CN109854519B - Centrifugal fan of range hood - Google Patents
Centrifugal fan of range hood Download PDFInfo
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- CN109854519B CN109854519B CN201711237576.XA CN201711237576A CN109854519B CN 109854519 B CN109854519 B CN 109854519B CN 201711237576 A CN201711237576 A CN 201711237576A CN 109854519 B CN109854519 B CN 109854519B
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- sleeve
- range hood
- centrifugal fan
- peripheral wall
- wheel disc
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- 238000013016 damping Methods 0.000 claims abstract description 68
- 230000002093 peripheral effect Effects 0.000 claims abstract description 28
- 230000005540 biological transmission Effects 0.000 claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 12
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 description 9
- 238000009434 installation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000035939 shock Effects 0.000 description 3
- 241000886569 Cyprogenia stegaria Species 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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Abstract
The utility model relates to a centrifugal fan of a range hood, which comprises an impeller, a middle disc, a wheel disc, a motor, a transmission sleeve and a damping sleeve, wherein the transmission sleeve is lined on the inner wall of the damping sleeve and is fixed on an output shaft of the motor; the outer peripheral wall of the transmission sleeve is provided with at least two first connecting ribs which extend spirally from front to back, the inner peripheral wall of the damping sleeve is provided with a first connecting groove for the first connecting ribs to be embedded therein, the inner peripheral wall of the first connecting hole is provided with at least two second connecting ribs which extend spirally from front to back, the outer peripheral wall of the damping sleeve is provided with a second connecting groove for the second connecting ribs to be embedded therein, and the spiral directions of the first connecting ribs and the second connecting ribs are the same. The structure effectively avoids displacement between the motor output shaft and the middle disc in the circumferential direction, and can balance vibration force of the root and the tail end of the motor output shaft, so that the fan rotates more stably, and further excellent vibration reduction and noise reduction effects are obtained.
Description
Technical Field
The utility model relates to the field of range hoods, in particular to a centrifugal fan of a range hood with low vibration and noise.
Background
At present, the range hood is one of the indispensable kitchen equipment of ordinary family, and the range hood is when the operation, all is through fan operation to inhale the range hood, and fan system's vibration and noise mainly derive from the pneumatic noise that the impeller produced when rotating, and the mechanical vibration noise that the air current is unstable, impeller dynamic balance is not good etc.. In order to reduce noise generated during operation of a fan system, in the existing range hood fan system, because the impeller is rigidly connected with the impeller middle disc, the impeller middle disc is rigidly connected with the motor shaft, and the whole fan system always realizes a damping effect through a damping pad between the motor and the shell.
The Chinese patent publication No. CN204126974U discloses a damping structure of a fan of a range hood (application No. CN 201420542422.7), which comprises a fan shell, a motor, an impeller and an impeller middle disc, wherein the motor is fixed on the fan shell, the impeller is fixed with the impeller middle disc, the damping structure also comprises a supporting ring and a damping ring, the supporting ring is lined on the inner wall of the damping ring and fixed on an output shaft of the motor, and the damping ring is clamped between the supporting ring and the inner ring of the middle disc. The range hood fan shock-absorbing structure of this structure is through setting up the damping ring and lining in the holding ring of damping ring inner wall, and the damping ring is pressed from both sides between holding ring and impeller center plate for can realize the shock attenuation effect through the damping ring between impeller and the motor, thereby reduce greatly because the air current is unstable, impeller moves pneumatic and the mechanical noise that steady not bring, and the thickness of reasonable selection damping ring can adjust the shock attenuation effect. However, a certain relative displacement is inevitably generated between the common damping ring and the impeller middle disc and between the common damping ring and the supporting ring, and when the motor output shaft drives the impeller middle disc to rotate, the root of the motor output shaft is different from the vibration force of the tail end, and the common rubber pad has no adaptive structure to balance the vibration force of the root and the tail end of the motor output shaft, so that the damping effect of the structure is still weaker, and the ideal damping and noise reducing effects are difficult to play.
Therefore, there is a need for further improvement in the connection structure between the current motor and the fan housing.
