Cooling device and construction machine

Patent metadata

Field	Value
Publication number	US-9863122-B2
Application number	US-201615108682-A
Country	US
Kind code	B2
Filing date	Mar 31, 2016
Priority date	Mar 31, 2016
Publication date	Jan 9, 2018
Grant date	Jan 9, 2018

Abstract

A cooling device includes: an introduction pipe configured to introduce a charge air supercharged by a supercharger; a first aftercooler connected to the introduction pipe and configured to cool the charge air; a branch pipe branched from the introduction pipe; a second aftercooler connected to the branch pipe and configured to cool the charge air; and a cooling fan configured to supply a cooling wind to the first aftercooler and the second aftercooler, in which the first aftercooler and the second aftercooler are disposed to be shifted from each other in a rotation axis direction of the cooling fan.

First claim

The invention claimed is:

1. A cooling device comprising:
an introduction pipe configured to introduce a charge air supercharged by a supercharger;
a first aftercooler connected to the introduction pipe and configured to cool the charge air;
a branch pipe branched from the introduction pipe;
a second aftercooler connected to the branch pipe and configured to cool the charge air; and
a cooling fan configured to supply a cooling wind to the first aftercooler and the second aftercooler, wherein
the first aftercooler and the second aftercooler are disposed to be shifted from each other in a rotation axis direction of the cooling fan and in a direction perpendicular to the rotation axis direction and are disposed not to be overlapped with each other in the rotation axis direction of the cooling fan.

2. The cooling device according to claim 1 , wherein
the first aftercooler and the branch pipe are juxtaposed in the rotation axis direction of the cooling fan.

3. The cooling device according to claim 1 , wherein
the introduction pipe and the branch pipe are disposed at substantially the same height.

4. The cooling device according to claim 1 , wherein
the branch pipe comprises a straight pipe extending in a direction of introducing the charge air to the second aftercooler to be connected to the second aftercooler.

5. The cooling device according to claim 1 , further comprising:
a discharge pipe connected to the first aftercooler and configured to discharge the charge air from the first aftercooler; and
a joint pipe connecting the second aftercooler to the discharge pipe.

6. The cooling device according to claim 5 , wherein
the discharge pipe and the second aftercooler are juxtaposed in the rotation axis direction of the cooling fan.

7. The cooling device according to claim 5 , wherein
the discharge pipe and the joint pipe are disposed at substantially the same height.

8. The cooling device according to claim 5 , wherein
the discharge pipe comprises a straight pipe extending in a direction of discharging the charge air from the first aftercooler.

9. The cooling device according to claim 1 , wherein
the first aftercooler and the second aftercooler respectively have ends of cores at the same line with reference to the rotation axis direction.

10. A cooling device comprising: a main pipe comprising an introduction pipe configured to introduce a charge air supercharged by a supercharger, a first aftercooler connected to the introduction pipe, and a discharge pipe configured to discharge the charge air from the first aftercooler;
a branch pipe comprising a branch pipe branched from the introduction pipe, a second aftercooler connected to the branch pipe, and a joint pipe connecting the second aftercooler to the discharge pipe; and
a cooling fan configured to supply a cooling wind to the first aftercooler and the second aftercooler, wherein
the first aftercooler and the second aftercooler are disposed to be shifted from each other in a rotation axis direction of the cooling fan and in a direction perpendicular to the rotation axis direction and are disposed not to be overlapped with each other in the rotation axis direction of the cooling fan.

11. The cooling device according to claim 10 , wherein
the main pipe further comprises: a first T-pipe branched from the introduction pipe;
a first elbow pipe configured to change a flow direction of the charge air from an introduction direction of the charge air by the introduction pipe to an introduction direction of the charge air by the first aftercooler;
a second elbow pipe configured to change the flow direction of the charge air discharged from the first aftercooler from a discharge direction of the charge air by the first aftercooler to an opposite direction from the introduction direction by the introduction pipe; and
a second T-pipe branched from the discharge pipe, wherein
the branch pipe connects the first T-pipe to the second T-pipe.

12. A construction machine comprising:
an engine; and
the cooling device according to claim 1 .

13. A construction machine comprising:
an engine; and
the cooling device according to claim 10 .

Assignees

• Komatsu Mfg Co Ltd

Inventors

• Soejima Koji
• Tanaka Yushi
• Ishikawa Yuuki

Classifications

• B60K11/04

  Arrangement or mounting of radiators, radiator shutters, or radiator blinds · CPC title

• F01P2001/005

  Cooling engine rooms · CPC title

• F01P11/10

  Guiding or ducting cooling-air, to, or from, liquid-to-air heat exchangers · CPC title

• E02F9/0866 Primary

  Engine compartment, e.g. heat exchangers, exhaust filters, cooling devices, silencers, mufflers, position of hydraulic pumps in the engine compartment · CPC title

• F02B29/0431

  Details or means to guide the ambient air to the heat exchanger, e.g. having a fan, flaps, a bypass or a special location in the engine compartment · CPC title