JP2002159924A - Blower/suction apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a blower/suction apparatus capable of significantly reduce the amount of sand and dust which leak from a dust collecting means to the outside. SOLUTION: The blower/suction apparatus has a motor-driver for F, a blower passage B connected to the outlet side Fout of the fan F and has a blowing nozzle Bn, a suction passage V which is connected to the inlet side Fin of the fan F and has a vacuum nozzle Vn, a dust collecting means DC which is connected to the downstream side of the fan F in the air suction direction in the suction passage V, and a switching means SW for selectively switching to either of an air blowing mode or a suction mode. The dust collecting means DC is constituted of an inner side dust collecting body 1 permeable to air and outer side duct collecting bodies 2 and 8 which are provided at the outside of the inner side dust collecting body 1 at an interval. A pressure reducing means RP for reducing the pressure of a space 6 between the inner side dust collecting body 1 and the outer side duct collecting bodies 2 and 8 is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blower / suctioner.

[0002]

2. Description of the Related Art Generally, an air blower / suctioner includes a fan,
It is provided with a blowing path, a suction path, a dust collecting means, and a switching means. The fan is driven by an electric motor or the like. The blowing path is connected to the fan and has a blower nozzle. The suction path is connected to the fan and has a vacuum nozzle. The dust collecting means is connected to the downstream side of the fan in the air suction direction in the suction path. The switching means is provided at a connecting portion between the air blowing path and the suction path, and has an operation of selectively switching any one of the air blowing mode and the suction mode.

[0003] Therefore, the operator can select one of the desired blowing mode and the suction mode by operating the switching means, and can perform either the blowing operation or the suction operation.

[0004]

However, in the above-described conventional blower / suction device, when used in the suction mode, a large amount of dust leaks from the dust collecting means.
If the suction operation is performed in a state where the air is dry, for example, during a period of fine weather, a large amount of dust may be generated.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an air blower capable of significantly reducing the amount of dust and the like leaking from the dust collecting means to the outside.
It is to provide a suction device.

[0006]

According to a first aspect of the present invention, there is provided a fan (F) which is driven by power and connected to an outlet (Fout) of the fan (F). Blower path (B) having a blower nozzle (Bn)
A suction path (V) connected to the inlet (Fin) of the fan (F) and having a vacuum nozzle (Vn); and a downstream side of the fan (F) in the air suction direction in the suction path (V). Dust collection means (DC) connected to the side
And a switching unit (SW) for selectively switching any one of a blowing mode and a suction mode, wherein the dust collecting unit (DC) has a gas-permeable inner dust collecting body. (1) and an outer dust collector (2, 8) arranged at an interval outside the inner dust collector (1). The inner dust collector (1) and the outer dust collector. Body (2,
The pressure reducing device (RP) for reducing the pressure in the space (6) between the pressure reducing device and the pressure reducing device (8) is provided.

According to a second aspect of the present invention, in the apparatus of the first aspect, the pressure reducing means (RP) is provided with the inner dust collecting body (1).
And a connecting passageway (3) for connecting a space (6) between the vacuum nozzle (Vn) and the outer dust collecting body (2, 8) to a distal end side of the vacuum nozzle (Vn).

According to a third aspect of the present invention, in the apparatus of the first aspect, the pressure reducing means (RP) is provided with the outer dust collecting body (2).
It is characterized by comprising a ventilation hole (7) formed in a.

According to a fourth aspect of the present invention, in the apparatus according to the first aspect, the pressure reducing means (RP) is composed of a first pressure reducing means and a second pressure reducing means, and the first pressure reducing means is provided with the inner dust collecting means. A space (6) between the body (1) and the outer dust collector (2)
And a connection passage (3) for connecting the vacuum cleaner (Vn) to a tip end of the vacuum nozzle (Vn), and the second pressure reducing means is provided with a vent (7) formed in the outer dust collector (2). Characterized by the following.

According to a fifth aspect of the present invention, in the apparatus according to any one of the first to fourth aspects, the outer dust collecting body (2) has rigidity.

According to a sixth aspect of the present invention, in the apparatus according to any one of the first to fourth aspects, the outer dust collecting body (8) has flexibility.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a blower / suctioner according to a first embodiment of the present invention will be described in detail with reference to FIGS.

The blower / suction unit according to the first embodiment of the present invention comprises a fan F, a blower path B having a blower nozzle Bn, a suction path V having a vacuum nozzle Vn, a dust collecting means DC, and a switching means SW. It has a basic configuration consisting of

As shown in FIG. 2, the fan F is housed in a housing H molded from a hard synthetic resin.
The fan F is driven by an electric motor (not shown).

