JPH04288428A - Cleaning bench - Google Patents

Abstract

PURPOSE:To provide a maintenance-free cleaning bench which prevents an increase in various germs in a work space and simplifies assembling work. CONSTITUTION:A work bench 20 is mounted to a casing 4 where an interior panel 10 is installed inside the casing 4 in such a fashion that a work space 5 may be formed on the work bench 20. An folded part 21 is installed on the upper end of this interior panel 10. The upper end of this folded par 21 is fixedly installed to the casing 4 with a small machine screw 22. A outlet board 23, which serves as a outlet port of air to the work space 5, is installed between an offset plane 24 of the folded part 21 and the small machine screw 22.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clean bench for assembling precision equipment or manufacturing pharmaceutical products in a clean work space formed inside the bench.

0002

[Prior art] Conventionally, this type of clean bench
As shown in Publication No. 2-93626, high-performance (
It supplies clean air from which dust and other substances have been removed using a HEPA filter.

[0003]The general structure is that a filter, a fan, and a blowout plate serving as an air outlet are attached to the top of the casing, and a workbench is attached to the bottom of the casing, and the space above the workbench becomes the workspace. The inner surface of the casing is coated as shown in FIG.

0004

[Problem to be solved by the invention] However, since the working space of such a clean bench is formed by the inner surface of the painted casing, the paint may peel off if equipment or equipment hits the inner surface during work. There was a fear that bacteria could easily spread from here.

[0005] Furthermore, since the blow-off plate is usually formed of punched metal and fixed to the casing, the installation work involves holding the blow-off plate and fixing it with screws. There was a problem in that it was easy to damage the painted wall surface that formed the wall.

[0006] The present invention has been made in view of the above, and by defining the work space with an interior panel separate from the casing, it not only prevents the proliferation of bacteria due to peeling of paint, etc., but also prevents the interior panel from growing. The purpose of the present invention is to provide a clean bench that is easy to assemble and easy to maintain, by improving the workability of installing a blow-off plate.

[0007]

[Means for Solving the Problems] The present invention provides a method for attaching a workbench to a casing as described in claim 1, and providing an interior panel inside the casing to form a workspace on the workbench. A bent part is provided at the upper end of the panel, the end of this bent part is fixed to the casing with a fixing tool, and an air outlet for the work space is provided between the stepped surface of the bent part and the fixing tool. A blow-out plate is inserted.

Further, as described in claim 2, a workbench is attached to the casing, and an interior panel is provided inside the casing to form a workspace above the workbench, and the lower end of the interior panel abuts the workbench. The casing is provided with an outwardly projecting projecting portion, while the casing is provided with an inwardly projecting projecting portion, and both projecting portions and the workbench are integrally connected to each other by a fastener.

Further, as described in claim 3, an interior panel is provided inside the casing at a predetermined interval and forms a work space inside the interior panel, and an observation window is provided on the rear surface of the interior panel. A bent part is provided at the end of the interior panel, a rib protruding outward is formed in a portion of the interior panel corresponding to the window, and the end of the bent part is fixed to the casing. It is.

According to a fourth aspect of the present invention, a wind speed sensor is provided on the back side of an air blowing plate provided above the work space.

Furthermore, as described in claim 5, in the casing in which a filter, a frame for fixing the filter, a fan and a motor are mounted, an elongated hole is provided at an end of the frame. It is something that

0012

[Operation] According to the structure of claim 1, in the clean bench of the present invention, the working space is defined by an interior panel separate from the casing. There is no need to worry about the paint on the inner wall peeling off and causing scratches due to the collision of equipment during assembly or equipment during experiment work, and the inner wall has a flat surface that does not expose screws, etc. Since it is possible to reliably prevent the propagation of various germs, etc.

[0013] Furthermore, when installing the air blowing plate, the air blowing plate can be temporarily fixed by simply inserting the blowing plate between the step of the interior panel and the fixing tool, so there is no risk of the blowing plate falling off during installation and damaging the inner surface of the work space. There is no need to worry, and assembly work efficiency can be improved.

