CN210714982U - Vibration and noise reduction device for air energy heat pump - Google Patents
Vibration and noise reduction device for air energy heat pump Download PDFInfo
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- CN210714982U CN210714982U CN201921791302.XU CN201921791302U CN210714982U CN 210714982 U CN210714982 U CN 210714982U CN 201921791302 U CN201921791302 U CN 201921791302U CN 210714982 U CN210714982 U CN 210714982U
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Abstract
The utility model discloses a vibration damping and noise reduction device for air energy heat pump, including the compressor, install passive vibration damping and noise reduction mechanism and the acoustics black hole noise reduction mechanism around the compressor, passive vibration damping and noise reduction mechanism includes one deck damping element, crosses cab apron, two layers of damping element, base, inhales the sound cotton, the sound cotton is inhaled to perpendicular being provided with all around of base, and upper portion is provided with a plurality of two layers of damping element, installs the cab apron on this two layers of damping element, installs a plurality of one deck damping element on this cab apron, and this one deck damping element is connected to the compressor from the below; the acoustic black hole noise reduction mechanism is arranged on the sound absorption cotton around the compressor. The utility model combines passive vibration reduction and noise reduction with acoustic black hole noise reduction to achieve the purpose of energy absorption or vibration reduction and noise reduction; and then realized full frequency band and fallen making an uproar, compensatied and utilized traditional acoustics black hole to carry out the damping and fall making an uproar, the limitation that the low frequency is difficult to realize makes the damping noise reduction effect better.
Description
Technical Field
The utility model relates to a device of making an uproar falls in the damping especially relates to a device of making an uproar falls in damping that air energy heat pump was used.
Background
The air energy heat pump works through medium heat exchange, the life of people is more convenient due to the generation of the air energy heat pump, time is saved due to the function of the air energy heat pump, a user is helped to better live and work, the traditional air energy heat pump is extremely high in noise, and particularly, the noise generated when the compressor runs reaches 80 decibels, so that inconvenience is brought to the user.
Noise in acoustic media such as air and water is caused by the elastic wave propagation effect in the structure and the mutual coupling action of the structure elastic wave and the surrounding acoustic media (structure sound) on the one hand, and the mutual interaction of sound waves of a sound field (air sound) on the other hand; therefore, the noise in the sound medium is controlled from the two directions, namely the elastic wave behavior in the structure and the sound wave in the air are controlled, so that the vibration and noise reduction of the sound space are realized; wave manipulation methods can be divided into two categories: active and passive methods; the active method generally needs to provide energy from the outside, the system is complex to realize, and has a certain distance from the practicability, so the passive method is generally used in the current engineering structure; damping materials are mostly adopted in the existing passive method, and sound absorption materials attenuate bending waves and sound waves, but with the development of science and technology and society, the requirements of people on the comfort, reliability, safety and durability of equipment are higher and higher, so that the existing passive method cannot meet the design requirements; particularly, under the current national strategic development requirement of 'comprehensively improving the technical level of important equipment' in China, a new theory, a new method and a new technology for damping and reducing noise of the structure are more necessary to be vigorously developed; the proposal of the acoustic black hole concept opens up a brand-new chapter for the research of artificial control of wave propagation in the elastic medium and the structure and also provides a new opportunity for the theory and technical breakthrough of vibration and noise reduction of the structure.
Disclosure of Invention
The utility model aims to provide a: the vibration and noise reduction device for the air energy heat pump achieves the purposes of energy absorption or vibration and noise reduction by combining passive vibration and noise reduction with acoustic black hole noise reduction.
The utility model adopts the technical scheme as follows: a vibration and noise reduction device for an air energy heat pump comprises a compressor, a passive vibration and noise reduction mechanism and an acoustic black hole noise reduction mechanism, wherein the passive vibration and noise reduction mechanism and the acoustic black hole noise reduction mechanism are arranged around the compressor and comprise a layer of vibration reduction element, a transition plate, two layers of vibration reduction elements, a base and sound absorption cotton; the acoustic black hole noise reduction mechanism is arranged on the sound absorption cotton around the compressor.
