CN210886638U

CN210886638U - Noise reduction structure and washing machine

Info

Publication number: CN210886638U
Application number: CN201921670814.0U
Authority: CN
Inventors: 袁阿辉; 杨洪永; 熊瑞; 陈坦; 马祥龙; 刘剑
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-06-30
Anticipated expiration: 2029-10-08

Abstract

The utility model provides a structure, washing machine of making an uproar falls. One of them kind of structure of making an uproar falls, including motor installation carrier, be provided with the motor on the terminal surface of motor installation carrier, still include the vacuum sound-proof housing, the vacuum sound-proof housing cover is located the outside of motor, just the vacuum sound-proof housing with can dismantle the connection between the motor installation carrier. The utility model discloses a structure, washing machine of making an uproar falls can effectively reduce the motor noise to stop the adverse effect that motor noise brought to the user when its operation.

Description

Noise reduction structure and washing machine

Technical Field

The utility model belongs to the technical field of washing machine makes, concretely relates to structure, washing machine of making an uproar falls.

Background

With the increase of the requirement of people for living quality, the noise level becomes an important index when consumers buy washing machine products, and for the washing machine, the attention of users to the noise level of the products gradually rises, and the attention is in the same position as the attention to the performance. In recent years, the highest complaint index of consumers is the noise problem, and the reduction of the noise of the washing machine is the call of consumers and is also a technical problem to be solved.

The noise-generating part of the washing machine has the following aspects: the noise reduction device comprises a washing machine suspension system, motor noise, water inlet and drain system noise and box body vibration noise, wherein the motor noise is the most main noise source and specifically comprises electromagnetic noise, mechanical noise and airflow noise. The size of the noise of the washing machine in the current market completely depends on the size of the noise of the motor, and no good noise reduction measure is provided except for attaching sound absorption cotton on the side plates.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model is to provide a structure of making an uproar, washing machine fall can effectively reduce the motor noise to stop the adverse effect that motor noise brought to the user when its operation.

In order to solve the problem, the utility model provides a structure of making an uproar falls, including motor installation carrier, be provided with the motor on the terminal surface of motor installation carrier, still include the vacuum sound-proof housing, the vacuum sound-proof housing cover is located the outside of motor, just the vacuum sound-proof housing with can dismantle the connection between the motor installation carrier.

Preferably, the vacuum sound-proof housing has an outer side housing body away from one side of the motor and an inner side housing body close to one side of the motor, the outer side housing body is connected with an edge of an opposite side of the inner side housing body to form a closed cavity, and a vacuum is formed in the closed cavity.

Preferably, the vacuum sound-proof cover is also provided with an air exhaust part.

Preferably, a plurality of acoustic bridges are further arranged in the closed cavity, and the acoustic bridges are connected between the outer side cover body and the inner side cover body in a supporting mode.

Preferably, the vacuum insulation enclosure has a motor receiving cavity.

Preferably, a damping sound absorption layer is arranged on the inner side wall of the motor accommodating cavity.

Preferably, the damping sound absorption layer comprises damping fins.

Preferably, the damping disc is formed with a plurality of lightening holes.

Preferably, the inner side of the damping sound absorption layer is provided with a sound attenuation cotton layer.

Preferably, the noise reduction structure further comprises a micro-perforated part, the micro-perforated part is arranged on the silencing cotton layer far away from one side of the damping sound absorption layer, and an air layer is arranged between the micro-perforated part and the silencing cotton layer.

Preferably, the vacuum soundproof cover further has an insertion portion extending toward one side of the motor mounting carrier, and the motor mounting carrier is configured with an insertion groove matching with the insertion portion.

Preferably, the noise reduction structure further comprises a sealing ring, wherein the sealing ring is arranged in the embedded groove and is positioned between the bottom wall of the embedded groove and the embedded part.

Preferably, an attachment portion is provided on an outer peripheral side of the vacuum soundproof cover.

Preferably, the noise reduction structure further includes a cooling member having a cooling pipe on the end surface and in a space covered by the vacuum soundproof cover.

Preferably, the cooling tube is disposed around an exterior of the electric machine; and/or the cooling part further comprises a water storage tank, and cooling water circulation is formed between the water storage tank and the cooling pipe.

The utility model also provides a washing machine, including foretell structure of making an uproar that falls, just motor installation carrier is a washing machine back section of thick bamboo.

