US2007261817A1PendingUtilityA1

Heat Exchanger

49
Assignee: KITAZAWA MASAAKIPriority: Nov 26, 2004Filed: Nov 22, 2005Published: Nov 15, 2007
Est. expiryNov 26, 2024(expired)· nominal 20-yr term from priority
Inventors:Masaaki KitazawaShigeharu Taira
F28D 1/047F28F 1/32F28F 1/26F24F 1/0067F28F 2225/06F28F 17/005
49
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Claims

Abstract

A fin ( 6 ) is provided with insertion holes ( 22 ) for receiving heat exchange tubes and a rib ( 15 ) extending generally parallel to an outer edge ( 25 ) of the fin ( 6 ). The rib ( 15 ) is placed closer to the outer edge ( 25 ) than all the insertion holes ( 22 ) are. The rib ( 15 ) is formed on the fin ( 6 ) such that when an inside diameter of the insertion holes ( 22 ) is set as D [mm], a distance between a center of the insertion hole ( 22 ) nearest to the rib ( 15 ) and the outer edge ( 25 ) is set as L [mm], a distance between a center of the rib ( 15 ) and the outer edge ( 25 ) is set as La [mm], a width of the rib ( 15 ) is set as LL [mm], a thickness of the fin ( 6 ) is set as t [mm], and a height of the rib ( 15 ) is set as h [mm], then 0.4<La<(L−D/2−0.5), and 0.15<LL<0.5, 0.05<t<0.15, 0.5t<h<2.5t.

Claims

exact text as granted — not AI-modified
1 . A heat exchanger, comprising: 
 a plurality of heat transfer tubes; and    at least one plate-shaped fin ( 6 ) having a rib ( 15 ) generally parallel to an outer edge ( 25 ) of the fin and having insertion holes ( 22 ) for receiving the heat transfer tubes,    wherein the rib ( 15 ) is placed closer to the outer edge ( 25 ) than all the insertion holes ( 22 ) are, and    wherein when an inside diameter of the insertion holes ( 22 ) is set as D [mm], a distance between a center of the insertion hole ( 22 ) nearest to the rib ( 15 ) and the outer edge ( 25 ) is set as L [mm], and a distance between a center of the rib ( 15 ) and the outer edge ( 25 ) is set as La [mm], then      0.4< La <( L−D/ 2−0.5).    
   
   
       2 . The heat exchanger according to  claim 1 , wherein when a width of the rib ( 15 ) is set as LL [mm], a thickness of the fin ( 6 ) is set as t [mm], and a height of the rib ( 15 ) is set as h [mm], then  
       0.15<LL<0.5,  0.05<t<0.15, and  0.5t<h<2.5t.  
   
   
       3 . The heat exchanger according to  claim 1 , wherein 
 the outer edge ( 25 ) of the fin ( 6 ) inclines relative to the vertical direction in a condition that the heat exchanger is placed in a refrigeration device in use.    
   
   
       4 . The heat exchanger according to  claim 3 , which is incorporated in an indoor unit of an air conditioner.  
   
   
       5 . The heat exchanger according to  claim 3 , wherein 
 the inside diameter D of the insertion hole ( 22 ) is 7.5 mm or less.    
   
   
       6 . The heat exchanger according to  claim 3 , wherein the fin has a raised portion.

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