The utility model discloses a theory of operation does: 3 layers of vibration damping elements are arranged on three feet at the lower part of the compressor to support the compressor so as to reduce and eliminate the vibration force transmitted to the base by the compressor; the first layer of vibration reduction elements are upper layer vibration isolators, have a combined compression and shearing bearing mode and good impact resistance, and the compressor is arranged on the transition plate through the plurality of upper layer vibration isolators; the transition plate is connected to a layer of damping elements from below; the two-layer vibration reduction element is connected to the transition plate from the lower part, and specifically, 5 lower-layer vibration isolators serving as the two-layer vibration reduction element are arranged below the transition plate; the base is fixedly connected with the ground and the two-layer vibration damping element is mounted on the base, so that a double-layer vibration isolation structure for isolating vibration of the compressor is formed; the sound absorption cotton is vertically and fully arranged around the base in a surrounding way, so that the sound absorption effect is achieved, and for better sound absorption and noise reduction, the inner wall of the sound absorption cotton is pasted with an acoustic black hole noise reduction mechanism in a matrix arrangement or a delta arrangement or a free arrangement;
for a typical closed space, the fluctuation energy of the sound absorption cotton can be transferred to the acoustic black hole noise reduction mechanism through the connecting ring; the utility model discloses the crooked ripples that the mechanism of making an uproar falls in the black hole of acoustics is based on the propagation in the solid medium reduces according to certain power function along with structure thickness, and its corresponding phase velocity and group velocity also reduce to in the region that structure thickness thins is gathered with the crooked ripples of broadband on certain spatial dimension, in the entrance area of the mechanism of making an uproar falls in the black hole of acoustics, the wave propagation velocity of certain frequency is unchangeable, the wavelength can not change yet; in the acoustic black hole area, the wave propagation speed is reduced along with the reduction of the power exponent of the thickness, the wavelength is reduced, and the vibration amplitude is increased; most of bending wave energy is consumed by combining the annular damping gasket, so that the purposes of high-efficiency energy absorption or vibration reduction and noise reduction are achieved; the acoustic black hole noise reduction mechanism of the utility model adopts an epitaxial acoustic structure, the weak wave velocity of the structure is at the outermost end of the structure, the outer end is restrained by the structure to be small, the deformation is easier, and the acoustic black hole effect is easier to occur; on the other hand, for low-frequency wave energy, the low-frequency modal density of sound-absorbing cotton in a typical closed space is usually very low, vibration radiation noise is mainly distributed at a few discrete frequencies, a single acoustic black hole noise reduction mechanism combines the characteristics of a Helmholtz resonance silencer, and a plurality of acoustic black hole noise reduction mechanisms can be simultaneously used through optimized design so as to simultaneously realize noise reduction of a plurality of frequencies, so that the design based on the two mechanisms can realize full-frequency-band noise reduction.
Further, the first layer of vibration reduction element is a vibration isolator or a vibration absorber, the second layer of vibration reduction element is a vibration isolator or a rigid cushion block or a vibration absorber, and one or two layers of vibration reduction elements can be freely selected according to design requirements.
Furthermore, the bottom of the compressor is provided with three lug buckles, and 3 damping elements are arranged on one layer and are respectively connected with three lug bolts of the three lug buckles; the installation is more stable and rapid.
Further, the two layers of vibration reduction element bolts are arranged between the transition plate and the base, and a double-layer vibration isolation structure for vibration isolation of the compressor is formed.
Furthermore, the acoustic black hole noise reduction mechanism is of a disc-shaped structure, the distance between the upper surface and the lower surface of the disc-shaped structure gradually decreases from the central axis of the disc-shaped structure to the outer edge of the disc-shaped structure, the disc-shaped structure comprises a black hole area, the distance between the upper surface and the lower surface of the black hole area changes in a power exponent form from the central axis to the outer edge direction, a disc convex edge is arranged on the upper surface of the disc-shaped structure, a connecting ring is arranged on the inner wall of the lower surface of the disc-shaped structure and connected with the resonant cavity, a through hole is formed in the top of the resonant cavity, a magic tape is arranged at the bottom of the connecting ring, and the connecting; and the full-frequency-band noise reduction is realized.
Furthermore, the acoustic black hole noise reduction mechanism and the sound absorption cotton are arranged in a matrix or in a delta shape or in a free arrangement through magic tapes; and (4) freely arranging according to design requirements and cost budget.
