JP3666205B2 - air purifier - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure of an air cleaner that sucks and cleans dust and tobacco smoke, blows out the cleaned air, and forms an air curtain so that tobacco smoke does not diffuse to the surroundings at this time. .
[0002]
[Prior art]
The conventional air cleaner is configured as shown in FIG. The interior 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 purification air suction port 5 is provided on the front surface of the housing 1, and purification is performed on the upper surface of the housing 1. The purifying air suction port 5 and the discharging port 6 are communicated with the front chamber 3, and the filter 7 for purifying the air sucked from the purifying air suction port 5 is provided in the front chamber 3. Decorated in. An air curtain air suction port 9 is provided on the rear surface of the housing 1, and air curtain outlets 10 are provided on both sides of the purification air suction port 5 on the front surface of the housing 1. The suction port 9 is communicated with the rear chamber 4, and the air curtain outlet 10 is communicated with the rear chamber 4 via the communication path 11. One fan 13 is housed in the opening 12 penetrating the partition plate 2 so as to extend into 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 the center of the fan base 32 of the fan 13. Then, when the fan 13 is driven to rotate by the motor 30, the air containing tobacco smoke and dust is sucked from the purification air suction port 5 as shown by the arrow a, and the dust and tobacco smoke are adsorbed to the filter 7. The cleaned air is discharged from the discharge port 6 as indicated by an arrow b. On the other hand, air is sucked into the rear chamber 4 from the air curtain air suction port 9 as indicated by an arrow c, and the air flows from the rear curtain 4 through the communication path 11 from the air curtain blower port 10 as indicated by an arrow d. Air curtains are formed on both sides of the purifying air inlet 5 by being blown out.
[0003]
[Problems to be solved by the invention]
The air purifier can clean the air and drive the air curtain only by driving one fan 13, but the air flowing through the front chamber 3 and the air flowing through the rear chamber 4 are mixed. There is a problem that the performance drops due to interference. In other words, in order to suck air into the front chamber 3 through the filter 7, the pressure in the front chamber 3 becomes low and the pressure in the rear chamber 4 becomes high. Air flows from the gap with the edge as shown by the arrow e without any harmful effects. For this reason, there is a problem that the pressure in the rear chamber 4 becomes low and a complete air curtain cannot be formed, and the pressure in the front chamber 3 becomes high and the force for sucking air from the purification air suction port 5 becomes weak, so that There is a problem that the efficiency of cleaning is reduced.
[0004]
The present invention has been made in view of the description, and it is an object to reduce the leakage of air between the front chamber and the rear chamber and prevent the performance of the air curtain and the air purification from being lowered. And
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the air purifier of the present invention provides the front chamber 3 and the rear chamber 4 by dividing the interior of the housing 1 forward and backward by the partition plate 2, and the purification air suction port 5 and the purification chamber are provided in the housing 1. And the purifying air suction port 5 and the discharging port 6 are communicated with the front chamber 3, and a filter 7 for purifying the air sucked from the purifying air suction port 5 is provided in the front chamber 3, An air curtain air inlet 9 and an air curtain outlet 10 are provided in the housing 1, and the air curtain air inlet 9 and the air curtain outlet 10 are communicated with the rear chamber 4 so as to penetrate the partition plate 2. 12, a single fan 13 is provided so as to extend into the front chamber 3 and the rear chamber 4, and the large-diameter fan portion 13a is formed by changing the outer diameters of the front chamber 3 side portion and the rear chamber 4 side portion of the fan 13. And small fan section 13b The opening 12 edge of the partition plate 2 is positioned on the outer periphery of the small diameter fan section 13b as well as characterized by comprising. A large-diameter fan portion 13a and a small-diameter fan portion 13b are formed by changing the outer diameters of the front chamber 3 side portion and the rear chamber 4 side portion of the fan 13 and the opening 12 edge of the partition plate 2 is formed in the small-diameter fan portion 13b. Because the pressure difference between the front chamber 3 and the rear chamber 4 causes air to flow between the opening 12 edge of the partition plate 2 and the outer periphery of the small-diameter fan portion 13b due to the pressure difference between the front chamber 3 and the rear chamber 4. Air becomes difficult to flow, and air leakage between the front chamber 3 and the rear chamber 4 is reduced, and the front chamber 3 and the rear chamber 4 are maintained at a predetermined pressure. Performance does not drop.
