sensors and the regulating device(s), and configured to control the regulating device(s) based on measurements by the sensors.

Motor-driven compressor and controller therefor

A motor controller for a motor-driven compressor (10) includes a compressing body (11) for compressing and discharging a refrigerant and a motor (M) including a rotary shaft (12), the motor (M) for driving the compressing body (11) through the rotary shaft (12). A coil (252) of the motor (M) is arranged in a refrigerant containing area (181) in the motor-driven compressor (10). The motor controller includes a determining section (C1) for determining whether liquid refrigerant is present in the refrigerant containing area (181) and a modulation control section (27) for driving the motor (M) in accordance with three phase modulation control or two phase modulation control based on a determination result of the determining section (C1).

Kompressionsvorrichtung und thermodynamisches System, das eine derartige Kompressionsvorrichtung umfasst

Diese Kompressionsvorrichtung (6) umfasst einen ersten und einen zweiten Kompressor (7, 8), die parallel montiert sind, eine Sauglinie (19), die ausgelegt ist, um mit einem Ausgang eines Verdampfers (5) verbunden zu sein, eine erste und eine zweite Saugleitung (21), die angeordnet sind, um die Sauglinie (19) mit der Einlassöffnung (15) des ersten bzw. des zweiten Kompressors (7, 8) in Verbindung zu bringen, und eine Leitung zum Ausgleich des Ölstands (24), die die Ölwanne (13) des ersten und des zweiten Kompressors (7, 8) verbindet. Die Kompressionsvorrichtung (6) umfasst außerdem einen Ölabscheider (31), der auf der Sauglinie (19) oder auf der zweiten Saugleitung (22) montiert ist, eine Leitung zum Rückfluss des Öls (39), die angeordnet ist, um eine Öffnung zum Ausgang des Öls (36) des Ölabscheiders (31) mit der Ölwanne (13) des ersten Kompressors (7) zu verbinden.

Liquid-feed type gas compressor

Provided is a liquid-feed type gas compressor capable of monitoring the liquid surface height inside a gas-liquid separator. The liquid-feed type gas compressor comprises: an oil separator that separates and stores oil from compressed air discharged from a compressor main body; a sampling pipe having the inlet side thereof connected at a prescribed height position of the oil separator and causing fluid to flow from the prescribed height of the oil separator as a result of the pressure difference between the inlet side and the outlet side thereof; a pressure sensor that detects the pressure of fluid that flows into or has flowed into the sampling pipe; a control device that determines whether the fluid that flows through the sampling pipe is oil or gas, by determining whether or not the pressure detected by the pressure sensor rises above a set value or falls below a set value; and a notification device that makes notification of the determination results of the control device.

LUBRICATION STRATEGY FOR DRY RUN PUMP SYSTEM

A gerotor pump assembly, and a system and method for operating a gerotor pump assembly, result in a lubrication strategy for operating in a loss-of-prime mode. An inner drive gear may be rotated in a first direction and in a second opposite direction about an axis of rotation. The inner drive gear has a number of projections extending outwardly therefrom. An outer driven gear surrounds the inner drive gear and defines a number of recessions along an inner surface configured to engage with the projections of the inner drive gear. The outer driven gear and the inner drive gear further define at least one dynamically-changing fluid cavity therebetween. The inner drive gear and the outer driven gear define an oil transfer volume clearance between a projection and a recession in a fully engaged position. Oil is maintained within the oil transfer volume clearance as the inner drive gear is rotated.

An air-conditioner for use in an automobile

ÖLERKENNUNGSGERÄT FÜR EINEN KOMPRESSOR UND DASSELBE UMFASSENDEN KOMPRESSOR

Diese Erfindung bezieht sich auf ein Ölerkennungsgerät für einen Kompressor und einen Kompressor, wobei ein Gehäuse, in dem Öl empfangen ist, mehrere kapillare Röhren in einem inneren Raum des Gehäuses aufweist, und eine Eigenschaft des Öls auf der Grundlage eines Ergebnisses einer Druckmessung von den mehreren kapillaren Röhren erkannt ist.

FLUID MACHINE AND REFRIGERATION CYCLE DEVICE

A fluid machine (101) is provided with a first compressor (107) and a second compressor (108).  The first compressor (107) has a first sealed container (111), a first compression mechanism (102a), an expansion mechanism (104), and a shaft (113).  In the first sealed container (111) is formed a first oil sump (112).  The second compressor (108) has a second sealed container (125) and a second compression mechanism (102b).  A second oil sump (126) is formed at the bottom of the second sealed container (125).  The first sealed container (111) and the second sealed container (125) are interconnected by an oil path (109) such that lubricating oil can flow between the first oil sump (112) and the second oil sump (126).  An opening (109a) of the oil path (109), which opening (109a) is located on the first sealed container (111) side, is located above the expansion mechanism (104) in the vertical direction. The construction prevents flow of high-temperature lubricating oil around the expansion mechanism (104) and flow of high-temperature lubricating oil around the second compressor (108), and this suppresses movement of heat between the first compressor (107) and the second compressor (108).

Method of Active Oil Management for Multiple Scroll Compressors

A method of operating a refrigeration system uses a plurality of compressors in connected parallel. The method includes returning refrigerant and oil to the compressors, the refrigerant also having oil entrained therein, separating the oil entrained in the refrigerant, and returning more of the oil entrained in the refrigerant to a lead compressor of the plurality of compressors regardless of whether the lead compressor is operating. The method also includes connecting the oil sumps of all of the plurality of compressors such that oil is supplied from the lead compressor to at least one non-lead compressor of the plurality of compressors when the at least one non-lead compressor is operating.

Scroll compressor

SCROLL COMPRESSOR

Schraubenverdichteranlage

Es wird eine Schraubenverdichteranlage angegeben, welche in Modulbauweise kompakt und flexibel derart ausgelegt ist, dass in einem Basisgehäuse mit Deckel ein Schraubenverdichterblock, ein Ölabscheidebehälter, ein Ölsversorgungskanal für einen Temperaturregler und ein Luftansaugkanal zusammengefasst sind. Als weitere Modulkomponente ist ein Multifunktionsblock vorgesehen, in welchem ein Feinabscheider, eine Ölrückführung, ein Mindestdruckhalteventil mit einem Reinluftaustritt, ein Öltemperaturregler, ein Ölfilter und Anschlüsse für einen Fühler zusammengefasst sind.

System für ein Nutzfahrzeug umfassend einen Schraubenkompressor sowie einen Elektromotor

Die vorliegende Erfindung betrifft ein System (1) für ein Nutzfahrzeug umfassend einen Kompressor (10), einen Elektromotor (5) und eine Antriebselektronik (94), wobei der Elektromotor (5) den Kompressor (10) antreibt, wobei Elektromotor (5) und Antriebselektronik (94) ein gemeinsames Gehäuse (102) aufweisen und wobei der Elektromotor (5) einen Rotor aufweist, der die Antriebswelle des Kompressors (10) zumindest teilweise umgreift.

Exzenterschneckenpumpe

Exzenterschneckenpumpe mit zumindest – einem Stator (1), – einem in dem Stator (1) rotierenden Rotor (2), – einem Antrieb (3) für den Rotor (2), – einem an den Stator (1) angeschlossenen Sauggehäuse (4), – einer an den Antrieb (3) angeschlossenen Verbindungswelle (9), wobei die Verbindungswelle (9) mit einer Wellenabdichtung (13) abgedichtet ist, wobei zwischen Sauggehäuse (4) und Antrieb (3) ein Verbindungsgehäuse (14) angeordnet ist, an welches die Wellenabdichtung (13) angeschlossen ist, dadurch gekennzeichnet, dass das Verbindungsgehäuse (14) als geschlossenes Gehäuse flüssigkeitsdicht ausgebildet ist.

REFRIGERATING EQUIPMENT

Refrigerating equipment, wherein the excess amounts of lubricating oil (L) in the closed cases (100) of compressors (1a), (1b), and (1c) flow into oil pipes (14a), (14b), and (14c), the lubricating oil (L) flowing into the oil pipes flows into one collecting pipe (17), and the lubricating oil (L) in the collecting pipe (17) is fed to the closed cases (100) of the compressors (1a), (1b), and (1c) through oil pipes (18a), (18b), and (18c) and suction pipes (12a), (12b), and (12c). © KIPO & WIPO 2007 ...

