JP2018159521A - Thin duct panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress dust from being accumulated at a corner part between a surface and floor surface of a thin duct panel.SOLUTION: A thin duct panel 100 includes a hollow plate-like ventilation part 1 provided in a room in a suspended manner in the middle in the vertical direction, and a hollow plate-like suction part 2 continuously provided below the ventilation part 1. The suction part 2 has a suction surface having many suction ports arranged planarly on a front side. The suction surface is inclined so as to be gradually closer to a rear plate side of the thin duct panel 100 downwardly. The suction part 2 preferably has a concave surface 41 provided at a corner part between a surface and a floor surface, and formed into an R shape in a side view.SELECTED DRAWING: Figure 1

Description

  The present invention is an air cleaning apparatus for removing microorganisms and dust in a clean room, an aseptic room, an operating room, etc., so as to cover the wall or to be separated in a partition shape at a position away from the wall so as to perform air intake from the room. In particular, the present invention relates to a thin duct panel having a reduced thickness in order to secure an indoor space.

  Conventionally, in a clean room, a sterile room, etc., especially when an air inlet for sucking indoor air cannot be provided on the floor surface, an air inlet is provided on the side wall of the room, and the air sucked from the air inlet is passed through a duct. On the inner wall of the double ceiling, and then the so-called turbulent air purifier that returns to the room while removing dust etc. by the fan filter unit etc. installed on the ceiling A so-called horizontal laminar air purifier is provided in which air supply ports are provided on opposite side walls.

  Such a turbulent flow type or horizontal laminar flow type air purifier is additionally installed in a room not equipped with an air purifier by standing a hollow plate-like duct panel instead of having a double side wall structure. (For example, refer to Patent Document 1).

Japanese Patent No. 5802855

However, such a duct panel is easy to install, but has the problem that the room becomes narrow, and if it is too thin, the pressure loss increases, the flow rate decreases, and turbulence tends to occur. Dust accumulates at the corners between the duct panel and the floor surface below, and this may cause bacterial growth.
The present invention has been made in view of the above problems, and an object of the present invention is to provide a thin duct panel capable of suppressing dust from accumulating at corners between the surface of the duct panel and the floor surface.

  The invention made in order to solve the above-mentioned problems is a thin duct panel standing upright indoors, a hollow plate-like air supply part provided in the middle in the vertical direction, and below the air supply part A hollow plate-like air intake portion provided continuously, and the surface of the air intake portion has an air intake surface having a large number of air inlets arranged in a plane, and the air intake surface becomes thinner as it goes downward. It is characterized in that it is inclined to approach the back plate side of the duct panel.

Thus, the thin duct panel according to the present invention is such that the intake surface provided with the intake port is inclined so as to approach the back plate side of the thin duct panel as it goes downward, so that the surface of the air supply section Since dust that collides with and falls on the periphery of the inlet of the air intake surface falls to the near side of the lower edge of the air intake surface, the thin duct panel and the corner of the floor surface Capture of dust can be suppressed.
Further, since the air intake surface faces the floor surface, the dust that has fallen on the floor surface slightly away from the corner can be sucked from the air intake port.
Further, since the air intake surface faces the floor surface, the air in the lower part of the room containing a lot of dust can be guided to the air intake along the floor surface, and the indoor dust can be more efficiently removed.
Moreover, since the turbulent flow generated in the vicinity of the intake surface can be suppressed by inclining the intake surface, it is also possible to suppress the accumulation of dust in the vicinity of the intake surface.

  It is preferable that the corner between the surface of the air intake portion and the floor has a concave curved surface provided in R in a side view. By doing so, the air in the vicinity of the floor surface can be taken into the intake port along the concave curved surface, and the dust falling to the front of the duct panel can be efficiently collected.

  As described above, according to the thin duct panel of the present invention, it is possible to suppress the accumulation of dust at the corners between the surface and the floor surface.

It is the perspective view which showed the thin duct panel which concerns on 1st Embodiment of this invention. It is a front view of the thin duct panel shown in FIG. It is a rear view of the thin duct panel shown in FIG. It is a side view of the thin duct panel shown in FIG. It is a top view of the thin duct panel shown in FIG. It is a bottom view of the thin duct panel shown in FIG. It is the II sectional view taken on the line in FIG. It is the (a) principal part front view and (b) principal part longitudinal cross-sectional view which show the intake part shown in FIG. It is explanatory drawing which showed typically a mode that dust fell on the front surface of the thin duct panel of FIG. It is the front view which showed the thin duct panel which concerns on 2nd Embodiment of this invention. It is a side view of the thin duct panel shown in FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. The present invention is not limited to the following embodiment.

(First embodiment)
FIG. 1 shows a thin duct panel 100 according to a first embodiment of the present invention. The thin duct panel 100 is a duct that extends from a fan filter unit (not shown) behind the ceiling after sucking air from the room in an air cleaning device that removes dust, bacteria, and the like in the air in a clean room, an aseptic room, and the like. Used to recirculate air to B (see FIG. 4).
The thin duct panel 100 mainly includes an air supply unit 1, an air intake unit 2, and a fan unit 3, and further includes an R frame 4 provided between the air intake unit 2 and the floor surface, and a coated steel plate is made of sheet metal. It is formed by appropriately combining processed members. The thin duct panel 100 is erected so that the back plate side is attached to the side wall of the room to be installed.

  The air supply unit 1 is formed in a flat rectangular parallelepiped hollow box shape that opens up and down, has a back surface side, and has an air supply unit main body 11 having a substantially U-shaped horizontal section, and a front opening of the air supply unit main body 11. It has the air supply part surface board 12 which obstruct | occludes. The air supply unit body 11 includes a back plate 13 (see FIG. 3) and a pair of left and right side plates 14 (see FIG. 4). The back plate 13 is provided with six wall surface fixing holes 13a penetrating in the thickness direction. It has been. The side plate 14 has an end portion folded inward to form an edge portion 14a (see FIGS. 1 and 2). The air supply part surface plate 12 is detachably fixed to the side plate 14 by a fitting structure (not shown). The surface of the air supply part 1 is constituted by the surface 12a of the air supply part surface plate 12 and the surface of the edge part 14a.

  As shown in FIG. 4, the intake section 2 includes an intake section body 21 having a substantially U-shaped horizontal cross section on the back side (right side in FIG. 4), a suction panel 22 that closes the opening on the front side of the intake section body 21, And a pre-filter 26 provided inside. The pre-filter 26 is supported by a middle frame 27 having a square shape in front view. The prefilter 26 partitions the upstream side and the downstream side of the air flow in the internal space of the intake section 2 together with the inner frame 27. The air intake section main body 21 includes a back plate 23, a pair of left and right side plates 24, and a bottom plate 25 (see FIG. 7). The side plates 24 and the bottom plate 25 have their ends folded back inwardly, and edge portions 24a and 25a are formed. Is formed. The back plate 23 of the intake section main body 21 is provided with four wall surface fixing holes 13a (see FIG. 3) penetrating in the thickness direction.

As shown in FIG. 8A, the suction panel 22 has a fixed portion 22a that is flush with the air-feeding portion surface plate 12, and a lower portion (downward in FIG. 8A) that is continuous with the fixed portion 22a. The intake surface 29 is provided. As shown in FIG. 8B, the intake surface 29 has an intake surface 29 that is inclined so as to approach the back plate 23 of the thin duct panel 100 as it goes downward (below in FIG. 8B). Yes. As shown in FIG. 8A, the intake surface 29 is provided with a large number of intake ports 29a each having a long hole in the horizontal direction in a staggered manner over substantially the entire surface except for a part of the periphery. . The suction panel 22 is pivotally supported by the edge portion 25a of the intake portion main body 21 on both sides of the lower side 22d, and as shown by a two-dot chain line in FIG. 8B, the upper side 22c is on the near side (left side in FIG. 8B). It is opened and closed as if it was knocked down. The suction panel 22 is fixed in the closed state by engaging the pair of left and right latch fittings 5a and 5a of the fixing portion 22a with the pair of left and right latch receiving fittings 5b and 5b provided on the upper side 27a of the middle frame 27. .
The surface 2a of the intake portion 2 is configured by the surface of the suction panel 22 and the edges 24a and 25a.

  Further, the suction panel 22 is connected to the edge portion 25a of the bottom plate 25 by a dowel pin 9 and is pivotally supported by the bottom plate 25. By removing the dowel pin 9, as shown in FIG. It can be removed from the main body 21 in such a manner as to be extracted.

  As shown in FIG. 8B, the pre-filter 26 is detachably attached to a fitting groove 27c provided on the upper side 27a of the middle frame 27 and a fitting groove 27d provided on the lower side 27b. It is attached. The pre-filter 26 is attached to the middle frame 27 in a state where the rear space 28 is inclined so that the front-rear width becomes narrower toward the lower side.

  As shown in FIG. 4, the R frame 4 is provided between the intake portion 2 and the floor surface A and supports the thin duct panel 100. The R frame 4 includes a concave curved surface 41 provided on the front side (left side in FIG. 4) on the R side view. The concave curved surface 41 is provided so that the tangent direction at the lower edge approaches the floor surface A and the tangential direction at the upper edge approaches the intake surface 29 in a side view.

  As shown in FIG. 4, the fan unit 3 has a surface 31 protruding forward (to the left in FIG. 4) and is thicker than the air intake unit 2. A fan (not shown) is provided. The fan unit 3 is coupled to the duct B through the duct connection ports 31a and 31a. The fan is a sirocco fan that sucks air in the internal space of the air supply unit 1 and sends it from a duct connection port 31a, 31a provided on the surface 31 to a duct B connected to a fan filter unit (not shown). .

Next, the usage method of the thin duct panel 100, and the effect | action and effect by each structure are demonstrated.
When the thin duct panel 100 is attached to the wall of a mounted room such as a clean room or a sterile room, the thin air supply panel 12 and the suction panel 22 are removed and carried into the room through the wall fixing hole 13a. Attach to the wall with anchor bolts (not shown). At this time, the fan unit 3 is disposed in the ceiling space C. Then, the air supply part surface plate 12 and the suction panel 22 are attached, and the duct connection port 31a is connected to the duct B.

  When an air purifying apparatus including the thin duct panel 100 and a fan filter unit (not shown) is operated, a fan built in these devices rotates and sucks air inside the air supply unit 1 upward. Along with this, the air inside the rear space 28 of the intake section 2 is sucked into the air supply section 1, and the indoor air is sucked into the rear space 28 via the prefilter 26 and the intake port 29a.

In the conventional thin duct panel 90, as shown in FIG. 9A, most of the dust P that collides with the peripheral portion of the intake surface 91 and the intake port 91a and falls is between the thin duct panel 90 and the floor surface A. Since it falls and accumulates at the corners in the middle, there are concerns about the decrease in cleanliness of the room and the propagation of bacteria.
On the other hand, in the thin duct panel 100 of the present embodiment, as shown in FIG. 9B, the intake surface 29 is inclined so that the lower side 22d enters the back side (right side of FIG. 9B). The dust P falling by colliding with the surface 12a of the air supply surface 12 and the dust P falling by colliding with the peripheral portion of the intake port 29a of the intake surface 29 fall in the shape of the concave curved surface 41. It is possible to suppress the dust P from being captured at the corner between 100 and the floor surface A.

And in the thin duct panel 100, as shown in FIG.9 (b), the air inhaled from the inlet 29a is attracted | sucked from the floor surface A side. As a result, the air supplied by the downflow from the fan filter unit on the ceiling has a floor surface side as compared with the thin duct panel 90 shown in FIG. Since the air is sucked into the intake port 29a so as to bypass, an air flow close to a vertical laminar flow can be formed in the room. Therefore, the flow of air that collides with the air supply unit from the ceiling is reduced, so that dust falling along the air supply unit can be reduced. Further, the rear space 28 (see FIG. 8 (b)) of the air intake portion 2 has a smaller width in the front-rear direction toward the lower side, so that the air flow becomes faster, thereby causing dust to fall to the front of the air intake port 29a. And dust that soars from the floor surface A can be sucked more effectively. Further, since the intake surface 29 is inclined in this way, turbulent flow generated in the vicinity of the intake surface 29 is suppressed as compared with a conventional duct panel in which the intake surface is not inclined. It is possible to suppress the accumulation of dust on the floor surface.
In addition, by inclining the intake surface 29 so as to enter the back side in this way, the lower part of the thin duct panel 100 becomes thinner, the space of the floor surface A is secured, and the human foot collides. Can be suppressed. Moreover, it is not necessary to make the thickness of the air supply unit 1 unnecessarily thin, and a sufficient flow path can be secured.

  In addition, since the concave curved surface 41 is provided at the corner between the floor surface A and the thin duct panel 100, a crane wing-like continuous surface is formed by the intake surface 29 and the concave curved surface 41. The air can be widely taken into the intake port 29a by the concave curved surface 41, and dust can be effectively prevented from collecting in front of the thin duct panel 100.

(Second Embodiment)
10 and 11 show a thin duct panel 200 according to the second embodiment of the present invention. In the first embodiment, the fan unit 3 is disposed in the space behind the ceiling, whereas in the thin duct panel 200 of the second embodiment, the fan unit 203 is disposed indoors and directly receives the cleaned air. It is configured to supply air into the room and is used for rooms where the space is small and a double ceiling cannot be formed.
In the thin duct panel 200, members common to the thin duct panel 100 are denoted by the same reference numerals and description thereof is omitted.

The fan unit 203 includes a blowout louver 231a on a surface 231 provided so as to protrude forward (leftward in FIG. 11), and includes a fan 232 and a HEPA filter 233 inside. The fan unit 203 is installed so that the top wall 234 contacts the ceiling of the room.
The thin duct panel 200 can supply air directly into the room through the blowout louver 231a after the air sucked by the fan 232 is removed by the HEPA filter 233.

  As mentioned above, the thin duct panel of this invention is not restricted to said embodiment, For example, it is not necessary to provide a fan part and R mount. The air inlet may be circular or other shapes instead of a long hole. In addition, the thin duct panel of the present invention is not installed on the wall surface, but can be provided in a partitioning manner at an intermediate position away from the wall of the room.

100,200 Thin Duct Panel 1 Air Supply Part 2 Air Intake Part 2a Front Part 23 of the Intake Part Back Plate 29 Intake Face 41 Concave Curve

The invention made to solve the above problems is a thin duct panel standing in a clean room, a sterile room or an operating room , and a hollow plate-shaped air supply part provided in the middle in the vertical direction; A hollow plate-like air intake portion provided continuously below the air supply portion, and the surface of the air intake portion has an air intake surface having a large number of air inlets arranged in a plane, and the air intake surface are we are inclined so as to approach the back plate side of the thin duct panel as directed downward.

And the thin duct panel of this invention has the concave curved surface provided in R by the side view in the corner part between the surface of the said air intake part, and a floor surface on the outer side of the said air intake surface, and the downward direction. Features. By doing so, the air in the vicinity of the floor surface can be taken into the intake port along the concave curved surface, and the dust falling to the front of the duct panel can be efficiently collected.

Claims (2)

A thin duct panel standing indoors,
A hollow plate-like air supply section provided in the middle in the vertical direction;
A hollow plate-like air intake section provided continuously below the air supply section,
The intake section has an intake surface having a large number of intake ports arranged in a plane on the front side,
The thin duct panel is characterized in that the intake surface is inclined so as to approach the back plate side of the thin duct panel as it goes downward.   The thin duct panel according to claim 1, wherein the thin duct panel has a concave curved surface provided in R in a side view at a corner between the surface of the air intake and the floor surface.

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