Heat exchange – Movable heating or cooling surface – Rotary drum
Patent
1976-07-06
1978-04-11
Wayner, William E.
Heat exchange
Movable heating or cooling surface
Rotary drum
236 1C, 337340, 361191, H01H 3752, F25B 2900
Patent
active
040833976
ABSTRACT:
Thermostat control of separate heating and cooling apparatus is achieved with a system that requires only a two-conductor connection between the thermostat and the apparatus. A pair of oppositely-poled diodes is employed at each end of one of the conductors of the connection so that when the control system is established, by a selector switch, in the heating mode the half cycles of one polarity of an AC voltage effect the operation of the heating apparatus, whereas when the system is switched to the cooling mode the opposite polarity half cycles cause operation of the cooling apparatus. The invention is especially advantageous when a central air-conditioning system is added to a building where only a two-wire cable connects the thermostat to the existing heating system. Rewiring of the thermostat cable is unnecessary.
REFERENCES:
patent: 2188877 (1940-01-01), Kriechbaum
patent: 2992366 (1961-07-01), Veltfort, Jr.
patent: 3193198 (1965-07-01), Carlson
patent: 3284002 (1966-11-01), Edelman et al.
Switching Tricks, Radio-Electronics, May, 1972, pp. 54 & 55.
Kimpel Francis A.
Moore Walter C.
Borg-Warner Corporation
Tracy James E.
Wayner William E.
LandOfFree
Heating-cooling control system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Heating-cooling control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heating-cooling control system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-984442