Oil control for climate-control system

A system may include a first compressor, a second compressor, a first heat exchanger and a second heat exchanger. The first compressor has a first inlet and a first outlet. The second compressor is a sumpless compressor and has a second inlet and a second outlet. The second compressor provides working fluid discharged from the second outlet to the first compressor. The first heat exchanger is disposed upstream of the second compressor and provides working fluid to the second compressor. The second heat exchanger is disposed upstream of the first compressor and provides working fluid to the first compressor.

Refrigeration equipment

Fahrzeugklimaanlage

An air-conditioner for use in an automobile

In an electromotive compressor of an air-conditioner for use in an automobile, an interior space of a container of a compressor is divided into a space including a compression mechanism portion (101) and an electric motor portion (102), and an oil storage space (92), wherein an oil passage (162) is provided in a lower portion of a partition (16) having a gas passage (161) in an upper portion thereof, and a gas emission pipe (92) is provided in one of the two (2) spaces at the oil storage portion side, being divided by the partition plate (16), while an oil supply pipe in the other, thereby making an opening of the oil supply pipe (10) dipped within the lubricating oil even when a car declines.

Compression device, and a thermodynamic system comprising such a compression device

This compression device comprises first and second compressors mounted in parallel, a suction line intended to be connected to an outlet of an evaporator, first and second suction conduits arranged for putting the suction line respectively in communication with the admission orifices of the first and second compressors, and an oil level equalization conduit connecting the oil pans of the first and second compressors. The compression device further comprises an oil separator mounted on the suction line or on the second suction conduit, and an oil return conduit arranged for connecting an oil outflow orifice of the oil separator to the oil pan of the first compressor.

Liquid Supply Type Gas Compressor and Gas-Liquid Separator

The liquid level of a liquid supply type compressor including a gas-liquid separator is dynamically monitored. A liquid supply type gas compressor includes a compressor body of a liquid supply type; a gas-liquid separator that separates a liquid from a compressed gas, which is discharged, to store the liquid; a liquid piping system that supplies the liquid stored to the compressor body; an internal pipe that extends in an internal space of the gas-liquid separator, and includes at least two hole portions, of which disposition positions are different from each other in a height direction, on an internal space side to communicate with the liquid piping system; and a detector that detects a pressure or a temperature of a fluid flowing through the liquid piping system. At least one of a determination as to whether or not the pressure or the temperature detected by the detector is more than a first set value set in advance and a determination as to whether or not the pressure or the temperature detected by the detector is less than a second set value which is set in advance to be less than the first set value is performed to determine which one of the gas and the liquid is the fluid flowing through the liquid piping system.

Compressor Having Oil-Level Sensing System

A compressor may include a shell containing a motor, a compression mechanism and a lubricant sump. The compressor may also include first and second temperature sensors, and a control module. The first temperature sensor may be at least partially disposed within the lubricant sump and may measure a first temperature of a lubricant at a first position. The second temperature sensor may be at least partially disposed within the lubricant sump and may measure a second temperature of the lubricant at a second position that is vertically higher than the first position. The control module is in communication with the first and second temperature sensors. The control module may determine a first difference between the first temperature and the second temperature. The control module may determine whether a liquid level of the lubricant in the lubricant sump is below a predetermined level based on the first difference. 1. A compressor comprising:a shell including a motor, a compression mechanism and a lubricant sump;a first temperature sensor at least partially disposed within said lubricant sump and configured to measure a first temperature of a lubricant at a first position;a second temperature sensor at least partially disposed within said lubricant sump and configured to measure a second temperature of said lubricant at a second position that is vertically higher than said first position; anda control module in communication with said first and second temperature sensors, said control module configured to determine a first difference between the first temperature and the second temperature, said control module configured to determine whether a liquid level of said lubricant in said lubricant sump is below a predetermined level based on said first difference.2. The compressor of claim 1 , wherein a vertical height of said second position is equal to a vertical height of said predetermined level.3. The compressor of claim 1 , wherein said predetermined level equals a ...

Liquid-Feed-Type Gas Compressor

A liquid-feed-type gas compressor that can monitor the liquid surface height in a gas-liquid separator is provided. An oil-feed-type air compressor includes: an oil separator that separates oil from compressed air discharged from a compressor main body 1 and stores the oil therein; a sampling line whose inlet side is connected to a predetermined height position of the oil separator and that allows fluid from the predetermined height position of the oil separator to flow by the pressure difference between the inlet side and the outlet side; a pressure sensor that detects the pressure of the fluid that flows or has flown in the sampling line; a controller that determines which of air and oil the fluid that flows in the sampling line is by carrying out determination of whether the pressure detected by the pressure sensor exceeds a set value P1 in some cases and determination of whether the pressure falls below a set value P2 in some cases; and an informing device that informs a determination result of the controller.

System Including High-Side and Low-Side Compressors

A heat pump system may be operable to circulate fluid between first and second heat exchangers in a first direction in a heating mode and in a second direction in a cooling mode. The heat pump system may include a suction conduit, a low-side compressor and a high-side compressor. The low-side and high-side compressors may both be in fluid communication with the suction conduit.

Compressor system and system for maintaining a desired oil level

A compressor system includes: a compressor having a suction side and a discharge side, wherein the compressor is operative to compress a gas using oil, wherein the suction side operates at a suction pressure and is operative to receive a the gas and the oil into the compressor; and wherein the discharge side is operative to discharge the compressed gas and the oil; a gas/oil separator tank operative to store oil separated from the compressed gas for subsequent use by the compressor; a supplemental oil reservoir in fluid communication with the suction side; and a valve operative to, when opened, expose the supplemental oil reservoir to the suction pressure of the suction side of the compressor, and draw oil from the supplemental oil reservoir by suction into the suction side of the compressor.

COMPRESSOR, REFRIGERANT COMPRESSING APPARATUS, AND REFRIGERATING APPARATUS

A compressor includes a compression mechanism configured to compress refrigerant, an electromotive mechanism configured to drive the compression mechanism, a shell accommodating the compression mechanism and the electromotive mechanism, a reservoir provided inside the shell and configured to store mixed liquid including liquid refrigerant and refrigerating machine oil, and an electrode provided inside the reservoir and facing an inner surface of the shell. 114-. (canceled)15. A compressor , comprising:a compression mechanism configured to compress refrigerant,an electromotive mechanism configured to drive the compression mechanism,a shell accommodating the compression mechanism and the electromotive mechanism inside an inner surface of the shell in a radial direction,a reservoir provided inside the shell and configured to store mixed liquid including liquid refrigerant and refrigerating machine oil, andan electrode provided inside the reservoir and facing the inner surface of the shell.16. The compressor of further comprising:a spindle driven by the electromotive mechanism;a main bearing unit supporting an upper end portion of the spindle; anda sub bearing unit provided inside the reservoir and supporting a lower end portion of the spindle, whereinthe electrode is located above the sub bearing unit.17. The compressor of further comprising an oil pump provided inside the reservoir to suck up the mixed liquid claim 15 , whereinthe electrode is located to surround the oil pump.18. The compressor of claim 17 , whereinthe electrode includesa first electrode located at a height of an inlet port of the oil pump, anda second electrode located above the first electrode, to be insulated from the first electrode.19. The compressor of further comprising a spindle including an oil passage formed inside the spindle claim 15 , and driven by the electromotive mechanism claim 15 , whereinan inlet port is provided in the reservoir to suck up the mixed liquid to the oil passage, ...

METHOD FOR REGULATING THE LIQUID INJECTION OF A COMPRESSOR, A LIQUID-INJECTED COMPRESSOR AND A LIQUID-INJECTED COMPRESSOR ELEMENT

Method for controlling the liquid injection of a compressor device, whereby this compressor device includes at least one compressor element, whereby the compressor element includes a housing that includes a compression space in which at least one rotor is rotatably affixed by means of bearings, whereby liquid is injected into the compressor element, wherein the method comprises the step of providing two independent separated liquid supplies to the compressor element, whereby one liquid supply is injected into the compression space and the other liquid supply is injected at the location of the bearings. 115-. (canceled)16. A method for controlling the liquid injection of a compressor device , whereby this compressor device comprises at least one compressor element , whereby the compressor element comprises a housing that comprises a compression space in which at least one rotor is rotatably affixed by bearings , whereby liquid is injected into the compressor element , wherein the method comprises the step of providing two independent separated liquid supplies to the compressor element , whereby one liquid supply is injected into the compression space and the other liquid supply is injected at the location of the bearings , and the method further comprises the step of controlling both the temperature of the liquid and the mass flow of the liquid , for both liquid supplies separately.17. The method according to claim 16 , wherein to control the temperature and the mass flow of a liquid supply claim 16 , the method consists of first controlling the mass flow and then controlling the temperature.18. The Method according to claim 16 , wherein the method consists of controlling the temperature and the mass flow of the liquid supplies such that the specific energy requirement is a minimum claim 16 , whereby the specific energy requirement is the ratio of the power of the compressor device to the flow supplied by the compressor device converted back to the inlet conditions ...

