KR100687462B1 - Multi-thread type heat exchanger and the manufacture method - Google Patents

Abstract

The present invention relates to a heat exchanger capable of simultaneously introducing multiple media and a method of manufacturing the same, and more particularly, a plurality of spiral plates are indented and welded between an inner cylinder and an outer cylinder, and an inflow communicated with the media passage on the outer circumferential surface of the outer cylinder. By forming an outlet and forming a manifold connected to the inlet and outlet of the media outside the inlet and outlet, not only can the inlet and outlet of the multiple media simultaneously, but also weld the joints of the spiral plate individually. There is no need for a method of manufacturing the heat exchanger and its manufacturing method is very convenient.

According to the present invention, a plurality of spiral inlets are formed on the inner cylinder and the outer cylinder surface, and a spiral plate integrally press-formed is welded between each recess, and between the plate and the plate on the upper and lower sides of the outer cylinder. Inlets and outlets are formed in communication with the formed media passage, the manifold is formed on each of the inlets and outlets, and the inlet and outlet pipes are formed on one side of the manifold, respectively. A heat exchanger capable of simultaneously introducing multiple media;

A press molding step of press molding the plate into a disk shape; A tensioning step of tensioning the molded plate up and down; Forming a concave-convex surface on the upper surface of the plate, forming a coupling jaw at inner and outer circumferences, and forming a bent surface at one end of the plate; After the spiral inlet is formed on the inner and outer cylinder surfaces having different diameters, a media inlet and an outlet are formed between each of the inlets of the inner and outer cylinder upper and lower outer surfaces, and a plurality of media are inserted into the inlets. A medium passage forming step of forming a passage; A welding step of brazing the inner cylinder inner circumferential surface and the outer cylinder outer circumferential surface where the engaging jaw protrudes through each recess, and alternatively welding the bent surface of the plate corresponding to the front end of the medium passage according to the number of media; A manifold forming step of forming a manifold in which an inlet tube and an outlet tube are respectively formed on each of the inlets and outlets formed by outer and upper outer circumferential surfaces of the outer cylinder; Provided is a heat exchanger manufacturing method that can be introduced into the multi-media at the same time characterized in that it is manufactured through; forming the heat insulating material and the outer housing outside the outer cylinder.

Plate, brazing welding, auxiliary plate, media passage.

Description

Heat exchanger capable of introducing multiple media at the same time and its manufacturing method {Multi-thread type heat exchanger and the manufacture method}

1 is a cross-sectional view showing the whole of the present invention.

Figure 2a, 2b is a state diagram showing a plate forming step in the present invention

Figure 2c is a state diagram showing the step of forming the inner, outer cylinder in the present invention

Figure 3a, 3b is a state diagram showing the insertion state of the plate in the present invention

Figure 4 is a partial cross-sectional view showing a plate insertion position in the present invention

Figure 5 is a cross-sectional view showing the inflow state and type of media in the present invention

Figure 6 is a state diagram showing the mounting state of the manifold in the case of two media in the present invention

Figure 7 is an embodiment showing another embodiment of the present invention

Figure 8 is an embodiment showing another embodiment of the present invention

Figure 9 is an embodiment showing another embodiment of the present invention

<Description of Symbols for Major Parts of Drawings>

10: plate 10 ': auxiliary plate 11: uneven surface

12: engaging jaw 13: bent surface 20: media passage

20a ~ d: Channels 1 ~ 4 30: Inner cylinder 31: Inlet

40: outer cylinder 41: inlet 42: inlet

43: outlet 44: main inlet pipe 45: main outlet pipe

46: Auxiliary Outlet 50,50 ': Manifold 50 ": Auxiliary Manifold

51: inlet pipe 51 ': outlet pipe 51 ": auxiliary outlet pipe

60: insulation 70: outer housing

The present invention relates to a heat exchanger capable of simultaneously introducing multiple media and a method of manufacturing the same, and more particularly, a plurality of spiral plates are indented and welded between an inner cylinder and an outer cylinder, and an inflow communicated with the media passage on the outer circumferential surface of the outer cylinder. By forming an outlet and forming a manifold connected to the inlet and outlet of the media outside the inlet and outlet, not only can the inlet and outlet of the multiple media simultaneously, but also weld the joints of the spiral plate individually. There is no need for a method of manufacturing the heat exchanger and its manufacturing method is very convenient.

