Control apparatus for multi-air-conditioner

Details Control apparatus for multi-air-conditioner Control apparatus for multi-air-conditioner

1996-02-28

1997-07-01

Tanner, Harry B.

Automatic temperature and humidity regulation

Distance-adjusted

62175, F24F 1102

Patent

active

056428570

ABSTRACT:
A control apparatus for a multi-air-conditioner having an external unit and a plurality of internal units includes a DC electric power supply. An external transmitting/receiving circuit is provided with the external unit and is connected with the DC electric power supply, and a plurality of internal transmitting/receiving circuits are provided with the plurality of internal units and are connected serially with the external transmitting/receiving circuit via a signal line. A DC voltage is supplied for transmitting data from the external unit to the internal unit, which reduces a leakage distance of the circuit. A timing for transmitting data can be set freely, a transmitting speed of data can be improved using a high-speed photo-coupler, and thus an operation speed of the internal unit can be improved in the multi-air-conditioner having the plurality of internal units.

REFERENCES:
patent: 5263335 (1993-11-01), Isono et al.
patent: 5383336 (1995-01-01), Nishida et al.
patent: 5390506 (1995-02-01), Sogabe et al.
patent: 5435147 (1995-07-01), Mochizuki et al.
patent: 5499510 (1996-03-01), Yoshida et al.
patent: 5522230 (1996-06-01), Shima et al.

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