To carry out various procedures in the construction and household sectors, it is sometimes necessary to quickly and effectively heat surfaces or objects. It is best to use a special device for this purpose. Let's look at what a hair dryer is, how it works and works, which one is better suited for a specific application, what technical characteristics need to be taken into account when choosing it, as well as what types of it exist and what their main features are.
The construction hair dryer is widely used in construction and home renovation Source machtz.com.ua
Construction hair dryer - device, principle of operation, application
A device that produces a directed flow of hot air to solve technical problems is called a construction hair dryer. In this case, it differs from household models in the higher value of the following parameters:
- Power ranges from 300 to 2500 W.
- The temperature of the supplied air flow ranges from 300 to 8000C.
- The volume of heated air produced is from 200 to 650 liters per minute.
The heat gun has a simple device and includes such working units as:
- Frame.
- Spiral heater.
- Fan with electric motor.
- Control elements – start button, setting operating modes, display.
The operating principle of the device boils down to the following algorithm:
- When you press the start button, the heating coil and the electric motor are activated simultaneously.
- Through the intake holes, air from outside is sucked in by a fan and passed through the heater.
- An air flow of a given heating level is pumped from the outlet, the nozzle.
The device of a technical hair dryer Source tmktools.ru
Setting the thermostat allows you to set the required level of air heating by increasing or decreasing the heat of the coil. At the same time, modern models have the ability to adjust the air flow speed, which makes it possible to solve various technical problems using the same device.
The main thing for which a construction hair dryer is needed is the ability to carry out the following series of operations:
- Drying putty, glue, stucco elements, gaps between tiles, insulation joints.
- Removing excess varnish or paint from furniture, windows, walls, parquet and other surfaces.
- Forming and shaping products made of PVC, plexiglass, acrylic, polyurethane and other synthetic materials.
- Defrosting locks, pipes, icy steps and cables.
- Destruction of colonies of ants, wood-boring beetles and other insects in walls, floors and other structural elements.
- Speeding up time and increasing the bonding area when gluing parts using contact adhesives.
- Pressing, soldering, shrinkage of PVC-based pipes, hoses and handles.
Thermal gun is used for installation and repair of pipelines Source stroy-podskazka.ru
- Welding pieces of soft flooring for various purposes - film, linoleum, tarpaulin, roofing materials, etc.
- Soldering pipes with tin or silver solder, as well as copper thin-walled pipelines, cables and wires.
- Bending of wooden products.
- Lighting fires in barbecues, fireplaces, barbecues.
Thus, with a construction hairdryer, you can do any suitable preparatory operations, which are based on heating up to several hundred degrees. In fact, it has all the capabilities that a standard blowtorch has. However, thanks to the power supply from the network, and not from the fuel tank, the use of heated air, not a flame, and the ability to adjust operating parameters, in contrast, a heat gun is much more convenient, safer and simpler.
Note! Despite the fact that a construction hair dryer is positioned as a universal device for solving various types of problems and in any conditions, you must not forget about following the rules for its operation. For example, it is unacceptable to subject the device to mechanical stress, shock, or even fall, especially when it is hot, since the heating element in working condition is very fragile and can break.
The use of a heat gun must comply with operating conditions Source stroy-podskazka.ru
Equipment
The basic equipment of a construction hair dryer, in addition to attachments, may include special scrapers, additional handles, adapters, welding rods, and a case. The most important of all of the above are the nozzles . They form a certain flow necessary for various jobs. By changing the air flow options, you can expand the capabilities of the device and its areas of application. Nozzles are cheap consumable items that can be easily replaced with new ones in case of loss or breakage. There are many options for making attachments depending on the needs of the user. We will look at the most basic ones :
- Round nozzles are best used for soldering or heating copper pipes or sealing products using welding tape (No. 1 in the figure)
- Flat nozzles are used to remove old coatings, such as varnish, paint, wallpaper, veneer. Or for deforming thin plastic (No. 2)
- Reflector nozzles are used to deform polymer pipes. They have a front rounded outlet that heats the pipe from both sides. This nozzle is suitable for pressing and heating heat shrink (No. 3)
- Crevice nozzles facilitate gluing of overlapping PVC sheets (No. 4)
- The cutting nozzles look like a narrow, flattened tube. It creates a concentrated, precise flow of heated air, with which it is possible to cut or shape polystyrene foam (No. 5)
- Side nozzles are very convenient for removing paint coatings from window frames when overheating of the glass is unacceptable (No. 6)
- Mirror nozzles are used for welding plastic materials. Heat from the air flow is returned to the part using a mirror (No. 7)
Another useful feature is the loop assist . This is more likely a design feature, but nevertheless, it is a very convenient addition. When mixing and heating solutions, you can hang the device at the required height and do the work with both hands . This can also be useful when it is necessary to direct a stream of heated air to a certain place for a long time. Special hooks and supports will help you install the equipment on a flat surface at the required angle. These two functions determine how the tool is parked. Don’t forget about the storage place for your device - a special case .
