EP 4375428 A1 20240529 - WORK MACHINE
Title (en)
WORK MACHINE
Title (de)
ARBEITSMASCHINE
Title (fr)
MACHINE DE TRAVAIL
Publication
Application
Priority
EP 22315299 A 20221125
Abstract (en)
[Problem] Provide a work machine that can cool a refrigerant and an oil by placing an oil tank and a heat exchange unit in the minimum necessary space inside a machine body.[Solution] A hydraulic excavator as a work machine includes a hydraulic pump driven by an engine, an oil tank that stores an oil pumped by the hydraulic pump, a heat exchange unit that cools a refrigerant, which passes through the engine, and the oil, and a fan that sends air to the heat exchange unit. The oil tank has a hollow portion with open portions at both ends. One of the open portions of the hollow portion is exposed from a side wall of the machine body on which the oil tank is mounted. The fan is placed between the one of the open portions of the hollow portion and the heat exchange unit.
IPC 8 full level
E02F 3/96 (2006.01); E02F 9/08 (2006.01); E02F 9/20 (2006.01); E02F 9/22 (2006.01)
CPC (source: EP)
E02F 3/964 (2013.01); E02F 9/0866 (2013.01); E02F 9/0883 (2013.01); E02F 9/0891 (2013.01); E02F 9/2095 (2013.01); E02F 9/226 (2013.01)
Citation (applicant)
US 2013081387 A1 20130404 - ZEOLLA GUISEPPE [CH], et al
Citation (search report)
- [IA] EP 3686351 A1 20200729 - YANMAR CO LTD [JP]
- [A] EP 2426277 A1 20120307 - KOMATSU HANOMAG GMBH [DE]
- [A] US 2019226502 A1 20190725 - WEISER THOMAS [DE], et al
- [A] US 6134816 A 20001024 - MURAKAMI YOSHIAKI [JP], et al
- [A] JP 2007283801 A 20071101 - HITACHI CONSTRUCTION MACHINERY, et al
- [A] US 2013075171 A1 20130328 - NOGUCHI AKIRA [JP], et al
- [A] US 2022307222 A1 20220929 - HORII HIROSHI [JP]
- [A] WO 2010013537 A1 20100204 - HITACHI CONSTRUCTION MACHINERY [JP], et al
- [A] US 2007163758 A1 20070719 - WELSCH ANDREAS [DE]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DOCDB simple family (application)
EP 22315299 A 20221125