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Header-plateless heat exchanger

A heat exchanger and tube plate technology, applied to heat exchange equipment, heat exchanger shells, indirect heat exchangers, etc., can solve problems such as durability impact

Pending Publication Date: 2020-10-30
T RAD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In this heat exchanger, it is known that thermal stress is generated in each flat tube forming the core by the high-temperature gas in the vicinity of the inflow port of the high-temperature gas, thereby greatly affecting the durability thereof.

Method used

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  • Header-plateless heat exchanger
  • Header-plateless heat exchanger
  • Header-plateless heat exchanger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0059] Next, embodiments of the present invention will be described based on the drawings.

[0060] figure 1 as well as figure 2 is a diagram of the main part of the first embodiment of the present invention, and is the inlet 20 of the first fluid 17, that is, the high-temperature gas (refer to Figure 9 ) side of the figure. The structure of the heat exchanger is capable of applying Figure 7 , Figure 8 , Figure 9 Structure. in addition, image 3 is an exploded perspective view of the flat tube 2 thereof.

[0061]The core 3 of this heat exchanger is formed by laminating a plurality of flat tubes 2 in the thickness direction at both ends of the opening, and each flat tube 2 has a bulge 1 at both ends of the opening. In this example, each of the flat tubes 2 is formed to have a square cross section by a pair of opposing short side portions 2 a and a pair of long side portions 2 b perpendicular to the pair of short side portions 2 a.

[0062] like figure 2 , Fig...

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PUM

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Abstract

In order to prevent cracking due to a thermal cycle on a gas inflow side in a charge air cooler through which high-temperature gas passes, an angular first high-edge section (2c) is formed in a protruding manner at both end portions of a long-side section (2b) of a flat tube (2) having a square cross section and forming a core (3), and is connected to a first low-edge section (2d) by means of a first curved section (2g) and second curved section (2h) smoothly curving from the first high-edge section (2c).

Description

technical field [0001] The present invention relates to a headerless heat exchanger in which a core is formed by laminating flat tubes having a bulging portion in which an opening end bulges in the thickness direction on the bulging portion in the thickness direction, and is covered with a shell. Fit the outer periphery of the core. Background technique [0002] Patent Document 1 below proposes a headerless heat exchanger in which a core is formed by laminating flat tubes having bulging portions at both ends of the open end in the thickness direction, and an outer shell is fitted to the core. the periphery. In this heat exchanger, the end portions of the flat tubes are bulged in the thickness direction, thereby providing a heat exchanger with a simple structure that does not require a conventional header plate. [0003] High-temperature gas is introduced from one tank disposed at both ends of the core to the other tank, and heat is exchanged between the high-temperature ga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F9/26F28D7/16F28F1/02F28F9/00F28F3/08
CPCF28D7/1661F28D2021/0082F28F3/12F28D9/0031F28F3/044F28F3/027F28F9/0221
Inventor 小室朗大友聪
Owner T RAD CO LTD