JP3407793B2 - Vacuum cleaner suction body - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction port body of a circulation type vacuum cleaner for returning air exhausted by an electric blower to the suction port body.

[0002]

2. Description of the Related Art Conventionally, a suction port body of an electric vacuum cleaner for circulating air is shown in FIG. 8 (see Japanese Utility Model Publication No. 39-36553). In FIG. 8, reference numeral 1 denotes a main body in which an electric blower 2 is incorporated, and inside the main body 1, a dust collection chamber 3 that is made negative in pressure by the electric blower 2 is formed. Is provided. Reference numeral 5 denotes a suction port body. In the suction port body 5, a suction chamber 6 having a suction opening 6B on the bottom surface is formed, and a rotary brush 7 is provided in the suction chamber 6. A suction air passage 6A for sucking dust is formed in the suction chamber 6.

A fan chamber 8 is defined in the suction port body 5, and a fan 9 is rotatably provided in the fan chamber 8. The rotation of the fan 9 causes the rotary brush 7 to rotate.
Is designed to rotate. An air outlet 10 is provided at the front of the suction port body 5, and the air outlet 10 is connected to the fan chamber 8 by a communication passage 11.

The suction port body 5 and the main body 1 are a double hose 1 composed of a suction hose 12A and an exhaust hose 12B.
2 are connected by a suction hose 12A to connect the suction air passage 6A of the suction port body 5 to the dust collection chamber 3 of the main body 1, and the exhaust hose 12B to exhaust the fan chamber 8 of the suction port body 5 and the exhaust gas of the main body 1. It communicates with the chamber 13.

Then, when the dust collection chamber 3 is made to have a negative pressure by the electric blower 2, the air for sucking dust passes from the suction chamber 6 to the dust collection chamber 3 of the main body 1 through the suction air passage 6A and the suction hose 12A. The sucked air is exhausted from the exhaust chamber 13 through the exhaust hose 12B to the fan chamber 8 of the suction port body 5, whereby the turbine 9 rotates and the rotating brush 7 rotates. Then, air is blown from the fan chamber 8 through the communication passage 11 to the floor surface 14 from the air outlet 10 and returns to the suction chamber 6. Further, the dust blown up by the rotary brush 7 is blown up by this blowout, and the blown up dust is sucked by the suction air passage 6A.

In this way, the air is circulated to suck the dust and the fan 9 is rotated to rotate the rotating brush 9. Then, the dust is scraped up by the rotation of the rotary brush 9, and is blown with air from the air outlet 10 toward the floor surface to blow up the dust scraped up by the rotary brush 9. The air will be sucked in efficiently by the suction air passage 6A.

[0007]

However, in the suction port body 5 of such an electric vacuum cleaner, since the air outlet 10 and the fan chamber 8 are provided in series, the air outlet 10
When the wind speed of the air blown out from the fan chamber is increased, the flow velocity of the exhaust gas flowing through the fan chamber 8 becomes weaker, and the rotation speed of the fan 9 becomes slower. On the contrary, if the rotation speed of the fan (turbine) 9 is increased, there is a problem that the flow velocity of the air blown out from the air outlet 10 is reduced.

The present invention has been made in view of the above problems, and an object thereof is to make it possible to increase the rotational speed of a turbine and also increase the flow velocity of the air blown out from the blowout opening. To provide the body.

[0009]

In order to achieve the object, the invention described in claim 1 is provided with a suction chamber having a suction opening on the bottom surface of the suction port body, and rotatably provided in the suction chamber.
Rotation cleaning body and the turbulence that rotates this rotation cleaning body
Suction chamber that communicates with the turbine chamber that is provided with the suction chamber.
Equipped with an intake air passage and an exhaust air passage communicating with the turbine chamber
For example, sucked into the dust collecting chamber air of the suction chamber by communicating the dust collecting chamber of the suction air passage and the cleaner main body, wherein
By communicating the exhaust air passage with the exhaust chamber of the cleaner body, the air exhausted from the exhaust chamber is made to flow to the turbine chamber to rotate the turbine, and the air in this turbine chamber is sucked into the suction chamber to circulate the air. Electric sweeping
It is a suction port used for removing the dust and dust on the surface to be cleaned.
Blow up the air outlet for blowing exhaust air is provided, characterized in that the communication air passage communicating the outlet and said exhaust air passage is provided in parallel with the turbine chamber.

The invention of claim 2 is characterized in that the air outlet is provided at a position separated from the surface to be cleaned by a predetermined distance.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a suction inlet of an electric vacuum cleaner according to the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 20 denotes an electric vacuum cleaner having a cleaner body 21 and a suction port body 30. Inside the cleaner body 21, a dust collecting chamber 22 and a negative pressure for the dust collecting chamber 22 are provided. The electric blower 23 and the exhaust chamber 24 from which air is exhausted from the electric blower 23 are provided. A dust collecting filter 25 is attached to the dust collecting chamber 22.

