Motor casing with noise reduction effect

Abstract

The utility model discloses a motor casing with noise reduction effect belongs to motor casing technical field, including shell, its inner wall is established with the clamping slot, inner shell is established in the shell, and its outer wall is provided with the end clamping in the clamping support plate of slot, spiral heat pipe, its sleeve is established in the inner shell, and its end detachable connection has the water receiving spare of protruding the shell, the composite sound absorption strip is set between the clamping support plate. Its technical key points are: through water receiving spare and spiral heat pipe are sealedly connected with external circulating cooling pump, under the action of cooling pump, cooling water flows in spiral heat pipe and then continuously takes away the heat transfer of inner shell, ensures its heat dissipation effect, in addition, the motor casing whole has stronger detachability, can when partial damage or composite sound absorption strip internal material ageing leads to sound absorption effect reduction, carry out convenient replacement to partial, and then play the role of reducing use cost, avoiding material waste.

Description

Technical Field

[0001] This utility model relates to the field of motor housing technology, specifically a motor housing with noise reduction effect. Background Technology

[0002] Motor housing noise reduction is a crucial method for lowering motor operating noise, primarily achieved by adding sound-insulating materials to the motor housing. For example, wrapping the motor housing with high-thickness polyurethane foam sound-absorbing material can effectively absorb and block noise transmission. Furthermore, designing structures such as sound-insulating panels, silencing holes, and sound-absorbing grooves can further enhance the noise reduction effect. These measures reduce electromagnetic, mechanical, and aerodynamic noise generated during motor operation, improving the comfort of the equipment's operating environment. Simultaneously, regular motor maintenance to ensure it is in good condition also helps reduce the generation of abnormal noise.

[0003] The utility model disclosed in CN213402689U is a fan geared motor housing based on noise control technology. It includes a housing body, a motor cavity within the housing body, a sound insulation layer on the inner wall of the motor cavity, and a silencing cavity within the side wall of the housing body. A silencing component is located on the side of the silencing cavity away from the motor cavity. Several heat dissipation components penetrating the sound insulation layer and the housing body are also provided on the housing body. When the motor is running, the sound insulation layer can initially filter noise. The filtered noise is buffered after entering the silencing cavity, and the silencing component located within the silencing cavity can absorb noise through reflection, refraction, or sound conversion, thereby further reducing the noise transmitted to the outside of the housing body.

[0004] While the aforementioned devices can buffer and absorb noise, thus reducing noise, their strong overall sealing necessitates sufficient heat dissipation measures to ensure complete heat dissipation during motor operation. However, these devices rely solely on a limited number of small heat sinks to dissipate heat from the entire motor cavity, resulting in low efficiency. Under high loads, the inability to dissipate internal heat can negatively impact normal operation. Furthermore, the device's integrated design means that damage to local structures or reduced effectiveness or failure of internal sound-absorbing and insulating materials necessitates replacement of the entire motor housing, indirectly increasing maintenance costs and leading to material waste. Therefore, to address these issues, a noise-reducing motor housing is proposed. Utility Model Content

[0005] To address the technical problems of low efficiency in heat dissipation measures for motor housings in comparative technologies, which makes it difficult to dissipate large amounts of heat in a timely manner, and the strong integration of the device, which indirectly increases the cost of use and maintenance and easily leads to material waste, this utility model provides a motor housing with noise reduction effect.

[0006] The technical solution adopted by the embodiments of this application to solve its technical problem is:

[0007] A motor housing with noise reduction effect includes an outer shell, the inner wall of which has several circumferentially arranged slots; an inner shell, which is disposed within the outer shell, and its outer wall is fixedly provided with several snap-fit ​​support plates corresponding to the slots, the ends of the snap-fit ​​support plates snapping into the slots; a spiral heat-absorbing tube, which is sleeved on the outer shell and fixedly connected to the snap-fit ​​support plates, and its end is detachably connected to a water-receiving component extending out of the outer shell; and a composite sound-absorbing strip, which is disposed between the snap-fit ​​support plates, and its two sides are attached and bonded to the snap-fit ​​support plates.

[0008] In one possible implementation, the composite sound-absorbing strip is composed of three layers of different materials arranged sequentially, from the inside out: a panel, a sound-absorbing cotton board, and a damping sound-insulating felt, wherein the panel has through holes arranged in an array.

