JPS62292127A - Suction tool of electric cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention Industrial Application Field The present invention relates to a suction device that is connected to a vacuum cleaner or the like through a hose and sucks out dust using the suction force of the vacuum cleaner. It's about the ingredients.

2. Description of the Related Art The surroundings of a turbine wheel in a conventional suction device of this type have a structure as shown in FIGS. 4 and 6.

That is, the turbine wheel 1 is located in the turbine chamber 2,
Air is sucked through the suction port 3 provided on the front wall of the turbine chamber 2 by the low pressure generated in the vacuum cleaner body, and air flows out to the air outlet 4 provided on the rear wall of the turbine chamber 2. The air rotated the turbine wheel 1 to obtain torque. As a result, the rotating brush 7 connected to the turbine wheel 1 via the belt 12 is rotated to scrape up the dust on the floor through the opening 6a facing the floor, suction it together with the air flow mentioned above, and send it to the vacuum cleaner body. They were supposed to collect it.

Problems to be Solved by the Invention Generally, the outer diameter of each blade 1a of the turbine wheel 1 in the above configuration is a single and the same diameter, as is clear from the figure, and the distance between this outer diameter and the turbine chamber 2 is is generally constant and narrow.

For this reason, when dust gets entangled in turbine wheel 1, there is no place for it to escape, and the force that moves the dust does not work, and the dust remains entangled in turbine wheel 3 forever, resulting in a decrease in turbine efficiency or a stoppage due to locking of the rotation of the turbine wheel. It had the potential to happen.

The present invention solves the problems of the conventional technology, and aims to improve the efficiency of the turbine wheel and prevent locking.

Means for Solving the Problems Technical means according to the present invention for solving the above problems are as follows. In other words, the outer diameter of the blades in a turbine vehicle is maximum at the position facing the air inlet, and the outer diameter gradually decreases toward the side plates. The distance is minimum near the air inlet and maximum near the side plate.

action The effect of this technical means is as follows.

In other words, since the outer diameter of the turbine blade is large near the air inlet, the force received from the airflow is the same as in conventional turbine blades, and when dust gets entangled with the turbine blade, the dust tilts toward the side plate. The turbine blade is pushed over the end face of the turbine blade by the airflow and moves into the space formed by the difference between the outer diameter of the turbine blade and the inside diameter of the turbine near the side plate being larger than near the air inlet. It is pushed out and separated from the turbine.

Embodiment Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings.

In FIG. 2, reference numeral 6 denotes a suction tool body, inside which is a rotating brush 7, a turbine chamber 8, and a turbine wheel 9' inside the turbine chamber.
ff: The belt 1 is provided with a gear mechanism 11 in which the turbine wheel 9 and the rotating brush 7 are provided at the end of the rotating shaft 10.
It is tied by 2. 13 is an air inlet provided on the front wall of the turbine chamber 8, and 14 is a suction port provided in the turbine chamber 8 on the substantially opposite side of the air inlet 13. Reference numeral 16 denotes a pipe into which a hose of a vacuum cleaner body (not shown) is inserted, which serves as a source of dust collection and suction force generation. 16. A detailed view of the turbine wheel 9 is shown in FIG. 16 and 17 are side plates. The outer diameter of the turbine blade 18 is at its maximum at a location facing the air inlet 13, and the end face thereof gradually becomes smaller from there toward the side plates 16, 17. Therefore, the distance between the inner wall of the turbine chamber 8 and the outer diameter of the turbine blade 18 is at least 11 in the vicinity of the air inlet 13, increases toward the side plates in other areas, and reaches a maximum of 12 in the vicinity of the side plates 16 and 17. ing.

Next, the operation of the configuration of the embodiment will be explained. The suction force of the vacuum cleaner body creates a negative pressure on the pipe 16 side of the suction tool 6, which causes air to flow into the turbine chamber 8 through the air inlet 13, and this air flow rotates the turbine wheel 9, thereby increasing torque. The torque is increased by the deceleration of the gear mechanism 11, which rotates the rotary brush 7 via the belt 12 and acts to scrape up the dust on the floor. Since the outer diameter of the turbine blades 18 is at its maximum near the air inlet 13, the force exerted on the turbine wheel 9 by the air flowing in from the air inlet 13 can be made to be about the same as in the conventional case. can. Furthermore, when dust gets entangled in the turbine blade 18, the dust is pushed by the airflow and is pushed from the center of the turbine blade 18 toward the side plate 16 or 17 along the inclination in the left-right direction. . Since the difference between the inner wall of the turbine chamber 8 and the outer diameter of the turbine blade 18 near the side plate 16° 1T is larger than that at the center, dust is sucked into the cleaner body through this gap.

Effects of the Invention As described above, the present invention makes the outer diameter of the turbine blade in a turbine vehicle maximum near the air inflow date and gradually decreases toward the side plates, and also increases the distance between the turbine indoor wall and the turbine blade outer diameter. Since the distance is minimized near the air inflow day and maximized near the side plate, the following effects can be obtained.

In other words, the rotational torque of the turbine wheel does not decrease near the air inlet where the airflow collides with the turbine blades because the outer diameter of the turbine blades is at its maximum. It moves toward the side plate along the outer diameter of the turbine blade, and is separated near the side plate into a space defined by the maximum distance between the outer diameter of the turbine blade and the inner wall of the turbine, through which it is discharged. This makes it possible to obtain a suction tool that is less likely to reduce the efficiency of the turbine wheel or lock the turbine wheel due to entanglement with dust.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a turbine wheel in one embodiment of the suction device according to the present invention, FIG. 2 is a longitudinal sectional view of the same embodiment, and FIG.
The figure is a front view of the turbine wheel seen from the air inlet of the same embodiment, FIG. 4 is a longitudinal sectional view of a conventional suction tool, and FIG. 5 is a front view of the turbine wheel seen from the air inlet of the conventional example. It is a front view. 6... Suction tool body, 7... Rotating brush, 8... Turbine chamber, 9... Turbine wheel,
13... Air inlet, 16.17...
Side plate, 18...Turbine blade.

Claims (1)

[Claims] A suction device main body having an air inflow port, a turbine wheel provided in a turbine chamber of the suction device main body and rotated by intake air, and a rotating brush rotated by the turbine wheel, and the outer diameter of the turbine blade in the turbine wheel is , the distance between the outer diameter of the turbine blade and the turbine indoor wall is the minimum in the vicinity of the air inlet,
A vacuum cleaner suction device configured to reach its maximum near both side panels.