Flow guide structure and bladeless fan lamp

Abstract

The utility model discloses a diversion structure which comprises a shell and a diversion piece, the shell is provided with an air outlet end, a first cavity and a second cavity, the first cavity and the second cavity are communicated with each other, the first cavity is used for installing a wind wheel, the second cavity is arranged below the first cavity, and the air outlet end is arranged at the bottom end of the second cavity; the flow deflectors are formed by extending from the inner side wall of the shell to the second cavity in an arc shape, the flow deflectors are evenly distributed in the circumferential direction of the shell, the shell is provided with a center line Z, the air outlet end surrounds to form an air outlet end face, and the center line Z and the air outlet end face intersect at a center point O; the included angle between the two ends of the projection of the flow deflector on the air outlet end face and the center point O is alpha, and alpha meets the relational expression that alpha = (360 degrees / m) + / -5 degrees. According to the flow guide structure, the flow guide sheets with long strokes are arranged on the air outlet cavity, and the adjacent flow guide sheets are matched to guide and accelerate airflow, so that the flowing-out airflow is high in speed, and the air blowing speed can be increased and the air blowing range can be expanded. The utility model further provides a bladeless fan lamp comprising the flow guide structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of fan lamps, and particularly relates to a guide structure and a bladeless fan lamp. Background Art

[0002] A bladeless fan light is a fan light that has both lighting and blowing functions. It adopts a turbine-shaped wind wheel structure and hides the wind wheel in a cavity inside the main body, eliminating the common exposed fan blade structure.

[0003] In the existing bladeless fan lamp, the wind is blown downward by the high-speed rotation of the wind wheel and the guide vanes provided on the shell. Figure 1 As shown, the guide vane has a short travel distance, and the upper end of the guide vane overlaps with the lower end in the projection of the air outlet end surface, which cannot effectively accelerate the airflow, resulting in a low wind speed. In addition, the distance to the target blowing area is short, and the blowing range is small. Utility Model Content

[0004] To address the shortcomings of the prior art, the present invention provides a guide structure comprising a plurality of long-travel guide vanes disposed on the air outlet cavity. Adjacent guide vanes cooperate with each other to further guide and accelerate the airflow accelerated by the impeller, increasing the outflow velocity and facilitating a greater blowing speed and expanded blowing range. The present invention also provides a bladeless fan lamp incorporating this guide structure.

[0005] The technical effects to be achieved by the present invention are achieved through the following technical aspects:

[0006] In a first aspect, the utility model provides a flow guide structure, comprising a shell and a flow guide plate;

[0007] The housing is provided with an air outlet and a first cavity and a second cavity that are interconnected, the first cavity is used to install the wind wheel, the second cavity is provided below the first cavity, and the air outlet is provided at the bottom end of the second cavity;

[0008] The guide plate extends in an arc shape from the inner side wall of the shell toward the second cavity, and a plurality of the guide plates are evenly distributed in the circumference of the shell;

[0009] The housing has a center line Z, the air outlet end is surrounded to form an air outlet end surface, and the center line Z intersects the air outlet end surface at a center point O;

[0010] The included angle between the two ends of the projection of the guide vane on the air outlet end surface and the center point O is α, and α satisfies the relationship: α=(360° / m)±5°, where m is the number of guide vanes provided in the shell.

[0011] In some embodiments, the guide plate includes a guide body and a first guide portion, a second guide portion, and a third guide portion arranged on the edge of the guide body, the third guide portion is connected to the first guide portion and the second guide portion at a first end point and a second end point, respectively, and the first end point is closer to the wind wheel than the second end point.

[0012] In some embodiments, the guide plate also includes a fourth guide portion, which is located on the inner wall of the shell. The fourth guide portion is connected to the first guide portion and the second guide portion at a third endpoint and a fourth endpoint respectively, and the third endpoint is the airflow inlet end; the fourth endpoint is adjacent to or connected to the air outlet end, and the fourth endpoint is the airflow outlet end.

[0013] In some embodiments, starting from the fourth end point, the first guide portion first extends in an arc shape in a direction away from the inner wall and then extends in an arc shape in a direction close to the inner wall; the first guide portion is provided with a guide inlet, and the length of the first guide portion is greater than the length of the second guide portion.

