KR20230114705A - Heat exchanger - Google Patents

Abstract

The heat exchanger includes a fin group and a tube group for a heat exchange medium. The pin group includes a plurality of plate pins in the shape of a polygonal flat plate having an acute first corner portion. The plurality of plate fins are arranged with a gap through which air for air conditioning passes, and the air for air conditioning flows in a first direction along a side of the first corner portion. The tube group includes a plurality of heat transfer tubes meandering in the first direction. The heat exchanger pipe includes a plurality of pin mounting portions mounted to the pin group through the pin group. In the plate pin, a second pin mounting portion adjacent to the first pin mounting portion in a direction orthogonal to the first direction is positioned between the first pin mounting portions adjacent to the first direction.

Description

Heat exchanger {HEAT EXCHANGER}

The present disclosure relates to heat exchangers.

Japanese Unexamined Patent Publication No. 2013-100992 discloses a heat exchange coil incorporated in an air conditioner. In the heat exchange coil, among a group of rectangular plate fins, a plurality of plate fins are arranged with a gap through which air for air conditioning passes, and a heat transfer tube group through which a heat exchange medium flows passes through the plurality of plate fins to form a plurality of plate fins. It has a structure to be mounted on.

If the height of the heat exchange coil is high, an air conditioner equipped with the heat exchange coil cannot be installed in a narrow ceiling space, that is, in a narrow ceiling, so a machine room for the air conditioner may be required. Since the downward gradient of the drain pipe of the air conditioner equipped with the heat exchange coil cannot be secured, a drain up pump may be required. Therefore, cost increase occurs.

A heat exchanger according to one embodiment of the present disclosure includes a fin group and a tube group through which a heat exchange medium that passes through the fin group and is attached to the fin group and flows therein exchanges heat with air for air conditioning. The fin group is a plurality of plate fins in the shape of a polygonal flat plate having an acute interior angle of a first corner portion among a plurality of corner portions, and the plate surfaces overlap each other with a gap through which the air for air conditioning passes. and a plurality of plate fins disposed so that air for air conditioning flows in a first direction along one of a first side and a second side forming one corner portion. The tube group includes a plurality of heat transfer pipes extending along the first direction while meandering across the first direction. The heat exchanger pipe includes a plurality of pin mounting portions disposed at intervals in a direction along the first side and a direction along the second side, and repeatedly mounted to the pin group by penetrating the pin group. A plurality of the pin mounting portions attached to the plate pin are disposed between the first pin mounting portions adjacent to the first direction, in a direction along the plate surface of the plate pin and orthogonal to the first direction. It is arranged so that the second pin mounting portion adjacent to the mounting portion is located.

The above and further configurations, features and advantages of the present disclosure will become more fully apparent from the following description of preferred embodiments in conjunction with the accompanying drawings.

[Fig. 1] Fig. 1 is a perspective view showing an example of the configuration of a heat exchanger according to an embodiment.
[Fig. 2] Fig. 2 is a brief explanatory view of the heat exchanger of Fig. 1 viewed from the long side direction.
[Fig. 3] Fig. 3 is an explanatory view as viewed from the direction of the central axis of the pin mounting portion.
[Fig. 4] Fig. 4 is an enlarged view of main parts of Fig. 3;
[Fig. 5] Fig. 5 is a perspective view of main parts of Fig. 4;
[Fig. 6] Fig. 6 is a brief explanatory diagram showing an example of use of the heat exchanger according to the embodiment.

First, an embodiment according to the technology of the present disclosure will be described. A heat exchanger according to an embodiment of the present disclosure includes a fin group and a tube group through which a heat exchange medium passing through the fin group and mounted on the fin group and flowing therein exchanges heat with air for air conditioning. The fin group is a plurality of plate fins in the shape of a polygonal flat plate having an acute interior angle of a first corner portion among a plurality of corner portions, and the plate surfaces overlap each other with a gap through which the air for air conditioning passes, and and a plurality of plate fins disposed so that the air for air conditioning flows in a first direction along any one of a first side and a second side forming one corner portion. The tube group includes a plurality of heat transfer tubes meandering across the first direction and extending along the first direction, the heat transfer tubes being spaced apart in a direction along the first side and a direction along the second side. and a plurality of pin mounting portions disposed and repeatedly mounted on the pin group through the pin group, wherein the plurality of pin mounting portions mounted on the plate pins are interposed between first pin mounting portions adjacent to each other in a first direction. , A second pin mounting portion adjacent to the first pin mounting portion is located along the plate surface of the plate pin and in a direction orthogonal to the first direction.