Disclosure of Invention
The utility model aims to solve the technical problem of the prior art, and provides a centrifugal fan of a range hood, which can reduce vibration and noise by avoiding circumferential movement between an output shaft of a motor and a middle disc of an impeller and balancing vibration force of the root and the tail end of the output shaft of the motor.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a centrifugal fan of range hood, includes impeller and motor the central point of the center dish of impeller is provided with the rim plate that is used for installing the motor, the center of rim plate is opened has the axial to link up, the first connecting hole that the power supply machine output shaft passed, and the center dish of center dish its characterized in that: the motor is characterized by further comprising a transmission sleeve and a damping sleeve, wherein the transmission sleeve is lined on the inner wall of the damping sleeve and is fixed on the motor output shaft, and the damping sleeve is clamped between the transmission sleeve and the inner wall of the first connecting hole; the outer peripheral wall of the transmission sleeve is provided with at least two first connecting ribs which extend spirally from front to back, correspondingly, the inner peripheral wall of the damping sleeve is provided with a first connecting groove for the first connecting ribs to be embedded therein, the inner peripheral wall of the first connecting hole is provided with at least two second connecting ribs which extend spirally from front to back, correspondingly, the outer peripheral wall of the damping sleeve is provided with a second connecting groove for the second connecting ribs to be embedded therein.
Preferably, the spiral direction of the first connecting rib is the same as that of the second connecting rib.
As an improvement, the cross-sectional area of the first connecting rib and/or the second connecting rib gradually increases from front to back. The structure can avoid stress concentration on the damping sleeve and obtain better damping effect.
Preferably, the first and/or second connecting ribs have a cross-sectional shape of a semicircle that arches outwardly from the respective wall surface. The damping sleeve is preferably made of rubber materials, and the connecting rib structure with the semicircular section can effectively ensure the binding force between the rubber materials and metal, further strengthen the binding force between the damping sleeve and the transmission sleeve and between the damping sleeve and the wheel disc, avoid vibration and reduce noise.
And the thickness of the damping sleeve is W, and the section radius of the first connecting rib and/or the second connecting rib is 1/3W-1/2W. Preferably, the front end of the first connecting rib and/or the second connecting rib is 1/3W, and the rear end of the first connecting rib and/or the second connecting rib is 1/2W. Preferably, the central spiral line lift angle of the first connecting rib and/or the second connecting rib is 45-60 degrees. Preferably, the central helix lead angle of the first connection rib is the same as that of the second connection rib. With the structure, the best damping effect can be obtained.
Further improved, the thickness of the damping sleeve gradually decreases from front to back, and the thickness of the front end of the damping sleeve is 0.12-0.31 mm greater than that of the rear end of the damping sleeve. The structure can further improve the shock absorption effect.
In order to further enhance the shockproof effect, the wheel disc is connected to the middle disc through an axial shockproof mechanism. The number of the axial vibration prevention mechanisms is at least two, preferably 4, and each axial vibration prevention mechanism is arranged at intervals around the edge of the wheel disc. By adopting the structure, not only the wheel disc and the middle disc can be connected, but also vibration and noise can be eliminated in the axial direction after the fan achieves dynamic balance, the structure is matched with the transmission sleeve and the damping sleeve structure, and the motor output shaft, the wheel disc and the middle disc are connected to be subjected to vibration prevention treatment, so that the motor output shaft, the wheel disc and the middle disc are all-dimensional vibration prevention, and an excellent vibration prevention effect is achieved.
Preferably, the axial shockproof mechanism comprises a bolt and an elastic piece, a second connecting hole close to the edge is formed in the wheel disc, the second connecting hole corresponds to the second connecting hole, a third connecting hole is formed in the middle disc, the bolt penetrates through the second connecting hole and the third connecting hole to lock and connect the wheel disc with the middle disc, and the elastic piece is sleeved on the periphery of the bolt and clamped between the wheel disc and the middle disc in a pretightening force compression state. In the running process of the fan, the elastic piece can generate reactive acting force on the wheel disc and the middle disc, so that vibration and noise generated by collision of the wheel disc and the middle disc are avoided. The elastic member in the present utility model is preferably a spring.
In order to facilitate installation, the rear end face of the wheel disc is provided with a first concave cavity which is arranged around the second connecting hole, and correspondingly, the front end face of the middle disc is provided with a second concave cavity which is arranged around the third connecting hole, and the second concave cavity and the first concave cavity are mutually matched to form a containing space for containing the elastic piece. This structure improves the stability of the elastic member installation.
Preferably, the bolt is an I-shaped bolt, a first elastic sleeve coated on the periphery of the first end of the bolt is arranged on the front end face of the wheel disc, and a second elastic sleeve coated on the periphery of the second end of the bolt is arranged on the rear end face of the middle disc. The structure can prevent the end of the bolt from rigidly colliding with the wheel disc and the middle disc, and further reduce vibration and noise.
