Fire prevention control method of fixed-frequency air conditioner

Abstract

The invention discloses a fire prevention control method of a fixed-frequency air conditioner. The method includes: during air conditioner operation, acquiring the temperature in an air conditioner power plug in real time to serve as the current power supply temperature, and acquiring the indoor temperature of a room where the air conditioner is located to serve as the current indoor environment temperature; acquiring the temperature difference between the current power supply temperature and the current indoor environment temperature to serve as the current temperature difference, and comparing the current temperature difference with set thresholds; if the current temperature difference is not smaller than the first set threshold, controlling the air conditioner to shut down; if the current temperature difference is smaller than the first set threshold and not smaller than the second set threshold, regulating the rotation speed of an air conditioner fan to allow the current temperature difference to be smaller than the first set threshold. By the fire prevention control method, air conditioner temperature regulating comfortableness can be guaranteed while fire prevention control accuracy and reliability are increased.

Description

technical field [0001] The invention belongs to the technical field of air conditioner control, and in particular relates to a fire prevention control method for a fixed frequency air conditioner. Background technique [0002] As a device with a large working current in household appliances, the air conditioner often has a circuit structure temperature that is too high due to reasons such as excessive current or leakage to generate heat during its operation. Cause damage to the product, and there is also a greater potential safety hazard. [0003] In order to reduce the occurrence of air conditioner fire accidents, temperature protection is installed in the air conditioner in the prior art, and the realization scheme is to install a temperature sensor in the air conditioner electric control box, and use the temperature sensor to detect the temperature of the electric control box. When the temperature of the electric control box is too high, the working power of the air cond...

AI Technical Summary

Problems solved by technology

However, in practical applications, the temperature change in the air conditioner control box will lag behind the change in the grid current that supplies power to the air conditioner, and the control box is located inside the air conditioner, and its temperature is easily affected by the temperature of the internal heat exchanger when the air conditioner is running, resulting in incorrect detection. precise

On the other hand, when the temperature of the electric control box is too high, the air conditioner is controlled to stop directly. The control method is single, and factors such as the short-term increase in the temperature of the electric control box caused by external interference are not considered. Controlling the air conditioner to stop directly will lead to indoor temperature adjustment. reduced comfort

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