CN207018244U - Pressure fan - Google Patents
Pressure fan Download PDFInfo
- Publication number
- CN207018244U CN207018244U CN201720917749.1U CN201720917749U CN207018244U CN 207018244 U CN207018244 U CN 207018244U CN 201720917749 U CN201720917749 U CN 201720917749U CN 207018244 U CN207018244 U CN 207018244U
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- China
- Prior art keywords
- pressure fan
- impeller
- peripheral part
- connecting member
- peripheral portion
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 98
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 230000002411 adverse Effects 0.000 description 5
- 230000003068 static effect Effects 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000007664 blowing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model provides a kind of pressure fan, has：Impeller, it is around the central axis rotation extended up and down；And housing, it stores the impeller, the impeller has substrate and in the multiple blade being circumferentially configured at predetermined intervals on the substrate, the upper surface of the housing covers the top of the impeller, and it is provided with the air inlet penetrated vertically, the side face of the housing is covered around the impeller, and is provided with the exhaust outlet radially penetrated, and the blade has：Peripheral part；And inner peripheral portion, it is configured to lean on radially inner side than the peripheral part, the inner peripheral portion protrudes upward than the peripheral part, connect in the circumferential the upper surface of the adjacent inner peripheral portion gap area be more than or equal to connect in the circumferential the adjacent peripheral part outer peripheral face gap area.
Description
Technical field
It the utility model is related to pressure fan.
Background technology
Existing pressure fan is disclosed in Japanese Patent Publication 2014-139412 publications.The pressure fan have around
Multiblade centrifugal blower, the spiral case with storage multiblade centrifugal blower of the central axis rotation extended up and down.In the upper of spiral case
Wall is provided with air suction inlet, and the side wall of spiral case is provided with Air blowing mouth.Multiblade centrifugal blower has around central axis
The hub portion of rotation and the multiple fins for being configured at hub portion at predetermined intervals in the circumferential.
In the pressure fan of said structure, when multiblade centrifugal blower rotates, air is flowed into snail via air suction inlet
The inside of shell.It is flowed into the air inside spiral case to be flowed between adjacent fin, being radially oriented outside along fin accelerates.Court
Air after accelerating to radial outside is blown out outward to the footpath of multiblade centrifugal blower, outer by being discharged to from Air blowing mouth
Portion.
But the pressure fan according to Japanese Patent Publication 2014-139412 publications, by the radial direction of airfoil
A part for the air of foreign side's discharge adverse current from the space between adjacent fin to radially inner side.Accordingly, there exist following problem：
The air drag caused by the air-flow of adverse current between adjacent fin is produced, the air-supply efficiency of pressure fan reduces.
Utility model content
For the purpose of the utility model can lift the pressure fan of air-supply efficiency to provide.
The pressure fan that the utility model illustrates has：Impeller, it is around the central axis rotation extended up and down；And housing,
It stores the impeller, multiple leaves that the impeller has substrate and is configured at predetermined intervals in the circumferential on the substrate
Piece, the upper surface of the housing covers the top of the impeller, and is provided with the air inlet penetrated vertically, the week of the housing
Face is covered around the impeller, and is provided with the exhaust outlet radially penetrated, and the blade has：Peripheral part；And inner circumferential
Portion, it is configured to lean on radially inner side than the peripheral part, and the inner peripheral portion protrudes upward than the peripheral part, in the circumferential
Connect the gap of the upper surface of the adjacent inner peripheral portion area be more than or equal to connect the adjacent peripheral part in the circumferential
Outer peripheral face gap area.
According to the application illustrate an embodiment, the distance between the inner circumferential end of the inner peripheral portion and outer circumference end compare described in
The distance between the inner circumferential end of peripheral part and outer circumference end are big.
The embodiment illustrated according to the application, the impeller also have and the upper surface of the adjacent peripheral part
The connecting member for the ring-type that at least a portion links, the connecting member are configured in the radial outside on the peripheral part, institute
The length for stating the direction along the peripheral part of connecting member leans on footpath more than or equal to connecting member described in the ratio of the peripheral part
To the length of the part of inner side.
