Title:
WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2023/189576
Kind Code:
A1
Abstract:
The present invention prevents fan noise with a simple fan control. A turning work machine (1) comprises: a radiator fan (94a) (first cooling fan); an oil cooler fan (97a) (second cooling fan); a temperature detection unit (TD) that detects the temperature of a cooling target; a storage unit (121) that stores first data defining a correspondence relationship between a detected temperature from the temperature detection unit (TD) and a first target rotation speed, which is the target rotation speed of the radiator fan (94a), and second data defining a correspondence relationship between the detected temperature from the temperature detection unit (TD) and a second target rotation speed, which is the target rotation speed of the oil cooler fan (97a); and a control device (120) that controls the rotation speed of the radiator fan (94a) to the first target rotation speed corresponding to the detected temperature from the temperature detection unit (TD), and controls the rotation speed of the oil cooler fan (97a) to the second target rotation speed corresponding to the detected temperature from the temperature detection unit (TD). The second target rotation speed is set such that the difference with respect to the first target rotation speed is at least a prescribed difference, regardless of the detected temperature from the temperature detection unit (TD).
Inventors:
ITO JUNKI (JP)
Application Number:
PCT/JP2023/009988
Publication Date:
October 05, 2023
Filing Date:
March 15, 2023
Export Citation:
Assignee:
KUBOTA KK (JP)
International Classes:
E02F9/00
Foreign References:
| JP2002081408A | 2002-03-22 | |||
| US20080103635A1 | 2008-05-01 | |||
| JP2021156571A | 2021-10-07 |
Attorney, Agent or Firm:
YASUDA & OKAMOTO IP LAW FIRM (JP)
Download PDF:
Previous Patent: LENS UNIT
Next Patent: FLUID TRANSPORT DEVICE, LIQUID COOLING DEVICE, REFRIGERATION DEVICE, AND METHOD FOR DETECTING STATE ...
Next Patent: FLUID TRANSPORT DEVICE, LIQUID COOLING DEVICE, REFRIGERATION DEVICE, AND METHOD FOR DETECTING STATE ...