CN102213292B - Vibration attenuation and noise reduction pad and motor installation structure of range hood - Google Patents
Vibration attenuation and noise reduction pad and motor installation structure of range hood Download PDFInfo
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- CN102213292B CN102213292B CN201110149966.8A CN201110149966A CN102213292B CN 102213292 B CN102213292 B CN 102213292B CN 201110149966 A CN201110149966 A CN 201110149966A CN 102213292 B CN102213292 B CN 102213292B
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Abstract
The invention relates to a vibration attenuation and noise reduction pad. The vibration attenuation and noise reduction pad comprises a columnar body (1); an axially perforative through hole (3) through which an installation screw (2) passes is formed in the body; an annular groove (4) is formed on the peripheral surface of the middle part of the body (1); the vibration attenuation and noise reduction pad is characterized in that: a plurality of radial gaps (5) are formed on at least one of the upper end face and the lower end face of the body (1) at intervals along the circumference; each radial gap (5) radially perforates through the circumferential wall of the body (1); the radial gaps divide the contact surface into a plurality of small elastic units, so the contact area between the body 1 and a connected body is reduced; when the body (1) is screwed and squeezed by the screw, a connecting force is dispersed to each independent elastic unit; at the moment, the vibration produced by a connected component can be stopped and absorbed by the elastic units, so the vibration energy transmitted to a thin plate shell is effectively reduced; and particularly, when the vibration attenuation and noise reduction pad is applied to a system in the class of fans, aims of reducing vibration and attenuating noise can be fulfilled effectively.
Description
Technical field
The present invention relates to a kind of vibration damping silencing pad and there is the electric motor mounting structure of the kitchen ventilator of this vibration damping silencing pad.
Background technique
Take oil-fume exhauster product as application examples, and cooking-fume exhauster blower system is mainly spiral case, motor, the large parts of impeller three, to consist of, and generally, motor is to be directly fixed on spiral case by screw.But because spiral case is made by sheet member under normal conditions, motor, when impeller runs up, can produce vibration.While causing machine run, noise increases, and when serious, because unstability is shaken, and the height of noise is an important indicator weighing kitchen ventilator quality.Therefore for reaching effectiveness in vibration suppression, conventionally all can between motor and the spiral case being connected with motor electric machine support, by increasing the mode of rubber like pad, spring pad, realize.If a patent No. is that Chinese utility model patent < < damping washer of ZL201020595359.5 (notification number is CN201839128U) and the motor > > of application thereof have just disclosed a kind of vibration damping (shake) pad, and use the electric motor mounting structure of this beam.The effectiveness in vibration suppression of existing damping pad is poor, and installs inconvenient.
In addition, production in dairy products, in using process, we also find, fluctuation when the supply voltage due to access, in power supply, clutter composition is many, power supply purifies not, indivedual motors in indivedual batches or same batch, in operation process after assembling, also can produce a kind of abnormal sound, this abnormal sound in certain frequency as the decibel value of 100～700Hz surpass 2～3 times of other frequency decibel values, we think, may be due to induction alternating current (AC) motor this in making process due to technological fluctuation, during running, produce inhomogeneous magnetic pull, and generation electromagnetic sound, because centrifugal blower fan system itself is a resonant cavity, this electromagnetic sound can be exaggerated in the process along with air pressure expansion, and match with the resonant frequency of body, and send continuous, the abnormal sound relevant to body resonant frequency.This sound is because frequency is mostly at medium and low frequency, and acoustic transparency is strong, so human feeling is very uncomfortable, administers also relatively difficulty.
Although existing damping pad can play damping effect, but the electromagnetic sound that can not produce motor is carried out noise reduction, and attempt by electric capacity, inductor filter circuit with the scheme of improving power quality because volume is large, cost is high, application on the household appliances of similar range hood is also very restricted, and being limited in scope of administering.
Summary of the invention
First technical problem to be solved by this invention is that the vibration damping silencing pad of a kind of effectively vibration damping and noise reduction is provided for above-mentioned prior art present situation.
The present invention solves the problems of the technologies described above adopted technological scheme: a kind of vibration damping silencing pad, include the body that is column, in body, have the through hole running through vertically passing for mounting screw, on the side face at the middle part of body, have annular groove, it is characterized in that: on the upper-end surface of described body and at least one end face in lower end surface, along the circle spacing, be provided with a plurality of radial indentation, each radial indentation radially runs through the perisporium of body.
