Shell vibration reduction structure, liquid accumulator and compressor

Abstract

The invention provides a shell vibration reduction structure, a liquid accumulator and a compressor, the shell vibration reduction structure comprises a shell, a plurality of photonic crystal unit cell assemblies are arranged on the shell, and the multiple photonic crystal unit cell assemblies 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, a liquid storage device vibration reduction structure cannot conduct vibration reduction and noise reduction on the liquid storage device, and consequently the user experience is poor can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of vibration reduction, and in particular relates to a shell vibration reduction structure, a liquid reservoir and a compressor. Background Art

[0002] The four main components of the refrigeration cycle system are the compressor, condenser, evaporator and expansion valve. Among them, the compressor mainly includes four parts: compression mechanism, shell, drive motor and liquid reservoir. The liquid reservoir is an important component, which is generally connected to the main part of the compressor through the compressor suction connection pipe and bracket. From the installation characteristics of the liquid reservoir, it can be seen that its connection degree is relatively low. Therefore, when the compressor rotates at high speed, the vibrations generated by its reed valve, slide, bearing and other components, as well as the vibrations caused by the different air pressures between the upper and lower chambers of the motor when compressing the gas, can be easily transmitted to the liquid reservoir, causing the liquid reservoir to vibrate violently and radiate noise outward at the same time. In addition, since the suction process of the compressor during operation is intermittent and periodic, the liquid reservoir will produce suction noise, eddy current noise and cavity resonance noise.

[0003] In the face of the vibration and noise problems of the above liquid reservoirs, traditional solutions usually include reducing the surface area of ​​the liquid reservoir, setting up a resonance cavity, adding counterweights, or optimizing connecting brackets. The above methods of reducing vibration and noise all have certain limitations, such as high manufacturing costs, complex structures, inability to achieve engineering applications, and poor noise reduction effects.

[0004] Since the liquid reservoir in the prior art adopts methods such as reducing the surface area of ​​the liquid reservoir, setting a resonance cavity, adding a counterweight or optimizing the connecting bracket to reduce vibration and noise, it is unable to effectively reduce the suction noise, eddy current noise and cavity resonance noise of the liquid reservoir, resulting in technical problems such as easy damage of the liquid reservoir and poor user experience. Therefore, the present invention studies and designs a shell vibration reduction structure, a liquid reservoir and a compressor. Summary of the invention

[0005] Therefore, the present invention provides a shell vibration reduction structure, a liquid reservoir and a compressor, which can solve the technical problem in the prior art that the liquid reservoir vibration reduction structure cannot reduce the vibration and noise of the liquid reservoir, resulting in poor user experience.

[0006] In order to solve the above problems, the present invention provides a shell vibration reduction structure, including: a shell, on which a plurality of phononic crystal unit cell components are arranged at intervals on the outer peripheral wall of the shell.

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

[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 radius of the elastic member and the scatterer are the same, the radius of the elastic member is 15mm-30mm, and the height of the elastic member is 1mm-15mm; the radius of the scatterer is 15mm-30mm, and the height of the scatterer is 1mm-15mm.

[0010] In some embodiments, the shell has a plurality of lattices, the plurality of lattices are sequentially connected, the lattices are rectangular, and the phononic crystal unit cell components are arranged at the four corners of each of the lattices.

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

[0012] In some embodiments, along the circumference of the shell, a plurality of the phononic crystal unit cell assemblies are arranged at intervals on the outer peripheral wall of the shell, and the spacing between two connected phononic crystal unit cell assemblies is the same, and / or, in the axial direction of the shell, a plurality of the phononic crystal unit cell assemblies are arranged at intervals on the outer peripheral wall of the shell, and the spacing between two connected phononic crystal unit cell assemblies is the same.

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

[0014] The present invention also provides a liquid storage device, which includes the aforementioned shell vibration reduction structure, wherein an upper end cover is provided at one end of the shell, and a lower end cover is provided at the other end, an air intake pipe is provided on the upper end cover, and an air intake pipe is provided on the lower end cover.

[0015] The present invention also provides a compressor, which comprises the aforementioned shell vibration reduction structure.

