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. 11, 2003
Filed:
Mar. 19, 2002
Olivier Fourt, Nevers, FR;
Philippe Maupetit, Arbourse, FR;
Alfa Laval AB, Tumba, SE;
Abstract
The invention relates to a spiral heat exchanger including at least two spiral sheets ( ) extending along a respective spiral-shaped path about a common center axis (x) and forming at least two spiral-shaped, substantially parallel flow channels ( ). Each flow channel ( ) permits a heat exchange fluid to flow in a substantially tangential direction with respect to the center axis (x). Each flow channel includes a radially outer orifice, which forms an outlet or an inlet of the respective flow channel and which is located at a radially outer part of the respective flow channel and a radially inner orifice, which enables communication between the respective flow channel and a respective inlet/outlet chamber ( ). The center axis (x) extends through the inlet/outlet chamber of the radially inner orifice. The spiral heat exchanger includes a center body ( ) extending around the center axis (x) and being closed with respect to the flow channels ( ).