RU2213436C2 - Device for cooling down radio equipment components intermittently releasing heat - Google Patents

Abstract

FIELD: radio electronics; radio components intermittently releasing heat. SUBSTANCE: augmented cooling-down and hardening process of working medium during idle period of radio equipment component is effected by means of thermoelectric battery. Device has thin-walled metal tank filled with working medium whereon heat-releasing radio equipment components are mounted so as to ensure reliable thermal contact. Thermoelectric battery has its first junction soldered to opposite side of metal tank and its second junction is brought in thermal contact with atmosphere- communicating heat sink. Thermoelectric battery is connected by means of electrical conductors to power accumulator through control device. EFFECT: provision for unlimited idle periods of radio equipment components. 1 cl, 1 dwg

Description

 The invention relates to electronics, in particular to the field of cooling elements of electronic equipment (CEA), operating in a mode with intermittent heat release.

 At present, one of the effective means of heat removal from REA elements operating in the mode with repeated short-term heat releases is the use in devices for their cooling and thermal stabilization of melting working substances, which have a relatively high heat of phase transformations and reliable multiple reversibility of phase transformations [1, 2]. The most common type of such structures include structures in which the cooled REA elements are located outside the volume with the working melting substance on a flat surface separating the sealed enclosure and have good thermal contact with it [1]. Usually, powerful transistors, diodes, various types of integrated circuits, separate electronic devices and devices are installed on the thermostabilized surface of the device. In this case, both the outer and inner surfaces of the sealed enclosure may have fins to enhance heat transfer, respectively, with the working substance and the environment. During operation of REA, the bulk of the heat dissipated by it is absorbed due to the latent heat of fusion of the working substance. After the end of the operation of the equipment, the working substance cools and solidifies due to heat exchange with the environment.

 An important feature of this type of cooling device is the significant prevalence of the interval between switching on the equipment over the operating time of the REA element in the "peak" mode, which is a significant drawback if it is necessary to remove heat from the REA element with a slight interruption time.

 To eliminate this drawback, a device is proposed, the design of which is shown in the drawing.

 The device consists of a thin-walled metal container 1 filled with a working substance 2, on which REA 3 fuel elements are installed to ensure good thermal contact. A thermoelectric battery (TEB) 4 is soldered to the opposite side of the metal container 1 and brought into thermal contact by its second with an air radiator 5. TEB 4 is connected through electric wires 6 through a control device 7 to an electric energy accumulator 8.

 The device operates as follows.

 During the cycle of operation of the REA element 3, the heat coming from it is transferred to the metal container 1 and through the contact surface to the working substance 2. The working substance 2 is heated to the melting temperature and the melting process. The temperature of the shell of the metal container 1 and, accordingly, of the CEA element 3 will not increase significantly compared to the melting temperature of the working substance 2, as long as there are both phases (solid and liquid). The fuel and energy complex 4 in the operation cycle of the CEA 3 element, due to the temperature difference between its first and second junctions, operates in the generator mode and energizes the electric energy accumulator 8. The process of energizing the electric energy accumulator 8 continues until the end of the operation of the CEA 3 element. After termination of the operation of the CEA 3 element the TEB 4 switches from the mode of the electric energy generator to the mode of the chiller. The fuel and energy complex 4 is powered by the electric energy accumulator 8. The process of switching the thermopile 4 from the mode of the electric energy generator to the chiller mode is carried out by the control device 7.

 The cooling of the working substance 2 and its hardening in the pause of the operation of the CEA 3 element is carried out due to the heat removal of the thermopile 4, operating in the refrigeration machine mode. The decrease in the solidification time of the working substance 2 is achieved by increasing the intensity of the heat sink.

Literature
1. Alekseev V.A. Cooling of electronic equipment using melting substances. - M .: "Energy", 1975.

 2. Dulnev G.N. Heat and mass transfer in electronic equipment. - M .: "Higher School", 1984.

Claims (1)

 A device for cooling elements of electronic equipment with intermittent heat release, containing a thin-walled metal container filled with a melting working substance, characterized in that it is equipped with a thermoelectric battery, first we put it into thermal contact with the metal capacity from the side opposite to the location of the element of electronic equipment, and the second - with a radiator operating in the mode of an electric current generator during the cycle of operation of the radioelectric element constant and apparatus in chiller mode, suspend the item of electronic equipment, the switching process of the thermoelectric battery from the electric power generator mode in chiller mode is performed by the control apparatus.