Heat exchanger

Abstract

The present invention provides a heat exchanger comprising: a plurality of fins successively arrayed in one direction and each having therein a flow path for allowing a refrigerant to flow; and a pair of headers installed on both sides of the plurality of fins so as to communicate with the flow paths. Each of the plurality of fins has a first panel and a second panel that are coupled to each other, the first panel is provided with a plurality of first grooves recessed in the first panel and extending in a diagonal direction, the second panel is provided with a plurality of second grooves recessed in the second panel and extending in a diagonal direction, the first grooves and the second grooves have first communication portions at which the first and second grooves communicate with each other in intersecting directions at respective side ends, and have second communication portions at which the first and second grooves communicate with each other in parallel directions at the respective side ends.

Description

heat exchanger

[0001] The present invention relates to a heat exchanger, and more specifically, to a heat exchanger having a structure that improves performance by reducing distribution deviations between channels.

[0002] Generally, a heat exchanger can be used as a condenser or evaporator in a refrigeration cycle device consisting of a compressor, condenser, expansion mechanism, and evaporator. The heat exchanger can be installed in vehicles, refrigerators, or air conditioners, and can exchange heat between the refrigerant and the air.

[0003] There are various types, such as fin-tube heat exchangers and microchannel heat exchangers. A heat exchanger may include tubes through which refrigerant passes and headers connected to the tubes to distribute the refrigerant to the tubes.

[0004] In the case of a fin-tube type heat exchanger, a heat exchange fin and a tube through which the refrigerant passes can be combined. The fin-tube type heat exchanger may be configured such that each of a plurality of tubes having a tubular shape penetrates a plurality of fins having a plate shape, or the fins and tubes are formed integrally.

[0005] Air can pass between the fins and tubes of the above-mentioned fin-tube heat exchanger. As the air passes between the fins and tubes, it can exchange heat with the refrigerant flowing through the tubes.

[0006] Meanwhile, research on fin-tube heat exchangers is being conducted to improve issues regarding the airflow velocity or resistance of the air passing through the aforementioned fin-tube heat exchanger, and to increase the amount of heat exchanged and the heat exchange efficiency.

[0007] Patent Document 1 (Published Patent 10-2022-0113117) discloses a heat exchanger having a structure in which two fins are pressed and joined to form a refrigerant flow path while simultaneously forming fins to expand the heat transfer area with air, a structure in which a short tube array is arranged obliquely and two fins are arranged in an alternating arrangement, and a structure having a header integrated type or a header separately.

[0008] In Patent Document 1, the tubes are arranged in an alternating pattern with a structure that combines the upper and lower plate fins, so that the refrigerant is continuously mixed and air can flow along the tubes.

[0009] However, in the structure of Patent Document 1, as the size of the heat exchanger increases in the longitudinal direction, a phenomenon occurs where the refrigerant entering through the refrigerant inlet is distributed to each flow path and is concentrated towards the side closer to the inlet.

[0010] As a result, a problem occurred in which heat exchange efficiency decreased as the flow imbalance between the paths near and far from the refrigerant inlet increased.

[0011] Therefore, there is a demand for a structure that prevents the phenomenon of refrigerant shifting when the refrigerant entering through the refrigerant inlet is distributed to each path, and can reduce the flow imbalance between the paths close to the refrigerant inlet and the paths far from it.

[0012] The present invention has been devised to solve the above problems, and one objective of the present invention is to provide a heat exchanger with a structure that prevents the phenomenon of refrigerant shifting when the refrigerant entering through the refrigerant inlet is distributed to each flow path.

[0013] Another objective of the present invention is to provide a heat exchanger with a structure capable of reducing flow imbalance between a flow path near the refrigerant inlet and a flow path far from it.

[0014] Another objective of the present invention is to provide an integrated fin-tube heat exchanger with an asymmetric chevron shape that improves water flowability and enables uniform refrigerant distribution without the addition of a separate improved structure.

[0015] Another objective of the present invention is to provide a heat exchanger with a structure that increases the heat transfer surface area to increase the amount of heat exchange and heat exchange efficiency between the refrigerant and the air.

[0016] Another objective of the present invention is to provide a heat exchanger with a structure that reduces the pressure loss of air passing through the heat exchanger.

[0017] To solve the above problem, the heat exchanger of the present invention comprises: a plurality of fins arranged continuously in one direction, each fin having a flow path that allows a refrigerant to flow inside; and a pair of headers installed on both sides of the plurality of fins to communicate with the flow path, wherein each of the plurality of fins is formed to combine a first panel and a second panel, the first panel is provided with a plurality of first grooves that are concave and extend diagonally from the first panel, and the second panel is provided with a plurality of second grooves that are concave and extend diagonally from the second panel, and the first groove has a first communication portion that communicates with the second groove in a direction that intersects each other at the side ends, and the first groove has a second communication portion that communicates with the second groove in a direction parallel to each other at the side ends.

[0018] As a result, when the refrigerant entering through the refrigerant inlet is distributed to each path, the phenomenon of the refrigerant shifting can be prevented.

[0019] In addition, it can reduce the flow imbalance between the path near and far from the refrigerant inlet.

[0020] The first communication part and the second communication part are arranged alternately with each other.

[0021] According to this structure, refrigerant shifting and flow imbalance can be further mitigated.

[0022] The first groove may include a first area groove portion arranged diagonally in a first area of ​​the first panel; and a second area groove portion arranged diagonally intersecting the first area groove portion in a second area of ​​the first panel.

[0023] The first area groove portion can be arranged within the first panel so as not to come into contact with the second area groove portion and to be spaced apart.