As preferably, on the upper-end surface of above-mentioned body and lower end surface, take and be provided with described radial indentation as good.Because upper-end surface and the lower end surface of body is equipped with radial indentation, so the upper-end surface of body and the texturing face that lower end surface is indent, can increase the frictional force between bulk junction surface of contact, guarantee that body can circumferentially not rock, and the vibration transmission efficiency T of such vibration damping silencing pad is less, the better effects if of vibration damping.
Above-mentioned radial indentation inside contracts gradually in the direction at the middle part along end face towards body, and the degree of depth of radial indentation deepens from the inside to the outside gradually.Through the resemblance of this radial indentation of evidence, at the body that guarantees vibration damping silencing pad, have under the prerequisite of upper and lower deformability more suitably, can not affect again the bulk strength of body.According to different vibration damping requirements, the degree of depth of radial indentation and profile can design as required.
The edge at the upper end open of above-mentioned through hole and lower ending opening place is equipped with chamfering.When screw screws, after vibration damping silencing pad generation resiliently deformable, meeting radially produces space with the spacing body outside screw, can not affect the reliability that screw connects, and can reduce again the transmission of vibration like this.
On the end face of the above-mentioned body that is provided with radial indentation, be also provided with circumferential breach, two-part before and after this circumferential breach is radially separated into described radial indentation.Equally, circumferential breach is set and can makes the top of body or bottom there is applicable circumferential deformation ability, therefore can make vibration damping silencing pad can more fully absorb the vibration of motor, effectively reduce noise.
Compared with prior art, the advantage of this vibration silencer pad is: it is provided with a plurality of radial indentation along the circle spacing on the upper-end surface of body and at least one end face in lower end surface, each radial indentation radially runs through the perisporium of body, therefore at least one end face of body forms the texturing face of indent, increase vibration silencer pad and the frictional force that is mounted parts, prevent the circumferential slippage of vibration silencer pad and reduce effectiveness in vibration suppression; Radial indentation makes contact surface be divided into some little " Flexible elements " in addition, can reduce the area of contact between body and connected body, when body is subject to screwing after extruding of screw, connection power is dispersed to each independently " Flexible element ", when driven by motor load is rotated, vibration can be stopped, absorb by these " Flexible elements ", effectively reduced the transmission of vibrational energy to thin sheet casing, particularly be applied to the system of this class of blower fan, can effectively reach the effect that reduces vibration, attenuates sound amplification; The body that radial indentation is set is in addition having under the prerequisite of suitable deformability up and down, can not affect again the bulk strength of body, guarantee that vibration damping silencing pad has the lower natural frequency of vibration and enough dampings, through evidence, the hardness of this vibration damping silencing pad is moderate, the abnormal sound that the noise producing because of motor oscillating and electromagnetic sound produce can effectively be decayed after by this vibration silencer pad, can and not worsen with the stack of hull vibration frequency.
Second technical problem to be solved by this invention is to improve a kind of electric motor mounting structure with the kitchen ventilator of aforementioned vibration damping silencing pad, this mounting structure effectively reduces kitchen ventilator because of the noise of motor oscillating generation and the abnormal sound of electromagnetic sound generation, can conveniently vibration damping silencing pad be installed on motor in addition.
A kind of electric motor mounting structure with the kitchen ventilator of aforementioned vibration damping silencing pad, include motor, motor is arranged on by screw on the mounting bracket of spiral case of kitchen ventilator, it is characterized in that: the flange plate marginating compartment of described motor is provided with at least three draw-in grooves that take the shape of the letter U, the body of described vibration damping silencing pad is fastened in described each draw-in groove by the annular groove on it, and described screw is threaded with described mounting bracket after passing the through hole on described body.
Above-mentioned screw is comprised of head, polished rod portion and thread rod part from top to bottom, the length of described polished rod portion is equal to or less than the axial length of described body, profile and the through hole of polished rod portion match, and described body is set in polished rod portion, and the thread rod part of described screw is threaded with mounting bracket.Vibration damping silencing pad is set in polished rod portion, and simultaneously the length of polished rod portion is equal to or less than the axial length of described body, can guarantee like this effect of vibration damping silencing pad performance vibration damping, noise reduction, can guarantee again the pretightening force that is connected of screw and motor.
On the thread rod part of above-mentioned screw, be arranged with the stop collar that is fixed with smooth outer surface, the outer surface of this stop collar forms described polished rod portion.This structure is convenient to mold polished rod portion, and it need just form polished rod portion at the sheathed fixedly stop collar in upper end of the thread rod part of screw, is convenient to manufacture assembling, certainly also can adopt the bolt structure with polished rod portion, is that this bolt structure cost is relatively high.
