[특허]Refrigerant vapor compression system operation

Refrigerant vapor compression system operation 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F25B-049/02 F25B-041/04 F25B-001/00 F25B-001/10 B60H-001/32 F25B-049/00 F25B-009/00 F25B-045/00 F25B-031/00
출원번호	US-0499927 (2010-10-11)
등록번호	US-10088202 (2018-10-02)
국제출원번호	PCT/US2010/052144 (2010-10-11)
§371/§102 date	20120403 (20120403)
국제공개번호	WO2011/049767 (2011-04-28)
발명자 / 주소	Huff, Hans-Joachim Liu, Lucy Yi Duraisamy, Suresh Asprovski, Zvonko Rogers, Mark S. Lee, KeonWoo
출원인 / 주소	CARRIER CORPORATION
대리인 / 주소	Cantor Colburn LLP
인용정보	피인용 횟수 : 0 인용 특허 : 33

초록 ▼

A method is provided for protecting a refrigerant vapor compression system during a standstill period following shutdown of the refrigerant vapor compression system. A method is provided for detecting a low refrigerant charge level in a refrigerant vapor compression system operating in a transcritical mode. A refrigerant vapor compression system is provided that includes a controller operative to perform a refrigerant charge detection method.

대표청구항 ▼

1. A method for protecting a refrigerant vapor compression system during a standstill period following shutdown of the refrigerant vapor compression system, the refrigerant vapor compression system including a primary refrigerant circuit including a refrigerant compression device, a refrigerant heat rejection heat exchanger downstream of said compression device, a refrigerant heat absorption heat exchanger downstream of said refrigerant heat rejection heat exchanger, and a primary expansion device disposed in the refrigerant circuit downstream of said refrigerant heat rejection heat exchanger and upstream of said refrigerant heat absorption heat exchanger, an outlet of the primary expansion device being connected directly to an inlet of the refrigerant heat absorption heat exchanger; said primary refrigerant circuit having a high-pressure side upstream with respect to refrigerant flow of the primary expansion device and a low-pressure side downstream with respect to refrigerant flow of the primary expansion device and upstream of a suction inlet of the compression device; said method comprising: whenever during standstill a refrigerant pressure within an isolated pocket on the low-pressure side of said refrigerant circuit exceeds a predetermined standstill equalization pressure limit, relieving the refrigerant pressure within said isolated pocket;wherein relieving the refrigerant pressure within said isolated pocket comprises venting the refrigerant pressure within said isolated pocket to a portion of the low-pressure side of said refrigerant circuit downstream of the refrigerant heat absorption heat exchanger and upstream of the suction inlet of the compression device, the portion having a refrigerant pressure therein less than the predetermined maximum standstill equalization pressure limit. 2. The method for protecting a refrigerant vapor compression as recited in claim 1 wherein relieving the refrigerant pressure within said isolated pocket comprises maintaining during the standstill period an open refrigerant flow path throughout the low-pressure side of said refrigerant circuit. 3. The method of claim 1 wherein the refrigerant vapor compression system further comprises a secondary expansion device downstream of the refrigerant heat rejection heat exchanger, an economizer device downstream of the secondary expansion device, the economizer device coupled to a vapor injection line coupled to an intermediate stage of the compression device, the economizer device upstream of the primary expansion device. 4. A method for protecting a refrigerant vapor compression system during a standstill period following shutdown of the refrigerant vapor compression system, the refrigerant vapor compression system including a primary refrigerant circuit including a refrigerant compression device, a refrigerant heat rejection heat exchanger downstream of said compression device, a refrigerant heat absorption heat exchanger downstream of said refrigerant heat rejection heat exchanger, and a primary expansion device disposed in the refrigerant circuit downstream of said refrigerant heat rejection heat exchanger and upstream of said refrigerant heat absorption heat exchanger, an outlet of the primary expansion device being connected directly to an inlet of the refrigerant heat absorption heat exchanger; said primary refrigerant circuit having a high-pressure side upstream with respect to refrigerant flow of the primary expansion device and a low-pressure side downstream with respect to refrigerant flow of the primary expansion device; said method comprising: whenever during standstill a refrigerant pressure within an isolated pocket on the low-pressure side of said refrigerant circuit exceeds a predetermined standstill equalization pressure limit, relieving the refrigerant pressure within said isolated pocket;wherein relieving the refrigerant pressure within said isolated pocket comprises venting the refrigerant pressure within said isolated pocket to a portion of the low-pressure side of said refrigerant circuit having a refrigerant pressure therein less than the predetermined maximum standstill equalization pressure limit;wherein relieving the refrigerant pressure within said isolated pocket comprises opening a flow control valve between said isolated pocket and the portion of the low-pressure side of said refrigerant circuit having a refrigerant pressure therein less than the predetermined maximum standstill equalization pressure limit.