Using it during transportation will significantly
extend the life of your device.
Selection rules
In order to choose the right hair dryer, you need to consider the following number of characteristics:
- Limit temperature. In most cases, household models produce an air stream heated to 600-6500C. There are specimens capable of heating air up to 8000C. However, due to the high cost, it is not rational to use them in everyday life; most of all, they are intended for the professional sphere.
- Productivity, or the volume of heated air produced per unit of time. Mid-segment models produce from 200 to 600 liters per minute. In this case, the characteristic depends on the maximum developed temperature - the higher the heating, the higher the flow rate.
- Power. Modern devices differ significantly in this parameter. Their value varies from 500 to 2500 W and is directly determined by the two characteristics discussed above. In addition, the greater the power, the larger the dimensions and weight of the equipment.
- Air flow adjustment. This function may be useful when working with sensitive or light material. The parameter change can be either discrete (only 2 or 3 positions) or smooth.
Some heat gun models allow you to adjust the strength of the air flow Source prom.st
See also: Catalog of companies that specialize in doors, windows and related work
- Adjusting the degree of heating. Allows the technician to change the flow temperature for different jobs. The parameter adjustment in models is performed in different ways - both in several positions and smoothly.
- Support of the set temperature mode. A special controller remembers and maintains the operating heating level of the air flow, which not only ensures stable operating conditions, but also protects the coil from overheating. Choosing a construction hair dryer with this function is for professionals, since the cost of the models is very high.
- Cold air. Allows you to instantly cool the treated area to speed up subsequent procedures. Some models are equipped with a special separate nozzle for this purpose.
- Air intake filter. Protects the spiral from contamination and rapid failure. This function is useful when work is carried out in dusty air conditions.
- Control indication. For precise work, information on the heating level is especially relevant. Therefore, many models are equipped with displays that display the flow temperature. The devices may also have a conventional LED indication.
Technical hair dryer with a display showing operating parameters Source prom.st
- Overheat protection. If the heating level exceeds a critical value, the device will simply turn off. Otherwise, the spiral may burn out.
- Protective thermal casing. Protects the user and the processed material from high temperature exposure due to accidental contact. Can be removable or non-removable.
- Type and shape of the handle. For comfortable holding, the heat gun can be equipped with various types of handles - pistol, cylindrical, rotary, closed, etc. To prevent the device from slipping out accidentally, the surface of the handle has anti-slip pads.
- Elements for installing the device upon completion of work. This could be a loop at the base of the cord, or hooks on the side of the body. They allow you to hang or put the gun down after use, so that its hot surface does not touch objects.
A technical hair dryer should not be too heavy to allow it to perform the assigned tasks Source rezhemmetall.ru
Important! In order to determine which hair dryer is best suited for specific application conditions, it is important not only to choose it wisely based on its main technical characteristics, but also to take into account external parameters. This is primarily the weight, dimensions and length of the power cord. The device should not be excessively light, as this will indicate the poor quality of the materials of its parts. The optimal weight is 0.5-1 kg. For convenient operation, the cable length should be at least 2.5-3 m.
Tips for use
Any device must be used correctly and carefully . Especially with a construction hairdryer, since in fact, this is a very fragile device that does not tolerate shock , so to fix the hairdryer in the required position, be sure to use the special hooks or loops that we wrote about.
Do not use a hair dryer near flammable liquids. Since most hair dryers fail due to overheating , which happens when the device is used in a perpendicular position to the surface being treated, try to hold the hair dryer at an angle of 45º. This will not affect the quality of the work performed, but will protect your device from damage.
After finishing work, let the hair dryer cool completely and only then put it in the case. Never leave the device unattended . When working with a hairdryer, do not forget about your own safety . Never check the temperature of the air flow with your hands, this will inevitably lead to burns . When removing paint and varnish materials, always use a special scraper and wear a respirator . Ideally, use the hairdryer outdoors or in a well-ventilated area .
Varieties
Modern models of thermoguns differ in one or more characteristic features - which primarily determine the scope of their application. Based on this classification, there are the following main varieties:
- Rechargeable.
This type of thermal blower is equipped primarily with lithium-ion batteries. At the same time, the devices are distinguished by rather mediocre performance characteristics - a power of no more than 300 W and a heating level of 300-5000C with a productivity within 100 l/min. The main purpose is household work and short-term operations in hard-to-reach places.
