CN208123119U - Centrifugal fan and self-ventilated machine - Google Patents
Centrifugal fan and self-ventilated machine Download PDFInfo
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- CN208123119U CN208123119U CN201820593751.2U CN201820593751U CN208123119U CN 208123119 U CN208123119 U CN 208123119U CN 201820593751 U CN201820593751 U CN 201820593751U CN 208123119 U CN208123119 U CN 208123119U
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- centrifugal fan
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- wind deflector
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Abstract
The utility model provides a kind of centrifugal fan and self-ventilated machine, and the centrifugal fan includes a sleeve, multiple blades and a wind deflector, wherein：The inside of the sleeve has the axis hole passed through for shaft, and the multiple blade is evenly distributed on the outer wall of the sleeve and respectively being arranged radially along the sleeve；The rear end of the multiple blade is respectively fixed to the front side surface of the wind deflector；The wind deflector has cricoid ventilation hole around the sleeve between the wind deflector and sleeve；At least part of the multiple blade is located in the ventilation hole, and gap of the air-flow across the ventilation hole and blade on rear side of the wind deflector reaches the front end of the centrifugal fan, and the front end of the centrifugal fan is opening.The utility model prevents air-flow from escaping from centrifugal fan axial forward end by removing the wind deflector of vane nose by end cap, may make the structure of centrifugal blower more compact.
Description
Technical field
The utility model relates to motor fields, more specifically to a kind of centrifugal fan and self-ventilated machine.
Background technique
Using electric energy as the vehicle of power source, the powered traction system driving being usually made of controller and traction electric machine is gone
It sails.With conventional fuel oil vehicle comparatively, above-mentioned electric vehicle has many advantages, such as zero-emission, pollution-free, energy saving, consumption reduction, environmental protection.
As the power-driven system of electric vehicle core, including controller and traction electric machine, the vehicle method of operation, running environment, skill
The particularity of art performance, which is determined, has particular/special requirement to traction electric machine, for example, require the frequent frequent start-stop of motor, interval work,
Revolving speed is low, torque is big, has that speed-regulating range width, overload capacity is big, rotary inertia is small, cooling heat radiation system is excellent, small in size, again
Measure the features such as light.
The traction electric machine being currently running in the speed-regulating systems of the electric vehicle in fields such as harbour, guide rail electric car includes from logical
Wind turbine and water-cooled machine, wherein self-ventilated machine is usually realized by centrifugation cooling fan and is radiated.As shown in Figure 1, it is above-mentioned from
In ventilation motor 1, by be centrifuged cooling fan blade 101 stir air rotation, and make air rotate after centrifugal force work
It is dished out with the lower radial outside to blade 101, to realize heat dissipation.In above-mentioned centrifugation cooling fan, in order to avoid air to
The axial sides of blade 101 are escaped, and are respectively equipped with lateral wall 102 (outer wind deflector) and inner sidewall in the axial sides of blade 101
103 (interior wind deflectors).But above-mentioned lateral wall and inner sidewall need to occupy the axial space of self-ventilated machine 1, are unfavorable for pursuing
Overall compact trend.
Utility model content
The technical problem to be solved by the present invention is to occupy sky for cooling fan is centrifuged in above-mentioned self-ventilated machine
Between larger problem, the centrifugal fan and self-ventilated machine of a kind of type are provided.
The technical solution that the utility model solves above-mentioned technical problem is to provide a kind of centrifugal fan, including a sleeve,
Multiple blades and a wind deflector, wherein：The inside of the sleeve has the axis hole passed through for shaft, and the multiple blade is equal
The even outer wall for being distributed in the sleeve and respectively being arranged radially along the sleeve；The rear end of the multiple blade is respectively fixed to
The front side surface of the wind deflector；The wind deflector has cricoid around the sleeve, and between the wind deflector and sleeve
Ventilation hole；At least part of the multiple blade is located in the ventilation hole, and the air-flow on rear side of the wind deflector passes through
Gap between the ventilation hole and blade reaches the front end of the centrifugal fan, and the front end of the centrifugal fan is opening.
