Plate-type heat exchanger

Abstract

The present invention relates to a plate-type heat exchanger and, more specifically, to a plate-type heat exchanger having a louver fin applied thereto so as to more efficiently guide the flow of a heat exchange fluid. The plate-type heat exchanger of the present invention is advantageous in that same includes two or more direction-changing louvers for causing a cooling fluid to flow from an inlet to an outlet or a dead zone while changing the direction of the cooling fluid, thereby preventing the cooling fluid from being biased to only one side.

Description

Plate heat exchanger

[0001] The present invention relates to a plate heat exchanger, and more specifically, to a plate heat exchanger to which louver fins are applied to guide the flow of fluid more efficiently.

[0002] Generally, plate heat exchangers applied to vehicles typically perform heat exchange by introducing two types of heat exchange media into the interior. The inlet and outlet ports for the heat exchange media are located at the corners of the upper plate to consider flow distribution and heat transfer performance. Additionally, considering assembly and manufacturability, it is common to configure the inlet and outlet ports on one side.

[0003] The inner fins used in such plate heat exchangers are formed by processing thin-film fin members to maximize heat exchange efficiency. However, in conventional plate heat exchangers, inner fins were placed only in areas excluding the inlet and outlet; to compensate for the resulting structural defects, additional structures such as bulkheads for durability were present in the inlet and outlet areas. Consequently, there was a problem in that the flowable width on the inlet side and the flowable width on the outlet side were significantly reduced compared to the total flowable width, leading to a decrease in fluid flow efficiency.

[0004] In addition, in the case of conventional plate heat exchangers, the cooling fluid does not flow over the entire surface area of ​​the plate but is concentrated on one side along the direction of formation of the inner fins, resulting in a dead zone, which in turn lowers the heat exchange efficiency and makes flow control difficult.

[0005] [Prior Art Literature]

[0006] [Patent Literature]

[0007] (Patent Document 1) Republic of Korea Registered Patent 10-1977797 "Heat exchanger"

[0008] The present invention has been devised to solve the above-mentioned problems, and the objective of the present invention is to provide a plate heat exchanger that allows a cooling fluid to flow from an inlet to an outlet or a dead zone, while preventing the cooling fluid from being concentrated on only one side by including two or more direction-changing louvers that change the direction of the cooling fluid.

[0009] In addition, by applying shape-retaining members to the inlet and outlet areas, the louver fins can be prevented from being destroyed even when the inlet and outlet are perforated, and accordingly, the fins are inserted across the entire surface of the plate, thereby providing a plate heat exchanger that can maintain durability without the need for a separate structure for enhancing durability.

[0010] In order to solve the problem described above, a plate heat exchanger according to one embodiment of the present invention is characterized by comprising: a plate through which an inlet for heat exchange fluid is introduced and an outlet for heat exchange fluid is discharged; louver fins stacked between the plates; and a shape-maintaining member provided in a fluid inlet / outlet area that includes the area where the inlet and the outlet are formed, located at both ends of the plate in a predetermined width direction.

[0011] In addition, the shape retaining member is characterized by including an offset pin having one side and the other side formed in a stepped curve.

[0012] In addition, the shape-maintaining member is characterized by including a flat plate portion having one surface and the other surface formed flat.

[0013] In addition, the shape retaining portion is characterized by including at least one through hole perforated in the flat portion.

[0014] In addition, the flat plate is formed extending in the width direction of the plate and is formed perpendicular to the length direction of the plate, which is perpendicular to the width direction of the plate, and the holes are formed spaced apart at least two places with respect to the length direction of the plate, and each through hole spaced apart with respect to the length direction of the plate is formed such that a predetermined area overlaps with respect to the length direction of the plate.

[0015] In addition, the through hole is formed in the fluid entry / exit area, but is characterized by being formed outside the area where the inlet and outlet are formed.

[0016] Additionally, the louver fin is formed by cutting and bending the louver fin and includes at least one linear moving part comprising a first louver having a flat flow surface in contact with a heat exchange fluid, and at least one second louver having a flow surface in contact with a heat exchange fluid bent at a predetermined angle, formed by cutting and bending the louver fin and includes a direction changing part having one end and the other end in contact with the linear moving part, and is characterized by having two or more direction changing parts.

