Hybrid heat exchanger

Abstract

The present invention relates to a hybrid heat exchanger and, more specifically, to a hybrid heat exchanger capable of improving heat exchange efficiency while allowing the strength of the heat exchanger to be reinforced. To this end, a heat transfer unit includes first to fourth panel-shaped plates that are repeatedly stacked, wherein the first plate includes a plurality of first mixing parts, each including mixing areas and an etched area, and a first fin part in which a flow path is formed by means of a plurality of fins, the second plate includes a second mixing part and second fin parts, which are arranged to be alternated with the first mixing parts and the first fin part of the first plate, the second plate is provided between the first and third plates, and the fourth plate is provided on the third plate.

Description

Hybrid heat exchanger

[0001] The present invention relates to a hybrid heat exchanger, and more specifically, to a hybrid heat exchanger capable of improving heat exchange efficiency while reinforcing the strength of the heat exchanger.

[0002] Heat exchangers are used to change only the temperature or induce a phase change by cooling or heating a specific fluid; generally, they utilize a method in which heat exchange is achieved by arranging multiple fluids of different temperatures in a superimposed manner.

[0003] While heat exchangers were conventionally used for maintaining temperatures for heating and cooling, recently they are being widely used to control the vaporization and liquefaction processes of fluids to improve transport convenience and convert them into phases suitable for use as engine fuel.

[0004] There are many types of such heat exchangers, among which the Printed Circuit Heat Exchanger (PCHE) is manufactured by processing multiple fluid passages through a metal plate to a predetermined diameter using chemical etching or the like, and then stacking and bonding them together. Compared to conventional shell and tube or U-tube type heat exchangers, it can be installed in a much smaller volume under the same operating environment and can be easily applied to high-pressure operating environments.

[0005] However, while this PCHE can be used at high pressure, it is processed by etching, so there is a problem that the design of the flow path shape (only plain and wavy are possible) is limited compared to the PFHE below.

[0006] As another type of heat exchanger, the Plate-Fin Heat Exchanger (PFHE) is a Multi-Stream heat exchanger in which a flow path formed by laying fins of a specific shape between plates is called a heat exchange plate or layer, and it is manufactured by stacking these layers, placing them in a furnace, and then brazing them.

[0007] However, while such PFHEs can be designed with various flow path shapes (plain, wavy, serrate, perforate, etc. possible) depending on the shape of the fins, as mentioned above, there is a problem that they can only be used at low pressures.

[0008] In addition, PFHE has problems such as leakage occurring in the side bar, structural defects due to strength issues of the insert metal coated on the parting sheet, and the occurrence of unjoined parts.

[0009] Therefore, in order to solve these problems, a heat exchanger is being developed that combines conventional PFHE and PCHE, with PFHE layers and PCHE layers sequentially stacked layer by layer.

[0010] However, in the case of a conventional heat exchanger combining PFHE and PCHE, if the pressure difference between the PFHE layer and the PCHE is large, the PFHE layer is compressed and deformed because the PFHE is structurally weak, causing a leak.

[0011] In particular, in ultra-high pressure environments of about 850 bar, such as compressed hydrogen, conventional combined heat exchangers have the problem of weak structural strength of the core.

[0012] In addition, to form the PFHE layer, a parting sheet, a side bar, and a filter metal are required, and due to the filter metal, there are problems such as difficulty in joining and vulnerability to leakage caused by process differences such as brazing and diffusion bonding temperatures and holding times.

[0013] The present invention was conceived based on the technical background described above, and aims to provide a hybrid heat exchanger capable of improving heat exchange efficiency while reinforcing structural strength.

[0014] And the purpose is to provide a hybrid heat exchanger in which PFHE and PCHE are mixed in a single layer in the width direction of the flow path.

[0015] In addition, the purpose is to provide a hybrid heat exchanger that does not require a complex configuration and has an easy manufacturing process.

[0016] And the purpose is to provide a hybrid heat exchanger capable of changing the flow direction and uniformly distributing the flow in each layer.

[0017] The present invention, for achieving the above objective, comprises a heat exchanger including a main body, a header provided in the main body through which a first fluid and a second fluid flow in and out, and a heat transfer section provided inside the main body, wherein a flow path is formed to perform heat exchange between the first and second fluids, wherein the heat transfer section comprises first to fourth plates in the shape of plates that are repeatedly stacked, wherein the first plate comprises a plurality of first mixing sections, each comprising a mixing area formed at one end and the other end respectively for mixing the incoming fluid and an etching area in which a flow path is formed by etching between the mixing areas, and a first fin section provided between the plurality of first mixing sections, wherein the bottom section is formed by internal etching and a plurality of fins provided on the bottom section form a flow path, wherein the third plate comprises a second mixing section and a second fin section arranged to be staggered with respect to the first mixing section and the first fin section of the first plate, and the second plate is provided between the first and third plates and is provided facing the first plate with a configuration corresponding to the first plate, and the fourth The plate is provided on the third plate and is provided facing the third plate with a configuration corresponding to the third plate, and has a through hole formed on one or both sides of each mixing area connecting the mixing areas, and a connecting flow path further provided in the part where fluid inflow and outflow in each mixing area and the part in contact with the through hole, and the first fluid flows into the header of the front end, flows through the first and second plates to the third and fourth plates, flows through the third and fourth plates to the first and second plates and flows out to the header of the rear end, and the second fluid flows into the header of the other end, flows through the first and second pin parts and flows out to the header of the first end.

