Air conditioner

Abstract

The utility model discloses an air conditioner, and belongs to the technical field of air conditioners. The air conditioner comprises a machine shell, a draught fan and a heat exchanger. The fan and the heat exchanger are arranged in the shell; the windward side of the heat exchanger faces the fan; the heat exchanger comprises a heat exchange tube and fins; the fins are provided with pipe holes for the heat exchange pipes to penetrate through. First curves are defined on the edges, facing the windward side of the heat exchanger, of the fins; the first curve is arranged along the height direction of the heat exchanger; the first curve comprises a concave arc line and a convex arc line, and the arc center of the concave arc line is located on the outer side of the fin; the arc centers of the convex arc lines are located on the fins, and the convex arc lines and the concave arc lines are mutually connected and are in smooth transition; the convex arc line is located on a circle with the center of the pipe hole as the circle center and the radius being R. According to the air conditioner provided by the invention, the edges of the fins are designed to be in the wave shape by deleting the low-efficiency heat exchange areas in the fins, so that the width of the fins is prevented from being increased, and the heat exchange effect of the heat exchanger is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, in particular to an air conditioner. BACKGROUND

[0002] As an important component of an air conditioner, the performance of a heat exchanger directly affects the heat transfer efficiency of the system. At present, fin heat exchangers are widely used in air conditioners due to their compact structure and large heat exchange area.

[0003] In some air conditioners, in order to increase the heat exchange efficiency of the fin heat exchanger, the outer edge of the windward side of the fin is designed in a wavy shape. Although this design increases the heat exchange area, the existing wavy fin design usually directly widens the original fin to achieve a wavy structure. The widening of the fin leads to an increase in the amount of material used, so that the increased heat exchange efficiency does not form a reasonable proportion with the material cost, resulting in low utilization. Moreover, the excessively wide fin structure significantly increases the airflow resistance, leading to a decrease in the supply air efficiency, which in turn weakens the overall heat exchange performance. Although the wavy design can theoretically improve the local heat exchange efficiency, the actual operation may make the system efficiency lower than that before the improvement due to the excessive wind resistance. CONTENT OF THE UTILITY MODEL

[0004] In view of the deficiencies in the related art, the present application provides an air conditioner that reduces the low-efficiency heat exchange area in the fin to design the edge of the fin in a wavy shape, thereby avoiding an increase in the fin width and increasing the heat exchange effect of the heat exchanger.

[0005] The present application provides an air conditioner, comprising:

[0006] A cabinet including an air return port and an air outlet port, the air return port and the air outlet port being provided on the outer periphery of the cabinet;

[0007] A fan provided inside the cabinet for sucking air outside the cabinet into the cabinet through the air return port and / or outputting air inside the cabinet to the outside of the cabinet through the air outlet port;

[0008] A heat exchanger provided inside the cabinet for heat exchange of air passing through the heat exchanger; the heat exchanger comprises:

[0009] A heat exchange tube in which a refrigerant flows;

[0010] A fin provided with a tube hole for the heat exchange tube to pass through; an edge of the fin facing the windward side of the heat exchanger is defined to form a first curve; the first curve is arranged along the height direction of the heat exchanger; the first curve comprises:

[0011] A concave arc line, the arc center of the concave arc line being located on the outer side of the fin;

[0012] The convex arc is located on a circle with the center of the tube hole as the center and R as the radius.

[0013] The convex arc is located on a circle with the center of the tube hole as the center and R as the radius, so that the fin retains a high-efficiency heat exchange area; the concave arc is arranged to connect a plurality of convex arcs, so that the outer edge of the fin is smooth, thereby reducing the wind resistance when the airflow passes through the fin; and the arc center of the concave arc is located on the outer side of the fin, so that the outer edge of the fin is designed as a wave-shaped structure by cutting the low-efficiency heat exchange area of the fin, thereby avoiding an increase in the width of the fin.

[0014] In some embodiments, the circle on which the convex arc is located is circumscribed with the circle on which the concave arc is located.

[0015] In the technical solution, the convex arc and the concave arc are respectively located on different circles and are circumscribed, so that a natural and smooth transition between the concave arc and the convex arc in the first curve can be achieved, the airflow can flow more smoothly through the fin, the wind resistance is reduced, the energy loss is reduced, and the working efficiency of the fan and the operation efficiency of the entire air conditioner are improved.