System Including High-Side And Low-Side Compressors

A compressor may include a shell, a first compression mechanism, and a second compression mechanism. The shell may define a first chamber containing fluid at a first fluid-pressure. The first compression mechanism may be disposed within the first chamber and may include a first orbiting scroll and a first non-orbiting scroll. The first compression mechanism discharging compressed fluid into the first chamber at the first fluid-pressure. The second compression mechanism may be disposed in the first chamber and may include a second orbiting scroll and a second non-orbiting scroll. The second compression mechanism may define a suction inlet and a discharge outlet. The suction inlet may receive fluid at the first fluid-pressure from the first chamber such that the fluid at the first fluid pressure flows from the first compression mechanism to the suction inlet without exiting the shell. The discharge outlet may discharge fluid at a second fluid-pressure out of the shell. 1. A compressor comprising:a shell defining a first chamber containing fluid at a first fluid-pressure;a first compression mechanism disposed within the first chamber and including a first orbiting scroll and a first non-orbiting scroll, the first compression mechanism discharging compressed fluid into the first chamber at the first fluid-pressure; anda second compression mechanism disposed in the first chamber and including a second orbiting scroll and a second non-orbiting scroll, the second compression mechanism defining a suction inlet and a discharge outlet, the suction inlet receiving fluid at the first fluid-pressure from the first chamber such that the fluid at the first fluid pressure flows from the first compression mechanism to the suction inlet without exiting the shell, the discharge outlet discharging fluid at a second fluid-pressure out of the shell.2. The compressor of claim 1 , wherein the shell defines a second chamber at the second fluid-pressure.3. The compressor of claim 2 , wherein ...

Refrigerant compressor including an oil level sensor arrangement

The refrigerant compressor includes a compressor casing ( 2 ); an oil sump ( 13 ) arranged in the compressor casing ( 2 ); and an oil level sensor arrangement ( 14 ) configured to detect an oil level in the oil sump ( 13 ), the oil level sensor arrangement ( 14 ) including a tubular element ( 16 ) secured to the compressor casing ( 2 ) and a floating element ( 17 ) surrounding the tubular element ( 16 ) and being movably mounted with respect to the tubular element ( 16 ). The compressor casing ( 2 ) includes a passage opening ( 24 ) and dimensions of the tubular element ( 16 ), the floating element ( 17 ) and the passage opening ( 24 ) are defined to allow an insertion and a removal of the tubular element ( 16 ) and the floating element ( 17 ) into and out of the compressor casing ( 2 ) through the passage opening ( 24 ).

具有油平衡系统的多压缩机配置

提供了一种用于多压缩机系统的油平衡系统。油平衡系统包括布置在第一压缩机与第二压缩机之间的油均衡管线。在油均衡管线中设置有第一电磁阀。第一信号对应于第一压缩机中的第一油位。第二信号对应于第二压缩机中的第二油位。油平衡模块使用第一信号和第二信号来判断第一压缩机与第二压缩机之间的油不平衡，并且施加校正动作，由此校正动作包括发送控制信号以操作第一压缩机、第二压缩机或第一电磁阀中的至少一者，使得能够消除油不平衡。

Oil level detecting device for a compressor and an air conditioning system having the same

本发明提供了一种压缩机的油位检测设备及具有该设备的空调系统。油位检测设备设置在压缩机中，该压缩机包括引入工作流体并压缩的压缩设备、机械式连接到该压缩设备并操作该压缩设备的驱动设备、以及内部容纳该压缩设备和该驱动设备并具有在较低部处储油的储油空间的壳体。油位检测设备包括检测器，该检测器包括配置为附着于所述压缩机的所述壳体的支撑部和伸入所述壳体内的检测部。检测部的至少一个属性根据所述壳体内的油位而变化。油位检测设备还包括信号处理器，所述信号处理器包括具有至少一个参考属性的电子元件。信号处理器将所述检测部的至少一个属性与该电子元件的至少一个参考属性进行比较，并根据结果输出控制信号。

Liquid supply type gas compressor

本发明提供一种能够监视气液分离器内的液面高度的供液式气体压缩机。本发明的供油式空气压缩机包括：从由压缩机主体(1)排出的压缩空气中分离出油并将其贮存的油分离器；取样配管，其入口侧与油分离器的规定的高度位置连接，通过入口侧与出口侧的压力差而使得来自油分离器的规定的高度位置的流体在其中流动；检测取样配管中流动的或流过了取样配管的流体的压力的压力传感器；控制装置，其进行由压力传感器检测出的压力是否超过设定值(P1)的判断、以及是否低于设定值(P2)的判断，来判断取样配管中流动的流体是空气和油中的哪一者；和通知控制装置的判断结果的通知装置。

OIL DISTRIBUTION DEVICE FOR COMPRESSORS CONNECTED IN PARALLEL

AU MOINS DEUX COMPRESSEURS A GAZ 12, 14 CONNECTES EN PARALLELE ENTRE UN COLLECTEUR DE REFOULEMENT 18 ET UN COLLECTEUR D'ASPIRATION 16 SONT EQUIPES D'UN DISPOSITIF DE REPARTITION D'HUILE DANS LEQUEL UNE LUMIERE 56 D'UN COMPRESSEUR EST CONNECTEE PAR UNE CONDUITE 58 PORTANT UNE SOUPAPE 62 COMMANDEE PAR SOLENOIDE A UNE LUMIERE D'INJECTION 60 D'UN SECOND COMPRESSEUR ET VICE VERSA. LES COMPRESSEURS COMPORTENT DES DETECTEURS 72, 74 DE NIVEAU D'HUILE. QUAND LE NIVEAU DANS UN COMPRESSEUR CHUTE A UNE VALEUR REPEREE PAR UN DETECTEUR, LA SOUPAPE EST OUVERTE, LAISSANT PASSER L'HUILE D'UN BLOC VERS L'AUTRE ET DECLENCHANT UNE LIGNE A RETARD D'UNE MINUTE. SI LE DETECTEUR NE REPREND PAS SA POSITION DANS LA MINUTE, LE COMPRESSEUR EST ARRETE ET LA SOUPAPE EST FERMEE. SI LE DETECTEUR REPREND SA POSITION AVANT UNE MINUTE, UN AUTRE RETARD MAINTIENT LA SOUPAPE OUVERTE PENDANT UNE MINUTE POUR EVITER LE POMPAGE ET LE COMPRESSEUR CONTINUE A FONCTIONNER. AT LEAST TWO GAS COMPRESSORS 12, 14 CONNECTED IN PARALLEL BETWEEN A DELIVERY MANIFOLD 18 AND A SUCTION MANIFOLD 16 ARE EQUIPPED WITH AN OIL DISTRIBUTION DEVICE IN WHICH A LIGHT 56 OF A COMPRESSOR IS CONNECTED BY A CONDUIT 58 CARRYING A VALVE 62 CONTROLLED BY SOLENOIDE TO AN INJECTION LIGHT 60 OF A SECOND COMPRESSOR AND VICE VERSA. COMPRESSORS INCLUDE OIL LEVEL SENSORS 72, 74. WHEN THE LEVEL IN A COMPRESSOR FALLS TO A VALUE IDENTIFIED BY A DETECTOR, THE VALVE IS OPEN, LETTING OIL FROM ONE BLOCK TO THE OTHER AND TRIGGERING A DELAYED LINE OF ONE MINUTE. IF THE DETECTOR DOES NOT RETURN TO ITS POSITION IN THE MINUTE, THE COMPRESSOR IS STOPPED AND THE VALVE IS CLOSED. IF THE DETECTOR RETURNS TO ITS POSITION BEFORE A MINUTE, ANOTHER DELAY KEEP THE VALVE OPEN FOR A MINUTE TO AVOID PUMPING AND THE COMPRESSOR CONTINUES TO OPERATE.

