JPH10153331A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the performance of an air curtain and air cleaning from deteriorating by reducing air from leaking between front and rear rooms. SOLUTION: The inside of an enclosure 1 is screened by a screening plate 2 and a front room 3 and a rear room 4 are provided. An air suction port 5 for and a discharge port 6 are connected to the front room 3. A filter 7 for purifying air sucked from the air suction port 5 for cleaning is provided in the front room 3. An air suction port 9 for air curtain and a discharge port 10 for air curtain are connected to the rear room 4. One fan 13 is provided at an opening 13 through the screening plate 2 so that it covers both the front room 3 and the rear room 4. By differing the outer diameters of a part at the side of the front room 3 of the fan 13 and a part at the side of the rear room 4, a fan part 13a with a large diameter and a fan part 13b with a small diameter are formed and at the same time the edge of the opening 12 of the screening plate 2 is positioned at the outer periphery of the fan part 13b with a small diameter.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air cleaner for sucking and purifying dust and tobacco smoke, blowing out the purified air, and forming an air curtain at this time so that the tobacco smoke does not diffuse to the surroundings. It is related to the structure of the container.

[0002]

2. Description of the Related Art A conventional air purifier is configured as shown in FIG. The inside of the housing 1 is divided into front and rear by a partition plate 2 to provide a front chamber 3 and a rear chamber 4. A purifying air suction port 5 is provided on the front surface of the housing 1, and a purification air is provided on an upper surface of the housing 1. The cleaning air suction port 5 and the discharge port 6 are connected to the front chamber 3, and the filter 7 for purifying the air sucked from the cleaning air suction port 5 is connected to the front chamber 3. Interior. An air inlet 9 for air curtain is provided on the back of the housing 1, and air outlets 10 for air curtain are provided on both sides of the purifying air inlet 5 on the front of the housing 1. The suction port 9 is connected to the rear chamber 4, and the air curtain outlet 10 is connected to the rear chamber 4 via the communication path 11. One fan 13 is provided inside the opening 12 penetrating the partition plate 2 so as to extend to the front chamber 3 and the rear chamber 4. A motor 30 is arranged on the inner peripheral side of the fan 13, and an output shaft 31 of the motor 30 is connected to a center of a fan base 32 of the fan 13. Then, motor 3
When the fan 13 is driven to rotate at 0, air containing tobacco smoke and dust is sucked from the purification air suction port 5 as shown by an arrow a, and the dust and tobacco smoke are adsorbed to the filter 7 and purified. The discharged air is discharged from the discharge port 6 as shown by an arrow b. On the other hand, air is drawn into the rear chamber 4 from the air curtain air suction port 9 as shown by an arrow c, and air is drawn from the air curtain outlet 10 through the communication passage 11 as shown by an arrow d from the rear chamber 4. The air curtain is blown out and air curtains are formed on both sides of the cleaning air suction port 5.

[0003]

The above air purifier has the following features.
It is possible to clean the air and form an air curtain simply by driving the two fans 13, but the air flowing in the front chamber 3 and the air flowing in the rear chamber 4 are mixed and interfere with each other to reduce the performance. There's a problem. That is, the front chamber 3 is sucked into the front chamber 3 through the filter 7.
Is low, and the pressure in the rear chamber 4 is high. Due to this pressure difference, air flows from the gap between the outer periphery of the fan 13 and the edge of the opening 12 without any trouble as shown by the arrow e. For this reason, there is a problem that the pressure of the rear chamber 4 becomes low and a complete air curtain cannot be formed. In addition, the pressure of the front chamber 3 becomes high and the power of sucking air from the air inlet for purification 5 becomes weak, so that the air is There is a problem that the cleaning efficiency is reduced.

SUMMARY OF THE INVENTION The present invention has been made in view of the above description, and it is intended to reduce air leakage between a front room and a rear room to prevent the performance of an air curtain or air cleaning from being deteriorated. That is the task.

[0005]