Furthermore, since the interior panel and the casing can be fixed to the workbench at the same time by the overhanging portion of the interior panel and the overhanging portion of the casing, assembly work efficiency can be improved and the gap between the workbench and the interior panel can be reduced. By doing so, the atmosphere inside the work space can be prevented from leaking to the outside.

[0015] Furthermore, since the interior panel where the observation window is located has a bent part and ribs for fixing, screws etc. do not protrude into the work space, and furthermore, to prevent resonance with the casing. The space between the interior panel and the casing can be made as small as possible while creating a space, and the work space can be increased.

Furthermore, since the wind speed sensor is provided on the back side of the blow-off plate, the sensor is protected by the blow-off plate and is not exposed to the work space as in the conventional case, so it is possible to prevent damage.
The sensor can be removed together with the blow-off plate, making maintenance easier.

Furthermore, since a long hole is provided at the end of the filter frame, when assembling or replacing the filter, insert your hand into the long hole and align the edge of the long hole with the end of the filter. This makes it easy to position the filter, and the filter can be held using the elongated hole as a handle, making it easier to assemble and replace the filter.

[0018]

[Embodiment] Next, an embodiment will be explained based on the drawings.

The clean bench 1 has a working space 5 inside a casing 4 having an opening 3 at the front, and a high-performance (
HEPA) filter 6 is installed, a blower device 7 consisting of a sirocco fan 7A and a motor 7B is installed above this filter 6, and a similar pre-filter 8 is installed in sequence above it, and the opening 3 has a vertically movable opening/closing slide. A glass 2 is attached to the structure.

When the clean bench 1 is installed on a suitable platform and the blower device 7 is operated, the air passes through the pre-filter 8, the blower device 7 and the filter 6 in sequence as indicated by the broken line arrow in FIG. 1, and is purified. After that, it is supplied into the work space 5,
It will flow out from the opening 3. As a result, a clean space is created within the work space 5, and with the slide glass 2 raised and open, the worker can insert his/her hand into this space and perform fine craft work, culture experiments, etc. ing.

In order to form the working space 5, interior panels 10 made of stainless steel are attached to the casing 4 at predetermined intervals inside the casing 4. This interior panel 10 includes a side wall 10A parallel to the side wall of the work space 5 and a front wall 1 facing diagonally forward inside the slide glass 2.
0B and a rear wall 10C parallel to the slide glass 2,
At the back of this side wall 10A, a gas burner main flame terminal 11 to which a gas burner is connected, a gas burner small flame terminal 12 used as a starter, and a gas main valve 13 are arranged vertically and facing into the work space 5.

Furthermore, on the front wall 10B of the interior panel 10,
Indicators 15 for filters 6 and 8, power supply, lighting,
A control panel 16 equipped with various control switches 14 for the blower 7 and the like, and a power outlet 17 are arranged facing into the work space 5. As a result, various switches 1
4, the connection of the gas burner to the terminal 11, the operation of the gas main valve 13, etc., can all be performed by the operator with his or her hand inserted into the work space 5.

A recess 19 is formed in the rear lower part of the casing 4 on the interior panel 10 side of the clean bench 1, and a recess 19 is formed to accommodate a gas pipe 20 connected to the gas main valve 13, a power cord connected to a power outlet 17, etc., and a foot for a gas burner. Switch terminals and the like descend within the interior panel 10 and are drawn out from this recess 19. Therefore, frame 4
There is no protrusion on the back surface of the frame 4, so that the clean bench 1 can be installed with the back surface of the frame 4 in close contact with the wall surface of the room.

The work space 5 is formed not only on the interior panel 10 but also on a work table 20 attached to the lower surface of the casing 4. A Z-shaped bent portion 21 is formed at the upper end of the side wall 10A of the interior panel 10, and the end of the bent portion 21 of the interior panel 10 is fixed to the casing 4 from behind with screws 22. be done.

When installing the blow-off plate 23 (formed from punched metal) which serves as the air blow-out port into the work space 5, the rear end of the blow-off plate 23 is folded as shown in FIG. After inserting and locking between the stepped surface 24 of the curved part 21 and the protruding part of the screw 22, the top plate 26 (made of punched metal whose mesh is coarser than the blow-out plate 23) is inserted through the mounting bracket 25. ) is fixed with screw 27.

