CN203146424U - Air guiding device and electric motor for centrifugal ventilating device - Google Patents
Air guiding device and electric motor for centrifugal ventilating device Download PDFInfo
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- CN203146424U CN203146424U CN 201320032284 CN201320032284U CN203146424U CN 203146424 U CN203146424 U CN 203146424U CN 201320032284 CN201320032284 CN 201320032284 CN 201320032284 U CN201320032284 U CN 201320032284U CN 203146424 U CN203146424 U CN 203146424U
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- guiding device
- wind
- guide plate
- ventilation equipment
- electric motor
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Abstract
The utility model relates to an air guiding device and an electric motor and particularly relates to an air guiding device and an electric motor for a centrifugal ventilating device. According to the air guiding device for the centrifugal ventilating device, upper and lower surfaces of the air guiding device are provided with a plurality of upper flow deflectors and lower flow deflectors respectively, the air guiding device comprises a bearing block which is used for supporting a bearing, and a circumferential positioning face is arranged on an outer ring of the air guiding device. The electric motor for the centrifugal ventilating device comprises the air guiding device for the centrifugal ventilating device, the circumferential positioning face is matched with a casing of the electric motor to achieve radial positioning, and the air guiding device is matched with the casing of the electric motor directly, so that a bearing bracket of a traditional electric motor is removed, cumulative errors during matching are reduced, the coaxiality of two bearing block holes is improved, noises of the electric motor are reduced, the overall efficiency of the electric motor is improved, and the electric motor can be used in centrifugal ventilating device products such as dust collectors , gas compressors and the like.
Description
Technical field
The utility model relates to a kind of wind-guiding device and motor, particularly a kind of wind-guiding device and motor for centrifugal ventilation equipment.
Background technique
The part of prior motor axial distribution mainly contains impeller outer cover, impeller, wind-guiding device, bearing bracket stand, stator, rotor, motor housing etc.; High-revolving noise of motor is generally at 95～110 decibels, noise is one of motor problem demanding prompt solution always, noise mainly is divided into aerodynamic noise, mechanical noise and electromagnetic noise, wherein the noise that produces of rotor unbalance is most important part in the mechanical noise, and the inhomogeneous easy increase aerodynamic noise of the radial clearance between impeller and the wind-guiding device; The root of these two kinds of noises mainly is caused by the coaxality problem between the coaxality of electric machine main shaft bearings at both ends, wind-guiding device and the impeller; In addition, the coaxiality error of motor shaft bearings at both ends is bigger, makes the air gap between the rotor inhomogeneous, has a strong impact on motor properties.So the coaxality problem that solves between relevant the cooperation is extremely important, it directly affects noise and the whole efficiency of motor.
Bearing bracket stand only plays a supportive role in motor, owing to need satisfy intensity, and rigidity, the location requirement of etc.ing also increases the axial dimension of motor, obstruction air motion, and the cost of increase motor when its existence increases fluid circulation space easily.
Flow separation that fluid produces, eddy current loss and fluid can not effectively be converted to problems such as axial flow and have a strong impact on the aeroperformance of motor in the wind-guiding device guiding gutter of prior motor and the design of stream, thereby have reduced the whole efficiency of motor.
The model utility content
At the prior art deficiency, the utility model proposes a kind of wind-guiding device for centrifugal ventilation equipment and motor, be intended to solve the coaxality of electric machine main shaft bearings at both ends, the noise of motor and the problem of whole efficiency.
The technological scheme that the utility model proposes is:
A kind of wind-guiding device for centrifugal ventilation equipment, the upper and lower surface of wind-guiding device have guide plate and following guide plate on several respectively, and described wind-guiding device has the bearing support of spring bearing, and the outer ring of described wind-guiding device is provided with locating face.
Further technological scheme can also be, described locating face and described going up between the guide plate are provided with flow-stopping plate.
Further technological scheme can also be, adjacent described going up between the guide plate forms guiding gutter, and described guiding gutter is provided with the inclined bottom plate of attenuation from inside to outside.
Further technological scheme can also be that the angle of inclination of described inclined bottom plate and described wind-guiding device upper surface is 5 °～20 °.
Further technological scheme can also be, the described described locating face of going up the guide plate side is provided with the axial conical surface.
Further technological scheme can also be that the angle of the described conical surface and described locating face is 20 ° ~ 25 °.
Further technological scheme can also be, the described conical surface is between described flow-stopping plate, and described conical surface two ends are connected to described flow-stopping plate respectively.
