[특허]Ejector cycle refrigerant separator

Carrier Corporation

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Ejector cycle refrigerant separator

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F25B-001/00 F25B-041/00 F25B-040/00 F25B-043/00 F25B-001/10
미국특허분류(USC)	062/115; 062/500; 062/512
출원번호	US-0522121 (2011-07-20)
등록번호	US-8955343 (2015-02-17)
국제출원번호	PCT/US2011/044626 (2011-07-20)
§371/§102 date	20120713 (20120713)
국제공개번호	WO2012/012496 (2012-01-26)
발명자 / 주소	Verma, Parmesh Wang, Jinliang Cogswell, Frederick J. Huff, Hans-Joachim Lifson, Alexander Lord, Richard G.
출원인 / 주소	Carrier Corporation
대리인 / 주소	Bachman & LaPointe, P.C.
인용정보	피인용 횟수 : 0 인용 특허 : 7

초록

A system has a compressor. A heat rejection heat exchanger is coupled to the compressor to receive refrigerant compressed by the compressor. An ejector has a primary inlet coupled with heat rejection heat exchanger to receive refrigerant, a secondary inlet, and an outlet. The system has a heat absorption heat exchanger. The system includes means for providing at least of a 1-10% quality refrigerant to the heat absorption heat exchanger and an 85-99% quality refrigerant to at least one of the compressor and, if present, a suction line heat exchanger.

