KR200145268Y1 - Heat exchanger of air conditioner for a vehicle - Google Patents

Abstract

The present invention discloses a heat exchanger for an automotive air conditioner having an improved structure of a manifold.

According to a feature of the present invention, by further providing a pipe connection through hole in any one pair of forming plate members joined to each other to form a manifold, a pipe, which is a heat exchange medium inflow and outflow passage, can be coupled to the connection through hole. Since the pipes can be coupled in parallel with the heat exchanger body, the space distance between the pipe and the body can be shorter than in the conventional structure, thereby improving space efficiency, and improving the pipe precision of the pipe and the manifold and the heat exchanger body. In addition, the manifold and pipe can be brazed together to improve work efficiency.

Description

Heat exchanger of automotive air conditioner

1 is a schematic plan view showing a heat exchanger of a conventional general automotive air conditioner.

2 is a schematic front view of the conventional heat exchanger shown in FIG.

3 is a sectional view taken along the line III-III of FIG.

4 is an exploded perspective view showing an manifold extracted from the conventional heat exchanger shown in FIGS. 1 and 2.

Figure 5 is an exploded perspective view showing a heat exchanger of the automotive air conditioner according to an embodiment of the present invention.

6 is a schematic front view of the inventive heat exchanger shown in FIG.

FIG. 7 is a cross-sectional view taken along line VII-VII of FIG. 6. FIG.

8 is an exploded perspective view illustrating an manifold of the inventive heat exchanger shown in FIGS. 5 and 6.

9 is a-a cross-sectional view of the manifold according to the present invention shown in FIG.

10 is a schematic view showing a manifold according to another embodiment of the present invention.

FIG. 11 is a schematic front view illustrating a state in which a manifold is mounted on a heat exchanger according to another embodiment of the present invention shown in FIG. 10.

12 is a side view of FIG. 11, and

FIG. 13 is a plan view of FIG.

* Explanation of symbols for main parts of the drawings

10: heat exchanger 50: main body

52,52: intermediate through 53, 53: intermediate through

60: manifold 61, 62: 1st, 2nd forming plate member

63,63 ', 64, 64': First through hole 65: Second through hole

65a: Skirt 66: Border bonded surface

67, 67 ': center junction surface 600: manifold

601: forming plate member 603, 604: first through hole

605: through the second

The present invention relates to a heat exchanger of a vehicle air conditioner, and more particularly to a manifold used as a connecting means for connecting the refrigerant inlet pipe.

In general, a heat exchanger used in an automotive air conditioner includes an evaporator through which a refrigerant that is a heat exchange medium flows, and a heater core that uses cooling water of an automobile engine as a heat exchange medium.

In the accompanying drawings, FIGS. 1 and 2 show heat exchangers mainly used in evaporators and the like of conventional general air conditioners for automobiles. FIG. 1 is a plan view and FIG. 2 is a front view.

1 and 2, the heat exchanger 1 includes a main body 2 and a pair of manifolds 3 coupled to the main body 2. In the main body 2, a plurality of forming plates 29 are paired and brazed to form a space so that a heat exchange medium flows therein and heat exchanges with the outside. And, at the end of each manifold (3) coupled to the main body (2) pipe members (9) forming a part of the flow path so that the heat exchange medium flowing along the closed path flows into the inside of the main body (2) Is combined. In the heat exchanger 1 having the structure as described above, the heat exchange medium is introduced into the space inside the main body 2 through one manifold to exchange heat with the outside, and then flows out through the other manifold.

3 is a cross-sectional view taken along line III-III of the conventional heat exchanger shown in FIG. 2, and FIG. 4 is a manifold which is a refrigerant inlet and outlet connecting means of the conventional heat exchanger shown in FIGS. Is an exploded perspective view showing an extract.

Hereinafter, referring to FIGS. 3 and 4, the coupling structure of the heat exchanger body and the manifold, and the structure of the manifold will be described.