[0024] The second groove may include a third area groove portion arranged diagonally in a third area facing the first area in the second panel; and a fourth area groove portion arranged diagonally intersecting the third area groove portion in a fourth area facing the second area.

[0025] The first area groove may have a portion that is connected to intersect with the third area groove.

[0026] The first area groove and the third area groove may be provided such that their respective grooves contact each other at four points.

[0027] The third area groove portion can be arranged so as to be spaced apart from the fourth area groove portion within the second panel without contacting it.

[0028] The first area groove may have a portion that is connected to the fourth area groove so as to be parallel to each other.

[0029] The above second area groove may have a portion that is connected to the above third area groove so as to be parallel to each other.

[0030] According to this structure, when the refrigerant entering through the refrigerant inlet is distributed to each flow path, the phenomenon of the refrigerant shifting can be prevented.

[0031] In addition, the heat exchanger of the present invention can reduce flow imbalance between the flow path near the refrigerant inlet and the flow path far from it.

[0032] According to one example related to the present invention, the first groove may include a first long groove portion extending by a predetermined length and a first short groove portion extending by a length smaller than the first long groove portion, and the second groove may include a second long groove portion extending by a predetermined length and a second short groove portion extending by a length smaller than the second long groove portion.

[0033] The above first groove section and first stage groove section may be arranged alternately, and the above second groove section and second stage groove section may be arranged alternately.

[0034] The first groove portion may be positioned so as to be longer than the midpoint between both sides of the first panel from one side of the first panel, and the first groove portion may be positioned so as to be shorter than the midpoint between both sides of the first panel from one side of the first panel, and the second groove portion may be positioned so as to be longer than the midpoint between both sides of the second panel from one side of the second panel, and the second groove portion may be positioned so as to be shorter than the midpoint between both sides of the second panel from one side of the second panel.

[0035] The refrigerant can flow uniformly along the first groove in the first region groove and the second groove in the fourth region groove, which are arranged parallel to each other. Likewise, the refrigerant can flow uniformly along the first groove in the second region groove and the second groove in the third region groove, which are arranged parallel to each other. That is, the refrigerant can flow from the first region to the second region through the fourth region, and the refrigerant can flow from the third region to the fourth region through the second region.

[0036] To solve the above problem, the heat exchanger of the present invention comprises: a plurality of fins arranged continuously in one direction, each fin having a flow path that allows a refrigerant to flow on the inside; and a pair of headers installed on both sides of the plurality of fins to communicate with the flow path, wherein each of the plurality of fins is formed to combine a first panel and a second panel, the first panel is provided with a plurality of first grooves formed by being concave and extending diagonally in the first panel, and the second panel is provided with a plurality of second grooves formed by being concave and extending diagonally in the second panel, and the first groove comprises a first area groove portion arranged diagonally in a first area (left side) of the first panel; In the second area (right) of the first panel, a second area groove portion is arranged diagonally intersecting the first area groove portion, and the second groove comprises a third area groove portion arranged diagonally in the third area facing the first area (left) in the second panel; In a fourth area facing the second area (right), a fourth area groove is arranged diagonally intersecting the third area groove, wherein the first groove includes a first long groove extending by a predetermined length and a first short groove extending by a length shorter than the first long groove, and the second groove includes a second long groove extending by a predetermined length and a second short groove extending by a length shorter than the second long groove, wherein one end of the first long groove within the first area groove is in contact with one end of the second long groove within the fourth area groove, and one end of the first long groove within the second area groove is in contact with one end of the second long groove within the third area groove.

[0037] As a result, the refrigerant can flow uniformly along the first groove in the first region groove and the second groove in the fourth region groove, which are arranged parallel to each other. Likewise, the refrigerant can flow uniformly along the first groove in the second region groove and the second groove in the third region groove, which are arranged parallel to each other. That is, the refrigerant can flow from the first region to the second region through the fourth region, and the refrigerant can flow from the third region to the fourth region through the second region.

[0038] The first groove portion within the first area groove portion is arranged so as to be parallel to the second groove portion within the fourth area groove portion, and the first groove portion within the second area groove portion may be arranged so as to be parallel to the second groove portion within the third area groove portion.

[0039] As a result, the refrigerant can flow uniformly along the first groove in the first region groove and the second groove in the fourth region groove, which are arranged parallel to each other. Likewise, the refrigerant can flow uniformly along the first groove in the second region groove and the second groove in the third region groove, which are arranged parallel to each other. That is, the refrigerant can flow from the first region to the second region through the fourth region, and the refrigerant can flow from the third region to the fourth region through the second region.

[0040] The first groove may have a first connecting part that communicates with the second groove in a direction that intersects each other at the side ends, and the first groove may have a second connecting part that communicates with the second groove in a direction parallel to each other at the side ends.

[0041] The present invention enables the first groove to have a first connecting part and a second connecting part, thereby securing a disconnected structure to improve water flow while simultaneously enabling the uniformization of the refrigerant in an asymmetrical shape.

[0042] The first area groove portion can be arranged within the first panel so as not to come into contact with the second area groove portion and to be spaced apart.

[0043] The first area groove may have a portion that is connected to intersect with the third area groove.

[0044] The first area groove and the third area groove may be provided such that their respective grooves contact each other at four points.

[0045] The third area groove portion can be arranged so as to be spaced apart from the fourth area groove portion within the second panel without contacting it.

[0046] The first area groove may have a portion that is connected to the fourth area groove so as to be parallel to each other.

[0047] The above second area groove may have a portion that is connected to the above third area groove so as to be parallel to each other.

[0048] The above first groove section and first stage groove section may be arranged alternately, and the above second groove section and second stage groove section may be arranged alternately.