The embodiment illustrated according to the application, the internal diameter of the connecting member is more than the diameter of the air inlet.
The embodiment illustrated according to the application, the connecting member is with from outer circumference end towards inner circumferential end and to upside
Tilt.
The embodiment illustrated according to the application, the internal diameter of the connecting member is more than the external diameter of the substrate.
The embodiment illustrated according to the application, the housing have the loudspeaker extended downwards at the air inlet
Mouthful, the inner peripheral portion is projected in the horn mouth.
The embodiment illustrated according to the application, the inner peripheral portion are outside from the housing to axle via the air inlet
Side protrudes.
The embodiment illustrated according to the application, multiple exhaust outlets are set.
According to the utility model of illustration, using the teaching of the invention it is possible to provide the pressure fan of air-supply efficiency can be lifted.
Brief description of the drawings
Fig. 1 is the exploded perspective view for the pressure fan that embodiment of the present utility model is related to.
Fig. 2 is the top view of the inside for the pressure fan that embodiment of the present utility model is related to.
Fig. 3 is the side sectional view for the pressure fan that embodiment of the present utility model is related to.
Fig. 4 is the stereogram of the impeller for the pressure fan that embodiment of the present utility model is related to.
Fig. 5 is the top view of the impeller for the pressure fan that embodiment of the present utility model is related to.
Fig. 6 is the side view of the impeller for the pressure fan that embodiment of the present utility model is related to.
Fig. 7 is the side sectional view for the pressure fan that the first variation of embodiment of the present utility model is related to.
Fig. 8 is the side sectional view for the pressure fan that the second variation of embodiment of the present utility model is related to.
Embodiment
Hereinafter, while the utility model embodiment illustrated is described in detail on one side referring to the drawings.In addition, at this
In specification, by the direction parallel with the central axis C of pressure fan 1 be referred to as " axial direction ", by with the central axis C of pressure fan 1 just
The direction of friendship is referred to as " radial direction ", will be referred to as " circumference " along the direction of the circular arc centered on the central axis C of pressure fan 1.Together
Sample, for impeller 10, axial direction, radial direction and circumferential one in the state of entering in group into pressure fan 1 with pressure fan 1
The direction of cause is briefly referred to as " axial direction ", " radial direction " and " circumference ".In addition, in this manual, it will axially be set to upper and lower
To the side of air inlet 3 of housing 2 is set to relative to impeller 10, thus the shape and position relationship in each portion illustrated.Separately
Outside, above-below direction is only used for the title of explanation, does not limit actual position relationship and direction.
<1. the overall structure of pressure fan>
The pressure fan of the embodiment illustrated to the utility model illustrates.Fig. 1 is embodiment party of the present utility model
The exploded perspective view for the pressure fan 1 that formula is related to.Fig. 2 is the top view inside pressure fan 1.Fig. 3 is the side, sectional of pressure fan 1
Figure.Pressure fan 1 is equipped on various OA equipment, Medical Devices, Household Electrical product or transporting equipment etc..
Pressure fan 1 has impeller 10 and motor 50 in housing 2.Housing 2 is substantially cubic shaped, has cover portion
2a and incorporating section 2b.The air inlet 3 penetrated vertically is provided with cover portion 2a.In addition, cover portion 2a also has in air inlet 3
The horn mouth 31 of place's (incorporating section 2b sides) extension downwards.Cover portion 2a covers the top of impeller 10 in the outer circumferential side of air inlet 3.
Incorporating section 2b covers the opening of upper surface by cover portion 2a.Be provided with incorporating section 2b perisporium one or
Multiple exhaust outlets 4.Two exhaust outlets 4 are provided with the present embodiment.Exhaust outlet 4 radially penetrates incorporating section 2b, is configured at
Incorporating section 2b mutually orthogonal side.2b storages in incorporating section are around the impeller 10 and motor 50 of central axis C rotations, storage
Around portion 2b side face covering impeller 10.Motor 50 is installed on incorporating section 2b bottom surface.
