Air conditioner outdoor unit

Abstract

The utility model discloses an air conditioner outdoor unit, and belongs to the technical field of air conditioners. The air conditioner outdoor unit comprises a machine shell, an air inlet pipe and an air outlet pipe, the outdoor heat exchanger is arranged in the machine shell corresponding to the air inlet and comprises a heat exchange pipe used for circulating a refrigerant; the fins are provided with pipe penetrating holes for allowing the heat exchange pipes to penetrate through, and each fin comprises a first plane part extending in the length direction of the corresponding fin and a second plane part extending in the length direction of the corresponding fin; the number of the corrugated parts is at least two, and the two corrugated parts are symmetrically connected to the two ends of the first plane part in the width direction; on the section perpendicular to the length direction of the fin, the corrugated part is provided with a wave trough A and a wave trough B, and the wave trough A is far away from the first plane part relative to the wave trough B; in the thickness direction of the first plane part, the distance between the wave trough A and the first plane part is H1, the distance between the wave trough B and the first plane part is H2, and H2 is larger than H1, so that when heating is conducted under the frosting working condition, frost migrates to the inner side of the fin, and the frost resistance and heating performance of the outdoor heat exchanger are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of air conditioning, and in particular relates to an outdoor unit of an air conditioner. Background Art

[0002] Air conditioner outdoor units are typically installed outdoors to exchange heat with the outdoor environment. These units consist of a housing housing an outdoor heat exchanger and an outdoor fan. These outdoor heat exchangers typically use fin-and-tube heat exchangers, which typically consist of fins and heat exchange tubes threaded through the fins. Refrigerant flows through the heat exchange tubes.

[0003] When heating under frosting conditions, the moisture content of the humid air gradually decreases as it flows through the fins. Therefore, the frost on the outdoor heat exchanger is mainly concentrated on the windward side of the fins. This uneven frost layer distribution aggravates the frost blockage of the outdoor heat exchanger, causing the air conditioner heating performance to deteriorate sharply. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems in the related art to a certain extent.

[0005] In one aspect of the present application, an air-conditioning outdoor unit is provided, comprising: a casing provided with an air inlet; an outdoor heat exchanger provided in the casing corresponding to the air inlet, the outdoor heat exchanger comprising: a heat exchange tube for circulating a refrigerant; a fin provided with a tube-through hole for passing the heat exchange tube, the fin comprising: a first planar portion extending along the length direction of the fin, wherein a center line of the first planar portion parallel to the length direction passes through the center of the tube-through hole; at least two corrugated portions, the two corrugated portions being symmetrically connected to both ends of the first planar portion in the width direction; in a cross section perpendicular to the length direction of the fin, the corrugated portion has a trough A and a trough B, the trough A is farther away from the first planar portion relative to the trough B; in a thickness direction of the first planar portion, the distance between the trough A and the first planar portion is H1, and the distance between the trough B and the first planar portion is H2, and H2>H1.

[0006] The above technical solution has the following advantages or beneficial effects: by arranging the fins of the above structure, when the humid air flows through the fins of the outdoor heat exchanger during the heating operation, the turning angle and the thermal boundary layer disturbance intensity at the trough B are greater than those at the trough A. Therefore, the trough B has a higher local heat transfer coefficient and convective mass transfer coefficient than the trough A, resulting in an increase in the amount of frost downstream in the airflow direction of the trough B, which has the effect of guiding the frost to the inside of the fin, improving the uniformity of the frost, and improving the heating performance of the air conditioner.

[0007] In some embodiments, the corrugated portion includes a first inclined portion, a second inclined portion, a third inclined portion, and a fourth inclined portion connected in sequence, the first inclined portion and the second inclined portion are connected to form a trough A, the third inclined portion and the fourth inclined portion are connected to form a trough B, and the second inclined portion and the third inclined portion are connected to form a peak C.

[0008] The above technical solution has the following advantages or beneficial effects: by setting the corrugated portion of the above structure, multiple windward slopes and leeward slopes can be formed, which can effectively increase the area of ​​the heat exchange surface, increase the disturbance of the airflow, and thus improve the heat exchange efficiency.

[0009] In some embodiments, the fin further includes a second planar portion connected to an end of the corrugated portion away from the first planar portion.

[0010] The above technical solution has the following advantages or beneficial effects: by providing the second planar portion, the fin is sequentially composed of a second planar portion, a corrugated portion, a second planar portion, a corrugated portion and a second planar portion in the width direction of the fin, thereby generating greater disturbance to the airflow, increasing the contact area between the fin and the airflow, and thereby improving the heat exchange efficiency.

[0011] In some embodiments, in the width direction of the fin, the distance between the end of the corrugated portion away from the first planar portion and the trough A is L1, and the distance between the trough A and the crest C is L2, where L2>L1.

[0012] The above technical solution has the following advantages or beneficial effects: by setting L2>L1, the slope and resistance of the second inclined portion can be reduced, thereby guiding the water at the lower edge of the pipe hole and the third and fourth inclined portions to the outside of the fins, thereby accelerating the drainage speed of the defrost water.

