Vibration reduction mounting assembly of motor for range hood and range hood

Abstract

The utility model provides a range hood motor vibration damping installation assembly and a range hood, the vibration damping installation assembly comprises a motor, a volute bottom plate and a vibration damping assembly connecting the motor and the volute bottom plate, the vibration damping assembly comprises a plunger, a linear spring, a damping pad and a belleville spring, the linear spring, the damping pad and the belleville spring are sequentially arranged on the outer side of the plunger in a sleeving mode, the linear spring interacts with the belleville spring, the motor and the volute bottom plate are connected to the two ends of the plunger respectively, and parallel bearing of the linear spring and the belleville spring is achieved through interaction of the linear spring and the belleville spring. The bearing capacity of the vibration reduction mounting assembly is improved, the impact resistance of the vibration reduction mounting assembly is high, the stability is good, the positive rigidity of the linear springs and the negative rigidity of the belleville springs are offset, quasi-zero-rigidity vibration isolation is achieved, the vibration isolation interval is widened, and the low-frequency vibration isolation effect is improved; the vibration reduction connection between the motor and the volute bottom plate is ensured, and the running stability of the whole range hood is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a range hood technical field, especially a kind of range hood motor's damping installation component and range hood. BACKGROUND

[0002] With the continuous progress of fan and motor technology, the range hood industry continues to launch ultra-thin design range hood. The oil fume of the range hood directly enters the fan inlet after passing through the oil screen, and air needs to be introduced around the inlet of the fan. Due to the limitation of the overall appearance size (the overall thickness b ≤ 200 mm, the height h of the smoke collection cavity ≤ 420). After the overall thinning, the motor matched with it needs to be designed as a thin type, and the thickness of the motor body is 35~50 mm, and the diameter is 120~195 mm. After the volume of the motor is thinned, the weight per unit volume increases, which puts higher requirements on the impact resistance of the damping structure of the motor. The existing damping scheme of the motor uses four rubber pads to isolate the vibration transmission between the motor and the fan, but using rubber pads to isolate vibration transmission has the following disadvantages: the rubber pad has good absorption effect on 10-15 Hz low frequency, but professional damping materials need to be designed and selected according to the vibration characteristics of the overall machine, which is more expensive; the rubber pad is exposed to the oil fume environment for a long time, which can easily cause aging and damping effect decay over time; the impact resistance of the rubber pad is poor, and the stability is poor. SUMMARY

[0003] The technical problem to be solved by the utility model is to overcome the defects of the existing damping structure, such as poor low-frequency damping effect, easy aging failure, poor stability and impact resistance, and to provide a damping installation component for a range hood motor and a range hood.

[0004] The utility model solves the above technical problems by the following technical scheme:

[0005] The utility model provides a kind of damping installation component for range hood motor, it includes motor, volute bottom plate and the damping component of connecting the motor and the volute bottom plate, the damping component includes plunger, linear spring, damping pad and butterfly spring, the linear spring, damping pad and butterfly spring are successively set in the outside of the plunger, the linear spring and the butterfly spring interact, the motor and the volute bottom plate are respectively connected at the two ends of the plunger.

[0006] In the scheme, the motor is installed on the volute bottom plate through a damping assembly, the damping assembly includes a linear spring, a damping pad and a butterfly spring sleeved outside the plunger, and the linear spring interacts with the butterfly spring to realize parallel load bearing of the linear spring and the butterfly spring, thereby improving the load bearing capacity of the damping installation assembly, making the damping installation assembly have strong impact resistance and good stability, and the positive stiffness of the linear spring and the negative stiffness of the butterfly spring are offset to realize quasi-zero stiffness vibration isolation, widen the vibration isolation interval, and improve the low-frequency vibration isolation effect; the motor and the volute bottom plate are connected at two ends of the plunger respectively, so that the motor and the volute bottom plate are located at two ends of the damping assembly respectively, vibration isolation connection between the motor and the volute bottom plate is realized, and the stability of the whole range hood during operation is improved.

