JPH03282191A - Structure of tank part for lamination type heat exchanger - Google Patents

Abstract

PURPOSE:To secure a fluid passage having a sufficient size, minimize the resistance of the passage and permit the provision of inlet and outlet pipes simply by a method wherein the tank unit of a lamination type heat exchanger is constituted of a pair of tank plates, constituting an inlet tank and the inlet pipe, and the other pair of tank plates, constituting an outlet tank and the outlet pipe, which are laminated in the ventilating direction of the heat exchanger. CONSTITUTION:An inlet tank so and an outlet tank 32 are constituted of two sheets of tank plates 34, 36 connected so as to be opposed to each other. The tank plates 34, 36 are connected so as to be opposed to each other whereby the inlet tank 30 and the outlet tank 32 are constituted while an inlet pipe (or an outlet pipe) 50 and an outlet pipe (or inlet pipe) 52 are constituted of recessed units 38, 40, positioned above the inlet tank 30 and the outlet tank 32 and opposed to each other, while the fluid passages 54, 56 of heat exchanging mediums are defined in the inlet and outlet pipes.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a stacked heat exchanger used in a vehicle air conditioner. Regarding the structure of

(Prior Art) Conventionally, the tank structure of this type of heat exchanger is such that a bulge having a communication port is provided at one end of a tube element, and the bulge is joined to form a tank. A device that does this is well known (see, for example, Japanese Patent Application Laid-Open No. 153397/1983).

(Problem to be Solved by the Invention) However, in the above-mentioned prior art, a surface is required to join the bulging portion, and the size of the fluid passage in the tank portion is determined by the size of the communication port. there were. That is,
The size of the fluid passage within the tank portion is smaller than the cross-sectional area of the tank portion. For this reason, in order to ensure a fluid passage with a necessary and sufficient size, it was necessary to make the entire tank part (the bulging part of each tube element) thick (and to make the communication port as wide as possible. However, Since the heat exchanger is required to be miniaturized, there is a problem in increasing the size of the tank.

Further, the surface to which the bulging portion is joined acts as a passage resistance of the fluid passage in the tank portion, making it impossible to avoid uneven flow of the heat exchange medium.

Furthermore, in order to provide an inlet/outlet pipe for the heat exchange medium in the above-mentioned tank portion, it is necessary to provide the inlet/outlet pipe separately or to provide a tube element with a new inlet/outlet pipe. This causes problems such as an increase in the number of parts and an increase in the number of man-hours required for installation.

Therefore, in view of the above-mentioned problems, the present invention provides a small tank section with a fluid passage having a necessary and sufficient size, minimizes the passage resistance of the fluid passage, and easily attaches the tank section to the tank section. It is an object of the present invention to provide a structure for a tank part of a laminated heat exchanger that can be equipped with an inlet/outlet pipe.

(Means for Solving the Problems) In order to achieve the above object, the structure of the tank part of the laminated heat exchanger according to the present invention includes a structure in which a large number of tube elements are stacked with corrugated fins interposed therebetween, and the tube elements are In the stacked heat exchanger, the tank section includes a pair of tank plates that constitute an inlet tank and an inlet pipe, and another pair of tank plates that constitute an outlet tank and an outlet pipe. and are laminated in the ventilation direction of the heat exchanger.

(Function) Therefore, in a tank section configured by laminating tank plates, there is no passage resistance due to the joint surface of the conventional bulging section, and the fluid i
J circuit can be ensured, and the inlet pipe and outlet pipe can be easily formed, thereby making it possible to solve the above problems.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

Figure 1 shows a stacked heat exchanger (hereinafter referred to as a "heat exchanger").

) is shown, and the heat exchanger has tube elements 1 and corrugated fins 2 alternately stacked in multiple stages, and a tank part 4 for supplying a heat exchange medium is arranged in the upper part of the diagram. These are then assembled by brazing them together in a furnace.

The tube element 1 is constructed by joining two molded plates 6, which are shown in detail in FIG. 2, facing each other.

The molded plate 6 is approximately rectangular, and has, for example, a generally semi-cylindrical recess 8° 10 projecting from one end in the longitudinal direction, and a recess 8, 10 extending from between the recesses 8 and 10 toward the other end. A protrusion 12 is extended, and a substantially U-shaped groove 14 is formed at the periphery of the protrusion 12. Further, an abutting portion 15 bent outward at a right angle is provided at the other end.