[0006]
The portion of the fan 13 on the front chamber 3 side is a small-diameter fan portion 13b, the portion of the fan 13 on the rear chamber 4 side is a large-diameter fan portion 13a, and the opening 12 edge of the partition plate 2 is on the outer periphery of the small-diameter fan portion 13b. It is also preferable to be characterized by being positioned. In this case, the rear chamber 4 can be blown by the large-diameter fan portion 13a, and the amount of blown air in the rear chamber 4 can be increased to form a more complete air curtain.
[0007]
In addition, an air curtain air suction port 9 is provided on the rear surface of the housing 1, and a separation protrusion 14 is provided on the rear surface of the housing 1 so that the rear surface of the housing 1 does not adhere to a wall surface or the like. It is also preferable to be characterized by comprising. 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 brought close to the wall surface or the like, the air curtain air suction port 9 is not blocked and the original performance can be exhibited. Abnormal heat generation can be prevented.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
First, the embodiment shown in FIGS. 1 to 5 will be described.
The housing 1 is formed in a flat rectangular box shape, and includes a fan 13, a motor 30 that drives the fan 13, and a filter 7 inside. As shown in FIGS. 4 and 5, the housing 1 includes a front plate 1a, a housing 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 chamber 3 and a rear chamber 4 are provided in the front and rear. 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 between the partition plate 2 of the wind tunnel member 1c and the rear plate 1d. Is the rear chamber 4. In the front chamber 3, a space between the front plate 1 a and the housing body 1 b is used as a filter storage space 15, and the filter 7 is stored in the filter storage space 15. The front plate 1 a of the housing 1 is provided with a purification air suction port 5, and the purification air suction port 5 communicates with the front chamber 3. A discharge port 6 is provided on the upper surface of the wind tunnel body 1 c of the housing 1, and the front chamber 3 is communicated with the discharge port 6. Wind guide members 16a and 16b are provided integrally with the wind tunnel member 1c above and below the rear chamber 4. An air curtain air suction port 9 is provided in the rear plate 1 d of the housing 1, and the air curtain air suction port 9 is communicated with the rear chamber 4. Air curtain outlets 10 are provided on the front surfaces of both sides of the casing body 1b of the casing 1, and the air curtain outlet 10 and the rear chamber 4 are communicated with each other via communication passages 11 on both sides.
[0009]
The front chamber 3 and the rear chamber 4 of the housing 1 are internally provided with a single fan 13 so as to reach the front chamber 3 and the rear chamber 4 through the opening 12 of the partition plate 2. 13 can be rotationally driven. The fan 13 is composed of a large-diameter fan portion 13a located in the rear chamber 4 and a small-diameter fan portion 13b located in the front chamber 3. The large-diameter fan portion 13a and the small-diameter fan are formed in the opening 12 of the partition plate 2. It is located on the outer periphery of the small-diameter fan portion 13b at a portion between the portion 13b. A fan base 32 is provided so as to be integrated with a portion between the large-diameter fan portion 13a and the small-diameter fan portion 13b of the fan 13, and a motor 30 is disposed on the inner peripheral side of the small-diameter fan portion 13b. The output shaft 31 of the motor 30 is connected to the center of the fan base 32. A concave portion 17 for a handle is formed in the upper portion of the back plate 1d of the casing 1 so that it can be carried by placing the hand on the concave portion 17. An operation switch 25 for operating the air cleaner is provided on the front surface of the housing 1. A leg portion 18 is attached to the lower end of the housing 1, and a projecting portion 14 projecting backward from the back plate 1 d of the housing 1 is provided integrally with the leg portion 18. In addition, the guide member 20 is integrally formed at both ends of the collecting portion 20a, a flat plate-like collecting portion 20a extending in the width direction of the housing 1, a protruding portion 20b integrally projecting from the lower surface of the collecting portion 20a. The leg portion 20c and the rectifying fan 20d are provided, and are formed of a material such as a synthetic resin. Leg storage recesses 21 that can store the leg portions 20c of the guide member 20 are provided on the side surfaces on both sides of the housing 1, and the attachment portions 22 at the ends of the leg portions 20c on both sides are provided on the upper portions of the leg storage recesses 21. It is rotatably mounted. The guiding member 20 is in a state where the guiding member 20 is used so that the collecting portion 20a is positioned above the discharge port 6, and the collecting member 20a is tilted so as to be along the front plate 1a. The storage state.
