Press cover and heat pump

Abstract

The utility model discloses a press cover and a heat pump, the press cover comprises a first sound insulation assembly and a second sound insulation assembly, the first sound insulation assembly is circumferentially arranged on the outer side of a compressor, and the second sound insulation assembly is arranged on the top side of the compressor; the first sound insulation assembly sequentially comprises a first inner sound insulation piece, a first inner component, a first outer sound insulation piece and a first outer component from inside to outside, and a gap is formed between the first inner component and the first outer sound insulation piece to form an air layer. The double-layer sound insulation design is adopted, the air layer is reserved, a resonance sound absorption structure can be formed, medium-high frequency sound is effectively absorbed, and noise generated by the compressor is remarkably reduced.

Description

Technical Field

[0001] This application relates to the technical field of heat pumps, and more particularly to a compressor shroud and a heat pump. Background Technology

[0002] In the field of swimming pool heat pump equipment, the compressor, as the core power component, generates mechanical vibration noise and airflow pulsation noise during operation, which have become key factors affecting the overall acoustic performance of the unit. Current technologies commonly employ a single-layer metal soundproof enclosure to isolate the compressor from noise, forming a passive noise barrier through a combination of the enclosure and sound-absorbing materials. However, this structure has significant limitations in dealing with the compressor's wide frequency range noise, especially with a significant attenuation of sound insulation when mid-to-low frequency sound waves have strong penetrating power, causing noise levels to exceed acceptable thresholds for users under specific ambient temperature conditions. Furthermore, traditional soundproof enclosures, due to their simple structural design, are unable to effectively block the vibration transmission path of the compressor casing and suffer from secondary noise amplification caused by internal airflow disturbances. With increasingly stringent residential acoustic standards and rising user demands for quieter equipment, existing single-layer soundproofing solutions are no longer sufficient to meet the noise reduction requirements of high-end swimming pool heat pump products. Utility Model Content

[0003] The purpose of this application is to provide a compressor cover and heat pump that adopts a double-layer sound insulation design and reserves an air layer, which can form a resonant sound absorption structure, effectively absorb mid-to-high frequency sound, and significantly reduce the noise generated by the compressor.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] On one hand, a compressor cover is provided, comprising: a first sound insulation component and a second sound insulation component, wherein the first sound insulation component is circumferentially disposed on the outside of the compressor, and the second sound insulation component is disposed on the top side of the compressor; the first sound insulation component comprises, from the inside to the outside, a first inner sound insulation member, a first inner component, a first outer sound insulation member and a first outer component, wherein a gap is provided between the first inner component and the first outer sound insulation member to form an air layer.

[0006] Furthermore, the second sound insulation component includes, from the inside out, a second inner sound insulation member, a second inner component, a second outer sound insulation member, and a second outer component, with a gap between the second inner component and the second outer sound insulation member to form an air layer.

[0007] Furthermore, the first inner component is provided with a positioning notch for positioning the first outer sound insulation component and the first inner sound insulation component; and / or the second outer component is provided with a positioning point for positioning the second outer sound insulation component.

[0008] Furthermore, the bottom of the first inner component and the bottom of the first outer component are connected by fasteners.

[0009] Furthermore, the first internal component includes a plurality of sheet metal parts connected sequentially along the circumference, and adjacent sheet metal parts are connected by a snap-fit ​​structure, the snap-fit ​​structure including a snap-fit ​​disposed on one of the sheet metal parts and a snap-fit ​​groove disposed on the other adjacent sheet metal part.

[0010] Furthermore, the front end face and side end face of the first internal component are provided with multiple sound-absorbing holes.

[0011] Furthermore, the diameter of the sound-absorbing hole is between 8mm and 12mm.

[0012] Furthermore, the first inner component has a plurality of protrusions spaced apart in the direction of the first inner sound insulation component, and the plurality of protrusions form mounting positions for installing the second sound insulation component.

[0013] Furthermore, the thickness of the air layer is between 4 mm and 8 mm.