The utility model provides a pair of structure, washing machine of making an uproar falls utilizes the effect of vacuum sound-proof housing sound insulation, establishes the motor casing in it, adopt vacuum sound-proof housing detachable with the motor installation carrier is connected the noise reduction that makes the motor and is handled more reliable and simple, and vacuum sound-proof housing can the vacuum sound insulation effect of make full use of effectively reduce the external radiation noise of motor simultaneously, and when it was applied to in the washing machine, it can stop the adverse effect that the motor noise brought the user when washing machine was in the operation.

Drawings

Fig. 1 is a schematic cross-sectional structure view of a noise reduction structure according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is an exploded schematic view of a noise reduction structure according to another embodiment of the present invention;

FIG. 4 is a schematic view of the assembled structure of FIG. 3;

FIG. 5 is a schematic side view of the vacuum acoustic enclosure of FIG. 1;

FIG. 6 is a left side view of FIG. 5;

fig. 7 is a schematic view illustrating the installation of a cooling pipe in a noise reduction structure according to still another embodiment of the present invention.

The reference numerals are represented as:

1. a motor mounting carrier; 2. a motor; 3. a vacuum sound-proof housing; 31. an outer cover body; 32. an inner cover body; 33. sealing the cavity; 34. an air extraction part; 35. an acoustic bridge; 36. an embedding part; 37. an installation part; 38. a motor accommodating cavity; 4. a seal ring; 5. a damping sound absorbing layer; 6. a sound-deadening cotton layer; 7. a microperforated member; 71. An air layer; 81. a cooling tube; 82. a water storage tank; 83. and (4) a water pump.

Detailed Description

With reference to fig. 1 to 7, according to an embodiment of the present invention, a noise reduction structure is provided, including a motor mounting carrier 1, a motor 2 is disposed on a terminal surface of the motor mounting carrier 1, the noise reduction structure further includes a vacuum sound-proof cover 3, the vacuum sound-proof cover 3 covers the motor 2, and the vacuum sound-proof cover 3 is detachably connected to the motor mounting carrier 1, and it can be understood that the motor mounting carrier 1 may be various according to different application occasions, for example, a rear drum of a washing machine, etc. in the present invention. In the technical scheme, the motor 2 is covered in the vacuum sound-proof cover 3 by utilizing the sound-proof function of the vacuum sound-proof cover, the vacuum sound-proof cover 3 is detachably connected with the motor installation carrier 1, so that the noise reduction treatment of the motor is simpler and easier to implement, meanwhile, the vacuum sound-proof cover 3 can effectively reduce the external radiation noise of the motor by fully utilizing the vacuum sound-proof function, and when the vacuum sound-proof cover is applied to a washing machine, the adverse effect of the motor noise on a user when the washing machine operates can be avoided. Specifically, as a specific embodiment of the vacuum sound-proof housing 3, the vacuum sound-proof housing 3 has an outer housing 31 far away from one side of the motor 2 and an inner housing 32 close to one side of the motor 2, the outer housing 31 and the inner housing 32 are connected at their opposite side edges to form a closed cavity 33, and a vacuum is formed in the closed cavity 33, at this time, the vacuum sound-proof housing 3 forms a plate-vacuum-plate sound-proof model, which greatly reduces the transmission amount of sound energy at this point. The material of the vacuum soundproof cover 3 should have a certain strength, and for example, steel, aluminum, PC board, or the like can be used.

Further, still be provided with bleed part 34 on the vacuum sound-proof housing 3, bleed part 34 can integrated into one piece be in on the outer cover body 31, can also adopt the mode of dismantling to assemble, through setting up bleed part 34 forms the vacuum environment of closed cavity 33, and more importantly, vacuum sound-proof housing 3 is in the use difficult exemption take place the small leakage and when long-time operation, the vacuum in the closed cavity 33 will descend, through bleed part 34 can in time compensate the reduction difference of vacuum.