[0018] And according to a preferred embodiment of the present invention, the mixing area is characterized by having a plurality of protrusions connected to each corresponding flow path of the etching area.

[0019] In addition, according to a preferred embodiment of the present invention, the first pin portion is composed of a bottom portion and a pin of the first plate and a bottom portion of the second plate, and the second pin portion is composed of a bottom portion and a pin of the third plate and a bottom portion of the fourth plate.

[0020] The present invention for achieving the above objective comprises a heat exchanger including a main body, a header provided in the main body through which a first fluid and a second fluid flow in and out, and a heat transfer section provided inside the main body, wherein a flow path is formed to perform heat exchange between the first and second fluids, wherein the heat transfer section comprises a plate-shaped fifth to eighth plate that is repeatedly stacked, wherein the fifth plate comprises a plurality of first etching sections including a flow path formed by etching, a bottom section provided between the plurality of first etching sections and formed by internal etching, and a first fin section having a flow path formed by a plurality of fins provided on the bottom section, wherein the seventh plate comprises a second etching section and a second fin section arranged to be staggered from each other by the first etching section and the first fin section of the fifth plate, wherein the sixth plate is provided between the fifth and seventh plates and is provided facing the first plate in a configuration corresponding to the first plate, and the eighth plate is provided on the seventh plate and is provided facing the seventh plate in a configuration corresponding to the seventh plate. A through hole connecting each of the above-mentioned etching sections is further provided, and the first fluid flows into the header of the front end, passes through the fifth and sixth plates, flows to the seventh and eighth plates, flows through the seventh and eighth plates, flows to the fifth and sixth plates, and flows out to the header of the rear end, and the second fluid flows into the header of the other end, passes through the first and second pin sections, and flows out to the header of the first end.

[0021] In addition, the first pin portion is composed of the bottom portion and pin of the fifth plate and the bottom portion of the sixth plate, and the second pin portion is composed of the bottom portion and pin of the seventh plate and the bottom portion of the seventh plate.

[0022] The present invention based on the above-described configuration can expect the following effects.

[0023] It has the effect of improving heat exchange efficiency while reinforcing structural strength.

[0024] That is, instead of stacking PFHE and PCHE as separate layers, they are mixed in a single layer in the direction of the flow path, so that there is a region between each mixed section and fin section where sufficient strength reinforcement can be provided, thereby reinforcing the strength of the heat exchanger core and improving heat exchange efficiency.

[0025] Here, the areas where strength reinforcement is achieved are located between the mixing section and the pin section, and between the etching section and the pin section. Since a relatively wider area than conventionally is provided to come into contact between each plate, the effect of sufficient strength reinforcement is achieved.

[0026] In addition, a through hole can be formed in the area where strength reinforcement is performed to secure the flow path of the PCHE, thereby improving heat exchange efficiency, and such through hole can be easily formed through double-sided etching during the etching process without a separate processing process.

[0027] In addition, the mixing area has the effect of changing the flow direction and making the flow distribution uniform in each layer.

[0028] Furthermore, complex components such as parting sheets, sidebars, and filter metals are not required. By forming the fin section by fabricating the fins within the plate using diffusion bonding, the number of component types is reduced, simplifying the process. Additionally, structural stability is improved as no unbonded parts occur, and the risk of leakage is reduced.

[0029] In addition, it should be noted that other effects of the present invention will be encompassed to a broader extent by the embodiments described above and the matters described in the claims of the present invention, as well as by effects that can be easily derived from them and potential advantages that contribute to industrial development.

[0030] FIG. 1 is a perspective view showing a hybrid heat exchanger according to the present invention.

[0031] FIG. 2 is an exploded perspective view showing a hybrid heat exchanger according to a first embodiment of the present invention.

[0032] FIGS. 3A and FIGS. 3B are a front view and a side view with the header omitted from FIG. 2.

[0033] FIGS. 4a to 4d are perspective views showing the first to fourth plates of FIG. 2.

[0034] FIGS. 5 and FIGS. 6 are exploded perspective views showing a hybrid heat exchanger according to a second embodiment of the present invention.

[0035] FIGS. 7 and FIGS. 8 are exploded perspective views showing a hybrid heat exchanger according to a third embodiment of the present invention.