[0014] On the other hand, a heat pump is also provided, including a compressor and a compressor shroud as described above, wherein a first inner sound insulation member is wrapped around the outer peripheral wall of the compressor, and a second sound insulation component is disposed on the top of the compressor.

[0015] The beneficial effects of this application are as follows: Through the double-layer sound insulation design and the resonant sound-absorbing structure formed by the air layer, the compressor cover of this application has a significant effect on reducing compressor noise. Compared with traditional single-layer sound insulation covers, it can effectively absorb mid-to-high frequency sounds, greatly reducing the noise generated by the compressor during operation. This allows the pool heat pump equipment to maintain a low noise level under various operating conditions, meeting users' needs for a quiet environment. At the same time, this design improves the overall acoustic performance of the pool heat pump product. In addition, after reducing noise, users are no longer disturbed by compressor noise when using the pool heat pump equipment, significantly improving the user experience. Attached Figure Description

[0016] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a perspective view of the press cover described in the embodiment of this application;

[0018] Figure 2 This is an exploded view of the compressor shroud described in the embodiments of this application;

[0019] Figure 3 This is an assembly drawing of the second outer component and the second outer sound insulation component according to an embodiment of this application;

[0020] Figure 4 Examples of this application Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 This is a perspective view of the first internal component in an embodiment of this application;

[0022] Figure 6 Examples of this application Figure 5 Enlarged view of point B in the middle;

[0023] Figure 7 This is an exploded view of the first internal component in an embodiment of this application.

[0024] In the diagram: 1. First sound insulation component; 101. First inner sound insulation component; 102. First inner component; 103. First outer sound insulation component; 104. First outer component; 105. Boss; 106. Buckle structure; 107. Positioning notch; 1021. Sheet metal part; 1022. Sound absorption hole; 2. Second sound insulation component; 201. Second inner sound insulation component; 202. Second inner component; 203. Second outer sound insulation component; 204. Second outer component; 205. Positioning point. Detailed Implementation

[0025] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] In the field of swimming pool heat pump equipment, the compressor, as the core power component, generates mechanical vibration noise and airflow pulsation noise during operation, which are key factors affecting the overall acoustic performance of the unit. Current technologies commonly employ a single-layer metal soundproof enclosure to isolate the compressor from noise, forming a passive noise barrier through a combination of the enclosure and sound-absorbing materials. However, this structure has significant limitations in dealing with the compressor's wide frequency range noise, especially with a significant attenuation of sound insulation when mid-to-low frequency sound waves have strong penetrating power, causing noise levels to exceed acceptable thresholds for users under specific ambient temperature conditions. Furthermore, traditional soundproof enclosures, due to their simple structural design, are unable to effectively block the vibration transmission path of the compressor casing and suffer from secondary noise amplification caused by internal airflow disturbances. With increasingly stringent residential acoustic standards and rising user demands for quieter equipment, existing single-layer soundproofing solutions are no longer sufficient to meet the noise reduction requirements of high-end swimming pool heat pump products.

[0029] In response to the above problems, such as Figures 1-7 As shown, this application embodiment provides a compressor cover with a double-layer sound insulation design and a reserved air layer to form a resonant sound-absorbing structure, effectively absorbing mid-to-high frequency sounds and significantly reducing the noise generated by the compressor. Specifically, the compressor cover includes a first sound insulation component 1 and a second sound insulation component 2. The first sound insulation component 1 is circumferentially disposed on the outside of the compressor, and the second sound insulation component 2 is disposed on the top side of the compressor, forming an all-round sound insulation structure. Taking the first sound insulation component 1 as an example, it includes, from the inside out, a first inner sound insulation component 101, a first inner component 102, a first outer sound insulation component 103, and a first outer component 104. The innermost first inner sound insulation component 101 directly faces the compressor, which can initially block noise transmission and absorb some sound waves. The first inner component 102 plays a supporting and isolating role, further blocking the vibration transmission path. The first outer sound insulation component 103 forms another layer of sound insulation barrier on the outside, preventing noise from spreading outward. Most importantly, a gap is provided between the first inner component 102 and the first outer sound insulation component 103 to form an air layer. When sound waves propagate to this air layer, they will resonate with the air layer. This resonant sound absorption structure can effectively absorb mid-to-high frequency sounds, thereby reducing the noise generated by the compressor.

