The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2025
Filed:
Jul. 15, 2022
Sermeta, Morlaix, FR;
Joseph Le Mer, Plouezoch, FR;
Sermeta, , FR;
Abstract
The present invention relates to a heat exchanger ('), comprising: —a gas-tight casing (), —at least one tube () made from a good thermally conducting material and inside which a fluid to be heated can circulate, this tube () being helically wound so as to form a helical winding () having a longitudinal axis (X-X′) which is arranged inside said casing (), —means for conveying and/or for producing hot gases inside said casing (), such as a burner (), so as to define a combustion chamber () therein, this helical winding () being arranged so as to form a gap () between two adjacent turns, said at least one tube () having a front face () and a rear face () which are opposing, a bottom side () oriented towards the longitudinal axis (X-X′) and a top side () oriented towards the casing (), said front face () and said rear face () of the tube () being planar or substantially planar and being located on either side of the gap (). This heat exchanger is noteworthy in that said at least one tube () has, on the front face () thereof and/or the rear face () thereof, a shoulder () which extends from the bottom side () of the tube towards the top side () thereof, over part of the height (H) of the straight section of this tube () and also over the whole, or virtually the whole, length of this tube ().