摘要:
A flow control valve includes an electronic expansion valve and a solenoid valve. The electronic expansion valve is configured to regulate the flow rate of the refrigerant. The solenoid valve is a normally closed solenoid valve, which includes a coil of the solenoid valve and a valve core of the solenoid valve. After the coil of the solenoid valve is de-energized, the valve core of the solenoid valve shuts off a refrigerant flow path, to prevent the refrigerant such as carbon dioxide from leaking to a compartment due to rupture of a low pressure side of the system which may otherwise cause passengers in the compartment to be suffocated. The present application further provides a method for controlling the flow control valve, and the structure of the flow control valve is further optimized by the control programs of the flow control valve.
摘要:
The present disclosure provides a refrigerator including a compressor (160), a condenser (161), a refrigerating chamber evaporator (181), a freezing chamber evaporator (182); a first capillary (212a') and a second capillary (212b') configured to reduce a pressure of refrigerant connected to the freezing chamber evaporator (182) to form refrigerant passages distinguished from each other; a third capillary (212c') configured to reduce a pressure of refrigerant connected to the refrigerating chamber evaporator (181) to form a refrigerant passage; and a 4-way valve (200) provided with an inlet connected to the condenser (161), and a first through a third outlet (212a, 212b, 212c) connected to the first through the third capillary to selectively distribute refrigerant to at least one of the first through the third capillary (212a' - 212c') according to the opening and closing of the first through the third outlet (212a - 212c).
摘要:
The present disclosure provides a refrigerator including a compressor (160), a condenser (161), a refrigerating chamber evaporator (181), a freezing chamber evaporator (182); a first capillary (212a') and a second capillary (212b') configured to reduce a pressure of refrigerant connected to the freezing chamber evaporator (182) to form refrigerant passages distinguished from each other; a third capillary (212c') configured to reduce a pressure of refrigerant connected to the refrigerating chamber evaporator (181) to form a refrigerant passage; and a 4-way valve (200) provided with an inlet connected to the condenser (161), and a first through a third outlet (212a, 212b, 212c) connected to the first through the third capillary to selectively distribute refrigerant to at least one of the first through the third capillary (212a' - 212c') according to the opening and closing of the first through the third outlet (212a - 212c).
摘要:
An air-conditioning apparatus includes a refrigerant circuit including a low-pressure shell structure compressor into which a refrigerant flowing through an injection pipe flows, a first heat exchanger, a second heat exchanger, a first expansion device, a refrigerant flow switching device, and a second expansion device configured to allow the refrigerant which has passed through the first expansion device and flows from the second heat exchanger to the first heat exchanger to have an intermediate pressure, the compressor, the first heat exchanger, the second heat exchanger, the first expansion device, the refrigerant flow switching device, and the second expansion device being connected by pipes to constitute the refrigerant circuit, and further includes a controller that controls an amount of refrigerant flowing through the injection pipe into a compression chamber. While the first heat exchanger is allowed to function as a condenser, a part of a high-pressure refrigerant flowing from the first heat exchanger to the second heat exchanger is enabled to flow through the injection pipe, and while the first heat exchanger is allowed to function as an evaporator, a part of the refrigerant allowed to have the intermediate pressure by the second expansion device is enabled to flow through the injection pipe, such that a discharge temperature of the compressor is controlled so as not to become too high in any of cooling and heating operations.
摘要:
Apparatus for controlling a cryogenic cooling system is described. A supply gas line and a return gas line are provided which are coupled to a compressor and to a mechanical refrigerator via a coupling element. The coupling element is in gaseous communication with the supply and return gas lines and supplies gas to the mechanical refrigerator. The pressure of the supplied gas is modulated by the coupling element in a cyclical manner. A pressure sensing apparatus monitors the pressure in at least one of the supply and return gas lines. A control system is used to modulate the frequency of the cyclical gas pressure supplied by the coupling element in accordance with the pressure monitored by the pressure sensing apparatus. An associated method of controlling such a system is also described.
摘要:
A method for controlling an aircraft air conditioning system includes the steps of detecting an operating state of an air conditioning unit of the aircraft air conditioning system and controlling the temperature of a process air mass flow supplied to the air conditioning unit in dependence on the operating state of the air conditioning unit.
摘要:
An air-conditioning apparatus is capable of performing a heating-defrosting operation where a specific one of a plurality of parallel heat exchangers is a heat exchanger to be defrosted and serves as a condenser while at least one parallel heat exchanger other than the heat exchanger to be defrosted serves as an evaporator. The air-conditioning apparatus includes a liquid refrigerant transporting unit for transferring liquid refrigerant from an accumulator to the heat exchanger to be defrosted. To perform the heating-defrosting operation, the air-conditioning apparatus supplies, to the heat exchanger to be defrosted, the liquid refrigerant transferred by the liquid refrigerant transporting unit.
摘要:
The present disclosure provides a refrigerator including a compressor (160), a condenser (161), a refrigerating chamber evaporator (181), a freezing chamber evaporator (182); a first capillary (212a') and a second capillary (212b') configured to reduce a pressure of refrigerant connected to the freezing chamber evaporator (182) to form refrigerant passages distinguished from each other; a third capillary (212c') configured to reduce a pressure of refrigerant connected to the refrigerating chamber evaporator (181) to form a refrigerant passage; and a 4-way valve (200) provided with an inlet connected to the condenser (161), and a first through a third outlet (212a, 212b, 212c) connected to the first through the third capillary to selectively distribute refrigerant to at least one of the first through the third capillary (212a' - 212c') according to the opening and closing of the first through the third outlet (212a - 212c).
摘要:
An air-conditioning apparatus is capable of performing a heating-defrosting operation where a specific one of a plurality of parallel heat exchangers is a heat exchanger to be defrosted and serves as a condenser while at least one parallel heat exchanger other than the heat exchanger to be defrosted serves as an evaporator. The air-conditioning apparatus includes a liquid refrigerant transporting unit for transferring liquid refrigerant from an accumulator to the heat exchanger to be defrosted. To perform the heating-defrosting operation, the air-conditioning apparatus supplies, to the heat exchanger to be defrosted, the liquid refrigerant transferred by the liquid refrigerant transporting unit.