In general, a heat exchanger is a device that recovers thermal energy of a high-temperature fluid to a low-temperature fluid. A heat exchanger is a type of diaphragm having a diaphragm and a heat accumulator between two fluids, depending on the type. There are three types such as direct contact type where two fluids are in direct contact.

The present invention corresponds to a diaphragm which uses a heat transfer surface as a metal plate, and since a diaphragm heat exchanger completely separates two fluids, it is necessary to avoid mixing of fluids as in the chemical industry and the food industry. It is used for heat exchange fans to recover heat in a room, and boilers heated by combustion gases.

The plate heat exchanger is formed by stacking and welding a plurality of spiral inner plates in multiple stages to form a plurality of spiral passages, as shown in the present application filed in Korean Patent Application No. 10-2003-1250, 'Multi-Screw Heat Exchanger'. Since a number of spiral inner plates are welded individually by adjusting the angle to the outer circumferential surface of the inner cylinder, the inner circumferential surface of the outer cylinder and the inner plate must be welded again, and thus, the work process is very complicated, precision is required, and production cost is increased. In other words, welding at an angle is mainly performed by hand, which is not only productive but also causes problems such as poor heat exchange efficiency due to uneven media paths.

An object of the present invention is to solve such a problem in the prior art, it is possible to form a plurality of media passages to increase the heat exchange efficiency, easily to form a media passage in the inner and outer cylinders with a single spiral plate It is possible to shorten the time required for welding and to uniformize the heat exchange passage distance of the medium through the uneven surface and the plate having different starting and end points.

As a means for achieving the above object, a plurality of spiral inlet is formed on the outer circumferential surface of the inner cylinder and the inner circumferential surface of the outer cylinder, injecting a spiral plate between each inlet of the inner and outer cylinders, the inner circumferential surface of the inner cylinder and the outer cylinder of the inner cylinder protruding the spiral plate After brazing welding on the outer circumferential surface, inlets and outlets communicating with a plurality of media passages formed through the inlet of the spiral plate are formed at the upper side and the outer side of the outer cylinder, respectively. An object of the present invention is to provide a heat exchanger and a method of manufacturing the same, which can simultaneously introduce multiple media formed thereon.

Between the outer cylinder and the inner cylinder having the inlet pipe formed on the upper side and the outlet pipe formed on the lower side, the uneven surface is formed on the upper surface, and a plurality of spiral passages are formed in the inner and outer circumferential edges to form a plurality of spiral passages. In a typical heat exchanger, a plurality of spiral inlets are formed on the inner cylinder and the outer cylinder surface, and a spiral plate integrally press-formed is welded between the respective inlets, and the plate and the plate are provided on the upper and lower sides of the outer cylinder. Inlets and outlets are formed in communication with the media passage formed therebetween, the manifold is formed on each of the inlets and outlets, the inlet and outlet are formed on one side of the manifold, respectively. It is to be done.

In the above, an auxiliary inlet is formed between each inlet of the inner and outer cylinders, and the auxiliary inlet is equipped with an auxiliary plate having one side bent and an engaging jaw formed at the upper and lower ends thereof.

In the above, the plate is formed in the position of the upper end of the inner cylinder and the outer cylinder and the end of the inner cylinder and the outer cylinder in the opposite direction, and the bent surface for the welding is formed at the tip of the plate, the plate is introduced medium The start and end positions of the tip and the end are formed differently according to the number of.

In the above, the number of manifolds varies depending on the number of media introduced.

In the above, a plurality of auxiliary outlets are formed in the central portion of the outer cylinder communicating with the medium passage of the outflowing medium, and an auxiliary manifold connected to the auxiliary outlet pipe is formed outside the auxiliary outlet.

