It is recommended to install a heat-resistant fan for chimneys, baths, fireplaces and saunas. This is equipment that can withstand the highest temperatures up to 200 degrees. If a fireplace heating system is organized in the house, heating is carried out due to the movement of hot air from the fireplace through the air ducts. The fan's task is to withstand extreme temperatures and changes.
Description of high temperature fan
The high-temperature fan is very similar in appearance to a conventional duct device. The main differences lie in the constructive content, but they are visible only to professionals.
The hot air fan must be made of heat-resistant material. The design of the electric motor must be equipped with a special radiator, which is equipped with sealed bearings. Some models of high-temperature fans have separate compartments for the motor and separate compartments for the impeller.
You can find models of high-temperature fans with additional impellers. They are necessary for blowing the engine axles in order to provide additional cooling.
The body of the device must be painted with special heat-resistant paints and coatings that will protect the surface from the negative effects of high temperatures.
The high-temperature duct fan is equipped with additional devices that are not available in conventional fans: cold air intakes, bypasses, radiators.
Purpose and tasks
The high temperature fan is also called heat-resistant and heat-resistant. Its main purpose is to remove hot air from a room or equipment.
For domestic purposes, such devices are most often aimed at removing moisture and odors from saunas and baths. In addition, the heat-resistant fan will solve the following tasks:
- carry out the movement of hot air masses through the chimney through the air ducts to all rooms of the house;
- create cravings in the fireplace, stove;
- act as a heat exchanger between adjacent rooms.
For commercial purposes, a high-temperature chimney fan is used in public baths and saunas, bakeries, cooking rooms, pancakes. The device has found wide application in production for arranging ventilation in drying rooms, electrical panels and rooms where welding and cutting of metal is carried out.
For fireplace
The heat-resistant fireplace fan has a special operating principle. It must provide constant draft in the chimney. You can purchase a device equipped with a thermostat. It switches on automatically as soon as the critical temperature is reached.
In the production of equipment, special heat-resistant paints are used, as well as speed controllers. As a result, heat-resistant appliances can operate for more than 30,000 hours without interruption.
The use of a heat-resistant fan allows you to create a common heating system for the entire building.
For sauna
For baths and saunas, high-temperature equipment with protection class IP 42 and higher are used. This prevents moisture from entering the structure. The devices are installed in the ceiling or on the wall. You can use it to adjust the temperature in adjacent rooms.
For chimney
A high-temperature fan up to 300 degrees for a chimney is designed to remove gases from pipes. It is recommended to mount it as far as possible from the combustion chamber, this will protect the equipment from overheating and will not allow back draft to form.
The principle of operation of the device
The peculiarity of the equipment operation depends on the design and the area of its application. The heat-resistant surface-mounted fan is installed directly into the ventilation hole in the wall. It is designed to discharge hot air into the ventilation duct or directly outside.
The heat-resistant duct fan is installed in the air duct system. It can be wall or ceiling mounted. This method of application minimizes the noise generated by the fan. In addition, the owners of the equipment have the opportunity to organize the necessary ventilation system with all the necessary parameters for the intake of hot air.
The main feature of all heat-resistant fans is a high degree of protection against moisture and equipped with closed bearings. This extends the service life of the equipment.
Advantages and disadvantages
Heat-resistant fan for sauna, bath, chimney has a wide range of advantages:
- designs are simple and reliable;
- low metal consumption is characteristic;
- ease of installation, mobility of equipment, if necessary, the installation site can be easily changed;
- economical power consumption;
- in the event of a breakdown, the repair of such equipment is carried out simply, without the need for large financial costs;
- axial models are distinguished by high performance at low energy costs, a high level of efficiency is characteristic.
Heat-resistant equipment also has its drawbacks:
- The device is characterized by low pressure, because of this, it cannot be used in long pipelines, as well as if there is a negative pressure of two media.
- The equipment must not be used in an explosive atmosphere, and it is not suitable if the air contains coarse particles.
- Due to the rotating blades, there is a danger to workers who are nearby. To protect them, you have to build reliable protective equipment in the form of gratings and fences.
- If the elements are not properly balanced, loud noise is generated.
The disadvantages are not very significant, if necessary, you can eliminate them yourself.
Varieties of high-temperature fans
The heat-resistant exhaust fan can be of centrifugal and axial design. Most often they are used for installation in ventilation ducts, but you can find designs that are used without air ducts.
Axial execution
In homes and commercial premises, axial thermal fans are installed:
- on the ceiling or walls;
- inside the duct;
- on the roof at the end of the chimney.
If the fan is overhead or ducted, it is made of a material that is resistant to soot, grease and dirt. Roof-type devices do not corrode. The hulls and blades are coated with a special heat-resistant paint; aluminum is used for manufacturing.
Centrifugal execution
Centrifugal duct devices are designed for ventilation systems with hot air movement in conditions of power supply differential. This provides protection against overheating. Centrifugal fans are installed in fireplaces to organize heat transfer through ducts over long distances to all rooms.
Scope of application
Heat-resistant metal fan is designed for use in emergency hoods. The power of such devices allows you to quickly clean the room from gas and smoke. The scope of such equipment:
- catering places where ovens, grills are used;
- production facilities where welding works are carried out, metal is cut, and drying plants are in operation.
The equipment is installed during the assembly of the air handling unit. For ventilation of industrial buildings and residential buildings, explosion-proof models can be used, which are able to clean the room from explosive gases. For the chemical and oil refining industries, heat-resistant fans of 300 degrees and higher are produced, the maximum indicator of most models reaches 450 degrees. These devices are made of carbon or stainless steel, then they are coated with a chemically resistant paint.
Popular high temperature models
The most popular manufacturer of heat-resistant fans is the company Dospel... The main feature is the electric motor protection system. This prevents overheating during shutdown. This is achieved by equipping a separate chamber for the impeller and the electric motor.
The main characteristics of the Dospel models:
- special openings for heat dissipation are built into the equipment case;
- great productivity;
- high pressure level;
- equipped with a thermostat that gives a signal to turn on the fan as soon as a certain temperature is reached.
Fireplace fans are characterized by a special design, which includes:
- protection of the engine from overheating;
- radiator for cooling;
- working chamber and separate engine compartment;
- aluminum paddle for cooling.
Models of the company are characterized by good European quality Beltvent... The main advantage of the equipment is as follows:
- all devices meet high European requirements;
- reliability of structures, ease of installation;
- wide range of applications.
High-temperature fans are excellent for moving air masses of any temperature. The use of heat-resistant structures in fireplaces allows you to organize heating as efficiently as possible throughout the house.
