CN103514992A - Varnished wire, manufacturing method of varnished wire, compressor comprising varnished wire and refrigeration device - Google Patents
Varnished wire, manufacturing method of varnished wire, compressor comprising varnished wire and refrigeration device Download PDFInfo
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- CN103514992A CN103514992A CN201210398018.2A CN201210398018A CN103514992A CN 103514992 A CN103514992 A CN 103514992A CN 201210398018 A CN201210398018 A CN 201210398018A CN 103514992 A CN103514992 A CN 103514992A
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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
The present invention relates to mechanical & electrical technology field, particularly, relate to enamelled wire and preparation method thereof, comprise compressor and the refrigeration plant of this enamelled wire.
Background technology
Existing closed-type compressor, the normal motor enamel-covered wire yellowing phenomenon that occurs, its reason is mainly that refrigerant infiltrates after motor enamel-covered wire paint film, when the temperature of motor or motor ambient temperature are around rapidly heated to uniform temperature, the refrigerant that penetrates into enameled wire coat will enliven volatilization, makes the enamelled coating generation swelling of enamelled wire, occurs minute bubbles, when minute bubbles are more and more, increasing, will produce the motor enamel-covered wire yellowing phenomenon that we see.And under high temperature, high pressure, refrigerant is more easily penetrated into and causes motor enamel-covered wire foaming jaundice problem in the paint film of enamelled wire, and then causes motor burning, affects the normal use of motor.
Along with the reinforcement gradually of people's energy-conserving and environment-protective consciousness, R32 refrigerant will be widely used in air-conditioning system field with its environmental protection, efficiency is higher, cost is low advantage.Yet, because R32 refrigerant molecular weight is little compared with R22 conventional on market, R410A refrigerant, and use the operating pressure of R32 refrigerant rotary compressor inside higher, and refrigerant molecular weight is less, compressor internal pressure is larger, refrigerant just more easily penetrates into enameled wire coat, thereby more easily causes enamelled wire foaming yellowing phenomenon.The motor enamel-covered wire jaundice problem that how to solve the compressor that uses R32 refrigerant is between industry, to be badly in need of the problem of solution.
China Patent Publication No. CN202102772U discloses a kind of enameled wire for compressor motor on January 4th, 2012, as shown in Figure 1, it comprises wire (a), wire (a) surface is coated with three-layer insulated layer from inside to outside, is followed successively by polyester-imide insulating varnish (b), polyamide-imide insulating varnish (c), self-lubricating insulated paint (d).This patent can be improved the cold-resistant media of oil resistant of enamelled wire to a certain extent, but still cannot meet the job requirement of the rotary compressor that uses R32 refrigerant characteristic.
Therefore, current enamelled wire, is especially applicable to the enamelled wire of R32 cold medium compressor, still haves much room for improvement.
Summary of the invention
The present invention is intended at least solve one of technical problem existing in prior art.For this reason, one object of the present invention is to propose the cold-resistant matchmaker of a kind of oil resistant, can significantly improves blowing temperature, is particularly useful for the enamelled wire of R32 cold medium compressor.
According to an aspect of the present invention, the invention provides a kind of enamelled wire.According to embodiments of the invention, this enamelled wire comprises: wire; Polyamide-imide insulating varnish layer, this polyamide-imide insulating varnish layer is formed at the outer surface of wire; And self-lubricating insulated enamelled coating, this self-lubricating insulated enamelled coating is formed at the outer surface of polyamide-imide insulating varnish layer.
Inventor is surprised to find, enamelled wire of the present invention only has polyamide-imide insulating varnish layer and self-lubricating insulated enamelled coating dielectric layers, can realize the existing function with the enamelled wire of three-layer insulated layer, and, with respect to current enamelled wire, enamelled wire of the present invention has the cold-resistant matchmaker's characteristic of significant oil resistant, can significantly improve blowing temperature, is applicable to especially R32 cold medium compressor of compressor.
According to a further aspect in the invention, the present invention also provides a kind of compressor.According to embodiments of the invention, this compressor comprises enamelled wire of the present invention.Inventor is surprised to find, and the probability of compressor generation motor enamel-covered wire yellowing phenomenon of the present invention is little, and long service life is especially suitable for the preparation of refrigeration plant.