Between the outer cylinder and the inner cylinder having the inlet pipe formed on the upper side and the outlet pipe formed on the lower side, the uneven surface is formed on the upper surface, and a plurality of spiral passages are formed in the inner and outer circumferential edges to form a plurality of spiral passages. In a typical heat exchanger, a plurality of spiral inlets are formed on the inner cylinder and outer cylinder surfaces, and a spiral plate integrally press-molded is welded between each recess, and each medium formed between the plates and the plates. An auxiliary plate bent on one side is formed on the passage, but inlets and outlets are formed on the outer and upper sides thereof in communication with the media passage in the circumferential direction. One side of the manifold is formed with an inlet pipe and an outlet pipe It is characterized by the presence.

In the above, an auxiliary inlet is formed between each inlet of the outer cylinder, an auxiliary plate is attached to the auxiliary inlet, and the engaging jaw is formed at the upper and lower ends of the auxiliary plate.

In the above, the plate is formed in the position of the upper end of the inner cylinder and the outer cylinder and the end of the inner cylinder and the outer cylinder in the opposite direction, and the bent surface for the welding is formed at the tip of the plate, the plate is introduced medium The start and end positions of the tip and the end are formed differently according to the number of.

In the above, the number of manifolds varies depending on the number of media introduced.

In the above, a plurality of auxiliary outlets are formed in the central portion of the outer cylinder communicating with the medium passage of the outflowing medium, and an auxiliary manifold connected to the auxiliary outlet pipe is formed outside the auxiliary outlet.

A conventional heat exchanger manufacturing method comprising: a press molding step of press molding a plate into a disc shape; A tensioning step of tensioning the molded plate up and down; Forming a concave-convex surface on the upper surface of the plate, forming a coupling jaw at inner and outer circumferences, and forming a bent surface at one end of the plate; After the spiral inlet is formed on the inner and outer cylinder surfaces of different diameters, a media inlet and an outlet are formed between each inlet of the upper and lower outer peripheral surfaces of the inner and outer cylinders, and a plurality of media passages are inserted into the inlet. Forming a media passage; A welding step of brazing the inner cylinder inner circumferential surface and the outer cylinder outer circumferential surface where the engaging jaw protrudes through each recess, and alternatively welding the bent surface of the plate corresponding to the front end of the medium passage according to the number of media; A manifold forming step of forming a manifold in which an inlet tube and an outlet tube are respectively formed on each of the inlets and outlets formed by outer and upper outer circumferential surfaces of the outer cylinder; And a housing forming step of forming a heat insulating material and an outer housing to the outside of the outer cylinder.

In the above, in the medium passage forming step, a spiral inlet is formed on the inner and outer cylinder surfaces having different diameters, and an auxiliary recess is formed between each recess of the outer cylinder, and then a spiral plate is inserted into the recess. A plurality of media passages may be repeatedly formed by inserting an auxiliary plate bent at one side into the concave inlet.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the technical idea of the present invention.

1 is a cross-sectional view showing the whole of the present invention, Figures 2a, 2b is a state diagram showing the plate forming step in the present invention, Figure 2c is a state diagram showing the forming step of the inner, outer cylinder in the present invention, Figure 3a, Figure 3b is a state diagram showing the insertion state of the plate in the present invention, Figure 4 is a partial cross-sectional view showing the plate insertion position in the present invention, Figure 5 is a cross-sectional view showing the inflow state and type of media in the present invention, Figure 6 In the present invention, in the case of two kinds of media, a state diagram showing a mounting state of a manifold, FIG. 7 is an embodiment showing another embodiment of the present invention, and FIG. 8 is an embodiment view showing another embodiment of the present invention. 9 is an embodiment showing another embodiment of the present invention,

First, as shown in FIG. 2A, the disk-shaped plate 10 is press-molded, and then one side of the plate 10 is cut to tension the tip and the end of the cut surface up and down through a conventional rolling device. The beginning of the cut surface is tensioned so as to be positioned in the opposite direction to the end, that is, about 180 °, so that the medium can be uniformly introduced into the medium passage 20 formed through the plate 10 later.