Between the upper-end surface of the body of the head of above-mentioned screw and vibration damping silencing pad, be provided with plain washer, the extruding force that the upper-end surface that plain washer vibration damping silencing pad is set is subject to screw head is more steady, further guarantees the effect of vibration damping silencing pad performance vibration damping, noise reduction; The diameter of plain washer is less than the external diameter of body, and after screw screws, plain cushion only acts on the part of texturing face in the power of vibration damping silencing pad, can reduce as much as possible the transmission of vibration.
The head of above-mentioned plain washer and the screw integrative-structure that is welded.According to technique, screw head and plain cushion can be made as to one, packaging technology is more simple.
Compared with prior art, the invention has the advantages that: the motor of kitchen ventilator is lived the blocking of vibration damping silencing pad by least three draw-in grooves, vibration damping silencing pad is fixed by screws on the mounting bracket of kitchen ventilator in addition, can guarantee that vibration damping silencing pad has the lower natural frequency of vibration and enough dampings.Motor oscillating and electromagnetic sound effectively decay after by this mounting structure, can not worsen with the casing vibration frequency stack of kitchen ventilator, generally by vibration transmissibility T, weigh and subtract vibrating effect, vibration transmissibility T represents to act in total perturbed force of device has how many shares to pass to supporting structure or basis through vibration reducing members, T is less for vibration transmission efficiency, and the effect of vibration damping should be better.According to vibration principle, under certain conditions, vibration transmissibility T=1/[(f/f0) 2-1], wherein: the vibration frequency that F is vibration source; F0 is the natural frequency of elastic damping system, when f/f0 > 21/2, vibration damping is effective, if the polished rod portion of attachment screw is too short, pad diameter is excessive and vibration damping silencing pad much higher hard all can make f0 increase, thereby T is increased, the vibration damping noise reduction ability of such electric motor mounting structure is poor, by the design of this mounting structure radial indentation, greatly reduces the T value of vibration damping silencing pad.
Accompanying drawing explanation
Fig. 1 is vibration damping silencing pad embodiment's perspective view;
Fig. 2 is vibration damping silencing pad embodiment's front schematic view;
Fig. 3 is vibration damping silencing pad embodiment's plan view;
Fig. 4 is that the A-A of Fig. 3 is to sectional view;
Fig. 5 is that the B-B of Fig. 3 is to sectional view;
Fig. 6 is the electric motor mounting structure embodiment's of kitchen ventilator partial sectional view;
Fig. 7 is the C place enlarged view of Fig. 6;
Fig. 8 is the D place enlarged view of Fig. 6;
Fig. 9 is the structural representation of spiral case in the electric motor mounting structure embodiment of kitchen ventilator;
Figure 10 is the structural representation of motor in the electric motor mounting structure embodiment of kitchen ventilator;
Figure 11 is the structural representation of screw in the electric motor mounting structure embodiment of kitchen ventilator;
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
As shown in Fig. 1～5, it is the structural representation of vibration damping silencing pad of the present invention.
A vibration damping silencing pad, includes the body 1 that is column, has the through hole running through vertically 3 passing for mounting screw 2 in body 1, and the upper end open of through hole 3 and edge, lower ending opening place are equipped with chamfering, have annular groove 4 on the side face at the middle part of body 1.
In the upper-end surface of body 1 and lower end surface, above along the circle spacing, be provided with a plurality of radial indentation 5, each radial indentation 5 radially runs through the perisporium of body 1.Radial indentation 5 is inside contracting in the direction at body 1 middle part gradually along end face.The profile that is radial indentation 5 is the shape of falling isoceles triangle, and the degree of depth of radial indentation 5 deepens from the inside to the outside gradually.
On the upper-end surface of body 1 and lower end surface, be also provided with circumferential breach 6, two-part before and after this circumferential breach 6 is radially separated into radial indentation 5.Circumferentially the cross section of breach 6 is the shape of falling isoceles triangle.
