公开(公告)号：WO2013048922A3

公开(公告)日：2013-05-23

申请号：PCT/US2012056812

申请日：2012-09-24

Applicant: TRANE INT INC

Inventor： MICHAEL TODD A

IPC: F28F1/32 ,  F28F1/10 ,  F28F9/013

CPC classification number: F28F9/02 ,  F28D1/05375 ,  F28F9/0209 ,  F28F2270/02

Abstract: A brazed aluminum microchannel heal exchanger comprising a stack of alternating tubes and serpentine fins includes an expansion relief feature that accommodates uneven thermal expansion in the heat exchanger. The expansion relief feature provides the heat exchanger with sufficient structural support, at least during assembly, so that components of the heat exchanger can be firmly clamped in compression during a controlled-atmosphere brazing process, in some examples, the expansion relief feature is a gap or sliding engagement between adjacent headers of the heat exchanger. In addition or alternatively, the expansion relief feature comprises one or more slits cut into the serpentine fins after the brazing process, wherein each slit extends generally parallel to the tubes.

Abstract translation: 包括交替管和蛇形散热片叠层的钎焊铝微通道热交换器包括适应热交换器中不均匀热膨胀的膨胀释放特征。 至少在组装期间，膨胀释放特征为热交换器提供足够的结构支撑，使得热交换器的部件可以在受控气氛钎焊过程期间牢固地夹紧在压缩过程中，在一些示例中，膨胀释放特征是缝隙 或热交换器的相邻集管之间的滑动接合。 附加地或可选地，扩展释放特征包括在钎焊过程之后切入蛇形翅片的一个或多个狭缝，其中每个狭缝大致平行于管延伸。