Preferably, a plurality of acoustic bridges 35 are further disposed in the closed cavity 33, the acoustic bridges 35 are supported and connected between the outer side cover 31 and the inner side cover 32, the acoustic bridges 35 are configured to effectively support the outer side cover 31 and the inner side cover 32, so as to prevent the outer side cover 31 and the inner side cover 32 from being damaged by external pressure, and meanwhile, on the premise of the same vacuum degree requirement, requirements of the outer side cover 31 and the inner side cover 32 on material and strength are reduced, so as to reduce production cost, while the acoustic bridges 35 are not excessively disposed, so as to reduce the amount of noise at the side of the inner side cover 32 transmitted to the outer side cover 31 through the acoustic bridges 35 as much as possible. The cross-section of the acoustic bridge 35 and the arrangement of the plurality of acoustic bridges 35 may be varied, such as circular, square, triangular, hexagonal, etc., to minimize the acoustic energy transmitted thereby.

As an alternative, the motor mounting carrier 1 may be configured with a corresponding motor receiving structure to accommodate the motor 2 therein, and the vacuum sound insulation cover 3 may be designed as a flat plate structure, and the vacuum sound insulation cover 3 of the flat plate structure is sealed at the opening of the motor receiving structure to close the motor receiving structure, so as to achieve effective sound insulation and noise reduction, but this approach will require a structural change of the motor mounting carrier 1, which is not favorable for direct modification of the motor noise reduction structure in the existing corresponding product, and more preferably, the vacuum sound insulation cover 3 has a motor receiving cavity 38, that is, most of the motor 2 at this time will be in the motor receiving cavity 38, and this approach can be achieved without making a great improvement on the existing structure of the corresponding product.

In order to further optimize the sound insulation and noise reduction effects of the vacuum sound insulation cover 3, preferably, a damping sound absorption layer 5 is disposed on the inner side wall of the motor accommodating cavity 38, the damping sound absorption layer 5 may be, for example, some commonly used asphalt damping plates and rubber damping plates, and through the arrangement of the damping plates, the energy of noise transmitted to the inner side cover body 32 can be effectively absorbed, so as to reduce the vibration of the inner side cover body 32.

Further, the inboard of damping sound absorbing layer 5 is equipped with the cotton layer of amortization 6, from this, adopts the cotton layer of amortization 6 with damping sound absorbing layer 5 forms the compound structure of making an uproar that falls, can eliminate the noise of different frequency sections, of course the cotton layer of amortization 6 also can set up in a flexible way and be close to one side of motor 2.

Furthermore, the noise reduction structure further comprises a micro-perforated part 7, the micro-perforated part 7 is disposed on the side of the noise reduction cotton layer 6 far away from the damping sound absorption layer 5, and an air layer 71 is disposed between the micro-perforated part 7 and the noise reduction cotton layer 6, in this technical scheme, the micro-perforated part 7 and the air layer 71 jointly form the small-hole resonance noise reduction structure, the micro-perforated part 7 at this time will resonate under excitation of noise of a certain frequency, and then the noise reduction effect is realized, that is, the micro-perforated part 7 reduces the peak value of the motor in a certain frequency band, so as to reduce the sound pressure level contribution degree of the octave, and the diameter of the micro-holes in the micro-perforated part 7 and the thickness of the air layer 71 are reasonably selected according to the frequency of the noise to be absorbed. It will be appreciated that the aforementioned microperforation means 7 may be, for example, microperforation plates that are preferably matched in a particular shape to the vacuum insulation 3.

The vacuum sound-proof housing 3 is further provided with an embedded part 36 extending towards one side of the motor installation carrier 1, the motor installation carrier 1 is provided with an embedded groove matched with the embedded part 36, further, the noise reduction structure further comprises a sealing ring 4, the sealing ring 4 is arranged in the embedded groove and is positioned between the bottom wall of the embedded groove and the embedded part 36, so that the sealing environment in the vacuum sound-proof housing 3 is ensured, the leakage of noise energy is effectively avoided, meanwhile, the flexible and soft connection between the vacuum sound-proof housing 3 and the motor installation carrier 1 is realized, and abnormal sound caused by hard collision between the vacuum sound-proof housing 3 and the motor installation carrier 1 is prevented. An attachment portion 37 is provided on the outer peripheral side of the vacuum soundproof cover 3, and the attachment portion 37 may be, for example, an attachment piece provided on the outer peripheral side of the outer cover body 31 at regular intervals, and the vacuum soundproof cover 3 is bolted to the motor mounting carrier 1 by the attachment piece; the attachment portion 37 may be a male screw or a snap member formed on the outer peripheral side of the outer cover 31. At this time, the outside of the micro-perforated part 7 is also provided with a corresponding mounting flange plate in an adaptive manner, and the mounting flange plate is attached to the mounting portion 37, so that the vacuum sound-proof housing 3 is fixed and the micro-perforated part 7 is fixed together.

