CN112065689A - Vibration damping device, compressor, and electric appliance - Google Patents
Vibration damping device, compressor, and electric appliance Download PDFInfo
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- CN112065689A CN112065689A CN202010905684.5A CN202010905684A CN112065689A CN 112065689 A CN112065689 A CN 112065689A CN 202010905684 A CN202010905684 A CN 202010905684A CN 112065689 A CN112065689 A CN 112065689A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0044—Pulsation and noise damping means with vibration damping supports
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Abstract
The application provides a vibration damping device, a compressor and an electric appliance, wherein the vibration damping device comprises an elastic main body, a first connecting end and a second connecting end, and load is transmitted between the first connecting end and the second connecting end through the elastic main body; the elastic main body is internally provided with at least two air chambers, and each air chamber is positioned between the first connecting end and the second connecting end. Compare traditional callus on the sole vibration damper, have the isolation of better vibration and noise, can bear axial load, also can bear radial load and moment of torsion, adapt to the multiple load needs of compressor, have the damping frequency band of broad, fine improvement low frequency vibration isolation effect, it is bigger to inverter compressor meaning.
Description
Technical Field
The application relates to a compressor technology, in particular to a vibration damper, a compressor and an electric appliance.
Background
In the prior art, in order to reduce noise and vibration, a compressor foot pad is generally provided with a vibration damper, and the basic principle is that a rubber vibration damping sleeve is sleeved outside a bolt fixed on a base plate, and the compressor foot pad is pressed and fixed on the top end of the rubber vibration damping sleeve. However, the damping device in the prior art generally has the following defects:
generally there will be the clearance between callus on the sole and the bolt, at installation, transportation and compressor operation in-process, on the callus on the sole inner wall pushes up the bolt very easily, lead to the damping inefficacy, the vibration of compressor will be through the bolt direct transmission to the chassis on, cause the shell vibration, produce unusual noise.
The vibration isolation effect under the low frequency in the rubber foot pad is not good, and for the frequency converter, when the compressor is operated at low frequency, the vibration reduction effect can not be played, and the problem that the pipeline operation stress exceeds the standard is easily caused.
Disclosure of Invention
In order to solve the technical problem that a vibration damping device in the prior art is unstable, the application provides a vibration damping device, a compressor and an electric appliance.
In a first aspect, the present application provides a vibration damping device, including an elastic main body, a first connection end, and a second connection end, where a load is transmitted between the first connection end and the second connection end through the elastic main body; the elastic main body is internally provided with at least two air chambers, and each air chamber is positioned between the first connecting end and the second connecting end.
In one embodiment of the present application, the resilient body includes a first air chamber and a second air chamber separated by a central support.
In an embodiment of the application, the central bracket further has a supporting member, and two ends of the supporting member respectively extend towards the first connecting end and the second connecting end.
In an embodiment of the present application, the center support further has at least one throttle hole, and two ends of the throttle hole are respectively communicated with the first air chamber and the second air chamber.
In an embodiment of the present application, the central support further has a prestressed waist ring for tightening the elastic body from outside to inside.
In an embodiment of the application, the central support is composed of two panels which are perpendicular to each other in the horizontal direction and the vertical direction, the whole body is of a cross structure, and the throttle holes are formed in the horizontal panels.
In an embodiment of the present application, the central support is made of a rigid material, and the central support is integrally formed in the elastic main body.
In one embodiment of the present application, the natural frequency of the damping device is less than 1/3 of the minimum excitation frequency of the load.
In one embodiment of the present application, the damping device has a stiffness of
ωnW is the natural frequency of the vibration damping device, W is the load weight, and N is the number of vibration damping devices.
In an embodiment of the present application, the pressure-bearing area a and the volume V of the air chamber of the damping device are represented by the formula W ═ NP0A and
determining; w is the weight of the load, P0-the working pressure of the damping device; n is the number of the vibration damping devices; paAtmospheric pressure, taking Pa＝1kgf/cm2(ii) a c, taking 1 to 1.4 as the polytropic exponent.
In another aspect of the present application, it may also be considered to provide a compressor including a vibration damping device as described above to facilitate vibration damping fixation during operation of the compressor.
In another aspect of the present application, it may also be considered to provide an electrical appliance comprising a vibration damping device as described above, so as to reduce vibration damping and stable fixation of a compressor or the like in operation.
