[특허]Heat pump apparatus and related methods providing enhanced refrigerant flow control

[미국특허] Heat pump apparatus and related methods providing enhanced refrigerant flow control 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F25B-005/00 F25D-023/12
출원번호	US-0554583 (1995-11-06)
발명자 / 주소	Cochran Robert W.
출원인 / 주소	ECR Technologies, Inc.
대리인 / 주소	Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A.
인용정보	피인용 횟수 : 44 인용 특허 : 6

초록 ▼

A heat pump apparatus includes a start assist valve for permitting refrigerant to flow from an outlet of a condenser to an inlet of an evaporator during start-up of the heat pump apparatus. The heat pump apparatus preferably includes an expansion orifice connected in fluid communication between the outlet of the condenser and the inlet of the evaporator. The start assist valve provides a bypass for refrigerant flow around the expansion orifice during start-up of the heat pump apparatus. The apparatus also preferably includes a series of check valves cooperating with the start assist valve so that the start assist valve is operable only when the heat pump apparatus is in the cooling mode. The invention is particularly applicable to a direct expansion heat pump apparatus where one or more earth tap heat exchangers serve as the condenser when operating in the cooling mode. The apparatus preferably further includes a vapor refrigerant bleed connected in fluid communication with an expansion valve for bleeding vapor therefrom. The vapor bleeding causes the expansion valve to pass a greater amount of liquid refrigerant to thereby reduce liquid refrigerant in the condenser. Method aspects of the invention are also disclosed.

대표청구항 ▼

[ That which is claimed is:] [1.] A heat pump apparatus comprising:a condenser, an evaporator, and a compressor for circulating refrigerant through said condenser and said evaporator;expansion means connected in fluid communication between an outlet of said condenser and an inlet of said evaporator for restricting liquid refrigerant flow from said condenser to said evaporator; andstart assist valve means movable between open and closed positions for permitting liquid refrigerant to flow from the outlet of said condenser to the inlet of said evaporator during start-up of the heat pump apparatus to thereby provide a bypass for liquid refrigerant flow around said expansion means during start-up of the heat pump apparatus.

이 특허에 인용된 특허 (6) 인용/피인용 타임라인 분석

Cochran Robert (Lakeland FL), Fluid flow control system.
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Gazes Jimmy (803 O\Sullivan Dr. Mt. Pleasant SC 29464) Mixson Dewey (1117 Dickson Ave. Hanahan SC 29406), Geothermal heating and air conditioning system.
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Wolf Herman B. (Rte. 1 ; Box 99-P Pineville NC 28134), Geothermal heating and cooling system.
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Voigt Carl A. (120 E. Dakota St. Nampa ID 83651), Refrigeration system.
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Van Steenburgh ; Jr. Leon C. (1900 South Quince Denver CO 80231), Refrigeration system with bypass valves.
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Van Steenburgh ; Jr. Leon R. (1900 S. Quince St. ; Unit G Denver CO 80231), Refrigeration system with bypass valves.
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이 특허를 인용한 특허 (44) 인용/피인용 타임라인 분석

