Shell vibration reduction structure, liquid accumulator and compressor

Abstract

The utility model provides a shell vibration damping structure, reservoir and compressor, wherein the shell vibration damping structure includes: the shell is provided with a plurality of phononic crystal unit cell components, and the plurality of phononic crystal unit cell components are arranged on the peripheral wall of the shell at intervals. According to the liquid storage device, the technical problem that in the prior art, due to the fact that a liquid storage device damping structure cannot conduct damping and noise reduction on the liquid storage device, the user experience is poor can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vibration damping, and particularly relates to a housing vibration damping structure, a liquid accumulator and a compressor. Background Technique

[0002] The four main components of a refrigeration cycle system are a compressor, a condenser, an evaporator and an expansion valve. Among them, the compressor mainly includes a compression mechanism, a housing, a driving motor and a liquid accumulator. The liquid accumulator is an important component, and it is generally connected to the main body of the compressor through a compressor suction connecting pipe and a bracket. From the installation characteristics of the liquid accumulator, its connection degree is relatively low. Therefore, when the compressor rotates at a high speed, vibrations generated by components such as its reed valve, sliding vane, and bearing, as well as vibrations caused by different air pressures between the upper and lower cavities of the motor during gas compression, are extremely likely to be transmitted to the liquid accumulator, thereby causing the liquid accumulator to vibrate violently and radiate noise outward at the same time. In addition, due to the intermittent and periodic nature of the suction process during the operation of the compressor, the liquid accumulator will generate suction noise, eddy current noise, cavity resonance noise, etc.

[0003] Facing the above problems of vibration and noise of the liquid accumulator, traditional solutions usually adopt methods such as reducing the surface area of the liquid accumulator, setting a resonance cavity, adding a counterweight, or optimizing the connecting bracket. The above means of reducing vibration and noise all have certain limitations, such as high manufacturing cost, complex structure, inability to achieve engineering applications, poor noise reduction effect, etc.

[0004] Since the liquid accumulator in the prior art uses methods such as reducing the surface area of the liquid accumulator, setting a resonance cavity, adding a counterweight, or optimizing the connecting bracket to reduce vibration and noise, it cannot effectively reduce the suction noise, eddy current noise, cavity resonance noise, etc. of the liquid accumulator, resulting in technical problems such as easy damage to the liquid accumulator and poor user experience. Therefore, the utility model researches and designs a housing vibration damping structure, a liquid accumulator and a compressor. Content of the Utility Model

[0005] Therefore, the utility model provides a housing vibration damping structure, a liquid accumulator and a compressor, which can solve the technical problem that the vibration damping structure of the liquid accumulator in the prior art cannot effectively reduce vibration and noise of the liquid accumulator, resulting in poor user experience.

[0006] To solve the above problems, the utility model provides a housing vibration damping structure, including: a housing, on which a plurality of phononic crystal unit cell components are arranged, and the plurality of phononic crystal unit cell components are arranged at intervals on the outer peripheral wall of the housing.

[0007] In some embodiments, the phononic crystal unit cell component includes an elastic member and a scatterer. Taking the housing as a phononic crystal substrate, one end of the elastic member is arranged on the phononic crystal substrate, and the scatterer is arranged at the other end.

[0008] In some embodiments, the elastic member is made of silicone rubber, the scatterer is made of steel, and the elastic member and the scatterer are cylindrical.

[0009] In some embodiments, the elastic member and the scatterer have the same radius. The radius of the elastic member is 15 mm - 30 mm, and the height of the elastic member is 1 mm - 15 mm; the radius of the scatterer is 15 mm - 30 mm, and the height of the scatterer is 1 mm - 15 mm.

[0010] In some embodiments, the housing has a plurality of lattices, and the plurality of lattices are connected in sequence. The lattices are rectangular, and the phonon crystal unit cell assemblies are arranged at the four corners of each lattice.

[0011] In some embodiments, any side length of the lattice is not less than 30 mm.

