REFRIGERANT SYSTEM WITH ADAPTIVE HOT GAS REHEAT

A refrigerant system incorporates a hot gas reheat circuit. The hot gas reheat circuit includes a reheat valve for selectively tapping at least a portion of refrigerant from a location downstream of a compressor and upstream of a condenser, and through a reheat heat exchanger. At least one refrigerant flow control device controls the amount of refrigerant passing through the reheat heat exchanger. A control for the refrigerant system is operable to receive inputs from an indoor environment, and to control the amount of refrigerant passing through the reheat heat exchanger to achieve desired temperature and humidity in the conditioned environment.

Apparatus and method for controlling the temperature of an electronic device

An apparatus for controlling the temperature of an electronic device. The apparatus comprises a refrigeration system including a compressor and a multi-pass heat exchanger. The refrigeration system is operative to circulate a refrigerant fluid through a fluid flow loop such that the refrigerant fluid will change between gaseous and liquid states to alternately absorb and release thermal energy. The refrigerant fluid is pre-cooled in the heat exchanger by a pre-cooling refrigerant stream. A thermal head is connected into the fluid flow loop and has a temperature controlled surface.

VAPOR COMPRESSION SYSTEM WITH DEFROST SYSTEM

A vapor compression system including a circuit having operably coupled thereto, in serial order, a compressor, an interior heat exchanger, a second heat exchanger, an expansion device, an exterior heat exchanger, and an accumulator. A first bypass line extends from circuit between interior exchanger and second exchanger to between expansion device and third exchanger. A second bypass line extends from circuit between the exterior exchanger and accumulator to accumulator, and is operably coupled to second exchanger. A bypass expansion device is operably coupled to second bypass line. A first valve is coupled to first bypass line, and a second valve is coupled to second bypass line. During a defrost cycle first valve is in a first position wherein refrigerant flowing from interior exchanger flows to exterior exchanger through first bypass line, and second valve is in a second position wherein refrigerant flowing from exterior exchanger flows through second bypass line.

AIR CONDITIONING SYSTEM AND CONTROL METHOD THEREFOR

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

ТЕПЛОНАСОСНОЕ СУШИЛЬНОЕ УСТРОЙСТВО ДЛЯ БЕЛЬЯ

1. Сушильное устройство для белья с теплонасосной системой, содержащей замкнутый хладагентный контур (10) для хладагента и воздушный контур (12) для осушающего воздуха, при этом- хладагентный контур (10) содержит компрессор (14), первый теплообменник (16), ламинирующее устройство (18) и второй теплообменник (20),- воздушный контур (12) содержит первый теплообменник (16), второй теплообменник (20), сушильную камеру (52) и, по меньшей мере, один вентилятор (54),- хладагентный контур (10) и воздушный контур (12) термически соединены первым теплообменником (16) и вторым теплообменником (20),- первый теплообменник (16) служит для нагрева воздушного потока и охлаждения хладагента,- второй теплообменник (20) служит для охлаждения воздушного потока и нагрева хладагента,- хладагентный контур (10) содержит сторону (24) низкого давления между выходом из ламинирующего устройства (18) и входом в компрессор (14),- хладагентный контур (10) содержит сторону (26) высокого давления между выходом из компрессора (14) и входом в ламинирующее устройство (18), причем- сторона (24) низкого давления и сторона (26) высокого давления термически соединены, по меньшей мере, одним внутренним теплообменником (22, 40, 42),отличающееся тем, что хладагентный контур (10) содержит, по меньшей мере, одну обводную линию (28; 38) для шунтирования, по меньшей мере, части стороны (24) низкого давления и/или стороны (26) высокого давления внутреннего теплообменника (22; 40, 42).2. Сушильное устройство по п.1, отличающееся тем, что обводная линия (28; 38) является, по меньшей мере, частично закрываемой, по меньшей мере, одним регулирующим устройством (30, 32; 34; 36; 46, 48, 50).3. Сушильное устройство по п.1, отличающееся тем, что внутренний � РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК D06F 58/20 (13) 2013 142 435 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2013142435/12, 07.02.2012 (71) Заявитель(и): ЭЛЕКТРОЛЮКС ХОУМ ПРОДАКТС КОРПОРЕЙШН Н.В. ...

Binary refrigeration device

Wärmepumpe mit einem kältemittelgekühlten Inverter

Wärmepumpe (1) mit einem Verdichter (2), und einem mit dem Verdichter (2) verbundenen elektronisch kommutierten Elektromotor (3) zum Antrieb des Verdichters (2), wobei die Wärmepumpe eine mit dem Elektromotor (3) verbundene Leistungsendstufe (4) aufweist, welche ausgebildet ist, den Elektromotor (3) zu bestromen, und die Leistungsendstufe (4) mit einem Abschnitt (5) eines Kältemittelkreislaufs (5, 21, 22, 23, 24, 27) der Wärmepumpe (1) wärmeleitend verbunden ist, so dass von der Leistungsendstufe (4) erzeugte Verlustwärme an den Kältemittelkreislauf (5, 21, 22, 23, 24, 27) abgegeben werden kann, wobei die Wärmepumpe (1) wenigstens einen Temperatursensor (8) aufweist, wobei der Temperatursensor (8) angeordnet ist, eine Temperatur der Leistungsendstufe (4) zu erfassen und ein die Temperatur repräsentierendes Temperatursignal zu erzeugen, wobei der Kältemittelkreislauf (21, 22, 23, 24, 27) eine Bypass-Fluidleitung (15) und wenigstens ein steuerbar ausgebildetes Ventil (16, 36, 55) aufweist ...

VARIABLE REFRIGERANT FLOW SYSTEM

An apparatus includes a compressor, a first heat exchanger, a reheater, a first valve, a second heat exchanger, and a blower. The compressor compresses a refrigerant. The blower moves air proximate the second heat exchanger to the reheater. During a first mode of operation: the first heat exchanger removes heat from a first portion of the refrigerant from the compressor, the first valve opens such that a second portion of the refrigerant from the compressor flows to the reheater, the second heat exchanger uses the first portion of the refrigerant from the first heat exchanger and the second portion of the refrigerant from the reheater to cool air proximate the second heat exchanger, and the reheater uses the second portion of the refrigerant from the compressor to heat the air moved by the blower.

MOTOR VEHICLE AIR CONDITIONING CIRCUIT

La présente invention concerne un circuit de climatisation (1) dans lequel circule un fluide réfrigérant et comportant : - un compresseur principal (3), - un premier échangeur de chaleur (5) disposé en aval du compresseur principal (3), - un deuxième échangeur de chaleur (9) disposé en amont du compresseur principal (3), - un échangeur de chaleur interne (13) entre le fluide réfrigérant en sortie du premier échangeur de chaleur (5) et le fluide réfrigérant en sortie du deuxième échangeur de chaleur (9), et - une turbine de détente (7) disposée en amont du deuxième échangeur de chaleur (9), ledit circuit de climatisation (1) comprenant en outre une branche de contournement (A) de l'échangeur de chaleur interne (13). The present invention relates to an air conditioning circuit (1) in which a refrigerant circulates and comprising: - a main compressor (3), - a first heat exchanger (5) disposed downstream of the main compressor (3), - a second heat exchanger (9) arranged upstream of the main compressor (3), - an internal heat exchanger (13) between the refrigerant at the outlet of the first heat exchanger (5) and the refrigerant at the outlet of the second heat exchanger (9), and - an expansion turbine (7) disposed upstream of the second heat exchanger (9), said air conditioning circuit (1) further comprising a bypass branch (A) of the internal heat exchanger ( 13).

A plate heat exchanger

A plate heat exchanger (500) comprises a plurality of heat exchanger plates (510, 520, 530, 540) provided with a pressed pattern adapted to provide contact points keeping the heat exchanger plates on a distance from one another such that interplate flow channels are formed between said plates, said heat exchanger being provided with interplate flow channels (510-520, 530-540) for a first medium exchanging heat with a second medium in interplate flow channels (520-530) and a third medium in interplate flow channels (540-510), wherein the interplate flow channels are in selective fluid communication with port openings (550, 560, 570, 580, 630, 620) for the first medium, the second medium and the third medium. The heat exchanger (500) comprises first and second integrated suction gas heat exchanger sections (ISGHX1, ISGHX2) provided in the vicinity of port openings (550, 560, 570, 580) for the second medium and third medium.

A HEAT PUMP LAUNDRY DRYER

The present invention relates to a laundry dryer with a heat pump system. The heat pump system comprises a closed refrigerant circuit (10) for a refrigerant and a drying air circuit (12) for drying air. The refrigerant circuit (10) includes a compressor (14) and lamination means (18). The air stream circuit (12) includes a laundry drum (52) and at least one fan (52). The refrigerant circuit (10) and the air stream circuit (12) are thermally coupled by a first heat exchanger (16) for heating up the air stream and cooling down the refrigerant and a second heat exchanger for cooling down the air stream and heating up the refrigerant (20). The refrigerant circuit (10) comprises a low pressure side (24) between the outlet of the lamination means (18) and the inlet of the compressor (14). The refrigerant circuit (10) comprises a high pressure side (26) between the outlet of the compressor (14) and the inlet of the lamination means (18). The low pressure side (24) and the high pressure side (26 ...

REFRIGERANT SYSTEM WITH ADAPTIVE HOT GAS REHEAT

Piping structure with inner heat exchanger and refrigeration cycle device having the same

A piping structure for a refrigerant cycle device includes an inner heat exchanger, and a bypass pipe through which refrigerant flows while bypassing the inner heat exchanger. The inner heat exchanger has a first flow passage in which high-pressure refrigerant before being decompressed flows and a second flow passage in which low-pressure refrigerant after being decompressed flows. The refrigerant cycle device includes plural low-pressure side heat exchangers, and the plural low-pressure side heat exchangers are located such that refrigerant from a part of the low-pressure side heat exchangers flows through the second flow passage of the inner heat exchanger, and refrigerant from the other part of the low-pressure side heat exchangers flows through the bypass pipe while bypassing the inner heat exchanger.

MOTOR VEHICLE AIR CONDITIONING CIRCUIT

APPARATUS AND METHOD FOR CONTROLLING THE TEMPERATURE OF AN ELECTRONIC DEVICE

An apparatus for controlling the temperature of an electronic device. The apparatus comprises a refrigeration system including a compressor and a multi-pass heat exchanger. The refrigeration system is operative to circulate a refrigerant fluid through a fluid flow loop such that the refrigerant fluid will change between gaseous and liquid states to alternately absorb and release thermal energy. The refrigerant fluid is pre-cooled in the heat exchanger by a pre-cooling refrigerant stream. A thermal head is connected into the fluid flow loop and has a temperature controlled surface.

APPARATUS AND METHOD FOR CONTROLLING THE TEMPERATURE OF AN ELECTRONIC DEVICE

An apparatus for controlling the temperature of an electronic device. The apparatus comprises a refrigeration system including a compressor and a multi-pass heat exchanger. The refrigeration system is operative to circulate a refrigerant fluid through a fluid flow loop such that the refrigerant fluid will change between gaseous and liquid states to alternately absorb and release thermal energy. The refrigerant fluid is pre-cooled in the heat exchanger by a pre-cooling refrigerant stream. A thermal head is connected into the fluid flow loop and has a temperature controlled surface.

COOLING SYSTEM WITH PARTLY FLOODED LOW SIDE HEAT EXCHANGER

ABSTRACT A cooling system is provided that partially floods one of its freezers (e.g., the ice cream freezer) such that the refrigerant discharged by the freezer includes a liquid component. In this manner, the freezers in the system can operate at the same saturated suction temperature. A heat exchanger can be used to transfer heat to the liquid component of the discharge to evaporate the liquid component. Date Recue/Date Received 2020-12-10

METHOD AND APPARATUS FOR CHARGE COMPENSATOR REHEAT VALVE

A heating, ventilation, and air conditioning ("HVAC") system includes an evaporator coil and a compressor fluidly coupled to the evaporator coil via a suction line. A condenser coil is fluidly coupled to the compressor via a discharge line and fluidly coupled to a metering device via a liquid line. A charge compensator is fluidly coupled to the liquid line via a connection line. A charge compensator re-heat valve is disposed in the connection line.