Technical hair dryer with battery Source redtool.pro
Purpose of the heat gun
There is a wide range of jobs where a construction gun will come in handy. For example, if you need to dry glue or stucco joints in a short time. Using a heat gun, you can remove paint residue from windows or parquet.
By heating the air in a hair dryer to 500 degrees Celsius, you can work with plexiglass and acrylic. This power tool is also used for soldering PVC pipes.
It is not difficult to guess that the scope of application of a technical hair dryer is extensive. Having such a device will be very useful in the household. In the photo of a construction hair dryer you can choose the most attractive unit.
Video description
Video comparison of popular manufacturers of technical hair dryers:
Main features:
- Large set of attachments for small operations.
- Minimum power consumption.
- Precise temperature control.
Negative qualities are manifested in the unsuitability of the device for large jobs, difficult battery replacement and the need for frequent breaks. The TOP best are HL 1400 S, Steinel HL 1810 S and Makita HG651CK.
- Mini hair dryers.
Compact, convenient battery-powered models for small precision work with heating levels up to 300 degrees.
Pros:
- Ease of use.
- Ease of transportation.
- Small dimensions and weight.
The disadvantages are manifested in the small amount of work, limited functionality, the need for constant recharging and the difficulty of selecting a battery. The best models include Intertool DT-2416, Intertool WT-1020 and Craft CHG 2200E.
Recommendation! No matter in what area of construction, repair and home improvement a construction hair dryer is used, its operating conditions must strictly comply with safety requirements. For example, to prevent the heater from overheating and quickly failing, the nozzle during operation in relation to the surface must be directed at an angle of approximately 450, and not perpendicular.
Temperature support system
Some models of hair dryers have the ability to maintain a certain temperature regime. Working with a heat flow stabilizer makes it more comfortable. In addition, this allows you to save a significant amount of time.
Mostly this option is included in expensive professional hair dryers that are used in industrial facilities. At home, its presence is not necessary.
Briefly about the main thing
A construction hair dryer is analogous to a conventional one, but differs from it in greater power up to 2.5 kW, temperature up to 8000C and productivity up to 600 liters per minute. The principle of its operation is reduced to passing air through the intake of a powerful motor with a fan through a hot spiral. It is used in various fields - for drying surfaces, removing coatings, shaping the geometry of products, defrosting pipes and wires, fighting insects, heat treatment, and welding soft-melting materials.
When choosing a device, the main characteristics should be taken into account:
- Temperature.
- Power.
- Possibility to adjust air flow and heating level.
- Performance.
- Temperature support function.
- Blowing with cold air.
- Air intake filtration.
- Overheat protection.
- Parameter display.
- Type of handle.
- The presence of a thermal casing.
- Installation accessories.
Heat guns differ primarily according to their intended purpose: mobile battery-powered, for concrete, for soldering, for welding floor coverings, for roofing, for removing paint, for welding PVC, for installing sound insulation, for tinting, mini-hair dryers. Each variety has its own best models, pros, cons and application features.
Adjustments
When purchasing an industrial hair dryer, you need to pay attention to the ability to regulate the volume of air that is pumped. Unfortunately, not all types of this device provide such a function.
However, its presence makes it possible to regulate the air flow if the workpiece is too light. In this case, there is a threat that it will simply be blown away by the forced flow. If there is adjustment, this can be avoided.
comparison table
When choosing a hair dryer, you should first take into account its technical characteristics, which you can compare using a special table.
| Model | Power, W | Minimum/maximum operating temperature, °C | Temperature adjustment | Maximum air flow, l/m | Weight, kg | Average price, rub |
| Kolner KHG 1500 | 1500 | 375/495 | stepped | 480 | 0,9 | 864 |
| Bort BHG-1600-P | 300/500 | 420 | 0,85 | 954 | ||
| BISON FT-1600 | 1600 | 350/550 | 550 | 0,7 | 1 290 | |
| Hammer HG2000LE | 2000 | 350/600 | 500 | 0,75 | 1 279 | |
| Interskol FE-2000E | 80/600 | smooth | 600 | 0,8 | 1 900 | |
| BLACK+DECKER KX2001 | 50/600 | 500 | 0,8 | 1 932 | ||
| Metabo H 16-500 | 1600 | 300/500 | stepped | 450 | 0,7 | 3 200 |
| Makita HG5012K | 350/500 | 500 | 0,6 | 3 480 | ||
| Hitachi RH650V | 2000 | 50/650 | smooth | 0,8 | 5 430 | |
| BOSCH GHG 20-63 Professional | 50/630 | stepped | 0,65 | 6 787 |