[0036] Figures 9a and 9b are enlarged perspective views of parts of Figure 7.

[0037] <Explanation of Symbols>

[0038] 10, 10', 910; heating element

[0039] 20, 20', 920; heat exchanger

[0040] 30, 40; header

[0041] 100, 100', 200, 200', 300, 300', 400, 400', 500, 600, 700, 800; plate

[0042] 110, 110', 210, 310, 310', 410; mixing part

[0043] 130, 130', 230, 330, 330', 430, 530, 730; Pin part

[0044] 150, 150', 250, 252', 350, 350', 450, 450', 550, 650, 750, 850; through hole

[0045] 170, 270, 370, 470; connecting euro

[0046] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to the description, the advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the attached drawings. Furthermore, it should be noted that the terms used in this specification are for describing the embodiments and are not intended to limit the present invention; that singular forms of such terms include plural forms unless specifically stated otherwise in the text, and that words indicating direction in the description are intended to aid in understanding the description and may change depending on the context.

[0047] A hybrid heat exchanger according to a preferred embodiment of the present invention will be described in detail below with reference to the attached drawings.

[0048] Hereinafter, A, indicated as the inflow of the first fluid based on the drawing, is referred to as the front end, A', indicated as the outflow of the first fluid, B, indicated as the inflow of the second fluid, is referred to as the first end, and B', indicated as the outflow of the second fluid, is referred to as the other end.

[0049] FIG. 1 is a perspective view showing a hybrid heat exchanger according to the present invention.

[0050] Referring to FIG. 1, the heat exchanger (20) according to the present invention includes a main body (25), a header (30, 40), and a heat transfer unit (not shown).

[0051] Headers (30, 40) are provided in the main body (25) and are places where a first fluid and a second fluid are introduced and discharged. For example, the first fluid (A) is introduced into the first header (30a) and discharged (A') into the second header (30b), and the second fluid (B) is introduced into the third header (40a) and discharged (B') into the fourth header (40b).

[0052] This configuration is illustrated based on the first embodiment described below, and headers (30, 40) may be provided accordingly for each embodiment.

[0053] The heating element is provided inside the main body (25), and heat exchange between the first and second fluids (A, B) is performed by the heating element.

[0054] Below, the first to third embodiments are described according to the shape of the heating element.

[0055] First embodiment

[0056] FIG. 2 is an exploded perspective view showing a hybrid heat exchanger according to a first embodiment of the present invention. FIG. 3a and FIG. 3b are a front view and a side view with the header omitted in FIG. 2, and FIG. 4a to FIG. 4d are perspective views showing the first to fourth plates of FIG. 2.

[0057] Referring to the drawings, the heating element (10) includes first to fourth plates (100, 200, 300, 400) in the shape of plates that are repeatedly stacked, and end plates (25a, 25b) are provided on the lowest plate and the highest plate, respectively.

[0058] Through holes (150, 450) may be formed in the following bottom plate and top plate by these end plates (25a, 25b), because fluid cannot flow into the through holes (150, 450) by the end plates (25a, 25b).

[0059] And the lowest and uppermost plates with through holes (150, 450) formed therein are manufactured in the same way as the other plates, so there is no need to perform a separate process.

[0060] Although FIG. 2 describes an example in which the heat transfer unit (10) includes four plates (100, 200, 300, 400), it is not limited to this form, and as shown in FIG. 3a and FIG. 3b, four plates (100, 200, 300, 400) can be formed as one block (90), and a plurality of blocks (90) can be provided in the heat exchanger (20).

[0061] That is, the first to fourth plates (100, 200, 300, 400) are stacked sequentially, and the fourth plate (400) can be repeatedly stacked in order starting from the first plate (100).

[0062] FIG. 3a shows a connecting channel (170) formed by etching on the front surface of the first and second plates (100, 200) as shown in the enlarged view C, with the first header (30a) omitted, to allow the first fluid (A) to flow in.

[0063] FIG. 3b shows a state in which the first pin portion (130, 230) is provided on the other side of the first and second plates (100, 200) as shown in D, with the fourth header (40b) omitted so that the second fluid (B') can flow out.

[0064] The first plate (100) is provided on the lower end plate (25a) and is provided at the lowest part of the heating unit (10).

[0065] As shown in FIG. 4a, the first plate (100) includes a plurality of, for example, two first mixing sections (110; 110a, 110b) at the front and rear ends and a first pin section (130) provided between them.

[0066] The configuration of the first plate (110) may, as an example, consist of more first mixing sections (110) and first pin sections (130).

[0067] The first mixing section (110) includes a mixing area (111) provided at one end and the other end, respectively, and an etching area (115) provided between them.

[0068] First, the mixing area (111) is provided for mixing the incoming fluid, and as shown in E and G, a plurality of peak-shaped protrusions (111a) are provided.

