JP2001129339A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the radiation efficiency of the heat generating part in the electric box 32 of an air cleaner 16. SOLUTION: In an air cleaner 16 wherein air cleaning filters 22A, 22B, 22C and a blow fan 20 are provided in a case having an air suction port 18 and air blowoff ports 19A, 19B, 19C, an electric box 32 is provided between one surface not provided with the air blowoff ports 19A, 19B, 19C of the case and a wind passage and a ventilation hole 32B is provided to the boundary surface 32A of the electric box 32 and the wind passage so that a part of the wind from the blow fan 20 flows to cool the electric part in the electric box.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air cleaning device for removing dust particles and bacteria.

[0002]

2. Description of the Related Art In general, an air purifying apparatus includes an air purifying filter (dust collecting filter), a blower fan and an electric box in a case having an air inlet and an air outlet. The cooling of the electric components has been configured by the supply and exhaust of natural ventilation to and from the room using ventilation holes provided in the electrical box.

[0003]

However, in the above-described configuration, the cooling of the electrical components in the electrical box is caused by natural convection, so that the flow of air for radiating the electrical components is insufficient.
There has been a problem that the area of the radiation fins of the electric component must be increased, and the cost of the component increases.

An object of the present invention has been made in view of the above-mentioned circumstances, and an air purifying apparatus which improves the heat radiation efficiency of electric components in an electrical box and reduces component costs by downsizing the components. Is to provide.

[0005]

In order to solve the above problems, the invention according to claim 1 is directed to an air inlet provided on a single surface of a case having a plurality of surfaces and a plurality of surfaces of the case. An air passage connecting the provided air outlet is formed inside the case, and a pre-filter, a blower fan, and an air purifying filter are sequentially provided in the air passage from the air inlet to the air outlet. In the air purifying device, an electric component box having a built-in electric component is provided between the other surface of the case and the air passage, and a part of the wind of the blower fan is provided on a boundary surface between the electric component box and the air passage. It is characterized in that ventilation holes are provided in the electrical box and discharged to cool the electrical components.

According to a second aspect of the present invention, an air passage connecting an air inlet provided on a single surface of a case having many surfaces and air outlets provided on a plurality of surfaces of the case is provided. In the air cleaning device configured inside the case and provided with a pre-filter, a blower fan and an air cleaning filter in order from the air suction port to the air outlet in the air path, the remaining one surface of the case and the An electrical box containing an electric component is provided between the air passages, a ventilation hole is provided on a boundary surface between the other surface of the case and the electrical box, and the electrical box is provided between the air suction port and the pre-filter. It is characterized in that a duct for sucking air inside is connected to cool the electric components.

A third aspect of the present invention is characterized in that a radiation fin is provided along a flow of air from a blower fan at a boundary surface between an electric box and an air path to cool electric components.

The invention according to claim 4 is characterized in that the duct is formed integrally with a member that forms a boundary between the electrical box and the air passage.

The invention according to claim 5 is characterized in that an opening / closing device as closing means is provided between the air suction port and the prefilter.

[0010]

1 to 10 show an embodiment of the present invention.
This will be described with reference to FIG. FIG. 1 is a side sectional view showing an operating room of a hospital to which an embodiment of the air purifying apparatus according to the present invention is applied, and FIG. 2 is a plan view showing the operating room of FIG.

As shown in FIG. 1 and FIG.
Is formed in a rectangular parallelepiped shape by a ceiling surface 11, a floor surface 12, and a wall surface 13. An operating table 24 is provided at the center position of the floor surface 12 in a plan view.

At the center of the ceiling 11 of the operating room 10, a dust collecting filter 14 (eg, HE
PA filter). In addition, the wall 1 surrounding four sides
An air outlet 15 is formed on the floor 12 side at the corners 17A, 17B, 17C, and 17D of the third.

The air after the dust is collected and purified by the dust collecting filter 14 is supplied around the operating table 24 and then flows along the floor 12 toward the air outlet 15. The inside of the operating room 10 is cleaned.

The air (contaminated air) flowing out from the air outlet 15 is discharged into the outside air through another dust collecting filter (not shown), a blowing fan (not shown), or the upstream side of the dust collecting filter 14. It is configured to be guided and circulated.

The ceiling surface 11 is provided with an air cleaning device 1 that assists a dust collecting filter 14 to collect dust in the air.
6 are installed. These air purifiers 16
Is disposed at a position where the air is easily deviated from the flow A (FIG. 1) of the air supplied from the dust collecting filter 14 and heading toward the air outlet 15.

For example, in this embodiment, the respective air cleaning devices 16 are arranged on the ceiling surface 11 outside the dust collecting filter 14 as shown in FIG.

