JPH0720525Y2 - Pipe for refrigerant condenser - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a pipe of a refrigerant condenser used for an air conditioner of an automobile or the like.

(Prior Art) In a refrigerant condenser of an air conditioner, a refrigerant a flows from one pipe 1 through a flat tubular tube 3 to another pipe 2 as shown in FIG. The refrigerant a is forced to dissipate heat by applying pressure to the refrigerant a during this time, thereby turning the refrigerant a into a low-temperature and high-pressure cooling liquid. The heat released at this time is transferred to the tubes 3, transferred to the corrugated fins 11 provided between the tubes 3, and dissipated to the outside by the wind sent to the corrugated fins 11.

The pipes 1 and 2 in FIG. 7 have the same structure, and both are divided by the partition member 4 at appropriate intervals in the longitudinal direction as shown in FIG. 7 and FIG. The refrigerant a sent from 1 is supplied to the upper three tubes 3,
The refrigerant a sent from the tube 3 to the pipe 2 on the right side is partitioned by the partition member 4 in the pipe 2 to prevent downward flow, and flows into the three tubes 3 above the partition member 4, The refrigerant a sent back from the tube 3 to the pipe 1 is further sent to the tubes 3 in the lower three stages,
It flows between the pipes 1 and 2 through a large number of tubes 3.

As shown in FIG. 9, these pipes 1 and 2 are formed by combining two half-split pipes 13a and 13b, and one half-split pipe
A tube insertion hole 14 for inserting the tube 3 into 13a,
A partition material insertion hole 15 for inserting the partition material 4 is formed, and a partition material insertion hole 16 for inserting the partition material 4 is formed in the other half-split pipe 13b.

And the pipes 1, 2 and the tube 3 inserted therein
The partition material 4 is heated to melt the clad material provided on the surface of the partition material 4, and the tube 3 and the partition material 4 are brazed and fixed to the pipes 1 and 2, respectively, and the refrigerant a
Do not leak from their brazed parts.

Incidentally, the conventional partitioning member 4 includes one piece as shown in FIG. 9 and two pieces as shown in FIG.

Reference numeral 21 in FIG. 14 is a detection hole for detecting the leakage of the refrigerant a when the partition in the pipe 1 by the two partition members 4 is insufficient.

(Problems to be solved by the invention) However, as shown in FIG. 10, the conventional one-piece partition member 4 has a clad member 6 on the front surface and / or the back surface of a base material (for example, an aluminum plate) 5. Since the material 7 is pressed by the die 20 as shown in the figure, the cut surface of the partition member 4
The clad material 4 is not attached to 4a.

In addition, the conventional two-piece partition member 4 has a material 7 in which the clad material 6 is provided on the base material 5 as shown in FIG. 12 and is pressed as shown in FIG. Since a single plate member 17 is formed and two plates are combined and connected as shown in FIG. 13 as shown in FIG. 13B, the two partition members 4 also have the clad member 6 on their cut surface 4a. Not attached.

For this reason, when each of the partition members 4 is brazed into the pipes 1 and 2 as shown in FIGS. 11 and 14, the amount of the clad material 6 that melts is small, and the cut surface 4a becomes the pipes 1 and 2. There was a problem that it was difficult to adhere.

Further, since the pipes 1 and 2 are normally brazed in a horizontal direction as shown in FIG. 9, the molten clad material 6 flows downward. Therefore, as shown in FIGS. 11 and 14, the amount of the clad material 6 is large to some extent in the lower part of the partition material 4, but is small in the upper part, and the brazing of the upper part of the partition material 4 becomes insufficient, so that gas leaks There was a risk of doing it.

(Object of the Invention) The object of the present invention is that the partition member 4 is securely brazed to the inner peripheral surface of the pipe 1 or 2 so that the refrigerant does not leak from the brazed portion and is excellent in brazing strength. It is to provide a pipe for a condenser.