[0069] Here, the protrusion (111a) is configured such that a plurality of fluid channels are formed in the direction of the protrusion, and is connected to each fluid channel of the etching area (115) to change the direction of flow of the incoming fluid, thereby allowing the fluid to be mixed.

[0070] And the mixing area (111) is provided with through holes (150a, 150b) to connect each mixing area (111).

[0071] That is, in the first mixing section (110a) of the front section, a mixing area (111) provided at one end has a through hole (150a) formed so that the fluid can flow upward, that is, to the mixing area of ​​the third plate (300).

[0072] In addition, as shown in the illustration, the mixing area (111) provided at the other end of the first mixing section (110b) at the rear end is expanded to G, and a through hole (150b) is formed so that fluid flowing from the mixing area of ​​the third plate (300) can flow into the mixing area (111) through the connecting channel (170c).

[0073] And each mixing area (111) is provided with a connecting passage (170a, 170b, 170c, 170d) in the part that contacts the fluid inflow and outflow portions and the through hole (150a, 150b).

[0074] That is, as shown in the illustration of the first mixing section (110a) at the front end, the mixing area (111) provided at the other end is expanded to E, and a connecting channel (170a) is provided in the part connected to the first header (30a), and a connecting channel (170b) is provided in the part in contact with the through hole (150a) at the mixing area (111) provided at the end end.

[0075] In addition, as illustrated in the drawing of the first mixing section (110b) at the rear end, the mixing area (111) provided at the other end is provided with a connecting channel (170c) in the part that contacts the through hole (150b), and the mixing area (111) provided at the one end is provided with a connecting channel (170d) in the part that connects to the second header (30b).

[0076] Next, the etching region (115) is formed by etching, and connects the mixing regions (111) at both ends.

[0077] That is, as shown in the flow arrow of the first fluid (A) in FIG. 2, when the first fluid (A) is introduced through the first header (30a), the fluid flows from the first mixing section (110a) at the front end to the mixing area (111) at the other end through the connecting channel (170a), and the fluid flows along the channel of the etching area (115) to the mixing area (111) at the front end.

[0078] Then, the first fluid (A) that flows through the through hole (150b) and the connecting channel (170c) flows into the mixing area (111) at the other end of the first mixing section (110b) at the rear end, and the fluid flows along the channel of the etching area (115) of the first mixing section (110b) at the rear end to the mixing area (111), and the first fluid flows out to the second header (30b) through the connecting channel (170d) (A').

[0079] The first pin section (130) is provided between a plurality of first mixing sections (110), and a flow path is formed by a bottom section (131) formed by etching the interior and a plurality of pins (135) provided on the bottom section (131).

[0080] As illustrated in Fig. 4a with an enlarged view of F, the first pin portion (130) includes a bottom portion (131) of the first plate (100) and a pin (135), wherein the height of the pin (135) is higher than the height of the first plate (100) and has a height that is inserted between the bottom portion (131) of the first plate (100) and the bottom portion (231) of the second plate (200).

[0081] That is, as illustrated in FIG. 3b, the first pin portion (130) is provided such that the corresponding first and second plates (100, 200) face each other, and is composed of the bottom portion (131) and pin (135) of the first plate (100) and the bottom portion (231) of the second plate (200).

[0082] This first pin section (130) is where the second fluid (B) flows from one end to the other, and when the second fluid (B) is introduced through the third header (40a), it flows through the first pin section (130) and then flows out through the fourth header (40b) (B').

[0083] The second plate (200) is provided between the first and third plates (100, 300) and is provided facing the first plate (100) in a configuration corresponding to it.

[0084] As shown in FIG. 2 and FIG. 4b, the second plate (200) is provided with a first mixing section (210) at each front and rear end, similar to the first plate (100), and includes a first pin section (230) provided between them.

[0085] FIG. 4b shows the back side of the second plate (200) of FIG. 2.

[0086] The first mixing section (210) and the first pin section (230) of the second plate (200) are of the same shape as the first mixing section (110) and the first pin section (130) of the first plate (100) described above, and the first and second plates (100, 200) are joined so as to face each other, so that fluid flows along the flow path between them.

[0087] That is, when the first fluid (A) flows into the connecting passage (170a, 270a) of the first and second plates (100, 200), it flows upward through the first mixing section (110, 210) of the front end and through the connecting passage (170b, 270b) and through hole (150a, 250a).

[0088] And the first fluid (A) flowing from the upper end flows into the first mixing section (110, 210) at the rear end through the through hole (150b, 250b) and the connecting channel (170c, 270c), and the first fluid flows out through the connecting channel (170d, 270d) at the rear end (A').

[0089] The third plate (300) includes a second mixing section (310) and a second pin section (330) that are arranged in an alternating manner with the first mixing section (110) and the first pin section (130) of the first plate (100).