Further, the lower end of the interior panel 10 is formed with a protrusion 28 that is bent to protrude outward, while the lower end of the casing 4 is formed with a protrusion 28 that is bent to protrude inward. An overhang 29 is formed, and an angle 31 having a screw hole 30 is welded to the overhang 28 of the casing 4.

The interior panel 10 and the casing 4 are integrally fixed to the workbench 20 by screws 32 inserted into the projecting portion 28 and the angle 31, as shown in FIGS. 7 to 9.

The interior panel 10 is also attached to the rear wall 10C with a predetermined distance 43 from the casing 4, but a window 33 for observing the inside of the work space 5 is provided on the back of the casing 4 and the interior panel 10C. It is being

The window 33 includes a transparent glass plate 35 and a packing 3.
6. While fixing to the back of the casing 4 via the mounting brackets 37 and 38, the back of the casing 4 and the interior panel 10
It is formed by providing holes 39 and 34 at corresponding positions of C.

Here, Z-shaped bent portions 40 and 41 are formed at the upper and lower ends of the rear wall 10C of the interior panel 10,
Furthermore, a rib 42 that projects outward is formed in a portion corresponding to the window 33.

[0031] Then, the upper end bent portion 40 is attached to the casing 4.
The bent portion 41 at the lower end is fixed to the casing 4 and the workbench 20 so that a gap 43 is created between the bent portion 41 and the casing 4. At this time, the rib 42 constituting the window 33 is formed by burring, and its tip covers the hole 39 of the casing 4.

Furthermore, a wind speed sensor 45 is attached to the back surface of the outlet plate 23, which serves as an outlet for air to the work space 5, via a mounting bracket 44, as shown in FIGS. 11 and 12. This sensor has a thermistor that is heated to about 150° C. by constant energization, and the thermistor detects the wind speed by detecting a current value that compensates for the temperature drop caused by ventilation. 46 and 47 are a fluorescent lamp and a germicidal lamp, respectively.

The filter 6 also has packing 4 on the upper and lower surfaces.
Opening 48 above casing 4 with 6 and 47 glued together.
After being inserted, it is set at a predetermined position, and is fixed with screws 49 while being pressed by the frame 50. At this time, the fan 7A and the motor 7B are fixed on the frame 50 in advance.

[0034] Here, a long hole 51 is formed at the end of the frame 50 in the left-right direction. This elongated hole 51 is useful for positioning the filter 6 and lifting the filter 6 by inserting a hand or using it as a handle when attaching or replacing the filter 6.

Although the elongated hole 51 is not formed in the longitudinal direction of the frame 50, in the case of this embodiment, the frame 50 and the filter 6 have the same dimensions in the longitudinal direction. This is because positioning is not particularly necessary.

[0036] According to the structure of claim 1, in the clean bench constructed as described above, the working space 5 is defined by the interior panel 10 which is separate from the casing 4. Therefore, this interior panel 10 is made of stainless steel material. This eliminates the need to paint the inner surface of the casing 4, and there is no need to worry about the paint peeling off and causing scratches on the inner wall surface due to collisions with equipment during assembly or instruments during experimental work, as in the past. Since it can be made into a flat surface with no exposed screws, etc., it is possible to reliably prevent the proliferation of various germs and the like.

Furthermore, the air blowing plate 23 can be temporarily attached by simply inserting the air blowing plate 23 between the stepped surface 24 of the interior panel 10 and the screws 22, so that the air blowing plate 23 can be temporarily fixed when being attached.
There is no need to worry about the parts 3 falling off and damaging the inner surface of the work space 5, and the ease of assembly work can be improved.

Furthermore, since the interior panel 23 can be fixed to the workbench 20 at the same time as the casing 4 through its overhang 28 and the overhang 31 of the casing 4, it is possible to improve assembly work efficiency and to By eliminating gaps between interior panels 10, the atmosphere in the work space can be prevented from leaking to the outside.

