WO2019218599A1

WO2019218599A1 - Device having liquid bag noise-reduction and vibration-damping structure, and vacuum cleaner having same

Info

Publication number: WO2019218599A1
Application number: PCT/CN2018/112131
Authority: WO
Inventors: 陈勇; 廖泓斌; 王德旭; 黄月林; 陈闪毅; 任敏; 孟得浩; 李吉
Original assignee: 格力电器（武汉）有限公司; 珠海格力电器股份有限公司
Priority date: 2018-05-14
Filing date: 2018-10-26
Publication date: 2019-11-21
Also published as: CN108402995A

Abstract

Provided is a device having a liquid bag noise-reduction and vibration-damping structure. The device comprises a vibrating body and a machine housing (3) arranged outside the vibrating body, and further comprises a liquid bag (1) containing a liquid (12), wherein the liquid bag (1) at least fills the entire space formed by a peripheral outer surface of the vibrating body and an inner surface of the machine housing (3), and the liquid bag (1) extrudes the vibrating body and the machine housing (3) at the same time. Further provided is a vacuum cleaner comprising the device having a liquid bag noise-reduction and vibration-damping structure, wherein the vibrating body is an electric motor (2) in the vacuum cleaner. The present disclosure has the advantages of excellent noise-reduction and vibration-damping effects, a good heat dissipation effect, a good sealing performance, and convenient assembly.

Description

Device with sac noise reduction and shock absorbing structure and vacuum cleaner therewith

Related application

The present disclosure is based on the Chinese patent application with the application number 201810457376.3 and the application date being May 14, 2018, and the invention name is "a device having a liquid capsule noise reduction and shock absorbing structure and a vacuum cleaner having the same" The disclosure of the Chinese patent application is incorporated herein by reference in its entirety.

Technical field

The present disclosure relates to the field of noise reduction and shock absorption technology, and in particular to a device having a liquid capsule noise reduction and shock absorption structure and a vacuum cleaner therewith.

Background technique

As people's living standards improve, their dependence on mechanical equipment increases. Hand-held vacuum cleaners have gradually entered the family and become an indispensable assistant in daily cleaning work.

However, there are several major industrial problems in handheld vacuum cleaners, which restricts the further development of handheld vacuum cleaners. The noise and vibration problems are two important factors that restrict the development of hand-held vacuum cleaners. Because the handheld vacuum cleaner motor is close to the hand and the sound source is close to the human ear, slight vibration may affect the user. The grip of the experience, the sharp noise will stimulate the human eardrum to seriously affect the user experience, long-term use is not conducive to good health.

Although the existing vacuum cleaner uses various flexible soft rubber sealing rings, cushions and soundproof cotton, the vibration of the body and the handle is still large, and the noise is also large, which causes troubles for the cleaning work. At the same time, the existing vacuum cleaner often suffers from air leakage due to poor sealing of the motor components, resulting in a decrease in the suction force at the front end of the vacuum cleaner, and the cleaning effect is poor.

Chinese Patent Publication No. CN205078438U discloses a shock-absorbing and noise-reducing airbag for use in a pump body, which is provided with a noise-reducing outer casing on the periphery of the pump body, and three air-bags spaced apart from each other are fixed on the inner side surface of the noise-reduction outer casing, and the airbag and the pump body are Soundproof cotton pads are arranged between each airbag, and each airbag needs to be filled and deflated by an inflating device such as an air pump through an elbow connected thereto. The shortcoming of the shock absorbing and noise-reducing airbag is that the airbag has poor damping and noise reduction effects, and an auxiliary soundproof cotton pad is needed to solve the noise problem, and the airbag has poor heat dissipation effect, and is not suitable for the motor with large heat dissipation. Occasionally; the airbag does not realize full-scale wrapping, and does not form a squeeze at the same time on the pump and the outer casing, which may cause a poor sealing effect at the same time, which may cause a poor sealing effect, and cannot be applied to a similar motor; After the airbag is inflated, the gas pressure will decrease with time, and the supplemental gas consumes energy; the airbag needs to be pumped and inflated by the external pumping pump according to the working state of the hot water circulation pump, and the structure is cumbersome.

Summary of the invention

Therefore, the present disclosure is to solve at least one of the following technical problems: the existing vacuum cleaner motor is loud and sharp, stimulating the human hearing system, and is not conducive to good health. The motor of the vacuum cleaner generates a large amount of heat, and the air cooling effect is not good. The damping structure of the vacuum cleaner motor usually has poor damping effect and the whole machine has large vibration. The vacuum cleaner motor assembly has a complicated sealing structure and is laborious to assemble. The vacuum cleaner motor assembly has poor sealing effect, poor cleaning effect, and is not conducive to energy saving.

