JP-2026075808-A - heat exchanger

JP2026075808AJP 2026075808 AJP2026075808 AJP 2026075808AJP-2026075808-A

Abstract

[Problem] In a heat exchanger having a header tank with a partition section that divides the interior, the area around the engagement section where the partition plate and the tank fit together is susceptible to corrosion because the brazing material fills the clearance for fitting. [Solution] In a heat exchanger having a header tank equipped with a partition that divides the interior and a cap that closes the longitudinal end, the fitting portion of the partition and the engaging portion between the header tank are provided at the joint with at least one cap. [Selection Diagram] Figure 7

Inventors

藤原章博

Assignees

サンデン株式会社

Dates

Publication Date: 20260511
Application Date: 20241023

Claims (4)

Multiple tubes through which a heat transfer medium flows, A heat exchange core section composed of the aforementioned plurality of tubes, A pair of header tanks are provided at both ends of the tube in the longitudinal direction and extend in the direction of stacking the tubes, A partition provided inside the header tank, A cap that closes the longitudinal end of the header tank, In a heat exchanger equipped with, The plurality of tubes are arranged in a manner in which a group of tubes stacked in the stacking direction of the tubes is arranged in multiple rows in a ventilation direction perpendicular to the stacking direction of the tubes. The header tank has a hollow cylindrical structure, The partition is positioned between groups of tubes so as to divide the hollow portion of the header tank into multiple regions extending in the stacking direction. The header tank is a heat exchanger characterized in that a fitted portion that engages with the fitting portion of the partition portion is provided on at least one of the caps.
The header tank is composed of multiple members, The cap closes the opening at the longitudinal end of the header tank, which is made up of the plurality of members, and has a flange that covers the outer circumferential surface of the end. The heat exchanger according to claim 1, characterized in that the flange portion is joined to the fitting portion of the partition portion.
The cap has an opening for connecting the inlet and outlet pipes for the heat transfer medium. A heat exchanger as described in feature 2.
The heat exchanger according to any one of claims 1 to 3, characterized in that the fitting portion is notched or slit-shaped.

Description

This invention relates to a heat exchanger. For example, a heat exchanger used in vehicle air conditioners, for instance, is constructed from multiple tubes through which a heat transfer medium flows, arranged in a stack with heat transfer fins, and a header tank connected to the ends of these tubes and extending in the stacking direction. The header tank is equipped with a partition plate that divides its interior. This partition plate restricts the flow of the heat transfer medium within the header tank, ensuring uniform circulation of the heat transfer medium within each tube. The partition plate has an upwardly protruding fitting portion, and the tank constituting the header tank has a slit hole into which the fitting portion of the partition plate fits (see, for example, Patent Document 1). This configuration facilitates the positioning of the partition plates, and allows for visual confirmation of whether the brazing of the partition plates has been properly performed by inspecting the engagement portion between the slit holes and the partition plates. Therefore, defects in the brazing of the partition plates can be effectively prevented. Japanese Patent Publication No. 2004-205114 This is a front view showing the external appearance of a heat exchanger according to an embodiment of the present invention.This is an exploded perspective view of the header tank, showing the bottom surface where the tubes are connected.This is a perspective view of a header tank with the cap removed, showing the bottom surface where the tubes are connected.This is a cross-sectional perspective view taken along line A-A in Figure 3.This is a bottom view of the header tank, showing the side to which the tubes are connected.This is a side view of the right end of the partition section.This is a top view of the right end of the tank, showing the side opposite to the side to which the header is connected.This is a perspective view of the inside of the first cap.This is a perspective view of the rightmost part of the header tank.Figure 9 is a cross-sectional perspective view of the header tank, cut vertically along the partition.This is an enlarged cross-sectional side view of section C in Figure 10. The embodiments of the present invention will be described below with reference to the drawings. Each drawing illustrates one embodiment of the present invention and is not intended to limit it. In the following description, the same reference numerals in different figures indicate parts with the same function, and redundant explanations in each figure will be omitted as appropriate. Furthermore, the dimensional relationships of each element in the drawings are for ease of understanding and are not intended to restrict actual dimensional ratios. Furthermore, in this embodiment, directions are indicated based on the vertical, horizontal (width), and front-to-back directions, as shown by the solid arrows in each drawing. The front-to-back direction is the direction in which the fluid (e.g., air) passes (ventilation direction), and the fluid passes from the rear to the front in this direction. In Figure 1, the front of the page is the rear, and the fluid passes from the front to the back of the page. Figure 1 shows an example of the schematic configuration of the heat exchanger 1 according to this embodiment. As shown in Figure 1, the heat exchanger 1 comprises a first header tank 11, a second header tank 12, and a heat exchange core 10 formed between the first header tank 11 and the second header tank 12. The heat exchange core 10 comprises a plurality of tubes 100, fins (not shown) provided between adjacent tubes 100, and a pair of side plates 101 provided at both ends in the stacking direction (width direction) of the plurality of tubes 100. In the heat exchanger 1, heat exchange occurs between a heat transfer medium (including a refrigerant) flowing vertically through the tubes 100 of the heat exchange core 10 via the first header tank 11 and the second header tank 12, and a fluid (e.g., air) passing through the heat exchange core 10 from rear to front along the front-to-back direction in the figure. The first header tank 11 and the second header tank 12 are hollow, cylindrical structural members that extend in the width direction shown in the figure. Along this extending direction, multiple tubes 100 are stacked between the first header tank 11 and the second header tank 12 at predetermined intervals. More specifically, the multiple tubes 100 are arranged in a two-dimensional configuration, with groups of tubes 100 arranged in the width direction in the illustration, and multiple rows arranged in the front-to-back direction (the airflow direction perpendicular to the stacking direction of the multiple tubes 100). Both ends of each tube 100 are connected to the first header tank 11 and the second header tank 12, respectively. A first cap 40 is provided at one end of the longitudinal direction of the first header tank 11 and the s