KR0148942B1 - Structure of muffler chamber system in vacuum cleaner - Google Patents

Abstract

The present invention relates to a sound absorbing room that surrounds the outside of the motor (motror) mounted inside the main body of the vacuum cleaner, and absorbs the motor noise, and more particularly, is introduced from the dust collecting chamber and externally exhausted to the exhaust port through the inlet of the sound absorbing room. A flaw prevention structure having a long flow path that can extend the exhaust flow path of the exhaust air to improve the sound absorption effect.

The present invention is a main sound absorbing room with a built-in motor, the sound absorbing material on the inner wall surface; And a left and a right side of the main sound absorbing chamber continuously formed to discharge the exhaust air to the left and the right by having a plurality of openings, and a left and right auxiliary sound absorbing chamber having sound absorbing material on the inner wall surface. Provided is a sound absorption prevention structure having a long flow path.

The present invention extends the exhaust flow path of the exhaust air from the side of the motor, and also expands the air contact area of the sound absorbing room with the sound absorbing material in contact with the exhaust air, thereby improving sound insulation and sound absorption effect, and reducing the speed of the exhaust air. The sound quality of the exhaust air can be purified to produce a low sound effect, and the composition of the components is simple, making it easy to manufacture and install, thereby reducing the manufacturing cost.

Description

Sound absorption structure with long flow path

1 is a cross-sectional view of a vacuum cleaner according to a conventional technical configuration.

2 is a cross-sectional view of a sound absorbing room according to the prior art.

3 is a side view of a sound absorbing room according to the present invention.

4 is a cross-sectional view along the line AA ′ in FIG. 3.

5 is a cross-sectional view taken along the line B-B 'in FIG.

* Explanation of symbols for main parts of the drawings

140: motor 150: sound absorption room

141: guide member 141a: sound absorbing material

201: upper sound absorbing room 202: lower sound absorbing room

210: main sound absorbing room 210a: recess

220: left auxiliary sound-absorbing room 221, 231: exhaust vent

222,232 Sound absorption wall 230 Right auxiliary sound absorption room

The present invention relates to a sound absorbing room that surrounds an outside of a motor mounted inside the main body of a vacuum cleaner, and absorbs motor noise. It relates to a sound absorbing structure having a long flow path that can extend the exhaust passage of the air to improve the sound absorbing effect.

Dust collecting chamber 132 formed inside the main body 110 of a general vacuum cleaner, as shown in FIG. 1, dust for filtering and storing dust contained in the air sucked through the suction pipe 121, which is an air suction passage. An envelope 138 is provided, an exhaust port 143 is formed in the sound absorbing chamber 150, a sound absorbing room 142 is accommodated, and the dust collecting chamber 132 and the sound absorbing chamber 150 are separated. The separation wall 144 is provided with an air inlet 145 having a plurality of air inlets (not shown) formed therein to allow air to flow between the dust collecting chamber 132 and the sound absorbing room 120.

In the sound absorbing chamber 120 mounted in the sound absorbing chamber 150 of the vacuum cleaner, as shown in FIG. 2, the front fastening flange 61 in which the front casing 60 and the rear casing 70 are continuously formed on the outer circumferential surface thereof. ) And rear flange 71 are screwed together to form an integrated sound absorbing chamber 120, and has a cylindrical outer structure identical to that of the motor 140 embedded in the inner space, and the protrusion of the motor 140. A rear dustproof material 146 made of a wrapping rubber material is mounted in the inner hole of the opening 122 formed in the rear end surface of the rear casing 70, and the exhaust flow path S is discharged when the exhaust air discharged from the motor 140 is discharged. E) is elongated and guide member 141 for absorbing noise is provided with a sound absorbing material (141a) on the inner surface is connected to the rear side of the motor 140 is mounted.

However, the problems caused by the above-described prior art configuration are as follows.

That is, the noise and exhaust air noise of the motor 140 is so large that while cleaning using a vacuum cleaner, the interior of the home or office is exposed to severe noise pollution, so in the art to reduce the noise of such a vacuum cleaner We are developing various noise prevention technologies.

Since the vacuum cleaner having the sound absorbing room 120 structure as shown in FIG. 2 has a short exhaust flow path S of the exhaust air exhausted from the side of the motor 140, and a small contact area with the sound absorbing material 141a, The sound absorbing effect using the sound absorbing material 141a of the guide member 141 and the sound absorbing material 141a mounted on the inner surface of the sound absorbing room 120 may not be sufficiently exhibited, resulting in low noise and sound insulating effects.

