Direct digital control (DDC) controller for control over strong-to-weak electricity conversion of central air conditioner

Abstract

The invention discloses a direct digital control (DDC) controller for control over strong-to-weak electricity conversion of a central air conditioner. The DDC controller comprises a left shell, a DDCcontroller body, a main shell and a right shell, the left shell is bonded to one side of the main shell, the right shell is bonded to the other side of the main shell, the DDC controller body is mounted inside the main shell, sliding grooves are formed in the end walls of the upper side and the lower side of the front side end face of the main shell correspondingly, wiring openings are formed in the end faces of the upper side and the lower side of the DDC controller correspondingly, wiring tubes are mounted in the left shell and the right shell, at the ends of the wiring openings, of the DDCcontroller body correspondingly, and the wiring tubes are composed of tube cavities and tube walls. According to the DDC controller, real-time electric energy quality information and an electric energy quality model in a historical database are checked and compared so that the comprehensiveness and safety of quality monitoring of strong-weak electricity conversion of the central air conditioner can be further improved.

Description

technical field [0001] The invention relates to the application technical field of a DDC controller, in particular to a DDC controller for central air conditioner strong current conversion and weak current control. Background technique [0002] DDC Direct Digital Control, commonly known as a DDC controller. The composition of DDC system usually includes central control equipment, such as centralized control computer, color monitor, keyboard, printer, uninterruptible power supply, communication interface, etc., on-site DDC controller, communication network, and corresponding sensors, actuators, regulating valves, etc. components, but the existing DDC controllers are directly connected to the controlled external electrical appliances through their own wiring ports, and the wiring ports of the DDC controller and the external electrical appliances are all integrated connections, so that when the DDC controller is connected and used It is directly exposed to the air. Dust accumu...

AI Technical Summary

Problems solved by technology

The composition of DDC system usually includes central control equipment, such as centralized control computer, color monitor, keyboard, printer, uninterruptible power supply, communication interface, etc., on-site DDC controller, communication network, and corresponding sensors, actuators, regulating valves, etc. components, but the existing DDC controllers are directly connected to the controlled external electrical appliances through their own wiring ports, and the wiring ports of the DDC controller and the external electrical appliances are all integrated connections, so that when the DDC controller is connected and used It is directly exposed to the air. Dust accumulation, circuit aging, and damage to the wiring port are prone to occur when the line is energized for a long time, which reduces the life of the DDC controller and increases the maintenance cost. In order to solve the above problems, a central air-conditioning strong current Conversion of DDC controllers for weak current control for human use

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