[0009] In one possible implementation, support strips are fixedly provided on both sides of the snap-fit ​​support plate, and after the composite sound-absorbing strip is installed, the two sides of the panel are attached to the support strips.

[0010] In one possible implementation, the spiral heat absorber tube includes a spiral tube segment wound around the inner shell, both ends of which are bent outward and sealed with threaded joints at the ends, wherein the space between the spiral tube segment and the outer wall of the inner shell is filled with a thermally conductive filler.

[0011] In one possible implementation, the composite sound-absorbing strip corresponding to the threaded joint has a through hole that matches the size of the threaded joint, and the outer shell has a mating hole that matches the position of the through hole.

[0012] In one possible implementation, the water receiving component includes a water inlet that is threadedly connected to a threaded connector, and a sealing plug fitted over the water inlet to seal the mating hole.

[0013] In one possible implementation, a gap is left between the threaded joint and the outer shell when the inner shell is fully inserted into the outer shell.

[0014] In one possible implementation, sound-absorbing covers are provided at both the front and rear ends of the housing. Each of the front and rear ends of the housing has a plurality of connecting feet arranged in a circular array. The sound-absorbing covers are provided with corresponding connecting feet, and the sound-absorbing covers are bolted to the connecting feet of the housing via the connecting feet.

[0015] In summary, this utility model has the following beneficial technical effects:

[0016] By installing a spiral heat-absorbing tube on the outside of the inner shell, the heat generated during motor operation is absorbed and carried away while ensuring the overall airtightness of the motor shell to ensure its noise reduction effect. Specifically, the spiral tube section is sealed to the external circulating cooling pump through a water receiving component. Under the action of the cooling pump, the cooling water flows in the spiral tube section and continuously carries away the heat transferred from the inner shell, ensuring its heat dissipation effect. The thermally conductive filler can increase the contact area between the spiral tube section and the inner shell, further improving the heat transfer efficiency and facilitating better heat absorption by the cooling water in the spiral tube section.

[0017] Because the outer shell and inner shell are detachably connected by snapping the support plate into the slot, and the composite sound-absorbing strip used for sound absorption overlaps on the support strip between the snapping support plates, it is easy to pull the inner shell out of the outer shell, and also easy to separate the composite sound-absorbing strip from the snapping support plate. This structural design makes the motor housing highly detachable, and can be easily replaced when there is local damage or when the sound absorption effect is reduced due to aging of the internal material of the composite sound-absorbing strip, thereby reducing the cost of use and avoiding material waste. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0021] Figure 3 This is a partial structural schematic diagram of the present invention;

[0022] Figure 4 This is a schematic diagram of the composite sound-absorbing strip structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the outer shell structure of this utility model.

[0024] In the diagram: 1. Outer shell; 11. Connecting foot one; 12. Mating hole; 13. Slot; 2. Inner shell; 21. Snap-fit ​​support plate; 22. Support strip; 3. Spiral heat absorption tube; 31. Spiral tube section; 32. Threaded joint; 33. Thermally conductive filler; 4. Composite sound-absorbing strip; 41. Perforation; 401. Panel; 402. Sound-absorbing cotton board; 403. Damping sound insulation felt; 5. Water receiving part; 51. Water inlet; 52. Sealing plug; 6. Sound-absorbing cover; 61. Connecting foot two. Detailed Implementation

[0025] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0026] like Figure 1 , Figure 2 , Figure 5 As shown, this embodiment provides a motor housing with noise reduction effect, including an outer shell 1, whose inner wall has several circumferentially arranged slots 13; an inner shell 2, which is disposed in the outer shell 1, and whose outer wall is fixedly provided with several snap-fit ​​support plates 21 corresponding to the slots 13, the ends of the snap-fit ​​support plates 21 being snapped into the slots 13; a composite sound-absorbing strip 4, which is disposed between the snap-fit ​​support plates 21, and whose two sides are attached and bonded to the snap-fit ​​support plates 21; in addition, support strips 22 are fixedly provided on both sides of the snap-fit ​​support plates 21, and after the composite sound-absorbing strip 4 is installed, the two sides of the panel 401 are attached to the support strips 22.