[0007] Preferably, an axial limiting piece is further arranged on the plunger and abuts against one side of the butterfly spring away from the damping pad.

[0008] In the scheme, the axial limiting piece is fixedly arranged on the plunger and abuts against one side of the butterfly spring away from the damping pad, thereby not only limiting the butterfly spring in the axial direction of the plunger to prevent the butterfly spring from sliding away from the damping pad, but also isolating the direct contact between the butterfly spring and the motor or the volute bottom plate to reduce the vibration transmission between the motor and the volute bottom plate.

[0009] Preferably, a radial limiting piece is further arranged on the plunger, the radial limiting piece is sleeved outside the periphery of the butterfly spring and abuts against the periphery of the butterfly spring.

[0010] In the scheme, the radial limiting piece is arranged on the plunger and sleeved outside the periphery of the butterfly spring and abuts against the periphery of the butterfly spring, so that the radial limiting piece limits the butterfly spring in the periphery of the butterfly spring, and the acting force of the butterfly spring can be in the axial direction of the plunger to prevent deflection.

[0011] Preferably, the axial limiting piece and the radial limiting piece are located on the axial limiting piece and form a cylindrical piece with the axial limiting piece, and the cylindrical piece forms an annular accommodating cavity with the plunger.

[0012] In the scheme, the radial limiting piece is located on the axial limiting piece and forms a cylindrical piece with the axial limiting piece, that is, the axial limiting piece and the radial limiting piece are integrally formed and form a cylindrical piece, and the cylindrical piece forms an annular accommodating cavity with the plunger for placing the damping pad and the butterfly spring and limiting the butterfly spring and the damping pad in the axial and radial directions.

[0013] Preferably, a first flat washer is arranged at one end of the linear spring away from the butterfly spring; and / or a second flat washer is arranged at one end of the linear spring close to the butterfly spring, and the second flat washer abuts against the damping washer.

[0014] In this scheme, a first flat washer is arranged at one end of the linear spring away from the butterfly spring, the first flat washer is sleeved on the plunger, the first flat washer supports one end of the linear spring away from the butterfly spring, and forms a flat support surface, so that the force of the linear spring can be along the axial direction of the plunger or parallel to the plunger, and direct contact between the linear spring and the motor or the volute bottom plate on the other side of the first flat washer is prevented; a second flat washer is arranged at one end of the linear spring close to the butterfly spring, and the second flat washer is sleeved on the plunger, so that the second flat washer and the first flat washer provide flat surfaces for the linear spring at both ends, and the force transmission process of the linear spring can be along the axial direction of the plunger.

[0015] Preferably, threaded segments are arranged at both ends of the plunger, and lock nuts are arranged on the threaded segments.

[0016] In this scheme, threaded segments are arranged at both ends of the plunger, and lock nuts are arranged on the threaded segments, so that the motor and the volute bottom plate are locked at both ends of the plunger and the linear spring and the butterfly spring are kept between the motor and the volute bottom plate to reduce the vibration transmission between the motor and the volute bottom plate.

[0017] Preferably, the plurality of damping assemblies are uniformly arranged along the circumferential side of the motor.

[0018] In this scheme, the plurality of damping assemblies are uniformly arranged along the circumferential side of the motor, that is, a plurality of damping assemblies are uniformly arranged on the circumferential side of the motor, which improves the stability of the motor installation and the vibration isolation effect between the motor and the volute bottom plate.

[0019] Preferably, the damping washer comprises a flat plate portion and a stepped portion extending along the axial direction of the plunger inside the flat plate portion, the bottom of the flat plate portion abuts against the butterfly spring, and the circumferential side of the flat plate portion abuts against the radial limiting piece.

[0020] In this scheme, the damping washer is arranged as a flat plate portion and a stepped portion, the flat plate portion is used to abut against the butterfly spring to ensure the contact area of the damping washer and the butterfly spring, and the stepped portion is used to abut against the second flat washer, so that the force of the linear spring is transmitted to the stepped portion and then to the butterfly spring, or the force of the butterfly spring is transmitted to the stepped portion and then to the linear spring, which plays a certain buffering role.

[0021] Preferably, the linear spring is made of spring steel; the damping washer is made of corrosion-resistant elastic material; and the butterfly spring is made of low-carbon steel.

[0022] In the scheme, the linear spring is made of spring steel, the damping pad is made of corrosion-resistant elastic material, and the butterfly spring is made of low-carbon steel, so that the vibration damping assembly is not easy to age, has long service life, and achieves the effect of non-declining vibration damping.

[0023] The utility model also provides a range hood, it is characterized in be including the vibration damping mounting assembly as preceding described.

[0024] The positive progress effect of the utility model is: provide a kind of vibration damping mounting assembly of motor for range hood, motor is installed on volute bottom plate by vibration damping assembly, vibration damping assembly includes the linear spring of the outer side of the plunger, damping pad and butterfly spring, and linear spring and the butterfly spring interact, realize the parallel load bearing of linear spring and disc spring, not only improve the carrying capacity of vibration damping mounting assembly, so that vibration damping mounting assembly is strong, and stability is good, and the positive stiffness of linear spring and the negative stiffness of butterfly spring are offset, realize quasi-zero stiffness vibration isolation, broaden vibration isolation interval, improve low-frequency vibration isolation effect;Motor and volute bottom plate are connected respectively at the two ends of the plunger, so that motor and volute bottom plate are located respectively at the two ends of vibration damping assembly, realize the vibration damping connection between motor and volute bottom plate, improve the stability of range hood operation. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the structure diagram of vibration damping assembly of the utility model one embodiment.

[0026] Figure 2 It is the sectional view of vibration damping assembly of the utility model one embodiment.

[0027] Figure 3 It is the displacement and load relationship diagram of linear spring.

[0028] Figure 4 It is the displacement and load relationship diagram of butterfly spring.

[0029] Figure 5 It is the displacement and load relationship diagram of vibration damping assembly.

[0030] Figure 6 It is the structure diagram of first flat gasket of the utility model one embodiment.

[0031] Figure 7 It is the sectional view of first flat gasket of the utility model one embodiment.

[0032] Figure 8 It is the structure diagram of butterfly spring of the utility model one embodiment.

[0033] Figure 9 It is the sectional view of butterfly spring of the utility model one embodiment.

[0034] Figure 10 This is a schematic diagram of the structure of a damping pad according to an embodiment of the present invention.

[0035] Figure 11 This is a cross-sectional view of a damping pad according to an embodiment of the present invention.

[0036] Figure 12 This is a schematic diagram of the distribution structure of the vibration damping component on the motor according to an embodiment of the present invention.

[0037] Figure 13 This is a schematic diagram of the structure of a range hood according to an embodiment of the present invention.

[0038] Explanation of reference numerals in the attached figures

[0039] Vibration damping component 1

[0040] Piston 2

[0041] Linear Spring 3

[0042] Damping pad 4

[0043] Disc spring 5

[0044] Axial limiting component 6

[0045] Radial limiting component 7

[0046] First flat washer 8

[0047] Second flat washer 9

[0048] Thread section 10

[0049] Locking nut 11

[0050] Flat plate section 12

[0051] Step 13

[0052] Motor 14

[0053] 15 range hood Detailed Implementation

[0054] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0055] This utility model provides a vibration damping mounting assembly for a range hood motor, which includes a motor, a volute base plate, and a vibration damping assembly 1 connecting the motor and the volute base plate, such as... Figures 1-2As shown, the damping assembly 1 includes a plunger 2, a linear spring 3, a damping pad 4 and a butterfly spring 5, the linear spring 3, the damping pad 4 and the butterfly spring 5 are sequentially sleeved outside the plunger 2, the linear spring 3 interacts with the butterfly spring 5, and the motor 14 is connected with the volute bottom plate at two ends of the plunger 2 respectively. The motor 14 is installed on the volute bottom plate through the damping assembly 1, the linear spring 3 interacts with the butterfly spring 5, parallel load of the linear spring 3 and the disc spring is realized, not only the load capacity of the damping installation assembly is improved, so that the damping installation assembly has strong impact resistance and good stability, but also the positive stiffness of the linear spring 3 and the negative stiffness of the butterfly spring 5 are offset, quasi-zero stiffness vibration isolation is realized, the vibration isolation interval is widened, and the low-frequency vibration isolation effect is improved; the motor 14 and the volute bottom plate are connected at two ends of the plunger 2 respectively, so that the motor 14 and the volute bottom plate are located at two ends of the damping assembly 1 respectively, the damping connection between the motor 14 and the volute bottom plate is realized, and the stability of the whole machine operation of the range hood is improved.

