JPH09201507A - Air cleaning apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an economical air cleaning apparatus having a high air sucking function and a high dust collecting effect. SOLUTION: An air cleaning apparatus 1 comprises a main body 2 and a dust collecting filter 5 is attached to an aperture part 2a. Casings 6, 7 are connected with a cylindrical cylinder part 8 and a gas discharging duct and gas discharging outlets 10a, 10b of the gas discharging duct are opened in an outer plate 15. An end plate to which a baffle plate 16 is attached is fixed in the casing 7 and a second suction inlet 12 is formed in the center. Multiblade fans 3, 4 are respectively fixed in both end parts of a rotary axis 17. Outside air is sucked through the pair of the multiblade fans 3, 4, led to the gas discharging duct through a first and the second suction inlets 11, 12, and discharged to an interior through the gas discharging outlets 10a, 10b. Air intake quantity can be multiplied and the utilization factor of the filter and the dust collecting effect are improved.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an air cleaning device. More specifically, the second fan is arranged on the rear side of the first fan, and the first and second fans are provided on the same rotation shaft of the motor, respectively, so that the suction force obtained by rotating them at substantially the same time can be obtained. The present invention relates to an air purifying device capable of increasing the intake amount of air.

[0002]

2. Description of the Related Art Conventionally, a small air cleaning device has been used to clean dirty air in a room. The air purifier uses a sirocco fan, etc. that forcibly sucks in the outside air, and the air from the outside is cleaned by removing dust and odors when passing through the dust collection filter attached to the air purifier. The generated air is exhausted indoors from the exhaust port.

[0003]

The above-mentioned conventional air cleaning device can promote the cleaning of air by using a high-performance filter having a fine texture and a large dust collecting effect such as a thickness. When a performance filter is used, the pressure loss increases and the amount of air intake decreases, so it becomes impossible to efficiently inhale a large amount of air.

Further, since the sirocco fan is arranged substantially in the center of the dust collecting filter, the air sucked from the outside is concentrated inside the dust collecting filter. Therefore, it becomes difficult for air to be sucked in from the portion located outside the dust collecting filter, and the dirt on the dust collecting filter deviates to the center, so that the dust collecting filter cannot be effectively used.

In order to solve such a problem, for example, a sirocco fan having a relatively large radius of rotation is used, or the output of a motor for driving the sirocco fan is increased to increase the rotation speed of the sirocco fan to suck air. It is possible to increase the volume (air volume).

However, an AC motor is usually used as the motor, and an inverter device or the like for varying the frequency is required to increase the rotation speed of the motor in order to increase the air volume. Further, if a sirocco fan having a large turning radius is used, the size of the device becomes large, and in any case, there is a problem that the manufacturing cost increases.

Therefore, the present invention has solved the above-mentioned problems and the like, and proposes an air purifying apparatus which is small in size and inexpensive while improving the air suction performance and the dust collection efficiency.

[0008]

In order to solve the above-mentioned problems, in the present invention, in an air cleaning device for cleaning the intake air and exhausting it, a motor for rotating a first fan and a first fan are used. A first exhaust port for exhausting the air sucked from the first intake port, a second fan arranged on the rear side of the first fan, and a second fan sucking air from the second intake port. A second exhaust port for exhausting the air and a dust collecting filter for cleaning the air sucked by the first and second fans, and the first fan and the second fan
The respective fans are provided on the same rotary shaft of the motor, respectively.

When the first fan and the second fan are rotationally driven by the motor, the outside air is cleaned by the dust collecting filter and is exhausted from the first and second suction ports through the exhaust duct to the room through the exhaust port. It The air passing through the central portion of the dust collecting filter is guided to the first suction port and discharged, and the air passing outside the dust collecting filter is guided to the second suction port by the air guide plate and discharged. As a result, a large amount of air can be sucked in by utilizing the entire surface of the dust collecting filter without air suction being concentrated in the central portion of the dust collecting filter. Therefore, a high performance filter can be used and the dust collection effect is improved.

