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US 12,158,294 B2Granted
Air-conditioning apparatus
AssigneeMitsubishi Electric Corporation
InventorKazuya Michikami
Life of this patent
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Abstract
An air-conditioning apparatus includes a refrigerant circuit including a compressor, a strainer, and an expansion valve, and a controller configured to control the expansion valve in the refrigerant circuit. In the air-conditioning apparatus, in a case where the expansion valve is closed, the controller performs control to close the expansion valve after opening the expansion valve to cause an opening port diameter of the expansion valve to be greater than a mesh diameter of the strainer.
Claims3
An air-conditioning apparatus, comprising:
- a refrigerant circuit including a compressor, a strainer, and an expansion valve;
- and
- a controller configured to control the expansion valve in the refrigerant circuit, wherein
- when a set opening degree of the expansion valve is defined as Ap,
- the controller performs control to measure an amount of time for which the opening degree A of the expansion valve is less than the set opening degree Ap, after operation of the air-conditioning apparatus starts, and
- responsive to determining that the measured time is greater than a threshold, the controller performs control to cause an opening port diameter of the expansion valve to be greater than a mesh diameter of the strainer and subsequently to close the expansion valve.
3 more elements
Dependencies are inferred from the claim text.