In order to solve the above-mentioned problems, an air purifier of the present invention is provided with a front chamber 3 and a rear chamber 4 by partitioning the inside of a housing 1 back and forth by a partition plate 2. A filter for purifying air sucked from the purifying air suction port 5 by providing a purifying air suction port 5 and a discharge port 6 for purified air at the same time and connecting the purifying air suction port 5 and the discharge port 6 to the front chamber 3. 7 is provided in the front room 3, and an air inlet 9 for air curtain and an air outlet 10 for air curtain are provided in the housing 1, and the air inlet 9 for air curtain and the air outlet 10 for air curtain are connected to the rear room 4. One fan 13 is provided inside the opening 12 penetrating the partition plate 2 so as to extend over the front chamber 3 and the rear chamber 4.
3, the large-diameter fan portion 13a and the small-diameter fan portion 13b are formed with different outer diameters of the front-chamber 3 side portion and the rear-chamber 4 side portion, and the opening 12 edge of the partition plate 2 is formed by the small-diameter fan portion 13b. It is characterized by being located on the outer periphery. The large-diameter fan portion 13a and the small-diameter fan portion 13b are formed by changing the outer diameter of the front chamber 3 side portion and the rear chamber 4 side portion of the fan 13 and the edge of the opening 12 of the partition plate 2 is formed by the small diameter fan portion 13b. Is located on the outer periphery of the partition wall 2, even if air flows between the edge of the opening 12 of the partition plate 2 and the outer periphery of the small-diameter fan portion 13 b due to the pressure difference between the front chamber 3 and the rear chamber 4, The air becomes difficult to flow, and the air leakage between the front room 3 and the rear room 4 is reduced, so that the front room 3 and the rear room 4 are maintained at a predetermined pressure. Performance does not drop.

A portion of the fan 13 on the front chamber 3 side is a small-diameter fan portion 13b, a portion of the fan 13 on the rear chamber 4 side is a large-diameter fan portion 13a, and the edge of the opening 12 of the partition plate 2 is a small-diameter fan portion 13b. It is also preferable that it is characterized by being located on the outer periphery of. In this case, the rear chamber 4 side can be blown by the large-diameter fan portion 13a, and the blow volume of the rear chamber 4 can be increased to form a more complete air curtain.

Further, an air inlet 9 for an air curtain is provided on the back surface of the housing 1, and a projecting portion 14 for separation is provided on the back surface of the housing 1 so that the back surface of the housing 1 does not adhere to a wall surface or the like.
Is preferably provided on the back surface of the housing 1. In this case, even if the housing 1 is placed on a desk or the like and the back surface of the housing 1 is close to a wall or the like, the air suction port 9 for the air curtain is not blocked, and the original performance can be exhibited. Abnormal heat generation can be prevented.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the embodiment shown in FIGS. 1 to 5 will be described. The housing 1 is formed in a flat rectangular box shape, and has a fan 13 and a motor 3 for driving the fan 13 therein.
0 and filter 7 are installed. As shown in FIGS. 4 and 5, the housing 1 includes a front plate 1a, a housing main body 1b, a wind tunnel member 1c, and a back plate 1d. The inside of the housing 1 is divided into front and rear by a partition plate 2, and a front room 3 and a rear room 4 are front and rear.
Are provided. The partition plate 2 is provided in the wind tunnel member 1c, and the space between the front plate 1a and the partition plate 2 of the wind tunnel member 1c is the front chamber 3, and the partition plate 2 of the wind tunnel member 1c and the rear plate 1d.
Is between the rear room 4. The space between the front panel 1a and the housing body 1b in the front room 3 is a filter storage space 15, and the filter 7 is stored in the filter storage space 15. A purifying air suction port 5 is provided on the front plate 1 a of the housing 1, and the purifying air suction port 5 is communicated with the inside of the front room 3. A discharge port 6 is provided on the upper surface of the wind tunnel main body 1 c of the housing 1, and the front chamber 3 communicates with the discharge port 6. Above and below the rear chamber 4, wind guide members 16a and 16b are provided integrally with the wind tunnel member 1c. An air inlet 9 for an air curtain is provided in the rear plate 1 d of the housing 1, and the air inlet 9 for the air curtain is connected to the rear chamber 4. An air curtain outlet 10 is provided on the front surface on both sides of the housing body 1b of the housing 1, and the air curtain outlet 10 and the rear chamber 4 are communicated with each other through communication passages 11 on both sides.

The front chamber 3 and the rear chamber 4 of the housing 1 are connected to the front chamber 3 and the rear chamber 4 through the opening 12 of the partition plate 2.
One fan 13 is provided therein, and the motor 13 can be driven to rotate by the motor 30. This fan 1
Reference numeral 3 denotes a large-diameter fan section 13a located in the rear chamber 4 and a small-diameter fan section 13b located in the front chamber 3. The opening 12 of the partition plate 2 is formed by the large-diameter fan section 13a and the small-diameter fan section 13b. Is located on the outer periphery of the small-diameter fan portion 13b. A fan base 32 is provided at a portion between the large-diameter fan portion 13a and the small-diameter fan portion 13b of the fan 13 so as to be integrated therewith.
The motor 30 is arranged on the inner peripheral side of the motor b.
0 is connected to the center of the fan base 32. In the upper part of the back plate 1d of the housing 1, a concave portion 1 for a handle is provided.
7 is recessed, and can be carried by hanging a hand on the recess 17. An operation switch 25 for operating the air purifier is provided on the front surface of the housing 1. A leg 18 is attached to the lower end of the housing 1.
The projections 14 projecting rearward from the rear plate 1d of the
It is provided integrally. The guide member 20 includes a flat collecting portion 20a having a length extending in the width direction of the housing 1, and a collecting portion 20a.
A guiding portion 20b integrally projecting from the lower surface of the
a leg 20c integrally provided at both ends of the
d) and is made of a material such as a synthetic resin. The legs 20 of the guide member 20 are provided on both side surfaces of the housing 1.
c are provided, and the mounting portions 22 at the ends of the legs 20 c on both sides are attached to the leg storage recesses 21.
Is rotatably mounted on the upper part. The state in which the guide member 20 is rotated so that the collection unit 20a is positioned above the discharge port 6 is the use state of the guide member 20, and the collection unit 20a
Is a storage state when it is folded down along the front plate 1a.

