Vibration and Noise Reduction Device, Fan and Range Hood

Abstract

The present application relates to the technical field of purification equipment, and in particular, to a vibration damping and noise reduction device, a fan, and a range hood. The vibration damping and noise reduction device includes a damping plate, a buffer plate, and an elastic buffer member. The damping plate and the buffer plate are spaced apart facing each other, and the damping plate is used to fit with the fan cover plate. The elastic buffer member is disposed between the damping plate and the buffer plate, and both ends of the elastic buffer member are respectively abutted against and connected to the buffer plate and the damping plate. The elastic buffer member can expand and contract in a direction perpendicular to the damping plate, so that when the fan operates and generates vibrations, the expansion and contraction deformation of the elastic buffer member can extend the time of vibration transmission to reduce the impact force generated by the vibration. Furthermore, under the combined action of the damping effect of the damping plate and the elastic buffer member, the vibration of the fan can be more effectively alleviated, and the working noise of the fan can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of purification equipment, and in particular to a vibration reduction and noise reduction device, a fan and a range hood. Background Art

[0002] As a commonly used kitchen appliance, range hoods have been widely used in people's lives. However, when the range hood is running, it often produces vibration and noise, which affects the user's experience. Therefore, the level of working noise of the range hood has become an important indicator to measure the performance of the range hood.

[0003] The fan inside the range hood is the main source of vibration and noise. The commonly used method of reducing vibration and noise for range hoods is to fit a vibration damping plate on the outer casing of the fan to optimize the vibration by changing the vibration mode. Although this can achieve the purpose of reducing vibration and noise to a certain extent, the effect is not obvious. Summary of the invention

[0004] The object of the present invention is to provide a vibration reduction and noise reduction device, a fan and a range hood, so as to effectively alleviate the vibration of the fan and reduce the working noise of the fan.

[0005] The present invention provides a vibration reduction and noise reduction device, comprising a damping plate, a buffer plate and an elastic buffer;

[0006] The damping plate is used to fit with the cover plate of the fan, the buffer plate is arranged on the side of the damping plate away from the fan through a support member, and the buffer plate and the damping plate are arranged face to face and spaced apart;

[0007] The elastic buffer is arranged between the damping plate and the buffer plate, and two ends of the elastic buffer are respectively connected to the damping plate and the buffer plate.

[0008] Furthermore, the elastic buffer is a vibration-damping spring;

[0009] There are multiple elastic buffers, and the multiple elastic buffers are distributed at intervals along the length direction of the damping plate.

[0010] Furthermore, the vibration reduction and noise reduction assembly also includes a slide rail;

[0011] The slide rail is arranged along a direction perpendicular to the damping plate, and a slider is slidably arranged on the slide rail;

[0012] One end of the support member is connected to the buffer plate, and the other end of the support member is connected to the slider.

[0013] Furthermore, a locking bolt is threaded onto the sliding block;

[0014] Twisting the locking bolt can cause one end of the locking bolt to tightly abut against the slide rail.

[0015] Furthermore, a driving device is provided on the slide rail, and a driving end of the driving device is connected to the slider to drive the slider to slide along the slide rail.

[0016] Further, the driving device includes a driving motor, a first gear, a second gear and a transmission chain;

[0017] The first gear and the second gear are rotatably connected to two ends of the slide rail in the length direction, so that the first gear and the second gear rotate around their own axes respectively;

[0018] The driving motor is used to drive the first gear to rotate, and the first gear and the second gear are matched through the transmission chain;

[0019] The sliding block is connected with the transmission chain.

[0020] Furthermore, a first muffler cavity is formed on a side of the buffer plate away from the elastic buffer, the first muffler cavity is filled with muffler cotton, and a plurality of first muffler holes distributed at intervals and connected to the first muffler cavity are opened on the side wall of the first muffler cavity.

[0021] Furthermore, a mounting groove is formed on one side of the buffer plate facing the elastic buffer component, and an end portion of the elastic buffer component abutting against the buffer plate is located in the mounting groove.

[0022] Furthermore, a second sound-absorbing chamber is formed in the support member, the second sound-absorbing chamber is filled with sound-absorbing cotton, and a plurality of second sound-absorbing holes which are spaced apart and communicated with the second sound-absorbing chamber are formed on the side wall of the support member.

