阅读说明：本技术 一种减振装置以及制冷设备 (Vibration damper and refrigeration equipment ) 是由 王康 马海林 江世恒 肖庆 于 2020-04-29 设计创作，主要内容包括：本发明涉及家电技术领域,尤其涉及一种减振装置及制冷设备。该减振装置包括外壳、线圈组件、芯体以及安装组件,外壳由压电复合材料制成,线圈组件设置在外壳的内部且与外壳电连接,芯体由超磁致伸缩材料制成且设置在线圈组件的内部,安装组件设置在外壳的上端且用于安装压缩机,外壳的底端安装在底盘上。由于本发明的减振装置不再受隔振率的约束,本发明的减振装置能够对1HZ～100HZ范围内的振动均有较好效果,该减振装置能够对范围较宽的振动频率的振动起到较好的减振效果。该制冷设备,既能够在高频振动的工况下有较好的减振效果,还能够在低频振动的工况下有较好的减振效果。(The invention relates to the technical field of household appliances, in particular to a vibration damper and refrigeration equipment. The vibration damping device comprises a shell, a coil assembly, a core body and an installation assembly, wherein the shell is made of a piezoelectric composite material, the coil assembly is arranged in the shell and is electrically connected with the shell, the core body is made of a giant magnetostrictive material and is arranged in the coil assembly, the installation assembly is arranged at the upper end of the shell and is used for installing a compressor, and the bottom end of the shell is installed on a chassis. Because the vibration damping device is not limited by the vibration isolation rate, the vibration damping device has good effect on vibration in the range of 1HZ to 100HZ, and can play a good vibration damping effect on vibration with a wide range of vibration frequency. This refrigeration plant can enough have better damping effect under the operating mode of high-frequency vibration, can also have better damping effect under the operating mode of low-frequency vibration.)

1. A vibration damping device, comprising:

a housing (11) made of a piezoelectric composite material;

a coil assembly (12) disposed inside the housing (11) and electrically connected to the housing (11);

a core (13) made of a giant magnetostrictive material and disposed inside the coil assembly (12); and

a mounting assembly (14) disposed at an upper end of the housing (11) and configured to mount a device to be mounted.

2. Damping device according to claim 1, characterized in that the longitudinal section of the side wall of the housing (11) is wave-shaped.

3. The vibration damping device according to claim 1, wherein the housing (11) has a cylindrical shape, and the cross section of the housing (11) is circular.

4. The vibration damping device according to claim 1, characterized in that the vibration damping device (1) further comprises:

the core body (13) comprises a core body (131) and a supporting part (132), the supporting part (132) is fixedly connected with or integrally formed on the periphery of the core body (131), and the pre-pressing assembly (15) is arranged between the mounting assembly (14) and the supporting part (132).

5. Damping device according to claim 4, characterized in that the damping device (1) is intended for connecting a chassis (3) and a compressor (2), the core body (131) being fixed to the chassis (3).

6. Damping device according to claim 4, characterized in that the pre-compression assembly (15) is a spring or a rubber block.

7. Damping device according to claim 4, characterized in that the pre-compression assembly (15) is fitted around the outer circumference of the core body (131).

8. The vibration damping device according to claim 1, wherein the mounting member (14) is fitted around an outer periphery of the core body (13) and is slidable in a length direction of the core body (13).

9. The vibration damping device according to claim 8, characterized in that the mounting assembly (14) comprises:

a slide plate (141) provided at an upper end of the housing (11); and

a buffer part (142) provided on the slide plate (141), the device to be mounted being mounted on the buffer part (142).

10. Refrigeration appliance comprising a compressor (2) and a chassis (3), characterized in that it further comprises a vibration damping device (1) according to any one of claims 1 to 9, the compressor (2) being arranged on the mounting assembly (14) and the lower end of the casing (11) being arranged on the chassis (3).