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1. A system (170; 250; 300; 350) comprising: a compressor (22);a heat rejection heat exchanger (30) coupled to the compressor to receive refrigerant compressed by the compressor;an ejector (38) having: a primary inlet (40) coupled to the heat rejection heat exchanger to receive refrigerant;a secondary inlet (42); andan outlet (44);a heat absorption heat exchanger (64); andmeans (180) for providing a 1-10% quality refrigerant to the heat absorption heat exchanger. 2. The system of claim 1 wherein the means comprises: an inlet (184) coupled to the outlet of the ejector;a first outlet (186) coupled to said at least one of the compressor and suction line heat exchanger; anda second outlet (188) coupled to the heat absorption heat exchanger to deliver refrigerant to the evaporator, wherein a tube (190) has a portion (198) immersed in a liquid refrigerant accumulation (200) and has at least one hole (204) along the portion, at least one hole (204) positioned to entrain liquid (202) from the accumulation (200) in a flow of gas (196) through the tube from a headspace (194) to the first outlet (186). 3. The system of claim 2 wherein: the tube is a U-tube having a gas inlet end (192) open to the headspace and extending to the first outlet. 4. The system of claim 1 wherein the means comprises: an inlet (184) coupled to the outlet of the ejector;a first outlet (186) coupled to said at least one of the compressor and suction line heat exchanger; anda second outlet (188) coupled to the heat absorption heat exchanger to deliver refrigerant to the evaporator, wherein a tube (220) has a portion (226) immersed in a liquid refrigerant accumulation (200) and has at least one hole (228) along the portion, the at least one hole (228) positioned to draw liquid (232) from the accumulation (200) to the second outlet (188), the tube (220), further having at least one hole (224) in the headspace. 5. The system of claim 1 further comprising: an expansion device (70) directly upstream of the heat absorption heat exchanger (64) inlet (66). 6. The system of claim 1 wherein: the system has no other ejector. 7. The system of claim 1 wherein: the system has no other compressor. 8. The system of claim 1 wherein: refrigerant comprises at least 50% carbon dioxide, by weight. 9. The system of claim 1 wherein: the means is further means for providing an 85-99% quality refrigerant to at least one of the compressor and, if present, a suction line heat exchanger. 10. A method for operating a system comprising: a compressor (22);a heat rejection heat exchanger (30) coupled to the compressor to receive refrigerant compressed by the compressor;an ejector (38) having: a primary inlet (40) coupled to the heat rejection heat exchanger to receive refrigerant;a secondary inlet (42); andan outlet (44);a heat absorption heat exchanger (64); andmeans (180) for providing at least one of a 1-10% quality refrigerant to the heat absorption heat exchanger and an 85-99% quality refrigerant to at least one of the compressor and, if present, a suction line heat exchanger, the method comprising running the compressor in a first mode wherein: the refrigerant is compressed in the compressor;refrigerant received from the compressor by the heat rejection heat exchanger rejects heat in the heat rejection heat exchanger to produce initially cooled refrigerant;the initially cooled refrigerant passes through the ejector;an outlet flow of refrigerant from the ejector passes to the means, forming a liquid accumulation (200) with a headspace (194) thereabove;a flow (196) of gas from the headspace entrains liquid (202) from the accumulation to provide said 85-99% quality refrigerant; andgas (230) from the headspace is introduced to liquid (232) from the accumulation to form an outlet flow (189) of said 1-10% quality refrigerant. 11. The method of claim 10 wherein: compressor speed is controlled to, in turn control quality of said 85-99% quality refrigerant; anda valve is controlled to, in turn, control quality of said 1-10% quality refrigerant. 12. The method of claim 10 wherein: compressor speed is controlled to, in turn control quality of said 85-99% quality refrigerant responsive to measuring of discharge superheat and, through known calibration of the compressor isotropic efficiency determining a compressor suction quality condition. 13. A system (170; 250; 300; 350) comprising: a compressor (22);a heat rejection heat exchanger (30) coupled to the compressor to receive refrigerant compressed by the compressor;ejector (38) having: a primary inlet (40) coupled to the heat rejection heat exchanger to receive refrigerant;a secondary inlet (42); andan outlet (44);a heat absorption heat exchanger (64) coupled to the outlet of the first ejector to receive refrigerant; anda separation device having: an inlet coupled to the outlet of the ejector (184);a first outlet (186) coupled to said at least one of the compressor and suction line heat exchanger; anda second outlet (188) coupled to the heat absorption heat exchanger to deliver refrigerant to the evaporator, wherein: a first tube (190) has a portion (198) immersed in a liquid refrigerant accumulation (200) and has at least one hole (204) along the portion, at least one hole (204) positioned to entrain liquid (202) from the accumulation (200) in a flow of gas (196) through the tube from a headspace (194) to the first outlet (186); anda second tube (220) has a portion (226) immersed in a liquid refrigerant accumulation (200) and has at least one hole (228) along the portion, the at least one hole (228) positioned to draw liquid (232) from the accumulation (200) to the second outlet (188), the second tube (220), further having at least one hole (224) in the headspace. 14. The system of claim 13 wherein: the first tube is a U-tube having a gas inlet end (192) open to the headspace and extending to the first outlet. 15. A refrigerant separator comprising: a vessel (182);an inlet (184):a first outlet (186);a second outlet (188);means (220) for providing a 1-10% quality refrigerant to the second outlet. 16. The system of claim 15 further comprising: a tube (190) having a portion (198) immersed in a liquid refrigerant accumulation (200) and has at least one hole (204) along the portion, at least one hole (204) positioned to entrain liquid (202) from the accumulation (200) in a flow of gas (196) through the tube from a headspace (194) to the first outlet (186). 17. A system (300; 350) comprising: a compressor (22);a heat rejection heat exchanger (30) coupled to the compressor to receive refrigerant compressed by the compressor;an ejector (38) having: a primary inlet (40) coupled to the heat rejection heat exchanger to receive refrigerant;a secondary inlet (42); andan outlet (44);a heat absorption heat exchanger (64);means (180) for providing at least one of a 1-10% quality refrigerant to the heat absorption heat exchanger and an 85-99% quality refrigerant to at least one of the compressor and, if present, a suction line heat exchanger (250);a flash tank economizer (302) between the heat rejection heat exchanger and the ejector primary inlet. 18. The system of claim 17 wherein: the flash tank economizer has a gas outlet (308) coupled to an economizer port (318) of the compressor. 19. The system of claim 17 wherein: the flash tank economizer has a gas outlet (308) coupled to a suction port (24) of the compressor. 20. The system of claim 17 wherein: the suction line heat exchanger is coupled to an economizer port (318) of the compressor.

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Ejector cycle refrigerant separator

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Ejector cycle refrigerant separator

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