Heating/cooling system
AssigneeSanyo Electric Co., Ltd.
InventorsKenzo Matsumoto, Yoshio Watabe, Shigeya Ishigaki, Hiroshi Nishikawa
Life of this patent
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Abstract
There is provided a heating/cooling system capable of reducing power consumption. The heating/cooling system has a receiving room capable of using hot air and cold air in a switching manner, and comprises a refrigerant circuit which comprises a compressor, a gas cooler, a radiator, an expansion valve, an evaporator, and the like, in which carbon dioxide is sealed as a refrigerant, and whose high pressure side becomes supercritical pressure. The inside of the receiving room is heated by the radiator and cooled by the evaporator.
Claims12
A heating/cooling system having a receiving room capable of using hot air and cold air in a switching manner, comprising:
- a refrigerant circuit which comprises a compressor, a radiator, a pressure reducing device, and an evaporator, in which carbon dioxide is sealed as a refrigerant, and whose high pressure side becomes supercritical pressure,
- wherein the inside of the receiving room is heated by the radiator and cooled by the evaporator, and
- wherein said radiator is separate from said evaporator.
The heating/cooling system having a receiving room capable of using hot air and cold air in a switching manner, comprising:
- a refrigerant circuit which comprises a compressor, a radiator, a pressure reducing device, and an evaporator, in which carbon dioxide is sealed as a refrigerant, and whose high pressure side becomes supercritical pressure,
- wherein the inside of the receiving room is heated by the radiator and cooled by the evaporator, and
- the refrigerant circuit further comprises a gas cooler disposed separately from the radiator to release heat from the refrigerant, an auxiliary evaporator disposed separately from the evaporator to evaporate the refrigerant, and flow path control means for controlling refrigerant circulation for the radiator, the evaporator, the gas cooler, and the auxiliary evaporator.
A heating/cooling system having a receiving room capable of using hot air and cold air in a switching manner, comprising:
- a refrigerant circuit which comprises a 2-stage compression type compressor having first and second compression elements, a radiator, a pressure reducing device, and an evaporator, in which carbon dioxide is sealed as a refrigerant, and whose high pressure side becomes supercritical pressure,
- wherein the inside of the receiving room is heated by the radiator and cooled by the evaporator, an intermediate cooling circuit is provided to cool a refrigerant compressed by the first compression element of the compressor and to suck the refrigerant into the second compression element, and
- when the inside of the receiving room is heated by the radiator, the cooling of the refrigerant by the intermediate cooling circuit is made substantially invalid.
A heating/cooling system having a receiving room capable of using hot air and cold air in a switching manner, comprising:
- a refrigerant circuit which comprises a 2-stage compression type compressor having first and second compression elements, a gas cooler, a pressure reducing device, and an evaporator, in which carbon dioxide is sealed as a refrigerant, and whose high pressure side becomes supercritical pressure, and an intermediate cooling circuit which comprises a heat exchanger to cool a refrigerant compressed by the first compression element of the compressor and then to suck the refrigerant into the second compression element, wherein the inside of the receiving room is heated by heat releasing from the heat exchanger and cooled by the evaporator.
Dependencies are inferred from the claim text.