[0023] Furthermore, the damping plate and the buffer plate are both in an arc shape that matches the cover plate of the fan;

[0024] The cross section of the support member is oval.

[0025] The present invention also provides a fan, comprising any one of the vibration reduction and noise reduction devices described above and a fan body; the front cover and / or rear cover of the fan is provided with the vibration reduction and noise reduction device.

[0026] The present invention also provides a range hood, comprising the fan described above.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The vibration reduction and noise reduction device provided by the present invention comprises a damping plate, a buffer plate and an elastic buffer. One side of the damping plate is fitted with the cover plate of the fan, so as to alleviate the vibration of the fan cover plate through the damping plate and reduce the working noise of the fan; the buffer plate is arranged on the side of the damping plate away from the fan through a support, and the buffer plate and the damping plate are arranged face to face with each other at a predetermined distance. The elastic buffer is arranged between the damping plate and the buffer plate, and the two ends of the elastic buffer are respectively against and connected to the buffer plate and the damping plate; the elastic buffer can be extended and retracted in a direction perpendicular to the damping plate, so that when the fan is working, the elastic buffer can extend the vibration transmission time through the elastic deformation to reduce the impact generated by the vibration, and then under the combined action of the damping effect of the damping plate and the elastic buffer, the vibration of the fan can be more effectively alleviated and the working noise of the fan can be reduced.

[0029] The present invention also provides a fan, including a fan body and the vibration reduction and noise reduction device. The front cover and the rear cover of the fan body can be respectively provided with the vibration reduction and noise reduction device to reduce vibration and noise during operation of the fan.

[0030] The present invention further provides a range hood comprising the fan, so that the range hood also has the beneficial effects of the fan, so that the vibration and noise of the range hood during operation are alleviated. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic diagram of the structure of a vibration reduction and noise reduction device provided in an embodiment of the present invention;

[0033] Figure 2 A schematic structural diagram of a vibration reduction and noise reduction assembly of a vibration reduction and noise reduction device provided in an embodiment of the present invention from a first viewing angle;

[0034] Figure 3 A schematic diagram of the structure of the vibration reduction and noise reduction assembly provided by an embodiment of the present invention from a second viewing angle;

[0035] Figure 4 for Figure 3 Schematic diagram of the cross section at AA in the middle;

[0036] Figure 5 for Figure 3 Schematic diagram of the cross section at the middle BB;

[0037] Figure 6 Schematic structural diagram of a slide rail provided with a driving device according to an embodiment of the present invention.

[0038] Reference numerals:

[0039] 1 - Fan, 11 - Cover plate, 2 - Vibration reduction and noise reduction assembly, 21 - Damping plate, 22 - Buffer plate, 23 - Vibration reduction spring, 24 - First sound absorption cavity, 25 - First sound absorption hole, 26 - Installation groove, 3 - Support member, 31 - Second sound absorption cavity, 32 - Second sound absorption hole, 4 - Slide rail, 41 - Slide block, 42 - Locking bolt, 43 - Driving motor, 44 - First gear, 45 - Second gear, 46 - Transmission chain. Detailed implementation manners

[0040] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0041] Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention.

[0042] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts fall within the scope of protection of the present invention.

[0043] 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 the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0044] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0045] Next, refer toFigures 1 to 6 The present invention describes a vibration and noise reduction device, a fan, and a range hood according to some embodiments of the present application.

[0046] The present application provides a vibration reduction and noise reduction device for reducing vibration and noise of a fan 1 of a range hood; Figure 1 and Figure 2 As shown, the vibration reduction and noise reduction device includes a damping plate 21, a buffer plate 22 and an elastic buffer. The damping plate 21 is in an arc shape that matches the cover plate 11 of the fan 1, so that one side of the damping plate 21 can fit the cover plate 11 of the fan 1, so that the vibration of the cover plate 11 of the fan 1 is alleviated by the damping plate 21, and the working noise of the fan 1 is reduced. The buffer plate 22 is consistent with the shape of the damping plate 21, and the buffer plate 22 is arranged on the side of the damping plate 21 away from the fan 1 through the support member 3, and the buffer plate 22 and the damping plate 21 are arranged to face each other at a predetermined distance.