[0013] In some embodiments, in the width direction of the fin, the distance between one end of the corrugated portion connected to the first planar portion and the trough B is L4, and the distance between the trough B and the crest C is L3, where L4>L3.

[0014] The above technical solution has the following advantages or beneficial effects: by setting L4>L3, the slope and resistance of the fourth inclined portion can be reduced, thereby guiding the condensed water on the inner side of the fin to the outer side of the fin, thereby accelerating the drainage speed of the defrost water.

[0015] In some embodiments, the fin further includes a spoiler formed on the second inclined portion.

[0016] The above technical solution has the following advantages or beneficial effects: by protruding a spoiler on the second inclined portion, the spoiler forms a trough structure, so that frost can migrate downstream, that is, to the inside of the fin, thereby improving the frost resistance of the heat exchanger.

[0017] In some embodiments, taking any through-hole as a reference object, in the length direction of the fin, a slit structure is provided on one side of the through-hole, and no slit structure is provided on the other side of the through-hole, and the slit structure is provided on the first inclined portion and / or the third inclined portion.

[0018] The above technical solution has the following advantages or beneficial effects: by providing a slit structure, the lateral vortex generated by the air flow can be effectively destroyed, the disturbance of the air flow can be increased, and the heat exchange efficiency of the fins can be improved.

[0019] In some embodiments, the slotted structure comprises:

[0020] a first slit formed on the third inclined portion and having one end in the width direction extending to the wave valley B;

[0021] The first bridge piece is provided at the first slit and connected to the third inclined portion, and the opening of the first bridge piece faces the first plane portion.

[0022] The above technical solution has the following advantages or beneficial effects: by providing the first slit and the first bridge portion on the third inclined portion, the defrost water on the inner side of the fin is guided to the outer side of the fin.

[0023] In some embodiments, the slotted structure further comprises:

[0024] A second slit is formed on the first inclined portion and one end thereof in the width direction extends to the trough A;

[0025] The second bridge piece is arranged at the second slit and connected to the first inclined portion, and the opening of the second bridge piece faces the first plane portion.

[0026] The above technical solution has the following advantages or beneficial effects: by providing the second slit and the second bridge portion on the first inclined portion, the defrost water on the inner side of the fin is guided to the outer side of the fin.

[0027] In some embodiments, the first inclined portion is provided with a plurality of slit structures arranged along the length direction of the fin.

[0028] The above technical solution has the following advantages or beneficial effects: by arranging multiple slit structures on the first inclined portion, the through-tube holes can have slit structures on both sides in the width direction of the fin, thereby destroying the non-separated attachment flow near the heat exchange tube and improving the heat exchange effect.

[0029] In some embodiments, the slotted structure is symmetrically arranged along a first axial direction, where the first axial direction is the direction of the symmetry axis between two through-tube holes on both sides of the slotted structure.

[0030] The above technical solution has the following advantages or beneficial effects: the slit structure is an axisymmetric structure, which can be easily produced and manufactured, and can effectively enhance the intensity of mixing between adjacent flow channels of the fins, and can also effectively destroy the boundary layer of the airflow, enhance the disturbance of the airflow, and improve the heat exchange effect.

[0031] On the other hand, the present application provides an air-conditioning outdoor unit, which includes: a casing with an air inlet provided thereon; an outdoor heat exchanger, which is provided in the casing corresponding to the air inlet, and the outdoor heat exchanger includes: a heat exchange tube for circulating refrigerant; a fin, which is provided with a tube through-hole for passing the heat exchange tube, and the fin includes: a first planar portion extending along the length direction of the fin, and a center line of the first planar portion parallel to the length direction passes through the center of the tube through-hole; a corrugated portion connected to the side of the first planar portion close to the air inlet; in a cross-section perpendicular to the length direction of the fin, the corrugated portion has a trough A and a trough B, and the trough A is farther away from the first planar portion relative to the trough B; in the thickness direction of the first planar portion, the distance between the trough A and the first planar portion is H1, and the distance between the trough B and the first planar portion is H2, and H2>H1.

[0032] The above technical solution has the following advantages or beneficial effects: by arranging the fins of the above structure, when the air-conditioning outdoor unit is in heating operation, when the humid air flows through the fins of the outdoor heat exchanger, the turning angle and the thermal boundary layer disturbance intensity at the trough B are greater than those at the trough A. Therefore, the trough B has a higher local heat transfer coefficient and convective mass transfer coefficient than the trough A, resulting in an increase in the amount of frost downstream in the air flow direction of the trough B, which has the effect of guiding the frost to the inside of the fins, improving the uniformity of the frost, and improving the heating performance of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a structural diagram of an air-conditioning outdoor unit according to one embodiment of the present disclosure;

[0034] Figure 2 is a structural schematic diagram of an air-conditioning outdoor unit from another perspective according to one embodiment of the present disclosure;

[0035] Figure 3 is a structural schematic diagram of an outdoor heat exchanger when it is vertically installed according to one embodiment of the present disclosure;

[0036] Figure 4 is a schematic structural diagram of a fin according to one embodiment of the present disclosure;

[0037] Figure 5 is a perspective view of a fin according to one embodiment of the present disclosure;