[0010]
When the motor 13 is driven by the motor 30, air containing dust and tobacco smoke is sucked from the purification air suction port 5 as indicated by an arrow a in FIG. 1, and dust and tobacco smoke are trapped in the filter 7. The collected air is cleaned, and the cleaned air is discharged from the discharge port 6 as shown by the 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 out from the rear curtain 4 through the communication path 11. . At this time, the pressure in the rear chamber 4 is higher than that in the front chamber 3, and there is a possibility that air flows from between the opening 12 edge of the partition plate 2 and the outer periphery of the fan 13. 1a and the small-diameter fan part 13b, and the edge of the opening 12 is positioned on the outer periphery of the small-diameter fan part 13b, so that even if there is a pressure difference, the air flows through a meandering path as shown by the arrow e in FIG. Thus, it becomes difficult for the air in this part to flow. Therefore, the air curtain can be reliably blown out from the air curtain outlet 10 and the air curtain can be reliably formed, and the air can be reliably sucked in from the purification air inlet 5 to improve the efficiency of air purification. In addition, since the large-diameter fan portion 13a is disposed in the rear chamber 4, the amount of air blown from the rear chamber 4 can be increased to more reliably form the air curtain. Moreover, although the housing 1 of an air cleaner is installed on a desk etc., even if the back surface of the housing 1 is brought close to a wall surface etc., the clearance gap is ensured between the back surface of the housing 1 and a wall surface etc. by the protrusion part 14, The air curtain suction port 9 is not blocked, so that the original function can be achieved, and the motor does not overheat. In addition, when the guide member 20 is put into use, a part of the wind discharged from the discharge port 6 on the upper surface is collected by the collecting portion 20a of the guide member 20, rectified by the rectifying fin 20d, and guided to the guide portion 20b. Then, the wind is guided downward in the guiding portion 20b and the wind is dropped downward, the cigarette smoke is guided to the purification air suction port 5, and the cigarette smoke from the purification air suction port 5 is introduced. Is surely sucked.
[0011]
FIGS. 6 and 7 are other examples, but the basic configuration is the same as the above example, and thus the description thereof is omitted. In the case of the example of FIG. 6, the partition plate 2 is shifted to the small-diameter fan portion 13 b side from the middle between the large-diameter fan portion 13 a and the small-diameter fan portion 13 b of the fan 13, and an opening 12 is formed on the outer periphery of the small-diameter fan portion 13. The edge is located. In the case of the example in FIG. 7, the partition plate 2 is arranged in the middle portion between the large-diameter fan portion 13 a and the small-diameter fan portion 13 b of the fan 13, and toward the small-diameter fan portion 13 b side toward the opening 12 side. An inclined portion 24 that is inclined is provided, and the edge of the opening 12 is positioned on the outer periphery of the small-diameter fan portion 13b.
[0012]
In the above example, the large-diameter fan portion 13a of the fan 13 is positioned in the rear chamber 4 and the small-diameter fan portion 13b is positioned in the front chamber 3. However, the large-diameter fan portion 13a is positioned on the front chamber 3 side, Even if the fan portion 13b is positioned on the rear chamber 4 side and the opening 12 edge of the partition plate 2 is positioned on the outer periphery of the small-diameter fan portion 13b, air leaks between the front chamber 3 and the rear chamber 4 as described above. Can be prevented.
[0013]
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 13 b 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 protrudes from the end face of the fan 13, the length in the front-rear direction of the unit in which the motor 30 and the fan 13 are assembled is A, and the air cleaner 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, and the inside of the fan 13 is kept so that the end face of the motor 30 does not protrude from the end face of the fan 13. The motor 30 is housed in the motor 30 and the output shaft 31 of the motor 30 is connected to the center of the fan base 32. If it does in this way, the front-rear length of the unit which assembled the motor 30 and the fan 13 will become short with B (B <A) same as the front-back length of the fan 13, and an air cleaner will not become large sized.
