| 摘要 |
A disassembleable core heat exchanger is disclosed. The heat exchanger includes an elongated housing which defines a first passageway. A first end portion defines a second passageway which registers with the "passageway". A first tube retaining plate is metallurgically sealed within the first opening and a plurality of core tubes extend through and are sealingly engaged to the first tube retaining plate. The core tubes slidably extend through the passageway to a second tube retaining plate which is disposed remote from the first tube retaining plate. A first seal is disposed between the first end portion and the elongated housing. A second seal is disposed between a second end portion and the passageway. The second end portion cooperates with the second tube retaining plate. The two end portions are adjustably clamped relative each other to seal the second tube retaining plate relative to the elongated housing. A method of making the heat exchanger is also disclosed which includes cutting through one end of a conventional heat exchanger housing in the vicinity of the second tube retaining plate and cutting said second tube retaining plate circumferentially to separate the same from the housing and cutting through the opposite end of the housing to enable the removal of the tube core. A ring is slipped over the periphery of the second tube retaining plate and brazed thereto and a gasket is slipped over the tube core to form a seal between the first end portion and the elongated housing. An O-ring is slipped over the ring after the replacement of the core tubes within the housing. The O-ring seal forms a seal between the ring and the housing when the two end portions are moved towards each other by adjustable tie rods. |
