Air conditioner system and control method thereof

Abstract

The invention discloses an air conditioner system and a control method thereof. The air conditioner system comprises at least one heat exchanger and at least one control mechanism. Each control mechanism is connected with one of at least one heat exchanger and used for controlling the corresponding heat exchanger to be switched between a first work state and a second work state. When the heat exchangers are in the first work state, liquid discharging is conducted, and when the heat exchangers are in the second work state, liquid storage is conducted. The air conditioner system and the controlmethod thereof solve the technical problem that under the situation that excessive refrigerants exist in an air conditioner system in the prior art, running reliability is low.

Description

Technical field [0001] The present invention relates to the field of air conditioning control, and specifically to an air conditioning system and a control method thereof. Background technique [0002] The biggest feature of the multi-split air conditioning system is that a single outdoor unit can be connected to multiple indoor units, making it easy to install and saving installation space. However, for multi-split systems, when the unit is running at low load, or there are few internal units turned on, there is often some low load control due to the large difference in the volume ratio of the heat exchanger between the outdoor unit and the indoor unit, or there is a lot of circulating refrigerant in the system. Reliability and other issues. For example, in actual use, during transitional seasons or in some special application places, refrigeration operation is often at partial load. At this time, the condensation pressure is low, and most of the refrigerant is often accum...

AI Technical Summary

Problems solved by technology

The low condensing pressure will cause the pressure difference between the front and back of the valve to be too small, and the liquid supply power will be insufficient, which will reduce the adjustment ability of the throttling mechanism such as the electronic expansion valve, the cooling capacity will decrease, and it will easily cause the system to return liquid

Low condensing pressure will also lead to low exhaust superheat, and the ability of the refrigerant to carry lubricating oil will increase, which will affect the reliability of the compressor.

[0003] Aiming at the technical problem of low operating reliability in the case of too much refrigerant in the air conditioning system in the related art, no effective solution has been proposed so far

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