Noise reduction acoustic package of compressor
By using a noise reduction chemical package made of polyester fiber cotton and EPDM rubber, the problem of insufficient high-frequency noise absorption capacity of electric compressors was solved, achieving effective absorption of high-frequency noise and vehicle weight reduction, while improving the weather resistance and sealing performance of the materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 祺迹汽车科技(广州)有限公司
- Filing Date
- 2025-05-16
- Publication Date
- 2026-04-24
AI Technical Summary
Existing acoustic packages for electric compressors are effective at absorbing low-frequency noise, but are less effective at absorbing high-frequency noise. Furthermore, their high material density hinders vehicle weight reduction and poses safety hazards.
The inner lining is made of polyester fiber cotton and the EPDM rubber shell is combined with Velcro to form a sealed noise reduction package. The polyester fiber cotton has excellent high-frequency noise absorption performance and good thermal insulation performance, and the shell material has good weather resistance.
It effectively absorbs high-frequency noise from the high-speed operation of the electric compressor, reduces noise levels, improves the overall vehicle lightweighting effect, enhances the weather resistance and sealing of materials, and adapts to the working environment of the electric compressor.
Smart Images
Figure CN224161812U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of automotive noise reduction technology, and more particularly to a noise reduction package for a compressor. Background Technology
[0002] In the field of new energy vehicles, the requirements for the NVH performance of the whole vehicle are getting higher and higher. As a noise source, the working noise of electric compressors is also attracting more and more attention. The noise generated by the compressor when it runs at high speed will become increasingly unacceptable if it is not absorbed and noise is reduced.
[0003] Among related technologies, the acoustic package for electric compressors has a good low-frequency sound absorption effect, but a poor ability to absorb high-frequency noise generated by the compressor during high-speed operation. Utility Model Content
[0004] To address or partially address the problems existing in related technologies, this application provides a noise reduction package for compressors that can improve the absorption of high-frequency noise.
[0005] This application provides a noise reduction package for a compressor, comprising: a first housing and a second housing detachably connected to the first housing, the first housing and the second housing together forming a receiving cavity for accommodating the compressor, the inner wall of the first housing being provided with a first inner lining layer, the inner wall of the second housing being provided with a second inner lining layer, both the first inner lining layer and the second inner lining layer being made of polyester fiber cotton, the end face of the first inner lining layer being in contact with the end face of the second inner lining layer, and the opening edge of the first housing being fitted onto the opening edge of the second housing.
[0006] Furthermore, the noise reduction package of the compressor also includes Velcro, through which the first housing and the second housing are detachably connected.
[0007] Furthermore, the hook and loop fasteners are multiple, and the multiple hook and loop fasteners are arranged at circumferential intervals.
[0008] Furthermore, the Velcro includes a loop fastener and a hook fastener, with the loop fastener disposed on one of the first housing and the second housing, and the hook fastener disposed on the other of the first housing and the second housing.
[0009] Furthermore, both the first and second housings are made of EPDM rubber.
[0010] Furthermore, the Shore hardness of the EPDM rubber is 95A±5A.
[0011] Furthermore, the density of the polyester fiber cotton is 24.7 kg / m3.
[0012] Furthermore, the inner wall of the first housing and / or the inner wall of the second housing are provided with positioning portions for abutting against the compressor.
[0013] Furthermore, the second housing is provided with a heat dissipation vent, an air inlet, an exhaust outlet, and a grounding wiring harness mounting position.
[0014] Furthermore, the second housing is provided with a connector port.
[0015] The technical solution provided in this application may include the following beneficial results: by making both the first inner liner and the second inner liner made of polyester fiber cotton, it has excellent absorption performance for high-frequency noise generated when the compressor is running at high speed, which can effectively reduce the high-frequency noise generated when the electric compressor is running at high speed. At the same time, the material also has good thermal insulation performance, which makes a considerable contribution to the energy consumption of heat pump air conditioners in ultra-low temperature environments. The end face of the first inner liner is fitted with the end face of the second inner liner, so that the two inner liners should form a seamless connection to ensure effective noise absorption in the area covered by the inner liner. The opening edge of the first shell is fitted onto the opening edge of the second shell to form a snap-fit, which increases the sealing and reliability of the acoustic package.
[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description
[0017] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.
