Refrigeration – Automatic control – Selective heating or cooling
Patent
1994-06-29
1995-10-31
Tanner, Harry B.
Refrigeration
Automatic control
Selective heating or cooling
621964, 62200, 622387, 62260, 237 2B, F25B 2702
Patent
active
054618762
ABSTRACT:
An improved combined ambient-air and earth exchange heat pump system includes a subterranean heat exchanger and an ambient-air heat exchanger, both refrigerant-based, which are adapted to be selectively operated individually, serially or in parallel for heating and cooling purposes. The system also includes a compressor, a dynamic load heat exchanger, a reversing valve for converting the system from heating to cooling and vice versa, storage for excess refrigerant including an accumulator, an optional preheat exchanger, a regulating assembly with bleed port arrangement, a bypass mechanism for repetitive start-up attempts, and a lost charge device. A control center is provided to automatically activate the ambient-air heat exchanger to assist the subterranean heat exchanger after thermal stressing about the latter, to automatically deactivate the ambient-air heat exchanger for ambient conditions below a preset temperature, to increase or decrease the number of tubes used by the subterranean heat exchanger, and to optionally maintain the flow of refrigerant through the subterranean heat exchanger in the same direction during both the heating mode and the cooling mode.
REFERENCES:
patent: 3782132 (1974-01-01), Lohoff
patent: 4042012 (1977-08-01), Perry et al.
patent: 4065938 (1978-01-01), Jonsson
patent: 4091636 (1978-05-01), Margen
patent: 4143642 (1979-03-01), Beaulieu
patent: 4165036 (1979-08-01), Meckler
patent: 4179894 (1979-12-01), Hughes
patent: 4299277 (1981-11-01), McGregor
patent: 4305260 (1981-12-01), Backlund
patent: 4383419 (1983-05-01), Bottum
patent: 4388966 (1983-06-01), Spiegel
patent: 4409796 (1983-10-01), Fisher
patent: 4423602 (1984-01-01), Venable
patent: 4493193 (1985-01-01), Fisher
patent: 4553401 (1985-11-01), Fisher
patent: 4646538 (1987-03-01), Blackshaw et al.
patent: 4688717 (1987-08-01), Jungwirth
patent: 4893476 (1990-01-01), Bos et al.
patent: 4920757 (1990-05-01), Gazes et al.
patent: 5025634 (1991-06-01), Dressler
patent: 5038580 (1991-08-01), Hart
patent: 5224357 (1993-07-01), Galiyano et al.
patent: 5239838 (1993-08-01), Tressler
patent: 5244037 (1993-09-01), Warnke
patent: 5388419 (1995-02-01), Kaye
LandOfFree
Combined ambient-air and earth exchange heat pump 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 Combined ambient-air and earth exchange heat pump system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Combined ambient-air and earth exchange heat pump system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1765359