As shown in FIG. 2B, the plate 10 spirally formed through the tension has a plurality of uneven surfaces 11 formed on the upper surface through a conventional forming apparatus, and the coupling jaw 12 is formed at the inner and outer circumferences thereof. ) And a bent surface 13 having a predetermined width for later welding.

The spiral plate 10 formed as described above is inserted between each of the inlets 31 and 41 of the inner cylinder 30 and the outer cylinder 40 as shown in FIGS. 3A and 3B. As described above, the inner and outer cylinders 30 and 40 are formed with the same number of spiral inlets 31 and 41 on the surface, and between each of the inlets 41 corresponding to the upper and lower portions of the outer cylinder 40. An inlet 42 and an outlet 43 to be in communication with the medium passage 20 are formed. Each of the inlets 42 and the outlets 43 is to cut one side of the media passage 20, which is a space to be formed between the plates 10, to increase the total passage area of the media, according to the type of media. In the case of the same medium, the outlet 43 and the inlet 42 are respectively formed on the same line in the case of the same medium, and the outlet 43 and the inlet 42 are respectively molded in the other line in the case of another medium. The number of lines of the outlet port 43 and the inlet port 42 varies according to the type of.

And when the plate 10 is inserted as shown in Figure 4 the position of the front end and the end of the inserted plate 10 according to the number of media is formed different, which is the inlet 42 and the outlet 43 is the same Since it is not formed in a line and is formed in multiple stages in different lines, the inlet 42 and the outlet 43 are formed so as to match the start and end positions of the media passage 20. That is, when the position of the inlet 42 and the outlet 43 and the start and end positions of the medium passage 20 are inconsistent, a portion of the medium passage 20 located above the inlet 42 and the lower portion of the outlet 43 This is because it is difficult to smoothly inflow and outflow of the medium because the air is filled in a portion of the media passage 20 located in the.

Coupling jaw (12) formed in the plate 10 during insertion is projected to the inner circumferential surface of the inner cylinder 30 and the outer circumferential surface of the outer cylinder 40, respectively, to guide the plate 10 to be inserted correctly.

In addition to the medium passage 20 that introduces the medium through the main inlet pipe 44 and the main outlet pipe 45 to be formed later on the outer cylinder 40 of the plate 10, the remaining medium passage 20 The bent surface 13 at the tip of the plate 10 to be formed is completely sealed by welding. That is, the front end and the end of the medium passage 20 connected to the main inlet pipe 44 and the main outlet pipe 45 are open, while the front end and the end of the remaining medium passage 20 are welded and sealed.

In addition, to fix the plate 10 to the inner and outer cylinders 30 and 40 into which the plate 10 is inserted, brazing welding is performed to completely seal the medium passage 20. Coupling jaw 12 is carried out only once in the inner circumferential surface and the outer circumferential surface of the outer cylinder (30) protruding it is possible to shorten the working time.

The medium passage 20 in which the plate 10 is fixed is formed in a fan shape when viewed from above, as shown in FIG. 5, which is because the inner diameter of the inner cylinder 30 and the outer cylinder 40 are different from each other. When the same number of inlets 31 and 41 are formed in the outer cylinder 40, the spacing between the inlets 31 formed in the inner cylinder 30 is narrow and the inlets 41 formed in the outer cylinder 40 are narrow. The spaced interval is wide so that the upper surface of the plate 10 inserted into the recess 31, 41 is formed in a fan shape.

The main inlet pipe 44 and the main outlet pipe 45 are formed on the upper and lower parts of the outer cylinder 40, and the medium inlet pipe 51 is formed outside the inlet 42 and the outlet 43 formed on the upper and lower outer peripheral surfaces thereof. ) And the outlet pipe 51 'are connected to each other to form a manifold 50, 50', where the inlet 42 and the outlet 43 are connected to the number or type of media. As described above, the number of manifolds 50 and 50 'varies depending on the number and type of media.

