CN1981690A - Vacuum cleaner having noise reducing system of motor - Google Patents

Abstract

In the main body of the vacuum cleaner, there is a motor housing covering the motor; a detachable filter is connected to one side of the motor housing, and the air from the motor housing is filtered in the main body of the vacuum cleaner. The air passes through the filter before being discharged.

Description

Vacuum cleaner with motor noise reduction system

technical field

The present invention relates to a vacuum cleaner and, more particularly, to a vacuum cleaner incorporating a noise reduction system designed to reduce noise generated by exhaust gas emissions during operation of the motor.

Background technique

Generally speaking, in a vacuum cleaner, when exhaust gas is discharged from a motor, exhaust noise is generated inside the housing. To solve this problem, exhaust gas is conventionally discharged from the vacuum cleaner through a motor noise reduction system using the following process.

As shown in FIG. 1, the exhaust gas enters the first exhaust passage 3 from the rear of the motor 2 through the opening 2a. Then, after passing through the second exhaust passage 4 formed between the outer surface of the inner casing 6 of the motor 2 and the inner surface of the outer casing of the motor 1, the exhaust gas passes through a vacuum cleaner main body (not shown) The inside, facing the exhaust filter 5 on the upper surface of the outer housing, is exhausted from the vacuum cleaner.

When the exhaust gas passes through the first exhaust passage 3 and the second exhaust passage 4 continuously in this way along a long or curved path range, it is possible to increase the length of the passage through which the exhaust gas must pass and change the length of the passage. route to reduce the noise generated by motor 2.

However, in the conventional art, the exhaust gas passes quickly through the exhaust passages 3 and 4, and when the exhaust gas changes direction along the route of the exhaust passage, it collides with the inner casing 6 and the outer casing 1, causing vibrations to occur, This vibration is then transferred to the main body of the vacuum cleaner (not shown) and radiated into the environment.

In traditional systems, as mentioned above, long or short passages are required so that unfiltered exhaust air passes from the exhaust outlet of the outer casing to the exhaust filter of the vacuum cleaner body, which is due to the exhaust from the motor The unfiltered dust discharged from the outer shell of the vacuum cleaner cannot be discharged inside the vacuum cleaner to avoid contamination caused by dust or other substances. Exhaust passages are necessary, but as described above, the exhaust passages cause vibrations to occur, and it is difficult to solve the problem of noise generated by these vibrations.

Contents of the invention

The object of the present invention is to provide a vacuum cleaner including an optional motor noise reduction system capable of eliminating vibrations generated in the exhaust chamber and the noise caused by the vibrations .

In order to achieve the above object, the present invention provides a vacuum cleaner, which includes: a housing covering the motor, the housing is arranged inside the cover; a detachable filter member, the filter member is connected to A side of the motor housing; and a motor noise reduction system wherein exhaust air from the motor housing is released inside the vacuum cleaner through a filter member in the exhaust chamber.

According to the present invention, by omitting the long and curved exhaust cavity along the side of the motor housing, the vibration caused by the exhaust gas passing through the exhaust cavity and the noise generated by the vibration can be significantly reduced.

By arranging the filter member with a space between its lower surface and the inside surface of the housing, it is possible to discharge filtered exhaust air inside the vacuum cleaner.

The motor housing may include: a mounting portion that accommodates the filter member at one side; a plurality of first exhaust openings on an upper surface of the mounting portion; and preferably also includes a plurality of A second exhaust opening to exhaust air that has passed through the filter member.

The motor housing further includes at least one spacer inserted between a lower surface of the filter member and an inner side surface of the housing of the vacuum cleaner adjacent to the filter member. , to keep a space between the two surfaces, and, in this case, either vibration-absorbing or sound-absorbing components can be used.

The vacuum cleaner may further include a door connected to a side of the motor housing facing the lower surface of the filter member using a sliding mechanism, and the door may be accessed from a lower surface of the filter member. The mounting point opens outwards.

Description of drawings

Figure 1 is a sketch showing a motor noise reduction system in a conventional vacuum cleaner;

2 is a sectional view showing a motor noise reduction system in an embodiment of the present invention;

Fig. 3 is an enlarged sectional view showing a mounting portion of the filter shown in Fig. 2;

Figure 4 is a side view showing a different embodiment of the filter of Figure 2;

Figure 5 is a plan view showing the sliding door opening outward from the main body of the vacuum cleaner in Figure 2;

6 is a sectional view showing a suction path of air in a vacuum cleaner including a motor noise reduction system using an embodiment of the present invention;

Figures 7a and 7b are cross-sectional views showing different embodiments of doors supporting filter members; and

Figure 8 is a graph comparing noise emissions from a vacuum cleaner with a conventional motor noise reduction system to a vacuum cleaner with an embodiment of the present invention.

Detailed ways

Hereinafter, the composition of a vacuum cleaner including a motor noise reduction system using an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

First, as shown in FIG. 2 , there is a suction part 11 in the main body 10 of the vacuum cleaner, and the suction part 11 sucks the incoming dust into the dust collection chamber 13 through a suction nozzle and a pipe (not shown). Considering the dust collecting ability, the dust collecting chamber 13 can adopt the cyclone air flow, and the air containing dust enters through the suction part 11 at the lower end of the chamber.