[0012] In some embodiments, along the circumferential direction of the housing, a plurality of the phonon crystal unit cell assemblies are arranged at intervals on the outer peripheral wall of the housing, and the distance between two adjacent phonon crystal unit cell assemblies is the same, and / or, along the axial direction of the housing, a plurality of the phonon crystal unit cell assemblies are arranged at intervals on the outer peripheral wall of the housing, and the distance between the plurality of phonon crystal unit cell assemblies arranged at intervals on the housing is the same.

[0013] In some embodiments, a plurality of grooves are provided on the housing. The cross-section of the groove is circular, and the longitudinal section of the groove is arc-shaped. The phonon crystal unit cell assembly is arranged at the center of the bottom of the groove.

[0014] The present invention also provides a liquid storage device, which includes the aforementioned housing vibration damping structure. An upper end cover is provided at one end of the housing, and a lower end cover is provided at the other end. An air suction pipe is provided on the upper end cover, and an air inlet pipe is provided on the lower end cover.

[0015] The present invention also provides a compressor, which includes the aforementioned housing vibration damping structure.

[0016] A housing vibration damping structure, a liquid storage device and a compressor provided by the present invention have the following beneficial effects:

[0017] By arranging a plurality of phononic crystal unit cell components on the housing, the vibration response is effectively reduced by using the phononic crystal and the acoustic black hole structure. At the same time, the broadband noise problem generated by the liquid reservoir is solved by using the band gap theory of the phononic crystal, and high-efficiency noise reduction can be achieved in the frequency band of 0-2000 Hz, and the sound transmission loss is broken through in multiple frequency bands, breaking the "mass law" of traditional sound insulation materials. This utility model can use the acoustic black hole structure to "localize" the vibration of the liquid distributor cylinder at the phononic crystal, and then use the band gap characteristics of the phononic crystal to achieve vibration reduction and sound insulation. In addition, compared with the traditional liquid reservoir cylinder, this structure increases the weight of the liquid reservoir to a certain extent, and can also play a vibration reduction effect. Brief Description of the Drawings

[0018] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. The drawings in the following description are only exemplary. For those of ordinary skill in the art, without creative efforts, other implementation drawings can be obtained by extending according to the provided drawings.

[0019] Figure 1 is the assembly structure diagram of the housing vibration reduction structure of the present utility model;

[0020] Figure 2 is the top view of the phononic crystal unit cell component in the housing vibration reduction structure of the present utility model;

[0021] Figure 3 is the side view of the phononic crystal unit cell component in the housing vibration reduction structure of the present utility model;

[0022] Figure 4 is the assembly structure diagram of the housing vibration reduction structure of another embodiment of the present utility model;

[0023] Figure 5 is the top view of the phononic crystal unit cell component in the housing vibration reduction structure of another embodiment of the present utility model;

[0024] Figure 6 is the side view of the phononic crystal unit cell component in the housing vibration reduction structure of another embodiment of the present utility model;

[0025] Figure 7 is the unfolded schematic diagram of the housing in the housing vibration reduction structure of the present utility model;

[0026] Figure 8 is the sound transmission loss comparison curve of the housing in the housing vibration reduction structure of the present utility model.

[0027] The reference numerals are:

[0028] 1. Housing; 2. Phononic crystal unit cell component; 3. Elastic member; 4. Scatterer; 5. Upper end cap; 6. Lower end cap; 7. Suction pipe; 8. Inlet pipe; 9. Lattice; 10. Groove. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way constitutes a limitation on the present invention and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationships shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary explanations, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present invention; the orientation words "inner, outer" refer to the inside and outside relative to the contour of each component itself.

[0031] For the convenience of description, spatial relative terms such as "above...", "above...", "on the upper surface of...", "above" can be used here to describe the spatial positional relationships between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the figure for the device. For example, if the device in the figure is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures" afterwards. Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding explanations are made for the spatial relative descriptions used here.

[0032] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without otherwise stating, the above words have no special meanings. Therefore, it cannot be understood as a limitation on the protection scope of the present invention.