[0016] In some embodiments, the radii of the convex arc and the concave arc are the same.

[0017] In the technical solution, by making the radii of the convex arc and the concave arc the same, the area outside the high-efficiency heat exchange area can be small on the basis of ensuring the smooth shape of the outer edge of the fin, the area of the low-efficiency heat exchange area can be reduced as much as possible while the smooth outer edge of the fin reduces the wind resistance, and the overall heat exchange efficiency of the heat exchanger is improved, and the heat exchange performance of the air conditioner is optimized.

[0018] In some embodiments, the distance D from the windward side to the leeward side of the heat exchanger and the radius R of the convex arc satisfy: D = 2R.

[0019] In the technical solution, the distance D from the windward side to the leeward side of the heat exchanger and the radius R of the convex arc satisfy: D = 2R, so that the width of the fin is maintained at a relatively small and appropriate size, the fin can have sufficient heat exchange area to participate in heat exchange, the wind resistance is not increased due to the excessively wide fin or the material is not wasted, the airflow passing performance is optimized while the heat exchange efficiency is ensured, and the production cost is reduced.

[0020] In some embodiments, the fin is cut from a metal plate.

[0021] The fin is cut from a metal plate, which can be applied to mass production of fins, improve fin production efficiency, accurately control the size of the fin, ensure the size accuracy and consistency of each fin, and improve the quality of the air conditioner product.

[0022] In some embodiments, the compensation coefficient δ of the fin cutting, the distance L between the centers of adjacent tube holes, and the radius R of the convex arc line satisfy: L-δ=2R.

[0023] In the technical solution, by reasonably considering the relationship between the compensation coefficient δ of the fin cutting, the distance L between the centers of adjacent tube holes, and the radius R of the convex arc line, it can be ensured that the size of the cut fin meets the design requirements in the actual production process, so that the shape of the outer edge of the fin after being installed on the heat exchange pipe can meet the performance requirements of efficient heat exchange and low wind resistance, and the stable and efficient operation of the air conditioner is ensured.

[0024] In some embodiments, the first curve is a sine function curve.

[0025] In the technical solution, by locating the first curve on the sine function curve, a scientific and accurate mathematical model is provided for the shape of the windward side edge of the fin; by adjusting the parameters (such as amplitude A and wave number ω) of the sine function, optimization calculation can be performed according to the specific air supply direction and heat radiation efficiency, so that the fin shape is more suitable for actual operation requirements, further improves the flow uniformity of air flow on the fin surface, strengthens the heat exchange effect, and optimizes the performance of the air conditioner under different working conditions.

[0026] In some embodiments, the edge of the fin towards the leeward side of the heat exchanger is defined to form a second curve; the second curve is arranged along the height direction of the heat exchanger; and the second curve is the same as the first curve.

[0027] In the technical solution, by making the second curve of the leeward side edge of the fin the same as the first curve of the windward side, in the actual assembly process, the installation direction of the fin does not need to be considered, which not only reduces the assembly difficulty of the fin, shortens the assembly time, improves the assembly efficiency, is conducive to mass production of the air conditioner, effectively reduces the production cost, and also reduces the problem of performance degradation of the product caused by the wrong assembly direction.

[0028] In some embodiments, the second curve and the first curve are symmetrically arranged about a middle line axis of the fin arranged along the height direction of the fin.

[0029] In addition, the application also provides an air conditioner,

[0030] The shell comprises an air return inlet and an air outlet.

[0031] A fan, located inside the casing, is used to draw air from outside the casing into the casing through the return air inlet, and / or to output air from inside the casing to the outside of the casing through the air outlet.

[0032] A heat exchanger, located inside the casing, is used to exchange heat with the air passing through it; the airflow side of the heat exchanger faces the fan or return air inlet; the heat exchanger includes:

[0033] Heat exchange tubes, through which refrigerant flows;

[0034] The fins have tube holes for heat exchange tubes to pass through; the edge of the fin facing the windward side of the heat exchanger is wavy along the height direction of the heat exchanger; the edge of the fin facing the windward side has multiple notches, which are located between two adjacent tube holes in the height direction of the fin, and the length of the notches in the height direction gradually decreases from the windward side of the fin to the leeward side.

