[Case Study] Transforming an Existing Room into a Clean Room.

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last updated：Oct 22, 2020

蒲田工業

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Transforming an existing room into a clean room.

Due to the increasing sophistication of market demands for products, we have been consulted about the desire to perform cleaning and painting in a clean environment. Since cleaning and painting will be done using organic solvents, appropriate exhaust treatment is necessary. To keep the introduction costs down, it was essential to continue using the existing air conditioning equipment while managing the temperature. Issues: 1. The existing room is constructed with common building materials (gypsum board), which do not consider dust generation. 2. If airborne dust adheres to the products during cleaning and painting, it will reattach, making it impossible to meet high-quality standards. 3. A design is needed to ensure that the cleanliness does not decrease during entry and exit from the cleaned room and during the transportation of products. 4. Simply exhausting air will create negative pressure within the clean room, so it is necessary to supply clean air to maintain positive pressure overall. 5. We want to process the odors generated during cleaning and the paint fumes produced during the painting process with a single exhaust system.

Related Link - http://www.kamata.co.jp/html/solution/2013/02/1new…

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We propose the realization of a Class 10,000 cleanroom by utilizing existing walls and air conditioning systems, modifying the building structure as necessary for cleanliness, and introducing a circulating floor-mounted FFU (Fan Filter Unit). This approach allows for significant cost reductions compared to replacing with cleanroom air conditioning. We will also design exhaust systems that can be shared for both washing and painting processes, as per your request. Key Points: 1. Replace ceiling materials from gypsum board to decorative calcium silicate board to eliminate dust generation from the ceiling. 2. Install air shower-equipped ante-rooms at the sheet shutter and double doors, effectively shutting out dust from the outside. 3. To enable shared exhaust systems, install rail-mounted exhaust hoods that can be moved between continuous washing and painting workspaces. This ensures exhaust efficiency by positioning the hoods close to the work area. 4. To prevent paint from adhering to the exhaust equipment (ducts and blowers), attach stainless steel mesh filters (SUS demister) to the exhaust hoods. 5. To prevent negative pressure due to exhaust, install FFUs in the ceiling and introduce outside air.