Degreasing system and degreasing method of heat exchanger

Abstract

The invention relates to the field of air or gas supply or control devices for drying solids. A degreasing system comprises an air inlet unit, a grease processing unit and an air blowing device. Theair inlet unit comprises an air heating device, the air inlet unit is provided with a first connector, the grease processing unit is provided with a second connector, the air blowing device blows theair flow to the grease processing unit from the air inlet unit through the first connector and the second connector, when the degreasing system is used for degreasing a heat exchanger, the air blowingdevice blows the high-temperature high-pressure air into a heat exchange pipe from the air inlet unit, the high-temperature high-pressure gas brings volatile oil in the heat exchange pipe out to thegrease processing unit to be processed, according to the degreasing system, due to the fact that a box body for placing the heat exchanger is omitted, the degreasing system is small in occupied space,the degreasing system is particularly suitable for degreasing work of the large heat exchanger, in addition, compared with the prior art, the grease in the heat exchanger can be more rapidly blown out, and the degreasing efficiency is high.

Description

technical field [0001] The invention relates to the field of an air or gas supply or control device for drying solids, in particular to a degreasing system and a degreasing method for a heat exchanger. Background technique [0002] Air-conditioning heat exchangers need to use volatile oil to prevent equipment wear and tear during production and processing, but volatile oil is easy to cause ant nest corrosion on the heat exchanger and easily cause heat exchanger leakage. It is subjected to volatile oil drying and degreasing treatment. [0003] The existing technology mainly puts the heat exchanger into a special drying and degreasing container for degreasing. For example, the invention patent application with the publication number CN108613504A discloses a workpiece degreasing device, which includes an air intake pipeline, a heating degreasing box and an exhaust gas The treatment device, the heat exchanger is placed in the heating and deoiling box, the air intake pipeline is...

AI Technical Summary

Problems solved by technology

[0005] On the other hand, the drying and degreasing rate of the prior art is low, and it is impossible to quickly degrease the inside of the heat exchanger, resulting in the heat exchanger being in a high-temperature environment for a long time, and heating and drying the heat exchanger for a long time is likely to cause the heat exchanger tube to break down. High temperature oxidation, causing quality problems of heat exchangers

[0006] On the other hand, because the degreasing device of the prior art needs to place the heat exchanger in it, the degreasing device of the prior art has a large volume and takes up a large space, especially for the heat exchanger used for large air conditioners. There are the following problems:

[0007] 1. The length, width, and height dimensions of some super-large air-conditioning heat exchangers exceed the size limit of ordinary drying and degreasing containers, and cannot be degreased in the drying and degreasing machine;

[0008] 2. The ultra-large air-conditioning heat exchanger has a large size, less demand, and low output. If a drying and degreasing container of the corresponding size is specially designed or purchased for it, the corresponding drying and degreasing device has (1) a large footprint; (2) ) high purchase and maintenance costs; (3) low utilization rate (if it is used for the production of small heat exchangers, because the internal space is too large, it is easy to cause serious heat loss and increase production costs);

[0009] 3. The heat exchange tubes of super-large air-conditioning heat exchangers are often longer, and it is more difficult to degrease inside the heat exchange tubes. If the drying and degreasing method of the prior art is used, it is more likely to cause high-temperature oxidation of the heat exchange tubes;

[0010] 4. The super-large air conditioner heat exchanger is heavy (more than 150kg), which causes the heat exchanger to be inconvenient to carry

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