11. The refrigeration equipment as claimed in claim 10, characterized in that the chassis (3) is provided with a positioning groove (31), the lower end of the shell (11) is inserted into the positioning groove (31), and the shape and size of the positioning groove (31) are adapted to the shape and size of the lower end of the shell (11).

Technical Field

The invention relates to the technical field of household appliances, in particular to a vibration damper and refrigeration equipment.

Background

The compressor is the core and heart of refrigeration equipment such as air conditioners, refrigerators, dehumidifiers and the like, and the capacity and the quality of the compressor directly determine the capacity and the quality of the refrigeration equipment. The compressor provides power for a refrigeration cycle, but the compressor generates useless and harmful vibration in the working process, the vibration sources are not only vibration generated by the operation of the compressor, but also vibration from the working environment of refrigeration equipment, such as an on-board air conditioner and an on-board refrigerator, and the vibration is generated when the vehicle moves.

The vibration of the compressor is not beneficial to refrigeration equipment, because the compressor is connected with other devices through a pipeline, the pipeline is forced to vibrate by the vibration generated by the compressor, the pipeline is deformed and broken by the vibration, and therefore a refrigerant is leaked, the refrigeration equipment cannot refrigerate, and the quality and the working reliability of the refrigeration equipment are affected. The vibration of the compressor is also transmitted to the whole refrigeration equipment to drive the whole refrigeration equipment to vibrate, so that the refrigeration equipment shakes, noise and abnormal sound are generated, the use comfort of the refrigeration equipment is influenced, and after-sale complaints and goods returns of users are easily caused.

A current refrigeration plant includes compressor, chassis and rubber foot pad, and the compressor includes the cylinder body and sets up the footing on the cylinder body, and the footing is connected with the chassis through rubber foot pad, through the deformation of rubber foot pad, reduces the vibration of compressor, but rubber foot pad can only play better damping effect to the vibration of certain vibration frequency within range. Particularly, the damping effect of rubber foot pad mainly depends on the vibration isolation rate, and the vibration isolation rate equals the natural frequency of rubber foot pad and divides by vibration frequency, and when the vibration isolation rate was between 3.5 ~ 5, the damping effect of rubber foot pad was better, exceeded 3.5 ~ 5 scope when the vibration isolation rate, and the damping effect of rubber foot pad is not good, so the rubber foot pad can only play better damping effect to the vibration of the vibration frequency in the certain extent. The rubber foot pad is limited by the material, and the natural frequency of the rubber foot pad cannot be too low, so that the vibration isolation rate of the rubber foot pad can exceed 5 aiming at low-frequency vibration below 20HZ, and the rubber foot pad cannot play a good vibration reduction effect aiming at the low-frequency vibration.

Therefore, the invention is urgently needed to provide a vibration reduction device and refrigeration equipment for solving the problem that a good vibration reduction effect cannot be realized on low-frequency vibration.

Disclosure of Invention

One object of the present invention is to provide a vibration damping device, which can achieve a good vibration damping effect for high-frequency vibration, can also achieve a good vibration damping effect for low-frequency vibration, and can achieve a good vibration damping effect for vibration with a wide range of vibration frequencies.

The invention also aims to provide the refrigerating equipment which has a good vibration reduction effect under the working condition of high-frequency vibration and a good vibration reduction effect under the working condition of low-frequency vibration.

In order to achieve the purpose, the invention adopts the following technical scheme:

a vibration damping device comprising:

a housing made of a piezoelectric composite material;

the coil assembly is arranged inside the shell and is electrically connected with the shell;

a core body made of a giant magnetostrictive material and disposed inside the coil assembly; and

and the mounting assembly is arranged at the upper end of the shell and is used for mounting a device to be mounted.

Preferably, the longitudinal section of the side wall of the housing is wavy.

Preferably, the housing has a cylindrical shape, and the cross section of the housing is circular.

