Electric control box of refrigerator and refrigerator
By adding a mass block to the inner wall of the electrical control box cover, the problem of low-frequency noise absorption by the electrical control board is solved by using resonance to absorb noise, thus achieving noise reduction across the entire frequency band while maintaining the heat dissipation performance of the circuit board.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-04-14
AI Technical Summary
The noise emitted by the existing refrigerator control board, especially the low-frequency noise, is difficult to be effectively absorbed by sound-absorbing cotton. In addition, too much sound-absorbing cotton will affect the heat dissipation of the circuit board, resulting in limited noise reduction effect and shortened lifespan.
Mass blocks are added to the inner wall of the cover of the electrical control box. These mass blocks resonate under the excitation of sound waves to absorb and reduce noise. By setting mass blocks with different natural frequencies, the noise reduction frequency band is widened and the noise reduction effect is improved.
It effectively absorbs noise from the control board, broadens the noise reduction frequency band, reduces the sound energy radiated outward from the control box, improves the noise reduction effect, and avoids the negative impact on the heat dissipation of the circuit board.
Smart Images
Figure CN224121496U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of refrigerator technology, and particularly relates to an electronic control box for a refrigerator and a refrigerator. Background Technology
[0002] Currently, noise from refrigerator control boards is typically reduced by attaching sound-absorbing cotton to the inner wall of the control box. However, while sound-absorbing cotton is effective at absorbing mid-to-high frequency noise, it is less effective at absorbing low-frequency noise below 1kHz, resulting in limited noise reduction. Furthermore, excessive use of sound-absorbing cotton can negatively impact heat dissipation from the circuit board inside the control box, reducing its lifespan. Utility Model Content
[0003] This application provides an electronic control box for a refrigerator and a refrigerator, which can solve the technical problem that the electronic control box of a refrigerator cannot effectively isolate the noise emitted by the circuit board.
[0004] To achieve the above objectives, this application provides the following technical solution:
[0005] An electrical control box for a refrigerator includes:
[0006] The box body forms an open receiving space for accommodating the refrigerator's electronic control board;
[0007] A cover, detachably fitted onto the box body for closing the opening, the cover including a mounting wall adapted to face the receiving space;
[0008] Multiple mass blocks, adapted to be connected to the mounting wall and used to resonate under the excitation of sound waves, wherein at least two of the multiple mass blocks have different natural frequencies.
[0009] In some embodiments, the mounting wall has a plurality of mounting slots, each of which is adapted to accommodate at least one of the mass blocks.
[0010] In some embodiments, the cover is made of metal or plastic, and the mass block is made of one or more composite materials selected from metal, stone, and rubber.
[0011] In some embodiments, both the mass block and the cover are made of metal, and the density of the mass block is greater than the density of the cover.
[0012] In some embodiments, the cover is made of steel, the plurality of mass blocks are made of copper, and at least two of the mass blocks have different volumes.
[0013] In some embodiments, each of the mass blocks is shaped as a prism, cylinder, pyramid, cone, or sphere.
[0014] In some embodiments, the mounting wall is provided with a plurality of first connecting portions at intervals, and each mass block is provided with a second connecting portion, the second connecting portion being adapted to be detachably connected to any one of the plurality of first connecting portions, so that the mass block is installed at a corresponding position on the mounting wall.
[0015] In some embodiments, one of the first connecting portion and the second connecting portion is a snap fastener, and the other is a slot; or
[0016] One of the first connecting part and the second connecting part is a threaded hole, and the other is a stud.
[0017] In some embodiments, a plurality of the first connecting portions are evenly distributed on the mounting wall.
[0018] A refrigerator includes the aforementioned control box, the control box being adapted to house the refrigerator's control board.
[0019] The refrigerator control box and refrigerator provided in this application embodiment have a mass block added to the inner wall of the lid. When the control board inside the box operates and emits noise, the mass block contacts the sound waves, generating local resonance to reduce the sound energy radiated outward from the lid, thus achieving a noise reduction effect. In addition, by simultaneously setting mass blocks with different natural frequencies on the lid, the noise reduction frequency band of the control box can be widened, improving the noise reduction effect of the control box. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments 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.
