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HYDRAULIC DRIVE FAN CONTROL DEVICE
A hydraulic drive fan control device (21) is provided with a variable displacement hydraulic pump (2), a hydraulic motor (6) that is driven by pressurized oil from the hydraulic pump (2), a hydraulic drive fan (7) that is driven by the hydraulic motor (6), a flow amount control valve (8) that changes a flow amount of the pressurized oil to be delivered to the hydraulic motor (6), a rotational speed detector (14) that detects a rotational speed of an engine (4), and a controller (16) that outputs a control signal to the hydraulic pump (2) and the flow amount control valve (8) in accordance with the rotational speed of the engine (4). The controller (16) outputs a first valve control signal to the flow amount control valve (8) and outputs a first pump control signal to the hydraulic pump (2) to rotate the hydraulic drive fan (7) at a first rotational speed, and outputs a second valve control signal to the flow amount control valve (8) and outputs a second pump control signal to the hydraulic pump (2), thereby stopping the rotation of the hydraulic drive fan (7).
HYDRAULIC DRIVE FAN CONTROL DEVICE
A hydraulic drive fan control device (21) is provided with a variable displacement hydraulic pump (2), a hydraulic motor (6) that is driven by pressurized oil from the hydraulic pump (2), a hydraulic drive fan (7) that is driven by the hydraulic motor (6), a flow amount control valve (8) that changes a flow amount of the pressurized oil to be delivered to the hydraulic motor (6), a rotational speed detector (14) that detects a rotational speed of an engine (4), and a controller (16) that outputs a control signal to the hydraulic pump (2) and the flow amount control valve (8) in accordance with the rotational speed of the engine (4). The controller (16) outputs a first valve control signal to the flow amount control valve (8) and outputs a first pump control signal to the hydraulic pump (2) to rotate the hydraulic drive fan (7) at a first rotational speed, and outputs a second valve control signal to the flow amount control valve (8) and outputs a second pump control signal to the hydraulic pump (2), thereby stopping the rotation of the hydraulic drive fan (7).
HYDRAULIC DRIVE FAN CONTROL DEVICE
STEUERUNGSVORRICHTUNG FÜR EIN GEBLÄSE MIT HYDRAULIKANTRIEB
DISPOSITIF DE COMMANDE DE VENTILATEUR À ENTRAÎNEMENT HYDRAULIQUE
TANAKA TAKAAKI (author) / ARAI MASATSUGU (author) / SATO TAKAYUKI (author) / FUKUDA NAOKI (author) / IKEDA JUN (author) / KOUNO RYUJI (author)
2022-08-10
Patent
Electronic Resource
English
IPC:
F15B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL
,
Druckmittelbetriebene Systeme allgemein
/
E02F
Baggern
,
DREDGING
/
F01P
Kühlung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein
,
COOLING OF MACHINES OR ENGINES IN GENERAL
/
F04D
Strömungsarbeitsmaschinen
,
NON-POSITIVE-DISPLACEMENT PUMPS