CN220602294U - Fin and heat exchanger - Google Patents

Abstract

The application provides a fin and heat exchanger relates to air conditioner technical field. The fin structure is provided with a plurality of mounting holes and a plurality of water guide grooves which are arranged at intervals, and each mounting hole penetrates through the fin along the thickness direction of the fin; the plurality of water guide grooves are arranged at intervals along the first direction of the fins, one end of each single water guide groove along the axial direction of the water guide groove is defined as upstream flow, the other end of each single water guide groove is defined as downstream flow, and the groove depth and/or the groove width of at least part of the water guide grooves gradually decrease from the upstream flow to the downstream flow; the water guide grooves of part number are communicated with the mounting holes, and the water guide grooves of other part number are arranged at intervals with the mounting holes. A water guide groove is arranged outside the mounting hole to drain condensed water. The depth and/or width of the water guide groove gradually decrease from the upstream to the downstream, and the fluid channel gradually narrows, so that the flow speed of the condensed water is improved, the influence of the stagnation of the condensed water on heat dissipation is reduced, and the heat exchange efficiency of the fins is improved.

Description

Fin and heat exchanger

Technical Field

The application relates to the technical field of air conditioners, in particular to a fin and a heat exchanger.

Background

The fin type heat exchanger has wide application in the technical field of air conditioners. When the surface temperature of the fins is lower than the dew point temperature of surrounding air, part of water in the air is condensed on the surfaces of the fins to form condensed water, and the condensed water stays on the surfaces of the fins for a long time to prevent the heat transfer effect of the fins, so that the heat exchange efficiency is affected.

Disclosure of Invention

Based on this, it is necessary to provide a fin and a heat exchanger to reduce the stagnation of condensed water and improve the heat exchange efficiency.

A fin configured with a plurality of mounting holes and a plurality of water guide grooves arranged at intervals, each of the mounting holes penetrating through the fin in a thickness direction of the fin; the plurality of water guide grooves are arranged at intervals along the first direction of the fins, one end of each water guide groove in the axial direction of the water guide groove is defined as a flow upstream, the other end of each water guide groove is defined as a flow downstream, and the groove depth and/or the groove width of at least part of the water guide grooves gradually decrease from the flow upstream to the flow downstream; the part of the water guide tanks are communicated with the mounting holes, and the other part of the water guide tanks are arranged at intervals with the mounting holes.

It will be appreciated that the mounting holes are provided for mounting the heat exchange tubes. A water guide groove is arranged outside the mounting hole to drain condensed water. The depth and/or width of the water guide groove gradually decrease from the upstream to the downstream, so that the fluid channel gradually narrows, the flowing speed of the condensed water is improved, the condensed water can flow from the upstream to the downstream along the wall of the water guide groove under the action of gravity and flow out of the water guide groove, the condensed water can be discharged rapidly, the influence of the stagnation of the condensed water on heat dissipation is reduced, and the heat exchange efficiency of the fins is improved.

In one embodiment, the groove depth of the single water guide groove at the downstream of the flow is 10% -75% of the groove depth of the water guide groove at the upstream of the flow; and/or, the width of the single water guide groove at the upstream of the flow is 130% -170% of the width of the water guide groove at the downstream of the flow.

It is understood that the arrangement is favorable for forming a proper gradient on the groove wall of the water guide groove so as to facilitate the fluid to flow along the groove wall, properly narrow the water guide groove and facilitate the discharge of the condensed water while improving the flow rate of the condensed water.

In one embodiment, the fin has a first side and a second side along the thickness direction thereof, each of the water guide grooves is formed by recessing from the first side to the second side along the thickness direction of the fin, and the plurality of water guide grooves are respectively protruded from the second side; a spacing groove is defined between any two adjacent water guide grooves, and a plurality of water guide grooves and a plurality of spacing grooves form corrugated ruffles positioned on two sides of the fin along the second direction.

It will be appreciated that the arrangement is such that the outer wall of the water guide channel is convex on the second side of the fin so as to cooperate with the spacer channel to form a corrugated hem on the fin, enhancing structural strength.