Furthermore, the acoustic black hole noise reduction mechanism also comprises an annular damping gasket, the outer diameter of the annular damping gasket is the same as that of the disc-shaped structure, and the annular damping gasket is adhered to the lower surface of the disc-shaped structure; the circular damping gasket consumes most of the bending wave energy, so that the purposes of high-efficiency energy absorption or vibration reduction and noise reduction are achieved.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
the utility model discloses not only set up two-layer damping element in the bottom of compressor, install around and inhale the sound cotton, make the compressor obtain tentatively to fall the noise, and inhale the black hole noise reduction mechanism of a plurality of acoustics on the sound cotton matrix installation, acoustics black hole noise reduction mechanism utilizes the characteristic that ABH effect and dynamic vibration absorbed, carries out the broadband damping to fall the noise to the controlled structure, need not to weaken the thickness of controlled structure, avoids the controlled structure to appear local high dynamic response and the reduction of structural strength; simultaneously through set up resonant cavity and through-hole on disc structure, make resonant cavity and through-hole form the sound resonant cavity, carry out effective control to the low frequency sound wave, and then realized full frequency band and fallen making an uproar, remedy and utilized traditional acoustics black hole to carry out the damping and fall the noise, the low frequency is difficult to the limitation that realizes, makes the damping noise reduction effect better.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic top view of the structure of FIG. 1;
FIG. 3 is a schematic view of the installation of the acoustic black hole noise reduction mechanism on the sound absorption cotton;
FIG. 4 is a schematic structural diagram of an acoustic black hole noise reduction mechanism;
labeled as: 1-compressor, 2-three-lug buckle, 3-one layer of vibration reduction element, 4-transition plate, 5-two layers of vibration reduction element, 6-base, 7-sound absorption cotton, 8-acoustic black hole noise reduction mechanism, 81-disc convex edge, 82-black hole area, 83-connecting ring, 84-magic tape, 85-circular damping gasket, 86-through hole and 87-resonant cavity.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
As shown in fig. 1-4, a vibration damping and noise reducing device for an air energy heat pump comprises a compressor 1, a passive vibration damping and noise reducing mechanism and an acoustic black hole noise reducing mechanism 8 which are installed around the compressor 1, wherein the passive vibration damping and noise reducing mechanism comprises a first layer of vibration damping element 3, a transition plate 4, a second layer of vibration damping element 5, a base 6 and sound absorbing cotton 7, the sound absorbing cotton 7 is vertically arranged around the base 6, the upper part of the base 6 is provided with a plurality of second layers of vibration damping elements 5, the transition plate 4 is installed on the second layer of vibration damping element 5, the transition plate 4 is provided with a plurality of first layers of vibration damping elements 3, and the first layer of vibration damping elements 3 are connected to the compressor 1 from; the acoustic black hole noise reduction mechanism 8 is mounted on the sound absorption cotton 7 around the compressor 1.
The utility model discloses a theory of operation does: 3 vibration reduction elements 3 are arranged on three footings at the lower part of the compressor 1 to support the compressor 1 so as to reduce and eliminate the vibration force transmitted from the compressor 1 to the base 6; the first layer of vibration reduction elements 3 are upper layer vibration isolators, have a combined compression and shearing bearing mode and good impact resistance, and the compressor 1 is arranged on the transition plate 4 through the plurality of upper layer vibration isolators; the transition plate 4 is connected to a layer of damping elements 3 from below; the second-layer damping elements 5 are connected to the transition plate 4 from below, and specifically, 5 lower-layer vibration isolators serving as the second-layer damping elements 5 are installed below the transition plate 4; the base 6 is fixedly connected with the ground and the two-layer vibration damping element 5 is installed on the base 6, thereby forming a double-layer vibration isolation structure for vibration isolation of the compressor 1; the sound absorption cotton 7 is vertically and fully arranged around the base 6 in a surrounding way, so that the sound absorption effect is achieved, and in order to better absorb sound and reduce noise, the inner wall of the sound absorption cotton 7 is pasted with an acoustic black hole noise reduction mechanism 8 in a matrix arrangement or a delta arrangement or a free arrangement;