[0014] In some embodiments, with the air outlet end surface as the base surface and the center point O as the center of the circle, the projections of the first end point, the second end point, the third end point, and the fourth end point of the guide plate on the air outlet end surface are respectively the first projection point A, the second projection point B, the third projection point C, and the fourth projection point D;

[0015] Among them, multiple first projection points A surround to form a radius R OA The first ring body;

[0016] A plurality of second projection points B surround the OB The second ring of

[0017] A plurality of third projection points C surround the radius R OC The third ring;

[0018] A plurality of fourth projection points D surround the radius R OD The fourth ring.

[0019] In some embodiments, the following relationship exists:

[0020] β=0.3*α;

[0021] The angle between line segment OC and line segment OD is the angle α between the two ends of the projection of the guide vane on the air outlet end surface and the center point O.

[0022] β is the angle between the line segment OA of one guide plate and the line segment OD of the other guide plate adjacent to the guide inlet.

[0023] In some embodiments, the following relationship exists:

[0024] R OD -R OB =(R OC -R OA )±2.5;

[0025] Among them, R OA 、R OB 、R OC and R OD are the radii of the first, second, third and fourth ring bodies respectively.

[0026] In some embodiments, the wind wheel has a wind wheel tail end, the wind wheel tail end is provided with a wind wheel outlet, and the distance between the wind wheel tail end and the center line Z is R OE , with the following relationship:

[0027] 15mm≤R OA -R OE ≤25mm.

[0028] In some embodiments, a direction parallel to the center line Z is defined as a first direction. In the first direction, the following relationship is established:

[0029] 5mm≤(H3-H1)-H0≤10mm;

[0030] in,

[0031] H0 is the height of the wind wheel outlet,

[0032] H1 is the distance between the first end point and the air outlet end face,

[0033] H3 is the distance between the third end point and the air outlet end face.

[0034] In some embodiments, m guide vanes are provided on the inner side wall of the housing, where m is an odd number and m≥5;

[0035] The extending direction of the guide vane is the same as the rotating direction of the wind wheel.

[0036] In some embodiments, the guide structure further includes a cavity sealing member; the guide plate and the shell are an integral injection-molded structure, the shell is provided with an ejection port for convenient ejection, and the cavity sealing member covers and is connected to the ejection port.

[0037] In some embodiments, a lamp panel is installed in the second cavity;

[0038] The housing is provided with an air inlet, the housing and the wind wheel form a first air duct at the first cavity, and the first air duct is communicated with the air inlet;

[0039] The housing and the lamp panel form a second air duct at the second cavity. The guide plate is located in the second air duct. The second air duct is provided with an annular air outlet and communicates with the first air duct.

[0040] In a second aspect, the present invention also provides a bladeless fan lamp, comprising a lighting module and a motor, and the above-mentioned guide structure, wherein the lighting module is installed in the second cavity; the motor is drive-connected to the wind wheel.

[0041] In summary, the present invention has at least the following advantages:

[0042] 1. The guide structure provided by the utility model is that the airflow is accelerated by the wind wheel in the first cavity and then enters the second cavity. The airflow is then guided and accelerated by the guide vanes with a long stroke. The adjacent guide vanes cooperate with each other to make the airflow flow at a higher flow rate in the second cavity and flow out from the air outlet end, thereby increasing the wind speed and expanding the air outlet range.

[0043] 2. The guide structure provided by the present invention includes a guide body in the guide plate and multiple guide parts located on the edge of the guide body, which can effectively accelerate the airflow. The first guide part is an arc-shaped raised structure, which can, on the one hand, allow the airflow to flow smoothly into the guide body, reduce the collision of the airflow on the guide body, and help reduce noise; on the other hand, it can play a guiding role in the wind and ensure the amount of air flowing to the outside.

[0044] 2. The bladeless fan lamp provided by the present invention adopts a guide structure in which the spacing of the guide plates and the end points where multiple guide parts are connected are optimized, so that the guide plates have a long stroke, effectively guide and accelerate the airflow entering the second cavity, and increase the outflow airflow speed, which is conducive to increasing the blowing speed and expanding the blowing range, thereby improving the blowing experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 The figure is a top view of a bladeless fan lamp in the prior art.

[0046] Figure 2 This is a structural schematic diagram of the guide structure and wind wheel of Example 1 of the utility model.

[0047] Figure 3 This is a structural schematic diagram of the diversion structure of Example 1 of the present utility model.

[0048] Figure 4 for Figure 3 Enlarged schematic diagram of part K in the middle.

[0049] Figure 5 This is a schematic projection diagram of the guide vane of Example 1 of the utility model on the air outlet end surface.

