Vibration impeller device and range hood comprising same
By using multiple connection holes and fixed blocks in the vibrating impeller device of the range hood, the vibration state of the blade is adjusted, the problem of the hood is solved, the vibration control accuracy and stability are improved, and the noise is reduced. Extend the life of the equipment.
Patent Information
- Application Number
- CN202420567458.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-22
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-03-22
AI Technical Summary
Due to the problem of orderly antonal noise caused by motor order vibrations, the existing frequency avoidance design cannot effectively take into account multiple orderly antonal noise, especially at different speeds.
Design a vibration impeller device, by setting multiple types of connection holes on the outer edge of the middle disk and installing fixed blocks on the blade, adjusting the fixed block position according to the different distances from the center of the blade to the center of the middle disk, so as to realize different positions in the middle disk to absorb vibration, reduce order vibration and unusual sound.
It effectively reduces the incidence of orderly abnormal sound, improves the vibration control accuracy and stability of the vibration impeller device, extends the service life, and reduces the working noise level of the range hood, and improves the user experience.
Smart Images
Figure CN222228952U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a vibrating impeller device and a range hood comprising the same. Background Art
[0002] When the range hood is in operation, the motor's order vibration problem often causes the whole machine to produce corresponding order abnormal noise. There are many orders of order vibrations under different operating speeds. Reducing these order vibrations can greatly control the order abnormal noise problem caused by them. The existing frequency avoidance design can often only optimize individual modal frequencies, and there is no good solution to fully take into account multiple orders of abnormal noise within a certain speed range. Utility Model Content
[0003] The technical problem to be solved by the utility model is to overcome the defect of abnormal order noise of the range hood in the prior art, and to provide a vibrating impeller device and a range hood including the same.
[0004] The utility model solves the above technical problems through the following technical solutions:
[0005] A vibrating impeller device, comprising a middle disk and a plurality of blades arranged on the middle disk and arranged in sequence and spaced apart along the circumferential direction of the central axis of the middle disk.
[0006] A plurality of connection holes are provided on the outer edge of the middle disk for the blades to pass through and are located at different lengths from the center of the middle disk. The connection holes are arranged alternately, and a fixing block is provided on the blade, which is embedded in the connection hole to drive the blade to swing in the connection hole along the radial direction of the middle disk, wherein the center of mass of several blades is the same distance from the center of the middle disk, but the center of swing of the fixing block on the blade passing through various connection holes is different from the center of mass of the blade.
[0007] In the present technical solution, by setting multiple types of connection holes on the outer edge of the middle disk and installing a fixing block on the blade, the position of the blade fixing block can be adjusted according to the different distances from the center of mass of the blade to the center of the middle disk, thereby achieving vibration absorption at different positions of the middle disk, reducing the order vibration of the blade at different speeds, effectively reducing the occurrence rate of order abnormal noise, and achieving full coverage of vibration absorption for all concerned order vibrations within the entire speed range of the motor. And by adjusting the position of the fixing block, the vibration of the blade at different positions of the middle disk can be more accurately controlled, thereby improving the vibration control accuracy and effect of the impeller device. In addition, the structure of the present application only requires special design on the fixing structure of the blade and the middle disk, without the need for additional vibration absorption structure and without adding additional cost.
[0008] Therefore, by effectively reducing order vibration and order abnormal sound, the instability of the vibrating impeller device during operation can be reduced, the stability and reliability of the vibrating impeller device can be improved, and its service life can be extended.
[0009] Preferably, the connecting hole is a round hole extending along the radial direction of the middle plate, and the length of the fixing block along the radial direction of the middle plate is matched with the length of the round hole.
[0010] In this technical solution, the design of the waist-shaped hole enables the fixed block of the blade to slightly float and swing left and right in the connection hole. This degree of freedom allows the blade to more flexibly adjust the vibration state at different speeds and helps absorb and slow down the vibration energy of the blade, thereby reducing the possibility of vibration transmission to other components, further reducing the generation of order abnormal sound, and thus more effectively reducing vibration problems such as order abnormal sound. At the same time, the micro-floating swing of the fixed block in the waist-shaped hole can be adaptively adjusted according to the vibration conditions of the blade at different positions, improving the accuracy and effect of vibration control.
[0011] Preferably, the fixing block is arranged at the front end of the blade along the wind inlet direction.
