JPH0592118A - Air cleaner - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an air purifier that can secure a passage in the entire filter area and clean the entire filter area without increasing the thickness of the main body to prevent a decrease in air volume. With the goal. [Structure] In a main body composed of a front body 2 and a rear body 3, a filter 10, a filter frame 11 for supporting the outer periphery of the filter, and a main body partition wall 4 having a suction port 8 are provided. 3, a fan 7 driven by a drive motor 6 is provided in the vortex chamber 5 formed between the filter frame 11 and the suction port 8 and the filter 10 is arranged so as to project forward and curved. Inside, the motor 6 and the fan 7 are projected forward until the anti-fixed end 7a of the blade of the fan 7 becomes the same as the surface of the main body partition wall 4, and the other parts are recessed in the opposite direction to form the recess 15 Is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier that sucks in dirty air in a room, purifies it, and circulates it again in the room.

[0002]

2. Description of the Related Art In recent years, air purifiers for purifying contaminated air in a room have become popular in order to improve the indoor environment, and along with this, demands for improving the amount of purified air and reducing noise are increasing.

A conventional air purifier of this type is shown in FIGS.
This will be described with reference to FIG. As shown, a front body 22 having an intake port 21 and a rear body 23 forming a rear portion.
And a main body partition wall 24 provided in an intermediate portion so as to divide the inside of the main body formed by the front body 22 and the rear body 23,
A vortex chamber 25 is formed between the main body partition wall 24 and the main body rear portion 23, and an electric blower including a fan 27 connected to a motor 26 is provided inside the vortex chamber 25, and the vortex chamber 25 communicates with an exhaust port 28. The suction port 29 is provided on the front surface of the main body partition wall 24.
A rib 30 is provided, and the rib 30 supports a filter 31 which is a combination of an activated carbon filter and a charging filter, in which a suction port 29 portion is protruded and curved forward and arranged on the front surface thereof, and the suction port 29 is connected to the motor 26 and the fan 27. It is in communication with the electric blower. Further, a changeover switch section 32 having a control circuit section therein is provided on the upper front surface of the front body 22.

The operation of the above structure will be described. When an electric blower composed of the motor 26 and the fan 27 is rotated by the changeover switch section 32, air is sucked from the intake port 21. The sucked air flow passes through a filter 31 which is a combination of an activated carbon filter and a charging filter and is exhausted to an exhaust port 28 to purify the air.

[0005]

In such a conventional structure, as shown in FIG. 7, a filter 31 which is a combination of an activated carbon filter and a charging filter has a suction port 29.
Since the portion is arranged so as to project and curve forward, the filter 31 and the main body partition wall 2 other than the suction port 29 portion are arranged.
4, there is no gap between the intake port 29 and the passage of the intake air flow, and the effect of cleaning the dirty air flow is not only concentrated on the filter 31 of the intake port 29 but also of the air flow. There was a problem that the intake air volume decreased due to the small number of passages.

The blades of the fan 27 have the non-fixed ends 27a.
A turbulent flow occurs in the intake air flow between or near the main body partition wall 24, and the flow of the air flow is not smoothly performed, and there is a problem that the air volume decreases and the noise value increases due to the turbulent flow. It was

The present invention solves the above-mentioned problems, and secures a passage for the suction air flow to the suction port between the filter and the partition wall of the main body without increasing the thickness of the main body.
A first object of the present invention is to provide an air purifier that cleans the entire area of a filter and prevents a decrease in air volume. Also, the second
The object of (1) is to provide an air purifier which prevents turbulent flow between the anti-fixed end of the fan blades and the main body partition wall to improve the air flow and reduce noise.

[0008]

In order to achieve the above-mentioned first object, the air purifier of the present invention has a first means having a suction port, a main body formed before and after the main body, and the main body. A main body partition wall having a suction port opened therein, a motor and a fan provided in a vortex chamber formed between the main body partition wall and the rear of the main body, and protruding and curved in front of the suction port, inside the filter frame. And a filter provided to form a concave portion that forms an air flow path by providing a step on the main body partition wall surface on the outer periphery from the outer peripheral edge of the fan, and the projection portion to which the anti-fixing end portion of the fan blade corresponds corresponds to the main body partition wall surface. It is configured to project forward until it is flush with.

Further, in order to achieve the second object, the second
This means is provided with a step on the outer peripheral wall surface of the main body within about 5 mm from the outer peripheral edge of the fan.

[0010]

According to the present invention, with the structure of the first means described above, the motor and fan portions are projected forward until the anti-fixed end portion of the fan blades becomes the same as the main body partition wall surface. On the contrary, since the parts other than the motor and fan parts including the suction port part protruding forward in the filter frame are recessed in the rear part, the part other than the suction port part is recessed in this part. By ensuring the passage of the suctioned air flow to the suction port between the filter and the main body partition, the passage can be secured in the entire area of the filter, the entire area of the filter can be cleaned, and the reduction of the air volume can be prevented.

Further, the motor and the fan portion are formed by forming the forward protruding portions and forming the other portions by recessing them in the opposite direction, so that the portions other than the suction port portion can be formed without increasing the thickness of the main body. It is possible to secure the passage of the air flow between the filter of the part and the main body partition wall.