[0027] Based on the above technical solution, since the outer shell 1 and the inner shell 2 are detachably connected by snapping the support plate 21 into the slot 13, and the composite sound-absorbing strip 4 for sound absorption overlaps on the support strip 22 between the support plates 21, it is easy to pull the inner shell 2 out of the outer shell 1, and it is also easy to separate the composite sound-absorbing strip 4 from the support plate 21. This structural solution makes the motor housing as a whole highly detachable, and can easily replace parts when there is local damage or when the sound absorption effect is reduced due to aging of the internal material of the composite sound-absorbing strip 4, thereby reducing the cost of use and avoiding material waste.

[0028] To ensure that the composite sound-absorbing strip 4 has good sound absorption effect and strong durability, the composite sound-absorbing strip 4 is composed of three layers of different materials in sequence, such as... Figure 4 As shown, from the inside out, the components are a panel 401, a sound-absorbing cotton board 402, and a damping sound insulation felt 403. The panel 401 has an array of through holes. In the above structure, the panel 401 and the damping sound insulation felt 403 can protect the sound-absorbing cotton board 402, preventing it from deforming or warping during installation and disassembly. During sound absorption, the panel 401 guides the noise into the sound-absorbing cotton board 402, where the noise is reflected and impacted, consuming the sound wave energy. The damping sound insulation felt 403 can further block and absorb the small amount of noise that passes through the sound-absorbing cotton board 402.

[0029] In order to ensure good heat dissipation of the motor housing, such as Figure 2 - Figure 3As shown, the motor housing with noise reduction effect provided in this embodiment also includes a spiral heat absorption tube 3, which is sleeved on the outer shell 2 and fixedly connected to the snap-fit ​​support plate 21. Its end is detachably connected to a water receiving part 5 extending out of the outer shell 1. The spiral heat absorption tube 3 is sealed to the external circulating cooling pump through the water receiving part 5. Under the action of the cooling pump, the cooling water flows in the spiral heat absorption tube 3 and continuously carries away the heat transferred from the inner shell 2, ensuring its heat dissipation effect.

[0030] Among them, such as Figure 3 As shown, the spiral heat absorption tube 3 includes a spiral tube section 31 wound around the inner shell 2, both ends of which are bent outward and connected to a threaded joint 32 at the end. The spiral tube section 31 and the outer wall of the inner shell 2 are filled with a thermally conductive filler 33. The thermally conductive filler 33 can increase the contact area between the spiral tube section 31 and the inner shell 2, further improve the heat transfer efficiency, and facilitate better heat absorption by the cooling water of the spiral tube section 31.

[0031] To prevent the threaded connector 32 from colliding with the outer shell 1 during the installation of the inner shell 2, which would prevent the inner shell 2 from being inserted smoothly, the following structural dimensional requirements must be met: when the inner shell 2 is fully inserted into the outer shell 1, there is a gap between the threaded connector 32 and the outer shell 1. Based on the above structural characteristics, it can be ensured that the threaded connector 32 does not collide with the outer shell 1 when the inner shell 2 is inserted.

[0032] Based on the above scheme, in order to realize the installation of some composite sound-absorbing strips 4 and water-receiving parts 5, the composite sound-absorbing strips 4 corresponding to the threaded connector 32 are provided with through holes 41 that match the size of the threaded connector 32, and the outer shell 1 is provided with mating holes 12 that match the position of the through holes 41. The through holes 41 are used to insert the water-receiving parts 5 so that they are sealed to the corresponding threaded connector 32, and the mating holes 12 are used to allow the water-receiving parts 5 to pass through the outer shell 1.

[0033] Correspondingly, such as Figure 3 As shown, the water receiving component 5 includes a water receiving nozzle 51 that is threadedly connected to the threaded connector 32, and a sealing plug 52 that is sleeved outside the water receiving nozzle 51. The sealing plug 52 is used to seal the mating hole 12. The above-mentioned structural solution can prevent noise from being transmitted from the mating hole 12.

[0034] like Figure 1 , Figure 5 As shown, sound-absorbing covers 6 are provided at both the front and rear ends of the outer shell 1. Several connecting feet 11 arranged in a circular array are provided at both the front and rear ends of the outer shell 1. The sound-absorbing covers 6 are provided with corresponding connecting feet 61. The sound-absorbing covers 6 are bolted to the connecting feet 11 of the outer shell 1. The above structure can encapsulate the end of the motor housing through the sound-absorbing covers 6, preventing noise from being transmitted from the gaps at both ends of the outer shell 1 and the inner shell 2.

