Evaporation chamber for a loop heat pipe

• US 6,892,799 B2
• Filed: 08/05/2002
• Issued: 05/17/2005
• Est. Priority Date: 08/09/2001
• Status: Expired due to Fees

• Current Assignee: Microway Incorporated
• Original Assignee: Boris Revoldovich Sidorenko
• Inventors: Sudakov, Roman Grigoryevich, Maydanik, Yury Folyevich, Vershinin, Sergey Vasilyevich
• Primary Examiner(s): MCKINNON, TERRELL L
• Application Number:
  US10/486,268
• Publication Number:
  US 20040206480A1
• Time in Patent Office: 1,016 Days
• Field of Search: 165/104.26, 165/104.33, 165/104.21, 165/911, 165/80.4, 165/185, 361/700, 174/15.2, 257714-716
• US Class Current: 165/104.26
• CPC Class Codes: F28D 15/043 forming loops, e.g. capillary pumped loops

Abstract

The invention relates to heat engineering, in particular to heat pipes and can be used for removing heat from miniature high-heat object, in particular elements of radiotechnical instruments and computers requiring efficient removal of heat and minimum dimensions of a cooling system, the aim of said invention is to increase the heat load of an evaporation chamber at a predetermined temperature and to reduce the dimensions thereof. The inventive evaporation chamber for a loop heat pipe comprises a body having a side and an end wall and a capillary-porous orifice provided with steam-outlet channels and arranged inside said chamber. Said steam-outlet channels are united with the aid of a steam header and disposed on the part of the orifice perimeter of the side of a heat sink. Said evaporation chamber is also provided with an asymmetric hold offset in a direction opposite with respect to the heat sink. The ends of the steam-outlet channels are embodiment in such a way that they are dead on one side thereof. The asymmetric hole is also embodiment in such a way that it is dead on the side thereof which is opposite to the dead ends of the steam-outlet channels, the steam header being formed by one wall of the body and the end of the orifice.

Claims

1. An evaporating chamber of a loop heat pipe, comprising a body that includes a side and an end-face walls and a capillary porous packing accommodated in said body and having vapor-removal channels tied together by a vapor collector and disposed on a portion of the packing perimeter at the heat-supply side, and also having an asymmetrical longitudinal opening shifted in the direction opposite to the heat-supply side, the end-face of the vapor-removal channels on one side being blind, characterized in that the asymmetrical longitudinal opening is implemented also as being blind at the side opposite to the blind end-faces of the vapor-removal channels, and the vapor collector is defined by one of the end-face walls of the body and the packing end-face.

2. The evaporating chamber according to claim 1 characterized in that additional vapor-removal grooves are provided on the inner lateral surface of the body.

3. The evaporating chamber according to claim 1 characterized in that the cross-section of the asymmetrical longitudinal opening has the form of a rectangle elongated towards the heat supply and limited at the opposite side by the body wall.

4. The evaporating chamber according to claim 1 characterized in that the cross-section of the asymmetrical longitudinal opening has the form of a wedge whose apex faces the heat supply, and whose base is the body wall.

5. The evaporating chamber according to claim 1 characterized in that cross-section of the asymmetrical longitudinal opening has the form of a segment whose chord faces the heat supply, and the arc is a body wall.

6. The evaporating chamber according to claim 1 characterized in that cross-section of the asymmetrical longitudinal opening has the form of a circle limited by a capillary porous packing and whose center is shifted in the direction opposite to the heat supply.

7. The evaporating chamber according to claim 1 characterized in that cross-section of the evaporating chamber is implemented as being rectangular, and the asymmetrical longitudinal opening, which has the form of a slot gap, is shifted in the direction opposite to the heat supply.

8. The evaporating chamber according to claim 1 characterized in that the capillary porous packing consists of two interconnected parts.

9. The evaporating chamber according to claim 1 characterized in that the outlet of the condensate line is positioned in the asymmetrical longitudinal opening of the capillary porous packing.