JPH05123522A - Air purifier - Google Patents

Abstract

PURPOSE:To provide a compact air purifier efficiently purifying air without bringing about a large increase in cost. CONSTITUTION:A blade part 5c inclined in the same direction as a blade part 5b is formed to the blade part 5a of a fan 5 and a blade 5d inclined in the same direction as the blade part 5a is formed to the outside of the blade part 5b. Air is sucked within the rotary range of the blade parts 5a, 5b and blown off (discharged) within the rotary range of the blade parts 5c, 5d. Therefore, the suction and discharge of air can be performed by one fan 5. Partition walls 9 are provided to the parts corresponding to the middle points being the boundaries of the blade parts 5a, 5c and 5b, 5d of the fan 5. It can be prevented that the air streams due to the suction and discharge of air are short-circuited in the main body A by the partition walls 9.

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 takes in air inside by rotating a fan attached to a motor, purifies the air, adds scent to the air, and then blows it out.

[0002]

2. Description of the Related Art Conventional air cleaners are roughly classified into two types according to their structure. One is as shown in FIG.
For example, a suction unit 2 having fans built in on both sides of the lighting device 21.
2 and the blowout portion 23 are provided separately, and the suction portion 22 and the blowout portion 23 are connected by a duct 24.

As shown in FIG. 4, another type of air cleaner has a suction port 25 and a blow-out port 26 integrated on the front side. A fan 27 is provided inside the main body.
The arrows in the figure show the flow of air.

[0004]

However, although the conventional example of FIG. 3 has an advantage that there is no short circuit of immediately sucking in the blown air, it requires twice the space as compared with the integrated type, and There is a problem that duct work must be done. Further, in the conventional example of FIG. 4, the size is compact, and the construction is easier than that of FIG. However, in many cases, since only one fan 27 is used, static pressure loss tends to increase, and it is difficult for air to flow smoothly.

There is also a method in which fans are attached to the suction port and the air outlet, respectively, in order to allow the air to flow smoothly. However, it is not practical in terms of heavy weight and high cost. The present invention has been made in view of the above points, and provides an air purifier that is compact, does not cause a large increase in cost, and is intended to efficiently perform air cleaning.

[0006]

SUMMARY OF THE INVENTION According to the present invention, the inclination angle between the inner blade portion and the outer blade portion of the fan is set to be mutually demarcated at a boundary between a midpoint of the fan axial direction or an arbitrary point outside the midpoint. A partition wall, which is bent and formed on the opposite side and which defines the flow of air sucking in and the flow of air blowing, is provided corresponding to the midpoint between both blade portions.

[0007]

[Operation] Thus, the blades on the inner side and the outer side of the fan are formed so that their inclination angles are bent to mutually opposite sides, and the air flow between the inner and outer side blades of the fan is increased. Are formed in mutually opposite directions, and air is sucked in and blown out by the rotation of one fan, and a partition wall is provided corresponding to the midpoint between both blade parts to suck in and blow out air. I try to keep the flow short so that it doesn't become a short circuit.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the entire configuration, and the air purifier main body A shows an example of a ceiling installation type. The main body A is attached to the opening of the ceiling plate 1, and in this embodiment, the inside of the main body A is the suction port 2 and the outside is the air outlet 3.

A louver 4 is attached to the lower surface of the main body A, the blades 4a of the louver 4 located at the suction port 2 are arranged right below, and the blades 4b of the louver 4 located at the air outlet 3 are outside. It is arranged so that it does not cause a short circuit. A fan 5 and a motor 6 for performing intake and exhaust are provided immediately above the louver 4. That is, as shown in FIG. 2, the center of the fan 5 is attached to the shaft 7 of the motor 5, and the blade portion 5 inside the fan 5 is bordered by the midpoint 8 in the axial direction of the fan 5.
The inclination angles of a, 5b and the outer blades 5c, 5d are formed by bending the opposite sides. The position of the midpoint 8 may be formed outside the position shown in FIG.

That is, although the blades of a normal propeller fan are only the blade portions 5a and 5b, a blade portion 5c inclined in the same direction as the blade portion 5b is formed outside the blade portion 5a, and the blade portion 5b is also formed. Formed on the outside is a blade portion 5d that is inclined in the same direction as the blade portion 5a. With such a configuration, one fan 5 can perform suction and exhaust such as suction in a range where the blades 5a and 5b rotate and blowout (exhaust) in a range where the blades 5c and 5d rotate. Is.

Further, as shown in FIG. 1, in order to prevent the air flow due to the intake and exhaust from forming a short circuit inside the main body A, a midpoint 8 which is a boundary between the blade portions 5a and 5c,
A partition wall 9 is provided at a portion corresponding to the midpoint 8 which is a boundary between the blade portions 5b and 5d. A filter 10 for cleaning the air is provided in the air passage from the suction port 2 to the air outlet 3.

When the motor 6 is driven to rotate the fan 5, air is sucked in by the blades 5a and 5b.
The more air is sucked in, the air that is sucked in is filtered 10
Is cleaned by. Then, the cleaned air is blown out from the outlet 3 by the blades 5c and 5d. By the way, by using a motor 6 that can rotate in the forward and reverse directions, it is possible to change the air passages of the intake air and the blowout air. For example, when there is a pollution source directly below the main body A, the air passage is formed as shown in FIG. 1 so that the pollution source and the suction port 2 correspond to each other, and the periphery of the main body A (a distant portion)
If there is a pollution source in, use it as an air passage opposite to that in Fig. 1.

[0013]

As described above, according to the present invention, the inclination angle between the inner blade portion and the outer blade portion of the fan is set to be the same with respect to the axial midpoint of the fan or any point outside the midpoint. Since a partition wall that is bent on the opposite side and that divides the flow of air intake and discharge is provided corresponding to the midpoint between both blades, the blades inside and outside the fan And the angle of inclination of the fan are formed to be opposite to each other, the air flow is formed in the opposite direction by the inner blade part and the outer blade part of the fan, and the air is sucked and blown out by the rotation of one fan. In addition, a partition wall can be provided corresponding to the middle point between both blade parts to separate the intake and the discharge flow of air and prevent a short circuit. Therefore, it causes a large cost increase. Not, conventionally as compared to saving construction, it is possible to save space, also with enabling the air cleaning efficiently, in which an effect of the easy maintenance.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a perspective view of a fan.

FIG. 3 is a perspective view of a conventional example.

FIG. 4 is a perspective view of another conventional example.

[Explanation of symbols]

 5 fan 5a blade part 5b blade part 5c blade part 5d blade part 6 motor 8 midpoint 9 partition wall

Front page continuation (72) Koichi Nagatomo 8-21-1, Ginza, Chuo-ku, Tokyo Incorporated Takenaka Corporation Tokyo Main Store (72) Inventor Masahiko Yasui 1048, Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd. In the company

Claims (1)

[Claims] 1. An air purifier that takes in air inside by rotating a fan attached to a motor, purifies the air, and blows the air out to the outside, at a midpoint in the axial direction of the fan or at an arbitrary point outside the midpoint. The inner and outer blades of the fan are bent at opposite angles to each other at the boundary, and the partition wall that divides the flow of air intake and blowout corresponds to the midpoint between both blades. An air purifier that is characterized by being installed.