According to the above embodiment, the heat exchanger according to the present disclosure reduces airflow resistance, that is, pressure loss, by enlarging the passage width through which air for air-conditioning passes, compared to the comparative example of the heat exchanger described below. The heat exchanger of the comparative example has a rectangular shape of plate fins, has a structure equivalent to that of the heat exchanger according to the present disclosure, and has the same heat transfer capability or heat exchange capability. Therefore, the heat exchanger according to the present disclosure may improve heat exchange capacity by increasing one or both of wind speed and air volume, and the improved heat exchange capacity may be used for size reduction.

The heat exchanger according to the present disclosure capable of increasing one or both of the wind speed and air volume is suitable for use in an indoor space requiring strict temperature control, such as a server room, and can also achieve energy saving effect and space saving. there is.

The heat exchanger according to the present disclosure can downsize its key. The air conditioner incorporating the heat exchanger can be made thin with a low height. Therefore, the air conditioner can be easily installed even in a narrow ceiling, and the dead space is effectively utilized, making the machine room unnecessary. Furthermore, the air conditioner can ensure a downward gradient of the drain pipe and does not require a drain-up pump, thereby reducing cost.

In the heat exchanger according to the present disclosure, it is possible to increase the effective length of the heat exchanger tube and the fin heat transfer area of the heat exchanger so that the pressure loss does not increase while the height thereof is reduced.

In the heat exchanger according to the embodiment of the present disclosure, the plate fin may be arranged such that the first corner portion is located upstream in the first direction.

According to the above embodiment, the heat exchanger can reduce pressure loss by expanding the width of the passage through which the air for air conditioning passes, from the inlet through which the air for air conditioning is introduced to the inside.

In the heat exchanger according to the one embodiment of the present disclosure, the plate fin has a rectangular shape, and the inner angle of the second corner portion of the plate fin facing the first corner portion may be an acute angle.

According to the above embodiment, in the plate fin, the interior angle of the corner portion located upstream in the first direction and the interior angle of the corner portion located downstream in the first direction are acute angles. The plurality of plate fins form an outlet for air conditioning air passing between the plurality of plate fins downstream, and the outlet extends in a direction obliquely crossing the first direction. Drain water generated during cooling can fall directly downward by gravity through between the plate fins, and is suppressed from being collected at the outlet and scattered outward from the outlet due to the wind speed of the air conditioning air.

In the heat exchanger according to the embodiment of the present disclosure, the interior angle of the corner portion having an acute angle may be 20° or more and 40° or less.

According to the above embodiment, the length of the heat exchanger along the first direction is prevented from being excessively increased by the fact that the interior angle of the corner portion of the acute angle is 20° or more. Therefore, reduction of the installation space of a heat exchanger is possible. When the interior angle of the acute-angled corner portion is 40° or less, it is possible to suppress the height of the heat exchanger along the direction perpendicular to the first direction from being too large. Therefore, it is possible to reduce the air flow resistance of the heat exchanger.

In the heat exchanger according to the embodiment of the present disclosure, the outer circumference of the pin mounting portion is wrapped around the outer circumferential surface of the pin mounting portion at a portion of the plate fin between the adjacent pin mounting portions in a second direction crossing the first direction. It may also include at least one protrusion for inducing and guiding the flow of the air for air conditioning moving along.

According to the above embodiment, the heat exchange efficiency of the air conditioning air is improved because the air for air conditioning flows while meandering around the heat exchanger pipe by being guided by the protrusions.

In the heat exchanger according to the embodiment of the present disclosure, the at least one projection is integral with the plate fin, and may be a bridge cut from the plate fin in a bridge shape.

According to the above embodiment, the protrusion may be formed by cutting and processing the plate pin. Therefore, for example, even when formation of a large number of projections is required, it is possible to simply form the projections while maintaining the holding strength of the projections by the plate pin. Furthermore, it is possible to reduce the cost for forming the projections.

In the heat exchanger according to the embodiment of the present disclosure, there may be a gap between the at least one protrusion and the pin mounting portion adjacent in the second direction.

