CN110131182A - Double axial-flow centrifugal fans are set in one kind - Google Patents
Double axial-flow centrifugal fans are set in one kind Download PDFInfo
- Publication number
- CN110131182A CN110131182A CN201910508660.3A CN201910508660A CN110131182A CN 110131182 A CN110131182 A CN 110131182A CN 201910508660 A CN201910508660 A CN 201910508660A CN 110131182 A CN110131182 A CN 110131182A
- Authority
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- China
- Prior art keywords
- output shaft
- air duct
- dual
- shaft motor
- fan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 241000883990 Flabellum Species 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 2
- 239000000779 smoke Substances 0.000 description 12
- 235000019504 cigarettes Nutrition 0.000 description 5
- 239000004519 grease Substances 0.000 description 5
- 230000009977 dual effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 241001582888 Lobus Species 0.000 description 2
- 230000004323 axial length Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 1
- 125000001475 halogen functional group Chemical group 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/002—Axial flow fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
- F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
- F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
- F04D29/283—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis rotors of the squirrel-cage type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/403—Casings; Connections of working fluid especially adapted for elastic fluid pumps
Abstract
The invention discloses double axial-flow centrifugal fans are set in one kind, including Dual-output shaft motor, air duct, centrifugal impeller and fan, the central location of the air inlet in the air duct is arranged in the Dual-output shaft motor, and the centrifugal impeller and the fan rotated coaxially is successively respectively arranged in the output axis direction of Dual-output shaft motor two sides；The present invention in the middle part of air duct by being arranged the cooperation of dual-axle motor and impeller and fan so that air duct two sides are entered the wind uniformly.
Description
Technical field
The present invention relates to range hood fan fields, and double axial-flow centrifugal fans are especially set in one kind.
Background technique
The blower that current range hood uses in the prior art is essentially forward multi blade centrifugal fans, fixes in air duct side
Motor, on motor shaft, impeller is driven by motor and is rotated impeller set, and impeller makes gas obtain energy (static pressure air work
And kinetic energy), air-flow enters axially into impeller and turns to by the effect air-flow of centrifugal blower, radial to pass through wind under the action of the centrifugal
Air-flow is discharged machine air outlet.This blower fan structure, each producer is essentially the same, and homogeneity is serious, and motor is fixed on wind
Road side occupies the incoming air area of air duct side, seriously affects the performance in air duct.
Summary of the invention
In view of the problems of the existing technology, the purpose of the present invention is to provide double axial-flow centrifugal fans are set in one kind, lead to
The cooperation that dual-axle motor and impeller and fan are set is crossed in the middle part of air duct so that air duct two sides air inlet is uniform.
To achieve the above object, technical solution of the present invention is as follows:
Double axial-flow centrifugal fans, including Dual-output shaft motor, air duct, centrifugal impeller and fan, the dual output are set in one kind
The central location of the air inlet in the air duct is arranged in spindle motor, successively divides in the output axis direction of Dual-output shaft motor two sides
It is not provided with the centrifugal impeller and the fan rotated coaxially.
Further, plate in air duct is provided in the middle part of the air inlet in the air duct.
Further, plate integrally separates in air duct into two in the air duct.
Further, the Dual-output shaft motor is fixed in the air duct on plate.
Further, two identical centrifugal impellers are symmetricly set on the two sides output shaft of the Dual-output shaft motor
On, the reel of the centrifugal impeller is socketed on the output shaft of the Dual-output shaft motor.
Further, the fan is aerofoil fan, and two identical aerofoil fans are symmetricly set on the dual output
On the two sides output shaft of spindle motor, it is separately positioned on the outside of the two sides air inlet in the air duct.
Further, several flabellums are radially provided on the wheel disc of the centrifugal impeller, the flabellum is described in
The output axis direction of Dual-output shaft motor extends to the air inlet outside in the air duct.
Further, the two sides output shaft end of the Dual-output shaft motor is provided with nut cap.