In one embodiment, at least one of any two adjacent water guiding tanks is communicated with at least one mounting hole, and the mounting hole divides the corresponding water guiding tank into at least two water guiding tank sections; the mounting holes penetrate through the corresponding water guide grooves and the spacing grooves on two sides of the water guide grooves, and the mounting holes divide the corresponding spacing grooves into at least two spacing groove sections.

It is understood that the mounting hole can install the heat exchange tube, and the setting of guiding gutter and mounting hole intercommunication does benefit to the comdenstion water on the heat exchange tube and can flow to in the guiding gutter. The spacing groove communicates with the mounting hole such that a portion of the condensed water flows along the spacing groove.

In one embodiment, at least a part of the bottom parts of the spacing grooves are provided with turbulence holes, the turbulence holes penetrate through the spacing groove sections along the thickness direction of the fins, and the turbulence holes are distributed at intervals along the axial direction of the spacing grooves.

It can be appreciated that the provision of the flow disruption holes allows the flow of air past the fins to be disrupted, breaking the boundary layer of the air flow, and promoting heat dissipation. Meanwhile, the vortex is formed at the turbulent flow holes by the condensed water, and the discharge of the condensed water is quickened.

In one embodiment, along the width direction of the space groove, the minimum distance between the edge of the turbulence hole and the edge of the water guiding groove is a, and the minimum distance is 10% -25% of the groove width B of the space groove at the corresponding position of the turbulence hole.

It will be appreciated that this arrangement allows some of the condensate to flow around the drain holes, facilitating the formation of a narrower flow path, and accelerating the flow rate.

In one embodiment, along the axial direction of the spacing groove, the minimum distance C between the edge of the turbulence hole and the edge of the mounting hole is 5% -15% of the length D of the spacing groove section between any two adjacent mounting holes; and/or, along the axial direction of the spacing groove, the minimum distance E between the edge of the turbulence hole and the edge of the fin accounts for 5% -15% of the length F of the spacing groove section at the edge of the fin.

It will be appreciated that this arrangement allows some of the condensate to flow around the drain holes, facilitating the formation of a narrower flow path, and accelerating the flow rate.

In one embodiment, the shape of the flow disturbing holes is elliptical, circular or triangular.

It will be appreciated that different shapes have different turbulence and flow promoting effects.

In one embodiment, the turbulent flow hole is triangular in shape, and the vertex angle of the triangle is arranged near the upstream of the flow along the axial direction of the interval groove; or the turbulence hole is elliptic, the major axis of the ellipse is consistent with the width direction of the spacing groove, and the minor axis of the ellipse is consistent with the axial direction of the spacing groove; or, the major axis of the ellipse is consistent with the axial direction of the spacing groove, and the minor axis of the ellipse is consistent with the width direction of the spacing groove.

It can be understood that when the turbulence holes are arranged in a triangle, the condensate firstly contacts the vertex angle, the condensate channel outside the turbulence holes is gradually narrowed, and the condensate channel inside the turbulence holes is gradually widened, so that turbulence is formed. When the disturbing holes are arranged in an oval shape, the long axis is consistent with the width direction of the spacing groove, so that a plurality of disturbing holes are axially arranged along the spacing groove; when the long axis is consistent with the axial direction of the interval groove, the acceleration effect on the flow of the condensed water is prolonged.

The application also provides a heat exchanger, which comprises a heat exchange tube group, a water receiving disc and the fins; the heat exchange tube group comprises a plurality of communicated heat exchange tubes, and each heat exchange tube passes through the mounting holes of the fins; the water receiving disc is positioned below the heat exchange tube group along the second direction.

It can be understood that by using the fins, the condensed water on the fins can be conveniently discharged, and the water tray can receive and collect the condensed water, so that the interference of the condensed water on the heat exchanger is avoided.

Drawings

In order to more clearly illustrate the technical solutions of embodiments or conventional techniques of the present application, the drawings that are required to be used in the description of the embodiments or conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a top view of a partial structure of a fin provided herein;

FIG. 2 is a perspective view of a partial structure of a fin provided herein;

FIG. 3 is a side view of a partial structure of a fin provided herein;

fig. 4 is a perspective view of a heat exchanger provided herein.

