CN211692970U - Piezoelectric actuator device for damping piezoelectric fan set - Google Patents
Piezoelectric actuator device for damping piezoelectric fan set Download PDFInfo
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- CN211692970U CN211692970U CN201922365637.1U CN201922365637U CN211692970U CN 211692970 U CN211692970 U CN 211692970U CN 201922365637 U CN201922365637 U CN 201922365637U CN 211692970 U CN211692970 U CN 211692970U
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Abstract
The utility model discloses a piezoelectric actuator device for damping piezoelectric fan set, which comprises a base, wherein the piezoelectric fan set and a damping piezoelectric actuator are fixed on the base; the piezoelectric fan blade comprises a piezoelectric actuator fixedly arranged on the base and a metal sheet connected to the free end of the piezoelectric actuator. The vibration-damping piezoelectric actuator comprises a piezoelectric bimorph rigidly fixed on a base and a mass block arranged on the top of the piezoelectric bimorph. The utility model discloses the damping actuator who installs on same base is utilized, sets up the quality piece weight at adjustment damping piezoelectric actuator top, adjusts damping actuator self resonant frequency to unanimous with the operating frequency of piezoelectric fan group to the vibration that the damping piezoelectric actuator of back drive produced utilizes the vibration that damping piezoelectric actuator produced, offsets or reduces the vibration of piezoelectric fan group. On the basis of not influencing the space structure and the performance of the fan set, the vibration of the piezoelectric fan set is improved, and the application range of the piezoelectric fan is widened.
Description
Technical Field
The utility model belongs to the technical field of piezoceramics, concretely relates to a piezoelectric actuator device for damping of piezoelectric fan group.
Background
The piezoelectric fan is a novel heat dissipation device, in order to achieve the maximum air quantity, a plurality of piezoelectric fan blades are usually combined together to form a fan set, in order to achieve the highest conversion efficiency, the piezoelectric fan blades usually deflect in a reciprocating mode in a uniform direction, at the moment, the mounting base is subjected to the reaction force of the piezoelectric fan blades deflecting in the reciprocating mode, and the reaction force of the superposition of the piezoelectric fan blades forms strong vibration. The vibration of the piezoelectric fan set affects the heat-dissipating device, which causes application limitation.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem: the mounting base forms stronger vibration due to the reaction force of the piezoelectric fan blades, and the vibration affects the heat-dissipated equipment, so that the application is limited.
The technical scheme is as follows: in order to solve the technical problem, the utility model discloses a technical scheme as follows:
the piezoelectric actuator device for damping the piezoelectric fan set comprises a base, wherein the base is fixedly provided with the piezoelectric fan set and a damping piezoelectric actuator.
Preferably, the piezoelectric fan assembly includes a plurality of piezoelectric fan blades rigidly disposed on a base.
Preferably, the piezoelectric fan blade comprises a piezoelectric actuator fixedly arranged on the base and a metal sheet connected to the free end of the piezoelectric actuator.
Preferably, the vibration-damping piezoelectric actuator comprises a piezoelectric bimorph rigidly fixed to a base and a mass disposed on top of the piezoelectric bimorph.
Preferably, the mass is bonded on top of the piezoelectric bimorph.
Preferably, the weight of the mass block on the top of the vibration-damping piezoelectric actuator is adjusted, the resonance frequency of the vibration-damping piezoelectric actuator is adjusted to be consistent with the working frequency of the piezoelectric fan group, the vibration-damping piezoelectric actuator is driven reversely, and the vibration of the piezoelectric fan group is counteracted or reduced by utilizing the vibration generated by the vibration-damping piezoelectric actuator.
Preferably, one or more vibration-damping piezoelectric actuators are provided in accordance with the condition of vibration of the piezoelectric fan unit. Has the advantages that: compared with the prior art, the utility model has the advantages of it is following:
the utility model discloses the vibration damping actuator who installs on same base is utilized, sets up the weight of the quality piece at adjustment damping piezoelectric actuator top, adjusts vibration damping actuator self resonant frequency to unanimous with the operating frequency of piezoelectric fan group to the vibration that back drive damping piezoelectric actuator utilized vibration damping piezoelectric actuator to produce offsets or reduces the vibration of piezoelectric fan group. On the basis of not influencing the space structure and the performance of the fan set, the vibration of the piezoelectric fan set is improved, and the application range of the piezoelectric fan is widened.
Drawings
FIG. 1 is a schematic diagram of a piezoelectric actuator device for damping vibration of a piezoelectric fan assembly;
FIG. 2 is a schematic diagram of the operation of a piezoelectric actuator device vibration-damped piezoelectric actuator for vibration damping of a piezoelectric fan assembly.
