Motor damping device and extractor hood
By designing an adjustable stiffness motor vibration damping device in the range hood, and utilizing a combination of air springs and mechanical springs, the problems of vibration and noise of variable frequency motors are solved, achieving better vibration and noise control.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU ROBAM APPLIANCES CO LTD
- Filing Date
- 2024-08-07
- Publication Date
- 2026-06-19
Smart Images
Figure CN224385231U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vibration damping devices, and in particular to a motor vibration damping device and a range hood. Background Technology
[0002] To ensure effective smoke extraction, range hoods are equipped with variable frequency motors that adjust the motor speed in real time according to changes in resistance. This means that the speed can be increased when the resistance is high to ensure smoke extraction efficiency, but it also brings problems such as greater vibration and noise, which affects the user experience.
[0003] As the motor speed increases, the vibration increases, resulting in increased noise. Since the motor is the direct source of vibration, current technology incorporates vibration damping structures. However, these structures cannot vary stiffness to achieve vibration control at specific frequencies. Utility Model Content
[0004] The purpose of this application is to provide a motor vibration damping device and a range hood. The motor vibration damping device can vary stiffness, and its stiffness gradually adapts to changes in working conditions, so as to better absorb and consume energy in the system and reduce the generation of vibration and noise.
[0005] This application provides a motor vibration damping device, including a connecting seat and an elastic vibration damping system;
[0006] The connecting seat is mounted on the motor;
[0007] The elastic damping system includes an elastic mechanism and a counterweight; one end of the elastic mechanism is connected to the connecting seat, and the other end of the elastic mechanism is connected to the counterweight, so that the elastic mechanism generates elastic force;
[0008] The stiffness of the elastic mechanism is adjustable.
[0009] In the above technical solution, the elastic mechanism further includes an air spring, which is installed between the connecting seat and the counterweight.
[0010] In the above technical solution, the elastic mechanism further includes a mechanical spring assembly, which is installed between the connecting seat and the counterweight, and is connected in series with the air spring.
[0011] In the above technical solution, the mechanical spring assembly further includes multiple mechanical springs arranged in parallel, with the multiple mechanical springs spaced apart.
[0012] In the above technical solution, the mechanical spring assembly further includes a first support plate;
[0013] One end of multiple mechanical springs is connected to a connecting seat, and the other end of multiple mechanical springs is connected to one side of the first support plate;
[0014] One end of the air spring is connected to the other side of the first support plate, and the counterweight is connected to the other end of the air spring.
[0015] In the above technical solution, the first support plate is further provided with a plurality of first protrusions, and the first protrusions correspond one-to-one with the mechanical springs;
[0016] The mechanical spring is sleeved on and connected to the first boss.
[0017] In the above technical solution, the elastic mechanism further includes a second support plate;
[0018] The second support plate is spaced apart from the first support plate, and multiple mechanical springs are installed between the first support plate and the second support plate;
[0019] The second support plate is connected to the connecting seat on the side away from the mechanical spring.
[0020] In the above technical solution, the second support plate is further provided with multiple second protrusions, and each second protrusion corresponds to a mechanical spring.
[0021] The mechanical spring is sleeved on and connected to the second boss.
[0022] In the above technical solution, the connecting seat is further provided with at least one mounting hole to accommodate the installation of the elastic vibration damping system;
[0023] Mounting holes are made at the top and / or bottom of the connector.
[0024] This application also provides a range hood, including the motor vibration damping device described above.
[0025] Compared with the prior art, the beneficial effects of this application are as follows:
[0026] The motor vibration damping device provided in this application can achieve variable stiffness of the elastic damping system by adjusting the stiffness of the elastic mechanism. By gradually adapting its stiffness to changes in working conditions, the elastic damping system can better absorb and consume energy in the system, effectively reducing the generation of vibration and noise.
[0027] This application also provides a range hood, including the motor vibration damping device described above. Based on the above analysis, it is clear that the range hood also possesses the aforementioned beneficial effects, which will not be elaborated upon further here. Attached Figure Description
[0028] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0029] Figure 1 This is a structural schematic diagram of the range hood provided in this application;
[0030] Figure 2 for Figure 1 Enlarged view of point A in the middle;
[0031] Figure 3 A schematic diagram of the motor vibration damping device provided in this application;
[0032] Figure 4 This is a partial structural schematic diagram of the motor vibration damping device provided in this application.
[0033] In the diagram: 101-Connecting seat; 102-Elastic damping system; 103-Motor; 104-Elastic mechanism; 105-Counterweight; 106-Connecting hole; 107-Air spring; 108-Mechanical spring assembly; 109-Mechanical spring; 110-First support plate; 111-First boss; 112-Second support plate; 113-Second boss. Detailed Implementation
[0034] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0035] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0037] Example 1
[0038] See Figures 1 to 4 As shown, the motor vibration damping device provided in this application can be applied to the motor 103 of a range hood to reduce the vibration and noise generated during the operation of the motor 103.