[0090] As shown in FIG. 2 and FIG. 4c, the third plate (300) includes two second pin sections (330; 330a, 330b) at the front and rear ends and a second mixing section (310) provided between them.

[0091] The second mixing section (310) is a place through which the first fluid (A) that has flowed through the first and second plates (100, 200) described above passes. When fluid flows into the through hole (350a) of the second mixing section (310) of the third plate (300) through the through hole (150a, 250a) of the first and second plates (100, 200), the first fluid flows through the through channel (370a), the mixing area, the etching area, and the mixing area of ​​the second mixing section (310), and then flows out through the through channel (370b) and the through hole (350b).

[0092] The fluid that passes through the through hole (350b) flows again to the other end mixing area (111) of the first mixing section (110b) at the rear end of the first and second plates (100, 200).

[0093] And the second pin part (330) is composed of the bottom part (331) and pin (335) of the third plate (300) and the bottom part (431) of the fourth plate (400), just like the first pin part (130) described above.

[0094] This second pin section (330) is where the second fluid (B) flows from one end to the other, and when the second fluid (B) is introduced through the third header (40a), the second fluid is discharged through the second pin section (130) and the fourth header (40b) (B').

[0095] The fourth plate (400) is provided on the third plate (300) and is provided facing the third plate (300) in a configuration corresponding to the third plate (300).

[0096] Although FIG. 2 shows an upper end plate (25b) provided on the fourth plate (400), as shown in FIG. 3a and FIG. 3b, the first to fourth plates (100, 200, 300, 400) may be further provided to include a plurality of blocks (90).

[0097] As shown in FIG. 2 and FIG. 4d, the fourth plate (400) is provided with a second pin portion (430) at each front and rear end, similar to the third plate (300), and includes a second mixing portion (410) provided between them.

[0098] FIG. 4d shows the back side of the fourth plate (400) of FIG. 2.

[0099] The second mixing section (410) and the second pin section (430) of the fourth plate (400) are of the same shape as the second mixing section (310) and the second pin section (330) of the third plate (300) described above, and the third and fourth plates (300, 400) are joined facing each other so that fluid flows along the flow path between them.

[0100] That is, when the first fluid (A) flows into the through hole (350a, 450a) and connecting channel (370a, 470a) at one end of the third and fourth plates (300, 400), the first fluid (A) flows through the second mixing section (310, 410) and then through the connecting channel (370b, 470b) and through hole (350b, 450b) at the other end to the lower end, that is, the through hole (150b, 250b) of the first and second plates (100, 200).

[0101] The flow of the first fluid (A) and the second fluid (B) in the heat exchanger (20) according to the present embodiment as described above is summarized with reference to FIG. 2.

[0102] When the first fluid (A) flows in through the first header (30a), it rises to the third and fourth plates (300, 400) through the through hole via the first mixing section (110, 210) at the front end of the first and second plates (100, 200), descends to the first and second plates (100, 200) through the through hole via the second mixing section (310, 410) at the rear end of the third and fourth plates (300, 400), and flows out to the second header (30b) through the connecting channel via the first mixing section (110, 210) at the rear end of the first and second plates (100, 200) (A').

[0103] And when the second fluid (B) flows in through the third header (40a), the second fluid (B) flows into one end of the first pin portion (130, 230) of the first and second plates (100, 200) and one end of the second pin portion (330, 430) of the third and fourth plates (300, 400), and flows out to the fourth header (40b) through the other end of the first and second pin portions (130, 230, 330, 430) after passing through the first and second pin portions (130, 230, 330, 430) (B').

[0104] In this way, the direction of the first fluid (A) flowing through each mixing section (110, 210, 310, 410) and the direction of the second fluid (B) flowing through each fin section (130, 230, 330, 430) are opposite to each other, so that the heat exchange efficiency can be further improved.

[0105] 2nd embodiment

[0106] Next, a hybrid heat exchanger according to a second embodiment of the present invention will be described. FIGS. 5 and FIGS. 6 are exploded perspective views showing a hybrid heat exchanger according to a second embodiment of the present invention.

[0107] The hybrid heat exchanger (20') according to the second embodiment of the present invention is similar to the hybrid heat exchanger (20) according to the first embodiment described above, and is characterized in that through holes are provided on both sides of the mixing area, rather than on one side.

[0108] The description of the configuration identical to the first embodiment described above in the present invention is omitted.

[0109] Referring to FIG. 5, the hybrid heat exchanger (20') according to the present embodiment has a heat transfer section (10') that includes four plates (100', 200', 300', 400'), which are stacked sequentially.

[0110] The first plate (100') is provided on the lower end plate (25a) and is provided at the lowest part of the heating section (10'), and as shown in FIG. 6, includes two first mixing sections (110'; 110a', 110b') at the front and rear ends and a first pin section (130') provided between them.