Detailed Description
The present invention will be further illustrated by the following specific examples, which are carried out on the premise of the technical scheme of the present invention, and it should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1 and 2, the piezoelectric actuator device for damping vibration of a piezoelectric fan assembly according to the present embodiment includes a base 1, and the piezoelectric fan assembly and a vibration damping piezoelectric actuator 2 are fixedly disposed on the base 1. The piezoelectric fan set comprises a plurality of piezoelectric fan blades 3 rigidly arranged on a base 1. The piezoelectric fan blade 3 includes a piezoelectric actuator 31 fixedly disposed on the base 1 and a metal plate 32 attached to a free end of the piezoelectric actuator 31. The vibration-damping piezoelectric actuator 2 includes a piezoelectric bimorph 21 rigidly fixed to the base 1 and a mass 22 adhesively disposed on top of the piezoelectric bimorph.
In order to ensure the air quantity, the piezoelectric fan blades 3 of the piezoelectric fan set are installed more densely, all the piezoelectric fan blades 3 work in a reciprocating swing mode in the same direction, at the moment, the installation base 1 is subjected to corresponding reaction force, and the base 1 vibrates due to the reciprocating reaction force.
The weight of the mass block 22 at the top of the vibration-damping piezoelectric actuator 2 is adjusted, the self resonant frequency of the vibration-damping piezoelectric actuator 2 is adjusted to be consistent with the working frequency of the piezoelectric fan set, the vibration-damping piezoelectric actuator 2 is driven reversely, and the vibration of the piezoelectric fan set is offset or reduced by using the vibration generated by the vibration-damping piezoelectric actuator 2. One or more vibration-damping piezoelectric actuators 2 are provided according to the condition of vibration of the piezoelectric fan unit. The vibration of the piezoelectric fan set is improved, and the application range of the piezoelectric fan is expanded.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A piezoelectric actuator device for damping vibration of a piezoelectric fan assembly, comprising: the vibration-damping piezoelectric actuator comprises a base (1), wherein a piezoelectric fan set and a vibration-damping piezoelectric actuator (2) are fixedly arranged on the base (1).
2. A piezoelectric actuator device for damping vibration of a piezoelectric fan unit as defined in claim 1, wherein: the piezoelectric fan set comprises a plurality of piezoelectric fan blades (3) which are rigidly arranged on a base (1).
3. A piezoelectric actuator device for damping vibration of a piezoelectric fan unit as defined in claim 2, wherein: the piezoelectric fan blade (3) comprises a piezoelectric actuator (31) fixedly arranged on the base (1) and a metal sheet (32) connected to the free end of the piezoelectric actuator (31).
4. A piezoelectric actuator device for damping vibration of a piezoelectric fan unit as defined in claim 1, wherein: the vibration reduction piezoelectric actuator (2) comprises a piezoelectric bimorph (21) rigidly and fixedly arranged on the base (1) and a mass block (22) arranged at the top of the piezoelectric bimorph (21).
5. A piezoelectric actuator device for damping vibration of a piezoelectric fan unit as defined in claim 4, wherein: the mass block (22) is bonded to the top end of the piezoelectric bimorph (21).
6. A piezoelectric actuator device for damping vibration of a piezoelectric fan unit as defined in claim 4, wherein: adjusting the weight of the mass block (22) at the top of the vibration-reduction piezoelectric actuator (2), adjusting the self resonant frequency of the vibration-reduction piezoelectric actuator (2) to be consistent with the working frequency of the piezoelectric fan set, reversely driving the vibration-reduction piezoelectric actuator (2), and offsetting or reducing the vibration of the piezoelectric fan set by using the vibration generated by the vibration-reduction piezoelectric actuator (2).
7. A piezoelectric actuator device for damping vibration of a piezoelectric fan unit as defined in claim 4, wherein: one or more vibration-damping piezoelectric actuators (2) are arranged according to the vibration condition of the piezoelectric fan group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922365637.1U CN211692970U (en) | 2019-12-25 | 2019-12-25 | Piezoelectric actuator device for damping piezoelectric fan set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922365637.1U CN211692970U (en) | 2019-12-25 | 2019-12-25 | Piezoelectric actuator device for damping piezoelectric fan set |
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| Publication Number | Publication Date |
|---|---|
| CN211692970U true CN211692970U (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922365637.1U Active CN211692970U (en) | 2019-12-25 | 2019-12-25 | Piezoelectric actuator device for damping piezoelectric fan set |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023202068A1 (en) * | 2022-04-22 | 2023-10-26 | 广东美的制冷设备有限公司 | Air treatment device and control method for air treatment device |
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2019
- 2019-12-25 CN CN201922365637.1U patent/CN211692970U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023202068A1 (en) * | 2022-04-22 | 2023-10-26 | 广东美的制冷设备有限公司 | Air treatment device and control method for air treatment device |
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