Refrigeration – Automatic control – Withdrawing or adding refrigerant from or to normally closed...
Patent
1993-02-17
1994-06-28
Tanner, Harry B.
Refrigeration
Automatic control
Withdrawing or adding refrigerant from or to normally closed...
62174, 62175, 621963, 62199, 62201, 622386, 62430, 165902, F25B 700
Patent
active
053236181
ABSTRACT:
A heat storage type air conditioning system capable of performing refrigerant receiving and discharging control and oil quantity control, which, in operating the general cooling circuit and the cold radiating circuit simultaneously or separately, is free from difficulties that the compressor is damaged or the cooling capacity is lowered when the quantities of refrigerant in those circuits are excessively increased or decreased, and is able to continue the operations with the quantity of refrigerant and the quantity of ice machine oil adjusted to suitable values. In the heat storage type air conditioning system, evaporators are provided in a general cooling circuit driven by a compressor and in a cold radiating circuit driven by a refrigerant gas pump, respectively, so that those circuits operate independently of each other. Furthermore, bypass circuits are provided to allow refrigerant to flow between liquid pipes and between gas pipes in those circuits. In a cold storing operation, the bypass circuits are closed, so that a cold storing circuit is formed by the compressor, a condenser, a first pressure reducing mechanism, and a cold storing heat exchanger.
REFERENCES:
patent: 4149389 (1979-04-01), Hayes et al.
patent: 4608836 (1986-09-01), MacCracken et al.
Hama Hiroaki
Imanishi Masami
Miyamoto Moriya
Morimoto Osamu
Nakata Hiroshi
Mitsubishi Denki & Kabushiki Kaisha
Tanner Harry B.
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