[0056] In the embodiment, the linear spring 3 is a positive stiffness element, which is made of spring steel, and the stiffness coefficient k is greater than zero, the butterfly spring 5 is a negative stiffness element, which is made of low-carbon steel, and the stiffness coefficient k is less than zero, wherein Figure 3 is a displacement-load relationship diagram of the linear spring 3, Figure 4 is a displacement-load relationship diagram of the butterfly spring 5, Figure 5 is a displacement-load relationship diagram of the damping assembly 1. As Figure 5 shown, in the dynamic stiffness damping interval, the load coefficient of the damping assembly 1 of the utility model is equal to zero or tends to zero, the damping assembly 1 has good low-frequency damping effect, and in the static stiffness interval, the load coefficient is greater than zero, the damping assembly 1 has good impact resistance and stability. It should be noted that: the static stiffness interval, the time of external force is relatively long, and the system has enough time to reach a stable state; the dynamic stiffness interval, the test needs to be carried out under dynamic conditions, that is, the time of external force is relatively short, and the system is in a constantly changing vibration state.

[0057] As Figure 2As shown, the plunger 2 is further provided with an axial limiting member 6, which abuts against the butterfly spring 5 away from the damping pad 4; the plunger 2 is further provided with a radial limiting member 7, which is sleeved on the outer periphery of the butterfly spring 5 and abuts against the circumferential side of the butterfly spring 5; the axial limiting member 6 is fixedly arranged on the plunger 2 and abuts against the butterfly spring 5 away from the damping pad 4, which not only achieves the axial limiting of the butterfly spring 5 along the plunger 2 to prevent the butterfly spring 5 from sliding away from the damping pad 4, but also isolates the direct contact between the butterfly spring 5 and the motor 14 or the volute bottom plate to reduce the vibration transmission between the motor 14 and the volute bottom plate; the radial limiting member 7 is arranged on the plunger 2 and sleeved on the outer periphery of the butterfly spring 5 and abuts against the circumferential side of the butterfly spring 5, so that the radial limiting member 7 limits the butterfly spring 5 on the circumferential side of the butterfly spring 5, and the acting force of the butterfly spring 5 can be along the axial direction of the plunger 2 to prevent deflection.

[0058] As shown in Figures 8-9 The profile of the butterfly spring 5 is annular, which passes through the plunger 2 and has an included angle with the horizontal plane, and the included angle ranges from 6° to 10°.

[0059] As shown in Figure 2 The axial limiting member 6 and the radial limiting member 7 are located on the axial limiting member 6 and form a cylindrical member with the axial limiting member 6, and the cylindrical member forms an annular accommodating cavity with the plunger 2. The radial limiting member 7 is located on the axial limiting member 6 and forms a cylindrical member with the axial limiting member 6, that is, the axial limiting member 6 and the radial limiting member 7 are integrally formed and form a cylindrical member, and the cylindrical member forms an annular accommodating cavity with the plunger 2 for placing the damping pad 4 and the butterfly spring 5 and axially and radially limiting the butterfly spring 5 and the damping pad 4. The plunger 2 and the cylindrical member thereon are made of carbon steel with good strength. In the embodiment, the axial limiting member 6 and the radial limiting member 7 are an integral part, which are integrally formed with the plunger 2.

[0060] Of course, in other embodiments, the axial limiting member 6 and the radial limiting member 7 can be separately arranged, as long as they can axially and radially limit the butterfly spring 5 and the damping pad 4.