Cascade refrigeration system

AIR CONDITIONER AND CONTROL METHOD FOR SAME

The present invention relates to an air conditioner and a control method for the same, which are to improve rapid heating performance without using a large compressor. According to the present invention, the air conditioner includes: an inner unit having a first heat exchanger; an outer unit having a compressor and a second heat exchanger; a refrigerant cycle having a refrigerant circulation flow path between the inner unit and the outer unit; a flow changing unit changing the flow of a refrigerant in the refrigerant cycle; and a control unit controlling the flow changing unit so that a part of the refrigerant discharged from the compressor flows into an inlet of the compressor and the rest part of the refrigerant discharged from the compressor flows to at least a heat exchanger among the first heat exchanger and the second heat exchanger. COPYRIGHT KIPO 2016 (AA) Slide direction (B1) To a discharge side pipe (B2) To an outdor heat exchanger (B3) To a suction side pipe (B4) To an indoor ...

Rohrleitungskonstruktion mit Innenwärmetauscher und Kühlkreisvorrichtung damit

Eine Rohrleitungskonstruktion für eine Kühlkreisvorrichtung enthält einen Innenwärmetauscher (160) und ein Bypassrohr (171), durch den ein Kältemittel am Innenwärmetauscher vorbeiströmt. Der Innenwärmetauscher weist einen ersten Strömungskanal (160a), in dem ein Hochdruckkältemittel vor seiner Dekompression strömt, und einen zweiten Strömungskanal (162), in dem ein Niederdruckkältemittel nach seiner Dekompression strömt, auf. Die Kühlkreisvorrichtung enthält mehrere niederdruckseitige Wärmetauscher (141, 142, 143) und die mehreren niederdruckseitigen Wärmetauscher sind so angeordnet, dass das Kältemittel aus einem Teil der niederdruckseitigen Wärmetauscher durch den zweiten Strömungskanal des Innenwärmetauschers strömt und das Kältemittel aus dem übrigen Teil der niederdruckseitigen Wärmetauscher durch das Bypassrohr am Innenwärmetauscher vorbeiströmt.

Refrigeration apparatus

Provided is a freezing unit capable of minimizing bias of surplus refrigerant in high-pressure receivers, even when a plurality of heat-generating units having high-pressure receivers are connected. A first heat source unit (2a) and a second heat source unit (2b) have compressors (21a, 21b), heat-source-side heat exchangers (24a, 25a, 24b, 25b), receivers (80a, 80b), receiver liquid surface detection tubes (43a, 43b) for detecting approaching fullness, receiver gas release tubes (41a, 41b), and motorized valves (42a, 42b) disposed in the receiver gas release tubes (41a, 41b), respectively. Heat-source-side control units (20a, 20b) control the degree of opening so that the degree of opening of one motorized valve is greater than the degree of opening of the other motorized valve corresponding to the receiver (80a, 80b) that has been detected to be approaching full to control surplus refrigerant distribution.

Freezing unit

Provided is a freezing unit capable of minimizing bias of surplus refrigerant in high-pressure receivers, even when a plurality of heat-generating units having high-pressure receivers are connected. A first heat source unit (2a) and a second heat source unit (2b) have compressors (21a, 21b), heat-source-side heat exchangers (24a, 25a, 24b, 25b), receivers (80a, 80b), receiver liquid surface detection tubes (43a, 43b) for detecting approaching fullness, receiver gas release tubes (41a, 41b), and motorized valves (42a, 42b) disposed in the receiver gas release tubes (41a, 41b), respectively. Heat-source-side control units (20a, 20b) control the degree of opening so that the degree of opening of one motorized valve is greater than the degree of opening of the other motorized valve corresponding to the receiver (80a, 80b) that has been detected to be approaching full to control surplus refrigerant distribution.

A heat pump laundry dryer

The present invention relates to a laundry dryer with a heat pump system. The heat pump system comprises a closed refrigerant circuit (10) for a refrigerant and a drying air circuit (12) for drying air. The refrigerant circuit (10) includes a compressor (14) and lamination means (18). The air stream circuit (12) includes a laundry drum (52) and at least one fan (52). The refrigerant circuit (10) and the air stream circuit (12) are thermally coupled by a first heat exchanger (16) for heating up the air stream and cooling down the refrigerant and a second heat exchanger for cooling down the air stream and heating up the refrigerant (20). The refrigerant circuit (10) comprises a low pressure side (24) between the outlet of the lamination means (18) and the inlet of the compressor (14). The refrigerant circuit (10) comprises a high pressure side (26) between the outlet of the compressor (14) and the inlet of the lamination means (18). The low pressure side (24) and the high pressure side (26 ...

Heat pump clothes dryer

device and method for heat distribution in motor vehicle

A device and method for heat distribution in a hybrid motor vehicle are provided. The device includes an engine cooling circuit; and a refrigerant circuit for a combined operation in a refrigeration heat pump mode and a reheating mode, includes an evaporator, a compressor, a heat exchanger to supply heat from the refrigerant to air being conditioned for a passenger compartment; and a heat exchanger to transfer heat between a refrigerant of the refrigerant circuit and coolant of the engine cooling circuit, wherein the heat exchanger operates as an evaporator for the heat transfer, and as a condenser for the heat transfer from the condensing refrigerant to the coolant. The engine cooling circuit is provided with a first engine and a second engine. The first engine is configured as an internal combustion engine, and the second engine is configured as a motor. The invention also relates to a method for operating a device for heat distribution of the motor vehicle.

REFRIGERANT SYSTEM WITH ADAPTIVE HOT GAS REHEAT

A refrigerant system incorporates a hot gas reheat circuit. The hot gas reheat circuit includes a reheat valve for selectively tapping at least a portion of refrigerant from a location downstream of a compressor and upstream of a condenser, and through a reheat heat exchanger. At least one refrigerant flow control device controls the amount of refrigerant passing through the reheat heat exchanger. A control for the refrigerant system is operable to receive inputs from an indoor environment, and to control the amount of refrigerant passing through the reheat heat exchanger to achieve desired temperature and humidity in the conditioned environment.

Fahrzeugklimatisierungseinrichtung

Eine Fahrzeugklimatisierungseinrichtung kann gewährleisten, dass die Temperatur der einem Fahrzeuginneren zugeführten Luft eine voreingestellte Temperatur ist, durch Sicherstellen der Menge an Wärme, welche für den Radiator während eines Kühl- und Entfeuchtungsvorgangs freigegeben wird. Die Ventilöffnung des Kondensationsdruck-Regulierungsteils des ersten Steuerventils ist kleiner, wenn die berechnete Öffnung SW der Luftmischklappe gleich oder größer als der vorbestimmte Wert ist, als wenn die Öffnung SW kleiner als der vorbestimmte Wert ist. Dementsprechend, wenn die Menge der freigegebenen Wärme in dem Radiator nicht ausreichend ist, ist es möglich, den Kondensationsdruck des Kältemittels in dem Radiator zu erhöhen, zum Anheben der Temperatur des Kältemittels in dem Radiator. Konsequenterweise ist es möglich, die Menge an Wärme sicherzustellen, und deshalb zu gewährleisten, dass die Temperatur der dem Fahrzeuginneren zugeführten Luft eine voreingestellte Temperatur ist.

VARIABLE REFRIGERANT FLOW SYSTEM WITH REHEATING OF DEHUMIDIFIED AIR

An apparatus includes a compressor, a first heat exchanger, a reheater, a first valve, a second heat exchanger, a four-way valve, a cap tube, and a blower. The compressor compresses a refrigerant. The blower moves air proximate the second heat exchanger to the reheater. During a heating mode of operation, the four-way valve is configured to direct refrigerant from the compressor to the second heat exchanger; the second heat exchanger is configured to use the refrigerant from the compressor to heat air proximate the second heat exchanger; and the cap tube is configured to allow refrigerant to bypass the reheater.

Refrigeration cycle device and control method therefor

A refrigeration cycle device (100) in which a flammable refrigerant circulates comprises a bypass pipeline (5) connected such that part of the refrigerant flowing through a circulation pipeline from a condenser (2) to a flow control valve (3) bypasses the flow control valve (3) and an evaporator (4), a bypass flow control valve (6) for controlling the flow rate of the refrigerant flowing through the bypass pipeline (5), a heat exchanger (7) for allowing the refrigerant flowing through the bypass pipe line (5) after flowing out from the bypass flow control valve (6) and the refrigerant flowingthrough the circulation pipeline after flowing out from the condenser (2) to exchange heat with each other, and a supercooling degree sensor (T73) for detecting the supercooling degree of the refrigerant at an inlet of the flow control valve (3). At least either the flow control valve (3) or the bypass flow control valve (6) is so controlled that the supercooling degree of the refrigerant at the inlet ...

SYSTEM AND METHOD FOR SUPERHEAT REGULATION AND EFFICIENCY IMPROVEMENT

A refrigeration system includes a heat exchanger configured to provide superheat control for the low temperature low pressure gas refrigerant flowing out of the evaporator and through the first side of the heat exchanger by transferring heat from the high pressure high temperature superheated gas refrigerant flowing through a second side of the heat exchanger. A modulating solenoid valve is located at the inlet of the second side of the heat exchanger and configured to modulate the flow of high pressure high temperature superheated gas refrigerant flowing through the second side of the heat exchanger. A temperature sensor is located in such a way as to measure the temperature of the gas refrigerant flowing out of the evaporator and through the first side of the heat exchanger. A controller is configured to calculate the superheat of the gas refrigerant based on the measured temperature and measured pressure of the gas refrigerant and may compare the calculated superheat to a superheat threshold. If the calculated superheat is less than the superheat threshold, the controller will modulate the flow the high pressure high temperature gas refrigerant flowing through the second side of the heat exchanger. The refrigeration system may be activated in a variety of methods by appropriate control of the valves and other system components. 1. A refrigeration system comprising: a compressor for receiving a refrigerant flowing in the main refrigerant circuit and outputting a high temperature high pressure superheated refrigerant;', 'a condenser coupled to an outlet of the compressor and configured to subcool the high temperature high pressure superheated refrigerant;', 'a metering device coupled to an outlet of the condenser and configured to expand the subcooled refrigerant exiting the condenser;', 'an evaporator coupled to an outlet of the metering device and configured to transfer heat into the expanded refrigerant; and', 'a first side of a heat exchanger disposed between ...

Verfahren und System zum Heizen eines Fahrzeugs

Es werden Verfahren und Systeme zur Bereitstellung der Steuerung von Umgebungsbedingungen in einem Innenraum eines Fahrzeugs dargelegt. In einem Beispiel sind verschiedene kostengünstige Expansionsventile in einem System enthalten, das einen stromabwärts eines äußeren Wärmetauschers positionierten Empfänger hat, um eine Klimatisierungsautomatik mit Heiz-, Kühl-, Entfeuchtungs- und Enteisungsmodi bereitzustellen.

Air conditioner and method for controlling an air conditioner

An air conditioner and a method for controlling an air conditioner are provided. The air conditioner may include at least one indoor device, an electric heat pump (EHP) outdoor device connected to the at least one indoor device and having an EHP compressor driven using an applied current, and a gas heat pump (GHP) outdoor device connected to the at least one indoor device having an engine driven using a combustion of gas and a GHP compressor driven by receiving a driving force from the engine. The EHP compressor may include an inverter that controls a frequency of the current applied to the EHP compressor. The GHP compressor may include a first compressor that receives a driving force from the engine to compress a refrigerant; and a second compressor that is connected to the first compressor in parallel and receives the driving force from the engine to compress the refrigerant.