The apparatus provided with the sac noise reduction absorbing structure includes a vibration body, a casing disposed outside the vibration body, and a liquid sac containing a liquid, the sac filling at least the vibration body circumference An entire space formed by the outward surface and the inner surface of the casing, and the liquid bladder simultaneously presses the vibrating body and the casing.

Further, the sac is a circular cylinder that covers a circumferential outer surface of the vibrating body.

Further, the sac includes a toroidal cylinder portion and an extension portion disposed at two ends of the annular cylinder portion, the annular cylinder portion communicating with the extension portion, wherein the annular cylinder portion Covering a circumferential outer surface of the vibrating body, the extending portion covering at least a portion of an end surface of the vibrating body.

Further, the extension portion has an annular shape and is formed by extending radially inward from an end portion of the annular cylinder portion.

Further, the capsule of the sac is made of an elastic material.

Further, the elastic material is rubber.

Further, the liquid is water or oil.

Further, after the liquid capsule is filled between the vibration body and the casing, the pressure of the liquid ranges from 20 kPa to 60 kPa.

Further, the vibration body is a motor or a pump.

Further, one end of the liquid capsule is provided with a convex liquid inlet.

Further, a valve is disposed on the liquid injection port.

The vacuum cleaner provided by the present disclosure includes any one of the above devices having a liquid capsule noise reduction absorbing structure, wherein the vibration body is a motor of a vacuum cleaner.

The technical solution of the present disclosure has at least one of the following advantages:

1. The device with the liquid-bag noise reduction and shock-absorbing structure provided by the present disclosure has excellent noise reduction effect, relies on liquid absorption in the liquid capsule, filters out noise, and can reduce the noise amount of the whole machine without additional noise insulation device, and improves The sound quality of the whole machine.

2. The device with the liquid-bag noise reduction and shock-absorbing structure provided by the present disclosure is especially suitable for a high-current high-speed motor such as a vacuum cleaner vacuum motor. This type of motor generates a large amount of heat, and heats the motor through the liquid in the liquid capsule. The cooling temperature improves the working performance of the motor and prolongs the service life of the motor and the vacuum cleaner.

3. The device with the sac noise reduction absorbing structure provided by the present disclosure, the sac of the motor envelops the entire outer peripheral surface of the motor, and closely fits with the motor and the outer casing, and squeezes the two to realize the motor and the casing The flexible assembly improves the resonance problem caused by the motor.

4. The device with the sac noise reduction absorbing structure provided by the present disclosure is flat in the state before assembly, and after being assembled with the motor, the liquid pump is used to inject the liquid, thereby assembling, fixing and sealing the motor. . Compared with traditional cushions or seals, this solution is extremely easy to assemble and does not force the motor.

5. The sac is well sealed, the internal pressure will hardly decrease with time, the noise reduction and shock absorption work is stable, and there is no need for an external device for replenishing body fluid, and only one time filling can be completed during assembly.

6. The vacuum cleaner provided by the present disclosure has at least one of the above advantages because the above-described device having a liquid-bag noise reduction and shock absorbing structure is employed.

DRAWINGS

In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solutions in the prior art, the drawings to be used in the specific embodiments or the description of the prior art will be briefly described below, and obviously, the attached in the following description The figures are some embodiments of the present disclosure, and other drawings may be obtained from those of ordinary skill in the art without departing from the drawings.

1 is a cross-sectional view of an apparatus having a sump noise reduction absorbing structure provided in a first embodiment of the present disclosure;

Figure 2 is an exploded view of the structure of the apparatus shown in Figure 1;

Figure 3 is a schematic view showing the cooperation of the liquid-bag noise reduction and shock absorbing structure and the vibration body of Figure 1;

4 is a cross-sectional view of an apparatus having a sump noise reduction absorbing structure provided in a second embodiment of the present disclosure.

Description of the reference signs:

1- sac, 11-liquid, 12-injection port, 13-valve, 14-ring cylinder, 15-extension,

2-motor, 21-intake end, 22-exhaust end, 3-chassis.

Detailed ways

The technical solutions of the present disclosure will be described clearly and completely in conjunction with the accompanying drawings. It is obvious that the described embodiments are a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without departing from the inventive scope are the scope of the disclosure.

In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. The orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of describing the present disclosure and the simplified description, and does not indicate or imply that the device or component referred to has a specific orientation, in a specific orientation. The construction and operation are therefore not to be construed as limiting the disclosure. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present disclosure, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components. The specific meanings of the above terms in the present disclosure can be understood in the specific circumstances by those skilled in the art.

Further, the technical features involved in the different embodiments of the present disclosure described below may be combined with each other as long as they do not constitute a conflict with each other.

