JPS63158675U

JPS63158675U -

Info

Publication number: JPS63158675U
Application number: JP4993787U
Authority: JP
Priority date: 1987-04-03
Filing date: 1987-04-03
Publication date: 1988-10-18

Description

[Brief explanation of the drawing]

第１図は本考案による給排気筒接続装置の実施
の一例を示す断面図、第２図は接続以前の状態を
示す断面図、第３図は本考案の適用例を示す燃焼
機器の説明図である。第４図は従来例を示す説明
図である。１……外筒、１ｂ……外筒の端部、２……内筒
、２ｂ……内筒の端部、４……環状突条、５……
ビス孔、６……ストツパー、７……環状凹条、Ｌ
_１……端部１ｂとビス孔５との距離、Ｌ_２……ス
トツパー６と環状凹条との距離。 Fig. 1 is a cross-sectional view showing an example of the implementation of the supply and exhaust pipe connection device according to the present invention, Fig. 2 is a cross-sectional view showing the state before connection, and Fig. 3 is an explanatory diagram of a combustion equipment showing an example of application of the present invention. It is. FIG. 4 is an explanatory diagram showing a conventional example. DESCRIPTION OF SYMBOLS 1... Outer cylinder, 1b... End of outer cylinder, 2... Inner cylinder, 2b... End of inner cylinder, 4... Annular protrusion, 5...
Screw hole, 6... Stopper, 7... Annular groove, L
₁ ...Distance between the end portion 1b and the screw hole 5, _L2 ...Distance between the stopper 6 and the annular groove.

Claims

[Scope of utility model registration request]

In an air supply/exhaust pipe connection device for combustion equipment that connects each end of an inner and outer cylinder by fitting each other with each other, a plurality of screw holes are formed on the circumference at a certain distance from the end of the outer cylinder. On the other hand, a stopper is formed on the outer periphery of the end of the inner cylinder, and an annular groove is formed on a circumference spaced apart from the stopper by the same distance as the fixed distance of the outer cylinder toward the end. Fit the outer cylinder onto the inner cylinder, bring the end of the outer cylinder into contact with the stopper of the inner cylinder, position the screw hole of the outer cylinder and the annular groove of the inner cylinder, and screw the screw into the screw hole. An air supply and exhaust pipe connection device for combustion equipment, characterized in that the tip of a screw is inserted into an annular groove in an inner cylinder.