Refrigeration cycle equipment

冷凍サイクル装置１００は、膨張機一体型圧縮機１０１および第２圧縮機１０２を備えている。膨張機一体型圧縮機１０１の第１オイル溜まり１３は、連絡管３０によって第２圧縮機１０２の第２オイル溜まり１４に連通している。連絡管３０には、連絡管３０内のオイルの流れを遮断できる第１弁３１が設けられている。冷凍サイクル装置１００の運転を停止する際、（ａ）連絡管３０を通じて第２オイル溜まり１４のオイルを第１オイル溜まり１３へと移動させるための第１運転を含むオイル量調整運転と、（ｂ）第１弁３１を閉じるステップ、膨張機一体型圧縮機１０１を停止するステップ、および、第２圧縮機１０２を停止するステップを含む停止処理とを実行する。 The refrigeration cycle apparatus 100 includes an expander-integrated compressor 101 and a second compressor 102. The first oil sump 13 of the expander-integrated compressor 101 communicates with the second oil sump 14 of the second compressor 102 through the connecting pipe 30. The communication pipe 30 is provided with a first valve 31 that can block the flow of oil in the communication pipe 30. When the operation of the refrigeration cycle apparatus 100 is stopped, (a) an oil amount adjusting operation including a first operation for moving the oil in the second oil reservoir 14 to the first oil reservoir 13 through the communication pipe 30; ) A stop process including a step of closing the first valve 31, a step of stopping the expander-integrated compressor 101, and a step of stopping the second compressor 102 is executed.

Scroll compressor

A scroll-type compressor is disclosed which includes both a high pressure lubricant sump and a low pressure lubricant sump. Lubricant from the low pressure lubricant sump is supplied to the various bearing, thrust surfaces and other moving parts to lubricate same and a portion thereof is also supplied to the suction gas entering the compressor to replenish the lubricant in the high pressure sump. An oil separator is disposed in a discharge chamber to separate entrained oil from the compressed gas. A level control assembly is also provided in the discharge chamber and serves to return excessive accumulations of oil from the high pressure sump to the low pressure sump. In one embodiment, the compressor is specifically designed for compression of helium while in a second embodiment, the compressor is adapted for use as an air compressor.

Method of active oil management for multiple scroll compressors

A method of operating a refrigeration system uses a plurality of compressors in connected parallel. The method includes returning refrigerant and oil to the compressors, the refrigerant also having oil entrained therein, separating the oil entrained in the refrigerant, and returning more of the oil entrained in the refrigerant to a lead compressor of the plurality of compressors regardless of whether the lead compressor is operating. The method also includes connecting the oil sumps of all of the plurality of compressors such that oil is supplied from the lead compressor to at least one non-lead compressor of the plurality of compressors when the at least one non-lead compressor is operating.

The fluid machinery of changeable flow

特别是用于机动车辆发动机的润滑回路的泵的内齿轮流体机械包括具有外齿轮(2)和容纳在外齿轮(2)的轴向空腔(25)内并与外齿轮(2)啮合的内齿轮(4)的操作部件。外齿轮(2)与平移机构(8、22)相关，平移机构被配置成造成外齿轮相对于内齿轮(4)轴向滑动，以改变机械的流量和流体流速。平移机构(8、22)限定与机械的高压腔室(48)连通的第一流量调节空间(24)以及第二流量调节空间(15)，第二流量调节空间中存在的压力状况取决于与机械(1)连接的流体回路中的不同于高压腔室(48)的元件的操作状况。平移机构(8、22)造成外齿轮(2)响应于第一或第二流量调节空间(24、15)中存在的压力状态或者响应于两个空间中存在的压力状态的组合而滑动。本发明还涉及一种改变内齿轮流体机械的流量的方法。

Compressor with oil level sensing system

一种压缩机，包括壳体、第一温度传感器、第二温度传感器以及控制模块。壳体包括马达、压缩机构和润滑剂集存槽。第一温度传感器至少部分地被布置在壳体内并且被构造成在第一位置处测量润滑剂的第一温度。第二温度传感器至少部分地被布置在壳体内并且被构造成在竖直高于第一位置的第二位置处测量润滑剂的第二温度。控制模块与第一温度传感器和第二温度传感器通信，并且被构造成确定第一温度与第二温度之间的第一差。控制模块被构造成基于第一差来判断润滑剂集存槽中的润滑剂的液位是否低于预定液位。

scroll compressor

Compression device and a thermodynamic system comprising such a compression device

A compression device includes a first compressor and a second compressor mounted in parallel, each compressor including a leakproof enclosure including a low pressure portion containing a motor and an oil sump, an oil level equalization conduit putting into communication the oil sumps of the first and second compressors, and control means adapted for controlling the starting and the stopping of the first and second compressors. The first compressor includes first detection means coupled with the control means and adapted for detecting an oil level in the oil sump of the first compressor. The control means are adapted for controlling the stopping of the second compressor when the oil level detected by the first detection means falls below a first predetermined value.

Distributing system of compressed gas

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Oil level detecting device, and a compressor and an air conditioning system having the same

提供了一种油位检测设备、具有该设备的压缩机及空调。油位检测设备设置在压缩机中，该压缩机包括引入工作流体并压缩的压缩设备、机械式连接到该压缩设备并操作该压缩设备的驱动设备、以及内部容纳该压缩设备和该驱动设备并具有在低部处储油的储油空间的壳体。油位检测设备包括检测器，该检测器包括配置为附着于所述压缩机的所述壳体的支撑部和伸入所述壳体内的检测部。检测部的至少一个属性根据所述壳体内的油位而变化。油位检测设备还包括信号处理器，所述信号处理器包括具有至少一个参考属性的电子元件。信号处理器将所述检测部的至少一个属性与该电子元件的至少一个参考属性进行比较，并根据结果输出控制信号。

Method of monitoring a fluid level within a fluid volume

A method of monitoring a low water volume of a water circulation system is disclosed that includes detecting an auxiliary measurement associated with an ancillary device fluidly coupled with a reservoir of water in a water circulation system and then determining whether the ancillary device is performing under a low water volume operation. The low water volume operation is based upon a comparison between at least the detected auxiliary measurement of the ancillary device and a condition associated with a performance of the ancillary device under the low water volume operation.

Refrigerant compression device and refrigeration device

This refrigerant compression device comprises: a compressor including a compression mechanism unit that compresses a refrigerant, an electric mechanism unit that drives the compression mechanism unit, a shell that houses the compression mechanism unit and the electric mechanism unit, a retention unit that is provided inside the shell and that retains a mixed liquid of a liquid refrigerant including at least a refrigeration oil, and an electrode that is provided inside the retention unit and that opposes the inner surface of the shell; a relative permittivity detection unit that detects the relative permittivity of the mixed liquid present between the electrode and the shell opposing the electrode; an oil concentration detection unit that, on the basis of the detected relative permittivity, detects the oil concentration indicating the proportion of the refrigeration oil in the mixed liquid; and a control unit that, on the basis of the detected oil concentration, controls the operation of the compressor and/or the flow rate of the refrigerant in a refrigerant circuit to which the compressor is connected.

Oil equalization configuration for multiple compressor systems containing three or more compressors

A refrigeration system with at least three compressors connected in a circuit. Each compressor has a housing with an oil sump. The oil sump is adapted to contain oil that defines an oil level. A supply line supplies refrigerant and entrained oil to each of the at least three compressors. The oil sump of each compressor has at least one oil port. Each oil port is disposed at an elevation that is equal to or minimally higher than the level of oil to promote equalization of oil levels in each compressor. There are a plurality of separate conduits which are not directly connected, but connected through the oil sumps of separate compressors. At least one compressor includes an oil sump extension having connections for the separate conduits. Each oil port is connected to the separate conduits or an oil sump extension. Each separate conduit connects a pair of compressors.

