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Plate-type pulsating heat pipe with double-side grooves

A pulsating heat pipe and double-sided groove technology, which is applied in heat exchange equipment, indirect heat exchangers, lighting and heating equipment, etc., can solve the problems that the application of pulsating heat pipes has not been paid enough attention, and the mechanism of pulsating heat transfer has not been uniformly explained. To achieve the effect of improving the uniformity of internal working fluid distribution and heat transfer, good heat transfer ability and good contact

Inactive Publication Date: 2011-07-13
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the high-efficiency heat transfer characteristics of pulsating heat pipes have been generally recognized, due to the fact that the research on the mechanism of pulsating heat transfer has not yet formed a unified explanation, the scientific and technological circles still pay a lot of attention to theoretical discussions, but the application of pulsating heat pipes has not attracted enough attention.

Method used

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  • Plate-type pulsating heat pipe with double-side grooves
  • Plate-type pulsating heat pipe with double-side grooves
  • Plate-type pulsating heat pipe with double-side grooves

Examples

Experimental program
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Effect test

Embodiment 1

[0048] See attached figure 1 , 2 , 3, 4, the double-sided channel plate type pulsating heat pipe of the present invention comprises a shell 1 and a folded plate 2, the cross section of the shell 1 is a closed box with a rectangle; the folded plate 2 is composed of a periodic triangular shape The curved plate, the folded plate 2 is inserted in the shell 1, so that a plurality of pulsating channels 3 are formed between the folded plate 2 and the inner surface of the shell 1; the folded plate 2 The ribs are connected to the inner surface of the housing 1 through discontinuous spot welding spots 4, so that the adjacent channels are connected by micro seams 5; the housing 1 is closed, vacuumized and filled with distilled water as a working medium; The folded plate 2 is not flush with the ends 6 and 7 of the shell 1; the equivalent diameter of the pulsation channel 3 is 0.5-1mm; the shell and the folded plate are made of stainless steel; The length is 5-50 mm, and the width of the...

Embodiment 2

[0051] See attached Figure 5 , 6 , the double-sided channel plate type pulsating heat pipe of the present invention includes a housing 1 and a folded plate 2, the cross section of the housing 1 is a rectangular closed box; the folded plate 2 is a curved plate made of a periodic sine wave shape , the shell 1 and the folded plate 2 are integrally stretched or extruded, the folded plate 2 is in the shell 1, and the gap between the folded plate 2 and the inner surface of the shell 1 A plurality of pulsating channels 3 are formed between them; the housing 1 is closed, vacuumized and filled with working fluid R123; the flap 2 is not flush with one end of the housing 1; the equivalent diameter of the channels is 0.5-3.5 mm; the shell and the folding plate are made of aluminum alloy.

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Abstract

The invention relates to a plate-type pulsating heat pipe with double-side grooves, comprising a casing and a bent plate. The cross section of casing is a rectangular closed box; the bent plate is a curved plate formed by a periodical winding shape, and the cross section of the bent plate is shaped like continuous triangles, or sinuidal or others periodic winding; the bent plate is inserted in the casing, and a plurality of pulsating grooves are formed between the bent plate and the inner surface of the casing, bent edges of the bent plate and the inner surface of the casing are connected through discontinuous spot welding, and slit communication is formed between the adjacent grooves; and the casing is closed, vacuumized and filled with working mediums. The plate-type pulsating heat pipe with the double-side grooves integrates the pulsating, flat plate, capillary and strengthening heat transfer and has excellent heat dissipation and cooling performances; the equivalent thermal conductive coefficient of the plate-type pulsating heat pipe with the double-side grooves is higher than that of an aluminum extruded heat radiator by more than two orders of magnitude and 2-3 times that of a related flat heat pipe; an excellent heat dissipation function is also provided by horizontal installation due to capillary grooves, and the application is facilitated. Therefore, the plate-type pulsating heat pipe with the double-side grooves is particularly suitable for heat dissipation and cooling of various chips and electronic components.

Description

Technical field [0001] The invention discloses a double-sided channel plate type pulsating heat pipe. It belongs to the technical field of heat exchange equipment. Background technique [0002] Electronic components such as chips in the electronic microelectronics field, thyristors, silicon controlled rectifiers, semiconductor light-emitting diodes (LEDs), and large-scale integrated circuits (LSLchips) in the electromechanical field are widely used in production and life. These chips and components generate a lot of heat when working, and must be dissipated in time to ensure safe and stable operation of the equipment. Research shows that the operating temperature of electronic components is generally -5 to +70°C. Beyond this range, for every 10°C increase in the temperature of a single semiconductor component, system reliability decreases by 50%. More than 55% of electronic equipment failures are due to excessive temperature. caused. It can be seen that the heat dissipati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D15/02F28F21/08H01L23/427
CPCF28D15/0266
Inventor 夏侯国伟
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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