A HEAT PUMP LAUNDRY DRYER

The present invention relates to a laundry dryer with a heat pump system. The heat pump system comprises a closed refrigerant circuit (10) for a refrigerant and a drying air circuit (12) for drying air. The refrigerant circuit (10) includes a compressor (14) and lamination means (18). The air stream circuit (12) includes a laundry drum (52) and at least one fan (52). The refrigerant circuit (10) and the air stream circuit (12) are thermally coupled by a first heat exchanger (16) for heating up the air stream and cooling down the refrigerant and a second heat exchanger for cooling down the air stream and heating up the refrigerant (20). The refrigerant circuit (10) comprises a low pressure side (24) between the outlet of the lamination means (18) and the inlet of the compressor (14). The refrigerant circuit (10) comprises a high pressure side (26) between the outlet of the compressor (14) and the inlet of the lamination means (18). The low pressure side (24) and the high pressure side (26 ...

METHOD AND APPARATUS FOR CHARGE COMPENSATOR REHEAT VALVE

A heating, ventilation, and air conditioning (“HVAC”) system includes an evaporator coil and a compressor fluidly coupled to the evaporator coil via a suction line. A condenser coil is fluidly coupled to the compressor via a discharge line and fluidly coupled to a metering device via a liquid line. A charge compensator is fluidly coupled to the liquid line via a connection line. A charge compensator re-heat valve is disposed in the connection line.

Vorrichtung und Verfahren als Thermo-Gasmotor mit regenerativer CO2-Zirkulation und Wärmepumpenprozess

Dieses Verfahren, dessen Funktion auf den Enthalpie- und Druckdifferenzen eines Hochdruckgases beruht, soll eingesetzt werden, um die Effizienz von herkömmlichen Gasmotoren zu erhöhen. Im Vergleich zu konventionellen Gasmotoren erzeugt dieses Verfahren eine größere Menge an elektrischer Energie.Mittels einer Kälteanlage werden Druck- und Temperaturunterschiede erzeugt, die es erlauben die Entropie von CO2 soweit zu erhöhen, dass dadurch ein angeschlossener Gasmotor wirtschaftlicher angetrieben werden kann.Die Vorrichtung kommt als Gasmotor in Biogasanlagen, oder zur allgemeinen Stromerzeugung zum Einsatz.

REFRIGERATION CYCLE APPARATUS

In a refrigeration cycle apparatus according to the present disclosure, the circulation direction of refrigerant is switched between a first circulation direction and a second circulation direction opposite to the first circulation direction. The first circulation direction is a circulation direction in order of a compressor, a first heat exchanger, a first expansion valve, a third heat exchanger, a fourth heat exchanger, a second expansion valve, and a second heat exchanger. When a circulation direction of the refrigerant is the first circulation direction, the refrigerant from the third heat exchanger exchanges heat with the refrigerant from the second heat exchanger in the fourth heat exchanger. When a circulation direction of the refrigerant is the second circulation direction, the refrigerant from the fourth heat exchanger exchanges heat with the refrigerant from the first heat exchanger in the third heat exchanger.

REFRIGERATION APPARATUS

A refrigeration apparatus includes a refrigerant circuit connecting heat-source units in parallel with usage units. First and second heat-source units have first and second compressors, first and second heat-source-side heat exchangers, first and second high-pressure receivers, first and second detecting elements detecting whether the receivers are near flooding, first and second bypass channels returning refrigerant in top parts of the receivers to intake sides of the compressors, and first and second motor-operated valves on the bypass channels, respectively. A controller performs excess refrigerant distribution control in which an opening degree of the first valve is controlled to be greater than an opening degree of the second valve when the second detecting element detects a nearly flooded state, and the opening degree of the second valve is controlled to be greater than the opening degree of the first valve when the first detecting element detects a nearly flooded state. 1. A refrigeration apparatus comprising:a refrigerant circuit configured by connecting at least two heat-source units in parallel with usage units,the usage units having a usage-side heat exchanger and a usage-side motor-operated valve,the heat-source units having at least a first heat-source unit and a second heat-source unit,the first heat-source unit having a first compressor, a first heat-source-side heat exchanger, a first high-pressure receiver, a first detecting element arranged and configured to detect whether the first high-pressure receiver is near flooding, a first bypass channel arranged and configured to return refrigerant positioned at a top part in the first high-pressure receiver to an intake side of the first compressor, and a first motor-operated valve provided on the first bypass channel,the second heat-source unit having a second compressor, a second heat-source-side heat exchanger, a second high-pressure receiver, a second detecting element arranged and configured to ...

SUPERCRITICAL REFRIGERATION CYCLE

A CO2 refrigeration cycle comprising a compressor (1), a gas cooler (2), an expansion valve (3), an evaporator (4) and an accumulator (5) connected sequentially and circularly, and an internal heat exchanger (6) for exchanging heat between high-pressure refrigerant exited the gas cooler (2) and low-pressure refrigerant exited the accumulator (5), wherein a bypass passage (7) is set to bypass at least one passage of the internal heat exchanger (6), and a first flow regulation valve (8) and a second flow regulation valve (9) which sense a refrigerant temperature and perform valve operations to close when high-pressure refrigerant exited the gas cooler (2) is cooled by internal heat exchange and to open when low-pressure refrigerant exited the accumulator (5) is cooled by internal heat exchange are provided in the bypass passage (7).

A HEAT PUMP SYSTEM

A heat pump system for connection with an ultra-low district heating network, the heat pump system comprising: a piping network, a compressor configured to allow a refrigerant to flow in the piping network and perform a vapour compression refrigeration cycle, a first heat exchanger connected to the piping network and to the compressor, the first heat exchanger causing a heat-exchange between the refrigerant flowing in the piping network and water passing therethrough, a second heat exchanger connected to the piping network and to the compressor, the second heat exchanger causing a heat-exchange between the refrigerant flowing in the piping network and water passing therethrough, a sub-cooling heat exchanger configured to cool down the refrigerant flowing in the piping network, a super-heating heat exchanger configured to heat up the refrigerant flowing in the piping network, a buffer tank having an inlet at the lower part of the buffer tank and an outlet at the upper part of the buffer ...

Vorrichtung und Verfahren zum Betreiben der Vorrichtung zur Wärmeverteilung in einem Kraftfahrzeug

Die Erfindung betrifft eine Vorrichtung (1) zur Wärmeverteilung in einem Kraftfahrzeug, insbesondere in einem Hybridfahrzeug. Die Vorrichtung (1) weist einen Motorkühlkreislauf (3, 3) und einen für einen kombinierten Betrieb im Kälteanlagen- und Wärmepumpenmodus sowie für einen Nachheizmodus ausgebildeten Kältemittelkreislauf (2) mit einem Verdampfer (4), einem Verdichter (5), einem Wärmeübertrager (6) zur Wärmezufuhr vom Kältemittel an zu konditionierende Luft für einen Fahrgastraum sowie einem Wärmeübertrager (9) zur Wärmeübertragung zwischen dem Kältemittel des Kältemittelkreislaufes (2) und dem Kühlmittel des Motorkühlkreislaufes (3, 3) auf. Zum einen ist der Wärmeübertrager (9) als Verdampfer zur Wärmeübertragung vom Kühlmittel an das verdampfende Kältemittel und als Kondensator zur Wärmeübertragung vom kondensierenden Kältemittel an das Kühlmittel betreibbar ausgebildet und angeordnet. Zum anderen weist der Motorkühlkreislauf (3, 3) einen ersten Motor (14) und einen zweiten Motor ...

Variable Refrigerant Flow System

An apparatus includes a compressor, a first heat exchanger, a reheater, a first valve, a second heat exchanger, and a blower. The compressor compresses a refrigerant. The blower moves air proximate the second heat exchanger to the reheater. During a first mode of operation: the first heat exchanger removes heat from a first portion of the refrigerant from the compressor, the first valve opens such that a second portion of the refrigerant from the compressor flows to the reheater, the second heat exchanger uses the first portion of the refrigerant from the first heat exchanger and the second portion of the refrigerant from the reheater to cool air proximate the second heat exchanger, and the reheater uses the second portion of the refrigerant from the compressor to heat the air moved by the blower.

AIR CONDITIONER AND METHOD FOR CONTROLLING AN AIR CONDITIONER

An air conditioner and a method for controlling an air conditioner are provided. The air conditioner may include at least one indoor device, an electric heat pump (EHP) outdoor device connected to the at least one indoor device and having an EHP compressor driven using an applied current, and a gas heat pump (GHP) outdoor device connected to the at least one indoor device having an engine driven using a combustion of gas and a GHP compressor driven by receiving a driving force from the engine. The EHP compressor may include an inverter that controls a frequency of the current applied to the EHP compressor. The GHP compressor may include a first compressor that receives a driving force from the engine to compress a refrigerant; and a second compressor that is connected to the first compressor in parallel and receives the driving force from the engine to compress the refrigerant.

Indoor Liquid/Suction Heat Exchanger

Systems and methods are disclosed that include providing an air conditioning (A/C) system having an indoor unit with a Liquid/Suction Heat Exchanger (LSHX) coupled between an outdoor heat exchanger of an outdoor unit and an indoor metering device on a so-called “liquid” line and coupled between an indoor heat exchanger and a compressor of the outdoor unit on a so-called “vapor” line. The LSHX is configured to increase the efficiency of the A/C system by increasing the amount of subcooling in the refrigerant on the liquid line of the LSHX and increasing the amount of superheat in the refrigerant on the vapor line of the LSHX.

Kraftfahrzeugklimakreis

Die vorliegende Erfindung betrifft einen Klimakreis (1), in dem ein Kältefluid zirkuliert und der Folgendes aufweist: – einen Hauptverdichter (3), – einen ersten Wärmetauscher (5), der stromabwärts des Hauptverdichters (3) angeordnet ist, – einen zweiten Wärmetauscher (9), der stromaufwärts des Hauptverdichters (3) angeordnet ist, – einen Innenwärmetauscher (13) zwischen dem Kältefluid am Ausgang des ersten Wärmetauschers (5) und dem Kältefluid am Ausgang des zweiten Wärmetauschers (9), – eine Druckminderungsturbine (7), die stromaufwärts des zweiten Wärmetauschers (9) angeordnet ist, wobei der Klimakreis (1) ferner einen Zweig (A) zur Umgehung des Innenwärmetauschers (13) aufweist.

A heat pump laundry dryer

The present invention relates to a laundry dryer with a heat pump system. The heat pump system comprises a closed refrigerant circuit (10) for a refrigerant and a drying air circuit (12) for drying air. The refrigerant circuit (10) includes a compressor (14) and lamination means (18). The air stream circuit (12) includes a laundry drum (52) and at least one fan (52). The refrigerant circuit (10) and the air stream circuit (12) are thermally coupled by a first heat exchanger (16) for heating up the air stream and cooling down the refrigerant and a second heat exchanger for cooling down the air stream and heating up the refrigerant (20). The refrigerant circuit (10) comprises a low pressure side (24) between the outlet of the lamination means (18) and the inlet of the compressor (14). The refrigerant circuit (10) comprises a high pressure side (26) between the outlet of the compressor (14) and the inlet of the lamination means (18). The low pressure side (24) and the high pressure side (26) are thermally coupled by at least one internal heat exchanger (22; 40, 42). The refrigerant circuit (10) includes at least one by-pass line (28; 38) for bypassing at least a part of the low pressure side (24) and/or high pressure side (26) of the internal heat exchanger (22; 40, 42),

Method And System For Heating A Vehicle

REFRIGERANT SYSTEM WITH ADAPTIVE HOT GAS REHEAT

A refrigerant system incorporates a hot gas reheat circuit. The hot gas reheat circuit includes a reheat valve for selectively tapping at least a portion of refrigerant from a location downstream of a compressor and upstream of a condenser, and through a reheat heat exchanger. At least one refrigerant flow control device controls the amount of refrigerant passing through the reheat heat exchanger. A control for the refrigerant system is operable to receive inputs from an indoor environment, and to control the amount of refrigerant passing through the reheat heat exchanger to achieve desired temperature and humidity in the conditioned environment.

Variable refrigerant flow system with reheating of dehumidified air

An apparatus includes a compressor, a first heat exchanger, a reheater, a first valve, a second heat exchanger, a four-way valve, a cap tube, and a blower. The compressor compresses a refrigerant. The blower moves air proximate the second heat exchanger to the reheater. During a heating mode of operation, the four-way valve is configured to direct refrigerant from the compressor to the second heat exchanger; the second heat exchanger is configured to use the refrigerant from the compressor to heat air proximate the second heat exchanger; and the cap tube is configured to allow refrigerant to bypass the reheater.

Vehicle Air Conditioning Apparatus

A vehicle air conditioning apparatus can ensure that the temperature of the air supplied to the vehicle interior is a preset temperature by securing the quantity of heat release for the radiator during a cooling and dehumidifying operation. The valve opening of the condensing pressure regulating part of the first control valve is smaller when the calculated opening SW of the air mix damper is equal to or more than the predetermined value than when the opening SW is smaller than the predetermined value. Accordingly, when the quantity of heat release is not sufficient in the radiator, it is possible to increase the condensing pressure of the refrigerant in the radiator to raise the temperature of the refrigerant in the radiator. Consequently, it is possible to secure the amount of heating, and therefore to ensure that the temperature of the air supplies to the vehicle interior is a preset temperature.

HEAT DISTRIBUTION IN A MOTOR VEHICLE

A device and method for heat distribution in a hybrid motor vehicle are provided. The device includes an engine cooling circuit; and a refrigerant circuit for a combined operation in a refrigeration heat pump mode and a reheating mode, includes an evaporator, a compressor, a heat exchanger to supply heat from the refrigerant to air being conditioned for a passenger compartment; and a heat exchanger to transfer heat between a refrigerant of the refrigerant circuit and coolant of the engine cooling circuit, wherein the heat exchanger operates as an evaporator for the heat transfer, and as a condenser for the heat transfer from the condensing refrigerant to the coolant.

Heat pump with at least two heat sources

Bei einer Wärmepumpe mit mindestens einem Verdampfer (1), einem Kompressor (2), Kondensator (3) und einem Expansionsventil (4), ist zwischen dem Verdampfer (1) und dem Kompressor (2) und / oder im Heizungskreislauf mindestens eine weitere Wärmequelle (6) angeordnet.

A heat pump laundry dryer

本发明涉及一种具有热泵系统的衣物干燥机。热泵系统包括用于制冷剂的闭合制冷剂回路（10）和用于干燥空气的干燥空气回路（12）。制冷剂回路（10）包括压缩机（14）和层压装置（18）。空气流回路（12）包括衣物滚筒（52）和至少一个风扇（52）。制冷剂回路（10）和空气流回路（12）由用于加热空气流和冷却制冷剂的第一热交换器（16）以及用于冷却空气流和加热制冷剂（20）的第二热交换器热联接。制冷剂回路（10）包括位于层压装置（10）的出口与压缩机（14）的入口之间的低压侧（24）。制冷剂回路（10）包括位于压缩机（14）的出口与层压装置（18）的入口之间的高压侧（26）。低压侧（24）和高压侧（26）由至少一个内部热交换器（22；40、42）热联接。制冷剂回路（10）包括用于绕过内部热交换器（22；40、42）的低压侧（24）和/或高压侧（26）的至少一部分的至少一个旁通管路（28；38）。

Self-cascade refrigeration system with double-stage compression function

Variable refrigerant flow system with reheating of dehumidified air

An apparatus includes a compressor, a first heat exchanger, a reheater, a first valve, a second heat exchanger, and a blower. The compressor compresses a refrigerant. The blower moves air proximate the second heat exchanger to the reheater. During a first mode of operation: the first heat exchanger removes heat from a first portion of the refrigerant from the compressor, the first valve opens such that a second portion of the refrigerant from the compressor flows to the reheater, the second heat exchanger uses the first portion of the refrigerant from the first heat exchanger and the second portion of the refrigerant from the reheater to cool air proximate the second heat exchanger, and the reheater uses the second portion of the refrigerant from the compressor to heat the air moved by the blower.

Piping structure with inner heat exchanger and refrigeration cycle device having the same

A piping structure for a refrigerant cycle device includes an inner heat exchanger, and a bypass pipe through which refrigerant flows while bypassing the inner heat exchanger. The inner heat exchanger has a first flow passage in which high-pressure refrigerant before being decompressed flows and a second flow passage in which low-pressure refrigerant after being decompressed flows. The refrigerant cycle device includes plural low-pressure side heat exchangers, and the plural low-pressure side heat exchangers are located such that refrigerant from a part of the low-pressure side heat exchangers flows through the second flow passage of the inner heat exchanger, and refrigerant from the other part of the low-pressure side heat exchangers flows through the bypass pipe while bypassing the inner heat exchanger.

Air conditioner for vehicle

System and Method for Superheat Regulation and Efficiency Improvement

A refrigeration system includes a heat exchanger configured to provide superheat control for the low temperature low pressure gas refrigerant flowing out of the evaporator and through the first side of the heat exchanger by transferring heat from the high pressure high temperature superheated gas refrigerant flowing through a second side of the heat exchanger. A modulating solenoid valve is located at the inlet of the second side of the heat exchanger and configured to modulate the flow of high pressure high temperature superheated gas refrigerant flowing through the second side of the heat exchanger. A temperature sensor is located in such a way as to measure the temperature of the gas refrigerant flowing out of the evaporator and through the first side of the heat exchanger. A controller is configured to calculate the superheat of the gas refrigerant based on the measured temperature and measured pressure of the gas refrigerant and may compare the calculated superheat to a superheat threshold. If the calculated superheat is less than the superheat threshold, the controller will modulate the flow the high pressure high temperature gas refrigerant flowing through the second side of the heat exchanger. The refrigeration system may be activated in a variety of methods by appropriate control of the valves and other system components.

A refrigeration system

A refrigeration system comprises a compressor for compressing a gaseous refrigerant, such that the temperature and pressure thereof increases, whereas the boiling point thereof decreases; a condenser, in which the gaseous refrigerant from the compressor exchanges heat with a high temperature heat carrier, said heat exchange resulting in the refrigerant condensing; an expansion valve reducing the pressure of liquid refrigerant from the condenser, hence reducing the boiling point of the refrigerant; an evaporator, in which the low boiling point refrigerant exchanges heat with a low temperature heat carrier, such that the refrigerant vaporizes; and a suction gas heat exchanger exchanging heat between high temperature liquid refrigerant from the condenser and low temperature gaseous refrigerant from the evaporator. The low temperature gaseous refrigerant entering the suction gas heat exchanger contains a certain amount of low temperature liquid refrigerant, said low temperature liquid refrigerant ...

For a motor vehicle in the heat distribution device and method

Refrigeration cycle device and control method therefor

車両用空気調和装置

Heat distribution in a motor vehicle

A device for heat distribution in a hybrid motor vehicle includes an engine cooling circuit and a refrigerant circuit for a combined operation in a refrigeration heat pump mode and a reheating mode. The refrigerant circuit includes an evaporator, a compressor, a heat exchanger to supply heat from the refrigerant to air being conditioned for a passenger compartment, and a heat exchanger to transfer heat between a refrigerant of the refrigerant circuit and coolant of the engine cooling circuit. The heat exchanger operates as an evaporator for the heat transfer from the coolant to the evaporating refrigerant, and alternatively operates as a condenser for the heat transfer from the condensing refrigerant to the coolant.

HEAT PUMP LAUNDRY DRYER

A laundry dryer is provided with a heat pump system. The heat pump system comprises a closed refrigerant circuit (10) for a refrigerant and a drying air circuit (12) for drying air. The refrigerant circuit (10) includes a compressor (14) and lamination means (18). The air stream circuit (12) includes a laundry drum (52) and at least one fan (52). The refrigerant circuit (10) and the air stream circuit (12) are thermally coupled by a first heat exchanger (16) for heating up the air stream and cooling down the refrigerant and a second heat exchanger for cooling down the air stream and heating up the refrigerant (20). The refrigerant circuit (10) comprises a low pressure side (24) between the outlet of the lamination means (18) and the inlet of the compressor (14). The refrigerant circuit (10) comprises a high pressure side (26) between the outlet of the compressor (14) and the inlet of the lamination means (18). The low pressure side (24) and the high pressure side (26) are thermally coupled ...

REFRIGERANT CYCLE SYSTEM

Refrigerant is caused to be in a superheating state without impairing the performance of a cascade heat exchanger. A refrigerant cycle system includes a first refrigerant circuit, a second refrigerant circuit, and a first cascade heat exchanger. The first cascade heat exchanger exchanges heat between a first refrigerant that flows in the first refrigerant circuit and a second refrigerant that flows in the second refrigerant circuit. The refrigerant cycle system includes a switching mechanism. The switching mechanism switches a flow path of a refrigerant of at least either one of the first refrigerant circuit and the second refrigerant circuit. The first cascade heat exchanger includes a first main heat exchanging unit acid a first sub heat exchanging unit. The first sub heat exchanging unit is configured to cause the first refrigerant that has passed through the first main heat exchanging unit to be in a superheating state.

PIPING WITH INTERNAL HEAT EXCHANGER AND REFRIGERATING CYCLE DEVICE COMPRISING THE SAME

PROBLEM TO BE SOLVED: To provide piping with an internal heat exchanger and a refrigerating cycle device comprising the same, capable of preventing the degradation of cooling performance in accompany with increase in pressure loss in a low-pressure refrigerant piping. SOLUTION: This refrigerating cycle device 100A comprises the internal heat exchanger 160 having a first flow channel 160a and a second flow channel 162, and the piping 170 with the internal heat exchanger having a bypass pipe 171 providing a flow channel joining to an outlet side of the second flow channel 162 while bypassing the internal heat exchanger 160, a refrigerant outflow side of a high-pressure side heat exchanger 120 is connected to an inlet-side connecting portion 164b, refrigerant inflow sides of expansion valves 131, 132 are connected to outlet-side connecting portions 165b, 168b, a refrigerant suction side of a compressor 110 is connected to an outlet-side connecting portion 167a, the refrigerant outflow side ...

METHOD AND APPARATUS FOR CHARGE COMPENSATOR REHEAT VALVE

A heating, ventilation, and air conditioning (“HVAC”) system includes an evaporator coil and a compressor fluidly coupled to the evaporator coil via a suction line. A condenser coil is fluidly coupled to the compressor via a discharge line and fluidly coupled to a metering device via a liquid line. A charge compensator is fluidly coupled to the liquid line via a connection line. A charge compensator re-heat valve is disposed in the connection line.

A REFRIGERATION SYSTEM AND METHOD

A refrigeration system includes a compressor for compressing a gaseous refrigerant, such that the temperature and pressure thereof increases, whereas the boiling point thereof decreases; a condenser, in which the gaseous refrigerant from the compressor exchanges heat with a high temperature heat carrier, said heat exchange resulting in the refrigerant condensing; an expansion valve reducing the pressure of liquid refrigerant from the condenser, hence reducing the boiling point of the refrigerant; an evaporator, in which the low boiling point refrigerant exchanges heat with a low temperature heat carrier, such that the refrigerant vaporizes; and a suction gas heat exchanger exchanging heat between high temperature liquid refrigerant from the condenser and low temperature gaseous refrigerant from the evaporator. The low temperature gaseous refrigerant entering the suction gas heat exchanger contains a certain amount of low temperature liquid refrigerant, said low temperature liquid refrigerant vaporizing as a result of the heat exchange with the high temperature liquid refrigerant from the condenser. Disclosed is also a refrigeration method.

自動車の熱分散のための装置及び方法

secadora de roupa com um sistema de bomba térmica

Apparatus and method for controlling the temperature of an electronic device

An apparatus for controlling the temperature of an electronic device. The apparatus comprises a refrigeration system including a compressor and a multi-pass heat exchanger. The refrigeration system is operative to circulate a refrigerant fluid through a fluid flow loop such that the refrigerant fluid will change between gaseous and liquid states to alternately absorb and release thermal energy. The refrigerant fluid is pre-cooled in the heat exchanger by a pre-cooling refrigerant stream. A thermal head is connected into the fluid flow loop and has a temperature controlled surface.

Piping structure with inner heat exchanger and refrigeration cycle device having the same

一种用于制冷剂循环装置的管道结构，包括内部热交换器(160)，和在绕过内部热交换器时制冷剂流过的支路管(171)。内部热交换器具有减压前高压制冷剂流过的第一流动通道(160a)和减压后低压制冷剂流过的第二流动通道(162)。制冷剂循环装置包括多个低压侧热交换器(141、142、243)，多个低压侧热交换器被设置使得来自一部分低压侧热交换器的制冷剂流过内部热交换器的第二流动通道，来自另一部分低压侧热交换器的制冷剂在绕过内部热交换器的同时流过支路管。

A refrigeration system and a method for controlling such a refrigeration system

A refrigeration system comprises a compressor for compressing a gaseous refrigerant, such that the temperature and pressure thereof increases, whereas the boiling point thereof decreases; a condenser, in which the gaseous refrigerant from the compressor exchanges heat with a high temperature heat carrier, said heat exchange resulting in the refrigerant condensing; an expansion valve reducing the pressure of liquid refrigerant from the condenser, hence reducing the boiling point of the refrigerant; an evaporator, in which the low boiling point refrigerant exchanges heat with a low temperature heat carrier, such that the refrigerant vaporizes; and a suction gas heat exchanger exchanging heat between high temperature liquid refrigerant from the condenser and low temperature gaseous refrigerant from the evaporator. A balance valve is arranged to enable bypassing the high temperature liquid refrigerant such that it does not exchange heat with the low temperature gaseous refrigerant from the ...

Refrigeration apparatus

A refrigeration apparatus includes a refrigerant circuit connecting heat-source units in parallel with usage units. First and second heat-source units have first and second compressors, first and second heat-source-side heat exchangers, first and second high-pressure receivers, first and second detecting elements detecting whether the receivers are near flooding, first and second bypass channels returning refrigerant in top parts of the receivers to intake sides of the compressors, and first and second motor-operated valves on the bypass channels, respectively. A controller performs excess refrigerant distribution control in which an opening degree of the first valve is controlled to be greater than an opening degree of the second valve when the second detecting element detects a nearly flooded state, and the opening degree of the second valve is controlled to be greater than the opening degree of the first valve when the first detecting element detects a nearly flooded state.

Vapor compression system with defrost system

A vapor compression system including a circuit having operably coupled thereto, in serial order, a compressor, an interior heat exchanger, a second heat exchanger, an expansion device, an exterior heat exchanger, and an accumulator. A first bypass line extends from circuit between interior exchanger and second exchanger to between expansion device and third exchanger. A second bypass line extends from circuit between the exterior exchanger and accumulator to accumulator, and is operably coupled to second exchanger. A bypass expansion device is operably coupled to second bypass line. A first valve is coupled to first bypass line, and a second valve is coupled to second bypass line. During a defrost cycle first valve is in a first position wherein refrigerant flowing from interior exchanger flows to exterior exchanger through first bypass line, and second valve is in a second position wherein refrigerant flowing from exterior exchanger flows through second bypass line.

HEAT DISTRIBUTION IN A MOTOR VEHICLE

A device and method for heat distribution in a hybrid motor vehicle are provided. The device includes an engine cooling circuit; and a refrigerant circuit for a combined operation in a refrigeration heat pump mode and a reheating mode, includes an evaporator, a compressor, a heat exchanger to supply heat from the refrigerant to air being conditioned for a passenger compartment; and a heat exchanger to transfer heat between a refrigerant of the refrigerant circuit and coolant of the engine cooling circuit, wherein the heat exchanger operates as an evaporator for the heat transfer, and as a condenser for the heat transfer from the condensing refrigerant to the coolant.

Vapor compression system with defrost system

A vapor compression system including a circuit having operably coupled thereto, in serial order, a compressor, an interior heat exchanger, a second heat exchanger, an expansion device, an exterior heat exchanger, and an accumulator. A first bypass line extends from circuit between interior exchanger and second exchanger to between expansion device and third exchanger. A second bypass line extends from circuit between the exterior exchanger and accumulator to accumulator, and is operably coupled to second exchanger. A bypass expansion device is operably coupled to second bypass line. A first valve is coupled to first bypass line, and a second valve is coupled to second bypass line. During a defrost cycle first valve is in a first position wherein refrigerant flowing from interior exchanger flows to exterior exchanger through first bypass line, and second valve is in a second position wherein refrigerant flowing from exterior exchanger flows through second bypass line.

Method and apparatus for charge compensator reheat valve

A heating, ventilation, and air conditioning (“HVAC”) system includes an evaporator coil and a compressor fluidly coupled to the evaporator coil via a suction line. A condenser coil is fluidly coupled to the compressor via a discharge line and fluidly coupled to a metering device via a liquid line. A charge compensator is fluidly coupled to the liquid line via a connection line. A charge compensator re-heat valve is disposed in the connection line.

冷凍装置

【課題】高圧レシーバを有する熱源ユニットが複数接続されている場合であっても、各高圧レシーバにおける余剰冷媒の偏りを小さく抑えることが可能な冷凍装置を提供する。【解決手段】第１熱源ユニット２ａと第２熱源ユニット２ｂは、それぞれ、圧縮機２１ａ、２１ｂと、熱源側熱交換器２４ａ、２５ａ、２４ｂ、２５ｂと、レシーバ８０ａ、８０ｂと、満液に近いことを検出するためのレシーバ液面検知管４３ａ、４３ｂと、レシーバガス抜き管４１ａ、４１ｂと、レシーバガス抜き管４１ａ、４１ｂに設けられた電動弁４２ａ、４２ｂと、を有している。熱源側制御部２０ａ、２０ｂは、レシーバ８０ａ、８０ｂのうち満液に近いことが検知された方に対応する電動弁の開度よりも他方の電動弁の開度の方が大きくなるように開度制御を行って余剰冷媒分配制御を行う。【選択図】図８ Provided is a refrigeration apparatus that can suppress the bias of surplus refrigerant in each high-pressure receiver even when a plurality of heat source units having high-pressure receivers are connected. A first heat source unit 2a and a second heat source unit 2b are nearly full of compressors 21a, 21b, heat source side heat exchangers 24a, 25a, 24b, 25b, receivers 80a, 80b, respectively. Receiver liquid level detection tubes 43a and 43b, receiver gas vent tubes 41a and 41b, and motor operated valves 42a and 42b provided on the receiver gas vent tubes 41a and 41b. The heat source side control units 20a and 20b are opened so that the opening degree of the other motor-operated valve is larger than the opening degree of the motor-operated valve corresponding to the one of the receivers 80a and 80b that is detected to be nearly full. The excess refrigerant distribution control is performed by performing the degree control. [Selection] Figure 8

SUPERCRITICAL REFRIGERATING CYCLE

【課題】部品点数減やコスト減や信頼性向上を図りながら、冷媒温度によって内部熱交換器への冷媒流量を制御することで、内部熱交換による冷房能力の向上と、コンプレッサへ供給する冷媒の液冷媒化の防止の両立を達成することができる超臨界冷凍サイクルを提供すること。 【解決手段】コンプレッサ１と、ガスクーラ２と、膨張弁３と、エバポレータ４と、アキュムレータ５を順次環状に接続し、ガスクーラ２を出た高圧冷媒とアキュムレータ５を出た低圧冷媒との間で熱交換する内部熱交換器６を備えたCO 2 冷凍サイクルにおいて、内部熱交換器６の少なくとも片方の通路をバイパスするバイパス通路７を設定し、バイパス通路７に、冷媒温度を感知し、内部熱交換によりガスクーラ２を出た高圧冷媒を冷却するとき閉じ、内部熱交換によりアキュムレータ５を出た低圧冷媒を冷却するとき開く弁動作を行う第１流量調整弁８と第２流量調整弁９を設けた。 【選択図】図１

AIR CONDITIONING APPARATUS

An air conditioning apparatus includes: a supercooling heat exchanger configured to supercool refrigerant flowing in a first flow path between an outdoor heat exchanger and an expansion valve; a flow path switching valve configured to switch a flow path between an indoor heat exchanger and a compressor to one of a second flow path that does not extend through the supercooling heat exchanger and a third flow path that extends through the supercooling heat exchanger; a bypass circuit that is branched from the first flow path and extends through the supercooling heat exchanger; and a bypass regulating valve provided in the bypass circuit; and a controller. In a cooling operation, when a load is not low, the controller selects the second flow path and opens the bypass regulating valve, whereas when the load is low, the controller selects the third flow path and closes the bypass regulating valve.

Self-cascade refrigeration system with two-stage compression

Refrigeration cycle device and method of controlling the same

A refrigeration cycle device 100 where a combustible refrigerant circulates includes a bypass pipe 5 that is connected so that part of the refrigerant that flows through a circulation pipe extending from a condenser 2 to a flow control valve 3 bypasses the flow control valve 3 and an evaporator 4; a bypass flow control valve 6 that controls the amount of the refrigerant flowing through the bypass pipe 5; a heat exchanger 7 that allows heat exchange between the refrigerant that flows through the bypass pipe 5 after flowing out of the bypass flow control valve 6 and the refrigerant that flows through the circulation pipe after flowing out of the condenser 2; and a subcooling degree sensor T73 that detects the subcooling degree of the refrigerant at the inlet of the flow control valve 3. At least either the flow control valve 3 or the bypass flow control valve 6 is controlled so that the subcooling degree of the refrigerant at the inlet of the flow control valve 3 is equal to or greater than ...

System and method for superheat regulation and efficiency improvement

A refrigeration system includes a heat exchanger configured to provide superheat control for the low temperature low pressure gas refrigerant flowing out of the evaporator and through the first side of the heat exchanger by transferring heat from the high pressure high temperature superheated gas refrigerant flowing through a second side of the heat exchanger. A modulating solenoid valve is located at the inlet of the second side of the heat exchanger and configured to modulate the flow of high pressure high temperature superheated gas refrigerant flowing through the second side of the heat exchanger. A temperature sensor is located in such a way as to measure the temperature of the gas refrigerant flowing out of the evaporator and through the first side of the heat exchanger. A controller is configured to calculate the superheat of the gas refrigerant based on the measured temperature and measured pressure of the gas refrigerant and may compare the calculated superheat to a superheat threshold ...

Piping structure with inner heat exchanger and refrigeration cycle device having the same

A piping structure for a refrigerant cycle device includes an inner heat exchanger, and a bypass pipe through which refrigerant flows while bypassing the inner heat exchanger. The inner heat exchanger has a first flow passage in which high-pressure refrigerant before being decompressed flows and a second flow passage in which low-pressure refrigerant after being decompressed flows. The refrigerant cycle device includes plural low-pressure side heat exchangers, and the plural low-pressure side heat exchangers are located such that refrigerant from a part of the low-pressure side heat exchangers flows through the second flow passage of the inner heat exchanger, and refrigerant from the other part of the low-pressure side heat exchangers flows through the bypass pipe while bypassing the inner heat exchanger.