According to the above embodiment, the air for air conditioning flows through the gap between adjacent pin mounting portions in the second direction, guided by the protrusions. Therefore, since the air for air conditioning flows along the outer circumference of the fin mounting portion so as to surround the outer circumferential surface of the fin mounting portion, the heat exchange efficiency of the air conditioning air is improved.

In the heat exchanger according to the embodiment of the present disclosure, the at least one protrusion may have a band shape extending in the second direction.

According to the above embodiment, the protrusion can capture air for air conditioning passing between adjacent fin mounting portions in the second direction, and can effectively guide and guide the captured air for air conditioning to the two fin mounting portions.

In the heat exchanger according to the one embodiment of the present disclosure, the at least one protrusion includes a plurality of protrusions between the pin mounting parts adjacent in the second direction, and the plurality of protrusions are arranged in the first direction. may be placed.

According to the above embodiment, the plurality of projections are arranged in a row from upstream to downstream of the flow of air for air conditioning between adjacent pin mounting portions in the second direction. Accordingly, the protrusion on the downstream side induces and guides the bypass air of the air-conditioning air that has passed through the protrusion on the upstream side. The efficiency of guiding air for air conditioning is improved.

In the heat exchanger according to the one embodiment of the present disclosure, the plurality of protrusions may have different lengths so as to become longer as they move away from the line connecting the adjacent pin mounting parts in the second direction.

According to the above embodiment, the plurality of protrusions have a length corresponding to the size of the gap between adjacent pin mounting portions in the second direction. Accordingly, the plurality of protrusions can effectively capture and guide air for air conditioning flowing between adjacent pin mounting portions in the second direction.

In the heat exchanger according to the embodiment of the present disclosure, a plurality of one end portions of the plurality of projections are located along an outer circumference of one side of the pin mounting portion adjacent in the second direction, and a plurality of other end portions of the plurality of projections are You may be located along the outer circumference of the other side of the said pin attachment part adjacent to the said 2nd direction.

According to the above embodiment, a shaped gap is formed along the outer circumference of the pin mounting portion between the pin mounting portion and the plurality of protrusions adjacent in the second direction. Thus, the air conditioning flow flowing along the outer circumference of the fin mounting portion is effectively formed so as to surround the outer circumferential surface of the fin mounting portion.

In the heat exchanger according to the embodiment of the present disclosure, the plurality of heat exchanger tubes have a cross section having an elliptical outer circumferential shape, and the plurality of heat exchanger tubes have a long axis of the ellipse of the cross section in a direction along the first direction. may be placed.

According to the above embodiment, since the outer circumferential shape of the cross section of the heat transfer tube is elliptical, the pressure loss due to the heat transfer tube is small. Therefore, the heat exchanger according to the present disclosure is suitable for a small amount of large temperature difference, which results in a reduction in pump power for the heat exchanger and a reduction in equipment cost for the heat exchanger.

In the heat exchanger according to the one embodiment of the present disclosure, in the plate fin, the second pin mounting portion is disposed at a position offset from the first pin mounting portion in a direction orthogonal to the first direction, and You may arrange|position in the position between the said 1st pin attaching part in 1 direction.

According to the above embodiment, the first pin mounting portion and the second pin mounting portion are staggered in the first direction. The air-conditioning air passing through the heat exchanger meanders through the first fin mounting portion and the second fin mounting portion by changing its flow direction, and can effectively contact the heat exchanger tube and the plate fin for heat exchange. Furthermore, the passage of the meandering flow of air for air conditioning may have a wide passage width. Thus, the heat exchange efficiency is improved.

In the following, exemplary embodiments of the present disclosure are described with reference to the drawings. The embodiments described below are all comprehensive or specific examples. Among the constituent elements in the following embodiments, constituent elements not described in the independent claims representing the highest level concepts are described as arbitrary constituent elements. Each drawing in the accompanying drawings is a schematic drawing, and is not necessarily drawn strictly. In each drawing, the same reference numerals are assigned to substantially the same components, and overlapping descriptions may be omitted or simplified. In this specification and claims, “device” may mean not only one device, but also a system composed of a plurality of devices.