[0012] In this technical solution, such a design can more directly affect the vibration of the blades, thereby enhancing the ability to control the vibration, more effectively adjusting the vibration state of the blades, and reducing the impact of the vibration on the entire impeller device. Moreover, to a certain extent, it can also absorb and disperse the vibration energy more timely, improve the damping effect, reduce the propagation of vibration, enhance the stability of the blades, and reduce the generation of abnormal sound.
[0013] Preferably, along the central axis direction of the middle disk, the cross-sectional dimensions of each type of the connecting holes are the same.
[0014] In this technical solution, the same cross-sectional dimensions can ensure that each connection hole has a similar geometric shape and size, thereby providing consistency and stability, ensuring that the movement and vibration behavior of the blade through the fixed block in different connection holes are relatively consistent, which helps to improve its overall stability and reliability. In addition, the same cross-sectional dimensions of the connection holes mean that the movement characteristics of the fixed block in different connection holes are similar, which helps to maintain the consistency of vibration control. Such a design helps to ensure that the vibration control effect at different blade positions is basically consistent, improving the predictability and efficiency of vibration control.
[0015] Preferably, along the circumference of the central axis of the middle disk, each type of connecting holes is arranged at equal intervals.
[0016] In this technical solution, the connection holes are arranged at equal intervals to evenly distribute the vibration control points around the blades, thereby achieving a balanced distribution of blade vibration, helping to reduce local vibration concentration, reducing the impact of blade vibration on the entire vibrating impeller device, and improving stability and reliability. In addition, the connection holes are arranged at equal intervals to help maintain the dynamic balance of the vibrating impeller device. Specifically, by evenly distributing the vibration control points, the vibration difference of the blades at different positions can be reduced, thereby improving the dynamic balance of the vibrating impeller device and reducing the impact of unstable factors.
[0017] Preferably, along the thickness direction of the blade, the thickness of the fixing block is not less than the thickness of the blade.
[0018] In this technical solution, the thickness of the fixed block is not less than the thickness of the blade, which can provide stronger structural support, enhance the stability of the blade set on the center disk, reduce the deformation and damage of the fixed block during vibration, and ensure its effective control of blade vibration.
[0019] Preferably, the width of the fixing block is not less than the thickness of the middle plate.
[0020] In the present technical solution, the width of the fixing block is not less than the thickness of the middle disk, so that a more consistent and tight connection can be formed between the fixing block of the blade and the middle disk, which helps to improve the stability and reliability of the impeller device.
[0021] Preferably, the blade includes at least two parts separated by the fixing block, a gap for accommodating the fixing block is provided between the at least two parts, and the thickness of the middle plate is not greater than the width of the gap.
[0022] In the present technical solution, the thickness of the center disk is not greater than the width of the gap, which can enhance the structural stability of the blade, reduce the deformation and displacement of the blade when swinging, and improve the mechanical stability and reliability of the blade.
[0023] Preferably, the number of the middle plates is at least two, and at least two of the middle plates are arranged in sequence and spaced apart along the central axis direction of the middle plate.
[0024] In the present technical solution, the spacing between the multiple middle disks can increase the structural strength and stability of the impeller device, form a more solid support structure inside the impeller, reduce the deformation and vibration of the impeller during high-speed rotation, and improve the overall stability of the system.
[0025] A range hood, comprising the oscillating impeller device as described in any one of the above items.
[0026] In the present technical solution, the use of a vibrating impeller device can effectively reduce the vibration and noise generated by the impeller during operation, can effectively control the vibration of the blades, and reduce the generation of order noise, thereby reducing the working noise level of the range hood, thereby improving the user's comfort and experience when using the range hood.
[0027] The positive and progressive effects of the utility model are:
[0028] 1. The impeller device is provided with multiple types of connection holes on the outer edge of the middle disk, and a fixing block is installed on the blade. The position of the blade fixing block can be adjusted according to the different distances from the center of mass of the blade to the center of the middle disk, thereby achieving vibration absorption at different positions of the middle disk, reducing the order vibration of the blade at different speeds, effectively reducing the occurrence rate of order abnormal noise, and achieving full coverage of vibration absorption for all concerned order vibrations within the entire speed range of the motor. And by adjusting the position of the fixing block, the vibration of the blade at different positions of the middle disk can be more accurately controlled, thereby improving the vibration control accuracy and effect of the impeller device. In addition, the structure of the present application only requires special design on the fixing structure of the blade and the middle disk, without the need for additional vibration absorption structure and without adding additional cost.
[0029] Therefore, by effectively reducing order vibration and order abnormal sound, the instability of the vibrating impeller device during operation can be reduced, the stability and reliability of the vibrating impeller device can be improved, and its service life can be extended.
