Heat exchanger fin, heat exchanger, condensers, and evaporators

Abstract

A heat exchanger fin, capable of improving heat transfer rate while preventing generation of heat bypass flow, such as a louver fin provided with a plurality louvers arranged at certain intervals in the introduction direction of air. The louvers are formed by cutting and bending the heat exchanger fin so that the air is passed while being guided by the louvers. The plurality of louvers include louvers different in louver width, the louver width being defined by a length of the louver along which the heat medium passes. Wider louvers and narrower louvers can be arranged alternatively.

1 . A heat exchanger fin, comprising: 
 a heat transfer plate disposed in parallel to a heat medium introduction direction and provided with a plurality louvers arranged at certain intervals in the heat medium introduction direction, said plurality of louvers being formed by cutting and bending said heat transfer plate so that the heat medium is passed while being guided by said plurality of louvers,    wherein said plurality of louvers include plural kinds of louvers different in louver width, said louver width being defined by a length of said louver along which the heat medium passes, and    wherein said plural kinds of louvers different in louver width are disposed in a mixed arrangement along the heat medium introduction direction.    
   
   
       2 . The heat exchanger fin as recited in  claim 1 , wherein said plurality of louvers include wide louvers each having a wide louver width and narrow louvers each having a narrow louver width, wherein said wide louvers and said narrow louvers are disposed in a mixed arrangement.  
   
   
       3 . The heat exchanger fin as recited in  claim 2 , wherein one or a plurality of said wide louvers and one or a plurality of said narrow louvers are arranged alternatively.  
   
   
       4 . The heat exchanger fin as recited in  claim 2 , wherein said wide louver and said narrow louver are arranged alternatively.  
   
   
       5 . The heat exchanger fin as recited in  claim 2 , wherein when a louver width of said wide louver and a louver width of said narrow louver are represented as “Lwl” and “Lws,” respectively, a ratio “Lws/Lwl” of said louver width “Lws” of said narrow louver to said louver width “Lwl” of said wide louver is set to 0.1 to 0.7.  
   
   
       6 . The heat exchanger fin as recited in  claim 1 , wherein an angle of said louver with respect to said heat transfer plate is set to 22 to 36°.  
   
   
       7 . The heat exchanger fin as recited in  claim 1 , wherein a plurality of said heat transfer plates are arranged in parallel with each other at certain intervals in a direction perpendicular to the heat medium introduction direction to form an air passage between adjacent heat transfer plates.  
   
   
       8 . The heat exchanger fin as recited in  claim 7 , wherein a fin pitch defined by a distance between adjacent heat transfer plates is set to 1 to 2 mm.  
   
   
       9 . The heat exchanger fin as recited in  claim 7 , wherein when a fin pitch defined by a distance between adjacent heat transfer plates is represented as “Fp” and a louver width of a widest louver having a widest width is represented as “Lwmax,” a ratio “Fp/Lwmax” of said fin pitch “Fp” with respect to said louver width “Lwmax” is set to 1 or more.  
   
   
       10 . The heat exchanger fin as recited in  claim 1 , wherein said heat transfer plate is disposed between said pair of heat exchanging tubes arranged in parallel with each other at a certain distance to exchange heat between air as a heat medium passing through said pair of heat exchanging tubes and refrigerant passing through said heat exchanging tube.  
   
   
       11 . The heat exchanger fin as recited in  claim 10 , wherein it is configured such that refrigerant is condensed by exchanging heat with air.  
   
   
       12 . The heat exchanger fin as recited in  claim 10 , wherein it is configured such that refrigerant is evaporated by exchanging heat with air.  
   
   
       13 . A louver fin, comprising: 
 a heat transfer plate disposed in parallel to a heat medium introduction direction and provided with a plurality louvers arranged at certain intervals in the heat medium introduction direction, said plurality of louvers being formed by cutting and bending said heat transfer plate so that the heat medium is passed while being guided by said plurality of louvers,    wherein said plurality of louvers include plural kinds of louvers different in louver width, said louver width being defined by a length of said louver along which the heat medium passes, and    wherein said plural kinds of louvers different in louver width are disposed in a mixed arrangement along the heat medium introduction direction.    
   
   
       14 . A corrugated fin, comprising: 
 a plurality of heat transfer plates disposed in parallel to a heat medium introduction direction and arranged in parallel at certain intervals in a direction perpendicular to the heat medium introduction direction with adjacent heat transfer plates connected with each other, each of said plurality of heat transfer plates being provided with a plurality louvers arranged at certain intervals in the heat medium introduction direction, said plurality of louvers being formed by cutting and bending said heat transfer plate so that the heat medium is passed while being guided by said plurality of louvers,    wherein said plurality of louvers include plural kinds of louvers different in louver width, said louver width being defined by a length of said louver along which the heat medium passes, and    wherein said plural kinds of louvers different in louver width are disposed in a mixed arrangement.    
   
