SU1439552A1 - Device for stabilizing temperature - Google Patents

Abstract

The invention relates to the field of heat engineering and can be used to stabilize the temperature of electronic devices. The purpose of the invention is to improve the accuracy of thermostatting by changing the heat exchange surface that is working efficiently in accordance with the temperature of the object being temperature-controlled.

Description

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The device for temperature stabilization contains a chamber 1 filled with a two-phase medium, a heat exchanger 5,; a tank 4 partially filled with liquid. In order to increase the accuracy of the thermostatting, the heat exchanger 5 and the chamber 1 filled with a two-phase medium are installed with a gap 6. The device is equipped with a sealed chamber. 3 filled with gas placed in the chamber 1 and successively communicated by means of capillaries 7 with the tank 4, 6 heat exchanger and chamber 1, as well as with the environment. Temperature change in the chamber,

filled with a two-phase medium and holding a temperature-controlled object 2, is accompanied by a corresponding change in the volume of gas in chamber 3 and, consequently, a change in the level of liquid in the gap 6 between the heat exchanger and the chamber filled with two-phase medium. At the same time, a change in the efficiently operating surface of the heat exchanger occurs, allowing the temperature in the chamber with a two-phase medium to change, which makes it possible to compensate for the change in temperature due to a change in the amount of heat removed by the heat exchanger. 1 il.

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The invention relates to heat engineering and can be used to stabilize the temperature of electronic devices.

The purpose of the invention is to improve the accuracy of temperature control.

The drawing shows a schematic diagram of the device.

The device for temperature stabilization contains a thermostatically controlled chamber 1 filled with a two-phase medium with a thermostatted object 2 placed inside it, and a hermetic chamber 3 filled with gas, a reservoir 4 partially filled with liquid, and a heat exchanger 5, a heat exchanger 5 and a chamber 1 are placed with a gap of 6, wherein the sealed chamber 3 is sequentially communicated by means of the capillaries 7 with the tank 4, the gap 6 and the environment or the bellows 8, for the convenience of filling the gap 6 and the tank 4 with liquid, and also for Breathing of the bellows 8 in cxeMie can be provided for vents-T1 and 9. The two-phase mixture is heated with the help of an electric heater 10, so that less heat loss to the ambient medium can be used,

The temperature stabilization device operates in the following way.

With an increase in temperature in the chamber 1, filled with a two-phase medium and containing a thermostatically controlled object

2, the volume of gas in the chamber 3 increases, as a result of which part of the liquid 4 is displaced from the reservoir 4 into the gap 6. In proportion to the temperature increases in the chamber 1, the effective working surface of the heat exchanger 5 contacts the surface of the chamber 1 through the liquid layer gap. Accordingly, the amount of heat removed by the heat exchanger from the chamber filled with a two-phase medium increases, which leads to a decrease in the temperature in the chamber with a two-phase medium, i.e. compensation for changes in its temperature. When the temperature in the chamber t decreases, respectively, the volume of gas in chamber 3 decreases, fluid is pulled from gap 6 into tank 4, and the effective surface of the heat exchanger 5 decreases. This leads to a decrease in the amount of heat removed by the heat exchanger from the chamber with a two-phase medium, t, e, increase the temperature in the chamber or its stabilization. At the same time, the temperature stability of the temperature-controlled object is provided with time stability of the temperature of the chamber with a two-phase medium in which the temperature-controlled object is located. The temperature change in the chamber filled with a two-phase medium occurs due to the thermal disturbance.

the balance between the amount of heat supplied to the two-phase mixture and the amount of heat removed from it. The characteristics of the heat exchanger 5, the volume of the chamber 3 and the size of the gap 6 can be chosen so that the change in the effective work of the heat exchange surface corresponding to the change in temperature in the chamber with a two-phase medium will fully compensate for the imbalance of heat fluxes. The initial position of the liquid level in the gap 6 can be adjusted by changing the height of the location of tank A or changing the amount of liquid in the tank. For convenience, the initial installation of the position of the liquid level in the gap 6 before starting the process of thermostating tank A and the gap 6 with the help of capillary tubes and valves can be communicated with the environment or with each other

Claims (1)

Invention Formula A device for temperature stabilization, containing a thermostatic chamber filled with a two-phase medium with an object installed in it, a reservoir partially filled with liquid, and a heat exchange device, which is In order to ensure the accuracy of the device, it is equipped with a sealed chamber filled with gas, installed in a thermostatic chamber and connected by means of a capillary with a tank partially filled with liquid, the heat exchanger and part of the thermostating chamber being installed relative to each other with a gap, a cavity which is associated with a reservoir, partially filled with liquid, and with the environment.