Wiggs, B. Ryland, Advanced DX system design improvements.
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Wiggs,B. Ryland, Alternate sub-surface and optionally accessible direct expansion refrigerant flow regulating device.
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Hart, Katherine; Held, Timothy James, Automated mass management control.
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Hart, Katherine; Held, Timothy James, Automated mass management control.
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Held, Timothy James; Vermeersch, Michael Louis; Xie, Tao, Carbon dioxide refrigeration cycle.
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Schutte, Daniel J.; Raven, Matthew; Dolcich, Benedict J.; Lin, Zhiyong, Cooling system having a condenser with a micro-channel cooling coil and sub-cooler having a fin-and-tube heat cooling coil.
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Wiggs, B. Ryland, DX system having heat to cool valve.
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Wiggs, B. Ryland, DX system interior heat exchanger defrost design for heat to cool mode.
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Wiggs, B. Ryland, Deep well direct expansion heating and cooling system.
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Wiggs, B. Ryland, Deep well/long trench direct expansion heating/cooling system.
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Wiggs, B. Ryland, Direct exchange geothermal heating/cooling system sub-surface tubing installation with supplemental sub-surface tubing configuration.
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Wiggs, B. Ryland, Direct exchange heating/cooling system.
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Held, Timothy James; Vermeersch, Michael Louis; Xie, Tao, Driven starter pump and start sequence.
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Held, Timothy James; Vermeersch, Michael; Xie, Tao, Driven starter pump and start sequence.
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Wiggs, B. Ryland, Encasement assembly for installation of sub-surface refrigerant tubing in a direct exchange heating/cooling system.
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Wiggs, B. Ryland, Frequent short-cycle zero peak heat pump defroster.
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Wiggs,B. Ryland, Geothermal heating and cooling system with solar heating.
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Held, Timothy J.; Miller, Jason D., Heat engine and heat to electricity systems and methods for working fluid fill system.
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Held, Timothy J.; Hostler, Stephen; Miller, Jason D.; Vermeersch, Michael; Xie, Tao, Heat engine and heat to electricity systems and methods with working fluid mass management control.
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Held, Timothy James; Hostler, Stephen; Miller, Jason D.; Vermeersch, Michael; Xie, Tao, Heat engine and heat to electricity systems and methods with working fluid mass management control.
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Held, Timothy James, Heat engine cycles for high ambient conditions.
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Kacludis, Alexander Steven; Hostler, Stephen R.; Zakem, Steve B., Heat engine system with a supercritical working fluid and processes thereof.
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Held, Timothy James, Heat engines with cascade cycles.
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Wiggs,B. Ryland, Heat pump dehumidification system.
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Gurin, Michael H., Heat pump with integral solar collector.
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Wiggs, B. Ryland, Heat pump/direct expansion heat pump heating, cooling, and dehumidification system.
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Wiggs,B. Ryland, Horizontal and vertical direct exchange heating/cooling system sub-surface tubing installation means.
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Held, Timothy James, Hot day cycle.
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Gurin, Michael H., Hybrid power systems.
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Vermeersch, Michael Louis; Bowan, Brett A.; Khairnar, Swapnil, Methods for reducing wear on components of a heat engine system at startup.
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Wiggs, B. Ryland, Multi-faceted designs for a direct exchange geothermal heating/cooling system.
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Wiggs, B. Ryland, Oil return for a direct exchange geothermal heat pump.
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Bowan, Brett A., Process for controlling a power turbine throttle valve during a supercritical carbon dioxide rankine cycle.
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Wiggs, B. Ryland, Sealed well direct expansion heating and cooling system.
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Okaza, Noriho; Nakatani, Kazuo; Mekata, Masato, Start-up control method for refrigeration cycle apparatus and refrigeration cycle control apparatus using the same.
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Wiggs, B. Ryland, Sub-surface and optionally accessible direct expansion refrigerant flow regulating device.
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Wiggs, B. Ryland, Sub-surface tubing spacer means for direct expansion heating/cooling systems.
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Xie, Tao; Vermeersch, Michael; Held, Timothy, Supercritical carbon dioxide power cycle for waste heat recovery.
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Vermeersch, Michael Louis, Supercritical working fluid circuit with a turbo pump and a start pump in series configuration.
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Held, Timothy James, System and method for managing thermal issues in gas turbine engines.
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Held, Timothy James, System and method for managing thermal issues in one or more industrial processes.
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Held, Timothy J.; Hostler, Stephen; Miller, Jason D.; Hume, Brian F., Thermal energy conversion device.
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Held, Timothy J.; Hostler, Stephen; Miller, Jason D.; Hume, Brian F., Thermal energy conversion method.
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Wiggs,B. Ryland, Vertically oriented direct exchange/geothermal heating/cooling system sub-surface tubing installation means.
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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] Heat pump apparatus and related methods providing enhanced refrigerant flow control 원문보기