Communication device and method of controller of multi-couple unit air conditioning unit capable of achieving simultaneous cooling and heating

Abstract

The invention discloses a communication device and method of a controller of a multi-couple unit air conditioning unit capable of achieving simultaneous cooling and heating. The communication device comprises outdoor units, valve cage devices and indoor units. A communication selection switch is arranged inside each valve cage device. When a communication selection switch is switched off, an outdoor unit and an indoor unit are disconnected, the outdoor unit and a valve cage device are disconnected, and the valve cage device can only be communicated with the indoor unit which is connected with the valve cage device. When the communication selection switch is closed, communication data can be directly received and sent between the indoor unit and the outdoor unit. Inner units connected with each valve cage device can be judged through the communication selection switches. After the judgment is finished, the outdoor units can normally communicated with the indoor units without valve cages except that states of magnetic valves of the valve cage devices are controlled. The valve cages are installed on a communication bus, and installation positions are relatively free, thereby being beneficial for solving the noise problem. Besides, no special arrangement is needed on common indoor units, and complete compatibility between cooling-heating air conditioning indoor units and common indoor units is achieved.

Description

technical field [0001] The invention relates to a simultaneous cooling and heating multi-connection air-conditioning system, in particular to a communication device and method for realizing a simultaneous cooling and heating multi-connection air-conditioning unit controller. Background technique [0002] In the simultaneous heating and cooling multi-connected air-conditioning system, by connecting different valve box devices, it is possible to realize the cooling operation of some internal machines and the heating operation of some internal machines. The external unit can be composed of several external units, each external unit can be connected to multiple valve boxes, and each valve box can be connected to multiple indoor units. [0003] Such as figure 1 As shown, the outdoor unit is connected to three valve boxes, wherein No. 1 valve box 105 is connected to three indoor units (No. 1 to No. 3 indoor units), and No. 2 valve box 106 is connected to two No. 5 internal machi...

AI Technical Summary

Problems solved by technology

[0011] 1. The solenoid valve mechanism needs to be controlled by the indoor unit, so the installation location is limited, and it must be close to the indoor unit, which will cause users to complain about noise

[0012] 2. The group number of the indoor unit needs to be set to distinguish the ownership of each indoor unit, so that the corresponding indoor unit can control the solenoid valve. The setting is complicated, and it is difficult to find a fault

[0013] 3. The three-pipeline indoor unit cannot be used in common with ordinary air conditioner indoor units

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