A dynamic receiver is included in parallel to an expander of a heating, ventilation, air conditioning, and refrigeration (HVACR) system. The dynamic receiver allows control of the refrigerant charge of the HVACR system to respond to different operating conditions. The dynamic receiver can be filled or emptied in response to the subcooling observed in the HVACR system compared to desired subcooling for various operating modes. The HVACR system can include a line directly conveying working fluid from compressor discharge to the dynamic receiver to allow emptying of the dynamic receiver to be assisted by injection of the compressor discharge.

A heat pump system includes a refrigerant circuit that has a compressor, a first heat exchanger, a second heat exchanger, a reheat heat exchanger, a modulating valve, and a reversing valve. The reversing valve is configured to transition between a first configuration to direct refrigerant from the compressor toward the modulating valve and a second configuration to direct the refrigerant from the compressor toward the first heat exchanger. The heat pump system also includes control circuitry configured to concurrently maintain the reversing valve in the first configuration and adjust a position of the modulating valve to direct a first portion of the refrigerant from the modulating valve to the second heat exchanger and a second portion of the refrigerant from the modulating valve to the reheat heat exchanger based on an operating mode of the heat pump system.

The present disclosure relates to a climate management system having an outdoor coil of a refrigerant circuit, a first indoor coil of the refrigerant circuit, and a second indoor coil of the refrigerant circuit disposed downstream of the first indoor coil with respect to a flow of air directed across the first indoor coil and the second indoor coil. The climate management system is configured to, in a cooling mode, direct refrigerant flow in a first direction through the outdoor coil, direct refrigerant flow through the first indoor coil, and restrict refrigerant flow from the second indoor coil. The climate management system is also configured to, in a heating mode, direct refrigerant flow in a second direction through the outdoor coil, direct refrigerant flow through the second indoor coil, and restrict refrigerant flow from the first indoor coil. The second direction is opposite the first direction.

A refrigerant distributor branches refrigerant flowing in a refrigerant circuit into three, and includes a first bifurcate flow divider including a first pipe portion forming one inflow port, a second pipe portion and a third pipe portion forming two outflow ports communicating with the inflow port of the first pipe portion, and a second bifurcate flow divider including a fourth pipe portion forming one inflow port, and a fifth pipe portion and a sixth pipe portion forming two outflow ports communicating with the inflow port of the fourth pipe portion. The outflow port of the third pipe portion and the inflow port of the fourth pipe portion communicate with each other, and an angle formed by a first plane passing through the first bifurcate flow divider and a second plane passing through the second bifurcate flow divider is between 60 and 120 degrees.

A cooling system of a vehicle, including a coolant circuit, which can be operated as a cooling circuit for an AC operation and as a heat pump circuit for a heating operation, an evaporator, a coolant compressor, a heat exchanger in the form of a coolant condenser or gas cooler for the coolant circuit or in the form of a heat pump evaporator for the heat pump circuit, a first expansion element which is paired with the evaporator, a second expansion element, the heat pump evaporator function of which is paired with the heat exchanger, and an inner heat exchanger with a high-pressure section and a low-pressure section. The low-pressure section is fluidically connected to the downstream coolant compressor. The high-pressure section of the inner heat exchanger is arranged in a coolant circuit section which connects the second expansion element to the heat exchanger.

An air conditioner includes a refrigerant circuit which connects an outdoor circuit and a plurality of indoor circuits connected in parallel. The air conditioner includes a leak detection section which detects leak of a refrigerant from the indoor circuits, and a control section which circulates the refrigerant to perform a refrigeration cycle when the leak detection section detects leak of the refrigerant such that the refrigerant in the indoor circuits of the refrigerant circuit is at a low pressure. Providing the control section in the air conditioner can reduce the leak of the refrigerant from the indoor circuit at low cost.

The present disclosure relates to a climate management system having an outdoor coil of a refrigerant circuit, a first indoor coil of the refrigerant circuit, and a second indoor coil of the refrigerant circuit disposed downstream of the first indoor coil with respect to a flow of air directed across the first indoor coil and the second indoor coil. The climate management system is configured to, in a cooling mode, direct refrigerant flow in a first direction through the outdoor coil, direct refrigerant flow through the first indoor coil, and restrict refrigerant flow from the second indoor coil. The climate management system is also configured to, in a heating mode, direct refrigerant flow in a second direction through the outdoor coil, direct refrigerant flow through the second indoor coil, and restrict refrigerant flow from the first indoor coil. The second direction is opposite the first direction.

A modulating refrigeration system includes an evaporation unit and a condensing unit. The evaporation unit generates a first output airflow comprising a lower temperature, a lower relative humidity, or both than a first supply airflow and directs the first output airflow into a building. The condensing unit generates a second output airflow at a higher temperature than a second supply airflow and discharges the second output airflow to an unconditioned space. The evaporation unit comprises a first valve operable to direct a portion of refrigerant to a secondary evaporator and primary evaporator or to direct the entire flow of refrigerant to the primary evaporator and bypassing the secondary evaporator.

A heat pump system in a vehicle connected with a refrigerant line through which refrigerant flows for controlling cooling/heating of a cabin of the vehicle, including a compressor for compressing refrigerant, an outdoor heat exchanger for condensing high temperature and high pressure refrigerant compressed at the compressor, and an expansion valve for expanding the refrigerant compressed thus, may include an indoor heat exchanger arranged between the compressor and the expansion valve connected to one another with the refrigerant line, and having a partitioned inside to form individual flow passages, and a first valve connected to the compressor, the outdoor heat exchanger and the indoor heat exchanger with the refrigerant line for changing a direction of a refrigerant flow according to cooling, heating, and dehumidifying modes of the vehicle to control the refrigerant flow along the refrigerant line.

A multi-air conditioner may comprise: an outdoor unit; a plurality of indoor units; a header module including an inlet pipe, branching to supply a refrigerant compressed by the outdoor unit, and a collection pipe for heat-exchanging the refrigerant by the plurality of indoor units collected at the outdoor unit; and connection kits detachably coupled between the header module and the plurality of indoor units. The connection kit may include: a connection inlet pipe; a connection collection pipe; connection regulating valves provided at the connection inlet pipe and the connection collection pipe to suppress the refrigerant from being supplied to the plurality of indoor units; and a connection bypass portion connecting the connection inlet pipe and the connection collection pipe to bypass, to the connection collection pipe, the refrigerant flowing into the connection inlet pipe.