[0030] 2. The range hood uses a vibrating impeller device to effectively reduce the vibration and noise generated by the impeller during operation, can effectively control the vibration of the blades, and reduce the generation of order abnormal noise, thereby reducing the operating noise level of the range hood, thereby improving the user's comfort and experience when using the range hood. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] Figure 1 It is a schematic diagram of the overall structure of the vibrating impeller device of a preferred embodiment of the utility model.
[0032] Figure 2 This is a structural schematic diagram of the middle plate of a preferred embodiment of the utility model from a first perspective.
[0033] Figure 3 This is a structural schematic diagram of the second viewing angle of the middle plate of a preferred embodiment of the utility model.
[0034] Figure 4 It is a front view of the middle plate of a preferred embodiment of the utility model.
[0035] Figure 5a This is a schematic structural diagram of the first blade of a preferred embodiment of the utility model.
[0036] Figure 5b This is a front view of the first blade of a preferred embodiment of the present invention.
[0037] Figure 6a This is a schematic structural diagram of the second blade of a preferred embodiment of the utility model.
[0038] Figure 6b This is a front view of the second blade of a preferred embodiment of the utility model.
[0039] Figure 7 It is a side view of two blades of a preferred embodiment of the utility model.
[0040] Description of reference numerals:
[0041] Impeller device 100
[0042] Mid-range 200
[0043] Connection hole 21
[0044] Blade 300
[0045] Fixed block 31
[0046] First blade 32
[0047] Second blade 33 DETAILED DESCRIPTION
[0048] The present invention is further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments.
[0049] like Figure 1-Figure 7 As shown, this embodiment discloses an impeller device 100 .
[0050] The impeller device 100 includes a center plate 200 and a plurality of blades 300 disposed on the center plate 200 and arranged in a sequentially spaced arrangement along the circumferential direction of the central axis of the center plate 200. Figure 4 As shown, a plurality of connection holes 21 for the blades 300 to pass through and at least two positions at different lengths from the center of the middle disk 200 are provided on the outer edge of the middle disk 200, that is, the present embodiment discloses two structural forms of connection holes 21, and the connection holes 21 are staggered. The difference between the two connection holes 21 is that the centers of the two connection holes 21 are at different lengths from the center of the middle disk 200, and a fixed block 31 is provided on the blade 300 and is embedded in the connection hole 21 to drive the blade 300 to swing in the connection hole 21 along the radial direction of the middle disk 200, that is, to slightly float left and right.
[0051] Specifically, the distance between the center of mass of several blades 300 and the center of the middle plate 200 is the same, that is, the distance between the outer edges of several blades 300 and the center of the middle plate 200 is the same, but for blades 300 inserted into different types of connecting holes 21, the distance between the swing center of the fixed block 31 on the blade 300 and the center of mass of the blade 300 is different.
[0052] For details, please refer to Figure 7 As shown, the blade 300 also includes at least two blades 300 adapted to the structures of different types of connection holes 21, namely, a first blade 32 and a second blade 33. The length of the swing center of the fixed block 31 on the first blade 32 from the center of mass of the first blade 32 is L1, and the length of the swing center of the fixed block 31 on the second blade 33 from the center of mass of the second blade 33 is L2. L1 and L2 are not the same, but the length of each blade 300 from the center of the center disk 200 is R. Except that the position of the fixed block 31 relative to the blade 300 is different, there is no other difference between the first blade 32 and the second blade 33, either in the structural form of the fixed block 31 or in the structural form of the blade 300. It is the different positions of the fixed blocks 31 of different blades 300 that ensure the different swing frequencies of the blades 300, thereby achieving multi-order vibration absorption requirements.
[0053] Therefore, according to the natural frequency formula of the swing body (blade):
[0054]
[0055] Where: a is the acceleration value of the swinging blade, a = ω 2 R, R is the distance between the center of mass of the blade 300 and the center of the center disk 200 (constant);
[0056] L is the length from the swing center of the fixed block 31 on the blade 300 to the mass center of the blade 300, which is L1 and L2 in this embodiment;
[0057] From this, we can know that the natural frequency of the swing body (blade) is:
[0058]
[0059] Wherein, w / 2π is the rotational frequency of the motor or impeller (which is a constant), and the natural frequency of the swing body (blade 300) will automatically adjust to the current rotational frequency as the rotational speed changes. Since the vibration order of the motor is the multiple of the rotation frequency, the design of different L values can achieve multiple-order swing vibration absorption effects, and each type of blade 300 is essentially a dynamic vibration absorber whose vibration absorption frequency is automatically adjusted with the rotation speed. The orders of general concern are 10, 30, and 70 times the rotation frequency, so the design They are 10, 30, and 70 respectively.