Accordingly, the present invention has been made to solve the above problems, the object of which is to lengthen the exhaust flow path of the exhaust air from the side of the motor, and also to increase the air contact area of the sound absorbing room having a sound absorbing material to which the exhaust air is in contact. By improving the sound insulation and sound absorption effect by reducing the speed of exhaust air, the sound effect of exhaust air sound can be purified and low sound effect can be achieved. In providing a sound absorbing structure having a.

The present invention to achieve the above object,

In the vacuum cleaner equipped with the dust-collecting chamber which has the dust bag which filters dust and a foreign substance inside, and the sound absorption room which contains the motor which generate | occur | produces a suction force,

A main sound absorbing room with a built-in motor and having a sound absorbing material on an inner wall thereof; and,

A long flow path comprising: a left and right auxiliary sound absorbing rooms which are continuously formed at the left and right sides of the main sound absorbing room and provided with a plurality of openings to exhaust the exhaust air to the left and right sides and have sound absorbing materials on the inner wall surface. By providing a sound absorbing structure having a.

Hereinafter, the configuration and operation of the sound absorbing room having a long flow path according to the present invention according to the accompanying drawings in detail as follows.

That is, the sound absorbing room 200 having a long flow path according to the present invention is mounted in the inner space of the driving chamber of the vacuum cleaner, and as shown in FIGS. 3 and 4, the outside of the motor 140 generating a strong suction force. The sound absorbing room of the present invention has a structure which is divided into upper and lower sound absorbing rooms 201 and lower sound absorbing rooms 202 by absorbing the noise of exhaust air from one side of the motor 140. 200 is integrally formed as a summation is composed of the main sound absorbing room 210, and the left, right auxiliary sound absorbing room (220), 230.

In the Humbang 200 having a structure in which the upper and lower sound absorbing rooms 201 and 202 are integrally integrated, the main sound absorbing room 210 has the same circular shape as that of the motor 140 mounted in the inner space. It has a structure, and has a flaw material 140a at the inner surface, and has a circular mounting hole into which the rear dustproof material 146 can be inserted at the center of the rear portion. In addition, the upper and lower protrusions 211a and 211b are formed on the outer surfaces of both sides of the main intake room 210 and are vertically formed and separated, and the plurality of the upper and lower protrusions 211a, 211b has an insertion groove 212a having a female thread formed therein, and the insertion groove 212a is connected to the fastening screw 212 through the main sound absorbing room 210, the left and right sound absorbing room 220, The sound absorbing room 200 constituting the 230 may be divided into upper and lower sound absorbing rooms 201 and 202.

Continuously formed at both left and right sides of the main sound absorbing room 210, and formed as a boundary between the openings 212 formed by the upper and lower concave portions 210a of both outer surfaces of the main sound absorbing room 210. The left and right subsidiary sound absorbing rooms 220 and 230 are provided with sound absorbing material 140a on an inner surface thereof, and a plurality of side vents are provided on one side of the left and right subsidiary absorbing room auxiliary sound absorbing rooms 220 and 230. 221 and 231, respectively, and have a plurality of sound absorbing walls 222, 232 formed vertically downward on an upper inner surface thereof, and the main sound absorbing walls 222, 232, respectively. 210 and the same sound absorbing material 140a as the sound absorbing material 140a attached to the inner surfaces of the left and right auxiliary sound absorbing rooms 220 and 230.

5 illustrates a cross-sectional structure in which a sound absorbing room 200 having a long flow path according to the present invention is equipped with a motor 140.

The upper and lower protrusions 211a and 211b formed on both sides of the main sound absorbing room 210 are assembled by the fastening screws 212 and divided into upper and lower sound absorbing rooms 201 and 202. Each of the upper and lower sound absorbing rooms 201 and 202 may be separated into an integrated sound absorbing room 200 in which the main sound absorbing room 210, the left and right auxiliary sound absorbing room 210, It is divided into 220, and the motor 140 is mounted in the inner space of the main sound absorbing room (210).