Therefore, if two different media are used, the manifolds 50 and 50 'are respectively one-stage up and down the outer cylinder 40, and if four different media are used, the manifolds 50 and 50' are manifolded up and down the outer cylinder 40. When the folds 50 and 50 'are respectively used in three stages and 10 kinds of different media, the manifolds 50 and 50' are formed in nine stages above and below the outer cylinder 40, respectively. The reason why the number of media and the stages of formation of the manifolds 50 and 50 'are not the same is because a single media flows into the main inlet pipe 44 and the main outlet pipe 45.

That is, in the case of four media, the upper side of the outer cylinder 40, the first stage of the manifold 50 to which the inlet pipe 51 through which the medium is introduced is connected, and the outlet pipe 51 'through which the medium flows out to the lower side of the manifold 50. 3) is formed in two stages of the manifold 50 'connected to the second stage, and one end of the manifold 50' to which the outlet pipe 51 'through which the medium flows is connected to the lower side of the outer cylinder 40 and the manifold ( 50 ') A total of three stages are formed by two stages of the manifold 50 to which the inlet pipe 51 through which the medium is introduced is connected.

When the manifolds 50 and 50 'are formed as described above, the heat insulating material 60 and the outer housing 70 are mounted on the outer circumferential surface of the outer cylinder 40, thereby completing the heat exchanger to be implemented in the present invention.

In another embodiment of the present invention, as shown in FIG. 7, an auxiliary medium passage 20 ′ other than the medium passage 20 may be formed, which is provided between each recess 41 of the outer cylinder 40. After the recess 41 'is formed, the auxiliary plate 10' having a &quot; " shape bent to one side is inserted into the auxiliary recess 41 '. At this time, the auxiliary plate 10 'is formed at the upper and lower ends thereof with the same coupling jaw 11' as the plate 10 and is easy to insert. After insertion, the auxiliary plate 10 'is fixed and sealed together with the plate 10 by brazing welding.

As such, the medium passage 20 can be added by mounting the auxiliary plate 10 '. If the auxiliary plate 10' is formed in the structure of forming the basic four medium passages 20, a total of eight medium passages are formed. When 20 is formed to pass two types of media, each media flows into the media passage 20 and the auxiliary media passage 20 'to increase the heat transfer area.

In another embodiment of the present invention, as shown in FIG. 8, a secondary outlet 46 penetrates the medium passage 20 that flows out after heat exchange in the center of the outer cylinder 40, and the secondary outlet 46. A) outside the auxiliary manifold (50 ″) is connected to the secondary outlet pipe (51 ″) was formed to allow some heat exchanged medium that is not completely heat exchanged depending on the purpose.

Referring to the operation of the heat exchanger formed as described above in more detail,

First of all, when four media passages 20 are formed to heat the two media, the structure of the heat exchanger is sequentially designated as the first to fourth media passages 20a, 20b, 20c, and 20d. Manifolds 50 and 50 'communicating with the first to fourth medium passages 20a, 20b, 20c, and 20d are formed one step above and below the outer cylinder 40, respectively. Manifolds (50, 50 ') are formed with an inlet pipe (51) and an outlet pipe (51') through which the medium flows in and out.

Therefore, when the first medium is introduced through the main inlet pipe 44 and the second medium is introduced through the inlet pipe 51 formed at the lower side of the outer cylinder 40, the first agent introduced into the main inlet pipe 44 is introduced. The first medium is directly introduced into the opened first and second medium passages 20a and 20b, and the second medium introduced into the inlet pipe 51 on one side of the lower side of the outer cylinder 40 is connected to the outer cylinder (50) through the manifold 50. 40) Each medium is introduced into the inlet 42 of the lower side of the outer cylinder 40 in communication with the upper one side outlet 43 and the corresponding manifold 50 ', where each medium is a lot to the nearest inlet 42 Since the tendency to inflow occurs, the inlet 42 does not flow much toward the side, but the beginning and the end of the plate 10 are formed on the opposite side, so that the medium is not only close to the inlet 42 but also the opposite inlet 42. It flows evenly. In addition, the medium introduced here is uniformly introduced to the inside of the plate 10 due to the uneven surface 11 formed on the upper surface of the plate 10.