Reference numerals: 100. a heat exchanger; 10. a fin; 101. a first side; 102. a second side; 11. a mounting hole; 12. a water guide groove; 121. a water guiding groove section; 1201. upstream of the flow; 1202. downstream of the flow; 13. a spacing groove; 131. spacing the trough sections; 132. a connection section; 14. a disturbance orifice; 20. a heat exchange tube group; 21. a heat exchange tube.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used in the description of the present application for purposes of illustration only and do not represent the only embodiment.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be a direct contact of the first feature with the second feature, or an indirect contact of the first feature with the second feature via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is less level than the second feature.

Unless defined otherwise, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. The term "and/or" as used in the specification of this application includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, the present application provides a fin 10, wherein the fin 10 is configured with a plurality of water guiding grooves 12 and a plurality of mounting holes 11 arranged at intervals, each mounting hole 11 is arranged to penetrate through the fin 10 along the thickness direction of the fin 10, and the plurality of water guiding grooves 12 are arranged at intervals along the width direction (or first direction) of the fin; one end of the single water guide groove 12 along the axial direction is defined as a flow upstream 1201, the other end is defined as a flow downstream 1202, and the groove depth and/or the groove width of at least part of the number of water guide grooves 12 gradually decreases from the flow upstream 1201 toward the flow downstream 1202; a part of the number of water guide grooves 12 communicates with the plurality of mounting holes 11, and the other part of the number of water guide grooves 12 is provided at a distance from the plurality of mounting holes 11.

In this way, the fins 10 are mainly matched with the heat exchange tubes 21, the heat exchange tubes 21 are arranged through the fins 10 by the mounting holes 11, and the medium (such as refrigerant and cooling water) in the heat exchange tubes 21 is transferred to the air through the fins 10 for heat exchange, so that heat exchange is realized. The installation holes 11 are arranged to facilitate the assembly of the fins 10 and the heat exchange tubes 21, and the hole walls thereof can form support for the heat exchange tubes 21. The water guide grooves 12 are arranged to promote the discharge of the condensed water on the fins 10 while the condensed water is formed on the surfaces of the fins 10, so that the obstruction of the condensed water to the heat transfer efficiency is reduced, and the heat exchange effect is improved. Specifically, when the fin 10 is placed, the upstream 1201 of the water guiding groove 12 is located at the upper end of the downstream 1202 of the opposite flow along the gravity direction, so that the condensed water flows from the upstream 1201 of the water guiding groove 12 to the downstream 1202 of the flow under the action of gravity, and the flow space in the water guiding groove 12 gradually decreases from the upstream 1201 of the flow to the downstream 1202 of the flow due to the gradual decrease of the groove depth and/or the groove width of the water guiding groove 12 from the upstream 1201 of the flow to the downstream 1202 of the flow, i.e. the water guiding groove 12 gradually narrows, so that the fluid pressure gradually decreases when the condensed water flows, the flow speed of the condensed water is faster, and the condensed water is promoted to rapidly drain out of the water guiding groove 12. Meanwhile, the arrangement is beneficial to the fact that part of the groove walls of the water guide groove 12 have a certain gradient, the condensed water is guided and converged, and the condensed water is discharged. In summary, the above arrangement discharges the condensed water to reduce the retention of the condensed water, which is beneficial to improving the heat dissipation effect of the fins 10.

For convenience of explanation, the present application uses a first direction as an x-axis direction, uses a second direction as a y-axis direction, and uses a thickness direction of the fin 10 as a z-axis direction, wherein the first direction is a width direction of the water guiding groove 12, the groove width is a dimension of the water guiding groove 12 along the first direction, the groove depth is a dimension of the water guiding groove 12 along the thickness direction of the fin 10, and the water guiding groove 12 extends along the second direction, namely the second direction is an axial direction of the water guiding groove 12.

