Refrigeration – Disparate apparatus utilized as heat source or absorber – With vapor compression system
Patent
1994-11-22
1995-12-12
Tapolcai, William E.
Refrigeration
Disparate apparatus utilized as heat source or absorber
With vapor compression system
623241, F25B 2700
Patent
active
054739071
ABSTRACT:
An improved heat pump having supplementary electric heat and a bypass feature protecting the outside coil from icing. The heat pump operates conventionally during space cooling. When employed for heating purposes, operation is conventional above the critical ambient temperature below which the heat pump is ineffective. Below this critical ambient temperature, an electric heater heats refrigerant which then proceeds through a conventional vapor compression and heat exchange cycle. However, frigid gaseous refrigerant coming from the indoor coil then bypasses the outdoor coil, and is conducted directly to the heater. Valves isolate the bypass when it is not in use. The bypass prevents the outdoor coil from icing, so that no energy need be expended for de-icing. It also enables rapid switching from supplementary to air based heat source operation, when weather conditions fluctuate. The heater preferably comprises a heating element which threads into a liquid chamber formed in the heater body. The liquid chamber absorbs heat and passes the heat to a refrigerant chamber formed in the heater body. The heating element may be renewed without interrupting the pressurized refrigerant circuit. The resultant heat pump is independent of combustion based supplementary heating, and is sufficiently compact to be provided as a window unit.
REFERENCES:
patent: 3563304 (1971-02-01), McGrath
patent: 3589437 (1971-06-01), Shoji et al.
patent: 3768274 (1973-10-01), Fink
patent: 4037649 (1977-07-01), Hartka
patent: 4106308 (1978-08-01), Miller
patent: 4257239 (1981-03-01), Partin et al.
patent: 4528822 (1985-07-01), Glamm
patent: 4646537 (1987-03-01), Crawford
patent: 4856578 (1989-08-01), McCahill
patent: 4918933 (1990-04-01), Dyer
patent: 5211023 (1993-05-01), Matsuura
patent: 5291941 (1994-03-01), Enomoto et al.
patent: 5305614 (1994-04-01), Gilles
patent: 5323844 (1994-06-01), Sumitani et al.
patent: 5327743 (1994-07-01), Coltrin
Litman Richard C.
Tapolcai William E.
LandOfFree
Heat pump with supplementary heat does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Heat pump with supplementary heat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heat pump with supplementary heat will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1353397