Negative pressure fans are the ventilation and cooling equipment that many breeding plants choose, but what is the structure of negative pressure fans? What are the characteristics and advantages? Do you understand? Let ’s take a look today!

Structure of negative pressure fan

1. The material classification of negative pressure fan can be divided into iron box (ordinary fan), glass fiber reinforced plastic fan, plastic, aluminum, stainless steel fan, etc.

2. The main structure of negative pressure fan. Fans can be classified according to the direction of air flow, and are divided into main flow, diagonal flow, mixed flow, centrifugal and axial negative pressure cross flow type.

3. According to the flow direction after the airflow enters the impeller, it can be divided into axial fan, centrifugal fan, diagonal flow and mixed flow fan.

4. The fan can be divided into pressure according to the local use of the fan (hereinafter referred to as the pressure of the fan) and the external and internal explosion-proof motors at the port channels, and the local fans are extracted in the sealed structure of the main structure of the explosion-proof motor explosion-proof negative pressure fan (hereinafter referred to as the extraction fan ).

5. The fan can also be a horizontal pressure, or the pressure of two or more fans. 4-72 is single-stage compression, such as high-speed wind turbine is multi-stage fan pressure.

6. The fan can be divided into axial fan, mixed flow fan, roof fan, air conditioner fan, etc.

7. Fans and fans can be divided into low-pressure medium-pressure fans and high-pressure fans according to pressure.

Features of negative pressure fan

1. Installed in the workshop window, generally choose vents, external pumping, odor gas removal; general chemical plants and other applications are more. The return on investment is high, and the investment cost can be recovered within a year or so.

2. Energy saving: Low power consumption, only 10%-15% of traditional air conditioners. In the hot summer, use the water curtain to control the temperature of the workshop, the temperature is within 28 degrees Celsius.

3. Environmental protection: no chlorofluorocarbons. Good cooling effect. Turbidity, hot inside, and smell of air circulation to replace emissions. Effective control of the indoor environment, different indoor wind speeds, causing convection effects, your people feel comfortable and abnormal, which is more effective than air conditioning.

4. Reduce infectious diseases and effectively prevent the sudden large-scale spread of influenza and other viruses. Birds, mosquitoes, and flies are the vectors of infectious diseases. Since the water-ventilated ventilation system is sealed by negative pressure, the probability of vector transmission will be reduced, which will enable staff to work in a comfortable, safe and secure environment.

Powerful advantage of negative pressure fan

1. Low investment and low energy consumption. The same cooling rate, one-time investment of about one-sixth of the air conditioner, the operating cost is about one-tenth of the air-conditioning;

2. The cooling effect is remarkable, and the temperature can be reduced to about 28 degrees, which is consistent with the human body temperature. If the water in the well is better than the water in the tank, you can compare the effect of the air conditioner.

3. The air is clean and humid, and the air cleanliness is 99%.

The structure, characteristics and advantages of the negative pressure fan are introduced here, and I hope to help everyone!

1. Wet curtains are used to cool the air cooler, which is the same as pumping water continuously from the water tray, conveying it through the pipeline, and spraying it evenly from the nozzle to the filter layer through the water distribution spray system. After the air is drawn in through the air cooler, the moisture in the wet curtain exchanges the heat in the air, and then evaporates the heat in the water, so as to transport fresh and cool air into the room and reduce the indoor temperature.

2. The wet curtain has the characteristics of fast water absorption, fast diffusion, and high water resistance. It can absorb a large amount of water and can play a humidifying effect. It is suitable for large plantations and greenhouses and other environments with high indoor humidity requirements. According to the requirements of the use environment, adjust the humidification effect of the air cooler.

3. The material contained in the wet curtain itself is not easy to cause allergies. It is made of green and environmentally friendly nano materials, which can inhibit the growth of bacteria and maintain the freshness of indoor air. The wet curtain has high air permeability and corrosion resistance, and can effectively filter out impurities in the air. It should be noted that after daily shutdown, the water supply needs to be stopped and the fan should continue to run for more than half an hour to ensure that the wet curtain is dry before shutting down the device to avoid the growth of bacteria and algae.

The air cooler is not used all year round, but most companies only maintain the equipment during the operation of the air cooler. In fact, the quality of the equipment, the level of refrigeration efficiency and daily maintenance are inseparable. The following introduces the use of the air cooler Maintenance requirements before, after and during use.

What are the requirements for maintaining air coolers?

1. Before preparing to use, clean the surrounding environment of the equipment, especially at the inlet and outlet of the cooler to see if there is any object blocking. Check whether the fan blade is firm and the integrity of the wet curtain. Clean and strengthen the ventilation ducts to ensure that the water inlet and drain pipes are unobstructed.

2. During the use of the air cooler, the wet curtain and filter screen should be cleaned to prevent the growth of bacteria due to the accumulation of large amounts of dust impurities. The chassis should be cleaned every day to ensure that the water quality is clean and free of pollution. When the equipment does not stop running for a long time, it needs to be cleaned regularly every month to ensure the smoothness of each channel.

3. When the shutdown is not in use, the water in the air cooler needs to be drained clean, the power supply is stopped, the water supply operation equipment is stopped, the wet curtain and the filter are dried, and the air cooler can be covered and protected if possible.

Traditional air conditioners have high energy consumption and high operating costs, which limits purchases to a certain extent. The evaporative Cixi air cooler embodies the characteristics of energy saving, humane, beautiful, environmental protection, etc. It is electronics, textile, shoemaking, plastic, machinery workshop, cigarette factory, modern home, office, supermarket, hospital, casino, waiting room, etc. Ventilation and cooling of the environment provide the perfect solution.

The advantages of evaporative Cixi cooler compared with central air conditioner:

1. The evaporative Cixi air cooler uses water evaporation for refrigeration, with a long air supply distance and a large air volume, which can make the temperature of the enclosed place evenly distributed and have the function of filtering. The indoor environment is comfortable, the oxygen content is high, and the air is fresh. The traditional central air conditioner directly uses Freon for refrigeration. The temperature difference of the supply air is large, the air volume is small, and the room temperature is not easy to be uniform. In addition, the ventilation function is poor, and it is not suitable for semi-closed places. If it is used for a long time, it is easy to get "air conditioning disease".

2. The service life of the evaporative Cixi air cooler is double that of the traditional central air conditioner, the overall failure rate is low, and the equipment maintenance is simple and convenient.

The evaporative air conditioner has a small one-time investment, and the overall operation efficiency is high, and the operating cost is saved. Taking 2000 square meters of space as an example, 20 evaporative air conditioners are used as the host, calculated based on one hour full load, and the operating power is 20KW. The central air conditioner (180 hp) operates 180 KW per hour, which is calculated based on 10 hours of operation per day, saving 48,000 yuan in electricity bills per month. Energy saving up to 89%, introduction of evaporative Cixi air cooler

Evaporative Cixi air cooler features:

1. Significant cooling effect: in humid areas (such as the southern area), it can generally achieve a significant cooling effect of about 5-10 ℃; in particularly hot and dry areas (such as the north and northwest areas),

The temperature fluctuation can reach about 10-15 ℃.

2. Low capital cost and no occupation of construction area: compared with the traditional compressor air conditioning system, the cost is less than half of it

, And the equipment does not occupy any building area.

3. Easy to protect and install: The system is simple, easy to install and protect quickly and without professional protection personnel.

4. Prevent the air from drying: it can moisturize the skin and has certain benefits to the skin.