Air inlet 3 is arranged to incorporating section 2b bottom surface alternatively, it is also possible to replace cover portion 2a, motor 50 is installed on
Cover portion 2a.That is, air inlet 3 and exhaust outlet 4 are appropriately arranged with for forming the part of housing 2.
The air flue 5 for linking air inlet 3 and exhaust outlet 4 is provided with housing 2, impeller 10 is configured in air flue
In 5.
That is, pressure fan 1 has the housing of the impeller 10 and storage impeller 10 around the central axis C rotations extended up and down
2.The top of impeller 10 is covered by the upper surface of the cover portion 2a housings 2 formed, and is provided with the air inlet 3 penetrated vertically.By
Around the side face covering impeller 10 for the housing 2 that incorporating section 2b is formed, and it is provided with the exhaust outlet 4 radially penetrated.
<2. the structure of impeller>
Fig. 4~Fig. 6 represents the stereogram, top view and side view of impeller 10 respectively.Impeller 10 have substrate 11 and
Multiple blades 12.Substrate 11 is formed as overlooking circular in shape by resin forming product.Substrate 11 central portion formed with
(side of air inlet 3) prominent protuberance 11a upward.Protuberance 11a upper surface is configured to lean on than the lower end of horn mouth 31
Top.
The motor 50 for being installed on incorporating section 2b bottom surface is configured in protuberance 11a inside.In protuberance 11a
The heart is provided with the through hole 11b of the axle portion 50a for being pressed into motor 50 (on central axis C).Thus, protuberance 11a and axle
Portion 50a links, and substrate 11 is supported to rotate centered on central axis C.In addition, as aftermentioned, pass through motor
Rotate counterclockwise is carried out during 50 driving 11 top view of substrate.
Multiple blades 12 and substrate 11 are integrally formed, and the plurality of blade 12 is configured at substrate 11 at predetermined intervals in the circumferential
On.The inner circumferential end of each blade 12 is configured to than outer circumference end by front of direction of rotation.Thus, each blade 12 is relative to radially inclining
Tiltedly.
Blade 12 has peripheral part 12b and is configured to lean on the inner peripheral portion 12a of radially inner side than peripheral part 12b.Inner peripheral portion
(side of air inlet 3) is prominent upward towards horn mouth 31 (reference picture 3) internal ratio peripheral part 12b by 12a.Peripheral part 12b compares horn mouth
31 is prominent to radial outside.
In addition, gap A1 (reference picture 4, Fig. 5) area is more than gap A2 (reference picture 4, Fig. 6) area.Gap A1
It is the gap for the upper surface for connecting adjacent inner peripheral portion 12a in the circumferential.Gap A2 is to connect adjacent peripheral part in the circumferential
The gap of 12b outer peripheral face.That is, the area on the end face of the air inlet side of blade 12 between adjacent inner peripheral portion 12a is in blade
It is more than the area on the end face of 12 exhaust sides between adjacent peripheral part 12b.
Distance L1 (reference picture 5) is longer than distance L2 (reference picture 5).Distance L1 is inner peripheral portion 12a inner circumferential end and inner peripheral portion
The distance between 12a outer circumference end.Distance L2 is the distance between peripheral part 12b inner circumferential end and peripheral part 12b outer circumference end.
In addition, formed must be shorter than distance L6 by distance L5.Distance L5 is between inner peripheral portion 12a inner circumferential end and protuberance 11a upper end
Radial direction distance.Distance L6 is that distance L1 is projected into distance obtained by radial direction.
Impeller 10 also has the connecting member 13 of ring-type, and connecting member 13 and adjacent peripheral part 12b upper surface is extremely
A few part links.Connecting member 13 is configured in the radial outside on peripheral part 12b, formed integrally with blade 12.Link
The internal diameter D2 (reference picture 3) of part 13 is more than the outer diameter D 3 (reference picture 3) of substrate 11.Thus, formed with across substrate 11
During with the impeller 10 of the blade 12 of connecting member 13, it can prevent upper/lower die (not shown) from interfering.Therefore, easily to axle
Mould is extracted respectively to upside and axial direction downside.Its result is, can by the integrally formed impeller 10 of mould, pressure fan 1
Production is lifted.