[0033] Refer to the combination of Figure 1-8 As shown, according to an embodiment of the present invention, there is provided a housing vibration damping structure, which is characterized in that it includes: a housing 1, and a plurality of phononic crystal unit cell components 2 are arranged on the housing 1, and the plurality of phononic crystal unit cell components 2 are arranged at intervals on the outer peripheral wall of the housing 1. In this technical solution, by arranging a plurality of phononic crystal unit cell components 2 on the housing 1, the vibration response is effectively reduced by using the phononic crystal and the acoustic black hole structure. At the same time, the broadband noise problem generated by the liquid reservoir is solved by using the bandgap theory of the phononic crystal, and efficient noise reduction can be achieved in the frequency band of 0-2000 Hz, and the sound transmission loss is increased in multiple frequency bands, breaking through the "mass law" of traditional sound insulation materials. The sound transmission loss is the sound insulation amount. This utility model can use the acoustic black hole structure to "localize" the vibration of the liquid distributor cylinder at the phononic crystal, and then use the bandgap characteristics of the phononic crystal to achieve vibration damping and sound insulation. In addition, compared with the traditional liquid reservoir cylinder, the housing vibration damping structure of this utility model increases the housing weight to a certain extent and can also achieve a vibration damping effect.

[0034] The related technology discloses a shock absorber, a compressor assembly, its control method and a refrigeration device. This technology reduces the radiation noise generated by the vibration of the compressor by setting shock absorbing elements and using the vibration of the shock absorbing elements to absorb the energy generated by the vibration of the compressor. And at least two shock absorbing elements with different sizes and masses are set, so that the shock absorbing frequencies of the shock absorbing elements are different. In this way, the shock absorbing effect can be achieved in multiple frequency bands, and the effective frequency range of shock absorption is broadened, thus achieving the purpose of broadband shock absorption. However, this structure is relatively complex, difficult to realize engineering application, and the shock absorption and noise reduction effect is limited.

[0035] The related technology discloses a liquid reservoir, a compressor assembly and a refrigeration device. In this technology, the shock absorbing element is installed in the housing. The shock absorbing element includes a counterweight block and a substrate arranged circumferentially around the counterweight block. The substrate is fixedly connected to the housing. The substrate is provided with a through groove, the through groove extends circumferentially along the counterweight block and penetrates along the thickness direction of the substrate. The counterweight block is provided with a through hole, and the diameter of the through hole is larger than the outer diameter of the exhaust pipe. When the vibration wave passes through the shock absorbing element, the vibration wave is offset by the relative movement of the counterweight block with respect to the substrate, thereby reducing the vibration of the liquid reservoir and reducing the noise. However, this structure is not only complex, but also has a narrow shock absorption frequency band, and the noise reduction effect is not obvious.

[0036] The related technology discloses a separator and a liquid reservoir. In this technology, two semi-circular cavities are provided on the separator of the liquid reservoir, which can extend the flow path of the refrigerant in the liquid reservoir, thereby reducing the refrigerant flow noise. In addition, the cavities change the cavity modal frequency in the liquid reservoir and improve the transmission loss of the noise in a specific frequency band in the liquid reservoir. However, before and after installing the separator with two cavities, the change in the transmission loss curve of the liquid reservoir is small. To significantly increase the noise reduction amount, multiple cavities may be required, resulting in a relatively high manufacturing cost.

[0037] Traditional solutions usually include reducing the surface area of the liquid reservoir, setting resonance cavities, adding counterweights, or optimizing connection brackets, etc. All of the above means of reducing vibration and noise have certain limitations. The proposal of the phonon crystal and acoustic black hole theories is expected to provide new solutions to the urgent problem of vibration and noise of the liquid reservoir. Due to the periodicity of the internal medium of the phonon crystal, elastic waves can generate elastic wave band gaps when propagating in it. Therefore, the band gap characteristics of the phonon crystal can be used to effectively suppress vibration and noise within the band gap frequency range. The acoustic black hole can "localize" or "converge" the elastic waves to a point, and cooperate with the phonon crystal structure at this "localized" point to achieve vibration and noise control.