   
       15 . A heat exchanger, comprising a plurality of heat exchanger fins disposed in parallel to an air introduction direction and arranged in parallel at certain intervals in a direction perpendicular to the air introduction direction, and a refrigerant passage through which refrigerant passes, each of said plurality of heat transfer plates being provided with a plurality louvers arranged at certain intervals in the air introduction direction, said plurality of louvers being formed by cutting and bending said heat exchanger fin so that the air is passed while being guided by said plurality of louvers to exchange heat between the air and the refrigerant, 
 wherein said plurality of louvers include plural kinds of louvers different in louver width, said louver width being defined by a length of said louver along which the heat medium passes, and    wherein said plural kinds of louvers different in louver width are disposed in a mixed arrangement.    
   
   
       16 . A heat exchanger, comprising a pair of heat exchanging tubes disposed in parallel at a certain interval, and a plurality of heat exchanger fins each disposed in parallel to an air introduction direction and arranged in parallel with each other at certain intervals in a direction perpendicular to the air introduction direction, and each of said plurality of heat exchanger fins being provided with a plurality louvers arranged at certain intervals in the air introduction direction, said plurality of louvers being formed by cutting and bending said heat exchanger fin so that the air is passed while being guided by said plurality of louvers to exchange heat between the air and the refrigerant, 
 wherein said plurality of louvers include plural kinds of louvers different in louver width, said louver width being defined by a length of said louver along which the air passes, and    wherein said plural kinds of louvers different in louver width are disposed in a mixed arrangement.    
   
   
       17 . The heat exchanger as recited in  claim 15 , wherein said plurality of louvers include wide louvers each having a wide louver width and narrow louvers each having a narrow louver width, wherein said wide louvers and said narrow louvers are disposed in a mixed arrangement.  
   
   
       18 . The heat exchanger as recited in  claim 15 , wherein adjacent fins among said plurality of heat exchanger fins are joined with each other.  
   
   
       19 . A condenser, comprising a plurality of heat exchanger fins disposed in parallel to an air introduction direction and arranged in parallel at certain intervals in a direction perpendicular to the air introduction direction, and a refrigerant passage through which refrigerant passes, each of said plurality of heat transfer plates being provided with a plurality of louvers arranged at certain intervals in the air introduction direction, said plurality of louvers being formed by cutting and bending said heat exchanger fin so that the air is passed while being guided by said plurality of louvers to condense the refrigerant by exchanging heat between the air and the refrigerant, 
 wherein said plurality of louvers include plural kinds of louvers different in louver width, said louver width being defined by a length of said louver along which the heat medium passes, and    wherein said plural kinds of louvers different in louver width are disposed in a mixed arrangement.    
   
   
       20 . A condenser, comprising a pair of heat exchanging tubes disposed in parallel at a certain interval, and a plurality of heat exchanger fins each disposed in parallel to an air introduction direction and arranged in parallel with each other at certain intervals in a direction perpendicular to the air introduction direction, and each of said plurality of heat exchanger fins being provided with a plurality of louvers arranged at certain intervals in the air introduction direction, said plurality of louvers being formed by cutting and bending said heat exchanger fin so that the air is passed while being guided by said plurality of louvers to condense refrigerant by exchanging heat between the air and the refrigerant, 
 wherein said plurality of louvers include plural kinds of louvers different in louver width, said louver width being defined by a length of said louver along which the air passes, and    wherein said plural kinds of louvers different in louver width are disposed in a mixed arrangement.    
   
   
       21 . The condenser as recited in  claim 19 , wherein said plurality of louvers include wide louvers each having a wide louver width and narrow louvers each having a narrow louver width, wherein said wide louvers and said narrow louvers are disposed in a mixed arrangement.  
   
   
       22 . The condenser as recited in  claim 19 , wherein adjacent fins among said plurality of heat exchanger fins are joined with each other.  
   
   
       23 . A condenser for use in car air-conditioning refrigeration cycles, comprising: 
 a plurality of heat exchanger fins disposed in parallel to an air introduction direction and arranged in parallel at certain intervals in a direction perpendicular to the air introduction direction; and    a refrigerant passage through which refrigerant passes,    wherein each of said plurality of heat transfer plates is provided with a plurality of louvers arranged at certain intervals in the air introduction direction, said plurality of louvers being formed by cutting and bending said heat exchanger fin so that the air is passed while being guided by said plurality of louvers to condense the refrigerant by exchanging heat between the air and the refrigerant, and    wherein said plurality of louvers include plural kinds of louvers different in louver width, said louver width being defined by a length of said louver along which the heat medium passes, and    wherein said plural kinds of louvers different in louver width are disposed in a mixed arrangement.    
   