[0016] The shell vibration reduction structure, liquid reservoir and compressor provided by the present invention have the following beneficial effects:

[0017] By arranging multiple phononic crystal unit cell components on the shell, the phononic crystal and acoustic black hole structure are used to effectively reduce its vibration response. At the same time, the band gap theory of the phononic crystal is used to solve the broadband noise problem generated by the liquid reservoir, which can achieve efficient noise reduction in the 0-2000Hz frequency band, and reduce its sound transmission loss in multiple frequency bands, breaking through the "mass law" of traditional sound insulation materials. This invention can use the acoustic black hole structure to "localize" the vibration of the dispenser cylinder to 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 implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. The drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] Figure 1 It is an assembly structure diagram of the housing vibration reduction structure of the present invention;

[0020] Figure 2 It is a top view of a phononic crystal unit cell assembly in the shell vibration reduction structure of the present invention;

[0021] Figure 3 It is a side view of a phononic crystal unit cell component in the shell vibration reduction structure of the present invention;

[0022] Figure 4 is an assembly structure diagram of a housing vibration reduction structure according to another embodiment of the present invention;

[0023] Figure 5 is a top view of a phononic crystal unit cell assembly in a shell vibration reduction structure according to another embodiment of the present invention;

[0024] Figure 6 is a side view of a phononic crystal unit cell assembly in a shell vibration reduction structure according to another embodiment of the present invention;

[0025] Figure 7 is a schematic diagram of the expansion of the shell in the shell vibration reduction structure of the present invention;

[0026] Figure 8 It is a comparison curve of the sound transmission loss of the shell in the shell vibration reduction structure of the present invention.

[0027] The accompanying drawings are marked as follows:

[0028] 1. Shell; 2. Phononic crystal unit cell assembly; 3. Elastic part; 4. Scatterer; 5. Upper end cover; 6. Lower end cover; 7. Intake pipe; 8. Intake pipe; 9. Lattice; 10. Groove. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0031] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings 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". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0032] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0033] See also Figure 1-8As shown, according to an embodiment of the present invention, 1. a shell vibration reduction structure is provided, characterized in that: it comprises: a shell 1, a plurality of phononic crystal unit cell components 2 are arranged on the shell 1, and the plurality of phononic crystal unit cell components 2 are arranged at intervals on the outer peripheral wall of the shell 1. In this technical solution, by arranging a plurality of phononic crystal unit cell components 2 on the shell 1, the phononic crystal and the acoustic black hole structure are used to effectively reduce its vibration response. At the same time, the band gap theory of the phononic crystal is used to solve the problem of broadband noise generated by the liquid reservoir, and it can achieve efficient noise reduction in the 0-2000Hz frequency band, and reduce its sound transmission loss in multiple frequency bands, breaking through the "mass law" of traditional sound insulation materials. The sound transmission loss is the sound insulation. This invention can use the acoustic black hole structure to "localize" the vibration of the dispenser 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, the shell vibration reduction structure of the present invention increases the weight of the shell to a certain extent, and can also play a vibration reduction effect.

[0034] Related technologies disclose a vibration absorber, a compressor assembly, a control method thereof, and a refrigeration device. The technology reduces the radiated noise generated by the vibration of the compressor by setting a vibration-damping element and using the vibration of the vibration-damping element to absorb the energy generated by the vibration of the compressor. At least two vibration-damping elements of different sizes and masses are set so that the vibration-damping elements have different vibration-damping frequencies. In this way, the vibration-absorbing effect can be achieved in multiple frequency bands, and the effective frequency range of vibration-damping is widened, thereby achieving the purpose of wide-band vibration-damping. However, the structure is relatively complex, difficult to implement engineering applications, and the vibration-damping and noise-reducing effects are limited.

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

[0036] The related art discloses an isolator and a liquid reservoir, in which two semicircular cavities are arranged on the partition 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 cavity changes the cavity modal frequency in the liquid reservoir, and improves the transmission loss of the noise in a specific frequency band in the liquid reservoir. However, before and after the installation of the isolator with two cavities, the change in the transmission loss curve of the liquid reservoir is small. If the sound reduction is to be significantly improved, multiple cavities may be required, resulting in high manufacturing costs.

[0037] Traditional solutions usually involve reducing the surface area of ​​the reservoir, setting up a resonance cavity, adding counterweights, or optimizing the connecting brackets. All of the above methods of reducing vibration and noise have certain limitations. The introduction of the phononic crystal and acoustic black hole theory is expected to provide new solutions to the reservoir vibration and noise problems that are currently in urgent need of resolution. Due to the periodicity of the medium inside the phononic crystal, elastic waves can generate elastic wave band gaps when propagating in it. Therefore, the band gap characteristics of the phononic crystal can be used to effectively suppress vibration and noise within the band gap frequency range; and the acoustic black hole can "localize" or "converge" the elastic waves to a point, and cooperate with the phononic crystal structure at this "localized" point to achieve vibration and noise control.