Further technological scheme can also be, described guide plate down is provided with cylindrical body.
Further technological scheme can also be, described guide plate down, goes up guide plate and is arcuation, and it is provided with a plurality of and along the circumferential direction is evenly distributed on described wind-guiding device lower surface, upper surface respectively, and described guide plate down also is provided with tapped hole.
A kind of motor for centrifugal ventilation equipment, described motor comprise above-mentioned a kind of wind-guiding device for centrifugal ventilation equipment.
According to above-mentioned technological scheme, the utility model beneficial effect: described wind-guiding device has described bearing support, and described wind-guiding device has merged the function of traditional bearing frame, has shortened the motor axial space, reduces number of spare parts, reduces cost; The outer ring of described wind-guiding device is provided with described locating face, described locating face cooperates with motor housing, realize radial location, directly cooperate with motor housing by described wind-guiding device, remove the bearing bracket stand in the conventional motors, reduce integrating error in the cooperation, improved the coaxality of diaxon bearing hole, thereby reduced the whole efficiency of noise and the raising motor of motor.
Owing to the utlity model has above-mentioned characteristics and advantage, can be applied in the centrifugal ventilation equipment products such as vacuum cleaner, gas compressor for this reason.
Description of drawings
Fig. 1 is the structural representation of a kind of wind-guiding device for centrifugal ventilation equipment of using technical solutions of the utility model;
Fig. 2 is the structural representation of a kind of wind-guiding device other direction for centrifugal ventilation equipment of using technical solutions of the utility model;
Fig. 3 is the sectional view after the motor of application technical solutions of the utility model assembles;
Fig. 4 is the structural representation of using the motor of technical solutions of the utility model;
Fig. 5 is the partial enlarged drawing at A place among Fig. 1;
Fig. 6 is B-B sectional drawing among Fig. 5;
Fig. 7 is C-C sectional drawing among Fig. 5.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
All comprise bearing bracket stand at traditional motor, and following three aspects must be satisfied in the bearing bracket stand location: first, guarantee the position degree in each positioning hole and motor housing axial screw thread hole, second: satisfy the position degree requirement of all positioning holes integral body and bearing hole, the 3rd, bearing bracket stand and motor housing axially locating end face need guarantee certain planeness.Bearing bracket stand had both increased difficulty of processing like this, cannot say for sure to demonstrate,prove the required Location accuracy of motor again.
For this reason, the utility model is considered that the functional requirement of bearing bracket stand be designed in the wind-guiding device, thereby remove traditional bearing bracket stand, as depicted in figs. 1 and 2, the utility model proposes a kind of wind-guiding device for centrifugal ventilation equipment, wind-guiding device 4 upper and lower surfaces have guide plate 41 and following guide plate 42 on several respectively, and described wind-guiding device 4 has the bearing support 43 of spring bearing, and the outer ring of described wind-guiding device 4 is provided with locating face 7.
Described wind-guiding device can be applicable in the motor, present embodiment, be that example is set forth described wind-guiding device with the motor, as shown in Figure 3 and Figure 4, motor also comprises electric machine main shaft 1, shell 11, rotor 2, stator 3, impeller 5 and impeller outer cover 6, and described electric machine main shaft 1 passes described motor housing 11, rotor 2, stator 3, wind-guiding device 4, impeller 5 and impeller outer cover 6 successively.
Wherein, remove traditional bearing bracket stand, described wind-guiding device 4 has the bearing support 43 of spring bearing, the bearing support of traditional bearing frame is added on the described wind-guiding device 4, and described wind-guiding device 4 has merged the function of traditional bearing frame, has shortened the motor axial space, reduce number of spare parts, reduce cost; The outer ring of described wind-guiding device 4 is provided with described locating face 7, described locating face 7 cooperates with described motor housing 11, the described end of guide plate 42 down is connected to described locating face 7, thereby fixing described locating face 7, described locating face 7 cooperates with described motor housing 11, realize radial location, described guide plate 42 down and described locating face 7 all are arranged on described wind-guiding device 4, described wind-guiding device 4 is directly cooperated with described motor housing 11 realize the location, bearing bracket stand in the middle of having omitted like this, reduce the integrating error that cooperate, thereby improved Location accuracy, improved the coaxality of diaxon bearing hole.
