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EGR cooler and main board thereof

A technology of EGR cooler and main board, applied in the direction of machine/engine, engine components, exhaust gas recirculation, etc., can solve the problems of deformation and failure of cooling pipe, affecting the circulation of medium, increasing manufacturing cost, etc., to prolong the service life and increase the contact area. , the effect of increasing manufacturing costs

Pending Publication Date: 2019-03-08
ZHEJIANG YINLUN MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this technical solution solves the problem of deformation and failure of the welding part of the cooling pipe, it will increase the manufacturing cost to a certain extent due to the addition of sub-main board parts
Because the flange occupies a certain space, especially when the perforation is multi-row and multi-column, the water channel between adjacent perforations will become very narrow, which will affect the circulation of the medium

Method used

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  • EGR cooler and main board thereof
  • EGR cooler and main board thereof
  • EGR cooler and main board thereof

Examples

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with accompanying drawing.

[0037] Figure 1~Figure 4 It is the structure of the existing EGR cooler, which has been described above and will not be repeated here.

[0038] refer to Figure 5 , the EGR cooler of the present invention includes two ends of the air chamber 1, two ends of the main board 2 and the middle water shell 4 (only the structure of one end is shown in the figure, and the other end of the air chamber, the main board and the water shell structure are also basically same, and connected in the same way), the water housing 4 is provided with inlet and outlet pipes 3 , and one or more groups of cooling pipes 5 are provided in the water housing 4 . In this embodiment, the cooling pipes 5 are divided into two groups, with five in each group.

[0039] refer to Figure 6~Figure 9 , the main board 2 includes a board body 205, and two sets of perforations 203 matching the cooling pipe 5 a...

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Abstract

The present invention discloses a main board of an EGR (exhaust gas recirculation) cooler; a set or multiple sets of through holes matched with a cooling pipe are formed in the main board, wherein a turnup is arranged around the main board; and flanges perpendicular to a main board plane are arranged around the through holes and are less than the main board in thickness. Contact area between the main board and the cooling pipe is able to be increased by the flanges to increase braze welding area, so that the main board and the cooling pipe are firmly welded, a deformation failure caused due toexcessive concentration of local stress is avoided, and the EGR cooler is prolonged in service life. The flanges are directly arranged on the through holes of the main board instead of increasing parts, thus the manufacturing cost is not increased on the premise of solving welding fastness. The flanges are less than the main board in thickness, so that a water channel between adjacent flanges isable to be widened, thereby facilitating medium circulation.

Description

technical field [0001] The invention relates to the technical field of heat exchangers, in particular to the field of engine exhaust gas recirculation coolers, in particular to an EGR cooler and a main board thereof. Background technique [0002] Exhaust gas recirculation technology is an important technical route to assist diesel engines to upgrade emissions and assist gasoline engines to reduce fuel consumption. Exhaust gas recirculation needs to be cooled to a certain temperature by the exhaust gas recirculation cooler (referred to as EGR cooler) before entering the engine cylinder. refer to figure 1 and figure 2 , the existing EGR cooler includes air chambers 1 at both ends, a main board 2 at both ends and a water shell 4 in the middle; the water shell 4 is provided with an inlet and outlet pipe 3, and one to more A group of cooling pipes 5 ; one or more groups of perforations 203 are provided on the main board 2 , and the perforations 203 are in one-to-one correspon...

Claims

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Application Information

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IPC IPC(8): F02M26/29F02M26/32
CPCF02M26/29F02M26/32
Inventor 王丹娟张文锋高建新凌天峰
Owner ZHEJIANG YINLUN MACHINERY
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