Multi-range cross defrosting heat pump system and humidity...

Details Multi-range cross defrosting heat pump system and humidity... Multi-range cross defrosting heat pump system and humidity...

2005-12-20

2009-11-10

Tapolcai, William E (Department: 3744)

Refrigeration

Reversible, i.e., heat pump

C062S324600

Reexamination Certificate

active

07614249

ABSTRACT:
The present invention provides an air-condition heat pump system and two-stage defrosting control method for continuous operation under an environment temperature range from 20 degree to negative 40 degree Celsius or lower. The heat pump system employs different defrosting methods under different temperature and humidity conditions. A ventilation and humidity control system is also provided for implementing the cross defrosting heat pump system within an indoor dimension.

REFERENCES:
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patent: 3150498 (1964-09-01), Blake
patent: 4691527 (1987-09-01), Ikeda
patent: 5150582 (1992-09-01), Gotou
patent: 5228301 (1993-07-01), Sjoholm et al.
patent: 5465591 (1995-11-01), Cur et al.
patent: 6276158 (2001-08-01), Lowes et al.
patent: 7171817 (2007-02-01), Birgen
patent: 7213407 (2007-05-01), Hu

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