Further, air inlet ring is provided on the outside of the two sides air inlet in the air duct.
Further, the Dual-output shaft motor is external rotor electric machine.
The present invention sets double axial-flow centrifugal fans by being arranged in one kind, and Dual-output shaft motor is arranged in air duct center, passes through
Motor drives the centrifugal impeller and fan that motor two sides in air inlet of air duct are arranged in, and realizes the air inlet air inlet of air duct two sides
Uniformly, reduce air duct side air inlet is influenced by motor, improves the air-suction performance of blower, and fan and centrifugal impeller are matched
It closes, increases the negative pressure region area of air inlet of air duct, increase air inlet holds together cigarette range, under the premise of air quantity is constant,
Effectively improve the effect of fume-exhausting；And compared to the blower of a centrifugal impeller, centrifugal impeller in air inlet of air duct
Axial length is long, and oil smoke flows radially out after entering axially into centrifugal impeller, so that centrifugal impellers blades are in the longitudinal direction
Effective rate of utilization is lower, and after two centrifugal impellers are arranged, the effective rate of utilization of centrifugal impellers blades in the longitudinal direction is mentioned
Height, and centrifugal impeller shortens in the axial direction, when rotation, are more steady.Meanwhile during blower work, oil smoke first passes through wind
Fan, oil smoke air-flow and electric fan collide, and have isolated part greasy dirt, this part greasy dirt is thrown in the shell of kitchen ventilator by fan
Portion eventually flows in oil collection box, and remaining oil smoke is separated by centrifugal impeller, improves the grease separating degree of blower.
In currently preferred technical solution, fan uses aerofoil fan, and the outer of air inlet of air duct is arranged in aerofoil fan
Side, for aerofoil fan during blower works, can further promote blower holds together cigarette ability, and auxiliary centrifugal impeller will be more
Oil smoke is drawn into air duct.
Detailed description of the invention
Fig. 1 is explosive view of the present invention；
Fig. 2 is sectional view of the present invention.
Specific embodiment
In the description of the present invention, it is to be understood that, term " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ",
The orientation of the instructions such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" or
Positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as limitation of the present invention.In the description of the present invention, the meaning of " plurality " is two or more, unless otherwise
Clear specific restriction.
To clearly demonstrate design philosophy of the invention, below with reference to example, the present invention will be described.
Double axial-flow centrifugal fans, including Dual-output shaft motor, air duct, centrifugal impeller and fan are set in one kind, it is described double
Output spindle motor be arranged in the air duct air inlet central location, in the output axis direction of Dual-output shaft motor two sides according to
It is secondary to be respectively arranged with the centrifugal impeller and the fan.
In order to which what is be more clear is illustrated the technical solution in the present invention, carried out in the form of specific embodiment below
Explanation.
Embodiment one
As shown in Figure 1 and Figure 2, set double axial-flow centrifugal fans in one kind, including Dual-output shaft motor 8, air duct 6, centrifugal impeller and
The central location of the air inlet in the air duct 6 is arranged in fan, the Dual-output shaft motor 8, along 8 two sides of Dual-output shaft motor
The centrifugal impeller and the fan are successively respectively arranged in output axis direction.
In above-mentioned example, the present invention sets double axial-flow centrifugal fans by being arranged in one kind, in 6 center setting dual output of air duct
Spindle motor 8, Dual-output shaft motor 8 uses external rotor electric machine in this example, is arranged in the air inlet in air duct 6 by motor drive
The left centrifugal impeller in the 4 of motor two sides, right centrifugal impeller 9 and fan, the air inlet air inlet for realizing 6 two sides of air duct uniformly, are reduced
Air duct 6 side air inlet is influenced by motor, improves the air-suction performance of blower, the cooperation of fan and centrifugal impeller, in electricity
Machine drives lower coaxial synchronized rotation, increases the negative pressure region area of air inlet of air duct, and increase air inlet holds together cigarette range,
Under the premise of air quantity is constant, the effect of fume-exhausting is effectively improved.And compared to the blower of a centrifugal impeller, centrifugal impeller
The axial length in air inlet of air duct it is long, oil smoke flows radially out after entering axially into centrifugal impeller, so that centrifugal impeller
Effective rate of utilization is lower in the longitudinal direction by blade 9-2, and after two centrifugal impellers are arranged, centrifugal impellers blades 9-2 is in length side
Upward effective rate of utilization is improved, and centrifugal impeller shortens in the axial direction, and when rotation is more steady.