[0038] On the one hand, the shell vibration reduction structure of the present invention can utilize phononic crystals and acoustic black hole structures to effectively reduce its vibration response. At the same time, the band gap theory of phononic crystals is used to solve the broadband noise problem generated by the liquid reservoir, and can achieve efficient noise reduction in the 0-2000Hz frequency band, and make its sound transmission loss and sound insulation break through the "mass law" of traditional sound insulation materials in multiple frequency bands. The shell vibration reduction structure of the present invention can utilize the acoustic black hole structure to "localize" the vibration of the dispenser cylinder at the phononic crystal, and then utilize the band gap characteristics of the phononic crystal to achieve vibration reduction and sound insulation. In addition, compared with the traditional liquid reservoir cylinder, the shell vibration reduction structure of the present invention increases the weight of the liquid reservoir to a certain extent, and can also achieve a vibration reduction effect.

[0039] In some embodiments, the phononic crystal unit cell assembly 2 includes an elastic member 3 and a scatterer 4, and the shell 1 is used as a phononic crystal substrate, one end of the elastic member 3 is arranged on the phononic crystal substrate, and the other end is arranged with the scatterer 4. In this technical solution, a countersink can be opened in the shell 1, and then the elastic member 3 is inserted into it, and then the scatterer 4 is fixed at the top of the elastic member 3; or the countersink is not opened, and the elastic member 3 is directly adhered to the shell 1, and then the scatterer 4 is fixed at the top of the elastic member 3. The shell 1 is made of cold-rolled steel plate. Due to the use of the attached phononic crystal reservoir structure with vibration reduction and sound insulation of the present invention, compared with the traditional reservoir, the noise in the 0-2000Hz frequency band of the reservoir is effectively reduced, and the phononic crystal unit cell structure can be optimized to achieve efficient sound insulation in the target frequency band; in addition, an acoustic black hole type phononic crystal substrate is further designed to achieve the "convergence" of the reservoir cylinder vibration to one point, that is, the vibration is "localized" in the center of the phononic crystal substrate, and then the phononic crystal structure is used for efficient vibration reduction.

[0040] The above-mentioned "convergence" refers to the convergence of vibrations on the unit cell structure of the phononic crystal to the center of the two-dimensional acoustic black hole plate, and does not mean that the vibrations on the entire liquid reservoir cylinder converge to this point.

[0041] Acoustic Black Hole ABH-Acoustic Black Hole is the acoustic analogy of the concept of black hole in astrophysics. It is a structure that has a convergence effect on bending waves through changes in geometric parameters or material properties. Under absolutely ideal conditions, the speed of bending waves gradually decreases to zero in the acoustic black hole region.

[0042] Vibration is essentially a standing wave caused by multiple reflections of elastic waves at the boundaries of 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 the elastic modulus of the material is required to be greater than that of silicone rubber.

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

[0045] The band gap start frequency and end frequency of the local resonance phononic crystal are calculated according to the following formula:

[0046]

[0047] In the formula, m 1 is the mass of the scatterer, m 2 is the equivalent mass of the substrate, k is the equivalent stiffness of the coating, f1 is the starting frequency, and f2 is the ending frequency.

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

[0049]

[0050] Where W in is the incident sound power, W out is the transmitted sound power.

[0051] According to the above formula, the sound transmission loss of the attached phononic crystal unit cell structure with vibration reduction and sound insulation of the present invention is numerically calculated, and the result is shown in the sound transmission loss curve in the figure below. The geometric parameters of the phononic crystal unit cell component 1 and component 2 are shown in Tables 1 and 2 below, and the material parameters are shown in Table 3 below.

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

[0053] Lattice constant a 50 Substrate thickness t 2 Silicone rubber layer radius r1 20 Silicone rubber layer height h1 5 Steel Scatter Radius r2 20 Steel diffuser height h2 4

[0054] Table 2 Geometric parameters of phononic crystal unit cell component 2 (unit: mm)

[0055]

[0056]

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

[0058]

[0059] Combined with the above table and 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 shell vibration reduction structure of the present invention can achieve efficient noise reduction in the 0-2000 Hz frequency band, and its sound insulation performance in multiple frequency bands breaks through the "quality law" of traditional sound insulation materials.