1 to 5 show an example of a configuration of a heat exchanger 100 according to an embodiment. Although not limited thereto, in this embodiment, the heat exchanger 100 includes a coiled heat exchanger and is also referred to as a coiled heat exchanger. As shown in FIG. 1 , the heat exchanger 100 includes a heat exchange coil 101 which is a structure including a fin group 1 and a tube group 2 .

The air for air conditioning flows in the first direction F, which is the air flow direction, is supplied to the heat exchanger 100, and passes through the heat exchanger 100. The first direction (F) is shown as a thick dotted arrow. The tube group (2) passes through the pin group (1) and is also mounted to the pin group (1). The heat exchange medium M flows inside the tube group 2, specifically, inside the plurality of heat exchanger tubes 4 included in the tube group 2. The heat exchange medium M can heat-exchange with the air-conditioning air through the heat transfer pipe 4 etc., and can make the air-conditioning air into the temperature suitable for air-conditioning.

The technology of the present disclosure relates to a structure for exchanging heat between a heat exchange medium, which is cold water or hot water, with air for air conditioning, a structure for exchanging heat with a heat exchange medium, which is a refrigerant such as Freon, with air for air conditioning, and a structure for exchanging heat between other heat exchange media and air for air conditioning. Applicable. The drawing shows an example of application to a structure in which cold water or hot water is heat-exchanged with air for air conditioning.

The pin group 1 includes a set of plural plate pins 3 . The plate fin 3 has a flat plate shape. In this embodiment, the planar shapes and planar dimensions of the plurality of plate fins 3 are the same, but may be different from each other. The heat exchange coil 101 including the plurality of plate fins 3 and the tube group 2 is also called a plate fin coil, and the heat exchanger 100 is also called a plate fin coil type heat exchanger.

Although not limited to this, in this embodiment, the planar shape of the flat plate of the plate fin 3 is a rectangle. Among the four corners of the square of the plate pin 3, the interior angle of at least one corner is an acute angle. For example, among the four corners of the plate fin 3, the corner located most upstream in the first direction F may have at least an acute angle. For example, among the four corners of the plate fin 3, the corner located most downstream in the first direction F may have at least an acute angle.

In this embodiment, in the plate fin 3, the interior angles of the two corner portions 3A and 3B located opposite to each other are acute angles. The corner portion 3A is located most upstream in the first direction F, and the corner portion 3B is located most downstream in the first direction F. The plate fin 3 has a parallelogram flat plate shape, and the interior angles of the corners 3A and 3B may be the same. In the illustrated example, the plate fin 3 is in the shape of a parallelogram flat plate.

In this specification and claims, a "parallelogram" refers to a quadrangle in which the diagonals of each set of two sets of diagonals are the same, a quadrangle whose diagonals are different from each other in one set of the two sets of diagonals, but which can be substantially viewed as parallelograms, and two sets of diagonals. Although the diagonals are different in both sets of diagonals, it may include a quadrangle that can be viewed as a substantially parallelogram. "Parallelogram" includes a rhombus. The state in which the plurality of shapes are identical to each other may include a state in which the plurality of shapes are completely identical to each other and a state in which the plurality of shapes are substantially identical to each other. The state in which the plurality of dimensions are identical to each other may include a state in which the plurality of dimensions are completely equal to each other and a state in which the plurality of dimensions are substantially equal to each other. "Parallel" may include a completely parallel state and a state that can be regarded as substantially parallel. “Perpendicular” or “orthogonal” may include a completely perpendicular or orthogonal state and a substantially perpendicular or orthogonal state.

In the plate fin 3, the interior angle θ of the acute corner portion may be 20° or more and 40° or less, preferably about 30°. For example, in the parallelogram-shaped plate fin 3, the interior angle θ of the acute angle corner portions 3A and 3B is 20° or more and 40° or less, preferably about 30°. An angle of about 30° may include an angle of 30° and a viewable angle of substantially 30°. For example, an angle having a difference within ±1% of 30° can be regarded as substantially 30°.

The plurality of plate fins 3 are arranged so that the adjacent plate fins 3 and the adjacent plate fins 3 face each other with their plate faces 3a leaving a gap through which air for air conditioning passes. . For example, the plate face 3a is the main face of the flat plate of the plate fin 3 . The plurality of plate fins 3 are arranged so that their plate surfaces 3a overlap each other when viewed in the third direction D3, which is the direction in which the plurality of plate fins 3 are aligned. A plurality of plate pins 3 are aligned in a row in the third direction D3. Since the planar shapes and planar dimensions of the plurality of plate fins 3 are the same, the plate faces 3a of the plurality of plate fins 3 are each separated by the plate faces 3a of the adjacent plate fins 3. can be hidden In this embodiment, the third direction D3 is a direction perpendicular to the plate surface 3a.