Referring first to FIG. 4, the manifold 3 is formed by brazing a pair of forming plate members 31 and 31 ′, and the edges of the forming plate members 31 and 31 ′ Edge joining surfaces 36 and 36 'which are brazed to each other are provided. The center joining surfaces 37 and 37 'which are brazed to each other are provided at the center of the forming plate members 31 and 31'. In addition, through holes 32 and 32 'on both sides of each of the center joining surfaces 37 and 37', heat exchange medium flowing in and out through the pipe member 9 can enter and exit the body 2. 33 and 33 'are formed. In forming the manifold 3 by brazing the forming plate members 31 and 31 ′ having such a structure to correspond to each other, a pair of forming plate members 31 and 31 ′ are brought into close contact with each other. After the edge joining surfaces 36 and the center joining surfaces 37 are fixed in surface contact with each other, braze joining is performed.

The manifold 3 formed as described above is coupled to the main body 2 of the heat exchanger 1, as shown in FIG. 3, and has a pair of through holes 32 and 32 'on each side ( In the main body 2 to which the manifold 3 having the 33 and 33 'is coupled, the intermediate through hole 22 is formed at a portion facing the through holes 32, 32', 33 and 33 '. 22 ', 23 and 23' are formed. Therefore, the heat exchange medium flowing through the pipe to be connected to the pipe connecting portion 34 of the manifold 3, the through holes 32, 32 ', 33, 33' formed in one manifold and the through Space inside the body 2 through the through holes 22, 22 ', 23, 23' of the body 2 facing the balls 32, 32 ', 33, 33'. After flowing into the part 21 and performing heat exchange with the outside, it flows out through the intermediate through hole of the main body 2 and the through hole of the other manifold to the end of the manifold to which the pipe member is connected.

In the above, the structure of the heat exchanger 1 main body and the manifold of the conventional air conditioner for automobiles and their coupling relationship have been briefly described, but the conventional heat exchanger 1 having the above-described structure has the following problems. have. That is, since the pipe connecting portion 34 of the manifold 3 is formed at the end thereof, the pipe member 9 is connected to the wide wall surface of the heat exchanger body in a vertical direction so that the pipe member 9 In addition, there is a problem in that the space efficiency is low even when the connection of the pipe member is completed, and thus there is a disadvantage that the work efficiency is also lowered. In addition, when brazing the pipe member to the pipe connection due to the rounding or burr generated at the end when the forming plate members 31 and 31 ′ are pressed, a gap is generated. There was a problem to weld separately because the fall.

Therefore, the present invention was devised to improve the above-described problems in view of the above-described conventional problems, and an object of the present invention is to improve the structure of a manifold used as a connecting means for connecting a refrigerant inlet pipe. It is to provide a heat exchanger with improved bonding accuracy, workability and space efficiency.

In order to achieve the above object, the heat exchanger of the air conditioner for an automobile according to the present invention includes: a main body having a plurality of intermediate through holes and the heat exchange medium introduced into the internal through the intermediate through holes to exchange heat with the outside; The first plate member and the second plate member each having a pair of through holes are joined to correspond to each other, and the through holes are coupled to the main body so as to face the intermediate through holes, thereby forming an outflow passage connecting means of the heat exchange medium. The heat exchanger provided with the manifold WHEREIN: The through-hole which connects the said heat exchange medium outflow passage is provided in the side wall of any one of the said 1st plate member and the said 2nd plate member.

In the heat exchanger of the vehicle air conditioner according to the present invention, in particular, the first plate member and the second plate member is formed in the L-shape, the one side wall of the heat exchange medium outflow passage It may be configured so that the second through-hole is provided. The second through hole is preferably provided with a skirt portion protruding in one side to surround one end of the pipe member to be joined.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the heat exchanger of the vehicle air conditioner according to the present invention.

5 and 6 of the accompanying drawings show a heat exchanger of the air conditioner for a vehicle according to an embodiment of the present invention, Figure 5 is a plan view, Figure 6 is a front view.

As shown in FIG. 5 to FIG. 6, the overall external structure of the heat exchanger 10 of the air conditioner for automobiles according to the present invention is the external structure of the conventional heat exchanger 1 as described above. Likewise, a plurality of forming plates 59 are brazed to be laminated to each other, and the heat exchange medium introduced therein is coupled to the main body 50 which performs heat exchange with the outside, and is bonded to the main body 50 by braze bonding. At the end, the manifold 60 is connected to the pipe member 90 so that the heat exchange medium flows in and out.

The basic function of such a heat exchanger 10 is also the same as that of the conventional heat exchanger 1 described above. Therefore, a description thereof will be omitted, and hereinafter, the structure of the manifold 60 and the coupling structure of the main body 50 constituting the characteristic components of the present invention will be described with reference to FIGS. 7 and 8.

