Air-conditioning apparatus including an indoor unit and an outdo

Details Air-conditioning apparatus including an indoor unit and an outdo Air-conditioning apparatus including an indoor unit and an outdo

1990-12-31

1991-11-05

Tanner, Harry B.

Refrigeration

Automatic control

Refrigeration producer

62126, 361 22, 361 85, F25B 4902, H02H 700

Patent

active

050622781

ABSTRACT:
An air-conditioning apparatus includes a control circuit adapted to detect, from among first to third line voltages of a three-phase AC power supply, the second or third line voltage not synchronizing with a serial signal. The control circuit detects a difference between a phase angle of the detected line voltage and that of the serial signal, compares the difference with set values and determines, by that comparison, whether the three-phase AC power supply is in a positive-phase sequence or in a negative-phase sequence. The operation of a compressor is inhibited when the negative-phase sequence is determined by the control circuit.

REFERENCES:
patent: 3611050 (1971-10-01), Weber
patent: 4393430 (1983-07-01), Hughes
patent: 4557114 (1985-12-01), Kato et al.
patent: 4802053 (1989-01-01), Wojtak et al.
patent: 4823226 (1989-04-01), Reed et al.
patent: 4968338 (1990-11-01), Sugiyama

Affiliated with

Also associated with

Rating

Air-conditioning apparatus including an indoor unit and an outdo does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Air-conditioning apparatus including an indoor unit and an outdo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Air-conditioning apparatus including an indoor unit and an outdo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-492167