For example, a set of plural plate pins 3 may be set along the first side direction A along the first side 3aa of the plate face 3a or the second side 3ab of the plate face 3a. It is arranged so that air for air conditioning flows in a first direction (F) along any one of the following second side directions (B). The second side 3ab is adjacent to the first side 3aa at the acute angle corner portion 3A of the plate surface 3a. The first side 3aa and the second side 3ab form an acute angle corner portion 3A. In the example of FIG. 1 , the first direction F is a direction along the first side direction A, and the second side direction B is an example of the second direction D2. When the plate fin 3 is in the shape of a parallelogram, the first side direction A is the short side direction along the short side of the plate face 3a, and the second side direction B is along the long side of the plate face 3a. is the direction of the long side.

Here, a case in which the structure of the heat exchanger 100 according to the present embodiment is changed while maintaining the same heat exchange capacity before and after the structure change is considered. The heat exchanger 100 according to the present embodiment includes a plurality of plate fins 3 in which the interior angle θ of the acute angle corner portions 3A and 3B is 20° or more and 40° or less.

For example, when the structure of the heat exchanger 100 is changed so that the interior angle θ of the acute angle corner portions 3A and 3B of each of the plurality of plate fins 3 is less than 20°, heat exchange after the structure change It is necessary to make the dimension of the group in the first direction F longer than before the structure change. Therefore, the installation space of the heat exchanger after structural change may be redundant than before structural change.

For example, when the structure of the heat exchanger 100 is changed so that the interior angle θ of the acute angle corner portions 3A and 3B of each of the plurality of plate fins 3 exceeds 40°, the structure after the change It is necessary to make the height of the heat exchanger higher than before the structural change. Therefore, the air flow resistance of the heat exchanger after the structure change may be greater than before the structure change.

An air outlet (7) for air conditioning is disposed on the side of the fin group (1). For example, the air outlet 7 for air conditioning is the side 1a of the fin group 1 where the third side 3ac of the plate fin 3 is lined up, or the fourth side 3ad of the plate fin 3 ) is set or formed on any one of the side portions 1b of the lined pin group 1. The third side 3ac is a side of the plate surface 3a opposite to the first side 3aa. The fourth side 3ad is a side of the plate surface 3a opposite to the second side 3ab. In this embodiment, the air outlet 7 for air conditioning is set on the side portion 1b. The air conditioning outlet 7 is inclined so as to descend from upstream to downstream in the first direction F. The fin group 1 can cause the drain water generated during cooling to fall directly downward through the gap between the plate fins 3 by gravity, and the drain water does not collect at the air outlet 7 for air conditioning due to the wind speed of the air conditioning air. can avoid Accordingly, scattering of the drain water is prevented.

As shown in FIG. 2 , the tube group 2 includes a plurality of heat transfer pipes 4 extending along the first direction F while meandering zigzag across the first direction F. The inlet and outlet of the heat exchange medium M of the tube group 2 are connected to respective headers 13 . That is, the inlet and outlet of the heat exchange medium M of the plurality of heat transfer tubes 4 are connected to separate headers 13. The heat transfer pipe 4 includes a plurality of pin mounting portions 5 that penetrate the plurality of plate fins 3 of the fin group 1 and are attached to the plurality of plate fins 3, respectively. In the fin mounting portion 5, the heat transfer pipe 4 passes through the plate fin 3 and is also mounted to the plate fin 3. The plate fin 3 includes a plurality of through holes through which the heat transfer tubes 4 pass. The heat transfer pipe 4 passes through the plurality of plate fins 3 of the fin group 1 in the plurality of fin mounting portions 5 disposed at intervals in the first side direction A and the second side direction B. to be repeatedly mounted on a plurality of plate pins (3).

