JP2001239118A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small-sized air cleaner large in air volume and low in noise. SOLUTION: This air cleaner consists of a cleaner body case having a suction port provided to the front thereof and exhaust ports 3 provided to the side surfaces thereof, a filter arranged to an air passage in the cleaner body case to clean sucked air, a sirocco fan 4 arranged in the cleaner body case to suck and discharge air and a plurality of guide walls 5 arranged around the sirocco fan so that its tongue parts 5a and other end parts 5b are connected to the exhaust ports and guiding air discharged with the sirocco fan to the exhaust ports and each of distribution plates 6 is provided in the region between the tongue part and other end part of each of the guide walls on the side of the other end part from the position which is 1/2 the distance between the tongue part and the other end part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier for purifying indoor air or locally generated contaminated air.

[0002]

2. Description of the Related Art FIG. 2 shows a conventional air purifier. In FIG. 2, 1 is a main body case, 2 is an air inlet provided on the front of the main body case 1, and 3 is a main body case 1.
Are a plurality of exhaust ports provided on the side surface 1a of the air conditioner. FIG. 3 is a cross-sectional view of the inside of the main body case 1 from the intake port 2 side in the conventional air cleaner. In FIG. 3, reference numeral 4 denotes a sirocco fan which rotates in the direction of arrow A about an axis 4a. The guide wall 5a is its tongue, and 5b is its other end. Hereinafter, the operation of the air purifier having the above configuration will be described. The air sucked by the sirocco fan 4 rotating in the direction of arrow A enters the main body case 1 through the intake port 2 and is purified by a filter (not shown) arranged in an air passage in the main body case 1. The purified air is pushed out from the inside of the sirocco fan 4 to the outside by the sirocco fan 4, and the flow B of the exhaust
And is pushed out toward the exhaust port 3, and is discharged from the exhaust port 3.

[0003]

However, in the conventional air purifier having a plurality of exhaust ports, as compared with the air purifier having one exhaust port 3 shown in FIG. Becomes very short. For this reason, the distance between the guide wall 5 and the sirocco fan 4 when the exhaust B goes from the tongue 5a to the exhaust port 3 gradually increases in the air purifier having one exhaust port 3. On the other hand, in an air purifier having a plurality of exhaust ports 3, the size increases rapidly. As a result, in the air purifier having one exhaust port 3, the exhaust flow B flows along the guide wall 5 from the tongue 5 a toward the exhaust port 3, and uniformly from the entire exhaust port 3. Is discharged. On the other hand, in an air purifier having a plurality of exhaust ports 3, the length of the guide wall 5 in the direction of arrow A is very short,
Since the distance between the guide wall 5 and the sirocco fan 4 when the air flows from the tongue 5a toward the exhaust port 3 increases rapidly, a uniform flow along the guide wall 5 is not formed. It is discharged only from the tongue 5a side, not from the other end 5b side. As a result, a negative pressure is generated on the other end 5b side of the exhaust port 3 to generate a backflow C, and the exhaust efficiency is extremely reduced, so that the air volume cannot be increased. There is a problem that wind noise is generated in the portion and noise increases. Further, as an example of suppressing noise, a method of adjusting the flow of the exhaust B by erecting a boss near the outer diameter of the sirocco fan 4 has been proposed as disclosed in Japanese Patent Application Laid-Open No. 63-197512. However, although this method can eliminate abnormal sounds and make sounds easy to hear, there is a problem that noise itself cannot be suppressed, and miniaturization because a boss is provided near the outer diameter of the sirocco fan 4. There was a problem that it was not possible. The present invention
In view of the above problems, it is an object of the present invention to provide an air purifier that has a small air volume and a small noise by eliminating exhaust bias at an exhaust port and increasing exhaust efficiency. .

[0004]

According to a first aspect of the present invention, there is provided an air purifier having a main body case having an intake port on a front face and a plurality of exhaust ports on a side face; A filter installed in the air passage in the main body case to purify the sucked air, a sirocco fan installed in the main body case to perform intake and exhaust, and a tongue and other end arranged around the sirocco fan. A plurality of guide walls that are connected to the exhaust port and guide the air exhausted by the sirocco fan to the exhaust port; In a region between the tongue and the other end, a rectifying plate is provided in a region on the other end side of a position which is a half of a distance between the tongue and the other end.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of the inside of a main body case viewed from an intake port side of an air purifier showing an embodiment of the present invention.
2 and 3 denote the same or corresponding members, and a description thereof will be omitted. As shown in FIG. 1, the air purifier of the present invention has a plurality of exhaust ports 3, and each of the exhaust ports 3
Is located at an optimum position for diverting a part of the flow B of the exhaust gas which is discharged to the tongue 5a side toward the other end 5b.
The rectifying plate 6 is provided upright in a region closer to the other end 5b than a half of the distance between the tongue 5a and the other end 5b. In the air purifier configured as described above, the exhaust B pushed out toward the exhaust port 3 by the sirocco fan 4 is pushed out toward the tongue 5a side, but is rectified before the exhaust port 3. A part of the exhaust B is diverted by the plate 6 and the other end 5
A branch stream D toward the b side is generated. As a result, the other end 5b
Backflow due to negative pressure on the side does not occur, and air is uniformly discharged from the entire exhaust port 3.

[0006]

As described above, the present invention has the following effects. Even in an air purifier that has multiple exhaust ports and the distance between the guide wall and the sirocco fan when the exhaust goes from the tongue to the exhaust port, the air flow at the exhaust port is biased. Can be made evenly. As a result, the exhaust efficiency is increased, so that the processing air volume can be increased while being small. In addition, since there is no variation in wind speed due to the unevenness of exhaust gas, it is possible to eliminate wind noise in a portion where the wind speed is high, so that noise can be reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an inside of a main body case viewed from an intake port side according to an embodiment of the present invention.

FIG. 2 is an external view showing a conventional air purifier.

FIG. 3 is a cross-sectional view of the inside of a main body case viewed from an intake port side showing a conventional air purifier having a plurality of exhaust ports.

FIG. 4 is a cross-sectional view of the inside of a main body case viewed from an intake port side showing a conventional air purifier having one exhaust port.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 1a Side surface 2 Intake port 3 Exhaust port 4 Sirocco fan 4a Shaft center 5 Guide wall 5a Tongue 5b Other end 6 Rectifying plate A Rotation direction B Exhaust C Reverse flow D Branch flow

Continuation of the front page (72) Inventor Hidenori Harada 2-3-1-1, Nishinomiya-shi, Yukuhashi-shi, Fukuoka Yasukawa Control Co., Ltd. Inside Yukihashi Plant (72) Inventor Kazunori Masuda 2-3-1-1, Nishinomiya-shi, Yukuhashi-shi, Fukuoka Yasukawa 4D058 JA12 KA25 LA07 LA08 QA11 QA17 QA21 QA27 UA25

Claims (1)

[Claims] 1. A main body case having an intake port on a front side and a plurality of exhaust ports on a side face, a filter installed in an air passage in the main body case to purify sucked air, and A sirocco fan that is installed and performs intake and exhaust,
An air purifier comprising a plurality of guide walls arranged around the sirocco fan, the tongue and the other end of the sirocco fan being connected to the exhaust port to guide air exhausted by the sirocco fan to the exhaust port; In the region between the tongue and the other end of the guide wall, the flow is rectified to a region closer to the other end than a half of the distance between the tongue and the other end. An air purifier characterized by having a plate.