JPH11211164A - Blower unit for air cleaning - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner high in fan efficiency by realizing the downsizing and light weight construction. SOLUTION: A cylindrical HEPA filter 3 is arranged, so that the shaft may orthogonally cross a ceiling plate S, inside a casing 2, and a tubular fan 12 is arranged in its inside. A suction port 4 is made under the tubular fan 12, and also a jet port 5 is made at the bottom of the space 14 between the HEP filter 3 and the casing 2. Hereby, outside air sucked in from a suction port 4 is diffused around by the tubular fan 12, and it contacts equally with the HEP filter 3. The air having passed the HEPA filter 3 is blown out to outside from the jet 5, passing through the space 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifying blower unit in which a fan and a filter are housed in one casing.

[0002]

2. Description of the Related Art In general, a fan filter unit (hereinafter, referred to as FFU) 71 as shown in FIG. 12 is known as an air purifying blower unit used in air conditioning equipment of a general building or a factory. I have. The casing 72 of the FFU 71 shown in the figure is disposed above the ceiling plate S such that the bottom is substantially the same as the surface of the ceiling plate S. Inside the casing 72 shown in this figure, a fan 73 with a housing such as a sirocco fan is provided. A suction port 74 formed in the casing 72 is provided with a pre-filter 75, and air is taken in from the suction port 74 via the pre-filter 75. Further, a HEPA filter 77 is disposed on the side of the air outlet 76 of the casing 72, and a fan 73 is provided.
The air blown out by the HEPA filter 7
7 and is blown out as clean air. Rectifying means such as punching faces 78 and 79 are provided on the blow-out side of the fan 73 so that the clean air is diffused.

FIG. 1 shows another configuration example of a conventional FFU.
3 is shown. In the FFU 81 shown in FIG. 13, the duct 84 is connected to the casing 83 because the outlet 82 is apart. In this case, a HEPA filter 86 is arranged below the fan 85 inside the casing 83, and air is sucked through a suction port 87 formed below the HEPA filter 86. The suction port 87 is provided with a punching plate 88. Also, HEP
The air that has passed through the A filter 86 is sent into the duct 84 by the fan 85 and is blown out from the outlet 82 as clean air.

FIG. 14 shows a conventional floor-mounted FFU.
91 shows an example of the configuration. As shown in the figure, for example, two casings 92 are arranged in the vertical direction, and a fan 93 is installed in each casing 92. A suction port 94 is formed on the back surface of each casing 92, and air is sucked from the suction port 94,
The air that has passed through the HEPA filter 95 is blown out from the outlet 96 as clean air. In addition, between the fan 93 and the HEPA filter 95,
A current plate 97 is provided so that the clean air is diffused. In addition, by disposing a cooling coil between them, it can be used as an air conditioner in addition to a simple air cleaning blower unit.

FIG. 15A shows an example of a conventional air conditioner 100. This air conditioner 1
Reference numeral 00 denotes a fan in which a fan 103 is arranged inside a rectangular coil 102 built in a casing 101. A HEPA filter 1 is provided below the fan 103.
04 is arranged. Further, the HEPA filter 10
A suction port 105 for sucking air is provided at a lower portion of the air inlet 4, and external air is sucked from the suction port 105 by rotation of the fan 103. An outlet 106 is formed around the inlet 105, and the clean air sent out by the fan 103 via the coil 102 is blown out from the outlet 106.

FIG. 15B shows the configuration of an air conditioner 111 of a ceiling-hanging exposure type. In this case, the casing 11
2 is suspended from the ceiling, and the casing 1
Air is sucked in from a suction port 113 formed at one end of the nozzle 12. And the sucked air is H
The air passes through the EPA filter 114 and the coil 115, and is blown out from the outlet 117 by the fan 116.

