Heat guns: purpose and features of choice

Where and what is it used for

Taking into account the processes that occur during the operation of heating equipment of this kind, its use in a room where people are regularly located should not be. A gas heat gun is commonly used in industrial, warehouse, construction, agricultural facilities.

We watch the video, scope and principle of operation of the device:

With regard to functional applications, it is equally popular to use this technique as a heater for large-scale areas and for technological drying. By the way, the last of the named possibilities, which the gas cannon possesses, makes it possible to significantly speed up the execution of construction work. Using this technique, you can quickly dry the treated surface and prepare it for further manipulations.

Heat gas cannons - features and benefits

The scope of application of heating and ventilation devices is practically limitless. These devices are effective in rooms of any size and height and operate on natural gas.

The advantages of these devices are as follows:

• Economical - low consumption of fuel and electricity, even with round-the-clock work;
• Efficiency - fast warming up of premises and constant maintenance of the required temperature in large production halls, in open areas (construction sites);
• High safety - the ability to use in fire-hazardous premises, hangars, auto repair shops, garages, agricultural facilities (in cowsheds, poultry houses and pigsties).

Gas cannons run on liquefied gas, and for the operation of the automation and the fan, they consume (in a minimum amount) electricity from the network or an autonomous generator. Controlling the device does not take much time - they only need to be connected to a gas cylinder and plugged into the network. The only condition is regular ventilation of the heated room, if it is closed.

The devices allow you to keep warm in rooms in which there are no permanent heating sources installed (or they do not work efficiently enough). Despite their small size, gas cannons are able to warm up a huge volume of air in just a few minutes. Gas cannons are most popular at construction sites, warehouses and any other facilities where it is necessary to provide comfortable working conditions for personnel during the cold season.

Distinctive features of work and design

A gas heat gun operates on a similar principle to its counterparts: air passes through the combustion chamber or heating elements, which is supplied to the device by means of a powerful fan. The latter, in turn, is set in motion with the direct participation of the engine. A gas heat gun differs from an electric one by the presence of a burner. The fuel is ignited using a piezoelectric element, which is used today in gas boilers.

The device and design of a gas cannon

The high-performance gas cannon is powered by a liquefied gas cylinder. As it becomes empty, it is necessary to replace it. At an average level of performance, the cylinder can be enough for a long period of time - up to 50-60 hours of continuous operation. In this case, a compact gas heat gun consumes 0.8-1 l / h.

Heat gun application

All models of heat guns are perfect for industrial, warehouse, and construction work.As a rule, in such cases, heat guns are chosen on fuel (gas, kerosene, waste oil, diesel fuel), since they are effective over a large area and have a high efficiency. But many can also be used to heat homes and garages. Electric heat guns with a power of no more than 2 kW are most suitable for this. At home, thermal equipment can be used not only for heating housing, but also for drying cellars and heating garages. Also, during repairs, it performs the function of drying painted, pasted over plastered surfaces.
A heat gun can effectively dry crops if moisture gets into storage (grain, vegetables), produce dried fruits, heat greenhouses and greenhouses. When buying a heat gun, you should select the device for individual needs and parameters:

• Room area;
• Characteristics of the house (brick, wood), as well as thermal insulation of walls and ceilings (insulated or not);
• Personal requirements for the device (size, installation location, distance to the outlet).

If the device has automation. Then you can set different modes for heating the house. For example, at different times of the year, day and night. For heating a house, this is a profitable investment of money, since such a device combines good price and quality. The durability of the heat gun can be noted.

How to choose the right one?

First of all, to determine the performance of such equipment, it is necessary to find out what power the device is suitable for performing its functions with minimal losses. For this, the parameters of the room where the compact gas heat gun will be used are determined.

Having calculated its volume, it is necessary to find out exactly how good the thermal insulation of the object is. For the calculation, it is recommended to obtain the value of the coefficient, which will be equal to 1 with a good level of insulation or 4 in the absence of thermal insulation. A value of 2 or 3 characterizes the average level of room insulation.

To determine the power, you also need to know the coefficient of temperature difference between the outside and inside of the object. This subtracts one value from another. Now you can multiply the volume of the room and two factors (insulation and temperature difference). The resulting value is measured in kcal; to convert it to kW, it is enough to divide the result by 860.

A high-performance gas heat gun is also selected based on the speed of work. The more efficiently the device functions, the faster the room will warm up. In order to roughly imagine how long the equipment will work without shutdown, you should pay attention to the selection and fuel consumption.

Frequently bought models

Model Master BLP 10M

The gas compact heat gun of the manufacturers Master, Balu, Moller is in demand more than others. For example, the Master BLP 10M model is designed for 10 kW, its speed corresponds to the value of 300 cc. m / h, fuel consumption is very modest - 750 g / h.

