PREHEATING MODULE, OVEN COMPRISING SUCH A PREHEATING MODULE, AND METHOD FOR DENSIFICATION AND CONSOLIDATION OF A PART BY MEANS OF SUCH A PREHEATING MODULE

The preheating module addresses the bulkiness issue by employing a compact design with orthogonal gas flow, enhancing thermal efficiency and enabling more compact oven integration for CMC material processing.

FR3149962B1Active Publication Date: 2025-05-02SAFRAN CERAMICS SA
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Patent Information

Application Number
FR2023006224
Authority / Receiving Office
FR · FR
Patent Type
Patents
Current Assignee / Owner
Filing Date
2023-06-16
Publication Date
2025-05-02
Estimated Expiration
2043-06-16

AI Technical Summary

Technical Problem

Existing preheating modules for ovens used in the densification and consolidation of composite materials with ceramic matrix (CMC) are bulky, occupying a significant volume due to the need for extensive heat transfer surfaces, which hinders their integration into compact manufacturing lines.

Method used

A preheating module with a reduced dimension along the main direction of gas flow, featuring a dispersion chamber and a diffusion chamber stacked along an axis, where the gas mixture flows orthogonally to the main direction, allowing for efficient heat exchange and homogenization with reduced volume.

Benefits of technology

The reduced dimension preheating module enables more compact oven designs, enhances thermal exchange efficiency, and accelerates the heating of gas mixtures, thereby improving the densification and consolidation processes of CMC materials.

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Abstract

The invention relates to a preheating module (10) comprising a dispersion chamber (11) including a gas mixture bursting unit (20) having an inlet (25) located at the lower edge (17) and a plurality of internal walls (22) forming a gas mixture flow path (21); and a diffusion chamber (12) located downstream of the dispersion chamber (11) disposed above the dispersion chamber and forming a stack with the dispersion chamber. The gas mixture flow path (21) extends primarily along longitudinal (Y) and transverse (Z) axes orthogonal to a stacking axis (X), and in that the dimension of the diffusion chamber (12) along the stacking axis (X) does not differ by more than 20% from the dimension of the dispersion chamber (11) along this stacking axis. Figure for the summary: Figure 2b
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