In sum, the utility model as a part, produces following beneficial effect with traditional bearing bracket stand and wind-guiding device:
One, increasing described locating face 7 cooperates with the circumferential of described motor housing 11, the coaxality that so only needs to guarantee a pair of fitting surface requires just can realize the circumferential location of described wind-guiding device 4 and described motor housing 11, minimizing is cooperated and the accumulation of error of generation by original a plurality of parts, thereby reduces the mechanical noise of motor.
Two, increase described bearing support 43 at described wind-guiding device 4, reduced number of spare parts; Increase described bearing support 43 on the described wind-guiding device 4, both realized the function of traditional bearing frame, can reach the positioning accuracy request of bearing hole and bearing outer ring again equally, make motor reduce by a part like this, thereby reduced cost.
Three, improve air gap uniformity between described rotor 2 and the described stator 3; Size of gaps between described rotor 2 and the described stator 3 influences the mechanical property of whole motor, the coaxality of described electric machine main shaft 1 bearings at both ends directly determines the air gap uniformity between described rotor 2 and the described stator 3, the air gap electromagnetic torque difference that do not exist together, make whole magnetic circuit system instability like this, so raising of coaxality, motor magnetic circuit system stability is improved, thereby improved the overall mechanical properties of motor.
Radial clearance when four, the described impeller 5 of assurance cooperates with described wind-guiding device 4, the aeroperformance of enhancing motor; Gap between described impeller 5 and the described wind-guiding device 4 is less, and exist strong non-permanent interaction, described wind-guiding device 4 symmetrical position radial clearance differences, the aerodynamic loading difference that it is suffered, make wind-guiding device that vibration and distortion take place, and produce high-intensity eddy current crack at little gap location.The utility model increases described bearing support 43 at described wind-guiding device 4, eliminated the positioning error between described wind-guiding device 4 and the described bearing support 43 fully, described impeller 5 all is described electric machine main shaft 1 axis with described wind-guiding device 4 coaxalitys location benchmark, the location unifying datum, reduced the nonuniformity of described impeller 5 and described wind-guiding device 4 radial clearances, thereby eliminated the vibration of aerodynamic noise and wind-guiding device and distortion, thereby the stability of the aeroperformance between impeller and the wind-guiding device is improved.
As shown in Figure 5, described locating face 7 and described going up between the guide plate 41 are provided with flow-stopping plate 8.Described flow-stopping plate 8 is connected to described locating face 7 and described guide plate 41 ends of going up, the curved groove in described flow-stopping plate 8 both sides, to cooperate flowing of fluid, because have jet in described impeller 5 outlet ports, flowing states such as tail, fluid flows very inhomogeneous, and under the high rotary speed working environment of motor, the peripheral velocity height of air-flow, segment fluid flow forms the eddy region of rotation at a high speed because inertia and fluid viscosity act on described guide plate 41 tops of going up, and make described wind-guiding device 4 pressure distribution inhomogeneous, obstruction gas carries out next stage and flows, described locating face 7 and described going up between the guide plate 41 are provided with described flow-stopping plate 8, not only increase the intensity of described wind-guiding device 4 but also reduced eddy region, thereby reduced the eddy current amount.
As shown in Figure 5 and Figure 6, adjacent described going up forms guiding gutter 411 between the guide plate 41, and described guiding gutter 411 is provided with the inclined bottom plate 45 of attenuation from inside to outside.Described inclined bottom plate 45 tilts in described guiding gutter 411 outer circumferential direction, export attenuation gradually from described guiding gutter 411 entrances to described guiding gutter 411, be that described inclined bottom plate 45 exports attenuation from described wind-guiding device 4 entrances to described wind-guiding device 4, described inclined bottom plate 45 is 5 °～20 ° with the angle of inclination of described wind-guiding device 4 upper surfaces, thereby described guiding gutter 411 outlets and the area ratio of entrance are increased, improved the pressure-recovery factor of described wind-guiding device 4, thereby the pressure reduction and the air mass flow that have increased, and reduced flow separation and the eddy current loss of fluid, thereby improved the whole efficiency of motor.Because air gets rid of to described wind-guiding device 4 after accelerating by described impeller 5, described guiding gutter 411 is flow channels of high-velocity fluid, and makes fluid deceleration supercharging by the expansion of cross section; Because the viscosity of gas, part gas is attached to the wall of described wind-guiding device 4, make the air-flow on the water passage surface form turbulent boundary layer, so flow except main flow direction, also having formed different speed, caused flow separation, wherein segment fluid flow moves along being attached on described wind-guiding device 4 base plates, and velocity attitude is parallel with described wind-guiding device 4 base plates; Described inclined bottom plate 45 tilts in described guiding gutter 411 outer circumferential direction, export attenuation gradually from described guiding gutter 411 entrances to described guiding gutter 411, on the one hand, keep described under the constant prerequisite of guide plate 41 with the Flow area of described wind-guiding device 4 outlets and entrance than increasing, thereby improved the pressure-recovery factor of described wind-guiding device 4; On the other hand, the fluid-flow rate direction that is attached on described wind-guiding device 4 base plates has produced certain axial inclination, the mobile main flow that trends towards of this part fluid is flowed, thereby reduced flow separation, improves the whole efficiency of motor.