[0061] As shown in Figure 2As shown, the linear spring 3 is provided with a first flat washer 8 at one end away from the butterfly spring 5; the linear spring 3 is provided with a second flat washer 9 at one end close to the butterfly spring 5, the second flat washer 9 abuts against the damping pad 4, and the second flat washer 9 is the same as the first flat washer 8. The linear spring 3 is provided with the first flat washer 8 at one end away from the butterfly spring 5, the first flat washer 8 is sleeved on the plunger 2, the first flat washer 8 supports the one end of the linear spring 3 away from the butterfly spring 5, and forms a flat support surface, so that the force of the linear spring 3 can be along the axial direction of the plunger 2 or parallel to the plunger 2, and the linear spring 3 is also prevented from directly contacting the motor 14 or the volute bottom plate on the other side of the first flat washer 8; the linear spring 3 is also provided with the second flat washer 9 at one end close to the butterfly spring 5, the second flat washer 9 is sleeved on the plunger 2, so that the second flat washer 9 and the first flat washer 8 provide flat surfaces for the linear spring 3 at both ends, and the force transmission process of the linear spring 3 can be along the axial direction of the plunger 2. Figures 6-7 As shown, the first flat washer 8 and the second flat washer 9 are annular flat plates, which are sleeved on the plunger 2, and the first flat washer 8 and the second flat washer 9 are made of materials with certain strength and rigidity, such as carbon steel, so that the first flat washer 8 and the second flat washer 9 have certain rigidity and strength.

[0062] As shown, Figures 1-2 As shown, the plunger 2 is provided with a threaded section 10 at both ends, and a lock nut 11 is matched on the threaded section 10, the plunger 2 is provided with a threaded section 10 at both ends, and a lock nut 11 is matched on the threaded section 10, so that the motor 14 and the volute bottom plate are locked at both ends of the plunger 2 and the linear spring 3 and the butterfly spring 5 are kept between the motor 14 and the volute bottom plate to reduce the vibration transmission between the motor 14 and the volute bottom plate. Figure 1 and Figure 2 Only one lock nut 11 matched on one threaded section 10 is shown in the figure, and the lock nut 11 matched on the other threaded section 10 is not shown.

[0063] Figure 12 As shown, the motor 14 is uniformly provided with four vibration reduction assemblies 1 around the circumference, the four vibration reduction assemblies 1 connect the motor 14 and the volute bottom plate, thereby improving the vibration isolation effect between the motor 14 and the volute bottom plate. Of course, in other embodiments, the vibration reduction assemblies 1 are multiple, and the multiple vibration reduction assemblies 1 are uniformly arranged along the circumferential side of the motor 14, that is, multiple vibration reduction assemblies 1 are uniformly arranged on the circumferential side of the motor 14, thereby improving the stability of the motor 14 installation and the vibration isolation effect between the motor 14 and the volute bottom plate.

[0064] As shown, Figures 10-11As shown, the damping pad 4 includes a flat plate part 12 and a stepped part 13 extending axially inside the flat plate part 12 along the plunger 2, the bottom of the flat plate part 12 abuts against the butterfly spring 5, and the circumferential side of the flat plate part 12 abuts against the radial limiting part 7. The damping pad 4 is provided with the structure including the flat plate part 12 and the stepped part 13, the flat plate part 12 is used to abut against the butterfly spring 5 to ensure the contact area of the damping pad 4 and the butterfly spring 5, and the stepped part 13 is used to abut against the second flat washer 9, the force of the linear spring 3 is first transmitted to the stepped part 13 and then to the butterfly spring 5 or the force of the butterfly spring 5 is transmitted to the stepped part 13 and then to the linear spring 3, thereby playing a certain buffering role. The damping pad 4 is made of a corrosion-resistant elastic material, such as an elastic alloy.

[0065] In the present scheme, the linear spring 3 is made of spring steel, the damping pad 4 is made of a corrosion-resistant elastic material, and the butterfly spring 5 is made of low-carbon steel, so that the vibration damping assembly 1 is not easy to age, has a long service life, and achieves the effect of not attenuating the damping effect.