[0049] The first groove portion may be positioned so as to be longer than the midpoint between both sides of the first panel from one side of the first panel, and the first groove portion may be positioned so as to be shorter than the midpoint between both sides of the first panel from one side of the first panel, and the second groove portion may be positioned so as to be longer than the midpoint between both sides of the second panel from one side of the second panel, and the second groove portion may be positioned so as to be shorter than the midpoint between both sides of the second panel from one side of the second panel.

[0050] The heat exchanger of the present invention has a first connecting part that is intersected and connected to a first groove and a second groove, and a first connecting part whose side ends are connected to each other in parallel, so that when the refrigerant entering through the refrigerant inlet is distributed to each flow path, the phenomenon of the refrigerant shifting can be prevented.

[0051] In addition, the heat exchanger of the present invention can reduce flow imbalance between the flow path near the refrigerant inlet and the flow path far from it.

[0052] In the heat exchanger of the present invention, even if the first region groove and the second region groove form a “separated structure,” the first region groove and the fourth region groove form a “connected structure,” thereby enabling the first region and the third region provided on the left; and the second region and the fourth region provided on the right to mix well so that the refrigerant flow can be separated left and right, thereby enabling uniform distribution of the refrigerant.

[0053] In the heat exchanger of the present invention, a first groove portion within a first region groove portion is arranged so as to be parallel to a second groove portion within a fourth region groove portion, and a first groove portion within a second region groove portion is arranged so as to be parallel to a second groove portion within a third region groove portion, so that the refrigerant can flow uniformly along the first groove portion within the first region groove portion and the second groove portion within the fourth region groove portion arranged parallel to each other. Likewise, the refrigerant can flow uniformly along the first groove portion within the second region groove portion and the second groove portion within the third region groove portion arranged parallel to each other. That is, the refrigerant can flow from the first region to the second region through the fourth region, and the refrigerant can flow from the third region to the fourth region through the second region.

[0054] FIG. 1 is a perspective view illustrating a heat exchanger of the present invention.

[0055] FIG. 2 is a side view illustrating a heat exchanger of the present invention.

[0056] FIG. 3 is a perspective view illustrating a single pin formed by combining the first panel and the second panel.

[0057] FIG. 4 is an exploded perspective view showing the first panel and the second panel of FIG. 3 disassembled.

[0058] FIG. 5 is a front view showing an enlarged view of the first panel.

[0059] FIG. 6 is an enlarged front view of the second panel.

[0060] FIG. 7 is a front view conceptually illustrating a Euro by overlapping the first panel and the second panel.

[0061] FIG. 8 is a conceptual diagram illustrating the flow of the refrigerant in FIG. 7.

[0062] FIG. 9 is a perspective view illustrating one side of a heat exchanger having a separate header structure.

[0063] FIG. 10 is a plan view illustrating a heat exchanger having a separate header structure.

[0064] Hereinafter, a heat exchanger (100) related to the present invention will be described in more detail with reference to the drawings.

[0065] In this specification, identical or similar reference numbers are assigned to identical or similar configurations even for different embodiments, and redundant descriptions thereof are omitted.

[0066] In addition, even if the embodiments are different, as long as there is no structural or functional contradiction, the structure applied to one embodiment can be applied identically to another embodiment.

[0067] Singular expressions include plural expressions unless the context clearly indicates otherwise.

[0068] In describing the embodiments disclosed in this specification, if it is determined that a detailed description of related prior art could obscure the essence of the embodiments disclosed in this specification, such detailed description is omitted.

[0069] The attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification, and the technical concept disclosed in this specification is not limited by the attached drawings; it should be understood that all modifications, equivalents, and substitutions included within the concept and technical scope of the present invention are included.

[0070] FIG. 1 is a perspective view illustrating a heat exchanger (100) of the present invention, FIG. 2 is a side view illustrating a heat exchanger (100) of the present invention, and FIG. 3 is a perspective view illustrating a single fin (10) in which a first panel (11) and a second panel (13) are combined.

[0071] In addition, FIG. 4 is an exploded perspective view showing the first panel (11) and the second panel (13) of FIG. 3 in disassembly, FIG. 5 is an enlarged front view showing the first panel (11), and FIG. 6 is an enlarged front view showing the second panel (13).

[0072] Meanwhile, FIG. 7 is a front view conceptually illustrating a flow path by overlapping the first panel (11) and the second panel (13), and FIG. 8 is a conceptual diagram illustrating the flow of the refrigerant in FIG. 7.

[0073] Hereinafter, the heat exchanger (100) of the present invention will be described with reference to FIGS. 1 to 8.

[0074] The heat exchanger (100) of the present invention comprises: a plurality of fins (10) arranged continuously in one direction, each having a flow path that allows a refrigerant to flow inside; and two headers installed on both sides of the plurality of fins (10) to communicate with the flow path.

[0075] Each of the plurality of pins (10) is formed so that the first and second panels (11, 13) are joined.

[0076] The first panel (11) is provided with a plurality of first grooves (11a) that are concave in the first panel (11) and extend diagonally.

[0077] The second panel (13) is provided with a plurality of second grooves (13a) that are concave in the second panel (13) and extend diagonally.

[0078] The first groove (11a) has a first connecting part (12a) that communicates with the second groove (13a) in a direction that intersects each other at the side ends, and the first groove (11a) has a second connecting part (12b) that communicates with the second groove (13a) in a direction that is parallel to each other at the side ends.

[0079] As a result, when the refrigerant entering through the refrigerant inlet is distributed to each path, the phenomenon of the refrigerant shifting can be prevented.

[0080] In addition, it can reduce the flow imbalance between the path near and far from the refrigerant inlet.