The vibration damping device that this application embodiment provided compares vibration damping device among the prior art, first link and pass through between the second link elastic body transmission load, first link and be formed with two at least air chambers between the second link, no longer dispose rigid piece and pass first link and second link, and carry out compound vibration isolation by two at least air chambers between two links, compare traditional callus on the sole vibration damping device, have the isolation of better vibration and noise, can bear axial load promptly, also can bear radial load and moment of torsion, adapt to the multiple load needs of compressor, have the damping frequency band of broad, fine improvement low frequency vibration isolation effect, it is bigger to inverter compressor meaning.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic sectional view showing a vibration damping device according to embodiment 1 of the present invention;
FIG. 2 is a schematic view of the structure of a center support in example 1 of the present invention;
fig. 3 is a schematic view of an assembly structure of a vibration damping device according to embodiment 1 of the present invention;
FIG. 4 is a schematic view of the structure of a base plate according to embodiment 1 of the present invention;
FIG. 5 is a schematic view of the outer structure of a vibration damping device according to embodiment 1 of the present invention;
FIG. 6 is a schematic sectional view showing a vibration damping device according to embodiment 2 of the present invention;
fig. 7 is a schematic perspective view of a vibration damping device according to embodiment 2 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to solve the following problems in the prior art: there is the clearance between compressor vibration damper's callus on the sole and the bolt, at installation, transportation and compressor operation in-process, on the callus on the sole inner wall pushed up the bolt very easily, lead to the damping inefficacy, the vibration of compressor will be through the bolt direct transmission to the chassis on, cause the shell vibration, produce unusual noise.
The inventor of the application finds that between the first connecting end and the second connecting end of connecting base and load, the optional load can be directly transmitted through the elastic main body, at least two air chambers can be formed between the first connecting end and the second connecting end, no longer dispose the rigidity piece and run through at least two air chambers and be connected with first connecting end and second connecting end, carry out compound vibration isolation by at least two air chambers between two connecting ends, compare traditional callus on the sole vibration damper, have better vibration and noise isolation, can bear axial load, also can bear radial load and moment of torsion, adapt to the multiple load needs of compressor, have the damping frequency band of broad, fine improvement low frequency vibration isolation effect, it is bigger to inverter compressor meaning.
The embodiment of the application provides a vibration damping device which comprises an elastic main body, a first connecting end and a second connecting end, wherein load is transmitted between the first connecting end and the second connecting end through the elastic main body; the elastic main body is internally provided with at least two air chambers, and each air chamber is positioned between the first connecting end and the second connecting end.
The following is described in conjunction with the accompanying drawings:
fig. 1 is a schematic sectional structure view of a vibration damping device according to embodiment 1 of the present invention, fig. 2 is a schematic structural view of a center bracket according to embodiment 1 of the present invention, fig. 3 is a schematic structural view of an assembly structure of the vibration damping device according to embodiment 1 of the present invention, fig. 4 is a schematic structural view of a chassis according to embodiment 1 of the present invention, and fig. 5 is a schematic structural view of an outer shape of the vibration damping device according to embodiment 1 of the present invention.
In a first aspect, the present application provides a vibration damping device, which mainly includes an elastic main body 1, a first connection end 2, and a second connection end 3, wherein a load is transmitted between the first connection end 2 and the second connection end 3 through the elastic main body 1; the elastic body 1 is provided with at least two air chambers therein, and each air chamber is located between the first connecting end 2 and the second connecting end 3. No longer dispose the rigidity piece and pass first link and second link, carry out compound vibration isolation by two at least air chambers between two links, compare traditional callus on the sole vibration damper, have the isolation of better vibration and noise, can bear axial load, also can bear radial load and moment of torsion, adapt to the multiple load needs of compressor, have the damping frequency band of broad, fine improvement low frequency vibration isolation effect.
It is understood that the material of the elastic body 1 can be selected from rubber, silicon rubber or various industrial elastic materials with the same material characteristics, and is not limited.
