Press cabin shell and refrigeration device

Abstract

The utility model relates to the technical field of household appliances provides a press cabin shell and refrigeration plant. According to the press cabin shell of the application embodiment, including shell main part and perforated plate, shell main part has the noise reduction side, and the noise reduction side of shell main part is equipped with a plurality of recessed cavities;Perforated plate cover is located in the opening end of recessed cavity, and perforated plate is equipped with through hole, and through hole and recessed cavity are set up one to one, and every through hole and the recessed cavity corresponding form local acoustic resonance sound absorber. Wherein, recessed cavity constitutes the sound cavity of local acoustic resonance sound absorber, and through hole constitutes the neck of local acoustic resonance sound absorber. Through being equipped with a plurality of recessed cavities on shell main part and covering perforated plate on the opening of recessed cavity to form a plurality of local acoustic resonance sound absorbers, efficient, compact noise reduction effect is realized, and sound absorption function and structure bearing function are integrated, not only simple and compact overall structure, small space occupation, but also avoid the durability and health problem such as performance attenuation in the humid environment.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to compressor chamber shell and refrigeration equipment. Background Technology

[0002] As an indispensable appliance in modern homes, the operating noise level of refrigeration equipment is a key indicator of product quality and user experience. The noise of refrigeration equipment primarily originates from the compressor. During operation, the compressor generates broadband aerodynamic noise and mechanical vibration. These vibrations are transmitted through pipes and supports to the compressor compartment's outer shell, causing it to vibrate and ultimately propagate to the outside as structural radiated noise. Therefore, compressor compartment radiated noise is the main source of overall refrigerator noise.

[0003] Various methods have been employed to control compressor cabin noise, but all have limitations. Common methods include increasing the mass of the compressor cabin shell, for example, by using a double-layer sound insulation structure to reduce noise radiation using the mass law. However, this method significantly increases material consumption and product weight, contradicting the trend towards lightweight and energy-efficient home appliances. Another approach is to attach porous sound-absorbing materials such as glass wool and rock wool to the inner walls of the compressor cabin. These materials have good absorption effects on mid-to-high frequency noise, but in the humid and greasy environment inside refrigeration equipment, they easily absorb moisture and contaminants, leading to a sharp decline in sound absorption performance and potentially causing hygiene and odor problems. Furthermore, the potential dispersion of porous material fibers is also unfriendly to production and the environment. Another method is to optimize the compressor's support feet to isolate vibration transmission. This method mainly targets low-frequency structural sound transmission, but its effect on controlling directly radiated airborne noise is limited. Overall, the above-mentioned traditional methods generally suffer from inherent defects in dealing with low-frequency noise, such as low efficiency, large space occupation, poor environmental impact, or insufficient durability.

[0004] Therefore, there is an urgent need in this field for an efficient, compact, and reliable noise reduction solution for the compressor compartment of refrigeration equipment. Utility Model Content

[0005] This application aims to solve at least one of the technical problems existing in the related art. To this end, this application proposes a compressor compartment shell.

[0006] This application also proposes a refrigeration device.

[0007] The compressor compartment housing according to the first aspect of the present application includes: The shell body has a noise reduction side, and the noise reduction side of the shell body is provided with several cavities; A perforated plate is provided on the opening end of the cavity. The perforated plate has through holes, and the through holes and the cavities are arranged in a one-to-one correspondence. Each through hole and the corresponding cavity form a local acoustic resonance sound absorber.

[0008] According to the embodiments of this application, the compressor chamber shell has several recesses on the shell body and a perforated plate is covered on the opening of the recesses to form several local acoustic resonance sound absorbers, which achieves a high-efficiency and compact noise reduction effect. The sound absorption function and the structural load-bearing function are integrated into one, without the need to attach additional porous sound-absorbing materials. Not only is the overall structure simple and compact with a small space occupation, but it also avoids durability and hygiene problems such as performance degradation in humid environments.

[0009] According to one embodiment of this application, the shell body includes a plurality of shell plates, the plurality of shell plates forming the shell body, and at least one of the shell plates is provided with the cavity.

[0010] According to one embodiment of this application, the cavity is integrally formed onto the shell body by stamping, casting, or molding processes.

