Claims
- 1. A duplex-type heat exchanger for use in a refrigeration cycle in which condensed refrigerant is decompressed and then the decompressed refrigerant is evaporated, said duplex-type heat exchanger comprising:
a subcooler for subooling the condensed refrigerant by exchanging heat with ambient air; and an evaporator for evaporating the decompressed refrigerant by exchanging heat with ambient air, wherein heat exchange is performed between the refrigerant passing through said subcooler and the refrigerant passing through said evaporator to thereby cool the refrigerant in said subcooler and heat the refrigerant in said evaporator.
- 2. The duplex-type heat exchanger as recited in claim 1, further comprising a subcooler side heat-transferring fin by which the refrigerant in said subcooler exchanges heat with ambient air, and an evaporator side heat-transferring fin by which the refrigerant in said evaporator exchanges heat with ambient air, wherein said subcooler side heat-transferring fin is connected with said evaporator side heat-transferring fin in a continuous manner, whereby heat exchange is performed between the refrigerant in said subcooler and the refrigerant in said evaporator via said heat-transferring fins.
- 3. The duplex-type heat exchanger as recited in claim 1 or 2, wherein said subcooler is placed at a windward side relative to an air introduction direction and said evaporator is placed at a leeward side, and wherein heat exchange is performed between the refrigerant passing through an inside of said evaporator and air heated by said subcooler.
- 4. The duplex-type heat exchanger as recited in any one of claims 1 to 3, wherein said heat exchanger is provided with a core including a plurality of plate-shaped tubular elements laminated in its plate thickness direction thereof via said heat-transferring fin, wherein each of said tubular elements includes a subcooler side heat exchanging passage and an evaporator side heat exchanging passage independent to said subcooler side heat exchanging passage, each heat exchanging passage extending in a longitudinal direction of said tubular element, wherein said core is provided with a subcooler side inlet passage and a subcooler side outlet passage which are communicating with opposite ends of said subcooler side heat exchanging passage respectively and extending in a direction of laminating said tubular elements, wherein said core is provided with an evaporator side inlet passage and an evaporator side outlet passage which are communicating with opposite ends of said evaporator side heat exchanging passage respectively and extending in a direction of laminating said tubular elements,
whereby the refrigerant flowed into said subcooler side inlet passage passes through said inlet passage and flows into each of said subcooler side heat exchanging passages, and then flows into said subcooler side outlet passage and flows out of said outlet passage, and the refrigerant flows into said evaporator side inlet passage passes through said inlet passage and flows into each of said evaporator side heat exchanging passages, and then flows into said evaporator side outlet passage and flows out of said outlet passage.
- 5. The duplex-type heat exchanger as recited in claim 4, wherein said tubular element is provided with a continuous gap extending in a longitudinal direction of said tubular element and located between said subcooler side heat exchanging passage and said evaporator side heat exchanging passage in said tubular element, said continuous gap being independent to both said heat exchanging passages, and opposite ends of said continuous gap being opened at opposite ends of said tubular element.
- 6. The duplex-type heat exchanger as recited in claim 4 or 5, further comprising a decompressing tube as decompressing means for decompressing the condensed refrigerant, wherein said decompressing tube is placed in said evaporator side inlet passage.
- 7. A refrigeration system having a refrigeration cycle, comprising:
a compressor for compressing refrigerant; a condenser for condensing the refrigerant compressed by said compressor; a receiver tank for storing the refrigerant condensed by said condenser and providing liquefied refrigerant; a subcooler for subcooling the refrigerant provided from said receiver tank; decompressing means for decompressing the refrigerant subcooled by said subcooler; and an evaporator for evaporating the refrigerant decompressed by said decompressing means, wherein said subcooler and said evaporator are integrated to constitute a duplex-type heat exchanger in which heat exchange is performed between the refrigerant passing through said subcooler and the refrigerant passing through said evaporator to thereby cool the refrigerant in said subcooler and heat the refrigerant in said evaporator.
- 8. The refrigeration system as recited in claim 7, wherein said duplex-type heat exchanger is equipped with a heat-transferring fin continuously extending said subcooler and said evaporator, wherein heat exchange is performed between the refrigerant in said subcooler and the refrigerant in said evaporator via said heat-transferring fin.
- 9. The refrigeration system as recited in claim 7 or 8, wherein said subcooler is placed at a windward side relative to an air introduction direction and said evaporator is placed at a leeward side, and wherein heat exchange is performed between air heated by said subcooler and the refrigerant passing through an inside of said evaporator.
- 10. The refrigeration system as recited in any one of claims 7 to 9,
wherein said heat exchanger is provided with a core including a plurality of plate-shaped tubular elements laminated in its plate thickness direction thereof via said heat-transferring fin, wherein each of said tubular elements includes a subcooler side heat exchanging passage and an evaporator side heat exchanging passage independent to said subcooler side heat exchanging passage, each heat exchanging passage extending in a longitudinal direction of said tubular element, wherein said core is provided with a subcooler side inlet passage and a subcooler side outlet passage which are communcating with opposite ends of said subcooler side heat exchanging passage respectively and extending in a direction of laminating said tubular elements, wherein said core is provided with an evaporater side inlet passage and an evaporator side outlet passage which are communicating with opposite ends of said evaporator side heat exchanging passage respectively and extending in a direction of laminating said tubular elements, whereby the refrigerant flowed into said subcooler side inlet passage passes through said inlet passage and flows into each of said subcooler side heat exchanging passages, and then flows into said subcooler side outlet passage and flows out of said outlet passage, and the refrigerant flows into said evaporator side inlet passage passes through said inlet passage and flows into each of said evaporator side heat exchanging passages, and then flows into said evaporator side outlet passage and flows out of said outlet passage.
- 11. The refrigeration system as recited in claim 10, wherein said tubular element is provided with a continuous gap extending in a longitudinal direction of said tubular element and located between said subcooler side heat exchanging passage and said evaporator side heat exchanging passage in said tubular element, said continuous gap being independent to both said heat exchanging passages, and opposite ends of said continuous gap being opened at opposite ends of said tubular element.
- 12. The refrigeration system as recited in claim 10 or 11, further comprising a decompressing tube as decompressing means for decompressing the condensed refrigerant, wherein said decompressing tube is placed in said evaporator side inlet passage.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2001-27807 |
Feb 2001 |
JP |
|
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application is an application filed under 35 U.S.C. § 111(a) claiming the benefit pursuant to 35 U.S.C. § 119(e)(1) of the filing date of Provisional Application No. 60/302,687 filed on Jul. 5, 2001 pursuant to 35 U.S.C. § 111(b).
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
PCT/JP02/00911 |
2/4/2002 |
WO |
|