The blower nozzle Bn for the blowing path B is
It is formed integrally with the housing H, and is connected to the outlet side Fout of the fan F via a branch pipe 4 described later.

Vacuum nozzle Vn for suction path V
Is also formed integrally with the housing H, and the inlet side F of the fan F is formed.
connected to in. The vacuum nozzle Vn is shown in FIG.
As shown in the figure, the nozzle is disposed substantially parallel to the blower nozzle Bn, and the tip Bou of the blower nozzle Bn
t is adjacent to the tip Vin of the vacuum nozzle Vn.

The dust collecting means DC is connected to the downstream side of the fan F in the air suction direction in the suction path V, that is, to the second outlet 4c side of the branch pipe 4 described later.

The switching means SW is incorporated in the branch pipe 4. The branch pipe 4 is connected to the inlet 4a connected to the outlet Fout side of the fan F in the suction path V, the first outlet 4b connected to the rear end of the blower nozzle Bn, and to the dust collecting means DC. And a second outlet 4c.
As shown in FIG. 2, a rotary valve 5 is rotatably incorporated in the branch portion of the branch pipe 4. The rotary valve 5 has a passage 5a. The passage 5a connects the inlet 4a to the first outlet 4b and the second outlet 4c in accordance with the rotational position of the rotary valve 5.
Selectively contact any one of

The basic structure of the above-mentioned air-blowing / suction device is the same as the structure of the conventional air-blowing / suction device, and a detailed description thereof will be omitted. In addition, in FIG.
Denotes a handle formed integrally with the housing H.

The blower / suction device of the present invention has a dust collecting means DC having a double structure and a pressure reducing means RP.

That is, the dust collecting means DC comprises: an inner dust collecting body 1;
And an outer dust collector 2. The inner dust collecting body 1 is formed of a dust collecting bag having air permeability, and is detachably attached to the second outlet 4 c of the branch pipe 4. The material used for the inner dust collecting body 1 is arbitrary as long as it has a predetermined air permeability and has a dust collecting action. For example, a synthetic resin net, woven fabric, nonwoven fabric, or the like is used. here,
The predetermined air permeability means, for example, an action of collecting relatively large dust such as fallen leaves and passing small dust such as sand dust along with the movement of air.

The outer dust collecting body 2 is arranged outside the inner dust collecting body 1 with a space therebetween. That is, the outer dust collector 2 is fixed to the lower end of the housing H so as to cover the inner dust collector 1, and has an opening on one side surface.
And a cover 2b connected to the outer dust collector main body 2a at a position corresponding to the opening so as to be openable and closable via a mounting screw 2c.
It is composed of Outer dust collector body 2a and cover 2b
Has rigidity, that is, is molded from the same hard synthetic resin as the housing H. In FIGS. 3 and 4, reference numeral 2ax denotes a rib having an operation of holding the inner dust collecting body 1 at a predetermined position.

The pressure reducing means RP has a function of reducing the pressure in the space 6 between the inner dust collector 1 and the outer dust collector 2.
In the first embodiment, the decompression means RP makes the space 6 between the inner dust collector 1 and the outer dust collector 2 a vacuum nozzle V
n, and a connection passage 3 connected to the end Vin side. As shown in FIG. 2, the connection passage 3
The space 6 communicates with the root side portion of the blower nozzle Bn. Therefore, the connection passage 3 divides the space 6 through the blower nozzle Bn.
It is connected to the end Vin side of the vacuum nozzle Vn.

Next, a description will be given of a method of using the blower / suction device according to the first embodiment of the present invention. First, when the apparatus is used in the suction mode, the switching means SW is operated to rotate the rotary valve 5, and as shown in FIG. 2, the inlet 4a of the branch pipe 4 is connected to the second outlet 4c. Connecting.

When the fan F is rotated in such a state, dust is sucked together with air from the front end Vin of the vacuum nozzle Vn, and is sent into the inner dust collector 1. Here, the inner dust collecting body 1 collects relatively large dust such as fallen leaves, and passes small dust such as sand dust.