According to another aspect of the invention, the invention provides a kind of refrigeration plant.According to embodiments of the invention, this refrigeration plant comprises compressor of the present invention.Inventor finds, refrigeration plant of the present invention, and its compressor is difficult for occurring motor enamel-covered wire yellowing phenomenon, long service life.
In accordance with a further aspect of the present invention, the present invention also provides a kind of method of preparing aforementioned enamelled wire of the present invention.According to embodiments of the invention, the method comprises the following steps: at the outer surface polyamide coating acid imide insulating varnish of wire, to form polyamide-imide insulating varnish layer; And form self-lubricating insulated enamelled coating at the outer surface of polyamide-imide insulating varnish layer.According to embodiments of the invention, utilize the method can effectively prepare enamelled wire of the present invention, and, as previously mentioned, the enamelled wire obtaining not only can be realized the function of existing enamelled wire, and with respect to current enamelled wire, has the cold-resistant matchmaker's characteristic of significant oil resistant, can significantly improve blowing temperature, be applicable to especially R32 cold medium compressor of compressor.It should be noted that, R32 refrigerant molecular weight is little compared with R22 conventional on market, R410A refrigerant, and use the operating pressure of R32 refrigerant rotary compressor inside higher, and refrigerant molecular weight is less, compressor internal pressure is larger, refrigerant just more easily penetrates into enameled wire coat, thereby more easily causes enamelled wire foaming yellowing phenomenon.Thereby for enamelled wire of the same race, R32 refrigerant molecule more easily permeates, thereby, when being excited, the motor enamel-covered wire of (temperature rising) R32 cold medium compressor more easily foams, yellowing phenomenon, therefore the enamelled wire that, utilizes method of the present invention to prepare is particularly useful for R32 cold medium compressor.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:
Fig. 1 has shown a kind of schematic cross-section of existing compressor enamelled wire; And
Fig. 2 has shown the schematic cross-section of enamelled wire of the present invention according to an embodiment of the invention.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
One object of the present invention is to propose the cold-resistant matchmaker of a kind of oil resistant, can significantly improve blowing temperature, be particularly useful for the enamelled wire of R32 cold medium compressor.For this reason, the invention provides enamelled wire and its production and use.To be described in greater detail below.
According to an aspect of the present invention, the invention provides a kind of enamelled wire.According to embodiments of the invention, with reference to Fig. 2, this enamelled wire comprises: wire 1; Polyamide-imide insulating varnish layer 2, this polyamide-imide insulating varnish layer 2 is formed at the outer surface of wire 1; And self-lubricating insulated enamelled coating 3, this self-lubricating insulated enamelled coating 3 is formed at the outer surface of polyamide-imide insulating varnish layer 2.
Those skilled in the art understand, and conventional enamelled wire all has three-layer insulated layer at present.For example, Fig. 1 has shown the schematic cross-section of a kind of existing compressor enamelled wire (China Patent Publication No. CN202102772U is in disclosed a kind of enameled wire for compressor motor on January 4th, 2012).With reference to Fig. 1, this kind of existing compressor enamelled wire comprises wire (a), and the three-layer insulated layer of wire (a) surface-coated: from line (a) surface, be followed successively by from inside to outside polyester-imide insulating varnish (b), polyamide-imide insulating varnish (c) and self-lubricating insulated paint (d).Enamelled wire of the present invention, simpler with respect to existing enamelled wire structure.Yet, inventor is surprised to find, the enamelled wire of the present invention only with polyamide-imide insulating varnish layer and self-lubricating insulated enamelled coating dielectric layers, still can realize the function of existing enamelled wire, and with respect to current enamelled wire, enamelled wire of the present invention has the cold-resistant matchmaker's characteristic of significant oil resistant, can significantly improve blowing temperature, be applicable to especially R32 cold medium compressor of compressor.
According to embodiments of the invention, in enamelled wire of the present invention, the kind of wire 1 is not particularly limited, and according to concrete example of the present invention, wire 1 can be copper cash or aluminum steel.
