SU1705692A1 - Device for heat protection of objects - Google Patents

Abstract

The invention relates to heat engineering and can be used for thermostating and thermal protection of objects. In order to improve the manufacturability, the spacer elements are fixed in the outer chamber 2. A part of the walls of the inner chamber 1 is made in the form of membranes 6. having corrugations 7 made of material with a shape memory effect at the points of connection with the distancing elements. This allows to simplify the design of the seal of the hermetic cavity and increase its reliability, 1 Il.

Description

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The invention relates to heat engineering and can be used for thermostatting and thermal protection of objects.

Devices are known for thermal protection of objects, for example, climate chambers, containing equidistant inner and outer walls forming a cavity in which heat-conducting plates are fixed on the outer surface of the inner wall.

The inner and outer walls of such devices are fixed relative to each other and therefore the cavity between them is easily sealed.

However, such devices have a large thermal inertia due to the fact that the heat flux from the inner wall to the outer one passes through the entire length of heat-conducting plates.

The closest to the present invention is a device for thermal protection of objects, containing inner and outer chambers, forming an airtight cavity between them, about which temperature-sensitive elements are installed in the bellows of the material with shape memory, connected to the holes in the bottom wall internal camera.

The disadvantage of such a device is the presence of inner and outer chambers that are movable relative to each other, which makes it difficult to seal the cavity between them at the installation site of the loading hatch and is thermostatically controlled; objects.

The purpose of the invention is to improve the manufacturability.

The goal is achieved by those. that the spacer elements are installed in the outer cameo “its. sdvmzhno, and part of the walls of the internal uszm - p; made in the form of membranes, having in their joints with spacer elements corrugations of material with a shape memory effect.

This greatly simplifies sealing the cavity between the chambers at the place of installation of the hatch for loading thermostatically controlled objects, since in this place the walls of the chambers are stationary relative to each other. This simplifies the design of the device and improves manufacturability.

The drawing schematically shows the proposed device, a general view, a section.

The device contains inner 1 and outer 2 chambers, forming an airtight cavity 3 between them. Outer chamber 2 contains stationary spacer elements containing a frame 4 fixed with heat insulating bars 5. Part of walls 6 of the inner chamber is made in the form of a membrane fixed on frame 4 the edges of which are provided with corrugations 7.

made of material with shape memory.

The sealing of the cavity 3 in the area of the hatch 8 for the loading of thermostatic objects is carried out by means of a sleeve 9 fixed between the fixed walls 10 and 11.

The device works as follows.

As the temperature inside chamber 1 rises above the allowable, the corrugated peripheral part 7 of the walls straightens and presses them against the walls of the outer chamber 2 (shown by dotted lines). Heat from the inner chamber is vented through the wall to the outside. When

the temperature of the inner chamber will drop to the desired value, the corrugated part of the 7 walls will take its original shape and the walls 6 will take their original position. Heat transfer between the chambers will cease.

Thus, the proposed device allows to significantly simplify the design of the seal of the sealed cavity and increase its reliability, since the fixed ones are sealed relative to each other.

friend items.

Claims (1)

Invention Formula A device for thermal protection of objects, containing an inner and an outer chamber, installed one inside the other by means of spacing elements to form an airtight cavity between them, characterized in that, in order to increase the manufacturability, spacing elements are fixed in the outer chamber the walls of the inner chamber are made in the form of membranes having, at their junctions with the spacer elements, corrugations of a material having a shape memory effect.