The device is single-phase, weighs only 4 kg, and operates on liquefied propane. If you need to pick up gas cannons, the described model will cost 4,700 rubles.

On the same site, you can choose an order of magnitude more productive device of the same brand, but at a very modest cost. For example, the Master BLP 53M gas cannon is offered at a price of 10,900 rubles, but the user receives a unit operating at a speed of 1450 cc. m / h, fuel consumption will be higher - 3 780 g / h. The power of the unit is impressive - 53 kW. All models described are equipped with a piezo ignition.

Watch a video review of the Ballu BHG-20 S model:

Another option is the Ballu BHG-20 S model, offered at a price of 5,000 rubles. It works with propane and butane, the maximum power value is 18 kW, while the fuel consumption is relatively low - 1 200 g / h.The capacity of the device corresponds to a speed of 500 cc. m / h. The more power and the degree of efficiency of such a technique, the larger its dimensions will be.

Today, users often began to select equipment on the Internet, the gas cannon was no exception, the Leroy Marlene store does not offer the widest range of such equipment, but the products are of high quality.

How does a gas cannon work

Heating boilers

The main / All about heating / Heating boilers / How does a gas cannon work

31 March 2015

With the advent of cold weather, the issue of heating the room becomes very relevant. For these purposes, various types of equipment are used, among which gas cannons have gained wide popularity. This type of heating is just an ideal option for country houses, as well as country houses.

Good to know Types of gas cannons How to make a gas cannon How a cannon works with a gas pressure regulator How a homemade gas cannon works (video)

Pros of a gas cannon In order for this device to turn into a full-fledged heating unit, it will be enough to connect it to the centralized gas supply. Fuel consumption can range from 0.6 to 7 l / h.

The scheme of the goose cannon

How does a gas cannon work and where is it used

In order for this device to turn into a full-fledged heating unit, it will be enough to connect it to the centralized gas supply. As a rule, propane-butane is used as a gas. Since the gas does not emit practically any odor during combustion, this installation is absolutely safe. Gas leakage is practically impossible due to the fact that the units have a multi-level protection system.

An important feature of gas cannons is that they can be used not only to heat the room, but also to dry various surfaces. These include concrete surfaces as well as plaster and other surfaces. Due to its high efficiency, the device can be actively used in large areas, warehouses, hangars, etc. A distinctive feature of the device is its autonomous operation, thus, the heating temperature is controlled by a thermostat.

Gas cannon design

The device consists of a number of elements, among which it is necessary to highlight: a heat exchanger, an automatic device-controller and a fan. The device needs electricity only to rotate the fan, and therefore very little is used. Due to the combustion of the gas, the heat exchanger is heated. Air masses under the action of the fan pass through the heat exchanger and, when heated, spread throughout the room.

Types of gas cannons

Direct heating

A feature of the design of gas guns of the first type is that the gas burner in them is absolutely not insulated with anything. Due to the very high efficiency, the air in the room warms up perfectly, at the same time, combustion products get into the air, and therefore the room should have excellent ventilation.

Indirect heating

Cannons using a non-direct principle of operation have special combustion chambers. Special branch pipes are connected to these chambers, through which the combustion products are discharged into the chimney. This type of equipment will be the best solution for heating rooms with a large number of people. This information is more related to stationary guns and, as a rule, factory production. However, besides them, there are also portable mobile gas cannons. They include a gas cylinder. For ease of use and transportation of the device, wheels and handles are mounted on it.

When operating mobile guns, you must strictly follow all safety rules! The operating time of such equipment will depend on the volume of the gas cylinder.With regard to fuel consumption, it can fluctuate and be from 0.6 to 7 l / h. Also, with the help of special adapters, the device can be simultaneously connected to several gas cylinders, which will increase the time of its operation. Among the types of equipment, you can find guns with thermostats. This type of them is considered the most economical. In this case, the device will turn off when the set temperature is reached.

How to make a gas cannon

To create a gas cannon, take:

• a metal pipe in order to supply fuel to the system;
• drill and drill bits for metal; grinder; steel sheet;
• metal strips two millimeters wide;
• a metal pipe with a thickness of 8 mm to create a heat exchanger;
• car fan with a minimum power of 12 V;
• reinforcement for the construction of the structure itself.

First of all, with the help of a grinder, it is necessary to cut the pipe, since gas will enter the system through it. To lengthen the pipe, it is necessary to weld another of the same diameter to it. The hole should be enlarged so that it is about five millimeters and the jet should be lengthened by two mm. The body of the device should be made longer; for this purpose, you need to take an 8 cm metal disk and fix it under the extension cord itself. Then you need to drill eight 1 cm holes.

