Vibration reduction mechanism and range hood

Abstract

The utility model provides a vibration reduction mechanism and a range hood, and relates to the technical field of kitchen appliances, the vibration reduction mechanism provided by the utility model comprises a mounting assembly and a vibration reduction assembly, the mounting assembly is used for being mounted on a shell of a motor; the vibration reduction assembly comprises an elastic piece and a balance weight piece, one end of the elastic piece is detachably connected with the installation assembly, and the other end of the elastic piece is connected with the balance weight piece. According to the vibration reduction mechanism, the technical problem that in the prior art, a motor serves as a direct source of vibration and is not effectively controlled is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a vibration reduction mechanism and a range hood. Background Art

[0002] The noise of the range hood has become an important noise source in the user's home. The range hood often generates noise during operation, which affects the user experience. On the one hand, the distance between the fan part of the range hood and the user is relatively close, and the working noise of the range hood is relatively large. In addition, because there is a time difference between users in the building cooking, during the off-peak cooking period, the public flue resistance is small and the exhaust is smooth; during the peak cooking period, the public flue resistance is large and the exhaust is difficult. The floor where the user lives also has an impact. The public flue resistance on the high floor is small and the exhaust is smooth; the public flue resistance on the low floor is large and the exhaust is difficult. In order to ensure the exhaust effect, more and more range hoods now use variable frequency motors, which can adjust the motor speed in real time according to the change of resistance. When the resistance is large, the speed is increased to ensure the exhaust efficiency, but it also brings problems of large vibration and noise.

[0003] During the operation of the range hood, the transmission path of the vibration generated by the motor is: motor → motor bracket → volute → main chassis. The main noise reduction measure at present is to set a rubber vibration damping pad between the motor and the motor bracket to reduce the vibration transmission rate from the motor to the bracket, but the motor, as the direct source of vibration, has not been effectively controlled. Utility Model Content

[0004] The utility model aims to provide a vibration reduction mechanism and a range hood to alleviate the technical problem in the related art that the motor is a direct source of vibration and has not been effectively controlled.

[0005] In a first aspect, the vibration reduction mechanism provided by the utility model comprises: a mounting assembly and a vibration reduction assembly, wherein the mounting assembly is used to be mounted on a housing of a motor;

[0006] The vibration reduction assembly comprises an elastic member and a counterweight member, one end of the elastic member is detachably connected to the mounting assembly, and the other end of the elastic member is connected to the counterweight member.

[0007] Optionally, the elastic member includes a spring, and the vibration reduction mechanism further includes a limiting plate, which is rotatably connected to the mounting assembly, and the limiting plate has a limiting state for limiting the spring at the mounting assembly and an unlocking state for unlocking the spring.

[0008] Optionally, the mounting assembly is provided with an annular groove, one end of the spring is detachably connected to the annular groove, and the limiting plate is rotatably connected to the opening end of the annular groove to overlap or stagger with the opening of the annular groove.

[0009] Optionally, the mounting assembly includes a mounting base and a support base. The mounting base is used to be mounted on the outer shell of the motor. The support base is arranged on the mounting base, and an annular groove is provided on the surface of the support base facing away from the mounting base.

[0010] Optionally, the support base is detachably mounted on the mounting base.

[0011] Optionally, the support base is provided with a first mounting through-hole, and the mounting base is provided with a second mounting through-hole. A threaded connector passes through the first mounting through-hole and the second mounting through-hole.

[0012] Optionally, the first mounting through-hole is coaxially arranged with the annular groove.

[0013] Optionally, the mounting base is annular or arc-shaped, and the length direction of the spring is arranged along the radial direction of the mounting base.

[0014] Optionally, the damping mechanism includes a plurality of damping components. Support bases equal in number to the damping components are uniformly arranged on the outer peripheral wall of the mounting base, and the springs in the plurality of damping components are respectively mounted on the plurality of support bases one by one.

[0015] In a second aspect, the range hood provided by the present utility model includes a motor and the above-mentioned damping mechanism, and the mounting assembly in the damping mechanism is mounted on the outer shell of the motor.