[0014]
FIG. 9 shows another example. In the case of this example, the position of the fin 34 of the large-diameter fan part 3a located on the rear side and the position of the fin 35 of the small-diameter fan part 3b located on the front side are shifted in the circumferential direction. If it does in this way, the noise at the time of driving the fan 13 can be reduced.
[0015]
【The invention's effect】
As described above, the present invention forms the large-diameter fan portion and the small-diameter fan portion by changing the outer diameters of the front chamber side portion and the rear chamber side portion of the fan and the opening edge of the partition plate of the small-diameter fan portion. Because it is located on the outer periphery, the flow path becomes complicated and air flows even if an attempt is made to flow air between the opening edge of the partition plate and the outer periphery of the small-diameter fan part due to the pressure difference between the front chamber and the rear chamber. The air leakage between the front chamber and the rear chamber is reduced, the front chamber and the rear chamber are maintained at a predetermined pressure, and the performance of the air curtain and the air cleaning is not deteriorated.
[0016]
In the invention according to claim 2 of the present invention, the front chamber side portion of the fan is a small diameter fan portion, the rear chamber side portion of the fan is a large diameter fan portion, and the opening edge of the partition plate is a small diameter. Since it is located on the outer periphery of the fan portion, the rear chamber side can be blown by the large-diameter fan portion, and the amount of blown air in 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 curtain air suction port is provided on the rear surface of the housing, and the separation protrusion is provided on the rear surface of the housing so that the rear surface of the housing does not adhere to the wall surface or the like. Since the unit is provided on the back of the cabinet, even if the cabinet is placed on a desk and the back of the cabinet is close to the wall, etc., the air inlet for the air curtain will not be blocked and the original performance can be demonstrated. In addition, abnormal heat generation of the motor can be prevented.
[Brief description of the drawings]
FIG. 1 shows an outline of an example of an embodiment of an air cleaner according to the present invention, in which (a) is a cross-sectional view seen from a side, and (b) is a cross-sectional view seen from a plane.
FIG. 2 is a front view of the above air cleaner.
FIG. 3 is a side view of the above air cleaner.
FIG. 4 is an exploded perspective view of the above air cleaner.
FIG. 5 is a partially exploded perspective view seen from the other direction.
6A and 6B show an outline of another example of the above, in which FIG. 6A is a cross-sectional view seen from a side surface, and FIG. 6B is a cross-sectional view seen from a plane.
FIG. 7 is a cross-sectional view seen from the side showing the outline of another example of the above.
FIG. 8 is a schematic explanatory diagram for explaining another example of the above, (a) showing a comparative example, and (b) showing the present invention.
FIG. 9 is an explanatory diagram for explaining another example of the above.
10A and 10B show an outline of a conventional example, in which FIG. 10A is a partially omitted cross-sectional view viewed from a side surface, and FIG. 10B is a cross-sectional view viewed from a plane.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Housing | casing 2 Partition plate 3 Front chamber 4 Rear chamber 5 Purification air suction port 6 Discharge port 7 Filter 9 Air curtain suction port 10 Air curtain outlet 12 Opening 13 Fan 13a Large-diameter fan portion 13b Small-diameter fan portion 14 Projection

Claims (3)

The interior of the enclosure is divided into front and rear chambers by a partition plate to provide a front chamber and a rear chamber. A filter that purifies the air sucked from the air inlet for purification is installed in the front chamber, and the air curtain air inlet and air curtain outlet are provided in the housing, and the air curtain air inlet and air curtain are provided. The blower port communicates with the rear chamber, and one fan is installed in the opening that penetrates the partition plate so as to extend into the front chamber and the rear chamber. The air cleaner is characterized in that a large-diameter fan portion and a small-diameter fan portion are formed differently and an opening edge of the partition plate is positioned on the outer periphery of the small-diameter fan portion. The front chamber side portion of the fan is a small-diameter fan portion, the rear chamber side portion of the fan is a large-diameter fan portion, and the opening edge of the partition plate is positioned on the outer periphery of the small-diameter fan portion. Item 1. An air purifier according to Item 1. An air inlet for an air curtain is provided on the rear surface of the housing, and a separation protrusion is provided on the rear surface of the housing to prevent the rear surface of the housing from being in close contact with a wall surface or the like. Item 3. The air purifier according to item 1 or 2.

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