In addition, it should be noted that, the diameter of wire is also not particularly limited, but conventionally can not be greater than 2mm.This be because, in the motor course of processing, it is poor that diameter is greater than the wire manufacturing of 2mm, being embodied in the wire rate of hindering can increase; And the meticulous wire of wire diameter can not be used conventionally on compressor of air conditioner.According to embodiments of the invention, the diameter of wire 1 can be 0.3mm ~ 1.5mm.
According to embodiments of the invention, in enamelled wire of the present invention, the thickness of polyamide-imide insulating varnish layer 2 is 0.021mm ~ 0.039mm, and the thickness of self-lubricating insulated enamelled coating 3 is for being greater than 0mm and being not more than 0.005mm.
In addition, it should be noted that, polyamide-imide insulating varnish is the insulating varnish that compactness is good, the extremely difficult infiltration of refrigerant molecule wherein, and self-lubricating insulated paint can improve the lubrification of enamelled wire, thereby enamelled wire of the present invention is as compressor electric motor enamelled wire, can greatly improve in use procedure foaming, the yellowing phenomenon of self.
According to a further aspect in the invention, the present invention also provides a kind of compressor.According to embodiments of the invention, this compressor comprises enamelled wire of the present invention.Inventor is surprised to find, and the probability of compressor generation motor enamel-covered wire yellowing phenomenon of the present invention is little, and long service life is especially suitable for the system of refrigeration plant.
According to embodiments of the invention, the type of compressor of the present invention is not particularly limited, as long as comprise, adopts enamelled wire of the present invention as motor enamel-covered wire.According to concrete example of the present invention, compressor of the present invention is R32 cold medium compressor.Inventor's discovery, with respect to existing R32 cold medium compressor, the motor enamel-covered wire yellowing phenomenon of R32 cold medium compressor of the present invention significantly improves, and this R32 cold medium compressor long service life.
According to another aspect of the invention, the invention provides a kind of refrigeration plant.According to embodiments of the invention, this refrigeration plant comprises compressor of the present invention.Inventor finds, refrigeration plant of the present invention, its compressor is difficult for motor enamel-covered wire yellowing phenomenon occurs, thus be difficult for aging, long service life.
According to embodiments of the invention, the type of refrigeration plant of the present invention is not particularly limited, as long as adopt compressor of the present invention.It should be noted that, this refrigeration plant comprises enamelled wire of the present invention, and therefore, it has advantages of aforementioned enamelled wire equally, does not repeat them here.According to concrete example of the present invention, this refrigeration plant is air-conditioning.
In accordance with a further aspect of the present invention, the present invention also provides a kind of method of preparing aforementioned enamelled wire.According to embodiments of the invention, the method for preparing enamelled wire of the present invention is not particularly limited.According to concrete example of the present invention, the method can comprise the following steps: at the outer surface polyamide coating acid imide insulating varnish of wire, to form polyamide-imide insulating varnish layer; And form self-lubricating insulated enamelled coating at the outer surface of polyamide-imide insulating varnish layer.According to embodiments of the invention, utilize the method can effectively prepare enamelled wire of the present invention, and, as previously mentioned, the enamelled wire obtaining not only can be realized the function of existing enamelled wire, and with respect to current enamelled wire, has the cold-resistant matchmaker's characteristic of significant oil resistant, can significantly improve blowing temperature, be applicable to especially R32 cold medium compressor of compressor.
In addition, it should be noted that, polyamide-imide insulating varnish is the insulating varnish that compactness is good, the extremely difficult infiltration of refrigerant molecule wherein, be coated on wire outer surface, and make self-lubricating insulated enamelled coating be formed at polyamide-imide insulating varnish layer outer surface, thus the enamelled wire preparing, during used as compressor electric motor enamelled wire, can significantly improve foaming, yellowing phenomenon and the lubrification of enamelled wire self.
According to embodiments of the invention, in the method for the aforementioned enamelled wire of preparation of the present invention, outer surface at polyamide-imide insulating varnish layer forms self-lubricating insulated enamelled coating, and the polyamide-imide insulating varnish that can be added with by the outer surface coating at polyamide-imide insulating varnish layer self-lubricating additive is realized.According to another embodiment of the invention, at the outer surface of polyamide-imide insulating varnish layer, form self-lubricating insulated enamelled coating, also can directly apply self-lubricating insulated paint by the outer surface at polyamide-imide insulating varnish layer and realize.
