Working principle

  After power on, the blower blows the air into the heater, making the air pass through the spiral electric heating wire evenly from the inside and outside. The heat generated by the electric heating wire after power on exchanges with the cold air passing through, so as to raise the air temperature of the air outlet. The K-type thermocouple at the air outlet feeds back the detected air temperature to the temperature controller in time. The instrument monitors the actual working temperature according to the set temperature, and transmits the relevant information back to the solid-state relay to control whether the heater works. At the same time, the fan can use the air volume regulator (frequency converter, air door) to adjust the air volume.

  2080 non-magnetic nichrome wire is electrified to heat the air as the hot air source, which is clean, sanitary and in line with environmental protection.

Built in anti dry burning device.

  With the ingenious wind tunnel design, the air passes through the inside / outside of the spiral heating wire evenly, the heat exchange is nearly 100%, and the wind pressure loss is less.

  The micro-computer PID / SSR control of the hot air blower has the advantages of high precision, fast feedback and long-lasting durability.

  Equipped with multiple overheat and overload protection devices to fully ensure the safety of the equipment, which can operate continuously for 365 days a year.

  The air outlet is equipped with K-type thermocouple for direct detection and control, and the air outlet temperature is constant.

  Fiber thermal insulation cotton insulation, strong shell, safe and reliable use.

Continuous use temperature can reach 350 ℃, widely used.

  With the patented cooling device, the continuous air inlet temperature can reach 230 ℃, and the air volume can be adjusted by frequency converter, which is more energy-saving, highly controllable and less heat loss.

  The standard hot air blower adopts the main electrical controls of international brands (such as frequency converter, PID temperature controller, SSR, circuit breaker, intermediate relay, magnetic switch, etc.); the precision of PID temperature controller is ± 0.1%, and it is equipped with remote switch.

  The economic hot air blower adopts the main electrical controls of international brands (such as PID temperature controller, SSR, circuit breaker, intermediate relay, magnetic switch, etc.), without frequency converter, but with motor protector; the accuracy of PID temperature controller is ± 0.1%.

PID temperature controller

  In addition, due to different development and application conditions, the heating part uses nickel chromium wire, stainless steel heating pipe, iron chromium heating wire and infrared heating pipe according to different environment, and in addition to K-type temperature sensing element thermocouple, E-type thermocouple and PT100 thermal resistance.

  As for the fan part, in addition to the fact that the insulation level of the better motor is f or above, and the aluminum shell motor itself is heavy due to sufficient materials, it is also necessary to have built-in over temperature (generally caused by the over limit of the air inlet current or the high ambient temperature) protection device.

  In addition to the performance and accuracy of the control elements, the more automatic protection functions (such as over temperature and over-current protection of the heating core, over temperature and over-current protection of the motor, over temperature protection of the environment, dumping protection, over temperature alarm of the air outlet, etc.) the better. It is better to transmit these alarm signals to PLC.

Classified editor

  Hot air blower (also known as hot air generator, industrial hot air blower, hot air blower, with different names due to different habits and uses of different countries and regions) is basically composed of heater, blower, control circuit and combined carrier device. According to different needs, there are many types of hot air blower

  General purpose type: general air outlet 100 ~ 250 ℃ (maximum 350 ℃)

  Portable type: small and light single-phase type, suitable for small heating needs

Protemp fuel hot air blower

650 ℃ high temperature type: suitable for heat shrinking or high temperature heating

Explosion proof type: for places requiring explosion-proof

Hot air circulation type: hot air can be heated and then blown out, saving power and reducing surrounding temperature

  High pressure type: suitable for heating and drying of long and short distance pipes

Strong wind type: can increase heat and improve drying efficiency

Mold special mold: designed for the special environment of mold workshop (large dust, high ambient temperature)

Low temperature type: designed for the environment temperature lower than - 40 ℃

High altitude type: designed for areas above 1000m (such as Tibet)

Installation note edit

Indoor dry place that can avoid rain and snow, avoid humidity;

Hot air blower and operation diagram

Good ventilation, do not use in sealed box;

Keep away from inflammable, explosive and other dangerous goods and gases;

  During installation, the air outlet must be tilted 15 ° up and 10 ° down, and the left and right tilts of the machine body shall be used within 15 °;

  The air inlet shall not be blocked, and the air outlet shall be connected with the piping covered with thermal insulation materials. Pay attention that the piping shall not be too long, too thin, too bent or too much.

Matters needing attention

I. in order to prevent fire or explosion, use diesel or kerosene. Do not use gasoline, naphtha, paint thinner, alcohol or other highly flammable fuels.

II. Fueling

  The relevant personnel for fueling must be familiar with the manufacturer's instructions and the relevant regulations for safe fueling of hot air blower.

Hot fan diagram

1. Only diesel or kerosene specified by hot air engine can be used.

2. After all the flame indicator lights are off and the hot air fan is cooled, fuel can be added.

3. When fueling, check whether there is leakage at the connection between oil pipe and oil pipe. Before the operation of the hot air blower, any leakage must be repaired.

4. The fuel reserve of buildings near the hot air blower shall not exceed the fuel consumption of the hot air blower in a day. A large amount of fuel reserve must be placed outside the building.

5. All fuel storage places shall be at least 1m away from the hot air blower, flamethrower, welding equipment and similar ignition sources (except the fuel storage with the hot air blower)

6. The fuel storage shall be limited to the area where the fuel is not allowed to penetrate or is not ignited in the low-lying area as far as possible.

7. Fuel storage must be consistent with official regulations.

3. Do not use a hot air blower where there is gasoline, paint thinner or other highly flammable gas.

Heat of use