Suction header arrangement for oil management in multiple-compressor systems

A refrigeration system with two or more compressors configured to compress a flow of refrigerant with oil entrained therein. A suction flow piping arrangement is configured to supply a flow of refrigerant and oil to the two or more compressors. The suction flow piping arrangement has a suction header configured to carry the flow of refrigerant and oil, and a primary compressor supply conduit connected to the suction header. The primary compressor supply conduit supplies refrigerant and oil to a first compressor of the two or more compressors. A secondary compressor supply conduit branches off from the suction header. The secondary compressor supply conduit supplies refrigerant to a second compressor of the two or more compressors. The primary compressor supply conduit is configured to supply more oil to the first compressor than the secondary compressor supply conduit supplies to the second compressor.

A pressure equalization-based control system for barrier and lubricating fluids for an undersea engine and pump module

Compressor oil level adjusting device

케이싱(2)의 저장부(2c)에 윤활유(L)를 저장한다. 윤활유인출관(15)의 일단을 저장부(2c)에, 타단을 스크롤기구(3)의 흡입실(14)에 연통한다. 윤활유인출관(15)의 유입단을 로터(9b)의 하단근방에서 저장부(3c)의 유면상한 위치에 개구한다. 윤활유(L)의 유면이 유면상한 위치까지 상승하면 케이싱(2)의 하부공간(2b)과 흡입실(14)과의 차압에 의해 윤활유(L)의 잉여분을 윤활유인출관(15)에 의해 저장부(2c)에서 스크롤기구(3)로 유도하고 유면을 저하시킨다.

System including high-side and low-side compressors

一种热泵系统，该热泵系统可以运行为在制热模式下使流体在第一热交换器与第二热交换器之间沿第一方向循环而在制冷模式中沿第二方向循环。该热泵系统可以包括吸入导管、低压侧压缩机和高压侧压缩机。低压侧压缩机和高压侧压缩机可以均与吸入导管流体连通。

Compressor assembly with liquid sensor

FLUID MACHINE WITH VARIABLE CAPACITY

Monitoring method of cooling medium and filling level in cooling equipment

Lubricant pump system

A lubricant pump system may include a lubricant pump controlled by a proportional valve. An actuating unit may be disposed in the lubricant pump and configured to control a delivery output of the lubricant pump. A first pressure chamber and at least one second pressure chamber may be configured to adjust the actuating unit against a spring, wherein the second pressure chamber is smaller than the first pressure chamber. In response to a failure of the proportional valve, the lubricant pump may be exclusively pressurized via the at least one second pressure chamber.

Compressor assembly with liquid sensor

一种压缩机，该压缩机可以包括壳体、压缩机构、第一温度传感器、第二温度传感器以及控制模块。壳体可以限定润滑剂池。压缩机构布置在壳体内并可以可操作成压缩工作流体。第一温度传感器可以至少部分地布置在壳体内的第一位置处。第二温度传感器可以至少部分地布置在壳体内的第二位置处，所述第二位置在垂直方向上高于所述第一位置。控制模块可以与第一温度传感器和第二温度传感器以及压力传感器进行通信，并且可以基于从第一温度传感器和第二温度传感器接收的数据来确定润滑剂池中的液位是否在预定水平之下。

Watertight chamber type electric vacuum pump and vacuum boosting brake system

An electric vacuum pump applied to a vacuum boosting brake system is provided. The pump has a water containing capacity that is greater than a backflow water capacity of an internal space defined in a pump housing which forms vacuum pressure. The pump includes a watertight chamber that is coupled to an exhaust port of a pump housing.

Oil control for climate-control system

Systems and methods for providing lubricant from a first compressor to a second compressor are provided. A control module receives a start command for a climate-control system having the first and second compressors, allows lubricant from the first compressor to flow into an inlet of the second compressor, turns the second compressor to an ON-mode, and prevents lubricant from the first compressor from flowing into the inlet of the second compressor after the second compressor has been in the ON-mode for a predetermined time period.

Suction header arrangement for oil management in multiple-compressor systems

一种制冷系统，其具有构造为压缩制冷剂流的两个或两个以上压缩机，所述制冷剂流具有夹带在所述制冷剂流中的油。吸入流管路装置构造为向所述两个或两个以上压缩机供应制冷剂和油流的吸入流管路装置。所述吸入流管路装置具有构造为承载所述制冷剂和油流的吸入头部，并且主压缩机供应管路连接至所述吸入头部。所述主压缩机供应管路向所述两个或两个以上压缩机的第一压缩机供应制冷剂和油。第二压缩机供应管路从所述吸入头部分支出。所述第二压缩机供应管路向所述两个或两个以上压缩机的第二压缩机供应制冷剂。所述主压缩机供应管路构造为向所述第一压缩机供应比所述第二压缩机供应管路向所述第二压缩机供应的更多的油。

Refrigerating equipment

Oil-level controller for compressor

A lubricant (L) is stored in a lubricant reservoir (2c) of a casing (2). One end of a lubricant takeout pipe (15) is in communication with the lubricant reservoir (2c) and the other end thereof is in communication with a suction chamber (14) of a scroll mechanism (3). An inlet end of the lubricant takeout pipe (15) opens at the same level as an oil-level high-limit point of the lubricant reservoir (2c) in the vicinity of a lower end of a rotor (9b). When the level of the lubricant (L) moves up to the high-limit point, an excess lubricant is introduced from the lubricant reservoir (2c) into the scroll mechanism (3), since there is produced a difference in pressure between a lower space (2b) of the casing (2) and the suction chamber (14). As a result, the level of the lubricant (L) drops.

Oil equalization configuration for multiple compressor systems containing three or more compressors

A method of operating a refrigeration system having at least three compressors, in which each compressor has an oil sump with oil at an oil level. The method includes separately connecting the oil sumps of the at least three compressors. Each separate connection allows oil flow only between the oil sumps of two of said compressors thereby preventing bypass flow. The method further includes flowing oil between oil sumps of the at least three compressors and along the separate connections to tend to equalize the oil levels among the oil sumps of the at least three compressors.

Liquid ring pump control

一种控制系统，包括：抽吸管线（34）；排放管线（38）；操作液体管线（40）；液环泵（10），其包括联接到抽吸管线（34）的抽吸输入、联接到排放管线（38）的排放输出和联接到操作液体管线（40）的液体输入；一个或多个调节设备（16），其配置成控制操作液体进入液环泵（10）内的流动；第一传感器（24），其配置成测量液环泵（2）的排放流体的第一参数；第二传感器（32），其配置成测量由液环泵（10）接收的操作液体的第二参数；以及控制器（20），其操作性地联接到传感器（24、32）和（多个）调节设备（16），并且配置成基于由传感器（24、32）产生的测量结果控制（多个）调节设备（16）。

A method for monitoring the oil level of an oil lubricated compressor, an oil level monitoring system for performing the method and a compressor system having such an oil level monitoring system

본 발명은, 뒤따르는 단계들을 포함하는, 오일 윤활식 압축기의 오일 레벨을 모니터링하기 위한 방법에 관한 것이다: 압축기 오일 레벨을 나타내는 오일 레벨이 그에 의해 감지되는 적어도 하나의 오일 레벨 센서(21, 21a, 21b)를 판독하는 단계, 판독된 오일 레벨을 검증하기 위한 적어도 하나의 사전 결정된 검증 기준의 충족을 체크하는 단계; 및 판독된 오일 레벨이 사전 결정된 오일 레벨에 도달하는지 또는 미달하는지에 따른 적어도 하나의 전달 기준(10a, 10b) 및 상기 적어도 하나의 검증 기준을 충족하는 경우, 오일 레벨 신호를 전달하는 단계.

