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Varnished wire, manufacturing method of varnished wire, compressor comprising varnished wire and refrigeration device

A technology of refrigeration equipment and enameled wire, which is applied to mechanical equipment, machines/engines, liquid fuel engines, etc., and can solve problems such as inability to meet the working requirements of rotary compressors

Inactive Publication Date: 2014-01-15
GUANGDONG MEIZHI COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent can improve the oil resistance and cold medium resistance of the enameled wire to a certain extent, but it still cannot meet the working requirements of the rotary compressor with the characteristics of R32 refrigerant
[0005] Therefore, the current enameled wires, especially those suitable for R32 refrigerant compressors, still need to be improved.

Method used

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  • Varnished wire, manufacturing method of varnished wire, compressor comprising varnished wire and refrigeration device
  • Varnished wire, manufacturing method of varnished wire, compressor comprising varnished wire and refrigeration device
  • Varnished wire, manufacturing method of varnished wire, compressor comprising varnished wire and refrigeration device

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Embodiment 1

[0039] Embodiment 1: the preparation of enameled wire

[0040] Prepare enameled wire according to the method for preparing enameled wire of the present invention, concrete steps are as follows:

[0041] First, coat 17 layers of polyamide-imide insulating varnish on the outer surface of a copper wire with a diameter of 0.85 mm to form a polyamide-imide insulating varnish layer with a thickness of 0.021 mm to 0.039 mm;

[0042] Then, on the outer surface of the polyamide-imide insulating varnish layer, coat two layers of polyamide-imide insulating varnish added with self-lubricating agent to form self-lubricating insulation on the outer surface of the polyamide-imide insulating varnish layer paint layer.

[0043] Thus, the enameled wire of the present invention was prepared.

Embodiment 2

[0045] With existing enameled wire as contrast, according to the following method, the enameled wire of the present invention prepared in embodiment 1 is carried out quality inspection:

[0046] Seal 400ml of refrigerating machine oil and several enameled wire samples with a length of about 20cm in a dried airtight container with a volume of about 2L. After the airtight container is evacuated, R32 refrigerant is added to it until the pressure of the refrigerant in the airtight container reaches 4.0 at 95°C. MP (gauge pressure). Next, place the airtight container containing the enameled wire sample, refrigerant, and refrigerating machine oil at a temperature of 95°C for 48 hours. After cooling, take out the enameled wire sample and divide it into equal parts, and then place them at 130°C, 140°C, 150°C, 160°C, 170°C, and 180°C incubators, take them out after 10 minutes, and use the naked eye to observe the foaming conditions of the enameled wire samples treated in the incubators...

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Abstract

The invention discloses a varnished wire, a manufacturing method of the varnished wire, a compressor comprising the varnished wire and a refrigeration device. The varnished wire comprises wire bodies, a polyamide-imide insulation varnish layer and a self-lubricating insulation layer, wherein the polyamide-imide insulation varnish layer is formed on the outer surfaces of the wire bodies, and the self-lubricating insulation layer is formed on the outer surface of the polyamide-imide insulation varnish layer. The varnished wire has the remarkable oil resistance and the remarkable refrigerant resistance, the foaming temperature can be remarkably raised, and the varnished wire is suitable for the compressor, in particular to an R32 refrigerant compressor.

Description

technical field [0001] The invention relates to the field of electromechanical technology, in particular to an enameled wire and a preparation method thereof, a compressor and a refrigeration device including the enameled wire. Background technique [0002] In the existing hermetic compressors, the phenomenon of motor enameled wire yellowing often occurs. The main reason is that after the refrigerant penetrates into the enameled wire paint film of the motor, when the temperature of the motor or the ambient temperature around the motor rapidly rises to a certain temperature, it penetrates into the enameled wire paint film. The refrigerant will be actively volatilized, causing the paint layer of the enameled wire to swell, and small bubbles will appear. When the small bubbles become more and more large, the phenomenon of yellowing of the enameled wire of the motor we see will occur. Moreover, under high temperature and high pressure, the refrigerant is more likely to penetrate...

Claims

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Application Information

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IPC IPC(8): H01B7/02H01B7/28H01B13/16F04C29/00
Inventor 曲阳陈振华
Owner GUANGDONG MEIZHI COMPRESSOR
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