[0050] Figure 6 It is a schematic projection diagram of the air guide structure of Example 1 of the utility model on the air outlet end surface.

[0051] Figure 7 This is a cross-sectional view of the guide structure and wind wheel of Example 1 of the utility model.

[0052] Figure 8 This is a schematic structural diagram of the cavity sealing component of Example 1 of the present utility model.

[0053] Figure 9 This is an exploded view of the diversion structure of Example 1 of the present utility model.

[0054] Figure 10 This is a schematic diagram of the result of the diversion structure of Example 2 of the present utility model.

[0055] Figure 11 This is a schematic structural diagram of a bladeless fan lamp according to Example 3 of the present utility model.

[0056] Figure 12 Graph showing wind speed test results of the bladeless fan lamp according to Example 3 of the present invention and a fan lamp in the prior art.

[0057] Markings in the figure:

[0058] 100- diversion structure;

[0059] 1- shell;

[0060] 11-first cavity, 12-second cavity, 13-air outlet, 14-inner wall, 15-cavity sealing member;

[0061] 101-air inlet, 102-annular air outlet, 111-die outlet;

[0062] 130-air outlet end face, 150-sealing chamber assembly;

[0063] 2- guide vane;

[0064] 20-flow guide body, 21-first flow guide portion, 22-second flow guide portion, 23-third flow guide portion, 24-fourth flow guide portion;

[0065] 201-first endpoint, 202-second endpoint, 203-third endpoint, 204-fourth endpoint; 210-diversion inlet;

[0066] 2010-first ring body, 2020-second ring body, 2030-third ring body, 2040-fourth ring body.

[0067] 3- wind wheel;

[0068] 31- wind wheel tail end, 32- wind wheel outlet;

[0069] 4-lamp panel;

[0070] Z-center line, L1-first direction;

[0071] 200-Motor. DETAILED DESCRIPTION

[0072] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings and specific embodiments. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0073] It should be noted that when an element is referred to as being “fixed to” another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or there may be an intermediate element.

[0074] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0075] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0076] Example 1

[0077] refer to Figure 2-Figure 9, this embodiment provides a guide structure 100 for guiding and accelerating the airflow, so that the airflow flows from the air outlet to the outside at a higher speed, and is conducive to expanding the air outlet range. The guide structure includes a shell 1 and a guide plate 2. Among them, the shell 1 serves as the main body of the guide structure 100 and has a structure that is narrow at the top and wide at the bottom. The shell 1 is provided with a first cavity 11, a second cavity 12 and an air outlet end 13. The first cavity 11 and the second cavity 12 are formed by the inner side wall 14 of the shell 1. The first cavity 11 and the second cavity 12 are interconnected to form a accommodating cavity of the shell 1. The first cavity 11 is used to install the wind wheel 3. The wind wheel 3 is a bladeless centrifugal wind wheel. After the airflow is accelerated by the wind wheel 3, it enters the second cavity 12 from the first cavity 11. It can be understood that the second cavity 12 is arranged below the first cavity 11 as an air outlet cavity, and the air outlet end 13 is arranged at the bottom end of the second cavity 12.

[0078] The guide vane 2 extends in an arc shape from the inner sidewall 14 of the housing 1 toward the second cavity 12. In this embodiment, the guide vane 2 and the housing 1 are integrally injection-molded. In other embodiments, the guide vane 2 and the housing 1 may be separate structures, for example, by adhesive bonding, ultrasonic welding, welding, or riveting to securely connect the guide vane 2 to the inner sidewall 14 of the housing 1, thereby directing and accelerating the airflow entering the second cavity 12.

[0079] In this embodiment, a plurality of guide vanes 2 are provided, and the second cavity 12 of the shell 1 is an annular cavity, that is, the inner side wall 14 of the shell 1 forms a ring structure around the second cavity 12, and the plurality of guide vanes 2 are evenly distributed in the circumferential direction of the shell 1 and are located in the second cavity 12.

[0080] Combined with reference Figure 5-Figure 7 The housing 1 has a center line Z, and the air outlet end 13 is surrounded to form an air outlet end surface 130. The center line Z and the air outlet end surface 130 intersect at a center point O. The angle between the two ends of the projection of the guide plate 2 on the air outlet end surface 130 and the center point O is α.

[0081] α satisfies the relationship: α=(360° / m)±5°,

[0082] Wherein, m is the number of guide vanes provided in the housing.