In addition, the first and second media flowing in and out of the first to fourth media passages 20 exchange heat through the plate 10, and the heat exchanged first and second media are formed at respective outlets formed on the outer cylinder 40. At the same time, it flows out through the main outlet pipe 45 formed below the outer cylinder 40 at the same time.

When a total of 10 medium passages 20 are formed in order to heat exchange a total of 10 media divided into 1 to 5 media and 6 to 10 media, the structure of the heat exchanger is the first as shown in FIG. 9. ~ 10 medium passages 20 are designated in sequence, and the manifolds 50, 50 'communicating with the first to 10 medium passages 20 are formed in nine stages above and below the outer cylinder 40, respectively. Therefore, the inlet pipe 51 and the outlet pipe 51 'which each medium inflows and outflows are formed in the manifolds 50 and 50'.

Accordingly, when the first to the tenth medium flows in and out through each of the inflow pipes 51 and the outflow pipes 51 'formed on the upper and lower sides of the main inflow pipe 44, the outflow pipe 45, and the outer cylinder 40, , The media flowing in and out through the main inlet pipe 44 and the main outlet pipe 45 flows directly into and out of the open medium passage 20, and the rest of each of the inlet pipes 51 and the outlet pipes 51 ′. In and out through the manifold (50, 50 ') connected to the manifold (50, 50') to the inlet port 42 and the outlet port 43, the upper and lower outer cylinder 40 in communication with.

After the first to the tenth medium is introduced and circulated in the first to tenth medium passage 20 is heat exchanged through the plate 10, the manifold through each outlet 43 formed on the outer cylinder 40, the lower side It exits to 50 ', then flows out to the outflow pipe 51', and also flows out through the main outflow pipe 45 formed under the outer cylinder 40 below.

In this case, only two or four media may be introduced into the ten medium passages 20, instead of ten media. In this case, the heterogeneous media may be introduced into a single conduit so that the media can be introduced into a single medium. Can be used as it is, it is very practical.

As described above, the present invention not only makes the manufacturing method very convenient as compared with the conventional heat exchanger which requires angle adjustment of the separated plate and welds one by one, and also smoothly induces the inflow of homogeneous or heterogeneous media, thereby increasing heat exchange efficiency. It is very practical to increase the heat transfer area through the auxiliary plate (10 '), thereby easily expanding the medium passage (20).

According to the present invention, the plate is integrally pressed into the inner and outer cylinders with the inlet formed therein, and the plate is fixed and sealed at one time by brazing welding so that the manufacturing method is very convenient and the working time and cost can be reduced. In addition, the manifold, inlet, and outlet can smoothly guide the inflow of the media, and the auxiliary plate can be used to increase the number of media passages while maximizing the heat transfer area. It works.

Claims (12)

