Method and apparatus for eliminating unnecessary defrost cycles

Details Method and apparatus for eliminating unnecessary defrost cycles Method and apparatus for eliminating unnecessary defrost cycles

1999-09-07

2000-11-07

Tanner, Harry B.

Refrigeration

Automatic control

Preventing, removing or handling atmospheric condensate

62156, 62186, 62DIG17, F25D 2106

Patent

active

061419788

ABSTRACT:
An improved method and apparatus for limiting the pressure in the high pressure side of a heat pump system to a safe value, without causing the defrost control circuitry thereof to initiate unnecessary defrost cycles. When the heat pump system is operating in its heating mode, pressure limiting circuitry limits the pressure in the high side thereof to a safe value by turning the outdoor fan off, and holding it off, when the vapor pressure in the vapor containing parts of the system is equal to or greater than a preset threshold pressure. When ambient conditions are such that frost is able to form on the outdoor coil, the activity of the pressure limiting circuitry is used to reset the defrost delay time or otherwise inhibit the operation of the defrost control circuitry.

REFERENCES:
patent: 4406133 (1983-09-01), Saunders et al.
patent: 5775116 (1998-07-01), Matsumoto et al.
patent: 5782101 (1998-07-01), Dennis
patent: 5870899 (1999-02-01), Choi

Affiliated with

Also associated with

Rating

Method and apparatus for eliminating unnecessary defrost cycles does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for eliminating unnecessary defrost cycles , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for eliminating unnecessary defrost cycles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1630303