[0017] In addition, the inlet and the outlet are located diagonally opposite each other, and two direction changing parts are provided and arranged spaced apart from each other at a predetermined distance in one direction.

[0018] In addition, the first louver of the linear moving part adjacent to the inlet is formed by bending so that the heat exchange fluid moves diagonally from the inlet side, and the first louver of the linear moving part adjacent to the outlet is formed by bending so that the heat exchange fluid moves diagonally toward the outlet side.

[0019] In addition, the first louver of each linear moving part adjacent to the inlet is formed by bending so that the heat exchange fluid moves diagonally from the vertex side of the plate where the inlet is not formed, and the first louver of the linear moving part adjacent to the outlet is formed by bending so that the heat exchange fluid moves diagonally toward the vertex side of the plate where the outlet is not formed.

[0020] In addition, the inlet and the outlet are located in a straight line with each other, and two direction changing parts are provided and arranged spaced apart from each other at a predetermined distance in one direction.

[0021] In addition, the inlet and the outlet are located in a straight line with each other, and three direction changing parts are provided and arranged at a predetermined distance from each other in one direction.

[0022] In addition, the first louver of the linear moving part adjacent to the inlet is formed by bending so that the heat exchange fluid moves diagonally from the inlet side, and the first louver of the linear moving part adjacent to the outlet is formed by bending so that the heat exchange fluid moves diagonally toward the outlet side.

[0023] In addition, the first louver of each linear moving part adjacent to the inlet is formed by bending so that the heat exchange fluid moves diagonally from the vertex side of the plate where the inlet is not formed, and the first louver of the linear moving part adjacent to the outlet is formed by bending so that the heat exchange fluid moves diagonally toward the vertex side of the plate where the outlet is not formed.

[0024] In addition, the inlet and the outlet are located diagonally opposite each other, and three direction changers are provided and arranged spaced apart from each other in one direction.

[0025] The plate heat exchanger of the present invention, configured as described above, allows the cooling fluid to flow from the inlet to the outlet or dead zone, and by including two or more direction-changing louvers that change the direction of the cooling fluid, it has the effect of preventing the cooling fluid from being concentrated on only one side.

[0026] In addition, by applying shape-retaining elements to the inlet and outlet areas, the louver pins can be prevented from being destroyed even when the inlet and outlet are perforated. Consequently, since the pins are inserted across the entire surface of the plate, durability can be maintained without the need for separate structures to enhance durability.

[0027] FIG. 1 is a schematic diagram illustrating a first embodiment of a plate heat exchanger of the present invention.

[0028] FIG. 2 is a schematic diagram illustrating a first application example of a first embodiment of a plate heat exchanger of the present invention.

[0029] FIG. 3 is a schematic diagram illustrating a second application example of a first embodiment of a plate heat exchanger of the present invention.

[0030] FIG. 4 is a schematic diagram illustrating a third application example of a first embodiment of a plate heat exchanger of the present invention.

[0031] FIG. 5 is a schematic diagram illustrating a second embodiment of the plate heat exchanger of the present invention.

[0032] FIG. 6 is a schematic diagram illustrating a first application example of a second embodiment of a plate heat exchanger of the present invention.

[0033] FIG. 7 is a schematic diagram illustrating a second application example of a second embodiment of the plate heat exchanger of the present invention.

[0034] FIG. 8 is a schematic diagram illustrating a third application example of a second embodiment of a plate heat exchanger of the present invention.

[0035] FIG. 9 is a schematic diagram illustrating a first embodiment of the shape-maintaining part of the present invention.

[0036] FIG. 10 is a schematic diagram illustrating a second embodiment of the shape-maintaining part of the present invention.

[0037] Hereinafter, the technical concept of the present invention will be explained in more detail using the attached drawings. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, and should be interpreted in a meaning and concept consistent with the technical concept of the present invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention.

