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Title:
HYBRID TYPE CONSTRUCTION MACHINE
Document Type and Number:
Japanese Patent JP2013245457
Kind Code:
A
Abstract:

To provide a construction machine having an equipment temperature adjusting device capable of efficiently controlling the temperature of electric equipment such as an electric motor and an electrical storage device.

A construction machine includes a prime mover, an electric motor assisting the prime mover with power, an electric storage device, a hydraulic pump driven by the prime mover, a plurality of driven bodies driven with pressure oil from the hydraulic pump, an operation device which commands operations of the plurality of driven bodies, and an operation chamber provided with the operation device and an air conditioner, and includes an equipment temperature adjusting device including a refrigeration cycle circuit which air-conditions the interior of the operation chamber, an equipment cooling circuit which adjusts the temperature of a heating body generating heat through the operation of the operation device, an intermediate heat exchanger exchanging heat between the refrigeration cycle circuit and the equipment cooling circuit, operation state detection means of detecting the operation state of the operation device, and control means of determining whether or not the temperature of the heating body is adjusted by the refrigeration cycle circuit through the intermediate heat exchanger according to the operation of a construction machine detected by the operation state detection means.


Inventors:
OZAKA TADASHI
WATANABE YUTAKA
FUJISHIMA KAZUO
TAKESHITA SEIICHIRO
Application Number:
JP2012119043A
Publication Date:
December 09, 2013
Filing Date:
May 24, 2012
Export Citation:
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Assignee:
HITACHI CONSTRUCTION MACHINERY
International Classes:
E02F9/20; B60H1/22; B60H1/32; B60L3/00; E02F9/00; E02F9/16
Attorney, Agent or Firm:
Kasuga Toshiaki
Inoki Yuichi