[0035] This technical solution enhances the heat exchanger's heat exchange effect by making the edge of the fin facing the windward side of the heat exchanger wavy along the height direction of the heat exchanger, and by making the distance from any point on the outer edge of the windward side of the fin to the centerline in the length direction of the fin less than or equal to the thermal radiation radius of the heat exchange tube. This ensures that the farthest distance from the outer edge of the fin to the corresponding tube hole is within the high-efficiency heat exchange zone.

[0036] In the above embodiments, an air conditioner significantly improves heat exchange efficiency by designing the outer edge of the fins on the windward side in a wave-like shape, retaining high-efficiency heat exchange zones and eliminating inefficient heat exchange zones. Its wave-like outer edge design not only increases the heat exchange area but also interferes with the airflow boundary layer, promoting air mixing and further enhancing the heat exchange effect. In terms of wind resistance control, the wave structure with smooth transitions between concave and convex arcs significantly reduces airflow resistance, minimizes energy loss, and improves fan efficiency. This increases the heat exchange area of ​​the fins. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of one embodiment of the air conditioner in this application;

[0038] Figure 2 This is a structural schematic diagram of another embodiment of the air conditioner in this application from another angle;

[0039] Figure 3 This is a schematic diagram of the internal structure of the housing in one embodiment of the air conditioner in this application;

[0040] Figure 4 This is a cross-sectional schematic diagram of one embodiment of the air conditioner in this application;

[0041] Figure 5 This is a schematic diagram of the airflow path in one embodiment of the air conditioner in this application;

[0042] Figure 6This is a schematic diagram of the heat exchanger in one embodiment of the air conditioner in this application;

[0043] Figure 7 This is a schematic diagram of the fin structure in one embodiment of the air conditioner in this application;

[0044] Figure 8 This is a structural schematic diagram of the fins in one embodiment of the air conditioner in this application compared with fins in the prior art;

[0045] Figure 9 This is a schematic diagram showing the dimensions of the fins in one embodiment of the air conditioner in this application;

[0046] Figure 10 This is a schematic diagram of the first curve in a plane coordinate system in one embodiment of the air conditioner in this application.

[0047] In the diagram, 100 is the casing; 200 is the heat exchanger; 300 is the volute; 400 is the fan; and 500 is the drip tray.

[0048] 101. Air outlet; 102. Air return outlet;

[0049] 110. Partition;

[0050] 210. Fins; 220. Heat exchange tubes;

[0051] 211. Tube hole; 212. First curve; 213. Second curve; 214. Boundary circle; 215. High-efficiency heat exchange zone; 216. Transition zone; 217. Outer edge of conventional fins;

[0052] 2121. Concave arc; 2122. Convex arc. Detailed Implementation

[0053] To make the objectives and implementation methods of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the exemplary embodiments described are only some embodiments of this application, and not all embodiments.

[0054] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0055] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar or related objects or entities, and do not necessarily imply a specific order or sequence, unless otherwise specified. It should be understood that such terms are interchangeable where appropriate.

[0056] The terms “include” and “have”, and any variations thereof, are intended to cover but not exclusively include, for example, a product or device that includes a range of components is not necessarily limited to all of the components that are clearly listed, but may include other components that are not clearly listed or that are inherent to such product or device.

[0057] The air conditioner provided in this application can have various implementation forms, including ducted air conditioners, indoor air conditioners, and outdoor air conditioners. For example... Figures 1-5 This is one specific embodiment of the air conditioner described in this application.

[0058] like Figure 1 As shown, the air conditioner provided in this application is a ducted air conditioner, which includes a housing 100. The housing 100 is used to form the overall appearance of the ducted air conditioner. The top and bottom of the housing 100 are opposite ends, and the height direction of the housing 100 is from the top to the bottom. The left and right sides of the housing 100 are opposite sides, and the length direction of the housing 100 is from the left to the right. The front and rear sides of the housing 100 are opposite sides, and the thickness direction of the housing 100 is from the front to the rear.

[0059] like Figure 1 As shown, an air outlet 101 is formed on the housing 100. The air outlet 101 is located on the peripheral wall of the housing 100 and communicates with the interior of the housing 100. The air inside the housing 100 is output to the outside of the housing 100 through the air outlet 101.

[0060] like Figure 2 As shown, a return air vent 102 is formed on the housing 100. The return air vent 102 is located on the peripheral wall of the housing 100 and is connected to the interior of the housing 100. Air from outside the housing 100 enters the interior of the housing 100 through the return air vent 102.