(Means for Solving the Problems) As shown in FIG. 7, the refrigerant condenser pipe of the present invention has a large number of tubes 3 inserted between two pipes 1 and 2, and one of the pipes is inserted into the pipe. The refrigerant flows from the pipe to the other pipe through the tube 3, and the refrigerant is blocked by the partition member 4 provided in each of the pipes 1 and 2 in the longitudinal direction of each of the pipes 1 and 2, so that the tube 3 In the pipe for a refrigerant condenser, which is made to meander between the pipes 1 and 2 through, the partition member 4 is formed by processing a material 7 having a clad material 6 on the surface of a base material 5 as shown in FIG. Is
The partition member 4 has a width in the longitudinal direction of the pipes 1 and 2 and contacts the inner surfaces of the pipes 1 and 2 on the outer periphery of the partition portion 8 that partitions the interiors of the pipes 1 and 2 as shown in FIG. A peripheral wall portion 9 is formed, an insert piece 10 is formed on the entire circumference or a part of the peripheral wall portion 9, and the clad material 6 is exposed on the surface of the peripheral wall portion 9 as shown in FIG. .

(Operation) In the refrigerant condenser pipe of the present invention, since the partition member 4 is formed with the peripheral wall portion 9 having a width in the longitudinal direction of each of the pipes 1 and 2 and contacting the inner surfaces of the pipes 1 and 2, Since the contact area between the inner surfaces of the pipes 1 and 2 and the peripheral wall portion 9 is wide and the clad material 6 is exposed on the surface of the peripheral wall portion 9, brazing after the clad material 6 is melted is ensured. ,
There is no risk of refrigerant leaking from the brazed part.

Further, since the insert piece 10 is formed on the entire circumference or a part of the peripheral wall portion 9, the insert piece 10 is formed on the pipe 1, as shown in FIG.
The direction of the partition member 4 in the pipes 1 and 2 can be adjusted by fitting it into the concave groove 23 formed on the inner surface of the pipe 2 or inserting it into the through holes (not shown) formed in the pipes 1 and 2. It is convenient for positioning. In particular, when the partition member 4 is not a perfect circular shape, the partition member 4 can be easily placed in the pipes 1 and 2, and the orientation and the positioning can be easily performed.

(Embodiment) FIG. 1 shows an embodiment of the refrigerant condenser pipe of the present invention.

Reference numerals 13a and 13b shown in the figure are half-divided pipe members forming the pipes 1 and 2, and one of the pipe members 13a has a tube insertion hole 14 into which the tube 3 is inserted.

Reference numeral 4 shown in the figure is a partition member which is mounted between the pipe members 13a and 13b to partition the pipes 1 and 2. As shown in FIG. 2, this partition member 4 is formed by extruding a material 7 having a clad material 6 on the surface of a base material 5 with a jig 20 so as to contact the inner surfaces of the pipes 1 and 2 with the outer periphery of the partition plate portion 8. It is formed in a dish shape having a peripheral wall portion 9, and the peripheral wall portion 9 has a width in the longitudinal direction of the pipes 1 and 2. Further, the insertion piece 10 is formed on the entire circumference or a part of the same peripheral wall portion 9. The clad material 6 is exposed on the surface of the peripheral wall portion 9.

The partition member 4 is arranged at a predetermined position in the longitudinal direction in the pipes 1 and 2 as shown in FIG. In this case, the insertion piece 10 formed on the peripheral wall portion 9 is fitted into the concave groove 22 formed on the inner surface of the pipes 1 and 2 as shown in FIG. 1, and is formed on the pipes 1 and 2. By inserting into a through hole (not shown), the direction and position of the partition member 4 in the pipes 1 and 2 are determined. In this partition material 4, by heating the pipes 1 and 2 and the partition material 4 in this state, the cladding materials 6 of the pipes 1 and 2 and the partition material 4 are melted, and the partition material 4 becomes the pipe 1,
It is brazed to 2.

FIG. 4 shows another embodiment of the refrigerant condenser pipe according to the present invention.

As shown in FIGS. 4 and 5, the peripheral wall 14a of the tube insertion hole 14 formed in the half-divided pipe member 13a is pushed deeply to the inside of the pipes 1 and 2 so as to project to the inside of the pipes 1 and 2. Of the projecting peripheral walls 14a, the partition member 4 is arranged between the adjacent peripheral walls 14a, and the insertion piece 10 formed on the peripheral wall portion 9 is formed on the inner surface of the pipes 1 and 2 as clearly shown in FIG. It is fitted in the recessed groove 23 formed in, and the partition member 4 is brazed to the inner surfaces of the pipes 1 and 2 in this state.

6 (a) to 6 (c) show various embodiments of the partitioning member 4 used in the refrigerant condenser pipe of the present invention.

Of these, the one shown in FIG. 6a is one in which four insert pieces 10 are provided on the bottom edge 9a of the peripheral wall portion 9 of the partition member 4 at equal intervals in the circumferential direction.

