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Fan for the boiler. Heating equipment

Heating equipment has many classifications. One of the principal features of the separation of boiler plants is the type of output of combustion products. In particular, there are units with a direct and closed smoke outlet. In the first case, a natural discharge of burning is carried out through a special channel connected to the equipment by means of a branch pipe, and the second option does not at all provide for a system for the evacuation of combustion products. This function is implemented in third-party mode by separate settings. Usually it is performed by smoke exhausters and fans for boilers, which forcibly remove the same smoke, cleaning the air in the room.

Auxiliary equipment for heating systems

The technical organization of the operation of the boiler implies the use of a group of draft machines. Such units are designed to ensure the optimum operating condition of the heating equipment, eliminating the risks of overheating and the removal of combustion products, if the connection to the air vent is implied. In this case, smoke exhausters and fans for boilers are distinguished, the functions of which can differ.

In practice, the use of boilers with this equipment has several positive effects. The main one is the possibility of maximum burn-out of gas mixtures. Modern models of heating systems in some versions provide for pyrolysis systems that ensure double combustion of fuel with the release of a greater amount of 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 does the fan work?

The classic design of the fan design for heating equipment involves the presence of an engine that retracts the cuffs, the impeller and, of course, the casing that protects the filling from damage. Also in the device 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, the problems in this part are the most common and arise because of poor-quality installation. Experts also note the importance of the impeller itself, which must have a strong fixation and protection from foreign objects, including garbage.

Types of fans

There are two concepts for the design of fans of this type. These are centrifugal and traditional models with the effect of forcing. Two fans differ in the way of supply of air masses. The first option is considered universal and suitable for most heating units. The second solution in modern designs is more functional. Such a fan for a solid fuel boiler is installed on the ash door and provides an effective forced air intake. This scheme of operation allows the user to rationally use the design potential in terms of injecting air flow, while maintaining the possibility of optimal regulation of the volumes of oxygen entering directly into the combustion chamber.

Main characteristics

The efficiency of the traction equipment is evaluated according to three main characteristics - capacity, power and pressure level. In terms of performance, the fan can have up to 10 m 3 / h. That is, it 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 plant capacity, which on average varies from 5 to 10 kW. But the quality of the function will depend on the engine speed - on average 1000 rpm.

As for the pressure, here too the indicators are quite dense - at least in the middle segment. For example, a small fan for the boiler is capable of providing 50-60 daPa. Another thing is that high-performance industrial systems can operate in the 200-300 daPa modes.

How to choose a fan?

Technical parameters are the primary criterion for choosing the optimal system. Next, you should refer to the functionality of the unit and the structural design. It has already been noted that draft equipment can fail due to, at first glance, minor errors in installation. The quality of the installation and adjustment directly depends on the reliability of the basic device design - from the body to the parts from the element base. Therefore, when choosing a fan for a boiler, one should closely approach the analysis of the quality of the assembly, the materials used and other properties of the equipment that affect the mechanical resistance. In addition, it makes sense to assess the possibilities of the unit in conjunction with automatic systems. Programmable relays with embedded tuning programs today cover not only boiler stations, but also associated technical equipment. Moreover, in the case of combining two aggregates into one system, the task of interacting their functions as a result of processing adjacent operational parameters is simplified.

How much does the fan for the boiler cost?

The cost is formed by several factors, but mainly takes into account the size of the installation, the quality of the element base, the characteristics of the power plant, etc. The most affordable solutions in this segment can be purchased for 5-10 thousand rubles. Of course, we are talking about the production of the best quality by modern standards. For example, a fan for a WPA boiler with a capacity of 50 kW can be purchased for 7 thousand rubles. More productive models from the industrial segment are available for 20 thousand rubles, but in this case we are talking about units whose function is calculated on an area of 500-600 m 2 .


Manufacturers of boiler equipment strive to maximize the optimization of additional functionality already in the basic designs. But, as practice shows, individual components are not just more efficient, but also more reliable in the process of operation. Even a typical blower fan wins the built-in traction control mechanisms due to large volumes of maintenance. Another thing is that auxiliary equipment can become an encumbrance of the heating system, stipulating the need for additional maintenance measures. But this can not be said about the convenience of the regulation process itself. Especially when it comes to automated systems, the operation of which is greatly simplified.

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