JPH0678877B2 - Pipe for refrigerant condenser - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerant condenser pipe used in an air conditioner for an automobile or the like.

[0002]

2. Description of the Related Art As shown in FIG. 3, a refrigerant condenser of an air conditioner passes from one pipe A through a flat tubular tube B to another pipe C, and then from the pipe C to a tube.
This is to apply a pressure to the refrigerant flowing meandering through the pipe B to the pipe A to forcibly dissipate the heat so that the refrigerant becomes a low-temperature and high-pressure cooling liquid. The heat released at this time is transferred to the tube B, transferred to a corrugated fin (hereinafter referred to as fin) D connected to the tube B, and dissipated by the air blown to the fin D. I am doing it.

As shown in FIG.
A large number of tube insertion holes E for inserting the tubes B are formed by press working. After inserting the tubes B into the tube insertion holes E, the tubes B and the same insertion holes are formed. E
The fin D and the periphery thereof are fixed by being attached to each other, and the refrigerant is prevented from leaking from the insertion hole E.

In this conventional pipe A, as shown in FIG. 4, the peripheral portion between the adjacent tube insertion holes E is formed into a dome shape so that the peripheral portion thereof is largely depressed at the time of press working. However, the tube B was easily inserted into the same insertion hole E.

[0005]

However, in the conventional refrigerant condenser pipe, as shown in FIG. 4, since the peripheral wall between the adjacent tube insertion holes E is of a dome shape, the tube is inserted into the insertion hole E. -When B is inserted, both ends of fin D are pipe A
It is supported by one point on the surrounding wall. For this reason, the fins D are likely to be displaced between the time when the fins D are arranged between the tubes B and the time when they are attached, and the heat transfer coefficient from the pipe A to the fins D is poor, so that the entire refrigerant condenser is There was also a problem of low heat dissipation efficiency.

An object of the present invention is to provide a pipe for a refrigerant condenser in which the tube can be easily inserted, the fins are not easily displaced and the heat dissipation efficiency is high.

[0007]

A refrigerant condenser pipe of the present invention is a refrigerant condenser pipe in which a tube insertion hole 3 is formed in a peripheral wall 2 of a pipe 1 as shown in FIG.
As shown in FIG. 1, depressions 4 are formed between adjacent tube insertion holes 3 in the peripheral wall 2, and depressions 4 are formed on both outer sides of the depressions 4.
It is characterized in that a supporting portion 5 protruding further outward is formed.

[0008]

As shown in FIG. 1, the refrigerant condenser pipe of the present invention has the recesses 4 formed in the peripheral wall 2 between the adjacent tube insertion holes 3, and the support portions 5 are formed on both outer sides of the recesses 4. Therefore, when the fins D are inserted between the adjacent tubes B, both ends of each fin D are supported by the support portions 5 at two points. Therefore, the fins D are less likely to be displaced before the fins D and the pipe 1 are attached to each other. Further, since each fin D hits both support portions 5 at two points, the heat transfer coefficient from the pipe 1 to the fin D is improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the refrigerant condenser pipe of the present invention. Reference numeral 1 shown in the figure is a pipe, and this pipe 1
An insertion hole 3 into which the tube B is inserted is formed in the peripheral wall 2 by press working or the like. As in the conventional case, the peripheral portion of the insertion hole 3 may be largely recessed when the insertion hole 3 is pressed, so that the tube B can be easily inserted into the insertion hole 3.

Reference numeral 4 in FIG. 1 indicates adjacent tucks on the peripheral wall 2.
Between the insertion holes 3, as shown in FIG. 3A, there are horizontally formed dents, and 5 is a support portion formed on both outer sides of the dent 4. The two support portions 5 are adjacent to each other in the tube B.
The two ends of each fin D inserted in between are supported at two points, and the recess 4 is for forming the same support portion 5. By the way, by forming the depression 4, the strength of the pipe 1 is also improved.

If the recess 4 is formed at the same time when the tube insertion hole 3 is pressed, the support portions 5 on both outer sides thereof are also formed, which is convenient. The insertion hole 3, the recess 4, and the support portion 5 are formed in the assembly-type pipe 1 composed of a half-split main body 6 and a lid body 7 as previously filed by the present inventor. May be (Practical application Sho 63-17
No. 1253).

In the present invention, the tube B is inserted into the tube insertion hole 3 and the fin D is inserted between the adjacent tubes B to support it on the supporting portion 5 of the pipe 1, and then the pipe 1. The tube B and the fin D are attached to each other to form a refrigerant condenser. In this case, a roller material is previously applied to the respective portions of the pipe 1, the tube B, and the fins D to be attached, and when the pipe 1 is heated, the material is melted and attached. It is convenient to set.

[0013]

The refrigerant condenser pipe of the present invention has the following effects. ． Since the support portions 5 are formed on both outsides of the recesses 4 between the adjacent tube insertion holes 3, both ends of the fin D inserted between the adjacent tubes B are two points on both support portions 5. It is supported and is less likely to be displaced. ． Since each fin D contacts two points on both support parts 5, the heat transfer coefficient from the pipe 1 to the fin D is improved as compared with the conventional one, and the cooling efficiency of the entire refrigerant condenser is improved.

.. Since air blows through between the depressions 4 and the fins D, the heat dissipation rate is improved and the cooling efficiency of the entire refrigerant condenser is further improved. ． By forming the recess 4 in the pipe 1, the pipe 1
The strength of the pipe 1 with respect to the pressure of the refrigerant flowing therein is improved. ． Since the pipe 1 and the fin D are in contact with each other at two points, there is no possibility that the fin is deformed and the appearance is deteriorated when the two are attached to each other.

[Brief description of drawings]

1A is a front view showing an embodiment of a pipe for a refrigerant condenser of the present invention, and FIG. 1B is a vertical cross-sectional view of FIG. 1A.

FIG. 2 is an assembly explanatory view showing another embodiment of the pipe.

FIG. 3 is an explanatory diagram of a refrigerant condenser.

FIG. 4 is an explanatory cross-sectional view showing a conventional refrigerant condenser pipe.

[Explanation of symbols]

 1 is a pipe 2 is a peripheral wall 3 is a tube insertion hole 4 is a depression 5 is a support portion

Claims (1)

[Claims] 1. A pipe for a refrigerant condenser in which a tube insertion hole (3) is formed in a peripheral wall (2) of a pipe (1), wherein adjacent tube insertion holes (3) in the peripheral wall (2) are provided. A pipe for a refrigerant condenser, characterized in that a recess (4) is formed therebetween, and support portions (5) projecting outward from the recess (4) are formed on both outer sides of the recess (4).