CN113847284A - Anti-shaking net cover and fan - Google Patents
Anti-shaking net cover and fan Download PDFInfo
- Publication number
- CN113847284A CN113847284A CN202111181183.8A CN202111181183A CN113847284A CN 113847284 A CN113847284 A CN 113847284A CN 202111181183 A CN202111181183 A CN 202111181183A CN 113847284 A CN113847284 A CN 113847284A
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- Prior art keywords
- mesh enclosure
- shaking
- hole
- fixed
- shock pad
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Classifications
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- 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
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- 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
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides an anti-shaking mesh enclosure which comprises a mesh enclosure body and a supporting piece, wherein a matching part is arranged on the mesh enclosure body, a clamping part and a fixing part are arranged on the supporting piece, the fixing part is fixedly connected with one side of the mesh enclosure body, and the clamping part and the matching part are clamped to fix the supporting piece and the mesh enclosure body. The invention also provides a fan which comprises a machine head, wherein the machine head is connected with the anti-shaking net cover. According to the anti-shaking mesh enclosure, the mesh enclosure body is fixed on the supporting piece, and the supporting piece and the mesh enclosure body are fixed at multiple points, so that the fixing rigidity of the mesh enclosure body is improved, and the fixing frequency is improved.
Description
Technical Field
The invention belongs to the technical field of fans, and particularly relates to an anti-shaking net cover and a fan.
Background
With the improvement of living standard of people, the fan becomes a necessary electric appliance for each household. At present, the fan blade of fan drives through driving motor, and driving motor protects through motor housing, and motor housing includes preceding shell of motor and motor backshell etc. wherein, motor housing and driving motor all install on motor support, and motor support is connected with the base of fan again.
In the prior art of electric fans, three screen covers exist in the market of electric fan products, namely a first screen cover and a second screen cover which are both plastic screen covers; one is that the first net cover is a plastic net and the second net cover is an iron net; the first net cover and the second net cover are both iron nets; the condition of screen cover shaking exists in the using process of the whole machine, and the visual experience of a user is influenced; with the current market towards the design style of the all-plastic mesh enclosure, the shaking phenomenon is more obvious and common; and for the solution of this shaking, most of the installation methods still use the traditional installation scheme: the net cover is fixed on the cover through a net cover knob; the second solution is to adjust the rotating speed of each gear to shield the natural frequency of the whole machine. However, the screen shaking cannot be fundamentally solved by the installation mode, the gear rotating speed is adjusted, and the user experience is influenced by the mode of fixing the screen knob.
Therefore, it is desirable to design an anti-shaking net cover and a fan to solve the shaking problem of the net cover fixed on the fan.
Disclosure of Invention
The invention provides an anti-shaking net cover and a fan, aiming at solving the problem that the net cover is fixed on the fan and shakes.
In order to achieve the purpose, the specific technical scheme of the anti-shaking net cover and the fan is as follows:
the invention provides an anti-shaking mesh enclosure which comprises a mesh enclosure body and a supporting piece, wherein a matching part is arranged on the mesh enclosure body, a clamping part and a fixing part are arranged on the supporting piece, the fixing part is fixedly connected with one side of the mesh enclosure body, and the clamping part and the matching part are clamped to fix the supporting piece and the mesh enclosure body.
As a further optimization of the invention, the mesh enclosure body is provided with an assembly hole, the matching part is arranged on the assembly hole, and the support piece is clamped with the matching part of the assembly hole.
As a further optimization of the present invention, the supporting member includes a first body, a second body is disposed on a side wall of the first body, the engaging portion is disposed on the first body, and the fixing portion is disposed on the second body.
According to the invention, the matching part is a clamping block, the clamping part is a buckle, the buckle is arranged on the side wall of the first body, and the first body is in clearance fit with the assembling hole, so that the buckle and the clamping block are clamped and fixed.
As a further optimization of the present invention, the mesh enclosure body is provided with mounting holes, the fixing portion includes fixing holes, and the mounting holes and the fixing holes are fixed by screws, so that the supporting member is fixed on the mesh enclosure body.
As a further optimization of the invention, the fixing part further comprises an installation groove, a second shock pad is arranged in the installation groove, a screw hole is formed in the second shock pad, and the second shock pad is fixed in a space formed between the support piece body and the mesh enclosure body through a screw.
