How do you open the ventilator? What is the principle of the ventilation system

1.Natural ventilation is achieved by using air pressure.

In areas with a good external wind environment, wind pressure is the main means of achieving natural ventilation. Wind tunnel tests show that when the wind blows towards the building, it will generate positive pressure on the windward side of the building due to the obstruction of the building, and at the same time, the air flow will bypass the sides and back of the building, and negative pressure will be generated at the corresponding position.

2.Natural ventilation is achieved by using heat pressing.

Another principle of natural ventilation is to use the thermal pressure difference of the air inside the building, which is commonly referred to as the "chimney effect" to achieve natural ventilation of the building. Natural ventilation under the action of hot pressure is caused by the temperature difference between indoor and outdoor and the height difference between the inlet and exhaust outlets, and it is a ventilation method that takes advantage of the fact that the air density decreases with the increase of temperature. Using the principle of hot air rising, the exhaust vent at the upper part of the door, window and curtain wall can exhaust the dirty hot air from the room, and the fresh cold air outside is sucked in from the air inlet at the bottom of the door, window and curtain wall.

The hot pressing effect is related to the height difference between the air inlet and outlet and the temperature difference between indoor and outdoor. The larger the temperature difference between indoor and outdoor and the height difference between the air inlet and outlet, the more obvious the hot pressing effect. Different from the air-pressure natural ventilation, the hot-pressed natural ventilation is more suitable for the constant external wind environment and the unfavorable external wind environment.

3.Mechanically assisted ventilation.

In some large buildings, due to the long ventilation path and high flow resistance, natural wind pressure and thermal pressure alone are often not enough to achieve effective ventilation. Air pollution and noise are not good for human health, and in this case, mechanical assistance is often used to ventilate the room.

Window ventilator: a device installed on the outer envelope of the building (doors, windows, curtain walls) or between the wall and the doors and windows, which has certain wind pressure resistance, water tightness, air tightness, sound insulation and other properties in the working state, and can realize indoor and outdoor controllable ventilation. It can be mounted on any window type and position, on the window frame, on the sash or as part of the window sill in the lower part of the entire window sill.

Window ventilators can be installed horizontally or vertically; It can be mounted on the upper part of the glass or on the lower part of the glass.

Working principle: The outdoor air directly enters the room from the lower part of the ventilator, and the air pressure difference between the outdoor and indoor air is used to implement fresh air to flow through the working area with a small disturbance, and take away the indoor residual heat, residual humidity and pollutants from the upper return air outlet of the ventilator.

Natural ventilator: A window ventilator that relies on the difference in temperature between indoor and outdoor temperature, wind pressure, etc. to generate air pressure.

Working principle: The air inlet is installed at the wall and the exhaust outlet is installed at the roof, and the principle of natural convection is used for effective ventilation.

Wall-mounted ventilator: is a ventilator that hangs on the wall.

Working principle: By drilling a hole in the wall to arrange the intake pipe and exhaust pipe, the outdoor air enters and the indoor air is discharged. Complete organized ventilation to solve the problems of window ventilation in high-rise civil buildings and public buildings, heating in winter in heating areas, and ventilation energy loss in summer air conditioning in hot areas.

The ventilator is divided into open type and open and closed type, and the open ventilator has 24 hours of uninterrupted ventilation and is in an open state for a long time; The opening and closing ventilator is equipped with a valve plate and a control box, and the opening and closing of the valve plate are controlled through the control box, which can control the ventilation time of the plant and keep the plant warm in winter.

First of all, the natural ventilator is better, then it is a way of air exchange according to the local air pressure difference and the diffusion principle of gas caused by the natural environment.

How the ventilation system works:

1. Analyze the collected data such as outdoor temperature, outdoor humidity, indoor temperature, and outdoor dust.

2. Determine whether to start the fan to introduce outdoor cold air and discharge indoor hot air, and then realize the cooling in the base station and computer room, so as to reduce the use time of air conditioning to save electricity.

3. The system detects the indoor and outdoor temperature, humidity and dust in real time, and automatically controls the reasonable work of the fan, and achieves a reasonable temperature control with the air conditioner.

The ventilation system mainly refers to the realization of ventilation functions, including air inlets, exhaust outlets, air supply pipes, fans, cooling and heating, filters, control systems and other ancillary equipment.

The following text is excerpted from Zhang Xuefa's book "** Air Conditioning Cleaning Technology":

The air conditioning system and the ventilation system are inseparable, but in engineering, the regulation technology that only requires the control of indoor temperature is called heating or cooling, and the technology that keeps the harmful concentration of the indoor environment within a certain range of health requirements becomes ventilation, and only the technology that comprehensively treats the air is called air conditioning.

Among them, cooling and dehumidification are related to refrigeration. Since most systems are supplemented by ventilation systems to mechanically ventilate the room during transitional seasons or non-working hours, many parts of the air conditioning system and ventilation system are combined, which is usually called an air conditioning ventilation system.

Functional principle of ventilation system: ventilation system|The main control chassis analyzes the collected outdoor temperature, outdoor humidity, indoor temperature, outdoor dust and other data, and then determines whether to start the fan to introduce outdoor cold air and discharge indoor hot air, and then realize the cooling in the base station and computer room, so as to reduce the use time of air conditioning and save electricity.

The system detects the indoor and outdoor temperature, humidity and dust in real time, automatically controls the reasonable work of the fan, and achieves a reasonable temperature control with the air conditioner.

This article is maintained by Beijing AUCMA air conditioner.

The working principle of the fan is basically the same as that of the turbine compressor, but due to the low gas flow rate and the pressure change little, there is generally no need to consider the change in the specific volume of the gas, that is, the gas is treated as an incompressible fluid.

The relationship between fans and fans: fans are the customary abbreviations of gas compression and gas delivery machinery in China, and the fans commonly referred to include fans, blowers, compressors and roots blowers, but do not include positive displacement blowers and compressors such as piston compressors. Ventilator is a product type of fan, but people usually call the ventilator barrel a fan, which is another name for a fan.

Building ventilation system tasks.

Remove air pollutants from the building and replenish fresh air.

Expel hot and humid air from the room to cool down.

Harmful gases are emitted in the event of a fire.

The principle of action of the natural ventilation system: it is the flow of air under the pressure difference.

The working principle and function of the indoor ventilation system of fixed-frequency hanging air conditioner and its composition.

Ventilator is a general term for ventilation equipment used to enhance air circulation. There are many types of ventilators. It is mainly divided into natural ventilator and external power ventilator. There are two main categories of ventilators we are talking about: industrial ventilators and residential ventilators.

This is a roof ventilator with natural ventilation installed on the steel structure workshop.

The ventilator includes the ventilation floor. There are many ventilators, such as smoke exhaust skylights, power fans, ventilation balls, etc., in various forms, and the ventilation building is one of them, which is more detailed and easy to classify. It is convenient for those who need to find what they want more accurately.