As shown in Figs. 3 and 4, the heat transfer pipe 4 may have a cross section with an elliptical outer circumferential shape. The heat transfer pipe 4 may be arranged on the plate fin 3 so that the long axis LA of the elliptical cross section is in a direction along the first direction F. That is, the long axis of the elliptical outer circumference of the cross section of the pin mounting portion 5 follows the first direction F. The plurality of pin mounting portions 5 of the plate fin 3 fix the plate surface 3a of the plate fin 3 between the adjacent pin mounting portions 5a and 5b in the first direction F. It is arranged so that the pin mounting portion 5c adjacent to the pin mounting portions 5a and 5b is located along and perpendicular to the first direction F. The pin mount 5c is offset from the pin mounts 5a, 5b in a direction along the plate face 3a and orthogonal to the first direction F, between the pin mounts 5a, 5b. Accordingly, the width L of the passage through which the air for air conditioning passes is enlarged.

For example, with respect to the channel width L around the pin mounting portions 5a, 5b, and 5c, the width between the pin mounting portions 5a and 5c in the direction in which the pin mounting portions 5a and 5c line up is the channel width ( L), and a second case in which the width between the pin mounting portions 5b and 5c in the direction in which the pin mounting portions 5b and 5c are aligned is the flow path width L. The channel width L of the first case is larger than the width between the pin mounting portions 5a and 5c in the direction perpendicular to the first direction F, and the channel width L of the second case is ) is larger than the width between the pin mounting portions 5b and 5c in the direction perpendicular to . In this way, due to the synergistic effect of the outer circumferential shape of the cross section of the heat transfer tube 4 and the arrangement of the fin mounting portions 5, the airflow resistance received by the air for air conditioning is significantly reduced.

As shown in FIGS. 4 and 5 , the plate pin 3 is a plate pin 3 between adjacent pin mounting portions 5 in a second direction D2 , which is a direction crossing the first direction F. At the part, one or more protrusions 6 are included, and in this embodiment, a plurality of protrusions 6 are included. Although not limited thereto, in this embodiment, the second direction D2 is a direction along the second side direction B. The one or more protrusions 6, between the two pin mounting portions 5, direct air flow for air conditioning moving along the outer circumference of the two pin mounting portions 5 so as to surround the outer circumferential surfaces of the two pin mounting portions 5. It has a shape and arrangement to guide and guide.

Although not limited to this, in this embodiment, the plurality of projections 6 are band-shaped projections extending in a direction crossing the first direction F. For example, the plurality of protrusions 6 extend from one of the two pin mounting portions 5 toward the other. The plurality of protrusions 6 may extend along the second direction D2. A plurality of protrusions 6 are arranged in the first direction (F). The plurality of projections 6 are linear belt-shaped projections, but may be non-linear belt-shaped projections. The plurality of linear protrusions 6 are arranged parallel to each other, but may not be parallel to each other.

There is a gap between the two pin mounting portions 5 adjacent to the plurality of projections 6 and the plurality of projections 6 . The plurality of protrusions 6 between the two pin mounting portions 5 may have different lengths. For example, the length of the plurality of protrusions 6 may change so as to become longer as the distance from the line connecting the two pin mounting portions 5 increases. The line may be a line connecting the centers of the two pin mounting portions 5 to each other. For example, a plurality of end portions of one side of the plurality of protrusions 6 are located along the outer circumference of the cross section of one pin mounting portion 5, and a plurality of other end portions of the plurality of protrusions 6 are located along the outer circumference of the cross section of one pin mounting portion 5 ( The length of the plurality of protrusions 6 may be varied so as to be located along the outer periphery of the cross section of 5).

The plurality of protrusions 6 as described above meander the air flow for air conditioning to increase the contact distance between the air for air conditioning and the plate fin 3 and the heat transfer pipe 4, that is, increase the amount of heat transfer between them. . Furthermore, the plurality of protrusions 6 reduce bypass air that passes linearly between the two pin mounting portions 5 out of the air for air conditioning.

The protrusion 6 may be integral with the plate pin 3 or may be a separate body. In this embodiment, the protrusion 6 is integral with the plate pin 3. The protrusion 6 may be formed of the same material as the plate fin 3, or may be formed as a part of the plate fin 3. In this embodiment, the protrusion 6 is a cut bridge formed by processing the plate pin 3. Below, the "protrusion 6" may be expressed as "the branch bridge 6". The folding bridge 6 may be formed by cutting and twisting a part of the plate fin 3 into a bridge shape, and cutting and lancing. The planar shape of the folding bridge 6 is not particularly limited, but may be a rectangle. Four sides of the square of the folding bridge 6 may be parallel to one or more of the four sides 3aa, 3ab, 3ac, 3ad of the plate face 3a of the plate fin 3.