[0007]

The above-mentioned conventional FFU has the following problems. First, in the FFU 71 shown in FIG.
3 and the HEPA filter 77 is arranged in a plane to increase the volume.
It was difficult to reduce the size and weight of the device itself. Further, since the airflow blown out by the fan 73 is a high-speed jet, the blown airflow hardly hits the surface of the HEPA filter 77 uniformly.
As a result, the pressure loss in the area where the blown air flow is concentrated in the HEPA filter 77 increases, the power required by the fan also increases, causing noise and causing the wind speed of the clean air to be blown out to be uniform. was there.

[0008] Similarly, the FFU 81 shown in FIG.
6 makes it difficult to reduce the size of the FFU 81. Similarly,
Also in the FFU 91 shown in FIG. 14 and the air conditioners 100 and 111 shown in FIG. 15, it is difficult to reduce the size of the device, and there are problems such as an increase in pressure loss, noise, and required power of the fan.

The present invention has been proposed to solve the problems of the prior art as described above.
It is an object of the present invention to provide an air purifying blower unit that realizes downsizing, has low pressure loss, generates low noise, and requires a small power required by a fan.

[0010]

In order to achieve the above object, an air purifying blower unit according to the present invention comprises a tubular filter having a tubular shape and a hollow inside, and a tubular filter having a hollow inside. A fan that is disposed on the inside of the cylindrical filter and that diffuses air sucked inward from one end in the axial direction of the cylindrical filter so as to uniformly contact the cylindrical filter, and the cylindrical filter and the fan are housed therein. A suction port formed so that outside air is sucked into the inside of the filter, and an outlet for blowing out the air that has passed through the cylindrical filter after being diffused around by the fan. And a casing.

According to the first aspect of the present invention, the external air is sucked in from one end of the cylindrical filter through the suction port of the casing by the fan disposed inside the cylindrical filter. It is diffused to make uniform contact with the filter. This air passes through the cylindrical filter and is blown out from the outlet of the casing. As described above, since the air diffused by the fan uniformly contacts the cylindrical filter, the pressure loss in the airflow path and the cylindrical filter is reduced, the generated noise is reduced, and the clean air blown to the outside is reduced. The air can be blown out evenly, and the power required for the fan is also reduced. Further, since the fan is arranged inside the cylindrical filter, the size of the blower unit itself can be reduced. Further, as one form of the fan, a cylindrical fan may be used, whereby the air can be more uniformly diffused.

[0012] According to a second aspect of the present invention, in the air purifying blower unit according to the first aspect, the fan is disposed coaxially with the cylindrical filter, and has a hollow cylindrical inside. In addition, the present invention is characterized in that it is a cylindrical fan configured to diffuse air sucked inward from one end in the axial direction to the periphery from the side.

According to the second aspect of the present invention, since the cylindrical fan is used, air can more uniformly contact the cylindrical filter.

According to a third aspect of the present invention, in the air purifying blower unit according to the first or second aspect, the casing is attached to a ceiling plate, and the cylindrical filter has a shaft having the shaft. In a direction orthogonal to the ceiling plate, the side surface is attached so as to have a space between the casing and the casing, the suction port is formed below the cylindrical filter, and the outlet is the cylindrical type. It is characterized in that it is formed at the lower end of the space formed between the side surface of the filter and the casing.

According to the third aspect of the invention, external air is sucked into the fan from below the cylindrical filter,
It is diffused from the side of the fan to the surroundings. Then, the diffused air uniformly contacts and passes through the surface of the cylindrical filter, flows into the space formed between the side surface of the cylindrical filter and the casing, and is blown out from the outlet. With this configuration, it is possible to reduce the size and weight of the device and to blow out clean air uniformly to the outside.

According to a fourth aspect of the present invention, in the air purifying blower unit according to the third aspect of the present invention, the casing is connected to a duct communicating with the space in the casing, and an end of the duct is connected to the end of the duct. It is characterized by forming an air outlet.

