IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0225640
(2006-03-27)
|
등록번호 |
US-8418482
(2013-04-16)
|
국제출원번호 |
PCT/US2006/011018
(2006-03-27)
|
§371/§102 date |
20100521
(20100521)
|
국제공개번호 |
WO2007/111586
(2007-10-04)
|
발명자
/ 주소 |
- Bush, James W.
- Beagle, Wayne P.
- Mitra, Biswajit
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
7 인용 특허 :
16 |
초록
▼
A refrigeration system (20A) comprises an evaporator (27), a two-stage compressor (32) for compressing a refrigerant, a second compressor (34) for compressing the refrigerant, a heat rejecting heat exchanger (24) for cooling the refrigerant, a first economizer circuit (25A), and a second economizer
A refrigeration system (20A) comprises an evaporator (27), a two-stage compressor (32) for compressing a refrigerant, a second compressor (34) for compressing the refrigerant, a heat rejecting heat exchanger (24) for cooling the refrigerant, a first economizer circuit (25A), and a second economizer circuit (25B). The first economizer circuit (25A) is configured to inject refrigerant into an interstage port (48) of the two-stage compressor (32). The second economizer circuit (25B) is connected to the second compressor (34).
대표청구항
▼
1. A refrigeration system comprising: an evaporator for evaporating a refrigerant;a two-stage compressor for compressing the refrigerant, the two-stage compressor having a suction port, an interstage port, and a discharge port;a second compressor for compressing the refrigerant, the second compresso
1. A refrigeration system comprising: an evaporator for evaporating a refrigerant;a two-stage compressor for compressing the refrigerant, the two-stage compressor having a suction port, an interstage port, and a discharge port;a second compressor for compressing the refrigerant, the second compressor having a suction port and a discharge port;a heat rejecting heat exchanger for cooling the refrigerant;a first economizer circuit configured to inject refrigerant into the interstage port of the two-stage compressor, the first economizer circuit having an economizer heat exchanger and an expansion valve;and a second economizer circuit connected to the second compressor, the second economizer circuit having an economizer heat exchanger and an expansion valve;wherein the second economizer circuit is configured to inject a portion of the refrigerant into the suction port of the second compressor. 2. The refrigeration system of claim 1, wherein the second compressor is a single-stage compressor lacking an interstage port. 3. The refrigeration system of claim 1, wherein the second compressor is a two-stage compressor. 4. The refrigeration system of claim 3, further comprising a third economizer circuit configured to inject a portion of the refrigerant into an interstage port of the second compressor. 5. The refrigeration system of claim 1, wherein the heat rejecting heat exchanger is a condenser. 6. The refrigeration system of claim 1, wherein the heat rejecting heat exchanger is a gas cooler. 7. The refrigeration system of claim 1, wherein the refrigerant is carbon dioxide. 8. The refrigeration system of claim 1, wherein the two-stage compressor and the second compressor are part of a single compressor unit with multiple displacement elements. 9. The refrigeration system of claim 1, wherein the economizer heat exchangers of the first and second economizer circuits are flash tanks. 10. The refrigeration system of claim 1, wherein the expansion valves of the first and second economizer circuits are thermal expansion valves. 11. The refrigeration system of claim 1, wherein the expansion valves of the first and second economizer circuits are electronic expansion valves. 12. A method of operating a refrigeration system, the method comprising: evaporating a refrigerant;compressing the refrigerant from a lower pressure to a higher pressure with a two-stage compressor;cooling the refrigerant;directing the refrigerant through a plurality of economizer heat exchangers each having a main path and an economized path;injecting a first portion of the refrigerant from the economized path of one of the economizer heat exchangers into an interstage port of the two-stage compressor, compressing the first portion of the refrigerant in the two-stage compressor;injecting a second portion of the refrigerant from the economized path of another of the economizer heat exchangers into a port of a second compressor, andcompressing the second portion of the refrigerant in the second compressorwherein the injecting a second portion of the refrigerant to injects a portion of the refrigerant into a suction port of the second compressor. 13. The method of claim 12, wherein the second compressor is a single-stage compressor, lacking an interstage port. 14. The method of claim 12, wherein the second compressor is a two-stage compressor. 15. The method of claim 14, further comprising injecting a third portion of the refrigerant from the economized path of a third of the economizer heat exchangers into an interstage port of the second compressor. 16. The method of claim 12, wherein the refrigerant is carbon dioxide. 17. A refrigeration system comprising: an evaporator;a first compressor for compressing a refrigerant, wherein the refrigerant is carbon dioxide;a second compressor for compressing the refrigerant;a heat rejecting heat exchanger for cooling the refrigerant; anda plurality of economizer circuits, wherein each of the economizer circuits is configured to inject a portion of the refrigerant into a respective one of the compressors;wherein the first compressor is a two-stage compressor, and wherein a first economizer circuit is configured to inject a portion of the refrigerant into an interstage port of the first compressor;wherein the second compressor is a two-stage compressor, and wherein a second economizer circuit is configured to inject a second portion of the refrigerant into an interstage port of the second compressor; andwherein a third economizer circuit is configured to inject a third portion of the refrigerant into a suction port of the second compressor, the suction port being different then the interstage port. 18. The refrigeration system of claim 17, wherein the heat rejecting heat exchanger is a gas cooler. 19. The refrigeration system of claim 17, wherein the first compressor and the second compressor are part of a single, multi-cylinder compressor unit. 20. The refrigeration system of claim 17, wherein the economizer circuits each include an expansion valve. 21. The refrigeration system of claim 20, wherein the expansion valve is a thermal expansion valve. 22. The refrigeration system of claim 20, wherein the expansion valve is an electronic expansion valve.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.