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특허 상세정보

Air-to-air heat pump defrost bypass loop

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) G05D-023/00    F25D-021/06   
미국특허분류(USC) 165/299; 165/267; 165/291; 062/151; 062/155; 062/324.5
출원번호 US-0180142 (2002-06-26)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    McNees Wallace &
인용정보 피인용 횟수 : 7  인용 특허 : 35
초록

An improvement in defrosting an air-to-air heat pump system when in the heating mode. A bypass loop transfers refrigerant at a higher temperature and pressure than is normally cycled through the outdoor unit to an outdoor coil to defrost ice on the outdoor coil, The bypass loop includes a valve movable between closed and open positions. A sensor monitors a preselected condition indicative of outdoor coil performance. A controller communicates with the valve and the sensor. Once the controller determines that a preselected set point of a preselected cond...

대표
청구항

What is claimed is: 1. A heat pump being reversible between a heating cycle and a cooling cycle, comprising: a compressor; an indoor coil; an outdoor coil; an expansion means between the indoor coil and the outdoor coil, the expansion means being in fluid communication with the indoor coil and the outdoor coil for allowing flow of the refrigerant fluid between the indoor coil and the outdoor coil; a sensor for detecting a condition of the outdoor coil and providing a signal indicative of the condition of the outdoor coil; a controller including a prede...

이 특허에 인용된 특허 (35)

  1. Sulfstede Louis E. (Tyler TX) Bergt Carl (Tyler TX) Helt Robert W. (Tyler TX). Adaptive defrost control for heat pump system. USP1986034573326.
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  3. Utsumi Takashi,JPX. Air conditioner control method and apparatus of the same. USP2000016012294.
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  30. Dinh Khanh (Alachua FL). Passive defrost system using waste heat. USP1993125269151.
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