Further, since the step is provided on the main body partition wall surface of the outer periphery within about 5 mm from the outer peripheral end of the fan by the structure of the second means, between the anti-fixed end of the fan blade and the main body partition wall or in the vicinity thereof. It is possible to prevent the turbulent flow of the sucked air flow that occurs in (1) to smoothly flow the air flow, improve the air volume, and reduce the noise generated by the turbulent flow.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. As shown in the figure, a main body 2 having an intake port 1, a main body rear 3 forming a rear part, and a main body provided in an intermediate part so as to divide the inside of the main body formed by the main body front 2 and the main body rear 3 The partition wall 4 constitutes a main body of the air purifier, a vortex chamber 5 is formed between the main body partition wall 4 and the main body rear portion 3, and a fan 7 connected to a motor 6 is provided inside thereof. Then, a suction port 8 and a rib 9 are provided on the front surface of the main body partition wall 4, and the rib 9 has a filter 10 which is a combination of an activated carbon filter and a charging filter, in which the suction port 8 portion is arranged so as to project and curve forward, It is supported together with the filter frame 11 that supports the outer periphery of the filter 10. Further, the suction port 8 communicates with the motor 6 and the fan 7 in the main body, and has an exhaust port 12 sandwiched between the main body partition wall 4 and the main body rear 3, and a control circuit is provided inside the front part of the front part 2 of the main body. The changeover switch unit 13 is provided. Then, the blades of the fan 7 are projected forward in the filter frame 11 of the main body partition wall 4 until the anti-fixed end portions 7a become the same as the surface of the main body partition wall 4, and portions other than the protruding portion 14 are recessed in reverse. To form a recess 15 to form a step. The lateral width of the filter 10 is larger than the outer diameter of the fan 7.

The operation of the above structure will be described. When an electric blower composed of the motor 6 and the fan 7 is rotated by the changeover switch section 13, air is sucked from the intake port 1. The sucked air flow passes through a filter 10 which is a combination of an activated carbon filter and a charging filter, and an exhaust port 12
It is exhausted to and the air is purified.

In the filter frame 11, parts other than the motor 6 and the fan 7 part including the suction port 8 part projecting forward are recessed in the rear part, so that in this recessed part 15 except the suction port 8 part. By ensuring the passage of the suction air flow to the suction port 8 between the filter 10 and the main body partition wall 4 of the part, the passage is secured in the entire area of the filter 10, and the suction air flow is not disturbed to the suction port 8. The cleaning action is performed in the entire area of the flow and the filter 10, and the reduction of the air volume is also prevented.

Further, a concave portion 15 is formed by forming the motor 6 and the fan 7 portion other than the forward projecting portion 14 by concavity, so that the concave portion 15 can be formed without increasing the thickness of the main body. Filter 10 other than the mouth 8
It is possible to secure a passage for the air flow between the main body partition wall 4 and the main body partition wall 4.

By providing a step projectingly formed on the surface of the main body partition wall 4 close to the outer periphery within about 5 mm from the outer peripheral end of the fan 7, the anti-fixed end portion 7a of the blade of the fan 7 and the main body partition wall 4 are provided. A space where turbulence is generated is not provided between or in the vicinity of it, and turbulence of the suctioned air flow is prevented and the air flow is made smooth.
It is possible to improve the air volume and reduce the noise generated by the turbulent flow.

[0018]

As is apparent from the above embodiments, in the air purifier of the present invention, the blades of the fan are made to project forward until the anti-fixed end portion becomes the same as the main body partition surface, and other portions are projected. On the contrary, the parts other than the motor and the fan part including the suction port part that is projected forward in the filter frame are recessed in the rear part. Therefore, at this part, the filter other than the suction port part is filtered. A passage for sucking air flow to the suction port between the main body and the partition wall can be secured, a passage can be secured in the entire area of the filter, cleaning can be performed in the entire area of the filter, and a decrease in air volume can be prevented. Is. Needless to say, the larger the lateral width of the filter is than the outer shape of the fan, the greater the effect.

Further, there is an effect that an air flow passage can be secured between the filter other than the suction port and the main body partition without increasing the thickness of the main body.

Further, by providing a step on the outer surface of the main body partition wall within about 5 mm from the outer peripheral end of the fan, the turbulent flow of the suctioned air flow occurring between the anti-fixed end of the fan blade and the main body partition wall or in the vicinity thereof. It is possible to provide an air purifier having the effects of preventing the above and smoothly performing the flow of the air flow, improving the air volume, and reducing the noise generated by the turbulent flow.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an air cleaner according to an embodiment of the present invention.

FIG. 2 is a perspective view of the main body with the front removed.

FIG. 3 is an external perspective view of the air purifier.

FIG. 4 is a vertical sectional view of the air purifier.

FIG. 5 is an external perspective view of a conventional air purifier.

FIG. 6 is a vertical sectional view of the air purifier.

FIG. 7 is a cross-sectional view of the air purifier.

[Explanation of symbols]

 2 Front of main body 3 Rear of main body 4 Main body partition wall 5 Vortex chamber 6 Motor 7 Fan 7a Blade anti-fixed end 8 Suction port 10 Filter 11 Filter frame 14 Projection 15 Recess

Claims (2)

[Claims] 1. A body formed before and after a body having an intake port, a body partition wall having a suction port opened therein, and a vortex formed between the body partition wall and the rear body. A motor and a fan provided in a room, and a filter provided in a filter frame and curved in a forward direction of the suction port are provided, and a step is provided on a main body partition surface on an outer periphery from an outer peripheral end of the fan to form an air flow path. An air purifier in which a concave portion is formed, and a corresponding protruding portion of the fan blade opposite to the fixed end portion is protruded forward until it is flush with the main body partition surface. 2. The air purifier according to claim 1, wherein a step is provided on the outer surface of the partition wall of the main body within about 5 mm from the outer peripheral end of the fan.