As shown in FIGS. 2 to 4, the suction port body 30 is provided with a suction port body 31. The suction port body 3
1 has a suction chamber 3 having a suction opening 33 on a bottom surface 32 on the front side thereof.
4, a rotary cleaning body 35 is rotatably provided in the suction chamber 34. A turbine chamber 36 is partitioned by a partition wall 46 on the right side behind the suction chamber 34, and a turbine 37 is rotatably provided in the turbine chamber 36. Rotating shaft 38 of turbine 37 and rotating cleaning body 35
An endless belt 40 is wound around the rotating shaft 39 of the rotary cleaning body 35, and the rotary cleaning body 35 is rotated by the rotation of the turbine 37.

A connecting pipe 41 is provided behind the suction chamber 34.
Are rotatably connected in the vertical direction (in FIG. 3), the connecting pipe body 41 is composed of a suction connecting pipe 42 and an exhaust connecting pipe 43, and the suction connecting pipe 42 and the suction chamber 34 are connected to each other. 35 are communicated with each other through a suction air passage 44 formed inside. Further, the exhaust connection pipe 43 and the turbine chamber 36 are communicated with each other via an exhaust air passage 45 formed in the suction port body 35. The suction connecting pipe 42 is connected to the dust collecting chamber 2 via the suction hose 61.
The exhaust connection pipe 43 communicates with the exhaust chamber 24 via the exhaust hose 62.

The partition wall 46 of the turbine chamber 36 and the partition wall 47 partitioning the suction chamber 34 are provided with holes 48, and the holes 48 connect the turbine chamber 36 and the suction chamber 34. A hole 50 is formed in the bottom wall 45A of the exhaust air passage 45.
Are formed.

An exhaust chamber 51 is sectioned and formed at the rear bottom of the suction chamber 34, and the exhaust chamber 51 and the exhaust air passage 45 are formed in the hole 5.
It communicates through 0. The front partition wall 52 on the front side that partitions the exhaust chamber 51 is inclined obliquely forward, and a plurality of slit-shaped outlets 53 extending in the left-right direction that blow out air toward the floor surface are provided on the front partition wall 52. It is provided. The position of the air outlet 53 is at a position separated from the floor surface Y by a predetermined distance. In front of the front partition wall 52, an inclined wall 58 that partitions a part of the suction opening 33 is formed.
A plurality of holes 54 communicating with the suction chamber 34 are provided in the upper part of the.

Then, the communication air passage 70 having the outlet 53 and the communication air passage 8 having the turbine chamber 36 are provided.
0 is, conceptually, as shown in FIG.
And the exhaust pipe 43 are provided in parallel.

Reference numeral 55 denotes a pair of rollers provided on the front side of the suction port body 31, and 56 denotes a pair of rear wheels provided at the rear portion of the suction port body 31.

Next, the operation of the suction port body of the vacuum cleaner according to the above embodiment will be described.

When the electric blower 23 is driven and the dust collection chamber 22 becomes negative pressure, dust is sucked together with air from the suction chamber 34 of the suction port body 31, and the dust and air are sucked into the suction air passage 44 and the suction connection pipe 42. And it is sucked into the dust collecting chamber 22 of the main body 21 through the suction hose 61.

On the other hand, the air in the dust collection chamber 22 that is exhausted by the drive of the electric blower 23 is exhausted to the exhaust chamber 24, and the air exhausted to the exhaust chamber 24 is further exhausted to the suction port main body 31 through the exhaust connection pipe 62. The gas is exhausted to the exhaust connection pipe 43.
The air exhausted to the exhaust connection pipe 43 is exhausted to the turbine chamber 36 via the exhaust air passage 45, and the air exhausted to the turbine chamber 36 is sucked into the suction chamber 34 through the holes 48 of the partition walls 46 and 47. Will be done. Then, the turbine 37 is rotated by the air exhausted into the turbine chamber 36, and the rotation of the turbine 37 rotates the rotary cleaning body 35 to scrape up the dust on the floor surface Y.

Further, the air exhausted to the exhaust air passage 45 is exhausted to the exhaust chamber 51 through the hole 50 of the bottom wall 45A, and the air exhausted to the exhaust chamber 51 is directed to the floor surface Y from the air outlet 53. I will blow out. Dust on the floor surface Y is blown up by the air blown out from the air outlet 53, and the dust and air pass through the holes 54 of the inclined wall 58 and the suction chamber 34.
Is sucked into. Then, the dust and air are sucked into the dust collecting chamber 22 in the same manner as described above, and the air is exhausted from the dust collecting chamber 22 to the exhaust chamber 24 and circulates.

By the way, since the turbine chamber 36 and the air outlet 53 are provided in the communication air passages 70, 80 provided in parallel, the air outlet 53 is cut off so as to increase the flow velocity of the air blown out from the air outlet 53. Turbine 37 even if the area is reduced
The rotation speed of will not slow down. On the contrary, even if the flow velocity of the air flowing through the turbine chamber 36 is increased so as to increase the rotation speed of the turbine 37, the flow velocity of the air blown out from the air outlet 53 does not decrease. That is,
The rotation speed of the turbine 37 can be increased while increasing the flow velocity of the air blown out from the air outlet 53.

