Refrigeration – With indicator or tester – Operatively correlated with automatic control
Patent
1996-03-11
1998-01-20
Bennett, Henry A.
Refrigeration
With indicator or tester
Operatively correlated with automatic control
62225, 622284, 62502, F25B 4900
Patent
active
057090947
ABSTRACT:
An air conditioner control apparatus measures coolant temperatures and pressures at both inlet side and outlet side of a compressor, or detects a electric capacity of the coolant and the like in order to determine the kind of coolant. For example, when a CPU 31 detects that the coolant R22 is used, the apparatus selects a data item of a fluorocarbone-based coolant R22 stored in a data selection means 35 storing pressure-temperature data items, and calculates a super-heated rate or a super-cooled rate according to the ability of a compressor 1 so that the room temperature reaches the predetermined one set by the operator and setting a calculation result. Next, a vapor temperature is calculated by each indoor air conditioner side, and during a cooling operation, electronic expansion valves 9, 11 are controlled so that target super-heated temperature are reached to the temperatures in temperature sensors 17 and 19.
REFERENCES:
patent: 4499739 (1985-02-01), Matsuoka et al.
patent: 5353604 (1994-10-01), Oguni et al.
patent: 5371019 (1994-12-01), Manz et al.
Furuhama Kokichi
Komazaki Megumi
Motohashi Hideaki
Ooyabu Yasunori
Bennett Henry A.
Kabushiki Kaisha Toshiba
Tinker Susanne C.
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