[0038] Figure 6 is a front view of a fin according to one embodiment of the present disclosure;

[0039] Figure 7 yes Figure 6 Cross-sectional view at AA;

[0040] Figure 8 A partial cross-sectional view of a fin according to an embodiment of the present disclosure Figure 1 ;

[0041] Figure 9 A partial cross-sectional view of a fin according to an embodiment of the present disclosure Figure 2 ;

[0042] Figure 10 yes Figure 6 Cross-sectional view at BB;

[0043] Figure 11 yes Figure 10 Schematic diagram of part of the structure;

[0044] Figure 12 is a perspective view of a fin from another perspective according to an embodiment of the present disclosure;

[0045] Figure 13 yes Figure 6 Cross-sectional view at CC;

[0046] Figure 14 yes Figure 13 Schematic diagram of part of the structure;

[0047] Figure 15 is a schematic structural diagram of a fin from another perspective according to one embodiment of the present disclosure;

[0048] Figure 16 yes Figure 6 Cross-sectional view at DD;

[0049] Figure 17 is a schematic diagram of a partial structure of a fin according to one embodiment of the present disclosure;

[0050] Figure 18 yes Figure 16 Schematic diagram of part of the structure

[0051] Figure 19 yes Figure 6 Cross-sectional view at EE;

[0052] Figure 20 yes Figure 19 Schematic diagram of part of the structure.

[0053] In the above figures: 100, air-conditioning outdoor unit; 10, casing; 11, air inlet; 12, air outlet; 20, outdoor fan; 30, outdoor heat exchanger; 3, fin; 31, first plane portion; 32, corrugated portion; 321, first inclined portion; 322, second inclined portion; 323, third inclined portion; 324, fourth inclined portion; 33, second plane portion; 34, spoiler; 35, slit structure; 351, first slit; 352, first bridge portion; 353, second slit; 354, second bridge portion; 36, pipe hole; 37, boss; 4, heat exchange tube. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is described and illustrated below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely used to explain this application and are not intended to limit this application. Based on the embodiments provided in this application, all other embodiments obtained by those of ordinary skill in the art without making any creative efforts are within the scope of protection of this application.

[0055] Obviously, the drawings described below are merely examples or embodiments of the present application. Those skilled in the art can, without inventive effort, apply the present application to other similar scenarios based on these drawings. Furthermore, it is also understood that, although the effort involved in such a development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, changes in design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as an insufficiency of the content disclosed in this application.

[0056] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments, unless there is a conflict.

[0057] The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "plurality" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. The terms "first", "second", "third" and the like involved in this application are merely to distinguish similar objects, and do not represent a specific ordering of objects.

[0058] In addition, the present invention may repeat reference numbers and / or reference letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0059] The utility model provides an air-conditioning outdoor unit 100, which is described below with reference to Figures 1 to 20 The air-conditioning outdoor unit 100 provided in the present application is described. The air-conditioning outdoor unit 100 is an outdoor unit of the air conditioner, which is usually installed outdoors to exchange heat with the outdoor environment.

[0060] refer to Figure 1 In an exemplary embodiment of an air-conditioning outdoor unit 100 provided by the present invention, the air-conditioning outdoor unit 100 includes a casing 10 . The casing 10 is installed outdoors and forms the overall appearance of the air-conditioning outdoor unit 100 .

[0061] The housing 10 defines an accommodation space therein for installing and fixing the components of the air-conditioning outdoor unit 100. The housing 10 has a top end and a bottom end, and the top end and the bottom end are two opposite ends of the housing 10 in the vertical direction.

[0062] Continue to refer Figure 1 The housing 10 may include an air inlet 11. The air inlet 11 is communicated with the accommodating space and serves as an inlet for external air to flow into the housing 10.

[0063] The housing 10 may include an air outlet 12. The air outlet 12 is in communication with the accommodation space and serves as an outlet for the heat-exchanged air in the housing 10 to flow out.

[0064] Indoor air outside the housing 10 enters the housing 10 through the air inlet 11 and is finally discharged to the outside through the air outlet 12 .

[0065] In this embodiment, the air inlet 11 can be provided on the rear panel of the housing 10, and the air outlet 12 can be located on the front panel of the housing 10. Of course, the air inlet 11 can also be provided on the side panels of the housing 10, that is, the air inlet 11 can be provided on the rear panel and / or the side panels.

[0066] The air inlet 11 can be provided on both side panels or only on one of the two side panels. The air outlet can also be provided on the top panel of the housing 10.

[0067] It should be noted that the direction described in the article is based on the direction in which the user faces the air-conditioning outdoor unit 100, wherein the side facing the user when the air-conditioning outdoor unit 100 is used is defined as the front side, the opposite side is defined as the rear side, and the left and right sides are distinguished based on the direction in which the user faces the air-conditioning outdoor unit 100.

[0068] The air conditioner outdoor unit 100 may include an outdoor heat exchanger 30 , which is disposed in the accommodation space and is used to perform heat exchange with the air in the casing 10 . The outdoor heat exchanger 30 may be installed inside the air inlet 11 .