When the fan 13 is driven by the motor 30, air containing dust and tobacco smoke is sucked from the purifying air suction port 5 as shown by an arrow a in FIG. The smoke is collected, the air is purified, and the purified air is discharged from the discharge port 6 as shown by an arrow b in FIG. On the other hand, air is sucked into the rear chamber 4 from the air curtain suction port 9 as shown by the arrow c in FIG. 1, and air is blown from the rear curtain 4 through the air curtain outlet 10 through the communication passage 11. . At this time, the pressure of the rear chamber 4 is higher than that of the front chamber 3, and there is a possibility that air flows from between the edge of the opening 12 of the partition plate 2 and the outer periphery of the fan 13 and leaks. 13
a and the small-diameter fan portion 13b, and since the edge of the opening 12 is located on the outer periphery of the small-diameter fan portion 13b, even if there is a pressure difference, the air flows in a meandering path as shown by an arrow e in FIG. , And it becomes difficult for the air in this part to flow.
Therefore, the air curtain can be reliably formed by blowing air strongly from the air curtain outlet 10, and the air can be reliably sucked in from the purifying air inlet 5 to improve the efficiency of air purification. Further, since the large-diameter fan portion 13a is disposed in the rear chamber 4, the amount of air blown from the rear chamber 4 is increased, so that the air curtain can be formed more reliably. Further, the housing 1 of the air purifier is installed on a desk or the like. Even if the rear surface of the housing 1 is brought close to a wall surface or the like, a gap is secured between the rear surface of the housing 1 and the wall surface or the like by the protruding portion 14, The air curtain suction port 9 is not blocked, and can perform its original function, and the motor does not generate abnormal heat. Further, when the guide member 20 is in the use state, a part of the wind discharged from the discharge port 6 on the upper surface is collected by the collection portion 20a of the guide member 20, rectified by the rectifying fins 20d, and guided to the guide portion 20b. Then, the wind is guided by the guiding portion 20b so as to face diagonally downward, and the wind is dropped downward,
The tobacco smoke is guided to the purifying air suction port 5, and the tobacco smoke is reliably sucked from the purifying air suction port 5.

FIGS. 6 and 7 show other examples, but the basic configuration is the same as that of the above-mentioned example, and the description is omitted. In the case of the example of FIG. 6, the partition plate 2 is connected to the large-diameter fan portion 13a of the fan 13.
Fan part 1 smaller than the middle between the fan part 13b and the small diameter fan part 13b
The edge of the opening 12 is positioned on the outer periphery of the small-diameter fan portion 13 and is offset toward the 3b side. In the case of the example of FIG. 7, the partition plate 2 is connected to the large-diameter fan portion 13a and the small-diameter fan portion 13b of the fan 13.
The partition plate 2 is provided with an inclined portion 24 which is inclined toward the small-diameter fan portion 13b toward the opening 12 side, and the edge of the opening 12 is positioned on the outer periphery of the small-diameter fan portion 13b. .

In the above example, the large-diameter fan section 13a of the fan 13 is located in the rear chamber 4 and the small-diameter fan section 13b is located in the front chamber 3, but the large-diameter fan section 13a is located on the front chamber 3 side. And the small diameter fan portion 13b is positioned on the rear chamber 4 side,
Even if the edge of the opening 12 of the partition plate 2 is located on the outer periphery of the small-diameter fan portion 13b, it is possible to prevent the air from leaking between the front chamber 3 and the rear chamber 4 as described above.

FIG. 8 shows another example. As shown in FIG. 8A, the motor 30 is disposed on the inner peripheral side of the small diameter fan portion 13b of the fan 13, and the output shaft 31 of the motor 30 is connected to the center of the fan base 32 of the fan 13. If the length in the front-rear direction is long, the motor 30
3, the unit in which the motor 30 and the fan 13 are assembled has a length A in the front-rear direction, which causes a problem that the air purifier becomes large. Therefore, in the present invention, the fan base 32 is bent toward the large-diameter fan portion 13a as shown in FIG. 8B, so that the end face of the motor 30 does not protrude beyond the end face of the fan 13. The output shaft 31 of the motor 30 is connected to the center of the fan base 32. By doing so, the front-rear length of the unit in which the motor 30 and the fan 13 are assembled is reduced to B (B <A), which is the same as the front-rear length of the fan 13, and the air purifier does not become large.

