RU2233569C2 - Device for temperature stabilization of high heat transfer components of radio-electronic equipment - Google Patents

Abstract

FIELD: electronics; controlling temperature conditions for high heat transfer components of radio-electronic equipment.

SUBSTANCE: heat-exchanger carrying cooling liquid follows shape of ridge outline and main thermoelectric battery is connected to its base with good thermal contact through heat-transfer junction; battery heat-transfer junction is connected to heat sink. Heat exchanger sections forming gaps between ridge teeth are in thermal contact with heat-absorbing junctions of additional thermoelectric batteries whose heat-transfer junctions are joined with heat sinks. Tops of ridge teeth and three fourth of their ribs are disposed in thin-walled metal container holding working medium. Radio-electronic equipment component is mounted on container.

EFFECT: augmented heat-transfer and enhanced reliability of temperature stabilization.

1 cl, 1 dwg

Description

The invention relates to electronics and can be used to provide the required thermal regimes of elements of electronic equipment (CEA) with high heat.

The prototype of the proposed device is the device described in [1]. The device contains a thin-walled metal container with a melting working substance, the lid of which is made in the form of a flat surface, on the inside of which there are metal pins immersed in the melting working substance, and with an external CEA element, a heat exchanger, which is a thin-walled metal tube through which a cooling pipe flows liquid. That part of the heat exchanger, which is located in the container with the melting working substance, is made in the form of a spiral surrounding the metal pins of the lid with a gap between the tube and the pin of 10-15 mm. The fluid flows through the heat exchanger by means of a supercharger, and the fluid is cooled by a thermoelectric battery powered by an electric energy source.

The disadvantage of this device is that as the fluid flows through the heat exchanger, its temperature constantly increases due to the absorption of heat emanating from the working substance, and at the outlet of the heat exchanger the temperature of the liquid is very significantly higher than its temperature at the inlet to the heat exchanger. A temperature gradient occurs along the length of the heat exchanger, the presence of which leads to a decrease in the intensity of heat removal from the working substance and to a decrease in the reliability of the thermostabilizing device.

In order to increase the intensity of heat removal from the container with a melting working substance, and, consequently, the reliability of the heat-stabilizing device, the design shown in Fig. 1 is proposed.

The device comprises a thin-walled metal container 1 with a working substance 2, on which an REA 3 element is installed, a heat exchanger 4, made in the form of a thin-walled metal tube through which coolant flows. The heat exchanger repeats the shape of the ridge contour, to the base of which a thermoelectric battery 5 is connected with its heat-absorbing junction with a good heat contact junction, the heat-generating junction of which is connected to the radiator 6, and the teeth are partially placed in a thin-walled metal container 1 with a working substance 2, so that in the container there are apex and three quarters of the edges of the teeth. The sections of the heat exchanger 4, forming the gaps between the teeth of the ridge, are brought into thermal contact with the heat-absorbing junctions of the additional thermoelectric batteries 7, the hot junctions connected to the radiators 8. The fluid flows through the heat exchanger by means of a supercharger 9. The main 5 and additional 7 thermoelectric batteries are supplied with a direct current source . To minimize the effect of fluctuations in ambient temperature, thermal insulation 10 is used.

The device operates as follows.

The heat coming from the CEA element 3 is transferred to a thin-walled metal container 1 and through the contact surface to the working substance 2. Then, at the same time, the working substance 2 is heated to the melting temperature and the melting process. When melting the working substance 2, the temperature of the thin-walled metal container 1 and, accordingly, the temperature of the CEA 3 element will be maintained at a constant value equal to the melting temperature of the working substance 2. At the same time, the liquid flowing through the heat exchanger 4 cooled by the main 5 and additional 7 thermoelectric batteries will not give the worker substance 2 to melt completely, thereby preserving the necessary temperature regime of the CEA 3 element for an arbitrarily long time. Radiators 6 and 8 are used to remove excess heat from fuel junctions of the main 5 and additional 7 thermoelectric batteries.

The use of additional thermoelectric batteries 5 eliminates the disadvantage associated with a decrease in the intensity of heat removal from the working substance 2 by the fluid flowing in the heat exchanger 4. Additional thermoelectric batteries 6 provide additional intermediate cooling of the flowing fluid, which virtually eliminates the temperature gradient along the length of the heat exchanger 4 and increases the amount of heat removed by the coolant, as well as the reliability of the thermostabilizing device.

Literature

1. Pat. 2180161, Н 05 К 7/20, Н 01 L 23/34 Device for thermal stabilization of elements of electronic equipment with high heat dissipation. / O.V. Evdulov, T.A. Ismailov, Sh.A. Yusufov, G.I. Aminov (RF), No. 2000123232; Claim 09/07/2000; Publ. 02/27/2002, Bull. No. 6.

Claims (1)

A device for thermal stabilization of elements of electronic equipment with a high level of heat generation, containing a thin-walled metal container with a working substance having a stable melting temperature, which coincides with the static temperature of the element of electronic equipment placed on it, and the heat exchanger inside it, made in the form of a metal tube through which flows by means of a supercharger, a cooling liquid, characterized in that the heat exchanger repeats the shape of the ridge contour to the base the main thermoelectric battery is connected with its heat-absorbing junction, the heat-releasing junction is brought into thermal contact with the radiator, and the teeth of which are partially placed in a thin-walled metal container with the working substance, so that the top and three quarters of the tooth edges are in the container, sections of the heat exchanger forming gaps between the teeth of the ridge are brought into thermal contact with heat-absorbing junctions of additional thermoelectric batteries, adjoint its heat-junctions with radiators; The main and additional thermoelectric batteries are powered by a direct current source.