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Title:
EXPANSION TANK
Document Type and Number:
WIPO Patent Application WO/2017/209145
Kind Code:
A1
Abstract:
An expansion tank 30 is a closed type one which is connected to an engine cooling device and which separates air from cooling water circulating in the cooling device, and is characterized by comprising: a tank body 35; a plurality of partition walls 42 having communication holes 44 at positions lower than a water level reference line 43 and partitioning the inside of the tank body 35 into a plurality of separation chambers 36a-36f; an inlet port 34 that is connected, at a position lower than the water level reference line 43, to the separation chamber 36a; an outlet port 33 that is connected, at a position lower than the water level reference line 43, to the separation chamber 36e other than the separation chamber 36a; a water inlet 31 provided in one of the separation chambers other than the separation chamber 36a; and a backflow prevention device 38 provided in the communication hole 44 of the partition wall 42 that defines the separation chamber 36a.

Inventors:
NISHIGUCHI Hitoshi (Hitachi Construction Machinery Co. Ltd., 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
MATSUMOTO Tetsuya (Hitachi Construction Machinery Co. Ltd., 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
FUJII Toshinori (Hitachi Construction Machinery Co. Ltd., 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
Application Number:
JP2017/020150
Publication Date:
December 07, 2017
Filing Date:
May 30, 2017
Export Citation:
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Assignee:
HITACHI CONSTRUCTION MACHINERY CO., LTD. (16-1, Higashiueno 2-chome Taito-k, Tokyo 15, 〒1100015, JP)
International Classes:
F01P11/00; B60K11/04; E02F9/00; F01P3/20; F01P5/06
Attorney, Agent or Firm:
KAICHI IP (3-16, Nihonbashi-muromachi 4-chome Chuo-k, Tokyo 22, 〒1030022, JP)
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