公开(公告)号：US20180031274A1

公开(公告)日：2018-02-01

申请号：US15645875

申请日：2017-07-10

Applicant: Johnson Controls Technology Company

Inventor： Stephen C. Wilson ,  David C. Rimmer ,  Raul G. Guajardo

IPC: F24H3/08 ,  F28F13/06 ,  F28F1/12

CPC classification number: F24H3/087 ,  F28D1/0477 ,  F28D2021/0024 ,  F28F1/12 ,  F28F1/126 ,  F28F1/24 ,  F28F13/06 ,  F28F2265/10

Abstract: A furnace system includes a burner assembly that includes a burner configured to produce a flame and a heat exchanger that includes a plurality of tube passes. The plurality of tube passes cooperatively forms a conduit for flowing combustion products generated by the burner assembly. Each tube pass of the plurality of tube passes overlaps with other tube passes of the plurality of tube passes. A first tube pass of the plurality of tube passes is configured to receive the flame, and the first tube pass includes a first plurality of surface enhancements extending radially outward from an outer surface of the first tube pass relative to a central axis of the first tube pass. The furnace system also includes a baffle that is coupled to the burner assembly, extends toward the first tube pass, and is configured to contact the flame and the first tube pass.

公开(公告)号：US11022340B2

公开(公告)日：2021-06-01

申请号：US15645875

申请日：2017-07-10

Applicant: Johnson Controls Technology Company

Inventor： Stephen C. Wilson ,  David C. Rimmer ,  Raul G. Guajardo

IPC: F24H3/08 ,  F28F1/12 ,  F28F13/06 ,  F28F1/24 ,  F28D1/047 ,  F28D21/00

Abstract: A furnace system includes a burner assembly that includes a burner configured to produce a flame and a heat exchanger that includes a plurality of tube passes. The plurality of tube passes cooperatively forms a conduit for flowing combustion products generated by the burner assembly. Each tube pass of the plurality of tube passes overlaps with other tube passes of the plurality of tube passes. A first tube pass of the plurality of tube passes is configured to receive the flame, and the first tube pass includes a first plurality of surface enhancements extending radially outward from an outer surface of the first tube pass relative to a central axis of the first tube pass. The furnace system also includes a baffle that is coupled to the burner assembly, extends toward the first tube pass, and is configured to contact the flame and the first tube pass.