The planar shape of the folding bridge 6 may be the same as that of the plate fin 3, or may be a parallelogram shape. In this case, each side of the parallelogram of the folding bridge 6 may be parallel to each side of the plate face 3a.

For example, the cut bridge 6 of the parallelogram cuts the plate fin 3 at two long sides of the parallelogram along the second side direction B, and the two long sides along the first side direction A. It is formed by erecting a part of the plate fin 3 in the vertical direction of the plate surface 3a with the short side as a folding line. Accordingly, the folding bridge 6 has a bridge shape opening in the first direction F at the side portion along the second side direction B. The end, which is a fold line portion of the folding bridge 6, is located along the outer circumferential surface having an elliptical cross section of the pin mounting portion 5.

6 shows an example in which the heat exchanger 100 according to the embodiment is used for the air conditioner 8. The air conditioner 8 includes a heat exchange unit 9 for exchanging heat with air for air conditioning and a blower 10 for supplying air for air conditioning to the indoor space IS by passing the air for air conditioning through the heat exchange unit 9. A unit 11 and a ventilation duct 12 are provided. The heat exchange unit 9 includes a heat exchanger 100 . The heat exchange unit 9 , the blowing unit 11 , the indoor space IS, and the indoor and outdoor spaces (not shown) communicate with each other through the ventilation duct 12 . For example, the blowing duct 12 connects the heat exchange unit 9 and the blowing unit 11 so as to communicate with each other. The heat exchange unit 9 exchanges heat with air for air conditioning supplied by the blowing unit 11 . The air conditioner 8 supplies the air for air conditioning after heat exchange in the heat exchange unit 9 to the indoor space IS. For example, the heat exchange unit 9 and the blowing unit 11 are installed in the space inside the ceiling S of various buildings, such as an office building. The air conditioner 8 may have a structure in which the heat exchange unit 9 and the blowing unit 11 are integrated, or may have a structure including the heat exchange unit 9 and the blowing unit 11 separately.

In the above, the embodiments of the present disclosure have been described, but the present disclosure is not limited to the above embodiments. That is, various modifications and improvements are possible within the scope of the present disclosure. For example, various modifications made to the embodiments and configurations constructed by combining components in other embodiments are also included within the scope of the present disclosure.

For example, in the heat exchanger 100 according to the embodiment, the air conditioning outlet 7 may have a structure inclined so as to descend as it goes from downstream to upstream in the first direction F.

For example, in the heat exchanger 100 according to the embodiment, it is also free to make the outer peripheral shape of the cross section of the fin mounting portion 5 of the heat exchanger tube 4 of the tube group 2 a shape other than an ellipse.

In the heat exchanger 100 according to the embodiment, the planar shape of the plate fin 3 is a rectangle, but is not limited thereto, and may be a triangle or a polygon having five or more corner portions.

In the heat exchanger 100 according to the embodiment, the planar shape of the plate fin 3 is a rectangle in which the inner angles of the two opposing corner portions 3A and 3B are acute angles, but is not limited thereto. For example, one interior angle of corner part 3A, 3B may be an acute angle, and the interior angle of three corner part may be 90 degrees or more. In this case, the planar shape of the plate fin 3 may be a right trapezoid.

All numbers such as ordinal numbers and quantities used in this specification are exemplified to specifically describe the technology of the present disclosure, and the present disclosure is not limited to the exemplified numbers. The connection relationship between components is exemplified to specifically describe the technology of the present disclosure, and the connection relationship for realizing the function of the present disclosure is not limited thereto.

Since the scope of the present disclosure is defined by the appended claims rather than the description of the specification, so that the present disclosure can be embodied in various forms without departing from the scope of its essential features, the examples and modifications are illustrative and limiting. It is not. All changes that come within the claims and their scope, or equivalents to the claims and their scope, are intended to be embraced by the claims.

1: pin group
2: pipe group
3: plate pin
3A: first corner portion
3B: second corner portion
3a: plate side
3aa: first side
3ab: second side
4: heat pipe
5: pin mounting part
6: protrusion, season bridge
100: heat exchanger
A: direction of the first side
B: direction of the second side
D2: second direction
F: Air flow direction, first direction
θ: Cabinet

Claims (13)

A fin group (1) and a tube group (2) in which a heat exchange medium passing through the fin group (1), attached to the fin group (1) and flowing therein exchanges heat with air for air conditioning,
The fin group 1 is a plurality of plate fins 3 in the shape of a polygonal flat plate with an acute interior angle θ of a first corner portion 3A among a plurality of corner portions, and a gap through which the air for air conditioning passes. A first direction F along any one of the first side 3aa or the second side 3ab forming the first corner portion 3A, and the plate surfaces 3a overlap each other with Including a plurality of plate fins (3) arranged to flow the air for air conditioning,
The tube group 2 includes a plurality of heat transfer pipes 4 extending along the first direction F while meandering to cross the first direction F,
The heat transfer tubes 4 are disposed at intervals in the direction A along the first side 3aa and the direction B along the second side 3ab, and pass through the fin group 1. It includes a plurality of pin mounting parts 5 repeatedly mounted to the pin group 1,
The plurality of pin mounting parts 5 mounted on the plate pin 3 are formed between the adjacent first pin mounting parts 5 in the first direction F, on the plate surface of the plate pin 3. A heat exchanger (100) characterized in that a second pin mounting portion (5) adjacent to the first pin mounting portion (5) is located in a direction along (3a) and orthogonal to the first direction (F). . According to claim 1,
The heat exchanger (100), characterized in that the plate fin (3) is arranged so that the first corner portion (3A) is located upstream in the first direction (F). According to claim 1 or 2,
The plate pin 3 has a rectangular shape,
Heat exchanger (100), characterized in that in the plate fin (3), the interior angle (θ) of the second corner portion (3B) at a position facing the first corner portion (3A) is an acute angle. According to any one of claims 1 to 3,
The heat exchanger (100), characterized in that the interior angle (θ) of the corner portion of the acute angle shape is 20 ° or more and 40 ° or less. According to any one of claims 1 to 4,
The outer periphery of the pin mounting portion 5 is wrapped around the outer circumferential surface of the pin mounting portion 5 at a portion of the plate pin 3 between adjacent pin mounting portions 5 in the second direction intersecting the first direction F. A heat exchanger (100) comprising at least one protrusion (6) for inducing and guiding the flow of the air for air conditioning moving along. According to claim 5,
The heat exchanger (100), characterized in that the at least one protrusion (6) is integral with the plate fin (3) and is a folding bridge cut and erected in a bridge shape from the plate fin (3). According to claim 5 or 6,
The heat exchanger (100), characterized in that there is a gap between the at least one protrusion (6) and the pin mounting portion (5) adjacent in the second direction. According to any one of claims 5 to 7,
The heat exchanger (100), characterized in that the at least one protrusion (6) has a band shape extending in the second direction. According to any one of claims 5 to 8,
The at least one protrusion 6 includes a plurality of protrusions 6 between the pin mounting portions 5 adjacent in the second direction,
The heat exchanger (100), characterized in that the plurality of protrusions (6) are disposed in a row in the first direction (F). According to claim 9,
Heat exchanger (100), characterized in that the plurality of protrusions (6) have different lengths so as to become longer as they move away from the line connecting the pin mounting portions (5) adjacent to each other in the second direction. The method of claim 9 or 10,
A plurality of one end portions of the plurality of protrusions 6 are located along the outer circumference of one of the pin mounting portions 5 adjacent in the second direction,
A heat exchanger (100), characterized in that the plurality of other ends of the plurality of protrusions (6) are located along the outer circumference of the other of the pin mounting portions (5) adjacent in the second direction. According to any one of claims 1 to 11,
The plurality of heat transfer tubes 4 have a cross section with an elliptical outer circumferential shape,
Heat exchanger (100), characterized in that the plurality of heat exchanger tubes (4) are arranged so that the long axis of the elliptical shape of the cross section is in a direction along the first direction (F). According to any one of claims 1 to 12,
In the plate pin 3, the second pin mounting portion 5 is disposed at a position offset from the first pin mounting portions 5 in a direction orthogonal to the first direction F, and also the second pin mounting portion 5 A heat exchanger (100), characterized in that disposed in a position between the first fin mounting parts (5) in one direction (F).

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