[0111] The first mixing section (110') includes a mixing area (111') provided at one end and the other end, respectively, and an etching area (115') provided between them.

[0112] At this time, the mixing area (111') is provided with a through hole (150') to connect each mixing area (111'), and the through hole (150') is provided in all mixing areas (111').

[0113] That is, in the first embodiment, a through hole is provided in only one mixing area of ​​a single mixing unit, but in this embodiment, a through hole (150') is provided in both mixing areas (111') of two mixing areas (111') provided in a single mixing unit (110').

[0114] As a result, the first fluid (A) introduced into the first plate (100') can flow directly upward through each through hole (150') of the two mixing areas (111'), as indicated by the arrow in FIG. 5.

[0115] And each mixing area (111') is provided with a connecting channel (170') in the part that contacts the fluid inflow and outflow portions and the through hole (150').

[0116] In addition, the first pin section (130') is provided between the first mixing section (110'), and the second fluid (B) is introduced into one end and discharged into the other end (B').

[0117] The second plate (200') is provided between the first and third plates (100', 300') and is provided facing the first plate (100') in a configuration corresponding to it.

[0118] In this embodiment, the second plate (200') has through holes (250') formed on both sides in all mixing areas, just like the first plate (100'), so that the first fluid (A) introduced flows upward and the first fluid (A) passing through the third and fourth plates (300', 400') flows downward.

[0119] The third plate (300') includes a second mixing section (310') and a second pin section (330') that are arranged in an alternating manner with the first mixing section (110') and the first pin section (130') of the first plate (100').

[0120] That is, the second pin portion (330') is provided at the front and rear ends of the third plate (300'), and the second mixing portion (310') is provided between them.

[0121] In this embodiment, the third plate (300') has through holes (350') formed on both sides in all mixing areas, just like the first and second plates (100', 200'), so that the first fluid (A) that has flowed through the connecting channel (170') and through holes (150', 250') via the aforementioned first and second plates (100', 200') flows in through the through holes (350') and flows downward through the through holes (350') via the second mixing section (310').

[0122] And the second fin section (330') has the second fluid (B) flowing into it at one end and flowing out at the other end (B').

[0123] The fourth plate (400') is provided on the third plate (300') and is provided facing the third plate (300') in a configuration corresponding to the third plate (300').

[0124] In this embodiment, the fourth plate (400') is formed with through holes (450') on both sides in all mixing areas, just like the third plate (300'). When the first fluid (A) flows into the through holes (350', 450') and the connecting passage (370') at the front end, the first fluid (A) flows through the second mixing section (310') and then through the connecting passage and through holes (350', 450') at the rear end to the through holes (150', 250') of the first and second plates (100', 200').

[0125] The flow of the first fluid (A) and the second fluid (B) in the heat exchanger (20') according to the present embodiment as described above is organized.

[0126] When the first fluid (A) is introduced through the first header (30a), it flows into the first mixing section (110a') at the front end of the first and second plates (100', 200'), and then flows to the mixing area (111') at the other end, passing through the etching area (115'), and then rises to the third and fourth plates (300', 400') through the through hole (150', 250') connected to the mixing area (111') at the other end and the through hole (150', 250') connected to the mixing area (111') at the first end.

[0127] Then, the first fluid (A) flows into the second mixing section (310') through the through holes (350', 450') of the third and fourth plates (300', 400'), passes through the mixing area and etching area of ​​each end, descends to the first and second plates (100', 200') through the through holes (350', 450') of the mixing area of ​​each end, and flows out to the second header (30b) at the rear end of the first and second plates (100', 200') (A').

[0128] Additionally, when the second fluid (B) flows in through the third header (40a), it flows into one end of the first pin portion (130') of the first and second plates (100', 200') and one end of the second pin portion (330') of the third and fourth plates (300', 400'), passes through the first and second pin portions (130', 230'), and flows out to the fourth header (40b) through the other end of the first and second pin portions (130', 230').

[0129] Third embodiment

[0130] Next, a hybrid heat exchanger according to a third embodiment of the present invention will be described. FIGS. 7 and FIGS. 8 are exploded perspective views showing a hybrid heat exchanger according to a third embodiment of the present invention, and FIGS. 9a and FIGS. 9b are partially enlarged perspective views of FIGS. 7.

[0131] The hybrid heat exchanger (920) according to the third embodiment of the present invention is similar to the hybrid heat exchangers (20, 20') according to the first and second embodiments described above, and is characterized by having no mixing area and only an etching area and a fin portion.

[0132] The description of the configuration identical to the first and second embodiments described above in the present invention is omitted.

[0133] Referring to FIGS. 7 and FIGS. 8, the hybrid heat exchanger (920) according to the present embodiment has a heat transfer section (910) that includes four plates (500, 600, 700, 800), which are stacked sequentially.