The dust and the like that have reached the space 6 after passing through the inner dust collector 1 pass through the connection passage 3 together with air, pass through the blower nozzle Bn, and are sent to the tip Bout. As described above, the tip Bout of the blower nozzle Bn is adjacent to the tip Vin of the vacuum nozzle Vn, and suction is performed at the tip Vin of the vacuum nozzle Vn. Therefore, the tip Bou of the blower nozzle Bn
The dust and the like sent to the nozzle t are immediately discharged to the vacuum nozzle Vn.
Is sucked from the front end Vin.

Since the above-described suction is performed continuously, dust and the like that have passed through the inner dust collector 1 are not diffused to the outside of the apparatus. In addition, the air that has passed through the inner dust collecting body 1 and reached the space 6 between the inner dust collecting body 1 and the outer dust collecting body 2 is returned to the suction path V side. An increase in pressure in the space 6 due to the rotation is avoided, and therefore, a reduction in dust collection capability is prevented.

After the suction operation is completed, the cover 2b is opened and the inner dust collector 1 is removed from the second outlet 4c of the branch pipe 4 in order to remove dust collected in the inner dust collector 1. Just remove it.

When the above device is used in the air blowing mode, the switching means SW is operated to rotate the rotary valve 5 to connect the inlet 4a of the branch pipe 4 to the first outlet 4b. In such a state, if the fan F is rotated,
The airflow generated by this passes through the blower nozzle Bn and is blown outward from the tip Bout.

Next, the air blower according to the second embodiment of the present invention will be described.
The suction device will be described in detail with reference to FIGS.

The blower / suction unit according to the second embodiment of the present invention has the same structure as that of the first embodiment except that the decompression means RP is constituted by the vent 7 formed in the outer dust collector 2. This is the same as the blower / suction device according to the above. Therefore, the same components are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 5 and FIG. 6, the vent 7 comprises a plurality of small holes 2ay formed in a lower portion at the rear end of the outer dust collecting body 2. The filter 2az is disposed inside. The air permeability of the filter 2az is not particularly limited, but desirably has an action of filtering small dust such as dust.

Although the position and the number of the ventilation holes 7 are arbitrary, it is desirable that the air discharged through the air outlets be directed away from the user of the apparatus. A similar vent (not shown) may be provided in the lower part of the tip of the outer dust collector 2.

The method of using the blower / suction device according to the second embodiment of the present invention is the same as the method of using the blower / suction device according to the first embodiment of the present invention. However, in the blower / suction device according to the second embodiment, the pressure reducing means RP
A vent 7 is provided instead of the connection passage 3. Therefore, a part of small dust such as sand and the like that has reached the space 6 after passing through the inner dust collector 1 is collected by the filter 2az, and the amount of small dust leaking to the outside is significantly reduced. Moreover, the inner dust collector 1 passes through the inner dust collector 1.
The air that has reached the space 6 between the outer dust collecting body 2 and the outside dust collecting body 2 is escaped to the outside from the ventilation port 7, so that a pressure increase in the space 6 due to the rotation of the fan F is avoided, and thus the dust collecting capacity is reduced. Reduction is prevented.

The first and second embodiments of the present invention are combined, that is, the decompression means RP is composed of the first decompression means and the second decompression means, and the first decompression means is connected to the inner dust collecting means. The space 6 between the body 1 and the outer dust collecting body 2 is constituted by a connection passage 3 for connecting to the tip side of the vacuum nozzle Vn, while the second pressure reducing means is provided by a ventilation formed in the outer dust collecting body 2. The mouth 7 may be used.

Next, according to the third embodiment of the present invention,
The suction device will be described in detail with reference to FIGS.

The blower / suction device according to the third embodiment of the present invention has the same configuration as that of the first embodiment except that the outer dust collector 8 has flexibility.
This is the same as the blower / suction device according to the first embodiment described above. Therefore, the same components are denoted by the same reference numerals, and description thereof will be omitted.

That is, the outer dust collector 8 is formed in a bag shape from a flexible synthetic resin such as a nylon film. The outer dust collector 8 is attached to the lower end of the housing H via a fastener 9 so as to cover the inner dust collector 1. As shown in FIG. 7, the outer dust collecting body 8 has a zipper 8a for opening and closing the same.

The method of using the blower / suction device according to the third embodiment of the present invention is the same as the method of using the blower / suction device according to the first embodiment of the present invention, and the same technical effects are obtained. Brought. After the suction operation is completed, the zipper 8a is opened in order to remove dust collected in the inner dust collector 1, and then the inner dust collector 1 is removed from the second outlet 4c of the branch pipe 4. Remove it from.