According to the fourth aspect of the present invention, the same effect can be obtained even when the position of the blower unit for cleaning air and the position where the clean air is actually blown away are separated. Especially, when taking out ducts in multiple directions, conventional FFU
Although it was necessary to install a chamber device for branching in the above, in the present invention, the device can be taken out directly from the casing in a plurality of directions, so that the device can be easily reduced in size.

According to a fifth aspect of the present invention, in the air purifying blower unit according to the first or second aspect, the casing is attached to a ceiling plate, and the cylindrical filter has a shaft having the shaft. In a direction orthogonal to the ceiling plate, the side surface is attached so as to have a space between the casing and the casing, the suction port is formed above the cylindrical filter, and the outlet is the cylindrical type. It is characterized in that it is formed at the lower end of the space formed between the side surface of the filter and the casing.

According to the fifth aspect of the present invention, external air is sucked into the fan from above the cylindrical filter,
It is diffused from the side of the fan to the surroundings. Then, the diffused air uniformly contacts and passes through the surface of the cylindrical filter, flows into the space formed between the cylindrical filter and the side plate of the casing, and is blown out from the outlet.

A plurality of such blower units are installed on the ceiling of a clean room, and the clean air blown from the blower units is passed through the floor of the clean room and the return space provided outside the clean room. Then, it can be configured to return to each blower unit. This makes it possible to install a plurality of small and lightweight blower units to form an efficient clean room.

According to a sixth aspect of the present invention, in the air purifying blower unit according to the first or second aspect, the casing is installed on a floor.
The cylindrical filter is mounted so that a shaft is horizontal to the floor surface and at least a side surface has a space between the casing and the casing, and the suction port is formed near one end of the cylindrical filter. The outlet is formed in a space formed between the cylindrical filter and the casing.

According to the sixth aspect of the present invention, external air is sucked into the inside of the fan from one end of the cylindrical filter and diffused from the side of the cylindrical filter to the periphery. The diffused air uniformly contacts the cylindrical filter, flows into the space formed between the cylindrical filter and the casing, and is blown out from the outlet. With this configuration, it is possible to reduce the size and weight of the floor-mounted air cleaning blower unit, and to uniformly blow clean air to the outside. In addition, such small size
By stacking lightweight blower units vertically or vertically and horizontally, it is possible to provide a blower unit for air cleaning which is small but has sufficient cleaning power.

According to a seventh aspect of the present invention, there is provided an air cleaning blower unit according to any one of the first to sixth aspects, wherein a heat exchanger is arranged near the fan. . According to the seventh aspect of the present invention, a cooling coil or a heating coil is disposed as a heat exchanger in the vicinity of the fan, for example, between the cylindrical filter and the fan, so that the cooling and heating device is small, lightweight, and efficient. Can be configured.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of an air purifying blower unit according to the present invention will be specifically described with reference to the drawings.

[1. First Embodiment] [1-1. Configuration] FIG. 1 is a diagram showing a configuration of an air purifying blower unit (hereinafter, FFU) 1 according to the present embodiment. In the figure, FFU1 is a cylindrical casing 2
The casing 2 is disposed above the ceiling plate S so that the axial direction thereof is perpendicular to the ceiling plate S and the bottom is substantially the same as the surface of the ceiling plate S. The casing 2 is suspended from above the ceiling plate S by suspending means (not shown), or is screwed to the ceiling plate S by screw means (not shown).
Further, inside the casing 2, a cylindrical HEPA filter 3 is arranged coaxially with the casing 2. This H
The inside of the EPA filter 3 is hollow, and the upper part is in close contact with the lower side of the upper surface plate 2 a of the casing 2.

A bottom member 6 is provided at the bottom of the casing 2. The bottom member 6 has an inlet 4 for guiding air at the center of the HEPA filter 3 and an outlet 5 for sending clean air blown from the HEPA filter 3 into a room. The bottom member 6 is connected to the air sucked from the suction port 4 and the air outlet 5.
In order not to mix with the air blown out from
The lower part of the HEPA filter 3 has a cylindrical shape, and is configured to be supported from the ceiling plate S side by a support frame.