As a further optimization of the invention, the first body is of an annular structure, the second body is of an arc-shaped plate-shaped structure, and the second body is provided with a plurality of mounting grooves so as to fix the supporting piece and the mesh enclosure body at multiple points.
As a further optimization of the invention, a plurality of clamping blocks are arranged on the inner wall of the mounting hole and are uniformly arranged along the circumferential direction of the inner wall of the assembling hole.
As a further optimization of the invention, a first cushion pad is arranged between the fan cover body and the support member.
As a further optimization of the invention, the first shock pad is of an annular structure, the outer wall of the first shock pad is provided with a clamping groove, the side wall of the first shock pad is provided with a clamping hole, the hole wall of the assembling hole is clamped into the clamping groove, and the clamping block is clamped with the clamping hole, so that the first shock pad is fixed on the mesh enclosure body.
The invention also provides a fan which comprises a machine head, wherein the machine head is connected with the anti-shaking net cover.
The anti-shaking net cover and the fan have the following advantages:
(1) according to the anti-shaking mesh enclosure, the mesh enclosure body is fixed on the supporting piece, and the supporting piece and the mesh enclosure body are fixed at multiple points, so that the fixing rigidity of the mesh enclosure body is improved, and the fixing frequency is improved.
(2) According to the fan, the machine head and the supporting piece are fixed and then fixedly connected with the mesh enclosure body, so that a resonance region with the fan blade is avoided, the mutual vibration of machine head vibration and fan blade vibration is reduced, the vibration is reduced, and the use experience of a user is improved.
Drawings
FIG. 1 is a schematic view of an anti-flutter net according to the present invention;
FIG. 2 is an exploded view of the anti-flutter guard of the present invention;
FIG. 3 is an assembly view of the anti-flutter guard of the present invention;
FIG. 4 is a schematic view of a mesh enclosure body according to the present invention;
FIG. 5 is a schematic structural view of the support member of the present invention;
FIG. 6 is a schematic structural diagram of a first cushion of the present invention;
FIG. 7 is a schematic structural diagram of a second cushion of the present invention.
The notation in the figure is: 1. a mesh enclosure body; 11. an assembly hole; 12. mounting holes; 13. a clamping block; 2. a first cushion pad; 21. a clamping hole; 22. a card slot; 3. a second cushion pad; 31. a fixing hole; 4. a support member; 41. mounting grooves; 42. buckling; 43. inserting holes; 44. a spring arm; 5. and (4) screws.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, the present invention provides an anti-shaking net cover, which includes a net cover body 1 and a supporting member 4 fixedly connected to the net cover body 1, wherein the supporting member 4 is fixed to the net cover body 1, so as to improve the fixing rigidity of the net cover body 1, improve the natural frequency, and reduce the shaking of the net cover body 1.
As shown in fig. 2, a damping structure is disposed between the supporting member 4 and the mesh enclosure body 1, so as to reduce the vibration of the anti-shaking mesh enclosure, or the damping structure is not disposed, so as to reduce the vibration of the anti-shaking mesh enclosure by fixing the supporting member 4 and the mesh enclosure body 1. The specific structure of the anti-shaking net cover is described below by two embodiments. Of course, the structure of the anti-shaking net cover provided by the invention is not limited to these combination modes, but can be other combination modes, and is not specifically limited herein, and only these two embodiments are explained in detail.
Example one
As shown in fig. 4, the anti-shaking mesh enclosure provided by the embodiment of the present invention includes a mesh enclosure body 1, wherein the mesh enclosure body 1 is provided with an assembly hole 11, the assembly hole 11 is generally mounted on a machine head of a fan, the mesh enclosure body 1 is provided with a fitting portion, and the fitting portion is disposed on an outer surface of the mesh enclosure body 1, so that the supporting member 4 is fixedly disposed on the outer surface of the mesh enclosure body 1. The outer surface refers to the surface far away from the fan blade when the screen cover body 1 is used for installing the fan blade, the screen cover body 1 is generally a rear screen cover, and the rear screen cover and the support frame are fixed and then installed on the machine head. The anti-shaking net cover provided by the embodiment of the invention adopts a mode that the fixation is moved outwards to the net cover and is changed from single-point fixation to multi-point fixation, so that the fixation rigidity of the net cover is improved, the fixation frequency is improved, the resonance interval with the fan blade is avoided, the mutual shaking of the machine head shaking and the fan blade shaking can be reduced, and the shaking is reduced.