Vehicle air conditioning apparatus

A vehicle air conditioning apparatus can ensure that the temperature of the air supplied to the vehicle interior is a preset temperature by securing the quantity of heat release for the radiator during a cooling and dehumidifying operation. The valve opening of the condensing pressure regulating part of the first control valve is smaller when the calculated opening SW of the air mix damper is equal to or more than the predetermined value than when the opening SW is smaller than the predetermined value. Accordingly, when the quantity of heat release is not sufficient in the radiator, it is possible to increase the condensing pressure of the refrigerant in the radiator to raise the temperature of the refrigerant in the radiator. Consequently, it is possible to secure the amount of heating, and therefore to ensure that the temperature of the air supplies to the vehicle interior is a preset temperature.

VARIABLE REFRIGERANT FLOW SYSTEM

An apparatus includes a compressor, a first heat exchanger, a reheater, a first valve, a second heat exchanger, a four-way valve, a cap tube, and a blower. The compressor compresses a refrigerant. The blower moves air proximate the second heat exchanger to the reheater. During a cooling mode of operation, the four-way valve is configured to direct refrigerant from the first heat exchanger to the compressor; the compressor compresses the refrigerant received from the first heat exchanger; and the cap tube is configured to allow refrigerant to bypass the reheater.

Apparatus and method for controlling the temperature of an electronic device

An apparatus for controlling the temperature of an electronic device. The apparatus comprises a refrigeration system including a compressor and a multi-pass heat exchanger. The refrigeration system is operative to circulate a refrigerant fluid through a fluid flow loop such that the refrigerant fluid will change between gaseous and liquid states to alternately absorb and release thermal energy. The refrigerant fluid is pre-cooled in the heat exchanger by a pre-cooling refrigerant stream. A thermal head is connected into the fluid flow loop and has a temperature controlled surface.

Refrigeration system and method

一种制冷系统，包括：压缩机，用于压缩气态制冷剂，使得其温度和压力增加，而其沸点降低；冷凝器，来自压缩机的气态制冷剂在其中与高温热载体交换热量，所述热交换导致制冷剂冷凝；膨胀阀，其降低来自冷凝器的液态制冷剂的压力，从而降低制冷剂的沸点；蒸发器，低沸点制冷剂在其中与低温热载体交换热量，使得制冷剂蒸发；以及抽吸气体热交换器，其在来自冷凝器的高温液态制冷剂和来自蒸发器的低温气态制冷剂之间交换热量。进入吸气换热器的低温气态制冷剂包含一定量的低温液态制冷剂，所述低温液态制冷剂通过与来自冷凝器的高温液态制冷剂进行热交换而蒸发。还公开了一种制冷方法。

A refrigeration system and method

A refrigeration system comprises a compressor for compressing a gaseous refrigerant, such that the temperature and pressure thereof increases, whereas the boiling point thereof decreases; a condenser, in which the gaseous refrigerant from the compressor exchanges heat with a high temperature heat carrier, said heat exchange resulting in the refrigerant condensing; an expansion valve reducing the pressure of liquid refrigerant from the condenser, hence reducing the boiling point of the refrigerant; an evaporator, in which the low boiling point refrigerant exchanges heat with a low temperature heat carrier, such that the refrigerant vaporizes; and a suction gas heat exchanger exchanging heat between high temperature liquid refrigerant from the condenser and low temperature gaseous refrigerant from the evaporator. The low temperature gaseous refrigerant entering the suction gas heat exchanger contains a certain amount of low temperature liquid refrigerant, said low temperature liquid refrigerant vaporizing as a result of the heat exchange with the high temperature liquid refrigerant from the condenser. Disclosed is also a refrigeration method.

Air conditioning apparatus for vehicle

Provided is an air conditioning apparatus for a vehicle which, by ensuring the necessary amount of dissipated heat in a radiator during a dehumidification cooling operation, makes it possible to reliably ensure that the temperature of air being supplied to a passenger compartment is the set temperature. When the calculated opening degree (SW) of an air mixing damper (16) is a predetermined opening degree or greater, the valve opening degree of a condensing-pressure-regulating means side of a first control valve (24) is made smaller than when the opening degree (SW) is less than the predetermined opening degree. This makes it possible to elevate the condensing pressure of a refrigerant in a radiator (15) and increase the temperature of the radiator (15) in a case where the amount of heating in the radiator (15) is insufficient during a cooling operation and during a humidification cooling operation; therefore, the amount of heating needed to heat air being blown into a passenger compartment can be ensured, and it becomes possible to reliably ensure that the temperature of air being supplied to the passenger compartment is the set temperature.

Air conditioner and control method thereof

본 발명은 공기 조화기 및 그 제어 방법에 관한 것으로, 대형 압축기를 사용하지 않고도 쾌속 난방 성능을 향상시키는 것을 목적으로 한다. 이를 위해 본 발명에 따른 공기 조화기는, 제 1 열 교환기를 구비하는 실내기와; 압축기 및 제 2 열 교환기를 구비하는 실외기와; 실내기와 실외기 사이의 냉매 순환 유로를 형성하는 냉매 사이클과; 냉매 사이클에서의 냉매 흐름을 전환하도록 마련되는 유로 전환 수단과; 압축기에서 토출되는 냉매의 일부를 압축기의 흡입 측으로 유입되도록 하면서 압축기에서 토출되는 냉매의 나머지 일부를 제 1 열 교환기와 제 2 열 교환기 가운데 적어도 하나의 열 교환기로 흐르도록 유로 전환 수단을 제어하는 제어부를 포함한다.

Freezing unit

　Provided is a freezing unit capable of minimizing bias of surplus refrigerant in high-pressure receivers, even when a plurality of heat-generating units having high-pressure receivers are connected. A first heat source unit (2a) and a second heat source unit (2b) have compressors (21a, 21b), heat-source-side heat exchangers (24a, 25a, 24b, 25b), receivers (80a, 80b), receiver liquid surface detection tubes (43a, 43b) for detecting approaching fullness, receiver gas release tubes (41a, 41b), and motorized valves (42a, 42b) disposed in the receiver gas release tubes (41a, 41b), respectively. Heat-source-side control units (20a, 20b) control the degree of opening so that the degree of opening of one motorized valve is greater than the degree of opening of the other motorized valve corresponding to the receiver (80a, 80b) that has been detected to be approaching full to control surplus refrigerant distribution.

Air conditioning device

Method and apparatus for charge compensator reheat valve

A heating, ventilation, and air conditioning (“HVAC”) system includes an evaporator coil and a compressor fluidly coupled to the evaporator coil via a suction line. A condenser coil is fluidly coupled to the compressor via a discharge line and fluidly coupled to a metering device via a liquid line. A charge compensator is fluidly coupled to the liquid line via a connection line. A charge compensator re-heat valve is disposed in the connection line.

Refrigeration cycle apparatus

Air conditioner

An air conditioner (1), comprising: a refrigerant circuit (2) configured to circulate a refrigerant through a compressor (10), a condenser (40), an LEV (111), and an evaporator (20); a first temperature sensor (102) that detects the temperature of the liquid refrigerant on the inlet side of the evaporator (20); and a control device (200) for controlling the compressor (10) and the LEV (111). If the temperature (T1) detected by the first temperature sensor (101) is lower than a frost formation assessment temperature, the control device (200) causes the opening degree of the LEV (111) to be greater, and causes the operation frequency of the compressor (10) to be higher, than if the temperature (T1) detected by the first temperature sensor (101) is higher than the frost formation assessment temperature.

Refrigeration cycle device and control method therefor

Refrigeration cycle apparatus and control method thereof

可燃性の冷媒が循環する冷凍サイクル装置１００において、凝縮器２から流量制御弁３に至る循環配管を流れる冷媒の一部が流量制御弁３および蒸発器４をバイパスするように接続されたバイパス配管５と、バイパス配管５を流れる冷媒の流量を制御するバイパス流量制御弁６と、バイパス流量制御弁６から流出してバイパス配管５を流れる冷媒と凝縮器２から流出して循環配管を流れる冷媒とを熱交換させる熱交換器７と、流量制御弁３の入口における冷媒の過冷却度を検出する過冷却度センサーＴ７３とを備え、流量制御弁３の入口における冷媒の過冷却度が所定の値以上になるように流量制御弁３またはバイパス流量制御弁６の少なくとも一方が制御される。 In the refrigeration cycle apparatus 100 in which the flammable refrigerant circulates, bypass piping in which a part of the refrigerant flowing through the circulation piping from the condenser 2 to the flow rate control valve 3 bypasses the flow rate control valve 3 and the evaporator 4. 5, a bypass flow control valve 6 that controls the flow rate of the refrigerant flowing through the bypass pipe 5, a refrigerant that flows out of the bypass flow control valve 6 and flows through the bypass pipe 5, and a refrigerant that flows out of the condenser 2 and flows through the circulation pipe And a supercooling degree sensor T73 for detecting the degree of refrigerant subcooling at the inlet of the flow rate control valve 3, and the degree of refrigerant subcooling at the inlet of the flow rate control valve 3 is a predetermined value. At least one of the flow rate control valve 3 or the bypass flow rate control valve 6 is controlled so as to be as described above.

Air conditioner

An air conditioner (1) comprises: a refrigerant circuit (2) configured to circulate refrigerant through a compressor (10), a condenser (40), an LEV (111) and an evaporator (20); a first temperature sensor (102) configured to sense the temperature of liquid refrigerant at the inlet port of the evaporator (20); and a controller (200) configured to control the compressor (10) and the LEV (111). In a case where a temperature (T1) sensed by the first temperature sensor (101) is lower than a frosting reference temperature, the controller (200) increases the opening degree of the LEV (111) and also increases the operating frequency of the compressor (10) as compared with a case where the temperature (T1) sensed by the first temperature sensor (101) is higher than the frosting reference temperature.

차량의 열관리 시스템

냉매의 기액 분리가 수행되는 축압기; 냉매를 압축하는 압축기; 냉매와 난방용 공기 사이의 열교환이 수행되는 내부 응축기; 냉매와 외기 사이의 열교환이 수행되는 외부 응축기; 냉매를 팽창시키는 제1 팽창밸브; 냉매와 냉방용 공기 사이의 열교환이 수행되는 증발기; 상기 압축기와 내부 응축기 사이의 냉매라인에서 분기되어 상기 축압기로 연결되고 상기 압축기에 의해 압축된 냉매를 상기 축압기로 선택적으로 재순환시키도록 구비된 재순환용 냉매라인; 및 상기 재순환용 냉매라인에에 설치되어 재순환용 냉매라인을 통과한 냉매를 축압기 내부에 선택적으로 토출할 수 있도록 구비된 토출밸브를 포함하는 차량의 열관리 시스템이 개시된다.

Thermal management system for vehicle

Proposed is a thermal management system for a vehicle, the thermal management system including an accumulator at which vapor-liquid separation of a refrigerant is performed, a compressor configured to compress a refrigerant, an inner condenser at which heat exchange is performed between a refrigerant and heating air, an outer condenser at which heat exchange is performed between a refrigerant and external air, a first expansion valve configured to expand a refrigerant, an evaporator at which heat exchange is performed between a refrigerant and heating air, a refrigerant recirculation line diverging from a refrigerant line between the compressor and the inner condenser, connected to the accumulator, and provided to selectively recirculate a refrigerant compressed by the compressor to the accumulator, and a discharge valve installed in the refrigerant recirculation line and provided to be able to selectively discharge a refrigerant, which has passed through the refrigerant recirculation line, into the accumulator.