The punching face 10 is supported by the bottom member 6 while maintaining a predetermined space between the punching face 10 and the HEPA filter 3. This punching face 10
Are arranged so as to cover the bottom of the cylindrical portion of the bottom member 6.

Reference numeral 12 denotes a cylindrical fan, which has no housing and has a structure in which air sucked from the suction port 4 is uniformly diffused from the side surface to all directions around the air. The motor 13 for driving the cylindrical fan 12 is
2, the upper surface plate 2a of the casing 2
It is attached to the lower side. The motor 13
May be attached above the upper surface plate 2a of the casing 2, that is, outside the casing 2.

The side plate 2b of the casing 2 and the HEP
A fixed space 14 is formed between the air filter 3 and the A filter 3, and an airflow diffused by the cylindrical fan 12 and passing through the HEPA filter 3 is blown into the space 14. The outlet 5 described above is formed in the lower part of the space 14, and the clean air passing through the space 14 is blown out from the outlet 5.

[1-2. Operation and Effect] Next, the operation of the present embodiment having the above configuration will be described. First, when the cylindrical fan 12 is rotated by driving the motor 13, external air passes through the punching face 10 as shown by the arrow A and is sucked through the suction port 4.
Then, the sucked air is uniformly diffused around by the cylindrical fan 12 and is purified by passing through the HEPA filter 3. Then, as shown by arrow B,
The air is blown out as clean air from the air outlet 5 through a space 14 formed around the HEPA filter 3.

As described above, the air sucked from the suction port 4 is uniformly diffused around by the cylindrical fan 12, and
The uniform contact with the EPA filter 3 reduces the pressure loss in the airflow path and the HEPA filter 3.
Further, the generated noise is reduced, the clean air to be blown out is made uniform, and the power required for the fan is reduced. Further, since the cylindrical fan 12 is housed inside the HEPA filter 3, the size of the FFU 1 itself can be reduced. In general, as shown in FIG. 2, a bell mouth 15 is attached to a suction portion of the cylindrical fan 12.

In the case of an air conditioner, a cooling coil (or heating coil) 16 may be incorporated inside (or outside) the cylindrical fan 12 as shown in FIG.

[2. Second Embodiment] FIG. 4 shows a configuration of an FFU 21 according to a second embodiment of the present invention. In this embodiment, the conventional FFU 81 shown in FIG. 13 is improved by using the HEPA filter 3 and the cylindrical fan 12 shown in the above-described first embodiment. That is, the duct 24 is connected to the casing 23 because the outlet 22 for the clean air is separated.

In the FFU 21 shown in FIG. 4, the punching face 26 attached to the suction port 25 has a curved shape and is configured to be attached to the ceiling plate S. However, the punching face 26 shown in FIG. The configuration may be any.

With such a configuration, the air sucked from the suction port 25 by the rotation of the cylindrical fan 12 makes uniform contact with the HEPA filter 3 by the cylindrical fan 12. Then, after the air is purified by the HEPA filter 3, the air is blown out from the outlet 22 through the duct 24.

Therefore, similarly to the first embodiment, the pressure loss in the air flow path and the HEPA filter 3 is reduced, the generated noise is reduced, the clean air to be blown out is made uniform, and the required power of the fan is reduced. Become. Further, since the cylindrical fan 12 has no housing and the cylindrical fan 12 is arranged inside the HEPA filter 3, F
The size of the FU 21 itself can be reduced.

In this embodiment, similarly to the first embodiment, the motor 13 of the tubular fan 12 may be mounted on the upper surface plate 23a of the casing 23.

[3. Third Embodiment] FIG. 5 shows an FFU 31 according to a third embodiment of the present invention. In the present embodiment, a suction port 33 is provided in an upper portion of the casing 32. That is, the casing 32
The upper surface plate 32a has a donut shape with a center portion opened, and the center portion forms a suction port 33. Also,
The periphery of the suction port 33 is lower than the outer peripheral part, and the upper part of the HEPA filter 3 is attached to this part. Further, the suction port 33 is connected to the bell mouth 15.
Is attached to form a trumpet shape, so that air is easily sucked in smoothly. Further, on the bottom surface of the casing 32, the HEPA filter 3,
A cylindrical fan 12 and a motor 13 are provided.

