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Heat pump and air conditioning system incorporating thermal storage

  • US 5,507,337 A
  • Filed: 08/02/1994
  • Issued: 04/16/1996
  • Est. Priority Date: 03/23/1993
  • Status: Expired due to Term
First Claim
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1. A heat pump and air conditioning system operable in at least one of a heating mode and a cooling mode, both modes including a thermal charging cycle and a thermal discharging cycle, the system comprisinga refrigerant circuit including a compressor and, in serial connection, a first heat exchanger, an expansion device, and a second heat exchanger,a thermal storage device,first means for connecting the thermal storage device in parallel with the first heat exchanger,a first pair of three-way valves positioned to block flow to and from the first connecting means,second means for connecting the thermal storage device in parallel with the second heat exchanger,a second pair of three-way valves positioned to block flow to and from the second connecting means andmeans for controlling the first and second pairs of three-way valves so that during operation in the heating mode, charging cycle, refrigerant from the refrigerant circuit flows in the first connecting means through the thermal storage device, and during operation in the cooling mode, discharging cycle, refrigerant from the refrigerant circuit flows in the second connecting means through the thermal storage device.

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