Negative pressure fans can be applied in everyone's daily life, but what makes negative pressure fans work? In fact, it is a machine that utilizes the basic principles of air circulation and negative pressure ventilation cooling to achieve actual cooling and ventilation effects. Low energy consumption, sturdy and durable, affordable. But how does the negative pressure fan start? What should I pay attention to?

Before starting the negative pressure fan, the regulating damper at the inlet of the centrifugal fan should be strictly closed to prevent misoperation and starting with load.

Check if there are any issues with the lubricating grease level of the sleeve bearing, the power supply condition of the cooling water pipe, the completeness of the coupling, and whether the anti impact plate is turned off.

Pay attention to the startup time and no-load current for any issues.

After the ammeter indicates the restoration of normal no-load current, the opening of the intake valve can be adjusted to a suitable position.

Verify that there are no abnormalities during the operation of the negative pressure fan.

What are the commonly used negative pressure fans in daily life?

When it comes to negative pressure fans, I believe everyone is familiar with them. I have told you at least a few dozen times. However, "Where does negative pressure fan usually occur?" Therefore, I will talk about this matter with everyone below.

1、 In agriculture and animal husbandry, negative pressure fans have long been used for greenhouse planting. Planting orchids or green plants can also use negative pressure fans.

2、 Animal husbandry, which is extended by greenhouse seeds, is the application of animal husbandry. As we all know, the natural environment of chickens, ducks, geese, and pigs directly affects the yield and survival rate of products. That is to say, the quality of the environment is related to the returns of animal husbandry.

3、 Industrial and Tuhe enterprises used to grow orchids, so many bosses have turned to using them for cooling industrial factories. More than a decade ago, this idea was implemented to this day. Negative pressure fan centrifugal fan is often seen, such as garment factory, shoe factory, small toy hardware factory, etc.

4、 In public places, almost all internet cafes and restaurants are equipped with negative pressure fans, which have low costs, high work efficiency, and can improve the harsh environment with dense population. Some large shopping malls, halls, fitness clubs, subway stations, and other places can all be used.

How is the workshop industrial air cooler endothermic reaction? With the rapid development of the economy, more enterprises will assemble industrial air coolers in workshops to solve the problem of cooling and natural ventilation in the workshops. Due to the improvement of daily life, many people have increasingly high requirements for office environments. Without a good work atmosphere, not only can we not get in touch, but we also cannot retain people.

The hot working atmosphere can also affect the work efficiency of employees. Due to the fact that the industrial cooling fan in the workshop can cool down 100 square meters in an hour and provide natural ventilation, only 1 kilowatt hour of electricity is required, and the cooling effect is also good. However, there are only so many companies using the industrial cooling fan in the workshop for cooling and ventilation. However, many companies are full of curiosity. How can the industrial cooling fan in the workshop cool down in order to save electricity and achieve such a good cooling effect? When it comes to how industrial air coolers in the workshop cool down, it's actually a very brief response. The industrial air cooler in the workshop uses the specific gravity of water for endothermic reaction in the distillation process, just like in hot summer, it is cooler to stay in the place with water, because the heat generated in the air is absorbed during the water distillation process.

There are four wet curtains in the industrial air conditioner in the workshop, which can increase the contact surface between water and air. When the industrial air conditioner in the workshop is turned on, water will wet the curtains. Subsequently, when the external gas evaporates according to the wet curtain, the water inside the wet curtain can completely absorb the heat generated in the air, resulting in a significant cooling effect. This is the basic principle of industrial air cooling in Ningbo workshops. Now, do you understand how industrial air coolers in workshops in Ningbo absorb heat?

Professional knowledge of daily maintenance of industrial air coolers in the workshop

One prerequisite is to choose high-quality industrial air coolers for the workshop. If the quality cannot be guaranteed, there is no way to increase the service life. The industrial cooling fan itself, air ducts, and leaves in the workshop must use qualified raw materials, and the overall design should be scientific to avoid various common faults caused by low exhaust air volume, low air discharge, and high noise. The iron frame, air supply and ventilation ducts, specialized air outlets, air nozzles, and other related materials of the industrial cooling fan machine in the workshop must also be qualified to avoid affecting the service life of the machine; The quality of specialized electrical accessories for machine equipment needs to be standardized, otherwise it will also affect the working quality and service life of industrial air coolers in Ningbo workshops.

Secondly, if it is an industrial air conditioner in a workshop with high high-tech content, some low-tech machinery and equipment cannot recognize the level of dust blockage on the equipment, and cannot automatically clean stains, resulting in a certain degree of common faults, which can affect the service life of the industrial air conditioner in the workshop.

Once again, it is necessary to manually clean it regularly to avoid clogging the dust collection net or volatile holes. Irregular cleaning of industrial air coolers in the workshop can also lead to the deposition of stains on the equipment basin, causing common faults, seriously affecting the application, and continuing to reduce its service life.

Finally, when not in use, rinse the frost layer and ice cubes in the finned tube radiator of the industrial cooling fan in the workshop with clean water, drain the water in the water tray, and dry the water droplets with an axial flow fan. When the workshop industrial air conditioner is not used for a long time, all refrigerant in the finned tube radiator should be cleaned first, and then the gate valve in the return valve should be opened to maintain a dry natural environment and avoid the workshop industrial air conditioner motor from getting damp and paint falling off.

1. The interval between the back of the refrigerated air cooler and the refrigerated heat insulation board is less than 300MM, which is conducive to the circulation of steam in the refrigerated air cooler and convenient and quick maintenance in the future

2. U-shaped oil valve bend should be set at the air outlet of the cold storage fan to facilitate and fast return of frozen oil to the cold storage refrigeration unit

3. U-shaped bend should be set at the outlet of the cold storage air cooler to cause liquid sealing and avoid natural ventilation inside and outside the storage

Cold storage air cooler has the following advantages

1, the use of spray painting technology, corrosion resistance, appearance of air

2. Reasonable characteristic design, convenient assembly and maintenance

3, uniform wind speed, high heat transfer efficiency of cooling tower

4. Low noise and stable performance before the original assembly, all the pressure and nitrogen flushing treatment

Air cooler can cool air exchange, dust removal and smell, is a kind of multi-functional natural ventilation and cooling mechanical equipment, and the advantage is relatively green environmental protection, capital distribution cost is relatively low, and the application of air cooler is very common, can basically include all fields of application. So, what is the cooling principle of the air cooler mastered by the air cooler?

Air cooler, also known as mobile environmental air conditioning, can be designed for natural ventilation and cooling in accordance with the principle of water evaporation and digestion. The floor area of volatilization affects the cooling floor area. Air cooler is a type of energy saving and environmental protection products without refrigeration units, no refrigerant and no copper pipes. Its 1.1kw point is 1/8 of the traditional air conditioning, which can save a lot of power installation project consumption. In the case of its work, it can inhale the outdoor steam body and pass through the cooling and cooling water curtain, digest the heat and temperature inside, and transport it into the room and indoor air pollution for convection heat transfer, to ensure the actual effect of cooling.

The use of air cooler is more green, the application of the situation of power consumption is not very high, the cost of use is relatively low, at the same time, because of its cooling characteristics, not easy to cause industrial waste gas, not easy to cause air pollution sources, can do 4-10℃ cooling effect, set ventilation, air cleaning ash as one, but also can improve the oxygen content of the air, Covers an area of 100-300 flat hair meters.