JPH02229517A - Air cleaner - Google Patents

Abstract

PURPOSE:To improve the cleaning capacity by providing long blades elongated to the inner side than suction openings and plural short blades which are smaller both in length and width than the long blades between the long blades in a impeller. CONSTITUTION:When an operating part 21 is put in the operation state, an electric motor is driven to revolve the impeller 18. By this revolution, polluted air is flowed in through a suction grille 12 of a main body 11 with fine dust removed by a dust collecting filter 14, and is made into a clean air, which is passed through the suction openings 16, flowed into the impeller 18, sent in the outer peripheral direction, and discharged through a discharge grille 13. The air is made in a turbulent air flow when passed through the dust collecting filter 14, and eddy flows are generated in the suction opening 16, but the long blades 19 efficiently catch the eddy flows owing to the long blade. Thus, the air flow is efficiently introduced into the impeller 18, and the cleaning capacity is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an air cleaner having an impeller.

BACKGROUND ART Conventionally, this type of air cleaner has been constructed as shown in FIGS. 4 and 6. A dust collecting finolet 1 is disposed on the intake side, and an impeller 3 rotationally driven by an electric motor 2 is disposed behind it. This impeller 3 is formed on the outer circumferential side of the substantially circular air intake port 5 in which the blades 4 have the same length and width.

When the electric motor 2 is put into operation, the impeller 3 rotates, and the intake grid 7, which is attached to the front of the main body 6 of the air purifier,
Air flows through the main body 6 in this order through the dust collecting fino leter 1, the impeller 3, and the exhaust grate 8 attached to the upper surface of the main body 6, and the dirty air is purified by the dust collecting fino leter 1.

Problems to be Solved by the Invention However, in the above configuration, the dirty air flow that has flowed into the main body e is purified by passing through the dust collecting fino leter 1, but at the same time it becomes a turbulent air flow.

Therefore, a thin air flow is generated within the intake port 6, and the air flow does not enter the impeller 3 efficiently. Moreover, the flow flowing into the impeller 3 becomes a coarse and turbulent flow between the blades 4, with the flow on the lower side being denser and the flow on the upper side being coarse and biased, with respect to the rotation direction of the impeller 3. airflow between the blades is not efficient. Therefore, these reduce the suction air volume of the impeller 3.

The present invention solves the above-mentioned problems and aims to provide a high-performance air cleaner that increases the amount of air taken in and has a high cleaning ability.

Means for Solving the Problems The technical means of the present invention to achieve the above object is to provide a plurality of long blades extending inward from the intake port, and a blade having a length and width greater than that of the long blades between the long blades. The impeller has a plurality of small short blades.

action The effects of the above means are as follows.

By using a long blade extending toward the inner periphery of the intake port and a short blade having a smaller blade length and width than the long blades between the long blades in the impeller disposed behind the intake port of the support plate, The long blades efficiently capture the thin flow generated by the turbulence of the flow inside the intake port and allow it to flow between the blades.

In addition, the short blades rectify the turbulent flow seen in the past where the blades are unevenly spaced and create a uniform flow, and the resistance due to the short blades is minimized. Therefore, these methods allow air to efficiently flow into the impeller and flow uniformly between the blades, thereby increasing the intake air volume.

Example Embodiments of the present invention will be described below with reference to the drawings.

1 to 3, an air purifier main body 11 has an intake grid 12 on the front surface and an exhaust grid 13 on the top surface, and inside there is a dust collection filter 14 on the intake side and an electric motor behind it. There is a support plate 17 having a substantially circular air inlet 16 holding the air inlet 16, and an impeller 18 rotatably driven by the electric motor 15 behind the air inlet 16. This impeller 18 has a plurality of long blades 19 extending inward from the intake port 16 (part of which extends into the intake port 16),
A plurality of short blades 20 are provided on the outer circumferential side between the long blades 19, and the length and width of the blades are smaller than those of the long blades 19. Note that the main body 11 has an operating section 21 on the upper surface thereof that drives the electric motor 15.

When the operating section 21 is put into operation, the electric motor 16 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, and the dust collection fino leter
14 removes fine dust and the like, resulting in clean air that passes through the intake port 16, flows into the impeller 18, is discharged toward its outer circumference, and exits through the exhaust grid 13.

The airflow becomes turbulent in the process of passing through the dust collection finoletter 14 and generates a thin flow within the intake port 16, but the long blade 19 efficiently captures the thin flow with its long blades. Therefore, airflow efficiently enters the impeller 18.

In addition, by using the short blade 2o between the long blades 19, the coarse and dense flow with unevenness between the blades, which was seen in the past, is rectified and made uniform, and by considering the width and length of the short blades. The flow path reduction due to the presence of short blades is minimized. Therefore, the airflow efficiently flows between the blades, and the suction air volume can be increased.

In addition, with the impeller 18 of the same size, the suction air volume can be increased by using longer and shorter blades than a conventional impeller, so if it is sufficient to obtain the same suction air volume as a conventional impeller, the impeller 18 It is possible to reduce the outer diameter or the width of the impeller 18.

Alternatively, the number of revolutions of the impeller 18 can be reduced, and noise can also be reduced.

Effects of the Invention As explained above, by using an impeller having a plurality of long blades extending inward from the intake port and a plurality of short blades having a shorter blade length and width than the long blades between the long blades, It is possible to provide a high-performance air cleaner that can increase the suction air volume and, in turn, improve the cleaning ability.

Furthermore, because of the improved efficiency, the air cleaner can be made smaller, thinner, and less noisy than conventional air cleaners when obtaining the same amount of air.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view of an air purifier according to an embodiment of the present invention, Fig. 2 is a sectional view thereof, Fig. 3 is a front view of the impeller, and Fig. 4 is a conventional air purifier. Cross-sectional view of the purifier,
FIG. 5 is also a front view of the impeller. 11...Body, 14...Dust filter, 16...Electric motor, 16...Intake port, 17...Support plate, 18 ...impeller,
19...Long blade, 2o...Short blade. Name of agent: Patent attorney Shigetaka Awano and 1 other person 1st
Figure l4 one medicine ▲ fi 2 legu / 5 - [moving spine one l6 one intake port l7... support plate //3- one rake lq one length grade 2θ one short. Blade l6/! /4 Figure 2 l9 "゜Ichihi Blade 201 Heron Blade Figure 3 l9 Figure Figure a

Claims (1)

[Claims] It is equipped with a dust collection filter arranged on the intake side, a support plate arranged behind the integrated filter and having an intake port, and an impeller located behind the intake port of the support plate and rotated by an electric motor. However, this impeller is an air purifier that has long blades that extend inward from the intake port, and a plurality of short blades that are formed between the long blades and have shorter blade length and width than the long blades.