[0081] For convenience, the surface between the first panel (11) and the second panel (13) that is provided with a flow path through which the refrigerant passes by the first groove (11a) and the second groove (13a) is referred to as the inner surface of the fin (10), and the surface where the refrigerant does not flow is referred to as the outer surface of the fin (10). The outer surface of the fin (10) may be the space between each fin (10).

[0082] Each fin (10) is formed so that the first panel (11) and the second panel (13) are joined, so that a refrigerant flows along the first and second grooves (11a, 13a) on the inner side of the fin (10), and air flows on the outer side of the fin (10), that is, in the space between each fin (10), to exchange heat with the refrigerant.

[0083] In Figure 1, the dotted arrows represent the flow of the refrigerant, and the solid arrows represent the flow of the air.

[0084] In particular, the present invention allows refrigerant introduced through a refrigerant inlet without a separate distribution improvement structure to flow through a path formed by the first and second grooves (11a, 13a) inside the fin (10) via each header formed through the upper and lower plate fin (10), and then combine at the opposite header to flow to a refrigerant outlet.

[0085] In the present invention, the first groove (11a) and the second groove (13a) may be V-shaped. That is, within each pin (10), the first groove (11a) and the second groove (13a) form a V-shape, that is, a chevron shape.

[0086] However, in the present invention, by providing a second connecting part (12b) in the middle of the first groove (11a), that is, between the first area groove part (11b) and the second area groove part (11c), a V-shape is formed in which the parts are broken off from each other in the middle or near the middle.

[0087] In the case of conventional technology, the difference in flow rate between the flow paths close to and far from the refrigerant inlet is large, and the deviation can increase, especially as the size of the heat exchanger (100) increases.

[0088] As the distribution becomes unbalanced, the heat exchange efficiency decreases, and the larger the size of the heat exchanger (100), the greater the decrease in efficiency.

[0089] In the present invention, a first groove (11a) can be formed on one side of the first panel (11), and a second groove (13a) can be formed on one side of the second panel (13).

[0090] The first panel (11) and the second panel (13) can be joined together such that the surface on which the concave part of the first groove (11a) is formed in the first panel (11) and the surface on which the concave part of the second groove (13a) is formed in the second panel (13) face each other. As a result, one pin (10) is formed, and a plurality of pins (10) are gathered to form a heat exchanger (100).

[0091] To increase the efficiency of heat exchange, it is preferable to form a vacuum condition between the first panel (11) and the second panel (13) before the refrigerant is introduced.

[0092] The header (20) may be provided in two. The two headers (20) may be placed on each side of the plurality of pins (10). The two sides may be the upper and lower sides of the pin (10) that extends in the vertical direction. The header (20) may be in communication with the fluid passages formed inside the plurality of pins (10).

[0093] Accordingly, the refrigerant can be introduced into one of the two headers (20), pass through the channels formed inside each of the plurality of fins (10), and then be discharged through the other of the two headers (20). Additionally, air can pass between the plurality of fins (10) and between the two headers (20) to exchange heat with the flowing refrigerant.

[0094] For example, headers may be placed on the upper and lower sides of the pin (10), and refrigerant may be introduced into the upper header and refrigerant may be discharged through the lower header.

[0095] Referring to FIG. 3, the opening (11m) may be provided in two and formed adjacent to each side of the pin (10). The opening (11m) may communicate with a flow path formed inside the pin (10). The opening (11m) may have a circular shape.

[0096] The pin connection part (11g) may be provided in two and may be placed in each of the two openings (11m). The pin connection part (11g) may extend along the direction in which a plurality of pins (10) are arranged. The pin connection part (11g) may have a cylindrical shape that surrounds the opening (11m).

[0097] The pin connection part (11g) can be fitted into the opening (11m).

[0098] As illustrated in FIG. 3, the pin connection (11g) can be in communication with the opening (11m). When a plurality of pins (10) are arranged, the pin connection (11g) can be connected between each of the plurality of pins (10) to form a header (20).

[0099] The refrigerant can flow through the opening (11m) inside the fin connection part (11g). The refrigerant can be introduced into the fin (10) through the fin connection part (11g) or discharged from the fin (10).

[0100] The first and second grooves (11a, 13a) may be formed between two fin connecting parts (11g) in the fin (10). The first and second grooves (11a, 13a) may be recessed outwardly from the fin (10) to form a flow path through which refrigerant flows inside the fin (10). The flow path formed by the first and second grooves (11a, 13a) may be in communication with an opening (11m).

[0101] The heat exchanger (100) of the present invention may be an integrated fin (10)-tube heat exchanger (100).

[0102] The heat exchanger (100) of the present invention may include an asymmetric chevron shape structure, thereby improving water flowability and enabling uniform distribution of refrigerant without the addition of a separate improved structure.

[0103] In the present invention, the improvement of water flowability may be related to the case where the heat exchanger (100) is used as an evaporator. That is, when the air is cooled below the dew point, condensation may occur in the air passage and water may form on the outer surface of the fin (10) or on the outer surface of the first and second grooves (11a, 13a).

[0104] If water does not flow along the fin (10) and remains trapped, it becomes a structure that hinders heat exchange with air, which can cause a decrease in performance and an increase in air pressure loss.

[0105] In other words, in the present invention, the refrigerant distribution uniformity is related to the refrigerant flowing inside the first groove (11a) and the second groove (13a) (or, the inner surface of the fin (10)), and the water flow can be understood as related to the water that may be generated on the air side of the outer surface of the fin (10).

[0106] Meanwhile, if two pairs of connecting pins (10) are arranged by combining two pins (10), air flows between them to form a structure capable of heat exchange with the refrigerant.

[0107] It can be understood that the refrigerant on the inner side of the fin (10) and the air on the outer side of the fin (10) do not mix with each other and each form a closed loop.