[0030] Through this double-layer sound insulation design and the resonant sound-absorbing structure formed by the air layer, the compressor cover of this application has a significant effect on reducing compressor noise. Compared with traditional single-layer sound insulation covers, it can effectively absorb mid-to-high frequency sounds, greatly reducing the noise generated during compressor operation. This allows the pool heat pump equipment to maintain a low noise level under various operating conditions, meeting users' needs for a quiet environment. At the same time, this design improves the overall acoustic performance of the pool heat pump product, making it more competitive in the high-end market, contributing to the creation of excellent pool heat pump products, and enhancing the product's brand image and market recognition. Furthermore, with reduced noise, users are no longer disturbed by compressor noise when using the pool heat pump equipment, significantly improving the user experience, enhancing user satisfaction and well-being, and facilitating product marketing and the accumulation of positive user feedback.

[0031] Meanwhile, the second sound insulation component 2, from the inside out, includes a second inner sound insulation component 201, a second inner component 202, a second outer sound insulation component 203, and a second outer component 204. A gap is provided between the second inner component 202 and the second outer sound insulation component 203 to form an air layer. This design further improves the sound insulation effect of the compressor housing. When sound waves propagate to the second sound insulation component 2, the second inner sound insulation component 201 first initially blocks and absorbs the sound waves. Subsequently, the sound waves encounter the second inner component 202, whose structural design effectively blocks the vibration transmission path, reducing noise caused by compressor housing vibration. The second outer sound insulation component 203 forms another layer of sound insulation barrier on the outside, further preventing noise from spreading outwards. Most importantly, the air layer between the second inner component 202 and the second outer sound insulation component 203 can resonate with the sound waves, forming a resonant sound-absorbing structure that effectively absorbs mid-to-high frequency sounds, thereby reducing the noise generated by the compressor.

[0032] Through this double-layer sound insulation design and the resonant sound-absorbing structure formed by the air layer, the second sound insulation component 2 plays a crucial role in reducing compressor noise. It not only effectively absorbs mid-to-high frequency sounds but also further blocks vibration transmission paths, reducing secondary noise amplification caused by internal airflow disturbances. Compared to traditional single-layer soundproof enclosures, this design significantly improves the overall acoustic performance of the pool heat pump equipment, enabling it to maintain a low noise level under various operating conditions and better meet users' needs for a quiet environment.

[0033] Furthermore, the first inner component 102 is provided with a positioning notch 107 for positioning the first outer sound insulation component 103 and the first inner sound insulation component 101; and / or the second outer component 204 is provided with a positioning point 205 for positioning the second outer sound insulation component 203. This design further optimizes the structural stability of the press cover. By providing the positioning notch 107 on the first inner component 102, the positions of the first outer sound insulation component 103 and the first inner sound insulation component 101 can be precisely fixed, ensuring that they will not shift or loosen during operation, thereby guaranteeing the stability of the sound insulation effect. Similarly, the positioning point 205 on the second outer component 204 also plays a similar role, effectively fixing the position of the second outer sound insulation component 203, further enhancing the structural stability of the entire press cover. This positioning design not only improves the assembly accuracy of the press cover but also extends its service life, ensuring the durability and reliability of the sound insulation effect during long-term operation.

[0034] It is worth mentioning that the bottom of the first inner component 102 and the bottom of the first outer component 104 are connected by fasteners. To further improve production efficiency, the bottom of the first inner component 102 and the second inner component 202 adopt a convenient assembly design. During the production process, the two components are pre-assembled and fixed together with fasteners (such as screws) to form a single structure. In this way, during production, the pre-assembled first inner component 102 and second inner component 202 can be assembled as a single sheet metal piece. This design not only simplifies the assembly process but also effectively improves production efficiency, ensures product quality stability, and reduces production costs, providing strong support for the company's large-scale production.

