JP2013034564A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner reduced in noise during operation.SOLUTION: The vacuum cleaner includes: an exhaust port 34 for discharging exhaust air from an electric fan 2; a dust collecting part 4 communicated with a suction port 27 of the electric fan 2; a soundproof case 26 covering the whole electric fan 2 except for the suction port 27; an opening 30 arranged on the soundproof case 26; a closed space 31 arranged between a vacuum cleaner body 1 and the dust collecting part 4; and an exhaust passage 32 arranged between a lower part of the soundproof case 26 and the vacuum cleaner body 1, which is communicated with the exhaust port 34. The opening 30 of the soundproof case 26, the closed space 31 and the exhaust passage 32 are communicated with each other so that the exhaust air is discharged from the opening of the soundproof case 26, passed through the exhaust passage 32 through the closed space 31 and discharged from the exhaust port 34. Thus, the noise and air whistle of exhaust generated from the electric fan 2 resonate in the closed space 31 and a silencing effect similar to a Helmholtz resonator is obtained. Consequently, the noise and air whistle of exhaust can be attenuated.

Description

  The present invention relates to a vacuum cleaner that can reduce noise.

  Recent vacuum cleaners are equipped with an electric blower that generates suction air and a cyclone dust collector disposed upstream of the electric blower, and dust and air flow into the cyclone dust collector, and this air is a cyclone dust collector. It turns inside and is separated from dust. As a result, the dust remains in the cyclone dust collector, while the air comes out of the cyclone dust collector. Further, the cyclone dust collector is connected to an electric blower through an air passage, and dust and centrifuged air flow in the air passage toward the electric blower, and the air that has passed through the electric blower is an electric blower. From the filter installed on the front surface of the air passage, the air passage under the electric blower is passed and exits from a plurality of exhaust ports provided on the rear end face of the cleaner body (see, for example, Patent Document 1).

JP 2010-99183 A

  However, in the conventional configuration, air flows in the air passage from the cyclone dust collector toward the electric blower, but wind noise generated from the electric blower is transmitted to the outside of the cleaner body through the air passage and its inner wall. The problem was that noise was generated.

  This invention solves the said conventional subject, and it aims at providing the vacuum cleaner which reduced the noise at the time of driving | operation.

In order to solve the conventional problem, the vacuum cleaner of the present invention is:
A vacuum cleaner body containing an electric blower,
An exhaust port provided in the vacuum cleaner body for discharging exhaust air from the electric blower;
A dust collector disposed so as to communicate with the suction port of the electric blower;
A soundproof case covering the whole except the suction port of the electric blower;
An opening provided in the soundproof case;
A closed space provided between the vacuum cleaner body and the dust collecting part;
An exhaust passage provided between the lower part of the soundproof case and the cleaner body and communicating with the exhaust port;
The opening of the soundproof case communicates with the closed space, and the closed space communicates with the exhaust passage.
Exhaust air from the electric blower is discharged from the opening of the soundproof case, passes through the exhaust passage through the closed space, and is discharged from the exhaust port.

  As a result, noise generated from the electric blower and exhaust wind noise are exhausted from the opening provided in the soundproof case to the closed space portion on the exhaust wind. At that time, the air that has entered the closed space part resonates in the closed space part, so that the same silencing effect as that of the Helmholtz resonator can be obtained, and the noise and wind noise of the exhaust can be attenuated.

  The electric vacuum cleaner of the present invention can reduce noise generated from an electric blower during operation and wind noise of exhaust.

