Nowadays, many companies need to produce products in a clean room, such as large food production and processing and electronics production factory. Therefore, many companies are using clean room. The reason why clean room can be dust-free is mainly because a lot of high-tech purification equipment was installed in the clean room during decoration.     1. The air inlet system of clean room must be installed filter box, and a central purification air conditioner (the central purification air conditioner must be divided into three filter sections: primary efficiency /medium efficiency/high efficiency) with a high-efficiency air supply port at the end. It's necessary to install a purification booster box if need. 2. the return air system of clean room must be installed, including a return air outlet, a pre filter, and a middle filter return air box. 3. Enter the buffer zone before entering cleanr room. Electronic interlocks are installed on the buffer zone door, and clean storage cabinets and air fresheners are placed in the changing area. People and goods entering the clean room, must pass through the air shower, cargo shower room, and use pass box to mainly transfer small items. 4. In the clean room, vertical clean bench, laminar flow hood (FFU), clean booth (removable clean booth) and self-purifier should be installed in some places that need to reach level 10-1000. Laser dust particle counter for measuring the cleanliness of clean rooms. 5. The clean room build should be designed with observation windows to facilitate visits.    Clean room equipment：  1、Air shower, changing room and clean room are the three basic components of the workshop purification system. The air shower is a passage in and out of the clean area. The high-speed clean air jetted out can effectively and quickly remove dust and bacteria carried by the human body. The clean room uses interlayer color steel plates to isolate the space and walls, the upper color steel ceiling is suspended, and the floor is paved with epoxy resin. 2、The most important role of air purification equipment in a clean room is to control the cleanliness, temperature and humidity of the atmosphere that products are exposed, so that products can be produced and manufactured in a good environmental space. This space is called a clean room. 3. According to the clean room management regulations, the dust-free purification level is mainly determined based on the number of particles per cubic meter of air that are greater than the classification standard. But for optical structures, a small dose may produce a very large amount, so air purification equipment is needed to build in clean room.     The above content is the purification equipment that needs to be used in the clean room. Different purification levels have different requirements for purification equipment. This mainly depends on the production needs of each enterprise. 

SEMICON SEA, the annual event of the global semiconductor industry, has come to a successful conclusion at the Marina Bay Sands Convention and Exhibition Center in Singapore. As the largest and most influential semiconductor exhibition in Southeast Asia, it brings together semiconductor equipment, materials and service suppliers from all over the world. Here, practitioners in the semiconductor market of various countries have obtained the most complete face-to-face technical exchange and cooperation platform to jointly explore new concepts, new trends and development space in the industry, and also create an excellent opportunity for enterprises to explore and develop the Southeast Asian market.   KLC brought a full range of air purification system solutions and other series of air filters and clean room equipment to the SEMICON SEA exhibition stage, winning the favor of partners from all over the world.       The exhibition is scheduled, and cooperation is boundless. In the future, KLC will continue to use "technological innovation" as the engine, constantly polish, and strive to provide more efficient and sustainable air purification system solutions for global customers. KLC SEMICON SEA 2025 has come to a successful conclusion. Thank you to everyone who pays attention to KLC. We will continue to work hard to contribute more to the air purification of the semiconductor industry!

Now there are many laboratories are using the air purification program, that is, we often say sterile laboratory, this laboratory generally needs to use the air shower room.    Must the sterile laboratory have an air shower?  Entering the sterile laboratory must be strictly through the air shower flushing channel. Because the human is a huge biological material, therefore, sterile laboratory to implement strict personnel and physical evidence separation." For this reason, in order to prevent contamination from irrelevant personnel entering the laboratory, a set of fingerprint access control system is set at the door of the sterile laboratory. In addition, the floor of the laboratory door is also laid with sticky mat, before entering the laboratory, feet step on the sticky mat can stick to the dust on the shoes and then enter the air shower buffer channel.    Sterile laboratory requirements:  1. The velocity at the air supply outlet in the dressing room and operation room of the purification room is ≥ 0.3m/s, the air speed in the air shower room is ≥ 15m/s, the static pressure difference between the operation room and the environment of the purification room is ≥5Pa, and the system noise is ≤60dB. 2. The second-level (P2) aseptic room is 10,000 grade and local 100 grade, which conforms to the current universal American federal 209E standard. 3. The secondary asepsis room includes high, medium and primary effect filter system, small central air conditioning system, laminar air supply and well return air. The body automatic induction system is adopted in the dressing room and air shower room. 4. In addition to the characteristics of the secondary aseptic room, the third-level (P3) aseptic laboratory also specially sets up electronic interlocking doors, interlocking of transfer Windows and doors, epoxy resin self-leveling ground and water disinfection facilities. 5. The secondary biosafety cabinet is configured. The laboratory and buffer room are both negative pressure Spaces. The relative pressure of the experiment room is -30Pa to -40Pa, and the relative pressure of the buffer room of the purification room is -15Pa to -20Pa.    The role of the air shower in the laboratory:  The main purpose of using the air shower is to ensure the isolation of the laboratory and the outside world. Air shower room can effectively solve the laboratory buffer scheme: air shower room is one of the best purification equipment into the laboratory buffer. It uses high-speed air to blow off and remove particles attached to the surface of clothing or materials. Prevent the staff to bring hair, dust, bacteria into the laboratory, to meet the strict dust-free purification standards of the work site.  

When it comes to livestock production, the health of the animals themselves, and the environmental problems of the sheds must be of the greatest concern. Many owners of animal husbandry are very surprised: "The same livestock, the same shed, the same feed, why our livestock morbidity is higher than others, production capacity is not as good as others?"   And next, Let us see what are the main reasons? And how to solve them.    Livestock temperature  The enclosure of the shed is better. This ensures the stability of the whole house environment. It will also be due to poor ventilation, leading to the heat in the house is not easy to emit, and then the temperature in the house is too high. Poor closure of the shed, ventilation is very good, but the winter temperature is low, will also lead to the house temperature is too low. The house temperature is too high or too low, will seriously affect the performance of livestock production.   The air humidity in the house is too high, the airflow speed is too fast, and the illumination is too little, which will lead to the temperature reduction. In turn, the air temperature is also too high, which reduces the productivity of livestock.    Dust and microbes  Due to the excretion of livestock itself, it will lead to the breeding of microorganisms, dust and bacteria. If the air circulation in the house is poor, microbes, dust, bacteria continue to accumulate, it will affect the health of livestock. Such as foot and mouth disease, influenza, panting and so on. This leads directly to reduced productivity and even death of livestock.    Harmful gas  Livestock respiration, excretion and decomposition of organic matter will lead to the appearance of harmful gases. Therefore, there is a great difference in the composition of the air inside and outside the house. Excessive accumulation of harmful gases can also directly affect the health of livestock, resulting in reduced productivity, and even death.     Now that we know these reasons, how can we solve the above problems?   Because the main thing is to improve the air environment in the shed, it is necessary to install ventilation system in the barn, in order to stabilize the air temperature in the barn. Through stable airflow, dust, microbes, bacteria and toxic gases will be brought out of the house, and fresh air outside the house will be introduced to balance the air quality inside the house.   Taking the pig farm as an example, we put forward the following ventilation methods to improve the air environment and the production capacity of the pig farm by combining various elements such as the season, the difference between male and female pigs and the actual pig farm environment:    Negative pressure ventilation filtration  Negative pressure ventilation is to install the main filter wall at the front end of the cooling water curtain, and install the ceiling filter box on the ceiling ventilation window.   In winter, fresh air enters the ceiling through the top ventilation window, filters through the ceiling filtration system and enters the pigsty, and exhaust gas is discharged by the fan.   In summer, fresh air enters the barn only after being filtered by the main filter wall, and exhaust gas is discharged by the fan. There is negative pressure inside the piggery.   ◆The negative pressure ventilation filter requires large area, low replacement frequency, low ventilation energy consumption, and strong regional applicability.    Positive pressure ventilation filtration  The main filtration wall is installed in the filtration room. The positive pressure fan is installed in front of the main filter wall. Fresh air enters through the filter screen and enters the main filter wall under the action of the fan.   In winter, the filtered air enters the ceiling through the ceiling ventilation window and enters the pigsty through the ceiling small window.   In summer, the filtered air passes through a wet curtain and enters the piggery. Exhaust gases are removed by shutters and the air pressure inside the house is higher than outside.   ◆ There is less risk of unfiltered air entering the house, which is the advantage of positive pressure ventilation. But higher fan power is the guarantee of reliable operation of positive pressure ventilation. The selected fan must be able to provide sufficient air volume under high static pressure difference.    Balanced ventilation or micro-positive pressure ventilation  Neutral ventilation is between negative pressure ventilation and positive pressure ventilation, and generally adopts a partial positive pressure way. Mainly used in boar station. Neutral ventilation combines the advantages of positive pressure ventilation and negative pressure ventilation. The front end is positive pressure inlet air and the back end is negative pressure exhaust air, forming an orderly ventilation flow direction. But relatively speaking, the investment is higher, the operating cost is better.   So, how to choose the appropriate filtration ventilation scheme?   ◆ The choice of filtration ventilation scheme depends on the air cleanliness level L6 or L9 of the pig farm and the location of the pig farm; Positive pressure ventilation filtration is the best choice for boar station and SPF breeding farm.Positive pressure ventilation filtration is the best choice for boar station and SPF breeding farm. The negative pressure ventilation filtration design is recommended for thermal emergency sensitive areas and pig breeds. Ensure good ventilation effect and low energy consumption to meet the actual production needs.    There are the following points to pay attention to in the use of air filtration system:  1) Before the piggery air filtration system is put into use, it is necessary to test the air tightness of the piggery, the installation of the filter and the airflow pattern in winter and summer to ensure the operation effect of the system. 2) If the system of the unit is not used, there should be detailed operation guidance for filter replacement. 3) When to replace the filter is also an issue we need to consider. The best scheme is to decide whether to replace the filter according to the pressure transformation of each layer (positive pressure air filter unit can be realized). However, many systems do not test the static pressure difference, and filters can be used to change according to the cycle.