Controller of quick heating and double constant temperature electric iron

Abstract

The controller of quick heating and double constant temperature electric iron is one for electric iron with both dormancy and protection functions. The controller has two signal input ends. The first input end is a temperature sensor connected to a measurement amplifier, and the measurement amplifier has output connected to a difference amplifier, a set / measurement switch and a overheat detector. The second input is a human body inducing electrode, and the human body inducing electrode has output connected to a double point temperature setter and a dormancy controller. The dormancy controller has output connected to an AC switch, the double point temperature setter has output connected to an automatic temperature setting converter, the setting detector has output connected to a setting / detecting switch, and the setting / detecting switch has output connected to a digital display.

Description

technical field [0001] The invention relates to a controller for a solid fast-heating double-point constant temperature electric soldering iron with sleep and protection functions, and belongs to the technical field of electric soldering iron temperature controller manufacturing. Background technique [0002] The electric heating type soldering iron is composed of a heating core, a heat conductor, a thermal head and auxiliary working parts such as handles and wires. During the process of heat conduction from the heating core through the heat conductor to the thermal head, it is subject to the strong thermal resistance of the thermal resistance interface composed of several air layers and different materials. The result is: [0003] 1. The temperature of the heating wire is too high. The metal heating wire works near the limit temperature and is in a hot state. [0004] 2 Large temperature difference heat conduction The temperature difference between the heating core and the...

AI Technical Summary

Problems solved by technology

[0004] 2 Large temperature difference heat conduction The temperature difference between the heating core and the thermal head is very large, the heat transfer efficiency is low, and the heat transfer is slow

[0005] 3. Severe oxidation reaction Due to poor heat conduction, the temperature of the heating wire is much higher than that of the thermal head and placed in the air, the oxidation reaction of the heating wire is severe

[0006] 4. The temperature rise of the thermal head is too slow. Due to the strong thermal resistance of the thermal resistance interface composed of several air layers and different materials, the thermal head reacts slowly and lags behind in control. Only by increasing the thermal head to store energy to meet the welding requirements. When the thermal energy needs to be continuously welded, it is often necessary to wait for the thermal energy to be replenished, which is a waste of copper and affects work efficiency.

At present, there is no electric soldering iron controller that can control the two-point constant temperature of the fast-heating electric soldering iron, and the temperature control of the electric soldering iron is still in a relatively primitive control mode.

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