Teaching instrument for alternating-current variable-frequency multi-unit air conditioner integrated control system

Abstract

The invention discloses a teaching instrument for an alternating-current variable-frequency multi-unit air conditioner integrated control system. The teaching instrument comprises an air conditioner host, an electrical control system and a teaching instrument board, wherein the electrical control system comprises an electrical control component, a sensor, an outdoor unit integrated circuit board, an indoor unit integrated circuit board and an executing mechanism which is driven by the outdoor unit integrated circuit board and the indoor unit integrated circuit board; the electrical control system also comprises a lightning protection module and a frequency conversion module; the teaching instrument board comprises a circuit principle board and an electrical control mechanism board; a schematic circuit diagram of the air conditioner host is printed on the circuit principle board; an electrical control system wiring diagram is printed and the electrical control component, the lightning protection module, the frequency conversion module, the outdoor unit integrated circuit board and the indoor integrated circuit board are arranged on the front surface of the electrical control mechanism board; and a wire is connected on the back face of the electrical control mechanism board according to the electrical control system wiring diagram, so that the outdoor unit integrated circuit board and the indoor integrated circuit board on the electrical control mechanism board are electrically connected with the executing mechanism. An experimental method provided by the invention has an intuitive principle and rich content, and is particularly suitable for experimental teaching of the alternating-current variable-frequency multi-unit air conditioner integrated control system for professional students of refrigeration, electricity, household appliances and the like.

Description

[0001] The invention relates to the field of teaching instruments, and more specifically relates to a teaching instrument for an integrated control system of an AC frequency conversion multi-connected air conditioner. Background technique [0002] AC frequency conversion multi-connected air conditioner uses frequency conversion adjustment technology, which has fast cooling and heating speed, small indoor temperature difference, good comfort, and energy saving, and the compressor will not start frequently, which also prolongs the service life and has low noise. , can realize automatic defrosting without shutting down, so it is widely used. However, the electrical control system of frequency conversion technology and the refrigeration pipeline control system with frequency conversion capacity adjustment are relatively complicated, and with the increase of service life, the performance of the whole machine will also decline, and its hidden faults will also increase greatly. At pr...

AI Technical Summary

Problems solved by technology

However, this technical solution is only suitable for some small-scale design experiments with relatively simple structures, while the control system of AC inverter multi-connected air conditioners integrates frequency conversion technology, refrigeration technology, and lightning protection technology, and its working principle and troubleshooting skills are relatively good. Complicated and difficult to master

Some small and simple teaching experiment tools as mentioned above cannot solve the teaching of large and complex systems. We need to display the circuit structure of the system in a very intuitive way, so that students and maintenance technicians can more easily grasp the operation of AC inverter multi-connected air conditioners. Working principle, improve maintenance skill level

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