[0035] In some embodiments, the first internal component 102 includes a plurality of sheet metal parts 1021 connected sequentially along the circumference, with adjacent sheet metal parts 1021 connected by a snap-fit ​​structure 106. This solution utilizes the advantages of rapid assembly and low cost of the snap-fit ​​structure 106, making the assembly of the first internal component 102 more convenient and efficient. The snap-fit ​​structure 106 typically includes a snap and a slot. The snap is disposed on one side of one sheet metal part 1021, and the slot is disposed on the corresponding side of another sheet metal part 1021. Through the elastic deformation of the snap and the tight fit of the slot, a firm connection is achieved between two adjacent sheet metal parts 1021. This connection method is not only quick to install without the need for additional fasteners, making it suitable for thin sheet metal parts, but also requires high design precision to ensure the stability and reliability of the connection. By using the snap-fit ​​structure 106 for connection, the assembly process of the first internal component 102 is simplified, production costs are reduced, and production efficiency is improved.

[0036] In a scheme containing multiple separate sheet metal parts 1021, the positioning notch 107 in the first inner component 102 can be selected and set according to the actual situation. For example, if an installation cavity for installing the first inner sound insulation component 101 and the first outer sound insulation component 103 has been reserved in one of the sheet metal parts 1021, then there is no need to set the positioning notch 107 separately.

[0037] For heat pump equipment equipped with this compressor shroud, which features a sheet metal panel on the front and exposed fins on the rear, resulting in relatively low noise levels on the front but still requiring further optimization, this application embodiment incorporates a targeted innovation in the design of the first internal component 102. Specifically, we cleverly create multiple sound-absorbing holes 1022 on both the front and side surfaces of the first internal component 102.

[0038] The design of these sound-absorbing holes 1022 is not arbitrary, but rather meticulously calculated and laid out to ensure that they can effectively work in conjunction with the air layer left between the first external sound insulation component 103 to form a highly efficient resonant sound-absorbing structure. When the mid-to-high frequency sound waves generated by the compressor propagate to these sound-absorbing holes 1022, some of the sound waves are guided into the holes. Inside the holes, the sound waves undergo friction and adhesion with the hole walls and the air inside the holes. During this process, sound energy is effectively converted into other forms of energy such as heat energy, thereby achieving the purpose of absorbing sound energy and reducing noise.

[0039] Furthermore, the resonant sound-absorbing structure formed by the sound-absorbing holes 1022 combined with the air layer further enhances the absorption of mid-to-high frequency sounds. When the sound wave frequency matches the natural frequency of the resonant sound-absorbing structure, resonance occurs, at which point a large amount of sound wave energy is absorbed, further reducing noise levels. Through this innovative design, we can not only more effectively reduce noise from the front and sides of the compressor, improving the user's auditory experience, but also maintain the overall aesthetics and practicality of the heat pump equipment. This solution not only overcomes the limitations of traditional single-layer soundproof covers in dealing with wide-band noise, but also provides new ideas and solutions for noise reduction in high-end swimming pool heat pump products.

[0040] In the design of the press cover, the arrangement of the sound-absorbing holes 1022 also has a significant impact on the sound absorption effect and overall sound insulation performance. To maximize sound absorption efficiency and maintain a good appearance, various arrangement methods can be used to design the sound-absorbing holes.

[0041] A common arrangement is a circular array. In this design, the sound-absorbing holes 1022 are distributed in a regular circular pattern on the front and side faces of the first inner component 102. This arrangement is not only aesthetically pleasing but also ensures that sound waves can enter the sound-absorbing holes 1022 evenly in all directions, thereby achieving an all-around sound absorption effect.

[0042] Another arrangement is an elliptical array. Compared to a circular array, an elliptical array has a greater length, which helps to absorb sound waves more effectively in a specific direction. For example, if the noise generated by the compressor of a heat pump is mainly concentrated in a certain direction, an elliptical array can be used to optimize the sound absorption in that direction.

[0043] Furthermore, the honeycomb array arrangement is another innovative approach. In this design, the sound-absorbing holes 1022 are distributed in a hexagonal or honeycomb-like pattern, forming a dense and orderly structure. This arrangement not only increases the number and density of the sound-absorbing holes 1022 but also enhances the stability and strength of the structure. Simultaneously, the honeycomb array arrangement provides better airflow channels, helping to reduce the temperature and humidity inside the compressor shroud and improve the operating efficiency of the heat pump equipment.