As shown in fig. 5, the supporting member 4 includes a first body, the first body is fixedly connected with a second body, the first body and the second body can be integrally formed, and can also be respectively welded and fixed, preferably, the first body and the second body are integrally formed. The first body is an annular shell, of course, the shape and structure of the first body are the same as those of a shell structure which is arranged on the rear net and fixed with the machine head in the existing fan, the first body is provided with a through hole, and the through hole is mainly installed with the machine head. The second body is an arc-shaped support, the arc-shaped support can be a semicircular support, can also be a circular support, and can also be a support in other shapes, specific limitation is not needed, the circular or semicircular support is arranged to increase the fixing positions of the mesh enclosure body 1 and the supporting piece 4, so that single-point fixing is converted into a multipoint fixing mode, the fixing rigidity of the mesh enclosure is improved, the fixing frequency is improved, a resonance interval with the fan blade is avoided, the vibration of the machine head and the vibration of the fan blade can be reduced, and the shake is reduced.
Further, be provided with block portion and fixed part on the second body, the fixed part setting is in the apex angle department of support, and the fixed part includes a plurality ofly, and the fixed part specifically can set up to mounting groove 41, is provided with the through-hole in the cell body of mounting groove 41 to make fixed part and 1 screw 5 of screen panel body be connected.
Specifically, the clamping part is a buckle 42, the buckle 42 is fixedly arranged on the support, the buckle 42 is arranged on the support on one side installed on the mesh enclosure body 1, the buckle 42 is provided with an elastic arm, and the elastic arm is clamped with the mesh enclosure body 1, so that the mesh enclosure body 1 is clamped and fixed with the first body.
Preferably, be provided with cooperation portion on the screen panel body 1, cooperation portion sets up on the pilot hole 11 of screen panel body 1, is provided with fixture block 13 on the inner wall of pilot hole 11, and specific fixture block 13's quantity is four. Of course, the number of the latch 13 is not limited to four, and may be provided in plural, and is not specifically limited herein. The plurality of clamping blocks 13 are uniformly distributed along the circumferential direction of the inner wall of the assembling hole 11, similarly, the clamping buckles 42 are uniformly arranged on the two side walls of the first body by taking the center of the first body as a symmetry axis, and the number of the clamping buckles 42 is also set to be a plurality of, so that specific limitation can be made according to the shape of the bracket.
Of course, the number of the buckles 42 is matched with that of the latches 13, so that the buckles 42 and the latches 13 are clamped and fixed.
Preferably, the mesh enclosure body 1 may be made of various materials, such as a plastic mesh enclosure or a metal mesh enclosure, which is not limited herein. The shape of the mounting hole 11 formed in the mesh enclosure body 1 may be square, circular or other shapes.
In the specific installation process of the anti-shaking mesh enclosure provided by the invention, the fixing part on the supporting piece 4 and the installation hole 12 are fixed, and the buckle 42 arranged on the supporting piece 4 is clamped with the clamping block 13, so that the fixed installation of the supporting piece 4 and the mesh enclosure body 1 is realized. Through set up support piece 4 between aircraft nose and screen panel body 1, can reduce aircraft nose vibrations and the vibrations of fan blade shock each other, reduce the shake.
The electric fan does not shake or can shake insignificantly in various rotating speeds of the electric fan in normal use, the shaking problem is solved, and the use experience of a user is improved; the vibration frequency is positively correlated with the rigidity of the vibrating object, the stronger the rigidity is, the larger the vibration frequency is, and the rotating speed of the fan among all gears is uniformly changed, for example: 500 in 1 gear, 700 in 2 gear and 900 in 3 gear. The inherent vibration frequency of the mesh enclosure body 1 is 700 revolutions, and at the moment, the strength of the mesh enclosure body 1 can be increased to adjust the vibration frequency of the mesh enclosure body 1 to 800 revolutions, so that the two frequencies are different, and the mesh enclosure body 1 does not follow resonance.