[0021] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.
[0022] Figure 1 This is a schematic diagram of the structure of the electrical control box provided in an embodiment of this application.
[0023] Figure 2 This application provides a schematic diagram of the structure of the electronic control board assembled in the electronic control box.
[0024] Figure 3 This is a schematic diagram of the structure of the cover provided in an embodiment of this application.
[0025] Figure 4 This is a schematic diagram of the structure of the mass block provided in an embodiment of this application.
[0026] Figure 5 This is a schematic diagram of the structure of a refrigerator provided in an embodiment of this application.
[0027] Explanation of reference numerals in the attached figures:
[0028] 10. Refrigerator;
[0029] 100. Electrical control box; 200. Electrical control board;
[0030] 110. Box body; 120. Lid body; 130. Mass block;
[0031] 111. Opening; 112. Accommodation space; 121. Mounting wall; 122. Mounting groove; 123. First connecting part; 131. Second connecting part. Detailed Implementation
[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0033] For example, please refer to Figures 1-2 , Figure 1 This is a schematic diagram of the structure of the electrical control box provided in the embodiments of this application. Figure 2 This application provides a schematic diagram of the structure of the control board assembled in the control box. The control box 100 of the refrigerator 10 includes a box body 110, a cover 120, and a plurality of mass blocks 130.
[0034] The box body 110 forms a receiving space 112 with an opening 111 for receiving the electronic control board 200 of the refrigerator 10; the cover 120 is detachably covered on the box body 110 for closing the opening 111, and the cover 120 includes a mounting wall 121 facing the receiving space 112; a plurality of mass blocks 130 are adapted to be connected to the mounting wall 121 and are used to resonate under the excitation of sound waves, wherein at least two of the plurality of mass blocks 130 have different natural frequencies.
[0035] It should be noted that the mass block 130 in this application is a block with a certain mass, such as a metal block or a stone block. Compared with sound-absorbing cotton of the same volume, the mass block 130 in this application has a much greater weight than the sound-absorbing cotton, and the natural frequency of the mass block 130 in this application is much lower than the natural frequency of the sound-absorbing cotton. When the mass block 130 is connected to the mounting wall 121, it can form a mass spring system, that is, a local resonance unit. The noise generated when the circuit board is working will propagate outward through the cover 120. When the frequency of the sound wave is consistent with the natural frequency of the local resonance unit formed by the mass block 130 on the cover 120, the local resonance unit will resonate locally to absorb the sound energy, thereby reducing the sound energy radiated outward by the cover 120 and achieving the effect of noise reduction.
[0036] Understandably, at least two of the multiple mass blocks 130 have different natural frequencies, and the mass blocks 130 with different natural frequencies are used to absorb sound waves of different frequencies. In this way, the noise reduction frequency band of the control box 100 is broadened, and the noise reduction effect of the control box 100 is improved.
[0037] In practical applications, noise data from the control board 200 can be obtained through noise detection to analyze the corresponding noise reduction requirements. Based on these requirements, mass blocks 130 with specific inherent frequencies, quantities, and installation positions can be configured for the control box 100 to achieve excellent noise reduction performance. For example, for a control board 200 generating noise across the entire frequency range, mass blocks 130 with high-frequency inherent frequencies, mid-frequency inherent frequencies, and low-frequency inherent frequencies can be configured simultaneously to achieve full-frequency noise reduction. Alternatively, instead of configuring high-frequency mass blocks 130 in the control box 100, sound-absorbing cotton can be placed inside to absorb high-frequency noise. Furthermore, when the noise generated by the control board 200 at a certain frequency is relatively large, the noise reduction efficiency for that frequency can be improved by increasing the number of mass blocks 130 with inherent frequencies belonging to that frequency. Furthermore, for areas on the cover 120 where relatively more noise waves are received, a better noise reduction effect can be achieved by setting more mass blocks 130 in those areas.