Further preferably, a third concave cavity which is arranged around the first connecting hole is formed in the front end of the wheel disc, and the first elastic sleeve and the first end of the bolt are both located in the third concave cavity. As the centrifugal fan is used in the range hood, if the first elastic sleeve is exposed on the surface of the wheel disc and is easy to adhere with oil stains, the first elastic sleeve is easy to corrode and lose efficacy for a long time, and the third concave cavity is used for protecting the first elastic sleeve, so that the problem is avoided.
In order to make the connection structure compact, the transmission sleeve comprises a cylinder body and a first gasket which is arranged at the rear end of the cylinder body and extends outwards along the edge, and the first connecting rib is arranged on the peripheral wall of the cylinder body. The damping sleeve comprises a sleeve body and a second gasket which is arranged at the rear end of the sleeve body and extends outwards along the edge, the first connecting groove is formed in the inner peripheral wall of the sleeve body, the second connecting groove is formed in the outer peripheral wall of the sleeve body, the front end face of the second gasket is pressed on the rear end face of the wheel disc in the assembled state, and the front end face of the first gasket is pressed on the rear end face of the second gasket.
Compared with the prior art, the utility model has the advantages that: according to the utility model, the motor output shaft is connected with the wheel disc by utilizing the transmission sleeve and the damping sleeve, the first connecting ribs and the first connecting grooves which are matched with each other are correspondingly arranged on the outer peripheral wall of the transmission sleeve and the inner peripheral wall of the damping sleeve, and the second connecting ribs and the second connecting grooves which are matched with each other are correspondingly arranged on the outer peripheral wall of the damping sleeve and the inner peripheral wall of the wheel disc.
Drawings
Fig. 1 is a schematic structural diagram (hidden motor) of an embodiment of the present utility model;
FIG. 2 is an exploded view of FIG. 1 (hidden impeller);
FIG. 3 is a cross-sectional view of FIG. 1;
FIG. 4 is a schematic view of a transmission sleeve according to an embodiment of the present utility model;
FIG. 5 is a schematic view of a damping sleeve according to an embodiment of the present utility model;
fig. 6 is a schematic structural view of an axial vibration prevention mechanism in an embodiment of the present utility model.
Detailed Description
The utility model is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1 to 6, the centrifugal fan of the range hood of the present embodiment includes an impeller 1, a middle disc motor (not shown in the drawings), a transmission sleeve 5 and a damping sleeve 7, a wheel disc 3 for mounting the motor is disposed at the center of the middle disc 2 of the impeller 1, and a middle disc of the middle disc is provided with a first connecting hole 31 through which an output shaft of the power supply passes in an axial direction and is arranged at the center of the wheel disc 3. The transmission sleeve 5 is lined on the inner wall of the damping sleeve 7 and fixed on the motor output shaft, and the damping sleeve 7 is clamped between the transmission sleeve 5 and the inner wall of the first connecting hole 31. The outer peripheral wall of the transmission sleeve 5 is provided with 6 first connecting ribs 51 which spirally extend from front to back, correspondingly, the inner peripheral wall of the damping sleeve 7 is provided with first connecting grooves 71 for the first connecting ribs 51 to be embedded therein, the inner peripheral wall of the first connecting hole 31 is provided with 6 second connecting ribs 311 which spirally extend from front to back, correspondingly, the outer peripheral wall of the damping sleeve 7 is provided with second connecting grooves 72 for the second connecting ribs 311 to be embedded therein, and the spiral directions of the first connecting ribs 51 and the second connecting ribs 72 are the same. In order to make the connection structure compact, the transmission sleeve 5 includes a cylinder 52 and a first spacer 53 provided at the rear end of the cylinder 52 and extending outwardly along the edge, and the first connection rib 51 is provided on the outer circumferential wall of the cylinder 52. The damping sleeve 7 comprises a sleeve body 73 and a second gasket 74 which is arranged at the rear end of the sleeve body 73 and extends outwards along the edge, the first connecting groove 71 is formed in the inner peripheral wall of the sleeve body 73, the second connecting groove 72 is formed in the outer peripheral wall of the sleeve body 73, the front end face of the second gasket 74 is pressed on the rear end face of the wheel disc 3 in the assembled state, and the front end face of the first gasket 53 is pressed on the rear end face of the second gasket 74.