[0016] The damping mechanism provided by the present utility model includes a mounting assembly and a damping component. The mounting assembly is used to be mounted on the outer shell of the motor; the damping component includes an elastic member and a counterweight member. One end of the elastic member is detachably connected to the support base, and the other end of the elastic member is connected to the counterweight member. The damping mechanism provided by the present utility model is mounted on the outer shell of the motor through the mounting assembly. During the operation of the motor, vibrations are generated. The vibrations are transmitted to the elastic member and the counterweight member through the mounting assembly. When vibrations are input, the elastic member deforms to absorb the input energy; when the vibrations are released, the elastic member releases the stored potential energy to counteract the vibrations, realizing the attenuation of the motor vibrations and reducing the vibration transfer rate to the motor bracket; in addition, the elastic member is detachably connected to the mounting assembly, and suitable elastic members and counterweight members can be replaced on the mounting assembly according to the vibration frequency of the motor to be damped by the damping mechanism, so that the vibration frequency of the damping mechanism is consistent with the vibration frequency of the motor, and the vibration energy of the motor can be better absorbed.

[0017] The range hood provided by the present utility model includes a motor and a damping mechanism. The damping mechanism is mounted on the outer shell of the motor. During the operation of the range hood, the motor generates vibrations. The damping mechanism absorbs the vibration energy of the motor, realizes the attenuation of the motor vibrations, and reduces the vibration transfer rates to the motor bracket, the volute and the main cabinet, thereby playing a role in noise reduction. Description of the Drawings

[0018] To more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the related art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the related art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Structural schematic diagram of the vibration damping mechanism provided by the embodiment of the present utility model;

[0020] Figure 2 Structural schematic diagram of the vibration damping component in the vibration damping mechanism provided by the embodiment of the present utility model;

[0021] Figure 3 Structural schematic diagram of the mounting component in the vibration damping mechanism provided by the embodiment of the present utility model;

[0022] Figure 4 For Figure 3 Partial enlarged view of the position A in

[0023] Figure 5 Structural schematic diagram of the range hood provided by the embodiment of the present utility model;

[0024] Figure 6 For Figure 5 Partial enlarged view of the position B in

[0025] Icon: 100 - mounting component; 101 - annular groove; 110 - mounting seat; 120 - support seat; 130 - screw; 200 - vibration damping component; 210 - spring; 220 - counterweight; 300 - limiting piece; 310 - pin shaft; 400 - motor; 410 - motor bracket; 500 - volute; 600 - main cabinet. Specific embodiments

[0026] The following will clearly and completely describe the technical solutions of the present utility model with reference to the drawings. Obviously, the described embodiments are some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0027] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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 therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "coupling" shall 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 utility model can be understood according to specific situations.

[0029] As Figure 1 and Figure 2 shown, the damping mechanism provided by the embodiment of the present utility model includes: a mounting assembly 100 and a damping assembly 200. The mounting assembly 100 is used for mounting on the outer shell of the motor 400; the damping assembly 200 includes an elastic member and a counterweight 220. One end of the elastic member is detachably connected to the mounting assembly 100, and the other end of the elastic member is connected to the counterweight 220.

[0030] Specifically, the elastic member can be installed on the mounting assembly 100 by means of snap connection or bolt connection. The counterweight 220 is in a block shape and can be fixedly installed on the elastic member by means of bonding or welding, or detachably installed on the elastic member by means of snap connection or bolt connection. The mounting assembly 100 can be installed on the outer shell of the motor 400 by means of snap connection or bolt connection. When the mounting assembly 100 is installed on the outer shell of the motor 400, the elastic member is located on the side of the mounting assembly 100 away from the motor 400.

[0031] The vibration reduction mechanism provided by the embodiment of the utility model is installed on the housing of the motor 400 through the installation component 100. The motor 400 generates vibration during operation, and the vibration is transmitted to the elastic member and the counterweight 220 through the installation component 100. When the vibration is input, the elastic member deforms to absorb the input energy; when the vibration is released, the elastic member releases the stored potential energy to offset the vibration, thereby achieving attenuation of the vibration of the motor 400 and reducing the vibration transmission rate to the motor bracket 410; in addition, the elastic member is detachably connected to the installation component 100, and according to the vibration frequency of the motor 400 to be damped by the vibration reduction mechanism, a suitable elastic member and the counterweight 220 can be replaced on the installation component 100 to make the vibration frequency of the vibration reduction mechanism consistent with the vibration frequency of the motor 400, so as to better absorb the vibration energy of the motor 400.

[0032] The elastic member may include an elastic sheet, one end of which is mounted on the mounting assembly 100 by bolts, and the other end of which is provided with a counterweight 220 . The elastic member and the counterweight 220 cooperate to absorb vibration energy of the motor 400 .