[0083] Preferably, m is an odd number, and m≥5. That is, the number of guide vanes 2 in the housing 1 is an odd number, such as 5, 7, or 9. In this embodiment, 7 guide vanes are evenly distributed in the circumferential direction of the housing 1.

[0084] Specifically, along the extension direction F of the guide vane 2 in the shell 1, in the projection of the guide vane 2 on the air outlet end surface 130, one end is P, corresponding to the projection of the head end of the guide vane 2 on the air outlet end surface 130; the other end is Q, corresponding to the projection of the tail end of the guide vane 2 on the air outlet end surface 130, α = ∠POQ = (360° / m) ± 5°.

[0085] In some embodiments, as Figure 5 As shown in projection view S1 in , when α = ∠POQ = (360° / m) + 5°, the leading end of one guide vane extends into the trailing end of the other, and correspondingly, the trailing end of that guide vane also extends into the leading end of the other. That is, the leading and trailing ends of the guide vanes intersect with the trailing and leading ends of adjacent guide vanes, respectively. This ensures that airflow exiting the trailing end (airflow exit) of one guide vane continuously enters the leading end (airflow entry) of the next guide vane.

[0086] In some embodiments, in the projection view, as Figure 5 As shown in projection view S2 in Figure 1, when α = ∠POQ = (360° / m) - 5°, a 5° angular gap is formed between the leading end of one guide vane and the trailing end of the other. This means that a 5° angular gap exists between each of the two adjacent guide vanes. When airflow exits the trailing end (the outlet end) of one guide vane, it can form local turbulence before entering the leading end (the inlet end) of the next guide vane.

[0087] In other embodiments, the projection view can also be set such that α = ∠POQ = (360° / m). That is, when the guide vanes on the inner wall are evenly distributed in the circumferential direction, the straight line OP also coincides with the straight line OQ. In this structure, the leading end of one guide vane and the trailing end of another adjacent guide vane are connected end to end in the projection view. When the airflow is discharged from the trailing end (airflow outlet end) of one guide vane, it immediately enters the leading end (airflow inlet end) of the other guide vane.

[0088] Furthermore, the guide plate 2 includes a guide body 20, a first guide portion 21, a second guide portion 22, and a third guide portion 23. The first guide portion 21, the second guide portion 22, and the third guide portion 23 are located at the edges of the guide body 20. In this embodiment, the first guide portion 21 is the front edge of the guide plate 2, and the second guide portion 22 is the rear edge of the guide plate 2. The third guide portion 13 is disposed between the first guide portion 11 and the second guide portion 12. The third guide portion 13 connects to the first guide portion 11 at a first endpoint 201, and to the second guide portion 12 at a second endpoint 202.

[0089] It should be noted that the airflow guide body 20 is located in the second cavity 12, with the first end 201 protruding toward the inner wall 14, and the second end 202 protruding toward the air outlet 13. Furthermore, the first end 201 is closer to the wind wheel 3 than the second end 202. That is, the first end 201 is located above the second end 202. Airflow accelerated by the wind wheel 3 enters the second cavity 12, passes through the first airflow guide 21, the first end 201, the third airflow guide 23, the second end 202, and the second airflow guide 22 in sequence, and then flows out of the air outlet 13.

[0090] The deflector 2 of this embodiment is integrally injection-molded with the housing 1. A fourth deflector portion 24 is also provided between the deflector 2 and the inner sidewall 14 of the housing 1. It will be appreciated that the fourth deflector portion 24 is located on the inner sidewall 14, meaning that the deflector body 20 is connected to the inner sidewall 14 via the fourth deflector portion 24. The fourth deflector portion 24 is also connected to the first deflector portion 21 and the second deflector portion 22, and the fourth deflector portion 24 connects to the first deflector portion 21 and the second deflector portion 22 at a third endpoint 203 and a fourth endpoint 204, respectively. The third endpoint is the airflow inlet, and the fourth endpoint is the airflow outlet.

