IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0602276
(2003-06-24)
|
발명자
/ 주소 |
- Memory, Stephen B.
- Yin, Jianmin
- Collier, Samuel J.
|
출원인 / 주소 |
- Modine Manufacturing Company
|
대리인 / 주소 |
Wood, Phillips, Katz, Clark &
|
인용정보 |
피인용 횟수 :
7 인용 특허 :
7 |
초록
▼
The efficiency of refrigeration systems operating on the vapor compression cycle and employing suction line heat exchangers is increased by introducing refrigerant into the lower pressure side of the suction line heat exchanger at a quality less than 1 and introducing refrigerant that has passed thr
The efficiency of refrigeration systems operating on the vapor compression cycle and employing suction line heat exchangers is increased by introducing refrigerant into the lower pressure side of the suction line heat exchanger at a quality less than 1 and introducing refrigerant that has passed through the low pressure side of the suction line heat exchanger into the compressor inlet at a quality that is equal to 1.
대표청구항
▼
1. A method of increasing the efficiency of a system including a vapor compression cooling cycle and having an evaporator with an inlet connected to an outlet of a gas cooler and an outlet connected to the inlet of a compressor, the compressor having an outlet connected to an inlet of the gas cooler
1. A method of increasing the efficiency of a system including a vapor compression cooling cycle and having an evaporator with an inlet connected to an outlet of a gas cooler and an outlet connected to the inlet of a compressor, the compressor having an outlet connected to an inlet of the gas cooler and a suction line heat exchanger having two fluid flow paths in heat exchange relation with one another with one flow path being located between the evaporator inlet and the compressor outlet and the other flow path being located between the evaporator outlet and the compressor inlet, an accumulator downstream of said evaporator outlet and upstream of paid other flow path, and a refrigerant in said system that may exist as a vapor, a liquid or a mixture of vapor and liquid whose quality at a given point is defined as the weight ratio of the mass of refrigerant vapor to the combined mass of refrigerant vapor and liquid refrigerant at the given point, including the steps of:(a) introducing refrigerant into said other flow path of said suction line heat exchanger at a quality less than 1; and (b) introducing refrigerant that has passed through said other flow path into said compressor inlet at a quality that is substantially equal to 1; wherein said accumulator is characterized by a housing including a liquid refrigerant section and a refrigerant vapor section, a liquid outlet connected to said liquid refrigerant section, a vapor outlet connected to said refrigerant vapor section and a junction whereat said outlets are connected to each other to said other flow path.2. The method of claim 1 wherein said system is further characterized by a flow restrictor disposed between said vapor outlet and said junction.3. The method of claim 2 wherein said flow restrictor is a valve.4. A method of increasing the efficiency of a system including a vapor compression cooling cycle and having an evaporator with an inlet connected to an outlet of a gas cooler and an outlet connected to the inlet of a compressor, the compressor having an outlet connected to an inlet of the gas cooler and a suction line heat exchanger having two fluid flow paths in heat exchange relation with one another with one flow path being located between the evaporator inlet and the compressor outlet and the other flow path being located between the evaporator outlet and the compressor inlet, an accumulator downstream of said evaporator outlet and upstream of said other flow path, and a refrigerant in said system that may exist as a vapor, a liquid or a mixture of vapor and liquid whose quality at a given point is defined as the weight ratio of the mass of refrigerant vapor to the combined mass of refrigerant vapor and liquid refrigerant at the given point, including the steps of:(a) introducing refrigerant into said other flow path of said suction line heat exchanger at a quality less than 1; and (b) introducing refrigerant that has passed through said other flow path into said compressor inlet at a quality that is substantially equal to 1; wherein said accumulator includes a housing having a liquid refrigerant section and a refrigerant vapor section and an outlet conduit therein which is connected to said other flow path, said conduit including a first opening in said liquid refrigerant section and upstream of a second opening in said refrigerant vapor section.5. A method of increasing the efficiency of a system including a vapor compression cooling cycle and having an evaporator with an inlet connected to an outlet of a gas cooler and an outlet connected to the inlet of a compressor, the compressor having an outlet connected to an inlet of the gas cooler and a suction line heat exchanger having two fluid flow paths in heat exchange relation with one another with one flow path being located between the evaporator inlet and the compressor outlet and the other flow path being located between the evaporator outlet and the compressor inlet, and a refrigerant in said system that may exist as a vapor, a liquid or a mixture of vapor and liquid whose quality at a given point is defined as the weight ratio of the mass of refrigerant vapor to the combined mass of refrigerant vapor and liquid refrigerant at the given point, and an accumulator interposed between said other flow path and said evaporator outlet, said accumulator including both liquid refrigerant and refrigerant vapor, including the steps of:(a) introducing refrigerant from said evaporator outlet into said accumulator; (b) discharging refrigerant having a quality less than 1 from said accumulator into said other flow path by entraining or educting liquid refrigerant from said accumulator by refrigerant vapor exiting said accumulator to said compressor inlet, said step being performed within the accumulator; and (c) introducing refrigerant having a quality substantially equal to 1 from said other flow path into said compressor inlet. 