METHOD AND DEVICE FOR CONTROLLING REFRIGERANT DISTRIBUTION OF MULTI-SPLIT AIR-CONDITIONING SYSTEM
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United States of America Patent
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Issued Date -
Jul 13, 2017
app pub date -
Apr 26, 2016
filing date -
Jul 6, 2015
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Abstract
A method and a device for controlling refrigerant distribution of a multi-split air-conditioning system are disclosed in the present disclosure. The method includes: when the system enters a main heating mode, controlling the second electronic expansion valve to close; controlling an electronic expansion valve corresponding to a cooling indoor unit to perform an opening adjustment; when an opening of the electronic expansion valve corresponding to the cooling indoor unit reaches a maximum opening, calculating a target opening of the second electronic expansion valve according to a total opening and the maximum opening of the electronic expansion valve corresponding to the cooling indoor unit; and controlling the second electronic expansion valve according to the target opening. With the method, the cooling effect of the cooling indoor unit is ensured and the liquid strike on the compressor may be avoided under the main heating mode.
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