Particularly, according to embodiments of the invention, the method for the aforementioned enamelled wire of preparation of the present invention can comprise the following steps:
First, at 10 ~ 25 layers of (specifically coat is several determines according to status of equipment) polyamide-imide insulating varnish of outer surface coating of wire, to form polyamide-imide insulating varnish layer;
Then, at the outer surface of polyamide-imide insulating varnish layer, apply 1 ~ 2 layer of polyamide-imide insulating varnish that is added with self-lubricating additive.After enamelled wire dry solidification, self-lubricating additive can be separated out in last 1 ~ 2 layer of polyamide-imide insulating varnish, is attached to enamelled wire outermost layer, to form self-lubricating insulated enamelled coating.
According to another embodiment of the invention, the method for the aforementioned enamelled wire of preparation of the present invention can also comprise the following steps:
First, at 10 ~ 25 layers of (specifically coat is several determines according to status of equipment) polyamide-imide insulating varnish of outer surface coating of wire, to form polyamide-imide insulating varnish layer;
Then, at the outer surface of polyamide-imide insulating varnish layer, directly apply 1 ~ 2 layer of self-lubricating insulated paint, to form self-lubricating insulated enamelled coating.
It should be noted that, enamelled wire present inventor of the present invention obtains through arduous creative work and the work of optimization.
Below in conjunction with embodiment, the solution of the present invention is made an explanation.It will be understood to those of skill in the art that the following examples are only for the present invention is described, and should not be considered as limiting scope of the present invention.Unreceipted concrete technology or condition in embodiment, according to the described technology of the document in ability or condition or carry out according to product description.The unreceipted person of production firm of agents useful for same or instrument, being can be by the conventional products of commercial acquisition.
Embodiment 1: the preparation of enamelled wire
According to the method for preparing enamelled wire of the present invention, prepare enamelled wire, concrete steps are as follows:
First, the outer surface of the copper cash that is 0.85mm at diameter applies 17 road polyamide-imide insulating varnishs, to form the polyamide-imide insulating varnish layer that thickness is 0.021mm ~ 0.039mm;
Then, at the outer surface of polyamide-imide insulating varnish layer, applied in two coats is added with the polyamide-imide insulating varnish of self-lubricating agent, to form self-lubricating insulated enamelled coating at the outer surface of polyamide-imide insulating varnish layer.
Thus, prepare enamelled wire of the present invention.
Embodiment 2:
Take existing enamelled wire as contrast, in accordance with the following methods, the enamelled wire of the present invention preparing in embodiment 1 carried out to quality testing:
The about 2L of volume through super-dry closed container in to enclose the enamelled wire sample of 400ml refrigerator oil and the about 20cm of length several, after closed container is vacuumized, add wherein R32 refrigerant until under 95 ℃ of conditions in closed container refrigerant pressure reach 4.0MP(gauge pressure).Then, the closed container that this is equipped with to enamelled wire sample, refrigerant, refrigerator oil is placed in 95 ℃ of environment of temperature lower 48 hours, cooling rear taking-up enamelled wire sample minute good decile, then immediately it is placed in respectively in the insulating box of 130 ℃, 140 ℃, 150 ℃, 160 ℃, 170 ℃ and 180 ℃, after 10 minutes, take out, and utilize naked-eye observation through the foaming situation of the enamelled wire sample of the insulating box processing of different temperatures, to determine the blowing temperature of enamelled wire sample.The results are shown in following table 1:
Table 1
As shown in Table 1, the blowing temperature of enamelled wire of the present invention exceeds 30 ℃ than existing enamelled wire, and the blowing temperature of enamelled wire of the present invention significantly improves.Thus, show that enamelled wire of the present invention can meet the job requirement of R32 cold medium compressor preferably.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited by claim and equivalent thereof.
Claims (10)
1. an enamelled wire, is characterized in that, comprising:
Wire;
Polyamide-imide insulating varnish layer, described polyamide-imide insulating varnish layer is formed at the outer surface of described wire; And
Self-lubricating insulated enamelled coating, described self-lubricating insulated enamelled coating is formed at the outer surface of described polyamide-imide insulating varnish layer.
