Heat exchange for medical use

• US 7,748,438 B2
• Filed: 09/25/2006
• Issued: 07/06/2010
• Est. Priority Date: 10/10/2005
• Status: Active Grant

• Current Assignee: EUROSETS Srl (Societa Finanziaria Volpe SRL)
• Original Assignee: EUROSETS Srl (Societa Finanziaria Volpe SRL)
• Inventors: Balanzoni, Roberto, Ghelli, Nicola, Maianti, Edgardo Costa
• Primary Examiner(s): Walberg; Teresa J
• Application Number:
  US11/526,048
• Publication Number:
  US 20070079955A1
• Time in Patent Office: 1,380 Days
• Field of Search: 165/158, 165/162, 165/177, 165/179, 165/DIG.417, 165/DIG.419, 165/DIG.536
• US Class Current: 165/158
• CPC Class Codes: A61M 2205/366 by liquid heat exchangers
• CPC Class Codes: A61M 5/44 having means for cooling or heating the devices or media
• CPC Class Codes: F28D 2021/005 for medical applications
• CPC Class Codes: F28D 7/1615 the conduits being inside a casing and extending at an angle to the longitudinal axis of the casing; the conduits crossing the conduit for the other heat exchange medium
• CPC Class Codes: F28F 1/08 Tubular elements crimped or corrugated in longitudinal section
• CPC Class Codes: F28F 2240/00 Spacing means

Abstract

A heat exchanger for medical use, comprising a tube bundle formed by a plurality of tubes having a straight axis for the conveyance of a primary fluid, which are embedded at their ends in disks located at the end faces of an outer jacket which is adapted to delimit, together with the disks, a portion of space for the containment of the tube bundle which is designed to be crossed by a secondary fluid, each tube having, at least at a portion of its length, a plurality of consecutive crimps adapted to determine a progressive variation of the shape of the passage section.

Claims

1. A heat exchanger for medical use, comprising a tube bundle formed by a plurality of tubes having a straight axis for the conveyance of a primary fluid through a passage section thereof, said tubes being embedded at their ends in disks located at the end faces of an outer jacket which is adapted to delimit, together with said disks, a portion of space for the containment of said tube bundle which is designed to be crossed by a secondary fluid, wherein each tube has, at least at a portion of its length, a plurality of consecutive crimps adapted to determine a progressive variation of the shape of the passage section, and wherein each portion of the tube length forming the passage section, and which is comprised between two consecutive ones of said crimps, is shared as a prismoid with two opposite faces in which vertices of the prismoid form opposite quadrilaterals that are joined to each other by trapezoids.

2. The heat exchanger according to claim 1, wherein each tube has a plurality of crimps with mutually offset directions.

3. The heat exchanger according to claim 1, wherein each tube has a first series of parallel crimps alternated with a second series of parallel crimps, said crimps of the two series having directions that are offset.

4. The heat exchanger according to claim 1, wherein each tube has a first series of parallel crimps alternated with a second series of parallel crimps, directions of the crimps of the two series being offset substantially by 90°

.

5. The heat exchanger according to claim 1, wherein at least one wire element is provided for mutual connection of the individual tubes of the bundle, arranged so as to come into contact with said tubes at coplanar crimps.

6. The heat exchanger according to claim 1, wherein the tubes of the bundle have parallel axes.

7. A heat exchanger for medical use, comprising:

a tube bundle formed by a plurality of tubes that have straight axes for the conveyance of a primary fluid through a passage section thereof;

an outer jacket;

disks located at end faces of said outer jacket, said outer jacket being adapted to delimit, together with said disks, a portion of space for the containment of said tube bundle which is designed to be crossed by a secondary fluid,

wherein each tube has, at least at a length portion thereof, a plurality of consecutive crimps adapted to determine a progressive variation of the shape of the passage section, each length portion of said tube forming said passage sections and which is comprised between two consecutive ones of said crimps being shaped as a prismoid with two opposite faces in which vertices of the prismoid form opposite quadrilaterals that are joined to each other by trapezoids; and

at least one wire element provided for mutual connection of individual tubes of the bundle, said wire element being arranged so as to come into contact with said tubes at coplanar crimps.