In centrifugal fan described in the utility model, the front end of the sleeve has horn opening, and the multiple
At least part of the front end of blade is located on the outside of the horn opening.
In centrifugal fan described in the utility model, the diameter at the edge of the horn opening is greater than the ventilation hole
Internal diameter, and the diameter that the horn opening guides the centrifugal fan by the air-flow in ramp shaped outer wall self-ventilation in future hole is outside
Side.
In centrifugal fan described in the utility model, the rear edge of the blade includes the segmental arc and straight line to connect
Section, wherein：The straightway is close to the root of the blade, and the straightway is located in the ventilation hole；The wind deflector
Leading flank be fixed on arc segment.
The fixing piece for fixed rotating shaft is equipped in centrifugal fan described in the utility model, in the sleeve.
The utility model also provides a kind of self-ventilated machine, including shell, end cap, stator, rotor, the self-ventilation blower
It further include centrifugal fan as described above, and the centrifugal fan is arranged close to the end cap；The shaft of the rotor passes through institute
It states sleeve and is fixedly connected with the sleeve, and the heat release hole of the outer ledge with blade described in face on the shell.
In self-ventilated machine described in the utility model, the shape of the medial surface of the end cap and the multiple blade
The shape of the surfaces of revolution of front end is adapted.
In self-ventilated machine described in the utility model, each section and the surfaces of revolution on the medial surface of the end cap
The distance of corresponding position is less than or equal to 5mm.
The centrifugal blower and self-ventilated machine of the utility model have the following technical effects：By the gear for removing vane nose
Aerofoil, and prevent air-flow from escaping from centrifugal blower axial forward end by end cap, it may make the structure of centrifugal blower more compact.This reality
With the novel axial length for helping to shorten self-ventilated machine, make self-ventilated machine more compact；Or same axial long
Degree is lower to increase the vane size, to increase ventilation quantity.
Detailed description of the invention
Fig. 1 is the schematic diagram of traditional self-ventilated machine；
Fig. 2 is the schematic diagram of the utility model centrifugal fan embodiment；
Fig. 3 is the schematic diagram of another angle of the utility model centrifugal fan embodiment；
Fig. 4 is the partial cutaway schematic of the utility model centrifugal fan embodiment；
Fig. 5 is the schematic diagram of the utility model self-ventilated machine embodiment.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
It as in Figure 2-4, is the schematic diagram of the utility model centrifugal fan embodiment, which can be applied to from logical
Traction electric machine etc. in wind turbine, such as electric vehicle, and realize the heat dissipation of stator and rotor.Centrifugal fan in the present embodiment
2 include a sleeve 20, multiple blades 21 and a wind deflector 23, can be equipped with consolidating for fixed rotating shaft in above-mentioned sleeve 20
Determine structure, such as fixation hole etc..
Above-mentioned sleeve 20 is whole to be cylindrical in shape, the axis hole 201 that there is power supply machine shaft to pass through for inside.Blade 21 is plate
Shape, multiple blades 21 are evenly distributed on the outer wall of sleeve 20, and the root of multiple blade 21 is (i.e. close to the axle center of sleeve 20
Position) it is separately fixed on the outer wall of sleeve 20.
Above-mentioned multiple blades 21 being arranged radially along sleeve 20 respectively, and multiple blade 21 rear end (in the present embodiment,
It is before rear, axial right side is with the axial left side of Fig. 2 middle sleeve 20) it is respectively fixed to the front side surface of wind deflector 23.On
Wind deflector 23 is stated around sleeve 20, and there is cricoid ventilation hole 24 between wind deflector 23 and sleeve 20.Multiple blades 21 are extremely
Few a part (i.e. close to the part of the root of blade 21) is located in ventilation hole 24, and the air-flow from 23 rear side of wind deflector passes through logical
Gap between air holes 24 and blade 21 reaches the front end of centrifugal fan 2, and the front end of centrifugal fan 2 is opening, i.e. leaf
The front end of piece 21 is not set to have the baffle or side wall for stopping axial flow.
