JP3048559U - Heat exchanger core support mounting structure - Google Patents

Abstract

(57) [Problem] To provide a heat exchanger of a type in which end caps are fitted to both ends of a cylindrical tank, in which a core support can be easily positioned. A notch (5b) is formed at an edge of a rib (5a) of an end cover (5) on a core 3 side, and a hook-shaped or L-shaped engaging portion (6a) is formed at both longitudinal ends of a core support (6). The tip of the engaging portion 6a is aligned with the notch 5b.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a brazing structure of a core support arranged on both sides of a core composed of a large number of fins and tubes, and in particular, to provide an accurate mounting structure in which the core support does not shift during brazing. It is.

[0002]

[Prior art]

 It is known that a metal plate is formed in a tubular shape as a heat exchanger tank, and end covers are fitted to both ends thereof. When a core is placed between the pair of heat exchanger tanks and core supports are attached to both sides of the core, the parts are integrally brazed and fixed while holding the core support with an appropriate jig. I was

[0003]

[Problems to be solved by the invention]

 However, in the heat exchanger tank having such an end cover, it is difficult to position the core support, and the core support may be displaced during brazing of each component. Therefore, the present invention adopts the following configuration in order to solve the problem.

[0004]

[Means for Solving the Problems]

 The core support mounting structure of the heat exchanger according to the present invention includes a core 3 in which a number of fins 1 and tubes 2 are arranged in parallel, a pair of cylindrical tank bodies 4 in which both ends of each of the tubes 2 are penetrated. A plurality of short cylindrical ribs 5a having an inner periphery aligned with the outer periphery of the tank body 4 are formed on the periphery, and a plurality of notches 5b are formed on the edge of the rib 5a on the core 3 side. A hook-shaped or L-shaped engaging portion 6a is formed at both ends in the longitudinal direction of the end cover 5 and the core 3, and the leading end of the engaging portion 6a is aligned with the cutout portion 5b. The end cover 5 is attached to the open end of the tank body 4, and the engagement portion of the core support 6 is fitted to the notch 5 b of the end cover 5. 6a is fitted, and the respective parts are integrally brazed and fixed. It is.

Therefore, according to the heat exchanger core support mounting structure of the present invention, the engaging portion 6a of the core support 6 is aligned with the notch 5b of the end cover 5, and the rib 5a of the end cover 5 is Therefore, the core support 6 is positioned at an appropriate position.

[0006]

[Embodiment of the invention]

 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of a main part of the core support mounting structure of the heat exchanger of the present invention, and FIG. 2 is a longitudinal sectional view of a main part of the core support mounting structure. The heat exchanger includes a core 3 in which a number of fins 1 and tubes 2 are arranged in parallel, a pair of cylindrical tank bodies 4 penetrated at both ends of each tube 2, and a pair of tubes 3 located at both ends of the core 3. And a core support 6. The tank body 4 has a rectangular aluminum plate with a brazing material clad on the surface, a large number of tube insertion holes formed in the center in the width direction, and a cylindrical shape formed by bending the tube in the width direction. Both edges are overlapped. End covers 5 are fitted to both ends of the tank body 4. The end cover 5 has a short rib 5a having an inner periphery aligned with the outer periphery of the tank body 4 formed on the periphery thereof, and a cutout 5b formed on the edge on the core 3 side.

Next, the core support 6 is formed in a U-shaped cross section except for both ends in the longitudinal direction, and hook-shaped engaging portions 6a are formed at both ends in the longitudinal direction. The tip of the engaging portion 6a is aligned with the notch 5b of the end cover 5. In order to assemble this heat exchanger, for example, both ends of each tube 2 are inserted into the tube insertion hole of the tank main body 4 with the overlapping portion of the tank main body 4 being opened to a certain extent, and an expanding jig (not shown) Is press-fitted into both ends of the tube 2 and expanded, and the tube end is fixed to the tube insertion hole of the tank body 4. Then, the fins 1 are arranged between the tubes 2 and the core supports 6 are arranged at both ends of the core 3 including the fins 1 and the tubes 2. Then, the edges of the tank body 4 are overlapped by utilizing their elasticity as shown in FIG. 1, and the end lids 5 are fitted to both ends of the tank body 4. (The other end cover 5 is omitted.) Then, the end cover 5 is fixed to the tank body 4 by the elasticity of the tank body 4, and the engagement portion 6 a of the core support 6 and the cutout portion 5 b of the end cover 5 are connected to each other. Is fitted.

An aluminum alloy in which a brazing material is clad in advance is used for one of the components. Then, with the whole assembled, the brazing filler metal is inserted into a high-temperature furnace and melted. Then, by cooling and solidifying them, the components are brazed and fixed together. At this time, the engaging portion 6a of the core support 6 is fitted to the notch 5b of the end cover 5, and the end cover 5 is fitted to the tank body 4 by the rib 5a. The relative relationship between 5 and the tank body 4 does not change during brazing.

[0009]

[Functions and effects of the invention]

 In the core support mounting structure of the heat exchanger of the present invention, the engaging portion 6a of the core support 6 and the cutout portion 5b of the end cover 5 are aligned, and both are fitted. Since the rib 5a of the end cover 5 is aligned with the opening end of the tank body 4 and is fitted thereon, as a result, the core support 6 is positioned at an appropriate position, and each part is brazed in this state. Fixed. Therefore, since the relative relationship between the core support 6, the end cover 5, and the tank body 4 does not change during brazing, they can be joined with high accuracy, and a core support mounting structure with high reliability and good appearance can be provided. Is possible.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a main part of a core support mounting structure of a heat exchanger of the present invention.

FIG. 2 is a cross-sectional view of a main part of the core support mounting structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fin 2 Tube 3 Core 4 Tank body 5 End lid 5a Rib 5b Notch 6 Core support 6a Engagement

Claims (1)

[Utility model registration claims] 1. A core 3 in which a large number of fins 1 and tubes 2 are arranged in parallel, a pair of cylindrical tank bodies 4 through which both ends of each of the tubes 2 penetrate, and an outer periphery of the tank bodies 4 A short cylindrical rib 5a having a matching inner circumference is formed on the periphery and the rib 5a
A plurality of end covers 5 each having a notch 5b formed at an edge thereof on the side of the core 3; and a hook-shaped or L-shaped engaging portion 6a disposed at both sides in the longitudinal direction of the core 3. Are formed, and the core support 6 whose distal end of the engaging portion 6a is aligned with the notch 5b
The end cover 5 is attached to the open end of the tank body 4, and the engaging portion 6 a of the core support 6 is fitted to the cutout portion 5 b of the end cover 5. The core support mounting structure of the heat exchanger, in which the parts are integrally brazed and fixed.