[0038] On the one hand, the housing vibration damping structure of the present utility model can effectively reduce its vibration response by using the phonon crystal and acoustic black hole structures. At the same time, it uses the band gap theory of the phonon crystal to solve the broadband noise problem generated by the liquid reservoir, can achieve high-efficiency noise reduction in the frequency band of 0 - 2000 Hz, and break through the "mass law" of traditional sound insulation materials in terms of transmission loss and sound insulation in multiple frequency bands. The housing vibration damping structure of the present utility model can use the acoustic black hole structure to "localize" the vibration of the liquid distributor cylinder at the phonon crystal, and then utilize the band gap characteristics of the phonon crystal to achieve vibration and noise reduction. In addition, compared with the traditional liquid reservoir cylinder, the housing vibration damping structure of the present utility model increases the weight of the liquid reservoir to a certain extent, which can also play a role in vibration damping.

[0039] In some embodiments, the phononic crystal unit cell assembly 2 includes an elastic member 3 and a scatterer 4. Taking the housing 1 as the phononic crystal substrate, one end of the elastic member 3 is disposed on the phononic crystal substrate, and the scatterer 4 is disposed at the other end. In this technical solution, a counterbore can be formed in the housing 1, and then the elastic member 3 is inserted therein, and the scatterer 4 is fixed at the top end of the elastic member 3; or without forming a counterbore, the elastic member 3 is directly adhered to the housing 1, and the scatterer 4 is fixed at the top end of the elastic member 3. The housing 1 is made of cold-rolled steel. Due to the adoption of the attached phononic crystal liquid reservoir structure with the function of vibration reduction and sound insulation of the present invention, compared with the traditional liquid reservoir, the noise in the 0 - 2000 Hz frequency band of the liquid reservoir is effectively reduced, and the high-efficiency sound insulation in the target frequency band can be achieved by optimizing the design of the phononic crystal unit cell structure; in addition, an acoustic black hole type phononic crystal substrate is further designed to realize the "convergence" of the vibration of the liquid reservoir cylinder to one point, that is, the vibration is "localized" at the center of the phononic crystal substrate, and then the phononic crystal structure is used for high-efficiency vibration reduction.

[0040] The above-mentioned "convergence" refers to the convergence of the vibration on the phononic crystal unit cell structure to the center of the two-dimensional acoustic black hole thin plate, rather than the convergence of the vibration on the entire liquid reservoir cylinder to this point.

[0041] The acoustic black hole ABH - Acoustic Black Hole is an acoustic analogy of the black hole concept in astrophysics. It is a structure that forms a converging effect on flexural waves through the change of geometric parameters or material properties. In the absolutely ideal case, the flexural wave velocity gradually decreases to zero in the acoustic black hole region.

[0042] Vibration is essentially a standing wave generated by multiple reflections of elastic waves at the boundaries in the structure, and noise is the wave energy radiated into the surrounding space during the vibration of the structure.

[0043] In some embodiments, the elastic member 3 is made of silicone rubber, the scatterer 4 is made of steel, and the elastic member 3 and the scatterer 4 are cylindrical. In this technical solution, the scatterer 4 can also adopt other structures, such as a cube or an annular cylinder, etc.; in addition, the material of the scatterer 4 can also be changed to other materials, and it is required that the elastic modulus of this material is greater than that of silicone rubber.

[0044] In some embodiments, the elastic member 3 and the scatterer 4 have the same radius. The radius of the elastic member 3 is 15 mm - 30 mm, and the height of the elastic member 3 is 1 mm - 15 mm; the radius of the scatterer 4 is 15 mm - 30 mm, and the height of the scatterer 4 is 1 mm - 15 mm.

[0045] The starting frequency and the ending frequency of the band gap of the locally resonant phononic crystal are calculated according to the following formula:

[0046]

[0047] In the formula, m1 is the mass of the scatterer, m2 is the equivalent mass of the matrix, k is the equivalent stiffness of the coating layer, f1 is the starting frequency, and f2 is the ending frequency.