[0038] Hereinafter, the basic configuration and a first embodiment of the plate heat exchanger (1000) of the present invention will be described in more detail with reference to FIG. 1.

[0039] The plate heat exchanger (1000) of the present invention may include a plate (100) having an inlet (110) and an outlet (120) formed therein, and a louver fin (200) having a plurality of louvers formed therein. The plate heat exchanger (1000) of the present invention may include an inlet (110) and an outlet (120) formed through a predetermined location, and the outlet (120) may be formed at a predetermined distance from the inlet (110). A heat exchange fluid may be introduced into or discharged from each plate (100) of the plate heat exchanger (1000) through the inlet (110) and the outlet (120).

[0040] Additionally, the louver pin (200) of the present invention may be composed of a thin sheet material and may include a plurality of louvers formed by cutting and bending the surface of the thin sheet material. More specifically, the louver pin (200) may include a linear movement part (210) comprising at least one first louver (211) having a flat flow surface in contact with the heat exchange fluid, and a direction change part (220) comprising at least one second louver (221) having a flow surface in contact with the heat exchange fluid bent at a predetermined angle, with one end and the other end in contact with the linear movement part (210). At this time, two or more direction change parts (220) may be formed to change the direction of movement of the heat exchange fluid two or more times.

[0041] In the first embodiment of the plate heat exchanger (1000) of the present invention, two direction changing members (220) are provided and may be arranged spaced apart from each other in one direction. By changing the direction of movement of the heat exchange fluid two or more times in this way, it is possible to prevent the heat exchange fluid from being concentrated in only one side and to increase the distance over which the heat exchange fluid flows, thereby increasing the heat exchange efficiency.

[0042] Additionally, the louver pin (200) may further include a shape-maintaining part (230) which is provided in an area including an inlet (110) and an outlet (120) formed therein and has one end in contact with a linear moving part (210). The shape-maintaining part (230) may include an offset pin (231) in which one side and the other side are formed in a stepped curve. By including the shape-maintaining member (230) in this manner, when the plate (100) and the louver pin (200) are each perforated to form an inlet (110) and an outlet (120), the shape of the offset pin (231) is positioned in the fluid inlet / outlet area (130) that includes the inlet (110) and the outlet (120), thereby allowing fluid to be distributed in the space near the inlet (110) and the outlet (120). Additionally, the upper and lower plates (100) of the area corresponding to the space near the inlet (110) and the outlet (120) can be held, thereby increasing structural stability such as internal pressure. At this time, the fluid inlet / outlet area (130) may be located at both ends in the width direction of the plate (100).

[0043] Hereinafter, an application example of the first embodiment of the present invention will be described in more detail with reference to FIGS. 2 to 4.

[0044] In the first embodiment of the present invention, two or more direction changing sections (220) are formed so that the direction of movement of the heat exchange fluid can be changed two or more times. More specifically, in the first application example of the first embodiment of the present invention shown in FIG. 2, the inlet (110) and the outlet (120) may be located diagonally opposite each other and may be located on the edge vertex side of the plate (100). The first louver (211) of the linear moving section (210) adjacent to the inlet (110) is formed by bending so that the heat exchange fluid moves diagonally from the side of the inlet (110), and the first louver (211) of the linear moving section (210) adjacent to the outlet (120) may be formed by bending so that the heat exchange fluid moves diagonally toward the side of the outlet (120).

[0045] At this time, the first louver (211) of each linear moving part (210) adjacent to the inlet (110) is formed by bending so that the heat exchange fluid moves diagonally from the vertex side of the plate (100) where the inlet (110) is not formed, and the first louver (211) of the linear moving part (210) adjacent to the outlet (120) can be formed by bending so that the heat exchange fluid moves diagonally toward the vertex side of the plate (100) where the outlet (120) is not formed. By forming the louver pin (200) in such a shape, the heat exchange fluid can flow by reciprocating in the Y-axis direction throughout the plate (100) without being concentrated to one side, and the flow can be guided from the inlet (110) toward the outlet (120).