Meanwhile during blower work, oil smoke first passes through fan, and oil smoke air-flow and electric fan are collided, isolated
Part greasy dirt, this part greasy dirt are thrown to the enclosure interior of kitchen ventilator by fan, eventually flow in oil collection box, remaining oil smoke by from
Lobus cardiacus wheel is separated, and the grease separating degree of blower is improved.
As shown in Figure 1, being welded with plate 5 in air duct in air duct 6,6 entirety of air duct is split into two halves by plate 5 in air duct, wind
Air inlet center portion of the plate 5 in air duct 6 is equipped with the through-hole for accommodating Dual-output shaft motor 8 in road, and Dual-output shaft motor 8 is circumferential
Setting is fixed on convex block there are four fixed convex block and is provided with tapped through hole, Dual-output shaft motor 8 is screwed part and is fixed on
In air duct on plate 5.Centrifugal impeller and aerofoil fan are sequentially installed with along axial direction on two output shafts of Dual-output shaft motor 8, two
The reel 9-1 of a identical centrifugal impeller is symmetrically socketed on the output shaft of 8 two sides of dual-output motor, the blade 9- of centrifugal impeller
1 length and the half of 6 air inlet width of air duct；It is symmetrical on the output shaft of Dual-output shaft motor 8 on the basis of centrifugal impeller
Left axle flow fan 3 and right axle flow fan 10 are installed, the centre of aerofoil fan is socketed on output shaft, and aerofoil fan is whole
The outside of the two sides air inlet in air duct 6 is set；There are two nut caps for the two sides output shaft end symmetrical setting of Dual-output shaft motor 8
2, aerofoil fan and centrifugal impeller are fixed on the output shaft of motor by nut cap 2, are prevented during blower works, axis stream wind
Fan and centrifugal impeller are rotated unstable or even are fallen off.
In above-mentioned example, aerofoil fan is arranged in the outside of air inlet of air duct, aerofoil fan during blower works,
Blower can further be promoted holds together cigarette ability, and more oil smoke are drawn into air duct 6 by auxiliary centrifugal impeller.
Circumferentially be provided with screw hole on shell on the outside of 6 air inlet of air duct, internal diameter it is identical with the internal diameter of air inlet of air duct into
Solar or lunar halo 1 is fixed by screws on the outside shell of 6 air inlet of air duct, by the wheel disc of centrifugal impeller gear 6 air inlet of air duct it
In, it is further ensured that the stability of centrifugal impeller rotation.
As shown in Figure 1, being provided with air outlet above air duct 6, check-valves 7 has been screwed in air outlet.
Embodiment two
Double axial-flow centrifugal fans, including Dual-output shaft motor 8, air duct 6, centrifugal impeller and fan, the lose-lose are set in one kind
The central location of the air inlet in the air duct 6 is arranged in output shaft electric machine 8, in the output axis direction of 8 two sides of Dual-output shaft motor
Successively it is respectively arranged with centrifugal impeller and fan, wherein four are radially provided on the wheel disc of the centrifugal impeller
Flabellum, the flabellum extend along the output axis direction of the Dual-output shaft motor 8 to the air inlet outside in the air duct.