[0060] In some embodiments, in combination with Figure 7 As shown, the shell 1 has a plurality of lattices 9, which are connected in sequence, and the lattices 9 are rectangular, and the phononic crystal unit cell components 2 are arranged at the four corners of each lattice 9. Further, the length of any side of the lattice 9 is not less than 30 mm. In this technical solution, the shell 1 is composed of a periodic arrangement of phononic crystal unit cell components 2. The periodic arrangement here refers to the equal spacing in the axial and circumferential directions of the shell 1. The phononic crystal unit cell component 2 uses the barrel wall of the shell 1 as the phononic crystal substrate, and a structure composed of a silicone rubber cylinder and a steel cylinder is periodically attached to its outer surface. The preferred lattice 9 is square, and the length of any side of the lattice 9 is 50.0 mm. Specifically, the lattice constant of the phononic crystal unit cell component, the radius and height of the silicone rubber cylinder and the steel cylinder are set according to the frequency range when the vibration response of the liquid reservoir is large. The lattice constant refers to the side length of the lattice 9. Changes in the above parameters will affect the action frequency band of the phononic crystal. Therefore, the size of each block should be divided according to the actual vibration response frequency, and then consider how many blocks the entire liquid reservoir cylinder area can be divided into.

[0061] In some embodiments, along the circumference of the shell 1, a plurality of the phononic crystal unit cell components 2 are arranged at intervals on the outer peripheral wall of the shell 1, and the spacing between two connected phononic crystal unit cell components 2 is the same, and / or, in the axial direction of the shell 1, a plurality of the phononic crystal unit cell components 2 are arranged at intervals on the outer peripheral wall of the shell 1, and the spacing between multiple phononic crystal unit cell components 2 is the same. In this technical solution, the phononic crystal unit cell component 2 is composed of three different structures, namely, the cylinder wall of the shell 1, which refers to a part of the cylinder wall rather than the entire cylinder wall, that is, the cylinder wall needs to be periodically divided into multiple blocks, a silicone rubber cylinder is adhered to each block, and then a steel cylinder, a silicone rubber cylinder and a steel cylinder are adhered on the silicone rubber cylinder, and the unit cell components are periodically arranged to form a phononic crystal plate. The steel cylinder and the silicone rubber cylinder together constitute a "mass-spring" system, which has a resonant frequency. Under the excitation of elastic waves of a specific frequency, the fixed frequency, that is, the resonant frequency of the "mass-spring" system, resonates in the scatterer and interacts with the elastic wavelength wave in the matrix, thereby suppressing the propagation of the elastic wave and achieving the effect of suppressing vibration. A plurality of phononic crystal unit cell components are periodically arranged on the shell 1, each unit cell component includes a silicone rubber cylinder and a steel cylinder on the silicone rubber cylinder, which together constitute a "mass-spring" system, where the "mass" corresponds to the steel cylinder and the "spring" corresponds to the soft silicone rubber cylinder.

[0062] In some embodiments, in combination with Figures 4 to 6 As shown, the shell 1 is provided with a plurality of grooves 10, 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 assembly 2 is arranged at the bottom center of the groove 10. In this technical solution, the vibration on the phononic crystal unit cell assembly can be converged to the center of the two-dimensional acoustic black hole thin plate through the groove 10, that is, the vibration is "localized" in 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 reservoir. The convergence here does not mean that the vibration on the entire liquid reservoir cylinder converges to this point. The thickness of the shell 1 changes from the outside to the inside according to the power exponent, that is, it satisfies h(x)=εx n And when n≥2, the wave number of the bending wave approaches infinity, and the group velocity and phase velocity approach 0, that is, no reflection will be formed, and vibration "convergence" is achieved.

[0063] The present invention also provides a liquid storage device, comprising the above-mentioned shell vibration reduction structure, wherein an upper end cover 5 is provided at one end of the shell, and a lower end cover 6 is provided at the other end, an air intake pipe 7 is provided on the upper end cover 5, and an air intake pipe 8 is provided on the lower end cover 7. Phononic crystals are periodic structures or composite materials composed of two or more materials. Due to the periodicity of the medium inside the phononic crystal, elastic wave band gaps can be generated when elastic waves propagate therein, 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 reservoir of the present invention is a local resonance type phononic crystal. The local resonance mechanism believes that under the excitation of elastic waves of a specific frequency, each scatterer resonates and interacts with the elastic wavelength wave traveling wave, thereby inhibiting its propagation. Combined with the local resonance band gap theory of phononic crystals, it can be seen that when the sound wave is close to a certain order of natural frequency of the oscillator, the external excitation force on the matrix and the reaction force from the oscillator are zero, and the sound wave remains static. 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 reservoir; when the sound wave frequency continues to increase, the reaction force of the oscillator on the matrix is ​​weakened, the vibration mode of the matrix is ​​activated, and the sound wave can continue to propagate in the phononic crystal structure, and a sound insulation valley appears at this time.

