A heat pump system for a vehicle includes an air conditioner circulating a refrigerant through a refrigerant line, a coolant circulation device circulating a coolant through a coolant line, a first chiller connected to the coolant circulation device through the coolant line, connected to the refrigerant line through a first refrigerant connection line, and heat-exchanges a selectively introduced coolant with a refrigerant supplied from the air conditioner to control a temperature of a coolant, and a second chiller connected to the coolant circulation device through the coolant line, connected to a second refrigerant connection line so that a refrigerant is supplied from the air conditioner, and increases a temperature of a refrigerant by heat-exchanging a coolant and a refrigerant so that waste heat is recovered from a coolant selectively flowing thereinto, wherein the air conditioner includes a gas injection part that bypasses some of a refrigerant passing through a condenser to a compressor to increase a flow rate of a refrigerant circulating in the refrigerant line.

A vehicle HVAC system includes a compressor, a first heat exchanger for exchanging heat between the refrigerant outside air, a first check valve set, a first expansion device for decompressing a first portion of the refrigerant, a second heat exchanger for exchanging heat between the first portion of the refrigerant and a second portion of the refrigerant, a second expansion device for decompressing the second portion of the refrigerant, a second check valve set, a third heat exchanger for exchanging heat between the refrigerant and inside air, and a selector valve for switching between a heating mode and a cooling mode. The first check valve set and the second check valve set together maintain a constant flow direction through the first expansion device, the second heat exchanger, and the second expansion device in the heating mode and the cooling mode.

An object of the present invention is to provide a vehicle air conditioning device that can solve the decrease of a circulation refrigerant quantity while effectively using the heat of a temperature control object in heating a cabin. The heating operation of a vehicle air conditioning device (1) includes an external air heat absorption heating mode for heating a cabin in a manner that a refrigerant discharged from a compressor (2) radiates heat in a radiator (4), the refrigerant is decompressed, and then the refrigerant absorbs heat in an outdoor heat exchanger (7), and a temperature control object heat absorption heating mode for heating the cabin in a manner that the refrigerant absorbs heat in a refrigerant-heat medium heat exchanger (64), and these modes are performed while being switched. The heating operation is started in the external air heat absorption heating mode.

There is provided an electric compressor capable of achieving an effective and stable noise reduction effect by making a ground pattern of a control device conductive to a housing at a short distance. An electric compressor 1 is configured so that a control board 17 and an HV filter board 18 of a control device 4 are accommodated in an accommodating section 9 configured in a housing 3, and the accommodating section 9 is closed by a cover member constituting a part of the housing 3. Ground patterns 26 to 28 configured on the control board 17 and the HV filter board 18 are made conductive to the cover member or a side wall 3A of the accommodating section 9.

There is provided a vehicle front portion structure, including: a pair of front side members, each front side member including a main body portion, an upper flange portion and a lower flange portion, the main body portion forming a chamber when viewed in the vehicle front-rear direction, and the upper flange portion and lower flange portion extending in a vehicle vertical direction from the main body portion; a motor disposed fixed to the vehicle body; an air compressor that, when viewed from the vehicle front-rear direction, is disposed between one of the front side members and the motor, in the vehicle width direction; and a connection portion that is provided at the air compressor and that, when viewed from the vehicle front-rear direction, is disposed at the vehicle upper side or vehicle lower side relative to the main body portions, wiring being connected to the connection portion.

An internal return pump is disclosed for a heat engine converting energy from a vapor source to an output device. The heat engine comprises a heat engine body having a sealed first and a second heat engine body end with a heat engine piston is located in the heat engine bore. A heat engine piston rod is connected to the heat engine piston and extending from the second heat engine body end. A first valve and a second valve assembly communicating with the heat engine bore for reciprocating the heat engine piston within the heat engine bore. A condensate pump operated by the heat engine piston rod extending from the second heat engine body end for pumping low pressure vapor to the low pressure vapor return of the vapor source. An output section connecting said heat engine piston rod extending from said second heat engine body end to the output device.

The present disclosure discloses a compressor, an air conditioning system and a vehicle. The compressor comprises a compression cavity, and further comprises a flash cavity capable of flashing a liquid refrigerant, and a communicating passage that communicates a flash cavity gas outlet of the flash cavity and an enthalpy increasing gas supply port of the compression cavity; the flash cavity is provided with an inlet and a liquid outlet, the inlet of the flash cavity is configured to be communicated with an outlet of a condenser, and the liquid outlet of the flash cavity is configured to be communicated with an inlet of an evaporator. The air conditioning system comprises the compressor, the evaporator, the condenser, a flasher, and various pipelines for connecting the entire system. The compressor comprises the flash cavity with a flash function, so that the entire enthalpy increasing system is simpler, the space for an additional flasher structure is saved, and the enthalpy increasing system is more suitable for a vehicle-mounted air conditioning system with a limited space. The present disclosure also discloses a vehicle, particularly an electric vehicle, using the air conditioning system.

The present disclosure discloses a compressor, an air conditioning system and a vehicle. The compressor comprises a compression cavity, and further comprises a flash cavity capable of flashing a liquid refrigerant, and a communicating passage that communicates a flash cavity gas outlet of the flash cavity and an enthalpy increasing gas supply port of the compression cavity; the flash cavity is provided with an inlet and a liquid outlet, the inlet of the flash cavity is configured to be communicated with an outlet of a condenser, and the liquid outlet of the flash cavity is configured to be communicated with an inlet of an evaporator. The air conditioning system comprises the compressor, the evaporator, the condenser, a flasher, and various pipelines for connecting the entire system. The compressor comprises the flash cavity with a flash function, so that the entire enthalpy increasing system is simpler, the space for an additional flasher structure is saved, and the enthalpy increasing system is more suitable for a vehicle-mounted air conditioning system with a limited space. The present disclosure also discloses a vehicle, particularly an electric vehicle, using the air conditioning system.

Systems and methods for lubricant management of a compressor in an HVACR system are disclosed. A heat transfer circuit can utilize a working fluid to provide heating or cooling includes a compressor for compressing the working fluid and a heat source configured to increase a suction temperature of the working fluid entering the compressor. One or more lubricant rheological properties in a compressor system based on measurements taken at or near a bearing cavity of the compressor are determinable. A lubricant reservoir can be in thermal communication with a discharge flow path of the compressor. An internal heat exchanger can be disposed within a compressor for improving viscosity of the lubricant to be cycled back into the compressor. A heater can be located on a fluid line between a lubricant separator and a lubricant inlet. Condenser fans can be controlled.

A capacity control valve includes a valve housing formed with a discharge port, a suction port, and first and second control ports, a rod movably arranged in the valve housing and driven by a solenoid, a CS valve configured to control a fluid flow between the first control port and the suction port in accordance with a movement of the rod, and a DC valve configured to control a fluid flow between the second control port and the discharge port in accordance with the movement of the rod. In a non-energization state, the CS valve is closed and the DC valve is closed. As the energization of the solenoid becomes larger, the CS valve transitions from a closed state to an open state and the DC valve transitions from a closed state to an open state.