[0091] The fourth endpoint 204 is adjacent to or connected to the air outlet end 13. In some embodiments, the fourth endpoint 204 is close to the air outlet end 13 and has a certain distance from the air outlet end 13; in some embodiments, the fourth endpoint 204 is connected to the air outlet end 13, that is, the second guide portion 22 and the fourth guide portion 24 meet at the air outlet end 13 to form the fourth endpoint 204. In this embodiment, the fourth endpoint 204 is connected to the air outlet end 13, and the airflow is ultimately guided by the second guide portion 22 to flow out of the air outlet end 13. Figure 2-Figure 4 The first air guide portion 21 is extended and formed in the following manner: starting from the fourth end point 204, the first air guide portion 21 first extends in an arc shape in a direction away from the inner side wall 14, and then extends in an arc shape in a direction close to the inner side wall 14. The first air guide portion 21 has a raised structure. The third air guide portion 23 is connected to the first end point 201 and the second end point 202 in a smooth arc-shaped line structure. The first air guide portion 21 has an arc-shaped raised structure, forming an air guide inlet 210. Correspondingly, the air guide body 20 has a slightly upward winding structure at the first end point 201, and then descends along the third air guide portion 23 to the second air guide portion 22. Based on this structure, on the one hand, the air flow can flow smoothly from the first air guide portion 21 into the air guide body 20, reducing the collision of the air flow with the air guide body 20, which is conducive to reducing noise; on the other hand, it can play a role in guiding the wind and ensure the amount of air flowing to the outside.

[0092] The second guide portion 22 can be a straight line structure or an arc line structure. When the second guide portion 22 is a straight line structure, it is connected to the second end and the fourth end in a bent shape.

[0093] In some embodiments, the deflector 2 may omit the second deflector portion. That is, the deflector 2 includes only the deflector body 20, the first deflector portion 21, the third deflector portion 23, and the fourth deflector portion 24. The first deflector portion 21 and the third deflector portion 23 are located at the edges of the deflector body 20, and the deflector body 20 is connected to the inner sidewall 14 via the fourth deflector portion 24. The deflector 2 omits the second deflector portion and the second endpoint in the deflector body 20. In this case, the deflector body 20 extends directly through the third deflector portion 23 to the inner sidewall 14 and connects to the inner sidewall 14 at the fourth endpoint 204. The fourth endpoint 204 is adjacent to or connected to the air outlet end 13. Preferably, the third deflector portion 23 and the fourth deflector portion 24 converge at the air outlet end 13 to form the fourth endpoint 204.

[0094] This embodiment utilizes a deflector with a second deflector portion. The first deflector portion 21, serving as the front edge of the deflector body 20, is longer than the second deflector portion 22, serving as the rear edge. This allows airflow to flow smoothly through the first deflector portion 21 into the deflector body 20, through the deflection cavity formed by the deflector body 20 and the inner wall 14, and then out to the shorter second deflector portion 22, ultimately exiting through the outlet end 13. This further increases the outflow velocity of the airflow.

[0095] refer to Figure 5-Figure 7 The shell 1 is a rotationally symmetrical body with the center line Z as the symmetry axis. The air outlet end 13 is surrounded to form an air outlet end surface 130. The center line Z passes vertically through the air outlet end surface 130 and intersects with it at the center point O.

[0096] With the air outlet end surface 130 as the base surface and the center point O as the center of the circle, in the projection view:

[0097] The projection of the first end point 201 of the guide plate 2 on the air outlet end surface is the first projection point A. A plurality of first projection points A surround the first projection point 201 to form a radius of R. OA The first ring body 2010;

[0098] The projection of the second end point 202 of the guide plate 2 on the air outlet end surface is the second projection point B. A plurality of second projection points B surround the second projection point 202 to form a radius of R. OB The second ring of 2020;

[0099] The projection of the third end point 203 of the guide plate 2 on the air outlet end surface is the third projection point C. A plurality of third projection points C surround the third projection point C to form a radius of R. OC The third projection point C coincides with the projection point P of the first end (airflow inlet end) of the guide plate 2 at the air outlet end surface 130;

[0100] The projection of the fourth end point 204 of the guide plate 2 on the air outlet end surface is the fourth projection point D. A plurality of fourth projection points D surround the fourth projection point D to form a radius of R. ODThe fourth ring body 2040; the fourth projection point D coincides with the projection point Q of the head and tail (airflow outlet end) of the guide plate 2 at the air outlet end surface 130;.

[0101] Further references Figure 5 and Figure 6 , the diversion structure has the following relationship:

[0102] α=(360° / m)±5°①,

[0103] β=0.3*α②;

[0104] Wherein, α is the angle ∠POQ between the two ends of the projection of the guide vane on the air outlet end surface and the center point O; Figure 5 As shown, α is also the angle between line segment OC and line segment OD;

[0105] β is the angle between the line segment OA of one guide plate and the line segment OD of the other guide plate adjacent to the guide inlet,

[0106] m is the number of guide vanes provided in the housing.