Horizontal eddy compressor

一种卧式涡卷压缩机，在密闭容器内收容压缩机机构部和电动机部，从设于密闭容器的排出管排出压缩气体；其中：设置支承板，该支承板将上述密闭容器内分离成第1空间和第2空间；该第1空间收容上述压缩机机构部和上述电动机部；该第2空间设置上述排出管；在上述支承板的下方设置连通上述第1空间的底部与上述第2空间内的上述驱动轴上方的空间的连通道；在高速运行时油面差变大的场合，由该连通道对油面进行调整。为了使向轴承供油等的供油稳定，由设于接近油保有室的驱动轴轴端部的油泵供油。这样，在卧式涡卷压缩机中，可防止冷冻机油流出到压缩机机外，另外，可将油保有部室的油供给到轴承滑动部，同时，可减少随着工作流体的制冷剂气体的流动被带出到压缩机外的油。

Control system for liquid ring pumps

A control system comprising: a suction line (34); an exhaust line (38); an operating liquid line; a liquid ring pump (10) comprising a suction input coupled to the suction line (34), an exhaust output coupled to the exhaust line (38), and a liquid input coupled to the operating liquid line; a pump (16) configured to pump operating liquid into the liquid ring pump (10) via the operating liquid line and the liquid input; a motor (17) configured to drive the pump (16); a first sensor (24) configured to measure a first parameter, the first parameter being a parameter of an exhaust fluid of the liquid ring pump (10); a second sensor (22,32) configured to measure a second parameter, the second parameter being a parameter of a fluid received by the liquid ring pump (10); and a controller (20) operatively coupled to the first sensor (24), the second sensor (22,32), and the motor (17), and configured to control the motor (17) based on sensor measurements of the first sensor (24) and the second sensor (22,32). The control system advantageously tends to reduce or eliminate the wear caused by cavitations.

Compressor

【課題】冷媒回路で直列に接続される複数の圧縮機の内部の油量の均一化をより汎用性の高い態様で実現可能な技術を提供する。【解決手段】本開示の一実施形態に係る圧縮装置１００は、冷媒を循環させる冷媒回路１において、直列に接続される圧縮機１０，２０と、圧縮機１０，２０のうちの圧縮機１０の吐出経路５０に設けられ、上流に隣接する圧縮機１０から吐出される冷媒から油を分離し、油を分離後の冷媒を下流（吸入経路８０）に流出させる油分離器３０と、油分離器３０により分離された油を上流に隣接する圧縮機１０に戻す油戻し経路７０と、圧縮機１０に設けられる油排出口１０Ａと、圧縮機１０の油排出口１０Ａと油分離器３０の入口との間を接続する油排出経路６０と、を備える。【選択図】図１

Motor-driven compressor and controller therefor

A motor controller for a motor-driven compressor (10) includes a compressing body (11) for compressing and discharging a refrigerant and a motor (M) including a rotary shaft (12), the motor (M) for driving the compressing body (11) through the rotary shaft (12). A coil (252) of the motor (M) is arranged in a refrigerant containing area (181) in the motor-driven compressor (10). The motor controller includes a determining section (C1) for determining whether liquid refrigerant is present in the refrigerant containing area (181) and a modulation control section (27) for driving the motor (M) in accordance with three phase modulation control or two phase modulation control based on a determination result of the determining section (C1).

Feed flow formula gas compressor

本发明提供一种能够监视气液分离器内的液面高度的供液式气体压缩机。本发明的供油式空气压缩机包括：从由压缩机主体(1)排出的压缩空气中分离出油并将其贮存的油分离器；取样配管，其入口侧与油分离器的规定的高度位置连接，通过入口侧与出口侧的压力差而使得来自油分离器的规定的高度位置的流体在其中流动；检测取样配管中流动的或流过了取样配管的流体的压力的压力传感器；控制装置，其进行由压力传感器检测出的压力是否超过设定值(P1)的判断、以及是否低于设定值(P2)的判断，来判断取样配管中流动的流体是空气和油中的哪一者；和通知控制装置的判断结果的通知装置。

Oil control for climate-control system

Method for operating an oil level regulator

In the method according to the invention for operating an oil level regulator on a compressor, the oil level regulator monitors an oil level in the compressor and causes oil to be refilled when an oil deficiency is recognized. The oil level regulator provides operating recognition of the compressor in which a check is made as to whether the compressor is in a switched-on or switched-off state, the refilling with oil being carried out only when the compressor is in the switched-on state.

OIL DETECTION DEVICE FOR A COMPRESSOR AND THE SAME COMPREHENSIVE COMPRESSOR

Ölerkennungsgerät (100) für einen Kompressor (10), umfassend:eine Sensoreinheit (110), umfassend mehrere kapillare Röhren (111), die an einem inneren Raum eines Gehäuses (11) des Kompressors (10) angeordnet sind, in dem eine spezifische Ölmenge aufgenommen ist, um mit dem Öl in Kontakt zu sein;eine Regulierungseinheit (120), die an jede der mehreren kapillaren Röhren (111) zum Anpassen des Drucks der mehreren kapillaren Röhren (111) derart angeschlossen ist, dass das Öl in die mehreren kapillaren Röhren (111) eingeführt ist; undeine Erkennungseinheit (130), die elektrisch an die Sensoreinheit (110) und die Regulierungseinheit (120) angeschlossen ist, um den Druck der mehreren kapillaren Röhren (111) zu messen, der von der Regulierungseinheit (120) derart angepasst ist, dass der Zustand des Öls basierend auf Ergebnissen der Druckmessung erkannt ist, dadurch gekennzeichnet, dass wenigstens eine der mehreren kapillaren Röhren (111) einen kleineren Innendurchmesser aufweist. Oil detection device (100) for a compressor (10), comprising: a sensor unit (110) comprising a plurality of capillary tubes (111) arranged at an inner space of a housing (11) of the compressor (10) in which a specific amount of oil is accommodated to be in contact with the oil; a regulating unit (120) connected to each of the plurality of capillary tubes (111) for adjusting the pressure of the plurality of capillary tubes (111) such that the oil in the plurality of capillary tubes (111) is inserted; anda detection unit (130) electrically connected to the sensor unit (110) and the regulation unit (120) to measure the pressure of the plurality of capillary tubes (111) adjusted by the regulation unit (120) such that the state of the oil is detected based on results of the pressure measurement, characterized in that at least one of the plurality of capillary tubes (111) has a smaller inner diameter.

Air conditioner for automobile

Pump having vacuum and self-priming and booster functions

The present invention relates to a vacuum and self-priming pressure pump, formed of a circulation flow path (90) connecting an upper portion chamber (60) and a lower portion chamber (70), wherein a supporting valve (140) opening and closing a circulation flow path (90) is installed in the lower portion chamber (70). The supporting valve (140) is operated by a liquid level of the lower portion chamber (70) and a pressure relationship between the upper portion chamber (70) and the lower portion chamber (70). The pump is operated as a self-priming pump by water injected to the lower portion chamber (70), and has an improved rotor (20) sealing function such that the pump can be used as a vacuum pump and a pressure pump.

Method for detecting and monitoring condensate in an oil system of an oil-injected compressor or vacuum pump

Computer-implemented method for detecting condensate in an oil system (2) of a compressor (1 ), having an inlet (4) and an outlet (5), characterized in that the method comprises these steps: - determining the humidity at the inlet (4) and at the outlet (5) or downstream of the outlet (5) of the compressor (1); - determining the amount of water vapor that enters and exits the compressor (1) based on the humidity determined at the inlet (4) and the outlet (5) or downstream of the outlet (5); - determining the amount of condensate that remains in the compressor (1) by determining the difference between the amount of condensate that enters and exits the compressor (1); - storing the amount of condensate that remains; - repeating the aforementioned steps at regular intervals and storing the amount of condensate and how long said condensate remains in the compressor (1).

Compression apparatus

Automatic oil level retention system for compressor and method for controlling same

An automatic oil level retention system for a compressor and a method for controlling a same, including: a normal oil return mode and an auxiliary oil return mode. When a lubricating oil liquid level monitored by a liquid level detection unit in real time is above a required liquid level height, the system initiates only the normal oil return mode; and when the lubricating oil liquid level monitored by the liquid level detection unit in real time is below the required liquid level height, the system initiates the auxiliary oil return mode, and the auxiliary oil return mode is closed and the normal oil return mode is initiated after the lubricating oil liquid level monitored in real time is lifted above the required liquid level height.

