CN201323074Y

CN201323074Y - Direct-current variable-frequency enameled wire

Info

Publication number: CN201323074Y
Application number: CNU2009200965644U
Authority: CN
Inventors: 储翔; 谷皖桂; 张维
Original assignee: Tianjin Jingda Rea Special Enamelled Wire Co Ltd
Current assignee: Tianjin Jingda Rea Special Enamelled Wire Co Ltd
Priority date: 2009-04-29
Filing date: 2009-04-29
Publication date: 2009-10-07
Anticipated expiration: 2019-04-29

Abstract

The utility model provides a direct-current variable-frequency enameled wire. The cross section structure of the enameled wire is composed of a copper core, a PEI insulating layer, a PAI insulating layer and a lubricating layer of the enameled wire. The thicknesses of the PAI insulating layer and the PEI insulating layer are respectively 30-45 percent and 50-65 percent of the thickness of the overall coat. Compared with common enameled wires, the utility model has the advantage that the softness, surface lubricity, wearing capacity and the like of the DC enameled wire are improved greatly, thereby decreasing damages caused by equipment during winding and greatly mitigating potential risk that the winding loops are pinked during the operation of compressors. Furthermore, the direct-current variable-frequency enameled wire can perfectly meet the requirements of enameled wires used in direct-current variable-frequency compressors.

Description

DC variable frequency enameled wire

Technical field

The utility model relates to a kind of a kind of DC variable frequency enameled wire that is suitable for the DC frequency converting air-conditioner compressor special use.

Background technology

In order to respond actively the upgrading of air-conditioning efficiency standard, each big Air-conditioning Enterprise is adjusted the product mix one after another, releases energy-conserving product.Multiple advantages such as concerning air conditioner, frequency conversion is an effective outlet that improves efficiency, and convertible frequency air-conditioner will progressively substitute fixed frequency air conditioner, and that convertible frequency air-conditioner has is energy-conservation, cooling and warming fast, constant temperature, quiet, suitable voltage range are wide.

In order to adapt to the demand in convertible frequency air-conditioner market, it is frequency-changeable compressor that the cardia of air-conditioning---compressor also will and be made the transition by traditional invariable frequency compressor, wherein representative is exactly DC frequency-changeable compressor, the main feature of DC frequency-changeable compressor is exactly that volume is little, the copper cash consumption is few, the efficiency height.DC frequency-changeable compressor also proposes higher requirement to the performance of used enamelled wire simultaneously, if use the conventional variety enamelled wire, the compressor coil that turns to is when carrying out electric performance test, very high turn-to-turn electric discharge phenomena all appear, finally can cause compressor to burn, can't satisfy instructions for use because of short circuit.

Summary of the invention

At structural deficiency in the prior art, the purpose of this utility model provides a kind of DC variable frequency enameled wire, to satisfy the special coiling requirement of DC frequency-changeable compressor to enamelled wire, reaches the performance index to enamelled wire.

For achieving the above object, the technical solution adopted in the utility model provides a kind of DC variable frequency enameled wire, and wherein: the cross-sectional structure of this enamelled wire from inside to outside is followed successively by copper core, PEI insulating barrier, PAI insulating barrier, enamelled wire lubricating layer.

The thickness of PAI insulating barrier is the 30%-45% that accounts for total coating layer thickness.

The thickness of PEI insulating barrier is the 50%-65% that accounts for total coating layer thickness.

Effect of the present utility model is that this DC variable frequency enameled wire is for the conventional variety enamelled wire, the DC enamelled wire has had bigger improvement in aspect performances such as flexibility, surface lubrication and resistance to wears, reduced that equipment greatly reduces the breakdown potential risk of compressor winding coil in operation process to the damage of enamelled wire in the coiling process.Can satisfy the requirement of the used enamelled wire of DC frequency-changeable compressor fully.

Description of drawings

Fig. 1 is a DC variable frequency enameled wire cross section structure schematic diagram of the present utility model.

Among the figure:

1, enamelled wire lubricating layer 2, PAI insulating barrier

3, copper core 4, PEI insulating barrier

Embodiment

Reaching embodiment in conjunction with the accompanying drawings is illustrated DC variable frequency enameled wire structure of the present utility model

As shown in Figure 1, rheology of the present utility model is enamelled wire frequently, and the cross-sectional structure of this enamelled wire from inside to outside is followed successively by copper core 3, PEI insulating barrier 4, PAI insulating barrier 2, enamelled wire lubricating layer 1.PAI is meant polyamidoimide insulating varnish, and PEI is meant polyester-imide insulating varnish.

The thickness of PAI insulating barrier 2 is the 30%-45% of total coating layer thickness, and the thickness of PEI insulating barrier 4 is the 50%-65% of total coating layer thickness.

DC variable frequency enameled wire structure of the present utility model is achieved in that

Analyze from the performance of insulating varnish, the resistance to wear of the polyamidoimide of table lacquer-PAI insulating barrier 2 is better than the polyester-imide of priming paint-PEI insulating barrier 4, change the thickness proportion of priming paint and table lacquer, suitably raising table lacquer occupies ratio, in order effectively to improve its scratch resistance, table lacquer occupying ratio and need bring up to more than 30% in insulating barrier.General compressor probably accounts for about 1/6 of whole thickness with the table lacquer thickness of enamelled wire.After tested, after table lacquer thickness improved, the reciprocating type lacquer performance of scraping had nearly improved 170%.

DC variable frequency enameled wire also abbreviates the DC enamelled wire as, by following DC enamelled wire and the contrast of ordinary lines test data, finds out the superior of its performance, sees the following form:

Φ0.80mm Q(ZY/XY)-2/200)

Performance index	Standard value	Ordinary lines	The DC line
Performance index	Standard value	Ordinary lines	The DC line	Percentage elongation	28％	41	46％
Springback angle	43	36	33	Percentage elongation	28％	41	46％
Springback angle	43	36	33	Low stress	0.100％	0.108％	0.181％
Confficient of static friction	＜0.1	0.060～0.10	0.050～0.065	Low stress	0.100％	0.108％	0.181％
Confficient of static friction	＜0.1	0.060～0.10	0.050～0.065	Reciprocating type scratch resistance (returning)	80/40	124/98	340/232

With Φ 0.80mmDC enamelled wire is example.

Claims

1, a kind of DC variable frequency enameled wire is characterized in that: the cross-sectional structure of this enamelled wire from inside to outside is followed successively by copper core (3), PEI insulating barrier (4), PAI insulating barrier (2), enamelled wire lubricating layer (1).

2, DC variable frequency enameled wire according to claim 1 is characterized in that: the thickness of PAI insulating barrier (2) is the 30%-45% that accounts for total coating layer thickness.

3, DC variable frequency enameled wire according to claim 1 is characterized in that: the thickness of PEI insulating barrier (4) is the 50%-65% that accounts for total coating layer thickness.