[0018] Figure 1 This is a schematic diagram of the structure of the noise reduction package of the compressor shown in the embodiments of this application;
[0019] Figure 2 This is a cross-sectional view of the noise reduction package of the compressor shown in the embodiments of this application;
[0020] Figure 3 This is another cross-sectional view of the noise reduction package of the compressor shown in the embodiments of this application.
[0021] Reference numerals: 1-First housing, 11-Connector port, 2-Second housing, 21-Heat dissipation port, 22-Air inlet port, 23-Exhaust port, 24-Ground wire harness mounting position, 3-Receiving cavity, 4-First inner lining layer, 5-Second inner lining layer, 6-Hook and loop fastener, 7-Positioning part. Detailed Implementation
[0022] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.
[0023] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0024] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing 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, and therefore should not be construed as a limitation of this application.
[0025] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 according to the specific circumstances.
[0026] In related technologies, the acoustic lining of electric compressors typically uses recycled polyurethane foam, which has good low-frequency sound absorption but poor absorption of high-frequency noise generated during high-speed compressor operation. Since the operating noise of an electric compressor at low speeds is not significant, recycled polyurethane foam is not suitable for absorbing the high-frequency noise generated during high-speed compressor operation. Furthermore, recycled polyurethane foam has poor flame retardant properties, posing a safety hazard. Additionally, its high density hinders component weight reduction and increases overall vehicle energy consumption.
[0027] To address the aforementioned issues, embodiments of this application provide a noise reduction package for a compressor, which can improve the absorption capacity for high-frequency noise.
[0028] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.
[0029] like Figures 1 to 3 As shown, this application embodiment provides a noise reduction package for a compressor, including: a first housing 1 and a second housing 2 detachably connected to the first housing 1. The first housing 1 and the second housing 2 together enclose a receiving cavity 3 for accommodating the compressor. The inner wall of the first housing 1 is provided with a first inner lining layer 4, and the inner wall of the second housing 2 is provided with a second inner lining layer 5. Both the first inner lining layer 4 and the second inner lining layer 5 are made of polyester fiber cotton. The end face of the first inner lining layer 4 is attached to the end face of the second inner lining layer 5, and the opening edge of the first housing 1 is fitted onto the opening edge of the second housing 2.
[0030] By using polyester fiber cotton (PET) for both the first inner liner layer 4 and the second inner liner layer 5, the high-frequency noise generated during high-speed operation of the compressor can be effectively reduced. This material also has good thermal insulation properties, contributing significantly to the energy efficiency of the heat pump air conditioner in ultra-low temperature environments. Furthermore, its low density contributes to the overall lightweight design of the compressor acoustic package. The end faces of the first inner liner layer 4 and the second inner liner layer 5 are fitted together, ensuring a seamless connection between the two liner layers. This guarantees effective noise absorption within the covered area. The opening edge of the first housing 1 is fitted onto the opening edge of the second housing 2, forming a snap-fit connection that enhances the sealing and reliability of the acoustic package.
[0031] In some embodiments, such as Figure 1 As shown, the compressor's noise reduction kit also includes Velcro 6, through which the first housing 1 and the second housing 2 are detachably connected. The Velcro 6 connection facilitates the assembly and disassembly of the first housing 1 and the second housing 2, and also makes fastening easier.
[0032] In some embodiments, there are multiple hook and loop fasteners 6, which are circumferentially spaced. Specifically, the multiple hook and loop fasteners 6 are spaced along the connection between the first housing 1 and the second housing 2 to ensure the stability and reliability of the connection between the first housing 1 and the second housing 2.
[0033] In some embodiments, the Velcro 6 includes a loop fastener and a hook fastener, with the loop fastener disposed on one of the first housing 1 and the second housing 2, and the hook fastener disposed on the other of the first housing 1 and the second housing 2. For example, the loop fastener is disposed on the first housing 1 and the hook fastener is disposed on the second housing 2, or the loop fastener is disposed on the second housing 2 and the hook fastener is disposed on the first housing 1.
[0034] In some embodiments, both the first housing 1 and the second housing 2 are made of ethylene propylene diene monomer (EPDM) rubber. This material has excellent weather resistance, aging resistance, and stable chemical properties, making it more suitable for the working environment of electric compressors.
[0035] Optionally, the Shore hardness of EPDM rubber is 95A±5A.
[0036] In some embodiments, the density of the polyester fiber cotton is 24.7 kg / m³. This material has good high-frequency noise absorption performance, is environmentally friendly and recyclable, and has a low density, thus contributing to the lightweighting of the entire vehicle.