for a typical closed space, the fluctuation energy of the sound absorption cotton 7 can be transferred to the acoustic black hole noise reduction mechanism 8 through the connection ring 83; the utility model discloses the crooked ripples based on propagation in the solid medium of the noise reduction mechanism of acoustic black hole 8 is along with structure thickness according to certain power function reduction, and its corresponding phase velocity and group velocity also reduce to gather the crooked ripples of broadband in the region that structure thickness thins on certain spatial dimension, in the entrance area of the noise reduction mechanism of acoustic black hole 8, the wave propagation speed of certain frequency is unchangeable, and the wavelength can not change yet; in the acoustic black hole region 82, the propagation velocity of the wave decreases as the power exponent of the thickness decreases, the wavelength decreases, and the vibration amplitude increases; most of bending wave energy is consumed by combining the annular damping gasket 85, so that the purposes of high-efficiency energy absorption or vibration reduction and noise reduction are achieved; the acoustic black hole noise reduction mechanism 8 of the utility model adopts an epitaxial acoustic structure, the weak wave velocity of the structure occurs at the outermost end of the structure, the outer end is less constrained by the structure, the deformation is easier, and the acoustic black hole effect is easier to occur; on the other hand, for low-frequency wave energy, the low-frequency modal density of the sound-absorbing cotton 7 in a typical closed space is usually very low, vibration radiation noise is mainly distributed at a few discrete frequencies, the single acoustic black hole noise reduction mechanism 8 combines the characteristics of a Helmholtz resonance silencer, and when the plurality of acoustic black hole noise reduction mechanisms 8 are used simultaneously, the noise reduction of a plurality of frequencies can be realized through optimized design, so that the design based on the two mechanisms can realize full-frequency-band noise reduction.
Example 2
On the basis of embodiment 1, the first-layer damping element 3 is a vibration isolator or a vibration damper, and the second-layer damping element 5 is a vibration isolator or a rigid cushion block or a vibration damper, and the first-layer damping element 5 and the second-layer damping element 5 can be freely selected according to design requirements.
Example 3
On the basis of the embodiment 2, the bottom of the compressor 1 is provided with three lug buckles 2, and 3 damping elements 3 are arranged and respectively connected with three lug bolts of the three lug buckles 2; the installation is more stable and rapid.
Example 4
On the basis of embodiment 3, the two-layer vibration damping element 5 is bolted between the transition plate 4 and the base 6, and a double-layer vibration isolation structure for vibration isolation of the compressor 1 is formed.
Example 5
On the basis of embodiment 4, the acoustic black hole noise reduction mechanism 8 is a disc-shaped structure, the distance between the upper surface and the lower surface of the disc-shaped structure gradually decreases from the central axis of the disc-shaped structure to the outer edge, the disc-shaped structure includes a black hole region 82, the distance between the upper surface and the lower surface of the black hole region 82 changes in a power exponent form from the central axis to the outer edge, the upper surface of the disc-shaped structure is provided with a disc convex edge 81, the inner wall of the lower surface is provided with a connection ring 83, the connection ring 83 is connected with a resonance cavity 87, the top of the resonance cavity 87 is provided with a through hole 86, the bottom of the connection ring 83 is provided with a magic tape 84, and the connection ring 83 is made of a vibration absorption and; the full-band noise reduction is realized; the resonant cavity 87 is a cylindrical cavity.
Example 6
On the basis of the embodiment 5, the acoustic black hole noise reduction mechanism 8 and the sound absorption cotton 7 are arranged in a matrix or in a delta shape or in a free arrangement through the magic tape 84; and (4) freely arranging according to design requirements and cost budget.
Example 7
On the basis of embodiment 5, the acoustic black hole noise reduction mechanism 8 further includes an annular damping shim 85, the outer diameter of the annular damping shim 85 is the same as the outer diameter of the disc-shaped structure, and the annular damping shim 85 is adhered to the lower surface of the disc-shaped structure; the annular damping shim 85 consumes most of the bending wave energy, thereby achieving the purpose of high-efficiency energy absorption or vibration and noise reduction.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A vibration and noise reduction device for an air energy heat pump comprises a compressor (1), and a passive vibration and noise reduction mechanism and an acoustic black hole noise reduction mechanism (8) which are arranged around the compressor (1), and is characterized in that the passive vibration and noise reduction mechanism comprises a layer of vibration reduction element (3), a transition plate (4), two layers of vibration reduction elements (5), a base (6) and sound absorption cotton (7), the sound absorption cotton (7) is vertically arranged around the base (6), the upper part of the base is provided with a plurality of two layers of vibration reduction elements (5), the transition plate (4) is arranged on the two layers of vibration reduction elements (5), the plurality of layers of vibration reduction elements (3) are arranged on the transition plate (4), and the layer of vibration reduction elements (3) are connected to the compressor (1) from the lower part; the acoustic black hole noise reduction mechanism (8) is arranged on the sound absorption cotton (7) around the compressor (1).
