Heat exchanger

Abstract

A heat exchanger is provided and includes a core that has numerous tubes through which a first fluid flows and around which a second fluid flows, and a reservoir that has a body with at least one chamber through which a first fluid can flow, and a base that protrudes outward from the body at the side facing the core and at least partially encircles a hole opening into the chamber. The core has a closure plate attached to the reservoir for closing the hole therein. The plate has a bottom that the reservoir bears on, through which ends of the tubes opening into the chamber pass, and numerous retaining elements, which bear on the upper surface of the base facing away from the core.The durability of the heat exchanger can be improved in that a stop for at least one retaining element is formed on the upper surface of the base of the reservoir, which protrudes from this upper surface on a side of the retaining element facing away from the body of the reservoir.

1 - 15 . (canceled) 
     
     
         16 . A heat exchanger for a motor vehicle, for thermal exchange between a first fluid flowing through the inside of the heat exchanger and a second fluid flowing outside the heat exchanger, comprising:
 a core comprising a plurality of tubes through which a first fluid can flow, and around which a second fluid can flow,   at least one reservoir, the at least one reservoir comprises a body with at least one chamber through which the first fluid can flow, and a base, which protrudes from a side of the body of the reservoir facing the core, the base at least partially encircles a hole opening into the chamber,   wherein the core further comprises at least one closure plate, which is attached to the reservoir to close the hole,   wherein the closure plate has a bottom on which the reservoir bears, through which ends of the tubes pass, opening into the chamber,   wherein the closure plate has a plurality of retaining elements that bear on an upper surface of the base of the reservoir facing away from the core such that the base is between the bottom of the plate and the retaining elements, wherien   a stop for at least one retaining element is formed on the upper surface of the base of the reservoir, the stop protrudes from the upper surface of the base on a side of the retaining element facing away from the body of the reservoir such that the retaining element is between the body of the reservoir and the stop.   
     
     
         17 . The heat exchanger according to  claim 16 , wherein the respective retaining element bears on the respective stop. 
     
     
         18 . The heat exchanger according to  claim 16 , wherein the stop is a plurality of stops, with each of the plurality of stops for at least a plurality of the retaining elements. 
     
     
         19 . The heat exchanger according to  claim 16 , wherein the retaining elements press the reservoir base against the bottom of the plate. 
     
     
         20 . The heat exchanger according to  claim 16 , wherein
 the closure plate and retaining elements formed thereon are made of metal,   the reservoir is made of plastic.   
     
     
         21 . The heat exchanger according to  claim 16 , wherein the respective stop is integrally formed on the reservoir base. 
     
     
         22 . The heat exchanger according to  claim 16 , wherein the respective stop has a complementary shape to the respective retaining element on its side facing the respective retaining element. 
     
     
         23 . The heat exchanger according to  claim 16 , wherein the respective retaining element bears two-dimensionally on the surface of the reservoir base. 
     
     
         24 . The heat exchanger according to  claim 16 , wherein
 the closure plate comprising a collar protruding from the bottom of the plate, at least partially encircling the bottom of the plate, and a retaining band at least partially encircling the bottom of the plate, which is connected to the collar by a plurality of webs,   a retaining element is formed on the retaining band between each pair of adjacent webs,   the retaining elements protrude inward from the retaining band in relation to the webs, and thus extend over the reservoir base.   
     
     
         25 . The heat exchanger according to  claim 24 , wherein
 a plurality of projections are formed on the body of the reservoir that protrude outward,   the retaining band bears on the projections near the webs.   
     
     
         26 . The heat exchanger according to  claim 25 , wherein stops are disposed between pairs of adjacent projections on the reservoir base, and spaced apart from adjacent projections. 
     
     
         27 . The heat exchanger according to  claim 25 , wherein the projections are directly adjacent to the reservoir base and thus flush toward the exterior. 
     
     
         28 . The heat exchanger according to  claim 24 , wherein the retaining elements are formed by curved segments of the retaining band, which arc toward the body of the reservoir. 
     
     
         29 . The heat exchanger according to  claim 28 , wherein
 the retaining elements are concave on the side facing the stops,   the stops are convex on the side facing the retaining elements.   
     
     
         30 . A coolant circuit for a motor vehicle that comprises at least one heat exchanger according to  claim 16 . 
     
     
         31 . The heat exchanger according to  claim 18 , wherein the plurality of stops include a respective stop for every retaining element of the plurality of retaining elements.