Air guide ring, fan and air conditioner

Abstract

The invention discloses an air guide ring, a fan and an air conditioner, and belongs to the technical field of fans. The air guide ring comprises a main body, the main body is provided with an air channel, and an air inlet and an air outlet which are communicated with the air channel are formed in the two ends, in the axial direction of the air channel, of the main body respectively; the end, close to the air inlet, of the outer peripheral wall of the body is provided with a flow guide part, the flow guide part is arranged in the circumferential direction of the air duct, the outer side of the flow guide part is provided with a flow guide wall face, one end of the flow guide wall face is connected to the outer peripheral wall of the body, the other end of the flow guide wall face is connected to the inner peripheral wall of the air inlet, and the flow guide wall face comprises an arc face used for guiding airflow to flow to the air inlet. The air inlet distortion at the air inlet is inhibited, the air resistance at the air inlet is reduced, airflow can enter the air duct more uniformly and smoothly, the airflow flux entering the air duct is increased, and then the heat exchange efficiency is improved; in addition, the airflow flowing state at the air inlet is improved, so that noise can be effectively reduced, and the noise level is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fans, and in particular to an air guide ring, a fan and an air conditioner. Background Art

[0002] The air guide ring is a key component for guiding airflow in the outdoor unit of the air conditioner. It is used to guide the airflow, thereby accelerating the heat exchange of the airflow. The inlet edge of the traditional air guide ring structure often cuts the airflow, thereby causing flow separation, which not only reduces the amount of air entering the air duct and reduces the heat exchange efficiency of the air conditioner outdoor unit, but also generates a lot of noise. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an air guide ring, which can make the air flow enter the air duct more evenly and smoothly, improve the heat exchange efficiency and reduce the generation of noise.

[0004] The present invention also provides a fan and an air conditioner comprising the air guide ring.

[0005] According to an embodiment of the first aspect of the present invention, the air guide ring includes: a main body, the main body has an air duct, and the main body is respectively formed with an air inlet and an air outlet connected to the air duct at both ends of the axial direction of the air duct; wherein, an outer peripheral wall of the main body close to one end of the air inlet is provided with a guide portion, the guide portion is arranged along the circumference of the air duct, and a guide wall surface is provided on the outer side of the guide portion, one end of the guide wall surface is connected to the outer peripheral wall of the main body, and the other end is connected to the inner peripheral wall of the air inlet, and the guide wall surface includes a curved surface for guiding the airflow to flow to the air inlet.

[0006] The air guide ring according to the embodiment of the present invention has at least the following beneficial effects: The air guide ring of the embodiment of the present invention is provided with a guide part at one end of the outer peripheral wall of the main body close to the air inlet, wherein a guide wall is provided on the outer side of the guide part, one end of the guide wall is connected to the outer peripheral wall of the main body, and the other end is connected to the inner peripheral wall of the air inlet, and the guide wall includes an arc surface. Based on this, the arc-shaped guide wall can guide the airflow at the edge of the air inlet to flow toward the air inlet, inhibit the cutting of the airflow, reduce the occurrence of flow separation, thereby inhibiting the air intake distortion at the air inlet, reducing the air resistance of the air inlet, allowing the airflow to enter the air duct more evenly and smoothly, increasing the air flow rate entering the air duct, and thereby improving the heat exchange efficiency; in addition, the flow state of the airflow at the air inlet is improved, thereby effectively reducing the generation of noise and improving the noise level.

[0007] According to some embodiments of the present invention, along the direction from the air inlet toward the air outlet, the guide wall includes a first wall and a second wall arranged in sequence, the distance between the first wall and the central axis of the air duct gradually increases, and the distance between the second wall and the central axis of the air duct gradually decreases. According to some embodiments of the present invention, the radius of curvature of the first wall surface is less than or equal to the radius of curvature of the second wall surface.

[0008] According to some embodiments of the present invention, the main body includes a first air guide section and a second air guide section that are connected to each other, and the first air guide section and the second air guide section are arranged sequentially along the direction from the air inlet to the air outlet, the inner diameter of the first air guide section gradually decreases, and the inner circumferential wall of the first air guide section is an arc surface, and the air inlet is formed at one end of the first air guide section away from the second air guide section. According to some embodiments of the present invention, the main body also includes a third air guide segment, which is connected to an end of the second air guide segment away from the first air guide segment, and the air outlet is formed at an end of the third air guide segment away from the second air guide segment. Along the direction from the air inlet to the air outlet, the inner diameter of the third air guide segment gradually increases, and the inner wall of the third air guide segment is a curved surface. According to some embodiments of the present invention, the axial length of the air duct is L, and the axial length of the air guide portion along the air duct is W, satisfying: 0.1L≤W≤0.3L.