Because the above-mentioned structure is limited in sealing, heat generated by the operation of the motor will be accumulated, which is obviously disadvantageous to the safe operation of the motor, therefore, it is preferable that the noise reduction structure further includes a cooling part having a cooling pipe 81, the cooling pipe 81 is disposed on the end surface and in the space covered by the vacuum soundproof cover 3, and further, the cooling pipe 81 is disposed around the outside of the motor 2; cooling water flows through the cooling pipe 81, and the cooling water may be provided by an external water source, for example, an inlet of the cooling pipe 81 is connected to an external water tap; a water storage tank 82 for the cooling pipe 81 may be separately provided, cooling water circulation is formed between the water storage tank 82 and the cooling pipe 81, and at this time, a corresponding water pump 83 should be further provided on a water inlet pipeline of the cooling pipe 81 to ensure the circulation process of the cooling water.

According to the utility model discloses an embodiment still provides a washing machine, including foretell structure of making an uproar that falls, just motor installation carrier 1 is a washing machine back section of thick bamboo.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a structure of making an uproar falls, its characterized in that, includes motor installation carrier (1), be provided with motor (2) on the terminal surface of motor installation carrier (1), still include vacuum sound-proof housing (3), vacuum sound-proof housing (3) cover is located the outside of motor (2), just vacuum sound-proof housing (3) with can dismantle the connection between motor installation carrier (1).

2. Noise reducing structure according to claim 1, characterized in that the vacuum insulation cover (3) has an outer cover (31) on the side remote from the electric machine (2) and an inner cover (32) on the side close to the electric machine (2), the outer cover (31) and the inner cover (32) being connected at their opposite side edges to form a closed cavity (33), and a vacuum is applied in the closed cavity (33).

3. Noise reducing structure according to claim 2, characterized in that the vacuum acoustic enclosure (3) is further provided with air extraction means (34).

4. Noise reducing structure according to claim 2, characterized in that a plurality of acoustic bridges (35) are further provided in the closed cavity (33), said acoustic bridges (35) being supported and connected between the outer shell (31) and the inner shell (32).

5. Noise reducing structure according to claim 2, characterized in that the vacuum acoustic enclosure (3) has a motor receiving cavity (38).

6. Noise reducing structure according to claim 5, characterized in that the inner side wall of the motor receiving cavity (38) is provided with a sound damping layer (5).

7. Noise reducing structure according to claim 6, characterized in that the damping sound-absorbing layer (5) comprises damping fins.

8. Noise reduction structure according to claim 7, characterized in that the damping fins are configured with a plurality of lightening holes.

9. Noise reducing structure according to claim 6, characterized in that the damping sound-absorbing layer (5) is provided on its inside with a layer of sound-damping cotton (6).

10. A noise reducing structure according to claim 9, further comprising a micro-perforated part (7), the micro-perforated part (7) being provided on the side of the sound attenuating cotton layer (6) remote from the damping and sound absorbing layer (5), and an air layer (71) being present between the micro-perforated part (7) and the sound attenuating cotton layer (6).

11. Noise reduction structure according to claim 1, characterized in that the vacuum insulation cover (3) further has a fitting portion (36) extending toward the motor mounting carrier (1) side, and the motor mounting carrier (1) is configured with a fitting groove matching with the fitting portion (36).

12. Noise reduction structure according to claim 11, further comprising a sealing ring (4), said sealing ring (4) being mounted in said groove between the groove bottom wall and said insert (36).

13. Noise reduction structure according to claim 1, characterized in that the outer peripheral side of the vacuum sound insulating cover (3) is provided with a mounting portion (37).

14. Noise reduction structure according to claim 1, characterized by further comprising a cooling member having cooling pipes (81), said cooling pipes (81) being on said end face and being in the space covered by said vacuum acoustic enclosure (3).

15. Noise reducing structure according to claim 14, characterized in that the cooling pipe (81) is arranged around the outside of the electrical machine (2); and/or the cooling component further comprises a water storage tank (82), and a cooling water circulation is formed between the water storage tank (82) and the cooling pipe (81).

16. A washing machine comprising a noise reducing structure, characterized in that the noise reducing structure is as claimed in any one of claims 1 to 15, and the motor mounting carrier (1) is a washing machine rear drum.