JP-7856070-B2 - Cooler manufacturing method

JP7856070B2JP 7856070 B2JP7856070 B2JP 7856070B2JP-7856070-B2

Inventors

池田徹
山下修

Assignees

トヨタ自動車株式会社

Dates

Publication Date: 20260511
Application Date: 20230901

Claims (3)

A method for manufacturing a cooler comprising fixing a first metal plate, a metal material having an uneven structure, and a second metal plate using the protrusions of the metal material, The process includes selectively applying flux to the protrusions of the metal material, The step of selectively applying flux to the protrusions of the metal material is: A step of selectively applying a solvent to the protruding portion of the metal material, The process involves spraying flux onto the uneven surface of the aforementioned metal material, A step of removing flux adhering to the recess of the metal material, Includes , After the removal step, the first metal plate, the metal material, and the second metal plate are fixed together by the protrusions of the metal material, thereby forming a refrigerant flow path for the cooler with the first metal plate, the second metal plate, and the recesses of the metal material. A method for manufacturing a cooler, including the method described above.
A method for manufacturing a cooler comprising fixing a first metal plate, a metal material having an uneven structure, and a second metal plate using the protrusions of the metal material, The process involves spraying powdered flux onto the uneven surface of the metal material, After spraying, the first metal plate, the metal material, and the second metal plate are fixed together by the protrusions of the metal material , thereby forming a refrigerant flow path for the cooler with the first metal plate, the second metal plate, and the recesses of the metal material . A method for manufacturing a cooler, comprising the step of blowing gas into a recess in the metal material after the step of forming the refrigerant flow path to remove the flux adhering to the recess.
The method for manufacturing a cooler according to claim 2, wherein the step of blowing gas into the recesses of the metal material after the step of forming the refrigerant flow path to remove the flux adhering to the recesses includes a step of pressurizing either the first metal plate or the second metal plate with a pressure of 0.1 kPa to 300 kPa in the thickness direction.

Description

This invention relates to a method for manufacturing a cooler. For example, lightweight, highly thermally conductive aluminum roll-bonded panel coolers are used as heat exchangers in automobiles. In the manufacturing method of such coolers, a method of fixing metal plates together is employed. In this fixing process, a chemical called flux, which removes the oxide film formed on the surface of the metal plates, is sometimes used to promote bonding between the metal plates. Patent Document 1 discloses "a method for applying flux to a member to be brazed, characterized in that, after heating the member, a flux mixture is applied to the member, and the liquid component of the mixture is vaporized by the heat of the member brought about by the heating." Japanese Patent Publication No. 2001-259522 Figure 1 is a schematic process diagram showing an example of a method for manufacturing a cooler according to the first aspect of the present invention. Figure 1(A) is a schematic diagram showing an example of a coating step in the method for manufacturing a cooler according to the first aspect of the present invention. Figure 1(B) is a schematic diagram showing an example of a spraying step in the method for manufacturing a cooler according to the first aspect of the present invention. Figure 1(C) is a schematic diagram showing an example of a removal step in the method for manufacturing a cooler according to the first aspect of the present invention. Figure 1(D) is a schematic diagram showing an example of a fixation step in the method for manufacturing a cooler according to the first aspect of the present invention.Figure 2 is a schematic diagram showing an example of a removal step in a method for manufacturing a cooler according to a second aspect of the present invention. The following describes embodiments of the present invention. These descriptions are illustrative and do not limit the scope of the present invention. In this specification, numerical ranges indicated using "~" represent a range that includes the numbers listed before and after "~" as the minimum and maximum values, respectively. In numerical ranges described stepwise within this specification, the upper or lower limit of one numerical range may be replaced with the upper or lower limit of another numerical range described stepwise. Furthermore, in numerical ranges described within this specification, the upper or lower limit of that range may be replaced with the values shown in the examples. In this specification, the term "process" includes not only independent processes but also processes that cannot be clearly distinguished from other processes, provided that their intended purpose is achieved. In this specification, when embodiments are described with reference to the drawings, the configuration of the embodiments is not limited to the configuration shown in the drawings. Furthermore, the sizes of the components in each figure are conceptual, and the relative relationships between the components are not limited thereto. In this specification, each component may contain multiple corresponding substances. When referring to the amount of each component in a composition in this specification, if multiple substances corresponding to that component are present in the composition, unless otherwise specified, it refers to the total amount of those multiple substances present in the composition. In this specification, the term "alloy number" means "alloy number as defined in JIS H 4000:2014." <Method of manufacturing a cooler> (First aspect) A method for manufacturing a cooler according to a first aspect of the present invention involves fixing a first metal plate, a metal material having an uneven structure, and a second metal plate at the protrusions of the metal material, and includes a step of selectively attaching flux to the protrusions of the metal material (hereinafter also referred to as the "attachment step"). By selectively attaching flux to the protrusions, the cooler can be manufactured with flux selectively attached to the protrusions of the metal material, thus providing a cooler that is less likely to contaminate the refrigerant during use. The details of the manufacturing method for the cooler according to the first aspect of the present invention will be described below. - First metal plate and second metal plate - The first and second metal plates are flat metal materials. Examples of materials include aluminum or aluminum alloys. Examples of aluminum or aluminum alloys include pure Al (alloy number: 1000 series) such as 1050, 1100, and 1200; Al-Cu alloys (alloy number: 2000 series) such as 2011, 2014, 2017, and 2024; Al-Mn alloys (alloy number: 3000 series) such as 3003 and 3004; Al-Si alloys (alloy number: 4000 series) such as 4032 and 4545; Al-Mg alloys (alloy number: 5000 series) such as 5005, 5052, 5083, and 5454; Al-Mg-Si alloys (alloy number: 6000 series) such as 6061 and 6063; and Al-Zn alloys (alloy number: 7000 series)