CN2231831Y - Double-insulated full-enclosed asynchronous motor - Google Patents
Double-insulated full-enclosed asynchronous motor Download PDFInfo
- Publication number
- CN2231831Y CN2231831Y CN 94224964 CN94224964U CN2231831Y CN 2231831 Y CN2231831 Y CN 2231831Y CN 94224964 CN94224964 CN 94224964 CN 94224964 U CN94224964 U CN 94224964U CN 2231831 Y CN2231831 Y CN 2231831Y
- Authority
- CN
- China
- Prior art keywords
- enclosed
- stator core
- double
- stator
- totally
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Motor Or Generator Frames (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The utility model relates to a novel motor casing which is made of engineering plastic. In the utility model, the outer circumference of a stator core is in sealing connection with a front end cover and a rear end cover to be as the inner layer of the motor casing; a sandwich layer which is used for making cooling air flow is arranged between an insulated outer wall and the inner layer, and stators are directly cooled by cooling air. An asynchronous motor which is assembled with the utility model has the good heat dissipation and a fully-enclosed and double-insulation structure, which not only can prevent steam and fly ash invasion but also can achieve a higher anti-shock grade.
Description
The present invention relates to a kind of casing of motor, in particular, is a kind of totally enclosed insulation crust that is used for small size asynchronous motor.
Asynchronous motor is widely used in producing, various fields in life, especially use the small size asynchronous motor of single-phase electricity, because its harder mechanical property, and can make closed structure, in bad conditions such as trickle, dust, shown better superiority.
Common asynchronous machine is a metal shell.By the motor-driven equipment of this class, for preventing to get an electric shock, its shell must protective earthing.This is very inconvenient for roving equipment, does not often cause electric shock accidents owing to the scene has reliable earthing device.The tube cleaning of in sewage overflows environment, working for example; Civilian water pump, air compressor and the building machineries such as makita 4100NH that use a large amount of cooling waters, because often move the working site, environment is very unfavorable to electrical machine insulation again, when not connecting excellent protection ground connection, getting an electric shock and dying happens occasionally.
Chinese patent CN2080260 discloses a kind of double insulated small size asynchronous motor.It is simple in structure, is easy to common motor is improved.But the insulating case between casing and stator is unfavorable for heat conduction, is not suitable for the totally-enclosed asynchronous machine of small-sized efficient.
The objective of the invention is to: provide a kind of and can good heat radiating have full-closed structure again and be the asynchronous electric casing of insulation.
Solution of the present invention is: form a kind of motor case jointly by forward and backward end cap and the stator casing with new structure.The double-decker that stator casing is made up of stator core and insulator, interlayer are the passages that cooling air is flowed through.As the stator core of endothecium structure, its excircle fully is exposed in this passage, and connects with front and rear cover by insulator seam and flexible sealing ring, and the insulator outer wall is fixed on the stator core.
The invention will be further described below in conjunction with accompanying drawing:
Fig. 1 is one embodiment of the present of invention structure charts;
Fig. 2 is the motor housing STRUCTURE DECOMPOSITION shaft side figure of Fig. 1 embodiment.
From Fig. 1 and Fig. 2 as can be seen, formed the rotating part of motor by rotating shaft 8, rotor supplementary insulation 9, rotor 10 and bearing; Fan 6 and radome fairing 7 are formed the air cooling equipment of motor; Rear end cap 5 is connected with front end housing 1 tension by screw with sealing ring 2.Can further see in Fig. 2: the stator casing of new structure be by insulator loop configuration 4a that is pressed on stator core 3 both ends of the surface that makes and the some rib 4b that are distributed on the stator core cylindrical, and outer wall 4c is formed jointly.And make an integral body with stator core.
In said structure, blow over from the interlayer of stator core cylindrical and insulator outer wall by the cooling blast that fan produces, stator is produced direct cooling effect.Simultaneously, insulator is pressed on the ring assembling structure of stator core both ends of the surface, through sealing ring and front and rear cover close-coupled, forms the can that connection continues.
Because the high speed development of engineering plastics technical merit, the main performance of some kinds satisfies the requirement of said structure at aspects such as intensity, heat-resisting, creep and thermal expansion factors fully at present.So the insulator of novel stator casing uses the engineering plastics can injection moulding or compression molding, is very suitable.
Forward and backward end cap can be a metal.In said structure, the supplementary insulation of rotor, stator is set up, and the end cap of metal can not destroy double insulated requirement.But, with the preferred kind of engineering plastics and improve the internal structure of forward and backward end cap, can make motor weight lighter, it is more steady, safer to turn round.
The motor case that the present invention relates to also is suitable for having other type motor of stator.
Claims (4)
1, the totally-enclosed asynchronous machine of a kind of two insulation, it is characterized in that: stator casing is the double-decker that the shell (4) made of stator core (3) and insulator is formed, between the outer wall that the excircle of stator core and insulator are made (4C) distance is arranged, the passage of flowing through as cooling air.
2, according to the totally-enclosed asynchronous machine of claims 1 described two insulation, it is characterized in that: the insulator of stator casing (4) is by the circulus (4a) that is pressed on stator core (3) both ends of the surface; With the circulus all-in-one-piece, the some ribs (4b) of axial distribution on the stator core excircle; And the common composition of outer wall (4c).
3, the totally-enclosed asynchronous machine of two insulation according to claim 1 is characterized in that: the circumferential surface of stator core (3) fully is exposed in the passage that cooling air flows through.
4, the totally-enclosed asynchronous machine of two insulation according to claim 1 is characterized in that: the stop portion that front and rear cover connects with stator casing, be equipped with the sealing ring that flexible material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94224964 CN2231831Y (en) | 1994-08-10 | 1994-08-10 | Double-insulated full-enclosed asynchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94224964 CN2231831Y (en) | 1994-08-10 | 1994-08-10 | Double-insulated full-enclosed asynchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2231831Y true CN2231831Y (en) | 1996-07-24 |
Family
ID=33838248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94224964 Expired - Fee Related CN2231831Y (en) | 1994-08-10 | 1994-08-10 | Double-insulated full-enclosed asynchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2231831Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104728411A (en) * | 2014-06-28 | 2015-06-24 | 吴小杰 | Box body interlayer air cooling high thermal power reduction box with small tooth difference |
| CN107947438A (en) * | 2017-12-19 | 2018-04-20 | 杭州江南电机股份有限公司 | A kind of energy-efficient plastic packaging motor and its installation method |
-
1994
- 1994-08-10 CN CN 94224964 patent/CN2231831Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104728411A (en) * | 2014-06-28 | 2015-06-24 | 吴小杰 | Box body interlayer air cooling high thermal power reduction box with small tooth difference |
| CN107947438A (en) * | 2017-12-19 | 2018-04-20 | 杭州江南电机股份有限公司 | A kind of energy-efficient plastic packaging motor and its installation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |