An electric control box for an ultra-low temperature freezer with the function of preventing wrong plugging of plug wires

Abstract

The invention discloses an ultralow-temperature refrigerator electric cabinet provided with a patch-cord misplug prevention function. A relay, a transformer, an alternating-current contact and a computer board are mounted in an electric cabinet body, and are connected through a plurality of internal connection wires; a plurality of external connection wires are arranged inside the electric cabinet body, and extend out from the electric cabinet body; and the external connection wires are connected with a quick plug and are distinguished by using wires with different colors. Rapid plugging for assembly line production is realized by matching the external connection wires with the rapid plugging, and the plugging quality is ensured. Meanwhile, the wires are distinguished by using the different colors, so that the production plugging, the future maintenance, and the wire examination in the maintenance are more convenient.

Description

technical field [0001] The invention relates to an electric control box, in particular to an electric control box for an ultra-low temperature freezer with the function of preventing wrong insertion of plug wires. Background technique [0002] As we all know, the electric control box of ultra-low temperature freezer contains one or more low-voltage switchgear and related control, measurement, signal, protection, adjustment and other equipment, and the manufacturer is responsible for completely assembling together with structural components to complete all A combination of internal electrical and mechanical connections. [0003] At present, there are many problems in the electric control box, for example: because the electric control box includes many low-voltage switchgears and other equipment, the wiring is messy, and there are many lines that need to be plugged in. If plugging in one by one, the production efficiency is very low. If it is placed on the assembly line for p...

AI Technical Summary

Problems solved by technology

[0003] At present, there are many problems in the electric control box, for example: because the electric control box includes many low-voltage switchgears and other equipment, the wiring is messy, and there are many lines that need to be plugged in. If plugging in one by one, the production efficiency is very low. If it is placed on the assembly line for production, it is difficult for workers to keep up with the plugging speed, and while increasing the plugging speed, it will cause certain plugging errors, and it is difficult to guarantee the production quality; at the same time, there are many lines inside the electric control box. Under normal circumstances, people only use brown to represent the live wire, blue to represent the neutral wire, and yellow-green to represent the ground wire. In this way, there will be multiple wire harnesses of the same color in the electric control box. During the production and installation process and future maintenance, When overhauling, it will cause great inconvenience

[0004] In order to solve these problems, people often adopt an engineering junction box during installation, such as a kind of engineering junction box disclosed in Chinese patent document CN101728794A, which is provided with a power limit terminal board, a neutral wire terminal board, and a ground wire terminal board through the box body. And electrical appliance control wire terminal board, separate the neutral wire, live wire, connecting wire, power wire and electrical appliance control wire in the wiring, so as to realize the limited distinction of wiring, and then determine through the identification plate on each terminal board The source and plug-in relationship of each line solves the problem of fast plug-in to a certain extent, but it is plugged in according to the identification plate, which requires a high level of proficiency for the installer, and it is difficult to achieve fast on the assembly line. At the same time, the internal wiring is still messy, and there will still be multiple wire harnesses of the same color. There are still many problems in production, installation, and future maintenance and overhaul.

Images