[0108] In the present invention, as the first groove (11a) and the second groove (13a) are provided with a first connecting part (12a), the flow of refrigerant may not flow from the first region to the second region at the first connecting part (12a) and may be partially cut off.

[0109] In addition, since the first groove (11a) and the second groove (13a) are provided with a second connecting part (12b), the first groove (11a) and the second groove (13a) can form a flow path through which refrigerant is exchanged with each other.

[0110] In this way, the present invention, by providing a first connecting part (12a) and a second connecting part (12b), can improve water flow and enable refrigerant homogenization in an asymmetrical shape by securing a disconnected structure.

[0111] In the present invention, the first connecting part (12a) and the second connecting part (12b) can be arranged alternately with each other.

[0112] As a result, the effect of refrigerant homogenization can be further enhanced through improved water flow resulting from the securing of a disconnected structure and an asymmetrical shape.

[0113] The first groove (11a) may include a first area groove portion (11b) arranged diagonally in the first area (left) of the first panel (11); and a second area groove portion (11c) arranged diagonally intersecting the first area groove portion (11b) in the second area (right) of the first panel (11).

[0114] As a result, the refrigerant can flow in the first and second regions, and the heat exchange performance can be improved.

[0115] As shown in FIGS. 3 to 5, in the first panel (11), the first area may be provided on the left side and the second area may be provided on the right side.

[0116] The first area groove (11b) can be positioned so as to be spaced apart from the second area groove (11c) within the first panel (11) without contacting it.

[0117] As shown in FIGS. 3 to 5, the first region groove (11b) forms a roughly V-shape with the second region groove (11c), and the first region groove (11b) and the second region groove (11c) are spaced apart without contacting each other, so that the flow of the refrigerant can be separated into the first region and the second region.

[0118] The second groove (13a) may include a third area groove portion (13b) arranged diagonally in a third area facing the first area (left) in the second panel (13); and a fourth area groove portion (13c) arranged diagonally intersecting the third area groove portion (13b) in a fourth area facing the second area (right).

[0119] An example is shown in which the third area groove (13b) is formed extending upward to the right from the left side toward the middle part of the pin (10), as shown in FIGS. 4 and 6, and the fourth area groove (13c) is formed extending downward to the left from the right side toward the middle part of the pin (10).

[0120] The first area groove (11b) may have a portion that is connected to intersect with the third area groove (13b).

[0121] For example, the first area groove (11b) and the third area groove (13b) may be provided so that their respective grooves come into contact with each other in four parts.

[0122] Referring to FIG. 7, an example is shown in which each groove of the first area groove (11b) contacts four parts of the third area groove (13b).

[0123] The first area groove (11b) and the third area groove (13b) extend in directions that intersect each other based on the drawing and are formed to come into contact in four parts, thereby forming a flow path in the shape of approximately a plurality of rhombuses.

[0124] According to this structure, the first region groove (11b) comes into contact with the third region groove (13b) in four places to form a rhombus-shaped flow path, thereby maximizing the flow of refrigerant in the first and third regions, and as a result, the performance of heat exchange can be further improved.

[0125] The first area groove (11b) may have a portion that is connected to the fourth area groove (13c) so as to be parallel to each other.

[0126] As a result, even if the first area groove (11b) and the second area groove (11c) form a “separated structure,” the first area groove (11b) and the fourth area groove (13c) form a “connected structure,” thereby enabling the first area and the third area provided on the left; and the second area and the fourth area provided on the right to mix well so that the refrigerant flow can be separated left and right, thereby enabling uniform distribution of the refrigerant.

[0127] Meanwhile, the first panel (11) may be provided with a first planar portion (11h), and the second panel (13) may be provided with a second planar portion (13h).

[0128] Additionally, the first panel (11) may be provided with a first outer portion (11k), and the second panel (13) may be provided with a second outer portion (13k).

[0129] The first planar portion (11h) may be formed between the first grooves (11a). The first planar portion may be formed on the same plane as the first outer portion (11k).

[0130] The first groove (11a) may have a shape that is recessed outward from the first planar portion (11h). The first planar portion (11h) may be arranged between the first grooves (11a) in the first panel (11).

[0131] The second planar portion (13h) may be formed between the second grooves (13a). The second planar portion (13h) may be formed on the same plane as the second outer portion (13k).

[0132] The second groove (13a) may have a shape that is recessed outward from the second planar portion (13h). The second planar portion (13h) may be arranged between the second groove (13a) in the second panel (13).

[0133] The first panel (11) and the second panel (13) can be combined with each other at the first outer portion (11k) and the second outer portion (13k).

[0134] That is, the first outer part (11k) and the second outer part (13k) can be joined together to form the outer part.

[0135] The first groove (11a) may include a first groove section (11d) and a first groove section (11e).

[0136] Chapter 1 The groove (11d) can be extended by a predetermined length.

[0137] The first groove (11d) can be extended by a length longer than the first groove (11e).

[0138] The first groove (11d) may be formed in multiple numbers. The multiple first grooves (11d) may be formed to be spaced apart from each other diagonally in the longitudinal direction of the pin (10).

[0139] For example, the first groove (11d) may be positioned so as to be longer than the midpoint between both sides of the first panel (11) from one side of the first panel (11).

[0140] The first groove section (11e) can be extended by a length smaller than that of the first groove section (11d).

[0141] For example, the first groove portion (11e) may be positioned so as to be shorter than the midpoint between both sides of the first panel (11) from one side of the first panel (11).

[0142] The first stage groove (11e) may also be formed in multiple numbers. The multiple first stage grooves (11e) may be formed to be spaced apart from each other diagonally in the longitudinal direction of the pin (10).

