It is hard to imagine a modern heating technology without various mechanisms and devices. Thanks to technological advances could be equipped with the usual for us all solid fuel boilers with additional electromechanical devices. It became possible to adjust automatically the intensity of combustion, improve the technological capabilities of ventilation. A special place in the automation of basic processes takes fan used for solid-fuel boilers. With the device connected perhaps the most important phase of the entire heating system.
Why the need for a fan. Its main functions
Solid fuel boiler in a conventional representation of a heating device, where the main operation is carried out by burning fuel. In the presence of traction and natural air flow, the combustion intensity is weak, low heat output, respectively. The fireplace can be given as an example. The natural flow of air does not allow much ignite the flame in the furnace, so that the heating device has limited technological capabilities.
It is quite another matter when the work is included blower. In the furnace of the heater is injected additional air volume. Combustion becomes intense, the fuel burns completely, giving the maximum number of calories.
Therefore, for the current models of solid fuel boilers, virtually all kinds and types, the fan is one of the most important elements of the control system. Usually heaters automation kit includes a supercharger today, induced draft fan and control unit. Correct and proper installation on the boiler equipment such devices and appliances, provide your unit a reliable and balanced work.
On a note: combustion process for 90% dependent on the supercharger operation. Through the action of this device, is injected into the combustion chamber air, the combustion rate increases accordingly increasing the efficiency of the heating equipment.
To date, the domestic and foreign industry produces a huge amount of domestic fans (coolers), specially designed for mounting on the heater. Choosing a booster for your unit, you must focus on the boiler capacity and your own household needs. Solid unit with a fan - a high-tech and efficient heating machine. All processes starting from flue gases drawing, finishing work best combustion chamber depend on fan operation.
In other words, there are exhaust fans to be installed in the chimney and the blow devices specially designed for air injection into the furnace of the heater. Typically, the blower is used with difficult to kindle the fuel. Coke, coal or wet wood burn poorly in the beginning. Therefore, for better combustion in this situation, we use the boost device. Other fuels, such as pellets, briquettes and dry firewood, need constant puffing air. Installing fans on the boiler, you will be able to achieve economical fuel for solid fuel boiler, boiler equipment will significantly increase safety. No more reasons to worry about the quality of the combustion in the furnace, and worry about the job drawing.
The apparatus and device types ventilators
Due to its functional characteristics and parameters, fans are divided into three types, each of which is determined by the design of the engine. Used for this purpose motors can operate as AC and DC. The advent of electronic equipment has created the preconditions for the active use of ac motors. Unlike DC motors, electric AC practically devoid of drawbacks. Simple and unpretentious motor design allows to mass-produce a variety of electromechanical devices. Most of the fans is equipped with such a motor.
Today, the following types of fans can be found on the market:
- Electrical apparatus commutated motors (EC);
- Products equipped with synchronous motors;
- blowers with asynchronous motor.
All products have their own distinct advantages and disadvantages. In the case of the electric motor can be switched to talk about the same quality. The apparatus itself is capable of changing the number of revolutions to give a corresponding signal to the control unit. Here you can talk about a wide range of adjustment of the fan. However, the device has a significant disadvantage - the device is not compatible with most home temperature controls. In addition, this technique is the road to the price.
Speaking of fans with synchronous motors may be to focus on the following: the device are quite cheap and easy to manufacture. However, equipment of this type have certain disadvantages. In such devices the minimum torque during launch, and a small range of speed control.
For reference: usually fans with synchronous motors give it a permanent discharge of the air mass in the combustion chamber. Synchronous motors, which are equipped with devices have sufficiently large dimensions. Typically the blower motor is carried into a separate unit. When working at low speed for synchronous motors frequent winding overheating.
As for the speed range, the value is not high. On some models of the range regulated within 30-70%, and from 90 to 100%. This feature is specific to the synchronous motor. According to experts, fans with synchronous motors is not recommended to equip domestic solid fuel boilers. Microprocessor temperature controllers poorly compatible with the device, in which a limited number of turns and the power is in the rigid framework.
Last, the third type of fans used in modern heating systems, has a number of advantages. Asynchronous motor makes it easy to adjust the number of revolutions. On some models, there is even Raversi. The main advantages of this device are as follows:
- Such fans are simple and easy to operate;
- Efficient construction;
- Normal control circuit;
- It supported on all currently existing MRI.
The only drawback, which is peculiar to asynchronous motors - high inrush currents.
conclusion
Boilers that are currently massively equipped with fans, get bigger automated heat source. It used to take a lot of patience, that would withstand the roar of the compressor, the booster air into the combustion chamber. Today, most boilers, large and small, are equipped with low-noise and high-performance devices.
Thanks to the fan structure (improved aerodynamics blades) significantly increased productivity. The volume of the supplied air could change due to the configuration of the blades increase twice. Due to the wide number of speed range, able to achieve good flexibility in the electromotive group. You can adjust the speed, referring to the slightest change in temperature.