[0134] The fifth plate (500) is provided on the lower end plate (25a) and is provided at the lowest part of the heating section (910).

[0135] The fifth plate (500) includes a plurality of, for example, two first etching sections (510; 510a, 510b) at the front and rear ends, and a first pin section (530) provided between them.

[0136] The shape of the first etching portion (510) and the first pin portion (530) is illustrated in more detail in FIG. 9a.

[0137] Referring to the drawings, the first etching section (510) includes a flow path formed by etching, and a through hole (550) connecting each etching section is provided.

[0138] In detail, a first etching section (510a) at the front end has a through hole (550) formed at the rear end, and a first etching section (510b) at the rear end has a through hole (550) formed at the front end, and a first fluid (A) flows through these through holes (550).

[0139] That is, when the first fluid (A) is introduced through the first header (30a), the fluid is introduced along the flow path of the first etching section (510a) at the front end of the fifth plate (500) and flows upward through the through hole (550), and when the first fluid (A) that has passed through the seventh and eighth plates (700, 800) descends to the through hole (550) of the first etching section (510b) at the rear end of the fifth plate (500), it is discharged through the second header (30b) (A').

[0140] The first pin portion (530) is provided between a plurality of first etching portions (510), and a flow path is formed by a bottom portion (531) formed by etching the interior and a plurality of pins (535) provided on the bottom portion (531).

[0141] The first pin portion (530) is provided with corresponding fifth and sixth plates (500, 600) facing each other, and is composed of the bottom portion (531) and pin (535) of the fifth plate (500) and the bottom portion (631) of the sixth plate (600).

[0142] This first pin section (530) is where the second fluid (B) flows from one end to the other, and when the second fluid (B) is introduced through the third header (40a), it flows through the first pin section (530) and exits through the fourth header (40b) (B').

[0143] The sixth plate (600) is provided between the fifth and seventh plates (500, 700) and is provided facing the fifth plate (500) in a configuration corresponding to it.

[0144] The sixth plate (600), like the fifth plate (500), is provided with a through hole (650) connecting each first etching section in the first etching section, so that the first fluid (A) introduced flows upward and the first fluid (A) passing through the seventh and eighth plates (700, 800) flows downward.

[0145] The seventh plate (700) includes a second etching section (710) and a second pin section (730) that are arranged in an alternating manner with the first etching section (510) and the first pin section (530) of the fifth plate (500).

[0146] The shape of the second etching portion (710) and the second pin portion (730) is illustrated in more detail in FIG. 9b.

[0147] Referring to the drawings, the second etching section (710) is provided between a plurality of second pin sections (730), and, like the first etching section (510), includes a flow path formed by etching, and is provided with a through hole (750) connecting each etching section.

[0148] That is, the second etching section (710) has through holes (740) formed at the front and rear ends, respectively.

[0149] This seventh plate (700) is a place through which the first fluid (A) that has flowed through the aforementioned fifth and sixth plates (500, 600) passes. The first fluid (A) is introduced into the second etching section (710) of the seventh plate (700) through the through holes (550, 650) of the fifth and sixth plates (500, 600) and the through hole (750) at the front end of the seventh plate (700), and the first fluid (A) descends through the through hole (750) at the rear end of the seventh plate (700), passes through the through hole (650, 550) to the first etching section (510b) at the rear end of the fifth and sixth plates (500, 600), and is discharged through the second header (30b) (A').

[0150] And the second pin part (730) is composed of the bottom part (731) of the seventh plate (700), the pin (735), and the bottom part (831) of the eighth plate (800), just like the first pin part (530).

[0151] In this second pin section (730), the second fluid (B) flows in at one end and flows out at the other end (B').

[0152] The eighth plate (800) is provided on the seventh plate (700) and is provided facing the seventh plate (700) in a configuration corresponding to the seventh plate (700).

[0153] The eighth plate (800), like the seventh plate (700), is provided with through holes (850) at the front and rear ends of the second etching section, so that the first fluid (A) introduced through the through hole (850) at the front end flows downward through the flow path of the second etching section and through the through hole (850) at the rear end.

[0154] The flow of the first fluid (A) and the second fluid (B) in the heat exchanger (920) according to the present embodiment as described above is organized.

[0155] When the first fluid (A) is introduced through the first header (30a), it flows into the first etching section (510a) at the front end of the fifth and sixth plates (500, 600), and rises to the seventh and eighth plates (700, 800) through the through hole (550) provided at the rear end of the first etching section (510a) at the front end.

[0156] And fluid flows into the second etching section (710) through the through holes (750, 850) of the 7th and 8th plates (700, 800), that is, through the through holes (750, 850) provided at the front end of the second etching section (710), and passes through the second etching section (710) and descends through the through holes (750, 850) provided at the rear end of the second etching section (710).

