IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0659926
(2005-07-29)
|
등록번호 |
US-8113008
(2012-02-14)
|
우선권정보 |
DE-10 2004 038 640 (2004-08-09) |
국제출원번호 |
PCT/EP2005/008255
(2005-07-29)
|
§371/§102 date |
20080102
(20080102)
|
국제공개번호 |
WO2006/015741
(2006-02-16)
|
발명자
/ 주소 |
- Heinbokel, Bernd
- Gernemann, Andreas
- Schierhorn, Uwe
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
13 |
초록
▼
The invention relates to a refrigeration circuit having a mono- or multi-component refrigerant circulating therein, said refrigeration circuit comprising, in the direction of flow, a condenser, a collecting container, a relief device connected upstream of an evaporator, an evaporator and a compresso
The invention relates to a refrigeration circuit having a mono- or multi-component refrigerant circulating therein, said refrigeration circuit comprising, in the direction of flow, a condenser, a collecting container, a relief device connected upstream of an evaporator, an evaporator and a compressor unit with single-stage compression. According to the invention, there is an intermediate relief device (a) arranged between the condenser (1) and the collecting container (3).Furthermore, there is disclosed a method of operating a refrigeration device in which pressure relief of the refrigerant to an (intermediate) pressure of 5 to 40 bar is effected in the intermediate relief device (a) arranged between the condenser (1) and the collecting container (3).
대표청구항
▼
1. A refrigeration circuit having a refrigerant circulating therein, said refrigeration circuit enabling a transcritical operation, said refrigeration circuit comprising, in the direction of flow: a condenser/gascooler (1); a collecting container (3); a relief device (b, c); an evaporator (E2, E3);
1. A refrigeration circuit having a refrigerant circulating therein, said refrigeration circuit enabling a transcritical operation, said refrigeration circuit comprising, in the direction of flow: a condenser/gascooler (1); a collecting container (3); a relief device (b, c); an evaporator (E2, E3); and a compressor unit (6) compressing the refrigerant to a pressure between 10 and 120 bar, wherein: an intermediate relief device (a) is arranged between the condenser (1) and the collecting container (3), the intermediate relief device relieving downstream pressure to an intermediate pressure of 5-40 bar; a gas space of the collecting container (3) is connected or connectable (11, 12) to an input of the compressor unit (6); a relief valve (e) is in a connection line (11, 12) between the gas space of the collecting container (3) and the input of the compressor unit (6); a line (2) from the condenser/gascooler (1) divides into a first line section (2′) and into a second line section (13); in the second line section (13) a relief valve is arranged; the refrigerant in the second line section (13) is evaporated in the heat transfer means (E1) against the refrigerant in the first line section (2′); a pressure line (7) is connected or connectable to a line (2, 2′, 2″) connecting the condenser/gascooler (1) and the collecting container (3); and a line (18) having a valve (i) provided therein connects a first line section (2′) after the heat transfer means (E1) with the pressure line (7) after the compressor unit (6). 2. The refrigeration circuit according to claim 1, wherein the refrigerant comprises CO2. 3. The refrigeration circuit according to claim 1, characterized in that a heat transfer means (E1) is connected upstream of the collecting container (3). 4. The refrigeration circuit according to claim 3, characterized in that the heat transfer means (E1) is connected or connectable (2, 13) on an input side to an output of the condenser/gascooler (1). 5. The refrigeration circuit according to claim 1, wherein the second line section (13, 14) after the heat transfer means (E1) is connected or connectable to an input of a compressor (6′) of the compressor unit (6). 6. The refrigeration circuit according to claim 1, wherein the gas space of the collecting container (3) is connected or connectable to an input of a compressor (6′) of the compressor unit (6). 7. The refrigeration circuit according to claim 1, wherein a pressure line (7) is connected or connectable directly to the collecting container (3). 8. The refrigeration circuit according to claim 1, wherein a relief valve (h) is in a line (17) connecting the pressure line (7) to the collecting container (3). 9. The refrigeration circuit according to claim 1, wherein a heat exchanger/subcooler (E5) is arranged between the collecting container (3) and the relief device (c, b, d). 10. The refrigeration circuit according to claim 9, wherein the heat exchanger/subcooler (E5) is connected or connectable (12) on an input side to the gas space of the collecting container (3). 11. The refrigeration circuit according to claim 9, wherein the liquid refrigerant is subcooled in the heat exchanger/subcooler (E5) with respect to the flash gas from the collecting container (3) which has been relieved by the valve (e). 12. The refrigeration circuit according to claim 1, wherein the refrigerant withdrawn from the collecting container (3) is fed via a line (8) to one or more deepfreeze consumers (E4) having a relief valve (d) connected upstream thereof. 13. The refrigeration circuit according to claim 1, wherein a second compressor unit (10) is provided which is supplied via a suction line (9) with refrigerant evaporated in a deep-freeze consumer (E4), wherein the refrigerant compressed in the compressor unit (10) is fed via a suction line (11) to the compressor unit (6). 