JP2760454B2 - Electric vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner provided with a silencer for reducing exhaust noise by blowing exhaust air .

[0002]

2. Description of the Related Art An electric vacuum cleaner has a dust collecting chamber communicating with a suction port inside a cleaner body, a built-in electric blower communicating with the dust collecting chamber, and a communication with an exhaust side of the electric blower. Exhaust port is provided.

By the way, in order to reduce exhaust noise such as wind noise and noise from an electric blower, an electric cleaning device provided with a silencing structure for extinguishing exhaust air to a silencer provided in an exhaust path leading to an exhaust port. There is a machine.

As shown in FIG. 4, the silencing structure of this vacuum cleaner has an exhaust case 1 mounted on the rear surface of the cleaner body, a filter 2 provided inside the exhaust case 1, and a silencer provided outside. A body 3 is provided, and exhaust ports 4 are provided at upper and lower portions of the silencer 3. Et al of silencer body 3 has a sound-deadening material 6 provided inside the silencer casing 5.

[0005] The exhaust air from the electric blower passes through the filter 2 hits the silencing member 6 of the muffling body 3, Ru is exhausted from the exhaust port 4 by changing the direction of flow.

[0006]

As described above, the provision of the silencer 3 in the exhaust portion has the effect of silencing the exhaust noise from the electric blower. The opening area is limited and reduced, and the speed of the exhaust air exhausted from the exhaust port 4 increases.

[0007] For this reason, in particular, it is located below the silencer 3 .
The strong exhaust air from the exhaust port 4 is directed downward in the direction of the air blown to the floor, and so blows up dust on the floor.

Therefore, the present invention has been made in view of the above problems.
It is an object of the present invention to prevent dust from rising in a vacuum cleaner provided with a muffler for reducing exhaust noise.

[0009]

The vacuum cleaner of the present invention comprises:
A dust collecting chamber communicating with the suction port is provided inside the cleaner body, an electric blower communicating with the dust collecting chamber is built in, and a rear outer surface of the cleaner main body communicates with an exhaust side of the electric blower. In a vacuum cleaner provided with an exhaust port and a muffler that applies exhaust air to the same surface as the exhaust port at the rear of the cleaner body in an exhaust path leading to the exhaust port,
At least the exhaust port located below the muffler is provided with a guide portion for guiding the exhaust air upward.

[0010]

According to the vacuum cleaner of the present invention , by operating the electric blower, the dust is sucked together with the air from the suction port into the dust collection chamber and caught, and the air discharged from the exhaust side of the electric blower is applied to the muffler to mute the sound. immediately exhausted to the outside part of the exhaust outlet and from. At this time, an exhaust port is provided on the rear surface of the cleaner body.
Exhaust to the user etc.
Prevents the wind from blowing and causing discomfort
As well as exhaust air on the floor surface
The dust can be prevented from flying up.
Also, since the silencer is provided on the same surface as the exhaust port,
The exhaust air is quickly exhausted from the exhaust port after being silenced by the silencer.
After the exhaust wind is silenced by the silencer, the wind noise
It is exhausted immediately without any occurrence. And the silencer
The exhaust air is guided upward and is blown out by a guide portion provided at an exhaust port located below .

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

[0012] In FIG. 1, 11 indicates a vacuum cleaner the body, the cleaner main body 11, upper case 12, lower case 13, the lid 14 is openable and closable on the upper surface of the upper casing 12, and, a cleaner body 11 is exhaust case 16 or et al is fitted into the opening 15 of the surface structure after a outer surface of, has become capable of running on a floor surface by both sides of the wheel 17 and the lower surface of the key <br/> catcher is te 18 You.

Inside the cleaner body 11, a dust collecting chamber 19 is provided at the front, an electric blower chamber 20 is provided at the rear, and an exhaust chamber 21 is provided at the rear. Further, the dust collecting chamber 19 communicates with a suction opening which is opened on the front upper surface of the cleaner main body 11 and to which a hose is connected. The exhaust chamber 21 is accommodated and communicates with the exhaust side of the electric blower 22.

On the other hand, as shown in FIGS. 2 and 3 , the exhaust case 16 has an outer frame portion 31 fitted into the opening 15 of the cleaner body 11, and upper and lower edges of the outer frame portion 31. Formed with fitting step portions 32 and 33 to be fitted into the inner edge portion of the opening portion 15.

[0015] Then, the concave portion 34 of the outer surface concave is formed in the central region of the outer frame portion 31, a plurality of vent holes 35 is formed in the recess 34. In addition, a boss 36 for screwing and a boss 37 for support are projected from almost the center of the outer surface of the recess 34, and a rib 38 is provided between the bosses 36 and 37.
Further, bosses 39 for screwing are provided on both sides of the concave portion 34 so as to protrude therefrom. Furthermore, the bottom of the recess 34, fitting grooves 40 which opens outward is formed.

Further, filter frame portion 41 as the inner surface of the outer frame portion 31 surrounding the vent hole 35 is formed to protrude, the fill
Filter 42 is attached to the data frame portion 41. Note that Fi <br/> Le data frame portion 41, protruding portions 41a protruding downward of the outer frame portion 31
It is that provided.

