Fluorine lack detecting method and device for VRF (variable refrigerant flow) system

Abstract

The invention discloses a fluorine lack detecting method and device for a VRF (variable refrigerant flow) system, wherein the method comprises the following steps that whether the VRF system conforms to the preset fluorine lack detecting conditions or not is judged; if the VRF system conforms to the preset fluorine lack detecting conditions, a compressor of the VRF system is started, and in addition, the VRF system is controlled to enter a work mode; after the compressor operates for a preset time, the work temperature of the VRF system is collected through a temperature sensing bulb of the VRF system; the fluorine lack detecting result of the VRF system in the work mode is obtained according to the work temperature; the prompt information whether the VRF system is lack of fluorine or not is generated on the basis of the fluorine lack detecting result of the VRF system in the work mode. The fluorine lack detecting method and the fluorine lack detecting device have the advantages that the fluorine lack detection is realized through the temperature sensing bulb of the VRF system, so that the goals of simplifying the process design and reducing the cost are achieved.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to a method and device for detecting fluorine deficiency in multi-line air conditioners. Background technique [0002] At present, multi-connected air conditioners detect the fluorine deficiency of multi-connected air conditioners based on the outdoor temperature and the saturation temperature corresponding to high and low pressures. The temperature sensing package is one of the components of the thermal expansion valve of the multi-connected air conditioner. It is usually tied to the outlet pipe of the evaporator to sense the temperature of the outlet pipe, and convert the temperature information into pressure information and send it to the valve body to achieve regulation. The role of flow. [0003] In the prior art, the fluorine deficiency detection of multiple air conditioners must rely on high and low pressure sensors. Under the premise of achieving the detection purpose and ac...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the fluorine deficiency detection of multiple air conditioners must rely on high and low pressure sensors. Under the premise of achieving the detection purpose and achieving the same detection effect, the industrial design and manufacture of high and low pressure sensors not only make the industrial design and The manufacturing is complicated, and the production cost is increased, and the difficulty of secondary processing is exacerbated

[0004] For the above problems, no effective solution has been proposed

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