In the present embodiment, the cross-sectional areas of the first connecting rib 51 and the second connecting rib 311 are gradually increased from front to rear. The structure can avoid stress concentration on the damping sleeve 7 and obtain better damping effect. The cross-sectional shapes of the first connecting rib 51 and the second connecting rib 311 are semicircular, which arch outwards from the corresponding wall surfaces. The damping sleeve 7 of the embodiment is preferably made of rubber materials, and the connecting rib structure with the semicircular section can effectively ensure the binding force between the rubber materials and the metal, further strengthen the binding force between the damping sleeve 7 and the transmission sleeve 5 and between the damping sleeve and the wheel disc 3, avoid vibration and reduce noise. In this embodiment, the thickness of the damping sleeve 7 is W, the cross-sectional radii of the first connecting rib 51 and the second connecting rib 311 are 1/3W to 1/2W, in this embodiment, the cross-sectional radii of the front ends of the first connecting rib 51 and the second connecting rib 311 are 1/3W, and the cross-sectional radii of the rear ends of the first connecting rib 51 and the second connecting rib 311 are 1/2W. The central spiral line lead angles of the first connecting rib 51 and the second connecting rib 311 are the same and are 45-60 degrees. The thickness of the damping sleeve 7 is gradually reduced from front to back, and the thickness of the front end of the damping sleeve 7 is 0.12-0.31 mm larger than that of the rear end of the damping sleeve 7, so that the damping effect can be further improved.
In this embodiment, the wheel disc 3 is connected to the center plate 2 via an axial vibration damping mechanism 6. The number of the axial vibration prevention mechanisms 6 is 4, and the axial vibration prevention mechanisms 6 are arranged at intervals around the edge of the wheel disc 3. By adopting the structure, the wheel disc 3 and the middle disc 2 can be connected, and vibration and noise can be eliminated in the axial direction after the fan achieves dynamic balance. The axial vibration prevention mechanism 6 comprises a bolt 61, an elastic piece 62, a first elastic sleeve 63 and a second elastic sleeve 64, the wheel disc 3 is provided with a second connecting hole 32 which is arranged close to the edge, the middle disc 2 is correspondingly provided with a third connecting hole 24, the bolt 61 penetrates through the second connecting hole 32 and the third connecting hole 24 to lock and connect the wheel disc 3 with the middle disc 2, and the elastic piece 62 is sleeved on the periphery of the bolt 61 and clamped between the wheel disc 3 and the middle disc 2 in a pretightening force compression state. During the operation of the fan, the elastic piece 62 can generate reaction force on the wheel disc 3 and the middle disc 2, so that vibration and noise generated by collision of the wheel disc 3 and the middle disc 2 are avoided. The elastic member 62 in this embodiment is a spring.
For easy installation, the rear end surface of the wheel disc 3 is provided with a first concave cavity 33 arranged around the second connecting hole 32, and correspondingly, the front end surface of the middle disc 2 is provided with a second concave cavity 25 arranged around the third connecting hole 24, and the second concave cavity 25 and the first concave cavity 33 are mutually matched to form a containing space for containing the elastic piece 62. This structure improves the stability of the installation of the elastic member 62.
The bolt 61 of the present embodiment is an i-bolt, the first elastic sleeve 63 is provided on the front end surface of the wheel disc 3 and covers the outer periphery of the first end of the bolt 61, and the second elastic sleeve 64 is provided on the rear end surface of the middle disc 2 and covers the outer periphery of the second end of the bolt 61. This structure can prevent the end of the bolt 61 from rigidly colliding with the wheel disc 3 and the middle disc 2, and further reduce vibration and noise. A third cavity 34 is formed on the front end of the wheel disc 3 and is arranged around the first connecting hole 32, and the first elastic sleeve 63 and the first end of the bolt 61 are both positioned in the third cavity 34. Since the centrifugal fan is used in the range hood, if the first elastic sleeve 63 is exposed on the surface of the wheel disc 3, oil stains are easily adhered, and the centrifugal fan is easily corroded and failed for a long time, and the centrifugal fan is protected through the third concave cavity 34, so that the problem is avoided.
Claims (12)
1. The utility model provides a centrifugal fan of range hood, includes impeller (1) and motor the central point of the well dish (2) of impeller is provided with rim plate (3) that are used for installing the motor, open at the center of rim plate (3) has axial to link up, first connecting hole (31) that the power supply output shaft passed, its characterized in that: the motor is characterized by further comprising a transmission sleeve (5) and a damping sleeve (7), wherein the transmission sleeve (5) is lined on the inner wall of the damping sleeve (7) and is fixed on the motor output shaft, and the damping sleeve (7) is clamped between the transmission sleeve (5) and the inner wall of the first connecting hole (31); at least two first connecting ribs (51) extending spirally from front to back are arranged on the outer peripheral wall of the transmission sleeve (5), corresponding first connecting grooves (71) for the first connecting ribs (51) to be embedded in are formed in the inner peripheral wall of the damping sleeve (7), at least two second connecting ribs (311) extending spirally from front to back are arranged on the inner peripheral wall of the first connecting hole (31), corresponding second connecting grooves (72) for the second connecting ribs (311) to be embedded in are formed in the outer peripheral wall of the damping sleeve (7);
the central spiral line lift angle of the first connecting rib (51) and/or the second connecting rib (311) is 45-60 degrees; the wheel disc (3) is connected to the middle disc (2) through an axial shockproof mechanism (6).
2. The centrifugal fan of a range hood according to claim 1, wherein: the cross-sectional area of the first connecting rib (51) and/or the second connecting rib (311) gradually increases from front to back.
3. The centrifugal fan of the range hood according to claim 2, wherein: the cross-sectional shape of the first connecting rib (51) and/or the second connecting rib (311) is in a semicircular shape arched outwards from the corresponding wall surface.
4. A centrifugal fan for a range hood according to claim 3, wherein: the thickness of the damping sleeve (7) is W, and the section radius of the first connecting rib (51) and/or the second connecting rib (311) is 1/3W-1/2W.
5. The centrifugal fan of the range hood according to claim 4, wherein: the front ends of the first connecting ribs (51) and/or the second connecting ribs (311) are 1/3W, and the rear ends of the first connecting ribs (51) and/or the second connecting ribs (311) are 1/2W.
6. The centrifugal fan of the range hood according to any one of claims 1 to 5, wherein: the thickness of the damping sleeve (7) is gradually reduced from front to back, and the thickness of the front end of the damping sleeve (7) is 0.12-0.31 mm larger than that of the rear end of the damping sleeve.
7. The centrifugal fan of a range hood according to claim 1, wherein: the axial shockproof mechanism (6) comprises a bolt (61) and an elastic piece (62), a second connecting hole (32) which is arranged close to the edge is formed in the wheel disc (3), the middle disc (2) is correspondingly provided with a third connecting hole (24), the bolt (61) penetrates through the second connecting hole (32) and the third connecting hole (24) to tightly lock the wheel disc (3) and the middle disc (2), and the elastic piece (62) is sleeved on the periphery of the bolt (61) and is clamped between the wheel disc (3) and the middle disc (2) in a pretightening force compression state.
8. The centrifugal fan of the range hood according to claim 7, wherein: the rear end face of the wheel disc (3) is provided with a first concave cavity (33) which is arranged around the second connecting hole (32), the front end face of the middle disc (2) is provided with a second concave cavity (25) which is arranged around the third connecting hole (24), and the second concave cavity (25) and the first concave cavity (33) are mutually matched to form a containing space for containing the elastic piece (62).
9. The centrifugal fan of the range hood according to claim 7, wherein: the bolt (61) is an I-shaped bolt, a first elastic sleeve (63) coated on the periphery of the first end of the bolt (61) is arranged on the front end face of the wheel disc (3), and a second elastic sleeve (64) coated on the periphery of the second end of the bolt (61) is arranged on the rear end face of the middle disc (2).
10. The centrifugal fan of a range hood according to claim 9, wherein: a third concave cavity (34) which is arranged around the first connecting hole (31) is formed in the front end of the wheel disc (3), and the first ends of the first elastic sleeve (63) and the bolt (61) are located in the third concave cavity (34).
11. The centrifugal fan of the range hood according to any one of claims 1 to 5, wherein: the transmission sleeve (5) comprises a cylinder body (52) and a first gasket (53) which is arranged at the rear end of the cylinder body (52) and extends outwards along the edge, and the first connecting ribs (51) are arranged on the peripheral wall of the cylinder body (52).