[0048] The sound transmission loss (sound insulation quantity) of the phononic crystal structure is calculated according to the following formula:

[0049]

[0050] In the formula, W in is the incident sound power, and W out is the transmitted sound power.

[0051] According to the above formula, for an attached phononic crystal unit cell structure with vibration and sound insulation functions of the present utility model, its sound transmission loss is numerically calculated, and the result is shown in the following sound transmission loss curve. The geometric parameters of the phononic crystal unit cell component 1 and component 2 are shown in Table 1 and Table 2 below, and their material parameters are shown in Table 3 below.

[0052] Table 1 Geometric parameters of the phononic crystal unit cell component 1 (unit: mm)

[0053]

[0054]

[0055] Table 2 Geometric parameters of the phononic crystal unit cell component 2 (unit: mm)

[0056] Lattice constant a 50 Substrate thickness t 2 Radius of silicone rubber layer r1 10 Height of silicone rubber layer h1 5 Radius of steel scatterer r2 10 Height of steel scatterer h2 4

[0057] Table 3 Material parameters of the unit cell phononic crystal model

[0058]

[0059] Combined with the above table and the attached Figure 8 As shown, preferably, the radius of the elastic member 3 is 20.0 mm, and the height of the elastic member 3 is 5.0 mm; the radius of the scatterer 4 is 20.0 mm, and the height of the scatterer 4 is 4.0 mm. Within this numerical range, the housing vibration damping structure of the present utility model can achieve high-efficiency noise reduction in the frequency band of 0 - 2000 Hz, and its sound insulation performance breaks through the "mass law" of traditional sound insulation materials in multiple frequency bands.

[0060] In some embodiments, with reference to Figure 7As shown, the housing 1 has a plurality of lattices 9, and the plurality of lattices 9 are connected in sequence. The lattices 9 are rectangular, and the phonon crystal unit cell components 2 are arranged at the four corners of each lattice 9. Further, any side length of the lattice 9 is not less than 30 mm. In this technical solution, the housing 1 is composed of the phonon crystal unit cell components 2 arranged periodically. Here, the periodic arrangement means equidistant arrangement in the axial direction and circumferential direction of the housing 1. The phonon crystal unit cell components 2 use the cylindrical wall of the housing 1 as the phonon crystal substrate, and a structure composed of a silicone rubber cylinder and a steel cylinder is periodically attached to its outer surface. Preferably, the lattice 9 is square, and any side length of the lattice 9 is 50.0 mm. Specifically, according to the frequency range in which the liquid storage container has a large vibration response, the lattice constant of the phonon crystal unit cell component, and the radii and heights of the silicone rubber cylinder and the steel cylinder are set. The lattice constant refers to the side length of the lattice 9; changes in the above parameters will affect the working frequency band of the phonon crystal. Therefore, the size of each block should be divided according to the actual vibration response frequency, and then consider how many blocks can be divided on the entire area of the liquid storage container cylinder.

[0061] In some embodiments, along the circumferential direction of the housing 1, a plurality of the phonon crystal unit cell components 2 are arranged at intervals on the outer peripheral wall of the housing 1, and the distance between two adjacent phonon crystal unit cell components 2 is the same, and / or, in the axial direction of the housing 1, a plurality of the phonon crystal unit cell components 2 are arranged at intervals on the outer peripheral wall of the housing 1, and the distances between the plurality of phonon crystal unit cell components 2 arranged at intervals on the housing 1 are the same. In this technical solution, the phonon crystal unit cell component 2 is composed of three different structures, namely, a part of the cylindrical wall of the housing 1, which means a part of the cylindrical wall rather than the entire cylindrical wall. That is, the cylindrical wall needs to be periodically divided into a plurality of blocks, a silicone rubber cylinder is pasted on each block, and then a steel cylinder, a silicone rubber cylinder and a steel cylinder are pasted on the silicone rubber cylinder. The unit cell components are arranged periodically to form a phonon crystal plate. The steel cylinder and the silicone rubber cylinder together form a "mass-spring" system. This system has a resonance frequency. Under the excitation of elastic waves at a specific frequency, that is, the resonance frequency of the "mass-spring" system, the scatterer resonates and interacts with the traveling wave of the elastic wavelength in the matrix, thereby suppressing the propagation of elastic waves and achieving the effect of suppressing vibration. A plurality of phonon crystal unit cell components are periodically arranged on the housing 1. Each unit cell component includes a silicone rubber cylinder and a steel cylinder on the silicone rubber cylinder, which together form a "mass-spring" system. The "mass" corresponds to the steel cylinder, and the "spring" corresponds to the soft silicone rubber cylinder.