[0039] Specifically, the motor vibration damping device includes a connecting seat 101 and an elastic vibration damping system 102. The connecting seat 101 is sleeved on the motor 103, and the elastic vibration damping system 102 is connected to the connecting seat 101 to connect the elastic vibration damping system 102 to the motor 103. Figure 2 and Figure 3 As shown, the connecting seat 101 is annular and surrounds the circumference of the motor 103's housing. The elastic vibration damping system 102 includes an elastic mechanism 104 and a counterweight 105; one end of the elastic mechanism 104 is connected to the connecting seat 101, and the other end is connected to the counterweight 105. The weight of the counterweight 105 acts on the elastic mechanism 104, enabling the elastic mechanism 104 to generate elastic force. When vibration is input, the elastic mechanism 104 deforms to absorb the input energy; when vibration is released, the elastic mechanism 104 releases the stored potential energy to counteract the vibration, thereby achieving the purpose of vibration damping.
[0040] Furthermore, the stiffness of the elastic mechanism 104 is adjustable. During the operation of the motor 103, when the vibration of the motor 103 is stable, the vibration of the elastic damping system also tends to stabilize. The elastic damping system absorbs the vibration energy of the motor 103 to achieve the purpose of vibration reduction. By adjusting the stiffness of the elastic mechanism 104, the elastic damping system can achieve variable stiffness, gradually adapting its stiffness to changes in working conditions. This allows the elastic damping system to better absorb and dissipate energy within the system, effectively reducing vibration and noise generation.
[0041] In an optional embodiment, the connector 101 has at least one mounting hole for mounting the elastic damping system 102; the mounting hole is located at the top and / or bottom of the connector 101.
[0042] In this embodiment, since the connecting seat 101 is annular, the direction of the elastic force exerted by the elastic damping system on the connecting seat 101 is radial. To ensure better vibration damping effect of the counterweight 105, when the elastic damping system is located at the top or bottom of the connecting seat 101, the elastic force generated by the elastic damping system is collinear with gravity, achieving the best vibration damping effect. Of course, the installation direction of the elastic damping system can also be slightly offset from the direction of gravity by a certain angle.
[0043] like Figure 4 As shown in the figure, a mounting hole is provided on the top of the connecting seat 101, and a corresponding connecting hole 106 is provided on the elastic damping system 102, so that the connecting seat 101 and the elastic damping system 102 can be connected by screws.
[0044] In an optional embodiment, the elastic mechanism 104 includes an air spring 107, which is installed between the connecting seat 101 and the counterweight 105. The stiffness of the air spring 107 is adjustable. By adjusting the stiffness of the air spring 107, the stiffness of the elastic vibration damping system can be adjusted, thereby effectively reducing the generation of vibration and noise.
[0045] In an optional embodiment, the elastic mechanism 104 further includes a mechanical spring assembly 108, which is installed between the connecting seat 101 and the counterweight 105, and is connected in series with the air spring 107. The mechanical spring assembly 108 and the air spring 107 are connected in series, and both can vibrate, forming a two-stage vibration energy attenuation and improving the vibration reduction effect. Furthermore, the mechanical spring assembly 108 increases the adjustment range of the stiffness of the elastic vibration damping system.
[0046] In an optional embodiment, the mechanical spring assembly 108 includes a plurality of mechanical springs 109 arranged in parallel, with the plurality of mechanical springs 109 spaced apart.
[0047] In this embodiment, such as Figure 4 As shown in the figure, four mechanical springs 109 are arranged at intervals, which can evenly distribute the pressure to each spring, balance the pressure in the system, reduce the pressure on individual springs, thereby reducing the spring failure rate and effectively improving the service life of the springs. Parallel connection of the mechanical springs 109 can enhance the vibration damping effect, alleviate system vibration, and thus make the system more stable and reliable.
[0048] Example 2
[0049] The motor vibration damping device in this embodiment is an improvement on the above embodiments. The technical content disclosed in the above embodiments will not be described again, and the content disclosed in the above embodiments also belongs to the content disclosed in this embodiment.
[0050] See Figure 4 As shown, in an optional embodiment, the mechanical spring assembly 108 includes a first support plate 110; one end of a plurality of mechanical springs 109 is connected to a connecting seat 101, and the other end of the plurality of mechanical springs 109 is connected to one side of the first support plate 110; one end of an air spring 107 is connected to the other side of the first support plate 110, and a counterweight 105 is connected to the other end of the air spring 107.
[0051] In this embodiment, since the counterweight 105 is small in size, while the mechanical spring assembly 108, which consists of multiple mechanical springs 109, covers a large area, the mechanical spring assembly 108 is disposed between the connecting seat 101 and the air spring 107 so that the connecting seat 101 and the air spring 107 can provide a relatively large connection area, thereby improving the reliability of the connection between the components.
