Communication method and device for realizing simultaneous cooling and heating multi-line air conditioning unit controller

Abstract

The invention discloses a method and a device for realizing communication of a controller of a multi-split air conditioner unit for cooling and warming simultaneously. The controller comprises valve boxes, wherein electromagnetic valves are arranged in the valve boxes. The communication method comprises the following steps of: connecting the valve boxes in series to a communication wire between an outdoor unit and an indoor unit of an air conditioning unit; virtualizing into the indoor unit and the outdoor unit through the valve boxes respectively to realize communication between the indoor unit and the outdoor unit so as to obtain information of the indoor unit and the outdoor unit; and controlling the switching states of the electromagnetic valves inside the valve boxes by using the valve boxes according to the obtained information of the indoor unit and the outdoor unit. According to the method, the indoor unit and the outdoor unit of the air conditioning unit are virtualized respectively through the valve boxes, communication addresses are actual addresses of the indoor unit and the outdoor unit,, and unit number setting of the valve boxes is not required, so that convenience is brought to installing and after-sales maintaining; the valve boxes are used for acquiring information of the indoor unit and the outdoor unit automatically, and the electromagnetic valves are controlled as required, so that simultaneous cooling and warming functions of the air conditioning unit are realized without performing any protocol change of the indoor unit and the outdoor unit of the air conditioner, and the generality of the indoor unit and the outdoor unit is enhanced.

Description

technical field [0001] The invention relates to the technical field of simultaneous cooling and heating multi-connected air-conditioning systems, in particular to a communication method and device for realizing simultaneous cooling and heating multi-connected air-conditioning unit controllers. Background technique [0002] Multi-connection is commonly known as "one-to-many", which means that one outdoor unit is connected to two or more indoor units through piping. The outdoor unit is generally composed of an outdoor heat exchanger, a compressor and other refrigeration accessories. Generally, the air-cooled or water-cooled heat exchanger is adopted; the indoor unit is composed of a fan and a heat exchanger, and generally adopts the form of direct evaporative heat exchange. Compared with multiple household air conditioners, the sharing of the outdoor units of the multi-connected air conditioner system can effectively reduce the equipment cost, and can realize the centralized m...

AI Technical Summary

Problems solved by technology

This method has the following defects: 1. The electromagnetic valve mechanism needs to be controlled by the internal unit, so the installation position of the electromagnetic valve is limited and must be close to the indoor unit, so the work of the electromagnetic valve will cause noise problems; 2. The internal unit needs to be installed Set the group number, so that the external unit can accurately know the information of the internal unit connected to the specific valve box, so that the corresponding internal unit can control the solenoid valve. Setting the group number of the internal unit will bring troubles to installation and maintenance, and will cause problems. It is not easy to find after the failure; 3. It is necessary to change the internal unit control program of the three-pipeline model, so that the three-pipeline internal unit cannot be used in common with the ordinary air conditioner

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