Claims
- 1. A cooling apparatus boiling and condensing refrigerant, for cooling a high-temperature medium, said cooling apparatus comprising:
a refrigerant tank for containing liquid refrigerant which is partially boiled and vaporized into gaseous refrigerant by heat transferred from said high-temperature medium, and for sending out gas-liquid mixed refrigerant of the gaseous refrigerant and the liquid refrigerant; and a radiator communicated to said refrigerant tank to receive the gas-liquid mixed refrigerant from said refrigerant tank, for transferring the heat of the gas-liquid mixed refrigerant to a low-temperature medium to condense the gaseous refrigerant and for returning the liquid refrigerant and the condensed liquid refrigerant to said refrigerant tank; wherein said radiator includes:
a radiating passage to condense the gaseous refrigerant, and condensation radiation area reduction prevention means for preventing a reduction of a radiating area of said radiating passage, in which the gaseous refrigerant is condensed.
- 2. A cooling apparatus boiling and condensing refrigerant, for cooling a high-temperature medium, said cooling apparatus comprising:
a refrigerant tank for containing therein liquid refrigerant which is partially boiled and vaporized into gaseous refrigerant by heat transferred from said high-temperature medium, and for sending out gas-liquid mixed refrigerant of gaseous refrigerant and liquid refrigerant; and a radiator being in fluid communication with said refrigerant tank, into which said gas-liquid mixed refrigerant flows from said refrigerant tank, for transferring the heat of said gas-liquid mixed refrigerant to low-temperature medium to condense said gaseous refrigerant and for returning said liquid refrigerant and said condensed liquid refrigerant to said refrigerant tank, wherein said radiator includes:
an inflow passage into which said gas-liquid mixed refrigerant flows from the refrigerant tank, an outflow passage for sending out said refrigerant tank to said refrigerant tank, and a plurality of radiating passages communicating said inflow passage with said outflow passage, said inflow passage having a large-diameter portion having a diameter (r1) and a small-diameter portion having a diameter (r2) smaller than said diameter (r1) of said large-diameter portion, which are formed alternately in a direction where the gas-liquid mixed refrigerant flows.
- 3. A cooling apparatus according to claim 2, wherein said outflow passage has a large-diameter portion having a diameter and a small-diameter portion having a diameter smaller than said diameter of said large-diameter portion, which are formed alternately in a direction where the vaporized refrigerant flows, and
said radiating passages interconnect between said large-diameter portion of said inflow passage and said large-diameter portion of said outflow passage.
- 4. A cooling apparatus according to claim 3, wherein each of said inflow passage and said outflow passage includes a plurality of large-diameter portions and small-diameter portions, and
said radiating passages are for interconnecting between a specified one of said large-diameter portion of said inflow passage and a specified one of said large-diameter portion of said outflow passage, respectively.
- 5. A cooling apparatus according to claim 2, wherein said refrigerant tank is provided internally with a vapor passage through which the vaporized refrigerant having been vaporized by heat transferred from said high-temperature medium and the liquid refrigerant ascends toward said inflow passage, and a condensed liquid passage through which the condensed liquid refrigerant having been cooled and condensed in said radiator returns from said outflow passage descends.
- 6. A cooling apparatus according to claim 2, wherein the refrigerant flow through said radiating passages in different directions from each other.
- 7. A cooling apparatus according to claim 6, further comprising:
a connecting portion for connecting between said refrigerant tank and said radiator, wherein said plurality of radiating passages are formed in parallel with said connecting portion.
- 8. A cooling apparatus according to claim 6, wherein said radiator includes a plurality of inflow passages formed at different positions.
- 9. A cooling apparatus according to claim 6, wherein said plurality of inflow passages are formed on a center portions of said refrigerant tank.
- 10. A cooling apparatus according to claim 6, wherein
said radiator includes a plurality of outflow passages formed at different positions.
- 11. A cooling apparatus according to claim 6, wherein said plurality of inflow passages are disposed on both side end portions of said refrigerant tank.