[0060] Therefore, in this embodiment, by setting multiple types of connection holes 21 on the outer edge of the middle disk 200 and installing a fixing block 31 on the blade 300, the position of the fixing block 31 of the blade 300 can be adjusted according to the different distances from the center of mass of the blade 300 to the center of the middle disk 200, so as to achieve vibration absorption at different positions of the middle disk 200, reduce the order vibration of the blade 300 at different speeds, effectively reduce the occurrence rate of order abnormal noise, and achieve full coverage of vibration absorption of all concerned order vibrations within the entire speed range of the motor. And by adjusting the position of the fixing block 31, the vibration of the blade 300 at different positions of the middle disk 200 can be more accurately controlled, thereby improving the vibration control accuracy and effect of the impeller device 100. In addition, the structure of the present application only requires special design on the fixing structure of the blade 300 and the middle disk 200, without the need for additional vibration absorption structure and without adding additional cost.
[0061] Therefore, by effectively reducing order vibration and order abnormal sound, the instability of the impeller device 100 during operation can be reduced, the stability and reliability of the impeller device 100 can be improved, and its service life can be extended.
[0062] In other embodiments, the number and type of connecting holes 21 and the form of fixing blocks 31 are not limited to the two in the present application, and the specific settings need to be set according to the motor speed range, i.e., the order, in the vibrating impeller device 100 in the specific situation.
[0063] like Figure 2-Figure 4 As shown, in this embodiment, the connecting hole 21 is a waisted hole extending along the radial direction of the middle plate 200, and the length of the fixing block 31 along the radial direction of the middle plate 200 is adapted to the length of the waisted hole.
[0064] In this embodiment, the design of the oval hole enables the fixing block 31 of the blade 300 to slightly float and swing left and right in the connecting hole 21. Such a degree of freedom enables the blade 300 to more flexibly adjust the vibration state at different speeds and helps to absorb and slow down the vibration energy of the blade 300, thereby reducing the possibility of vibration transmission to other components, further reducing the generation of order abnormal sound, and thus more effectively reducing vibration problems such as order abnormal sound. At the same time, the slightly floating swing of the fixing block 31 in the oval hole can be adaptively adjusted according to the vibration conditions of the blade 300 at different positions, thereby improving the accuracy and effect of vibration control.
[0065] In other embodiments, the shape and structure of the connecting hole 21 can be set as needed, as long as the blade 300 can pass through the hole and can achieve micro-floating and swinging in the hole, which falls within the protection scope of the present application.
[0066] like Figure 1 As shown, the fixing block 31 is arranged at the front end of the blade 300 along the wind inlet direction. Such a design can more directly affect the vibration of the blade 300, thereby enhancing the control capability of the vibration, and can more effectively adjust the vibration state of the blade 300, thereby reducing the impact of the vibration on the entire impeller device 100. Moreover, to a certain extent, the vibration energy can be absorbed and dispersed more timely, the damping effect is improved, the propagation of the vibration can be reduced, the stability of the blade 300 is enhanced, and the generation of abnormal sound of the order is reduced.
[0067] like Figure 4 As shown, along the central axis direction of the middle disk 200, the cross-sectional dimensions of each connection hole 21 are the same. The same cross-sectional dimensions can ensure that each connection hole 21 has a similar geometric shape and size, thereby providing consistency and stability, ensuring that the movement and vibration behavior of the blade 300 through the fixing block 31 in different connection holes 21 are relatively consistent, which helps to improve its overall stability and reliability. In addition, the same cross-sectional dimensions of the connection holes 21 mean that the movement characteristics of the fixing block 31 in different connection holes 21 are similar, which helps to maintain the consistency of vibration control. Such a design helps to ensure that the vibration control effect at different blade 300 positions is basically consistent, and improves the predictability and efficiency of vibration control.
[0068] At the same time, along the circumference of the central axis of the middle disk 200, each type of connection hole 21 is arranged at equal intervals. The connection holes 21 arranged at equal intervals can evenly distribute the vibration control points around the blade 300, thereby achieving a balanced distribution of the vibration of the blade 300, which helps to reduce local vibration concentration, reduces the impact of the vibration of the blade 300 on the entire vibration impeller device 100, and improves stability and reliability. In addition, the connection holes 21 arranged at equal intervals also help maintain the dynamic balance of the vibration impeller device 100. Specifically, by evenly distributing the vibration control points, the vibration difference of the blade 300 at different positions can be reduced, thereby improving the dynamic balance of the vibration impeller device 100 and reducing the impact of unstable factors.