Between the outer cylinder and the inner cylinder having the inlet pipe formed on the upper side and the outlet pipe formed on the lower side, the uneven surface is formed on the upper surface, and a plurality of spiral passages are formed in the inner and outer circumferential edges to form a plurality of spiral passages. In a typical heat exchanger, a plurality of spiral inlets are formed on the inner cylinder and the outer cylinder surface, and a spiral plate integrally press-formed is welded between the respective inlets, and the plate and the plate are provided on the upper and lower sides of the outer cylinder. Inlets and outlets are formed in communication with the media passage formed therebetween, the manifold is formed on each of the inlets and outlets, the inlet and outlet are formed on one side of the manifold, respectively. Heat exchanger capable of introducing multiple media at the same time. According to claim 1, wherein the auxiliary inlet is formed between each inlet of the inner, outer cylinder, the auxiliary inlet is bent on one side and the auxiliary plate is formed with a coupling jaw formed on the upper and lower ends Heat exchanger capable of introducing multiple media at the same time. According to claim 1, wherein the plate is formed in the opposite direction of the start portion of the inner cylinder and the outer cylinder upper side and the inner cylinder and the outer cylinder lower side, the bent surface for welding is formed at the tip of the plate, the plate is A heat exchanger capable of introducing multiple media at the same time, characterized in that the start and end positions of the front end and the end are differently formed according to the number of media to be introduced. 2. The heat exchanger of claim 1, wherein the number of manifolds varies depending on the number of media introduced. The method of claim 1, wherein the central portion of the outer cylinder is formed with a plurality of auxiliary outlets communicating with the medium passage of the outflow medium, the auxiliary outlet is formed outside the auxiliary manifold connected to the auxiliary outlet pipe multiple Heat exchanger capable of introducing media at the same time. Between the outer cylinder and the inner cylinder having the inlet pipe formed on the upper side and the outlet pipe formed on the lower side, the uneven surface is formed on the upper surface, and a plurality of spiral passages are formed in the inner and outer circumferential edges to form a plurality of spiral passages. In a typical heat exchanger, a plurality of spiral inlets are formed on the inner cylinder and outer cylinder surfaces, and a spiral plate integrally press-molded is welded between each recess, and each medium formed between the plates and the plates. An auxiliary plate bent on one side is formed on the passage, but inlets and outlets are formed on the outer and upper sides thereof in communication with the media passage in the circumferential direction, and manifolds are formed outside the inlets and outlets, respectively. One side of the manifold is formed with an inlet pipe and an outlet pipe A heat exchanger capable of introducing multiple media simultaneously. The method of claim 6, wherein the auxiliary inlet is formed between each of the inlet of the outer cylinder, the auxiliary plate is mounted to the auxiliary inlet, the engaging jaw is formed on the upper and lower ends of the auxiliary plate Heat exchanger capable of introducing multiple media at the same time. According to claim 6, wherein the plate is formed in the opposite direction of the starting portion of the inner cylinder and the outer cylinder upper end and the inner cylinder and the outer cylinder lower side, the bent surface for welding is formed at the tip of the plate, the plate is A heat exchanger capable of introducing multiple media at the same time, characterized in that the start and end positions of the front end and the end are formed differently according to the number of the introduced media. 7. The heat exchanger of claim 6, wherein the number of manifolds varies depending on the number of media introduced. The method of claim 6, wherein a plurality of auxiliary outlets are formed in the center of the outer cylinder in communication with the medium passage of the outflow medium, the auxiliary manifold connected to the auxiliary outlet pipe is formed outside the auxiliary outlet multiple Heat exchanger capable of introducing media at the same time. A conventional heat exchanger manufacturing method comprising: a press molding step of press molding a plate into a disc shape; A tensioning step of tensioning the molded plate up and down; Forming a concave-convex surface on the upper surface of the plate, forming a coupling jaw at inner and outer circumferences, and forming a bent surface at one end of the plate; After the spiral inlet is formed on the inner and outer cylinder surfaces of different diameters, a media inlet and an outlet are formed between each inlet of the upper and lower outer peripheral surfaces of the inner and outer cylinders, and a plurality of media passages are inserted into the inlet. Forming a media passage; A welding step of brazing the inner cylinder inner circumferential surface and the outer cylinder outer circumferential surface through which the engaging jaw protrudes through each recess, and alternatively welding the bent surface of the plate corresponding to the tip of the medium passage according to the number of media; A manifold forming step of forming a manifold in which an inlet tube and an outlet tube are respectively formed on each of the inlets and outlets formed by outer and upper outer circumferential surfaces of the outer cylinder; And a housing forming step of forming a heat insulating material and an outer housing to the outside of the outer cylinder. 12. The method of claim 11, wherein in the medium passage forming step, a spiral inlet is formed on the inner and outer cylinder surfaces having different diameters, and an auxiliary inlet is formed between each inlet of the outer cylinder, and then a spiral plate is inserted into the inlet. And inserting an auxiliary plate bent at one side into the auxiliary inlet to repeatedly form a plurality of media passages.

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