In some aspects, the techniques described herein relate to a refrigerant compressor, including: a first cooling line configured to cool power electronics; a second cooling line configured to cool a motor of the compressor; a first valve operable to selectively restrict flow through the first cooling line, wherein the first valve is mounted to a baseplate; and a second valve operable to selectively restrict flow through the second cooling line, wherein the second valve is mounted to the baseplate.

In some aspects, the techniques described herein relate to a refrigerant compressor, including: a first cooling line configured to cool power electronics; a second cooling line configured to cool a motor of the compressor; a first valve operable to selectively restrict flow through the first cooling line, wherein the first valve is mounted to a baseplate; and a second valve operable to selectively restrict flow through the second cooling line, wherein the second valve is mounted to the baseplate.

An integrated air conditioning system includes an outdoor unit, an indoor unit, and a ventilation device. The ventilation device includes a housing including an inlet flow path, and an outlet flow path, a total heat exchanger in which air flowing through the inlet flow path and air flowing through the outlet flow path exchange heat with each other, a first heat exchanger disposed on the inlet flow path to receive a refrigerant from the outdoor unit, a second heat exchanger disposed upstream of the first heat exchanger on the inlet flow path and connected to the first heat exchanger to be supplied with refrigerant discharged from the first heat exchanger, a first expansion device to expand the refrigerant supplied to the first heat exchanger from the outdoor unit, and a second expansion device to expand the refrigerant discharged from the first heat exchanger and supplied to the second heat exchanger.

An integrated air conditioning system includes an outdoor unit, an indoor unit, and a ventilation device. The ventilation device includes a housing including an inlet flow path, and an outlet flow path, a total heat exchanger in which air flowing through the inlet flow path and air flowing through the outlet flow path exchange heat with each other, a first heat exchanger disposed on the inlet flow path to receive a refrigerant from the outdoor unit, a second heat exchanger disposed upstream of the first heat exchanger on the inlet flow path and connected to the first heat exchanger to be supplied with refrigerant discharged from the first heat exchanger, a first expansion device to expand the refrigerant supplied to the first heat exchanger from the outdoor unit, and a second expansion device to expand the refrigerant discharged from the first heat exchanger and supplied to the second heat exchanger.

An integrated air conditioning system includes a ventilation device comprising a first temperature sensor, a first humidity sensor, and a heat exchanger installed on the inlet flow path. An indoor unit configured to discharge heat-exchanged air into an indoor space. An outdoor unit configured to supply a refrigerant to the ventilation device and the indoor unit. A controller connected to the ventilation device, the indoor unit, and the outdoor unit. The controller configured to obtain an indoor temperature from the first temperature or the second temperature sensor. The controller configured to obtain indoor humidity from the first humidity sensor or the second humidity sensor and configured to control at least one of the ventilation device and the indoor unit based on the indoor temperature and the indoor humidity.

An integrated air conditioning system includes a ventilation device comprising a first temperature sensor, a first humidity sensor, and a heat exchanger installed on the inlet flow path. An indoor unit configured to discharge heat-exchanged air into an indoor space. An outdoor unit configured to supply a refrigerant to the ventilation device and the indoor unit. A controller connected to the ventilation device, the indoor unit, and the outdoor unit. The controller configured to obtain an indoor temperature from the first temperature or the second temperature sensor. The controller configured to obtain indoor humidity from the first humidity sensor or the second humidity sensor and configured to control at least one of the ventilation device and the indoor unit based on the indoor temperature and the indoor humidity.

A vapor injection heat pump system and an operation method is disclosed. The operation method includes a compressor, an indoor heat exchanger, a vapor injection module, an outdoor heat exchanger, and an evaporator includes an operation of performing control in one of a first heating mode which is a non-vapor injection heating mode in which a refrigerant introduced into the module is introduced into the outdoor heat exchanger and a second heating mode which is a vapor injection heating mode in which some of the refrigerant introduced into the vapor module is introduced into the compressor and the remaining refrigerant is introduced into the outdoor exchanger, wherein, in the operation of performing control, a flow of the refrigerant is maintained in the vapor injection module when the first heating mode is switched to the second heating mode or the second heating mode is switched to the first heating mode.

A vapor injection heat pump system and an operation method is disclosed. The operation method includes a compressor, an indoor heat exchanger, a vapor injection module, an outdoor heat exchanger, and an evaporator includes an operation of performing control in one of a first heating mode which is a non-vapor injection heating mode in which a refrigerant introduced into the module is introduced into the outdoor heat exchanger and a second heating mode which is a vapor injection heating mode in which some of the refrigerant introduced into the vapor module is introduced into the compressor and the remaining refrigerant is introduced into the outdoor exchanger, wherein, in the operation of performing control, a flow of the refrigerant is maintained in the vapor injection module when the first heating mode is switched to the second heating mode or the second heating mode is switched to the first heating mode.

An improved ASHP having an integrated hydronic loop for thermal energy storage is provided. The hydronic loop includes a phase change material storage module to release energy capacity during peak electricity hours. The ASHP further includes an indoor air-to-refrigerant heat exchanger, an outdoor air-to-refrigerant heat exchanger. a refrigerant-to-water heat exchanger, three electronic expansion valves to control refrigerant flow, and a multi-capacity compressor with a suction line accumulator to store excess refrigerant charge. The ASHP includes at least six working modes of operation, including: (1) space cooling mode: (2) cooling energy charge/simultaneous space cooling and cooling energy charge/defrost mode: (3) cooling storage discharge mode: (4) space heating mode: (5) heating energy charge mode: and (6) heating storage discharge mode. This and other embodiments are uniquely suited for residential space cooling, space heating, water heating, and commercial applications with high water heating and space cooling demands.

An improved ASHP having an integrated hydronic loop for thermal energy storage is provided. The hydronic loop includes a phase change material storage module to release energy capacity during peak electricity hours. The ASHP further includes an indoor air-to-refrigerant heat exchanger, an outdoor air-to-refrigerant heat exchanger. a refrigerant-to-water heat exchanger, three electronic expansion valves to control refrigerant flow, and a multi-capacity compressor with a suction line accumulator to store excess refrigerant charge. The ASHP includes at least six working modes of operation, including: (1) space cooling mode: (2) cooling energy charge/simultaneous space cooling and cooling energy charge/defrost mode: (3) cooling storage discharge mode: (4) space heating mode: (5) heating energy charge mode: and (6) heating storage discharge mode. This and other embodiments are uniquely suited for residential space cooling, space heating, water heating, and commercial applications with high water heating and space cooling demands.