[0061] Air outlet 101 and return air outlet 102 are respectively provided on the two side walls of the housing 100 along the thickness direction of the housing 100, wherein the air outlet 101 is located on the front side of the housing 100 and the return air outlet 102 is located on the rear side of the housing 100.

[0062] like Figure 3 As shown, a partition 110 is provided inside the housing 100, which divides the interior of the housing 100 into a first cavity and a second cavity. The first cavity and the second cavity are arranged along the thickness direction of the housing 100. The first cavity is connected to the air outlet 101, and the second cavity is connected to the air return outlet 102.

[0063] The partition 110 is provided with a connecting port, which is arranged along the thickness direction of the housing 100 and is used to connect the first cavity and the second cavity.

[0064] like Figures 3-5 As shown, the air conditioner includes a fan 400 located in the second cavity. The fan 400 is used to draw air from outside the housing 100 into the housing 100 through the return air inlet 102, and / or to output air from inside the housing 100 to the outside of the housing 100 through the air outlet 101. Compared to the air outlet 101, the fan 400 is positioned closer to the return air inlet 102 so that the fan 400 can better drive the airflow.

[0065] In some embodiments, such as Figure 3 As shown, there are two fans 400, which are arranged along the length of the casing 100 to increase the air intake of the air conditioner, thereby increasing the cooling or heating effect of the air conditioner.

[0066] like Figures 2-5 As shown, the air conditioner includes a volute 300, which is located inside the second cavity and is mounted on the side of the partition 110 facing the second cavity. A fan 400 is disposed inside the volute 300 so that the volute 300 guides the airflow, reduces airflow turbulence and energy loss, and improves the efficiency of the fan 400.

[0067] A volute inlet is formed on the volute 300, and the volute inlet is located on the side wall of the volute 300 along the thickness direction of the housing 100; air enters the volute 300 through the volute inlet; a volute outlet is formed on the volute 300, and the volute outlet is set towards the return air port 102, and air in the volute 300 leaves the volute 300 through the volute outlet.

[0068] like Figure 1 , Figures 3-5 As shown, the air conditioner includes a heat exchanger 200, which is located in the first cavity and is used to exchange heat with the air entering the first cavity. The windward side of the heat exchanger 200 is arranged facing the fan 400, and the leeward side of the heat exchanger 200 is arranged facing the air outlet 101.

[0069] like Figure 4 As shown, the heat exchanger 200 is inclined from top to bottom along the height direction of the casing 100 towards the return air inlet 102 to increase the contact area between the heat exchanger 200 and the air, thereby increasing the heat exchange area of ​​the heat exchanger 200, and thus improving the heat exchange efficiency of the air conditioner and increasing the amount of air exchanged.

[0070] like Figure 4 As shown, a water collection tray 500 is provided in the first cavity. The water collection tray 500 is located below the first cavity to collect the condensate generated by the heat exchanger 200 for cooling and dehumidification, so as to prevent the condensate from overflowing in the air conditioner and avoid damaging the internal parts of the air conditioner.

[0071] like Figure 6As shown, the heat exchanger 200 includes a heat exchange tube 220, in which refrigerant flows; when the air conditioner is cooling, the refrigerant absorbs heat from the room; when the air conditioner is heating, the refrigerant releases heat to the room.

[0072] like Figure 7 and Figure 8 As shown, the heat exchanger 200 includes fins 210, each fin having a tube hole 211 for the heat exchange tube 220 to pass through, thereby increasing the contact area between the heat exchange tube 220 and the air. Multiple fins 210 are arranged along the direction of the heat exchange tube 220, so that the heat exchange tube 220 passes through multiple fins 210 simultaneously, thereby increasing the contact area between the heat exchange tube 220 and the air.

[0073] Each fin 210 is provided with multiple tube holes 211, which are arranged along the height direction of the fin 210. The heat exchange tubes 220 are interwoven in the multiple tube holes 211 to increase the contact area between the heat exchange tubes 220 and the fins 210, increase the heat exchange effect between the refrigerant and the air, and also increase the firmness of the connection between the heat exchange tubes 220 and the fins 210.