Length L3 (reference picture 5) is more than length L4 (reference picture 5).Length L3 is connecting member 13 along peripheral part
The length in 12b direction.Length L4 is length of the ratio connecting member 13 in peripheral part 12b by the part of radially inner side.In addition,
Diameter D1s (reference picture 3) more than of the internal diameter D2 (reference picture 3) of connecting member 13 in air inlet 3.
<3. the action of pressure fan>
In the pressure fan 1 of said structure, by drive motor 50, impeller 10 is rotated centered on central axis C.By
This, air is taken into the inside of housing 2 from air inlet 3.
It is taken between inner peripheral portion 12a of the air of the inside of housing 2 by adjacent blade 12, passes through the impeller of rotation
10 and be radially oriented outside accelerate.The air that outside accelerates is radially oriented between the peripheral part 12b of adjacent blade 12 to connect
Circulate between knot part 13 and substrate 11, blown out outward to the footpath of impeller 10.Blown out outward to the footpath of impeller 10
Air circulates between incorporating section 2b internal perisporium and impeller 10 and the outside of housing 2 is expelled to from exhaust outlet 4.
Now, protuberance 11a is protruded upward than the lower end of horn mouth 31.Also, inner peripheral portion 12a inner circumferential end and protrusion
The distance L5 ratios of radial direction between portion 11a upper end will distance L1 to project to distance L6 obtained by radial direction short.Therefore, from air inlet
The air that mouth 3 is flowed into housing 2 are imported between inner peripheral portion 12a from top.In addition, the inner peripheral portion 12a of blade 12 compares periphery
Portion 12b is protruded upward, and gap A1 area is more than gap A2 area.Therefore, the air importeding between inner peripheral portion 12a
Stream narrows between peripheral part 12b outer peripheral face.Thereby, it is possible to the blast for the air-flow S for making to circulate between adjacent blade 12 with
And air quantity increases, air-flow S adverse current can be prevented.Therefore, it is possible to lift the air-supply efficiency of pressure fan 1.
The cover portion 2a of housing 2 has the horn mouth 31 extended downwards at air inlet 3.Also, the inner circumferential of horn mouth 31
It is opposed with the inner peripheral portion 12a of blade 12 periphery side.Thus, even if being existed from the air-flow S sucked between adjacent inner peripheral portion 12a
Will be to circumferential extension flowing between adjacent inner peripheral portion 12a, air is by horn mouth 31 and by rectification downwards.Therefore, by slave phase
The air-flow S sucked between adjacent inner peripheral portion 12a can be towards the gap A2 for the outer peripheral face for connecting adjacent peripheral part 12b in the circumferential
Swimmingly circulate.
In addition, periphery is compared in inner peripheral portion 12a inner circumferential end with the distance between inner peripheral portion 12a outer circumference end L1 (reference picture 5)
The distance between portion 12b inner circumferential end and peripheral part 12b outer circumference end L2 (reference picture 5) are big.Thereby, it is possible in air inlet 3
Nearby the area of blade 12 is set to greatly.Therefore, the air quantity increase of pressure fan 1.
In addition, the length L3 (reference picture 5) in the direction along peripheral part 12b of connecting member 13 is more than or equal to peripheral part
Length L4 (reference picture 5) of the 12b ratio connecting member 13 by the part of radially inner side.Thus, suppressed by connecting member 13
The air-flow S to be circulated between the peripheral part 12b of adjacent blade 12 spreads upward.Therefore, it is possible to prevent air-flow S from connecting member
Adverse current between 13 upper direction blade 12.Therefore, the air-supply efficiency of pressure fan 1 is further lifted.
In addition, diameter D1s (reference picture 3) more than of the internal diameter D2 (reference picture 3) of connecting member 13 in air inlet 3.Thus,
It can prevent from colliding from the air-flow S that air inlet 3 sucks and connecting member 13 upper surface.Therefore, the air quantity sent out from exhaust outlet 4
Further increase.