In an alternative embodiment, the groove depth of the single water guide groove 12 at the downstream side 1202 of the flow is 10% -75% of the groove depth of the water guide groove 12 at the upstream side 1201 of the flow. In this way, the depth of the groove at the downstream 1202 of the water guiding groove 12 is shallower than the depth of the groove at the upstream 1201 of the water guiding groove 12, so that the bottom surface of the water guiding groove 12 can form a certain gradient, which is beneficial to guiding the flow of the condensed water, and is convenient to form a flow space gradually decreasing from the upstream 1201 of the water guiding groove 12 to the downstream 1202 of the water guiding groove, thereby promoting the discharge of the condensed water. In particular embodiments, the groove depth of the water guide 12 at the downstream 1202 flow is 10%, 50% or 75% of the groove depth of the water guide 12 at the upstream 1201 flow.

In a further embodiment, the channel width of the single channel 12 upstream 1201 accounts for 130% -170% of the channel width of the channel 12 downstream 1202. In this way, the width of the water guiding groove 12 at the flow upstream 1201 is wider than that of the water guiding groove at the flow downstream 1202, and the side wall of the water guiding groove 12 can form a certain gradient, which is favorable for guiding the flow of the condensed water, and is favorable for forming a flow space of the water guiding groove 12, wherein the flow upstream 1201 of the water guiding groove 12 is gradually reduced towards the flow downstream 1202, so as to promote the discharge of the condensed water. In particular embodiments, a portion of the channel 12 has a channel width 1201 upstream of the flow that is 130%, 150% or 170% of the channel width of the channel 12 downstream 1202 of the flow.

As shown in fig. 1 to 3, the fin 10 has a first side 101 and a second side 102 in the thickness direction thereof, and each water guide groove 12 is formed recessed from the first side 101 toward the second side 102 in the thickness direction of the fin 10, with the notch of the water guide groove 12 facing the first side 101. The fins 10 define a spacing groove 13 between any two adjacent water guiding grooves 12 on the second side 102. In this way, the outer wall of the water guiding groove 12 is protruded on the surface of the fin 10 at the second side 102 so as to form the spacing groove 13. The structure of the plurality of water guide grooves 12 and the structure of the plurality of spacing grooves 13 jointly enable two sides of the fin 10 along the y-axis direction (the second direction) to be formed with corrugated ruffles extending along the x-axis direction (the first direction), so that the fin 10 can disperse stress when being acted by external force, the structural strength of the fin 10 is enhanced, and the fin 10 is not easy to deform.

In some embodiments, the water guiding groove 12 is provided in a cambered surface structure, and the bottom of the spacing groove 13 is in a planar structure. The cambered surface structure can reduce stress concentration and flow resistance, and is beneficial to condensate water flow; the processing of the plane structure is simple and easy to form. In other embodiments, the water guiding groove 12 and the spacing groove 13 may be configured to have an arc surface structure, a plane structure, or other shapes, so long as the water guiding effect of the water guiding groove 12 is satisfied.

Next, the installation of the mounting hole 11 will be described.

As shown in fig. 1 and 2, the respective mounting holes 11 are arranged at intervals; at least one of any two adjacent water guide grooves 12 is communicated with at least one mounting hole 11, and the mounting hole 11 divides the corresponding water guide groove 12 into at least two water guide groove sections 121. In this way, since the mounting holes 11 are used for mounting the heat exchange tubes 21, the water guide grooves 12 are communicated with the mounting holes 11, so that condensed water at the positions, close to the fins 10, on the heat exchange tubes 21 can flow along the water guide grooves 12, and the retention of the condensed water is further reduced. In some embodiments, the plurality of mounting holes 11 are arranged at intervals in the first direction and the second direction so as to facilitate the mounting of the heat exchange tube 21.

As shown in fig. 1, specifically, a plurality of mounting holes 11 communicate with a part of the number of water guide grooves 12, and completely disconnect the water guide groove 12 with the mounting holes 11 communicated into at least two water guide groove sections 121; the two sides of the water guide groove 12 along the width direction of the self groove are respectively provided with a spacing groove 13, the sum of the groove widths of two adjacent spacing grooves 13 at the mounting hole 11 and the groove width of the water guide groove 12 between the two adjacent spacing grooves is larger than the aperture size of the mounting hole 11, so that the part of the spacing groove 13 is also communicated with the mounting hole 11, namely the mounting hole 11 also divides the spacing groove 13 into at least two spacing groove sections 131, and a connecting section 132 is also reserved between the two adjacent spacing groove sections 131 along the axial direction of the spacing groove 13 so as to connect the two.