[0009] According to some embodiments of the present invention, the main body includes a detachably connected air inlet and an air outlet, the air inlet and the air outlet are arranged in sequence along the axial direction of the air duct and define the air duct, the air inlet is formed on the air inlet, the guide portion is protruded from the outer peripheral wall of the air inlet, and the air outlet is formed on the air outlet. According to some embodiments of the present invention, a plug-in portion and a first flange portion are provided at one end of the air inlet portion close to the air outlet portion, the plug-in portion protrudes from the end surface of the air inlet portion facing the air outlet portion, the first flange portion protrudes from the outer peripheral wall of the air inlet portion, and a step portion and a second flange portion are provided at one end of the air outlet portion close to the air inlet portion, the plug-in portion abuts against the step portion, and the first flange portion fits against the second flange portion. According to some embodiments of the present invention, the first flange portion is provided with one of a positioning rib and a positioning groove, and the second flange portion is provided with the other of the positioning rib and the positioning groove, and the positioning rib is positioned and matched with the positioning groove.

[0010] A wind turbine according to an embodiment of the second aspect of the present invention comprises a wind wheel, a motor and the wind guide ring described in the embodiment of the first aspect, wherein the wind wheel is at least partially located in the air duct, and the motor is used to drive the wind wheel to rotate.

[0011] The fan according to the embodiment of the present invention has at least the following beneficial effects: The fan adopts the air guide ring of the first aspect of the embodiment, which guides the airflow at the edge of the air inlet to the air inlet through the arc-shaped guide wall, thereby suppressing the cutting of the airflow and reducing the occurrence of flow separation, thereby suppressing the air intake distortion at the air inlet, reducing the air resistance at the air inlet, and allowing the airflow to enter the air duct more evenly and smoothly, increasing the air flow rate entering the air duct, and thereby improving the operating efficiency of the fan; in addition, the airflow flow state at the air inlet is improved, thereby effectively reducing the noise generated by the fan and improving the noise level of the fan.

[0012] An air conditioner according to an embodiment of the third aspect of the present invention comprises the fan described in the embodiment of the second aspect.

[0013] The air conditioner according to the embodiment of the present invention has at least the following beneficial effects: The air conditioner adopts the fan of the second aspect of the embodiment, and reduces the occurrence of flow separation by optimizing the structure of the air guide ring, thereby suppressing the air intake distortion at the air inlet and reducing the air resistance at the air inlet, so that the airflow can enter the air duct more evenly and smoothly, increasing the air flow rate entering the air duct, thereby improving the heat exchange efficiency of the air conditioner, reducing the energy consumption of the air conditioner, and reducing the noise level when the air conditioner is running.

[0014] According to some embodiments of the present invention, the air conditioner includes a heat exchanger, which includes a first heat exchange part and a second heat exchange part connected to each other, the first heat exchange part and the second heat exchange part are arranged at an angle, the first heat exchange part, the wind wheel and the air inlet are arranged in sequence along the direction from the air inlet to the air outlet, the second heat exchange part and the guide part are arranged opposite to each other in the radial direction of the air duct, and the second heat exchange part is spaced apart from the guide wall.

[0015] According to some embodiments of the present invention, the heat exchanger includes fins and refrigerant pipelines passing through the fins. Along a projection plane perpendicular to the radial direction of the air duct, the projection of the air guide ring partially overlaps with the projection of the fin, and the length of the overlapping part along the axial direction of the air duct is H, satisfying: H≥20mm.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1A schematic diagram of an air guide ring according to an embodiment of the present invention; Figure 2 A top view of an air guide ring according to an embodiment of the present invention; Figure 3 for Figure 2 Cross-section view in the AA direction; Figure 4 is a cross-sectional view of an air inlet portion of an embodiment of the present invention; Figure 5 for Figure 4 A partial enlarged view of point B in the middle; Figure 6 This is a schematic diagram of the assembly of an air guide ring, a wind wheel and a heat exchanger according to an embodiment of the present invention; Figure 7 for Figure 6 A partial enlarged view of point C in the middle; Figure 8 An exploded view of an air guide ring according to an embodiment of the present invention; Fig. 9 for Figure 3 A partial enlarged view of point D in the middle.

[0018] Figure Number: Air guide ring 1000; Main body 100; first air guide section 101; second air guide section 102; third air guide section 103; Air duct 110; central axis 111; air inlet 120; air outlet 130; air guide portion 140; air guide wall 141; first wall 1411; second wall 1412; cavity 142; Air inlet 150; plug-in portion 151; first flange portion 152; positioning groove 1521; first matching plane 1522; air outlet 160; step portion 161; second flange portion 162; positioning rib 1621; second matching plane 1622; avoidance section 170; avoidance surface 171; rib 180; Wind wheel 200; Heat exchanger 300 ; first heat exchange part 310 ; second heat exchange part 320 ; fins 330 ; refrigerant pipeline 340 . DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0020] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In the description of the present invention, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0022] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0023] The outdoor unit of the air conditioner is an important part of the air conditioner, which is equipped with a heat exchanger, a compressor, a compressor partition, a fan and other devices. The outdoor unit of the air conditioner is mainly responsible for the heat exchange between the refrigerant and the external environment. Among them, the fan includes components such as a wind wheel, an air guide ring and a mesh cover, and its function is to guide the air flow to enhance the heat exchange between the outdoor unit and the outside world. Since the fan can directly affect the cooling effect, energy efficiency ratio and noise performance of the air conditioner, therefore, with the increasing demand of users for energy saving and quietness, it is an inevitable trend to reduce the energy consumption and working noise of the outdoor unit as much as possible.