[0065] The liquid storage device of the present invention has a band gap characteristic: under the influence of the internal periodic structure of the phononic crystal, when the elastic wave propagates in the phononic crystal, a special dispersion relationship is formed due to the enhanced mutual coupling between the incident wave, the reflected wave and the transmitted wave. The frequency range between the dispersion curves is called a band gap because the elastic wave cannot propagate, also known as a wave stop band, a forbidden band or a stop band.

[0066] Due to the periodicity of the medium inside the phononic crystal, that is, the periodicity of the material - Bragg scattering mechanism; the periodicity of the structure - local resonance mechanism, an elastic wave band gap can be generated when elastic waves propagate therein. Therefore, the band gap characteristics of the phononic crystal can be used to effectively suppress vibration and noise within the band gap frequency range.

[0067] The liquid reservoir of the present invention utilizes the local resonance mechanism. The scatterer 4 and the elastic member 3 together constitute a "mass-spring" system. The system has a resonant frequency. Under the excitation of elastic waves of a specific frequency, the specific frequency is the resonant frequency of the "mass-spring" system. The scatterer resonates and interacts with the elastic wave traveling wave in the matrix to form a band gap, thereby suppressing the propagation of the elastic wave and achieving the effect of suppressing vibration.

[0068] The attached phononic crystal reservoir structure with vibration reduction and sound insulation provided by the embodiments of the present invention has a phononic crystal unit cell size and material that can be changed, so that the frequencies of the peaks and troughs of the sound transmission loss curve change; at the same time, by increasing or decreasing the number of phononic crystal units or changing the scatterer material, the weight of the reservoir can be increased, further enhancing the vibration reduction effect.

[0069] The present invention also provides a compressor, comprising the above-mentioned shell vibration reduction structure.

[0070] The housing vibration reduction structure of the present invention can also be used for a 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, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A shell vibration reduction structure, Features: include: A shell (1), wherein a plurality of phononic crystal unit cell components (2) are arranged on the shell (1), and the plurality of phononic crystal unit cell components (2) are arranged at intervals on the outer peripheral wall of the shell (1).

2. The housing vibration reduction structure according to claim 1, Features: The phononic crystal unit cell component (2) comprises an elastic member (3) and a scatterer (4), the housing (1) serving as a phononic crystal substrate, one end of the elastic member (3) being arranged on the phononic crystal substrate, and the other end being arranged on the scatterer (4).

3. The housing vibration reduction structure according to claim 2, Features: 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.

4. The housing vibration reduction structure according to claim 3, Features: 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.

5. The housing vibration reduction structure according to claim 1, Features: The shell (1) has a plurality of lattices (9), the plurality of lattices (9) are connected in sequence, the lattices (9) are rectangular, and the phononic crystal unit cell components (2) are arranged at the four corners of each of the lattices (9).

6. The housing vibration reduction structure according to claim 1, Features: The length of any side of the lattice (9) is not less than 30 mm.

7. The housing vibration reduction structure according to claim 1, Features: Along the circumference of the shell (1), a plurality of the phononic crystal unit cell assemblies (2) are arranged at intervals on the outer peripheral wall of the shell (1), and the spacing between two consecutive phononic crystal unit cell assemblies (2) is the same; and / or, in the axial direction of the shell (1), a plurality of the phononic crystal unit cell assemblies (2) are arranged at intervals on the outer peripheral wall of the shell (1), and the spacing between the plurality of the phononic crystal unit cell assemblies (2) is the same.

8. The housing vibration reduction structure according to claim 1, Features: The shell (1) is provided with a plurality of grooves (10), 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 bottom center of the groove (10).

9. A liquid reservoir, It is characterized in that A shell vibration reduction structure comprising the shell according to any one of claims 1 to 8, wherein an upper end cover (5) is provided at one end of the shell and a lower end cover (6) is provided at the other end, an air intake pipe (7) is provided on the upper end cover (5), and an air inlet pipe (8) is provided on the lower end cover (6).

10. A compressor, It is characterized in that The invention comprises the shell vibration reduction structure described in any one of claims 1 to 8.

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