[0047] The elastic buffer is arranged between the damping plate 21 and the buffer plate 22 in a direction perpendicular to the damping plate 21 and the buffer plate 22, and one end of the elastic buffer abuts against and is connected to the buffer plate 22, and the other end of the elastic buffer abuts against and is connected to the damping plate 21; preferably, the connection between the end of the elastic buffer and the damping plate 21 or the buffer plate 22 can be fixedly connected by welding, so that the elastic buffer can be stably arranged between the damping plate 21 and the buffer plate 22. The elastic buffer can be extended and retracted in a direction perpendicular to the damping plate 21, so that when the fan 1 is working, the elastic deformation of the elastic buffer can prolong the vibration transmission time to reduce the impact generated by the vibration, and then under the combined action of the damping effect of the damping plate 21 and the elastic buffer, the vibration of the fan 1 can be more effectively alleviated and the working noise of the fan 1 can be reduced.

[0048] In this embodiment, preferably, the elastic buffer is a vibration-damping spring 23, and the vibration-damping spring 23 is arranged between the damping plate 21 and the buffer plate 22, and the length direction of the vibration-damping spring 23 is perpendicular to the damping plate 21 and the buffer plate 22, so that the vibration-damping spring 23 can be expanded and contracted in a direction perpendicular to the damping plate 21, so as to achieve the vibration relief of the fan 1 through the expansion and contraction deformation of the vibration-damping spring 23 and the damping plate 21, thereby enhancing the vibration relief effect of the fan 1 and better realizing the vibration reduction and noise reduction of the fan 1.

[0049] Preferably, if Figure 1 As shown, there are multiple vibration-damping springs 23, and the multiple vibration-damping springs 23 are arranged side by side and spaced apart between the damping plate 21 and the buffer plate 22 along the length direction of the damping plate 21 and the buffer plate 22, so that the multiple vibration-damping springs 23 provide uniform elastic buffering force to the damping plate 21 and the cover plate 11 of the fan 1, and the expansion and contraction of the multiple vibration-damping springs 23 cooperate with the damping plate 21 to alleviate the vibration generated when the fan 1 is working, and reduce the working noise of the fan 1.

[0050] In one embodiment of the present application, preferably, as Figure 2 shown, the vibration and noise reduction device further includes a slide rail 4. The slide rail 4 is arranged in a direction perpendicular to the damping plate 21, and a slider 41 is slidably arranged on the slide rail 4. The slider 41 can reciprocally slide along the length direction of the slide rail 4. One end of the support member 3 is connected to the buffer plate 22, and the other end of the support member 3 is connected to the slider 41, so that the vibration and noise reduction assembly 2 composed of the buffer plate 22, the damping plate 21, and the vibration reduction spring 23 can move along the length direction of the slide rail 4 to approach or move away from the cover plate 11 of the fan 1, thereby changing the pre-tightening force of the damping plate 21 pressing on the cover plate 11 of the fan 1. When the fan 1 vibrates greatly, the vibration and noise reduction assembly 2 is moved in the direction approaching the fan 1 to increase the pre-tightening force of the damping plate 21 acting on the cover plate 11 of the fan 1, thereby enhancing the mitigation of the vibration of the fan 1 and reducing the working noise of the fan 1.

[0051] In this embodiment, the movement of the slider 41 can be driven manually by a person, so as to drive the vibration and noise reduction assembly 2 to move through the slider 41, and realize the adjustment of the pre-tightening force of the damping plate 21 acting on the cover plate 11 of the fan 1. Preferably, as Figure 2 shown, a locking bolt 42 is arranged on the slider 41, and an internally threaded through hole is formed on the slider 41. The locking bolt 42 is screwed into the internally threaded through hole. By screwing the locking bolt 42, one end in the length direction of the locking bolt 42 can be tightly abutted against the slide rail 4, thereby locking the slider 41 on the slide rail 4 to limit the sliding of the slider 41. When it is necessary to move the vibration and noise reduction assembly 2, the locking bolt 42 is loosened, so that the slider 41 can move to adjust the pre-tightening force of the damping plate 21 acting on the cover plate 11 of the fan 1; after the pre-tightening force is adjusted, the locking bolt 42 is screwed tightly to lock the slider 41 on the slide rail 4, so that the vibration and noise reduction assembly 2 cannot move, thereby ensuring that the damping plate 21 can provide a stable pre-tightening force for the cover plate 11 of the fan 1.