[0038] The electrical control box 100 provided in this embodiment has a mass block 130 added to the inner wall of the cover 120. When the electrical control board 200 inside the box 110 operates and generates noise, the mass block 130 contacts the sound waves and generates local resonance, thereby reducing the sound energy radiated outward from the cover 120 and achieving a noise reduction effect. In addition, by simultaneously providing mass blocks 130 with different inherent frequencies on the cover 120, the noise reduction frequency band of the electrical control box 100 can be widened, and the noise reduction effect of the electrical control box 100 can be improved.
[0039] In some embodiments, the mounting wall 121 has a plurality of mounting slots 122, each mounting slot 122 being adapted to accommodate at least one mass block 130. It should be noted that "each mounting slot 122 is adapted to accommodate at least one mass block 130" means that the mass block 130 does not include any portion protruding outside the mounting slot 122; that is, along the thickness direction of the mounting wall 121, the height of the mass block 130 accommodated in each mounting slot 122 is less than or equal to the depth of the slot it is in. This avoids the possibility of some of the mass blocks 130 protruding from the mounting wall 121, which could cause interference between the mass blocks 130 and the control board 200 during installation, preventing the cover 120 from properly closing the opening 111. For example, as... Figure 2 As shown, the electrical control box 100 is equipped with four types of mass blocks 130 with different heights, and four mounting slots 122 with different depths are provided on the mounting wall 121. Each mounting slot 122 is suitable for accommodating a mass block 130 with a corresponding height.
[0040] Optionally, the cover 120 is made of metal or plastic, and the mass block 130 is composed of one or more composite materials selected from metal, stone, and rubber. Preferably, both the mass block 130 and the cover 120 are made of metal, and the density of the mass block 130 is greater than that of the cover 120. Thus, by using a high-density mass block 130, the local resonance effect of the local resonance unit can be improved, the vibration of the cover 120 can be reduced, and the noise reduction effect of the control box 100 can be enhanced. For example, the cover 120 is made of steel, and multiple mass blocks 130 are made of copper, with at least two mass blocks 130 having different volumes. The two copper mass blocks 130 with different volumes have different natural frequencies. The larger the volume of the copper mass block 130, the greater its weight, and the lower its natural frequency, making it suitable for eliminating relatively low-frequency sound waves in noise; the smaller the volume of the copper mass block 130, the smaller its weight, and the higher its natural frequency, making it suitable for eliminating relatively high-frequency sound waves in noise.
[0041] Optionally, each mass block 130 may be shaped as a prism, cylinder, pyramid, cone, or sphere. For example, multiple mass blocks 130 may all be cuboids.
[0042] In some embodiments, please refer to Figures 3-4 , Figure 3 This is a schematic diagram of the structure of the cover provided in an embodiment of this application. Figure 4This is a schematic diagram of the structure of the mass block provided in an embodiment of this application. A plurality of first connecting portions 123 are spaced apart on the mounting wall 121, and each mass block 130 is provided with a second connecting portion 131. The second connecting portion 131 is adapted to be detachably connected to any one of the plurality of first connecting portions 123, so that the mass block 130 is installed at a corresponding position on the mounting wall 121. In practical applications, because the mounting wall 121 is provided with a plurality of first connecting portions 123, each mass block 130 can be installed at any position on the mounting wall 121 where a first connecting portion 123 is provided via the second connecting portion 131. Therefore, the cover 120 can adapt to various configurations of the mass blocks 130, improving the versatility of the cover 120. Furthermore, since the mass blocks 130 are all detachably installed on the mounting wall 121, designers can easily adjust the specific configuration of the mass blocks 130 according to actual noise reduction requirements, so that the noise reduction effect of the electrical control box 100 reaches its optimal level. Preferably, the plurality of first connecting portions 123 are evenly distributed on the mounting wall 121.
[0043] Optionally, one of the first connecting part 123 and the second connecting part 131 is a snap-fit and the other is a slot. The snap-fit is adapted to be detachably snapped into the slot so that the mass block 130 can be detachably installed on the mounting wall 121; or one of the first connecting part 123 and the second connecting part 131 is a threaded hole and the other is a stud. The stud is adapted to be screwed into the threaded hole so that the mass block 130 can be detachably installed on the mounting wall 121.
