JPH0522764Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a refrigerant condenser pipe used in air conditioners of automobiles and the like.

(Prior art) The refrigerant condenser of an air conditioner is as shown in Figure 4.
The refrigerant flowing from one pipe A through the flat tube B to the other pipe C is forced to radiate heat by applying pressure, thereby turning the refrigerant into a low-temperature, high-pressure cooling liquid. The heat generated at this time is transferred to the tube B, transferred to the corrugated fin D connected to the tube B, and dissipated by the air sent to the corrugated fin D.

The refrigerant condenser pipes A and C have the same structure, and are partitioned in the longitudinal direction by a partition plate E as shown in FIGS. 4 and 5. The refrigerant sent out from the pipe A on the left side of Fig. 5 is supplied to the upper three stages of tubes B, and the refrigerant sent out from those tubes B to the other pipe C (on the right side) is supplied to the three stages below. The refrigerant sent to tube B and further sent back to pipe A is further sent to three stages of tubes B below, and is made to flow in a meandering manner within a large number of tubes B.

As shown in FIG. 4, a cap F is attached to one longitudinal end of the pipes A and C, and a joint G is attached to the other end.

As shown in FIG. 6, a conventional pipe A has a tube insertion hole J into which the tube B is inserted into a single round tube H, and a partition plate insertion hole K into which the partition plate E is inserted. However, since the tube insertion hole J and the partition plate insertion hole K are formed in the round tube H, the machining thereof is extremely troublesome. Further, when the tube insertion hole J was formed by press working or the like, there was a problem in that the circumference of the insertion hole J was also depressed, deforming the round tube H, and making it difficult to insert the tube B.

Therefore, the flat pipe A is divided into two in the axial direction as shown in Fig. 7a, and divided into a half-split main body L and a half-split cover M, and one of them has a tube insertion hole J. However, a partition plate insertion hole K is formed on the other side, and after inserting the partition plate E into the partition plate insertion hole K, insert both end surfaces P of the opening of the lid M into the inner surface of the main body L in the direction indicated by the arrow a in the figure. It has been considered that the main body L and the lid M are placed facing each other as shown in FIG.

(The problem that the idea aims to solve) Conventional pipes had the following problems.

Since the half-split main body L and lid M are thin and elongated, they tend to be twisted or distorted. Furthermore, since the two are simply faced and butted against each other, positioning in the width direction is difficult. For the above reasons, when the main body L and the lid M are butted together, misalignment tends to occur as shown in FIG. 8b, and the axes are misaligned, making it difficult to center them. If such a shift occurs, it is difficult to cover the cap Q, and a gap S is created between the partition plate E, the main body L, and the lid M, as shown in FIG. 9, and the refrigerant leaks through the gap S. Also,
There was a problem in that the direction of the tube insertion hole J of the lid M was misaligned, making it difficult to insert the tube B.

Furthermore, since the main body L is flat, there is another problem in that when the above-mentioned positional deviation occurs, the internal volume of the pipe changes and the pressure of the refrigerant changes.

(Purpose of the invention) The purpose of the invention is to provide a pipe for a refrigerant condenser in which the cap is easy to attach, the partition is completely partitioned by a partition plate, there is no leakage of refrigerant, the tube is easy to insert, and the internal volume is constant. There is a particular thing.

(Means for Solving the Problems) The refrigerant refrigerant condenser pipe of the present invention is a refrigerant condenser pipe in which a tube insertion hole is formed in the peripheral wall and a refrigerant partition plate is provided inside.
The pipe is composed of a halved main body 1 and a halved lid 2, one of which is formed with a tube insertion hole J and the other with a partition plate insertion hole K. The lid 2 is opposed to the receiving flange 3 formed at the opening end of the main body 1, with the opening end surface 4 of the lid 2 pressed against the receiving flange 3.
A side edge 6 provided on the outside of the lid body 3 is caulked to the outside of the lid body 3, and then brazed.

(Function) As shown in FIG. 1a, the refrigerant condenser pipe of the present invention has a flange 3 formed on the half-shaped main body 1, so the opening end surface 4 of the lid body 2 is pressed against the flange 3. The main body 1 and the lid 2 can be positioned simply by touching them, and no misalignment occurs.

In addition, in order to use the pipe of the present invention, please refer to Figure 1 c.
Attach a cap 1 to one end of the pipe in the longitudinal direction, as in
0a, and further insert the tube B into the tube insertion hole J formed in the lid 2 or the main body 1, and use it in the same way as a conventional refrigerant condenser pipe.

(Embodiment) FIGS. 1 and 2 show an embodiment of the refrigerant condenser pipe of the present invention.

1 shown in these figures is a half-split main body, and 2
is a half-shaped lid that is combined with the main body 1. The main body 1 and the lid 2 shown in Fig. 1 each have a semicircular cross-sectional shape, and when they are combined, they form a perfect cylinder, but their shapes are other than that. For example, it may be rectangular.