Since above-mentioned centrifugal fan 2 only remains the wind deflector 23 of rear end, and the wind shielding structure of front end is eliminated, therefore should
The whole axial length of centrifugal fan 2 opposite can reduce.And after removing the wind shielding structure of front end, centrifugal fan can be simplified
Manufacturing process, such as can be fabricated using two casees sand casting or stress metal forging type.
To make above-mentioned centrifugal fan 2 have preferable ventilation effect, the front end of above-mentioned sleeve 20 has horn opening, i.e.,
Diameter gradually reduces from front to back for the front end of sleeve 20, as shown in Figure 4.At least part of the front end of multiple blades 21 is (i.e. remote
The part of root from blade 21) it is located on the outside of horn opening.Also, the diameter at the edge of above-mentioned horn opening is greater than logical
The internal diameter of air holes 24.The outer wall of above-mentioned horn opening is in ramp shaped, so as to pass through the gas in ramp shaped outer wall self-ventilation in future hole 24
Stream guides the radial outside (i.e. the end in the outside of blade 21) of centrifugal fan 2 into.
Particularly, rear end (i.e. the right side of Fig. 4) edge of above-mentioned blade 21 includes the segmental arc and straightway to connect, wherein
Straightway is close to the root of blade 21, and segmental arc is then close to the radial outside of blade 21.Above-mentioned straightway is located at ventilation hole
In 24, and the leading flank of wind deflector 23 is then fixed on the arc segment of blade 21.With this configuration, convenient for will be from the high temperature of motor
Air-flow is introduced into centrifugal fan 2, and the radial direction by the rotation of blade 21 by high temperature gas flow along motor is thrown away.And due to keeping out the wind
The presence of plate 23 can avoid high temperature gas flow along the axial direction of motor and flow to stator and rotor portion again.
As shown in figure 5, being the schematic diagram of the utility model self-ventilated machine embodiment, which can be electronic
Traction electric machine etc. in vehicle.The self-ventilated machine of the present embodiment includes that shell 3, end cap 4, stator 5, rotor 6, and stator 5 are solid
It is scheduled on the inner wall of shell 3, rotor 6 includes shaft 61, and the both ends of shaft 61 pass through bearing respectively and are fixed on end cap 4 and shell 3
On.The self-ventilated machine further includes centrifugal fan 2 as in Figure 2-4, and the centrifugal fan 2 is arranged close to end cap 4.Above-mentioned turn
The shaft 61 of son 6 passes through above-mentioned sleeve 20 and is fixedly connected with above-mentioned sleeve 20, and sleeve 20 follows shaft 61 to rotate.In shell
On 3, also there is the heat release hole 31 of the outer ledge of the blade 21 of face centrifugal fan 2.
At work, centrifugal fan 2 drives in shaft 61 to be rotated above-mentioned self-ventilated machine, and blade 21 will be flowed by ventilation hole 24
The radial direction of the High Temperature Gas flow direction motor entered is thrown away, and is discharged outside motor by heat release hole 31, and wind deflector 23 and end cap 4 respectively can
Prevent high temperature gas flow from escaping along the axial direction of motor.Centrifugal fan 2, can be by increasing blade after removing the wind deflector of front end
Axial width improves ventilation quantity (axial width of ventilation quantity and blade is in a linear relationship), to improve complete machine heat dissipation effect
Fruit preferably controls temperature rise；Or the axial length of self-ventilated machine can be shortened, make self-ventilated machine more compact.
For the axial escape for preferably avoiding air-flow, the shape of the medial surface of end cap 4 and the front end of multiple blades 21 can be made
The shape of the surfaces of revolution be adapted.Also, each section on the medial surface of end cap 4 can be made small at a distance from the corresponding position of the surfaces of revolution
In or equal to 5mm.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should
It is subject to the protection scope in claims.