[0069] like Figure 7 As shown, along the thickness direction of the blade 300, the thickness of the fixing block 31 is not less than the thickness of the blade 300. The thickness of the fixing block 31 is not less than the thickness of the blade 300, which can provide stronger structural support, enhance the stability of the blade 300 set on the middle plate 200, reduce the deformation and damage of the fixing block 31 during the vibration process, and ensure its effective control of the vibration of the blade 300.
[0070] Along the radial direction of the middle disk 200, the width of the fixing block 31 is not less than the thickness of the middle disk 200. In this embodiment, preferably, the width of the fixing block 31 is equal to the thickness of the middle disk 200. The width of the fixing block 31 is not less than the thickness of the middle disk 200, so that the fixing block 31 of the blade 300 and the middle disk 200 can form a more consistent and tight connection, which helps to improve the stability and reliability of the impeller device 100.
[0071] like Figure 5a-Figure 6b As shown, the blade 300 includes at least two parts separated by a fixing block 31, that is, in this embodiment, it is divided into three parts by two fixing blocks 31, and a gap for accommodating the fixing blocks 31 is provided between the three parts. The thickness of the middle plate 200 is not greater than the width of the gap. In this embodiment, it is preferred that the thickness of the middle plate 200 is equal to the width of the gap. Among them, the thickness of the middle plate 200 is not greater than the width of the gap, which can enhance the structural stability of the blade 300, reduce the deformation and displacement of the blade 300 when swinging, and improve the mechanical stability and reliability of the blade 300.
[0072] like Figure 2-Figure 3 As shown, the number of the middle disks 200 is at least two, and at least two middle disks 200 are arranged in sequence along the central axis direction of the middle disk 200. The spacing between the multiple middle disks 200 can increase the structural strength and stability of the impeller device 100, and can form a more solid supporting structure inside the impeller, thereby reducing the deformation and vibration of the impeller during high-speed rotation and improving the overall stability of the system.
[0073] The present embodiment also discloses a range hood, which includes the above-mentioned impeller vibration device 100, which can effectively reduce the vibration and noise generated by the impeller during operation, can effectively control the vibration of the blades 300, and reduce the generation of order abnormal noise, thereby reducing the working noise level of the range hood, thereby improving the user's comfort and experience when using the range hood.
[0074] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.
Claims
1. A vibrating impeller device, comprising a middle disk and a plurality of blades arranged on the middle disk and arranged in sequence along the circumferential direction of the central axis of the middle disk, characterized in that: A plurality of connection holes are provided on the outer edge of the middle disk for the blades to pass through and are located at different lengths from the center of the middle disk. The connection holes are arranged alternately, and a fixing block is provided on the blade, which is embedded in the connection hole to drive the blade to swing in the connection hole along the radial direction of the middle disk, wherein the center of mass of several blades is the same distance from the center of the middle disk, but the center of swing of the fixing block on the blade passing through various connection holes is different from the center of mass of the blade.
2. The impeller device according to claim 1, characterized in that: The connecting hole is a round hole extending along the radial direction of the middle plate, and the length of the fixing block along the radial direction of the middle plate is matched with the length of the round hole.
3. The impeller device according to claim 1, characterized in that: The fixing block is arranged at the front end of the blade along the wind inlet direction.
4. The impeller device according to claim 1, characterized in that: Along the central axis direction of the middle disk, the cross-sectional dimensions of each type of connecting hole are the same.
5. The impeller device according to claim 1, characterized in that: Along the circumference of the central axis of the middle disk, each type of connection holes is arranged at equal intervals.
6. The impeller device according to claim 1, characterized in that: Along the thickness direction of the blade, the thickness of the fixing block is not less than the thickness of the blade.
7. The impeller device according to claim 1, characterized in that: The width of the fixing block is not less than the thickness of the middle plate.
8. The impeller device according to claim 1, characterized in that: The blade comprises at least two parts separated by the fixing block, a gap for accommodating the fixing block is provided between the at least two parts, and a thickness of the middle plate is not greater than a width of the gap.
9. The impeller device according to claim 1, characterized in that: The number of the middle plates is at least two, and at least two of the middle plates are arranged in sequence and spaced apart along the central axis direction of the middle plate.
10. A range hood, characterized in that: The range hood comprises the impeller device according to any one of claims 1-9.