Multiple air-conditioning unit pipe device

Abstract

The invention discloses a pipe line of a multiple air conditioner group, comprising an air pipe, a liquid pipe, an oil pipe and a balance pipe communicated with every outer low pressure side, the special communicated location is every outer air-liquid separator. The balance pipe is arranged in the magnetic valve located at the main device side of the multiple air conditioner groups. The magnetic valve is started when the multiple air conditioner groups is producing heat and is shut down in the heat producing oil modification process. The balance pipe is arranged with a single direction valve arranged at the child device side of the multiple air conditioner groups, the cooling liquid could only be flow out from the child device. The balance pipe is arranged with balance pipe cutoff valve arranged on the balance pipe at the main device side and every child device side of the multiple air conditioner groups. The problem that the device is hard to start or being damage caused by the accumulation of the cooling liquid when the multiple air conditioner groups are producing heat and the child device is shut down could be avoided.

Description

technical field [0001] The invention relates to air-conditioning technology, in particular to a pipeline device of a multi-connected air-conditioning unit. Background technique [0002] The multi-connected air conditioner unit is a single refrigeration cycle system composed of one or several outdoor units connected to several direct evaporative indoor units of different or the same type and capacity, which can directly provide one or several different areas with processed Air. The multi-connected air conditioner unit is a centralized, large-scale, and intelligent product of ordinary split air conditioners. Its main feature is the free combination of indoor and outdoor units and independent control. Its flexible, convenient, energy-saving and high-efficiency features have attracted more and more attention from the industry. . [0003] In the multi-connected air conditioner unit, each indoor unit is connected to the outdoor unit through complex pipelines to form a closed pip...

AI Technical Summary

Problems solved by technology

When more and more refrigerant enters the outdoor unit that is shut down, a large amount of refrigerant will enter the compressor in liquid form. Since the compressor can only compress gas, the above refrigerant in liquid form will cause difficulty in starting the compressor or damage

At the same time, since the refrigerant keeps accumulating in the shutdown sub-units, the refrigerant in the heating cycle will also decrease, making the heating effect of the working multi-connected air conditioner unit poor or the system running unstable

[0016] In addition, under the existing pipeline, when the heating is working, if the sub-units or part of the sub-units are not working, the system resources of these sub-units cannot be utilized.

Images