<4. the first variation>
Alternatively, it is also possible to which the connecting member 13 of the impeller 10 of the pressure fan 1 of present embodiment is set into different structures.Such as
Shown in Fig. 7, connecting member 13 tilts with from outer circumference end towards inner circumferential end to upside (side of air inlet 3).Thus, adjacent
More roasting exhaust side stream is narrower between the peripheral part 12b of blade 12, by nozzle effect static pressure can be made to increase.Therefore, it is possible to
Air-flow S arrival distance is set to grow, and produces to block in air flue 5 and is also able to maintain that air quantity.
<5. the second variation>
In addition it is also possible to the inner peripheral portion 12a of the impeller 10 of the pressure fan 1 of present embodiment is set to different structures.Such as
Shown in Fig. 8 or inner peripheral portion 12a is prominent to axial upside (axially external) via cover portion 2a of the air inlet 3 than housing 2.
Thus, the static pressure near air inlet 3 is risen.Therefore, the air quantity sent out from pressure fan 1 further increases.
According to present embodiment, the inner peripheral portion 12a of blade 12 is protruded upward than peripheral part 12b, connects phase in the circumferential
The gap A1 of adjacent inner peripheral portion 12a upper surface area is more than or equal to the periphery for connecting adjacent peripheral part 12b in the circumferential
The gap A2 in face area.Therefore, the stream for importeding into the air between inner peripheral portion 12a is narrow between peripheral part 12b outer peripheral face.
Thus, the air-flow S to be circulated between adjacent blade 12 blast and air quantity increase, air-flow S adverse current can be prevented.Therefore,
The air-supply efficiency of pressure fan 1 is lifted.
In addition, the distance between inner peripheral portion 12a inner circumferential end and outer circumference end L1 are than peripheral part 12b inner circumferential end and outer circumference end
The distance between L2 it is big.Thereby, it is possible to be set to the area of the blade 12 near air inlet 3 greatly.Therefore, pressure fan 1 is sent out
Air quantity increase.
In addition, ratio connecting members 13 of the length L3 in the direction along peripheral part 12 of connecting member 13 in peripheral part 12b
By more than the length L4 of the part of radially inner side.Thus, the air-flow S to be circulated between the peripheral part 12b of adjacent blade 12 passes through
Connecting member 13 is inhibited by diffusion upward.Therefore, it is possible to prevent air-flow S between the upper direction blade 12 of connecting member 13
Countercurrently.Therefore, the air-supply efficiency of pressure fan 1 is further lifted.
In addition, the internal diameter D2 of connecting member 13 is more than the diameter D1 of air inlet 3.Thereby, it is possible to prevent from inhaling from air inlet 3
Collide the air-flow S entered and connecting member 13 upper surface.Therefore, the air quantity sent out from exhaust outlet 4 further increases.
In addition, outer diameter Ds more than 3 of the internal diameter D2 of connecting member 13 in substrate 11.Thus, formed have across substrate 11 with
During the impeller 10 of the blade 12 of connecting member 13, interfering for upper/lower die can be prevented.Therefore, easily to axially upside with
And axially mould is extracted in downside respectively.Its result is, can be by mould come integrally formed impeller 10, it is possible to increase pressure fan 1
Production.
In addition, housing 2 has at air inlet 3, the horn mouth 31 of (exhaust side) extension, inner peripheral portion 12a are projected to downwards
In horn mouth 31.Swimmingly it is taken into housing 2 thereby, it is possible to carry out rectification to air.Further, since blade 12 have than
Peripheral part 12b (air inlet side) prominent inner peripheral portion 12a, therefore also can be attached in air inlet 3 even if setting horn mouth 31 upward
The area of nearly increase blade 12, can increase the air quantity being taken into.
Further, since being provided with multiple exhaust outlets 4, therefore can easily realize while air quantity is ensured to multiple sides
To pressure fan 1 as submitting air.
Alternatively, it is also possible to being connecting member 13 with being rolled upwards tiltedly from outer circumference end towards inner circumferential end.Thus, adjacent
Blade 12 between cause by exhaust sidewind S stream it is narrower, by nozzle effect static pressure can be made to increase.Accordingly, it is capable to
It is enough to be set to grow by air-flow S arrival distance, and produce to block in air flue 5 and be also able to maintain that air quantity.