In an embodiment of the present application, the elastic main body 1 may have a first air chamber 11 and a second air chamber 12 integrally formed therein, the first air chamber 11 and the second air chamber 12 may be arranged in parallel in the load transmission direction, the cross sections of the first air chamber 11 and the second air chamber 12 may be elliptical, and the outer sides of the first air chamber 11 and the second air chamber 12 may have an outer expanding arc-shaped wall, so as to provide an elastic support capable of stably returning, and have good damping and supporting effects. The first air chamber 11 and the second air chamber 12 may be separated by a central support 13. A central support 13 of a rigid part is coated in the middle of the elastic body so as to avoid the excessive deformation of the elastic body 1 in the axial direction, and meanwhile, the radial rigidity can be increased by utilizing the central support 13.
It will be appreciated that the first air chamber 11 or the second air chamber 12 may have a drum shape in profile, while the elastic body 1 is juxtaposed with two drum-shaped first air chambers 11 and second air chambers 12, and thus may have a gourd-shaped profile.
In an embodiment of the present application, the central bracket 13 further has a supporting member 14, and two ends of the supporting member 14 extend towards the first connecting end 2 and the second connecting end 3, respectively. The supporting piece 14 can be supported between the first connecting end 2 and the second connecting end 3 in an emergency, so that the condition that the air chamber is severely deformed due to large impact load in the falling and transportation processes can be prevented, the deformation of the vibration damping device is in a controllable range, and the overlarge pipeline stress is avoided.
In one embodiment of the present application, the center support 13 further has at least one throttle hole 15, and both ends of the throttle hole 15 are respectively communicated with the first air chamber 11 and the second air chamber 12. The orifice 15 may be selected to have a vent structure with a small diameter, or may be selected to be a vent valve with a predetermined vent amount so as to control the vent amount between the two air chambers.
When the air spring works, due to the supporting action of the central bracket 13 and the supporting piece 14, the second air chamber 12 is firstly supported by the central bracket 13 and the supporting piece 14, so that the volume of the second air chamber 12 can be kept basically stable, but the first air chamber 11 can absorb the vibration and the instantaneous pressure of the upper part to deform, the instantaneous internal high pressure is generated by the instantaneous pressure of the first air chamber 11, the air in the first air chamber 11 can flow to the second air chamber 12, after the one-side bias pressure is finished, the air can flow through the throttling hole 15 to return, and the energy loss can be generated when the air flows through the throttling hole 15, so that the damping is increased to improve the damping effect.
In one embodiment of the present application, a waist ring 16 is further provided to tighten the elastic body 1 from outside to inside corresponding to the central support 13. The horizontal panel of the central support 13 is given a certain pretightening force, so that the rigidity of the horizontal panel in the horizontal direction is improved, and the horizontal panel is prevented from bending and deforming due to air pressure change in an air chamber when the shock absorber works. The waist ring 16 provides support and protection for the outer wall root of the two air chambers on the outer side, so that the rigidity of the elastic body is improved, and the service life of the elastic body is prolonged. It will be appreciated that the stiffness of the air spring can be adjusted by selecting a different outer diameter and pre-stress parameter for the lumbar ring 16.
In one embodiment of the present application, the central bracket 13 is composed of two panels perpendicular to each other in the horizontal direction and the vertical direction, and the whole is in a cross structure, and the throttle hole 15 is disposed on the horizontal panel. The central support 13 may be made of a strong resin material, for example, so as to ensure the bonding strength between the central support and the rubber material of the elastic body 1, or may be made of a rigid material such as aluminum alloy or iron.
In an embodiment of the present application, the central support 13 is made of a rigid material, and the central support 13 is integrally formed in the elastic main body 1. It will be appreciated that the central support 13 may be embedded in the elastomeric body 1 using an over-molding or two-shot molding process.
As shown in fig. 3, the present invention can be considered to provide a rubber gourd type air spring damping device and an air conditioner using the same, the damping device is composed of a first connection end 2 for mounting a compressor, an elastic body 1, and a waist ring 16, the elastic body 1 is partially composed of a first air chamber 11, a second air chamber 12, and a center bracket 13 as shown in fig. 1, and the center bracket 13 is disposed between the first air chamber 11 and the second air chamber 12 for separating the two air chambers.
