Multi-split air conditioner system, and air valve device and outdoor unit of multi-split air conditioner system

Abstract

The invention provides a multi-split air conditioner system, and an air valve device and an outdoor unit of the multi-split air conditioner system. The air valve device comprises an air valve, an executer and a controller. The air valve can be arranged at the position of an air supply port of an outdoor draught fan of the multi-split air conditioner system and is used for adjusting the air supplyarea of the air supply port. The executer is connected with the air valve and used for controlling the air valve to be switched between the opening position and the closing position, and accordingly the air supply area of the air supply port can be adjusted. The controller is connected with the executer, is independent of a control system of the multi-split air conditioner system and is used for controlling the action of the executer. The air valve device can control the air volume of the outdoor draught fan, and the situation that under the low-temperature refrigeration work condition, due tothe too high air volume of the outdoor draught fan, the high pressure is relatively low, and consequently the system cannot normally run is avoided; and the actions of the air valve are controlled tobe conducted and not to be conducted through the executer, the actions of the executer are controlled through the controller, the controller is independent of the control system of the multi-split air conditioner system, accordingly, compatibility for existing systems is good, and system software upgrading is not needed.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a multi-connected air conditioning system, a damper device and an outdoor unit thereof. Background technique [0002] At present, with the expansion of the operating range of the multi-connected air conditioning system, there is also a cooling demand under low temperature conditions. For the sake of system and motor reliability, the minimum speed of the fan should not be too low. At this time, due to the low ambient temperature and large heat transfer temperature difference, it is easy to cause low high pressure caused by excessive air volume of the external unit, resulting in system failure. run. In the existing multi-connected air-conditioning system, the outdoor unit usually has no air valve, which cannot control the air volume of the outdoor fan; while the existing air-conditioning air valve is usually based on the control logic of the air-conditioning control syste...

AI Technical Summary

Problems solved by technology

For the sake of system and motor reliability, the minimum speed of the fan should not be too low. At this time, due to the low ambient temperature and large heat transfer temperature difference, it is easy to cause low high pressure caused by excessive air volume of the external unit, resulting in system failure. run

In the existing multi-connected air-conditioning system, the outdoor unit usually has no air valve, which cannot control the air volume of the outdoor fan; while the existing air-conditioning air valve is usually based on the control logic of the air-conditioning control system, the control is complicated, the reliability is poor, and it is difficult to meet the requirements. Requirements for low-temperature refrigeration in multi-connected air-conditioning systems

Images