| 摘要 |
PURPOSE:To miniaturize the titled heat exchanger and at the same time enhance it safety by eliminating the external exposure of a high temperature bypath by a structure wherein the bypath, through which exhaust flows, is assembled within the main body of the heat exchanger. CONSTITUTION:The exhaust lead through an air supply opening 12 is divided in an outer flow passage 21 and an inner flow passage 22 within a main body. Because the outer flow passage 21 contacts with the water passage 16 of a heat exchange part 17, the exhaust flowing through the outer flow passage 21 heat-exchanges and heats the water in the water passage 16. When window openings 35b in the lower stage are closed and window openings 35a in the upper stage by turning an internal tubular pipe 28 by means of a turning lever 33, the upper portion of the outer flow passage 21 communicates to an exhaust opening 13 and consequently the exhaust flows to the outer flow passage 21 side so as to pass through the heat exchange part 17 in order for the exhaust to heat-exchange at its maximum. On the other hand, when the window openings 35a are completely closed and the window openings 35b are fully open, all the exhaust flows to the inner flow passage 22 side, resulting in stopping heat exchange. A double tubular body 26 can be removed together with a baffle 18 from the main body 11 by lifting the double tubular body 26 after unscrewing fixing screws 30. Thus, the miniaturization and sure operation of the titled heat exchanger can be realized. |