Pompe à vide

Pompe à vide (1) comportant un stator (2) comportant au moins un étage de pompage (T1-T5), deux arbres (4) portant des rotors (5) configurés pour tourner dans l’étage de pompage (T1-T5) autour d’un axe de rotation (I-I) respectif, au moins un carter d’huile (6) comprenant une chambre configurée pour contenir un lubrifiant liquide destiné à lubrifier des éléments (10, 11) permettant la rotation des arbres (4) et un dispositif de détermination du niveau de lubrifiant liquide (12) configuré pour déterminer une information représentative du niveau de lubrifiant liquide contenu dans la chambre du carter d’huile (6) à partir de la mesure différentielle de pression entre la pression exercée par le lubrifiant liquide et la pression gazeuse régnant dans le volume de la chambre du carter d’huile (6) au-dessus du niveau de lubrifiant d’huile. Figure d’abrégé : figure 1

Control system for liquid ring pumps

A control system comprising: a suction line; an exhaust line; an operating liquid line; a liquid ring pump comprising a suction input coupled to the suction line, an exhaust output coupled to the exhaust line, and a liquid input coupled to the operating liquid line; a pump configured to pump operating liquid into the liquid ring pump via the operating liquid line and the liquid input; a motor configured to drive the pump; a first sensor configured to measure a first parameter, the first parameter being a parameter of an exhaust fluid of the liquid ring pump; a second sensor configured to measure a second parameter, the second parameter being a parameter of a fluid received by the liquid ring pump; and a controller operatively coupled to the first sensor, the second sensor, and the motor, and configured to control the motor based on sensor measurements of the first sensor and the second sensor. The control system advantageously tends to reduce or eliminate the wear caused by cavitations.

Kältemittelkompressor mit einer Ölstandssensoranordnung

Der Kältemittelkompressor umfasst ein Kompressorgehäuse (2); einen Ölsumpf (13), der in dem Kompressorgehäuse (2) angeordnet ist; und eine Ölstandssensoranordnung (14) zum Erfassen eines Ölstands in dem Ölsumpf (13), wobei die Ölstandssensoranordnung (14) ein röhrenförmiges Element (16), das an dem Kompressorgehäuse (2) befestigt ist, und ein schwimmendes Element (17), das das röhrenförmige Element (16) umgibt und in Bezug auf das röhrenförmige Element (16) beweglich angebracht ist, umfasst. Das Kompressorgehäuse (2) weist eine Durchgangsöffnung (24) auf, und die Abmessungen des rohrförmigen Elements (16), des schwimmenden Elements (17) und der Durchgangsöffnung (24) sind derart definiert, dass ein Einsetzen und ein Entfernen des rohrförmigen Elements (16) und des schwimmenden Elements (17) in das und aus dem Kompressorgehäuse (2) durch die Durchgangsöffnung (24) ermöglicht ist.

包括油位传感器设备的制冷剂压缩机

制冷剂压缩机包括：压缩机壳体(2)；油槽(13)，所述油槽布置在所述压缩机壳体(2)中；以及油位传感器设备(14)，所述油位传感器设备被构造成检测所述油槽(13)中的油位，所述油位传感器设备(14)包括管状元件(16)和浮动元件(17)，所述管状元件固定到所述压缩机壳体(2)，所述浮动元件环绕所述管状元件(16)并且相对于所述管状元件(16)能够移动地安装。所述压缩机壳体(2)包括通道开口(24)，并且所述管状元件(16)的尺寸、所述浮动元件(17)的尺寸和所述通道开口(24)的尺寸被限定为允许所述管状元件(16)和所述浮动元件(17)通过所述通道开口(24)插入到所述压缩机壳体(2)中以及移出所述压缩机壳体。

Un système à compresseurs multiples ayant des soupapes normalement ouvertes dans des raccordements d’équilibrage d’huile

Le système à compresseurs multiples (7) comprend une pluralité de compresseurs couplés en parallèle (8) ; des conduites de raccordement d’entrée (15) reliées chacune à un raccord d’aspiration de fluide frigorigène d’un compresseur (8) respectif ; des conduites de raccordement de sortie (17) reliées chacune à un raccord de refoulement de fluide frigorigène d’un compresseur (8) respectif ; une conduite d’équilibrage d’huile commune (18) et des conduites de raccordement d’équilibrage (19) reliant chacune la conduite d’équilibrage d’huile commune (18) à un raccordement d’équilibrage d’huile (21) d’un compresseur (8) respectif ; et des soupapes normalement ouvertes à ressort (25) étant agencées chacune dans une conduite de raccordement d’équilibrage respective (19) ou dans un raccordement d’équilibrage d’huile (21) d’un compresseur (8) respectif et étant configurées chacune pour se fermer lorsqu’une différence de pression entre une pression régnant dans le volume basse pression du compresseur (8) respectif et une pression régnant dans la conduite d’équilibrage d’huile commune (18) atteint une valeur prédéterminée. Figure 3

System for a Utility Vehicle Comprising a Compressor and an Electric Motor

A system for a utility vehicle has a compressor, an electric motor and an electronic drive system. The electric motor drives the compressor. The electric motor and the electronic drive system have a common housing. The electric motor has a rotor which at least partially surrounds the drive shaft of the compressor.

Climate-control system

給液式気体圧縮機及び気液分離器

気液分離器を備える給液式圧縮機の液面レベルを動的に監理する。給液式の圧縮機本体と、吐出圧縮気体から液体を分離して貯留する気液分離器と、貯留された液体を圧縮機本体へ供給する液体配管系統とを備えた給液式気体圧縮機であって、気液分離器の内部空間に延在し、配置位置が高さ方向で異なる少なくとも２つの孔部を内部空間側に有して液体配管系統と連通する内部配管を備え、液体配管系統に流れる流体の圧力又は温度を検出する検出器と、検出器で検出された圧力又は温度が予め設定された第１の設定値を上回ることがあるかどうかの判定と検出器で検出された圧力又は温度が予め前記第１の設定値より小さくなるように設定された第２の設定値を下回ることがあるかどうかの判定のうちの少なくとも一方を行うことにより、液体配管系統に流れる流体が気体及び液体のうちのいずれであるかを判定する。

供液式气体压缩机和气液分离器

本发明动态地管理具有气液分离器的供液式压缩机的液面水平。供液式气体压缩机包括供液式的压缩机主体、从排出压缩气体中分离液体并贮存的气液分离器、对压缩机主体供给贮存的液体的液体配管系统，包括在气液分离器的内部空间中延伸的、在内部空间侧具有配置位置在高度方向上不同的至少2个孔部而与液体配管系统连通的内部配管，还包括检测液体配管系统中流动的流体的压力或温度的检测器，通过进行是否存在用检测器检测出的压力或温度超过预先设定的第一设定值的情况的判断和是否存在用检测器检测出的压力或温度低于预先设定为小于上述第一设定值的第二设定值的情况的判断中的至少一者，判断液体配管系统中流动的流体是气体和液体中的哪一者。

供液式气体压缩机和气液分离器

本发明动态地管理具有气液分离器的供液式压缩机的液面水平。供液式气体压缩机包括供液式的压缩机主体、从排出压缩气体中分离液体并贮存的气液分离器、对压缩机主体供给贮存的液体的液体配管系统，包括在气液分离器的内部空间中延伸的、在内部空间侧具有配置位置在高度方向上不同的至少2个孔部而与液体配管系统连通的内部配管，还包括检测液体配管系统中流动的流体的压力或温度的检测器，通过进行是否存在用检测器检测出的压力或温度超过预先设定的第一设定值的情况的判断和是否存在用检测器检测出的压力或温度低于预先设定为小于上述第一设定值的第二设定值的情况的判断中的至少一者，判断液体配管系统中流动的流体是气体和液体中的哪一者。

Liquid level height detection in a gas-liquid separator of a liquid supply type gas compressor

The liquid level of a liquid supply compressor including a gas-liquid separator is dynamically monitored. A liquid supply gas compressor includes a compressor body; a gas-liquid separator separates liquid from compressed gas, to store the liquid; a liquid piping system supplies liquid stored to the compressor body; an internal pipe extends in an internal space of the gas-liquid separator, and includes at least two hole portions, with different disposition positions in a height direction, on an internal side to communicate with the piping system; and a sensor detecting pressure or temperature of fluid flowing through the piping system.

Multi-compressor system with normally-open valves in oil balancing connections

The multi-compressor system (7) has a plurality of parallelly coupled compressors (8); inlet connection lines (15) each connected to a refrigerant suction fitting of a respective compressor (8); outlet connection lines (17) each connected to a refrigerant discharge fitting of a respective compressor (8); a common oil balancing line (18) and balancing connection lines (19) each connecting the common oil balancing line (18) to an oil balancing connection (21) of a respective compressor (8); and spring-loaded normally-open valves (25) each being arranged within a respective balancing connection line (19) or within an oil balancing connection (21) of a respective compressor (8) and each being configured to close when a pressure difference between a pressure prevailing in the low pressure volume of the respective compressor (8) and a pressure prevailing in the common oil balancing line (18) reaches a predetermined value.