Furthermore, since the bent parts 40, 41 and ribs 42 for fixing are formed on the interior panel 10C where the observation window 33 is located, screws etc. do not protrude into the work space 5, and moreover, the casing 4 and By forming a gap 43 between them to prevent resonance, the gap 43 between the interior panel 10 and the casing 4 can be made as small as possible while reducing noise.
The space within the work space 5 can be increased.

Further, since the wind speed sensor 45 is provided on the back side of the blow-off plate 23, the sensor 45 is protected by the blow-off plate 23 and is not exposed to the work space 5 as in the conventional case, so that damage can be prevented, and the sensor 45 can be installed together with the blow-off plate 23. The sensor 45 can be removed at any time, making maintenance easier.

Furthermore, since a long hole 51 is provided at the end of the frame 50 for attaching the filter 6, when assembling or replacing the filter 6, the user can insert his or her hand into the long hole 51 and touch the edge of the long hole 51. This allows the filter 6 to be aligned with the end of the filter 6, making positioning of the filter 6 easy, and allowing the filter 6 to be held using the elongated hole 51 as a handle, facilitating assembly work and filter replacement work. can.

[0042]

[Effects of the Invention] As described above, according to the present invention, it is possible to prevent the proliferation of various germs on the wall surface forming the work space, and it is also possible to improve the workability of installing interior panels and air blowing boards, and to make assembly easier. To provide a clean bench that is simple, easy to maintain, and has excellent practicality such as a large work space.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view taken along line A-A of the clean bench in FIG. 3.

FIG. 2 is a perspective view of the clean bench with the slide glass opened.

FIG. 3 is a front view of the clean bench.

FIG. 4 is a sectional view taken along line BB in FIG. 3;

FIG. 5 is a rear perspective view of the clean bench.

FIG. 6 is a cross-sectional view of the main part of FIG. 1;

FIG. 7 is a sectional view taken along line CC in FIG. 1;

FIG. 8 is a bottom view of the casing and interior panel before the workbench is attached.

FIG. 9 is a bottom view of the workbench.

FIG. 10 is a sectional view of the vicinity of the window in FIG. 1;

FIG. 11 is a vertical cross-sectional view of a main part of the clean bench.

FIG. 12 is a plan view of the blow-off plate.

FIG. 13 is an exploded view of essential parts of the clean bench.

FIG. 14 is a plan view of a frame body equipped with a filter.

[Explanation of symbols]

4 Casing 5 Work space 6 Filter 10 Interior panel 20 Workbench 21, 40, 41 bending part 22, 32 screws 23　Blowout board 24 Step surface 28, 31 Overhang 33 Window 42 Rib 43 Interval 45 Wind speed sensor 50 Frame body 51 Long hole

Claims (5)

[Claims] Claim 1: A workbench is attached to the casing, an interior panel is provided inside the casing to form a workspace on the workbench, a bent portion is provided at the upper end of the interior panel, and the bent portion is provided with a bent portion. An end portion of the clean bench is fixed to a casing with a fixing device, and a blow-off plate serving as an air outlet to the work space is inserted between the stepped surface of the bent portion and the fixing device. . 2. A workbench is attached to the casing, and an interior panel is provided inside the casing to form a workspace above the workbench, and the lower end of the interior panel that contacts the workbench extends outward. A clean bench characterized in that a projecting portion is provided, a projecting portion projecting inward is provided on the casing, and both projecting portions and a workbench are integrally connected to each other by a fixing device. 3. An interior panel which is attached to the inside of the casing at a predetermined interval and forms a work space inside the casing, and an observation window is provided on the rear surface of the interior panel, wherein the interior panel A clean bench characterized in that a bent portion is provided at an end of the interior panel, a rib protruding outward is formed in a portion of an interior panel corresponding to a window, and the end of the bent portion is fixed to a casing. 4. A clean bench characterized in that a wind speed sensor is provided on the back side of an air blowing plate provided above a work space. 5. A clean bench equipped with a filter, a frame for fixing the filter, a fan and a motor in a casing, characterized in that a long hole is provided at an end of the frame. .