14. Method for transcritical operation of the refrigeration circuit according claim 1, wherein: the pressure relief of the refrigerant to an intermediate pressure of 5 to 40 bar is effected in the intermediate relief device (a) arranged between the condenser/gascooler (1) and the collecting container (3); andthe intermediate pressure is kept constant by means of the relief valve (e) in the connection line (11, 12) between the gas space of the collecting container (3) and the input of the compressor unit (6). 15. The method according to claim 14, characterized in that the refrigerant (2) is subjected to additional cooling (E1) prior to intermediate pressure-relief (a) of the same. 16. The method according to claim 15, characterized in that cooling (E1) of the refrigerant (2) is effected with respect to a partial flow of the refrigerant (13). 17. The method according to claim 14, characterized in that the refrigerant (4) withdrawn from the collecting container (3) is subjected to subcooling (E5). 18. The method according to claim 17, characterized in that subcooling (E5) of the refrigerant (4) withdrawn from the collecting container (3) is effected with respect to the flash gas (12) withdrawn from the collecting container (3). 19. The method according to claim 14, characterized in that at least a partial flow of the flash gas (12) withdrawn from the collecting container (3) is superheated (E6, E7) at least temporarily with respect to the compressed refrigerant (7). 20. The method according to claim 14, characterized in that the quantity of the flash gas sucked off at the intermediate pressure level is regulated by valves (g, x, y, z). 21. The method according to claim 14, characterized in that the intermediate pressure is regulated to a constant difference from the suction pressure by means of at least one valve (e, h, j). 22. A method for operation of the refrigeration circuit according to claim 1, wherein: the condenser/gascooler (1) operates at a condensing or liquefying pressure;the pressure relief of the refrigerant to an intermediate pressure of beneath a lowest expected said condensing or liquefying pressure is effected in the intermediate relief device (a) arranged between the condenser/gascooler (1) and the collecting container (3); andthe intermediate pressure is kept constant by means of the relief valve (e) in the connection line (11, 12) between the gas space of the collecting container (3) and the input of the compressor unit (6). 23. The refrigeration circuit of claim 1 wherein: the compressor unit (6) is a single-stage compressor unit;a pressure line (7) carries compressor refrigerant from the compressor unit (6) to the condenser/gascooler (1); anda flash gas sucked off from the gas space of the collecting container is superheated in a heat exchanger (E6) against compressed refrigerant in the pressure line (7). 24. The refrigeration circuit of claim 1 wherein: a pressure line (7) releases compressed refrigerant from the compressor unit (6) to the condenser/gascooler (1);the pressure line (7) is connected or connectable to the gas space of the collecting container (3) via a connecting line (17) having an additional relief valve (h) therein or the pressure line (7) is connected or connectable via connecting line (18) having an additional valve (j) therein to a line connecting the condenser/gascooler (1) to the intermediate relief device (a); andthe additional relief valve (e) and the additional relief valve (h; j) allow to keep the intermediate pressure constant for all operating conditions. 25. The refrigeration circuit of claim 1 wherein: the compressor unit (6) is a single-stage compressor unit; andthe connection line (11, 12) joins a compressor suction line (5) at a position upstream of the compressor unit (6). 26. The refrigeration circuit of claim 1 wherein: the compressor unit (6) is a single-stage compressor unit;a heat exchanger/subcooler (E5) is between the collecting container (3) and the expansion device (B, C);a subcooling of the refrigerant sucked off from the container (3) is affected in the heat exchanger/subcooler (E5) against the flash gas coming from the collecting container (3) over the connection line (11, 12); andthe flash gas is expanded by the expansion valve (E). 27. A refrigeration circuit having a refrigerant circulating therein, said refrigeration circuit enabling a transcritical operation, said refrigeration circuit comprising, in the direction of flow: a condenser/gascooler (1); a collecting container (3); a relief device (b, c); an evaporator (E2, E3); and a compressor unit (6), wherein: an intermediate relief device (a) is between the condenser (1) and the collecting container (3); the circuit further includes at least one freezing consumer (E4), a relief valve (d) upstream of the at least one freezing consumer, and a further compressor unit (10); in operation, refrigerant is sucked off from the collecting container (3), is led to the evaporators (E2, E3) and is led, after evaporation in the evaporators (E2, E3) to the compressor unit (6); a partial flow of refrigerant is led directly from the collecting container (3) to the relief valve (d), the at least one freezing consumer (E4) and then after evaporation in the at least one freezing consumer, to the further compressor unit (10); and in operation, the further compressor unit compresses the refrigerant partial flow to the input pressure of the compressor unit (6) to pass the partial flow to the input of the compressor unit (6); a heat transfer means (E6) is provided, in which a flash gas withdrawn from the collecting container (3) is superheated with respect to compressed refrigerant in a pressure line (7); the flashgas upon passage through the heat transfer means (E6) is fed via a line (16′) to an input of a compressor (6′) of the compressor unit (6); and at least one valve (g; x, y, z) is provided in the line (16, 16′).
※ AI-Helper는 부적절한 답변을 할 수 있습니다.