HEAT EXCHANGER WITH ANNULAR INLET/OUTLET FITTING

摘要

A heat exchanger has first and second flow passages with a communication passage therebetween. An inlet/outlet opening in a wall of the first passage receives a one-piece inlet/outlet fitting having an inner tube and an outer ring connected by webs, the tube and ring defining inner and outer flow passages in direct flow communication with the first and second flow passages, respectively. A first end of the tube and an outer surface of the ring are provided with resilient sealing members for sealing within a bore of a coolant manifold. The ring has a planar sealing surface which is sealed to the wall of the first passage, and the second end of the inner tube extends through the first fluid flow passage and is sealed inside the communication passage. Lateral adjustment of the fitting within the inlet/outlet opening compensates for stack-up tolerance variation in the heat exchanger.

主权项

1. A heat exchanger comprising:
at least a first enclosed fluid flow passage and a second enclosed fluid flow passage, wherein each of the fluid flow passages is defined between a first wall and a second wall; first and second communication openings provided in the first wall of each of the first and second flow passages, wherein the first communication opening of the first flow passage aligns with the first communication opening of the second flow passage and the second communication opening of the first flow passage aligns with the second communication opening of the second flow passage; an inlet/outlet opening provided in the second wall of the first flow passage, wherein the inlet/outlet opening is aligned with the first communication opening in the first wall of the first flow passage; an inlet/outlet fitting received in the inlet/outlet opening, wherein the inlet/outlet fitting has an inner tubular passage surrounded by an outer annular passage, wherein the inner tubular passage is defined by an inner cylindrical tube having a first end and a second end, wherein the inlet/outlet fitting further comprises an outer annular ring having a first end and a second end, wherein the outer annular ring surrounds the inner cylindrical tube and is connected thereto, and wherein the outer annular passage is defined between the inner cylindrical tube and the outer annular ring; wherein the second end of the outer annular ring has a planar sealing surface surrounding the outer annular passage, and wherein the planar sealing surface of the outer annular ring is sealingly connected to an area of the second wall of the first flow passage surrounding the inlet/outlet opening, such that the first flow passage is in fluid flow communication with the outer annular passage of the inlet/outlet fitting; and wherein the second end of the inner cylindrical tube extends through the first flow passage and is in sealed fluid flow communication with the second flow passage, such that the second flow passage is in fluid flow communication with the inner tubular passage of the inlet/outlet fitting.