JPS6038121Y2 - stacked evaporator - Google Patents

Description

[Detailed Description of the Invention] This invention relates in particular to an improvement in the mounting structure of an inlet vibrator and an outlet vibrator in a laminated type evaporator used in an automobile cooling device or the like.

In general, in a stacked evaporator, the tanks on both sides and the passage connecting them are constructed by joining two molded plates, and the two joined molded plates and corrugated fins are alternately stacked in multiple stages. Adjacent tanks are communicated to form a tank group, and refrigerant entering from an inlet vibe connected to a tank of one tank group is guided from one tank group to the other tank group through the passage, It is configured to exit from an outlet vibe connected to a tank of this other tank group.

However, in the conventional stacked evaporator, the inlet and outlet vibes are connected to the outermost tank in parallel with the stacking direction, protruding outward, and are bent inward from the opposite end. The protruding part of the exit vibrator becomes a dead space, making it difficult to install it in a narrow space.

In addition, since the inlet and outlet vibrators are connected at right angles to the thin walled part of the tank, it is impossible to integrally braze them, so they are connected by argon arc welding etc. after forming plates, fins, etc. are brazed in a furnace. The disadvantage was that manufacturing costs were high.

Therefore, in this invention, in order to solve the above-mentioned problems and drawbacks, the inlet and outlet vibrators are joined to the tank by sandwiching them between molded plates, thereby eliminating dead space and making it possible to integrally braze them. The purpose of this invention is to provide a stacked evaporator.

Examples of this invention will be described below with reference to the drawings.

1 to 3, one embodiment of this invention is shown, and a molded plate 1 has tank parts la, la on both sides and a passage part 1b connecting these tank parts 1a, la formed by press working or the like. The two molded plates 1 are joined with their concave portions facing each other, and the tanks 2 on both sides are
, 2 and a passage 3 connecting these tanks 2, 2.

The two joined molded plates 1, 1 and the corrugated fins 4 are alternately stacked in multiple stages, and end plates 5, 5 are arranged on both sides thereof.

Adjacent tanks 2 have holes 6 formed in the molded plate 1.
tank groups 7 and 7 on the left and right, respectively.
is configured.

The two molded plates 1, 1 at the uppermost end have a slightly different configuration from the other molded plates 1, and the tank parts 1 on both sides
A semicircular joint 8 is provided at the longitudinal ends of a and la, respectively.
, 8 are formed, and a cylindrical inlet vibrator 9 and an outlet vibrator 10 are fixed to the joint portion 8.8 in a sandwiched manner and connected to the tongue 5 ri 2.

Therefore, since the inlet and outlet vibes 9 and 10 protrude in the longitudinal direction of the tank 2, which is the relatively thin side of the stacked evaporator, the relatively thick side does not protrude in the stacking direction.

To describe an example of a method for manufacturing a stacked evaporator configured as described above, first, the forming plate 1.1, the fin 4
are laminated alternately, and end plates 5, 5 are arranged on both sides,
Fix it with a jig from both sides, and mold plates 1, 1 at the upper end.
The process is completed by inserting the inlet vibrator 9 and the outlet vibrator 10 into the joint parts 8, 8, and brazing them in a furnace.

In other words, the brazing material coated or clad on both sides of the forming plate 1 is formed into a forming plate in a furnace)1.1
and melts between the inlet and outlet vibes 9, 10, thereby fixing the inlet and outlet vibes 9, 10 to the joints 8, 8 of the molded plates 1, 1.

4 and 5, another embodiment of this invention is shown, and in the embodiment described above, the cylindrical inlet and outlet vibrators 9, 10 were constructed so as to be sandwiched between the molded plates 1, 1. In this embodiment, polygonal fixing portions 11 are formed on the inlet and outlet vibrators 9, 10, mainly to improve brazing performance with the molded plate 1.1.

That is, for example, a hexagonal fixing portion 11 is formed on the tank side of the inlet and outlet vibes 9, 10, and hexagonal joint portions 8', 8 are formed on the molded plates 1, 1.
' are formed, and the fixing parts 11 of the inlet and outlet vibes 9.10 are fixedly sandwiched between the joint parts 8', 8'.

Therefore, this embodiment also has the same effect as the previous embodiment, and the clearance between the molding plates 1, 1 and the inlet and outlet vibes 9, 10 can be made more uniform compared to the above embodiment. , the brazing filler metal flows more easily, ensuring a secure joint, and the inlet and outlet vibes 9, 10
This has the effect of making setting easier during insertion.

In the above two embodiments, the inlet and outlet vibrators 9, 10 were connected to the tanks 2, 2 at the upper end of the tank group 7.7, but they were connected to the tanks 2, 2 in the middle of the tank groups 7, 7. You may.

As described above, according to this invention, a connecting part is formed at the longitudinal end of the tank part, and the inlet and outlet vibes communicating with the tank are fixed in a manner sandwiched between the connecting parts.
The inlet vibe and outlet vibe are in the longitudinal direction of the tank, i.e.
This type of evaporator protrudes only in the direction of air flow, and in this type of evaporator that is housed in a case, there is sufficient space in the direction of air flow, and the evaporator protrudes between it and the case where there is not enough space. Since there are no parts, the entire cleaning unit including the case can be downsized and can be installed in narrow spaces such as in automobiles.

Furthermore, although a sealing member is interposed between the case and the case, since there is no part that protrudes in any direction other than the air flow direction as described above, it is possible to easily interpose this sealing member.

Furthermore, since the inlet vibrator and the outlet vibrator are integrally brazed to the connecting portion, they can be manufactured together with the molded plate, fins, etc. in a single brazing process, contributing to cost reduction.

[Brief explanation of drawings]

1 to 3 show an embodiment of this invention, FIG. 1 is a front view of a stacked evaporator, FIG. 2 is a perspective view showing the main parts,
FIG. 3 is an exploded perspective view showing the molding plate and the inlet vibrator, and FIGS. 4 and 5 show other embodiments of this invention.
FIG. 4 is a front view of the main part, and FIG. 5 is a perspective view showing the entrance or exit vibe. 1... Molding plate, 2... Tank,
3... Passage, 8, 8'... Joint, 9
...Entrance vibe, 10...Exit vibe, 11...Fixed part.

Claims (1)

[Claims for Utility Model Registration] 1. In a stacked evaporator in which molded plates 1, 1 forming tanks 2 on both sides and a passage 3 connecting the tanks 2, and full gate-shaped fins 3 are alternately stacked in multiple stages. , a tank portion 1a of the molded plates 1, 1 constituting the tank 2,
Connecting parts 8, 8 are formed at the longitudinal ends of the la, and one end of an inlet vibrator 9 and an outlet vibrator 10 communicating with the tank 2 are connected to the forming plate 1 and the fins by sandwiching them between the connecting parts 8. 3, and the other ends of the inlet vibrator 9 and the outlet vibrator 10 protrude in the direction of air flow. 2. The artificial vibrator 9 and the exit vibrator 10 have a polygonal fixing part 11, and the fixing part 11 is connected to the connecting part 8 of the tank parts 1a and 1a of the molded plates 1 and 1, which are also formed in a polygonal shape.
The stacked evaporator according to claim 1, which is sandwiched between ' and 8'.