[0052] Furthermore, a first support plate 110 is provided between the air spring 107 and the multiple mechanical springs 109. The first support plate 110 can provide a flat mounting surface to fix the mechanical springs 109 and to space the multiple mechanical springs 109 apart, thereby better balancing the pressure and making the vibration damping system more stable.
[0053] In an optional embodiment, the first support plate 110 is provided with a plurality of first protrusions 111, and each first protrusion 111 corresponds to a mechanical spring 109; the mechanical spring 109 is sleeved on the first protrusion 111 and connected to the first protrusion 111. The first protrusion 111 can limit the mechanical spring 109 and prevent the mechanical spring 109 from deforming left and right when it bounces.
[0054] In an optional embodiment, the elastic mechanism 104 further includes a second support plate 112; the second support plate 112 is spaced apart from the first support plate 110, and a plurality of mechanical springs 109 are installed between the first support plate 110 and the second support plate 112; the side of the second support plate 112 away from the mechanical springs 109 is connected to the connecting seat 101.
[0055] In this embodiment, a second support plate 112 is provided between the connecting seat 101 and the multiple mechanical springs 109. One side of the second support plate 112 is connected to the arc surface of the connecting seat 101, and the other side of the second support plate 112 can provide a flat mounting surface to realize the installation and fixation of the mechanical springs 109 and to allow the multiple mechanical springs 109 to be spaced apart, thereby better balancing the pressure and making the vibration damping system more stable.
[0056] In an optional embodiment, the second support plate 112 is provided with a plurality of second protrusions 113, and each second protrusion 113 corresponds to a mechanical spring 109; the mechanical spring 109 is sleeved on the second protrusion 113 and connected to the second protrusion 113. The second protrusion 113 can limit the mechanical spring 109 and prevent the mechanical spring 109 from deforming left and right when it bounces.
[0057] Example 3
[0058] Embodiment 3 of this application provides a range hood that includes the motor vibration damping device of any of the above embodiments. Therefore, it has all the beneficial technical effects of the motor vibration damping device of any of the above embodiments, which will not be repeated here.
[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application. In addition, those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are meant to be within the scope of this application and form different embodiments.
Claims
1. An electric machine vibration damping device, characterized by comprising: Includes a connecting seat (101) and an elastic damping system (102); The connecting seat (101) is sleeved on the motor (103); The elastic damping system (102) includes an elastic mechanism (104) and a counterweight (105); one end of the elastic mechanism (104) is connected to the connecting seat (101), and the other end of the elastic mechanism (104) is connected to the counterweight (105) so that the elastic mechanism (104) generates elastic force; The stiffness of the elastic mechanism (104) is adjustable.
2. The motor vibration damping device according to claim 1, characterized in that, The elastic mechanism (104) includes an air spring (107) which is mounted between the connecting seat (101) and the counterweight (105).
3. The motor vibration damping device according to claim 2, characterized in that, The elastic mechanism (104) further includes a mechanical spring assembly (108), which is installed between the connecting seat (101) and the counterweight (105), and the mechanical spring assembly (108) is connected in series with the air spring (107).
4. The motor vibration damping device according to claim 3, characterized in that, The mechanical spring assembly (108) includes a plurality of mechanical springs (109) arranged in parallel, with the plurality of mechanical springs (109) spaced apart.
5. The motor vibration damping device according to claim 4, characterized in that, The mechanical spring assembly (108) includes a first support plate (110); One end of each of the mechanical springs (109) is connected to the connecting seat (101), and the other end of each of the mechanical springs (109) is connected to one side of the first support plate (110). One end of the air spring (107) is connected to the other side of the first support plate (110), and the counterweight (105) is connected to the other end of the air spring (107).
6. The motor vibration damping device according to claim 5, characterized in that, The first support plate (110) is provided with a plurality of first protrusions (111), and the first protrusions (111) correspond one-to-one with the mechanical springs (109); The mechanical spring (109) is sleeved on the first boss (111) and connected to the first boss (111).
7. The motor vibration damping device according to claim 5, characterized in that, The elastic mechanism (104) also includes a second support plate (112); The second support plate (112) is spaced apart from the first support plate (110), and a plurality of mechanical springs (109) are installed between the first support plate (110) and the second support plate (112); The second support plate (112) is connected to the connecting seat (101) on the side away from the mechanical spring (109).
8. The motor vibration damping device according to claim 7, characterized in that, The second support plate (112) is provided with a plurality of second protrusions (113), and the second protrusions (113) correspond one-to-one with the mechanical springs (109); The mechanical spring (109) is sleeved on the second boss (113) and connected to the second boss (113).
9. The motor vibration damping device according to claim 1, characterized in that, The connecting seat (101) has at least one mounting hole for mounting the elastic damping system (102); The mounting hole is opened at the top and / or bottom of the connector (101).
10. A range hood, characterized in that, Includes the motor vibration damping device as described in any one of claims 1 to 9.