A tube element 1 is constructed by joining these molded plates 6.6 facing each other, and one end of the tube element 1 has recesses 8 facing each other,
10 to the inlet (or outlet) of the heat exchange medium 16.
An outlet section (or inlet section) 18 is formed (see FIG. 4), and inside, a U-shaped passage 2 is formed from each groove section 14.
o is constructed, and the inlet part 6 and the outlet part 18 form a U-shaped passage 2.
It is designed to communicate via 0. Each tube element 1 is stacked with both adjacent abutting portions 15 in contact with each other, so that the distance between each tube element 1 into which the fin 2 is inserted is a predetermined distance. It is now set to .

The tank section 4 includes an inlet tank (or outlet tank) 30 and an outlet tank (or inlet tank) 32.

Inlet tank 30. The outlet tank 32 is each constructed by joining two tank plates 34, 36 facing each other, as shown in detail in FIG.

The tank plates 34 and 36 are approximately semi-cylindrical with a hollow interior, and have a generally semi-cylindrical recess 3 in a part of the upper edge in the figure.
B, 40 is formed protrudingly.

Further, a predetermined number of substantially semicircular notches 42 and 44 are formed at a predetermined interval on the lower edge in the drawing.

By joining the tank plates 34 and 36 facing each other, the inlet tank 30. An outlet tank 32 is configured and the inlet tank 30. At the upper side of the outlet tank 32 in the figure, an inlet pipe (or outlet pipe) 5o extends from mutually opposing recesses 38 and 40.

An outlet pipe (or inlet pipe) 52 is constructed, inside which a fluid passage 54,56 for a heat exchange medium is defined. Further, in the lower part of the inlet tank 30 and the outlet tank 32 as shown in the figure, the inlet part 16 of the tube element 1 is connected from the opposing notch parts 42 and 44 to the inlet part 16. A predetermined number of insertion holes 60 for inserting the outlet portion 18 are formed (see FIGS. 1, 3, and 4).

To assemble the tank section 4 in the above configuration to the heat exchanger,
First, the inlet tank 30. One tank plate 36, 36 constituting the outlet tank 32 is joined back to back. Next, each notch 44 of this tank plate 36.36
at the inlet section 16 of each tube element 1. Apply the outlet part 18. After that, the inlet tank 30. Outlet tank 3
2, the other tank plate 34, 34 constituting the tube element 1, and its respective notch 42,
Tank brake while applying to outlet part 18) 36.36
be joined to. Thereby, the inlet section 16 of each tube element 1. The outlet section 18 is connected to the inlet tank 30. is retained in each insertion hole 60 of the outlet tank 32, and is held in each insertion hole 60 of the inlet tank 30. An outlet tank 32 is configured. The fluid passage 54 of the inlet tank 30 is communicated with the inlet part 16 of each tube element 1, and the fluid passage 56 of the outlet tank 32 is communicated with the outlet part 18 of each tube element 1. (See Figure 4).

In the heat exchanger having such a configuration, the heat exchange medium supplied from the inlet pipe 50 into the fluid passage 54 of the inlet tank 30 is divided into the 0-1 path 20 of each tube element 1, and this U
It exchanges heat with outside air while moving within the cross-shaped passage 20, collects in the fluid passage 56 of the outlet tank 32, and is discharged from the outlet pipe 52.

In this heat exchanger, the tank portion 4 is constructed by stacking the tank plates 34 and 36, which are hollow inside, as described above.
Because of this structure, a fluid passage having the same size as the cross-sectional area of the tank portion can be obtained, and the passage resistance is small. Also, a pair of tank plates 34.3
6 to join the inlet tank 30. Since the outlet tank 32 is configured, the inlet tank 30. The outlet tank 32 has a structure in which an inlet pipe 50 and an outlet pipe 52 are easily provided.

(Effects of the Invention) As described above, according to the present invention, since the tank portion is formed by stacking tank plates in the ventilation direction of the heat exchanger, a fluid having the same size as the cross-sectional area of the tank portion can be Not only can a passage be obtained, but passage resistance is small, and uneven flow of the heat exchange medium can be suppressed.

Further, since an inlet/outlet pipe can be easily provided in the tank portion, the number of parts and the number of installation steps can be reduced.

[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 exploded perspective view of a tube element, Fig. 3 is an exploded perspective view of a tank section, and Fig. 4 is an enlarged cross-section of main parts. It is a diagram. 1...Tube element, 2...Fin, 4...
-Tank part, 30... Inlet tank, 32... Outlet tank, 34.36... Tank plate, 50... Inlet pipe, 52... Outlet pipe.

Claims (1)

[Claims] In a stacked heat exchanger in which a large number of tube elements are stacked with corrugated fins interposed therebetween and the tube elements are connected to a tank section, the tank section includes a pair of tanks constituting an inlet tank and an inlet pipe. A structure for a tank portion of a stacked heat exchanger, characterized in that the plate and another pair of tank plates constituting an outlet tank and an outlet pipe are stacked in the ventilation direction of the heat exchanger.