[0066] In order to facilitate the assembly of the vibration damping assembly 1, the present embodiment provides specific size designs of the components of the vibration damping assembly 1, the height of the plunger 2 from the bottom of the radial limiting part 7 to the threaded section 10 away from the end of the radial limiting part 7 is 17 mm, the diameter of the plunger 2 ranges from 5.8 mm to 6.2 mm, and the inner diameter of the cylindrical part ranges from 15 mm to 17 mm; the height of the linear spring 3 ranges from 8 mm to 9 mm, the outer diameter of the linear spring 3 ranges from 11.5 mm to 12.5 mm, the inner diameter of the linear spring 3 is 11.8 mm-13.3 mm, the height of the first flat washer 8 and the second flat washer 9 ranges from 0.4 mm to 0.5 mm, and the outer diameter of the first flat washer 8 and the second flat washer 9 exceeds the outer diameter of the linear spring 3 by 0.2 mm-0.4 mm; the total height of the flat plate part 12 and the stepped part 13 of the damping pad 4 ranges from 0.4 mm to 0.5 mm; and the outer diameter of the flat plate part 12 of the damping pad 4 is equal to the outer diameter of the first flat washer 8. Although the sizes of the components of the vibration damping assembly 1 are designed in the present embodiment, the sizes of the components of the vibration damping assembly can be adjusted in combination with the actual space and needs in other embodiments.

[0067] As shown in the accompanying drawings, Figure 13 The utility model also provides a kind of range hood 15, it is characterized by, it includes the vibration damping installation assembly of preceding description.

[0068] Although the specific embodiments of the present application are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, and such changes and modifications fall within the protection scope of the present application.

Claims

1. A vibration-damping mounting assembly for a motor of a range hood, characterized by, It includes a motor, a volute bottom plate and a damping assembly connecting the motor and the volute bottom plate, the damping assembly includes a plunger, a linear spring, a damping pad and a butterfly spring, the linear spring, the damping pad and the butterfly spring are sequentially sleeved outside the plunger, the linear spring interacts with the butterfly spring, and the motor and the volute bottom plate are connected at two ends of the plunger respectively.

2. The vibration damping mounting assembly of claim 1, wherein An axial limiting piece is further arranged on the plunger and abuts against one side of the butterfly spring away from the damping pad.

3. The vibration damping mounting assembly according to claim 2, wherein A radial limiting piece is further arranged on the plunger and is sleeved outside the periphery of the butterfly spring and abuts against the periphery of the butterfly spring.

4. The vibration damping mounting assembly of claim 3, wherein The axial limiting piece and the radial limiting piece form a cylindrical piece on the axial limiting piece and form an annular accommodating cavity with the plunger.

5. The vibration damping mounting assembly according to claim 4, characterized in that One end of the linear spring away from the butterfly spring is provided with a first flat washer. And / or, one end of the linear spring close to the butterfly spring is provided with a second flat washer, and the second flat washer abuts against the damping pad.

6. The vibration damping mounting assembly according to claim 5, characterized in that Threaded segments are arranged at two ends of the plunger respectively, and lock nuts are arranged on the threaded segments in a matched mode.

7. The vibration damping mounting assembly according to claim 6, characterized in that The damping assembly is multiple, and multiple damping assemblies are uniformly arranged along the periphery of the motor.

8. The vibration damping mounting assembly according to claim 7, characterized in that The damping pad includes a flat plate portion and a stepped portion extending axially along the plunger inside the flat plate portion, the bottom of the flat plate portion abuts against the butterfly spring, and the periphery of the flat plate portion abuts against the radial limiting piece.

9. The vibration damping mounting assembly of claim 1, wherein The linear spring is made of spring steel; the damping pad is made of corrosion-resistant elastic material; and the butterfly spring is made of low-carbon steel.

10. A range hood characterized by It includes the damping mounting assembly according to any one of claims 1-9.

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