As Fig. 5 and shown in Figure 7, the described described locating face 7 of going up guide plate 41 sides is provided with the axial conical surface 71.Be provided with the axial described conical surface 71 in described wind-guiding device 4 circumferential end faces, the described conical surface 71 plays afflux, make the fluid axial motion more level and smooth, particularly, the described locating face 7 of described guide vane 41 sides is provided with the described conical surface 71 vertically, the next stage that leads smoothly of effluent air in the described guiding gutter 411 is flowed, reduce flow losses; Further, the described conical surface 71 is 20 ° ~ 25 ° with the angle of described locating face 7, its catchment effect the best.
In order further to improve aeroperformance, the described conical surface 71 is between described flow-stopping plate 8, and the described conical surface 71 two ends are connected to described flow-stopping plate 8 respectively.Two described flow-stopping plates 8 are connected with head end, the end of the described conical surface 71 respectively, thereby, under the acting in conjunction of the described conical surface 71 and described flow-stopping plate 8, described inclined bottom plate 45, further improve aeroperformance.
As shown in Figure 2, described guide plate 42 down is provided with cylindrical body 46.Described cylindrical body 46 is used for the described stator 3 of axially locating, assembly axially locating for described rotor 2, described stator 3, described motor housing 11 has the locating face of the described stator 3 in location, described cylindrical body 46 compresses an end of described stator 3, the locating face of described motor housing 11 compresses the other end of described stator 3, thereby realizes axially locating.
Described following guide plate 42, last guide plate 41 are arcuation, and it is provided with a plurality of and along the circumferential direction is evenly distributed on described wind-guiding device 4 lower surfaces, upper surface respectively, and described guide plate 42 down also is provided with tapped hole 44.Described tapped hole 44 is used for being connected with described motor housing 11, described following guide plate 42, last guide plate 41 are arcuation and are conducive to improve aeroperformance, by screw described guide plate 42 down is connected with described motor housing 11, realize axially locating, described wind-guiding device 4 is directly cooperated with described motor housing 11 realize the location.
The utility model also proposes a kind of motor for centrifugal ventilation equipment, and described motor comprises above-mentioned a kind of wind-guiding device for centrifugal ventilation equipment.
According to above-mentioned technological scheme, going up guide plate 41 described in the described wind-guiding device 4 is 14, be shaped as arc, highly be 7mm, described upward guide plate 41 and described impeller outer cover 6 interior edge face axial seals, described guide plate 42 down is 7, be shaped as arc, height 11mm with described motor housing 11 end face axial sealing, avoids gas leakage; When machine operation, described impeller 5 rotates with described electric machine main shaft 1 one superhigh speeds, fluid in the described impeller 5 is thrown toward described wind-guiding device 4 under action of centrifugal force, described guiding gutter 411 in the described wind-guiding device 4 is passages that fluid flows, and fluid is flowed through behind the described wind-guiding device 4, speed descends, and kinetic energy is converted to static energy; A part of fluid of flowing through behind the described wind-guiding device 4 flows into atmosphere environment through described motor housing 11 places of windowing, and a part of fluid flow through described stator 3, described rotor 2 are taken away the heat that described stator 3, described rotor 2 and winding produce, the reduction temperature.
As shown in table 1, the electromechanical testing efficiency value of prior art.
Table 1
As shown in table 2, the electric efficiency testing efficiency value of application the technical program.
Table 2
Above-mentioned table 1 and table 2 are to test under the situation that base dimension reaches and the wind-guiding device fit dimension is constant of impeller, for this reason, by table 1 and table 2 as can be known, under the basic identical situation of power input to a machine, the utility model improved 2.86% than the whole efficiency of the motor of traditional tape spool bolster.
