Heat exchanger

Patent metadata

Field	Value
Publication number	US-10488121-B2
Application number	US-201615763707-A
Country	US
Kind code	B2
Filing date	Sep 23, 2016
Priority date	Sep 30, 2015
Publication date	Nov 26, 2019
Grant date	Nov 26, 2019

Abstract

It is intended to suppress occurrence of a crack in a fixed portion of a tube with respect to a tank. A plurality of tubes ( 4 A to 4 D) are fixed to a sidewall ( 9 ) in a state in which they penetrate through the sidewall ( 9 ) via respective ones of a plurality of through-holes ( 9 b ) formed in the sidewall ( 9 ) in such a manner as to be arrayed in a line along a longitudinal direction. A heat exchanger ( 1 ) comprises a protective member ( 5 ) fixed to the sidewall ( 9 ) to protect a nearest tube ( 4 A) nearest to an end wall ( 10 ) among the plurality of tubes ( 4 A to 4 D), wherein the protective member ( 5 ) has a barrier portion ( 13 ) interposed between the end wall ( 10 ) and an outlet-side end portion ( 4 b ) of the nearest tube ( 4 A) disposed inside the sidewall ( 9 ).

First claim

The invention claimed is:

1. A heat exchanger for cooling a target fluid, comprising:
an inlet-side tank having an inlet port for leading the target fluid into the inlet-side tank therethrough;
an outlet-side tank having an outlet port for leading the target fluid out of the outlet-side tank therethrough; and
a plurality of tubes each extending from the inlet-side tank to the outlet-side tank, wherein:
at least one of the inlet-side tank and the outlet-side tank comprises:
a sidewall extending along a given axis and surrounding the axis, and an end wall closing an opening at an end of the sidewall in a longitudinal direction of the tank along the axis;
the plurality of tubes are fixed to the sidewall in a state in which they penetrate through the sidewall via respective ones of a plurality of through-holes formed in the sidewall in such a manner as to be arrayed in a line along the longitudinal direction,

the heat exchanger further comprises a protective member fixed to the sidewall to protect a nearest tube nearest to the end wall among the plurality of tubes, the protective member having a barrier portion interposed between the end wall and an end portion of the nearest tube disposed inside the sidewall,
the protective member has an extended portion extending from the barrier portion in a direction away from the end wall in the longitudinal direction;
a pair of fixing sections are provided on the extended portion, one of the pair of fixing sections being disposed at one side portion of the extended portion in a direction orthogonal to the longitudinal direction of the extended portion and the other of the pair of fixing sections being disposed at the other side portion of the extended portion, the pair of fixing sections extending along the longitudinal direction; and
a small gap is formed between the sidewall and the proximal end of the barrier portion, and a space is formed between the barrier portion and the end portion of the nearest tube disposed inside the sidewall, the space allowing the target fluid to intrude thereinto.

2. The heat exchanger as recited in claim 1 , wherein a surface of the barrier portion facing the end wall is inclined such that a distance to the end wall gradually increases toward a center of a space surrounded by the sidewall.

3. The heat exchanger as recited in claim 1 , wherein, when viewed along the axis, the barrier portion has a size capable of covering only part of a region inside the sidewall.

4. The heat exchanger as recited in claim 1 , wherein, when viewed along the axis, the barrier portion has a size capable of covering an entirety of the end portion of the nearest tube disposed inside the sidewall.

5. The heat exchanger as recited in claim 1 , wherein the end portion of the nearest tube disposed inside the sidewall has a base, and wherein the protective member has a covering section which covers at least a part of the base on the side of the end wall, from a side opposed to the sidewall.

6. The heat exchanger as recited in claim 5 , wherein the covering section supports the end portion of the nearest tube disposed inside the sidewall in such a manner as to restrain the end portion of the nearest tube from being inclined in a direction away from the end wall.

7. The heat exchanger as recited in claim 6 , wherein the covering portion is formed with a fitting hole which penetrates through the covering section in a direction orthogonal to the axis and in which the end portion of the nearest tube is fitted.

Assignees

• Kobelco Constr Mach Co Ltd

Inventors

• Matsunaga Hidenori
• Kita Tomotaka

Classifications

• F28F2225/04

  for conduits · CPC title

• F28F9/028 Primary

  by using inserts for modifying the pattern of flow inside the header box, e.g. by using flow restrictors or permeable bodies or blocks with channels · CPC title

• F28F9/0243

  Header boxes having a circular cross-section · CPC title

• F28D1/05383

  with multiple rows of conduits or with multi-channel conduits (F28D1/05391 takes precedence) · CPC title

• F28F2225/08

  for header boxes · CPC title