In the illustrated embodiment, the partition plate insertion hole K into which the partition plate 11 is inserted into the main body 1, and the tube insertion hole J into which the tube B is inserted into the lid body 2 are formed by press working or the like. Now, reversely insert the tube insertion hole J into the main body 1, and insert the tube insertion hole J into the lid body 2.
A partition plate insertion hole K may be formed in.

Reference numeral 3 in FIGS. 1 and 2 is a receiving flange formed on the main body 1, against which the opening end surface 4 of the lid body 2 is pressed. A side edge 6 is formed on the outer side in the width direction of the receiving flange 3. Also, the pressing surface 1 of the tsuba 3
5 and the opening end surface 4 of the lid body 2 are preferably as smooth as possible to ensure good adhesion between the two.

In the present invention, after the main body 1 and the lid 2 are opposed to each other, both longitudinal ends of the side edges 6 of the main body 1 are caulked to the outside of the lid 2, but in the present invention, before this,
As shown in FIG. 1a, a partition plate 11 is fitted into a partition plate insertion hole K formed in the main body 1.

When crimping the side edge 6 of the main body 1 to the outside of the lid 2, the main body 1 and the lid 2 should be crimped to prevent deformation of the main body 1 and the lid 2, which face each other as shown in Fig. 1b. 2, and in this inserted state the side edges 6 are caulked as shown in FIG. 1c. By this caulking, the opening end surface 4 of the lid body 2 and the pressing surface 15 of the receiving flange 3 are held in close contact with each other as shown in FIG.

Note that the inner surface support 5 is usually incorporated into a caulking machine.

Reference numeral 12a shown in FIG. 1c is a cap 12b that is placed over the longitudinal end of the pipe crimped as described above.

In the present invention, after covering the cap 12b, the main body 1, the lid 2, the partition plate 11, and the cap 12 are brazed. In this case, the main body 1 to be brazed,
A brazing material is applied in advance to the connecting portions of the lid body 2, the partition plate 11, and the cap 12, and the brazing material is melted and brazed by heating.

If necessary, for the pipe of the present invention, a tube guide 13 is provided inside the tube insertion hole J as shown in Fig. 3, so that the tube B inserted into the insertion hole J is guided by the guide 13 and inserted. It may be possible to make it easier. As this tube guide 13, for example, a flat pipe is used.

(Effects of the invention) The refrigerant condenser pipe of the invention has the following effects.

Since the main body 1 has a receiving tsuba 3, its pressing surface 15
The main body 1 and the lid 2 are positioned simply by pressing the open end surface 4 of the lid 2 against the lid 2, thereby facilitating the assembly work.

Since the main body 1 and the lid 2 do not shift in position, the internal volume of the assembled pipe remains constant, allowing the designed amount of refrigerant to flow.

Since the main body 1 and the lid 2 do not shift in position, the inner peripheral surface of the assembled tube B and the partition plate 11
I have never had a case where there was no gap between the two and the refrigerant leaked out.

Not only is there no misalignment between the main body 1 and the lid 2, but also the lid 2 has never been assembled to the main body 1 in a twisted state, so the two pipes of the present invention were separated by a predetermined distance and placed opposite each other. At this time, the tube insertion holes J of both pipes are accurately opposed to each other, and the tube B can be easily inserted into the same insertion hole J.

Since the main body 1 and the lid body 2 do not shift in position, it is easy to put the cap on.

[Brief explanation of the drawing]

Figures 1 a to d are assembly explanatory diagrams showing an example of the refrigerant condenser pipe of the present invention, Figure 2 is a sectional view taken along line A-A in Figure 1 c, and Figure 3 is an assembly diagram showing a different embodiment of the same pipe. 4 is an explanatory diagram of a general refrigerant condenser, FIG. 5 is an explanatory diagram showing the flow of refrigerant in the refrigerant condenser, FIGS. 6 a, b, 7 a,
b is an explanatory diagram of the assembly of a pipe developed before the pipe of the present application, FIGS. 8a and b are detailed views as viewed from the Z arrow in FIG. 7a, and FIG. 9 is B-B in FIG. 7b. It is a detailed sectional view. 1 is a main body, 2 is a lid body, 3 is a receiving flange, 4 is an opening end surface, 5 is an inner support body, and 6 is a side edge.

Claims (1)

[Scope of utility model registration request] In a refrigerant condenser pipe in which a tube insertion hole is formed in the peripheral wall and a refrigerant partition plate is provided inside, the pipe is composed of a halved main body 1 and a halved lid 2, and either A tube insertion hole J is formed on one side, and a partition plate insertion hole K is formed on the other side.
The opening end face 4 of the lid body 2 is pressed against and opposed to the receiving flange 3 formed at the opening end of the lid body 3, and in this opposed state, the side edge 6 provided on the outside of the said receiving flange 3 is pressed against the outside of the lid body 3. A refrigerant condenser pipe characterized by being caulked and then brazed.