[0044] It is important to note that the arrangement of the sound-absorbing holes 1022 should be selected based on the specific compressor model, operating conditions, and noise reduction requirements. Different arrangements may have varying impacts on the sound absorption effect and overall sound insulation performance; therefore, thorough testing and evaluation are necessary in practical applications.

[0045] In practical implementation, to optimize the noise reduction at the front of the compressor, we meticulously designed the dimensions of the sound-absorbing holes 1022 on the front and side faces of the first internal component 102. After numerous experiments and tests, we determined that a hole diameter range of 8mm to 12mm for the sound-absorbing holes 1022 is most suitable. This choice of hole diameter range is not accidental, but rather based on in-depth consideration of acoustic principles and practical application effects. Too small a hole diameter may restrict the passage of sound waves into the hole, affecting the sound absorption effect; while too large a hole diameter may lead to a decrease in structural strength, and at the same time, weaken the friction and adhesion of sound waves within the hole, which is also detrimental to noise absorption. Within the hole diameter range of 8mm to 12mm, the sound-absorbing holes 1022 can ensure sufficient sound wave passage while maintaining structural stability and sound absorption performance. After entering the hole, the sound waves will undergo sufficient friction and adhesion with the hole wall and the air inside the hole, thereby effectively converting sound energy into other forms of energy, achieving the purpose of noise reduction.

[0046] Moreover, this aperture range also takes into account the feasibility and cost-effectiveness of manufacturing. In actual production, an aperture range of 8mm to 12mm is easy to achieve with precision without significantly increasing manufacturing costs.

[0047] In the design of the press cover, not only were the dimensions of the sound-absorbing holes 1022 precisely designed, but the structure of the first inner component 102 was also innovated to optimize the installation and fixation of the second sound insulation component 2. Specifically, multiple protrusions 105 are spaced apart on the first inner component 102 facing the first inner sound insulation component 101. These protrusions 105 not only enhance the structural strength of the first inner component 102, but also cleverly form mounting positions for installing the second sound insulation component 2. Each protrusion 105 is precisely designed and laid out to ensure that it can provide a stable and reliable support point for installing and fixing the second inner component 202 in the second sound insulation component 2. During installation, the second inner component 202 is simply placed accurately on these protrusions 105, and the second inner component 202 is connected and fixed to the first inner component 102 by appropriate connection methods (such as bolt connection, welding or other fastening methods). This design not only simplifies the installation process and improves installation efficiency, but also ensures a tight fit and a relatively stable limiting structure between the second sound insulation component 2 and the first sound insulation component 1. This limiting structure can effectively prevent the second sound insulation component 2 from becoming loose or displaced after installation, thereby ensuring the overall stability and sound insulation effect of the compressor cover.

[0048] It should be noted that in the second sound insulation component 2, the positioning point 205 is set only in the second outer member 204 for positioning the installation of the second outer sound insulation component 203. This is because the position of the second inner member 202 can be effectively defined by the boss 105. At the same time, the position of the second inner sound insulation component 201 can be defined by the mounting position and the second inner member 202, thereby ensuring the accuracy of the installation position.

[0049] Optionally, the thickness of the air layer is between 4mm and 8mm. The thickness of the air layer is a crucial parameter, directly affecting the sound absorption performance and overall sound insulation effect of the resonant sound-absorbing structure. After numerous experiments and tests, a thickness range of 4mm to 8mm has been determined to be most suitable. When the air layer thickness is within this range, it can form an optimal synergistic effect with the sound-absorbing holes 1022 and the sound insulation material, thereby achieving effective absorption of mid-to-high frequency sounds. An air layer that is too thin may result in an excessively high resonant frequency, preventing some sound waves from being effectively absorbed; while an air layer that is too thick may increase the overall volume and weight of the structure, while reducing the sensitivity of the resonant sound-absorbing structure. Within a thickness range of 4mm to 8mm, the air layer provides sufficient space for sound waves to resonate and rub within it, effectively converting sound energy into other forms of energy. Simultaneously, this thickness range also ensures the stability of the structure and the feasibility of manufacturing.

