Heat pipe using tubular fibre-optic structures

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to devices for removing heat from electronic components with high heat dissipation, particularly heat pipes, and can be used in the electronics industry. A heat pipe using tubular fibre-optic structures, the inner side surface of which is lined with tubular optical glass fibres, and the coolant used inside said pipe is a volatile liquid. Use of the volatile liquid (alcohol) as a coolant intensifies heat exchange in the heat pipe via phase transition, thereby creating conditions for controlling temperature of the cooled object.

EFFECT: facilitating movement of liquid from a condensation area to an evaporation area and removing heat radiation from a cooled object.

2 dwg

 

The invention relates to a device for heat dissipation from the electronics components with high heat capacity, in particular to the heat pipes, and can be used in various fields of electronic industry.

Closest to the invention on the achieved result is a heat pipe [1, 2], consisting of a sealed hollow cylinder, the inner surface of which is lined with a capillary-porous structure, saturated wetting liquid. Capillary-porous structure may be a metal mesh, sintered beads, metallosalen, fiberglass and even the system of grooves on the inner surface of the housing. The wetting liquid is cooled, and depending on the temperature level in the heating zone are selected liquid metals, mercury, ammonia, water, acetone, alcohol, freon, etc.

The lack of heat pipe can be considered inefficient allocation of infrared radiation, and low accuracy temperature in case of using a heat pipe for cooling a powerful thermally loaded components of electronic equipment.

The objective of the invention to improve heat transfer in the heat pipe by applying a tubular fiber structures.

To solve this problem is proposed heat pipe based on the use of tubular about tolokonin structures. According to the invention, the inner side surface of the heat pipe is lined with a tubular optical glass fibers, and the refrigerant inside the heat pipe is used legisprudence liquid.

The device is implemented as follows.

The heat pipe is made of quartz glass in the form of a cylindrical tank whose base is a flat surface, and the opposite side of the vessel is in the form of glass radiator. In the manufacture of the heat pipe inner side surface in the direction from the base to the heatsink spread the tubular fiber structure, which is saturated with the wetting fluid. As the wetting liquid used legisprudence liquid (alcohol).

Figure 1 shows the scheme of the heat pipe 2 cooling chip Assembly 1. In the process of heat removal from the chip Assembly 1 in the area of the evaporation temperature of the liquid 6 increases and it begins to evaporate. The pair reach the radiator 3 (condensation zone) and are condensed. The resulting liquid 6 through the tubular fiber structure 4 flows back to the evaporation zone. Thus, there is a continuous transfer of heat 5 from the evaporation zone to the condensation zone. At the same time on the tubular fiber structure 4 is diverted infrared from the teachings from 7 microassembly 1.

Figure 2 shows a fragment of a tubular fiber structure. Here is shown the direction of the fluid 1 and the direction of the infrared radiation 2.

The use of legisprudence liquid (alcohol) as a refrigerant allows to intensify the heat transfer in the heat pipe due to the phase transition, creating the conditions for temperature control of the cooled object. Modifying characteristics of the refrigerant can be adjusted, the process of heat transfer, increasing or slowing down as necessary. And the use of tubular fiber structure provides not only the flow of fluid from the condensation zone to the evaporation zone, but also allows you to take infrared radiation from the cooled object.

The developed device was used for cooling computer CPU (Pentium IV). Tests showed acceptable performance characteristics of application of the developed heat pipe for cooling and temperature control of the processor.

Literature

1. Pat. 3229759 (USA). Evaporation - condensation heat transfer device / G.M.Grover. - Publ. 1966.

2. Alekseev V.A., Aref, VA Heat pipes for cooling and temperature control of electronic equipment. - M.: Energy, 1979. - 128 S.

Heat pipe with the use of tubular fiber structures, which is a cylindrical vessel made of to arciaga glass, the basis of capacity, flat surface, is the evaporation area and the opposite side of the vessel, the condensation zone, is a quartz glass heat sink, characterized in that the inner side surface of the vessel is lined with a tubular optical glass fibers, and as a refrigerant is used legisprudence liquid.



 

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