This vibration damping silencing pad is provided with a plurality of radial indentation 5 along the circle spacing on the upper-end surface of body and at least one end face in lower end surface, each radial indentation 5 radially runs through the perisporium of body, therefore the upper-end surface of body 1 and lower end surface form the texturing face of indent, increase vibration silencer pad and the frictional force that is mounted parts, prevent the circumferential slippage of vibration silencer pad and reduce effectiveness in vibration suppression; Radial indentation makes contact surface be divided into some little " Flexible elements " in addition, can reduce the area of contact between body 1 and connected body, when body 1 is subject to screwing after extruding of screw, connection power is dispersed to each independently " Flexible element ", at this moment the vibration that connected component produces will be stopped, absorb by these " Flexible element ", effectively reduced the transmission of vibrational energy to thin sheet casing, particularly be applied to the system of this class of blower fan, can effectively reach the effect that reduces vibration, attenuates sound amplification; The body 1 that radial indentation is set is in addition having under the prerequisite of suitable deformability up and down, can not affect again the bulk strength of body 1, guarantee that vibration damping silencing pad has the lower natural frequency of vibration and enough dampings, through evidence, the hardness of this vibration damping silencing pad is moderate, the abnormal sound that the noise producing because of motor oscillating and electromagnetic sound produce can effectively be decayed after by this vibration silencer pad, can and not worsen with the stack of hull vibration frequency.
As shown in Fig. 6～11, for thering is the embodiment of electric motor mounting structure of the kitchen ventilator of aforementioned vibration damping silencing pad.
An electric motor mounting structure for tool kitchen ventilator, includes motor 7, and motor 7 is arranged on by screw 2 on the mounting bracket 9 of spiral case 8 of kitchen ventilator.The flange plate marginating compartment of motor 7 is provided with at least three draw-in grooves that take the shape of the letter U 71, and the body 1 of vibration damping silencing pad is fastened in each draw-in groove 71 by the annular groove 4 on it, and screw 2 is threaded with mounting bracket 9 through the through hole 3 on body is rear.
Between the upper-end surface of the head 21 of screw and the body 1 of vibration damping silencing pad, be provided with plain washer 10, the diameter of this plain washer 10 is less than the external diameter of body 1.The head 21 of plain washer 10 and the screw integrative-structure that is welded.
The motor of kitchen ventilator is lived the blocking of vibration damping silencing pad by least three draw-in grooves, and vibration damping silencing pad is fixed by screws on the mounting bracket of kitchen ventilator in addition, can guarantee that vibration damping silencing pad has the lower natural frequency of vibration and enough dampings.Motor oscillating and electromagnetic sound effectively decay after by this mounting structure, can not worsen with the casing vibration frequency stack of kitchen ventilator, generally by vibration transmissibility T, weigh and subtract vibrating effect, vibration transmissibility T represents to act in total perturbed force of device has how many shares to pass to supporting structure or basis through vibration reducing members, T is less for vibration transmission efficiency, and the effect of vibration damping should be better.According to vibration principle, under certain conditions, vibration transmissibility T=1/[(f/f0) 2-1], wherein: the vibration frequency that F is vibration source; F0 is the natural frequency of elastic damping system, when f/f0 > 21/2, vibration damping is effective, if the polished rod portion of attachment screw is too short, pad diameter is excessive and vibration damping silencing pad much higher hard all can make f0 increase, thereby T is increased, the vibration damping noise reduction ability of such electric motor mounting structure is poor, by the design of this mounting structure radial indentation, greatly reduces the T value of vibration damping silencing pad.
Claims (7)
1. a vibration damping silencing pad, include the body (1) that is column, in body (1), have the through hole running through vertically (3) passing for mounting screw (2), on the side face at the middle part of body (1), have annular groove (4), it is characterized in that: on the upper-end surface of described body (1) and lower end surface, all along the circle spacing, be provided with a plurality of radial indentation (5), each radial indentation (5) radially runs through the perisporium of body (1); On the end face of the described body (1) that is provided with radial indentation (5), be also provided with circumferential breach (6), two-part before and after this circumferential breach (6) is radially separated into described radial indentation (5).
2. vibration damping silencing pad according to claim 1, is characterized in that: described radial indentation (5) inside contracts gradually in the direction at (1) middle part along end face towards body, and the degree of depth of radial indentation (5) deepens from the inside to the outside gradually.
3. vibration damping silencing pad according to claim 1, is characterized in that: the upper end open of described through hole (3) and the edge at lower ending opening place are equipped with chamfering.