It is necessary to make a clamp with which the heat exchanger will be attached. Next, you need to take two metal plates and weld them crosswise. This will significantly increase heat transfer.

Heat exchanger manufacturing

For these purposes, an iron pipe, 8 cm long with not very thick walls, is useful. Next, you need to weld the end to the pipe wall, in which you drill a hole. An extension from the burner will pass through this hole, and the clamp will need to be bolted. The next step is to continue assembling the heat exchanger. With the help of a grinder, a hole is made in the heat exchanger and an 8 cm tube is attached to it, through which hot air will enter the room.

You need to take a car fan and mount it on the other end of the exchanger body. Thanks to the fan, heated air will be supplied to the room. At the final stage, it will be necessary to drill holes through which the gas can be ignited. Also, for this you need to worry about the structure on which the gas cannon will be mounted. You can use a frame made of iron reinforcement for these purposes.

How a gas cannon works with a gas pressure regulator (video)

Test run

Before operating the equipment, it is necessary to carry out a number of preparatory work.

• Light the lighter through the hole in the firebox.
• Start the gas supply by opening the valve.
• After the gas ignites, the lighter should be put back.
• Turn on the car fan.

If everything is done correctly, the device can be put into operation.

Briefly, the manufacture of a gas cannon will look like this:

• a metal extension disc must be attached to the burner;
• it is necessary to lengthen the pipe in order for gas to enter the device;
• for good heat transfer, iron plates should be installed;
• on one side of the extension, install a clamp and fix the heat exchanger itself;
• assemble the burner device;
• holes should be made in the heat exchanger for hot air to escape through them;
• a metal ring should be welded to the second end of the pipe;
• install a switch on the heat exchanger to turn on the fan;
• assemble the fan.

The body of the gun looks like a pipe, and therefore you need to take not a thick piece of steel, cut it to size and roll it into a pipe.

How does a self-welded gas cannon work (video)

Gas cannon advantages

• High safety of the device;
• Minimum time for installation and dismantling works;
• Minimum time to prepare equipment for operation;
• Compactness and excellent ergonomics of the device;
• Rapid heating of air throughout the room;
• Possibility of self-regulation of heating temperature;
• Very high efficiency rates.

Photo: gidotopleniya.ru, v-teplo.ru, pl41.com, remonti-ka.ru

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Electric heat gun

The air in this model is heated using an electric heating element, a spiral or ceramic heating elements. Heating elements are more reliable in operation and do not "burn" oxygen. Spirals are quite dangerous, as they heat up to very high temperatures. More efficient, but expensive, is the option with the installed ceramic heating element. The design has a thermostat that prevents overheating. But if it happens, then the automation turns off the unit. Electric guns are quite safe and environmentally friendly. There are no harmful emissions. Switches on the housing control the heating mode and thermostat operation.

electric cannon

The heat gun can be connected to single-phase and three-phase networks (voltage 380 V), but this depends on the power of the device. The electrical appliance can be installed even in rooms where there is no ventilation. Of course, the undoubted advantage is that there is no need to add fuel and the device can work for a long time. Also, the positive factors include the absence of open fire in the device and noiselessness. The electric heat gun is quite suitable for residential use.

Causes of malfunction of heat guns

The most common reasons that can provoke a heat gun breakdown include:
• Poor energy source (fuel); • Violations of operating rules; • Changes in electricity.

As a rule, the heating elements will wear out first. But if there is an air heating element in the cannon, then it cannot be repaired. It can only be replaced.

More frequent breakdowns include malfunctions with electric motors. The reason for this is fluctuations and disruptions in the supply of electricity.

It is better to buy a heat gun in specialized stores, where consultants will help you choose the right unit, and the products have a warranty. Also, in large stores, there are service centers that will carry out diagnostics, and high-quality repairs, if necessary. In order to avoid malfunctions, all operating conditions of the device must be observed. It is necessary to carry out all the necessary cleaning, filter rinsing and refueling, correctly turn the device on and off.

Heat gun design

The heat gun is a mobile and practical heater that is quite simple in design. The air that enters through special holes is heated by heating elements or a burner. Also, in addition to the heater, there is a mechanism inside for directing the air flow. With the help of fans, warm air fills the entire room. The fan in such equipment is very powerful (much more powerful than a household one), it is thanks to this that heating occurs immediately.
The body of the heat burner is made of metal due to the high temperature inside the device. There are also protection units and automation. These accessories ensure the safety of the device, especially if it is left on for a long time. Since if the flame goes out or the fan stops, the automatic equipment turns off the gun, preventing overheating, and controls the air temperature.

By energy sources, heat guns can be divided into:

• Gas;
• Electrical;
• Infrared;
• Liquid fuel;
• Water.