JPH0112115Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a simple clean room that maintains cleanliness by controlling suspended matter in the air to below a specified value in a substantially sealed room that is isolated from the outside.

Generally, there are countless microparticles such as bacteria, fiber waste, metal powder, and other dust floating in the air, but depending on the product type, there are fields that require processing under aseptic conditions or without foreign substances.

Traditionally, when processing products in the fields mentioned above, the factory itself, or a part of the factory, was constructed into a closed chamber using iron plates or wood, and the walls were moved from the ceiling to the floor, or from one side wall to the other. Clean air flow methods have been used that uniformly flow clean air through a filter and discharge it, but depending on the product type, the flow rate cannot be made very fast, so the cleanliness is not perfect, and the special structure requires Despite the high equipment costs due to the large amount of air required for buildings, there are many problems such as the inability to maintain the air cleanliness at a predetermined level when goods are brought in and out and workers are brought in and out. It had a point.

In view of the above-mentioned current situation, the present invention is to form a nearly sealed room by stretching a vinyl sheet with an appropriate frame, provide an appropriate number of skylights on the ceiling of the sealed room, and make it possible to travel by guide rails placed on both sides. A door with a seal is provided so that it can be opened and closed freely, and an entrance and exit is provided on the side wall of the sealed room so that the door can be opened and closed with a seal, and a part of the room has a door with a seal that leads to the inside and outside separately. An entrance/exit chamber is formed, and the sealed chamber includes a circulation unit capable of circulating indoor air using a blower with a filter, and a blower unit capable of constantly maintaining a slightly high pressure state in the sealed chamber by taking in outside air through the filter. The object of the present invention is to provide a facility having a simple clean room characterized by the provision of a simple clean room, which is simple in construction and inexpensive, and which can maintain a substantially constant level of cleanliness at all times.

To explain in detail based on the embodiment shown in the drawings, reference numeral 1 denotes a sealed chamber in which a vinyl sheet containing a reinforcing material is stretched over an appropriate frame (not shown) to form a substantially sealed rectangular body.

2, 3, and 4 are skylight opening/closing devices installed on the ceiling of the sealed room 1, of which the opening/closing device 2 slides horizontally, and the opening/closing devices 3 and 4 slide vertically, respectively.
a, 3a, and 4a, all of which have the same configuration, so the opening/closing device 2 will be described in detail below as a representative example.

Guide rails 2b ₁ and 2b ₂ are arranged in parallel on both sides of the opening 1a provided in the ceiling of the sealed room 1, and slide the door 2a by fitting with guide rollers 2c protruding from the top surface of the door 2a. It is hung freely.

Further, the door 2a has a cushioning hollow gasket 2d attached to the four circumferences of the lower surface, and a sealing effect is performed when the door is closed by engaging with the sealing material 1b attached to the four circumferences of the upper surface of the opening 1a. be.

Although not shown as an opening/closing mechanism for the door 2a, a rope connected to the door 2a is moved by a cylinder via a pulley, or a guide roller 2c is used.
It is also possible to attach a sprocket to the motor and drive the speed reduction motor through an endless chain.

Reference numeral 5 denotes a door device provided on one side in the longitudinal direction of the sealed chamber 1, which can be sealed by sealed double doors 5a and 5b.

Reference numerals 6a and 6b denote rails embedded in the floor surface extending between the inside and outside of the door device 5 section, so that the traveling truck 7 can run in and out. The gap is configured so that it can be almost sealed with a packing as appropriate.

Reference numeral 8 denotes an entrance/exit room partitioned into one corner of the sealed room 1, with a door 8a with a seal on the outside and a door with a seal 8b on the inside, allowing workers to enter and exit through the entrance/exit room 8. I have done everything I can.

Reference numeral 9 denotes an overhead traveling crane device, which supports traveling rails 9a ₁ and 9a ₂ arranged in the longitudinal direction on the ceiling inside the closed room 1 by support legs 9b ₁ to 9b ₄ to enable horizontal movement of the traveling trolley 9c; A crane 9d is provided on the traveling trolley 9c so as to be movable in the vertical direction.