In addition it is also possible to be inner peripheral portion 12a via air inlet 3 from housing 2 to axially external prominent.Thereby, it is possible to make into
Static pressure near gas port 3 rises.Therefore, it is possible to further increase the air quantity of pressure fan 1.
Claims (9)
1. a kind of pressure fan, it has：
Impeller, it is around the central axis rotation extended up and down；And
Housing, it stores the impeller,
Multiple blades that the impeller has substrate and is configured at predetermined intervals in the circumferential on the substrate,
The upper surface of the housing covers the top of the impeller, and is provided with the air inlet penetrated vertically,
The side face of the housing is covered around the impeller, and is provided with the exhaust outlet radially penetrated,
Characterized in that,
The blade has：
Peripheral part；And
Inner peripheral portion, it is configured to lean on radially inner side than the peripheral part,
The inner peripheral portion protrudes upward than the peripheral part,
The area for connecting the gap of the upper surface of the adjacent inner peripheral portion in the circumferential is adjacent more than or equal to connecting in the circumferential
The peripheral part outer peripheral face gap area.
2. pressure fan according to claim 1, it is characterised in that
The distance between the inner circumferential end of the inner peripheral portion and outer circumference end than between the inner circumferential end of the peripheral part and outer circumference end away from
From big.
3. pressure fan according to claim 2, it is characterised in that
The impeller also has the connecting member of the ring-type linked with least a portion of the upper surface of the adjacent peripheral part,
The connecting member is configured in the radial outside on the peripheral part,
The length in the direction along the peripheral part of the connecting member is more than or equal to linking part described in the ratio of the peripheral part
Length of the part by the part of radially inner side.
4. pressure fan according to claim 3, it is characterised in that
The internal diameter of the connecting member is more than the diameter of the air inlet.
5. pressure fan according to claim 3, it is characterised in that
The connecting member rolls tiltedly upwards with from outer circumference end towards inner circumferential end.
6. pressure fan according to claim 3, it is characterised in that
The internal diameter of the connecting member is more than the external diameter of the substrate.
7. according to pressure fan according to any one of claims 1 to 6, it is characterised in that
The housing has the horn mouth extended downwards at the air inlet,
The inner peripheral portion is projected in the horn mouth.
8. pressure fan according to claim 7, it is characterised in that
The inner peripheral portion is via the air inlet from the housing to axially external prominent.
9. according to pressure fan according to any one of claims 1 to 6, it is characterised in that
It is provided with multiple exhaust outlets.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016190629A JP2018053804A (en) | 2016-09-29 | 2016-09-29 | Air blower |
| JP2016-190629 | 2016-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207018244U true CN207018244U (en) | 2018-02-16 |
Family
ID=61480859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720917749.1U Active CN207018244U (en) | 2016-09-29 | 2017-07-26 | Pressure fan |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2018053804A (en) |
| CN (1) | CN207018244U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112524090A (en) * | 2019-09-19 | 2021-03-19 | 日本电产株式会社 | Air supply device and electromechanical device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3907983B2 (en) * | 2000-09-05 | 2007-04-18 | エルジー エレクトロニクス インコーポレイティド | Turbo fan for air conditioner |
| DE202005015357U1 (en) * | 2004-10-09 | 2006-01-05 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Fan with a fan |
| JP5652863B2 (en) * | 2010-08-30 | 2015-01-14 | 日本電産サーボ株式会社 | Centrifugal fan |
| CN203756593U (en) * | 2013-12-31 | 2014-08-06 | 顿力集团有限公司 | High-efficient centrifugal wind wheel |
-
2016
- 2016-09-29 JP JP2016190629A patent/JP2018053804A/en not_active Ceased
-
2017
- 2017-07-26 CN CN201720917749.1U patent/CN207018244U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112524090A (en) * | 2019-09-19 | 2021-03-19 | 日本电产株式会社 | Air supply device and electromechanical device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2018053804A (en) | 2018-04-05 |
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