Example two
As shown in fig. 6 and 7, the anti-shaking mesh enclosure provided by the embodiment of the invention includes a mesh enclosure body 1, wherein the mesh enclosure body 1 is provided with an assembly hole 11, the assembly hole 11 is generally mounted on a machine head of a fan, the mesh enclosure body 1 is provided with a matching portion, and the matching portion is arranged on an outer surface of the mesh enclosure body 1, so that the supporting member 4 is fixedly arranged on the outer surface of the mesh enclosure body 1. Be provided with shock-absorbing structure between support piece 4 and the screen panel body 1, increase shock-absorbing structure and can further reduce the shake of screen panel body 1, improve user experience.
Further, shock-absorbing structure includes first shock pad 2 and second shock pad 3, and first shock pad 2 and second shock pad 3 can set up simultaneously also can set up respectively, and concrete form of setting does not do specific injecing as long as can keep apart support piece 4 and screen panel body 1.
As shown in fig. 6, the first damping pad 2 is a rubber ring, but may also be a silicone ring, and the specific structure of the first damping pad 2 is not specifically limited herein, and may also be made of other materials.
Further, a clamping groove 22 is formed in the outer wall of the first shock pad 2, and the clamping groove 22 is matched with the assembling hole 11, so that the clamping groove 22 is matched with the hole wall of the assembling hole 11. Be provided with a plurality of card holes 21 on the inner wall of draw-in groove 22, the quantity phase-match of card hole 21 and fixture block 13 to make card hole 21 and fixture block 13 cooperate, thereby with 2 interference fit of first shock pad on screen panel body 1, so that the direct contact of screen panel body 1 and support piece 4 has been kept apart to first shock pad 2.
As shown in fig. 7, the second cushion 3 is disposed in the mounting groove 41, the second cushion 3 is provided with a fixing hole 31, and the fixing hole 31 and the mounting hole 12 are fixedly connected by a screw 5, so that the mesh enclosure body 1, the second cushion 3 and the support member 4 are fixed.
Preferably, the number of the second cushion 3 is the same as that of the mounting grooves 41, and one second cushion 3 is disposed in each mounting groove 41, so that the second cushion 3 isolates the direct contact between the mesh enclosure body 1 and the support member 4.
Of course, the second cushion 3 is a rubber ring or a silicone ring, and may also be made of other materials, which is not limited herein.
The anti-shaking screen cover provided by the embodiment firstly fixes the first shock pad 2 and the assembling hole 11, and then places the second shock pad 3 in the mounting groove 41, so that the fixing part of the support member 4 is fixedly connected with the mounting hole 12 of the screen cover body 1, and then the buckle 42 is clamped with the clamping block 13, so that the support member 4 is fixedly arranged on the screen cover body 1.
The embodiment changes the mode of single-point fixation into multi-point fixation, improves the fixed rigidity of the mesh enclosure, improves the fixed frequency, avoids the resonance region with the fan blade, can reduce the vibration of the machine head and the vibration of the fan blade, and reduces the shake. The electric fan has the advantages that the electric fan does not shake or can shake insignificantly in various rotating speeds of the electric fan in normal use, the shaking problem is solved, and the use experience of a user is improved.
The invention also provides a fan, which comprises a machine head, wherein the machine head is connected with the anti-shaking net cover, and the fixed rigidity of the net cover is improved and shaking is reduced by fixing and moving outwards; the fixed outward movement finger moves outward in the radial direction, namely, the position with larger diameter of the mesh enclosure is fixed, and the strength of the mesh enclosure is increased; by the isolated installation, the vibration of the machine head and the vibration of the fan blade can be reduced, and the shake is reduced; by fixing and moving outwards, the fixed frequency is improved, the resonance interval with the fan blade is avoided, and the jitter is reduced.
Specifically, be provided with spliced eye 43 on the first body, one side of spliced eye 43 is provided with bullet arm 44, in the installation, cooperatees aircraft nose and joint portion to it is fixed to make aircraft nose and first body.