Example 1

1 to 3 show a first embodiment of a device having a sump noise reduction absorbing structure. It should be understood that the device having the sump noise reduction absorbing structure in the present disclosure can also be used in the case of having other vibration bodies such as a pump body, but in the present embodiment, the vacuum cleaner for the motor 2 is used. The example is introduced. The motor 2 is the core component of the vacuum cleaner and is used to generate suction in the vacuum cleaner and is therefore a major source of vibration and noise. As shown in FIG. 1, the motor 2 has an intake end 21 at one end and an exhaust end 22 at the other end. The motor 2 is generally mounted in the casing 3. It can be seen from FIG. 1 and FIG. 2 that the outer circumference of the motor 2 is cylindrical, the casing 3 is covered on the outer circumference of the motor 2, and a circular ring exists between the circumferential outer surface of the motor 2 and the inner surface of the casing 3. The space of the body.

The apparatus having the liquid-bag noise reduction absorbing structure in the present embodiment includes the above-described motor 2, the casing 3, and the sac 1 containing the liquid 11. The liquid 11 is filled in a chamber formed by the capsule of the sac 1. The sac 1 is disposed in the above-described annular cylindrical space between the motor 2 and the casing 3, and the entire space is filled with the liquid bag 1. That is, as shown in FIG. 3, the sac 1 completely covers at least the entire outer surface of the motor 2, and as shown in FIG. 1, the inner surface of the sac 1 after assembly is closely attached to the motor 2. On the outer surface of the circumference, the outer surface of the sac 1 abuts against the inner surface of the casing 3. Since the liquid bag 1 is filled with the liquid 11, the liquid 11 forms a certain liquid pressure, and under the action of the liquid pressure, the liquid bag 1 can simultaneously press the outer surface of the motor 2 and the inner surface of the casing 3.

The device with the liquid-bag noise reduction and shock absorbing structure of the present disclosure utilizes the liquid 11 in the liquid bag 1 to absorb and filter the noise generated by the motor 2 in a large amount, greatly reducing the sound emitted by the entire vacuum cleaner, and improving the sound quality of the vacuum cleaner. Further, by means of the liquid bag 1, a flexible assembly is realized between the motor 2 and the casing 3, thereby improving the problem of the overall vibration caused by the vibration of the motor 2, and reducing the source of noise generation from the root. Further, in the case of a vacuum cleaner, for example, the motor 2 is generally in a state of high speed operation, and it is easy to generate a large amount of heat in a short time. Since the liquid 11 in the sac 1 has better heat transfer performance than air, and since the sac 1 is in close contact with the motor 2 and the casing 3, the heat resistance around the motor 2 is small, and the heat radiated can be more quickly It is conducted to the outside, thereby effectively cooling the motor 2, improving the performance of the motor 2.

It is to be understood that the sac 1 is not filled with the liquid 11 before assembly, and thus is in a flat state. When the liquid 11 is filled, the sac 1 is propped up to form a circular cylinder which matches the above space between the motor 2 and the casing 3, so that the sac 1 simultaneously presses the motor 2 and the case 3.

Further, in order to cause the sac 1 to be squeezed between the motor 2 and the casing 3 to facilitate a flexible connection therebetween, the capsule of the sac 1 is preferably made of a soft, high-strength elastic material, for example ,rubber. This can avoid the occurrence of resonance and improve the service life of the motor 2.

Further, the liquid 11 in the liquid bag 1 can be used as long as it is chemically stable and has good thermal conductivity. However, in the present embodiment, the liquid 11 is preferably water or oil in consideration of heat dissipation performance, sound insulation effect, availability, and cost.

1 and 3, in order to facilitate the filling of the liquid 11, the liquid bag 1 is provided with a liquid filling port 12 at the same end as the exhaust end 22 of the motor 2, and the liquid filling port 12 is outwardly from the end of the liquid bag 1. Protruding to facilitate connection to an external infusion device. The fill port 12 can be sealed by a sealing device, for example, the sealing device is preferably a valve 13. The sac 1 only needs to be filled once, and the internal pressure does not decrease with time, so there is no need for an external device for replenishing the liquid.

By filling the sac 1 of the liquid 11, a squeezing can be formed between the motor 2 and the casing 3, and this squeezing simultaneously clamps the motor 2. In order to form a good filling and pressing between the sac 1 and the motor 2 and the casing 3, the liquid pressure inside the sac 1 is preferably in the range of 20 kPa to 60 kPa, and when the liquid pressure reaches the numerical range, the sac 1 The optimum spring and damping conditions provide better damping for the motor 2, while sealing the motor components without the need for additional seals, reducing the number of parts required for the vacuum cleaner and reducing costs.