[0010]

Next, an embodiment of an air purifying apparatus according to the present invention will be described in detail with reference to the drawings.

FIG. 1 shows the structure of an air cleaning apparatus 1 according to an embodiment of the present invention. The air purifying apparatus 1 of the same figure is composed of a main body 2 which is in the shape of a rectangular box as a whole, and an opening 2a for taking in outside air is provided on the front side (left side in the figure) of the main body 2. A dust collection filter 5 made of activated carbon for deodorization, chemical fiber for dust collection, or the like is attached to the opening 2a.

External air is forcibly sucked into the air cleaning device 1 by sirocco fans 3 and 4 which are first and second fans described later, and dust and odors are removed when passing through the dust collecting filter 5. Be cleaned.

As shown in FIG. 1, the main body 2 of the air cleaning device 1
Inside, shell-shaped casings 6 and 7 are independently mounted and fixed in a state of being arranged in front and back (left and right in the figure). As shown in FIG. 2, each of the casings 6 and 7 has a laterally cylindrical tubular portion 9, and an exhaust duct 10 is connected to one end (left side in the figure) of the tubular portion 9 in the circumferential direction. A first suction port 11 facing the opening 2a side shown in FIG. 1 is formed at substantially the center of the tubular portion 9. The exhaust port 10a of the exhaust duct 10 is opened in the upper plate portion 15 of the main body 2.

On the other hand, one end (right side in the figure) of the casings 6 and 7 shown in FIG. 1 is integrally fixed to an end plate 14 to which an air guide plate 20 described later is attached. A second suction port 12 is formed substantially in the center.

In FIG. 1, sirocco fans 3 and 4 which are rotationally driven by a motor 8 are housed in casings 6 and 7. That is, a motor 8 is arranged substantially in the center of the main body 2, the motor 8 is inserted into a mounting hole 18 formed in the rear plate portion 6a of the casing 6, and the mounting portion 19 of the motor 8 is screwed or the like. It is attached and fixed to the rear plate portion 6a. In this example, as shown in FIG. 1, a concave portion 3a is formed in the central portion of the sirocco fan 3, and a part (left side in the figure) of the motor 8 is loosely fitted into the concave portion 3a to downsize the air cleaning device 1. ing.

As shown in the figure, the rotary shaft 17 of the motor 8 extends left and right, and the left end of the rotary shaft 17 is inserted and fixed in the mounting hole 21 (rotary shaft hole) of the sirocco fan 3. The rotating shaft 17 extending to the right side on one side is selected to have a length reaching the inside of the casing 7, and the right end portion thereof is inserted and fixed in the mounting hole 21 (rotating shaft hole) of the sirocco fan 4. As a result, the sirocco fans 3 and 4 are mounted on the same rotary shaft 17, respectively.

In this example, the sirocco fans 3 and 4 are paired, and as shown in FIG. 2, the plurality of blades 13 and 13 forming the sirocco fan 3 (4) are arranged at regular intervals in the circumferential direction, and It is curved in the same direction (clockwise in this example). The curved direction of the concave portion of the blade 13 coincides with the rotation direction of the rotating shaft 17 and the sirocco fan 3 (4), and when the sirocco fan 3 (4) rotates, The air sucked from each of the second suction ports 12 is blown to the exhaust duct 10 side.

Here, the first and second suction ports 11 shown in FIG.
12 and the sirocco fans 3 and 4 have the same inner diameter t, and the mounting position of the motor 8 is selected so that the shaft center of the rotating shaft 17 is arranged at the central position of the first and second suction ports 11 and 12. Has been done. This is because when the sirocco fans 3 and 4 are rotated, external air is efficiently sucked from the first and second suction ports 11 and 12.

Next, the operation of the air cleaning device according to the present invention will be described. As shown in FIG. 3, in the air cleaning device 1, when the motor 8 is driven by a power switch (not shown), the sirocco fans 3 and 4 fixed to both ends of the rotation shaft 17 of the motor 8 rotate at substantially the same time.