   
       24 . A condenser for use in car air-conditioning refrigeration cycles, comprising: 
 a pair of heat exchanging tubes disposed in parallel at a certain interval; and    a plurality of heat exchanger fins each disposed in parallel to an air introduction direction and arranged in parallel with each other at certain intervals in a direction perpendicular to the air introduction direction, wherein each of said plurality of heat exchanger fins is provided with a plurality of louvers arranged at certain intervals in the air introduction direction, said plurality of louvers being formed by cutting and bending said heat exchanger fin so that the air is passed while being guided by said plurality of louvers to condense refrigerant by exchanging heat between the air and the refrigerant,    wherein said plurality of louvers include plural kinds of louvers different in louver width, said louver width being defined by a length of said louver along which the air passes, and    wherein said plural kinds of louvers different in louver width are disposed in a mixed arrangement.    
   
   
       25 . An evaporator, comprising a plurality of heat exchanger fins disposed in parallel to an air introduction direction and arranged in parallel at certain intervals in a direction perpendicular to the air introduction direction, and a refrigerant passage through which refrigerant passes, each of said plurality of heat transfer plates being provided with a plurality of louvers arranged at certain intervals in the air introduction direction, said plurality of louvers being formed by cutting and bending said heat exchanger fin so that the air is passed while being guided by said plurality of louvers to evaporate the refrigerant by exchanging heat between the air and the refrigerant, 
 wherein said plurality of louvers include plural kinds of louvers different in louver width, said louver width being defined by a length of said louver along which the heat medium passes, and    wherein said plural kinds of louvers different in louver width are disposed in a mixed arrangement.    
   
   
       26 . An evaporator, comprising a pair of heat exchanging tubes disposed in parallel at a certain interval, and a plurality of heat exchanger fins each disposed in parallel to an air introduction direction and arranged in parallel with each other at certain intervals in a direction perpendicular to the air introduction direction, and each of said plurality of heat exchanger fins being provided with a plurality of louvers arranged at certain intervals in the air introduction direction, said plurality of louvers being formed by cutting and bending said heat exchanger fin so that the air is passed while being guided by said plurality of louvers to evaporate refrigerant by exchanging heat between the air and the refrigerant, 
 wherein said plurality of louvers include plural kinds of louvers different in louver width, said louver width being defined by a length of said louver along which the air passes, and    wherein said plural kinds of louvers different in louver width are disposed in a mixed arrangement.    
   
   
       27 . The evaporator as recited in  claim 25 , wherein said plurality of louvers include wide louvers each having a wide louver width and narrow louvers each having a narrow louver width, wherein said wide louvers and said narrow louvers are disposed in a mixed arrangement.  
   
   
       28 . The evaporator as recited in  claim 25 , wherein adjacent fins among said plurality of heat exchanger fins are joined with each other.  
   
   
       29 . An evaporator for use in car air-conditioning refrigeration cycles, comprising: 
 a plurality of heat exchanger fins disposed in parallel to an air introduction direction and arranged in parallel at certain intervals in a direction perpendicular to the air introduction direction; and    a refrigerant passage through which refrigerant passes,    wherein each of said plurality of heat transfer plates is provided with a plurality of louvers arranged at certain intervals in the air introduction direction, said plurality of louvers being formed by cutting and bending said heat exchanger fin so that the air is passed while being guided by said plurality of louvers to evaporate the refrigerant by exchanging heat between the air and the refrigerant, and    wherein said plurality of louvers include plural kinds of louvers different in louver width, said louver width being defined by a length of said louver along which the heat medium passes, and    wherein said plural kinds of louvers different in louver width are disposed in a mixed arrangement.    
   
   
       30 . An evaporator for use in car air-conditioning refrigeration cycles, comprising: 
 a pair of heat exchanging tubes disposed in parallel at a certain interval; and    a plurality of heat exchanger fins each disposed in parallel to an air introduction direction and arranged in parallel with each other at certain intervals in a direction perpendicular to the air introduction direction, wherein each of said plurality of heat exchanger fins is provided with a plurality of louvers arranged at certain intervals in the air introduction direction, said plurality of louvers being formed by cutting and bending said heat exchanger fin so that the air is passed while being guided by said plurality of louvers to evaporate the refrigerant by exchanging heat between the air and the refrigerant,    wherein said plurality of louvers include plural kinds of louvers different in louver width, said louver width being defined by a length of said louver along which the air passes, and    wherein said plural kinds of louvers different in louver width are disposed in a mixed arrangement.