[0035] The working principle and usage process of this utility model:

[0036] Under the action of the cooling pump, the cooling water flows in the spiral tube section 31 and continuously carries away the heat transferred from the inner shell 2, ensuring its heat dissipation effect. The thermally conductive filler 33 can increase the contact area between the spiral tube section 31 and the inner shell 2, further improve the heat transfer efficiency, and facilitate the cooling water of the spiral tube section 31 to absorb heat better.

[0037] Since the outer shell 1 and the inner shell 2 are detachably connected by snapping the support plate 21 into the slot 13, and the composite sound-absorbing strip 4 for sound absorption overlaps the support strip 22 between the support plates 21, it is easy to pull the inner shell 2 out of the outer shell 1, and it is also easy to separate the composite sound-absorbing strip 4 from the support plate 21. This structural solution makes the motor housing highly detachable, and can easily replace parts when there is local damage or when the sound absorption effect is reduced due to aging of the internal material of the composite sound-absorbing strip 4, thereby reducing the cost of use and avoiding material waste.

[0038] Furthermore, in the structure of the composite sound-absorbing strip 4, the panel 401 and the damping sound insulation felt 403 can protect the sound-absorbing cotton board 402 installed therein, preventing it from being deformed or warped during installation and disassembly. When absorbing sound, the panel 401 guides the noise into the sound-absorbing cotton board 402, where the noise is reflected and impacted, consuming the sound wave energy. The damping sound insulation felt 403 can further block and absorb the small amount of noise that passes through the sound-absorbing cotton board 402.

[0039] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A motor housing with noise reduction effect, characterized in that, include: The outer shell (1) has several slots (13) arranged in a circular array on its inner wall; The inner shell (2) is set in the outer shell (1), and its outer wall is fixedly provided with several snap-fit ​​support plates (21) corresponding to the slots (13), and the ends of the snap-fit ​​support plates (21) are snapped into the slots (13); The spiral heat absorption tube (3) is sleeved outside the inner shell (2) and fixedly connected to the snap-fit ​​support plate (21). Its end is detachably connected to a water receiving part (5) that extends out of the outer shell (1). The composite sound-absorbing strip (4) is set between the snap-fit ​​support plates (21), and its two sides are attached and bonded to the snap-fit ​​support plates (21).

2. The motor housing with noise reduction effect according to claim 1, characterized in that: The composite sound-absorbing strip (4) is composed of three layers of different materials in sequence, from the inside out: panel (401), sound-absorbing cotton board (402) and damping sound insulation felt (403), wherein the panel (401) is provided with an array of through holes.

3. A motor housing with noise reduction effect according to claim 2, characterized in that: Both sides of the snap-fit ​​support plate (21) are fixedly provided with support strips (22). After the composite sound-absorbing strip (4) is installed, both sides of the panel (401) are attached to the support strips (22).

4. The motor housing with noise reduction effect according to claim 1, characterized in that: The spiral heat-absorbing tube (3) includes a spiral tube section (31) wound around the inner shell (2), both ends of which are bent outward and connected to a threaded joint (32) in a sealed manner. The spiral tube section (31) and the outer wall of the inner shell (2) are filled with a thermally conductive filler (33).

5. A motor housing with noise reduction effect according to claim 4, characterized in that: The composite sound-absorbing strip (4) corresponding to the threaded connector (32) has a through hole (41) matching the size of the threaded connector (32), and the outer shell (1) has a mating hole (12) matching the position of the through hole (41).

6. A motor housing with noise reduction effect according to claim 5, characterized in that: The water receiving component (5) includes a water receiving nozzle (51) that is threadedly connected to the threaded connector (32), and a sealing plug (52) sleeved on the water receiving nozzle (51) to seal the mating hole (12).

7. A motor housing with noise reduction effect according to claim 4, characterized in that: When the inner shell (2) is fully inserted into the outer shell (1), there is a gap between the threaded joint (32) and the outer shell (1).

8. A motor housing with noise reduction effect according to claim 1, characterized in that: The outer shell (1) is provided with sound-absorbing cover plates (6) at both the front and rear ends. The outer shell (1) is provided with several connecting feet (11) arranged in a circular array at both the front and rear ends. The sound-absorbing cover plate (6) is provided with corresponding connecting feet (61). The sound-absorbing cover plate (6) is bolted to the connecting feet (11) of the outer shell (1).

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