In the present embodiment, fan is wholely set with centrifugal impeller, blade rotation when blower works, on the wheel disc of centrifugal impeller
Turn to form negative pressuren zone in the air inlet of 6 two sides of air duct, be connected to flabellum on the wheel disc outer ledge of centrifugal impeller with from
The rotation of lobus cardiacus wheel and rotate, four integrally formed fans of flabellum play the role of expand air inlet of air duct in negative pressuren zone, energy
Enough promote blower holds together cigarette range, by loss in the oil smoke sucking air duct 6 in kitchen ventilator shell；Equally, this four flabellum
The grease that can be separated one step ahead in oil smoke is set, and auxiliary centrifugal impeller separates grease, improves the grease separating degree of blower.
It should be noted that some of which structure can have different selections other than the above-mentioned specific example provided.
Such as, motor of the invention can also use other types of Dual-output shaft motor other than using external rotor electric machine；In air duct
Plate and air duct are connected and fixed mode in addition to welding in air duct, can also be screwed part and be fixed；Etc., and these
All it is that those skilled in the art can make on the basis of understanding inventive concept based on its basic skills, therefore herein no longer
It enumerates.
Finally, it will be appreciated that the principle that embodiment of above is intended to be merely illustrative of the present and the example that uses
Property embodiment, however the present invention is not limited thereto.For those of ordinary skills, do not depart from it is of the invention
In the case where principle and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection model of the invention
It encloses.
Claims (10)
1. setting double axial-flow centrifugal fans in one kind, which is characterized in that including Dual-output shaft motor, air duct, centrifugal impeller and wind
The central location of the air inlet in the air duct is arranged in fan, the Dual-output shaft motor, the output along Dual-output shaft motor two sides
The centrifugal impeller and the fan rotated coaxially is successively respectively arranged in axis direction.
2. setting double axial-flow centrifugal fans in as described in claim 1, which is characterized in that setting in the middle part of the air inlet in the air duct
There is plate in air duct.
3. setting double axial-flow centrifugal fans in as claimed in claim 2, which is characterized in that plate integrally divides in air duct in the air duct
It is separated in two.
4. setting double axial-flow centrifugal fans in as claimed in claim 3, which is characterized in that the Dual-output shaft motor is fixed on institute
It states in air duct on plate.
5. setting double axial-flow centrifugal fans in as described in claim 1, which is characterized in that two identical centrifugal impellers pair
Title is arranged on the two sides output shaft of the Dual-output shaft motor, and the reel of the centrifugal impeller is socketed in the double output shaft electricity
On the output shaft of machine.
6. setting double axial-flow centrifugal fans in as described in claim 1, which is characterized in that the fan is aerofoil fan, two
The identical aerofoil fan is symmetricly set on the two sides output shaft of the Dual-output shaft motor, is separately positioned on the air duct
Two sides air inlet outside.
7. setting double axial-flow centrifugal fans in as described in claim 1, which is characterized in that edge on the wheel disc of the centrifugal impeller
Radial direction is provided with several flabellums, the flabellum along the Dual-output shaft motor air inlet from output axis direction to the air duct
Extend on the outside of mouthful.
8. setting double axial-flow centrifugal fans in as described in claim 1, which is characterized in that the two sides of the Dual-output shaft motor are defeated
Shaft end is provided with nut cap out.
9. setting double axial-flow centrifugal fans in as described in claim 1, which is characterized in that on the outside of the two sides air inlet in the air duct
It is provided with air inlet ring.