[0011] According to one embodiment of this application, the number of local acoustic resonance absorbers is multiple; the local acoustic resonance absorbers are independent of each other.

[0012] According to one embodiment of this application, the perforated plate forms a sealed connection with the opening edge of the recess.

[0013] According to one embodiment of this application, the structural parameters of the local acoustic resonators located at different positions are configured independently; the structural parameters include at least one of acoustic cavity volume, neck size, and neck shape.

[0014] According to one embodiment of this application, the local acoustic resonance absorber is distributed along the shell body array.

[0015] According to one embodiment of this application, the through hole is circular, triangular, or polygonal in shape.

[0016] According to one embodiment of this application, the axial thickness of the through hole is the same as the thickness of the perforated plate. And / or, The perforated plate has a neck structure, which is positioned corresponding to the through hole. The length of the neck structure is greater than the thickness of the perforated plate, and the neck structure extends toward one side of the cavity.

[0017] A refrigeration apparatus according to a second aspect embodiment of this application includes: compressor compartment equipment; The compressor chamber shell described above is provided on the noise reduction side of the compressor chamber shell.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is one of the structural schematic diagrams of the compressor chamber shell provided in the embodiments of this application.

[0021] Figure 2 This is the second structural schematic diagram of the compressor chamber shell provided in the embodiments of this application.

[0022] Figure 3 This is one of the structural schematic diagrams of a local acoustic resonance absorber formed by the cavity and the through hole of the perforated plate provided in the embodiments of this application.

[0023] Figure 4 This is one of the structural schematic diagrams of a local acoustic resonance absorber formed by the cavity and the through hole of the perforated plate provided in the embodiments of this application.

[0024] Figure 5 This is a schematic diagram of the shell body provided in the embodiments of this application.

[0025] Figure 6 This is a schematic diagram of the structure of the perforated plate provided in the embodiments of this application.

[0026] Figure label: 1. Shell body; 1-1. Shell plate on the upper side of the press compartment; 1-2. Shell plate on the left side of the press compartment; 1-3. Shell plate on the right side of the press compartment; 1-4. Shell plate on the front side of the press compartment; 11. Cavity; 2. Perforated plate; 2-1. Perforated plate covering the upper side of the press chamber; 2-2. Perforated plate covering the left side of the press chamber assembly; 2-3. Perforated plate covering the right side of the press chamber assembly; 2-4. Perforated plate covering the front side of the press chamber; 21. Through hole; 22. Neck structure. Detailed Implementation

[0027] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0028] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections, wherein a fixed connection can include an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0030] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0032] The compressor compartment shell according to the embodiments of this application, refer to... Figures 1 to 3 The compressor chamber shell includes a main body 1 and a perforated plate 2. The main body 1 has a noise-reducing side, and the noise-reducing side of the main body 1 has several recesses 11. The perforated plate 2 covers the opening end of the recesses 11 and has through holes 21. The through holes 21 and the recesses 11 are arranged in a one-to-one correspondence. Each through hole 21 and its corresponding recess 11 forms a local acoustic resonance absorber. In this acoustic structure, the recesses 11 act as the acoustic cavity of the local acoustic resonance absorber to provide acoustic compliance, while the through holes 21 constitute the neck of the local acoustic resonance absorber, and its geometry determines the sound quality and acoustic impedance. This composite structure works based on the Helmholtz resonance principle. When the frequency of the incident sound wave is consistent with the natural frequency of the local acoustic resonance absorber, the air column in the neck will vibrate violently, converting sound energy into heat energy through friction with the wall and thermal conduction, thereby achieving efficient noise suppression. The concave cavity 11 forms the acoustic cavity of the local acoustic resonance absorber, and the through hole 21 forms the neck of the local acoustic resonance absorber.

[0033] According to the embodiments of this application, the compressor chamber shell is provided with a plurality of recesses 11 on the shell body 1 and a perforated plate 2 is covered on the opening of the recesses 11 to form a plurality of local acoustic resonance sound absorbers, thereby achieving a high-efficiency and compact noise reduction effect. The sound absorption function and the structural load-bearing function are integrated into one, without the need to attach additional porous sound-absorbing materials. Not only is the overall structure simple and compact with a small space occupation, but it also avoids durability and hygiene problems such as performance degradation in humid environments.