用于车辆的热管理系统

本公开提出一种用于车辆的热管理系统，该热管理系统包括：蓄能器，在该蓄能器处执行制冷剂的汽液分离；压缩机，被配置为压缩制冷剂；内部冷凝器，在该内部冷凝器处，执行制冷剂和加热用空气之间的热交换；外部冷凝器，在该外部冷凝器处，执行制冷剂和外部空气之间的热交换；第一膨胀阀，被配置为使制冷剂膨胀；蒸发器，在该蒸发器处，执行制冷剂和加热用空气之间的热交换；制冷剂再循环管路，从压缩机和内部冷凝器之间的制冷剂管路分支并连接到蓄能器，并且被设置为选择性地将由压缩机压缩的制冷剂再循环到蓄能器；以及排放阀，安装在制冷剂再循环管路中，并且被设置为选择性地将已经通过制冷剂再循环管路的制冷剂排放到蓄能器中。

Air conditioning system and control method therefor

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

A refrigeration system and method for controlling such a refrigeration system

A refrigeration system comprises a compressor (C) for compressing a gaseous refrigerant, such that the temperature and pressure thereof increases, wherein the boiling point thereof increases; a condenser (PLHE, DHE), in which the gaseous refrigerant from the compressor (C) exchanges heat with a high temperature heat carrier, said heat exchange resulting in the refrigerant condensing; an expansion valve (EXPV1, EXPV2) reducing the pressure of liquid refrigerant from the condenser (C), hence reducing the boiling point of the refrigerant; an evaporator (DHE, PLHE), in which the low boiling point refrigerant exchanges heat with a low temperature heat carrier, such that the refrigerant vaporizes; and a suction gas heat exchanger exchanging heat between high temperature liquid refrigerant from the condenser (PLHE, DHE) and low temperature gaseous refrigerant from the evaporator (DHE, PLHE). A balance valve (BV) is arranged to enable bypassing the high temperature liquid refrigerant such that it does not exchange heat with the low temperature gaseous refrigerant from the evaporator in the suction gas heat exchanger. Disclosed is also a method for controlling such a system.

二元冷凍装置

A refrigeration system and a method for controlling such a refrigeration system

A refrigeration system includes a compressor for compressing a gaseous refrigerant, such that the temperature and pressure thereof increases; a four-way valve controlling whether the refrigeration system is in a heating mode or a cooling mode; a condenser, in which the gaseous refrigerant from the compressor exchanges heat with a high temperature heat carrier, said heat exchange resulting in the refrigerant condensing; an expansion valve reducing the pressure of liquid refrigerant from the condenser, hence reducing the boiling point of the refrigerant; an evaporator, in which the low boiling point refrigerant exchanges heat with a low temperature heat carrier, such that the refrigerant vaporizes; and a suction gas heat exchanger exchanging heat between high temperature liquid refrigerant from the condenser and low temperature gaseous refrigerant from the evaporator. A balance valve is arranged for controlling the amount of heat exchange between the high temperature liquid refrigerant and the low temperature gaseous refrigerant in the suction gas heat exchanger by directing a flow of high temperature liquid refrigerant directly from the condenser to the expansion valve. Disclosed is also a method for controlling such a system.

Wärmemanagementsystem für fahrzeuge

Vorgeschlagen wird ein Wärmemanagementsystem für ein Fahrzeug, wobei das Wärmemanagementsystem aufweist: einen Akkumulator (11), bei welchem eine Dampf-Flüssig-Trennung eines Kältemittels durchgeführt wird, einen Verdichter (12), welcher dazu eingerichtet ist, ein Kältemittel zu verdichten, einen Innen-Kondensator (14), bei welchem ein Wärmeaustausch zwischen einem Kältemittel und Heizluft durchgeführt wird, einen Außen-Kondensator (16), bei welchem ein Wärmeaustausch zwischen einem Kältemittel und Außenluft durchgeführt wird, ein erstes Expansionsventil (18), welches dazu eingerichtet ist, ein Kältemittel zu expandieren, einen Verdampfer (19), bei welchem ein Wärmeaustausch zwischen einem Kältemittel und Heiz-/Kühlluft durchgeführt wird, eine Kältemittelrückführleitung, welche von einer Kältemittelleitung zwischen dem Verdichter (12) und dem Innen-Kondensator (14) abzweigt, mit dem Akkumulator (11) verbunden ist und dazu vorgesehen ist, um ein durch den Verdichter (12) verdichtetes Kältemittel selektiv zu dem Akkumulator (11) zurückzuführen, und ein Auslassventil (24), welches in der Kältemittelrückführleitung installiert ist und so vorgesehen ist, dass es dazu in der Lage ist, ein Kältemittel, welches die Kältemittelrückführleitung durchströmt hat, selektiv in den Akkumulator (11) abzugeben.

A plate heat exchanger

A plate heat exchanger (500) comprises a plurality of heat exchanger plates (510, 520, 530, 540) provided with a pressed pattern adapted to provide contact points keeping the heat exchanger plates on a distance from one another such that interplate flow channels are formed between said plates, said heat exchanger being provided with interplate flow 5 channels (510-520, 530-540) for a first medium exchanging heat with a second medium in interplate flow channels (520-530) and a third medium in interplate flow channels (540-510), wherein the interplate flow channels are in selective fluid communication with port openings (550, 560, 570, 580, 630, 620) for the first medium, the second medium and the third medium. The heat exchanger (500) comprises first and second integrated suction gas heat exchanger sections (ISGHX1, ISGHX2) provided in the vicinity of port openings (550, 560, 570, 580) for the second medium and third medium. Every other heat exchanger plate is formed with a pressed first pattern of ridges and grooves, and the other heat exchanger plates are formed with a pressed second pattern of ridges and grooves, wherein the first pattern of ridges and grooves is different from 15 the second pattern of ridges and grooves.

冷凍サイクル装置の制御方法

Variable refrigerant flow system

An apparatus includes a compressor, a first heat exchanger, a reheater, a first valve, a second heat exchanger, and a blower. The compressor compresses a refrigerant. The blower moves air proximate the second heat exchanger to the reheater. During a first mode of operation: the first heat exchanger removes heat from a first portion of the refrigerant from the compressor, the first valve opens such that a second portion of the refrigerant from the compressor flows to the reheater, the second heat exchanger uses the first portion of the refrigerant from the first heat exchanger and the second portion of the refrigerant from the reheater to cool air proximate the second heat exchanger, and the reheater uses the second portion of the refrigerant from the compressor to heat the air moved by the blower.

Vapor cycle cooling system for high powered devices

An example flash tank includes a first inlet configured to receive a superheated vapor refrigerant, a second inlet configured to receive a two-phase refrigerant, a vapor outlet, a liquid collection volume, and a phase separation matrix including a first fluid path fluidically coupled between the first inlet and the liquid collection volume, a second fluid path fluidically coupled between the second inlet and the liquid collection volume, and a third fluid path fluidically coupled between the vapor outlet and the liquid collection volume. The phase separation matrix is configured to radially distribute thermal mixing of a refrigerant flowing within the first, second, and third fluid paths.

Refrigerant cycle system

Refrigerant is caused to be in a superheating state without impairing the performance of a cascade heat exchanger. A refrigerant cycle system (100, 200) includes a first refrigerant circuit (1, 201), a second refrigerant circuit (2, 202), and a first cascade heat exchanger (21, 221). The first cascade heat exchanger (21, 221) exchanges heat between a first refrigerant that flows in the first refrigerant circuit (1, 201) and a second refrigerant that flows in the second refrigerant circuit (2, 202). The refrigerant cycle system (100, 200) includes a switching mechanism (13, 25, 213, 225). The switching mechanism (13, 25, 213, 225) switches a flow path of a refrigerant of at least either one of the first refrigerant circuit (1, 201) and the second refrigerant circuit (2, 202). The first cascade heat exchanger (21, 221) includes a first main heat exchanging unit (21a, 221a) and a first sub heat exchanging unit (21b, 221b). The first sub heat exchanging unit (21b, 221b) is configured to cause the first refrigerant that has passed through the first main heat exchanging unit (21a, 221a) to be in a superheating state.

冷凍サイクル装置

冷凍サイクル装置（１）では、圧縮機（３）、第１熱交換器（５）、膨張弁（９）、第２熱交換器（１１）、吸熱部（１７）および圧縮機（３）の順に、冷媒配管（３１）が接続されている。冷媒配管（３１）を流れる冷媒として、Ｒ２９０が使用されている。吸熱部（１７）は、蒸発器としての第１熱交換器（５）または第２熱交換器（１１）と、圧縮機（３）との間の冷媒配管（３１）の部分に設けられている。吸熱部（１７）は、電気品（１９ａ）に接触するように配置されている。吸熱部（１７）が設けられた冷媒配管（３１）の部分と並列になるように、分岐配管（３３）が接続されている。分岐配管（３３）には、流量調整弁（２１）が設けられている。

A plate heat exchanger

A plate heat exchanger (500) comprises a plurality of heat exchanger plates (510, 520, 530, 540) provided with a pressed pattern adapted to provide contact points keeping the heat exchanger plates on a distance from one another such that interplate flow channels are formed between said plates, said heat exchanger being provided with interplate flow 5 channels (510-520, 530-540) for a first medium exchanging heat with a second medium in interplate flow channels (520-530) and a third medium in interplate flow channels (540-510), wherein the interplate flow channels are in selective fluid communication with port openings (550, 560, 570, 580, 630, 620) for the first medium, the second medium and the third medium. The heat exchanger (500) comprises first and second integrated suction gas heat exchanger sections (ISGHX1, ISGHX2) provided in the vicinity of port openings (550, 560, 570, 580) for the second medium and third medium. Every other heat exchanger plate is formed with a pressed first pattern of ridges and grooves, and the other heat exchanger plates are formed with a pressed second pattern of ridges and grooves, wherein the first pattern of ridges and grooves is different from 15 the second pattern of ridges and grooves.

Refrigeration cycle device

In a refrigeration cycle apparatus (1), a refrigerant pipe (31) is connected to a compressor (3), a first heat exchanger (5), an expansion valve (9), a second heat exchanger (11), a heat absorber (17), and the compressor (3) sequentially in this order. R290 is used as refrigerant flowing through the refrigerant pipe (31). The heat absorber (17) is provided in a portion of the refrigerant pipe (31) between the compressor (3) and the first heat exchanger (5) or the second heat exchanger (11) serving as an evaporator. The heat absorber (17) is disposed in contact with an electric component (19a). A branch pipe (33) is connected in parallel with the portion provided with the heat absorber (17) in the refrigerant pipe (31). The branch pipe (33) is provided with a flow rate regulating valve (21).

Refrigeration cycle device

System and apparatus for energy reclaimation

The present invention discloses an evaporator (1) for use within a cooling sub-system (2) of an energy reclaim system, the evaporator (1) being adapted to receive a refrigerant liquid and expand the refrigerant into a gaseous and a liquid phase, a heat exchanger means (3) being provided to cause the refrigerant liquid to boil at low pressure while extracting heat from a fluid heat exchange medium and an integral subcooling means (4) to further superheat the refrigerant vapor for supply to a compressor (5) of the energy reclaim system.

Wärmepumpe mit einem kältemittelgekühlten Inverter

System and method for superheat regulation and efficiency improvement

A refrigeration system includes a heat exchanger configured to provide superheat control for the low temperature low pressure gas refrigerant flowing out of the evaporator and through the first side of the heat exchanger by transferring heat from the high pressure high temperature superheated gas refrigerant flowing through a second side of the heat exchanger. A modulating solenoid valve is located at the inlet of the second side of the heat exchanger and configured to modulate the flow of high pressure high temperature superheated gas refrigerant flowing through the second side of the heat exchanger. A temperature sensor is located in such a way as to measure the temperature of the gas refrigerant flowing out of the evaporator and through the first side of the heat exchanger. A controller is configured to calculate the superheat of the gas refrigerant based on the measured temperature and measured pressure of the gas refrigerant and may compare the calculated superheat to a superheat threshold. If the calculated superheat is less than the superheat threshold, the controller will modulate the flow the high pressure high temperature gas refrigerant flowing through the second side of the heat exchanger. The refrigeration system may be activated in a variety of methods by appropriate control of the valves and other system components.