[0069] To minimize the size of the air conditioner outdoor unit 100 and increase the heat exchange area of ​​the outdoor heat exchanger 30, in this embodiment, the outdoor heat exchanger 30 is positioned corresponding to the air inlet 11. The side of the outdoor heat exchanger 30 closest to the air inlet is the windward side, and the side opposite the windward side is the leeward side.

[0070] In some embodiments of the present application, the air conditioner outdoor unit 100 may include an outdoor fan (not shown in the figure), which is disposed in the housing 10 and close to the air outlet 12. The outdoor fan may be an axial flow fan.

[0071] The outdoor fan may be arranged toward the air outlet 12 , that is, the outdoor fan is arranged between the outdoor heat exchanger 30 and the air outlet 12 .

[0072] In this embodiment, the outdoor fan is installed between the outdoor heat exchanger 30 and the air outlet 12. Under the action of the outdoor fan, outdoor air enters the accommodation space through the air inlet 11, exchanges heat with the outdoor heat exchanger 30 within the accommodation space, and is then driven by the outdoor fan to be discharged from the housing 10 through the air outlet 12.

[0073] The air conditioner outdoor unit 100 may include a compressor, which is disposed in a receiving space within the casing 10 .

[0074] It is understood that the housing 10 may include a chassis. The chassis serves as the foundation of the air-conditioning outdoor unit 100 and is used to provide mounting locations for components such as the compressor and the outdoor heat exchanger 30. The chassis forms the bottom end of the housing 10.

[0075] The outdoor unit of the air conditioner is the outdoor unit of the air conditioner, and the indoor unit of the air conditioner is the indoor unit of the air conditioner.

[0076] The air conditioner may include a throttling device for throttling. The throttling device may be provided in the air conditioner indoor unit or the air conditioner outdoor unit 100.

[0077] An air conditioner may include a refrigerant circuit. Connecting piping connects the indoor and outdoor units 100 to form a refrigerant circuit. The air conditioner uses the refrigerant circuit to circulate through the compressor, condenser, throttling device, and evaporator, enabling indoor cooling or heating.

[0078] The indoor unit of the air conditioner includes an indoor heat exchanger.

[0079] The indoor heat exchanger and the outdoor heat exchanger 30 function as a condenser or an evaporator. When the indoor heat exchanger functions as a condenser, the air conditioner functions as a heater in a heating mode, and when the indoor heat exchanger functions as an evaporator, the air conditioner functions as a cooler in a cooling mode.

[0080] The refrigeration cycle and heating cycle include compression process, condensation process, expansion process and evaporation process. The refrigerant absorbs and releases heat to provide cooling or heat to the indoor space, thereby achieving temperature regulation of the indoor space.

[0081] The compressor compresses the refrigerant gas into a high-temperature and high-pressure state and discharges the compressed refrigerant gas, and the discharged refrigerant gas flows into the condenser.

[0082] The condenser condenses the compressed high-temperature and high-pressure gaseous refrigerant into liquid refrigerant, and the heat is released to the surrounding environment through the condensation process.

[0083] The liquid refrigerant flowing out of the condenser enters the throttling device, which expands the high-temperature and high-pressure liquid refrigerant condensed by the condenser into a low-pressure liquid refrigerant.

[0084] The low-pressure liquid refrigerant flowing out of the throttling device enters the evaporator. When the liquid refrigerant flows through the evaporator, it absorbs heat and evaporates into low-temperature and low-pressure refrigerant gas. The refrigerant gas in a low-temperature and low-pressure state returns to the compressor.

[0085] The evaporator can achieve a cooling effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. In the above-mentioned entire cycle, the air conditioner can adjust the temperature of the indoor space.

[0086] In some embodiments of the present application, the outdoor heat exchanger 30 may include at least one row of fin groups. Wherein, at least one row of fin groups is arranged along the air supply direction. For example, Figure 3As shown, it is a schematic diagram of a cross section of the outdoor heat exchanger 30. The outdoor heat exchanger 30 has three rows of fin groups, wherein the direction of the hollow arrow represents the air supply direction.

[0087] The fin group may include a plurality of fins 3 arranged in parallel, with an air flow channel formed between two adjacent fins 3 to facilitate air flow.

[0088] The outdoor heat exchanger 30 may include a plurality of heat exchange tubes 4 penetrating the fins 3. A medium flow channel is formed in the heat exchange tubes 4, and a refrigerant flows in the medium flow channel.

[0089] The heat exchange tubes 4 are arranged in a direction substantially perpendicular to the gas flow direction, so that the heat on the heat exchange tubes 4 is transferred to the fins 3 along their circumferential direction. When air flows through the air flow channels between the fins 3, the air exchanges heat with the fins 3, removing the heat from the fins 3.

[0090] refer to Figure 4 The fin 3 is provided with a tube-through hole 36 for passing the heat exchange tube 4. The plurality of tube-through holes 36 are arranged on the fin 3 at intervals along the length direction of the fin 3.

[0091] In some embodiments of the present application, reference is made to Figure 7 、 Figure 8 The fin 3 may include a first planar portion 31 . The first planar portion 31 extends along the length direction of the fin. A center line of the first planar portion 31 parallel to the length direction of the fin passes through the center of the through-tube hole 36 .