[0062] In some embodiments, with reference to Figures 4 to 6As shown in the figure, a plurality of grooves 10 are provided on the housing 1. The cross-section of the groove 10 is circular, and the longitudinal section of the groove 10 is arc-shaped. The phononic crystal unit cell assembly 2 is arranged at the center of the bottom of the groove 10. In this technical solution, the vibration on the phononic crystal unit cell assembly through the groove 10 can converge towards the center of the two-dimensional acoustic black hole thin plate, that is, the vibration is "localized" at the center of the phononic crystal substrate, and then the phononic crystal structure is used for vibration reduction to further reduce the vibration of the liquid storage container. The convergence here does not mean that the vibration on the entire liquid storage container cylinder converges towards this point. The thickness of the housing 1 changes according to a power exponent from the outside to the inside, that is, it satisfies h(x) = εx n When n ≥ 2, the bending wave number approaches infinity, and the group velocity and phase velocity approach 0, that is, no reflection will be formed, that is, the vibration "convergence" is achieved.

[0063] The present utility model also provides a liquid storage container, including the above-mentioned housing vibration reduction structure. One end of the housing is provided with an upper end cover 5, and the other end is provided with a lower end cover 6. An air suction pipe 7 is provided on the upper end cover 5, and an air inlet pipe 8 is provided on the lower end cover 7. A phononic crystal is a periodic structure or composite material composed of two or more materials. Due to the periodicity of the internal medium of the phononic crystal, elastic waves can generate elastic wave band gaps when propagating in it, so the band gap characteristics of the phononic crystal can be used to effectively suppress vibration and noise within the band gap frequency range.

[0064] The liquid storage container of the present utility model is a locally resonant phononic crystal. The local resonance mechanism believes that under the excitation of elastic waves at a specific frequency, each scatterer generates resonance and interacts with the long-wavelength traveling wave of the elastic wave, thereby suppressing its propagation. Combining with the local resonance band gap theory of phononic crystals, it can be known that when the sound wave approaches a certain natural frequency of the oscillator, the resultant force of the external excitation force on the matrix and the reaction force from the oscillator is zero, and it remains stationary, and the sound wave will not be able to propagate, resulting in the appearance of a sound insulation peak. The matrix refers to the wall of the liquid storage container; when the sound wave frequency continues to increase, the reaction force of the oscillator on the matrix weakens, and the vibration mode of the matrix is activated, and the sound wave can continue to propagate in the phononic crystal structure, and at this time, a sound insulation valley appears.

[0065] The liquid storage container of the present utility model has band gap characteristics: under the action of the internal periodic structure of the phononic crystal, when elastic waves propagate in the phononic crystal, due to the enhanced coupling effect between the incident wave, reflected wave and transmitted wave, a special dispersion relationship is formed. The frequency range between the dispersion curves is called the band gap because elastic waves cannot propagate, and it is also called the wave stop band, forbidden band or stop band.

[0066] Due to the periodicity of the internal medium of the phononic crystal, that is, the periodicity of the material - the Bragg scattering mechanism; the periodicity of the structure - the local resonance mechanism, elastic waves can generate elastic wave bandgaps when propagating in it. Therefore, the bandgap characteristics of the phononic crystal can be used to effectively suppress vibrations and noises within the bandgap frequency range.