- 12. A cooling apparatus boiling and condensing refrigerant, for cooling a high-temperature medium, said cooling apparatus comprising:
a refrigerant tank for containing therein liquid refrigerant which is partially boiled and vaporized into gaseous refrigerant by heat transferred from said high-temperature medium, and having a refrigerant tank outlet for sending out gas-liquid mixed refrigerant of gaseous refrigerant and liquid refrigerant; and a radiator being in fluid communication with said refrigerant tank, into which said gas-liquid mixed refrigerant flows from said refrigerant tank, for transferring the heat of said gas-liquid mixed refrigerant to low-temperature medium to condense said gaseous refrigerant and for returning said liquid refrigerant and said condensed liquid refrigerant to said refrigerant tank, said radiator having an inner diameter (r1), wherein said radiator includes:
a liquid refrigerant returning portion including an inflow return chamber having a small-diameter opening having a diameter (r2) smaller than said inner diameter (r1) and communicated with said refrigerant tank outlet of said refrigerant tank, for damming liquid refrigerant by said small-diameter opening, and a return passage communicated with an outflow return chamber to return the dammed liquid refrigerant to said refrigerant tank; and a plurality of radiating passages connected to said small-diameter opening of said liquid refrigerant returning portion in communication with said tank outlet through said inflow return chamber, said radiating passages receiving the gaseous refrigerant of the gas-liquid mixed refrigerant to condense the gaseous refrigerant therein and returning the condensed liquid refrigerant to said refrigerant tank.
- 13. A cooling apparatus according to claim 12, wherein,
said inflow return chamber of said liquid refrigerant returning portion has a bottom surface, and the lowermost portion of said small-diameter opening is higher than said bottom surface by a predetermined height.
- 14. A cooling apparatus according to claim 12, wherein said small-diameter opening is formed by punching into a substantially elliptic or rectangular shape.
- 15. A cooling apparatus according to claim 12, wherein,
said refrigerant tank has a refrigerant tank inlet through which the liquid refrigerant and the condensed liquid refrigerant flow from said radiator into said refrigerant tank, and said liquid refrigerant returning portion has an outflow return chamber formed integrally with said refrigerant tank inlet, and said return passage and said radiating passages communicate with said refrigerant tank through said outflow return chamber.
- 16. A cooling apparatus according to claim 15, wherein said refrigerant tank is provided internally with a vapor passages through which the gaseous refrigerant having been vaporized by heat transferred from said high-temperature medium and the liquid refrigerant ascends toward said refrigerant tank outlet, and a condensed liquid passage through which the liquid refrigerant having been cooled and condensed in said radiator and returned through said refrigerant tank inlet descends.
- 17. A cooling apparatus according to claim 15, wherein,
each of said radiating passages includes a bottom surface therein, said bottom surface is inclined from said refrigerant tank outlet toward said refrigerant tank inlet.
- 18. A cooling apparatus boiling and condensing refrigerant, for cooling a high-temperature medium, said cooling apparatus comprising:
a refrigerant tank for containing therein liquid refrigerant which is partially boiled and vaporized into gaseous refrigerant by heat transferred from said high-temperature medium, and for sending out gas-liquid mixed refrigerant of gaseous refrigerant and liquid refrigerant; and a radiator being in fluid communication with said refrigerant tank, into which said gas-liquid mixed refrigerant flows from said refrigerant tank, for transferring the heat of said gas-liquid mixed refrigerant to low-temperature medium to condense said gaseous refrigerant and for returning said liquid refrigerant and said condensed liquid refrigerant to said refrigerant tank, wherein said radiator includes:
an inflow passage formed on an inlet side of the mixed refrigerant and having a first large-diameter portion, a small-diameter portion, and a second large-diameter portion disposed in this order in a direction where the gas-liquid mixed refrigerant flows, each diameter of said first and second diameter-being larger than a diameter of said small-diameter portion, a return passage communicated with said first large-diameter portion so that the liquid refrigerant dammed by said small-diameter portion flows therethrough, a plurality of radiating passages communicated with said second large-diameter portion, said radiating passages receiving the gaseous refrigerant of the gas-liquid mixed refrigerant, which has passed through the reduced portion, to condense the gaseous refrigerant therein, and an outflow passage communicated with said return passage and said radiating passages to return the dammed liquid refrigerant and the condensed liquid refrigerant into said refrigerant tank.