[0092] It can be understood that, in this embodiment, on a plane perpendicular to the length direction of the fin 3 , the first planar portion 31 is in an axisymmetric structure on the central axis L of the through-tube hole 36 .

[0093] The fin 3 may include at least two corrugated portions 32. Figure 8 The two corrugated portions 32 are symmetrically connected to both ends of the first planar portion 31 in the width direction. That is, on a plane perpendicular to the length direction of the fin 3, the two corrugated portions 32 are symmetrically arranged along the central axis L of the through-tube hole 36.

[0094] refer to Figure 9 In a cross section perpendicular to the length direction of the fin 3 , the corrugated portion 32 has a trough A and a trough B, and the trough A is farther away from the first planar portion 31 than the trough B.

[0095] During heating operation in winter, the moisture content of the humid air gradually decreases as it flows through the fins 3 of the outdoor heat exchanger 30. Frost on the outdoor heat exchanger 30 is mainly concentrated on the windward side of the fins 3. This uneven frost distribution aggravates frost blockage of the outdoor heat exchanger 30, causing the air conditioning heating performance to deteriorate sharply.

[0096] In order to solve the above technical problems, in this embodiment, in the thickness direction of the first planar portion 31, the distance H1 between the trough A and the first planar portion 31 is set to be smaller than the distance H2 between the trough B and the first planar portion 31, that is, H2>H1, thereby improving the uniformity of frosting.

[0097] In this embodiment, by providing the fins 3 of the above-mentioned structure, when the humid air flows through the fins 3 of the outdoor heat exchanger 30 during the heating operation, the turning angle and the thermal boundary layer disturbance intensity at the trough B are greater than those at the trough A. Therefore, the trough B has a higher local heat transfer coefficient and convective mass transfer coefficient than the trough A, resulting in an increase in the amount of frost downstream in the airflow direction of the trough B, which has the effect of guiding the frost to the inside of the fin 3, improving the uniformity of the frost, and improving the heating performance of the air conditioner.

[0098] In some other embodiments, the fin 3 may include a first planar portion 31 extending along the length direction of the fin 3. The fin 3 may include at least one corrugated portion 32 connected to a side of the first planar portion 31 close to the air inlet 11.

[0099] The corrugated portion 32 has a trough A and a trough B. The trough A is farther away from the first planar portion 31 than the trough B. In the thickness direction of the first planar portion 31 , the distances between the trough A and the trough B and the first planar portion 31 are H1 and H2 respectively, and H2>H1.

[0100] The fin 3 may include a plurality of tube holes 36 spaced apart along the length of the fin 3. The tube holes 36 are used to pass heat transfer tubes. The centers of the tube holes 36 are located on the centerline of the first planar portion 31, which is parallel to the length direction. The edges of the tube holes 36 may extend onto the corrugated portion 32.

[0101] In some embodiments of this application, continue to refer to Figure 8 The corrugated portion 32 may include a fourth inclined portion 324 , wherein one end of the fourth inclined portion 324 is connected to one end of the first planar portion 31 in the width direction.

[0102] The corrugated portion 32 may include a third inclined portion 323 , and one end of the third inclined portion 323 is connected to the other end of the fourth inclined portion 324 to form a trough B.

[0103] The corrugated portion 32 may include a second inclined portion 322 , one end of the second inclined portion 322 is connected to the other end of the third inclined portion 323 to form the crest C. The crest C is located on a plane formed by the extension of the first planar portion 31 .

[0104] The corrugated portion 32 may include a first inclined portion 321 , wherein one end of the first inclined portion 321 is connected to the other end of the second inclined portion 322 to form a trough A.

[0105] In this embodiment, the corrugated portion 32 includes a first inclined portion 321, a second inclined portion 322, a third inclined portion 323, and a fourth inclined portion 324 connected in sequence, so that it can form multiple windward slopes and leeward slopes, which can effectively increase the area of ​​the heat exchange surface, increase the disturbance of the airflow, and thus improve the heat exchange efficiency.

[0106] For example, Figure 9 Taking the perspective shown as an example, the arrow indicates the air supply direction. The first inclined portion 321, the second inclined portion 322, the third inclined portion 323, and the fourth inclined portion 324 on the left side of the first planar portion 31 sequentially form a windward slope, a leeward slope, a windward slope, and a leeward slope. The fourth inclined portion 324, the third inclined portion 323, the second inclined portion 322, and the first inclined portion 321 on the right side of the first planar portion 31 sequentially form a windward slope, a leeward slope, a windward slope, and a leeward slope.

[0107] In some embodiments of this application, continue to refer to Figure 8 The fin 3 may include a second planar portion 33 connected to an end of the corrugated portion 32 away from the first planar portion 31 .

[0108] In this embodiment, by providing a second planar portion 33, the fin 3 is sequentially composed of a second planar portion 33, a corrugated portion 32, a second planar portion 33, a corrugated portion 32 and a second planar portion 33 in the width direction of the fin 3, thereby generating greater disturbance to the airflow, increasing the contact area between the fin 3 and the airflow, and thereby improving the heat exchange efficiency.