There is also a connecting passage 15 in the cover, after the air has passed through a filter member (not shown) and dust has been filtered from the air and collected in the dust collection chamber 13, the connecting passage 15 will pass the filtered air from The dust collecting chamber 13 is transported to the motor part 17 .

The motor part 17 includes a motor 21 for providing suction, an inner casing 19 covering the motor, and an outer casing 20 covering the inner casing and accommodating a motor base 23 .

Referring to FIG. 3, the inner case 19 is formed in two layers, and thus, the inner case 19 may have a plurality of first and second exhaust openings 19a, 19b capable of reducing noise on side and lower surfaces. In this case, the inner case 19 is not limited to the above-mentioned form, and even the inner case 19 may be omitted and only the outer case 20 may be used.

The outer case 20 includes a plurality of first exhaust openings 20 a for exhausting air that has passed through the second exhaust openings 19 b of the inner case 19 to the outside of the outer case 20 . The first exhaust opening 20a may be freely arranged on the lower surface of the outer casing 20 except for the area where the motor base 23 is located.

Also, giving an example of one aspect of the outer case 20, as shown in FIG. 3, the mounting portion 25 inserted into the filter member 30 extends toward the outer edge of the lower surface. In this case, in order to have a space between the filter member 30 and the first exhaust opening 20a so that the air can smoothly pass through the first exhaust opening 20a and be discharged toward the filter member 30, the mounting portion may be The inner periphery of 25 forms a cavity 26, wherein the cavity 26 has a step 26a of predetermined height. The height of the step 26a is preferably determined by considering both the exhaust capability and the filter capability.

In addition, in order to allow air that has passed through the filter member 30 to also be exhausted from the side of the filter member 30, the mounting portion 25 may further include a plurality of second exhaust openings 25a.

The filter member 30 is supported by an outwardly openable sliding door on one side of the vacuum cleaner housing. A predetermined space is formed between the seat 52 of the sliding door 50 and the filter member 30, and, in order to allow air that has passed through the filter member 30 to be discharged in the main body 10 of the vacuum cleaner, it is preferable that a plurality of spacers 40 Attached to the surface of the filter member 30.

In this case, the spacer 40 in FIG. 3 may maintain a space S having a predetermined height between the lower surface 33 of the filter member 30 and its seat 52 on the sliding door 50 . The volume of the space S can be easily determined by setting the heights of the spacers 40 , respectively, in consideration of the filtering capability and exhaust capability of the spacers 40 . Vibration-absorbing or sound-absorbing members having a predetermined consistency may be used as long as they are made of a material whose consistency is suitable for holding a predetermined space.

Moreover, in order to ensure that the space S remains, the spacer 40 may be independently attached to the lower surface 33 of the filter member 30, or, as shown in FIG. on the surface part.

As shown in FIG. 5 , a sliding door 50 is slidably connected to the housing 10 of the vacuum cleaner and is slidable open outwardly from the mounting point 25 so that the filter member 30 can be replaced. In this case, referring to FIG. 3 , the sliding door 50 includes sliding grooves 51 on both sides, which are respectively inserted into guide platforms on the housing 10 .

In the embodiment described here, a sliding door is shown, but there is no limitation on the type of door that can be used, therefore, a door 50 connected to the housing by hinges as shown in Figure 7a can also be used, or, The door 50 is attached to the enclosure 10 by screws 55 as shown in FIG. 7b. Likewise, the spacer 40 may be designed to sit directly on the inner surface of the housing 10 of the vacuum cleaner.

The operation and effectiveness of the vacuum cleaner provided with the motor noise reduction system using the embodiment of the present invention as described above can be explained as follows.

6 is a cross-sectional view showing the outline of a suction path of air entering into a vacuum cleaner including a motor noise reduction system embodying the present invention.

As shown in FIG. 6, if the motor 21 is rotated, the air near the suction nozzle (not shown) is sucked into the cyclone dust collection chamber 13 together with the dust to be removed. After the dust is removed by the centrifugal force of the cyclone dust collection chamber 13 and the air passes through a filter (not shown), the air enters the motor part 17 through the connecting channel 15 .

The air that has entered the motor portion 17 passes through the opening 21a in the motor 21, and, after successively passing through the first and second exhaust openings 19a, 19b in the inner housing 19, the air passes through the first exhaust opening 19a, 19b in the outer housing 20. The exhaust opening 19 a enters the filter 30 .

In this case, in this embodiment of the present invention, the long exhaust passage between the outer housing 20 and the filter member 30 used in the conventional technology is omitted, and has passed through the motor outer housing. The first exhaust opening 25a in the vacuum cleaner 20, and the filtered air passing through the filter member 30 can be directly discharged, thereby, the vibration generated in the exhaust passage of the conventional vacuum cleaner and the noise generated by the above vibration can be eliminated. .