[0024] The air guide ring is a key component in the fan for guiding the airflow, which is used to guide the airflow, thereby achieving the effect of accelerating the heat exchange of the airflow. The air inlet edge of the traditional air guide ring adopts a transition design of a right angle or a small curvature flange. However, when the airflow flows through this area, the sharp edge of the air guide ring often cuts the airflow, causing flow separation. It will not only increase the air resistance of the air duct, reduce the amount of air entering the air duct, and then reduce the excess air volume of the heat exchanger, reducing the heat exchange efficiency of the air conditioner outdoor unit, but also cause an increase in aerodynamic noise. In addition, it is difficult for traditional air guide rings to conduct targeted dredging of the airflow perpendicular to the central axis of the air duct.

[0025] In order to solve the above problems, some embodiments of the present invention provide an air guide ring 1000, which is suitable for an outdoor unit of an air conditioner. Figures 1 to 9 The air guide ring 1000 is illustrated.

[0026] Reference Figure 1 and Figure 2As shown, in the embodiment of the present invention, the air guide ring 1000 includes a main body, which is annular and has an air duct 110 formed inside. The main body is provided with an air inlet 120 and an air outlet 130 at both ends of the axial direction of the air duct 110, respectively, and the air inlet 120 and the air outlet 130 are respectively connected to the air duct 110, so as to guide the airflow from the air inlet 120 to the air outlet 130 through the air duct 110.

[0027] Reference Figure 1 and Figure 3 As shown, in the embodiment of the present invention, the outer peripheral wall of the main body is provided with a guide portion 140, and the guide portion 140 is located at one end of the outer peripheral wall close to the air inlet 120. Specifically, the guide portion 140 is protrudingly formed on the outer peripheral wall of the main body, and the guide portion 140 is completely arranged around the air inlet 120, thereby forming an annular structure extending along the circumference of the air duct 110.

[0028] In order to prevent the edge of the air inlet 120 from cutting the airflow, Figure 4 and Figure 5 It can be understood that, in the embodiment of the present invention, a guide wall 141 is provided on the outside of the guide portion 140, and specifically, one end of the guide wall 141 is connected to the outer peripheral wall of the main body, and the other end is connected to the inner peripheral wall of the air inlet 120. The guide wall 141 includes a smooth arc surface, which can effectively guide the airflow to flow to the air inlet 120, thereby entering the air duct 110.

[0029] It is understandable that when the airflow near the air inlet 120 contacts the guide wall 141, the flow direction can be gradually changed along the extension direction of the arc surface to achieve a smooth transition. Compared with the right-angle or acute-angle edge of the air inlet 120, the arc-shaped guide wall 141 can avoid drastically changing the flow direction and flow speed of the airflow, thereby cutting the airflow and reducing the occurrence of flow separation.

[0030] Furthermore, when the airflow flows toward the air inlet 120 from different directions, the curved surface can gradually turn the airflow. Even if the airflow flows radially toward the edge of the air inlet 120 along the air duct 110, the airflow can flow toward the air inlet 120 along the curved guide wall 141, thereby achieving the diversion of the airflow from different angles, thereby improving the air intake efficiency of the air guide ring 1000.

[0031] It should be noted that the guide portion 140 and the main body may be integrally formed or detachably connected, which is not limited in this embodiment. Figure 5 As shown, in one example, the air guide 140 is integrally formed with the main body, and a cavity 142 is formed between the air guide 140 and the main body. It is understandable that the cavity 142 is formed when the air guide 140 and the main body are integrally formed, which can not only save material costs, but also reduce the weight of the air guide ring 1000.

[0032] With the trend of compact design of air conditioner outdoor units, the air guide ring 1000 often extends toward the L-shaped heat exchanger 300. However, such a layout will, on the one hand, cause the air guide ring 1000 to block part of the L-shaped heat exchanger 300, resulting in a dead angle of air flow and flow separation, leading to uneven wind field speed inside the air conditioner outdoor unit, reducing the air intake efficiency of the air guide ring 1000, and the air guide ring 1000 cannot effectively collect and guide the air flow in the dead angle, reducing the heat exchange uniformity of the heat exchanger 300, thereby reducing the heat exchange efficiency of the air conditioner outdoor unit. On the other hand, due to the irregular flow of air flow, a vortex will be formed between the air guide ring 1000 and the blocked part of the L-shaped heat exchanger 300, causing additional noise.

[0033] In order to avoid the generation of dead angles in the flow, some air conditioner outdoor units choose to increase the distance between the air guide ring 1000 and the L-shaped heat exchanger 300, so as to avoid the air guide ring 1000 blocking a part of the L-shaped heat exchanger 300. However, such an approach will not only increase the size of the air conditioner outdoor unit, but also make the distance between the part of the L-shaped heat exchanger 300 located in the axial direction of the air duct 110 and the air inlet 120 too large, and will also weaken the flow gathering and guiding effects of the air guide ring 1000, so that the heat exchange efficiency of the heat exchanger 300 cannot reach the optimal state.

[0034] In contrast, the air guide ring 1000 of the embodiment of the present invention can take into account the distance control between the air inlet 120 and the heat exchanger 300, and at the same time, ensure that there is no flow dead angle between the air guide ring 1000 and the partially blocked area of ​​the heat exchanger 300. Specifically, for the convenience of description, the following is an example of the air guide ring 1000 being applied to an air conditioner outdoor unit having a heat exchanger 300.

[0035] Reference Figure 6 As shown, in the embodiment of the present invention, the heat exchanger 300 includes a first heat exchange part 310 and a second heat exchange part 320, which are connected to each other and arranged at an angle. The first heat exchange part 310 is located on one side of the air inlet 120 along the axial direction of the air duct 110, and the first heat exchange part 310, the wind wheel 200 and the air inlet 120 are arranged in sequence along the direction from the air inlet 120 to the air outlet 130. Based on this, when the wind wheel 200 rotates, it can guide the airflow to flow through the first heat exchange part 310 for heat exchange first, and then enter the air duct 110 through the air inlet 120.

[0036] Reference Figure 6 and Figure 7As shown, in the embodiment of the present invention, the second heat exchange part 320 is located on one side of the main body along the radial direction of the air duct 110. Specifically, the second heat exchange part 320 and the guide part 140 are arranged opposite to each other along the radial direction of the air duct 110, and the two are arranged at intervals. It can be understood that after the airflow flows through the second heat exchange part 320, it will flow between the second heat exchange part 320 and the outer peripheral wall of the main body. Since the end of the guide wall surface 141 away from the air inlet 120 is connected to the outer peripheral wall of the main body, the airflow between the second heat exchange part 320 and the outer peripheral wall of the main body can change the flow direction and flow along the guide wall surface 141 to the air inlet 120 when it contacts the guide wall surface 141, thereby avoiding the airflow accumulating between the second heat exchange part 320 and the outer peripheral wall of the main body to generate a vortex.

[0037] It can be understood that, under the flow gathering and guiding action of the guide wall 141, the airflow between the second heat exchange part 320 and the outer peripheral wall of the main body can smoothly flow into the air duct 110 through the air inlet 120 along the guide wall 141, which effectively prevents the occurrence of flow separation, thereby improving the air intake uniformity at the air inlet 120 and improving the air intake efficiency of the air guide ring 1000, so that more airflow participates in the heat exchange process, and improves the heat exchange efficiency of the heat exchanger 300; on the other hand, it also reduces the possibility of vortex generation, thereby reducing the generation of noise. In addition, the air guide ring 1000 of this embodiment effectively suppresses the occurrence of flow separation through the guide wall 141. Even if the air guide ring 1000 blocks the second heat exchange part 320, the flow dead angle problem caused by the blocking can still be avoided. Therefore, it can provide conditions for reducing the distance between the air guide ring 1000 and the first heat exchange part 310, making the air conditioner outdoor unit more compact.

[0038] Reference Figure 5 As shown, in the embodiment of the present invention, the guide wall surface 141 includes a first wall surface 1411 and a second wall surface 1412 connected to each other. Specifically, the first wall surface 1411 and the second wall surface 1412 are sequentially arranged in a direction from the air inlet 120 to the air outlet 130. In this embodiment, the distance between the first wall surface 1411 and the central axis 111 of the air duct 110 gradually increases, and the distance between the second wall surface 1412 and the central axis 111 of the air duct 110 gradually decreases.

[0039] by Figure 51411 and the second wall 1412 shown in the figure are used as examples for explanation. In the embodiment of the present invention, one end of the outer contour line of the first wall 1411 is connected to the inner peripheral wall of the air inlet 120, and the other end is connected to the second wall 1412. The outer contour line of the first wall 1411 extends from the air inlet 120 in a direction away from the central axis 111 of the air duct 110. The end of the outer contour line of the second wall 1412 away from the first wall 1411 is connected to the outer peripheral wall of the main body, and the outer contour line of the second wall 1412 extends from the connection point with the outer contour line of the first wall 1411 in a direction close to the central axis 111 of the air duct 110.

[0040] In one example, the airflow between the second heat exchange part 320 and the outer peripheral wall of the main body first contacts the second wall 1412, and the airflow first flows outward along the second wall 1412. When it flows to the first wall 1411, the airflow flows inward under the guidance of the first wall 1411, gradually approaches the air inlet 120, and finally enters the air duct 110 through the air inlet 120, thereby reorganizing the turbulent airflow between the second heat exchange part 320 and the outer peripheral wall of the main body into an orderly directional flow airflow.

[0041] Continue to refer to Figure 5 As shown, in the embodiment of the present invention, the radius of curvature of the first wall surface 1411 is less than or equal to the radius of curvature of the second wall surface 1412. It can be understood that the radius of curvature is used to indicate the degree to which a curve deviates from a straight line, and the smaller the radius of curvature, the greater the curvature of the wall surface. In this embodiment, the curvature of the first wall surface 1411 is greater than that of the second wall surface 1412.

[0042] It is understandable that when the airflow between the second heat exchange part 320 and the outer peripheral wall of the main body contacts the second wall surface 1412 and flows along the second wall surface 1412, due to the large curvature radius of the second wall surface 1412, its curved surface forms a gentle flow channel, thereby smoothly adjusting the flow direction of the airflow and causing the airflow to gradually flow outward. When the airflow flows to the first wall surface 1411 and flows along the first wall surface 1411, due to the small curvature radius of the first wall surface 1411, its curved surface presents a steep flow channel, thereby forcing the airflow to turn quickly and quickly gather toward the air inlet 120.

[0043] In this embodiment, the initial impact of the airflow is alleviated by the second wall 1412 with a large curvature, thereby avoiding the airflow from colliding with the second wall 1412 and causing the airflow to be dispersed, thereby accurately guiding the airflow to the first wall 1411. The first wall 1411 can quickly converge the airflow and make the airflow flow toward the air inlet 120, avoiding the airflow from being separated during the process of flowing toward the air inlet 120.

[0044] Reference Figure 4 and Figure 5As shown, in an embodiment of the present invention, the main body includes a first air guide section 101 and a second air guide section 102. The first air guide section 101 and the second air guide section 102 are arranged in sequence along the axial direction of the air duct 110, and jointly define the air outlet 110. Among them, the air inlet 120 is formed at one end of the first air guide section 101 away from the second air guide section 102. In one example, the air outlet 130 is formed at one end of the second air guide section 102 away from the first air guide section 101. Based on this, the airflow flowing through the first heat exchange part 310 enters the air duct 110 from the air inlet 120, flows through the first air guide section 101 and the second air guide section 102 in sequence, and then flows out from the air outlet 130. In this process, the first air guide section 101 and the second air guide section 102 play a role in guiding the airflow. The airflow flowing through the second heat exchange part 320 first contacts the second wall 1412 and flows along the second wall 1412 to the first wall 1411, and enters the air duct 110 through the air inlet 120 under the guidance of the first wall 1411, and flows through the first air guide section 101 and the second air guide section 102 in sequence before flowing out from the air outlet 130.

[0045] Continue to refer to Figure 4 and Figure 5 As shown, in the embodiment of the present invention, the inner diameter of the first air guiding section 101 gradually decreases along the direction from the air inlet 120 to the air outlet 130, and the inner peripheral wall of the first air guiding section 101 is a curved surface. It can be understood that, since the inner peripheral wall of the first air guiding section 101 is a curved surface, the inner peripheral wall of the first air guiding section 101 and the inner peripheral wall of the second air guiding section 102 can be smoothly connected, thereby improving the flow stability of the airflow in the first air guiding section 101 and the second air guiding section 102.

[0046] Reference Figure 5 , which shows a cross-sectional view of the first air guide section 101 and the second air guide section 102 along a projection plane perpendicular to the radial direction of the air duct 110. Figure 5 It can be understood that the inner contour line of the projection of the first air guide section 101 is a continuous smooth arc, one end of which is smoothly connected with the contour line of the projection of the first wall surface 1411, and the other end is smoothly connected with the inner contour line of the projection of the second air guide section 102, and the connection point with the inner contour line of the projection of the second air guide section 102 is closer to the central axis 111 of the air duct 110 than the connection point with the contour line of the projection of the first wall surface 1411. In this embodiment, along the direction from the air inlet 120 to the air outlet 130, the inner diameter of the projection of the first air guide section 101 gradually decreases, thereby forming a tapered airflow channel. Through the tapered airflow channel, the airflow flowing through the first air guide section 101 can be prompted to increase the flow rate.

[0047] Combination Figure 5It can be understood that, in the embodiment of the present invention, the inner contour line of the projection of the second air guide section 102 is a continuous straight line segment extending axially along the air duct 110. Therefore, the second air guide section 102 defines a straight cylindrical air flow channel, whose inner diameter remains unchanged and whose inner diameter is equal to the minimum inner diameter of the first air guide section 101.

[0048] Reference Figure 4 As shown, in another example, the main body also includes a third air guide section 103, and the first air guide section 101, the second air guide section 102 and the third air guide section 103 are arranged in sequence along the direction from the air inlet 120 to the air outlet 130, and jointly define the air outlet 110. In this embodiment, the first air guide section 101, the second air guide section 102 and the third air guide section 103 are connected to each other. For example, the first air guide section 101, the second air guide section 102 and the third air guide section 103 can be integrally formed, or fixedly connected by other types of fastening connection methods. The air outlet 130 is formed at one end of the third air guide section 103 away from the second air guide section 102. Based on this, the airflow enters the air duct 110 from the air inlet 120, flows through the first air guide section 101, the second air guide section 102 and the third air guide section 103 in sequence, and then flows out from the air outlet 130.

[0049] Continue to refer to Figure 4 As shown, in the embodiment of the present invention, the inner diameter of the third air guiding section 103 gradually increases along the direction from the air inlet 120 to the air outlet 130, and the inner peripheral wall of the third air guiding section 103 is a curved surface, and the minimum inner diameter of the third air guiding section 103 is equal to the inner diameter of the second air guiding section 102. It can be understood that, since the inner peripheral wall of the third air guiding section 103 is a curved surface, the inner peripheral wall of the third air guiding section 103 and the inner peripheral wall of the second air guiding section 102 can be smoothly connected, thereby improving the flow stability of the airflow in the second air guiding section 102 and the third air guiding section 103.

[0050] It is understandable that in this embodiment, the inner diameter of the projection of the third air guide section 103 gradually increases along the direction from the air inlet 120 to the air outlet 130, thereby forming an increasing airflow channel. The increasing airflow channel can diffuse and decelerate the airflow passing through the third air guide section 103, thereby preventing the high-speed airflow from impacting the edge of the air outlet 130 and causing noise.

[0051] After many tests, the inventors found that if the length of the guide portion 140 along the axial direction of the air duct 110 is too long, not only will the guide portion 140 occupy too much space, causing interference with the heat exchanger 300 and the partition of the compressor, but also increasing the difficulty of processing the guide portion 140. If the length of the guide portion 140 along the axial direction of the air duct 110 is too short, the guide wall 141 will have difficulty in guiding the airflow. Figure 3 and Figure 5As shown, in the embodiment of the present invention, the axial length of the air duct 110 is L, and the axial length of the air guide portion 140 along the air duct 110 is W, which satisfies: 0.1L≤W≤0.3L. It should be noted that in this embodiment, the value of W can be 0.1L, 0.15L, 0.2L, 0.3L, etc.

[0052] This embodiment reasonably limits the size of the air guide portion 140, on the one hand, ensuring that the flow gathering performance and flow guiding performance of the air guide wall 141 can meet the requirements, and on the other hand, the air guide ring 1000 can maintain a compact layout, avoiding the air guide portion 140 from occupying too much internal space of the air conditioner outdoor unit, and reducing the possibility of interference between the air guide ring 1000 and functional components such as the heat exchanger 300. At the same time, a sufficient gap can be formed between the air guide wall 141 and the surface of the second heat exchange portion 320 for air flow to flow through.

[0053] Reference Figure 8 As shown, in the embodiment of the present invention, the main body includes an air inlet 150 and an air outlet 160, wherein the air inlet 150 and the air outlet 160 are sequentially arranged along the axial direction of the air duct 110, and the two are detachably connected, thereby reducing the difficulty of disassembling and assembling the air guide ring 1000, making the assembly of the air guide ring 1000 more convenient. Specifically, the air inlet 150 and the air outlet 160 can be connected by means of a limit hole connection, a slot, and a fastener fixation, etc., which is not limited in this embodiment.

[0054] Reference Figure 3 As shown, in the embodiment of the present invention, the air inlet 150 and the air outlet 160 jointly define the air outlet 110, specifically, the first air guide section 101 and the second air guide section 102 are sequentially formed at the air inlet 150, and the third air guide section 103 is formed at the air outlet 160. Based on this, the air inlet 120 is provided at one end of the air inlet 150 facing away from the air outlet 160, the air guide 140 is protrudingly formed at one end of the outer peripheral wall of the air inlet 150 away from the air outlet 160, and the air outlet 130 is formed at one end of the air outlet 160 facing away from the air inlet 150.

[0055] In order to achieve a stable connection between the air inlet 150 and the air outlet 160 and ensure the air tightness of the air duct 110, refer to Figure 8 and Fig. 9As shown, in the embodiment of the present invention, the air inlet 150 is provided with a plug-in portion 151 and a first flange portion 152, and the plug-in portion 151 and the first flange portion 152 are both provided at one end of the air inlet 150 close to the air outlet 160. Specifically, the plug-in portion 151 is formed on the end surface of the air inlet 150 facing the air outlet 160, and the plug-in portion 151 is arranged along the circumference of the air duct 110, thereby forming an annular structure protruding from the end surface of the air inlet 150. The first flange portion 152 is formed on the outer peripheral wall of the air inlet 150 and is arranged around the air inlet 150. In this embodiment, the first flange portion 152 is provided with a first mating plane 1522.

[0056] Continue to refer to Figure 8 and Fig. 9 As shown, in the embodiment of the present invention, the air outlet 160 is provided with a step portion 161 and a second flange portion 162, and the step portion 161 and the second flange portion 162 are both provided at one end of the air outlet 160 close to the air inlet 150. Specifically, the second flange portion 162 is formed on the outer peripheral wall of the air outlet 160 and is arranged around the air outlet 160, and the second flange portion 162 is provided with a second matching plane 1622. The step portion 161 is formed between the inner peripheral wall of the air outlet 160 and the second flange portion 162, and the step portion 161 is arranged along the circumferential direction of the air duct 110, thereby forming a step with a circular cross-section.

[0057] Reference Fig. 9 As shown, in an embodiment of the present invention, the plug-in portion 151 penetrates into the air outlet portion 160 and abuts against the step portion 161, and the first flange portion 152 is connected to the second flange portion 162. Specifically, the first mating plane 1522 and the second mating plane 1622 fit each other, which on the one hand improves the connection stability between the air inlet portion 150 and the air outlet portion 160 and improves the overall structural stability of the main body; on the other hand, the cooperation between the plug-in portion 151 and the step portion 161 can improve the air tightness of the air duct 110 and reduce the leakage of the air flow in the air duct 110 from the gap between the air inlet portion 150 and the air outlet portion 160.

[0058] In the embodiment of the present invention, the first flange portion 152 is provided with one of the positioning ribs 1621 and the positioning grooves 1521, and the second flange portion 162 is provided with the other of the positioning ribs 1621 and the positioning grooves 1521. Figure 1 and Figure 8 As shown, in one example, the positioning rib 1621 is provided on the second flange portion 162, and the positioning groove 1521 is provided on the first flange portion 152. It can be understood that the positioning rib 1621 and the positioning groove 1521 are positioned and matched, which can not only quickly determine the installation direction of the air inlet portion 150 and the air outlet portion 160 when assembling the air guide ring 1000, but also reduce the difficulty of connecting the air inlet portion 150 and the air outlet portion 160, thereby improving the assembly efficiency of the air guide ring 1000.

[0059] The embodiment of the present invention further provides a wind turbine, comprising a wind rotor 200, a motor and the wind guide ring 1000 of the above embodiment, wherein the wind rotor 200 is at least partially located in the wind duct 110, and the motor is used to drive the wind rotor 200 to rotate. Specifically, the wind rotor 200 may be partially located in the wind duct 110, or the entire wind rotor 200 may be located in the wind duct 110, and the central axis of the wind rotor 200 coincides with the central axis of the wind guide ring 1000.

[0060] The fan of the embodiment of the present invention adopts the air guide ring 1000 of the above-mentioned embodiment, and guides the airflow at the edge of the air inlet 120 to flow toward the air inlet 120 through the arc-shaped guide wall 141, thereby suppressing the cutting of the airflow and reducing the occurrence of flow separation, thereby suppressing the air intake distortion at the air inlet 120, reducing the air resistance of the air inlet 120, and allowing the airflow to enter the air duct 110 more evenly and smoothly, increasing the air flow rate entering the air duct 110, and thereby improving the operating efficiency of the fan; in addition, the airflow flow state at the air inlet 120 is improved, thereby effectively reducing the noise generated by the fan and improving the noise level of the fan.

[0061] Since the fan adopts all the technical solutions of the air guide ring 1000 of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be repeated here.

[0062] The embodiment of the present invention further provides an air conditioner, comprising the fan of the above embodiment. In this embodiment, the air conditioner can be a split air conditioner, comprising an outdoor unit and an indoor unit, and the fan is installed in the outdoor unit.

[0063] The air conditioner in the embodiment of the present invention adopts the fan of the above-mentioned embodiment, and reduces the occurrence of flow separation by optimizing the structure of the air guide ring 1000, thereby suppressing the air intake distortion at the air inlet 120, reducing the air resistance at the air inlet 120, and allowing the air flow to enter the air duct 110 more evenly and smoothly, thereby increasing the air flow rate entering the air duct 110, thereby improving the heat exchange efficiency of the air conditioner, reducing the energy consumption of the air conditioner, and reducing the noise level during the operation of the air conditioner.

[0064] Since the air conditioner adopts all the technical solutions of the fan of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be repeated here.

[0065] Reference Figure 6As shown, in an embodiment of the present invention, the air conditioner includes a heat exchanger 300, and the heat exchanger 300 includes a first heat exchange part 310 and a second heat exchange part 320 which are connected to each other. The first heat exchange part 310 and the second heat exchange part 320 are arranged at an angle. The first heat exchange part 310, the wind wheel 200 and the air inlet 120 are arranged in sequence along the direction from the air inlet 120 to the air outlet 130. The second heat exchange part 320 and the guide part 140 are arranged opposite to each other along the radial direction of the air duct 110, and the second heat exchange part 320 and the guide wall 141 are spaced apart.

[0066] Reference Figure 7 As shown, in the embodiment of the present invention, the heat exchanger 300 includes a fin 330 and a refrigerant pipeline 340 passing through the fin 330. On the projection plane perpendicular to the radial direction of the air duct 110, the projection of the air guide ring 1000 partially overlaps with the projection of the fin 330, and the length of the overlapping part along the axial direction of the air duct 110 is H, satisfying: H ≥ 20 mm. It can be understood that the length of the overlapping part along the axial direction of the air duct 110 indicates how much the air guide ring 1000 blocks the fin 330.

[0067] It is understandable that when the air guide ring 1000 blocks a smaller area of ​​the fin 330, the possibility of airflow accumulation and vortex generation between the fin 330 and the outer peripheral wall of the main body is low. On the contrary, when the air guide ring 1000 blocks a larger area of ​​the fin 330, airflow accumulation and vortex generation between the fin 330 and the outer peripheral wall of the main body are easy to occur, which will not only increase the air resistance of the air duct 110 and reduce the air flow entering the air duct 110, but also increase the noise generated at the air guide ring 1000.

[0068] Based on this, this embodiment can ensure that when the air guide ring 1000 blocks a larger area of ​​the fin 330 by reasonably limiting the range of H, the air guide ring 1000 needs to be provided with a guide portion 140, and the guide portion 140 can better reflect its flow gathering and guiding functions in this scenario, thereby playing a targeted and effective role in guiding the accumulated airflow between the fin 330 and the outer peripheral wall of the main body.

[0069] Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. The air guide ring is characterized in that: include: The main body has an air duct, and the main body is respectively formed with an air inlet and an air outlet connected with the air duct at two ends of the axial direction of the air duct; Among them, a guide portion is provided at one end of the outer peripheral wall of the main body close to the air inlet, and the guide portion is arranged along the circumference of the air duct. A guide wall surface is provided on the outer side of the guide portion, and one end of the guide wall surface is connected to the outer peripheral wall of the main body, and the other end is connected to the inner peripheral wall of the air inlet. The guide wall surface includes a curved surface for guiding the airflow to flow toward the air inlet.

2. The air guide ring according to claim 1, characterized in that: Along the direction from the air inlet toward the air outlet, the guide wall includes a first wall and a second wall arranged in sequence, the distance between the first wall and the central axis of the air duct gradually increases, and the distance between the second wall and the central axis of the air duct gradually decreases.

3. The air guide ring according to claim 2, characterized in that: The radius of curvature of the first wall surface is smaller than or equal to the radius of curvature of the second wall surface.

4. The air guide ring according to claim 1, characterized in that: The main body includes a first air guide section and a second air guide section which are connected to each other. The first air guide section and the second air guide section are arranged sequentially along the direction from the air inlet to the air outlet. The inner diameter of the first air guide section gradually decreases, and the inner circumferential wall of the first air guide section is an arc surface. The air inlet is formed at one end of the first air guide section away from the second air guide section.

5. The air guide ring according to claim 4, characterized in that: The main body also includes a third air guide segment, which is connected to an end of the second air guide segment away from the first air guide segment, and the air outlet is formed at an end of the third air guide segment away from the second air guide segment. Along the direction from the air inlet to the air outlet, the inner diameter of the third air guide segment gradually increases, and the inner wall of the third air guide segment is a curved surface.

6. The air guide ring according to any one of claims 1 to 5, characterized in that: The axial length of the air duct is L, and the axial length of the air guide portion along the air duct is W, which satisfies: 0.1L≤W≤0.3L.

7. The air guide ring according to claim 1, characterized in that: The main body includes an air inlet portion and an air outlet portion that are detachably connected, the air inlet portion and the air outlet portion are arranged in sequence along the axial direction of the air duct and define the air duct, the air inlet is formed at the air inlet portion, the guide portion is protruded from the outer peripheral wall of the air inlet portion, and the air outlet is formed at the air outlet portion.

8. The air guide ring according to claim 7, characterized in that: An insert portion and a first flange portion are provided at one end of the air inlet portion close to the air outlet portion, the insert portion protrudes from the end surface of the air inlet portion facing the air outlet portion, the first flange portion protrudes from the outer peripheral wall of the air inlet portion, and a step portion and a second flange portion are provided at one end of the air outlet portion close to the air inlet portion, the insert portion abuts against the step portion, and the first flange portion fits against the second flange portion.

9. The air guide ring according to claim 8, characterized in that: The first flange portion is provided with one of a positioning rib and a positioning groove, and the second flange portion is provided with the other of the positioning rib and the positioning groove, and the positioning rib is positioned and matched with the positioning groove.

10. A fan, characterized in that: It comprises a wind wheel, a motor and the wind guide ring according to any one of claims 1 to 9, wherein the wind wheel is at least partially located in the wind duct, and the motor is used to drive the wind wheel to rotate.

11. An air conditioner, characterized in that Including the fan as claimed in claim 10.

12. The air conditioner according to claim 11, characterized in that: The air conditioner includes a heat exchanger, which includes a first heat exchange part and a second heat exchange part connected to each other, the first heat exchange part and the second heat exchange part are arranged at an angle, the first heat exchange part, the wind wheel and the air inlet are arranged in sequence along the direction from the air inlet to the air outlet, the second heat exchange part and the guide part are arranged opposite to each other in the radial direction of the air duct, and the second heat exchange part is spaced apart from the guide wall.

13. The air conditioner according to claim 12, characterized in that: The heat exchanger includes fins and refrigerant pipelines passing through the fins. Along a projection plane perpendicular to the radial direction of the air duct, the projection of the air guide ring partially overlaps with the projection of the fin, and the length of the overlapping part along the axial direction of the air duct is H, satisfying: H≥20mm.

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