Exhaust air from one side of the motor 140, which generates a strong suction force, forms an exhaust passage S to the left and right, and contacts the sound absorbing material 140 a provided on the inner wall of the main sound absorbing room 210. The exhaust air is absorbed by a car, and then the exhaust air is attached to both sides while passing through the opening 212 formed between the main sound absorbing room 210 and the left and right auxiliary sound absorbing rooms 220 and 230, respectively. Secondary air absorbed by the sound absorbing material.

Subsequently, the flaw material 140a of the sound absorbing walls 222 and 232 having a predetermined length vertically formed on the upper inner walls of the left and right auxiliary sound absorbing rooms 220 and 230 through the opening 212. The exhaust air is reduced in speed as it comes into contact with the exhaust air, changing the properties of the exhaust sound into a soft sound of low frequency, absorbing the exhaust noise in the third order, and at the same time, a blocking effect is generated to block outside noise to the exhaust process. Exhaust air, which removes noise and forms the exhaust passage S as described above, has a plurality of exhaust ports 221 and 231 formed on one side of the left and right auxiliary sound absorbing rooms 220 and 230. It is exhausted to the outside through.

As described above, the sound absorbing room 200 having the long exhaust passage according to the present invention includes upper and lower sound absorbing materials 140a having the exhaust air discharged from the side surface of the motor 140 attached to the inner surface of the main sound absorbing room 210. The sound absorbing material 140a provided on both sides while passing through the opening 212 generated by the recess 210a of the main sound absorbing room 210 after the sound absorbing of the exhaust air sound is made in surface contact in the left and right directions. The noise of the motor is absorbed by the sound absorber, and the flow velocity of the exhaust air is lowered by the sound absorbing walls 222 and 232 formed on the upper inner surfaces of the left and right auxiliary sound absorbing chambers 220 and 230, respectively. Sound absorbing is made to 140a to double the noise reduction effect.

In addition, the vertical sound absorbing walls 222 and 232 lengthen the exhaust flow path S of the exhaust air, and achieve sound absorbing effects on the exhaust air sound as well as sound absorbing effect by the sound absorbing material 140a. Operation of the vacuum cleaner can be achieved, and the sound absorbing room 200 having a long flow path according to the present invention has a need for a guide member 141 mounted to lengthen the exhaust flow path S in the conventional sound absorbing room 120. This makes the construction simpler and easier to assemble.

Therefore, according to the sound absorbing room structure having a long flow path according to the present invention as described above, it is possible to improve the sound absorbing effect by the built-in sound absorbing material by making the flow path of the exhaust air significantly longer than before, and the exhaust air hits the sound absorbing wall By lowering the air flow rate, it is possible to change the noise of the exhaust sound to low sound, and at the same time, the sound insulation effect is generated, and the sound absorption of the exhaust air is excellent, there is no need for parts such as guide members, and the practical effect of lowering the manufacturing cost and improving price competitiveness is generated. .

Claims (4)

In the vacuum cleaner having a dust collecting chamber 132 having a dust bag 138 for filtering dust and foreign matter therein, and a sound absorbing room 200 having a motor 140 for generating suction suction, the motor 140 A main sound absorbing room 210 having a sound absorbing material 140a on an inner wall surface thereof, and a plurality of openings 212 formed on the left and right sides of the main sound absorbing room 210 and having a plurality of openings 212. By discharging to the left and right side, the left and right auxiliary sound-absorbing room 220, 230 having a sound absorbing material 140a on the inner wall surface; by providing a sound-absorbing room structure having a long flow path characterized in that it comprises a. According to claim 1, wherein the main sound absorbing room 210 and the left, right auxiliary sound absorbing room (220), 230 has an insertion groove (212a) formed with a female thread on the outer surface of the upper sound absorbing room 201 is divided Sound absorbing structure having a long flow path, characterized in that divided into the upper sound-absorbing room (201) and the lower sound-absorbing room (202) by a plurality of protrusions (211a) (211b). The sound absorbing device of claim 1, wherein the upper and inner surfaces of the left and right auxiliary sound absorbing rooms 220 and 230 respectively form sound absorbing walls 222 and 232 vertically downward. Room structure. The method of claim 1, wherein each of the left and right auxiliary sound-absorbing rooms 220 and 239 has a plurality of exhaust ports 221 and 231 for finally exhausting the exhaust air to the outside. Sound absorption structure having a long flow path characterized by.