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A heat pump refrigeration circuit for heating a space, cooling a space, heating a liquid, heating a space and heating a liquid or for cooling a space and heating a liquid in which indoor and outdoor heat exchangers, a liquid heat exchanger and liquid supply means, compressor, conduit and valve means

A heat pump refrigeration circuit for heating a space, cooling a space, heating a liquid, heating a space and heating a liquid or for cooling a space and heating a liquid in which indoor and outdoor heat exchangers, a liquid heat exchanger and liquid supply means, compressor, conduit and valve means are provided. The liquid heat exchanger is disposed in the hot vapor line, and liquid is circulated therethrough when liquid heating is required. The liquid heat exchanger may be used as a desuperheater or as a condenser, and the indoor and outdoor heat exchangers may be used as condensers or evaporators, depending upon the path of refrigerant flow, as determined by the valve positions. Bypassed heat exchangers are vented to compressor suction for maintaining refrigerant charge control.

대표청구항 ▼

A refrigeration circuit comprising an indoor heat exchanger having first and second refrigerant flow connections; an outdoor heat exchanger having first and second flow connections; a compressor having a suction port and a discharge port; a liquid heat exchanger having a refrigerant inlet in communi

A refrigeration circuit comprising an indoor heat exchanger having first and second refrigerant flow connections; an outdoor heat exchanger having first and second flow connections; a compressor having a suction port and a discharge port; a liquid heat exchanger having a refrigerant inlet in communication with said compressor discharge and having a refrigerant outlet; and conduit and valve means for selectively placing said flow connections, said suction port and said refrigerant outlet in flow communication by different conduit paths, including a. a first path wherein said refrigerant outlet of said liquid heat exchanger is connected to said first flow connection of said indoor heat exchanger, said second flow connection of said indoor heat exchanger is connected to said second flow connection of said outdoor heat exchanger, and said first flow connection of said outdoor heat exchanger is connected to said compressor suction port; b. a second path wherein said refrigerant outlet is connected to said first flow connection of said outdoor heat exchanger, said second flow connection of said outdoor heat exchanger is connected to said second flow connection of said indoor heat exchanger, and said first flow connection of said indoor heat exchanger is connected to said compressor suction port; c. a third path wherein said refrigerant outlet is connected to said second flow connection of said indoor heat exchanger, said first flow connection of said indoor heat exchanger is connected to said compressor suction port, said second flow connection of said outdoor heat exchanger is effectively closed, and said first flow connection of said outdoor heat exchanger is connected to said compressor suction port; and d. a fourth path wherein said refrigerant outlet is connected to said second flow connection of said outdoor heat exchanger, said first flow connection of said outdoor heat exchanger is connected to said compressor suction port, and second flow connection of said indoor heat exchanger is effectively closed, and said first flow connection of said indoor heat exchanger is connected to said compressor suction port.