[0033] In one embodiment of the present application, Figure 1 and Figure 2 As shown, the elastic member includes a spring 210, and the vibration reduction mechanism also includes a limiting plate 300, which is rotatably connected to the mounting assembly 100. The limiting plate 300 has a limiting state for limiting the spring 210 in the mounting assembly 100 and an unlocking state for unlocking the spring 210.

[0034] The mounting assembly 100 has an installation area for installing a spring 210, and the limiting plate 300 is rotatably connected to the limiting plate 300 via a pin shaft 310, and the pin shaft 310 is located at the edge of the installation area so that the limiting plate 300 can rotate around the pin shaft 310 to a position that coincides with or is offset from the installation area, that is, the limiting plate 300 can be switched between a limited state and an unlocked state.

[0035] One or more limiting pieces 300 may be provided on the installation component 100. When the installation component 100 is provided with a limiting piece 300, the length of the limiting piece 300 is greater than the diameter of the spring 210. Before installing the spring 210, the limiting piece 300 is rotated around the pin shaft 310 to an unlocked state. After one end of the spring 210 is placed in the installation area, the limiting piece 300 is rotated around the pin shaft 310 to a limited state. The limiting piece 300 is inserted into the spring 210 and abuts against the spring 210, thereby limiting the spring 210 in the installation area. When there are multiple limiting pieces 300, the multiple limiting pieces 300 are distributed at intervals around the circumference of the installation area, and the length of each limiting piece 300 is greater than the diameter of the spring wire. Before installing the spring 210, the multiple limiting pieces 300 are rotated around the corresponding pin shaft 310 to the unlocked state. After one end of the spring 210 is placed in the installation area, the multiple limiting pieces 300 are rotated around the corresponding pin shaft 310 to the limited state. The multiple limiting pieces 300 are all inserted into the spring 210 and abut against the spring 210. The multiple limiting pieces 300 cooperate to limit the spring 210 in the installation area. When the spring 210 needs to be removed from the installation assembly 100, the limiting piece 300 is rotated around the pin shaft 310 to the unlocked state, so that the spring 210 can be removed. The elastic member includes the spring 210, and the limiting and unlocking of the spring 210 are realized by the limiting member, so that the installation and removal of the spring 210 are conveniently realized.

[0036] As an implementation method, the installation area can be set to a plane so that the spring 210 directly abuts against the plane in the installation area. The limiting piece 300 is set to a bent shape, and the part of the limiting piece 300 connected to the pin 310 directly abuts against the installation assembly 100. There is a gap between the limiting part of the limiting piece 300 and the installation area to accommodate the spring wire.

[0037] In one embodiment of the utility model, the mounting assembly 100 is provided with an annular groove 101, one end of the spring 210 is detachably connected to the annular groove 101, and the limiting plate 300 is rotatably connected to the opening end of the annular groove 101 to overlap or stagger with the opening of the annular groove 101.

[0038] Specifically, the annular groove 101 is provided in the installation area, and the diameter of the annular groove 101 is adapted to the diameter of the spring 210, and the depth of the annular groove 101 is slightly greater than the diameter of the spring wire. The axis of the pin 310 is provided along the depth direction of the annular groove 101, and the pin 310 can be provided on the inner circle or outer periphery of the annular groove 101. In this embodiment, Figure 4As shown, the pin 310 is arranged on the outer periphery of the annular groove 101 to facilitate the movement of the limiting piece 300. When installing the spring 210, the limiting piece 300 is rotated to a position staggered with the opening of the annular groove 101, and the end of the spring 210 away from the counterweight 220 is placed in the annular groove 101, and then the limiting piece 300 is rotated to a position overlapping with the opening of the annular groove 101. The limiting piece 300 cooperates with the bottom wall of the annular groove 101 to limit the spring 210, preventing the end of the spring 210 connected to the mounting assembly 100 from shaking, thereby improving the stability of the connection between the spring 210 and the mounting assembly 100; in addition, the annular groove 101 is arranged on the mounting assembly 100, and the limiting piece 300 can be arranged in a flat plate shape to limit the spring 210, which is convenient for the production of the limiting piece 300.

[0039] like Figure 3 and Figure 4 As shown, the mounting assembly 100 includes a mounting seat 110 and a support seat 120 . The mounting seat 110 is used to be mounted on the housing of the motor 400 . The support seat 120 is disposed on the mounting seat 110 . The annular groove 101 is disposed on the surface of the support seat 120 away from the mounting seat 110 .