[0037] In some embodiments, such as Figure 2 As shown, the inner wall of the first housing 1 and / or the inner wall of the second housing 2 are provided with positioning portions 7 for contacting the compressor. Specifically, the two housings can be adapted to the external dimensions of the electric compressor, and the positioning portions 7 in a certain area of the housing fit against the compressor body to form an installation positioning. The positioning portions 7 are in contact with the compressor body, which can form an effective air area between the acoustic package and the electric compressor, which is beneficial for the heat dissipation of the electric compressor and the absorption of noise from the acoustic package, while also restricting the movement of the acoustic package.
[0038] In some embodiments, such as Figure 1 As shown, the second housing 2 is provided with a heat dissipation vent 21, an air inlet 22, an exhaust outlet 23, and a grounding harness mounting position 24. The heat dissipation vent 21 facilitates compressor heat dissipation; the air inlet 22 and exhaust outlet 23 facilitate the installation of the compressor's air inlet and exhaust pipes, matching the dimensions of the compressor's air inlet and exhaust interfaces, with gaps reserved here for heat dissipation; the grounding harness mounting position 24 is used for the installation of the grounding harness.
[0039] In some embodiments, such as Figure 1 As shown, the second housing 2 is provided with a connector port 11 for the compressor connector to pass through, and the size of the connector port 11 matches the compressor connector.
[0040] The noise reduction package for the compressor provided in this application has the following advantages:
[0041] The inner lining material is made of polyester fiber cotton, which has good absorption performance for high-frequency noise generated when the compressor is working at high speed, and contributes to the overall vehicle weight reduction.
[0042] The housing is made of EPDM rubber, which has excellent weather resistance, aging resistance, and stable chemical properties, making it more suitable for the working environment of electric compressors.
[0043] The acoustic package can be redesigned to match the electric compressor used, with noise reduction performance, coverage, installation size, weight, etc., making it more suitable for the selected electric compressor.
[0044] The first housing 1 covers the edge of the second housing 2, forming a snap-fit, which improves the sealing and reliability of the acoustic package.
[0045] The acoustic package is positioned in contact with the electric compressor body at the housing, which creates an effective air zone between the acoustic package and the electric compressor, resulting in better heat dissipation and noise absorption of the acoustic package.
[0046] The solution of this application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to this application. Furthermore, it is understood that the steps in the method of this application embodiment can be adjusted, combined, and deleted according to actual needs, and the modules in the device of this application embodiment can be combined, divided, and deleted according to actual needs.
[0047] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.
Claims
1. A noise reduction package for a compressor, characterized in that, include: A first housing and a second housing detachably connected to the first housing, the first housing and the second housing together enclose a receiving cavity for accommodating the compressor. The inner wall of the first housing is provided with a first inner lining layer, and the inner wall of the second housing is provided with a second inner lining layer. Both the first inner lining layer and the second inner lining layer are made of polyester fiber cotton. The end face of the first inner lining layer is attached to the end face of the second inner lining layer, and the opening edge of the first housing is fitted onto the opening edge of the second housing.
2. The noise reduction package for the compressor according to claim 1, characterized in that: It also includes Velcro, through which the first cover and the second cover are detachably connected.
3. The noise reduction package for the compressor according to claim 2, characterized in that: The hook and loop fasteners are multiple, and the multiple hook and loop fasteners are spaced apart circumferentially.
4. The noise reduction package for the compressor according to claim 2, characterized in that: The Velcro includes a loop fastener and a hook fastener. The loop fastener is provided on one of the first shell and the second shell, and the hook fastener is provided on the other of the first shell and the second shell.
5. The noise reduction package for the compressor according to claim 1, characterized in that: Both the first and second housings are made of EPDM rubber.
6. The noise reduction package for the compressor according to claim 5, characterized in that: The Shore hardness of the EPDM rubber is 95A±5A.
7. The noise reduction package for the compressor according to claim 1, characterized in that: The density of the polyester fiber cotton is 24.7 kg / m3.
8. The noise reduction package for the compressor according to claim 1, characterized in that: The inner wall of the first housing and / or the inner wall of the second housing are provided with positioning portions for contacting the compressor.
9. The noise reduction package for the compressor according to claim 1, characterized in that: The second housing is provided with a heat dissipation port, an air inlet port, an exhaust port, and a grounding wire harness mounting position.
10. The noise reduction package for the compressor according to claim 1, characterized in that: The second housing has a connector port.