- 19. A cooling apparatus according to claim 18, wherein,
said first-diameter portion has a bottom surface, and the lowermost portion of said small-diameter portion is higher than said bottom surface by a predetermined height.
- 20. A cooling apparatus according to claim 18, wherein the small-diameter portion is formed by punching into a substantially elliptic or substantially rectangular opening.
- 21. A cooling apparatus according to claim 18, wherein,
said refrigerant tank includes a refrigerant tank outlet for sending out gas-liquid mixed refrigerant of gaseous refrigerant and liquid refrigerant and a refrigerant tank inlet through which the liquid refrigerant and the condensed liquid refrigerant flow from said radiator into said refrigerant tank, and said refrigerant tank is provided internally with a vapor passage through which the gaseous refrigerant having been vaporized by heat transferred from said high-temperature medium and the liquid refrigerant ascends toward said refrigerant tank outlet, and a condensed liquid passage communicated with said refrigerant tank inlet, through which the liquid refrigerant having been cooled and condensed in said radiator descends.
- 22. A cooling apparatus according to claim 18, wherein,
each of said radiating passages has a bottom surface therein, said outflow passage includes a large-diameter portion and a small-diameter portion, which are formed alternately in a direction where the gaseous refrigerant flows, and the lowermost portion of said small-diameter portion of the outflow passage is lower than the lowermost portions of said radiating passage.
- 23. A cooling apparatus boiling and condensing refrigerant, for cooling a high-temperature medium, said cooling apparatus comprising:
a refrigerant tank for containing liquid refrigerant which is partially boiled and vaporized into a gaseous refrigerant by heat transferred from said high-temperature medium; and a radiator communicated with said refrigerant tank to receive the gas-liquid mixed refrigerant from said refrigerant tank, and for transferring the heat of the gas-liquid mixed refrigerant to a low-temperature medium to condense the gaseous refrigerant and for returning the liquid refrigerant and the condensed liquid refrigerant to said refrigerant tank; wherein the refrigerant tank is provided internally with a vapor passage through which the gaseous refrigerant having been vaporized by heat transferred from said high-temperature medium and the liquid refrigerant ascend, and a condensed liquid passage through which the liquid refrigerant having been cooled and condensed in said radiator descends; said radiator is provided with an inflow passage having a plurality of inflow communicating chambers and communicated with said vapor passage, an outflow passage having a plurality of outflow communicating chambers and communicated with said condensed liquid passage, a plurality of radiating passages each for interconnecting a specified one of the inflow communicating chambers and a specified one of the outflow communicating chambers, respectively, and a restricting opening formed between the adjacent ones of said plurality of inflow communicating chambers to suppress the liquid refrigerant from flowing from one to the other of the adjacent inflow communicating chambers.
- 24. A cooling apparatus according to claim 23, wherein said restricting opening is formed by punching into a substantially elliptic or rectangular shape.
- 25. A cooling apparatus according to claim 23, wherein,
each of said radiating passages has a bottom surface therein, and said bottom surface is inclined from said inflow passage toward said outflow passage.
- 26. A cooling apparatus according to claim 1, wherein,
said radiator is constructed by joining a plurality of plate-shaped members each having a joined portion, and said joined portion is formed by bending said plate-shaped member to be elevated.
- 27. A cooling apparatus boiling and condensing refrigerant, for cooling a high-temperature medium, said cooling apparatus comprising:
a refrigerant tank for containing liquid refrigerant which is partially boiled and vaporized into gaseous refrigerant by heat transferred from said high-temperature medium, and for sending out gas-liquid mixed refrigerant of the gaseous refrigerant and the liquid refrigerant; and a radiator communicated to said refrigerant tank to receive the gas-liquid mixed refrigerant from said refrigerant tank, for transferring the heat of the gas-liquid mixed refrigerant to a low-temperature medium to condense the gaseous refrigerant and for returning the liquid refrigerant and the condensed liquid refrigerant to said refrigerant tank; wherein said radiator is provided with a radiating passage to condense the gaseous refrigerant, and adhesion amount reducing means for reducing an amount of the liquid refrigerant having flowed from said refrigerant tank into said radiator and adhering to an inner surface of said radiating passage.
