CN201234181Y - Construction of frequency variable asynchronous motor coordinated with wind tunnel - Google Patents
Construction of frequency variable asynchronous motor coordinated with wind tunnel Download PDFInfo
- Publication number
- CN201234181Y CN201234181Y CNU2008201511894U CN200820151189U CN201234181Y CN 201234181 Y CN201234181 Y CN 201234181Y CN U2008201511894 U CNU2008201511894 U CN U2008201511894U CN 200820151189 U CN200820151189 U CN 200820151189U CN 201234181 Y CN201234181 Y CN 201234181Y
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- housing
- asynchronous motor
- wind tunnel
- variable frequency
- stator core
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Abstract
The utility model discloses a structure of a frequency conversion asynchronous motor, which is matched with a wind tunnel. The structure comprises a cylindrical shell body, a stator core, a rotor, a front end cover and a back end cover, wherein, a plurality of support boards penetrating the front and the back of the shell body are uniformly arranged on the inner circumferential wall of the shell body; two annular middle walls are arranged on the inner circumferential wall of the shell body in the way that the spacing between the two annular middle walls corresponds to the stator core length; mounting plates penetrating the front and the back of the shell body are arranged on two sides of a horizontal center line on the outer circumferential wall of the shell body, so that the shell body can be divided into an upper part and a lower part with the two mounting plates as boundaries; and a front end flange, a rear end flange and a middle flange are formed on the outer circumference in the radial direction. The structure of the frequency conversion asynchronous motor has the advantages of higher mechanical strength, compacter structure, and convenient cooling and ventilation of the stator core.
Description
Technical field
The utility model relates to a kind of structure of variable frequency asynchronous motor matched with wind tunnel.
Background technology
Wind-tunnel is can manually produce and control air-flow with the flowing of simulated flight device or object ambient gas, and can measure air-flow to the effect of object and a kind of duct test equipment of observing physical phenomenon.The power section of wind-tunnel is equipped with motor and fan system, and motor rotates under ac variable frequency speed regulation, drives blade, and electric energy changes the mechanical energy of blade into, and the mechanical energy of blade changes the pressure energy of air dielectric into, produces flowing of medium in the wind-tunnel pipeline.By finishing to air-flow, make it to become the air-flow of uniform and stable, use the flow field so that satisfy test.Automobile wind tunnel need be simulated under the different wind friction velocities influence to automobile, so generally select for use asynchronous motor supplied with variable frequency to carry out speed governing, simultaneously because the impeller inertia (2055kg.m2) of blower fan is bigger, also be suitable for adopting the variable frequency starting mode, can directly utilize the breakdown torque of motor to start by frequency modulation, reduce the impact of starting current.Motor must be installed in the wind-tunnel of two rice diameters, so structurally different with conventional motor.When structural design, consider of the influence of non-sine power supply characteristic to aspects such as variable-frequency motor vibration, noises.When motor adopts inverter supply, can make the complexity more that becomes by vibrations of caused by factors such as electromagnetism, machinery, ventilation and noise.The intrinsic space harmonics of each that contains in the variable frequency power supply time time harmonic and motor electromagnetism part is interfered mutually, forms various electro-magnetic exciting forces.When the eigentone of electromagnetic force wave frequency and motor body consistent or near the time, will produce covibration, thereby strengthen noise.So when design, will take into full account motor components and whole rigidity, improve its natural frequency as possible, to avoid producing covibration with each time Reeb.
Summary of the invention
The purpose of this utility model is in order to overcome the deficiencies in the prior art, a kind of structure that is used for the variable frequency asynchronous motor matched with wind tunnel of automobile wind tunnel test to be provided, and its mechanical strength is than higher, and is compact on the structure.
A kind of technical scheme that realizes above-mentioned purpose is: a kind of structure of variable frequency asynchronous motor matched with wind tunnel, comprise drum type brake housing, stator core, rotor and front and rear cover, wherein,
Be provided with some supporting brackets that run through before and after the housing on the internal perisporium of described housing in uniform way, on the internal perisporium of described housing also one to be provided with two annular mesospores at interval with the mode of the corresponding distance of stator core length;
The periphery wall of described housing is respectively equipped with a mounting panel that runs through before and after the housing in the both sides of horizontal center line, so that housing is that the boundary is divided into the upper and lower with this two mounting panel, also radially be provided with front and back ends flange and spacer flanger on the periphery wall of described housing.
The structure of above-mentioned variable frequency asynchronous motor matched with wind tunnel, wherein, described housing is offered a ventilation hole respectively in the bottom near two ends.
The structure of above-mentioned variable frequency asynchronous motor matched with wind tunnel, wherein, described supporting bracket is 12.
The structure of above-mentioned variable frequency asynchronous motor matched with wind tunnel, wherein, described housing adopts the steel plate of 20mm to roll and forms.
The structure of above-mentioned variable frequency asynchronous motor matched with wind tunnel, wherein, described two annular mesospores are offered in the relevant position of supporting bracket and are used for the slotted eye that supporting bracket is passed through, and described spacer flanger is divided into up and down two parts and is separately fixed on the periphery wall of housing.
The structure of above-mentioned variable frequency asynchronous motor matched with wind tunnel, wherein, described stator core embeds between two annular mesospores and with two annular mesospores fixedlys connected.