[0109] At the same time, the direction of extension of the corrugated portion 32 is along the longitudinal direction of the fin 3. This method simplifies molding, reduces process steps, and provides reliable strength. The corrugated edge of the corrugated portion 32 increases the strength of the fin 3 and improves its resistance to falling over. The corrugated portion 32 and the rest of the fin 3 are integrally molded using a die, resulting in a fin 3 with high strength and reliability.

[0110] In any of the above technical solutions, further, the first planar portion 31 and the second planar portion 33 are parallel.

[0111] In this technical solution, the first planar portion 31 and the second planar portion 33 are parallel, and the first inclined portion 321, the second inclined portion 322, the third inclined portion 323 and the fourth inclined portion 324 are inclined relative to the first planar portion 31 and the second planar portion 33. On the one hand, the heat exchange area of ​​the fin 3 is increased, and on the other hand, the disturbance effect on the airflow is improved, thereby improving the heat exchange efficiency of the fin 3.

[0112] The second planar portion 33 may be located on the plane where the first planar portion 31 is located. Figure 5In a cross section passing through the central axis of the through-hole 36 and perpendicular to the length direction of the fin 3 , the central axis of the through-hole 36 is located on the first planar portion 31 , and the edge of the through-hole 36 can extend to the third inclined portion 323 .

[0113] When the outdoor heat exchanger 30 is defrosted, the frost water flows from top to bottom and is retained in large quantities along the lower edge of the through-holes 36 of the fins 3. In order to speed up the drainage, Figure 10 、 Figure 11 In this embodiment, in the width direction of the fin 3, the edge of the maximum size of the through-hole 36 is extended beyond the trough B to the third inclined portion 323, so that the defrost water can be guided to both sides of the tube hole to avoid obstruction of the tube hole.

[0114] For further reference, Figure 10 , the crest C and the end of the corrugated portion 32 away from the first planar portion 31 are on the same plane; in the width direction of the fin 3, the distance between the end of the corrugated portion 32 away from the first planar portion 31 and the trough A is L1, and the distance between the trough A and the crest C is L2, L2>L1.

[0115] In this embodiment, reference Figure 11 By setting L2>L1, the slope and resistance of the second inclined portion 322 can be reduced, thereby guiding the water at the bottom edge of the through-hole 36 and the third and fourth inclined portions 323 and 324 to the outside of the fin 3, thereby accelerating the drainage of the defrost water. Figure 10 The direction of the arrow shown in FIG is the flow direction of the condensed water guided by the second inclined portion 322 .

[0116] In this embodiment, the portion close to the center line of the fin 3 in the longitudinal direction is the inner side of the fin 3 , and vice versa.

[0117] refer to Figure 10 In the width direction of the fin 3 , the distance between the end of the corrugated portion 32 connected to the first planar portion and the trough B is L4 , and the distance between the trough B and the crest C is L3 , where L4>L3 .

[0118] In this embodiment, by setting L4>L3, the slope and resistance of the fourth inclined portion 324 can be reduced, thereby guiding the water inside the fin 3 to the outside of the fin 3, thereby accelerating the drainage speed of the defrost water.

[0119] In some embodiments of the present application, reference is made to Figure 12 , the fin 3 may include a spoiler 34 .

[0120] refer to Figure 13The spoiler 34 is formed on the second inclined portion 322 and protrudes relative to the second inclined portion 323 in a direction away from the plane where the first planar portion 32 is located.

[0121] In this embodiment, in the thickness direction of the first planar portion 31 , the maximum distance between the spoiler 34 and the first planar portion 31 is greater than the distance H1 .

[0122] In the above technical solution, reference Figure 14 By providing a spoiler 34 on the second inclined portion 322, the frost migrates downstream, i.e., to the inner side of the fin 3, thereby preventing the frost of the outdoor heat exchanger 30 from being concentrated on the windward side of the fin 3, thereby preventing the uneven distribution of the frost layer from aggravating the frost blockage of the outdoor heat exchanger 30 and causing a sharp deterioration in the heating performance of the air conditioner, thereby effectively improving the frost resistance of the outdoor heat exchanger 30.

[0123] In some embodiments of the present application, the fin 3 may include a slotted structure 35 , and the slotted structure 35 is located on one side of the through-tube hole 36 .

[0124] Taking any through-hole 36 as a reference object, along the length direction of the fin 3, one side of the through-hole 36 is provided with a slot structure 35, while the other side of the through-hole 36 is not provided with a slot structure 35. The slot structure 35 is provided on the first inclined portion 321 and / or the third inclined portion 323.

[0125] In this embodiment, by providing the slit structure 35 , the transverse vortex generated by the air flow can be effectively destroyed, the disturbance of the air flow can be increased, and the heat exchange efficiency of the fin 3 can be improved.

[0126] The heat exchange efficiency of the portion of the fin 3 with the slotted structure 35 is higher than that of the portion without the slotted structure 35. For ease of description, this application refers to the portion of the fin with the slotted structure 35 as an enhanced heat exchange fin type, and the portion of the fin without the slotted structure 35 as a non-enhanced heat exchange fin type.