2. The vibration/noise reduction device for an air-powered heat pump according to claim 1, wherein the first layer of vibration-damping elements (3) are vibration isolators or vibration dampers, and the second layer of vibration-damping elements (5) are vibration isolators or rigid spacers or vibration dampers.
3. A vibration and noise reduction device for an air-energy heat pump according to claim 2, characterized in that the bottom of the compressor (1) is provided with three-ear buckles (2), and one layer of vibration reduction elements (3) is provided with 3, which are respectively connected with three-ear bolts of the three-ear buckles (2).
4. A vibration and noise reducing arrangement for an air-powered heat pump according to claim 3, characterized in that the two-layer vibration reducing element (5) is bolted between the transition plate (4) and the base (6).
5. A vibration and noise reducing apparatus for an air-powered heat pump according to claim 4, the acoustic black hole noise reduction mechanism (8) is of a disc-shaped structure, the distance between the upper surface and the lower surface of the disc-shaped structure gradually decreases from the central axis of the disc-shaped structure to the outer edge, the disc-shaped structure comprises a black hole area (82), the distance between the upper surface and the lower surface of the black hole area (82) changes in a power exponent form from the central axis to the direction of the outer edge, the upper surface of the disc-shaped structure is provided with a disc convex edge (81), the inner wall of the lower surface is provided with a connecting ring (83), the connecting ring (83) is connected with a resonant cavity (87), the top of the resonant cavity (87) is provided with a through hole (86), the bottom of the connecting ring (83) is provided with a magic tape (84), and the connecting ring (83) is made of a vibration absorption and sound absorption material.
6. The vibration damping and noise reducing device for the air energy heat pump according to claim 5, wherein the acoustic black hole noise reducing mechanism (8) and the sound absorbing cotton (7) are arranged in a matrix or in a delta arrangement or in a free arrangement through magic tapes (84).
7. A vibration and noise reduction device for an air-energy heat pump according to claim 5, wherein the acoustic black hole noise reduction mechanism (8) further comprises an annular damping shim (85), the outer diameter of the annular damping shim (85) is the same as the outer diameter of the disc-shaped structure, and the annular damping shim (85) is adhered to the lower surface of the disc-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921791302.XU CN210714982U (en) | 2019-10-24 | 2019-10-24 | Vibration and noise reduction device for air energy heat pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921791302.XU CN210714982U (en) | 2019-10-24 | 2019-10-24 | Vibration and noise reduction device for air energy heat pump |
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| CN210714982U true CN210714982U (en) | 2020-06-09 |
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| CN201921791302.XU Active CN210714982U (en) | 2019-10-24 | 2019-10-24 | Vibration and noise reduction device for air energy heat pump |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114017340A (en) * | 2021-11-05 | 2022-02-08 | 广东美芝制冷设备有限公司 | Compressor and refrigerating device |
| CN114673034A (en) * | 2022-03-16 | 2022-06-28 | 西南交通大学 | Acoustic crystal vibration isolator based on acoustic black hole trap mechanism |
-
2019
- 2019-10-24 CN CN201921791302.XU patent/CN210714982U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114017340A (en) * | 2021-11-05 | 2022-02-08 | 广东美芝制冷设备有限公司 | Compressor and refrigerating device |
| CN114017340B (en) * | 2021-11-05 | 2023-08-22 | 广东美芝制冷设备有限公司 | Compressor and refrigerating device |
| CN114673034A (en) * | 2022-03-16 | 2022-06-28 | 西南交通大学 | Acoustic crystal vibration isolator based on acoustic black hole trap mechanism |
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