Further, a space 35 is formed around the HEPA filter 3, and an airflow diffused by the cylindrical fan 12 and passing through the HEPA filter 3 is formed in the space 35.
To be blown out. Also, the casing 32
An air outlet 36 through which an airflow passing through the space 35 is blown out is formed by attaching a curved punching face so as to cover a lower portion of the airbag. Note that the outlet 36 does not necessarily have to be a punching face having a curved shape, and may have a flat shape if it is a perforated plate.

With such a configuration, the upper suction port 33
The air sucked from the air is diffused by the cylindrical fan 12, passes through the HEPA filter 3, becomes clean air, and is blown out from the outlet 36.

Such an FFU 31 is used, for example, in an air cleaning blower unit as shown in FIG. That is, in the clean room in which the floor surface is a free access floor 38 composed of a grating floor or the like, and in which a return space 39 is formed, which is a passage for returning the air passing through the free access floor 38 to the suction port 33 of the FFU 31. The plurality of FFUs 31 are installed on the ceiling. Thereby, after the clean air blown out from each FFU 31 passes through the clean room, it passes through the free access floor 38 and returns to the return space 39.
Through the suction port 33 of each FFU 31.

According to the third embodiment, the same effects as those of the first and second embodiments can be obtained.
In addition, with the configuration as shown in FIG. 6, an efficient air cleaning blower unit can be provided.

[4. Fourth Embodiment] FIG. 7 shows an FFU 41 according to a fourth embodiment of the present invention. In the present embodiment, the HEPA filter 3 described above is used.
The conventional FF shown in FIG.
This is an improvement of U91, and shows a case of a floor-standing FFU41.

As shown in FIG. 7, the FFU 41 is provided with two casings 42 above and below, and in each casing 42, the HEPA filter 3 and the cylindrical fan 12 are arranged. A suction port 43 is formed on the back surface of each of the casings 42. In each casing 42, a space 44 is formed around the HEPA filter 3, and an air outlet 45 is formed in the space 44 on the front side of the casing 42. The outlet 45 is, for example, a general universal outlet. In addition,
A caster may be attached to the lower part of the FFU 41 so as to be movable.

When the two casings 42 are provided in the upper and lower directions, the height of the FFU 41 can be set to about 150 cm. Further, the depth can be about 30 cm and the width can be about 60 cm. In the case of a clean room requiring a certain degree of cleanliness, such as a precision parts factory, a food factory, a hospital, etc., not only two upper and lower units but also two units each for upper, lower, left and right, a total of four units may be used. Also in this case, the FFU 41 has a height of about 150 cm, a depth of about 30 cm, and a width of 120 cm.
Since the size of the FFU 41 can be reduced to about cm, the FFU 41 can have a small power required by the fan, and can sufficiently supply uniform clean air.

In the case of a small household air purifier,
For example, as shown in FIG. 8, only one casing 42 may be provided. Here, FIG. 8A is a side view of the FFU 41, and FIG. 8B is a front view thereof. In this case, FIG.
As shown in (b), clean air is blown from the space 44 on the upper surface and both side surfaces of the casing 42. Also in this case, it is possible to increase the air volume and to reduce the size and weight as compared with a small household purifier currently used.

As described above, according to the present embodiment, the conventional FFU 7 shown in FIG.
As shown in FIG. 7, the housing of each fan 73 is eliminated, and FIG.
As shown in FIG.
2, the size of the FFU 41 itself can be reduced. Further, since the cylindrical fan 12 has no housing, the size and weight can be reduced accordingly. Therefore, even when the caster is attached to the lower part of the casing 42 as described above, it is possible to easily move the caster.