[0074] In some embodiments, a plurality of tube holes 211 are arranged in a row along the length of the fin 210 so that the fluid flowing through the tube holes 211 can be distributed more evenly on both sides of the fin 210, avoiding local flow rates that are too high or too low, thereby promoting uniform heat conduction and dissipation on the fin 210 and greatly improving heat transfer efficiency.

[0075] In some embodiments, the center of the tube hole 211 is located on the center line of the fin 210 along the length direction of the fin 210, so as to ensure the symmetry of the force on the fin 210, reduce the risk of deformation caused by uneven force, and enable the fin 210 to maintain a good structural state during long-term use.

[0076] In related technologies, some fins 210 have a wavy outer edge on the windward side. This wavy shape continuously disrupts and damages the airflow boundary layer on the fin 210 surface, promoting more intense air mixing and turbulence. The wavy shape also increases the surface area of ​​the fin 210 on the windward side. For the same windward area, a wavy outer edge provides a larger heat transfer area than a straight outer edge, offering more space for heat transfer and thus improving heat exchange capacity.

[0077] The wavy shape can guide the airflow, allowing it to flow more smoothly along the surface of the fin 210 and reducing airflow separation and vortex areas. Compared to sharp right angles or straight edges, the wavy outer edge can mitigate the impact of the airflow and reduce the pressure loss of the airflow at the leading edge of the fin 210, thereby reducing the overall flow resistance.

[0078] The wavy outer edge helps optimize the pressure distribution on the surface of fin 210. As airflow passes through fin 210, the wavy shape makes the pressure change more gradual, avoiding areas of excessively high or low pressure. This helps reduce airflow turbulence and further reduces flow resistance.

[0079] However, in the existing technology, the wavy fin 210 is directly widened on the basis of the original fin 210 to achieve the wavy structure. The unreasonable design of the wavy structure of the fin 210 may make the energy efficiency of the air conditioner lower than the level before the improvement in actual operation.

[0080] According to Stefan Boltzmann's law: Q = εσA(T) 4 -T0 4 ), where Q: radiative heat flux per unit time (W); ε: emissivity (emissivity, 0–1) of the material; σ: Stefan-Boltzmann constant (5.67 × 10⁻⁶). -8 W / m 2 ·K 4 A: Radiation area (m²) 2 T: Surface temperature of the object (K); T0: Ambient temperature (K).

[0081] Simplified to the surface of fin 210 (two-dimensional plane): In the two-dimensional model, the attenuation of radiative heat flux follows an inverse linear relationship, and the diffusion area of ​​radiative energy expands linearly (e.g., diffuses along a straight line). Therefore, the heat flux density decreases inversely with the increase of distance r.

[0082] The heat transferred from the heat exchange tube 220 diffuses to the surroundings in the fins 210 primarily through thermal conduction. Within a circle with radius R centered on the center of the tube hole 211, heat transfer from the heat exchange tube 220 to the fins 210 and then to the air is relatively direct. Furthermore, because the distance from any point within the circle to the heat exchange tube 220 is relatively short, the heat is concentrated, resulting in a larger temperature gradient, which facilitates rapid heat transfer to the air. However, outside the circle, as the distance from the center of the tube hole 211 increases, more heat is lost during diffusion within the fins 210, the temperature gradient gradually decreases, the driving force for heat exchange between the refrigerant and the air diminishes, and the heat exchange effect deteriorates.

[0083] For ease of description, in this embodiment, the circle with the center of the pipe hole 211 as the center and the radius R is called the boundary circle 214, the area inside the boundary circle 214 is called the high-efficiency heat exchange zone 215, and the area outside the boundary circle 214 is called the low-efficiency heat exchange zone.

[0084] It should be noted that the specific value of the radius R of the boundary circle 214 varies depending on the diameter of the heat exchange tube 220. The determination of the specific value of the radius R of the boundary circle 214 is common knowledge in the field and will not be elaborated here.

[0085] like Figure 8 As shown, in this application, the high-efficiency heat exchange zone 215 of the fin 210 is obtained by the heat exchange tube 220, and the low-efficiency heat exchange zone on the traditional fin 210 is reduced according to the high-efficiency heat exchange zone 215, thereby obtaining the wave structure of the outer edge of the fin 210.