[0157] Then, a first fluid (A) is introduced through a through hole (550, 650) provided at the front end of the first etching section (510b) at the rear end of the fifth and sixth plates (500, 600), and flows out to the second header (30b) through the flow path of the first etching section (510b) at the rear end (A').

[0158] Additionally, when the second fluid (B) is introduced through the third header (40a), the second fluid (B) is introduced through one end of the first pin portion (530) of the fifth and sixth plates (500, 600) and one end of the second pin portion (730) of the seventh and eighth plates (700, 800), and flows out to the fourth header (40b) through the other end of the first and second pin portions (530, 730) after passing through the first and second pin portions (530, 730) (B').

[0159] The foregoing description is merely an illustrative explanation of the technical concept of the present invention, and those skilled in the art to which the present invention pertains will be able to make various modifications, changes, and substitutions within the scope of the essential characteristics of the present invention. Furthermore, as described above, the embodiments disclosed in the present invention and the accompanying drawings are intended to explain, not limit, the technical concept of the present invention, and the scope of the technical concept of the present invention is not limited by such embodiments and accompanying drawings. The scope of protection of the present invention shall be interpreted by the claims below, and all technical concepts within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention.

Claims

1. A heat exchanger comprising a main body, a header provided in the main body through which a first fluid and a second fluid flow in and out, and a heat transfer section provided inside the main body, wherein a flow path is formed to allow heat exchange between the first and second fluids to take place, The above-mentioned heating element comprises first to fourth plates in the shape of plates that are repeatedly stacked, The first plate above is, It includes a plurality of first mixing sections, each comprising a mixing section formed at one end and the other end respectively for mixing an incoming fluid and an etching section in which a flow path is formed by etching between the mixing sections, and a first pin section provided between the plurality of first mixing sections, wherein the bottom section is formed by etching the interior and a flow path is formed by a plurality of pins provided on the bottom section. The above third plate is, It includes a second mixing part and a second pin part arranged alternately with the first mixing part and the first pin part of the first plate, and The second plate above is, It is provided between the first and third plates, and is provided facing each other with a configuration corresponding to the first plate, and The above-mentioned fourth plate is, It is provided on the third plate, and is provided facing each other with a configuration corresponding to the third plate, and A through hole formed at one or both ends of each mixing area connecting the above mixing areas, and a connecting flow path further provided at the portions of fluid inflow and outflow in each mixing area and the portions in contact with the through hole, The first fluid flows into the header at the front end, passes through the first and second plates to the third and fourth plates, flows through the third and fourth plates to the first and second plates, and flows out to the header at the rear end. A hybrid heat exchanger characterized in that the second fluid is introduced into one end of a header and flows out through the first and second fin sections to the other end of a header.

2. In Paragraph 1, The above mixing area is, A hybrid heat exchanger characterized by having a plurality of protrusions connected to each corresponding flow path of the above-mentioned etching region.

3. In Paragraph 1, The above first pin part is, It is composed of the bottom portion of the first plate and a pin, and the bottom portion of the second plate, and The above second pin part is, A hybrid heat exchanger characterized by being composed of the bottom portion of the third plate and the fin, and the bottom portion of the fourth plate.

4. A heat exchanger comprising a main body, a header provided in the main body through which a first fluid and a second fluid flow in and out, and a heat transfer section provided inside the main body, wherein a flow path is formed to allow heat exchange between the first and second fluids to take place, The above-mentioned heating element includes plate-shaped 5th to 8th plates that are repeatedly stacked, The above fifth plate is, It includes a plurality of first etching sections comprising a flow path formed by etching, a bottom section formed by etching the interior thereof between the plurality of first etching sections, and a first pin section having a flow path formed by a plurality of pins provided in the bottom section. The above seventh plate is, It includes a second etching part and a second pin part arranged alternately with the first etching part and the first pin part of the fifth plate, and The above-mentioned sixth plate is, It is provided between the 5th and 7th plates, and is provided facing each other with a configuration corresponding to the 1st plate, and The above eighth plate is, It is provided on the seventh plate, and is provided facing each other with a configuration corresponding to the seventh plate, and A through hole connecting each of the above etching sections is further provided, and The first fluid flows into the header at the front end, passes through the fifth and sixth plates to the seventh and eighth plates, flows through the seventh and eighth plates to the fifth and sixth plates, and flows out to the header at the rear end. A hybrid heat exchanger characterized in that the second fluid is introduced into one end of a header and flows out through the first and second fin sections to the other end of a header.

5. In Paragraph 4, The above first pin part is, It is composed of the bottom part of the fifth plate and a pin, and the bottom part of the sixth plate, and The above second pin part is, A hybrid heat exchanger characterized by being composed of the bottom portion of the seventh plate and the fin, and the bottom portion of the seventh plate.

Images