Preferably, the vibration damping device further includes:

the core body comprises a core body and a supporting part, the supporting part is fixedly connected with or integrally formed on the periphery of the core body, and the pre-pressing assembly is arranged between the mounting assembly and the supporting part.

Preferably, the vibration damping device is used for connecting a chassis and a compressor, and the core body is fixed on the chassis.

Preferably, the pre-compression assembly is a spring or a rubber block.

Preferably, the pre-pressing assembly is sleeved on the periphery of the core body.

Preferably, the mounting assembly is sleeved on the periphery of the core body and can slide along the length direction of the core body.

Preferably, the mounting assembly comprises:

a slide plate disposed at an upper end of the housing; and

and the buffer part is arranged on the sliding plate, and the device to be installed is installed on the buffer part.

The refrigeration equipment comprises a compressor and a chassis, and further comprises the vibration damper, wherein the compressor is arranged on the mounting assembly, and the lower end of the shell is arranged on the chassis.

Preferably, the chassis is provided with a positioning groove, the lower end of the shell is inserted into the positioning groove, and the shape and the size of the positioning groove are adapted to those of the lower end of the shell.

The invention has the beneficial effects that:

the invention provides a vibration damping device which comprises a shell, a coil assembly, a core body and a mounting assembly, wherein the shell is made of a piezoelectric composite material, the coil assembly is arranged inside the shell and is electrically connected with the shell, the core body is made of a giant magnetostrictive material and is arranged inside the coil assembly, the mounting assembly is arranged at the upper end of the shell and is used for mounting a compressor, and the bottom end of the shell is mounted on a chassis. The piezoelectric composite material has a piezoelectric effect, the piezoelectric effect means that when the piezoelectric composite material is subjected to a changing pressure load, positive and negative charges in the piezoelectric composite material move in two opposite directions to form a voltage difference, the larger the pressure load is, the larger the voltage is, and when the piezoelectric composite material is subjected to the load, the piezoelectric composite material can be regarded as a power supply with the voltage changing along with the load. The properties of the giant magnetostrictive material are: when the material is in a changing magnetic field environment, a changing induction magnetic field can be generated in the giant magnetostrictive material, the changing induction magnetic field generates eddy current and induces a hysteresis effect, so that electromagnetic energy is converted into heat energy, and the giant magnetostrictive material is characterized by high energy conversion efficiency. The compressor irregularly vibrates to enable the shell to be subjected to pressure of load change, the piezoelectric effect of the piezoelectric composite material can generate changing current at the upper end and the lower end of the shell, the changing current is conducted to the coil assembly, the coil assembly generates a changing magnetic field due to the fact that the changing current is introduced, mechanical energy generated by vibration of the compressor is converted into electromagnetic energy, the changing magnetic field causes the inside of the core body to generate a changing induction magnetic field, the changing induction magnetic field generates eddy current and causes hysteresis effect, and finally the electromagnetic energy is converted into heat energy to be dissipated. Because the vibration damping device of the embodiment is not limited by the vibration isolation rate any more, the vibration damping device of the embodiment can have a good effect on the vibration within the range of 1HZ to 100HZ, so that the vibration damping device can realize a good vibration damping effect on high-frequency vibration and low-frequency vibration, and can play a good vibration damping effect on the vibration with a wide range of vibration frequency.

The refrigeration equipment provided by the invention has a good vibration reduction effect under the working condition of high-frequency vibration and a good vibration reduction effect under the working condition of low-frequency vibration by applying the vibration reduction device.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a refrigeration apparatus provided by an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a vibration damping device provided in an embodiment of the present invention without a compressor;

FIG. 3 is a schematic structural diagram of a compressor mounted on a vibration damping device provided in an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a chassis provided in an embodiment of the present invention.

