What materials can be used in cleanrooms

A CleanRoom is a facility specifically designed to control environmental contamination and is widely used in the pharmaceutical, Electronics, and aviation industries. Its function is to maintain the cleanliness, temperature, humidity and pressure of the indoor air stable through a series of equipment and systems. The following is a detailed introduction of common equipment in cleanroom.

Cleanroom wall panel

Purification color steel plate is one of the main building materials of modular clean room, with good surface smoothness and corrosion resistance. Its high-quality heat insulation and easy-to-clean characteristics make it an ideal choice for cleanroom walls and ceilings. Purification color steel sheet usually adopts polyurethane or polystyrene as the core material, providing superior stability and structural strength.

1. Facing material selection

There are various choices of facing materials for purification panels, mainly including:

Color Steel Sheet: with good corrosion resistance and aesthetics, it is widely used in the walls and ceilings of cleanrooms.

Galvanized sheet: economical and practical, with good oxidation resistance, suitable for general cleanroom environment.

Stainless steel: corrosion-resistant, easy to clean, suitable for places with very high requirements for hygiene and cleanliness, such as pharmaceutical and food processing industries.

Inorganic pre-coated sheet: excellent antimicrobial properties, suitable for biopharmaceutical and other high cleanliness requirements of the application.

2. Core material types

Purification boards have a variety of core material types, each with unique performance characteristics:

Rock wool: excellent thermal insulation and fire performance, suitable for high temperature environment.

Silica rock: high temperature resistance, chemical stability, suitable for special process needs.

Magnesium sulfide: good fire performance, commonly used in places requiring high security.

Hollow magnesium glass: lightweight, high strength, suitable for large cleanroom walls.

Paper honeycomb: lightweight with good sound insulation properties, suitable for low load applications.

Aluminum honeycomb: high strength and light weight, suitable for cleanrooms with high strength and impact resistance requirements.

Glass-magnesium rock wool: combining the advantages of rock wool and glass-magnesium, with good thermal insulation and fireproof characteristics.

One-piece cleanroom door

One-piece purification door is an important part of the entrance and exit of the cleanroom, designed to prevent pollutants from entering the clean area. These doors are usually made of stainless steel or aluminum alloy with special surface treatment to ensure smooth and easy to clean. They are usually equipped with an airtight design that ensures an effective barrier against external contamination when closed.

• 1、Clean steel door

  High-quality galvanized steel plate (304 stainless steel plate) overall bending, continuous welding production.

  Surface electrostatic resin powder coating (stainless steel surface sandblasted), flat and smooth.

  The core material is made of flame retardant paper honeycomb or aluminum honeycomb, which is lightweight and has high structural strength.

• 2、Clean aluminum alloy door

  The door frame and the door are made of high-strength aluminum alloy with cut and spliced corners.

  The surface material of the door is made of color steel plate or diamine resin plate, which is non-porous, does not accumulate dust and is easy to clean.

Diamine resin plate is bacteria-resistant, wear-resistant, and can withstand the frequent disinfection treatment of pharmaceutical factories.

Double Tempered Glass Cleanroom Windows

Double tempered glass purification window not only provides good light transmission, but also effectively prevents the intrusion of external pollutants. The tempered glass material has superior impact resistance and thermal stability, ensuring that it is not easily broken when the environment changes inside and outside the cleanroom. At the same time, the double-pane design helps to provide better thermal insulation, further enhancing the environmental control capability of the cleanroom.

Double-layer clean window features:    

• sound insulation: to meet people's needs for lighting, viewing, decoration, environmental protection, general insulating glass can reduce noise by about 30 decibels, and inert gas-filled insulating glass can be reduced on the basis of the original 5 decibels or so, you can reduce the noise of 80 decibels to 45 decibels extremely quiet degree.    

• Good thermal insulation properties: thermal conductivity system K value, single piece of 5mm glass K value of 5.75kcal/mh℃，General insulating glass K value of 1.4-2.9 kcal/mh ℃, for the insulating glass filled with argon and sulfur fluoride gas K value can be reduced to a minimum of 1.19 kcal/mh ℃, argon gas is mainly used to reduce the heat conduction K value, while sulfur fluoride gas is the main Used to reduce the noise dB value, the two gases can be used alone, can also be mixed and used according to a certain ratio.    

• Anti-condensation: In the winter indoor and outdoor temperature difference between the environment, single glass doors and windows will appear condensation phenomenon, and the use of insulating glass, there is no condensation phenomenon!

Air shower

Air shower is an important pre-treatment equipment of clean room, mainly used for removing dust of personnel and goods. Before entering the clean room, the air shower through the high-efficiency filter will air purification, a large amount of air to high-speed blowing into the room, to remove the purpose of carrying dust. Air showers are usually equipped with ultraviolet sterilization lamps to enhance air sterility.

• According to the blowing method, the air shower can be divided into: top blowing air shower, single blowing air shower, single Double Blowing Air Shower, single triple blowing air shower, double double blowing air shower, double triple blowing air shower, multi-person double blowing air shower, multi-person triple blowing air shower.

• According to the different materials of the box can be divided into: Stainless steel air shower, Steel air shower, outside the stainless steel air shower, color plate air shower, outside the color plate stainless steel air shower.

• According to the different degree of automation, the air shower can be divided into: Intelligent voice air shower, automatic door air shower, explosion-proof air shower, rapid shutter door air shower.

• The air shower can be divided into: human shower, cargo shower, air shower channel, cargo shower channel air shower according to the need to do several forms: straight through the shape, L-shaped, S-shaped, U-shaped, ladder type.

Cleanroom Havc and AHU

Purification air-conditioning unit is the core equipment of clean room air conditioning, with various functions such as filtration, heating, cooling and dehumidification. The equipment removes fine particles from the air through high-efficiency filters and maintains the indoor temperature and humidity within the desired range. The selection and design of purification air conditioning unit directly affects the performance and energy efficiency of the clean room.

1, the main parameters of control

Conventional air conditioning focuses on temperature, humidity, fresh air volume and noise control, while the purification of air conditioning focuses on controlling the dust content of indoor air velocity, the number of air changes.

Temperature, humidity requirements of the room, temperature, humidity is also the main control parameters

For biological clean room +, bacteria content is one of the main control parameters

2, air filtration means

Conventional air conditioning, some only coarse-effect primary filtration, the higher requirements are coarse-effect, medium-effect two-stage filtration process. The purification of air conditioning requires three-stage filtration, that is, coarse, medium, high-efficiency three-stage filtration, or coarse, medium, sub-high efficiency three-stage filtration. Biological clean room in addition to the air supply system has three filtration, in the exhaust system based on different circumstances set up two high-efficiency filtration or filtration adsorption filtration, in order to eliminate the animal's special odor and to avoid contamination of the environment!

3、Indoor pressure requirements

Conventional air conditioning indoor pressure requirements are not strict. Purification of air conditioning in order to avoid the penetration of polluted air outside or different production workshops of different substances affect each other, the value of the positive pressure of different clean areas have different requirements. In the negative pressure clean room there is a negative pressure control requirements.

The equipment configuration of the clean room is directly related to its environmental control effect and work efficiency. Comprehensive above equipment, it can be seen that the design and operation of cleanrooms need to consider a variety of factors, including air flow, contaminant control and temperature and humidity management. Correct selection and configuration of these devices will provide a strong guarantee for the efficient operation of the cleanroom.