Claims (8)
1. a kind of centrifugal fan, which is characterized in that including a sleeve, multiple blades and a wind deflector, wherein：The set
The inside of cylinder has the axis hole passed through for shaft, and the multiple blade is evenly distributed on the outer wall of the sleeve and respectively along described
Sleeve is arranged radially；The rear end of the multiple blade is respectively fixed to the front side surface of the wind deflector；The wind deflector ring
Around the sleeve, and there is cricoid ventilation hole between the wind deflector and sleeve；At least part position of the multiple blade
In in the ventilation hole, gap of the air-flow across the ventilation hole and blade on rear side of the wind deflector reaches institute
The front end of centrifugal fan is stated, the front end of the centrifugal fan is opening.
2. centrifugal fan according to claim 1, which is characterized in that the front end of the sleeve has horn opening, and
At least part of the front end of the multiple blade is located on the outside of the horn opening.
3. centrifugal fan according to claim 2, which is characterized in that the diameter at the edge of the horn opening is greater than institute
The internal diameter of ventilation hole is stated, and the horn opening guides the centrifugal fan by the air-flow in ramp shaped outer wall self-ventilation in future hole
Radial outside.
4. centrifugal fan according to claim 1, which is characterized in that the rear edge of the blade includes the arc to connect
Section and straightway, wherein：The straightway is close to the root of the blade, and the straightway is located in the ventilation hole；Institute
The leading flank for stating wind deflector is fixed on arc segment.
5. centrifugal fan according to claim 1, which is characterized in that be equipped with the fixation for fixed rotating shaft in the sleeve
Structure.
6. a kind of self-ventilated machine, including shell, end cap, stator, rotor, which is characterized in that the self-ventilation blower further includes
Centrifugal fan according to any one of claims 1 to 5, and the centrifugal fan is arranged close to the end cap；The rotor
Shaft passes through the sleeve and is fixedly connected with the sleeve, and the outer ledge with blade described in face on the shell
Heat release hole.
7. self-ventilated machine according to claim 6, which is characterized in that the shape of the medial surface of the end cap and described more
The shape of the surfaces of revolution of the front end of a blade is adapted.
8. self-ventilated machine according to claim 7, which is characterized in that on the medial surface of the end cap each section with it is described
The distance of the corresponding position of the surfaces of revolution is less than or equal to 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820593751.2U CN208123119U (en) | 2018-04-24 | 2018-04-24 | Centrifugal fan and self-ventilated machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820593751.2U CN208123119U (en) | 2018-04-24 | 2018-04-24 | Centrifugal fan and self-ventilated machine |
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| Publication Number | Publication Date |
|---|---|
| CN208123119U true CN208123119U (en) | 2018-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820593751.2U Active CN208123119U (en) | 2018-04-24 | 2018-04-24 | Centrifugal fan and self-ventilated machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474482A (en) * | 2019-08-19 | 2019-11-19 | 抚顺煤矿电机制造有限责任公司 | Wind path and water route Two-way Cycle cooling structure inside a kind of motor |
| CN114513103A (en) * | 2022-02-28 | 2022-05-17 | 沈阳工业大学 | Brushless permanent magnet torque motor for pumping unit and speed time-varying control method |
-
2018
- 2018-04-24 CN CN201820593751.2U patent/CN208123119U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474482A (en) * | 2019-08-19 | 2019-11-19 | 抚顺煤矿电机制造有限责任公司 | Wind path and water route Two-way Cycle cooling structure inside a kind of motor |
| CN114513103A (en) * | 2022-02-28 | 2022-05-17 | 沈阳工业大学 | Brushless permanent magnet torque motor for pumping unit and speed time-varying control method |
| CN114513103B (en) * | 2022-02-28 | 2023-09-15 | 沈阳工业大学 | Brushless permanent magnet torque motor for pumping unit and speed time-varying control method |
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