Compression apparatus
AssigneeKobe Steel, Ltd.
InventorKazuya Hirata
Life of this patent
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Abstract
Provided is a compression apparatus for cooling multiple devices using a single fan with a small amount of electric power. An upper limit temperature, a first gain applied in a case in which a suction adjustment valve is opened, and a second gain applied in a case in which the suction adjustment valve is closed are set in advance for each of multiple temperature detectors provided at different locations of the compression apparatus; and, for each of the multiple temperature detectors, a difference between a detected value and the upper limit temperature is calculated, and a rotation speed of the fan is determined based on the smallest value in the differences, and the first gain or the second gain set for the temperature detector having the smallest difference.
Claims6
A compression apparatus comprising:
- a compressor for compressing a fluid flowing through a flow path;
- and discharging compressed fluid through the same flow path
- a plurality of temperature detectors that are provided at different locations along the flow path;
- a cooling fan that is capable of changing a rotation speed thereof;
- and
- a fan controller that determines the rotation speed of the cooling fan based on detected values by the plurality of temperature detectors;
- wherein the fan controller:
- sets, in advance, an upper limit temperature and a control gain to each of the plurality of temperature detectors;
- calculates a difference between the detected value and the upper limit temperature for each of the plurality of temperature detectors;
- and
- determines the rotation speed of the fan based on the smallest value in the differences and the control gain set to the temperature detector having the smallest difference.
Dependencies are inferred from the claim text.