Claims
- 1. A cooling device for boiling and condensing refrigerant, the cooling device cooling a heat-generating member contained within a housing, comprising:a first heat exchanger in which refrigerant flows, said first heat exchanger being disposed inside said housing to perform heat exchange between said refrigerant flowing therethrough and high-temperature first fluid within said housing; a second heat exchanger in which refrigerant flows, said second heat exchanger having upper and lower tanks extending in a tank longitudinal direction and a plurality of tubes through which said upper and lower tanks communicate with each other, said second heat exchanger being disposed outside said housing to perform heat exchange between said refrigerant flowing therethrough and low-temperature second fluid outside said housing; a first connection pipe through which gas refrigerant boiled in said first heat exchanger is introduced into said upper tank of said second heat exchanger; and a second connection pipe through which liquid refrigerant condensed in said second heat exchanger is returned to said first heat exchanger from said lower tank of said second heat exchanger, wherein: said first connection pipe has a plurality of first branched pipes connected to said upper tank of said second heat exchanger in a T-shape; and said second connection pipe is connected to said lower tank of said second heat exchanger in such a manner that position relationships of said first branched pipes relative to said second connection pipe are left-right unsymmetrical.
- 2. The cooling device according to claim 1, wherein said second connection pipe is connected to said lower tank at a position approximately equal to one of said first branched pipes in said tank longitudinal direction.
- 3. The cooling device according to claim 1, wherein:said second connection pipe has a plurality of second branched pipes connected to said lower tank of said second heat exchanger; and said second branched pipes of said second connection pipe have a number smaller than that of said first branched pipes of said first connection pipe.
- 4. The cooling device according to claim 1, wherein:said second connection pipe has a plurality of second branched pipes connected to said lower tank of said second heat exchanger; and the position relationships of said first branched pipes relative to said second branched pipes are left-right unsymmetrical.
- 5. The cooling device according to claim 4, wherein:said first branched pipes are classified into a first group in which said first branched pipes are arranged at the positions approximately equal to the positions of said second branched pipes in said longitudinal direction, and a second group excepting from said first group; and said second group is arranged so that all said first branched pipes are approximately uniformly disposed in said tank longitudinal direction.
- 6. The cooling device according to claim 1, wherein at least one of said first connection pipe and said second connection pipe is formed into a multi-pipe structure in which a plurality of pipes having different diameters are assembled approximately concentrically.
- 7. The cooling device according to claim 1, wherein:said second connection pipe has a predetermined pipe length so that a predetermined reserve refrigerant is stored; and said second connection pipe has a lateral pipe portion extending approximately horizontally, said lateral pipe portion being disposed between said first heat exchanger and said second heat exchanger.
Priority Claims (5)
Number |
Date |
Country |
Kind |
09-340961 |
Dec 1997 |
JP |
|
09-341135 |
Dec 1997 |
JP |
|
09-341159 |
Dec 1997 |
JP |
|
10-16706 |
Jan 1998 |
JP |
|
10-50764 |
Mar 1998 |
JP |
|
Parent Case Info
This is a division of U.S. patent application Ser. No. 09/193,141, filed Nov. 17, 1998.
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