이 특허에 인용된 특허 (33)

Blackmon William S. (Charlotte NC) Blackmon John G. (Charlotte NC), Apparatus and method for purging a refrigeration system.
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Lifson,Alexander, Compressor.
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Prenger Werner H. (Coldwater OH) Seibel Stephen M. (Sidney OH), Compressor with liquid injection.
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Lifson, Alexander, Compressor with unloader valve between economizer line and evaporator inlet.
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Cahill-O\Brien Barry P. (Syracuse NY) Nevin Michael W. (Syracuse NY) Martin Richard L. (Cicero NY), Controlled atmosphere system for a refrigerated container.
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Concha,Julio I.; Braun,Robert J.; Gopalnarayanan,Sivakumar; Schuster,Don A.; Das,Sathish R., Detection of refrigerant charge adequacy based on multiple temperature measurements.
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Lifson,Alexander; Taras,Michael F., Diagnosing a loss of refrigerant charge in a refrigerant system.
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Kolk, Richard A.; Archacki, Jr., Raymond J., Energy consumption estimation using real time pricing information.
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Hughes Gregory G. (Milwaukee WI), Evaporator for a refrigerant.
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Collings,Douglas A., Expansion device arrangement for vapor compression system.
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Geary David F. (Fayetteville NY), Heat reclaiming method and apparatus.
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Lorentzen Gustav (Trondheim NOX) Pettersen Jostein (Trondheim NOX) Bang Roar R. (Trondheim NOX), Method and device for high side pressure regulation in transcritical vapor compression cycle.
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Hanson Jay L. (Bloomington MN) Howland Leland L. (Belle Plaine MN), Method of operating a transport refrigeration unit.
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Hanson Jay L. (Bloomington MN) Howland Leland L. (Belle Plaine MN), Method of operating a transport refrigeration unit.
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Mei, Viung C.; Chen, Fang C.; Kweller, Esher, Non-intrusive refrigerant charge indicator.
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Cahill-O\Brien Barry P. (Syracuse NY) Nevin Michael W. (Syracuse NY) Sullivan Dennis W. (Elbridge NY), Pre-trip system for a controlled atmosphere system for a refrigerated container.
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Porter Kevin J. ; Kopp Peter H. ; Malone Garret J. ; Rabbia Mark B. ; Dobmeier Thomas J., Pretrip routine comprising of individual refrigeration system components.
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Kobayashi Hisao (Kariya JPX), Refrigerant compressor protecting device.
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Albertson Luther D. (3834 Carver St. New Albany IN 47150) Key Walter R. (6362 Minlo Dr. Indianapolis IN 46227) Key Mark B. (526A Paradise Way West Greenwood IN 46143), Refrigerant evaporator over-pressure relief system including a fluid containment vessel.
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Takeo Komatsubara JP; Yasuki Takahashi JP; Toshiyuki Ebara JP; Miyuki Kawamura JP, Refrigerating device utilizing carbon dioxide as a refrigerant.
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Takegami,Masaaki; Tanimoto,Kenji; Ueno,Takeo; Kajimoto,Akihiro, Refrigeration apparatus.
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Lifson, Alexander, Screw compressor having compression pockets closed for unequal durations.
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Lifson Alexander ; Bush James W., Scroll compressor with unloader valve between economizer and suction.
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Williams Donald C. ; Dorn Daniel, Self-contained refrigeration system and a method of high temperature operation thereof.
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Porter Kevin J. ; Malone Garret J. ; Dobmeier Thomas J. ; Kopp Peter H. ; Rabbia Mark R., Test for the automated detection of leaks between high and low pressure sides of a refrigeration system.
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Weber Richard (Prosper TX) Price Donald C. (Dallas TX), Thermal control system.
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Tyree ; Jr. Lewis, Versatile low temperature liquid CO.sub.2 ground support system.
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Flynn,Kevin P.; Podtcherniaev,Oleg, Very low temperature refrigeration system having a scroll compressor with liquid injection.
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