[0052] By arranging the locking bolt 42 on the slider 41 and adjusting the position of the slider 41 on the slide rail 4 manually, not only is the structure simple and the cost low, but also it is convenient to disassemble the slider 41 and the vibration and noise reduction assembly 2 from the slide rail 4 for cleaning and replacement.

[0053] In one embodiment of the present application, the movement of the slider 41 can be realized by the drive of a drive device; preferably, as Figure 6As shown in the figure, a driving device is provided on the sliding rail 4. The driving end of the driving device is connected to the slider 41, so as to drive the slider 41 to move through the operation of the driving device, and the slider 41 drives the vibration reduction and noise reduction component 2 to move along the sliding rail 4; after the position of the vibration reduction and noise reduction component 2 is adjusted, the driving device is stopped from operating, and the slider 41 can be stopped on the sliding rail 4, realizing the locking of the slider 41 and the vibration reduction and noise reduction component 2.

[0054] In this embodiment, preferably, as Figure 6 shown, the driving device includes a driving motor 43, a first gear 44, a second gear 45 and a transmission chain 46; the first gear 44 is arranged at one end of the sliding rail 4 in the length direction, and the axis direction of the first gear 44 is perpendicular to the length direction of the sliding rail 4; the driving end of the driving motor 43 is connected to the first gear 44, so that the first gear 44 can rotate around its own axis under the drive of the driving motor 43; the second gear 45 is arranged at the other end of the sliding rail 4 in the length direction, the second gear 45 can rotate around its own axis, and the axis of the second gear 45 is parallel to the axis of the first gear 44; both ends of the transmission chain 46 are sleeved and connected to the first gear 44 and the second gear 45, and the transmission chain 46 meshes with the first gear 44 and the second gear 45, so that the first gear 44 and the second gear 45 can be in transmission cooperation through the transmission chain 46; thus, when the driving motor 43 drives the first gear 44 to rotate clockwise or counterclockwise around its own axis, the transmission chain 46 can rotate clockwise or counterclockwise around the first gear 44 and the second gear 45. One end of the slider 41 is located between the transmission chains 46, and the slider 41 is connected to one side of the transmission chain 46, so that when the transmission chain 46 rotates clockwise or counterclockwise around the first gear 44 and the second gear 45, it can drive the slider 41 to reciprocate along the sliding rail 4, and further realize the adjustment of the position of the vibration reduction and noise reduction component 2; after the position of the vibration reduction and noise reduction component 2 is adjusted, the driving motor 43 stops driving the first gear 44, and the transmission chain 46 can be stopped from moving, thereby locking the slider 41 and the vibration reduction and noise reduction component 2.

[0055] In an embodiment of the present application, preferably, as Figure 3 and Figure 4 shown, an installation groove 26 is formed on the side of the buffer plate 22 facing the damping spring 23, and one end of the damping spring 23 abutted against the buffer plate 22 extends into the installation groove 26 and is abutted and connected to the bottom wall of the installation groove 26.

[0056] Preferably, as Figure 4As shown, on the side of the buffer plate 22 facing away from the damping spring 23, a first sound absorption cavity 24 is formed. The first sound absorption cavity 24 is filled with sound absorption cotton, and a plurality of first sound absorption holes 25 communicating with the first sound absorption cavity 24 are formed on the side wall of the first sound absorption cavity 24. The plurality of first sound absorption holes 25 are spaced apart on the side wall of the first sound absorption cavity 24; thereby, the sound energy of the sound waves generated during the operation of the fan 1 is consumed through the plurality of first sound absorption holes 25 and the sound absorption cotton, so as to achieve the purpose of noise reduction.

[0057] In this embodiment, preferably, as Figure 3 and Figure 5 shown, a second sound absorption cavity 31 is formed in the support member 3. The second sound absorption cavity 31 is also filled with sound absorption cotton, and a plurality of second sound absorption holes 32 communicating with the second sound absorption cavity 31 are formed on the side wall of the second sound absorption cavity 31. The plurality of second sound absorption holes 32 are spaced apart on the side wall of the second sound absorption cavity 31; thereby, the support member 3 can also consume the sound energy of the sound waves generated during the operation of the fan 1, so as to reduce the noise of the fan 1.

