Device and method for controlling startup of fan and air heater using device

Abstract

The invention relates to a device and method for controlling startup of a fan and an air heater using the device. The device for controlling startup of the fan comprises a voltage diversion module, ashort circuit module and a control module, wherein the voltage diversion module is connected with the fan in series and is used for voltage diversion of the fan, the short circuit module is connectedwith the voltage diversion module in parallel and is used for short circuits of the voltage diversion module in work, and the control module is connected with the short circuit module and is used forcontrolling the short circuit module not to work when the environment temperature of the fan is lower than a preset temperature and controlling the short circuit module to work when the environment temperature of the fan is higher than the preset temperature. According to the device and method for controlling startup of the fan and the air heater using the device, when the temperature is low, under-voltage startup of the fan is achieved; and after the fan is started, it can be ensured that the fan operates at a normal voltage. By adoption of the device and method for controlling startup of thefan and the air heater using the device, the problem that the fan cannot be started under a low temperature and the problem that the fan cannot operate normally after being started under the low temperature are solved.

Description

technical field [0001] The invention relates to the technical field of fan control, in particular to a device and method for controlling fan startup and a heater using the device. Background technique [0002] Existing air heaters all generate heat through a PTC (Positive Temperature Coefficient, positive temperature coefficient) heating element, and then the fan positioned behind the PTC heating element radiates heat to the PTC heating element. The hot air blown out by the radiator is used to heat the room. [0003] The fan on the heater is divided into AC and DC. The AC fan is directly powered by the mains, and the DC fan is generally powered by the mains after step-down and rectification. However, whether it is an AC fan or a DC fan, it is inevitable to increase the starting power in a low temperature environment. This is because in a low temperature environment, the lubricating oil in the fan will thicken, or even solidify, resulting in poor lubricating effect of the l...

AI Technical Summary

Problems solved by technology

This is because in a low temperature environment, the lubricating oil in the fan will thicken or even solidify, resulting in poor lubricating effect of the lubricating oil and increased resistance for the fan to start.

In addition, after the fan is used for a period of time, the lubricating oil and grease will evaporate, making it more difficult to start

This has led to the fact that the newly bought heater is normal when it is purchased in the mall, and it cannot be started after a period of time at home. Even the heater is normal when it is used during the day, but at night or when it encounters a sudden Phenomenon that it cannot start after cooling down

The essential reason for the above phenomenon is that the friction of the fan becomes larger at low temperature, and the starting power increases correspondingly, while the input power is constant, resulting in insufficient power of the fan controller, and the power is reset, which causes the fan to not start normally.

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