A three-pipe multi-split hot water system, including: an outdoor unit, the outdoor unit including a compressor, an oil separator, a first switching apparatus, a second switching apparatus, a fin heat exchanger, a double-pipe heat exchanger, a compressor heat dissipation module, a plate heat exchanger, a first electronic expansion valve, a second electronic expansion valve, a third electronic expansion valve, and a gas-liquid separator; at least two indoor units, any one of the indoor units including an indoor unit heat exchanger, a fourth electronic expansion valve, and an indoor unit fan; and a hydraulic module, the hydraulic module including a refrigerant-water heat exchanger, a water pump, a water temperature detection sensor, a water flow switch, a solenoid valve, and a fifth electronic expansion valve, where the outdoor unit is connected to any one of the indoor units and to the hydraulic module by a gas pipe and a liquid pipe.

The invention relates to a valve for controlling a coolant circuit of a refrigerating system, preferably having a heat pump function, having a housing, which has at least one inlet opening and at least one outlet opening, having a regulating chamber provided in the housing, which extends between the at least one inlet opening and the at least one outlet opening, having a plugging opening provided on the housing, which is adjacent to the regulating chamber, having a valve arrangement, which is insertable at least partially into the regulating chamber, by means of which a current path of a medium between the at least one inlet opening and the at least on outlet opening is controllable, having a rotary slide arrangement, arranged in the regulating chamber, of the valve arrangement, which has a control disc, which is rotatable in relation to the at least one rotary slide support, wherein the at least one rotary slide support is provided non-rotationally to the housing and is allocated to the at least one outlet opening, wherein the at least one rotary slide support is mounted floatingly to the housing.

The invention relates to a valve for controlling a coolant circuit of a refrigerating system, preferably having a heat pump function, having a housing, which has at least one inlet opening and at least one outlet opening, having a regulating chamber provided in the housing, which extends between the at least one inlet opening and the at least one outlet opening, having a plugging opening provided on the housing, which is adjacent to the regulating chamber, having a valve arrangement, which is insertable at least partially into the regulating chamber, by means of which a current path of a medium between the at least one inlet opening and the at least on outlet opening is controllable, having a rotary slide arrangement, arranged in the regulating chamber, of the valve arrangement, which has a control disc, which is rotatable in relation to the at least one rotary slide support, wherein the at least one rotary slide support is provided non-rotationally to the housing and is allocated to the at least one outlet opening, wherein the at least one rotary slide support is mounted floatingly to the housing.

A system and method for dual compressor modulation by controlling a flow of refrigerant in a reversing valve. A method includes receiving, by a control board, a command for operating a reversing valve in different modes. The reversing valve includes a first tube, a second tube, a third tube, a fourth tube and a fifth tube. The method includes determining a position for operating the reversing valve in a first position or a second position in a first mode and in a third position or a fourth position in a second mode. The method includes controlling a flow of refrigerant based on the command and the position by connecting the fourth tube with a first compressor in the first/third position and connecting the fifth tube with a second compressor in the second/fourth position.

A system and method for dual compressor modulation by controlling a flow of refrigerant in a reversing valve. A method includes receiving, by a control board, a command for operating a reversing valve in different modes. The reversing valve includes a first tube, a second tube, a third tube, a fourth tube and a fifth tube. The method includes determining a position for operating the reversing valve in a first position or a second position in a first mode and in a third position or a fourth position in a second mode. The method includes controlling a flow of refrigerant based on the command and the position by connecting the fourth tube with a first compressor in the first/third position and connecting the fifth tube with a second compressor in the second/fourth position.

If a first condition that an intermediate pressure corresponding to a pressure of an intermediate flow path is greater than a predetermined value is satisfied in an operation in which first, second, and third compressors are operated, the control unit executes a first action of increasing the number of revolutions of the third compressor.

A heating and cooling (HVAC) system that includes a compressor; a first heat exchanger; a second heat exchanger; a first expansion valve positioned between the first heat exchanger and the second heat exchanger; a first reversing valve that permits the system to operate in a first mode and a second mode; and a thermal battery including a phase change material therein that is configured to selectively store and release thermal energy received from a working fluid.

A heating and cooling (HVAC) system that includes a compressor; a first heat exchanger; a second heat exchanger; a first expansion valve positioned between the first heat exchanger and the second heat exchanger; a first reversing valve that permits the system to operate in a first mode and a second mode; and a thermal battery including a phase change material therein that is configured to selectively store and release thermal energy received from a working fluid.

A refrigeration cycle device of the embodiment includes an indoor unit, a first outdoor unit and a second outdoor unit, and a control unit. The second outdoor unit includes a four-way valve. The four-way valve includes a main valve having a main valve body and a sub-valve having a sub-valve body. The main valve body is movable between a first position and a second position. The sub-valve body is driven by a solenoid and is movable between a third position and a fourth position. In case in which the first outdoor unit is operated and the second outdoor unit is stopped, when the main valve body is not at the first position, the control unit disposes the sub-valve body at the fourth position and then moves the sub-valve body to the third position.

A refrigeration cycle device of the embodiment includes an indoor unit, a first outdoor unit and a second outdoor unit, and a control unit. The second outdoor unit includes a four-way valve. The four-way valve includes a main valve having a main valve body and a sub-valve having a sub-valve body. The main valve body is movable between a first position and a second position. The sub-valve body is driven by a solenoid and is movable between a third position and a fourth position. In case in which the first outdoor unit is operated and the second outdoor unit is stopped, when the main valve body is not at the first position, the control unit disposes the sub-valve body at the fourth position and then moves the sub-valve body to the third position.