JP2007170763A - Desktop-type clean bench - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a desktop-type clean bench capable of improving its workability and usability, with respect to the desktop-type clean bench provided with a fan unit sucking the air from the external and axially distributing the same, and a HEPA filter cleaning the air from the fan unit, on an upper part of a working chamber. <P>SOLUTION: In this desktop-type clean bench, a front shutter for opening and closing the working chamber is obliquely disposed to take a wide working space, which makes a worker to easily perform work, and hardly tire even in long working hours. As a slit is formed on a ceiling case on which the fan unit and the HEPA filter are disposed, at the upper part of the working chamber, the stagnation of airflow at a corner portion of the upper part of the working chamber is hardly found, and the worker can immediately start the work. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a desktop clean bench that is used to obtain a dust-free and aseptic environment, and can be easily installed and moved, and particularly relates to a configuration that improves the usability of the desktop clean bench. is there.

  Conventionally, Patent Document 1 (Japanese Patent Application Laid-Open No. 2003-214673) describes that a tempered glass shutter is inclined to the upper front in a cleaning work table provided with a fan and a filter on the back of a work chamber.

  Also, in FIG. 4, a conventional fan or filter is installed in the upper part of the working chamber, and the front shutter is vertical (see FIG. 5 of Patent Document 1). In such a tabletop clean bench having a vertical shutter, airflow stagnation tends to occur in the upper corner of the work chamber, and dust tends to float, so that when the worker starts work, It took a few minutes to reach a value that guarantees cleanliness.

JP 2003-214673 A

  Conventionally, in the tabletop clean bench shown in FIG. 4, the front shutter is installed vertically, and the operator stretches out his hand and has a shutter in front of his face. Had the disadvantage of getting tired.

  Further, in such a desktop clean bench with a vertical front shutter, airflow stagnation is likely to occur in the upper corner of the work space, and dust is likely to float. It took a few minutes to reach a value that guarantees cleanliness.

  Furthermore, Patent Document 1 shows a configuration in which a front shutter is inclined in a cleaning worktable provided with a fan and a filter at the back of a work room. However, such a configuration has a longer depth and is compared at the same depth. As a result, there is a drawback that the space in the work room cannot be made wide.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a desktop clean bench having an improved usability.

  In order to achieve the above object, the present invention provides a fan unit that sucks air from the outside and blows it in the axial direction, a HEPA filter that cleans the air blown from the fan unit, and clean air from the HEPA filter in the working chamber. A desktop clean bench having a blow punching that blows out, a work room in which an operator works, and a front shutter that opens and closes the work room is characterized in that the front shutter of the desktop clean bench is installed obliquely.

  Further, the above-described desktop clean bench is characterized in that the blow punching in the upper part of the work chamber, which is the blowout surface of the clean air, is inclined.

  Further, the present invention is characterized in that a slit is provided in the ceiling case at the upper part of the working room in which the fan unit and the HEPA filter are installed.

  According to the present invention, in a desktop clean bench in which a fan unit and a HEPA filter are installed at the upper part of the work room, since the front shutter is provided obliquely, the work space is widened, the operator can work easily, and the work is performed for a long time. Even if it has the effect that it is hard to get tired.

  In addition, since it is difficult for air flow stagnation to occur in the upper corner of the work chamber, the work of the clean bench can be started quickly, improving workability and improving usability.

  The best mode for carrying out the present invention will be described.

  Embodiments of a desktop clean bench according to the present invention will be described below with reference to the drawings.

  FIG. 1A is a front sectional view of a desktop clean bench according to a first embodiment of the present invention, and FIG. 1B is a side sectional view.

  1A and 1B, reference numeral 1 denotes a desktop clean bench, and reference numeral 2 denotes a fan unit, which includes a motor and a fan. 3 is a HEPA filter, 4 is blow punching, 5 is a work chamber, 6 is a flow of clean air in the work chamber 5, 7 is a front shutter, 8 is intake air, and 12 is a flow of air exhausted from the work chamber 5. It is.

  In FIG. 1, when the fan unit 2 operates in the desktop clean bench, air is sucked from the suction port above the clean bench 1 and sent out in the axial direction. A turbo fan etc. are used for a fan. The air sent out from the fan passes through the HEPA filter 3 and is blown out into the working chamber 5 through the blow punching 4 as clean air. The blow punching 4 is for uniformly blowing clean air into the work chamber 5.

  The air in the work chamber 5 is exhausted from the opening portion of the front shutter 7 to the outside of the clean bench 1 as shown by a flow 12 when the operator opens the front shutter 7 that can be freely opened and closed. .

