Thermostat-control valve for heat exchanger

Abstract

A control valve for a heat exchanger adapted to temper the temperature of a first fluid by heat exchange with a second fluid. The control valve includes a housing adapted to fasten adjacent a wall of the heat exchanger, with the housing defining a chamber separate from a compartment. When fastened to the heat exchanger, the housing communicates the compartment with the flow channels of the second fluid, and opens the chamber to flow of the first fluid via a passage through the adjacent wall of the heat exchanger. A valve member is in the compartment for selectively controlling communication of the compartment with a source of the second fluid, and a thermostat is positioned in the chamber to contact the flow of the first fluid, with the thermostat controlling the valve member responsive to the temperature of the first fluid.

1 . A control valve for a heat exchanger adapted to temper the temperature of a first fluid by heat exchange with a second fluid, said heat exchanger having separate flow channels for the first and second fluids, said control valve comprising: 
 a housing adapted to fasten adjacent a wall of the heat exchanger, said housing defining a chamber separate from a compartment, said housing when fastened to the heat exchanger 
 communicating said compartment with the flow channels of said second fluid, and  
 opening said chamber to flow of said first fluid via a passage through the adjacent wall of the heat exchanger;  
   a valve member in said compartment for selectively controlling communication of said compartment with a source of said second fluid; and    a thermostat positioned in said chamber to contact said flow of said first fluid, said thermostat controlling said valve member responsive to the temperature of said fluid.    
   
   
       2 . The device of  claim 1 , further comprising a flow deflection element in said passage.  
   
   
       3 . The device of  claim 2 , wherein said flow deflection element is an obliquely positioned vane in said heat exchanger wall adjacent said chamber.  
   
   
       4 . The device of  claim 2 , wherein said flow deflection element is deformed in said heat exchanger wall.  
   
   
       5 . The control valve of  claim 1 , wherein 
 said housing includes first and second connectors, said first connector being adapted to connect to a first source of said second fluid and said second connector being adapted to connected to a second source of said second fluid, said second fluid from said second source being warmer than said second fluid from said first source; and    said valve member is controlled by said thermostat to open either said first source, said second source or a combination of said first and second sources to said compartment.    
   
   
       6 . A heat exchanger adapted to temper the temperature of a first fluid by heat exchange with a second fluid, comprising: 
 a wall of said heat exchanger;    separate flow channels for the first and second fluids;    a control valve having 
 a housing fastened adjacent said wall and defining a chamber separate from a compartment, said housing 
 communicating said compartment with the flow channels of said second fluid, and  
 opening said chamber to flow of said first fluid via a passage through the adjacent wall of the heat exchanger,  
 
 a valve member selectively controlling communication of said compartment with at least one source of said second fluid, and  
 a thermostat positioned in said chamber to contact said flow of said first fluid, said thermostat controlling said valve member responsive to the temperature of said first fluid.  
   
   
   
       7 . The heat exchanger of  claim 6 , further comprising a flow deflection element in said passage.  
   
   
       8 . The heat exchanger of  claim 7 , wherein said flow deflection element is an obliquely positioned vane in said heat exchanger wall adjacent said chamber.  
   
   
       9 . The heat exchanger of  claim 7 , wherein said flow deflection element is deformed in said heat exchanger wall.  
   
   
       10 . The heat exchanger of  claim 6 , wherein 
 said housing includes first and second connectors, said first connector being adapted to connect to a first source of said second fluid and said second connector being adapted to connected to a second source of said second fluid, said second fluid from said second source being warmer than said second fluid from said first source; and    said valve member is controlled by said thermostat to open either said first source, said second source or a combination of said first and second sources to said compartment.    
   
   
       11 . The heat exchanger of  claim 6 , wherein the adjacent wall has a protrusion around said passage.  
   
   
       12 . The heat exchanger of  claim 6 , wherein said wall is a wall of a flow channel for said first fluid.