[0127] Although the heat exchange efficiency of the slotted structure 35 is higher, the slots of the slotted structure 35 are easily clogged by frost under low temperature conditions, resulting in a rapid attenuation of the circulating air volume and heat exchange capacity of the heat exchanger and a poor heating cycle.

[0128] When the outdoor heat exchanger 30 operates in low-temperature heating conditions, frost forms first on one side of the enhanced heat exchange fin structure on the side of the tube hole 36, causing a local decrease in heat exchange performance. However, the non-enhanced heat exchange fin structure on the other side of the tube hole 36 maintains strong heat exchange capacity and circulating air volume. The refrigerant in the heat exchange tube 4 can continue to absorb heat from the outdoor air, ensuring the air conditioner's low-temperature heating performance. When the outdoor heat exchanger 30 operates in cooling conditions, the enhanced heat exchange fin structure on the side of the fin 3 has a higher heat transfer coefficient, allowing the refrigerant in the heat exchange tube 4 to efficiently dissipate heat to the outside.

[0129] As can be seen, the fins 3 of this embodiment and the outdoor heat exchanger 30 using them can balance the different heat exchange requirements during cooling and heating. Furthermore, because the fin structures on both sides of the through-tube holes 36 in the fins 3 are arranged in a staggered and cyclical manner in a certain sequence, when assembling multiple fins 3 to form the outdoor heat exchanger 30, there is no need to consider the position and order of assembly of each fin 3. This simplifies the production and assembly process of the fins 3 and the outdoor heat exchanger 30, and the resulting outdoor heat exchanger can maintain relatively consistent performance.

[0130] refer to Figure 15 In some embodiments of the present application, the slit structure 35 and the spoiler 34 are arranged alternately along the length direction of the fin 3, that is, the spoiler 34 is arranged on one side of the non-slit structure 35 of the through-tube hole 36, so that the spoiler 34 and the slit structure 35 are respectively provided on both sides of the through-tube hole 36, which can improve the heat exchange efficiency of the outdoor heat exchanger 30.

[0131] In some embodiments of the present application, reference is made to Figures 16 to 18 The slot structure 35 may include a first slot 351 . The first slot 351 is formed on the third inclined portion 323 , and one end of the first slot 351 in the width direction extends to the trough B. The first slot 351 extends along the length direction of the third inclined portion 323 .

[0132] The slotted structure 35 may include a first bridge portion 352 . The first bridge portion 352 is provided at the first slot 351 and connected to the third inclined portion 323 . The opening of the first bridge portion 352 faces the first planar portion 31 .

[0133] It is understandable that the first bridge portion 325 can be formed by bending one end of a portion of the third inclined portion 323 close to the fourth inclined portion 324 in a direction away from the trough B.

[0134] In this embodiment, the first slit 351 and the first bridge portion 352 are provided on the third inclined portion 323 to guide the defrosted water on the inner side of the fin 3 to the outer side of the fin 3 .

[0135] Specifically, the defrost water inside the fin 3 is difficult to drain. By setting the first slit 351 and the first bridge portion 352, the drainage path can be switched. By setting them on the third inclined portion 323 away from the inner side of the fin 3, the defrost water inside the fin 3 can be guided to the outer side of the fin 3.

[0136] In some embodiments of the present application, reference is made to Figure 19 、 Figure 20The slot structure 35 may include a second slot 353 formed on the first inclined portion 321 and one end of the second slot 353 in the width direction extends to the valley A.

[0137] The slotted structure 35 may include a second bridge portion 354 . The second bridge portion 354 is provided at the second slot 353 and connected to the first inclined portion 321 . The opening of the second bridge portion 354 faces the first planar portion 31 .

[0138] In this embodiment, the first inclined portion 321 is provided with a plurality of slot structures 35 arranged along the length direction of the fin 3. Figure 17 Two second slits 353 may be spaced apart on the first inclined portion 321 between two adjacent through-tube holes 36 , and two second bridge portions 354 may be provided corresponding to the second slits 353 .

[0139] By providing a plurality of slit structures 35 on the first inclined portion, the number of slits on both sides of the width direction of the fin 3 is increased, which helps to guide the air to the leeward side of the heat exchange tube 4, reduce the wake area of ​​the heat exchange tube 4, and improve the heat exchange effect of the fin.

[0140] It is understandable that the first bridge portion 325 can be formed by bending a portion of the first inclined portion 321 , one end of the first inclined portion 321 close to the second inclined portion 322 , in a direction away from the trough A.

[0141] In this embodiment, by providing the second slit 353 and the second bridge portion 354 on the first inclined portion 321 , the melted water inside the fin 3 can be guided to the outside of the fin 3 , thereby avoiding the problem of the melted water inside the fin 3 being difficult to discharge.

[0142] refer to Figure 15 The slit structures 35 are arranged on the first inclined portion 321 and the third inclined portion 323, nearly half surrounding the periphery of the two adjacent tube holes 36. The provision of multiple slit structures 35 disrupts the non-separated attached flow near the heat exchange tube 4 and directs more air to the leeward side of the heat exchange tube 4, further shortening the wake area on the leeward side of the heat exchange tube 4 and improving the heat exchange efficiency of the fin.

