Heat exchanger with partial housing

Abstract

A heat exchanger, including a coolant inlet, a coolant outlet, and flat tubes consisting of two joined parts having broad and narrow sides, the joined parts being stacked on top of one another and joined along their edges to form channels therebetween for flow of gas cooled by coolant flowing through channels between the flat tubes. A partial housing includes a first side, a second side, and a joining side between the first and second sides, with the flat tubes being arranged in the partial housing. The joining side of the housing has at least one cut-out with at least one joining strip between the first and second sides, with one of the inlet and outlet in the joining strip.

1 . A heat exchanger comprising: 
 flat tubes consisting of two joined parts having broad and narrow sides, said joined parts being stacked on top of one another and joined along their edges to form channels therebetween for flow of gas cooled by coolant flowing through channels between the flat tubes;    a partial housing with a first side, a second side, and a joining side between said first and second sides, said flat tubes being arranged in said partial housing; and    a coolant inlet and a coolant outlet;    wherein said housing joining side has at least one cut-out with at least one joining strip between the first and second sides, with one of said inlet and outlet in said joining strip.    
   
   
       2 . The heat exchanger of  claim 1 , wherein there are two joining strips between the first and second sides, and said inlet is in one of said joining strips and said outlet is in the other of said joining strips.  
   
   
       3 . The heat exchanger of  claim 1 , wherein at least one cut-out in the joining side extends to the first and second side.  
   
   
       4 . The heat exchanger of  claim 1 , wherein the joining strip joins the first and second sides together.  
   
   
       5 . The heat exchanger of  claim 1 , further comprising an inlet collecting tank on one side of the flat tubes and an outlet collecting tank on the opposite side of the flat tubes whereby gas flowing in the flat tubes flows in one direction.  
   
   
       6 . The heat exchanger of  claim 1 , further comprising a flow separator in said flat tubes defining a U-shape for the gas channels in said flat tubes, and inlet and outlet collecting tanks on one end of the flat tubes.  
   
   
       7 . The heat exchanger of  claim 1 , wherein the two parts of the flat tubes have a raised shaped edging with a gap at least at two positions.  
   
   
       8 . The heat exchanger of  claim 7 , wherein the two parts of the flat tubes are joined at joints along raised edging, and said gaps at each position are stacked in alignment with each other.  
   
   
       9 . The heat exchanger of  claim 7 , wherein the joining strips contain the inlet and the outlet and are aligned with the gaps in the raised formed edging, said inlet and outlet being in hydraulic connection with the coolant channels formed in the raised formed edging.  
   
   
       10 . The heat exchanger of  claim 1 , further comprising beads on opposite edges of joining strips, said beads encompassing the joining edge formed by the two parts of the flat tubes.  
   
   
       11 . The heat exchanger of  claim 1 , wherein said flat tubes are curved in the direction of flow of the gas.  
   
   
       12 . The heat exchanger of  claim 1 , wherein the heat exchanger has a curved shape with a gas inlet on one side and a gas outlet on the opposite side.  
   
   
       13 . A heat exchanger comprising: 
 flat tubes consisting of two joined parts having broad and narrow sides, said joined parts being stacked on top of one another and joined along their edges to form channels therebetween for flow of gas cooled by coolant flowing through channels between the flat tubes;    a partial housing with a first side, a second side and a joining side between said first and second sides, said flat tubes being arranged in said partial housing; and    a coolant inlet and a coolant outlet;    wherein said housing joining side includes at least one single piece joining strip between the first and second sides, with one of said inlet and outlet in said joining strip.    
   
   
       14 . The heat exchanger of  claim 13 , wherein the joining strips join the first and second sides together.  
   
   
       15 . The heat exchanger of  claim 13 , further comprising a flow separator in said flat tubes defining a U-shape for the gas channels in said flat tubes, and inlet and outlet collecting tanks on one end of the flat tubes.  
   
   
       16 . The heat exchanger of  claim 13 , wherein the two parts of the flat tubes have a raised shaped edging with a gap at least at two positions.  
   
   
       17 . The heat exchanger of  claim 16 , wherein the two parts of the flat tubes are joined at joints along raised edging, and said gaps at each position are stacked in alignment with each other.  
   
   
       18 . The heat exchanger of  claim 16 , wherein the joining strips contain the inlet and the outlet and are aligned with the gaps in the raised formed edging, said inlet and outlet being in hydraulic connection With the coolant channels formed in the raised formed edging.  
   
   
       19 . The heat exchanger of  claim 13 , further comprising beads on opposite edges of the joining strips, said beads encompassing the joining edge formed by the two parts of the flat tubes.  
   
   
       20 . The heat exchanger of  claim 13 , wherein the heat exchanger has a curved shape with a gas inlet on one side and a gas outlet on the opposite side.