Rapid dehumidifying method without dismounting product

Abstract

An embodiment of the invention provides a rapid dehumidifying method without dismounting a product. The method comprises the steps that thermal insulation is carried out on a temperature seal tank accommodating the product to the dehumidified; if the temperature stabilization time of the product is known, thermal insulation is carried out on the product according to the known temperature stabilization time, air pressure control is carried out synchronously in the period, and dehumidification is completed if the humidity in the temperature seal tank is stable when the thermal insulation time isreached; if the temperature stabilization time of the product is unknown, thermal insulation and low pressure control are carried out on the temperature seal tank according to a predetermined thermalinsulation grade table, the humidity in the temperature seal tank is determined, and dehumidification is completed if the humidity is stable; and if the humidity is not stable, thermal insulation isnot stopped till the temperature is stable, and then dehumidification is completed. The principle that air flows from high air pressure to low air pressure in the same height is used, the internal ofthe product is dehumidified in the high-temperature low-pressure environment without dismounting the product.

Description

technical field [0001] The present application relates to the field of product dehumidification, in particular to a method for rapid dehumidification in a temperature and pressure box using a high-temperature and low-pressure environment without dismantling the product. Background technique [0002] Aerospace equipment and its sub-systems and equipment have high reliability requirements. During the development and batch production of equipment, the control of the environment is particularly strict. It is difficult to avoid the intrusion of moisture. [0003] For the intrusion of moisture into the equipment, the conventional dehumidification method is high-temperature dry air blowing or natural air drying, but this method is difficult to discharge the moisture inside the product without dismantling the product, so the product is usually disassembled Afterwards, carry out high-temperature dry air blowing or natural air drying. However, this disassembly will bring other additi...

AI Technical Summary

Problems solved by technology

[0002] Aerospace equipment and its sub-systems and equipment have high reliability requirements. During the development and batch production of equipment, the control of the environment is particularly strict. Difficult to avoid moisture intrusion

[0003] For the intrusion of moisture into the equipment, the conventional dehumidification method is high-temperature dry air blowing or natural air drying, but this method is difficult to discharge the moisture inside the product without dismantling the product, so the product is usually disassembled Afterwards, carry out high-temperature dry air blowing or natural air drying. However, this disassembly will bring other additional work, such as reassembly, supplementary screening, product calibration, etc. According to conventional screening tests, the supplementary screening time of a product It takes at least 48 hours, and the calibration time is related to the product. For example, the calibration of a seeker takes 3-5 days. Therefore, moisture will definitely affect the development cycle and cost of the equipment.

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