[5. Fifth Embodiment] FIG. 9 shows a configuration example of an air conditioner 51 according to a fifth embodiment of the present invention. In the present embodiment, the above-described HE
Using the PA filter 3 and the cylindrical fan 12, FIG.
This is an improvement of the conventional air conditioner 100 shown in FIG.

In the air conditioner 51 shown in FIG. 9, a cylindrical cooling coil 53 is arranged between the HEPA filter 3 and the cylindrical fan 12 inside the casing 52.
The suction port 54 formed in the lower part of the cylindrical fan 12
The air sucked from the air is uniformly applied to the surface of the cooling coil 53 by the cylindrical fan 12. The air cooled by the cooling coil 53 is H
The air is purified by passing through the EPA filter 3, and passes through the space 55 formed around the HEPA filter 3.
It is blown out from 6.

With the above configuration, FIG.
The air conditioner 51 itself can be made smaller and lighter than the conventional air conditioner 100 shown in FIG. According to the present embodiment, air can be blown in all directions without increasing the size of the device. Further, since the air finally passes through the HEPA filter 3, the cleanliness can be increased.

[6. Sixth Embodiment] FIG. 10 shows a configuration example of an air conditioner 61 according to a sixth embodiment of the present invention. In the present embodiment, the above-described H
Using the EPA filter 3 and the cylindrical fan 12, FIG.
This is an improvement of the conventional air conditioner 111 shown in FIG.

In the air conditioner 61 shown in FIG. 10, the casing 62 is directly attached to the lower surface of the ceiling plate S. Then, similarly to the fifth embodiment, the casing 6
2, a cylindrical cooling coil 63 is arranged between the HEPA filter 3 and the cylindrical fan 12. In addition, a suction port 64 is formed in a lower portion of the cylindrical fan 12, and a curved punching face 65 is attached.

With this configuration, air is sucked from the suction port 64 by the rotation of the cylindrical fan 12. Also,
Air sucked by the cylindrical fan 12 is cooled by the cooling coil 6.
3, the air passes through the HEPA filter 3 and is blown out to the outside through a blow-out port 67 provided around the HEPA filter 3.

With this configuration, the size and weight of the air conditioner 61 itself can be reduced. Further, in the air conditioner 111 shown in FIG. 15B, air can be blown out in only one direction, but in the present embodiment, air can be diffused in all directions.

[7. Other Embodiments] The present invention is not limited to the above embodiments, and the embodiments can be freely changed. Therefore, the present invention also includes other embodiments as exemplified below. Things. That is, in each of the above-described embodiments, the shape of the HEPA filter is cylindrical, but may be rectangular.

The fan is not limited to the cylindrical fan described in the above embodiment, but may be a fan 68 such as an axial fan as shown in FIG.

The position of the fan motor is not limited to the position described above, but can be changed as appropriate. Furthermore, as a blower unit for air cleaning, not only a fan, a HEPA filter, and a cooling coil but also other devices such as a heating coil, a humidifier, and a deodorizing filter may be housed in the casing.
Further, the heat exchanger such as the cooling coil and the heating coil may be arranged outside the fan and the HEPA filter instead of between the fan and the HEPA filter as in the embodiment shown in FIG.

[0058]

As described above, according to the present invention, the fan is arranged inside the cylindrical filter so that the air diffused by the fan is uniformly brought into contact with the surface of the cylindrical filter without passing through the plenum chamber. Therefore, the pressure loss in the airflow path and the cylindrical filter is reduced, the generated noise is reduced, the blown air is made uniform, and the required power of the fan is reduced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a configuration of an FFU 1 according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing another configuration example of the FFU 1 according to the embodiment.

FIG. 3 is a sectional view showing another configuration example of the cylindrical fan 12 according to the embodiment.

FIG. 4 is a longitudinal sectional view showing a configuration of an FFU 21 according to a second embodiment of the present invention.