Each air cleaning device 16 draws air from below, and moves in three directions except for the side facing the wall 13 in FIG.
As shown by the arrow B, air (clean air) is blown out almost horizontally. The air blown out from the air cleaning device 16 joins the flow of air (arrow A) flowing from the dust filter 14 to the air outlet 15 and flows out of the room from the air outlet 15.

As described above, the air suction port 18 for sucking air into the air cleaning device 16 is provided on the bottom surface of the case 17 of the air cleaning device 16 as shown in FIGS.

The air outlets 19A, 19B and 19C for blowing air (clean air) from the air purifier 16 are:
In the case 17, the case 17 is individually opened on three adjacent side surfaces (surfaces that intersect with the bottom surface) that are different from each other by approximately 90 degrees in plan view.
The other side of the case 17 faces the wall 13, and the air cleaning device 16 is installed on the ceiling 11.

As shown in FIG.
As described above, the air inlet 18 and the air outlet 19
Case 1 in which an air path connecting A, 19B, and 19C is formed
7, an opening / closing device 35 as a closing means provided on the back surface of the air suction port 18 and a pre-filter (not shown);
Blower fan 20, electrodes 21A, 21B, 21C, air cleaning filters (for example, HEPA filters) 22A,
2B and 22C are arranged.

The bottom surface of the case 17 is constituted by a decorative plate 25 (FIG. 3) fitted and fixed to the lower part of the side surface of the case 17.
The air inlet 18 is opened at the center of the decorative plate 25 (FIG. 4).

The blower fan 20 is a centrifugal blower type blower (such as a turbo fan), and the suction side is installed in the case 17 at a position facing the air suction port 18.

When the blower fan 20 is rotated by the fan motor 26, the air in the operating room 10 is sucked from below the air cleaning device 16 through the air suction port 18, and relatively large dust (cotton brush) is filtered by the pre-filter. This)
Is removed, air flows a, b, and c (FIG. 5) are spirally formed toward each of the air cleaning filters 22A, 22B, and 22C facing the blowing side of the blower fan 20, and the air cleaning filter 22A is formed. , 22B, and 22C, and then the operating room 10 through the air outlets 19A, 19B, and 19C.
Air is blown out inside.

The electrodes 21a, 21b, and 21c are connected to the blower fan 20 in the air path and the air purifying filters 22A, 22B,
2C, the air purifying filter 22A,
In the air flows a, b, and c flowing to the air filters 22B and 22C, the air filters are provided near boundaries of the respective air cleaning filters.

As shown in FIG. 8, the electrodes 21A, 21B,
21C is configured by alternately arranging wire-shaped (or needle-shaped) positive electrodes 28 and plate-shaped negative electrodes 29 on a square frame 27.

As shown in FIG. 9, the electrodes 21A, 21B,
By applying a DC voltage of several kv (2 kv to 9 kv) to 21C, positive ions are emitted from the positive electrode 28,
Bacteria such as dust particles 30 and pathogenic bacteria 31 in the air passing near these electrodes 21A, 21B, 21C are positively charged.

The charged dust particles 30 and the pathogenic bacteria 3
1, and uncharged pathogenic bacteria 31 adhering to the charged dust particles 30 ride on the air flows a, b, and c, reach the air cleaning filters 22A, 22B, and 22C and are collected.

Air cleaning filters 22A, 22B, 22C
Are detachably mounted inside the side surface of the case 17 so as to face the air outlets 19A, 19B, and 19C, respectively.

Air cleaning filters 22A, 22B, 22C
Is formed into a corrugated plate by adhering a drug containing chlorhexidine gluconate to an HEPA filter made of, for example, glass fiber. This air purifying filter 22
If the sizes of A, 22B and 22C are made common, only one kind of replacement part is required, and the serviceability can be improved.

Generally, bacteria (viruses (0.006-
0.06 μm), bacteria (0.3-30 μm), Staphylococcus aureus (0.8-1.0 μm)) 10-15 μm
m of dust and pollen of 10 to 100 μm, etc., and float in the air.
(capable of collecting particles of μm).

As shown in FIG. 5, on the side surface of the case 17, an electrical component box 32 containing an electrical component 32G is provided between one surface on which nothing is provided and the air passage. The electrical component box 32 has a substantially rectangular parallelepiped shape, and a part on the air path side expands in an arc shape to increase the storage capacity of the electrical component 32G.

A plurality of ventilation holes 32B are provided on a surface (hereinafter, referred to as a boundary surface 32A) where the electrical box 32 and the air path are in contact with each other so that a part of the wind of the blower fan 20 flows. The cooling of 32G is performed.

The ventilation holes 32B are formed so that the upstream side with respect to the flow of air from the blower fan 20 is a suction port to the electrical box 32 and the downstream side is an air outlet.