[0040] Specifically, the mounting seat 110 can be configured to be arc-shaped or annular to match the housing of the motor 400. The inner surface of the mounting seat 110 is used to abut against the housing of the motor 400, and the support seat 120 is installed on the outer surface of the mounting seat 110. Figure 3 As shown, the support seat 120 is cylindrical, one end of the support seat 120 abuts against the outer surface of the mounting seat 110, and the end surface of the support seat 120 away from the mounting seat 110 is provided with an annular groove 101, the annular groove 101 is coaxially arranged with the mounting seat 110, and the spring 210 is installed in the annular groove 101. The mounting assembly 100 includes the mounting seat 110 and the support seat 120, and the mounting assembly 100 is connected with the housing of the motor 400 and the spring 210.

[0041] In some embodiments, the support base 120 may be fixedly connected to the mounting base 110 by bonding or welding.

[0042] In one embodiment of the present invention, the support seat 120 is detachably mounted on the mounting seat 110. Specifically, the support seat 120 can be detachably connected to the mounting seat 110 by means of a clamping or threaded connection, and the support seat 120 with a suitable annular groove 101 can be installed on the mounting seat 110 according to the diameter of the spring 210 to be installed.

[0043] When the support base 120 is connected to the mounting base 110 by a threaded connector, the support base 120 is provided with a first mounting through-hole, and the mounting base 110 is provided with a second mounting through-hole, and the threaded connector passes through the first mounting through-hole and the second mounting through-hole. Specifically, the first mounting through-hole is provided as a clearance hole or a threaded hole, the second mounting through-hole is provided as a threaded hole, the threaded connector is provided as a screw 130, the length of the screw 130 is greater than the sum of the thickness of the support base 120 and the thickness of the mounting base 110, and the screw 130 passes through the first mounting through-hole and the second mounting through-hole from the side of the support base 120 facing away from the mounting base 110 and extends from the side of the mounting base 110 facing away from the support base 120. While connecting the support base 120 and the mounting base 110, it can also be connected to the outer shell of the motor 400, and at the same time, the mounting of the mounting base 110 is realized, reducing the use of connectors.

[0044] The first mounting through-hole can be provided on the outer periphery of the annular groove 101, or the first mounting through-hole is provided within the region surrounded by the annular groove 101. In this embodiment, the first mounting through-hole is coaxially arranged with the annular groove 101, and when the screw 130 passes through the first mounting through-hole, it is located within the region surrounded by the annular groove 101, making reasonable use of the space on the support base 120.

[0045] The mounting base 110 is annular or arc-shaped, and the length direction of the spring 210 is arranged along the radial direction of the mounting base 110.

[0046] Specifically, when the mounting base 110 is annular, the inner diameter of the mounting base 110 is greater than the diameter of the outer shell of the corresponding motor 400, so that the mounting base 110 can be sleeved on the outer periphery of the motor 400. When the mounting base 110 is arc-shaped, the radian of the mounting base 110 matches the outer shell of the motor 400. The support base 120 is detachably mounted on the outer peripheral surface of the mounting base 110 through screws 130, and the depth direction of the annular groove 101 on the support base 120 is arranged along the radial direction of the mounting base 110. When the spring 210 is installed in the annular groove 101, the length direction of the spring 210 is the same as the depth direction of the annular groove 101, so that the length direction of the spring 210 is arranged along the radial direction of the mounting base 110. When the circular mounting base 110 is mounted on the outer shell of the motor 400, first sleeve the mounting base 110 on the outer periphery of the motor 400, and then rotate the screw 130 connecting the support base 120 and the mounting base 110 so that the screw 130 abuts against the outer shell of the motor 400. Multiple screws 130 cooperate with each other, or one screw 130 cooperates with the inner peripheral wall of the mounting base 110 to clamp the outer shell of the motor 400, realizing the convenient installation of the mounting base 110; in addition, the mounting base 110 is annular or arc-shaped, which can increase the contact area between the mounting base 110 and the outer shell of the motor 400, so that the vibration generated by the motor 400 can be better transmitted to the spring 210 through the mounting base 110. When the vibration energy of the motor 400 is transmitted to the mounting base 110, the mounting base 110 vibrates along its radial direction, so that the length direction of the spring 210 is arranged along the radial direction of the mounting base 110, and the spring 210 expands and contracts along its length direction, thereby better absorbing the vibration energy of the motor 400.

[0047] In one embodiment, the vibration damping mechanism includes a vibration damping assembly 200. There is a support base 120 provided on the mounting base 110, and the spring 210 in one vibration damping assembly 200 is installed on the support base 120.