Whole perspective view of the electric vacuum cleaner in Embodiment 1 of this invention Same vertical cross section of the vacuum cleaner body The whole perspective view of the state which removed the dust collection part and upper case of the same vacuum cleaner The whole perspective view of the state which removed the dust collection part of the same vacuum cleaner and installed the upper case Central cross-sectional view showing the lower half of the vacuum cleaner body with the upper case removed Same as above, longitudinal sectional view of the entire vacuum cleaner body at the center of the electric blower of the vacuum cleaner body

The first invention is
A vacuum cleaner body containing an electric blower,
An exhaust port provided in the vacuum cleaner body for discharging exhaust air from the electric blower;
A dust collector disposed so as to communicate with the suction port of the electric blower;
A soundproof case covering the whole except the suction port of the electric blower;
An opening provided in the soundproof case;
A closed space provided between the vacuum cleaner body and the dust collecting part;
An exhaust passage provided between the lower part of the soundproof case and the cleaner body and communicating with the exhaust port;
The opening of the soundproof case communicates with the closed space, and the closed space communicates with the exhaust passage.
The exhaust air from the electric blower is discharged from the opening of the soundproof case, passes through the exhaust passage through the closed space, and is discharged from the exhaust port. The noise generated from the wind and the wind noise of the exhaust are exhausted from the opening provided in the soundproof case to the closed space by riding the exhaust wind. At that time, the air that has entered the closed space portion resonates in the closed space portion, so that the same silencing effect as that of the Helmholtz resonator can be obtained, and the noise and the wind noise of the exhaust can be attenuated.

  According to a second aspect of the present invention, in particular, in the electric vacuum cleaner of the first aspect, the opening provided in the soundproof case is opened toward the front direction of the cleaner body with reference to the front-back direction of the cleaner body. Further, the closed space portion communicating with the opening portion is disposed in a forward direction with respect to the opening portion, and the exhaust port is disposed behind the soundproof case so that the opening provided in the soundproof case is provided. Exhaust gas discharged from the part flows into the closed space part arranged in the forward direction of the vacuum cleaner main body, resonates in the closed space part, and obtains the same silencing effect as the Helmholtz resonator. And since it passes through the exhaust passage between the lower part of the soundproof case and the main body of the vacuum cleaner, and is discharged toward the exhaust port arranged behind the soundproof case, it reaches the exhaust port from the opening. Lengthen the exhaust passage to Since it coercive, it is possible to attenuate more effectively wind noise noise and exhaust gas generated from the electric blower.

According to a third aspect of the present invention, there is provided an electric vacuum cleaner provided with a cyclone dust collector in the dust collector of the first or second invention, and an inlet provided in a front portion of the cleaner body, and an inlet provided in the cyclone dust collector. And a pipe communicating the inlet and the inlet,
As the inlet of the cyclone dust collector is biased to the left or right, the pipe communicating with the inlet and the inlet is inclined to the left or right from the center of the cleaner body, and the pipe is connected to the opposite side of the pipe. By forming the closed space portion, it is possible to ensure the relatively large volume of the closed space portion on the side of the pipe, and the air that has entered the closed space portion resonates further in the closed space portion. Thus, the same silencing effect as the Helmholtz resonator can be obtained more effectively, and the noise from the electric blower and the wind noise of the exhaust can be attenuated.

  According to a fourth aspect of the present invention, in particular, in the electric vacuum cleaner according to any one of the first to third aspects, the closed space portion includes a lower case that forms a lower portion of the cleaner body and an upper portion of the cleaner body. The dust collecting part is configured by fitting with an upper case that houses the dust collecting part, and by attaching a seal packing to the fitting part of the fitting, air leakage in the closed space part is eliminated, and the closed space By forming the part to function as a soundproof room, noise due to air leakage at the fitting part is reduced without leaking the air that has entered the closed space part with seal packing, and more noise in the air. Can be resonated within the closed space, and noise from the electric blower and exhaust wind noise can be attenuated by the same silencing effect as the Helmholtz resonator.

  According to a fifth aspect of the present invention, in the vacuum cleaner of any one of the first to fourth aspects of the invention, by adhering a sound absorbing material such as urethane to the inside of the closed space portion, air in the closed space portion can be obtained. In addition to the same silencing effect as the Helmholtz resonator by resonance, the noise absorption effect by the sound absorbing material can further attenuate the noise from the electric blower and the wind noise of the exhaust.

