Automatic temperature and humidity regulation – Ventilator type – Electrically actuated
Patent
1990-09-13
1992-08-18
Wayner, William E.
Automatic temperature and humidity regulation
Ventilator type
Electrically actuated
236 94, F24F 700
Patent
active
051391970
ABSTRACT:
In an air conditioning system of the type having air volume to each room controlled by individual dampers the improvement comprising a damper control unit for, on a trial mode, gradually changing the opening angle of each damper while the other dampers are kept fully closed; air volume measurement unit for detecting the air volume from a blower to measure the actual air volume; pressure difference measurement unit for detecting a difference in pressure between the outlet air and the inlet air of an indoor heat exchanger unit to measure an air feeding pressure difference with respect to an actual duct system; air volume calculation unit for finding the relationship among the air volume passing through the respective dampers, the opening angles of the respective dampers and the air feeding pressure difference, based on outputs from the pressure difference measurement unit, the air volume measurement unit and the damper control unit, to find air feeding resistance in the respective ducts.
REFERENCES:
patent: 4406397 (1983-09-01), Kamata et al.
patent: 4821526 (1989-04-01), Otsuka et al
patent: 4948040 (1990-08-01), Kobayashi et al.
Recknagel, Sprenger, Honmann: Tashchenbuch fur Heizung and Klimatechnik 1986/1987, p. 898 (article).
Igarashi Hideo
Okada Tetsuji
Seshimo Yu
Mitsubishi Denki & Kabushiki Kaisha
Wayner William E.
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