10. setting double axial-flow centrifugal fans in as described in claim 1, which is characterized in that the Dual-output shaft motor is outer turns
Sub-motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910508660.3A CN110131182A (en) | 2019-06-13 | 2019-06-13 | Double axial-flow centrifugal fans are set in one kind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910508660.3A CN110131182A (en) | 2019-06-13 | 2019-06-13 | Double axial-flow centrifugal fans are set in one kind |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110131182A true CN110131182A (en) | 2019-08-16 |
Family
ID=67581256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910508660.3A Pending CN110131182A (en) | 2019-06-13 | 2019-06-13 | Double axial-flow centrifugal fans are set in one kind |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110131182A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111307679A (en) * | 2020-03-10 | 2020-06-19 | 淮阴师范学院 | Bookshelf environment detector |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1253188A (en) * | 1985-11-08 | 1989-04-25 | Rolf Muller | Axial-flow fan |
| JP2000074410A (en) * | 1998-09-03 | 2000-03-14 | Daikin Ind Ltd | Double suction centrifugal fan and air supplying apparatus provided therewith |
| CN2648123Y (en) * | 2003-09-15 | 2004-10-13 | 海尔集团公司 | Single-electric machine double-vane fan |
| CN103375440A (en) * | 2012-04-26 | 2013-10-30 | 杨丁平 | Bladeless fan |
| CN203548268U (en) * | 2013-10-29 | 2014-04-16 | 温岭市大洋电器厂 | Two-way air inlet centrifugal fan |
| WO2014153748A1 (en) * | 2013-03-28 | 2014-10-02 | 无锡小天鹅股份有限公司 | Centrifugal fan and clothes dryer having same |
| WO2015161600A1 (en) * | 2014-04-22 | 2015-10-29 | 广东净霸科技有限公司 | Air-purifier performing dual-sided filtration of intake air and with filter mesh of large air-contact area |
| CN205243884U (en) * | 2015-11-07 | 2016-05-18 | 上海兰桥风机有限公司 | Bilobed wheel centrifugal fan |
| DE202017101550U1 (en) * | 2017-03-17 | 2017-05-29 | Meltem Wärmerückgewinnung GmbH & Co. KG | breather |
| DE202018106504U1 (en) * | 2018-11-16 | 2019-01-14 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Compact diagonal fan with tracking device |
| CN210164667U (en) * | 2019-06-13 | 2020-03-20 | 杭州老板电器股份有限公司 | Centrally-mounted double-axial-flow centrifugal fan |
-
2019
- 2019-06-13 CN CN201910508660.3A patent/CN110131182A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1253188A (en) * | 1985-11-08 | 1989-04-25 | Rolf Muller | Axial-flow fan |
| JP2000074410A (en) * | 1998-09-03 | 2000-03-14 | Daikin Ind Ltd | Double suction centrifugal fan and air supplying apparatus provided therewith |
| CN2648123Y (en) * | 2003-09-15 | 2004-10-13 | 海尔集团公司 | Single-electric machine double-vane fan |
| CN103375440A (en) * | 2012-04-26 | 2013-10-30 | 杨丁平 | Bladeless fan |
| WO2014153748A1 (en) * | 2013-03-28 | 2014-10-02 | 无锡小天鹅股份有限公司 | Centrifugal fan and clothes dryer having same |
| CN203548268U (en) * | 2013-10-29 | 2014-04-16 | 温岭市大洋电器厂 | Two-way air inlet centrifugal fan |
| WO2015161600A1 (en) * | 2014-04-22 | 2015-10-29 | 广东净霸科技有限公司 | Air-purifier performing dual-sided filtration of intake air and with filter mesh of large air-contact area |
| CN205243884U (en) * | 2015-11-07 | 2016-05-18 | 上海兰桥风机有限公司 | Bilobed wheel centrifugal fan |
| DE202017101550U1 (en) * | 2017-03-17 | 2017-05-29 | Meltem Wärmerückgewinnung GmbH & Co. KG | breather |
| DE202018106504U1 (en) * | 2018-11-16 | 2019-01-14 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Compact diagonal fan with tracking device |
| CN210164667U (en) * | 2019-06-13 | 2020-03-20 | 杭州老板电器股份有限公司 | Centrally-mounted double-axial-flow centrifugal fan |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111307679A (en) * | 2020-03-10 | 2020-06-19 | 淮阴师范学院 | Bookshelf environment detector |
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