6. A method of increasing the efficiency of a system including a vapor compression cooling cycle and having an evaporator with an inlet connected to an outlet of a gas cooler and an outlet connected to the inlet of a compressor, the compressor having an outlet connected to an inlet of the gas cooler and a suction line heat exchanger having two fluid flow paths in heat exchange relation with one another with one flow path being located between the evaporator inlet and the compressor outlet and the other flow path being located between the evaporator outlet and the compressor inlet, and a refrigerant in said system that may exist as a vapor, a liquid or a mixture of vapor and liquid whose quality at a given point is defined as the weight ratio of the mass of refrigerant vapor to the combined mass of refrigerant vapor and liquid refrigerant at the given point, and an accumulator interposed between said other flow path and said evaporator outlet, said accumulator including both liquid refrigerant and refrigerant vapor, including the steps of:(a) introducing refrigerant from said evaporator outlet into said accumulator; (b) discharging refrigerant having a quality less than 1 from said accumulator into said other flow path by entraining or educting liquid refrigerant from said accumulator by refrigerant vapor exiting said accumulator to said compressor inlet, said step being performed downstream of the accumulator; and (c) introducing refrigerant having a quality substantially equal to 1 from said other flow path into said compressor inlet. 7. A refrigeration system including a compressor having an inlet and an outlet, a gas cooler connected to said outlet to cool compressed refrigerant received from the compressor, an evaporator connected to the gas cooler for receiving cooled, compressed refrigerant therefrom, an accumulator connected to the evaporator to receive expanded refrigerant therefrom and to the compressor inlet and a suction line heat exchanger having a first refrigerant flow path interposed between the gas cooler and the evaporator and a second refrigerant flow path in heat exchange relation with said first refrigerant flow path and interconnecting the accumulator and the compressor inlet, and characterized by the accumulator including an inlet connected to the evaporator, a housing, including said accumulator inlet, for receipt of refrigerant in vapor, liquid or vapor/liquid form, a first housing outlet located to allow refrigerant vapor to exit the housing and a second outlet located to allow liquid refrigerant to exit the housing, said first and second outlets being connected to said second flow path and including different openings in a single tube.8. The refrigeration system of claim 7 wherein said tube is a J or U-shaped tube located in said housing and having a short leg and a long leg with said first outlet being at or adjacent to an upper end of said short leg and said second outlet being one or more openings in said long leg and located vertically below said first outlet.9. The refrigeration system of claim 8 further including a bight interconnecting lower ends of said short and long legs, and a lubricant exit hole in said bight vertically below said second outlet.10. A refrigeration system including:a compressor having an inlet and an outlet; a gas cooler connected to said compressor outlet to cool compressed refrigerant received from the compressor; an evaporator connected to the gas cooler for receiving cooled, compressed refrigerant therefrom; an accumulator connected to said evaporator to receive refrigerant therefrom, said accumulator being a housing having an intended level of liquid refrigerant and a refrigerant vapor space above said intended liquid level of refrigerant, a first outlet from said accumulator disposed above said intended level of liquid refrigerant and a second outlet from said accumulator below said intended level of liquid refrigerant, said first and second outlets being in fluid communication with each other and with said compressor inlet; and a suction line heat exchanger in said system having a first refrigerant flow path interconnecting said gas cooler and said evaporator and a second refrigerant flow path in heat exchange relation with said first refrigerant flow path and interconnecting said accumulator and said compressor inlet and receiving refrigerant from the accumulator at a quality less than 1 and delivering the refrigerant to the compressor inlet at a quality substantially equal to 1, quality at a given point being defined as the weight ratio of the mass of refrigerant vapor to the combined mass of refrigerant vapor and liquid refrigerant at the given point. 11. The refrigeration system of claim 10 wherein said second outlet is disposed in a wall of said housing separate from said first outlet.12. The refrigeration system of claim 10 wherein said accumulator includes a tube within said housing and both said outlets comprises respective inlet ports in said tube.13. The refrigeration system of claim 12 wherein the inlet port defining said first outlet is upstream of the inlet port defining said second outlet.14. The refrigeration system of claim 13 wherein said tube is a J or U-shaped tube having a first leg having said first outlet therein at a location above said intended level of liquid refrigerant and a second leg connected to said first leg by a bight and having said second outlet below said intended level of liquid refrigerant.15. The refrigeration system of claim 14 wherein said accumulator includes an intended level of system lubricant below said intended level of refrigerant liquid and said bight is located below said intended level of system lubricant and includes a system lubricant inlet port therein.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.