[0046] Additionally, in the second application example of the first embodiment of the present invention illustrated in FIG. 3, the inlet (110) and the outlet (120) may be located diagonally opposite each other and may be located on the edge vertex side of the plate (100). The first louver (211) of each linear moving part (210) adjacent to the inlet (110) may be bent so that the heat exchange fluid moves diagonally from the vertex side of the plate (100) where the inlet (110) is not formed, and the first louver (211) of the linear moving part (210) adjacent to the outlet (120) may be bent so that the heat exchange fluid moves diagonally toward the vertex side of the plate (100) where the outlet (120) is not formed. By forming the louver fin (200) in this shape, the heat exchange fluid is allowed to flow by reciprocating along the entire plate (100) in the Y-axis direction without being concentrated on one side, and the heat exchange fluid is directed toward the dead zone (D) where the inlet (110) and outlet (120) are not formed, thereby intentionally increasing the residence time of the heat exchange fluid on the plate (100) and increasing the heat exchange efficiency.

[0047] In addition, in the third application example of the first embodiment of the present invention illustrated in FIG. 4, the inlet (110) and the outlet (120) are located in a straight line with each other, and two direction changing parts (220) are provided and can be arranged spaced apart from each other by a predetermined distance in one direction (the X-axis direction of FIG. 4). That is, the fluid flowing in from the inlet (110) side can be intentionally guided toward the dead zone (D) side rather than the outlet (120) side. Alternatively, the heat exchange fluid that was staying on the side other than the inlet (110) can be guided toward the outlet (120) side. By forming the louver fin (200) in this shape, the heat exchange fluid is allowed to flow by reciprocating along the entire plate (100) in the Y-axis direction without being concentrated on one side, and the heat exchange fluid is directed toward the dead zone (D) where the inlet (110) and outlet (120) are not formed, thereby intentionally increasing the residence time of the heat exchange fluid on the plate (100) and increasing the heat exchange efficiency.

[0048] Hereinafter, a second embodiment of the present invention and an example of its application will be described in more detail with reference to FIGS. 5 to 8.

[0049] As illustrated in FIG. 5, the plate heat exchanger (1000) of the present invention may include a plate (100) having an inlet (110) and an outlet (120) formed therein, and a louver fin (200) provided on the plate (100). The louver fin (200) may include at least one linear moving part (210) and a direction changing part (220). Additionally, the plate heat exchanger (1000) may further include a shape maintaining part (230) provided in an area including the area where the inlet (110) and the outlet (120) are formed, with one end in contact with the linear moving part (210). The shape maintaining part (230) may include an offset fin (231) having one side and the other side formed in a stepped curve.

[0050] In the second embodiment of the plate heat exchanger (1000) of the present invention, three direction changing sections (220) are provided and may be arranged spaced apart from each other in one direction. More specifically, in the first application example of the second embodiment of the present invention shown in FIG. 6, the inlet (110) and the outlet (120) may be located in a straight line with each other and may be located at the edge vertex side of the plate (100). The first louver (211) of the linear moving section (210) adjacent to the inlet (110) may be bent so that the heat exchange fluid moves diagonally from the inlet (110) side, and the first louver (211) of the linear moving section (210) adjacent to the outlet (120) may be bent so that the heat exchange fluid moves diagonally toward the outlet (120) side. By forming the louver fin (200) in this shape, the heat exchange fluid can flow by reciprocating along the entire plate (100) in the Y-axis direction without being pushed to one side, and the flow can be guided from the inlet (110) to the outlet (120).

[0051] In addition, in the second application example of the second embodiment of the present invention illustrated in FIG. 7, the inlet (110) and the outlet (120) may be located in a straight line with each other and may be located on the edge vertex side of the plate (100). The first louver (211) of each linear moving part (210) adjacent to the inlet (110) may be bent so that the heat exchange fluid moves diagonally from the vertex side of the plate (100) where the inlet (110) is not formed, and the first louver (211) of the linear moving part (210) adjacent to the outlet (120) may be bent so that the heat exchange fluid moves diagonally toward the vertex side of the plate (100) where the outlet (120) is not formed. By forming the louver fin (200) in this shape, the heat exchange fluid is allowed to flow by reciprocating along the entire plate (100) in the Y-axis direction without being concentrated on one side, and the heat exchange fluid is directed toward the dead zone (D) where the inlet (110) and outlet (120) are not formed, thereby intentionally increasing the residence time of the heat exchange fluid on the plate (100) and increasing the heat exchange efficiency.