Further, as shown in fig. 2, the central bracket 13 is composed of two panels perpendicular to each other in the horizontal direction and the vertical direction, the whole is in a cross structure, the horizontal panel is provided with orifices 15, the orifices 15 are symmetrically and uniformly distributed on two sides of the vertical panel, the diameter range of the orifices 15 is 3-7 mm, when the air spring works, energy loss is generated when air in the first air chamber 11 and the second air chamber 12 flows through the orifices 15, and thus damping is increased to improve the damping effect; the upper end and the lower end of the vertical panel supporting piece 15 are away from the end faces of the first air chamber 11 and the second air chamber 12 by a certain distance, the range is controlled between 3 mm and 5mm, the arrangement can prevent the condition that the air chambers are severely deformed due to large impact load in the falling and transporting processes from occurring, so that the deformation of the vibration damper is in a controllable range, and the pipeline stress is prevented from being overlarge.
A waist ring 16 is arranged at the connecting part of the first air chamber 11 and the second air chamber 12 of the air spring, the waist ring 16 and a horizontal panel of the central support 13 are on the same plane, and a certain pretightening force is simultaneously given to the horizontal panel, so that the rigidity of the horizontal panel in the horizontal direction is improved, and the horizontal panel is prevented from bending and deforming due to the change of air pressure in the air chambers when the shock absorber works. As can be appreciated. The waist ring 16 may be selected from a steel cord material or a composite of rubber and steel cord, or a similar pre-stressed cord.
Further, in order to ensure the optimal damping effect of the air spring damping device, when designing, the stiffness k, the pressure bearing area a and the volume V of the air chamber of the air spring are calculated according to the following principles and formulas:
the natural frequency of the air spring is less than 1/3 of the excitation lower limit frequency,i.e. omeganOmega/3 or less; stiffness of air spring
The pressure bearing area A and the volume V of the air chamber are represented by the formula W ═ NP0A and
and (4) determining. In the formula: w is the weight of the compressor and its piping; p0-the working pressure of the air spring; n is the number of air springs; paAtmospheric pressure, taking Pa＝1kgf/cm2(ii) a c, taking 1 to 1.4 as the polytropic exponent.
Further, as shown in fig. 3, a specific embodiment of the vibration damping device includes a chassis 5, a vibration damping device, a waist ring 16, and a compressor foot 4, in which the first air spring connection end 2 is provided with a protrusion structure, the height of the protrusion structure is about 5 to 8mm, the protrusion is provided with a lead angle, the lead angle is 10 to 25 °, a mounting groove structure is provided between the protrusion structure and the air spring for fastening the compressor foot 4, and in addition, the radius of the upper end section of the protrusion structure should be smaller than the radius of the mounting hole of the compressor foot, so that the compressor foot slides into the mounting groove from the top end of the protrusion when being mounted;
further, as shown in fig. 4 and 5, in order to fix the air spring damping device on the chassis 5, a limiting boss 51 is arranged at a corresponding mounting position of the chassis 5, the centers of the three limiting bosses 51 are located on the same circle and are distributed at 120 degrees with each other, the height of the boss is 5-10 mm, for convenience of mounting, a guide angle is arranged at the upper part of the limiting boss 51, the angle of the guide angle is 5-12 degrees, a limiting hole is arranged at a corresponding position of a rubber entity at the bottom of the air spring, and the limiting hole is matched with the limiting boss during mounting, so that a limiting effect on the air spring is achieved.
Compared with a traditional foot pad vibration damping device, the gourd-shaped air spring vibration damping device has good vibration and noise isolation, can bear axial load and radial load and torque, is suitable for various load requirements of a compressor, has a wide vibration damping frequency band, well improves the low-frequency vibration isolation effect, and has a greater significance on a variable-frequency compressor.
Fig. 6 is a schematic sectional structure view of a vibration damping device according to embodiment 2 of the present invention, and fig. 7 is a schematic perspective structure view of the vibration damping device according to embodiment 2 of the present invention.
Another embodiment of the damping device of the present application is shown in fig. 6, the mounting sequence of the damping device is, from bottom to top, a lower nut 71 with a cushion, a chassis 5, a lower bolt 7, a waist ring 16, an upper bolt 6, a compressor foot 4 and an upper nut 61 with a cushion, the elastic body 1 is shown in fig. 6 and mainly comprises a first air chamber 11, a second air chamber 12 and a central bracket 13, and the central bracket 13 is disposed between the first air chamber 11 and the second air chamber 12 and is used for separating the two air chambers. It is understood that the material of the elastic body 1 can be selected from rubber, silicon rubber or various industrial elastic materials with the same material characteristics, and is not limited.