Furthermore, the recess 34 of the exhaust casing 16, the muffler body 51 is mounted. The silencer body 51 is configured a silencer cover 52 to be fitted inside the recess 34, the silencing material 53 having a silencing effect such as urethane attached to the inner surface of the muffler cover 52 to face the vents 35 Have been.

[0018] and, on the inner surface of the silencer cover 52, Bo scan 3
Mounting boss 5 that fits with 6 and 39 and is fixed with screws 54
5 together are projected, the projecting pieces 56 to be fitted in the fitting groove 40 is projected. Moreover, the silencer cover 52, along the upper and lower portions of the upper and lower portions to snare Chi through outlet port 35 of the silencer material 53,
Horizontal exhaust ports 57a and 57b are formed. Note that the upper exhaust opening 57a is formed between the recess 34 of the exhaust casing 16. Therefore, the exhaust port 57a, the 57b and the silencer body 51, are formed on the same surface of the rear surface of the cleaner body 11.

A silencing space 58 is formed between the inner surface of the silencer 51 and the recess 34 to constitute a part of an exhaust path leading to the exhaust ports 57a and 57b.

Further, at the lower edge of the lower exhaust port 57b,
A guide portion 59 for guiding the exhaust air upward is formed to protrude above the inner bottom surface of the muffling cover 52.

A projection 61 is provided on the outer surface of the muffling cover 52 for supporting the cleaner body 11 in an upright position with an auxiliary wheel 60 projecting from the rear surface of the lower case 13.

Next, the operation of this embodiment will be described.

The operation of the electric blower 22 causes the cleaner body 11 to operate.
Dust is sucked together with air from a hose ( not shown) connected to the suction port of the hose or a suction port body at the end of the hose, and the dust is caught in the dust collection chamber 19, and the air is blown by the electric blower 22, the electric blower chamber 20, and the exhaust chamber 21. Through the exhaust ports 57a and 57b.

The exhaust air flowing into the exhaust chamber 21 is shown in FIG.
As shown in 2, balloon into silencing space 58 from the vent hole 35 through the filter 42, impinges on muffling material 53, which is opposed to the vent hole 35, instead flows into an upper and a lower, outlet 57a, 57 b
From the vacuum cleaner main body 11 . As described above, the amplitude of the sound is attenuated by the exhaust wind colliding with the sound deadening material 53, and the exhaust sound is reduced.

The exhaust air is blown upward from the upper exhaust port 57a along the upward flow. Also,
The exhaust wind whose flow has changed with the sound deadening space 58 facing downward
As shown in 2, the flow further directed upward by the guide by the guide portion 59 projecting from the outlet 57b to-bottom edge of the lower
It is blown upwards instead .

Therefore, the exhaust air blown out from the exhaust ports 57a and 57b is not blown to the floor, so that the dust on the floor can be prevented from rising.

Here, the exhaust ports 57a and 57b are connected to the cleaner main body 1.
Is provided on the rear surface, so if it is provided on the top surface, it will be
Prevents exhaust wind from causing discomfort
Can be stopped, and exhaust is provided on the floor
Prevents the wind from blowing dust and soaring
You. Also, the silencer 51 is provided on the same surface as the exhaust ports 57a and 57b.
The exhaust air is quickly silenced by the silencer 3
Exhaust air is exhausted from the exhaust ports 57a and 57b, so the exhaust air is muted.
Immediately after the sound is muted by body 51 without wind noise
Can be exhausted.

[0028] Even if the exhaust port 57a on the upper side is positioned than muffling member 51, a small outlet of this opening area 57
Since the exhaust air intensively discharged from a spreads, the same effect can be obtained by providing the above-described guide portion 59 .

The guide portion 59 may be integrated with or separate from the members constituting the exhaust ports 57a and 57b . If the design is difficult to integrate, the guide portion 59 is provided separately. When the guide portion 59 is integrated, the exhaust ports 57a and 57b may be directed upward to guide the exhaust air upward.

[0030]

According to the vacuum cleaner of the present invention, the vacuum cleaner
It is located on the same plane as the muffler below the muffler provided at the back of the body.
Since the exhaust port to be installed is provided with a guide portion for guiding the exhaust air upward, the exhaust air blown from the exhaust port immediately without hitting the silencer and generating a wind noise is not blown to the floor surface, and kill rise up above the dust prevention.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of the vacuum cleaner of the present invention.

2 is a cross-sectional view of the same exhaust housing part.

FIG. 3 is a rear view of the same exhaust case.

FIG. 4 is a cross-sectional view of an exhaust case portion of a conventional vacuum cleaner.

[Explanation of symbols]

 11 Vacuum cleaner body 19 Dust chamber 22 Electric blower 51 Silencer 57b Exhaust vent 59 Guide

Claims (1)

(57) [Claims] 1. A built-in electric blower communicating with the dust collecting chamber provided with a dust collecting chamber which communicates with the inlet to the interior of the vacuum cleaner main body, and the electric blower to the rear outer face of the cleaner body A vacuum cleaner provided with an exhaust port communicating with an exhaust side and a muffler for applying exhaust air to the same surface as the exhaust port at the rear of the cleaner body in an exhaust path leading to the exhaust port ; A vacuum cleaner, wherein a guide portion for guiding the exhaust air upward is provided at the exhaust port located below .