[0143] Preferably, the first groove section (11d) and the first groove section (11e) can be arranged alternately with each other.

[0144] The second groove (13a) may include a second groove section (13d) and a second groove section (13e).

[0145] Chapter 2 The groove (13d) can be extended by a predetermined length.

[0146] The second groove (13d) can be extended by a length longer than the second groove (13e).

[0147] The second groove (13d) may be formed in multiple numbers. The multiple second grooves (13d) may be formed to be spaced apart from each other diagonally in the longitudinal direction of the pin (10).

[0148] The second groove (13d) above may be positioned so as to be longer than the midpoint between both sides of the second panel (13) from one side of the second panel (13).

[0149] The second groove (13e) can be extended by a length smaller than that of the second groove (13d).

[0150] The second groove portion (13e) may be positioned so as to be shorter than the midpoint between both sides of the second panel (13) from one side of the second panel (13).

[0151] Preferably, the second groove section (13d) and the second groove section (13e) may be arranged alternately.

[0152] The heat exchanger (100) of the present invention comprises: a plurality of fins (10) arranged continuously in one direction, each having a flow path that allows a refrigerant to flow inside; and two headers installed on both sides of the plurality of fins (10) to communicate with the flow path.

[0153] Each of the plurality of pins (10) is formed so that the first and second panels (11, 13) are joined.

[0154] The first panel (11) is provided with a plurality of first grooves (11a) that are concave in the first panel (11) and extend diagonally.

[0155] The second panel (13) is provided with a plurality of second grooves (13a) that are concave in the second panel (13) and extend diagonally.

[0156] The first groove (11a) comprises a first area groove portion (11b) arranged diagonally in a first area (left) of the first panel (11); and a second area groove portion (11c) arranged diagonally intersecting the first area groove portion (11b) in a second area (right) of the first panel (11).

[0157] The second groove (13a) includes a third area groove portion (13b) and a fourth area groove portion (13c) in the second panel (13).

[0158] The third area groove (13b) is arranged diagonally in the third area facing the first area (left).

[0159] The fourth area groove (13c) is arranged diagonally in the fourth area facing the second area (right side) and intersecting with the third area groove (13b).

[0160] The first groove (11a) includes a first groove section (11d) and a first groove section (11e).

[0161] Chapter 1 Home (11d) is extended by a predetermined length.

[0162] The first groove section (11e) is extended by a length smaller than that of the first groove section (11d).

[0163] The second groove (13a) includes a second groove section (13d) and a second groove section (13e).

[0164] Chapter 2 The groove (13d) is extended by a predetermined length.

[0165] The second groove section (13e) is extended by a length smaller than that of the second groove section (13d).

[0166] One end of the first groove (11d) in the first area groove (11b) is in contact with one end of the second groove (13d) in the fourth area groove (13c).

[0167] The first groove (11d) in the second area groove (11c) is in contact with one end of the second groove (13d) in the third area groove (13b).

[0168] As a result, when the refrigerant entering through the refrigerant inlet is distributed to each path, the phenomenon of the refrigerant shifting can be prevented.

[0169] In addition, it can reduce the flow imbalance between the path near and far from the refrigerant inlet.

[0170] For convenience, the surface between the first panel (11) and the second panel (13) that is provided with a flow path through which the refrigerant passes by the first groove (11a) and the second groove (13a) is referred to as the inner surface, and the surface where the refrigerant does not flow is referred to as the outer surface. The outer surface may be the space between each fin (10).

[0171] Each fin (10) is formed so that the first panel (11) and the second panel (13) are joined, so that a refrigerant flows along the first and second grooves (11a, 13a) on the inner side of the fin (10), and air flows on the outer side of the fin (10), that is, in the space between each fin (10), to exchange heat with the refrigerant.

[0172] In particular, the present invention allows refrigerant introduced through a refrigerant inlet without a separate distribution improvement structure to flow through a path formed by the first and second grooves (11a, 13a) inside the fin (10) via each header formed through the upper and lower plate fin (10), and then combine at the opposite header to flow to a refrigerant outlet.

[0173] In the present invention, the first groove (11a) and the second groove (13a) may be V-shaped. That is, within each pin (10), the first groove (11a) and the second groove (13a) form a V-shape, that is, a chevron shape.

[0174] However, in the present invention, by providing a second connecting part (12b) in the middle of the first groove (11a), that is, between the first area groove part (11b) and the second area groove part (11c), a V-shape is formed in which a part is cut off in the middle, near the middle.

[0175] In the case of conventional technology, the difference in flow rate between the flow paths close to and far from the refrigerant inlet is large, and the deviation can increase, especially as the size of the heat exchanger (100) increases.

[0176] As the distribution becomes unbalanced, the heat exchange efficiency decreases, and the larger the size of the heat exchanger (100), the greater the decrease in efficiency.

[0177] The first groove section (11d) within the first area groove section (11b) is arranged to be parallel to the second groove section (13d) within the fourth area groove section (13c), and the first groove section (11d) within the second area groove section (11c) can be arranged to be parallel to the second groove section (13d) within the third area groove section (13b).

[0178] As a result, the refrigerant can flow uniformly along the first groove (11d) in the first region groove (11b) arranged parallel to it and the second groove (13d) in the fourth region groove (13c). Likewise, the refrigerant can flow uniformly along the first groove (11d) in the second region groove (11c) arranged parallel to it and the second groove (13d) in the third region groove (13b). That is, the refrigerant can flow from the first region to the second region through the fourth region, and the refrigerant can flow from the third region to the fourth region through the second region.

[0179] The first groove (11a) may have a first connecting part (12a) that communicates with the second groove (13a) in a direction that intersects each other at the side ends. Additionally, the first groove (11a) may have a second connecting part (12b) that communicates with the second groove (13a) in a direction parallel to each other at the side ends.

[0180] As the first groove (11a) of the present invention has a first connecting part (12a) and a second connecting part (12b), a disconnected structure is secured, thereby improving water flow while simultaneously enabling the uniformization of the refrigerant in an asymmetrical shape.

[0181] The first area groove (11b) can be positioned so as not to come into contact with the second area groove (11c) within the first panel (11).

[0182] Likewise, the third area groove (13b) can be positioned so as not to come into contact with the fourth area groove (13c) within the second panel (13).

[0183] That is, in the first panel (11), the grooves in the first and second regions are formed spaced apart so as not to come into contact with each other, and in the second panel (13), the grooves in the third and fourth regions are also formed spaced apart so as not to come into contact with each other.

[0184] The first area groove (11b) may have a portion that is connected to intersect with the third area groove (13b).

[0185] For example, as shown in FIG. 7, the first area groove (11b) and the third area groove (13b) may be provided such that their respective grooves come into contact at four points.

[0186] The first area groove (11b) and the third area groove (13b) may be provided so that their respective grooves intersect at four points.

[0187] The first area groove (11b) may have a portion that is connected to the fourth area groove (13c) so as to be parallel to each other.

[0188] The second area groove (11c) may have a portion that is connected to the third area groove (13b) so as to be parallel to each other.

[0189] The first groove section (11d) and the first groove section (11e) can be arranged alternately, and the second groove section (13d) and the second groove section (13e) can be arranged alternately.

[0190] Accordingly, the present invention can reduce air-side pressure loss and improve evaporation performance by providing a water flow improvement structure during evaporation without the addition of a separate structure.

[0191] In particular, through the asymmetrical chevron shape, the refrigerant flow, which can be separated into left and right sides by a disconnected structure, can be mixed well, thereby enabling uniform distribution of the refrigerant.

[0192] FIG. 9 is a perspective view showing one side of a heat exchanger (100) having a separate header, and FIG. 10 is a plan view showing a heat exchanger (100) having a separate header.

[0193] Referring to FIGS. 9 and 10, an example of a header (21a, 21b, 21c) coupled in a receiving form to a plurality of pins (10) is shown.

[0194] As illustrated in FIG. 9, an example is shown in which the refrigerant flows into the inlet (21d), flows along the first and second grooves (11a, 13a) on the inner surface of the fin (10), and after heat exchange with air, flows out through the outlet (21e).

[0195] The heat exchanger (100) of FIGS. 9 and FIGS. 10 differs only in the structure of the header from the heat exchanger (100) of the structure described above in FIGS. 1 to 8, and the structure of the plurality of fins (10) and the first groove (11a) and second groove (13a) provided in the first panel (11) and second panel (13) is as described above.

[0196] The heat exchanger (100) of the present invention has a first connecting part (12a) in which the first groove (11a) and the second groove (13a) are connected in a direction that intersects each other at the side ends, and a second connecting part (12b) in which they are connected in a direction parallel to each other at the side ends, so that when the refrigerant that enters through the refrigerant inlet is distributed to each flow path, the phenomenon of the refrigerant shifting can be prevented.

[0197] In addition, the heat exchanger (100) of the present invention can reduce the flow rate imbalance between the flow path close to the refrigerant inlet and the flow path far away.

[0198] In the heat exchanger (100) of the present invention, even if the first area groove (11b) and the second area groove (11c) form a “separated structure,” the first area groove (11b) and the fourth area groove (13c) form a “connected structure,” thereby enabling the first area and the third area provided on the left; and the second area and the fourth area provided on the right to mix well so that the refrigerant flow can be separated left and right, thereby enabling uniform distribution of the refrigerant.

[0199] In the heat exchanger (100) of the present invention, the first groove (11d) within the first region groove (11b) is arranged so as to be parallel to the second groove (13d) within the fourth region groove (13c), and the first groove (11d) within the second region groove (11c) is arranged so as to be parallel to the second groove (13d) within the third region groove (13b), so that the refrigerant can flow uniformly along the first groove (11d) within the first region groove (11b) and the second groove (13d) within the fourth region groove (13c) arranged parallel to each other. Likewise, the refrigerant can flow uniformly along the first groove (11d) within the second region groove (11c) and the second groove (13d) within the third region groove (13b) arranged parallel to each other. That is, the first region allows the refrigerant to flow into the second region through the fourth region, and the third region allows the refrigerant to flow into the fourth region through the second region.

[0200] The heat exchanger (100) described above is not limited to the configuration and method of the embodiments described above, and all or part of each embodiment may be selectively combined to allow for various modifications to be made.

[0201] It is obvious to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit and essential features of the invention. Accordingly, the foregoing detailed description should not be interpreted restrictively in all respects but should be considered exemplary. The scope of the invention shall be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the invention are included within the scope of the invention.

[0202] The present invention can be used in a heat exchanger with a structure that improves performance by reducing distribution deviations between channels.

Claims

1. A plurality of fins arranged continuously in one direction, each having a flow path that allows refrigerant to flow on the inside; and It includes a pair of headers installed on both sides of the plurality of pins to communicate with the above Euro, and Each of the above plurality of pins is formed so that the first panel and the second panel are joined, and The first panel is provided with a plurality of first grooves that are concave in the first panel and extend diagonally. The second panel is provided with a plurality of second grooves that are concave in the second panel and extend diagonally. The first groove above has a first connecting part that communicates with the second groove above in a direction that intersects each other at the side ends, and A heat exchanger having a second connecting part that communicates with the second groove in a direction parallel to each other at the side ends, wherein the first groove is connected to the second groove.