The figures are labeled as follows:

1-a vibration damping device; 2-a compressor; 3-a chassis;

11-a housing; 12-a coil assembly; 13-a core; 14-a mounting assembly; 15-a pre-compaction assembly; 21-cylinder body; 22-footing; 31-a positioning groove;

121-coil; 122-a coil former; 123-coil support; 131-a core body; 132-a support; 141-a slide plate; 142-a buffer;

1221-upper plate; 1222-a lower plate; 1223-connecting plate; 1421-first limiting structure; 1422-connecting structure; 1423-second limiting structure.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The present embodiment provides a refrigeration apparatus, as shown in fig. 1, the refrigeration apparatus includes a vibration damping device 1, a compressor 2 and a chassis 3, wherein the compressor 2 includes a cylinder 21 and a footing 22, the footing 22 is installed on the outer periphery of the cylinder 21, the footing 22 is connected with the chassis 3 through the vibration damping device 1, and the vibration damping device 1 can achieve the effect of damping vibration of the compressor 2. In order to effectively limit the rotation of the compressor 2 relative to the chassis 3, the three groups of the feet 22 are provided, the three groups of the feet 22 are uniformly distributed on the periphery of the cylinder 21 along the circumferential direction of the cylinder 21, and each group of the feet 22 is correspondingly provided with one damping device 1. The refrigeration equipment can be an air conditioner, a refrigerator, a dehumidifier and the like.

For the problem that the conventional rubber foot pad cannot achieve a good effect on low-frequency vibration, as shown in fig. 2 and 3, the vibration damping device 1 provided by the present embodiment includes a housing 11, a coil assembly 12, a core 13 and a mounting assembly 14, the housing 11 is made of a piezoelectric composite material, the coil assembly 12 is disposed inside the housing 11 and electrically connected to the housing 11, the core 13 is made of a giant magnetostrictive material and disposed inside the coil assembly 12, the mounting assembly 14 is disposed at the upper end of the housing 11 and used for mounting the compressor 2, and the bottom end of the housing 11 is mounted on the chassis 3. The piezoelectric composite material has a piezoelectric effect, the piezoelectric effect means that when the piezoelectric composite material is subjected to a changing pressure load, positive and negative charges in the piezoelectric composite material move in two opposite directions to form a voltage difference, the larger the pressure load is, the larger the voltage is, and when the piezoelectric composite material is subjected to the load, the piezoelectric composite material can be regarded as a power supply with the voltage changing along with the load. The properties of the giant magnetostrictive material are: when the giant magnetostrictive material is in a changing magnetic field environment, a changing induction magnetic field can be generated inside the giant magnetostrictive material, and the changing induction magnetic field generates eddy current and induces a hysteresis effect, so that electromagnetic energy is converted into heat energy. The compressor 2 irregularly vibrates to make the shell 11 receive the pressure of load change, because the piezoelectric effect of piezoelectricity combined material can produce the current that changes at the upper and lower both ends of shell 11, the current that changes conducts on coil pack 12, coil pack 12 produces the magnetic field that changes owing to letting in the current that changes, the mechanical energy who produces the vibration of compressor 2 converts the electromagnetic energy into, the magnetic field that changes causes the inside of core 13 and can produce the change induction field, the change induction field produces the vortex and causes hysteresis effect, finally, the form of converting electromagnetic energy into heat energy is given off. Because the vibration damping device 1 of the present embodiment is not constrained by the vibration isolation rate, the vibration damping device 1 of the present embodiment can have a good effect on the vibrations within the range of 1HZ to 100HZ, so that the vibration damping device 1 can achieve a good vibration damping effect on high-frequency vibrations, can also achieve a good vibration damping effect on low-frequency vibrations, and can achieve a good vibration damping effect on vibrations with a wide range of vibration frequencies. The vibration damping device 1 can be applied to refrigeration equipment and other equipment with vibration, and can also play a vibration damping role.

In the mode that the existing rubber foot pad is converted into rubber deformation energy through vibration, the vibration needs to be absorbed through the deformation of rubber, the rubber deformation needs a certain time, and the vibration reduction response speed is slow. The piezoelectric composite material in the embodiment can convert vibration into heat energy according to load change in real time, so that the vibration reduction response speed is higher.

The refrigeration equipment is mainly easy to vibrate in a working state and a transportation state, the refrigeration equipment is usually in a vibration environment below 20Hz in the transportation process, and the vibration damping device 1 of the embodiment can play a good vibration damping effect on the refrigeration equipment in the transportation process.

In addition, compressor 2 will be for chassis 3 to be circumferential motion at the working process, however, the rubber foot pad texture that traditional is used for the damping is softer, so the shear stiffness of rubber foot pad is low, and torsional deformation takes place for the rubber foot pad easily, and the rubber foot pad is more weak to compressor 2's restraint, so can't realize being in the better damping effect of compressor 2 under operating condition. As shown in fig. 2, after the compressor 2 is mounted on the mounting assembly 14, the mounting assembly 14 is pressed against the upper end of the housing 11, when the compressor 2 has a tendency to rotate, the mounting assembly 14 drives the housing 11 to generate torsional deformation, the housing 11 can also generate a variable current, after the variable current is introduced into the coil assembly 12, the coil assembly 12 generates a variable magnetic field, the variable magnetic field causes a variable induced magnetic field to be generated inside the core 13, the variable induced magnetic field generates an eddy current and induces a hysteresis effect, and finally the electromagnetic energy is converted into heat energy to be dissipated, and the vibration damping device 1 can reduce the vibration of the compressor 2 in the working process. And because the shell 11 is hard, compared with the traditional rubber foot pad, the shearing rigidity can be effectively improved, the vibration damper 1 is not easy to generate torsional deformation when the compressor 2 works, the vibration damper 1 has better constraint on the compressor 2, the better vibration damping effect on the compressor 2 in a working state can be effectively realized, and the reliability of a pipeline connected with the compressor 2 is improved.

In order to facilitate understanding of the structure of the housing 11, as shown in fig. 2 and 3, the longitudinal section of the sidewall of the housing 11 is wavy, and the wavy structure can ensure that the housing 11 has a certain expansion and contraction deformation capability along the vertical direction, so as to further attenuate the vibration, further improve the vibration attenuation effect of the vibration attenuation device 1, and particularly attenuate the vibration in the vertical direction. Wherein, the wave shape can be sine wave shape or sawtooth shape.

In addition, as shown in fig. 2 and 3, the housing 11 is cylindrical, and the cross section of the housing 11 is circular, because the circular perimeter in the confined space is the largest, the cross section of the housing 11 is circular, so that the expanded perimeter of the housing 11 can be the largest, the housing 11 contains more piezoelectric composite materials, the efficiency of converting vibration into current can be effectively improved, and the vibration reduction effect of the vibration reduction device 1 can be improved.

In order to improve the mounting efficiency of the housing 11 on the chassis 3, as shown in fig. 4, a positioning groove 31 is formed on the chassis 3, the lower end of the housing 11 is inserted into the positioning groove 31, the shape and the size of the positioning groove 31 are adapted to the shape and the size of the lower end of the housing 11, and an operator can mount the housing 11 on the chassis 3 quickly.

To facilitate understanding of the structure of the coil assembly 12, as shown in fig. 2 and 3, the coil assembly 12 includes a coil 121, a coil bobbin 122, and a coil support 123, the coil 121 is mounted on the coil bobbin 122, the coil 121 is electrically connected to the housing 11 through a wire, and the coil bobbin 122 is fitted around the core 13. Be provided with the coil support 123 of being made by insulating material between coil skeleton 122 and chassis 3, can effectively avoid the electric current on the coil pack 12 to conduct on chassis 3 through setting up coil support 123, avoid operating personnel to appear electrocuteeing danger. The coil bobbin 122 includes an upper plate 1221, a lower plate 1222, and a connection plate 1223, the connection plate 1223 being a cylindrical structure, the upper plate 1221 and the lower plate 1222 being circular end plates, the upper plate 1211 being disposed at an upper end of the connection plate 1223, the lower plate 1222 being disposed at a lower end of the connection plate 1223, the upper plate 1221, the lower plate 1222, and the connection plate 1223 forming mounting grooves in which the coil 121 is received. In order to improve the utilization of the internal space of the housing 11, the diameters of the upper plate 1221 and the lower plate 1222 are equal to the diameter of the housing 11. In the present embodiment, the number of turns of the coil 121 is 2500 to 3500, and the resistance of the coil 121 is 10 Ω to 15 Ω.