  The front shutter 7 is installed obliquely so that the bottom of the clean bench 1 is widened. By adopting such a structure that is attached obliquely in front of the worker, the work room can be made wider and the worker can easily work. With the configuration in which the front shutter is inclined in this manner, the worker extends his / her hand to work. However, if the operator is inclined more than the vertical front shutter, the operator's face does not hit the shutter, which makes it easier to work, and for a long time. I am not tired even at work.

  FIG. 2 is a side cross-sectional view of a desktop clean bench showing a second embodiment of the present invention.

  In FIG. 2, when the fan unit 2 is operated, air is sucked in from the upper suction port 14 outside the clean bench 1, sent out in the axial direction by the fan, passed through the HEPA filter 2 as clean air, and through the blow punching 4. Blow out into the working chamber 5. As described in the first embodiment, the front shutter 7 is attached obliquely in front of the worker and the bottom of the work chamber 5 is wide, so that the clean air blown from the blow punching 4 becomes more uniform. Thus, the blow punching 4 is installed so as to be inclined so that the back side is lowered. With such a configuration, clean air can be blown into the work space more widely.

  In the second embodiment, the blowing direction is changed by blowing punching (round hole), but a wind direction plate may be used.

  FIG. 3 shows an upper part of a side sectional view of a desktop clean bench showing a third embodiment of the present invention.

In FIG. 3, when the fan unit 2 of the desktop clean bench 1 is operated, air is sucked in from above the clean bench 1, is sent out by the fan, passes through the HEPA filter 3, and blows clean air into the work chamber 5 by punching. Blow out.
At this time, air stagnation is likely to occur in the corner portion above the front shutter side 7 in the work space 5, and the present invention has a structure that eliminates this stagnation. That is, the slit 9 is provided on the front shutter side of the ceiling case 13 provided with the fan unit 2 and the HEPA filter 3.
Here, regarding the pressure of the clean bench 1, when the fan unit 2 operates, the fan sends out air and becomes positive pressure (+ pressure), and the ceiling case that is the air suction port of the fan is negative pressure (−pressure). The working chamber 5 has a positive pressure (+ pressure). Therefore, when the slit 9 is provided on the front shutter side of the ceiling case 13, the clean air blown out from the blow punching 4 at the upper corner portion in the work chamber 5 has a positive pressure in the work chamber 5 and the ceiling case 13 has a positive pressure. Because of the negative pressure, air flows into the slit 9 and flows downward along the front shutter. By providing the slit in this way, the air flow described above is generated, and the stagnation at the corner portion is eliminated.

It is structural drawing (front sectional drawing, side sectional drawing) which shows the desktop clean bench of this invention. It is structural drawing (side sectional drawing) which shows the desktop clean bench of this invention. 1 is a structural diagram (side view) of a desktop clean bench showing a first embodiment of the present invention. It is structural drawing (front sectional drawing, side sectional drawing) of the conventional desktop type clean bench.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Desktop type clean bench 2 ... Fan unit 3 ... HEPA filter 4 ... Blowout punching 5 ... Work chamber 7 ... Front shutter 9 ... Slit 11 ... Stagnation 13 ... Ceiling case

Claims (3)

A fan unit that sucks air from the outside and blows it out in the axial direction;
A HEPA filter for purifying air blown from the fan unit;
Blowout punching for blowing clean air from the HEPA filter into the working chamber;
A working room where workers work,
In a desktop clean bench having a front shutter that opens and closes the working chamber,
A desktop clean bench characterized in that the front shutter of the desktop clean bench is installed obliquely. A fan unit that sucks air from the outside and blows it out in the axial direction;
A HEPA filter for purifying air blown from the fan unit;
Blowout punching for blowing clean air from the HEPA filter into the working chamber;
A working room where workers work,
In a desktop clean bench having a front shutter that opens and closes the working chamber,
A desktop clean bench characterized by tilting the blowout punching at the top of the work chamber, which is the blowout surface for clean air. A fan unit that sucks air from the outside and blows it out in the axial direction;
A HEPA filter for purifying air blown from the fan unit;
A ceiling case in which the fan unit and the HEPA filter are installed;
Blowing punching for blowing clean air from the HEPA filter into the working chamber;
A working room where workers work,
In a desktop clean bench having a front shutter that opens and closes the working chamber,
A desktop clean bench characterized by a slit in the ceiling case at the top of the work room of the desktop clean bench.

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