In some embodiments, the fin 10 is also provided with a baffle hole 14, the baffle hole 14 is explained below.

As shown in fig. 1 and 2, in an alternative embodiment, the bottom of each spacer groove 13 is configured as a planar structure, and at least a part of the spacer groove sections 131 of the spacer grooves 13 are configured with the flow-disturbing holes 14, the flow-disturbing holes 14 penetrate the fins 10 in the thickness direction of the fins 10, and the flow-disturbing holes 14 are disposed so as to avoid the mounting holes 11. Thus, the bottom of the spacer groove 13 is provided as a flat surface to facilitate the processing of the disturbance hole 14. By arranging the turbulence holes 14, on one hand, when the condensed water flows through the turbulence holes 14, the condensed water flows along the surface of the fins 10 (namely the bottom of the spacing groove 13) outside the turbulence holes 14 and the inner wall in the turbulence holes 14, and the speed of the condensed water on the surface of the fins 10 outside the turbulence holes 14 is inconsistent with that of the walls of the turbulence holes 14, so that a vortex is formed, the condensed water flows in a turbulent state, and the flowing speed of the condensed water is accelerated. On the other hand, the arrangement of the turbulence holes 14 can also cause turbulence of the air flow flowing around the fins 10, which is beneficial to breaking the air flow boundary layer and promoting heat exchange.

In one embodiment, along the width direction of the spacing groove 13, the minimum distance between the edge of the turbulence hole 14 and the edge of the water guiding groove 12 is A, and the minimum distance is 10% -25% of the groove width B of the spacing groove 13 at the corresponding position of the turbulence hole 14. Wherein the groove width B, that is, the groove width of the spacing groove is along the groove width direction of the spacing groove, at the position of the minimum distance A. Thus, the area of the bottom of the interval groove 13 through which water flows at the position of the disturbing hole 14 is smaller, the water flow channel is narrower, the water flow speed is improved, and the water discharge is accelerated. In a specific embodiment, along the width direction of the spacing groove 13, the minimum distance a between the edge of the turbulence hole 14 and the edge of the water guiding groove 12 is 10%, 15% or 25% of the groove width of the spacing groove 13 at the corresponding position of the turbulence hole 14.

In a further embodiment, the turbulence holes 14 are provided in a plurality, and the plurality of turbulence holes 14 are axially spaced along the spacing groove 13 to enhance the turbulence effect.

In a further embodiment, the minimum distance C between the edge of the flow disturbing hole 14 and the edge of the mounting hole 11 is 15% -25% of the length D of the spacing groove segment 131 between any two adjacent mounting holes 11 along the axial direction of the spacing groove 13. At this time, the length D of the spacer groove segment 131 is the minimum distance D between any adjacent two of the mounting holes 11 in the axial direction of the spacer groove 13. Therefore, on the basis of ensuring the structural strength of the fin 10, the distance between the disturbing holes 14 and the mounting holes 11 can be shortened, the flow direction and the flow speed of the fluid can be changed, the fluid can form turbulence, and the drainage of condensed water can be accelerated. In a specific embodiment, the minimum distance C between the edge of the disturbing hole 14 and the edge of the mounting hole 11 along the axial direction of the spacing groove 13 is 15%, 20% or 25% of the length D of the spacing groove segment 131 between any two adjacent mounting holes 11.

In a further embodiment, the minimum distance E of the edge of the baffle hole 14 from the edge of the fin 10, along the axial direction of the spacer groove 13, is 20% -30% of the length F of the spacer groove segment 131 at the edge of the fin 10. At this time, the length F of the spacer groove segment 131 is the minimum distance from the mounting hole 11 near the edge of the fin 10 to the edge of the fin 10 in the spacer groove axial direction. In this way, the region where the flow disturbing holes 14 are provided is defined, and as many flow disturbing holes 14 as possible can be provided while ensuring the strength of the fin 10. In particular embodiments, the minimum distance E of the baffle holes 14 from the edge of the fin 10 along the axial direction of the spacer grooves 13 is 20%, 25% or 30% of the length F of the spacer groove segment 131 located at the edge of the fin 10.