[0086] Specifically, the edge of the fin 210 facing the windward side of the heat exchanger 200 is defined by a first curve 212; the first curve 212 is set along the height direction of the heat exchanger 200; the first curve 212 is a wavy curve; the first curve 212 includes a convex arc 2122, the center of the convex arc 2122 is located on the fin 210; the convex arc 2122 is located on the boundary circle 214.

[0087] If the fin 210 is only spliced ​​together from the high-efficiency circular area of ​​the tube hole 211, the outer edge of the windward side of the fin 210 has a complex shape and lacks a smooth transition between multiple circles, which can easily increase the resistance of the airflow when passing through the fin 210. Therefore, in this application, a concave arc 2121 is provided and the concave arc 2121 and the convex arc 2122 are smoothly transitioned to reduce the wind resistance of the airflow when passing through the windward side of the fin 210.

[0088] Specifically, such as Figure 8 and Figure 9 As shown, the first curve 212 includes a concave arc 2121, which is connected to and smoothly transitions with the convex arc 2122. The center of the concave arc 2121 is located outside the fin 210. The area defined by the concave arc 2121 and the boundary circle 214 is the transition zone 216. The transition zone 216 is used to connect multiple high-efficiency heat exchange zones 215 into one, making the outer edge of the fin 210 smooth, thereby reducing the wind resistance when the airflow passes through the windward side of the fin 210.

[0089] The convex arc 2122 and the concave arc 2121 are located on different circles. The circle containing the convex arc 2122 is externally tangent to the circle containing the concave arc 2121, so that the concave arc 2121 and the convex arc 2122 are smoothly connected.

[0090] Since the transition zone 216 is located outside the boundary circle 214, it can be considered as an inefficient heat exchange zone. Therefore, the smaller the area of ​​the transition zone 216, the higher the heat exchange efficiency of the heat exchanger 200.

[0091] In some embodiments, the convex arc 2122 and the concave arc 2121 have the same radius, so that the area of ​​the transition region 216 is smaller and the wind resistance of the outer edge of the windward side of the fin 210 is smaller.

[0092] The two sides of the fin 210 in the width direction are set to correspond to the windward and leeward sides of the heat exchanger 200. The distance D from the windward side to the leeward side of the heat exchanger 200 and the radius R of the convex arc 2122 satisfy: D=2R, so that the width of the fin 210 is small.

[0093] The fin 210 is formed by cutting a metal plate. The fin 210 is produced by cutting, which can efficiently process the metal plate into the required shape of the fin 210. This is not only suitable for large-scale production, which can greatly improve production efficiency and reduce costs, but also can accurately control the size and ensure the dimensional accuracy and consistency of the fin 210.

[0094] Compared to the traditional fin outer edge 217, in this application, by cutting off the inefficient heat exchange area on the traditional fin 210 and retaining the efficient heat exchange area 215 of the traditional fin 210, the windward outer edge of the fin 210 is designed as a wave shape to improve the heat exchange performance of the heat exchanger 200 and reduce the wind resistance of the fin 210.

[0095] The compensation coefficient δ for the cutting of fin 210, the distance L between the centers of adjacent tube holes 211, and the radius R of convex arc 2122 satisfy: L-δ=2R.

[0096] In some embodiments, the distance between the centers of adjacent holes 211 is 20 mm, the compensation coefficient δ for the cutting of fins 210 is 0.42 mm, and the width of fins 210 is 19.58 mm.

[0097] In other embodiments of this application, such as Figure 10 As shown, the first curve 212 lies on the sine function curve. The first curve 212 can be represented as y = Asin(ωx + φ), where the parameters A and ω are determined based on the specific air supply direction and thermal radiation efficiency optimization calculation.

[0098] By adjusting the amplitude A and wave number ω, optimization calculations can be performed based on the specific air supply direction and thermal radiation efficiency, making the shape of fin 210 more in line with actual operating requirements, further improving the uniformity of airflow on the surface of fin 210, enhancing the heat exchange effect, and optimizing the performance of the air conditioner under different operating conditions.

[0099] In some embodiments, A = 2 mm and wavenumber ω = 0.5; that is, the first curve 212 can be represented as y = 2sin(0.5x).

[0100] The edge of the fin 210 facing the leeward side of the heat exchanger 200 is defined by a second curve 213; the second curve 213 is set along the height direction of the heat exchanger 200; the second curve 213 is the same as the first curve 212, so that the outer edge of the windward side of the fin 210 is the same as the outer edge of the leeward side. When assembling the fin 210 with the heat exchange tube 220, there is no need to consider the installation direction of the fin 210, which reduces the assembly difficulty, reduces the assembly time, improves the assembly efficiency, is conducive to large-scale production, and reduces production costs.