12. The centrifugal fan of the range hood according to claim 11, wherein: the damping sleeve (7) comprises a sleeve body (73) and a second gasket (74) arranged at the rear end of the sleeve body (73) and extending outwards along the edge, the first connecting groove (71) is formed in the inner peripheral wall of the sleeve body (73), the second connecting groove (72) is formed in the outer peripheral wall of the sleeve body (73), the front end face of the second gasket (74) is pressed on the rear end face of the wheel disc (3) in an assembly completion state, and the front end face of the first gasket (53) is pressed on the rear end face of the second gasket (74).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711237576.XA CN109854519B (en) | 2017-11-30 | 2017-11-30 | Centrifugal fan of range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711237576.XA CN109854519B (en) | 2017-11-30 | 2017-11-30 | Centrifugal fan of range hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109854519A CN109854519A (en) | 2019-06-07 |
| CN109854519B true CN109854519B (en) | 2024-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711237576.XA Active CN109854519B (en) | 2017-11-30 | 2017-11-30 | Centrifugal fan of range hood |
Country Status (1)
| Country | Link |
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| CN (1) | CN109854519B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114992739A (en) * | 2021-03-02 | 2022-09-02 | 广东美的制冷设备有限公司 | Air conditioning apparatus |
| CN114382709B (en) * | 2021-12-14 | 2022-12-06 | 宁波方太厨具有限公司 | Centrifugal fan, working method of centrifugal fan and range hood |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1162891A (en) * | 1997-08-08 | 1999-03-05 | Mitsubishi Heavy Ind Ltd | Turbofan and air conditioner provided with the same |
| CN202250908U (en) * | 2011-08-31 | 2012-05-30 | 重庆市星格水泵有限公司 | Low-vibration wear-resistant submerged pump |
| CN203500094U (en) * | 2013-07-23 | 2014-03-26 | 宽菱实业有限公司 | Structure of shock absorption shaft sleeve of air feeder of air conditioner |
| CN203685680U (en) * | 2014-01-24 | 2014-07-02 | 厦门沐林环保科技有限公司 | Centrifugal wind wheel on air purifier |
| WO2014206405A1 (en) * | 2013-06-27 | 2014-12-31 | Schaeffler Technologies Gmbh & Co. Kg | Bushing for pump impeller wheels, pump impeller wheel kit and coolant pump |
| CN204126974U (en) * | 2014-09-19 | 2015-01-28 | 宁波方太厨具有限公司 | A kind of cooking-fume exhauster blower shock-damping structure |
| CN105134652A (en) * | 2015-10-09 | 2015-12-09 | 珠海格力电器股份有限公司 | Impeller assembly, air conditioner, range hood and vibration damping method of impeller assembly |
| WO2016008122A1 (en) * | 2014-07-16 | 2016-01-21 | 广东威灵电机制造有限公司 | Motor rotary shaft and motor, and mounting structure of motor and rotary component |
| CN207500156U (en) * | 2017-11-30 | 2018-06-15 | 宁波方太厨具有限公司 | A kind of centrifugal blower of range hood |
-
2017
- 2017-11-30 CN CN201711237576.XA patent/CN109854519B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1162891A (en) * | 1997-08-08 | 1999-03-05 | Mitsubishi Heavy Ind Ltd | Turbofan and air conditioner provided with the same |
| CN202250908U (en) * | 2011-08-31 | 2012-05-30 | 重庆市星格水泵有限公司 | Low-vibration wear-resistant submerged pump |
| WO2014206405A1 (en) * | 2013-06-27 | 2014-12-31 | Schaeffler Technologies Gmbh & Co. Kg | Bushing for pump impeller wheels, pump impeller wheel kit and coolant pump |
| CN203500094U (en) * | 2013-07-23 | 2014-03-26 | 宽菱实业有限公司 | Structure of shock absorption shaft sleeve of air feeder of air conditioner |
| CN203685680U (en) * | 2014-01-24 | 2014-07-02 | 厦门沐林环保科技有限公司 | Centrifugal wind wheel on air purifier |
| WO2016008122A1 (en) * | 2014-07-16 | 2016-01-21 | 广东威灵电机制造有限公司 | Motor rotary shaft and motor, and mounting structure of motor and rotary component |
| CN204126974U (en) * | 2014-09-19 | 2015-01-28 | 宁波方太厨具有限公司 | A kind of cooking-fume exhauster blower shock-damping structure |
| CN105134652A (en) * | 2015-10-09 | 2015-12-09 | 珠海格力电器股份有限公司 | Impeller assembly, air conditioner, range hood and vibration damping method of impeller assembly |
| CN207500156U (en) * | 2017-11-30 | 2018-06-15 | 宁波方太厨具有限公司 | A kind of centrifugal blower of range hood |
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| Publication number | Publication date |
|---|---|
| CN109854519A (en) | 2019-06-07 |
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