In an alternative embodiment, the shape of the disturbing hole 14 may be a circular hole, and the hole wall area of the circular hole is larger, so that the flow velocity of the condensed water is reduced, a larger speed difference and a larger pressure difference are formed between the disturbed hole and the condensed water outside the hole, and the fluid flowing direction in the disturbing hole 14 is inconsistent with the fluid flowing direction outside the disturbing hole 14, so that the effect of forming vortex by the condensed water can be promoted, namely turbulent flow can be formed, and the flowing of the condensed water is promoted.

In other embodiments, the shape of the turbulence hole 14 may be configured as a triangle, and the apex angle of the triangle is disposed near the flow upstream 1201 along the axial direction of the spacer groove 13, so that the condensate water first contacts the apex angle of the triangle when flowing from the flow upstream 1201 to the flow downstream 1202, which causes the channel for fluid flow outside the turbulence hole 14 to gradually decrease in the fluid flow direction, the fluid velocity gradually increases, and the pressure gradually decreases; the space in the turbulence hole 14 is gradually increased, so that the fluid speed in the turbulence hole 14 is gradually reduced, the fluid pressure is gradually increased, and the speed difference and the pressure difference are respectively and rapidly increased, thereby being beneficial to forming more severe turbulence.

Of course, the shape of the turbulence holes 14 may be also configured in an elliptical shape, the major axis of the elliptical shape being consistent with the groove width direction of the spacing groove 13, and the minor axis of the elliptical shape being consistent with the axial direction of the spacing groove 13, so that more turbulence holes 14 may be provided along the axial direction of the spacing groove 13 to enhance the turbulence effect. Along the axial direction of the interval groove 13, the size of the disturbing hole 14 is firstly increased and then decreased, so that the fluid channel outside the disturbing hole 14 is firstly decreased and then increased, and similar to the embodiment, the pressure of the fluid flow velocity inside and outside the disturbing hole 14 is different, and the condensed water forms turbulent flow. Wherein, because the major axis of the ellipse is longer than the minor axis, the channel outside the disturbing hole 14 where the major axis of the ellipse is located is very narrow, which is beneficial to promoting more severe turbulence and facilitating the drainage of condensed water. In other embodiments, the shorter axis of the ellipse is consistent with the width direction of the interval groove 13, and the longer axis is consistent with the axial direction of the interval groove 13, so that the length of turbulence is longer, which is beneficial to promoting the drainage of condensed water.

As shown in fig. 4, the present application further provides a heat exchanger 100 including a heat exchange tube group 20, a water pan, and the above-described fins 10; the heat exchange tube group 20 includes a plurality of heat exchange tubes 21 in communication, each heat exchange tube 21 passing through the mounting hole 11 of the fin 10; the water receiving tray is located below the heat exchange tube group 20 in the second direction, that is, the water receiving tray is located close to the flow downstream 1202 of the water guide grooves 12 of the fins 10 and away from the flow upstream 1201 of the water guide grooves 12 of the fins 10.

In this way, the heat exchange tube 21 is installed on the fin 10 through the installation hole 11, the refrigerant flows through the heat exchange tube 21, the heat of the refrigerant is transferred to the fin 10 through the wall of the heat exchange tube 21, the fin 10 exchanges heat and transfers heat with air, when the surface temperature of the fin 10 is lower than the dew point temperature of ambient air, water vapor is condensed into condensed water on the surface of the fin 10, the fin 10 can flow the condensed water along the water guide groove 12 through the arrangement of the water guide groove 12, the flowing downstream 1202 of the water guide groove 12 is arranged near a water receiving disc so that the condensed water flows from the flowing upstream 1201 to the flowing downstream 1202, and then flows from the flowing downstream 1202 to the water receiving disc, and the arrangement of the water receiving disc is convenient for collecting and discharging the condensed water out of the heat exchanger 100.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of the present application is to be determined by the following claims.