Further, as shown in fig. 6, the central bracket 13 is composed of two panels perpendicular to each other in the horizontal direction and the vertical direction, the whole is in a cross structure, the horizontal panel is provided with orifices 15, the orifices 15 are symmetrically and uniformly distributed on two sides of the vertical panel, the diameter range of the orifices 15 is 3-7 mm, when the air spring works, energy loss is generated when air in the first air chamber 11 and the second air chamber 12 flows through the orifices 15, and thus damping is increased to improve the damping effect; the upper end and the lower end of the vertical panel supporting piece 15 are away from the end faces of the first air chamber 11 and the second air chamber 12 by a certain distance, the range is controlled between 3 mm and 5mm, the arrangement can prevent the condition that the air chambers are severely deformed due to large impact load in the falling and transporting processes from occurring, so that the deformation of the vibration damper is in a controllable range, and the pipeline stress is prevented from being overlarge.
It will be appreciated that the central support 13 may be embedded in the elastomeric body 1 using an over-molding or two-shot molding process.
A waist ring 16 is arranged at the connecting part of the first air chamber 11 and the second air chamber 12 of the air spring, the waist ring 16 and a horizontal panel of the central support 13 are on the same plane, and a certain pretightening force is simultaneously given to the horizontal panel, so that the rigidity of the horizontal panel in the horizontal direction is improved, and the horizontal panel is prevented from bending and deforming due to the change of air pressure in the air chambers when the shock absorber works.
Further, in order to ensure the optimal damping effect of the air spring damping device, when designing, the stiffness k, the pressure bearing area a and the volume V of the air chamber of the air spring are calculated according to the following principles and formulas:
the natural frequency of the air spring is less than 1/3, i.e. ω, the excitation lower limit frequencynOmega/3 or less; stiffness of air spring
The pressure bearing area A and the volume V of the air chamber are represented by the formula W ═ NP0A and
and (4) determining. In the formula: w is the weight of the compressor and its piping; p0-the working pressure of the air spring; n is the number of air springs; paAtmospheric pressure, taking Pa＝1kgf/cm2(ii) a c, taking 1 to 1.4 as the polytropic exponent.
As shown in fig. 7, the upper and lower end faces of the air spring of this embodiment are respectively provided with a circular concave, the depth of the concave is the same as the thickness of the bottom gasket of the bolt, the radius of the concave is the same as the radius of the bottom gasket of the bolt, the bottom gasket of the bolt is embedded into the concave, and the bolt and the air spring are fixedly connected into a whole.
Further, holes matched with the bolts are formed in the positions, used for installing the air springs, of the chassis, and the chassis and the air springs, and the compressor base legs and the air springs are connected through the bolts and nuts with the gaskets.
The core problem of the invention is to provide a feasible scheme for replacing the traditional compressor vibration reduction foot pad, and the gourd-shaped air spring vibration reduction device is adopted, so that the axial load can be borne, the radial load and the torque can be borne, and the requirements of the compressor on vibration reduction of various loads can be met; the vibration isolation and noise isolation are good; the central bracket is used for isolating the first air chamber from the second air chamber, and the central bracket is provided with the air throttle holes, so that when the central bracket works, the air flows through the throttle holes to generate energy loss, thereby increasing the damping and being more beneficial to reducing the vibration.
Of course, it is understood by those skilled in the art that the idea of the present application is not limited to the compressor field, and the idea of the embodiment of the present application can be applied to solve the same or similar technical problems, and therefore, the present application is not limited thereto.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (12)
1. A vibration damping device comprises an elastic main body (1), a first connecting end (2) and a second connecting end (3), and is characterized in that load is transmitted between the first connecting end (2) and the second connecting end (3) through the elastic main body (1); the elastic body (1) is internally provided with at least two air chambers, and each air chamber is positioned between the first connecting end (2) and the second connecting end (3).
2. Damping device according to claim 1, characterized in that the elastic body (1) comprises a first air chamber (11) and a second air chamber (12), the first air chamber (11) and the second air chamber (12) being separated by a central support (13).
3. Damping device according to claim 2, characterized in that the central carrier (13) further has a support element (14), the support element (14) extending at both ends in the direction of the first connection end (2) and the second connection end (3), respectively.