[0048] In another embodiment, the vibration damping mechanism includes a plurality of vibration damping assemblies 200. The outer peripheral wall of the mounting base 110 is evenly provided with support bases 120 equal in number to the vibration damping assemblies 200, and the springs 210 in the plurality of vibration damping assemblies 200 are correspondingly installed on the plurality of support bases 120 one by one.

[0049] Specifically, the plurality of support bases 120 are all installed on the outer peripheral wall of the mounting base 110 through screws 130. An annular groove 101 is provided on the end face of each support base 120 facing away from the mounting base 110, and the plurality of springs 210 are correspondingly installed in the annular grooves 101 of the plurality of support bases 120 one by one. During the vibration of the motor 400, the plurality of vibration damping assemblies 200 cooperate to absorb the vibration of the motor 400, which can play a role in vibration damping and noise reduction.

[0050] The range hood provided by the embodiment of the utility model includes a motor 400 and the above-mentioned vibration damping mechanism, and the mounting component 100 in the vibration damping mechanism is mounted on the outer shell of the motor 400.

[0051] Specifically, as Figure 5 and Figure 6 shown, the range hood provided by the embodiment of the utility model further includes a motor bracket 410, a volute 500 and a main cabinet 600. The volute 500 is mounted in the main cabinet 600, the motor 400 is mounted on the volute 500 through the motor bracket 410, and the mounting seat 110 in the vibration damping mechanism is sleeved and mounted on the outer shell of the motor 400. During the operation of the range hood, the motor 400 generates vibrations. The vibration damping mechanism absorbs the vibration energy of the motor 400, realizes the attenuation of the vibrations of the motor 400, and reduces the vibration transfer rate to the motor bracket 410, the volute 500 and the main cabinet 600, thereby playing a role in noise reduction.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model 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 described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A vibration damping mechanism, characterized in that, include: A mounting assembly (100) and a vibration reduction assembly (200), wherein the mounting assembly (100) is used to be mounted on a housing of a motor (400); The vibration reduction assembly (200) comprises an elastic member and a counterweight member (220); one end of the elastic member is detachably connected to the mounting assembly (100), and the other end of the elastic member is connected to the counterweight member (220).

2. The vibration damping mechanism according to claim 1, wherein, The elastic member comprises a spring (210), and the vibration reduction mechanism further comprises a limiting plate (300), wherein the limiting plate (300) is rotatably connected to the mounting assembly (100), and the limiting plate (300) has a limiting state for limiting the spring (210) to be positioned at the mounting assembly (100) and an unlocking state for unlocking the spring (210).

3. The shock-absorbing mechanism according to claim 2, wherein The mounting assembly (100) is provided with an annular groove (101), one end of the spring (210) is detachably connected to the annular groove (101), and the limiting plate (300) is rotatably connected to the open end of the annular groove (101) so as to overlap or stagger with the opening of the annular groove (101).

4. The vibration damping mechanism according to claim 3, wherein The mounting assembly (100) comprises a mounting seat (110) and a support seat (120), wherein the mounting seat (110) is used for being mounted on a housing of a motor (400), the support seat (120) is arranged on the mounting seat (110), and the annular groove (101) is arranged on a surface of the support seat (120) facing away from the mounting seat (110).

5. The damping mechanism according to claim 4, characterized in that The support seat (120) is detachably mounted on the mounting seat (110).

6. The vibration damping mechanism according to claim 5, wherein The support seat (120) is provided with a first mounting through hole, the mounting seat (110) is provided with a second mounting through hole, and the threaded connection member passes through the first mounting through hole and the second mounting through hole.

7. The vibration damping mechanism according to claim 6, characterized in that, The first mounting through hole is coaxially arranged with the annular groove (101).

8. The damping mechanism according to claim 4, characterized in that, The mounting seat (110) is annular or arc-shaped, and the length direction of the spring (210) is arranged along the radial direction of the mounting seat (110).

9. The vibration damping mechanism according to claim 8, wherein, The vibration reduction mechanism comprises a plurality of vibration reduction assemblies (200); the outer peripheral wall of the mounting seat (110) is evenly provided with support seats (120) equal in number to the vibration reduction assemblies (200); and the springs (210) in the plurality of vibration reduction assemblies (200) are mounted on the plurality of support seats (120) in a one-to-one correspondence.

10. An oil fume suction machine, characterized in that, It comprises a motor (400) and the vibration reduction mechanism according to any one of claims 1 to 9, wherein the mounting assembly (100) in the vibration reduction mechanism is mounted on a housing of the motor (400).

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