In order to facilitate understanding of the structure of the mounting assembly 14, as shown in fig. 2 and 3, the mounting assembly 14 includes a sliding plate 141 and a buffer portion 142, the sliding plate 141 is disposed at the upper end of the housing 11 and can be abutted against the upper end of the housing 11, the buffer portion 142 is disposed on the sliding plate 141, the compressor 2 is mounted on the buffer portion 142, and the buffer portion 142 can prevent rigid collision between the base 22 of the compressor 2 and the sliding plate 141 during operation, thereby improving the service life of the vibration damping device 1. In order to ensure that the mounting assembly 14 does not deviate in sliding along the vertical direction, the mounting assembly 14 is sleeved on the periphery of the core body 13 and can slide along the length direction of the core body 13, and the core body 13 can play a good guiding role in guiding the mounting assembly 14. In order to realize smooth sliding of the mounting member 14 relative to the core 13, the core 13 is spaced from the outer periphery of the mounting member 14 by a distance of 0.5mm to 4 mm. When the interval is 1mm, it is possible to ensure both smooth sliding of the mount assembly 14 with respect to the core body 13 and a small size of the vibration damping device 1.

As shown in fig. 2, the buffering portion 142 is made of rubber, the buffering portion 142 includes a first limiting structure 1421, a connecting structure 1422 and a second limiting structure 1423, the first limiting structure 1421 is disposed at the upper end of the connecting structure 1422, the second limiting structure 1423 is disposed at the lower end of the connecting structure 1422, and the cross section of the buffering portion 142 is "i" shaped. As shown in fig. 3, the footing 22 is installed in the space between the first and second limiting structures 1421 and 1422, and the first and second limiting structures 1421 and 1422 can limit the footing 22 from being separated from the buffer portion 142.

