JPH09149867A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the vibration of a partition inside a case body from being transmitted to the case body and to reduce noise. SOLUTION: This vacuum cleaner is provided with the case body 1 provided with a motor-driven blower room 5 incorporating a motor-driven blower 4 composed of a motor 4b and a sucking fan 4a and a dust collecting room 3 for storing dust and a partition member 6 provided with a lot of grid-shaped opening parts A6a for partitioning the dust collecting room 3 from the motor- driven blower room 5. Then, the partition member 6 is held and attached through cushioning materials A7 to the case body 1. Thus, the vibration of the partition member 6 is attenuated by the cushioning materials A7 and the vibration is hardly transmitted to the case body 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner which sucks and collects dust by utilizing intake air of an electric blower.

[0002]

2. Description of the Related Art A conventional electric vacuum cleaner which sucks and collects dust by using intake air of an electric blower has a structure shown in FIG.

In FIG. 6, a housing 31 is provided with a dust collection chamber 32 for storing the inhaled dust and a main body 34 containing an electric blower 33, and the dust collection chamber 32 and the main body 34 are connected to each other. It is divided into two by the partition wall 35. This partition wall 35
Is configured integrally with the housing 31.

Further, the electric blower 33 in the housing 31
Is supported by a support rib 36 that is provided integrally with the housing 31. Further, the exhaust port 39 of the housing 31 has a lattice window shape, and is configured so that the direction of the inner wall 40a of each lattice 40 and the exhaust flow are the same.

[0005]

According to the above configuration, the partition wall 35 for dividing the main body 34, which houses the dust collection chamber 32 and the electric blower 33, into the housing 31 is integrally formed with the housing 31. Because of the provision, when the intake air flow passes through the partition wall 35, the vibration generated in the partition wall 35 is transmitted to the housing 31 as it is, and in some cases causes the resonance of the housing 31 to cause a large noise. Was becoming.

Further, since the rear portion of the electric blower 33 is supported in the casing 31 by the supporting ribs 36 which are also integrally provided in the casing 31, the casing 31 is likely to receive the vibration of the electric blower 33. In addition, it resonated with it and caused noise.

Further, the support ribs 36 form an impermeable wall surface, whereby the ventilation area of the exhaust air of the electric blower 33 in the housing 31 is significantly narrowed by the support ribs 36 and passes through this portion. At the same time, turbulence is generated, which causes noise.

In addition, the intake flow passing through the filter 37 of the dust collection chamber 32 goes to the intake port 38 of the electric blower 33 without being rectified, and the aeration cross section is sharply reduced at the intake port 38. Turbulent flow was also generated in the part, which caused a large amount of noise.

Further, since the exhaust port 39 of the casing 31 is in the shape of a lattice window and the surfaces of the lattice 40 in the same direction as the exhaust flow are all arranged in the same direction, it is difficult for the blowing air velocity to be attenuated. There were problems such as exhaust air being blown to the body and causing discomfort, and dust on the surface to be cleaned being blown off.

The present invention has been made to solve the above problems, and an object thereof is to provide an electric vacuum cleaner with low noise.

[0011]

According to the present invention, there is provided a casing having an electric blower chamber and a dust collecting chamber, and a partition wall member having a large number of lattice-shaped openings A for partitioning the dust collecting chamber and the electric blower chamber. Equipped with
The partition member is sandwiched between the casings via a cushioning material A, and when the intake air flow passing through the dust collecting chamber passes through the grid-like openings A of the partition member, it is generated in the grid part. The vibration is less likely to be transmitted to the housing, and the generation of noise due to the vibration is reduced.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is
A housing provided with an electric blower chamber containing an electric blower composed of an electric motor and a suction fan, and a dust collection chamber for storing dust, and the dust collection chamber and the electric blower chamber having a large number of lattice-shaped openings A. And a buffer member A for partitioning the partition member.
In this configuration, the partition wall member for partitioning the dust collection chamber in the casing of the electric vacuum cleaner and the electric blower chamber containing the electric blower is separated and independent from the casing, In addition, since it is fixed to the casing via the cushioning material A, the vibration that occurs in the lattice portion when the intake air flow that has passed through the dust collection chamber passes through the lattice-shaped opening portion A of the partition wall member. Is less likely to be transmitted to the housing, and the generation of noise due to vibration is reduced.

According to a second aspect of the present invention, a rear support wall for supporting the rear of the electric blower is provided, and the rear support wall is sandwiched between the casings via the cushioning material B. Since the rear support wall for supporting and fixing the rear of is also separated and independent from the housing and is supported and fixed to the housing via the cushioning material B, vibration of the electric blower is less likely to be transmitted to the housing. Noise reduction can be reliably prevented.

According to a third aspect of the present invention, a plurality of lattice-shaped openings B are formed in the rear support wall, and the inner wall surface of the openings B is parallel to the flow direction of exhaust gas from the electric blower. Since the rear support wall is formed with a plurality of lattice-shaped openings B, and the inner wall surface of the openings B is arranged so as to be parallel to the flow direction of exhaust gas from the electric blower,
At the opening B of the rear support wall, there is no large change in the ventilation cross-sectional area of the exhaust flow from the electric blower, and the inner wall surface of the opening B rectifies the exhaust flow, so that turbulent flow of the exhaust flow occurs at this portion. It is possible to suppress noise generation due to.

According to a fourth aspect of the present invention, the lattice frame of the partition wall member is radially formed, and the central portion of the lattice frame is substantially positioned on an axis passing through the rotation center of the suction fan and extends radially. It is inclined in the same direction as the rotation direction of the suction fan, and the intake flow that has passed through the dust collection chamber becomes a tornado in the same direction as the rotation direction of the suction fan of the electric blower and reaches the suction fan, which causes noise. The turbulence that causes it is less likely to occur.

According to a fifth aspect of the present invention, the housing is provided with an exhaust port for communicating the electric blower chamber with the outside, the exhaust port is in the shape of a lattice window, and the lattice has a width in the exhaust flow direction. The direction of the surface that follows the exhaust flow is made radial, and the exhaust gas from the housing can be widely diffused without being concentrated in a specific direction, so the exhaust gas blowing speed is attenuated in a short distance, and No more discomfort by spraying on the body or blowing away dust on the surface to be cleaned.

(Embodiment 1) Next, a first embodiment of the present invention will be described with reference to FIG.

The housing 1 has a filter for separating and collecting dust.
A dust collection chamber 3 containing 2 and an electric blower chamber 5 containing an electric blower 4 are provided. The electric blower 4 includes a suction fan 4a that generates an intake air flow, an electric motor 4b that drives the suction fan 4a, an intake port 4c, and a fan cover 4d that covers the suction fan 4a.

Reference numeral 6 is a partition member for partitioning the dust collection chamber 3 and the electric blower chamber 5, and has a large number of lattice-shaped openings A6a.
The partition member 6 is supported and fixed to the housing 1 via a cushioning material A7 made of foamed rubber or the like. Further, the cushioning material A7 supports the front outer peripheral portion of the electric blower 4.

The operation of the above configuration is as follows.
The suction fan 4a is rotated by the drive of the electric motor 4b, an intake air flow is generated, and the intake air flow passes through the partition wall member 6. At that time, vibration is generated in the partition member 6 by the intake air flow, but since the partition member 6 is sandwiched by the housing 1 via the cushioning material A7, the vibration is less likely to be transmitted to the housing 1. Further, since the vibration of the electric blower 4 is less likely to be transmitted to the housing 1 by the cushioning material A7, noise due to the vibration can be significantly reduced.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIG.

Reference numeral 8 denotes an electric blower 4 in the electric blower chamber 5.
The cushioning material B made of rubber is a rear support wall that supports and fixes the rear side of the
It is supported and fixed to the housing 1 via 9.

With the above structure, the vibration generated by the electric blower 4 during operation is less likely to be transmitted to the housing 1 by the cushioning material B9, so that the noise due to the vibration can be greatly reduced.

(Third Embodiment) FIG. 3 shows a third embodiment of the present invention, in which the rear support wall 8 has a lattice-shaped opening B8.
A plurality of a are provided, and the inner wall surface 8b of the opening B8a is parallel to the flow A of the exhaust gas from the electric blower 4.

With the above construction, the ventilation resistance becomes extremely small due to the plurality of lattice-shaped openings B8a provided in the rear support wall 8, so that the exhaust flow from the electric blower 4 in the housing 1 in this portion is extremely small. The change in the ventilation cross-sectional area is small and turbulence is less likely to occur.

Further, since the inner wall surface 8b of the opening B8a of the rear support wall 8 is arranged in parallel with the flow A of the exhaust gas from the electric blower 4, the exhaust flow is rectified and turbulent flow is less likely to occur. The generation of noise due to the flow can be suppressed.

(Embodiment 4) FIG. 4 shows a fourth embodiment, in which the lattice frame 10 of the partition wall member 6 is radially formed, and its center portion 6b is an axis passing through the rotation center of the suction fan 4a. The lattice frames 10 which are substantially positioned on the line and extend radially are inclined in the same direction as the rotation direction of the suction fan 4a.

With the above-mentioned structure, the intake air flow passing through the filter 2 in the dust collecting chamber 3 becomes a tornado shape and is guided to the suction fan 4a of the electric blower 4. Therefore, turbulence of the intake air flow is less likely to occur due to a sudden change in the ventilation cross-sectional area at the intake port 4c provided in the fan cover 4d that covers the suction fan 4a, and noise due to it is less likely to occur.

(Embodiment) FIG. 5 shows a fifth embodiment, in which a casing 1 is provided with an exhaust port 11 for communicating the electric blower chamber 5 with the outside, and the exhaust port 11 has a lattice window shape. In addition, the grid 12 has a width in the exhaust flow direction, and the surface 13 along the exhaust flow is oriented radially.

With the above structure, the diffusion area of the exhaust gas after being blown out from the housing 1 is widened so that the blowing speed after the blowing is rapidly attenuated in a short distance. Therefore, it is possible to prevent the exhaust air from hitting the user's body and causing discomfort or blowing off dust on the surface to be cleaned.

[0031]

As described above, according to the first aspect of the present invention, the partition member is separated from the housing and independent of each other, and is fixed to the housing through the cushioning material A. When the intake air flow that has passed through the dust collecting chamber passes through the lattice-shaped openings A of the partition wall member, the vibration generated in the lattice portion is less likely to be transmitted to the housing, and noise can be reduced.

According to the second aspect of the present invention, since the rear support wall for supporting and fixing the electric blower in the housing is separated and independent, and is supported and fixed to the housing via the cushioning material, the vibration of the electric blower is caused by the housing. The effect is that it is not transmitted to the body, and the generation of noise due to it is reliably prevented.

According to the third aspect of the present invention, since the rear support wall support is formed in a lattice shape in which the air pressure loss is extremely small, the change in the ventilation cross-sectional area at this portion with respect to the intake flow of the electric blower in the housing is small, Therefore, the generation of turbulence in this portion is reduced, and the effect of reliably reducing the generation of noise can be obtained.

In the invention according to claim 4, since the radially extending lattice frame is inclined in the same direction as the rotation direction of the suction fan, the intake air flow becomes a tornado shape in which it rotates in the same direction as the rotation direction of the suction fan, It is possible to reduce the generation of turbulence due to a sudden change in the ventilation cross-sectional area from the dust collection chamber to the intake port of the fan cover, and to suppress the generation of noise.

According to the fifth aspect of the present invention, the exhaust port has a lattice window shape, and the lattice has a width in the exhaust flow direction so that the direction of the surface along the exhaust flow is radial. Since the exhaust gas is diffused widely without being concentrated in a specific direction, the exhaust gas blowing speed is attenuated over a short distance, which may cause discomfort by blowing it on the user's body or blowing off dust on the surface to be cleaned. You won't get tired.

[Brief description of the drawings]

FIG. 1 is a sectional view of an essential part of an electric vacuum cleaner showing a first embodiment of the present invention.

FIG. 2 is a sectional view of an essential part of an electric vacuum cleaner showing a second embodiment of the present invention.

FIG. 3 is a sectional view of an essential part of an electric vacuum cleaner showing a third embodiment of the present invention.

FIG. 4A is a plan view of a partition wall member of an electric vacuum cleaner according to a fourth embodiment of the present invention. FIG. 4B is a sectional view of the partition wall member.

FIG. 5 is a cross-sectional view of an essential part of an exhaust port of an electric vacuum cleaner showing a fifth embodiment of the present invention.

FIG. 6 is a sectional view of a main part of a conventional electric vacuum cleaner.

[Explanation of symbols]

 1 Case 3 Dust collection chamber 4 Electric blower 4a Suction fan 4b Electric motor 5 Electric blower chamber 6 Partition member 6a Opening A 7 Buffer material A 8 Rear support wall 9 Buffer material B

Claims (5)

[Claims] 1. A housing having an electric blower chamber containing an electric blower composed of an electric motor and a suction fan, and a dust collecting chamber for storing dust, and a dust collecting chamber having a large number of lattice-shaped openings A. An electric vacuum cleaner comprising a partition wall member for partitioning a room from an electric blower room, wherein the partition wall member is sandwiched by the cushioning material A in the housing. 2. The electric vacuum cleaner according to claim 1, wherein a rear support wall that supports the rear of the electric blower is provided, and the rear support wall is sandwiched between the casings via a cushioning material B. 3. The rear support wall according to claim 2, wherein a plurality of lattice-shaped openings B are formed in the rear support wall, and the inner wall surfaces of the openings B are arranged so as to be parallel to the flow direction of the exhaust gas from the electric blower. Vacuum cleaner. 4. A lattice frame of the partition wall member is radially formed, a central portion thereof is substantially positioned on an axis passing through a rotation center of the suction fan, and a radially extending lattice frame is in the same direction as the rotation direction of the suction fan. The vacuum cleaner according to any one of claims 1 to 3, which is inclined. 5. The housing is provided with an exhaust port that communicates the electric blower chamber with the outside, the exhaust port is in the shape of a lattice window, and the lattice has a width in the exhaust flow direction and the direction of the surface along the exhaust flow. The vacuum cleaner according to any one of claims 1 to 4, wherein: