Heating equipment has many classifications. One of the main features of the separation of boiler plants is the type of output of combustion products. In particular, there are units with direct and closed smoke exhaust. In the first case, the burning is carried out naturally through a special channel connected to the equipment by means of a nozzle, and the second option does not at all provide for a system for removing combustion products. This function is implemented in a third-party mode by separate settings. Usually it is performed by smoke exhausters and fans for boilers, which forcibly remove the same smoke, purifying the air in the room.
Auxiliary equipment for heating systems
The technical organization of the boiler involves the use of a group of draft machines. Such units are designed to ensure the optimal working condition of the heating equipment with the elimination of the risks of overheating and the removal of combustion products, if it is meant to be connected to the air outlet. At the same time, smoke exhausters and fans for boilers are distinguished, the functions of which may vary.
In practice, the use of boilers with such equipment has several positive effects. The main one is the possibility of maximum burnout of gas mixtures. Modern models of heating systems in some versions include pyrolysis systems that provide double combustion of fuel with the release of more heat. In turn, the fan for the boiler in the natural mode of operation provides the same principle, ultimately reducing the financial costs of operating the equipment.
How is the fan arranged?
The classic design of fans for heating equipment provides for an engine, retracting cuffs, impeller and, of course, a housing that protects the filling from damage. Also in the device, an important role is played by mechanical parts that realize the movement of the working parts of the installation. For example, a gas boiler fan is supplied with a whole group of bearings. Actually, malfunctions in this part are the most common and arise due to poor-quality installation. Experts also note the importance of the impeller itself, which should have a solid hold and protection against foreign objects, including debris.
Varieties of fans
There are two design concepts for this type of fan. These are centrifugal and traditional models with a discharge effect. Two fans differ in the method of supplying air masses. The first option is considered universal and is suitable for most heating units. The second solution in modern versions is more functional. Such a fan for a solid fuel boiler is installed on the ash pan door and provides an effective forced air flow. This scheme of operation allows the user to rationally use the potential of the structure in terms of forcing air flow, while maintaining the possibility of optimal regulation of the amount of oxygen entering directly into the combustion chamber.
Main characteristics
The efficiency of the draft equipment is evaluated according to three main characteristics - productivity, power and pressure level. In terms of performance, the blower fan can have up to 10 m 3 / h. That is, this is the volume of air mass released within one hour. True, most standard models provide only 3-4 m 3 / h. This value is directly related to the power of the installation, which on average varies from 5 to 10 kW. But the quality of the function will depend on the engine speed - an average of 1000 rpm.
As for pressure, here too the indicators are quite dense - at least in the middle segment. For example, a small fan for a boiler can provide 50-60 daPa. Another thing is that high-performance industrial systems can operate in 200-300 daPa modes.
How to choose a fan?
Technical parameters are the primary criterion for selecting the optimal system. Next, you should refer to the functionality of the unit and the design. It has already been noted that draft equipment may fail due to, at first glance, minor installation errors. The quality of installation and adjustment directly depends on the reliability of the fundamental structure of the structure - from the housing to the parts from the element base. Therefore, choosing a fan for the boiler, you should take a close approach to the analysis of the build quality, materials used and other properties of the equipment that affect the mechanical resistance. In addition, it makes sense to evaluate the capabilities of the unit in conjunction with automatic systems. Programmable relays with built-in tuning programs today cover not only boiler stations, but also related technical equipment. Moreover, in the case of combining two units into one system, the task of interacting their functions as a result of processing related operational parameters is simplified.
How much does a fan for a boiler cost?
The cost is formed by several factors, but mainly the size of the installation, the quality of the element base, the characteristics of the power plant, etc. are taken into account. The most affordable solutions in this segment can be purchased for 5-10 thousand rubles. Of course, we are talking about products of optimal quality by modern standards. For example, a fan for a 50 kW WPA boiler can be purchased for 7 thousand rubles. More productive models from the industrial segment are also available for 20 thousand rubles, but in this case we are talking about units whose function is calculated on an area of about 500-600 m 2 .
Conclusion
Manufacturers of boiler equipment strive to optimize the additional functionality as much as possible already in the basic designs. But, as practice shows, individual components are not only more efficient, but also more reliable during operation. Even a typical blower fan outperforms the built-in traction control mechanisms due to the large volume of service. Another thing is that auxiliary equipment can become a burden on the heating complex, necessitating the use of additional maintenance measures. But this cannot be said about the convenience of the regulation process itself. Especially when it comes to automated systems, the operation of which is greatly simplified.