JPS62185301U

JPS62185301U -

Info

Publication number: JPS62185301U
Application number: JP7340886U
Authority: JP
Priority date: 1986-05-15
Filing date: 1986-05-15
Publication date: 1987-11-25

Description

[Brief explanation of the drawing]

第１図はこの考案における一実施例の説明図、
第２図は第１図の―断面図、第３図は第２図
の一部拡大図、第４図は伝熱促進板の他の実施例
の説明図、第５図は従来の実施例を示す縦断面図
、第６図は第５図の横断面図、第７図は第６図の
一部拡大図である。１は上部管寄せ、２は下部管寄せ、３は内側水
管、４は外側水管、５は缶体カバー、６は燃焼ガ
ス路、７は煙道、８は燃焼装置、９は燃焼室、１
０は伝熱促進板。 FIG. 1 is an explanatory diagram of an embodiment of this invention.
Fig. 2 is a sectional view of Fig. 1, Fig. 3 is a partially enlarged view of Fig. 2, Fig. 4 is an explanatory diagram of another embodiment of the heat transfer accelerator plate, and Fig. 5 is a conventional embodiment. 6 is a cross-sectional view of FIG. 5, and FIG. 7 is a partially enlarged view of FIG. 6. 1 is an upper header, 2 is a lower header, 3 is an inner water pipe, 4 is an outer water pipe, 5 is a can cover, 6 is a combustion gas path, 7 is a flue, 8 is a combustion device, 9 is a combustion chamber, 1
0 is a heat transfer accelerator plate.

Claims

[Scope of utility model registration request]

Both the upper header 1 and the lower header 2 are formed in an annular shape, and the upper and lower headers 1 and 2 are connected to a large number of inner water pipes 3.
These inner water pipes 3 are arranged as an annular water pipe wall with a slight gap A, and the upper and lower headers 1 and 2 are connected by an outer water pipe 4, and the pitch angle A of the inner water pipe and the outer water pipe A state in which the pitch angles B of and B are made equal, and each is shifted by half a pitch angle,
In a multi-tube once-through boiler in which a slight gap is formed between the inner water pipe and the outer water pipe, a pair of heat transfer promoting plates 10 are provided on the left and right side parts of the outer water pipe on the side opposite to the inner water pipe to promote the heat transfer. The plate is attached to the outer water pipe in such a way that the combustion gas passes through the gap A between the adjacent inner water pipe, branches left and right from the gap B, and passes through the gap C between the heat transfer promoting plates. A multi-tube once-through boiler, which is fixed to the outside of the boiler and extends over almost the entire length of its outer water pipes.