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Heat exchanger

A technology for heat exchangers and exchangers, applied in heat exchange equipment, heat exchangers, indirect heat exchangers, etc., can solve problems such as failure to comply with dimensional and geometric tolerances, loss of mechanical energy of the first fluid, and difficulty in production

Active Publication Date: 2019-06-28
SAFRAN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] This configuration has, inter alia, the disadvantage of a significant loss of mechanical energy from the first fluid due in part to the presence of a recirculation zone of the flow at the level of each of the leading edges of the fins
[0010] Furthermore, manufactured by SLM, in the vertical direction (plates and fins perpendicular to the structural support), this configuration makes it impossible to observe the dimensional and geometrical tolerances required for manufacturing
In fact, the melting of an overhang whose normal is parallel to the direction of addition of the layer creates difficulties in production, especially due to the fact that during the melting of such an overhang only the unmelted powder layer serves as a support

Method used

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Examples

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Embodiment Construction

[0037] exist figure 1 with figure 2 In , a heat exchanger 1 between a first fluid (eg hot exhaust gas) and a second fluid (eg air) flowing in longitudinal direction X is shown.

[0038] More specifically, the exchanger 1 is staged, ie a first stage 2 and a second stage 3 for circulating a first fluid. A first path 4 for circulating the second fluid is arranged between the first stage 2 and the second stage 3 (interstage circulation path). A second path 5 for circulating the second fluid ( figure 2 not shown in ) is arranged on the free side of the second stage 3 .

[0039] The example shown is by no means limiting, the exchanger 1 may have N stages, each stage defines a channel for circulating a first fluid, and two adjacent stages are used for circulating a second fluid, as required path separated.

[0040] It has to be noted that the flow of the first fluid along the longitudinal direction X can be from upstream to downstream (such as figure 1 shown) or from downstre...

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PUM

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Abstract

The present invention provides an exchanger (1) of heat between a first fluid flowing in a longitudinal direction (X) and a second fluid, the exchanger (1) comprises: two parallel plates (6) distant from one another; at least a first and second row (8a, 8b) of fins (9) arranged perpendicularly between the said plates (6), each fin (9) being delimited longitudinally by a first edge (10) and a second edge (11), the first edge (10) comprises at each of its ends a region of connection with the corresponding plate (6); characterized in that the said connection regions of the said first edge (10) are respectively inclined with respect to a normal to the plates (6) in a plane (P) perpendicular to the said plates (6) and parallel to the direction (X), the first edge (10) and the second edge (11) of each of the fins (9) have identical profiles in the plane (P).

Description

technical field [0001] The present invention relates to heat exchangers, in particular to heat exchangers for turbine engines. Background technique [0002] A turbine engine comprises a gas generator comprising, eg from upstream to downstream in the gas flow direction, one or more compressor stages, a combustion chamber, one or more turbine stages and nozzles for injecting exhaust gases. [0003] Heat exchangers are installed in turbine engines so that thermal energy can be transferred from one fluid to another. [0004] Such a heat exchanger is used, for example, to transfer thermal energy from hot exhaust gases to gases intended to be introduced upstream from the combustion chamber, which is particularly beneficial for the fuel consumption of the turbine engine. This heat exchanger can also be used to cool the lubricant (for example oil) of the different devices used to guide the rotor of the gas generator. [0005] Such exchangers are obtained, for example, by additive ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F3/04F28F3/06F28D9/00B22F3/105B22F5/00F02C7/08F28F21/08F28D21/00B33Y30/00
CPCF28F3/048F28F3/06F28F21/08F28D9/0062F28D9/0081F28F2255/18F28D21/001B22F5/009B33Y80/00B22F12/44B22F12/49B22F10/73B22F10/28F28D9/00F28F3/02B23K26/342B23K2101/001F28D21/0003F28F1/00F28F1/06Y02P10/25
Inventor 以法莱姆·图比安那
Owner SAFRAN
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