Heat gun

Abstract

The invention discloses a heat gun, and belongs to the technical field of mechanical heating equipment. The heat gun comprises a shell, a main control board and a heat device; the heat device comprises a heating module, a fan and a motor; the shell is provided with a heat tube; the heating module is arranged in the heat tube; the heating module and the motor are both electrically connected to the main control board; a temperature detecting device and a heating indication device are arranged in the shell; the temperature detecting device comprises a detecting circuit board and an infrared detecting head; the heating module is provided with a detecting channel for enabling the infrared detecting head to receive external infrared radiation energy; and the heating indication device comprises a control substrate and an indicating lamp. Through the effects of the temperature detecting device and the heating indication device, a proper distance can be kept between the heat gun and a heated object, so that the heated object is located in a proper heated state, the potential safety hazard of melting or firing of the heated object caused by unknown or uncontrollable heating temperature is prevented, the heating effect is guaranteed, and the use safety is improved.

Description

technical field [0001] The invention relates to the technical field of mechanical heating equipment, in particular to a heat gun. Background technique [0002] A heat gun is a heating tool used to heat air to form a hot air flow. It has a variety of functions. Specifically, a heat gun can be used to remove old paint on metal surfaces, remove self-adhesive stickers, heat plastic hoses to bend them, Drying wet wood, heating shrinkage of packaging film and packaging tube, rust removal, heating shrinkage of polyethylene used to connect metals and heating softening of welds, etc., can also use the hot air blown from the gun core of the heating resistance wire Solder or remove components. [0003] Existing heat guns are generally provided with a temperature display for displaying the temperature of the hot air blown out by the heat gun, which is convenient for users to understand the working conditions of the heat gun. However, the temperature display on the existing heat gun ca...

AI Technical Summary

Problems solved by technology

However, the temperature display on the existing heat gun cannot effectively reflect the temperature of the heated object

When the distance between the heat gun and the heated object is large, the temperature of the heated object is low, the heating effect is poor, and the efficiency is low

When the distance between the heat gun and the heated object is small, the temperature of the heated object is high, which may cause the heated object to melt, cause a fire or other physical / chemical changes, and the operation safety is low

[0004] In addition, the existing heat gun generally adopts a linear shift structure or a push-button shift structure. When there are many wind gears, the linear shift structure has a long moving stroke, and the push-button shift structure requires a large pre-installation range. , the heat gun is not compact enough as a whole, and its volume has increased, making it inconvenient to operate and use

[0005] Moreover, the parts in the existing heat gun are generally fixedly connected by screws, and there are many assembly consumables, and other tools are needed for assembly, which is inconvenient for assembly and low in production efficiency, and cannot well meet the needs of modern production.

In addition, when the fixed connection between the components is realized by screws, there are defects that the screws are not screwed or the screws are not fully tightened, which will lead to unreliable fixation between the components and affect the normal use of the heat gun

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