Then, the air that has passed through the filter member 30 passes through the second exhaust opening 25a of the mounting portion 25 and the spacer 40, and in the main body 10 of the vacuum cleaner, the lower surface 33 of the filter member 30 and the filter member 30 are sliding. The space between the seat on the door is discharged. In the present embodiment, the air discharged through the filter member 30 moves in the direction of the dust collection chamber 13, however, this applies to all cases where the air is discharged within the housing and not directly from the vacuum cleaner.

Air exhausted within the main body 10 of the vacuum cleaner in this manner may be released to the outside of the vacuum cleaner through a grill, vent or other means forming part of the main body 10 of the vacuum cleaner.

In this embodiment of the present invention, the filter member 30 constitutes a structure that is not connected to the main body 10 of the vacuum cleaner, therefore, the restriction on the position of the grill or the exhaust filter in the conventional vacuum cleaner can be removed, that is, A grill or an exhaust filter is required to be installed on the upper portion of the main body 10 of the vacuum cleaner due to the placement position of the filter, and further, restrictions added to the design of the main body 10 of the vacuum cleaner can also be solved.

In this embodiment of the invention, the motor axis is arranged perpendicular to the main body 10 of the vacuum cleaner, and the above description assumes that the motor is mounted in this way. Comparing this arrangement with an arrangement in which the motor is mounted horizontally relative to the enclosure, as shown in Figure 8, the user may notice a reduction of approximately 5 dBA at the peak motor rotational frequency (5 dBA at the constituent motor rotational frequency base contrast, perceivable to the user). The difference in noise levels is caused more by motors rotating along vertical rather than horizontal axes than by vibrations generated within a vertical motor arrangement.

With the present invention, the long cavity between the outer casing of the motor and the filter member in conventional vacuum cleaners is eliminated, and the air that has passed through the filter from the exhaust hole on the outer casing of the motor can be directly in the vacuum cleaner. In-body exhaust, therefore, eliminates the vibration and resulting noise that would otherwise occur in conventional vacuum cleaners through the limited exhaust chamber.

In addition, since the filter member is installed on the lower outer side of the outer casing of the main frame when the main frame is designed, the casing of the vacuum cleaner can be freely designed without restrictions on the position of the grill or the exhaust hole, so , the filter member is not attached to the main frame where it is mounted on the exhaust side, and the inside of the enclosure can be fixed in place.

Although the preferred embodiments of the present invention have been described to illustrate the theory, the present invention is not limited to the constructions and implementations explained and illustrated above. The above description is to enable those skilled in the art to easily understand the changes and improvements to the present invention without departing from the spirit and scope described in the appended claims. Accordingly, these changes and improvements must be considered along with those features that have not been modified from the conventional art.

Claims (11)

1. vacuum cleaner that has noise reducing system of motor comprises:

Electric machine casing, described electric machine casing are arranged in the main body of described vacuum cleaner, and described electric machine casing covers motor; And

Filter member, described filter member are detachably fixed to a side of described electric machine casing;

Wherein, from the air in the described electric machine casing in the main body of described vacuum cleaner, be discharged by described filter member.

2. the vacuum cleaner that has noise reducing system of motor as claimed in claim 1, wherein, described filter member is arranged to: leave the space between the inner surface of the main body of the surface of described filter member and described vacuum cleaner.

3. the vacuum cleaner that has noise reducing system of motor as claimed in claim 1, wherein, described electric machine casing further is included in the mounting portion that a side of described electric machine casing is held described filter member.

4. the vacuum cleaner that has noise reducing system of motor as claimed in claim 3, wherein, described mounting portion further comprises:

Be positioned at a plurality of first exhaust ports on the upper surface; And

Be positioned at another lip-deep a plurality of second exhaust ports, passed through the air of described filter member with discharging.

5. the vacuum cleaner that has noise reducing system of motor as claimed in claim 1, wherein, described filter member comprises one or more supporting projections, described one or more supporting projections are formed on the lower surface of described filter member.

6. the vacuum cleaner that has noise reducing system of motor as claimed in claim 1, wherein, further comprise one or more distance pieces, described distance piece insert the lower surface of described filter member and described vacuum cleaner main body, towards between the inner surface of described filter member lower surface.

7. the vacuum cleaner that has noise reducing system of motor as claimed in claim 6, wherein, described distance piece is weakening member or sound absorbing member.

8. the vacuum cleaner that has noise reducing system of motor as claimed in claim 1, wherein, further comprise door, described door be installed in described vacuum cleaner main body, on the part of described filter member lower surface, described Men Kecong opens outwardly towards the outside of described vacuum cleaner the mounting portion.

9. the vacuum cleaner that has noise reducing system of motor as claimed in claim 8, wherein, described door in the both sides of the cover body of described vacuum cleaner, utilize slide mechanism to be connected to the main body of described vacuum cleaner.

10. the vacuum cleaner that has noise reducing system of motor as claimed in claim 8, wherein, described door utilizes linkage to be connected to a side of the main body of described vacuum cleaner.

11. the vacuum cleaner that has noise reducing system of motor as claimed in claim 8, wherein, described door is connected to a side of the main body of described vacuum cleaner by screw.

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