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Heat pump and method for operating a heat pump

Provided is a heat pump and a method for operating a heat pump. In a heating mode, the heat pump comprises a refrigeration cycle including connected in a loop by fluid lines and in succession: a compressor, a first heat exchanger, a third heat exchanger, a second expansion valve, and a second heat exchanger. The refrigeration cycle further comprises an internal heat exchanger having a first conduit and a second conduit being in heat exchanging contact, wherein the first conduit is part of the fluid line between the third heat exchanger and the second expansion valve, and the second conduit is part of the fluid line between the second heat exchanger and the compressor, wherein the third heat exchanger is configured to reduce a temperature of the refrigerant provided from the first heat exchanger to the internal heat exchanger by giving off heat to a physical medium.

冷凍サイクル装置

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Refrigeration cycle apparatus

In a refrigeration cycle apparatus (100) according to the present disclosure, the circulation direction of refrigerant is switched between a first circulation direction and a second circulation direction opposite to the first circulation direction. The refrigeration cycle apparatus (100) includes a compressor (1), a first heat exchanger (4), a second heat exchanger (8), a third heat exchanger (6), a fourth heat exchanger (7), a first expansion valve (5A), and a second expansion valve (5B). The first circulation direction is a circulation direction in order of the compressor (1), the first heat exchanger (4), the first expansion valve (5A), the third heat exchanger (6), the fourth heat exchanger (7), the second expansion valve (5B), and the second heat exchanger (8). When a circulation direction of the refrigerant is the first circulation direction, the refrigerant from the third heat exchanger (6) exchanges heat with the refrigerant from the second heat exchanger (8) in the fourth heat exchanger (7). When a circulation direction of the refrigerant is the second circulation direction, the refrigerant from the fourth heat exchanger (7) exchanges heat with the refrigerant from the first heat exchanger (4) in the third heat exchanger (6).

Wärmepumpe mit einem kältemittelgekühlten Inverter

Die Erfindung betrifft eine Wärmepumpe. Die Wärmepumpe weist einen Verdichter und einen elektronisch kommutierten Elektromotor zum Antrieb des Verdichters auf. Die Wärmepumpe weist auch eine mit dem Elektromotor verbundene Leistungsendstufe zum Bestromen des Elektromotors auf, welche mit einem Abschnitt eines Kältemittelkreislaufs der Wärmepumpe wärmeleitend verbunden ist, sodass von der Leistungsendstufe erzeugte Verlustwärme an den Kältemittelkreislauf abgegeben werden kann. Erfindungsgemäß weist die Wärmepumpe wenigstens einen Temperatursensor auf. Der Temperatursensor ist angeordnet, eine Temperatur der Leistungsendstufe zu erfassen und ein die Temperatur repräsentierendes Temperatursignal zu erzeugen. Der Kältemittelkreislauf weist eine Bypass-Fluidleitung und wenigstens ein steuerbar ausgebildetes Ventil auf. Die Bypass-Fluidleitung ist ausgebildet, einen Kältemittelfluss an dem mit der Leistungsendstufe verbundenen Abschnitt vorbeizuführen. Das Ventil ist ausgebildet, in Abhängigkeit eines Steuersignals den Kältemittelfluss durch den Abschnitt freizugeben oder zu sperren. Die Wärmepumpe weist eine mit dem Temperatursensor verbundene Steuereinheit auf, welche ausgebildet ist, das Steuersignal in Abhängigkeit des Temperatursignals zu erzeugen.

Heat pump and method for operating a heat pump

Provided is a heat pump and a method for operating a heat pump. In a heating mode, the heat pump comprises a refrigeration cycle including connected in a loop by fluid lines and in succession: a compressor, a first heat exchanger, a third heat exchanger, a second expansion valve, and a second heat exchanger. The refrigeration cycle further comprises an internal heat exchanger having a first conduit and a second conduit being in heat exchanging contact, wherein the first conduit is part of the fluid line between the third heat exchanger and the second expansion valve, and the second conduit is part of the fluid line between the second heat exchanger and the compressor, wherein the third heat exchanger is configured to reduce a temperature of the refrigerant provided from the first heat exchanger to the internal heat exchanger by giving off heat to a physical medium.

用于车辆的热管理系统

本公开提出一种用于车辆的热管理系统，该热管理系统包括：蓄能器，在该蓄能器处执行制冷剂的汽液分离；压缩机，被配置为压缩制冷剂；内部冷凝器，在该内部冷凝器处，执行制冷剂和加热用空气之间的热交换；外部冷凝器，在该外部冷凝器处，执行制冷剂和外部空气之间的热交换；第一膨胀阀，被配置为使制冷剂膨胀；蒸发器，在该蒸发器处，执行制冷剂和加热用空气之间的热交换；制冷剂再循环管路，从压缩机和内部冷凝器之间的制冷剂管路分支并连接到蓄能器，并且被设置为选择性地将由压缩机压缩的制冷剂再循环到蓄能器；以及排放阀，安装在制冷剂再循环管路中，并且被设置为选择性地将已经通过制冷剂再循环管路的制冷剂排放到蓄能器中。

A heat pump system

A heat pump system for connection with an ultra-low district heating network, the heat pump system comprising: a piping network, a compressor configured to allow a refrigerant to flow in the piping network and perform a vapour compression refrigeration cycle, a first heat exchanger connected to the piping network and to the compressor, the first heat exchanger causing a heat-exchange between the refrigerant flowing in the piping network and water passing therethrough, a second heat exchanger connected to the piping network and to the compressor, the second heat exchanger causing a heat-exchange between the refrigerant flowing in the piping network and water passing therethrough, a sub-cooling heat exchanger configured to cool down the refrigerant flowing in the piping network, a super-heating heat exchanger configured to heat up the refrigerant flowing in the piping network, a third heat exchanger connected to a supply network being configured to preheat a fluid, a buffer tank having an inlet at the lower part of the buffer tank and an outlet at the upper part of the buffer tank, a circulation line and a controller, the circulation line configured to allow a fluid to flow therein and the controller being configured to set a setpoint and perform a distribution control of the fluid based on the setpoint, when the fluid temperature of the circulation line is equal to the setpoint, the return of the fluid to the buffer tank through the inlet is hindered, and when the fluid temperature of the circulation line is below the setpoint, the fluid is returned to the buffer tank through the inlet.

制冷循环装置

在制冷循环装置(1)中，制冷剂配管(31)依次与压缩机(3)、第1热交换器(5)、膨胀阀(9)、第2热交换器(11)、吸热部(17)和压缩机(3)连接。使用R290作为在制冷剂配管(31)中流动的制冷剂。吸热部(17)设置于作为蒸发器的第1热交换器(5)或第2热交换器(11)与压缩机(3)之间的制冷剂配管(31)的部分。吸热部(17)被配置成与电气部件(19a)接触。分支配管(33)以与设置有吸热部(17)的制冷剂配管(31)的部分并列的方式连接。在分支配管(33)设置有流量调节阀(21)。

板式换热器

板式换热器(500)包括多个换热器板(510，520，530，540)，所述换热器板设置有适于提供使换热器板彼此保持一定距离的接触点的压制图案，从而在所述板之间形成板间流动通道，所述换热器设置有板间流动通道(510‑520，530‑540)，用于第一介质与板间流动通道(520‑530)中的第二介质和板间流动通道(540‑510)中的第三介质进行换热，其中板间流动通道与用于第一介质，第二介质和第三介质的端口开口(550，560，570，580，630，620)选择性地流体连通。换热器(500)包括设置在用于第二介质和第三介质的端口开口(550，560，570，580)附近的第一和第二集成吸入气体换热器部(ISGHX1，ISGHX2)。每隔一个换热器板形成有脊和槽的压制的第一图案，其它的换热器板形成有脊和槽的压制的第二图案，其中脊和槽的第一图案不同于脊和槽的第二图案。

制冷系统和方法

一种制冷系统，包括：压缩机，用于压缩气态制冷剂，使得其温度和压力增加，而其沸点降低；冷凝器，来自压缩机的气态制冷剂在其中与高温热载体交换热量，所述热交换导致制冷剂冷凝；膨胀阀，其降低来自冷凝器的液态制冷剂的压力，从而降低制冷剂的沸点；蒸发器，低沸点制冷剂在其中与低温热载体交换热量，使得制冷剂蒸发；以及抽吸气体热交换器，其在来自冷凝器的高温液态制冷剂和来自蒸发器的低温气态制冷剂之间交换热量。进入吸气换热器的低温气态制冷剂包含一定量的低温液态制冷剂，所述低温液态制冷剂通过与来自冷凝器的高温液态制冷剂进行热交换而蒸发。还公开了一种制冷方法。

制冷系统和用于控制这种制冷系统的方法

一种制冷系统，包括：压缩机，用于压缩气态制冷剂，使得其温度和压力增加；四通阀，控制制冷系统处于加热模式或冷却模式；冷凝器，来自压缩机的气态制冷剂在其中与高温热载体交换热量，所述热交换导致制冷剂冷凝；膨胀阀，其降低来自冷凝器的液态制冷剂的压力，从而降低制冷剂的沸点；蒸发器，低沸点制冷剂在其中与低温热载体交换热量，使得制冷剂蒸发；以及吸气热交换器，其在来自冷凝器的高温液体制冷剂和来自蒸发器的低温气态制冷剂之间交换热量。平衡阀被布置成通过将高温液态制冷剂流直接从冷凝器引导到膨胀阀来控制在抽吸气体热交换器中的高温液态制冷剂和低温气态制冷剂之间的热交换量。还公开了一种用于控制这种系统的方法。

制冷剂循环系统

在不损害级联热交换器的性能的情况下，使制冷剂成为过热状态。制冷剂循环系统(100、200)包括第一制冷剂回路(1、201)、第二制冷剂回路(2、202)以及第一级联热交换器(21、221)。第一级联热交换器(21、221)使流经第一制冷剂回路(1、201)的第一制冷剂与流经第二制冷剂回路(2、202)的第二制冷剂之间进行热交换。制冷剂循环系统(100、200)具有切换机构(13、25、213、225)。切换机构(13、25、213、225)对第一制冷剂回路(1、201)和第二制冷剂回路(2、202)中的至少任意一方的制冷剂的流路进行切换。第一级联热交换器(21、221)具有第一主热交换部(21a、221a)和第一副热交换部(21b、221b)。第一副热交换部(21b、221b)用于使通过了第一主热交换部(21a、221a)的第一制冷剂处于过热状态。

制冷循环装置

在本发明的制冷循环装置(100)中，制冷剂的循环方向在第一循环方向和与第一循环方向相反的第二循环方向之间进行切换。制冷循环装置(100)具备压缩机(1)、第一热交换器(4)、第二热交换器(8)、第三热交换器(6)、第四热交换器(7)、第一膨胀阀(5A)及第二膨胀阀(5B)。第一循环方向是按压缩机(1)、第一热交换器(4)、第一膨胀阀(5A)、第三热交换器(6)、第四热交换器(7)、第二膨胀阀(5B)及第二热交换器(8)的顺序循环的循环方向。在制冷剂的循环方向为第一循环方向的情况下，在第四热交换器(7)中，来自第三热交换器(6)的制冷剂与来自第二热交换器(8)的制冷剂进行热交换。在制冷剂的循环方向为第二循环方向的情况下，在第三热交换器(6)中，来自第四热交换器(7)的制冷剂与来自第一热交换器(4)的制冷剂进行热交换。

空气调节装置

空气调节装置(1)具备：过冷热交换器(23)，其用于使在室外热交换器(22)与膨胀阀(32)之间的第一流路中流动的制冷剂过冷；流路切换阀(25)，其将室内热交换器(31)与压缩机(20)之间的流路切换为不通过过冷热交换器(23)的第二流路和通过过冷热交换器(23)的第三流路中的任意流路；旁通回路(5)，其从第一流路分支，通过过冷热交换器(23)而与主回路(4)合流；旁通调整阀(26)，其设置于旁通回路(5)；以及控制装置(60)。控制装置(60)在制冷运转中，在不是低负荷时，选择第二流路，并且打开旁通调整阀(26)，在低负荷时，选择第三流路，并且关闭旁通调整阀(26)。