COOLING STRUCTURE FOR CONSTRUCTION MACHINE - HITACHI CONSTRUCTION MACHINERY CO., LTD.

Title:

COOLING STRUCTURE FOR CONSTRUCTION MACHINE

Document Type and Number:

WIPO Patent Application WO/2011/089934

Kind Code:

A1

Abstract:

Provided is a cooling structure for a construction machine such that heat generated by a battery can be efficiently discharged, and that the air discharged from an engine compartment is not sucked into a battery installation area. Said cooling structure for a construction machine is provided with an engine (4), a radiator (11) for cooling the engine (4), an engine compartment (5) wherein a hydraulic pump (7) is disposed, and a counterweight area (6) which is adjacent to the engine compartment (5) and wherein batteries (27) are installed. This cooling structure is characterized in that ventilation air flow paths (23) for cooling the engine compartment (5) and ventilation air flow paths (34) for cooling the batteries (27) are formed in approximately the same direction in such a way that the ventilation air flow paths (23) are separate from and independent of the ventilation air flow paths (34), and that the ventilation direction of cooling air which serves to cool the engine compartment (5) and goes through the air flow paths (23) is approximately parallel to the ventilation direction of cooling air which serves to cool the batteries (27) and goes through the air flow paths (34).

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Inventors:

ATARASHI Takayuki (HITACHI LTD., 832-2, Horiguchi, Hitachinaka-sh, Ibaraki 34, 〒3120034, JP)
新　隆之 (〒34 茨城県ひたちなか市堀口８３２番地２　株式会社日立製作所　機械研究所内 Ibaraki, 〒3120034, JP)
TERAKADO Shuichi (HITACHI LTD., 832-2, Horiguchi, Hitachinaka-sh, Ibaraki 34, 〒3120034, JP)
寺門　秀一 (〒34 茨城県ひたちなか市堀口８３２番地２　株式会社日立製作所　機械研究所内 Ibaraki, 〒3120034, JP)
FUNABASHI Shigehisa (HITACHI LTD., 832-2, Horiguchi, Hitachinaka-sh, Ibaraki 34, 〒3120034, JP)
舩橋　茂久 (〒34 茨城県ひたちなか市堀口８３２番地２　株式会社日立製作所　機械研究所内 Ibaraki, 〒3120034, JP)

Application Number:

JP2011/050162

Publication Date:

July 28, 2011

Filing Date:

January 07, 2011

Export Citation:

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Assignee:

HITACHI CONSTRUCTION MACHINERY CO., LTD. (5-1 Koraku 2-chome, Bunkyo-ku Tokyo, 63, 〒1128563, JP)
日立建機株式会社 (〒63 東京都文京区後楽二丁目５番１号 Tokyo, 〒1128563, JP)
ATARASHI Takayuki (HITACHI LTD., 832-2, Horiguchi, Hitachinaka-sh, Ibaraki 34, 〒3120034, JP)
新　隆之 (〒34 茨城県ひたちなか市堀口８３２番地２　株式会社日立製作所　機械研究所内 Ibaraki, 〒3120034, JP)
TERAKADO Shuichi (HITACHI LTD., 832-2, Horiguchi, Hitachinaka-sh, Ibaraki 34, 〒3120034, JP)
寺門　秀一 (〒34 茨城県ひたちなか市堀口８３２番地２　株式会社日立製作所　機械研究所内 Ibaraki, 〒3120034, JP)
FUNABASHI Shigehisa (HITACHI LTD., 832-2, Horiguchi, Hitachinaka-sh, Ibaraki 34, 〒3120034, JP)

International Classes:

E02F9/00; B60K1/04; B60K11/06; E02F9/18

Attorney, Agent or Firm:

The Patent Body Corporate TAKEWA INTERNATIONAL PATENT OFFICE (Kashiwaya Bldg, 6-13 Nishishinbashi 1-chome, Minato-k, Tokyo 03, 〒1050003, JP)

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