FIG. 9 shows another example. In the case of this example, the positions of the fins 34 of the large-diameter fan portion 3a located on the rear side and the positions of the fins 35 of the small-diameter fan portion 3b located on the front side are shifted in the circumferential direction. In this way, the fan 13
Can reduce the noise when driving.

[0015]

As described above, according to the present invention, the large-diameter fan portion and the small-diameter fan portion are formed by changing the outer diameter of the front chamber side portion and the rear chamber side portion of the fan, and the opening edge of the partition plate is formed. Is located on the outer circumference of the small diameter fan section, so that the pressure difference between the front chamber and the rear chamber makes the air flow between the opening edge of the partition plate and the outer circumference of the small diameter fan section complicated. Air flow becomes difficult, air leakage between the front room and the rear room is reduced, the front room and the rear room are maintained at a predetermined pressure, and the performance of the air curtain and air purification does not decrease Things.

In the invention according to claim 2 of the present invention, the portion of the fan on the front chamber side is a small-diameter fan portion, and the portion of the fan on the rear chamber side is a large-diameter fan portion. Since the edge is located on the outer periphery of the small-diameter fan portion, the rear chamber side can be blown by the large-diameter fan portion, and the amount of air blown into the rear chamber can be increased to form a more complete air curtain. In the invention according to claim 3 of the present invention, an air suction port for an air curtain is provided on the back of the housing, and a projection for separation is provided on the back of the housing so that the back of the housing does not adhere to a wall surface or the like. The unit is provided on the back of the housing, so even if the housing is placed on a desk and the back of the housing is close to a wall, etc., the air intake for the air curtain will not be blocked, and the original performance can be exhibited. Further, abnormal heat generation of the motor can be prevented.

[Brief description of the drawings]

1 schematically shows an example of an embodiment of an air purifier according to the present invention, wherein (a) is a cross-sectional view as viewed from a side, and (b) is a cross-sectional view as viewed from a plane.

FIG. 2 is a front view of the air purifier.

FIG. 3 is a side view of the air purifier of the above.

FIG. 4 is an exploded perspective view of the air purifier.

FIG. 5 is a partially exploded perspective view of the same as seen from another direction.

6A and 6B schematically show another example of the above, in which FIG. 6A is a cross-sectional view as viewed from a side, and FIG. 6B is a cross-sectional view as viewed from a plane.

FIG. 7 is a cross-sectional view schematically showing another example of the above, viewed from the side.

FIG. 8 is a schematic explanatory view illustrating another example of the above.
(A) shows a comparative example, (b) shows the thing of the present invention.

FIG. 9 is an explanatory diagram illustrating another example of the above.

10A and 10B schematically show a conventional example, in which FIG. 10A is a partially omitted cross-sectional view as viewed from a side, and FIG. 10B is a cross-sectional view as viewed from a plane.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 2 Partition plate 3 Front room 4 Rear room 5 Purification air suction port 6 Discharge port 7 Filter 9 Air curtain suction port 10 Air curtain discharge port 12 Opening 13 Fan 13a Large diameter fan section 13b Small diameter fan section 14 Projection section

Claims (3)

[Claims] An interior of a housing is divided into front and rear compartments by a partition plate to provide a front chamber and a rear chamber. A cleaning air suction port and a purified air discharge port are provided in the housing, and a purification air suction port and a discharge port. Is connected to the front room, and a filter for purifying air sucked from the air inlet for purification is installed in the front room,
An air curtain air inlet and an air curtain outlet are provided in the housing, and the air curtain air inlet and the air curtain outlet are connected to the rear chamber, and the front and rear chambers are opened through the partition plate. And a large-diameter fan portion and a small-diameter fan portion with different outer diameters of the front-chamber-side portion and the rear-chamber-side portion of the fan. An air purifier characterized by being located on the outer periphery of a small diameter fan unit. 2. A small-diameter fan portion on the front chamber side of the fan and a large-diameter fan portion on the rear chamber side of the fan,
2. The air purifier according to claim 1, wherein an opening edge of the partition plate is located at an outer periphery of the small diameter fan portion. 3. An air suction port for an air curtain is provided on the rear surface of the housing, and a projection for separation is provided on the rear surface of the housing on the rear surface of the housing so that the rear surface of the housing does not adhere to a wall surface or the like. The air purifier according to claim 1 or 2, wherein: