JPH0545860B2 - - Google Patents

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention is applicable to air flow in specific rooms with fixed lengths, widths, and heights, such as laboratories, hospitals, pharmaceutical factories, food factories, or other factories. The present invention relates to a uniformly distributed air outlet device used in constructing a clean room to ensure an optimal sterile environment such as temperature. (Prior art) Conventionally, this type of air outlet device has a first
As shown in Figures 3 to 3, a filter mounting frame 3 is mounted on the inner circumferential surface of a lower part of a chamber 2 that is approximately cubic in shape and has a duct connection collar 1 on the upper part of the side surface and is open only on the lower side. The ultra-high performance filter 4 is fixed to the filter mounting frame 3 with filter mounting bolts 5 and filter mounting brackets 6, and the chamber 2 has an inverted truncated pyramid shape with ventilation holes 31 formed on the entire surface of the lower surface of the chamber 2. A configuration in which a dish-shaped face panel 14 is arranged and the peripheral edge of the face panel 14 is fixed to the lower open edge of the chamber 2 (hereinafter referred to as a first conventional example) is known. When compared with the present invention, this first conventional example has a partition plate 8, an orifice 11 provided in the partition plate 8, numerous small ventilation holes 13 provided around the orifice 11 in the partition plate 8, and a face panel 14. Blind spot 1
7, 18, the diffusion panel 27, etc., did not have all the functions performed by them. As is clear from the experimental results described below, the air outlet device of the first conventional example described above has poor airflow distribution and temperature distribution, and in particular, the wind speed in the area directly below the outlet and in the rebound area, that is, the entire indoor living area, is 0.2
m/s or less, and it was not possible to obtain a state in which the indoor temperature distribution was averaged over the entire area. In addition, a configuration in which a partition plate, an orifice, and a diffusion panel are added to the first conventional example (Utility Model 61-
13244) (hereinafter referred to as the second conventional example) is also provided. However, when compared with the present invention, this second conventional example does not have the countless small ventilation holes 13 formed around the orifice in the partition plate and the blind spots 17 and 18 provided in the face panel 14. There is an undesirable defect in that the part of a high-performance filter that corresponds to the orifice and the part of the partition plate that corresponds to the orifice are contaminated in a very different way. There were deficiencies such as the size and shape of the room was not set to match, and it did not fit in with the specific room mentioned above. [Problems to be Solved by the Invention] The present invention provides a system in which the wind speed directly below the air outlet and the rebound area, that is, the entire indoor living area, is 0.2 m/s or less, and the temperature distribution in the room is averaged and stable over the entire area. to ensure that the entire high-performance filter is dirty on average, and to make it easy to set the strength of the airflow discharged sideways to suit the size and shape of the room. It is an object of the present invention to provide a novel uniform distribution type air outlet device that achieves the above-mentioned results. [Means for Solving the Problems] In order to achieve the above object, the uniform distribution type air outlet device according to the present invention is used in a specific uniform room with fixed length, width, and height. , constitutes a box-shaped chamber 2 with a duct connection collar 1 at the upper part and an open bottom surface only, and a high-performance filter 4 is housed in the middle height part of the chamber 2, and the lower surface of the chamber 2 A partition plate 8 is installed to divide the inside of the chamber 2 into a pre-cleaning chamber 9 and a post-cleaning chamber 10, and an orifice 11 is provided in the center of the partition plate 8. A dish-shaped face panel 14 is provided with numerous small ventilation holes at locations approximately the same size as the outlet corresponding to the outlet, and has an inverted truncated pyramid shape on the lower surface of the chamber 2.
The peripheral edge of the face panel 14 is fixed to the lower opening edge of the chamber 2 by placing a The bottom wall 20 of the face panel 14 has countless small left-facing ventilation holes 21, right-facing ventilation holes 22, forward-facing ventilation holes 23, rear-facing ventilation holes 24, and downward-facing ventilation holes 2.
5, a diffusion panel 27 having a diameter slightly larger than the orifice is installed in a rectifying chamber 26 surrounded by a face panel 14 and a partition plate 8, and is horizontally adjustable in vertical position and concentric with the orifice 11. It is something. [Embodiment] The embodiment of the present invention shown in the figure is a box-shaped chamber 2 with a collar 1 for connecting a duct (not shown) at the upper side of the chamber 2, which is open only at its lower side, at an intermediate height. A filter mounting frame 3 is provided around the circumferential surface, an ultra-high performance filter 4 is fixed to this filter mounting frame 3 with filter mounting bolts 5 and filter mounting brackets 6, and a partition plate 8 is stretched on the lower surface of the chamber 2. The chamber 2 is divided into a pre-cleaning chamber 9 and a post-cleaning chamber 10, and an orifice 11 is provided in the center of the partition plate 8. Numerous small ventilation holes 13 are formed at locations approximately the same size as the outlet side, and a dish-shaped face panel 14 having an upside-down truncated pyramid shape is arranged on the lower surface of the chamber 2. 14 is fixed to the lower opening edge of the chamber 2, and the left and right peripheral walls 15 of this face panel 14 are
There are countless small left-facing ventilation holes 21 and right-facing holes 19 on the front and rear peripheral walls 16, excluding the upper blind area 17 and lower blind area 18, and on the entire surface of the bottom wall 20 of the same face panel 14. Air outlet 22, forward air outlet 23, backward air outlet 24,
Open the downward ventilation hole 25, and then open the face panel 1.
A disc-shaped diffusion panel 27 whose diameter is slightly larger than the orifice 11 is placed horizontally into the air conditioning chamber 26 surrounded by the partition plate 8 and the partition plate 8 . The diffusion panel 27 is fixed in an upright state and the upper end of the hanging bolt 28 is screwed into the nut 29 of the bridge member 30 stretched in the orifice 11.
can be vertically adjusted in the air conditioning chamber 26. In the figure, 32 is a hanging fixture, 33 is a face panel frame, 34 is a face panel mounting screw, and 35 is an adjustment hole plug. In addition, the above-mentioned ultra-high performance filter 4 is made of glass fiber material folded into pleats and sandwiched between corrugated separators, which is housed in a frame and sealed to prevent leakage, and its performance meets U.S. standards. When measured using the basic DOP method, it has a high dust collection efficiency of 99.97% or more for 0.3 μm particles. [Operation] Next, test data on airflow distribution and temperature distribution of the outlet device of the present application (hereinafter referred to as improved type) and the outlet device of the first conventional example (hereinafter referred to as conventional type) will be described. In addition, for this test, the opening direction of the holes is determined according to the table below, and the opening range of the left and right ventilation holes 21 and 22 is approximately 80% wider than the opening range of the front and rear ventilation holes 23 and 24. .

〔Effect of the invention〕

Since the uniform distribution type air outlet device according to the present invention has the above-described configuration, it can be used in a specific uniform room with fixed vertical and horizontal lengths and heights, for example, a research room with extremely good airflow distribution and temperature distribution. Of course, it is extremely effective in making it possible to construct a clean room to ensure an optimal sterile environment such as air flow and temperature in rooms, hospitals, pharmaceutical factories, food factories, and other factories. Numerous small ventilation holes 13 around the orifice in the board, blind spots 17 and 18 in the face panel 14
Therefore, compared to the second conventional example, there are many places where the aperture ratio can be changed, and it is relatively easy to obtain the preferable airflow distribution and uniform temperature distribution necessary for constructing the above-mentioned clean room, etc. This has the advantage that the partition plate 8 has numerous small ventilation holes 13 at locations that are approximately the same size as the outlet of the filter, which makes it easy to use orifices in high-performance filters. This is preferable because there is little difference in the degree of contamination between the part corresponding to the partition plate and the part corresponding to the part around the orifice on the partition plate.

[Brief explanation of the drawing]

The figures show an embodiment of the uniform distribution type outlet device of the present invention, in which FIG. 1 is a partially cutaway front view showing a conventional embodiment, FIG. 2 is a partially cutaway side view,
3 is a bottom view, FIG. 4 is a partially cutaway front view showing the embodiment of the present application, FIG. 5 is a partially cutaway side view, and FIG. 6 is a partially cutaway bottom view. Figure 7 is a front schematic diagram showing the test device, Figure 8 is a schematic plan view, Figure 9 is an analytical diagram of a photograph taken from the front of the conventional test condition, and Figure 10 is an analytical diagram of a photograph taken from the side. , Fig. 11 is an analysis diagram of a photograph taken from the front of the test condition of the improved type.
Figure 2 is an analysis diagram of a photograph taken from the side. 1...Duct connection collar, 2...Chamber, 3...Filter mounting frame, 4...Ultra high performance filter, 5...Filter mounting bolt, 6...
Filter mounting bracket, 8... Partition plate, 9... Clean front chamber, 10... Clean rear chamber, 11... Orifice,
12... Outlet side port, 13... Ventilation hole, 14... Face panel, 15... Left and right peripheral walls, 16... Front and rear surrounding walls, 17... Upper blind spot, 18... Lower blind spot, 19... Hole Range location, 20...Bottom wall, 21
...Left-facing air outlet, 22...Right-facing air outlet, 23
...Forward-facing air outlet, 24...Backward-facing air outlet, air outlet, 23...Forward-facing air outlet, 24...Backward-facing air outlet, 25...Downward-facing air outlet, 26...Air conditioning chamber, 2
7...Diffusion is a panel, 28...Hanging bolt, 30
... Bridge member, 29 ... Nut, 32 ... Hanging fitting, 33 ... Face panel frame, 34 ... Face panel mounting screw, 35 ... Adjustment hole plug, 3
6... Sample, 37... Measurement room, 38... Ceiling, 39... Punching panel, 40... Spiral duct, 41... Flexible duct, 42
...Orifice, 43...Manometer, 44...
... Duct, 45 ... Test air conditioner, 46 ... Left side wall, 47 ... Exhaust port, 48 ... Punching panel, 49 ... Box, 50 ... Control damper,
51... Flexible duct, 52... Exhaust blower, 53... Manometer for static pressure measurement, 55...
...Thermocouple, 56...Hybrid recorder, 5
7...Floodlight.

Claims (1)

[Claims] 1 It is used in a specific uniform room with fixed length, width, and height, and consists of a box-shaped chamber 2 that is open only at the bottom and has a duct connection collar 1 at the upper part. A high-performance filter 4 is housed in an intermediate height part of the chamber 2, and a partition plate 8 is provided on the lower surface of the chamber 2 to divide the inside of the chamber 2 into a pre-cleaning chamber 9 and a post-cleaning chamber 10,
Furthermore, an orifice 11 is provided in the center of the partition plate 8, and numerous small ventilation holes 3 are provided in the partition plate 8 at locations approximately the same size as the outlet of the filter. At the same time, a dish-shaped face panel 14 having an upside-down truncated pyramid shape is arranged on the lower surface of the chamber 2, and the peripheral edge of the face panel 14 is fixed to the lower opening edge of the chamber 2. Blind spots 17 provided on the walls and the peripheral edges of the front and rear peripheral walls,
Numerous small left-facing ventilation holes 2 are located in the bottom wall 20 of the same face panel 14 and at the location 19 excluding 18.
1. A right-facing air outlet 22, a forward-facing air outlet 23, a rear-facing air outlet 24, and a downward-facing air outlet 25 are opened, and the air conditioning chamber 26, which is further surrounded by the face panel 14 and the partition plate 8, has a diameter as shown above. A uniformly distributed air outlet device characterized in that a diffusion panel 27 slightly larger than the orifice is horizontally adjustable in vertical position and is installed concentrically with the orifice 11.