Drill rig and a method for controlling a fan therein
AssigneeAtlas Copco Rock Drills AB
InventorHenrik Jacobsson
Life of this patent
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Abstract
In a method for controlling at least one fan (13) for the regulation of the cooling demand of at least two cooling elements (12) included in a drill rig (1), the cooling demand of each one of the cooling elements (12) being determined, that the determined cooling demands are weighted together and that the fan (13) is controlled based on the weighting together. At least one cooling element is equipped with a safety thermostat, which, if required, prevents undercooling by the fact that the fluid in question is not allowed to circulate in this cooling element. Also described is a drill rig for the execution of the above-mentioned method.
Claims20
Method for controlling at least one fan (13) for the regulation of the cooling demand of at least two cooling elements (12) comprised in a drill rig (1), the cooling demand of each one of the cooling elements (12) being determined, that the determined cooling demands are weighted together and that the fan (13) is controlled based on said weighting together, characterized in that at least one cooling element is equipped with a safety thermostat, which, if required, prevents undercooling by the fact that the fluid in question is not allowed to circulate in this cooling element.
Drill rig comprising an engine (9), at least two cooling elements (12) and at least one fan (13), a control unit (15) being arranged to control the fan (13) based on a weighting together, executed in the control unit (15), of current cooling demands in the cooling elements (12), characterized in that at least one cooling element is equipped with a safety thermostat in order to, if required, prevent undercooling by not allowing circulation of the fluid in question in this cooling element.
Dependencies are inferred from the claim text.