Evaporator, manufacturing method of the same, header for evaporator and refrigeration system

Abstract

The evaporator includes the upper side and lower header members 10 and 50 disposed at the upper and lower end of the core 1. One end of each tube 6 constituting the upstream-side tube group P 1 is connected to the inlet-side tank 11, while the other end to the lower header member 50. One end of each tube 7 constituting the downstream-side tube group P 2 is connected to the outlet-side tank 12, while the other end to the lower header member 50. The refrigerant flowed into the inlet-side tank 11 is introduced into the outlet-side tank 12 by passing through the upstream-side tube group P 1 , the lower header member 50 and the downstream-side tube group P 2 , so that the refrigerant evaporates by exchanging heat with ambient air A. Accordingly, it improves the heat exchange performance and decreases the thickness.

1 . A refrigerant-turn-side header member for an evaporator with a core including an upstream-side heat exchanging tube group and a downstream-side heat exchanging tube group disposed front and rear, each of said heat exchanging tube groups including a plurality of heat exchanging tubes arranged in parallel with each other at certain intervals, said header member comprising: 
 a header plate for fixing an end portion of each of said heat exchanging tubes in a penetrated manner;    a header cover attached to said header plate so as to cover one surface side thereof; and    a partition for forming an inflow-side tank and an outflow-side tank by dividing a hollow portion surrounded by said header plate and said header cover front and rear, said partition having communication apertures for communicating with said tanks;    wherein at least one of said header plate and the said header cover is a press-formed metal plate, and    wherein refrigerant passing through said upstream-side heat exchanging tube group is introduced into said inflow-side tank and then introduced into said outflow-side tank via said communication apertures, while said refrigerant in said outflow-side tank is introduced into said downstream-side heat exchanging tube group.    
   
   
       2 . The refrigerant-turn-side header member for an evaporator as recited in  claim 1 , wherein both of said header plate and said header cover are formed by a press-formed metal plate member respectively, and wherein said partition is integrally formed with said header cover by folding a widthwise middle portion of said metal plate constituting said header cover along a longitudinal direction thereof.  
   
   
       3 . The refrigerant-turn-side header member for an evaporator as recited in  claim 1 , wherein one of said header plate and said header cover is a press-formed metal plate, and the other thereof is an extruded molded article.