One characteristic of giant magnetostrictive materials is: the thermal energy conversion efficiency of the giant magnetostrictive material in a compressed state is higher, and in order to improve the thermal energy conversion efficiency of the core body 13 and improve the vibration damping effect of the vibration damping device 1, the vibration damping device 1 further comprises a pre-compression assembly 15, the core body 13 comprises a core body 131 and a support portion 132, the support portion 132 is fixedly connected or integrally formed on the periphery of the core body 131, and the pre-compression assembly 15 is arranged between the mounting assembly 14 and the support portion 132. Further, the vibration damping device 1 is used to connect the base plate 3 and the compressor 2, and the core body 131 is fixed to the base plate 3. When the device to be mounted is mounted on the mounting assembly 14, the mounting assembly 14 and the supporting portion 132 jointly press the pre-pressing assembly 15 to make the pre-pressing assembly 15 in a pre-pressing state, and the downward pressure of the pre-pressing assembly 15 on the supporting portion 132 presses the core body 131 to the chassis 3, so that the core body 131 is in a pressed state, the heat energy conversion efficiency of the core body 13 is improved, and the vibration damping effect of the vibration damping device 1 is improved. The fixing manner of the core body 131 and the chassis 3 may be welding or fixing connection by screws. Specifically, the supporting portion 132 and the core body 131 may be fixedly connected by a fixing member such as a screw, or the supporting portion 132 and the core body 131 may be integrally formed by an injection molding process, and the supporting portion 132 and the core body 131 are fixedly connected, so that the pre-compression assembly 15 can be better supported, the supporting portion 132 is prevented from moving relative to the core body 131, the downward pressure of the pre-compression assembly 15 acting on the supporting portion 132 is increased, the core body 131 is pressed more tightly, the heat energy conversion efficiency of the core body 13 is further increased, and the vibration damping effect of the vibration damping device 1 is further improved. In addition, the pre-compression assembly 15 can further absorb the vibration of the compressor 2 in the vertical direction through the deformation of the pre-compression assembly 15, so that the vibration reduction effect of the vibration reduction device 1 is further improved, and the reliability of a pipeline connected with the compressor 2 is improved. Specifically, pre-compression assembly 15 may be a spring or a rubber block, wherein a spring is preferable because the spring can provide a larger elastic restoring force, so that core body 131 is pressed more, the thermal energy conversion efficiency of core body 13 is higher, and the vibration damping effect is better. In the embodiment, the diameter of the core body 131 is between 8 mm and 12mm, and the length of the core body 131 is between 80 mm and 120mm, so that the core body 13 can ensure good heat energy conversion efficiency in a limited space. As shown in fig. 2, the compressor 2 is not installed on the vibration damping device 1, and the pre-compression assembly 15 is in the original state, and a certain gap exists between the sliding plate 141 and the shell 11, when the compressor 2 is installed on the sliding plate 141, the pre-compression assembly 15 is compressed, and the compressed pre-compression assembly 15 can act on the downward acting force on the supporting portion 132, so that the core body 131 is well compressed, and the heat energy conversion efficiency of the core body 131 is improved. Specifically, when the compressor 2 is not attached to the vibration damping device 1, a gap of 5mm to 12mm exists between the slide plate 141 and the housing 11.

As shown in fig. 2 and 3, the pre-pressing assembly 15 is sleeved on the outer periphery of the core body 13, and the core body 13 can guide the pre-pressing assembly 15, so as to prevent the pre-pressing assembly 15 from being separated from the mounting assembly 14 and the supporting portion 132 when the pre-pressing assembly 15 is deformed, and ensure the normal use of the vibration damping device 1.

For the convenience of understanding the vibration damping device 1 provided in the present embodiment, as shown in fig. 2 to 4, the installation process of the vibration damping device 1 is as follows:

first, the core body 131 is fixed to the chassis 3; secondly, the bottom end of the housing 11 is mounted in the positioning groove 31; then, the coil support 123 is passed through the core 13 and mounted in the positioning groove 31; then, the bobbin 122 around which the coil 121 is wound is slid into the inside of the case 11 along the core 13; passing the pre-press assembly 15 through the core body 131 and over the support portion 132, passing the mounting assembly 14 through the core body 131 and over the pre-press assembly 15; the footing 22 is mounted on the mounting assembly 14, and the cylinder 21 is mounted on the footing 22.

For the convenience of understanding the vibration damping device 1 provided in the present embodiment, the operation of the vibration damping device 1 is as follows:

as shown in fig. 2, when the compressor 2 is not mounted on the buffer portion 142, the buffer portion 142 is provided with a gap from the housing 11 in the vertical direction; as shown in fig. 3, after the compressor 2 is mounted on the cushioning portion 142, the pre-press assembly 15 is compressed, and the pre-press assembly 15 compresses the core 13 together with the base plate 3. When the compressor 2 has a vibration tendency, the mounting assembly 14 drives the shell 11 to deform, the shell 11 generates a changing current, the coil assembly 12 generates a changing magnetic field after the changing current is introduced into the coil assembly 12, the changing magnetic field causes a changing induction magnetic field to be generated inside the core body 13, the changing induction magnetic field generates an eddy current and causes a hysteresis effect, and finally, the electromagnetic energy is converted into heat energy to be dissipated.

It is noted that the foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.