The main product main business: air purification and air conditioning system engineering: a variety of dust-free workshop clean room, ultra-clean room, clean room, dust-free purification plant design and installation debugging turnkey supporting projects, has been, Jiangxi Nanke purification for the customer to build a variety of clean levels of clean room are to meet the ISO14644-1 standard, GB50073-2010 national standards and pharmaceutical GMP specifications. 2010 national standards and national pharmaceutical GMP specifications and excellent standards, we provide customers with products and services have been a wide range of customers' excellent reputation.
The company joins hands with Nanchang University HVAC Engineering Department as the technical support, "clean field of demonstration" standard strict requirements, adhere to the "quality, reputation, service" purpose, with international technology, to create a well-known brand in the purification industry.
Air clean engineering technology (industrial and biological clean room)
Air clean technology (also known as clean technology or clean room technology) refers to the control of indoor air concentration of suspended particulate matter as the goal of the relevant technology, the concentration of suspended particulate matter per unit volume of air greater than or equal to the permissible number of particles of a certain size to express, usually also known as the air's cleanliness, and this is divided into cleanliness class or level. The cleanliness class or level is divided accordingly.
Classification of clean rooms
Clean rooms can be divided by the main control object of the clean room can be divided into: industrial clean room, biological clean room.
1. The main control object of the industrial clean room is dust particles (regardless of life, inanimate), some processes also require the control of molecular pollutants AMC.
Industrial clean rooms are mainly used in electronics, aerospace, aviation, machinery, chemical, chemical and pharmaceutical, energy, nano and other industries. Especially the electronics industry and photoelectronics industry is inseparable from the clean room and clean technology.
2. Biological clean room is the main control object is alive, live microbial particles, such as germs, viruses and other harmful particles to humans, animals, the environment.
Biological clean room is widely used in medical (clean operating room, clean wards), biopharmaceuticals, experimental animal breeding, biosafety laboratories, health and epidemic prevention and quarantine of the cause. The development of biological clean room is very fast, and has been recognized and valued by all parties.
According to the classification of airflow clean room: unidirectional flow clean room, non-unidirectional flow clean room, mixed flow clean room, vector flow clean room.
One-way flow (laminar flow) clean room, which is divided into vertical one-way flow clean room and horizontal one-way flow clean room.
The four major technical elements of the clean room:
1. The air supply through at least three levels of filtration (coarse, medium and high efficiency), and high-efficiency filters should be set at the end of the system.
2. The clean room should have enough purification and air conditioning air supply.
3. The clean room should maintain the necessary pressure gradient (positive or negative pressure gradient).
4. Clean room should be reasonable airflow.
Clean room system components: large air volume of circulating air (considering local exhaust) and high-performance filters; in line with the need to control the temperature and humidity of the air-conditioning equipment (to consider the internal heat); set up to control the dust brought into the room from outside the air shower room, transfer window and other equipment. All around is not easy to adhere to the dust, smooth surface, clean room.
Air filter
The main difference between clean air-conditioning system and ordinary air-conditioning system is that it uses multi-stage filtration technology ﹑ to ensure that the dust particles do not enter the system and the clean room special measures, as well as to meet the requirements of the clean room airflow.
Air filter is the main equipment in the clean air system. There are three major categories of filters: primary filters, intermediate filters, high-efficiency filters (or sub-high efficiency filters).
The primary filter is mainly to block the particle size of 10 microns or more of the settling dust particles and a variety of foreign matter. Most of these filters are made of wire mesh, iron filings, glass wire and a variety of man-made fibers to do the filter material.
Air conditioning box by the fresh air section, the initial filtration section, preheating section, the new return air mixing section, the surface cooling section, air supply section, heating section, humidification section, high and medium efficiency filtration section.
Static pressure control
Clean room pressure requirements: in order to maintain the air from neighboring rooms or outside the atmosphere of pollution, clean must maintain a
than the neighboring room and the atmosphere of high air pressure, referred to as maintaining positive pressure.
Static pressure involves two issues:
(1) how much static pressure needs to be maintained; to prevent outdoor air from penetrating the door and window gaps in the static pressure; to prevent the door from opening the static pressure of the outdoor air intrusion.
Often clean rooms need to maintain a positive pressure to prevent the inflow of external pollution, and conducive to the discharge of internal dust. Positive pressure value generally follow the design of the following two:
1, different levels of clean rooms and clean areas and non-clean areas between the pressure difference should not be less than 5Pa;
2, clean plant indoor and outdoor pressure difference should not be less than 10Pa, generally 10 ~ 20Pa. (1Pa = 1N/m2)
(2) How much air supply is needed (air exchange) to maintain the static pressure difference? ) to maintain the static pressure difference. Maintain the static pressure difference using the gap method and the number of air changes method for calculation.
The number of air changes method, it is appropriate to select the following data: differential pressure of 5Pa, take 1 / h ~ 2 times / h; differential pressure of 10Pa, take 2 / h ~ 4 times / h.