[0040]

According to the first aspect of the present invention, a power-driven fan, a blower passage connected to an outlet side of the fan and having a blower nozzle, and a vacuum nozzle connected to an inlet side of the fan are provided. A suction path, a dust collecting means connected to the downstream side of the fan in the air suction direction in the suction path, and a switching means for selectively switching any one of a blowing mode and a suction mode. In the blower / suction device, the dust collecting means includes an inner dust collector having air permeability, and an outer dust collector which is arranged outside the inner dust collector at intervals. Since the pressure reducing means for reducing the pressure of the space between the body and the outer dust collecting body is provided, the amount of dust and the like leaking from the dust collecting means to the outside is significantly reduced, and the high dust collecting ability is improved. Can be maintained Kill.

In the blower / suction device according to the present invention, as described in claim 2, a pressure reducing means for connecting a space between the inner dust collector and the outer dust collector to a tip end of the vacuum nozzle. With the connection passage, leakage of dust and the like to the outside can be substantially completely prevented.

In the blower / suction device of the present invention, the structure can be simplified if the pressure reducing means is constituted by a vent formed in the outer dust collecting body.

In the blower / suction device according to the present invention, the pressure reducing means comprises a first pressure reducing means and a second pressure reducing means, and the first pressure reducing means comprises an inner dust collecting body and an outer pressure reducing means. If the space between the dust collecting body and the second decompression means is constituted by a connecting passage for connecting the space between the dust collecting body and the front end side of the vacuum nozzle, the dust collecting means is constituted by a vent formed in the outer dust collecting body. While reducing the amount of dust and the like leaking from the outside to the outside, the decompression efficiency can be increased and a high dust collection ability can be maintained.

In the blower / suction device according to the present invention, if the outer dust collector has rigidity, the inner dust collector can be reliably protected by the outer dust collector. .

In the blower / suction device of the present invention, as described in claim 6, if the outer dust collecting body has flexibility, the size of the entire device can be reduced when not in use. .

[Brief description of the drawings]

FIG. 1 is a front view of a blower / suctioner according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the device of FIG. 1 as viewed from the back side.

FIG. 3 is an enlarged view of the dust collecting means of FIG. 2;

FIG. 4 is a diagram showing an open / closed state of a cover in the apparatus of FIG. 1;

FIG. 5 is an enlarged view of a dust collecting means in a blower / suction device according to a second embodiment of the present invention.

FIG. 6 is a diagram showing an open / closed state of a cover in the apparatus of FIG. 5;

FIG. 7 is a sectional view of a blower / suction device according to a third embodiment of the present invention as viewed from the rear side.

8 is a plan view of the apparatus of FIG. 7;

[Explanation of symbols]

 F Fan B Ventilation path Bn Blower nozzle V Suction path Vn Vacuum nozzle DC Dust collector 1 Inner dust collector 2, 8 Outer dust collector 6 Space SW Switching means RP Decompression means 3 Connection passage 7 Vent

Continued on the front page F term (reference) 3B116 AA46 BB71 BB87 4D058 JA04 JA12 KC14 KC81 QA01 QA03 QA11 QA19 QA23 QA25 SA20

Claims (6)

[Claims] 1. A power-driven fan, a blowing path connected to an outlet side of the fan and having a blower nozzle, a suction path connected to an inlet side of the fan and having a vacuum nozzle, and air in the suction path. A blower / suction device comprising: a dust collector connected to a downstream side of the fan in a suction direction; and a switch for selectively switching any one of a blow mode and a suction mode. Is composed of an inner dust collector having air permeability, and an outer dust collector arranged at an interval outside the inner dust collector, between the inner dust collector and the outer dust collector. A pressure reducing means for lowering the pressure in the space. 2. The pressure reducing means comprises a connection passage for connecting a space between the inner dust collector and the outer dust collector to a tip end of the vacuum nozzle. Item 10. The apparatus according to Item 1. 3. The apparatus according to claim 1, wherein said pressure reducing means comprises a vent formed in said outer dust collector.
An apparatus according to claim 1. 4. A vacuum nozzle comprising: a first pressure reducing means and a second pressure reducing means, wherein the first pressure reducing means forms a space between the inner dust collector and the outer dust collector with the vacuum nozzle. It consists of a connection passage for connecting to the tip side of the
The apparatus according to claim 1, wherein the second pressure reducing means comprises a vent formed in the outer dust collector. 5. The apparatus according to claim 1, wherein the outer dust collector has rigidity. 6. The apparatus according to claim 1, wherein the outer dust collector has flexibility.