[0067] The liquid storage device of the present utility model utilizes the local resonance mechanism. The scatterer 4 and the elastic member 3 together form a "mass-spring" system. This system has a resonance frequency. Under the excitation of elastic waves at a specific frequency, which is the resonance frequency of the "mass-spring" system, the scatterer resonates and interacts with the long-wavelength traveling wave of the elastic wave in the matrix to form a bandgap, thereby suppressing the propagation of elastic waves and achieving the effect of suppressing vibrations.

[0068] For the attached phononic crystal liquid storage device structure with vibration and noise reduction functions provided by the embodiments of the present utility model, the size and material of the phononic crystal unit cell can be changed, so that the frequencies at which the peaks and valleys of the sound transmission loss curve occur change. At the same time, by increasing or decreasing the number of phononic crystal unit cells or changing the material of its scatterer, the weight of the liquid storage device can be increased, further enhancing the vibration reduction effect.

[0069] The present utility model also provides a compressor, including the above-mentioned housing vibration reduction structure.

[0070] The housing vibration reduction structure of the present utility model can also be used for the compressor housing to achieve efficient vibration reduction and noise reduction of the compressor housing.

[0071] It is easy for those skilled in the art to understand that, on the premise of no conflict, the advantageous technical features of the above various methods can be freely combined and superimposed.

[0072] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model. The above is only the preferred implementation manner of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and variations can still be made, and these improvements and variations should also be regarded as within the protection scope of the present utility model.

Claims

1. A housing vibration damping structure, characterized in that: Comprising: A housing (1), on which a plurality of phononic crystal unit cell components (2) are provided, and the plurality of phononic crystal unit cell components (2) are arranged at intervals on the outer peripheral wall of the housing (1); The phononic crystal unit cell component (2) includes an elastic member (3) and a scatterer (4). Taking the housing (1) as a phononic crystal substrate, one end of the elastic member (3) is arranged on the phononic crystal substrate, and the scatterer (4) is arranged at the other end; A plurality of grooves (10) are provided on the housing (1), the cross-section of the groove (10) is circular, the longitudinal section of the groove (10) is arc-shaped, and the phononic crystal unit cell component (2) is arranged at the center of the bottom of the groove (10).

2. The housing vibration damping structure according to claim 1, characterized in that: The elastic member (3) is made of silicone rubber, the scatterer (4) is made of steel, and the elastic member (3) and the scatterer (4) are cylindrical.

3. The housing vibration damping structure according to claim 2, wherein: The elastic member (3) and the scatterer (4) have the same radius. The radius of the elastic member (3) is 15 mm - 30 mm, and the height of the elastic member (3) is 1 mm - 15 mm; the radius of the scatterer (4) is 15 mm - 30 mm, and the height of the scatterer (4) is 1 mm - 15 mm.

4. The housing vibration damping structure according to claim 1, wherein: A plurality of lattices (9) are provided on the housing (1), the plurality of lattices (9) are connected in sequence, the lattice (9) is rectangular, and the phononic crystal unit cell component (2) is arranged at each of the four corners of each lattice (9).

5. The housing vibration damping structure according to claim 4, characterized in that: Any side length of the lattice (9) is not less than 30 mm.

6. The housing vibration damping structure according to claim 1, characterized in that: Along the circumferential direction of the housing (1), the spacing between two adjacent phononic crystal unit cell components (2) is the same, and / or, along the axial direction of the housing (1), the intervals at which the plurality of phononic crystal unit cell components (2) are arranged at intervals on the housing (1) are the same.

7. A liquid reservoir, characterized in that, Comprising the housing vibration damping structure according to any one of claims 1 - 6, an upper end cover (5) is provided at one end of the housing, a lower end cover (6) is provided at the other end, an air suction pipe (7) is provided on the upper end cover (5), and an air inlet pipe (8) is provided on the lower end cover (6).

8. A compressor, characterized in that, Comprising the housing vibration damping structure according to any one of claims 1 - 6.

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