JP-2026075810-A - heat exchanger

JP2026075810AJP 2026075810 AJP2026075810 AJP 2026075810AJP-2026075810-A

Abstract

[Problem] When brazing a heat exchanger comprising a flow channel forming section, which is made up of multiple flow channel forming units stacked in the direction of air flow, a pair of flow channel forming sections spaced apart from each other in the width direction which is perpendicular to the direction of air flow, a plurality of heat exchange tubes connecting the pair of flow channel forming sections, heat transfer fins positioned on both sides of the heat exchange tubes located at both ends of the stacking direction among the heat exchange tubes stacked in the stacking direction of the flow channel forming units, the heat transfer fins located at both ends of the stacking direction among the heat transfer fins, and a pair of side plates that cover the pair of flow channel forming sections from both sides of the stacking direction of the flow channel forming unit, a problem arose when brazing a heat exchanger comprising a stainless steel jig and an aluminum component constituting the heat exchanger, where the jig comes into contact, causing damage to the heat exchanger when the jig is removed. [Solution] The end of the side plate is shaped to fill the step formed on the end face of the flow path forming unit. [Selection Diagram] Figure 7

Inventors

宮内郁明
堀田修平

Assignees

サンデン株式会社

Dates

Publication Date: 20260511
Application Date: 20241023

Claims (3)

A flow channel forming section is formed by stacking multiple flow channel forming units that extend in the direction of air flow, and a pair of flow channel forming sections are provided spaced apart from each other in the width direction, which is perpendicular to the direction of air flow, A plurality of heat exchange tubes connecting the pair of flow path forming sections, Between adjacent heat exchange tubes, and among the multiple heat exchange tubes stacked in the stacking direction of the flow path forming unit, heat transfer fins are arranged on the outside of each of the heat exchange tubes located at both ends in the stacking direction, The heat transfer fins include the heat transfer fins located at both ends in the stacking direction, and a pair of side plates that cover the pair of flow path forming portions from both sides of the flow path forming unit in the stacking direction, A heat exchanger equipped with, A heat exchanger characterized in that the ends of the side plates have auxiliary portions that fill the steps formed on both sides in the stacking direction of the pair of flow path forming portions.
The aforementioned channel forming unit is composed of multiple types of channel forming unit members, The heat exchanger according to claim 1, characterized in that the step is formed by assembling the multiple types of flow path forming unit members.
The heat exchanger according to claim 1 or 2, characterized in that the auxiliary portion is formed by bending the side plate.

Description

This invention relates to a heat exchanger. Heat exchangers, such as those used in car heaters, were manufactured by first fabricating the main aluminum components—heat exchange tubes, fins, header tanks, inlet pipes, and outlet pipes—from aluminum brazing sheets. These components were then assembled into a heat exchanger, and the assembly was placed in a stainless steel jig. Finally, the contact points of the components were brazed together using methods such as vacuum brazing, inert gas atmosphere brazing, or furnace brazing. However, this conventional method had the problem that the brazing material surface of the aluminum brazing sheet components could come into contact with the stainless steel jig, resulting in the components and the jig being brazed together. Therefore, a method was employed in which a carbon brazing prevention member was interposed at the contact point between the aluminum component and the stainless steel jig (see, for example, Patent Document 1). Japanese Unexamined Patent Publication No. 63-2556 This is an overall perspective view of a heat exchanger according to an embodiment of the present invention.This is an exploded perspective view of the channel formation section.This is an exploded perspective view of the flow path forming unit as seen from the first component side.This is an exploded perspective view of the flow path forming unit as seen from the second component side.This is a side view of the uppermost channel forming unit as seen from the first member side.Figure 5 is a top view of the flow channel forming unit.This is the end of the side plate as seen from the right side.Figure 7 is a top view of the end of the side plate.This is the left side of the edge of the side plate, as seen from the front.This is the end of the side plate as seen from above (Comparative Example 2). Embodiments of the present invention will be described below with reference to the drawings. Each drawing shows one embodiment of the present invention and is not intended to limit the invention. In the following description, the same reference numerals in different drawings indicate parts with the same function, and redundant explanations in each drawing will be omitted as appropriate. In addition, the dimensional relationships of each element in the drawings are for the purpose of facilitating understanding and are not intended to limit the actual dimensional ratios. Furthermore, in this specification, stainless steel jigs are not limited to those having a clamping function to hold each component in an assembled state, but also include those that support the assembly by placing it on top of other objects, etc., and have a function to maintain the assembled form. Also, the term "aluminum" includes aluminum alloys as well as pure aluminum. Figures 1 to 9 show a first embodiment of the present invention. In this embodiment, directions are indicated based on the front-to-back direction, left-to-right direction (width direction), and up-to-down direction (vertical direction), as shown by the solid arrows in Figure 1. The heat exchanger 1 of the present invention is used, for example, in a vehicle air conditioning system that is installed for each of several seats in the passenger compartment of a vehicle and blows air as a second fluid with adjusted temperature and humidity toward the occupant seated in the seat. This vehicle air conditioning system includes an air conditioning unit in which components such as a compressor, heat exchanger 1, and expansion valve are integrally formed. The air conditioning unit is located, for example, under the seat, in the ceiling of the passenger compartment, in the door trim, or under the armrest in the center of the width direction of the passenger compartment. Air supplied from the air conditioning unit into the passenger compartment is blown out from outlets provided in the seat backs and cushions, under the seats, in the ceiling of the passenger compartment, or in the B-pillars of the vehicle. The heat exchanger 1 is used in an air conditioning unit as a condenser for condensing the refrigerant, which is the first fluid discharged from the compressor, and as an evaporator for evaporating the refrigerant after it has been depressurized by the expansion valve following its discharge from the condenser. As shown in Figure 1, the heat exchanger 1 comprises a pair of flow path forming sections 10 spaced apart from each other in the width direction, which is perpendicular to the front-to-back direction (indicated by the white arrows in Figure 1), a plurality of heat exchange tubes 20 connecting the pair of flow path forming sections 10, heat transfer fins 30 positioned between the heat exchange tubes 20 and on the outside of the heat exchange tubes 20 located at both ends of the stacking direction of the flow path forming unit 11, and a pair of side plates 40 covering the heat transfer fins 30 located at both ends of the stacking direction and the pair of flow path for