2. In Paragraph 1, A heat exchanger in which the first connecting part and the second connecting part are alternately arranged.

3. In Paragraph 1, The heat exchanger comprising: a first groove, wherein the first groove is a first area groove portion arranged diagonally in a first area of ​​the first panel; and a second area groove portion arranged diagonally intersecting the first area groove portion in a second area of ​​the first panel.

4. In Paragraph 3, The first area groove is a heat exchanger arranged so as not to come into contact with the second area groove within the first panel and is spaced apart.

5. In Paragraph 4, The second groove above is in the second panel, In the third area facing the first area above, a third area groove portion arranged diagonally; A heat exchanger comprising a fourth region groove arranged diagonally intersecting the third region groove in a fourth region facing the second region.

6. In Paragraph 5, A heat exchanger having a portion that communicates with the first area groove portion to intersect the third area groove portion.

7. In Paragraph 6, A heat exchanger configured such that the first region groove and the third region groove each have their respective grooves in contact at four points.

8. In Paragraph 5, The above third region groove is a heat exchanger arranged so as not to come into contact with the fourth region groove within the above second panel and is spaced apart.

9. In Paragraph 5, A heat exchanger having a portion that communicates with the first region groove portion so as to be parallel to the fourth region groove portion.

10. In Paragraph 5, A heat exchanger having a portion that communicates with the second area groove portion so as to be parallel to the third area groove portion.

11. In Paragraph 1, The above first groove is, Chapter 1 groove extending by a predetermined length and It includes a first stage groove that extends by a length smaller than the first stage groove, and The above second groove is, Chapter 2 groove extending by a predetermined length and A heat exchanger including a second stage groove extending by a length smaller than the second stage groove above.

12. In Paragraph 11, The above first groove section and first stage groove section are arranged alternately, The above-mentioned second-stage groove section and second-stage groove section are alternately arranged in a heat exchanger.

13. In Paragraph 11, The above-mentioned first groove portion is positioned so as to be longer than the midpoint between both sides of the first panel from one side of the first panel, and The first groove portion is positioned such that it is shorter than the midpoint between both sides of the first panel from one side of the first panel, and The above second groove portion is positioned so as to be longer than the midpoint between both sides of the second panel from one side of the second panel, and The above second stage groove is a heat exchanger positioned such that it is shorter than the midpoint between both sides of the second panel from one side of the second panel.

14. A plurality of fins arranged continuously in one direction, each having a flow path that allows refrigerant to flow on the inside; and It includes a pair of headers installed on both sides of the plurality of pins to communicate with the above Euro, and Each of the above plurality of pins is formed so that the first panel and the second panel are joined, and The first panel is provided with a plurality of first grooves that are concave in the first panel and extend diagonally. The second panel is provided with a plurality of second grooves that are concave in the second panel and extend diagonally. The first groove comprises a first area groove portion arranged diagonally in a first area of ​​the first panel; and a second area groove portion arranged diagonally intersecting the first area groove portion in a second area of ​​the first panel. The second groove above is in the second panel, In a third area facing the first area, a third area groove portion arranged diagonally; and in a fourth area facing the second area, a fourth area groove portion arranged diagonally intersecting the third area groove portion, are included. The above first groove is, Chapter 1 groove extending by a predetermined length and It includes a first stage groove that extends by a length smaller than the first stage groove, and The above second groove is, Chapter 2 groove extending by a predetermined length and It includes a second stage groove that extends by a length smaller than the second stage groove mentioned above, A heat exchanger in which one end of the first groove portion within the first area groove portion is in contact with one end of the second groove portion within the fourth area groove portion, and one end of the first groove portion within the second area groove portion is in contact with one end of the second groove portion within the third area groove portion.

15. In Paragraph 14, A heat exchanger in which the first groove portion within the first area groove portion is arranged parallel to the second groove portion within the fourth area groove portion, and the first groove portion within the second area groove portion is arranged parallel to the second groove portion within the third area groove portion.

16. In Paragraph 14, The first groove above has a first connecting part that communicates with the second groove above in a direction that intersects each other at the side ends, and A heat exchanger having a second connecting part that communicates with the second groove in a direction parallel to each other at the side ends, wherein the first groove is connected to the second groove.

17. In Paragraph 14, The first area groove is a heat exchanger arranged so as not to come into contact with the second area groove within the first panel and is spaced apart.

18. In Paragraph 14, A heat exchanger having a portion that communicates with the first area groove portion to intersect the third area groove portion.

19. In Paragraph 18, A heat exchanger configured such that the first region groove and the third region groove each have their respective grooves in contact at four points.

20. In Paragraph 14, The above third region groove is a heat exchanger arranged so as not to come into contact with the fourth region groove within the above second panel and is spaced apart.

21. In Paragraph 14, A heat exchanger having a portion that communicates with the first region groove portion so as to be parallel to the fourth region groove portion.

22. In Paragraph 14, A heat exchanger having a portion that communicates with the second area groove portion so as to be parallel to the third area groove portion.

23. In Paragraph 14, The above first groove section and first stage groove section are arranged alternately, The above-mentioned second-stage groove section and second-stage groove section are alternately arranged in a heat exchanger.

24. In Paragraph 14, The above-mentioned first groove portion is positioned so as to be longer than the midpoint between both sides of the first panel from one side of the first panel, and The first groove portion is positioned such that it is shorter than the midpoint between both sides of the first panel from one side of the first panel, and The above second groove portion is positioned so as to be longer than the midpoint between both sides of the second panel from one side of the second panel, and The above second stage groove is a heat exchanger positioned such that it is shorter than the midpoint between both sides of the second panel from one side of the second panel.

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