  According to a sixth aspect of the present invention, in the vacuum cleaner of any one of the first to fifth aspects of the invention, a filter body is provided on the exhaust upstream side of the opening of the soundproof case, so that the soundproofing is performed by the filter body. The exhaust in the case has the effect of lowering the exhaust flow velocity at which the exhaust is rapidly exhausted to the closed space through the opening, and the wind noise of the exhaust when flowing into the closed space can be further attenuated. Become.

(Embodiment 1)
The vacuum cleaner in the 1st Embodiment of this invention is demonstrated using FIGS. FIG. 1 is an overall perspective view of a vacuum cleaner according to a first embodiment of the present invention, FIG. 2 is a central longitudinal sectional view of a vacuum cleaner body 1 of the vacuum cleaner, and FIG. 3 is a dust collecting unit of the vacuum cleaner. 4 is an overall perspective view of the vacuum cleaner with the upper case 15 removed, FIG. 4 is an overall perspective view of the vacuum cleaner with the dust collecting part 4 removed and the upper case 15 installed, and FIG. FIG. 6 is a longitudinal sectional view of the entire main body at the center of the electric blower 2 of the cleaner body 1.

  The vacuum cleaner main body 1 in the present embodiment includes an upper case 15 and a lower case 16 that form an outer shell, and a main body handle 17 used when carrying the vacuum cleaner main body 1 is attached to an upper portion of the cleaner main body 1. ing. The main body handle 17 is provided with a concave portion 21 that engages with a convex portion 20 of a handle portion 19 rotatably attached to the upper lid portion 18 of the dust collecting portion 4, and cleans the dust collecting portion 4. The machine body 1 is securely held and fixed.

  The vacuum cleaner body 1 is also provided with an electric blower chamber 3 having a built-in electric blower 2 for generating suction air at the rear and a power cord winding device 29, and is attached to and detached from the lower case 16 of the cleaner body 1 at the front. An upper case 15 that houses a dust collecting part 4 that freely separates and collects dust is disposed, and a pair of traveling wheels 6 are rotatably attached to both sides of the lower rear part. A traveling caster 7 is attached. At the front part of the cleaner body 1, there is provided an air inlet 10 to which a connection pipe 9 provided at one end of the hose 8 is detachably connected.

  The other end of the hose 8 is provided with a tip pipe 12 having a handle 11 that is gripped during cleaning. Reference numeral 13 denotes an extendable or jointable extension pipe, the downstream end of which is detachably connected to the tip pipe 12, and the other end is connected to a suction tool 14 having a suction part (not shown) for sucking dust. Removably connected.

  The cleaner main body 1 includes an upper case 15 and a lower case 16 that form an outer shell, and a main body handle 17 used for carrying the cleaner main body 1 is attached to an upper portion of the cleaner main body 1. The main body handle 17 is provided with a concave portion 21 that engages with a convex portion 20 of a handle portion 19 rotatably attached to the upper lid portion 18 of the dust collecting portion 4, and cleans the dust collecting portion 4. The machine body 1 is securely held and fixed.

  The front part of the electric blower 2 is supported by a front support 22 made of an elastic material, and the rear part is supported by a rear support 23 made of an elastic material, and a motor case left 24 for reducing noise generated from the electric blower 2. Further, a motor case left 24 surrounding the electric blower 2, a motor case right 25, and a soundproof case 26 covering the whole except for the suction port 27 of the electric blower 2 are provided. .

  The soundproof case 26 is formed of a soundproof case lower portion 26a and a soundproof case lid 26b, and is configured to surround the whole except the suction port 27 of the electric blower. The soundproof case 26 has an opening 30. Is provided. And this opening part 30 is opened toward the front direction of the said cleaner body 1 on the basis of the front-back direction of the cleaner body 1. FIG.

  A filter body 28 that collects very fine dust contained in the exhaust of the electric blower 2 is provided on the exhaust upstream side of the opening 30 of the soundproof case 26.