FIG. 7 is a sectional view taken along line VII-VII of the present invention heat exchanger shown in FIG. 6, and FIG. 8 is an exploded perspective view showing an manifold of the present invention heat exchanger shown in FIG. 6, and FIG. 8 is a cross-sectional view illustrating aa line of the manifold according to the present invention.

First, referring to FIG. 8, the manifold 60 used in the heat exchanger 10 according to the present invention is formed into a predetermined shape, and the center joining surfaces 67 and 67 'and the rim joining surface 66 ( 66 ') consists of a pair of forming plate members 61 and 62, which are brought into surface contact with each other. The first through holes 63, 63 ', 64 and 64' are formed on both sides of the center joining surfaces 67 and 67 'of the forming plate members 61 and 62 so as to correspond to each other. In addition, a second through hole 65 to which a pipe (not shown), which is a heat exchange medium inflow and outflow passage, is connected to one side of a through hole of one of the forming plate members 61 and 62, in this embodiment, 62. ) To achieve a more structured structure. Accordingly, the forming plate members 61 and 62 have a size that is slightly extended in overall length than before, and the one side (inner) direction to surround one end of the pipe member to be joined to the second through hole 65. The skirt portion 65a which protrudes is formed.

The forming plate members 61 and 62 having the above structure are joined to correspond to each other to form the manifold 60, which is coupled to the main body 50 as shown in FIG. In the same manner as in the conventional coupling structure, the intermediate through holes 52 and 53 of the main body 50 and the first through holes 63, 63 ', 64 and 64' of the manifold 60 are different from each other. Combined to face. In this case, as shown, the portion in which the second through hole 65 is formed protrudes from the main body 50 by a predetermined length so that the second through hole 65 is completely opened. Therefore, when the pipe, which is the heat exchange medium outflow passage, is coupled to the second through hole 65, the pipe may be coupled in a direction parallel to the main body 50, and thus the separation distance between the pipe and the main body is known. Since it is possible to shorten the space efficiency and improve the efficiency of pipe coupling in a narrow space, and also to wrap one end of the pipe member to which the skirt portion 65a of the second through hole 65 is joined. It has the advantage of improving the precision of the joining. In addition, in the case of braze bonding together with the heat exchanger body after coupling the pipe member to the second through hole 65 of the manifold 60 in advance, the process of welding the pipe member after the braze bonding of the heat exchanger body may be omitted. It also has the advantage of improving productivity through effects such as process shortening.

10 is a schematic view showing a manifold according to another embodiment of the present invention, and FIG. 11 shows a state in which a manifold according to another embodiment of the present invention shown in FIG. 10 is mounted on a heat exchanger. A schematic front view is shown, FIG. 12 is a side view of FIG. 11, and FIG. 13 is a plan view of FIG.

As shown in FIG. 10 to FIG. 13, as another embodiment of the present invention to form the overall shape of the pair of forming plate member 601 bonded to each other to form the manifold 600 in a c-shape At the same time, the first through holes 603 and 604, which are intermediate through holes, may be formed, and the through holes 605 for pipe connection may be further provided in any one of them, so as to have the same effect as the above-described embodiment. have.

As described above, the heat exchanger according to the present invention further increases the space efficiency by providing a through hole for pipe connection of any one pair of forming plate members which are joined to each other to form a manifold. Improved joining accuracy and brazing of heat exchanger body and manifold pipe are integrated to improve work efficiency.

Claims (3)

The main body has a plurality of intermediate through holes and the heat exchange medium introduced into the internal through the intermediate through holes exchange heat with the outside, and the first plate member and the second plate member each having a pair of first through holes The first plate member, comprising: a manifold joined to the main body such that the first through holes are coupled to the main body so as to face the intermediate through holes, thereby forming an outflow passage connecting means of the heat exchange medium. And a second through hole on the side wall of any one of the second plate members, to which the heat exchange medium inflow and outflow passages are connected. The method of claim 1, wherein the first plate member and the second plate member is formed in the shape of the L-shape, one of the side walls of which is provided with a second through hole to which the heat exchange medium outflow passage is connected. Heat exchanger of the automotive air conditioner characterized in that. According to claim 1 or 2, characterized in that the second through-hole is provided with a skirt portion protruding to one side to surround one end of the pipe member to be joined.