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A method of assembling a thin film electric heater for an attitude control engine

An electric heater and assembly method technology, applied in electric heating devices, ohmic resistance heating, electrical components, etc., can solve the problems of unstable assembly quality and uneven thickness, and achieve the effect of preventing uneven thickness of glue

Active Publication Date: 2022-08-02
XIAN SPACE ENGINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem of the present invention is: to overcome the deficiencies of the prior art, and to provide a method for assembling the thin-film electric heater of the attitude control engine. Eliminated the shortcomings of GD414 glue thickness unevenness, many bubbles, and unstable assembly quality

Method used

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  • A method of assembling a thin film electric heater for an attitude control engine
  • A method of assembling a thin film electric heater for an attitude control engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1), place the thin-film electric heater 3 with an external dimension of 20mm×200mm on the backing plate 2, put the lead wire of the electric heater 3 into the groove processed by the backing plate 2, and press the electric heater with the pressing plate 1. 3. Apply GD414 glue 4 on the surface of the electric heater 3, and use a scraper to smooth the surface of the glue evenly. The thickness of the platen 1 is 0.8mm, which can ensure that the thickness of the GD414 glue applied on the surface of the electric heater 3 is 0.8mm and the thickness is uniform.

[0030] (2) After the electric heater is evenly leveled, take out the electric heater from the pressure plate and the backing plate, and start sticking after standing for 8-12 minutes. When sticking, stick one end to level first, and then press the fine gauze cloth with your hand to gently press the other end in turn. While pasting, catch the air bubbles, lightly press the surface of the piezoelectric heater, and past...

Embodiment 2

[0033] (1), place the thin-film electric heater 3 with an external dimension of 28mm×60mm on the backing plate 2, put the lead wire of the electric heater 3 into the groove processed by the backing plate 2, and press the electric heater with the pressing plate 1. 3. Apply GD414 glue 4 on the surface of the electric heater 3, and use a scraper to smooth the surface of the glue evenly. The thickness of the platen 1 is 0.5mm, which can ensure that the thickness of the GD414 glue applied on the surface of the electric heater 3 is 0.5mm and the thickness is uniform.

[0034] (2) After the electric heater is evenly leveled, take out the electric heater from the pressure plate and the backing plate, and start sticking after standing for 8-12 minutes. When sticking, stick one end to level first, and then press the fine gauze cloth with your hand to gently press the other end in turn. While pasting, catch the air bubbles, lightly press the surface of the piezoelectric heater, and paste...

Embodiment 3

[0037] (1), place the thin film electric heater 3 with an external dimension of 10mm×65mm on the backing plate 2, put the lead wire of the electric heater 3 into the groove processed by the backing plate 2, and press the electric heater with the pressing plate 1 3. Apply GD414 glue 4 on the surface of the electric heater 3, and use a scraper to smooth the surface of the glue evenly. The thickness of the platen 1 is 0.5mm, which can ensure that the thickness of the GD414 glue applied on the surface of the electric heater 3 is 0.5mm and the thickness is uniform.

[0038] (2) After the electric heater is evenly leveled, take out the electric heater from the pressure plate and the backing plate, and start sticking after standing for 8-12 minutes. When sticking, stick one end to level first, and then press the fine gauze cloth with your hand to gently press the other end in turn. While pasting, catch the air bubbles, lightly press the surface of the piezoelectric heater, and paste ...

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Abstract

The invention relates to a method for assembling a thin-film electric heater for an attitude control engine: the thin-film electric heater is placed in a backing plate, and pressed with a pressure plate of a certain thickness; The board will make the surface of the glue liquid evenly and evenly; stick it after standing for a period of time. When sticking, stick one end first, catch the air bubbles while sticking, lightly press the surface of the electric heater, and stick it flat; The fixing method is pressurized and cured. After curing, the auxiliary fixture is removed to clean the surface of the electric heater and the residual glue that is extruded. The invention effectively guarantees the uniformity of the coating thickness of the glue solution, can reduce the number of air holes in the glue solution, prevent the generation of large air holes, is convenient to operate, and improves the assembly efficiency and product quality of the electric heater.

Description

technical field [0001] The invention relates to a method for assembling a thin-film electric heater for an attitude control engine, in particular to a method for sticking the thin-film electric heater by using GD414 vulcanized silicone rubber glue. Background technique [0002] Thin-film electric heater is a device that implements active heating control in the thermal control subsystem of the spacecraft, and is widely used in the field of aerospace thermal management. Through research and communication, the electric heaters used by satellites usually adopt the method of applying glue GD414 liquid on the electric heaters by relying on manual operation experience. After the glue liquid is applied, the thickness is very thin (about 0.2mm). It is very thin, and the electric heater substrate fits well after pasting. For the electric heater used in the attitude control engine, due to the narrow space, a connector is added to the lead wire, and the diameter of the lead wire is inc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B3/20
CPCF16B11/006
Inventor 张华龙闫明辉李小刚赵小青姜传生刘涛杨华
Owner XIAN SPACE ENGINE CO LTD