As shown in FIG. 6b, a notch 24 is formed in the bottom edge 9a of the peripheral wall portion 9 of the partition member 4, and that portion is folded back to the outside to insert the insert piece 10.
Only one is provided.

In FIG. 6c, a notch 25 is formed in the peripheral wall portion 9 of the partition member 4, and the portion is extruded to provide only one insertion piece 10.

The insert 10 of the partition member 4 of the present invention may have a structure other than that shown.

(Effect of the Invention) The refrigerant condenser pipe of the present invention includes the pipe 1 on the partition member 4,
2, the peripheral wall portion 9 having a width in the longitudinal direction is formed, and the insertion piece 10 is formed on the entire circumference or a part of the peripheral wall portion 9, and the clad material 6 is exposed on the surface of the peripheral wall portion 9. There is an effect like.

． The brazing area of the partition member 4 is widened to ensure brazing, the leakage of the refrigerant is surely prevented, and sufficient brazing strength is obtained.

． Since the insertion piece 10 can be inserted into the concave groove 22 formed on the inner surface of the pipes 1 and 2 or inserted into the through holes formed in the pipes 1 and 2, the pipes 1 and 2 can be inserted.
It is convenient for the direction and positioning of the partition member 4 inside. In particular, when the partition member 4 is not a perfect circular shape, the partition member 4 can be easily placed in the pipes 1 and 2, and the orientation and the positioning can be easily performed. Furthermore, the connection between the partition member 4 and the pipes 1 and 2 is strengthened as much as the insertion piece 10 is fitted into the concave groove 22 or inserted into the through hole.

． The partition member 4 can be easily manufactured by processing the material 7 in which the clad material 6 is formed on the front surface and / or the back surface of the substrate 5 or one of them, and thus can be easily put into practical use.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a refrigerant condenser pipe of the present invention, FIG. 2 is a production explanatory view of the same partitioning material, FIG. 3 is a longitudinal sectional view of a refrigerant condenser pipe of the present invention, and FIG. FIG. 5 is an exploded explanatory view showing another example of the pipe, FIG. 5 is a vertical sectional side view of the refrigerant condenser pipe of FIG. 4, and FIGS. 6a, b, c are explanatory views showing various embodiments of the partitioning material in the present invention. FIG. 7d is a vertical cross-sectional view of the partition member of FIG. 7c, FIG. 7 is an exploded view of a conventional refrigerant condenser, FIG. 8 is an illustration of refrigerant flow in the refrigerant condenser, and FIG. FIG. 10 is an explanatory view of a partitioning material installation showing an example of a conventional refrigerant condenser pipe, FIG. 10 is a manufacturing explanatory view of the partitioning material of FIG. 9,
FIG. 11 is an explanatory view of a longitudinal section of a brazed portion of the partition material, FIGS. 12a and 12b are explanatory views of partition material installation showing another example of a conventional refrigerant condenser pipe, and FIG. 13 is an illustration of the partition material of FIG. Production explanatory drawing,
FIG. 14 is a vertical cross-sectional explanatory view of a brazed portion of the partition material. 1 and 2 are pipes 3 are tubes 4 are partition materials 5 are base materials 6 are clad materials 7 are materials 8 are partition parts 9 are peripheral wall parts 10 are insertion pieces

Claims (1)

[Scope of utility model registration request] 1. A large number of tubes 3 are inserted between two pipes 1, 2, a refrigerant is flowed from one of the pipes to the other pipe through the tube 3, and the same refrigerant is supplied to each of the pipes 1, 2. Each pipe 1, by a partitioning member 4 provided inside 2,
The flow in the longitudinal direction of the tube 2 is blocked midway, and the tube 3
In the pipe for a refrigerant condenser, which is made to meander between the pipes 1 and 2 through the same, the partition member 4 is made by processing a material 7 in which a clad material 6 is provided on a base material 5 and On the outer circumference of the partition 8 that partitions the inside, the pipe 1,
2 is formed so as to have a width in the longitudinal direction and has a peripheral wall portion 9 that contacts the inner surfaces of the pipes 1 and 2, and an insert piece 10 is formed on the entire circumference or a part of the peripheral wall portion 9 to form the peripheral wall. A pipe for a refrigerant condenser, wherein the clad material 6 is exposed on the surface of the portion 9.