[0058] In this embodiment, preferably, the cross-section of the support member 3 is oval, so that both the side of the support member 3 facing the fan 1 and the side facing away from the fan 1 are arc-shaped. When the fan 1 is operating, the incoming air flow of the fan 1 flows in a direction perpendicular to the cover plate 11 of the fan 1. By making both sides of the support member 3 avoid being arc-shaped, the resistance to the air flow can be reduced to a certain extent, thereby reducing the noise of the air flow.

[0059] This application also provides a fan, as Figure 1 shown, including a fan main body and the vibration and noise reduction device of any of the above embodiments. The cover plate of the fan main body includes a front cover and a rear cover. A vibration and noise reduction device can be respectively arranged at the front cover and the rear cover to perform vibration and noise reduction treatment on the cover plate with the most obvious vibration in the fan 1 main body, and reduce the vibration and noise during the operation of the fan. Since the fan includes the vibration and noise reduction device, the fan has all the beneficial effects of the vibration and noise reduction device, which will not be elaborated here one by one.

[0060] This application also provides a range hood, including the fan of the above embodiment. Therefore, the range hood has all the beneficial effects of the fan, which will not be elaborated here one by one.

[0061] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vibration and noise reduction device, It is characterized in that It includes a damping plate, a buffer plate and an elastic buffer; The damping plate is used to fit with the cover plate of the fan, the buffer plate is arranged on the side of the damping plate away from the fan through a support member, and the buffer plate and the damping plate are arranged face to face and spaced apart; The elastic buffer is arranged between the damping plate and the buffer plate, and two ends of the elastic buffer are connected to the damping plate and the buffer plate respectively; The vibration reduction and noise reduction device further comprises a slide rail; the slide rail is arranged in a direction perpendicular to the damping plate, and a slider is slidably arranged on the slide rail; one end of the support member is connected to the buffer plate, and the other end of the support member is connected to the slider; A first muffler cavity is formed on one side of the buffer plate away from the elastic buffer member. The first muffler cavity is filled with muffler cotton, and a plurality of first muffler holes that are spaced apart and communicated with the first muffler cavity are formed on the side wall of the first muffler cavity.

2. The vibration and noise reduction device according to claim 1, It is characterized in that The elastic buffer is a vibration damping spring; There are multiple elastic buffers, and the multiple elastic buffers are distributed at intervals along the length direction of the damping plate.

3. The vibration and noise reduction device according to claim 1, It is characterized in that A locking bolt is threadedly connected to the sliding block; Twisting the locking bolt can cause one end of the locking bolt to tightly abut against the slide rail.

4. The vibration and noise reduction device according to claim 1, It is characterized in that A driving device is arranged on the slide rail, and a driving end of the driving device is connected to the slider to drive the slider to slide along the slide rail.

5. The vibration and noise reduction device according to claim 4, It is characterized in that The driving device comprises a driving motor, a first gear, a second gear and a transmission chain; The first gear and the second gear are rotatably connected to two ends of the slide rail in the length direction, so that the first gear and the second gear rotate around their own axes respectively; The driving motor is used to drive the first gear to rotate, and the first gear and the second gear are matched through the transmission chain; The sliding block is connected with the transmission chain.

6. The vibration and noise reduction device according to claim 1, It is characterized in that A mounting groove is formed on one side of the buffer plate facing the elastic buffer component, and the end of the elastic buffer component abutting against the buffer plate is located in the mounting groove.

7. The vibration and noise reduction device according to claim 1, It is characterized in that A second muffler cavity is formed in the support member, and the second muffler cavity is filled with muffler cotton. A plurality of second muffler holes are arranged at intervals and communicated with the second muffler cavity on the side wall of the support member.

8. The vibration and noise reduction device according to claim 1, It is characterized in that The damping plate and the buffer plate are both in an arc shape that matches the cover plate of the fan; The cross section of the support member is oval.

9. A fan, It is characterized in that It comprises the vibration reduction and noise reduction device and a fan body according to any one of claims 1 to 8; The front cover and / or the rear cover of the blower are / is provided with the vibration reduction and noise reduction device.

10. An oil fume purifier, characterized in that it includes the blower described in claim 9.

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