[0034] In some embodiments, by rationally designing the acoustic parameters (such as cavity volume, neck size, etc.) of each local acoustic resonance absorber independently or in combination, the radiated noise of the compressor chamber in a specific frequency band can be effectively suppressed, thereby significantly improving the quietness performance of the refrigeration equipment.

[0035] According to one embodiment of this application, the shell body 1 includes a plurality of shell plates, which surround the shell body 1, and at least one shell plate is provided with a cavity 11.

[0036] The main body 1 is composed of multiple shell plates spliced ​​or connected together to form a space for accommodating the compressor. At least one shell plate has the recessed cavity 11. These shell plates can be planar panels, connected to form a polyhedral structure of the main body 1, such as a common cuboid or cube structure, to adapt to standard compressor compartment layouts. Of course, the polyhedral structure is not limited to cuboids; other polyhedral forms such as prisms can also be used according to industrial design requirements. In another embodiment, to meet specific appearance or internal layout requirements, some or all shell plates can be designed with curved surfaces, thus giving the main body 1 a cylindrical, spherical, or other streamlined appearance. This flexible structural configuration ensures that the compressor compartment shell can be widely adapted to various types of refrigeration equipment.

[0037] In some embodiments, the shell plates are planar panels, and multiple planar panels are interconnected to form a polyhedral shell body. For example, the polyhedral shell body can specifically be configured as a cuboid or cube structure to adapt to common compressor space layouts. It is understood that the polyhedral structure is not limited to a cuboid, but can also be a prism or other polyhedral form. In other embodiments, to adapt to specific industrial designs or internal space constraints, at least some shell plates can be curved shell plates. Multiple shell plates (which can combine planar and curved plates) can be connected to form a shell body 1 structure such as a cylinder, a sphere, or other curved surfaces. This flexible structural configuration allows the compressor chamber shell of this application to adapt to a variety of different product forms and installation environments.

[0038] According to one embodiment of this application, the cavity 11 is integrally formed onto the shell body 1 by stamping, casting, or molding. This integral structure has several advantages: First, it avoids additional assembly steps, improving production efficiency and reducing manufacturing costs; second, it ensures the structural integrity and sealing of the connection between the cavity 11 and the shell body 1, avoiding acoustic performance degradation or structural vibration problems caused by poor connection or sealing, thereby improving the operational reliability and durability of the local resonant sound absorber.

[0039] Understandably, stamping is particularly suitable for flat or slightly curved shells made of sheet metal; casting is suitable for metal materials such as aluminum alloys and zinc alloys or engineering plastics, and can form shell bodies 1 with complex shapes; while molding (including but not limited to injection molding and compression molding) is widely applicable to the molding of shell bodies 1 made of engineering plastics or composite materials. These processes provide those skilled in the art with flexible choices to adapt to different material and product design requirements.

[0040] According to one embodiment of this application, there are multiple local acoustic resonance absorbers; the local acoustic resonance absorbers are independent of each other.

[0041] By setting up multiple independent resonant units, coordinated control of broadband noise can be achieved. In one embodiment, the cavity volumes of different local acoustic resonant absorbers are configured to be the same, thereby producing a consistent strong absorption effect on noise at a specific target frequency. In another embodiment, the cavity volumes of different local acoustic resonant absorbers are intentionally configured to be different. By changing the cavity volume, the inherent resonant frequency of each local acoustic resonant absorber can be precisely adjusted. Based on this principle, local acoustic resonant absorbers with specific cavity volumes can be arranged at specific locations according to the spatial distribution characteristics and spectral characteristics of noise sources within the compressor chamber. For example, in areas with strong noise radiation, or for a specific low-frequency peak that needs to be suppressed, a local acoustic resonant absorber with its cavity volume specifically tuned to the corresponding frequency can be set up, thereby achieving precise and efficient targeted noise reduction and optimizing the overall acoustic performance of the compressor chamber under target operating conditions.

[0042] Furthermore, the structural parameters of the local acoustic resonant absorbers can be designed independently. In one embodiment, the shape and / or size of the through-hole 21 of different local acoustic resonant absorbers can be configured to be the same or different. The geometric features of the through-hole 21 (such as circular, polygonal, etc. shapes, and dimensions such as aperture and length) jointly determine the acoustic quality and acoustic impedance of the local acoustic resonant absorber, thereby affecting its absorption bandwidth and peak value. By designing the through-hole 21 of each local acoustic resonant absorber differently, flexible and precise control over noise of different frequency bands and types can be further achieved.

[0043] To ensure that each local acoustic resonator can work independently and accurately, and to prevent acoustic energy from crosstalk between adjacent local acoustic resonators, sealing and isolation design is crucial.

[0044] According to one embodiment of this application, when the perforated plate 2 covers the noise reduction side, the perforated plate 2 and the opening edge of the cavity 11 form a sealed connection. Specifically, this can be achieved in two ways: first, the opening edge of the cavity 11 and the corresponding area of ​​the perforated plate 2 are in direct and tight contact to form a contact seal; second, a sealing element is provided between the opening edge of the cavity 11 and the perforated plate 2 to achieve a reliable indirect seal.

[0045] Furthermore, the opening edges of adjacent recesses 11 are separated by partition walls; when the perforated plate 2 is installed on the noise reduction side, it connects with the end of the partition wall, thereby ensuring that each local acoustic resonant absorber is independent of the others. This design ensures that each local acoustic resonant absorber, consisting of a recess 11 and a corresponding through hole 21, is an independent acoustic system that can operate precisely at a preset resonant frequency, effectively preventing acoustic energy crosstalk between adjacent local acoustic resonant absorbers.

[0046] According to one embodiment of this application, the structural parameters of the local acoustic resonators located at different positions are configured independently; the structural parameters include at least one of acoustic cavity volume, neck size, and neck shape.

[0047] According to one embodiment of this application, the distribution range, spatial location, and acoustic impedance of the local acoustic resonators on the shell plate are independently configured. For example, in areas with strong vibration or high noise radiation efficiency, local acoustic resonators targeting the dominant frequency can be densely arranged; while for scenarios where broadband noise reduction is required for the entire compressor chamber, multiple local acoustic resonators with different tuning frequencies can be combined and distributed to form a broadband sound absorption effect.

[0048] According to one embodiment of this application, local acoustic resonance absorbers are arrayed along the shell body 1.

[0049] According to one embodiment of this application, the through hole 21 is circular, triangular or polygonal in shape.

[0050] Regarding the neck structure of the local acoustic resonance absorber, this application provides two main embodiments.

[0051] According to one embodiment of this application, refer to Figure 3 The axial thickness of the through hole 21 is the same as the thickness of the perforated plate 2, which makes it easy to process and has a low cost. It is suitable for noise reduction scenarios with specific requirements for peak resonant frequencies.

[0052] According to one embodiment of this application, refer to Figure 4 The perforated plate 2 is provided with a neck structure 22, which is positioned corresponding to the through hole 21. The length of the neck structure 22 is greater than the thickness of the perforated plate 2, and the neck structure 22 extends toward the side of the cavity 11.

[0053] The neck structure 22 is equivalent to increasing the effective length of the neck of the local acoustic resonant absorber, providing additional design freedom for precisely adjusting the acoustic quality (sound quality) of the local acoustic resonant absorber. By changing the length or cross-sectional dimensions of this neck structure 22, its resonant frequency and sound absorption characteristics can be adjusted more flexibly without significantly changing the overall space occupied by the local acoustic resonant absorber, in order to meet more complex noise reduction needs.

[0054] In one embodiment, refer to Figure 5 and Figure 6The noise-reducing compressor compartment consists of a shell body 11 and a perforated plate 22. The shell body 11 is enclosed by a shell plate, and an unspecified number of cavities 11 are distributed on the shell body 11. The perforated plate 22 covers the opening ends of the cavities 11 on different sides of the shell body 11. Through holes 21 are distributed on the perforated plate 22. The through holes 21 and the cavities 11 behind it form a localized acoustic resonance absorber. The cavities 11 are the acoustic cavity part of the localized acoustic resonance absorber, and the through holes 21 are the neck of the localized acoustic resonance absorber. Among these, Figure 1 In the diagram, 1-1 is the shell plate on the upper side of the compressor compartment, 1-2 is the shell plate on the left side of the compressor compartment, 1-3 is the shell plate on the right side of the compressor compartment, and 1-4 is the shell plate on the front side of the compressor compartment. Correspondingly, the perforated plate 22 includes multiple perforated plate bodies, of which 2-1 is the perforated plate body covering the upper side of the compressor compartment, 2-2 is the perforated plate body covering the left side of the compressor compartment assembly, 2-3 is the perforated plate body covering the right side of the compressor compartment assembly, and 2-4 is the perforated plate body covering the front side of the compressor compartment.

[0055] The number of local acoustic resonant absorbers can be set according to noise reduction requirements, with at least one. When multiple local acoustic resonant absorbers are present, their distribution range, spatial location, and acoustic impedance (mainly determined by the cavity volume and neck size) can be independently configured and optimized to achieve optimal noise reduction for the compressor chamber under specific target operating conditions. The cavity of a local acoustic resonant absorber is a cavity with a certain air volume, and its shape is unrestricted; it can be rectangular, cylindrical, irregular, or any other shape. The cavity sizes of different local acoustic resonant absorbers can be set to be the same or different according to their designed resonant frequency requirements.

[0056] The refrigeration equipment according to a second aspect embodiment of this application includes a compressor compartment and a compressor compartment housing, wherein the compressor compartment is disposed on the noise reduction side of the compressor compartment housing. The compressor compartment is housed within a sealed space formed by the compressor compartment housing, and its noise radiation surface is disposed facing or close to the noise reduction side of the housing body 1. During operation, the low-to-medium frequency noise generated by the compressor compartment, particularly its structural radiated noise, mainly propagates to the noise reduction side.

[0057] By applying the compressor chamber shell of this application, the refrigeration equipment can utilize several localized acoustic resonant sound absorbers distributed on the noise-reducing side of its shell body 1. This design allows the refrigeration equipment to achieve significant and lasting noise reduction without relying on heavy sound insulation materials or easily deteriorated porous sound-absorbing materials. In particular, it can effectively suppress uncomfortable low-frequency humming sounds, thereby achieving better overall quiet operation performance and user experience.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate this application and are not intended to limit this application. Although this application has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of this application do not depart from the spirit and scope of the technical solutions of this application and should be covered within the scope of the claims of this application.

Claims

1. A compressor compartment shell, characterized in that, include: The shell body has a noise reduction side, and the noise reduction side of the shell body is provided with several cavities; A perforated plate is provided on the opening end of the cavity. The perforated plate has through holes, and the through holes and the cavities are arranged in a one-to-one correspondence. Each through hole and the corresponding cavity form a local acoustic resonance sound absorber.

2. The compressor chamber shell according to claim 1, characterized in that, The shell body includes multiple shell plates, which surround the shell body, and at least one shell plate is provided with the cavity.

3. The compressor chamber shell according to claim 1, characterized in that, The cavity is integrally formed onto the shell body through stamping, casting, or molding processes.

4. The compressor chamber shell according to claim 1, characterized in that, The number of local acoustic resonance absorbers is multiple; the local acoustic resonance absorbers are independent of each other.

5. The compressor chamber shell according to claim 4, characterized in that, The perforated plate forms a sealed connection with the opening edge of the cavity.

6. The compressor chamber shell according to claim 4, characterized in that, The structural parameters of the local acoustic resonant absorbers, which are located in different spatial positions, are configured independently; the structural parameters include at least one of the following: acoustic cavity volume, neck size, and neck shape.

7. The compressor chamber shell according to claim 1, characterized in that, The local acoustic resonance absorbers are distributed along the shell body array.

8. The compressor chamber shell according to any one of claims 1 to 7, characterized in that, The through hole can be circular, triangular, or polygonal in shape.

9. The compressor chamber outer shell according to any one of claims 1 to 7, characterized in that, The axial thickness of the through hole is the same as the thickness of the perforated plate. And / or, The perforated plate has a neck structure, which is positioned corresponding to the through hole. The length of the neck structure is greater than the thickness of the perforated plate, and the neck structure extends toward one side of the cavity.

10. A refrigeration device, characterized in that, include: compressor compartment equipment; The compressor chamber housing according to any one of claims 1 to 9, wherein the compressor chamber is disposed on the noise reduction side of the compressor chamber housing.

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