Below only be preferred embodiment of the present utility model, not in order to limiting the utility model, all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. wind-guiding device that is used for centrifugal ventilation equipment, the upper and lower surface of wind-guiding device has guide plate and following guide plate on several respectively, it is characterized in that described wind-guiding device has the bearing support of spring bearing, the outer ring of described wind-guiding device is provided with locating face.
2. a kind of wind-guiding device for centrifugal ventilation equipment according to claim 1 is characterized in that, described locating face and described going up between the guide plate are provided with flow-stopping plate.
3. a kind of wind-guiding device for centrifugal ventilation equipment according to claim 1 is characterized in that, adjacent described going up between the guide plate forms guiding gutter, and described guiding gutter is provided with the inclined bottom plate of attenuation from inside to outside.
4. a kind of wind-guiding device for centrifugal ventilation equipment according to claim 3 is characterized in that, the angle of inclination of described inclined bottom plate and described wind-guiding device upper surface is 5 °～20 °.
5. a kind of wind-guiding device for centrifugal ventilation equipment according to claim 2 is characterized in that, the described described locating face of going up the guide plate side is provided with the axial conical surface.
6. a kind of wind-guiding device for centrifugal ventilation equipment according to claim 5 is characterized in that, the angle of the described conical surface and described locating face is 20 ° ~ 25 °.
7. a kind of wind-guiding device for centrifugal ventilation equipment according to claim 6 is characterized in that, the described conical surface is between described flow-stopping plate, and described conical surface two ends are connected to described flow-stopping plate respectively.
8. a kind of wind-guiding device for centrifugal ventilation equipment according to claim 1 is characterized in that, described guide plate down is provided with cylindrical body.
9. a kind of wind-guiding device for centrifugal ventilation equipment according to claim 1, it is characterized in that, described following guide plate, last guide plate are arcuation, it is provided with a plurality of and along the circumferential direction is evenly distributed on described wind-guiding device lower surface, upper surface respectively, and described guide plate down also is provided with tapped hole.
10. a motor that is used for centrifugal ventilation equipment is characterized in that described motor comprises the arbitrary described a kind of wind-guiding device for centrifugal ventilation equipment of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320032284 CN203146424U (en) | 2013-01-22 | 2013-01-22 | Air guiding device and electric motor for centrifugal ventilating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320032284 CN203146424U (en) | 2013-01-22 | 2013-01-22 | Air guiding device and electric motor for centrifugal ventilating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203146424U true CN203146424U (en) | 2013-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320032284 Expired - Lifetime CN203146424U (en) | 2013-01-22 | 2013-01-22 | Air guiding device and electric motor for centrifugal ventilating device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203146424U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557184A (en) * | 2013-10-23 | 2014-02-05 | 捷和电机制品(深圳)有限公司 | Diffuser and motor used for centrifugal ventilation equipment |
| CN103939396A (en) * | 2013-01-22 | 2014-07-23 | 捷和电机（深圳）有限公司 | Air guiding device and motor for centrifugation ventilation equipment |
-
2013
- 2013-01-22 CN CN 201320032284 patent/CN203146424U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939396A (en) * | 2013-01-22 | 2014-07-23 | 捷和电机（深圳）有限公司 | Air guiding device and motor for centrifugation ventilation equipment |
| CN103939396B (en) * | 2013-01-22 | 2017-02-08 | 捷和电机制品(深圳)有限公司 | Air guide device and motor for centrifugal ventilation equipment |
| CN103557184A (en) * | 2013-10-23 | 2014-02-05 | 捷和电机制品(深圳)有限公司 | Diffuser and motor used for centrifugal ventilation equipment |
| CN103557184B (en) * | 2013-10-23 | 2016-04-06 | 捷和电机制品(深圳)有限公司 | A kind of Diffuser for centrifugal ventilation equipment and motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIEHE ELECTRIC MACHINE (SHENZHEN) CO., LTD. Free format text: FORMER OWNER: JIE AND ELECTRIC (SHENZHEN) CO., LTD. Effective date: 20131212 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20131212 Address after: The 518104 Ring Road in the town Guangdong city of Shenzhen province Baoan District Shajing Tang Gang Da Tang Industrial Zone No. 10 building 1-7 Patentee after: CHIAPHUA COMPONENTS (SHENZHEN) Ltd. Address before: The 518104 Ring Road in the town Guangdong city of Shenzhen province Baoan District Shajing Tang Gang Da Tang Industrial Zone No. 8 Building C 2 to 3 Patentee before: CHIAPHUA COMPONENTS(SHENZHEN) Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130821 |
|
| CX01 | Expiry of patent term |