JPH028693A - Layered type heat exchanger - Google Patents

Abstract

PURPOSE:To make a light weight, a better workability and improve a production characteristic by a method wherein an aluminum material is used, end plates are formed at an upper side and a lower side of several types of plates having brazing material where some recessed portions constituting coolant passage are formed so as to make a coolant passage. CONSTITUTION:Plates 11 and 12 of aluminum material having brazing material are constructed such that recessed portions forming a coolant passage are forming by a pressing work or a chemical processing. Plates 11 and 12 amy constitute a different coolant passage. They are piled up in alternative and have an upper end plate 13 and a lower end plate 13. When brazed within a furnace and the like, molten brazing material flows uniformly over an entire circumference and then a superior brazing without any leakage can be provided. With this arrangement, application of aluminum material enables a shape of coolant passage to be easily worked, and further due to its brazed plate, an integral brazing within the furnace can be performed and thus a productivity can be substantially improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a stacked heat exchanger used in an air conditioning system.

BACKGROUND OF THE INVENTION A conventional stacked heat exchanger will be described below with reference to the drawings.

FIG. 3 shows a conventional laminated heat exchanger, and FIG. 4 shows a cross section of the main part of FIG. Reference numeral 1 denotes an end plate having an entry/exit lever (not shown) on one end thereof. 2 is a box-shaped plate made of stainless steel or steel plate, etc. by press processing, etc.
As shown in FIG. 4, a plurality of them are stacked to form a refrigerant passage 3.

Problems to be Solved by the Invention However, with the above configuration, press working etc. are difficult and high technical skills are required for welding or bonding the plates together.

Furthermore, the weight was increased, and the productivity was extremely poor.

In view of the above problems, the present invention provides a laminated heat exchanger that has good workability and productivity, and is also lightweight.

Means for Solving the Problems In order to solve the above problems, the laminated heat exchanger of the present invention has the following features:
Using aluminum-based materials, two types of brazing plates with recesses forming refrigerant passages are alternately stacked,
It is integrally brazed in a furnace.

Function: With the structure of the present invention, the refrigerant passage of the plate can be easily machined by using aluminum material, which generally has good workability, and the brazing material of the plate can flow evenly and smoothly when brazing in the furnace. It becomes a junction.

EXAMPLE Hereinafter, a stacked heat exchanger according to an example of the present invention will be described with reference to the drawings.

Fig. 1 shows a laminated heat exchanger according to an embodiment of the present invention, and 11 and 12 are plates with brazing material made of aluminum-based material, in which recesses forming refrigerant passages are formed by pressing or chemical treatment. (not shown), and 11 and 12 constitute different refrigerant passages, and are alternately stacked in multiple layers to form end plates 13 above and below.

When brazing in a furnace or the like, the melted brazing material flows uniformly over the entire circumference, allowing for good brazing without leaks.

As described above, according to this embodiment, by using aluminum material, the shape of the refrigerant passage can be easily processed, and the weight can also be reduced. Furthermore, since the plate is brazed, integral brazing in a furnace or the like is possible, and productivity can be greatly improved.

Effects of the Invention As described above, the present invention allows the refrigerant passage to be easily configured by using a plate with aluminum thread brazing material that has good workability.
Also, it becomes lighter. Furthermore, the plates with brazing material that make up the refrigerant passage can be stacked and brazed together in a furnace, etc.
It has good workability, greatly improves productivity, and is also lightweight.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a laminated heat exchanger according to an embodiment of the present invention, Fig. 2 is an enlarged front view of main parts of the present invention, Fig. 3 is a perspective view of a conventional laminated heat exchanger, and Fig. 4 1 is a sectional view of main parts of a conventional laminated heat exchanger. 11.12... Plate with brazing material, 13...
...end plate.

Claims (1)

[Claims] A laminated heat exchanger that uses aluminum-based materials to form multiple types of brazing plates with recesses forming refrigerant passages, and end plates on both upper and lower sides of the plates to form multiple refrigerant passages. vessel.