For chimneys, baths, fireplaces and saunas, it is recommended to install a heat-resistant fan. 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 extremes.
High Temperature Fan Description
A high-temperature fan is very similar in appearance to a conventional duct device. The main differences are in the constructive content, but they are noticeable 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 in which the motor is mounted, and separate compartments for installing the impeller.
You can find models of high-temperature fans with additional impellers. They are necessary for blowing the axles of the engine to provide additional cooling.
The body of the device must be painted with special heat-resistant paints and coatings that protect the surface from the negative effects of high temperatures.
The high-temperature channel fan is equipped with additional devices that are not found in conventional fans: cold air intakes, bypasses, radiators.
Purpose and tasks
The fan for high temperatures 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, a heat-resistant fan will solve the following problems:
- carry out the movement of hot air masses through the chimney through the air ducts to all rooms of the house;
- create traction in the fireplace, stove;
- to 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, pancake houses. A device has been widely used in production for equipping ventilation in drying rooms, electric switchboards and rooms where metal is welded and cut.
For the fireplace
A heat-resistant fan for a fireplace has a special operating principle. It must provide constant draft in the chimney. You can purchase a device equipped with a thermostat. It automatically turns on as soon as a critical temperature is reached.
In the manufacture of equipment, special heat-resistant paints, as well as speed controllers, are used. Thanks to this, heat-resistant appliances can operate for more than 30,000 hours without interruption.
Using a heat-resistant fan allows you to create a common heating system for the entire building.
For the sauna
For baths and saunas, high-temperature equipment with protection class IP 42 and higher is used. This prevents moisture from entering the structure. Devices are installed in the ceiling or on the wall.You can use it to adjust the temperature in adjacent rooms.
For chimney
High temperature fan up to 300 degrees for the chimney is designed to remove gases from the pipes. It is recommended to mount it as far as possible from the combustion chamber, this will protect the equipment from overheating and prevent reverse traction.
The principle of operation of the device
The peculiarity of the operation of equipment depends on the design and field of application. The heat-resistant laid-on type fan is installed directly into the ventilation hole in the wall. It is designed to discharge hot air into the ventilation channel or directly to the street.
The heat-resistant duct fan is mounted in the duct system. It can be mounted to a wall or ceiling. This application minimizes fan noise. In addition, equipment owners have the opportunity to organize the right ventilation system with all the necessary parameters for taking hot air.
The main feature of all heat-resistant fans is an increased degree of protection against moisture and equipping with bearings of a closed form. Due to this, the service life of the equipment is extended.
Advantages and disadvantages
The heat-resistant fan for a 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 location can easily be changed;
- economical energy 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 characterized by high performance at low energy costs, a high level of efficiency is characteristic.
Heat-resistant equipment has its drawbacks:
- The device is characterized by low pressure, because of this it can not be used in long pipelines, and also if there is a negative pressure of two media.
- The equipment must not be used in explosive atmospheres, in addition, it is not suitable if there is a large fraction of impurities in the air.
- 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 improperly balanced, a loud noise is generated.
The disadvantages are not very significant, if necessary, they can be eliminated independently.
Varieties of high temperature fans
Heat-resistant exhaust fan can be in centrifugal or 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 invoice or duct, it is made of a material that is resistant to soot, grease and dirt. Roof devices are not susceptible to corrosion. Cases and blades are covered with special heat-resistant paint, aluminum is used for manufacturing.
Centrifugal performance
Centrifugal duct devices are designed for ventilation systems with the movement of hot air in the conditions of differential power supply. This provides protection against overheating. Centrifugal fans are installed in fireplaces to organize the transfer of heat through air ducts over long distances to all rooms.
Scope of application
Heat-resistant metal fan 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:
- places of catering, where stoves, grill are used;
- production facilities where welding is carried out, metal cutting is performed, drying plants are working.
Installation of equipment is carried out during the assembly of the supply and exhaust system. Explosion-proof models can be used for ventilation of industrial buildings and residential buildings, which are able to clean the room from explosive gases. For the chemical and oil refining industries, heat-resistant fans are manufactured 300 degrees and above, the maximum indicator of most models reaches 450 degrees. Such devices are made of carbon or stainless steel, then they are coated with chemically resistant paint.
Popular high temperature models
The company is considered the most popular manufacturer of heat-resistant fans. Dospel. The main feature is the electric motor protection system. Due to this, overheating during shutdown is excluded. This is achieved thanks to the equipment of a separate chamber for the impeller and electric motor.
Key Features of Dospel Models:
- special openings for heat dissipation are built into the equipment case;
- high performance;
- high level of pressure;
- equipped with a thermostat, which gives a signal to turn on the fan as soon as a certain temperature is reached.
Fans for the fireplace are characterized by a special design, which includes:
- engine overheat protection;
- radiator for cooling;
- a working chamber and a separate compartment for the engine;
- aluminum blade for cooling.
Good European quality characterized by company models Belvent. The main advantage of the equipment is as follows:
- all devices meet high European requirements;
- reliability of structures, ease of installation;
- wide scope.
High-temperature fans are excellent for ensuring the movement of air masses at any temperature. The use of heat-resistant structures in fireplaces allows you to most effectively organize heating throughout the house.