[0052] In the third application example of the second embodiment of the present invention illustrated in FIG. 8, the inlet (110) and the outlet (120) may be positioned diagonally opposite each other and may be located at the edge vertex side of the plate (100). At this time, three direction changing parts (220) are provided and may be arranged spaced apart from each other in one direction (the X-axis direction of FIG. 8). That is, the fluid flowing in from the inlet (110) side may be intentionally guided toward the dead zone (D) side rather than the outlet (120) side. Alternatively, the heat exchange fluid that was staying on the side other than the inlet (110) may be guided toward the outlet (120) side. By forming the louver fin (200) in this shape, the heat exchange fluid is allowed to flow by reciprocating along the entire plate (100) in the Y-axis direction without being concentrated on one side, and the heat exchange fluid is directed toward the dead zone (D) where the inlet (110) and outlet (120) are not formed, thereby intentionally increasing the residence time of the heat exchange fluid on the plate (100) and increasing the heat exchange efficiency.

[0053] Hereinafter, an embodiment of the shape-maintaining part (230) of the present invention will be described in more detail with reference to FIGS. 9 and 10.

[0054] In the first embodiment of the shape-maintaining part (230) illustrated in FIG. 9, the shape-maintaining part (230) may include a flat plate part (232) with one side and the other side formed flat. That is, the louver pin (200) located on the side of the inlet (110) and the outlet (120) may be in a thin plate state without any special processing. In this embodiment, the louver pin (200) may have a hole pre-drilled at a position corresponding to the inlet (110) and the outlet (120), after which the aforementioned linear movement part (210) and direction change part (220) may be processed and formed.

[0055] Additionally, in the second embodiment of the shape-maintaining part (230) illustrated in FIG. 10, the shape-maintaining part (230) may include at least one through hole (233) perforated in the flat plate part (232). At this time, the through hole (233) may be formed in an area other than the area where the inlet (110) and the outlet (120) are formed. More specifically, it was difficult to form a louver in the fluid inlet / outlet area (130) because the louver formed on the side could be damaged when forming the inlet (110) and the outlet (120). Therefore, a through hole (233) can be added to the flat plate part (232) of the fluid inlet / outlet area (130) to enable fluid flow in the fluid inlet / outlet area (130). By including the through hole (233) in this way, performance can be improved and costs can be reduced as there is no need to form a louver.

[0056] For example, the flat plate portion (232) is formed to extend in the width direction of the plate (100) and is formed perpendicular to the length direction of the plate (100), which is perpendicular to the width direction of the plate (100). Two or more through holes (233) are formed spaced apart with respect to the length direction of the plate (100), and each through hole (233) spaced apart with respect to the length direction of the plate (100) may be formed such that a predetermined area overlaps with respect to the length direction of the plate (100). Accordingly, a fluid passage can be formed within the fluid inlet / outlet area (130) through which fluid can flow, consisting of the through holes (233) and the flat plate portion (232). Accordingly, fluid flow is possible within the fluid inlet / outlet area (130), thereby increasing cooling performance.

[0057] The technical concept of the present invention should not be interpreted as being limited to the above-described embodiments. Not only is the scope of application diverse, but various modifications are possible at the level of a person skilled in the art without departing from the essence of the invention claimed in the claims. Accordingly, such improvements and modifications fall within the scope of protection of the present invention insofar as they are obvious to a person skilled in the art.

Claims

1. A plate having a through-hole formed therein for the inlet of a heat exchange fluid and an outlet for the discharge of a heat exchange fluid; Louver pins stacked between the above plates; and A plate heat exchanger characterized by including: a shape-maintaining member located at both ends in the width direction of the plate and provided in a fluid inlet / outlet area including a region where the inlet and the outlet are formed.