External air is forcibly sucked from the opening 2a of the air cleaning device 1 by the suction force (wind force) generated by the rotation of the pair of sirocco fans 3 and 4. And in this example, FIG.
As indicated by the solid line arrow, the suction of the air passing through the substantially central portion (inside) of the dust collection filter 5 is performed by the sirocco fan 3, and the air purified by passing through the dust collection filter 5 is the first The air is exhausted from the intake port 11 through the exhaust duct 10 shown in FIGS. 2 and 4 to the room from the exhaust port 10a.

Similarly, in FIG. 3, the sirocco fan 4 sucks and exhausts the air passing through the outer peripheral side (corner portion) of the dust collecting filter 5 as shown by the chain line arrow in FIG.

That is, in this example, as shown in FIG. 5, the end plate 14 of the casing 7 is provided with the air guide plate 16 constituted by a plurality of ribs 16a to 16h. These ribs 16
In this example, a to 16h are formed so that the concave portions thereof curve in the clockwise direction toward the center of the second suction port 12 shown in FIG. Therefore, the air guide plate 16 forms a flow path (intake path) for guiding the air sucked from the outer peripheral side (corner portion) of the dust collecting filter 5 toward the second intake port 12.

Therefore, as shown in FIG. 3, the dust collecting filter 5
The air passing on the outer peripheral side is guided along the curved surface (inner peripheral surface) of each of the ribs 16a to 16h as shown by the chain line arrow in FIG. 5, and from the second suction port 12 as shown in FIG. The intake air passes through the exhaust duct 10 shown in FIG.
Exhausted indoors from b. With this, the dust collecting filter 5
The air can be easily sucked in from the outer peripheral side, and the entire surface of the dust collecting filter 5 can be used to efficiently suck in a wide range of air and clean it. In the air cleaning device 1, since the sirocco fans 3 and 4 for sucking outside air rotate at substantially the same time, the amount of sucked air can be increased, and this air is not collected in a part (central portion) of the dust collecting filter. Inhaled uniformly from the entire surface of the dust filter.

[0024]

As described above, the present invention provides the first aspect of the air cleaning apparatus for cleaning the intake air and exhausting it.
A motor for rotating the fan, a first exhaust port for exhausting air sucked from the first intake port by the first fan, and a second fan arranged on the rear side of the first fan, A second exhaust port for exhausting air sucked from the second suction port by the second fan; and a dust collecting filter for cleaning the air sucked by the first and second fans, The first fan and the second fan are provided coaxially with the rotation shaft of the motor.

Therefore, according to the present invention, the pair of fans forcibly sucking the external air, which are respectively provided on the rotary shafts of the motors, rotate at substantially the same time, so that the suction amount of the air can be increased. As a result, dust can be collected using the entire surface of the dust collecting filter, so that the dust collecting effect is enhanced. Further, since the entire surface of the dust collecting filter can be effectively used, there is an effect that the replacement cycle becomes long.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of an air cleaning device 1 according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a vertical cross-sectional view showing a blown state during operation of the air cleaning device 1.

FIG. 4 is a sectional view taken along line BB of FIG. 2;

FIG. 5 is a sectional view taken along line CC of FIG. 4;

[Explanation of symbols]

 1 Air Cleaning Device 2 Main Body 3,4 Sirocco Fan 5 Dust Collection Filter 8 Motor 10 Exhaust Duct 11 First Suction Port 12 Second Suction Port 16 Baffle Plate

Claims (2)

[Claims] 1. An air purifying device for purifying sucked air and exhausting the air, comprising: a motor for rotating a first fan; and a first fan for exhausting air sucked from a first inlet by the first fan. An exhaust port, a second fan disposed on the rear side of the first fan, a second exhaust port for exhausting air sucked from the second intake port by the second fan, A dust collecting filter for cleaning air sucked by the first and second fans, and the first fan and the second fan are provided on the same rotary shaft of the motor, respectively. An air purifier characterized by. 2. A baffle plate that forms a flow path toward the second suction port is provided between the first fan and the second fan. Air purifier.