- 28. A cooling apparatus boiling and condensing refrigerant, for cooling a high-temperature medium, said cooling apparatus comprising:
a refrigerant tank for containing refrigerant to be vaporized by heat transferred from said high-temperature medium; and a radiator communicating with said refrigerant tank to condense the gaseous refrigerant vaporized in said refrigerant tank into the liquid refrigerant; wherein, said radiator includes:
an inflow communicating portion into which the refrigerant flows; an outflow communicating portion from which the refrigerant flows out; a refrigerant passage disposed to be inclined from substantially the horizontal, for interconnecting said inflow communicating portion and said outflow communicating chamber; a condensing fin disposed in said refrigerant passage to condense the gaseous refrigerant into the condensed liquid refrigerant, said condensing fin being provided with a plurality of slits through which the condensed liquid refrigerant drops onto a bottom surface of said refrigerant passage.
- 29. A cooling apparatus according to claim 28, wherein,
said refrigerant passage includes a liquid-phase refrigerant passage formed in a lower portion thereof, through which the condensed liquid refrigerant flows, and a gas-phase refrigerant passage formed over said liquid-phase refrigerant passage, through which the gaseous refrigerant flows, and said condensing fin is disposed in said liquid-phase passage.
- 30. A cooling apparatus according to claim 28, wherein,
said refrigerant passage is formed such that the refrigerant flows from said inflow communicating portion toward said outflow communicating portion, and said condensing fin is formed in a wavy shape to extend in a direction where the refrigerant flows.
- 31. A cooling apparatus according to claim 28, wherein said refrigerant passage is formed such that the refrigerant flows from said inflow communicating portion toward said outflow communicating portion, and
said slits are formed at a different positions from each other in said condensing fin with respect to a direction where the refrigerant flows.
- 32. A cooling apparatus according to claim 28, wherein,
said radiator is formed by joining a plurality of plate-shaped members each having a joined portion, and said joined portion is formed by bending said plate-shaped member to be elevated.
- 33. A cooling apparatus according to claim 28, wherein,
said refrigerant passage has a bottom surface therein, and said bottom surface is inclined from said inflow communicating portion toward said outflow communicating portion.
- 34. A cooling apparatus, boiling and condensing refrigerant, for cooling a high-temperature medium, said cooling apparatus comprising:
a refrigerant tank for containing refrigerant to be vaporized by heat transferred from said high-temperature medium; and a radiator communicated with said refrigerant tank to condense the gaseous refrigerant vaporized in said refrigerant tank into the liquid refrigerant; wherein said radiator includes:
an inflow communicating portion formed on an inlet side of the refrigerant, into which the refrigerant flows; an outflow communicating portion formed on an outlet side of the refrigerant, from which the refrigerant flows out; a refrigerant passage disposed to be inclined from substantially the horizontal and having a plurality of small passages formed vertically, for interconnecting said inflow communicating portion and said outflow communicating portion, said small passages being provided with a plurality of openings to drop the condensed liquid refrigerant into a lower small passage.
Priority Claims (6)
Number |
Date |
Country |
Kind |
08-57359 |
Mar 1996 |
JP |
|
08-57360 |
Mar 1996 |
JP |
|
08-198644 |
Jul 1996 |
JP |
|
08-334094 |
Dec 1996 |
JP |
|
09-6255 |
Jan 1997 |
JP |
|
08-218184 |
Aug 1996 |
JP |
|
CROSS REFERENCE TO THE RELATED APPLICATIONS
[0001] This application is based on and claims priority of Japanese Patent Application Nos. Hei. 8-57359 filed on Mar. 14, 1996, Hei. 8-57360 filed on Mar. 14, 1996, Hei. 8-198644 filed on Jul. 29, 1996, Hei. 8-218184 filed on Aug. 20, 1996, Hei. 8-334094 filed on Dec. 13, 1996, Hei. 9-6255 filed on Jan. 17, 1997, the contents of which are incorporated herein by reference.
Divisions (1)
|
Number |
Date |
Country |
Parent |
08818731 |
Mar 1997 |
US |
Child |
10237753 |
Sep 2002 |
US |