Claims (10)

1. A fin, characterized in that the fin (10) is configured with:

a plurality of mounting holes (11) arranged at intervals, wherein each mounting hole (11) penetrates through the fin (10) along the thickness direction of the fin (10);

a plurality of water guide grooves (12) arranged at intervals along a first direction of the fin (10), wherein one end of each water guide groove (12) along the axial direction is defined as a flow upstream (1201), the other end is defined as a flow downstream (1202), and the groove depth and/or the groove width of at least part of the water guide grooves (12) gradually decrease from the flow upstream (1201) to the flow downstream (1202); a part of the water guide grooves (12) are communicated with the mounting holes (11), and the other part of the water guide grooves (12) are arranged at intervals with the mounting holes (11).

2. The fin of claim 1, wherein a groove depth of a single said water guide groove (12) downstream (1202) of said flow is 10% -75% of a groove depth of said water guide groove (12) upstream (1201) of said flow; and/or the number of the groups of groups,

the single water guide groove (12) has a groove width of 130-170% of the groove width of the water guide groove (12) at the upstream (1201) of the flow.

3. The fin according to claim 1, wherein the fin (10) has a first side (101) and a second side (102) in a thickness direction thereof, each of the water guide grooves (12) is formed recessed from the first side (101) toward the second side (102) in the thickness direction of the fin (10), and a plurality of the water guide grooves (12) are each provided protruding from the second side (102); a spacing groove (13) is defined between any two adjacent water guide grooves (12), and a plurality of water guide grooves (12) and a plurality of spacing grooves (13) form corrugated ruffles positioned on two sides of the fin (10) along the second direction.

4. A fin according to claim 3, wherein at least one of any adjacent two of said water guiding channels (12) is in communication with at least one of said mounting holes (11), said mounting holes (11) dividing the corresponding water guiding channel (12) into at least two water guiding channel segments (121); the installation holes (11) are arranged through the corresponding water guide grooves (12) and the spacing grooves (13) arranged on two sides of the water guide grooves (12), and the installation holes (11) divide the corresponding spacing grooves (13) into at least two spacing groove sections (131).

5. The fin according to claim 4, wherein at least a part of the number of the spacer grooves (13) is configured with turbulence holes (14), the turbulence holes (14) being provided through the spacer groove segments (131) in the thickness direction of the fin (10), the turbulence holes (14) being arranged at intervals along the axial direction of the spacer grooves (13).

6. The fin according to claim 5, wherein, along the width direction of the space groove (13), the minimum distance between the edge of the turbulence hole (14) and the edge of the water guiding groove (12) is a, which is 10% -25% of the groove width B of the space groove (13) at the corresponding position of the turbulence hole (14).

7. The fin according to claim 5, wherein a minimum distance C of the edge of the spoiler hole (14) from the edge of the mounting hole (11) in the axial direction of the spacer groove (13) is 5% -15% of the length D of the spacer groove segment (131) between any adjacent two of the mounting holes (11); and/or, along the axial direction of the spacing groove (13), the minimum distance E between the edge of the turbulence hole (14) and the edge of the fin (10) accounts for 5% -15% of the length F of the spacing groove section (131) at the edge of the fin (10).

8. The fin according to claim 5, wherein the turbulence holes (14) are provided in an elliptical, circular or triangular shape.

9. The fin according to claim 8, wherein said turbulating holes (14) are triangular in shape, the apex angle of said triangle being disposed axially of said spacing groove (13) near said flow upstream (1201); or,

the turbulence hole (14) is elliptical, the major axis of the ellipse is consistent with the groove width direction of the spacing groove (13), and the minor axis of the ellipse is consistent with the axial direction of the spacing groove (13); or, the major axis of the ellipse is consistent with the axial direction of the spacing groove (13), and the minor axis of the ellipse is consistent with the groove width direction of the spacing groove (13).

10. A heat exchanger, comprising:

the fin (10) of any one of claims 1-9;

a heat exchange tube group (20) including a plurality of heat exchange tubes (21) connected, each of the heat exchange tubes (21) passing through a mounting hole (11) of the fin (10);

and the water receiving disc is positioned below the heat exchange tube group (20) along the second direction.