Combined regeneration heating and cooling system

Refrigeration – Reversible – i.e. – heat pump

Reexamination Certificate

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Reexamination Certificate

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06865904

ABSTRACT:
The present invention relates to a combined regeneration cooling and heating system capable of enhancing a heat exchange efficiency based on a heat exchange between a high temperature refrigerant flowing in the interior of an expansion unit and a low temperature refrigerant flowing in the outside. A compressor for compressing refrigerant to a high temperature and pressure state, an indoor unit installed in the indoor for cooling an indoor air by heat-exchanging a low temperature expanded refrigerant with an indoor air in the cooling mode and for heating an indoor air by heat-exchanging a high temperature and pressure refrigerant with an indoor air in the heating mode, an outdoor unit installed in the outdoor for discharging heat into the air by heat-exchanging a high temperature and pressure refrigerant with an external air in the cooling mode and for heating a refrigerant by heat-exchanging the expanded refrigerant with an external air in the heating mode, and a heat exchange unit in which a heat exchanger in which a high temperature refrigerant discharged from the indoor unit flows and the expansion unit adapted to receive a refrigerant of the heat exchanger and to expand the same.

REFERENCES:
patent: 4196595 (1980-04-01), Shaw
patent: 4488413 (1984-12-01), Bottum
patent: 5218844 (1993-06-01), Nishiguchi et al.
patent: 6463757 (2002-10-01), Dickson et al.
patent: 6584796 (2003-07-01), Itoh et al.
patent: 6604376 (2003-08-01), Demarco et al.
patent: 6644059 (2003-11-01), Maeda et al.
patent: 6668569 (2003-12-01), Jin
patent: 6672082 (2004-01-01), Maeda et al.
patent: 6679321 (2004-01-01), Jin
patent: 6708513 (2004-03-01), Koehler et al.
patent: 6755043 (2004-06-01), Jensen et al.
patent: 6755046 (2004-06-01), Nishida et al.
patent: 405280813 a (1993-10-01), None
patent: 406002966 (1994-01-01), None
patent: 406088649 (1994-03-01), None

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