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Cooling apparatus boiling and condensing refrigerant with a refrigerant vapor passage having a large cross sectional area

  • US 6,874,567 B2
  • Filed: 02/06/2004
  • Issued: 04/05/2005
  • Est. Priority Date: 10/25/2001
  • Status: Expired due to Fees
First Claim
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1. A cooling apparatus boiling and condensing refrigerant comprising;

  • a refrigerant container which has a heat-generating member attached to a bottom surface therefore and which reserves therein refrigerant which can be boiled by receiving heat from said heat-generating member, a heat radiating portion having a plurality of tubes, which are connected to the inside of the refrigerant container and are provided substantially upright on an upper surface of said refrigerant container, and a header tank by which the plural tubes are communicated;

    wherein the refrigerant reserved in said refrigerant container can be boiled and evaporated by receiving heat from said heat-generating member and can be used to cool the heat-generating member by radiating latent heat of the refrigerant vapor from said heat radiating portion; and

    wherein assuming that a portion of the upper surface of the refrigerant container on which a mounting portion of the heat-generating member is projected is referred to a boiling area, at least a tube of the plurality of tubes located within said boiling area has a passage defined by a lower end opening portion connected to the refrigerant container and has a cross sectional area of the passage larger than that of the tube located outside the boiling area.

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