JPH02147669U

JPH02147669U -

Info

Publication number: JPH02147669U
Application number: JP5144889U
Authority: JP
Priority date: 1989-04-28
Filing date: 1989-04-28
Publication date: 1990-12-14

Description

[Brief explanation of drawings]

第１図はこの考案の好適一実施例を示す断面図
、第２図は第１図の−線断面図、第３図はフ
インの他の実施例を示す断面図である。図中、２は熱交換流体の流路、１２は外管、１
３は内管、１４はスペーサ、１５は折返路、１６
はフインである。 FIG. 1 is a sectional view showing a preferred embodiment of this invention, FIG. 2 is a sectional view taken along the line -- in FIG. 1, and FIG. 3 is a sectional view showing another embodiment of the fin. In the figure, 2 is a heat exchange fluid flow path, 12 is an outer tube, and 1
3 is an inner tube, 14 is a spacer, 15 is a return path, 16
is Finn.

補正平２．１．２２実用新案登録請求の範囲を次のように補正する
。Amendment 2.1.22. The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】１排気ガス等の熱交換流体の流路にこれを横断
させて熱交換流体の流れ方向及びその流路の断面
に沿う方向に適宜間隔で筒状の外管を形成し、こ
れら外管内に内管を挿入して外管内に被熱交換流
体の折返路を形成した熱交換器において、上記外
管列を千鳥状に配設し、これら外管の外周面に熱
交換流体の流れに沿つたフインを設け、上記外管
と内管との間にその軸方向に沿つて螺旋状のスペ
ーサを介設したことを特徴とする熱交換器。２請求項１記載の熱交換器において、上記外管
をセラミツクで形成したことを特徴とする熱交換
器。[Claims for Utility Model Registration] 1. Cylindrical outer tubes are provided at appropriate intervals in the flow direction of the heat exchange fluid and in the direction along the cross section of the flow path, crossing the flow path of a heat exchange fluid such as exhaust gas. In a heat exchanger in which inner tubes are inserted into these outer tubes to form a return path for the fluid to be heat exchanged in the outer tubes, the outer tube rows are arranged in a staggered manner, and A heat exchanger characterized in that fins are provided along the flow of heat exchange fluid, and a spiral spacer is interposed between the outer tube and the inner tube along the axial direction thereof. 2. The heat exchanger according to claim 1, wherein the outer tube is made of ceramic.

Claims

[Claims for Utility Model Registration] 1. Cylindrical outer tubes are formed at appropriate intervals in the flow direction of the heat exchange fluid and in the direction along the cross section of the flow by crossing the flow path of a heat exchange fluid such as exhaust gas. In a heat exchanger in which an inner tube is inserted into an outer tube to form a return path for a fluid to be heat exchanged in the outer tube, the rows of outer tubes are arranged in a staggered manner, and heat exchange is performed on the outer peripheral surface of these outer tubes. A heat exchanger characterized in that fins are provided along the flow of fluid, and a spiral spacer is interposed between the outer tube and the inner tube along the axial direction thereof. 2. The heat exchanger according to claim 1, wherein the outer tube is made of ceramic.