Electric actuator with temperature control and refrigeration structure

Abstract

The invention relates to an electric actuator with a temperature control and refrigeration structure. The electric actuator comprises an electric control box, a line limit control box and a refrigeration control box. The refrigeration control box is connected with the electric control box. The electric control box is connected with the line limit control box. The refrigeration control box is composed of a box body, a box cover and an end cover. A compressor, a condenser, a cooling fan, a drying filter, a bottom plate, a fan support, a connecting rod, a micro motor, a micro gear box, a liquid dividing cylinder and a three-way guide pipe are arranged in the box body of the refrigeration control box. Temperature sensors, evaporators and capillary tubes are arranged in a box body of the electric control box and a box body of the line limit control box. The temperature of the electric control box and the temperature of the line limit control box are monitored through the temperature sensors, a refrigeration circuit is formed by adding the design of the temperature control and refrigeration structure, and therefore the control over the temperature of key parts in the electric actuator can be achieved. Thus, the phenomenon that once the temperature of the electric control box and the temperature of the line limit control box are too high, the automatic control part is prone to damage, and then the whole automatic system can not be normally used is avoided.

Description

technical field [0001] The invention relates to an electric actuator, in particular to an electric actuator with a temperature-controlled cooling structure. Background technique [0002] Electric actuators are mainly used in various integrated automation systems, but with the development of society and various technologies, the use environment of electric actuators is becoming more and more harsh, and the requirements for them are becoming higher and higher. The requirements for electric actuators are mainly reflected in the requirements for their temperature, which is suitable for high temperature environments. The electric actuator is mainly divided into three parts: the motor, the electrical control, and the reducer, and all three parts have requirements for high-temperature environments at the same time. The overheating of the motor has a thermal protection function, and the mechanical part of the reducer needs high-temperature lubricating oil to reduce the wear of vario...

AI Technical Summary

Problems solved by technology

For example, if ordinary electric actuators are used in high-temperature areas near boilers, power plants, and chemical industries, the working environment temperature can only be -20°C to 70°C. If the working environment temperature is higher, high-temperature electric actuators are needed. The actuator can only be used in a high temperature environment for a short time. Once the high temperature is used for a long time, even if the lubricating oil of the mechanical part can adapt to the high temperature, the electrical main control board, the limit cam, and the potentiometer will inevitably be damaged, resulting in the overall electric motor. Executor is unavailable

[0003] Many domestic and foreign manufacturers have considered the high temperature problem when developing new electric actuators, and generally use methods such as heat insulation and high-temperature lubricating oil. If the control box part is heated, the automation control part will be easily damaged, resulting in the failure of the entire automation system to work normally. System maintenance or replacement will affect normal production, which will not only increase equipment maintenance costs, but also affect production efficiency.

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