Refrigeration – Automatic control – Of external fluid or means
Patent
1990-03-28
1991-06-25
Wayner, William E.
Refrigeration
Automatic control
Of external fluid or means
62227, 236 493, F25D 1700
Patent
active
050256386
ABSTRACT:
A refrigeration cycle is a closed cycle constituted by a variable power compressor, a four-way valve, an indoor heat exchanger, an expansion valve and an outdoor heat exchanger. Air-conditioned air is supplied from the refrigeration cycle to a plurality of rooms to be subjected to air conditioning through a supply duct at a portion near a supply opening for supplying the air-conditioned air to a corresponding one of the rooms and controls a flow amount of the air-conditioned air supplied from the supply opening. Air is returned from each room to the refrigeration cycle through a return duct. The indoor heat exchanger of the refrigeration cycle has a temperature sensor for detecting the temperature of the indoor heat exchanger. A system controller controls a drive frequency of the variable power compressor of the refrigeration cycle in accordance with a difference between the temperature of the indoor heat exchanger detected by the temperature sensor and a preset temperature of the indoor heat exchanger.
REFERENCES:
patent: 4821526 (1989-04-01), Otsuka et al.
patent: 4850200 (1989-07-01), Sugiyama
Matsui Koichi
Matsui Nobuo
Mino Yoshihito
Suma Sei
Tanaka Toshimasa
Kabushiki Kaisha Toshiba
Wayner William E.
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