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AssigneeCarrier Corporation
InventorsJinxiang Wang, Shaowei Chai, Xi Feng, Ahmad Mahmoud, Matthew Clark
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The disclosure provides a control method and a control device for a compressor unit, in which oil levels of a first compressor and a second compressor can be adjusted without additionally arranging an oil return pipeline. A first aspect of this application provides a control method for a compressor unit, the compressor unit having a first compressor and a second compressor, and the first compressor and the second compressor being in communication with each other through a gas balance pipe and an oil balance pipe. The compressor unit has a conventional operation step and an oil level adjustment step that are alternately executed, and in the oil level adjustment step, the compressor unit changes a rotation speed of the first compressor and/or the second compressor to adjust oil levels of the first compressor and the second compressor.
A control method for a compressor unit, the compressor unit having a first compressor and a second compressor, and the first compressor and the second compressor being in communication with each other through a gas balance pipe and an oil balance pipe, wherein
A control device for a compressor unit, the compressor unit having a first compressor and a second compressor, and the first compressor and the second compressor being in communication with each other through a gas balance pipe and an oil balance pipe, wherein the control device includes a conventional operation unit and an oil level adjustment unit that alternately operate, and the oil level adjustment unit generates an instruction for changing a rotation speed of the first compressor and/or the second compressor and allowing the compressor unit to continuously operate for a predetermined period of time to adjust oil levels of the first compressor and the second compressor.
Dependencies are inferred from the claim text.