[0143] In some embodiments of the present application, the slotted structure 35 is symmetrically arranged along a first axial direction, where the first axial direction is the direction of the symmetry axis between the two through-tube holes 36 on both sides of the slotted structure 35 .

[0144] In this embodiment, by setting the slit structure 35 as an axisymmetric structure, it can be facilitated for production and manufacturing, and at the same time, it can effectively enhance the intensity of mixing between adjacent flow channels of the fin 3, and can also effectively destroy the boundary layer of the airflow, enhance the disturbance of the airflow, and improve the heat exchange effect.

[0145] In some embodiments of the present application, the fin 3 may include a reinforcement structure. The reinforcement structure is arranged around the through-tube hole 36 and protrudes along the axis of the through-tube hole 36. Figure 10 The reinforcement structure may be a boss 37 , which can effectively enhance the strength of the fins near the through-tube hole 36 .

[0146] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

[0147] For ease of explanation, the above description has been presented 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. Based on the above teachings, various modifications and variations are possible. The above embodiments have been selected and described to better explain the principles and practical applications, thereby enabling those skilled in the art to better utilize the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. An air conditioner outdoor unit, characterized in that: include: a casing, on which an air inlet is provided; An outdoor heat exchanger is provided in the housing corresponding to the air inlet, and the outdoor heat exchanger includes: Heat exchange tubes, used to circulate refrigerant; The fin is provided with a tube-through hole for passing the heat exchange tube, and the fin comprises: a first planar portion extending along the length direction of the fin, wherein a center line of the first planar portion parallel to the length direction passes through the center of the through-tube hole; The corrugated portion has at least two, and the two corrugated portions are symmetrically connected to the two ends of the width direction of the first planar portion; in a cross section perpendicular to the length direction of the fin, the corrugated portion has a trough A and a trough B, and the trough A is farther away from the first planar portion than the trough B; in the thickness direction of the first planar portion, the distance between the trough A and the first planar portion is H1, and the distance between the trough B and the first planar portion is H2, and H2>H1.

2. The air conditioner outdoor unit according to claim 1, characterized in that: The corrugated portion includes a first inclined portion, a second inclined portion, a third inclined portion, and a fourth inclined portion connected in sequence. The first inclined portion and the second inclined portion are connected to form the trough A, the third inclined portion and the fourth inclined portion are connected to form the trough B, and the second inclined portion and the third inclined portion are connected to form the peak C.

3. The air conditioner outdoor unit according to claim 2, characterized in that: In the width direction of the fin, the distance between the end of the corrugated portion away from the first planar portion and the trough A is L1, and the distance between the trough A and the crest C is L2, where L2>L1.

4. The air conditioner outdoor unit according to claim 2, characterized in that: In the width direction of the fin, the distance between one end of the corrugated portion connected to the first planar portion and the trough B is L4, and the distance between the trough B and the crest C is L3, where L4>L3.

5. The air conditioner outdoor unit according to claim 2, characterized in that: The fin further includes a flow spoiler formed on the second inclined portion.

6. The air conditioner outdoor unit according to claim 2, characterized in that: Taking any of the through-holes as a reference object, in the length direction of the fin, a slit structure is provided on one side of the through-hole, and no slit structure is provided on the other side of the through-hole, and the slit structure is provided on the first inclined portion and / or the third inclined portion.

7. The air conditioner outdoor unit according to claim 6, characterized in that: The slotted structure comprises: a first slit formed on the third inclined portion and having one end in the width direction extending to the wave valley B; The first bridge piece is provided at the first slit and connected to the third inclined portion, and the opening of the first bridge piece faces the first plane portion.

8. The air conditioner outdoor unit according to claim 6 or 7, characterized in that: The slotted structure comprises: a second slit formed on the first inclined portion and having one end in the width direction extending to the wave valley A; The second bridge piece is provided at the second slit and connected to the first inclined portion, and the opening of the second bridge piece faces the first plane portion.

9. The air conditioner outdoor unit according to claim 6, characterized in that: The first inclined portion is provided with a plurality of the slit structures arranged along the length direction of the fin.

10. An air conditioner outdoor unit, characterized in that: include: a casing, on which an air inlet is provided; An outdoor heat exchanger is provided in the housing corresponding to the air inlet, and the outdoor heat exchanger includes: Heat exchange tubes, used to circulate refrigerant; The fin is provided with a tube-through hole for passing the heat exchange tube, and the fin comprises: a first planar portion extending along the length direction of the fin, wherein a center line of the first planar portion parallel to the length direction passes through the center of the through-tube hole; A corrugated portion is connected to the side of the first planar portion close to the air inlet; in a cross section perpendicular to the length direction of the fin, the corrugated portion has a trough A and a trough B, and the trough A is farther away from the first planar portion relative to the trough B; in the thickness direction of the first planar portion, the distance between the trough A and the first planar portion is H1, and the distance between the trough B and the first planar portion is H2, H2>H1.

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