Reference numerals 10a and 10b are circulation units provided within the closed chamber 1, which are configured to purify and circulate the air within the closed chamber 1 using a blower with a filter.

Reference numeral 11 denotes a blower unit, which uses a duct 11b provided to communicate the inside and outside of the sealed room 1 and a blower 11a with a filter installed at the inner end of the duct to purify outside air and forcefully blow it into the room. is maintained at a slightly higher pressure than the outside at all times.

Therefore, when using the doors 2a, 3a, 4
When the air circulation units 10a, 5b and 8a, 8b are closed, the air in the sealed chamber 1 is purified by the operation of the circulation units 10a, 10b, and the air in the air blower unit 1 is also purified.
1, the outside air is purified and sent into the sealed chamber 1.

As a result, the inside of the sealed chamber 1 will be in a higher pressure state than the outside air even if some air leaks from each gap. The level of this high pressure is maintained within a predetermined pressure range at all times by a pressure regulating mechanism attached to the blower unit 11.

The pressure adjustment mechanism may be switching the operation/stop of the blower unit 11 itself in conjunction with a pressure detector, or increasing/decreasing the amount of air blown by the blower unit 11 using a continuously variable transmission or the like.

When a worker enters or exits the room, the pressure inside the sealed chamber 1 is kept constant by doing so through the entrance/exit chamber 8.

Loading and unloading of articles into and out of the closed room 1 is normally carried out using a traveling trolley 7 through a door device 5, and when loading and unloading heavy items, a crane provided outside is used by selectively using the skylight doors 2a, 3a, and 4a as appropriate. be able to.

It should be noted that a plurality of blower units 11 are provided, and only one is in operation at all times.
Multiple operations may be performed in conjunction with the door opening actions of a and 5b.

As detailed above, the clean room of this invention is
It has a simple structure using a vinyl sheet, and a circulation unit with a filter installed inside circulates the indoor air, while a blower unit with a filter purifies and blows outside air to maintain a high pressure within a certain range at all times. Since this is done through an entrance/exit room with double doors, inside and outside, there is no risk of contaminated outside air flowing directly into the room due to unilateral air outflow from the inside when each part is opened or closed.
Although the structure is simple and inexpensive, the indoor cleanliness can be maintained at a substantially constant level at all times.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view, FIGS. 2 and 3 are views taken in the direction of the arrows in FIG. 1 and sectional views taken in the direction of the arrows in FIG. They are a -arrow view and a -arrow cross-sectional view. In the figure, 1 is a sealed room, 2, 3, and 4 are skylight opening/closing devices, 5 is a door device, 8 is an entrance room, and 10a, 10b.
11 indicates a circulation unit, and 11 indicates a blower unit.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A nearly sealed room is formed by stretching a vinyl sheet with an appropriate frame, and an appropriate number of skylights are installed on the ceiling of the sealed room, and the vehicle runs on guide rails placed on both sides. A door with a seal is provided on the side wall of the sealed room so that the door can be opened and closed freely, and a door with a seal is provided on the side wall of the sealed room so that the door with a seal can be opened and closed. Further, in the sealed chamber, there is provided a circulation unit that can circulate indoor air using a blower with a filter, and a blower that can take in outside air through the filter and maintain the inside of the sealed chamber at a slightly high pressure state at all times. A simple clean room featuring a unit. (2) The simple clean room according to claim 1, wherein the vinyl sheet is integrally formed with a reinforcing material such as fiber or wire. (3) The air blowing unit is capable of increasing the amount of air blown in conjunction with the opening of the skylight, loading/unloading entrance, etc.
Simple clean room as described in section. (4) A plurality of said blower units are provided, and although only one is operated at all times, a plurality of them can be operated in conjunction with the opening action of each of said door parts, the scope of the utility model registration claim 1 or 2. Simple clean room described in Section 2.