4. Damping device according to claim 2, characterized in that the central carrier (13) also has at least one orifice (15), the orifice (15) communicating at both ends with the first (11) and second (12) air chambers, respectively.
5. Damping device according to claim 2, characterized in that it further comprises a waist ring (16) for tightening the elastic body (1) from the outside inwards in correspondence of the central support (13).
6. Damping device according to claim 2, characterized in that the central holder (13) consists of two panels perpendicular to each other in the horizontal direction and in the vertical direction, the whole being of a cross-shaped configuration, the horizontal panels being provided with orifices (15).
7. Damping device according to claim 2, characterized in that the central support (13) is of a rigid material, the central support (13) being integrally formed in the elastic body (1).
8. Damping device according to any one of claims 1 to 7, characterized in that the natural frequency of the damping device is less than 1/3 of the minimum excitation frequency of the load.
9. Damping device according to any of claims 1 to 7, characterized in that the damping device is a piston rod, a piston rodThe stiffness of the vibration damping device is
ωnW is the natural frequency of the vibration damping device, W is the load weight, and N is the number of vibration damping devices.
10. Damping device according to one of claims 1 to 7, characterized in that the damping device pressure-bearing area A and the air chamber volume V are given by the formula W-NP0A and
determining; w is the weight of the load, P0-the working pressure of the damping device; n is the number of the vibration damping devices; paAtmospheric pressure, taking Pa＝1kgf/cm2(ii) a c, taking 1 to 1.4 as the polytropic exponent.
11. A compressor comprising one or more vibration damping devices as claimed in any one of claims 1 to 10.
12. An appliance comprising one or more vibration damping devices as claimed in any one of claims 1 to 10, or comprising a compressor as claimed in claim 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010905684.5A CN112065689A (en) | 2020-09-01 | 2020-09-01 | Vibration damping device, compressor, and electric appliance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010905684.5A CN112065689A (en) | 2020-09-01 | 2020-09-01 | Vibration damping device, compressor, and electric appliance |
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| CN112065689A true CN112065689A (en) | 2020-12-11 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047989A (en) * | 2014-05-23 | 2014-09-17 | 大连大学 | Positive and negative pressure vibration isolation absorber |
| CN107390824A (en) * | 2017-08-16 | 2017-11-24 | 合肥宗平计算机科技有限公司 | Hard disk para-seismic support |
| CN206903830U (en) * | 2017-04-11 | 2018-01-19 | 浙江偌美装饰材料有限公司 | A kind of compressor of good damping effect |
| CN108953111A (en) * | 2018-08-13 | 2018-12-07 | 珠海格力电器股份有限公司 | Vibration damping member and compressor |
| CN208866231U (en) * | 2018-09-05 | 2019-05-17 | 杭州萧山八达汽车零部件有限公司 | A kind of transformer case Side opening punching die lamps structure |
| CN210686824U (en) * | 2019-06-12 | 2020-06-05 | 淮安颍益机械有限公司 | Adjustable pneumatic mechanical shock-proof foot pad |
-
2020
- 2020-09-01 CN CN202010905684.5A patent/CN112065689A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047989A (en) * | 2014-05-23 | 2014-09-17 | 大连大学 | Positive and negative pressure vibration isolation absorber |
| CN206903830U (en) * | 2017-04-11 | 2018-01-19 | 浙江偌美装饰材料有限公司 | A kind of compressor of good damping effect |
| CN107390824A (en) * | 2017-08-16 | 2017-11-24 | 合肥宗平计算机科技有限公司 | Hard disk para-seismic support |
| CN108953111A (en) * | 2018-08-13 | 2018-12-07 | 珠海格力电器股份有限公司 | Vibration damping member and compressor |
| CN208866231U (en) * | 2018-09-05 | 2019-05-17 | 杭州萧山八达汽车零部件有限公司 | A kind of transformer case Side opening punching die lamps structure |
| CN210686824U (en) * | 2019-06-12 | 2020-06-05 | 淮安颍益机械有限公司 | Adjustable pneumatic mechanical shock-proof foot pad |
Non-Patent Citations (2)
| Title |
|---|
| 张阿舟等: "《实用振动工程 第2册：振动控制与设计》", 31 January 1997, 航空工业出版社 * |
| 张阿舟等: "《振动控制工程》", 31 July 1989, 航空工业出版社 * |
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