2. In Paragraph 1, The above shape retaining part is, A plate heat exchanger characterized by including offset fins having one side and the other side formed in a stepped curve.

3. In Paragraph 1, The above shape retaining part is, A plate heat exchanger characterized by including a flat plate portion having one side and the other side formed flat.

4. In Paragraph 3, The above shape retaining part is, A plate heat exchanger characterized by including at least one through hole perforated in the above-mentioned flat plate.

5. In Paragraph 4, The above-mentioned flat plate is, It is formed extending in the width direction of the plate and formed perpendicularly to the length direction of the plate, which is a direction perpendicular to the width direction of the plate, and The above hole is, Two or more are formed spaced apart based on the longitudinal direction of the above plate, and A plate-type heat exchanger characterized in that each of the through holes spaced apart along the longitudinal direction of the plate is formed such that a predetermined area overlaps with respect to the longitudinal direction of the plate.

6. In Paragraph 4, The above through hole is, Formed in the above fluid entry / exit area, A plate heat exchanger characterized by being formed in an area other than the region where the inlet and outlet are formed.

7. In Paragraph 1, The above-mentioned louver pin is, A linear moving part comprising at least one first louver formed by cutting and bending the above-mentioned louver fin, having a flat flow surface in contact with the heat exchange fluid, and It includes at least one second louver formed by cutting and bending the above louver fin, wherein the flow surface in contact with the heat exchange fluid is bent at a predetermined angle, and includes a direction changing part having one end and the other end in contact with the linear moving part. A plate heat exchanger characterized by having two or more of the above-mentioned direction changing parts.

8. In Paragraph 7, The above inlet and the above outlet are located diagonally opposite each other, The above-mentioned direction changing unit is provided in two units, and A plate heat exchanger characterized by being arranged at a predetermined distance from each other in one direction.

9. In Paragraph 8, The first louver of the linear moving part adjacent to the inlet is, It is formed by bending so that the heat exchange fluid moves diagonally from the inlet side, and The first louver of the linear moving part adjacent to the above discharge port is, A plate heat exchanger characterized by being formed by bending so that the heat exchange fluid moves in a diagonal direction toward the outlet side.

10. In Paragraph 8, The first louver of each of the linear moving parts adjacent to the inlet is, The above plate, where the inlet is not formed, is bent to allow the heat exchange fluid to move diagonally from the apex side, and The first louver of the linear moving part adjacent to the above discharge port is, A plate heat exchanger characterized by being formed by bending so that the heat exchange fluid moves in a diagonal direction toward the vertex side of the plate where the above-mentioned discharge port is not formed.

11. In Paragraph 7, The above inlet and the above outlet are located in a straight line with each other, The above-mentioned direction changing unit is provided in two units, and A plate heat exchanger characterized by being arranged at a predetermined distance from each other in one direction.

12. In Paragraph 7, The above inlet and the above outlet are located in a straight line with each other, The above-mentioned direction changing unit is equipped with three units, and A plate heat exchanger characterized by being arranged at a predetermined distance from each other in one direction.

13. In Paragraph 12, The first louver of the linear moving part adjacent to the inlet is, It is formed by bending so that the heat exchange fluid moves diagonally from the inlet side, and The first louver of the linear moving part adjacent to the above discharge port is, A plate heat exchanger characterized by being formed by bending so that the heat exchange fluid moves in a diagonal direction toward the outlet side.

14. In Paragraph 12, The first louver of each of the linear moving parts adjacent to the inlet is, The above plate, where the inlet is not formed, is bent to allow the heat exchange fluid to move diagonally from the apex side, and The first louver of the linear moving part adjacent to the above discharge port is, A plate heat exchanger characterized by being formed by bending so that the heat exchange fluid moves in a diagonal direction toward the vertex side of the plate where the above-mentioned discharge port is not formed.

15. In Paragraph 7, The above inlet and the above outlet are located diagonally opposite each other, The above-mentioned direction changing unit is equipped with three units, and A plate heat exchanger characterized by being arranged at a predetermined distance from each other in one direction.

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