Further, radiation fins 32C are provided on the boundary surface 32A along the flow of the air from the blower fan 20 so that the electric components 32G
Can also be cooled.

As another embodiment, as shown in FIG. 10, an electric box 32 containing an electric component 32G is provided between the air passage and one surface where the air outlets 19A, 19B and 19C are not provided. On one surface (hereinafter referred to as a boundary surface 32D) on which the air outlets 19A, 19B, and 19C are not provided, a ventilation hole 32E that connects to the electrical box 32 is provided. A method is also conceivable in which a duct 32F for sucking air in the electrical component box 32 is connected to cool the electrical component 32G.

In this case, the negative pressure near the air suction port 18 by the blower fan 20 causes the boundary surface 32
The air sucked from the ventilation holes 32E of the
Is cooled, passed through the duct 32F, and guided to the air suction port 18.

For this reason, when the blower fan 20 is operated, the electric components 32G can be cooled by forced ventilation, and when the blower fan 20 is stopped, the electric component 32G passes through the electrical box 32 from the air suction port 18 to the ventilation hole 32E. The electrical component 32G can be cooled by natural convection.

Also in this embodiment, the boundary surface 32A
It is also conceivable to provide a radiating fin 32C along the flow of the air from the blower fan to cool the electrical component 32G.

The duct 32F is integrally formed with a member forming a boundary surface 32A between the electrical box 32 and the air passage, thereby preventing air leakage in the middle of the duct 32F.

The above-mentioned opening / closing device 35 is installed inside the decorative plate 25 corresponding to the air suction port 18 in the case 17 as shown in FIGS. 3 and 4, and the air suction port 18 can be opened and closed. .

As shown in FIGS. 6 and 7, the opening / closing device 35 has a large number of blades 37 arranged inside a rectangular frame 36, and each blade 37 is connected to the frame 36 via a pivot 38. The pins 39 of each blade 37 are loosely fitted into holes 41 of the operation plate 40.

On the other hand, inside the decorative plate 25, for example, a stepping motor 42 with a built-in reduction gear is installed, and an arm (not shown) on which an operation pin 43 is implanted is fixed to a shaft of the stepping motor 42. , The operation pin 43
It is loosely fitted in a long hole 45 of the intermediate plate 44 fixed to the operation plate 40.

Accordingly, when the stepping motor 42 rotates in a predetermined range in either the forward or reverse direction, the operation plate 40 is moved through the operation pin 43 and the intermediate plate 44.
Reciprocates in the direction of arrow C in FIG. 6, whereby each blade 37 rotates about a pivot 38 within a predetermined range,
The opening / closing device 35 can open and close the air suction port 18.

The opening / closing device 35 opens the air suction port 18 during the rotation operation of the blower fan 20 and
Is configured to close the air suction port 18 during the stop of the operation.

Next, the operation of the air cleaning device 16 will be described. When air (clean air) is being blown out of the dust collection filter 14 of the operating room 10, the opening / closing device 35 of the air cleaning device 16 opens the air suction port 18, and the blowing fan 2
When 0 rotates, the electrodes 21A, 21B and 21C operate, and the air cleaning filters 22A, 22B and 22C purify the air.

Therefore, the air staying in the operating room 10 is sucked from the air suction port 18 of the air cleaning device 16 and the dust particles 30 and the pathogenic bacteria 31 in the air are sucked by the electrodes 21A, 21B and 21C. Dust particles 3 which are charged and charged by air cleaning filters 22A, 22B, 22C
0 and pathogenic bacteria 31 are collected.

The air cleaning filter 14 in the operating room 10
When the clean air is not being blown out from the air purifier, the opening / closing device 35 of the air purifier 16 closes the air suction port 18, the blower fan 20 stops, the electrodes 21A, 21B, 21C are stopped, and the dust in the case 17 is removed from the air. It is prevented from falling into the operating room 10 from the suction port 18.

As described above, according to the above-described embodiment, the air purifying device 1 is located at a position where the air stays without riding on the air flow A from the dust collecting filter 14 to the air outlet 15.
6, the air purifier 16 collects dust particles 30 and pathogenic bacteria 31 existing in the staying air to purify the air, so that the air cleanliness of the entire operation room 10 is reduced. Always good.

In the air cleaning device 16, when the blowing fan 20 is operated, the electrodes 21 A, 21 B, 21 C and the air cleaning filters 22 A, 22 B, 22 C operate, and the electrodes 21 A, 21 B, 21 C are operated by the blowing fan 20. The dust particles 30 and the pathogenic bacteria 31 in the introduced air are charged, and the air cleaning filters 22A, 22B and 22C collect the charged dust particles 30 and the pathogenic bacteria 31 and the like, so that the dust is collected. Efficiency can be improved.

In the air cleaning device 16, when the blower fan 20 is stopped, the opening / closing device 35 closes the air suction port 18, so that dust in the air cleaning device 16 can be prevented from leaking out of the case 17. .

Further, in the air cleaning device 16, when the blower fan 20 is operated, the boundary surface 3 between the electrical box 32 and the air path is
A plurality of ventilation holes 32B are provided in 2A so that a part of the wind of the blower fan 20 flows, and the wind cools the electrical components 32G in the electrical box 32.
The reliability performance of G can be improved.

In the above embodiment, the opening / closing device 35 is provided at a position opposed to the air suction port 18.
This opening / closing device 35 has air outlets 19A, 19B, 19C.
May be provided at positions facing each other. In addition, the opening and closing device 35
Alternatively, the sheet wound around the roller may be pulled out from the roller to close the air suction port 18, and the sheet may be rewound to the roller to open the air suction port 18.

Although the present invention has been described based on the above embodiments, the present invention is not limited to these embodiments. For example, in the above embodiment, the case of a hospital operating room is described as a clean room, but a clean room for manufacturing semiconductors, recording media, and the like may be used to prevent mold.

In the above embodiment, the case where the air purifying device is mounted on the ceiling has been described. However, the present invention is not limited to this, and the air purifying device may be configured as a floor-standing type having an appropriate height. At this time, an air inlet may be provided on the top surface of the air cleaning device.

Although the air outlet is formed on three surfaces, the air outlet is not limited to this, and may be formed on four surfaces (square). In the case where the case is polygonal (pentagon or more), The number of air outlets may be increased correspondingly. At this time, the storage position of the electrical box 32 may be changed to a position below the fan motor or the back of the decorative panel.

[0056]

As described above, according to the air purifying apparatus of the present invention, the air purifying apparatus is provided with the air purifying filter arranged to correspond to the air outlet in the case and collecting dust in the air. An electric box is provided between the air passage and one surface where the air outlet is not provided, and a ventilation hole is provided at a boundary surface between the electric box and the air passage so that the flow of air from the blower fan is divided. Since the electric components are cooled, the reliability performance of the electric components in the electric component box can be improved.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing an operating room to which an embodiment of the present invention is applied.

FIG. 2 is a plan view showing an operating room.

FIG. 3 is a side view showing the air cleaning device.

4 is a view of the air cleaning device of FIG.

FIG. 5 is a view in which a decorative plate is omitted in FIG. 4;

FIG. 6 is a front view showing the opening / closing device.

FIG. 7 is a side view showing the opening / closing device.

FIG. 8 is a perspective view showing an electrode.

FIG. 9 is a diagram showing the principle of an electrode.

FIG. 10 is a view of another embodiment in which a decorative plate is omitted in FIG.

[Explanation of symbols]

 Reference Signs List 16 air purifier 17 case 18 air inlet 19A, 19B, 19C air outlet 20 blower fan 22A, 22B, 22C air purifier filter 30 dust particles 32 electrical box 35 switchgear

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tatsuo Ikutam 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Toshio Nakayama 2-5-2 Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd. F-term (reference) 4D058 JA14 KC02 QA01 QA11 QA19 QA21 UA03 UA05 UA25

Claims (5)

[Claims] An air path connecting an air inlet provided on a single surface of a case having a plurality of surfaces and air outlets provided on a plurality of surfaces of the case is formed inside the case. And an air purifier provided with a pre-filter, a blower fan and an air purifying filter in order from the air suction port to the air outlet in the air path, wherein an electric power is supplied between the other surface of the case and the air path. Providing an electrical box containing components therein, providing a ventilation hole for taking in and discharging a part of the wind of the blower fan into the electrical box at a boundary surface between the electrical box and the air path, and cooling the electrical component. Characterized air purifier. 2. An air path connecting an air inlet provided on a single surface of a case having a plurality of surfaces and air outlets provided on a plurality of surfaces of the case is formed inside the case. And an air purifier provided with a pre-filter, a blower fan and an air purifying filter in order from the air suction port to the air outlet in the air path, wherein an electric power is supplied between the other surface of the case and the air path. An electric box containing components is provided, a ventilation hole is provided on a boundary surface between the remaining surface of the case and the electric box, and a duct for sucking air in the electric box between the air suction port and the pre-filter. An air purifying apparatus for cooling the electric parts. 3. The cooling device according to claim 1, further comprising a cooling fin provided on a boundary surface between the electrical box and the air passage along a flow of air from the blower fan.
An air purifying apparatus according to item 1. 4. The air cleaning apparatus according to claim 2, wherein the duct is formed integrally with a member that forms the boundary between the electrical box and the air passage. 5. The air purifying apparatus according to claim 1, wherein an opening / closing device as closing means is provided between the air suction port and the pre-filter.