Heat exchange – With alarm – indicator – signal – register – recorder – test or... – Remotely controlled inspection means
Patent
1992-01-15
1993-11-16
Ford, John K.
Heat exchange
With alarm, indicator, signal, register, recorder, test or...
Remotely controlled inspection means
165 22, 165 27, 165 50, 236 1C, 236 37, 236 91F, 62158, F25B 2900
Patent
active
052614832
ABSTRACT:
A control system for a fan coil of an air-conditioner having a fan for heat exchange, and a coil unit through which cool or hot water circulates to cool or heat the room by heat exchange with the room air, wherein an automatic change is carried out between a cooling operation and a heating operation, referring to the temperature of distributed cool or hot water detected by a water temperature sensor, and a room temperature is controlled by opening or closing an electromagnetic valve disposed in a water distribution system, referring to a room temperature detected by a room temperature sensor. When the system is turned on from its inoperative state, the electromagnetic valve is forcibly opened for a predetermined period of time for the control system for a fan coil to sufficiently detect the temperature of cool or hot water, and to prevent an erroneous change of operation.
REFERENCES:
patent: 3166120 (1965-01-01), Butterfield et al.
patent: 3351128 (1967-11-01), Barnd
patent: 3425485 (1969-02-01), Newton
patent: 3537272 (1970-11-01), Hales et al.
patent: 4909308 (1990-03-01), Dreibelbis et al.
Ford John K.
Kabushiki Kaisha Toyo Techno Corp.
Morrison Thomas R.
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