JPH0252019A - air purifier - 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 Field of the Invention The present invention relates to an air cleaner having an impeller.

2. Description of the Related Art Conventionally, this type of air purifier has been constructed as shown in FIGS. 4 and 5. A dust collection filter 1 is arranged on the intake side, and an impeller 3 rotationally driven by an electric motor 2 is behind it.
is installed. This impeller 3 is formed on the outer circumferential side of the substantially circular suction port 5 in which all the blades 4 have the same length.

When the electric motor 2 is placed in the operating state (■), the impeller 3 rotates, and the X suction grating 7 attached to the front of the air purifier body 6 is rotated. Air flows through the main body in the order of a dust collecting filter 11, an impeller 30, and an exhaust grid 8 attached to the upper surface of the main body 6, and the dirty air is purified by the dust collecting filter 1.

Problems to be Solved by the Invention However, at the groove bottom, the dirty air flowing into the main body 6 is purified by passing through the dust collection filter 1, but at the same time, it becomes a turbulent air flow and the air flows into the air intake port. 6 and flows into the impeller 3.

Therefore, a thin air flow is generated on the inner circumference side of the impeller 3, and the air flow does not efficiently pass between the blades 4 and be discharged to the outer circumference side of the impeller 3. As a result, the suction landscape deteriorated.

The present invention is intended to solve the above-mentioned problems, and aims to provide a high-performance air cleaner that increases the suction air volume and, in turn, improves the cleaning ability.

Means for Solving the Problems The technical means of the present invention to achieve the above object is to provide suction A (a plurality of short blades formed on the outer circumference side from the mouth and a plurality of long blades extended on the inner circumference side). This uses an impeller with

For production The effect of the above means is as follows.

The turbulent air that has passed through the dust collection filter is removed by using short blades located on the outer circumferential side of the inlet C port and long blades extending toward the inner circumferential side of the impeller placed behind the inlet port of the support plate. When air flows into the impeller, the long blades suppress the generation of thin air on the inner circumference of the impeller, and the long blades and short blades efficiently discharge the air toward the outer circumference of the impeller, increasing the intake air volume. It is something that increases.

Example Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In Figures 1, 2, and 3, the main body 1 of the air purifier
1, an intake grid 12 is formed on the front surface, an exhaust grid 13 is formed on the top surface, and inside there is a dust collection filter 1 disposed on the intake side.
4, and it is disposed in the direction In and holds electric power 15.
Support plate 1 having a substantially circular air intake port 16 around the electric motor
7, and an impeller 1 rotated by an electric motor 15 is located behind the intake port 16. The impeller 18 has a plurality of short blades 19 formed on the outer circumferential side of the inlet port 16 and a plurality of long blades 20 that extend inward from the inlet port 16 . Note that there is a t on the top surface of the main body 11.
/'i The operating section 21 that turns on the electric power unit 15 is also turned on.

Next, the operation in the above configuration will be explained.

When the operating state IK is set by operating the operating section 21, the electric motor n15 is driven and the impeller 18 is rotated. Along with this rotation, dirty air flows in from the intake grid 12 of the main body 11, fine dust etc. are removed by the dust collecting filter 14, and becomes clean air, which passes through the intake port 16 and flows into the impeller 18. It is discharged toward the outer circumference and exits through the exhaust grate 13.

In this process, the airflow that is turbulent by passing through the dust collection filter 14 flows into the inner circumferential side of the impeller 18. In order to suppress the generation of a thin flow on the side and efficiently discharge the air toward the outer circumference of the impeller 18 using the long blades 2o and the short plate '19, the amount of suction air increases.

This increase in suction air volume, in other words, the effect of the long blade 2o catching the turbulent air flow is approximately a 10% increase in air volume under the same experimental conditions compared to the case where the long blade 2o captures the turbulent air flow. was confirmed by the 'p test results.

In addition, when all the blades are formed of long blades 20, the inlet width at the inner peripheral end of the long blades 20 becomes narrower, the inlet area becomes smaller, and it is difficult to catch the airflow, which increases the air volume. Experimental results have confirmed that this is not the case.

In addition, as mentioned above, since the same size impeller 18 can increase the suction air volume compared to the conventional impeller, if it is sufficient to obtain the same suction air volume as the conventional impeller, the impeller 18 The outer diameter of the wheel 18 can be made smaller, the thickness of the impeller 18 can be made thinner, or the number of rotations of the impeller 18 can be reduced, making it possible to make the main body 11 smaller or thinner, or to achieve quieter operation. .

As explained above, the intake air volume can be increased by using an impeller that has a plurality of short blades whose outer periphery is II from the intake port and a plurality of long blades whose outer periphery is extended to the inner periphery. Furthermore, it is possible to provide a high-performance air purifier with improved cleaning ability.

Furthermore, due to the improved efficiency, air purifiers are smaller than conventional ones when obtaining the same air volume.

It can be made thinner and quieter, which has great effects.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an air purifier according to an embodiment of the present invention, Fig. 2 is a sectional view thereof, and Fig. 3 is a front view of the impeller.
Figure 4 is a cross-sectional view of a conventional air purifier, and Figure 5 is the same.
FIG. 3 is a front view of a conventional impeller. 11...--Main body, 14...--Dust filter 154. ...Electric motor, 16...Intake port, 1
7... Support plate, 18... Impeller, 19...
...Short blade, 20...Long blade. Name of agent: Patent attorney Shigetaka Awano and 1 other person 2nd
Figure 3/l-Main body/2-Intake sign 73-mP input sweet chi 14--Collection A1 Fining-15--One electric attack/shihan/6-1'l and air port 17-Support plate /8 ゛-wing ↑ and car 19- short rate /8

Claims (1)

[Claims] A dust collection filter placed on the intake side, a support plate placed behind the dust collection filter and having a substantially circular intake port centered around an electric motor, and an impeller located behind this support plate and rotated by the electric motor. An air purifier, the impeller having a plurality of short blades formed on the outer circumference side from the intake port and a plurality of long blades extending on the inner circumference side from the intake port.