The installation process of the apparatus having the liquid capsule noise reduction and shock absorbing structure in the present embodiment will be described in detail below. In order to facilitate transportation and installation, the sac 1 is in a flat state in which no liquid is injected before installation. During the assembly process, the capsule of the sac 1 is first assembled between the motor 2 and the casing 3. After the assembly is completed, the chamber in the capsule 1 is filled with a liquid injection port 12 projecting from one end of the liquid bag 1 by means of an auxiliary liquid injection device. When the injected liquid 11 reaches a certain pressure, the valve inlet 12 is closed by the valve 13 when the preferred pressure range is as described above. The injection is completed once and no additional liquid is required.

Compared with the traditional rubber sealing ring, the installation method is extremely convenient, and the flexible assembly of the motor 2 is realized, and the motor 2 and the shock absorbing sealing ring are forcibly caught in the casing 3, which simplifies the assembly process and the difficulty, and saves Assembly labor costs. The auxiliary liquid filling device is used to inject the liquid bag 1, and then the liquid filling port 12 is closed to achieve the long-lasting pressure holding of the liquid bag 1, and the motor 2 is continuously soundproofed, shock-absorbing, sealed and fixed.

Example 2

FIG. 4 shows a second embodiment of the present disclosure, and the same portions as those of the first embodiment will not be described again. Differences between the present embodiment and the first embodiment will be described in detail below.

In the present embodiment, the liquid bladder 1 covers a part of both end portions of the motor 2 in addition to the entire circumferential direction of the motor 2 . As shown in FIG. 4, the sac 1 includes two portions, that is, a circular cylindrical portion 14 covering the circumferential outer surface of the motor 2, and an extending portion 15 provided at both ends of the circular cylindrical portion 14, and the extending portion 15 is provided. Covering at least a portion of the end face of the motor 2. The annular cylinder portion 14 is in communication with the extension portion 15. Preferably, the extension portion 15 is annular and is formed radially inwardly from the end of the annular cylinder portion 14, that is, the axial section of the sac 1 forms a "[]" type.

Compared with the first embodiment, the liquid bag 1 in the present embodiment further covers both ends of the motor 2, so that the sealing effect on the motor 2 is better, and the suction of the working tip position of the motor 2 is avoided. The decline ensures the long-term cleaning effect of the vacuum cleaner and also achieves the beneficial purpose of energy saving. In addition, the sac 1 increases the amount of the liquid 11 that absorbs noise due to the extension of both ends, thereby further improving the effect of noise reduction.

It is apparent that the above-described embodiments are merely illustrative of the examples, and are not intended to limit the embodiments. Other variations or modifications of the various forms may be made by those skilled in the art in light of the above description. There is no need and no way to exhaust all of the implementations. Obvious changes or variations resulting therefrom are still within the scope of the present disclosure.

Claims

A device having a sac noise reduction and shock absorbing structure, comprising:

Vibrating body

a casing (3) disposed outside the vibration body; and

a sac (1) containing a liquid (11) and filling at least an entire space formed by the peripheral surface of the vibrating body and the inner surface of the casing (3), and the sac (1) is opposite to the vibration The body and the casing (3) simultaneously produce extrusion.
The apparatus according to claim 1, wherein the liquid bladder (1) is a circular cylinder that covers a circumferential outer surface of the vibrating body.
The device with a sump noise reduction absorbing structure according to claim 1, wherein the sac (1) comprises a toroidal cylinder portion (14) and is disposed at the annular cylinder portion (14) An extension (15) at both ends, the annular cylinder portion (14) being in communication with the extension (15), wherein the annular cylinder portion (14) covers the periphery of the vibrating body The surface, the extension (15) covers at least a portion of an end surface of the vibrating body.
The device with a sump noise reduction absorbing structure according to claim 3, wherein said extension portion (15) is annular and radially from an end portion of said annular cylinder portion (14) Formed inwardly.
A device having a sump noise reduction absorbing structure according to any one of claims 1 to 4, characterized in that the capsule of the sac (1) is made of an elastic material.
The apparatus according to claim 5, wherein the elastic material is rubber.
A device having a sump noise reduction absorbing structure according to any one of claims 1 to 4, characterized in that the liquid (11) is water or oil.
Device with a sump noise reduction absorbing structure according to any one of claims 1 to 4, characterized in that the sac (1) is filled between the vibration body and the casing (3) Thereafter, the pressure of the liquid (11) ranges from 20 kPa to 60 kPa.
The device with a sump noise reduction absorbing structure according to any one of claims 1 to 4, characterized in that the vibration body is a motor (2) or a pump.
A device having a sump noise reduction absorbing structure according to any one of claims 1 to 4, characterized in that one end of the sac (1) is provided with a convex liquid inlet (12).
The device according to claim 10, characterized in that the liquid inlet (12) is provided with a valve (13).
A vacuum cleaner comprising the apparatus having a sump noise reduction absorbing structure according to any one of claims 1-11, wherein the vibration body is a motor (2) of a vacuum cleaner.