The technical scheme of the structure of variable frequency asynchronous motor matched with wind tunnel of the present utility model, i.e. motor housing employing is columnar structured, and the motor housing wall adopts the steel plate of thick 20mm to roll and forms, and is inner by 12 uniform band steel supporting brackets.Rear and front end flange and the sealing of wind-tunnel internal diameter, spacer flanger rise and strengthen electric machine structure intensity, cut off the turnover wind path simultaneously; The horizontal mounting panel of cylinder both sides plays main installing and locating effect, can adjust the center of motor by adjusting pad when mounted, and flange was to support the weight of whole motor before, during and after mounting panel ran through; Two mesospores of motor internal adopt steel plate to be welded and (slot along circumference, before and after supporting bracket axially runs through), stator core is fixed with alignment pin after being installed on the mesospore again, show that by ANSYS analysis of finite element method result such mechanical strength is than higher, compact on the structure, and be convenient to stator core ventilation cooling.
Description of drawings
Fig. 1 is the structural representation of variable frequency asynchronous motor matched with wind tunnel of the present utility model;
Fig. 2 is the shell mechanism schematic diagram of variable frequency asynchronous motor matched with wind tunnel of the present utility model.
Embodiment
In order to understand the technical solution of the utility model better, below by embodiment particularly and be described in detail in conjunction with the accompanying drawings:
See also Fig. 1 and Fig. 2, the structure of variable frequency asynchronous motor matched with wind tunnel of the present utility model comprises housing 1, stator core 2, rotor 3, forward and backward end cap 4,5 and front and back end bearing 7,8, wherein:
Be provided with 12 supporting brackets 11 that run through housing 1 front and back on the internal perisporium of housing 1 in uniform way, this supporting bracket 11 adopts band steel to be welded on the internal perisporium of housing 1; Go back the compartment of terrain on the internal perisporium of housing 1 and be provided with the two annular mesospores 12 that lay respectively at outside stator core 2 two ends, this two annular mesospore 12 adopts steel plates to be welded on the inwall of housing 1; Two annular mesospores 12 are offered in the relevant position of supporting bracket 11 and are used for the slotted eye that supporting bracket 11 is passed through;
The periphery wall of housing 1 is respectively equipped with a mounting panel 13 that runs through housing 1 front and back in the both sides of horizontal center line, so that housing 1 is that the boundary is divided into the upper and lower with this two mounting panel 13; Also radially be provided with front end, centre, back end flanges 14,15,16 on the periphery wall of housing 1; Spacer flanger 15 adopts up and down, and two parts are welded on respectively on housing 1 outer wall;
Also offer installing hole on two mounting panels 13, be used for motor is installed in wind-tunnel;
Forward and backward end cap 4,5 removably connects with front and back end flange 14,16 respectively.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.
Claims (6)
1. the structure of a variable frequency asynchronous motor matched with wind tunnel comprises drum type brake housing, stator core, rotor and front and rear cover, it is characterized in that,
Be provided with some supporting brackets that run through before and after the housing on the internal perisporium of described housing in uniform way, on the internal perisporium of described housing also one to be provided with two annular mesospores at interval with the mode of the corresponding distance of stator core length;
The periphery wall of described housing is respectively equipped with a mounting panel that runs through before and after the housing in the both sides of horizontal center line, so that housing is that the boundary is divided into the upper and lower with this two mounting panel, also radially be provided with front and back ends flange and spacer flanger on the periphery wall of described housing.
2. the structure of variable frequency asynchronous motor matched with wind tunnel according to claim 1 is characterized in that, described housing is offered a ventilation hole respectively in the bottom near two ends.
3. according to the structure of the described variable frequency asynchronous motor matched with wind tunnel of claim 1, it is characterized in that described supporting bracket is 12.
4. the structure of variable frequency asynchronous motor matched with wind tunnel according to claim 1 is characterized in that, described housing adopts the steel plate of 20mm to roll and forms.
5. the variable frequency asynchronous motor matched structure in hole according to claim 1, it is characterized in that, described two annular mesospores are offered in the relevant position of supporting bracket and are used for the slotted eye that supporting bracket is passed through, and described spacer flanger is divided into up and down two parts and is separately fixed on the periphery wall of housing.
6. the structure of variable frequency asynchronous motor matched with wind tunnel according to claim 1 is characterized in that, described stator core embeds between two annular mesospores and with two annular mesospores fixedlys connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201511894U CN201234181Y (en) | 2008-07-24 | 2008-07-24 | Construction of frequency variable asynchronous motor coordinated with wind tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201511894U CN201234181Y (en) | 2008-07-24 | 2008-07-24 | Construction of frequency variable asynchronous motor coordinated with wind tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201234181Y true CN201234181Y (en) | 2009-05-06 |
Family
ID=40620569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201511894U Expired - Lifetime CN201234181Y (en) | 2008-07-24 | 2008-07-24 | Construction of frequency variable asynchronous motor coordinated with wind tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201234181Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025207A (en) * | 2010-08-12 | 2011-04-20 | 许晓华 | Novel motor |
-
2008
- 2008-07-24 CN CNU2008201511894U patent/CN201234181Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025207A (en) * | 2010-08-12 | 2011-04-20 | 许晓华 | Novel motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090506 |
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| CX01 | Expiry of patent term |