[0101] In some embodiments, the second curve 213 and the first curve 212 are symmetrically arranged about the centerline axis of the fin 210 along the height direction of the fin 210, so that the outer edge of the windward side of the fin 210 is the same as the outer edge of the leeward side of the fin 210. During the assembly process of the fin 210 and the heat exchange tube 220, there is no need to consider the installation direction of the fin 210, which facilitates the assembly of the fin 210.

[0102] The second curve 213 is the same as the first curve 212. The detailed structure of the second curve 213 will not be described here.

[0103] Compared to the traditional fin 210, the fin 210 in this application removes the inefficient heat exchange area, retains the efficient heat exchange area 215 and the necessary transition area 216, so that the distance from the edge of the fin 210 to the heat exchange tube 220 is within the efficient heat radiation area, thereby increasing the heat exchange efficiency of the heat exchanger 200.

[0104] In addition to reducing wind resistance, the wave angle of fin 210 can be further precisely adjusted. Through research, the optimal angle between the air supply direction and the wave of fin 210 is achieved, allowing the airflow to enter the fin 210 at a suitable angle of entry. This results in a more uniform and gentler distribution of the airflow over the fin 210 area, achieving better heat dissipation and airflow utilization.

[0105] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0106] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. An air conditioner, characterized in that, include: The casing includes a return air vent and an air outlet; A fan, located inside the housing, is used to draw air from outside the housing into the housing through the return air inlet, and / or to output air from inside the housing to the outside of the housing through the air outlet. A heat exchanger, disposed inside the casing, is used to exchange heat with air passing through it; the heat exchanger includes: Heat exchange tubes, through which refrigerant flows; The fins are provided with perforations for the heat exchange tubes to pass through; the edge of the fins facing the windward side of the heat exchanger is defined by a first curve; the first curve is arranged along the height direction of the heat exchanger; the first curve includes: A concave arc, the center of which is located on the outer side of the fin; The convex arc has its center located on the fin. The convex arc and the concave arc are alternately arranged and connected to each other with a smooth transition. The convex arc is located on a circle with the center of the tube hole as the center and a radius of R.

2. The air conditioner according to claim 1, characterized in that, The circle containing the convex arc is externally tangent to the circle containing the concave arc.

3. The air conditioner according to claim 1, characterized in that, The convex arc and the concave arc have the same radius.

4. The air conditioner according to claim 1, characterized in that, The distance D from the windward side to the leeward side of the heat exchanger satisfies the following condition: D = 2R.

5. The air conditioner according to claim 1, characterized in that, The fins are formed by cutting metal plates.

6. The air conditioner according to claim 5, characterized in that, The compensation coefficient δ for fin cutting, the distance L between the centers of adjacent tube holes, and the radius R of the convex arc satisfy: L-δ=2R.

7. The air conditioner according to claim 1, characterized in that, The first curve is a sine function curve.

8. The air conditioner according to claim 1, characterized in that, The edge of the fin facing the leeward side of the heat exchanger is defined by a second curve; the second curve is arranged along the height direction of the heat exchanger; the second curve is the same as the first curve.

9. The air conditioner according to claim 8, characterized in that, The second curve and the first curve are symmetrical about the centerline axis set along the height direction of the fin.

10. An air conditioner, characterized in that, include: The casing includes a return air vent and an air outlet; A fan, located inside the housing, is used to draw air from outside the housing into the housing through the return air inlet, and / or to output air from inside the housing to the outside of the housing through the air outlet. A heat exchanger, located inside the housing, is used to exchange heat with the air passing through it. The heat exchanger is positioned with its windward side facing the fan or the return air inlet; the heat exchanger includes: Heat exchange tubes, through which refrigerant flows; The fins are provided with tube holes for the heat exchange tubes to pass through; the edge of the fin facing the windward side of the heat exchanger is wavy along the height direction of the heat exchanger; the windward side edge of the fins is provided with multiple notches, the notches are located between two adjacent tube holes in the height direction of the fins, and the length of the notches in the height direction gradually decreases from the windward side to the leeward side of the fins.

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