JPH02124441U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a sectional view of a heat exchanger showing an embodiment of this invention, Fig. 2 is an enlarged sectional view of the main parts, Fig. 3 is a bottom view of a heat shield, and Fig. 4 is a combination of heat shields. FIG. 5 is a sectional view showing an example of a conventional heat exchanger, and FIG. 6 is an enlarged sectional view of the main part. 2...Water chamber (liquid chamber), 7...Combustion chamber, 12...Exhaust gas collection chamber, 13...Smoke pipe, 17...Heat shield plate, 17A~
17D...Plate, 18, 19...Rising flange, 20
...Flanged opening, 21...Claw piece, 22...Engagement hole.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A combustion chamber facing the burner, a liquid chamber, an exhaust gas collection chamber, and a plurality of tubes that are penetrated by the liquid chamber and connect the combustion chamber and the exhaust gas collection chamber. 1. A heat exchanger equipped with a smoke tube, characterized in that a joint part on the combustion chamber side between the wall surface forming the liquid chamber and the smoke tube is covered with a heat shield plate. (2) The heat shield plate is an annular plate having rising flanges on the inner and outer peripheries, and a plurality of flanged openings that are fitted into one end of the smoke pipe as stated in claim 1 of the utility model registration claim. heat exchanger. (3) The heat shield plate has a claw piece at one end and a plurality of plates each having a larger engagement hole than the claw piece at the other end, which is formed into an annular shape by engaging the claws and the engagement holes. The heat exchanger according to claim 2 of the utility model registration claim, which is connected.