US2012181007A1PendingUtilityA1

Flat tube for heat exchange

44
Assignee: LIU JIHONGPriority: Sep 30, 2009Filed: Sep 30, 2010Published: Jul 19, 2012
Est. expirySep 30, 2029(~3.2 yrs left)· nominal 20-yr term from priority
Inventors:Jihong LiuHyunyoung Kim
F28F 1/022
44
PatentIndex Score
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Claims

Abstract

A flat tube for heat exchange includes a body having plural through holes with circular cross-sections. The through holes are arranged in one row and configured to have refrigerant pass through. t 1/ R is a value in which a thickness t 1 of partition portions partitioning an adjacent pair of the through holes and R is a radius R of the through holes, and t 2/ R is a value in which an outer peripheral thickness t 2 that is a thickness from a flat surface of an outer periphery of the flat tube to the through holes. 0.28<(t 2/ R)/(t 1 /R)<0.42 for an internal pressure of 10.0 to 90.0 MPa in the through holes.

Claims

exact text as granted — not AI-modified
1 . A flat tube for heat exchange comprising:
 a body having plural through holes with circular cross-sections, the through holes being arranged in one row and configured to have refrigerant pass therethrough,   t 1 /R is a value in which a thickness t 1  of partition portions partitioning an adjacent pair of the through holes and R is a radius R of the through holes,   t 2 /R is a value in which an outer peripheral thickness t 2  that is a thickness from a flat surface of an outer periphery of the flat tube to the through holes, and   0.28<(t 2 /R)/(t 1 /R)<0.42 for an internal pressure of 10.0 to 90.0 MPa in the through holes.   
     
     
         2 . The flat tube for heat exchange according to  claim 1 , wherein
 0.30≦(t 2 /R)/(t 1 /R)≦0.41 for an internal pressure of 20.0 to 80.0 MPa in the through holes.   
     
     
         3 . The flat tube for heat exchange according to  claim 1 , wherein
 0.32 ≦(t 2 /R)/(t 1 /R)≦0.41 for an internal pressure of 30.0 to 80.0 MPa in the through holes.   
     
     
         4 . The flat tube for heat exchange according to  claim 1 , wherein
 the flat tube is constructed of an elasto-plastically deformable material.   
     
     
         5 . The flat tube for heat exchange according to  claim 2 , wherein 0.32≦(t 2 /R)/(t 1 /R)≦0.41. 
     
     
         6 . The flat tube for heat exchange according to  claim 5 , wherein the flat tube is constructed of an elasto-plastically deformable material. 
     
     
         7 . The flat tube for heat exchange according to  claim 2 , wherein the flat tube is constructed of an elasto-plastically deformable material. 
     
     
         8 . The flat tube for heat exchange according to  claim 3 , wherein the flat tube is constructed of an elasto-plastically deformable material.

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