4. one kind has as claim 1, the electric motor mounting structure of the kitchen ventilator of vibration damping silencing pad described in 2 or 3, include motor (7), motor (7) is arranged on by screw (2) on the mounting bracket (9) of spiral case (8) of kitchen ventilator, it is characterized in that: the flange plate marginating compartment of described motor (7) is provided with at least three draw-in grooves that take the shape of the letter U (71), the body of described vibration damping silencing pad (1) is fastened in described each draw-in groove (71) by the annular groove on it (4), described screw (2) is threaded with described mounting bracket (9) through the through hole (3) on described body is rear, screw (2) is comprised of head (21), polished rod portion (22) and thread rod part (23) from top to bottom, the length of described polished rod portion (22) is equal to or less than the axial length of described body (1), the profile of polished rod portion (22) and through hole (3) match, it is upper that described body (1) is set in polished rod portion (22), and the thread rod part (23) of described screw (2) is threaded with mounting bracket (9).
5. the electric motor mounting structure of kitchen ventilator according to claim 4, it is characterized in that: on the thread rod part (23) of described screw (2), be arranged with the stop collar that is fixed with smooth outer surface, the outer surface of this stop collar forms described polished rod portion (22).
6. the electric motor mounting structure of kitchen ventilator according to claim 4, it is characterized in that: between the upper-end surface of the body (1) of the head of described screw (21) and vibration damping silencing pad, be provided with plain washer (10), the diameter of this plain washer (10) is less than the external diameter of body (1).
7. the electric motor mounting structure of kitchen ventilator according to claim 6, is characterized in that: the head (21) of described plain washer (10) and the screw integrative-structure that is welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110149966.8A CN102213292B (en) | 2011-06-02 | 2011-06-02 | Vibration attenuation and noise reduction pad and motor installation structure of range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110149966.8A CN102213292B (en) | 2011-06-02 | 2011-06-02 | Vibration attenuation and noise reduction pad and motor installation structure of range hood |
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| Publication Number | Publication Date |
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| CN102213292A CN102213292A (en) | 2011-10-12 |
| CN102213292B true CN102213292B (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110149966.8A Active CN102213292B (en) | 2011-06-02 | 2011-06-02 | Vibration attenuation and noise reduction pad and motor installation structure of range hood |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305690B (en) * | 2015-11-23 | 2018-08-07 | 珠海格力电器股份有限公司 | Motor damping mounting structure and have its lampblack absorber |
| CN108011469B (en) * | 2017-06-06 | 2024-02-20 | 宁波方太厨具有限公司 | Limiting shock-absorbing gasket and range hood using same |
| CN109004788B (en) * | 2017-06-07 | 2024-08-27 | 佛山市顺德区美的电热电器制造有限公司 | Motor vibration damping pad, base assembly and cooking machine |
| CN111664085A (en) * | 2020-05-22 | 2020-09-15 | 上海大陆汽车制动系统销售有限公司 | Vibration reduction mechanism of motor pump |
| CN115324223B (en) * | 2022-08-19 | 2023-05-02 | 深圳供电局有限公司 | Vibration isolation device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4505462A (en) * | 1981-10-09 | 1985-03-19 | Bridgestone Tire Company Limited | Elastomeric shock and vibration isolator |
| CN2886202Y (en) * | 2006-02-28 | 2007-04-04 | 江苏常发实业集团有限公司 | Universal damping pad of digital power generation set |
| CN202100657U (en) * | 2011-06-02 | 2012-01-04 | 宁波方太厨具有限公司 | Vibration-damping silencing pad and motor installation structure for range hood |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2733068Y (en) * | 2004-07-06 | 2005-10-12 | 吴来文 | Silencing washer for die holder pull rod |
| CN1920327A (en) * | 2005-08-22 | 2007-02-28 | 乐金电子(天津)电器有限公司 | Motor pad structure of air-conditioner |
| CN2903560Y (en) * | 2006-01-18 | 2007-05-23 | 深圳市中蒲实业有限公司 | Vibration damper and lamp-socket of using same |
| EP1898121A1 (en) * | 2006-09-08 | 2008-03-12 | Universite Libre De Bruxelles | Passive dynamic vibration absorber |
-
2011
- 2011-06-02 CN CN201110149966.8A patent/CN102213292B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4505462A (en) * | 1981-10-09 | 1985-03-19 | Bridgestone Tire Company Limited | Elastomeric shock and vibration isolator |
| CN2886202Y (en) * | 2006-02-28 | 2007-04-04 | 江苏常发实业集团有限公司 | Universal damping pad of digital power generation set |
| CN202100657U (en) * | 2011-06-02 | 2012-01-04 | 宁波方太厨具有限公司 | Vibration-damping silencing pad and motor installation structure for range hood |
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| CN102213292A (en) | 2011-10-12 |
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