給液式氣體壓縮機及氣液分離器

本發明動態地監管具備氣液分離器之給液式壓縮機之液面水平。本發明係一種給液式氣體壓縮機，其具備：給液式之壓縮機本體、將液體自噴出壓縮氣體中分離並貯存之氣液分離器、及朝壓縮機本體供給所貯存之液體之液體配管系統，且具備：內部配管，該內部配管延伸至氣液分離器之內部空間，於內部空間側具有配置位置於高度方向上不同之至少2個孔部，且連通至與液體配管連通之內部配管液體配管系統；及檢測流入液體配管系統之流體之壓力或溫度之檢測器，並進行以下兩種判定中之至少一種，即，利用檢測器檢測出之壓力或溫度是否超過預先設定之第1設定值的判定、與利用檢測器檢測出之壓力或溫度是否低於以小於上述第1設定值之方式預先設定之第2設定值的判定，藉此判定流入液體配管系統之流體為氣體及液體之哪一種。

給液式気体圧縮機

[UNK]

給油式空気圧縮機

Method for operating a vacuum pump

Gas compressor

A gas compressor includes a compression mechanism, a separator tank that introduces lubricating oil to be supplied to the compression mechanism and a mixed fluid of a working fluid and the lubricating oil discharged from the compression mechanism and separates the lubricating oil, an oil cooler that cools the lubricating oil from the separator tank, an oil circulation path that supplies the cooled lubricating oil to the compression mechanism, and a motor that drives the compression mechanism and is isolated from the oil circulation path. Further, the gas compressor includes a suction temperature sensor that detects a suction temperature of the working fluid, a discharge pressure sensor that detects a discharge pressure of the compressed working fluid, a rotation speed sensor that detects a rotation speed of the motor, and a lubricating oil state estimation unit that estimates a temperature of the lubricating oil based on the detected suction temperature, discharge pressure, and rotation speed of the motor, in which the lubricating oil state estimation unit estimates a deterioration state of the lubricating oil based on the estimated temperature of the lubricating oil.

給液式気体圧縮機及び気液分離器

気液分離器を備える給液式圧縮機の液面レベルを動的に監理する。給液式の圧縮機本体と、吐出圧縮気体から液体を分離して貯留する気液分離器と、貯留された液体を圧縮機本体へ供給する液体配管系統とを備えた給液式気体圧縮機であって、気液分離器の内部空間に延在し、配置位置が高さ方向で異なる少なくとも２つの孔部を内部空間側に有して液体配管系統と連通する内部配管を備え、液体配管系統に流れる流体の圧力又は温度を検出する検出器と、検出器で検出された圧力又は温度が予め設定された第１の設定値を上回ることがあるかどうかの判定と検出器で検出された圧力又は温度が予め前記第１の設定値より小さくなるように設定された第２の設定値を下回ることがあるかどうかの判定のうちの少なくとも一方を行うことにより、液体配管系統に流れる流体が気体及び液体のうちのいずれであるかを判定する。

油潤滑式圧縮機の油面監視のための方法、該方法を実施するための油面監視システムならびにそのような油面監視システムを備えた圧縮機システム

油潤滑式圧縮機の油面監視のための方法は、以下のステップ：圧縮機油面を表す油面が検出される少なくとも１つの油面センサ（２１，２１ａ，２１ｂ）を読み取るステップと、読み取られた油面を検証するために少なくとも１つの予め設定された検証基準の充足を検査するステップと、読み取られた油面が、予め定められた油面の到達またはその下回りに従って少なくとも１つの転送基準（１０ａ，１０ｂ）および少なくとも１つの検証基準を満たす場合に油面信号を転送するステップとを含む。

Compression apparatus

A technique that allows a plurality of series-connected compressors in a refrigerant circuit to have equal amounts of oil in a more versatile manner is provided. A compression apparatus according to an embodiment in the disclosure includes series-connected compressors 10, 20 in a refrigerant circuit 1 that is to circulate a refrigerant; an oil separator 30 is provided in a discharge passage 50 of the compressor 10 of the compressors 10, 20, and separates oil from the refrigerant discharged from the compressor 10 and causes the refrigerant separated from the oil to flow downstream (intake passage 80); an oil return passage 70 returns the oil separated by the oil separator 30 to the compressor 10 neighboring upstream; an oil discharge outlet 10A is provided in the compressor 10; and an oil discharge passage 60 connects the oil discharge outlet 10A to an inlet of the oil separator 30.

Exzenterschneckenpumpe

Die Erfindung betrifft eine Exzenterschneckenpumpe mit zumindest einem Stator (1), einem in dem Stator (1) rotierenden Rotor (2), einem Antrieb (3) für den Rotor (2), einem an den Stator (1) angeschlossenen Sauggehäuse (4), einer an den Antrieb (3) angeschlossenen Verbindungswelle (9), wobei die Verbindungswelle (9) mit einer Wellenabdichtung (13) abgedichtet ist, wobei zwischen Sauggehäuse (4) und Antrieb (3) ein Verbindungsgehäuse (14) angeordnet ist, an welches die Wellenabdichtung (13) angeschlossen ist. Diese Pumpe ist dadurch gekennzeichnet, dass das Verbindungsgehäuse (14) als geschlossenes Gehäuse flüssigkeitsdicht ausgebildet ist.

Methods and systems for lubricating a transport climate control system having an auxiliary sump

A climate control system includes a compressor which includes a compressor housing, a compressor element provided in the compressor housing, a lubricant circuit, and an auxiliary sump. The lubricant circuit includes a lubricant sump provided in the compressor housing. The auxiliary sump is in fluid communication with the lubricant sump. A method for maintaining lubrication supply for a compressor of a climate control system includes transferring lubricant from the auxiliary sump to the lubricant sump of the compressor when a height of the lubricant in the auxiliary sump is greater than a height in the lubricant sump and returning the lubricant from the lubricant sump to the auxiliary sump when a height of the lubricant in the lubricant sump is higher than a height of a predetermined minimum level in the lubricant sump. The lubricant in the auxiliary sump and lubricant sump are equalized by gravity.

Un système à compresseurs multiples ayant des soupapes normalement ouvertes dans des raccordements d’équilibrage d’huile

Le système à compresseurs multiples (7) comprend une pluralité de compresseurs couplés en parallèle (8) ; des conduites de raccordement d’entrée (15) reliées chacune à un raccord d’aspiration de fluide frigorigène d’un compresseur (8) respectif ; des conduites de raccordement de sortie (17) reliées chacune à un raccord de refoulement de fluide frigorigène d’un compresseur (8) respectif ; une conduite d’équilibrage d’huile commune (18) et des conduites de raccordement d’équilibrage (19) reliant chacune la conduite d’équilibrage d’huile commune (18) à un raccordement d’équilibrage d’huile (21) d’un compresseur (8) respectif ; et des soupapes normalement ouvertes à ressort (25) étant agencées chacune dans une conduite de raccordement d’équilibrage respective (19) ou dans un raccordement d’équilibrage d’huile (21) d’un compresseur (8) respectif et étant configurées chacune pour se fermer lorsqu’une différence de pression entre une pression régnant dans le volume basse pression du compresseur (8) respectif et une pression régnant dans la conduite d’équilibrage d’huile commune (18) atteint une valeur prédéterminée. Figure 3

気体圧縮機

【課題】気体圧縮機内を循環している油の余寿命を安価な手段で知る。【解決手段】気体圧縮機は、圧縮機構部と、圧縮機構部に供給される潤滑油と、圧縮機構部から吐出される作動流体と潤滑油との混合流体を導入して潤滑油を分離するセパレータタンクと、セパレータタンクからの潤滑油を冷却するオイルクーラと、冷却された潤滑油を圧縮機構部に供給する油循環路と、圧縮機構部を駆動すると共に油循環路からは隔離されているモータと、を備える。また、作動流体の吸込温度を検出する吸込温度センサと、圧縮された作動流体の吐出圧力を検出する吐出圧力センサと、モータの回転速度を検出する回転速度センサと、検出された吸込温度、吐出圧力及びモータの回転速度に基づいて、潤滑油の温度を推定する潤滑油状態推定部と、を備え、潤滑油状態推定部は、推定された潤滑油の温度に基づいて潤滑油の劣化状態を推定する。【選択図】図１