FIG. 5 is a longitudinal sectional view showing a configuration of an FFU 31 according to a third embodiment of the present invention.

FIG. 6 is a schematic diagram showing a configuration example of a clean room using the FFU 31 according to the embodiment.

FIG. 7 is a side sectional view showing a configuration of an FFU 41 according to a fourth embodiment of the present invention.

FIG. 8 is a diagram showing another configuration example of the FFU 41 according to the embodiment, wherein (a) is a side sectional view and (b) is a front view.

FIG. 9 is a longitudinal sectional view showing a configuration of an air conditioner 51 according to a fifth embodiment of the present invention.

FIG. 10 is a longitudinal sectional view showing a configuration of an air conditioner 61 according to a sixth embodiment of the present invention.

FIG. 11 is a longitudinal sectional view showing a configuration of an FFU according to another embodiment of the present invention.

FIG. 12 is a longitudinal sectional view showing a configuration example of a conventional FFU 71.

FIG. 13 is a longitudinal sectional view showing a configuration example of a conventional FFU 81.

FIG. 14 is a longitudinal sectional view showing a configuration example of a conventional FFU 91.

FIG. 15A is a longitudinal sectional view showing a configuration example of a conventional air conditioner 100, and FIG. 15B is a longitudinal sectional view showing a configuration example of a conventional air conditioner 111.

[Explanation of symbols]

 1, 21, 31, 41 ... FFU 2, 23, 32, 42, 52, 62 ... casing 2a, 23a, 32a ... top plate 2b ... side plate 3 ... HEPA filter 4, 25, 33, 43, 54, 64 ... Suction port 5,22,36,45,56,67 ... Outlet port 6,35 ... Bottom member 10,26,65 ... Punching face 12 ... Cylinder fan 13 ... Motor 14,35,44,55 ... Space 15 ... Bell Mouse 16, 53, 63 Cooling coil 24 Duct 38 Free access floor 39 Return space 51, 61 Air conditioner 68 Fan

Claims (7)

[Claims] A cylindrical filter having a hollow inside and a cylindrical filter disposed inside the cylindrical filter, and air sucked into the inside from one axial end of the cylindrical filter; A fan for diffusing so as to make uniform contact with a mold filter; a suction port configured to house the cylindrical filter and the fan and formed so that external air is sucked into the inside of the cylindrical filter; And a casing having an outlet for blowing out the air that has passed through the cylindrical filter after being diffused to the surroundings by the air purifier. 2. The fan is disposed coaxially with the cylindrical filter, has a hollow cylindrical inside, and diffuses air taken in from one end in the axial direction to the periphery from its side. The blower unit for air cleaning according to claim 1, wherein the blower unit is a cylindrical fan configured to perform the above operation. 3. The casing is mounted on a ceiling plate, wherein the cylindrical filter has a space in a direction perpendicular to an axis of the ceiling plate and a side surface between the casing and the casing. The suction port is formed below the cylindrical filter, and the outlet is formed at a lower end of the space formed between a side surface of the cylindrical filter and the casing. The air purifying blower unit according to claim 1 or 2, wherein: 4. A blower unit for purifying air according to claim 3, wherein a duct communicating with the space in the casing is connected to the casing, and the outlet is formed at an end of the duct. . 5. The casing is attached to a ceiling plate, wherein the cylindrical filter has a space between the casing and a side surface thereof in a direction perpendicular to the ceiling plate. The suction port is formed above the cylindrical filter, and the outlet is formed at a lower end of the space formed between a side surface of the cylindrical filter and the casing. The air purifying blower unit according to claim 1 or 2, wherein: 6. The casing is installed on a floor, wherein the cylindrical filter has a shaft horizontal to the floor and at least a side surface having a space between the casing and the casing. The suction port is formed near one end of the cylindrical filter, and the outlet is formed in a space formed between the cylindrical filter and the casing. An air purifying blower unit according to claim 1. 7. The air purifying blower unit according to claim 1, wherein a heat exchanger is arranged near the fan.