Further, since the air outlet 53 is provided in the vicinity of the floor surface Y, when the floor surface Y is a carpet, the air outlet 53 is blocked by the carpet, and as a result, the pressure in the communication air passage 80 increases. The rotation speed of the turbine 37 increases. On the contrary, floor surface Y
In the case of a flooring or the like, the outlet 53 is not closed, so that the pressure in the communication air passage 80 is reduced and the rotational speed of the turbine 37 is reduced as compared with the above. That is, the turbine 37
The rotation speed of the turbine 37 is increased in the case of a carpet or the like which is desired to be cleaned by increasing the rotation speed thereof, and the rotation speed of the turbine 37 is decreased in the case of a floor plate which is desired to be decreased by decreasing the rotation speed of the turbine 37.

FIG. 6 and FIG. 7 show another embodiment, in which the blowout port 91 and the suction chamber 3 are shown.
4 is provided so as to face the air outlet 4, and the air is blown directly from the air outlet 91 to the suction chamber 34.
Is provided at a position separated from the floor surface Y by a predetermined distance.

In FIG. 7, the bottom wall 51 of the exhaust chamber 51 located at a predetermined distance (1.5-2 mm) from the floor surface Y is shown.
An air outlet 92 is provided at A, and air is blown from the air outlet 92 toward the floor surface Y. Since the air outlet 92 is near the suction chamber 34, the air blown from the air outlet 92 is sucked into the suction chamber 34 and does not leak to the outside of the suction port main body 31.

In the case of FIG. 7, the air outlet 92 is provided at a position 1.5 to 2 mm away from the floor surface Y so as to face the floor surface Y. Therefore, when the floor surface Y is a carpet, the air outlet is provided. The carpet 92 is reliably blocked by the carpet, and the rotation speed of the turbine 37 can be reliably increased.

[0028]

According to the invention of claim 1, since the communication air passage for communicating the air outlet and the exhaust air passage is provided in parallel with the turbine chamber, the rotational speed of the turbine can be increased. At the same time, the flow velocity of the air blown from the air outlet can be increased.

According to the second aspect of the present invention, since the air outlet is provided at a position separated from the floor surface by a predetermined distance, the turbine rotation speed is increased when the turbine rotation speed is increased and cleaning is desired. The turbine rotation speed can be decreased, and the rotation speed of the turbine can be decreased in the case of a floor plate to be cleaned by decreasing the rotation speed of the turbine.

[Brief description of drawings]

FIG. 1 is a sectional view showing a configuration of an electric vacuum cleaner according to the present invention.

FIG. 2 is a plan sectional view showing a configuration of a suction port body shown in FIG.

FIG. 3 is a cross-sectional view of a suction port body.

FIG. 4 is a vertical cross-sectional view of a suction port body.

FIG. 5 is a conceptual diagram showing a communication air passage.

FIG. 6 is a sectional view showing a suction port body according to another embodiment.

FIG. 7 is a sectional view showing a suction port body according to another embodiment.

FIG. 8 is an explanatory view showing a conventional electric vacuum cleaner.

[Explanation of symbols]

31 Suction port body 34 Suction chamber 36 Turbine room 37 turbine 45 Exhaust air duct 53 Outlet 70 open air duct 80 open air passage

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) A47L 9/08 A47L 9/04

Claims (4)

(57) [Claims] 1. A suction chamber having a suction opening on a bottom surface of a suction port main body, and a rotary cleaning member rotatably provided in the suction chamber.
And a turbine for rotating this rotary cleaning body was installed.
A turbine chamber, a suction air passage communicating with the suction chamber, and
And an exhaust air passage communicating with the turbine chamber, and sucked into the dust collecting chamber air of the suction chamber by communicating the dust collecting chamber of the suction air passage and the cleaner main body, the exhaust
By communicating the air passage with the exhaust chamber of the cleaner body, the air exhausted from the exhaust chamber is caused to flow into the turbine chamber to rotate the turbine, and the air in this turbine chamber is sucked into the suction chamber to circulate the air. Electric vacuum cleaner
Is a suction port used for , and has an outlet that blows out exhaust air that blows up dust on the surface to be cleaned.
Provided, the suction port of the vacuum cleaner, characterized in that a communication air passage communicating the outlet and said exhaust air passage in parallel to the turbine chamber. 2. The suction port body according to claim 1, wherein the air outlet is provided at a position separated from the surface to be cleaned by a predetermined distance. 3. The air outlet is made to face the suction chamber.
The suction port body according to claim 1 or 2. 4. The method according to any one of claims 1 to 3.
An electric vacuum cleaner comprising the above-mentioned suction port body.