[0050] Furthermore, the thickness of the air layer can be fine-tuned based on the specific compressor model, operating conditions, and noise reduction requirements. For example, for compressors with high noise levels or high operating frequencies, the thickness of the air layer can be appropriately increased to improve sound absorption; while for heat pump equipment with limited space or requiring lightweight design, the thickness of the air layer can be appropriately reduced to meet overall design requirements.

[0051] Generally, the first inner sound insulation component 101, the second inner sound insulation component 201, the first outer sound insulation component 103, and the second outer sound insulation component 203 are all sound-absorbing sponges, while the first inner component 102, the second inner component 202, the first outer component 104, and the second outer component 204 are all galvanized sheets. The thickness of the sound-absorbing sponge is set at 20mm, and the thickness of the galvanized sheet is set at 1.5mm. There is a 25mm gap between the inner and outer galvanized sheets, i.e., a 5mm air layer is reserved. This structure has a better sound insulation effect compared to a single-layer sheet metal or single sound-absorbing sponge structure.

[0052] On the other hand, a heat pump is also provided, including a compressor and a compressor shroud as described above, wherein a first inner sound insulation member 101 is wrapped around the outer peripheral wall of the compressor, and a second sound insulation component 2 is disposed on the top of the compressor.

[0053] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0054] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0055] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0056] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A press cover, characterized in that, The utility model relates to a sound insulation assembly for compressor, comprising: A first sound insulation assembly (1) is arranged circumferentially on the outer side of the compressor, and a second sound insulation assembly (2) is arranged on the top side of the compressor; the first sound insulation assembly (1) comprises a first inner sound insulation piece (101), a first inner component (102), a first outer sound insulation piece (103) and a first outer component (104) from inside to outside, and a gap is arranged between the first inner component (102) and the first outer sound insulation piece (103) to form an air layer.

2. The press cover of claim 1, wherein, The second sound insulation assembly (2) comprises a second inner sound insulation piece (201), a second inner component (202), a second outer sound insulation piece (203) and a second outer component (204) from inside to outside, and a gap is arranged between the second inner component (202) and the second outer sound insulation piece (203) to form an air layer.

3. The press cover of claim 2, wherein, A positioning gap (107) is arranged on the first inner component (102) for positioning the first outer sound insulation piece (103) and the first inner sound insulation piece (101); and / or a positioning point (205) is arranged on the second outer component (204) for positioning the second outer sound insulation piece (203).

4. The press cover of claim 1, wherein, The bottom of the first inner component (102) and the bottom of the first outer component (104) are connected by a fastener.

5. The press cover according to any one of claims 1-4, characterized in that, The first inner component (102) comprises a plurality of sheet metal pieces (1021) connected in sequence in the circumferential direction, and adjacent two sheet metal pieces (1021) are connected by a buckle structure (106), which comprises a buckle arranged on one of the sheet metal pieces (1021) and a clamping groove arranged on the other adjacent sheet metal piece (1021).

6. The press cover according to any one of claims 1-4, characterized in that, A plurality of sound absorption holes (1022) are arranged on the front end face and the side end face of the first inner component (102).

7. The press cover of claim 6, wherein, The hole diameter of the sound absorption hole (1022) is between 8mm and 12mm.

8. The press cover according to any one of claims 1-4, characterized in that, A plurality of bosses (105) are arranged on the first inner component (102) in the direction of the first inner sound insulation piece (101), and the bosses (105) form mounting positions for mounting the second sound insulation assembly (2).

9. The press cover according to any one of claims 1-4, characterized in that, The thickness of the air layer is between 4mm and 8mm.

10. A heat pump comprising a compressor, characterized in that The utility model also relates to a compressor cover comprising the sound insulation assembly according to any one of claims 1-9, wherein the first inner sound insulation piece (101) is wrapped around the outer peripheral wall of the compressor, and the second sound insulation assembly (2) is arranged on the top of the compressor.

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