[0044] The electrical control box 100 provided in this embodiment has a mass block 130 added to the inner wall of the cover 120. When the electrical control board 200 inside the box 110 operates and generates noise, the mass block 130 contacts the sound waves and generates local resonance, thereby reducing the sound energy radiated outward from the cover 120 and achieving a noise reduction effect. In addition, by simultaneously providing mass blocks 130 with different inherent frequencies on the cover 120, the noise reduction frequency band of the electrical control box 100 can be widened, and the noise reduction effect of the electrical control box 100 can be improved.
[0045] This application also provides a refrigerator 10, for example, please refer to [link to example]. Figure 5 , Figure 5 This is a schematic diagram of the structure of a refrigerator provided in an embodiment of this application. The refrigerator can be as follows: Figure 5 The French-style refrigerator shown can also be a side-by-side refrigerator, a cross-door refrigerator, or other types of refrigerators. Refrigerator 10 includes the electrical control box 100 in any of the above embodiments, and the electrical control box 100 is adapted to house the electrical control board 200 of refrigerator 10.
[0046] The refrigerator 10 provided in this application embodiment adds a mass block 130 to the inner wall of the cover 120 of the electronic control box 100. When the electronic control board 200 inside the box 110 operates and emits noise, the mass block 130 contacts the sound waves and generates local resonance, thereby reducing the sound energy radiated outward from the cover 120 and thus reducing the noise of the refrigerator 10. In addition, by simultaneously providing mass blocks 130 with different natural frequencies on the cover 120, the noise reduction frequency band of the electronic control box 100 can be widened, and the noise reduction effect of the electronic control box 100 can be improved.
[0047] The above provides a detailed description of the refrigerator's electrical control box and the refrigerator provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. An electrical control box for a refrigerator, characterized in that, include: The box body forms an open receiving space for accommodating the refrigerator's electronic control board; A cover, detachably fitted onto the box body for closing the opening, the cover including a mounting wall adapted to face the receiving space; Multiple mass blocks, adapted to be connected to the mounting wall and used to resonate under the excitation of sound waves, wherein at least two of the multiple mass blocks have different natural frequencies.
2. The electronic control box of the refrigerator according to claim 1, characterized in that, The mounting wall has multiple mounting slots, each of which is adapted to accommodate at least one of the mass blocks.
3. The electronic control box of the refrigerator according to claim 1, characterized in that, The cover is made of metal or plastic, and the mass block is made of one of the following materials: metal, stone, or rubber.
4. The electronic control box of the refrigerator according to claim 1, characterized in that, Both the mass block and the cover are made of metal, and the density of the mass block is greater than the density of the cover.
5. The electronic control box of the refrigerator according to claim 1, characterized in that, The cover is made of steel, the mass blocks are made of copper, and at least two of the mass blocks have different volumes.
6. The electronic control box of the refrigerator according to claim 1, characterized in that, Each of the mass blocks is shaped as a prism, cylinder, pyramid, cone, or sphere.
7. The electronic control box of the refrigerator according to any one of claims 1-6, characterized in that, The mounting wall is provided with a plurality of first connecting parts at intervals, and each mass block is provided with a second connecting part. The second connecting part is adapted to be detachably connected to any one of the plurality of first connecting parts, so that the mass block is installed at a corresponding position on the mounting wall.
8. The electronic control box of the refrigerator according to claim 7, characterized in that, One of the first connecting part and the second connecting part is a snap fastener, and the other is a slot; or One of the first connecting part and the second connecting part is a threaded hole, and the other is a stud.
9. The electronic control box of the refrigerator according to claim 7, characterized in that, Multiple first connecting parts are evenly distributed on the mounting wall.
10. A refrigerator, characterized in that, Includes the electrical control box according to any one of claims 1-9, the electrical control box being adapted to house the electrical control board of the refrigerator.