[특허]Constant temperature maintaining refrigeration system using proportional flow throttling valve and controlled bypass loo

[미국특허] Constant temperature maintaining refrigeration system using proportional flow throttling valve and controlled bypass loo 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F25B-041/04
출원번호	US-0840847 (1986-03-18)
발명자 / 주소	Lowes Albert R. (Auburn CA)
출원인 / 주소	Mydax, Inc. (Auburn CA 02)
인용정보	피인용 횟수 : 23 인용 특허 : 0

초록 ▼

A vapor-compression refrigeration system has a continuously operating compressor, with loading on the compressor varied in accordance with conditions and cooling needs. The system avoids any on/off cycling of the compressor or valves in the system, but instead keeps cooling and bypass valves open to varying and proportional degrees depending upon requirements. The system includes several bypass loops, for bypassing coolant fluid to a proportional degree when a desired temperature is approached in a body to be cooled; and when temperature of return gas to the compressor approaches a limit temperature beyond which the compressor should not operate. In the latter case, cool liquid is injected, while expanding and vaporizing, into the hot gas for cooling, to protect the compressor. The system operates in a very hot environment to effect the maximum cooling possible without exceeding the limits of the compressor, by reducing the refrigerant flow to the evaporator to continue operating at reduced load, reducing more and more of the cooling flow as the desired set point temperature is approached and controlling bypass flow to maintain evaporator pressure or temperature. Proportional flow valves used in the system enjoy long life due to the absence of stressful on/off cycling.

대표청구항 ▼

A vapor-compression refrigeration system utilizing a liquid-gas refrigerant in a closed flow loop for maintaining a substantially constant set point temperature in a body of fluid to be cooled and having a continuously-operating compressor, a condenser downstream of the compressor in a main loop for cooling compressed gas refrigerant, and an evaporator in a first branch of the main loop, for transferring heat from the fluid to be cooled to the refrigerant, the system including a first, smoothly variable, analog refrigerant flow controllable throttling valve in the first branch immediately upstream from the evaporator, a second branch of the main loop bypassing said first throttling valve in said first branch and including a second, smoothly variable, analog refrigerant flow controllable throttling valve, and electrical control means, including first temperature sensor means for sensing temperature of the refrigerant immediately downstream of said first throttling valve, second temperature sensor means for sensing temperature of the body of fluid to be cooled and input means for receiving said set point temperatures for the fluid, said electrical control means for scanning the first and second temperature sensor means and the input means for generating a control value for each said throttling valve for modulating the flow rate of refrigerant through each said throttling valve in response to difference between set point temperature and sensed fluid temperature in a manner which enables said compressor to remain in continuous operation.

이 특허를 인용한 특허 (23) 인용/피인용 타임라인 분석

Miles, Donald R., Adaptive auxiliary condensing device and method.
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Takano, Yoshiaki; Izawa, Satoshi; Kurata, Shun, Air conditioner.
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Launois Jean-Francois,BEX ; Engel Thomas O.,DEX ; Bugeja Pierre,LUX ; Dulin Jean-Jacques,FRX, Air conditioning system for a motor vehicle.
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Zeigler, Terry A.; Bracey, John S.; Connell, Brett Sean; Sloan, Scott, Combined heating and air conditioning system for vehicles.
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Diab Tariq A. R. (Anna OH), Compressor system with demand cooling.
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Scarpinato, Paul A., Compressor with flow control sensor.
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Dage, Gary A.; Lambert, Steven L., Coolest A/C discharge temperature for all operating conditions.
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Abtar Singh ; Jim Chabucos ; Paul Wickberg ; John Wallace, Method and apparatus for refrigeration system control having electronic evaporator pressure regulators.
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Abtar Singh ; Jim Chabucos ; Paul Wickberg ; John Wallace, Method and apparatus for refrigeration system control having electronic evaporator pressure regulators.
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Singh, Abtar; Chabucos, Jim; Wickberg, Paul; Wallace, John, Method and apparatus for refrigeration system control having electronic evaporator pressure regulators.
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Singh, Abtar; Chabucos, Jim; Wickberg, Paul; Wallace, John, Method and apparatus for refrigeration system control having electronic evaporator pressure regulators.
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Singh,Abtar; Chabucos,Jim; Wickberg,Paul; Wallace,John, Method and apparatus for refrigeration system control having electronic evaporator pressure regulators.
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Singh,Abtar; Chabucos,Jim; Wickberg,Paul; Wallace,John G, Method and apparatus for refrigeration system control having electronic evaporator pressure regulators.
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Girbig, Paul; Willsch, Michael, Method and regulation system for monitoring a compressor of a gas turbine in particular.
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Brillhart, Paul Lukas; Fovell, Richard; Buchberger, Jr., Douglas A.; Burns, Douglas H.; Bera, Kallol; Hoffman, Daniel J.; Cowans, Kenneth W.; Cowans, William W.; Zubillaga, Glenn W.; Millan, Isaac, Method of cooling a wafer support at a uniform temperature in a capacitively coupled plasma reactor.
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Hanson Jay L. (Bloomington MN), Refrigeration system having a modulation valve which also performs function of compressor throttling valve.
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Müller, Klaus Georg Matthias; Marx, Jürgen; Schaschek, Karl Erich Albert; Schneider, Georg, Systems for tempering components of a printing machine.
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Garner Steve M. (Arlington TX) Hess Max W. (N. Richland Hills TX), Temperature controlled system for printing press.
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Cowans, Kenneth W.; Cowans, William W.; Zubillaga, Glenn W.; Millan, Isaac, Thermal control system and method.
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Cowans,Kenneth W.; Cowans,William W.; Zubillaga,Glenn W.; Millan,Isaac, Thermal control system and method.
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Cowans,Kenneth W.; Cowans,William W.; Zubillaga,Glenn W.; Millan,Isaac, Thermal control system and method.
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Berge Jeffrey B. (Bloomington MN) Seshadri Jayaram (Minneapolis MN) Hanson Jay L. (Bloomington MN), Transport refrigeration system with improved temperature and humidity control.
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Renken, David; Kirby, Eric; Schlough, Michael; Shaw, John J., Transport temperature control system having an increased heating capacity and a method of providing the same.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Constant temperature maintaining refrigeration system using proportional flow throttling valve and controlled bypass loo 원문보기