2. enamelled wire according to claim 1, is characterized in that, described wire is copper cash or aluminum steel.
3. enamelled wire according to claim 1, is characterized in that, the thickness of described polyamide-imide insulating varnish layer is 0.021mm ~ 0.039mm, and the thickness of described self-lubricating insulated enamelled coating is for being greater than 0mm and being not more than 0.005mm.
4. enamelled wire according to claim 1, is characterized in that, the diameter of described wire is 0.3mm ~ 1.5mm.
5. a compressor, is characterized in that, comprises the enamelled wire described in claim 1 ~ 4 any one.
6. compressor according to claim 5, is characterized in that, described compressor is R32 cold medium compressor.
7. a refrigeration plant, is characterized in that, comprises the compressor described in claim 5 or 6.
8. refrigeration plant according to claim 7, is characterized in that, described refrigeration plant is air-conditioning.
9. a method of preparing enamelled wire described in claim 1 ~ 4 any one, is characterized in that, comprises the following steps:
At the outer surface polyamide coating acid imide insulating varnish of wire, to form polyamide-imide insulating varnish layer; And
Outer surface at polyamide-imide insulating varnish layer forms self-lubricating insulated enamelled coating.
10. method according to claim 9, it is characterized in that, outer surface at polyamide-imide insulating varnish layer forms self-lubricating insulated enamelled coating, is that outer surface by polyamide-imide insulating varnish layer applies the polyamide-imide insulating varnish that is added with self-lubricating additive and realizes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210398018.2A CN103514992A (en) | 2012-10-18 | 2012-10-18 | Varnished wire, manufacturing method of varnished wire, compressor comprising varnished wire and refrigeration device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210398018.2A CN103514992A (en) | 2012-10-18 | 2012-10-18 | Varnished wire, manufacturing method of varnished wire, compressor comprising varnished wire and refrigeration device |
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| CN103514992A true CN103514992A (en) | 2014-01-15 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1063351A (en) * | 1990-11-16 | 1992-08-05 | 株式会社日立制作所 | Refrigerating plant and refrigeration compressor |
| CN101467218A (en) * | 2006-07-07 | 2009-06-24 | 古河电气工业株式会社 | Insulated wire |
| CN201466835U (en) * | 2009-04-28 | 2010-05-12 | 广东美芝制冷设备有限公司 | Power supply lead wire connector of motor for sealed compressor |
| JP2010251134A (en) * | 2009-04-16 | 2010-11-04 | Sumitomo Electric Wintec Inc | Lubricative insulated wire and motor using the same |
| CN201765862U (en) * | 2010-08-23 | 2011-03-16 | 珠海格力电工有限公司 | Enameled wire for variable-frequency compressor |
| CN202102772U (en) * | 2011-06-15 | 2012-01-04 | 广东美芝制冷设备有限公司 | Enameled wire for compressor motor |
| CN203118554U (en) * | 2012-10-18 | 2013-08-07 | 广东美芝制冷设备有限公司 | Enameled wire, compressor and refrigeration equipment with the same |
-
2012
- 2012-10-18 CN CN201210398018.2A patent/CN103514992A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1063351A (en) * | 1990-11-16 | 1992-08-05 | 株式会社日立制作所 | Refrigerating plant and refrigeration compressor |
| CN101467218A (en) * | 2006-07-07 | 2009-06-24 | 古河电气工业株式会社 | Insulated wire |
| JP2010251134A (en) * | 2009-04-16 | 2010-11-04 | Sumitomo Electric Wintec Inc | Lubricative insulated wire and motor using the same |
| CN201466835U (en) * | 2009-04-28 | 2010-05-12 | 广东美芝制冷设备有限公司 | Power supply lead wire connector of motor for sealed compressor |
| CN201765862U (en) * | 2010-08-23 | 2011-03-16 | 珠海格力电工有限公司 | Enameled wire for variable-frequency compressor |
| CN202102772U (en) * | 2011-06-15 | 2012-01-04 | 广东美芝制冷设备有限公司 | Enameled wire for compressor motor |
| CN203118554U (en) * | 2012-10-18 | 2013-08-07 | 广东美芝制冷设备有限公司 | Enameled wire, compressor and refrigeration equipment with the same |
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