The fan provided by the embodiment of the invention is different from the traditional fixing mode in that the fan is fixed and moved outwards to the mesh enclosure body 1, and the mode is changed from single-point fixing to multi-point fixing, so that the fixing rigidity of the mesh enclosure body 1 is improved, the fixing frequency is improved, the resonance region with the fan blade is avoided, the mutual vibration of machine head vibration and fan blade shock can be reduced, and the vibration is reduced. The electric fan has the advantages that the electric fan does not shake or can shake insignificantly in various rotating speeds of the electric fan in normal use, the shaking problem is solved, and the use experience of a user is improved.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (11)
1. The utility model provides an anti-shake screen panel, its characterized in that includes screen panel body and support piece, is provided with cooperation portion on the screen panel body, is provided with block portion and fixed part on the support piece, one side fixed connection of fixed part and screen panel body, and block portion and cooperation looks joint are so that support piece and screen panel body are fixed.
2. The anti-shaking mesh enclosure according to claim 1, wherein the mesh enclosure body is provided with an assembly hole, the engagement portion is provided on the assembly hole, and the support member is engaged with the engagement portion of the assembly hole.
3. The anti-shaking mesh enclosure according to claim 2, wherein the support member comprises a first body, a second body is disposed on a sidewall of the first body, the engaging portion is disposed on the first body, and the fixing portion is disposed on the second body.
4. The anti-shaking screen cover according to claim 3, wherein the first body is of an annular structure, the second body is of an arc plate-shaped structure, and the second body is provided with a plurality of mounting grooves for fixing the support member and the screen cover body at multiple points.
5. The anti-shaking mesh enclosure according to claim 3, wherein the engaging portion is a clip, the clip is disposed on the sidewall of the first body, and the first body and the fitting hole are in clearance fit to allow the clip and the clip to be fixed in a snap-fit manner.
6. The anti-shaking mesh enclosure according to claim 2, wherein the mesh enclosure body is provided with mounting holes, and the fixing portion comprises fixing holes, and the mounting holes and the fixing holes are fixed by screws so that the supporting member is fixed on the mesh enclosure body.
7. The anti-jitter net cover according to claim 6, wherein the fixing portion further comprises a mounting groove, a second shock pad is disposed in the mounting groove, a screw hole is formed in the second shock pad, and the second shock pad is fixed in the space formed between the supporting member and the net cover body by a screw.
8. The anti-shaking screen cover according to claim 6, wherein a plurality of clamping blocks are arranged on the inner wall of the mounting hole, and the plurality of clamping blocks are uniformly arranged along the circumferential direction of the inner wall of the mounting hole.
9. The anti-shaking mesh enclosure according to claim 5, wherein a first cushion is provided between the hood body and the support member.
10. The anti-shaking mesh enclosure according to claim 9, wherein the first shock pad is of a ring-shaped structure, the outer wall of the first shock pad is formed with a clamping groove, the side wall of the first shock pad is provided with a clamping hole, the hole wall of the assembling hole is clamped into the clamping groove, and the clamping block is clamped with the clamping hole, so that the first shock pad is fixed on the mesh enclosure body.
11. A fan comprising a head to which is attached an anti-flutter screen as claimed in any one of claims 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111181183.8A CN113847284A (en) | 2021-10-11 | 2021-10-11 | Anti-shaking net cover and fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111181183.8A CN113847284A (en) | 2021-10-11 | 2021-10-11 | Anti-shaking net cover and fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113847284A true CN113847284A (en) | 2021-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111181183.8A Pending CN113847284A (en) | 2021-10-11 | 2021-10-11 | Anti-shaking net cover and fan |
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| CN (1) | CN113847284A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117090810A (en) * | 2023-10-19 | 2023-11-21 | 杭州顿力电器有限公司 | Frequency modulation and vibration prevention device for auxiliary fan mesh enclosure and use method of frequency modulation and vibration prevention device |
-
2021
- 2021-10-11 CN CN202111181183.8A patent/CN113847284A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117090810A (en) * | 2023-10-19 | 2023-11-21 | 杭州顿力电器有限公司 | Frequency modulation and vibration prevention device for auxiliary fan mesh enclosure and use method of frequency modulation and vibration prevention device |
| CN117090810B (en) * | 2023-10-19 | 2024-01-26 | 杭州顿力电器有限公司 | Frequency modulation and vibration prevention device for auxiliary fan mesh enclosure and use method of frequency modulation and vibration prevention device |
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