  Further, in the space between the vacuum cleaner body 1 and the dust collector 4, the upper case 15 that houses the dust collector 4 is attached to the lower case 16 of the cleaner body 1, so The case 16 and the upper case 15 constitute a closed space portion 31.

  The opening 30 of the soundproof case communicates with the closed space 31 disposed in front of the opening 30.

  Further, an exhaust passage 32 communicating with the closed space 31 and an exhaust port 34 described later is provided between the soundproof case 26 and the cleaner body 1.

  Further, the vacuum cleaner main body 1 behind the soundproof case 26 is provided with an exhaust port 34 formed in a part of the cover body 33 that forms the rear outline, and exhaust air from the electric blower 2 is discharged from the exhaust port 34. It is configured to be discharged to the outside air.

  With the configuration described above, clean air that has passed through the filter body 28 passes through the opening 30 formed in the front surface of the filter body 28, and enters the closed space 31 that communicates with the opening 30. Once it flows. The air flowing into the closed space 31 resonates to obtain the same effect as the Helmholtz resonator, and attenuates noise generated from the electric blower and exhaust wind noise. Thereafter, the exhaust gas further turns in the reverse direction, passes through the exhaust passage 32 between the lower part of the soundproof case 26 and the cleaner body 1, and toward the exhaust port 34 disposed behind the soundproof case 26. Since it is discharged, it is possible to secure a long exhaust passage from the opening 30 to the exhaust port 34, so that it is possible to more effectively attenuate noise generated from the electric blower 2 and exhaust wind noise. .

  Moreover, in the vacuum cleaner provided with the cylindrical cyclone dust box 35 provided with the cyclone dust collector in the dust collecting part, the air inlet 10 provided in the front part of the cleaner body and the inlet provided in the cylindrical cyclone dust box 35 (see FIG. (Not shown) and a pipe 36 communicating the intake port and the inflow port.

  As the inlet of the cylindrical cyclone dust box 35 is biased to the left or right, the pipe 36 communicating with the inlet 10 and the inlet is inclined to the left or right of the center of the vacuum cleaner body 1, and the pipe The closed space 31 is formed on the opposite side.

  Further, by forming the closed space portion 31 on the opposite side of the pipe 36, the closed space portion 31 having a relatively large volume can be secured on the lateral side of the pipe 36, and the closed space portion 31 is secured. The air that has entered can further resonate in the closed space 31, and the same silencing effect as that of the Helmholtz resonator can be obtained more effectively, reducing the noise from the electric blower 2 and the wind noise of the exhaust. It becomes possible to make it.

  Further, in order to form the closed space portion 31, a seal packing (not shown) is attached to the fitting portion of the upper case 15 and the lower case 16 that form the outer shell to form a soundproof chamber that eliminates air leakage. Accordingly, noise due to air leakage at the fitting portion is reduced without leaking the air that has entered the closed space portion 31 with the seal packing, and more noise in the air is resonated in the closed space portion 31. Thus, the noise from the electric blower 2 and the wind noise of the exhaust can be attenuated by the same silencing effect as the Helmholtz resonator.

  Further, as shown in FIG. 5, by adhering a sound absorbing material 37 such as urethane to the inner wall of the closed space portion 31, both effects of sound absorption by the Helmholtz resonator and the sound absorbing material 37 are obtained, and the sound becomes a high frequency sound. Wind noise can be further attenuated.

  In addition, the dust collecting unit 4 is roughly provided with a cylindrical cyclone dust box 35, an upper lid unit 18 configured to close the upper surface of the cylindrical cyclone dust box 35, and the upper lid unit 18. The handle portion 19 and a bottom lid portion 38 provided so as to close the lower surface of the cylindrical cyclone dust box 35 are configured.

  In the cylindrical cyclone dust box 35, a primary filter 39 and an extended portion 40 are attached below the primary filter 39 by means of fitting or welding with a claw, and a secondary filter is disposed above the primary filter 39. 41, a dust removing part 42 for dropping dust accumulated in the secondary filter 41 by means of vibration or the like, and a motor part 43 serving as means for giving vibration to the dust removing part 42.

  The dust-mixed air sucked into the cyclone space 44 from the intake port (not shown) of the cylindrical cyclone dust box 35 contains dust and fine dust mainly composed of cotton dust due to the swirling flow generated by the primary filter 39. The dust, mainly cotton dust, is separated into air and is accumulated in the dust accumulation space 46 through the dust collection passage 45.

  The dust mainly consisting of cotton dust accumulated in the dust accumulation space 46 forms a wall vertically upward by the extending portion 40 attached to the primary filter 39 and the inclined portion 47 formed in the cylindrical cyclone dust box 35. This prevents the return to the cyclone space 44 and increases the dust collection efficiency.

  The air containing fine dust that has passed through the primary filter 39 is filtered by the secondary filter 41, and only air that does not contain fine dust passes through the secondary filter 41 and the communication port 48, and It is sucked into the electric blower 2.

  The fine dust accumulated on the secondary filter 41 is peeled off from the secondary filter 41 by vibration applied to the dust removing portion 42, passes through the primary filter 39, and accumulates in the cylinder 49 located below the primary filter 39. .

  In the present embodiment, a cyclone type dust collecting device is used for the dust collecting unit, but an effect that noise during operation can be reduced can be obtained in the case of using a bag-like body such as a paper bag. Is.

  As mentioned above, since the vacuum cleaner concerning this invention can reduce the noise at the time of a driving | operation, it can be applied also to uses, such as a household and business use vacuum cleaner.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 2 Electric blower 4 Dust collection part 10 Intake port 15 Upper case 16 Lower case 26 Soundproof case 26a Under soundproof case 26b Soundproof case cover 27 Suction port 28 Filter body 30 Opening part 31 Closed space part 32 Exhaust passage 35 Cylindrical cyclone Dust box (Cyclone dust collector)
36 Pipe 37 Sound absorbing material

Claims (6)

A vacuum cleaner body containing an electric blower,
An exhaust port provided in the vacuum cleaner body for discharging exhaust air from the electric blower;
A dust collector disposed so as to communicate with the suction port of the electric blower;
A soundproof case covering the whole except the suction port of the electric blower;
An opening provided in the soundproof case;
A closed space provided between the vacuum cleaner body and the dust collecting part;
An exhaust passage provided between the lower part of the soundproof case and the cleaner body and communicating with the exhaust port;
The opening of the soundproof case communicates with the closed space, and the closed space communicates with the exhaust passage.
Exhaust air from the electric blower is discharged from the opening of the soundproof case, passes through the exhaust passage through the closed space, and is discharged from the exhaust port. The opening provided in the soundproof case with respect to the front-rear direction of the cleaner body is open toward the front of the cleaner body, and the closed space communicating with the opening is the opening. The vacuum cleaner is arranged in the forward direction, and the exhaust port is arranged behind the soundproof case. In a vacuum cleaner provided with a cyclone dust collector in the dust collection section,
An air inlet provided at the front of the vacuum cleaner body;
An inlet provided in the cyclone dust collector;
A pipe for communicating the inlet and the inlet;
As the inlet of the cyclone dust collector is biased to the left or right, a pipe communicating with the inlet and the inlet is installed inclined to either the left or right of the center of the cleaner body, and on the opposite side of the pipe The vacuum cleaner according to claim 1 or 2, wherein the closed space is formed. The closed space portion is configured by fitting a lower case that forms a lower portion of the cleaner body and an upper case that forms an upper portion of the cleaner body and houses the dust collecting portion in the upper portion. The seal packing is attached to the mating fitting portion so that air leakage in the closed space portion is eliminated, and the closed space portion functions as a soundproof chamber. Electric vacuum cleaner. The vacuum cleaner according to any one of claims 1 to 4, wherein a sound absorbing material such as urethane is attached to the inside of the closed space portion. The vacuum cleaner according to any one of claims 1 to 5, wherein a filter body is provided on the exhaust upstream side of the opening of the soundproof case.