Title:
CONSTRUCTION MACHINE
Document Type and Number:
WIPO Patent Application WO/2020/031818
Kind Code:
A1
Abstract:
With regard to the present invention, two oil coolers (30, 32) are disposed facing each other in the front half in a heat exchanger chamber (26) defined in an upper swing body (5), one oil cooler (31) is disposed in the rear half, and a space (E) formed between the coolers is used as work and passage space. A cooling fan (35) distributes the outside air as cooling air to each oil cooler (30-32), cooling air flows that have passed through the two oil coolers (30, 32) disposed facing each other are made to collide with each other and discharged to the outside through a side wall outlet (38) of a front wall (26a) and a first upper outlet (39) of a ceiling (26e) of the heat exchanger chamber (26), and the cooling air flow that has passed through the other oil cooler (31) is made to collide with a left side wall (26c) and discharged to the outside through a second upper outlet (40) of the ceiling (26e).
Inventors:
SEO KOJI (JP)
ISHII NOBUHIRO (JP)
SATO KEI (JP)
ISHII NOBUHIRO (JP)
SATO KEI (JP)
Application Number:
PCT/JP2019/030127
Publication Date:
February 13, 2020
Filing Date:
August 01, 2019
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACH CO (JP)
International Classes:
E02F9/00; F01P3/18; F01P5/02; F01P5/06
Foreign References:
JPH11269920A | 1999-10-05 | |||
JPH0252926U | 1990-04-17 | |||
JP2009220811A | 2009-10-01 | |||
JP2004270570A | 2004-09-30 | |||
JP2009155906A | 2009-07-16 | |||
JP2015058813A | 2015-03-30 |
Other References:
See also references of EP 3835490A4
Attorney, Agent or Firm:
NAGATO Kanji (JP)
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