[0107] On the basis of the above-mentioned relational expressions ① and ②, the guide vane can be made to guide the airflow along the tangential direction of each guide portion, and the area of the guide vane inlet can be increased.

[0108] like Figure 5 As shown, the first ring body 2010, the third ring body 2030, the second ring body 2020 and the fourth ring body 2040 are distributed from the inside to the outside, and the ring bodies have the following relationship:

[0109] R OD -R OB =(R OC -R OA )±2.5③;

[0110] Among them, R OA 、R OB 、R OC and R OD are the radii of the first, second, third and fourth ring bodies respectively.

[0111] Based on the above relationship formula ③, the first arc portion 21, the third arc portion 22 and the second arc portion 23 of the guide body 20 have a smooth transition, which weakens the collision between the airflow and the guide vane, and is beneficial to reducing the noise of the guide vane when guiding and accelerating the airflow.

[0112] Combined with reference Figure 6 and Figure 7The wind wheel 3 has a wind wheel tail end 31, and the wind wheel tail end 31 is provided with a wind wheel outlet 32. After the wind wheel 3 rotates and accelerates, the airflow flows into the second cavity 12 from the wind wheel outlet 32. Among them, the distance between the wind wheel tail end 31 and the center line Z is R OE , R OA With R OE There is a relationship: 15mm≤R OA -R OE Through the above arrangement, the rotor outlet 32 of the rotor 3 has a minimum distance from the guide vane 2, so that the airflow can quickly flow into the second cavity 12 for guidance and further acceleration.

[0113] The direction parallel to the center line Z is the first direction L1 . The center line Z is also one of the normals of the air outlet end surface 130 . When the air outlet end surface 130 is parallel to the horizontal plane, the first direction L1 is a vertical direction.

[0114] like Figure 7 As shown, in the first direction L1, the following relationship exists:

[0115] 5mm≤(H3-H1)-H0≤10mm④;

[0116] Among them, H0 is the height of the wind wheel outlet,

[0117] H1 is the distance between the first end point 201 and the air outlet end surface 130 in the first direction L1,

[0118] H3 is the distance between the third end point 203 and the air outlet end surface 130 in the first direction L1.

[0119] On the basis of the above relational expression ④, the guide inlet 210 is made slightly smaller than the wind wheel outlet 32 .

[0120] As described above, m is the number of guide vanes 2 provided on the inner sidewall 14 of the housing 1, where m is an odd number and m ≥ 5. That is, an odd number of guide vanes 2 is provided in the housing 1, such as 5, 7, or 9. In this embodiment, 7 is preferred.

[0121] The extension direction F of the guide vane 2 is the same as the rotation direction of the wind wheel 3. It can be understood that the extension direction of the guide vane is from the first guide portion to the second guide portion, which is the same as the rotation direction of the wind wheel 3, thereby guiding and accelerating the airflow out of the wind wheel.

[0122] refer to Figure 2 and Figure 8Since the guide vane 2 and the housing 1 are integrally injection-molded, during injection molding, the housing needs to be provided with a mold outlet 111 to facilitate injection molding of the guide vane 2 and demolding. After injection molding, a cavity sealing member 15 is used to cover and connect to the mold outlet 111, so that the periphery of the second cavity 12 is a sealed structure. Multiple cavity sealing members 15 constitute a cavity sealing assembly 150, and the number of cavity sealing members 15 corresponds to the number of mold outlets 111 and guide vanes 2.

[0123] Figure 9 This is an exploded view of the diversion structure of this embodiment, as shown in Figure 9 As shown, the air guide structure 100 is provided with a lamp panel 4 in the second cavity 12. Furthermore, the housing 1 is provided with an air inlet 101. The housing 1 and the wind wheel 3 form a first air duct in the first cavity 11, which communicates with the air inlet 101. The housing 1 and the lamp panel 4 form a second air duct in the second cavity 12. The guide vane 2 is located in the second air duct, and the second air duct is provided with an annular air outlet 102, which communicates with the first air duct. In this way, airflow enters from the air inlet 101, is accelerated by the wind wheel in the first air duct, enters the second air duct, and flows out from the annular air outlet 102 to the outside under the guidance and further acceleration of the guide vane 2.

[0124] The guide structure provided in this embodiment is such that the airflow is accelerated by the wind wheel of the first cavity and then enters the second cavity. Thereafter, the airflow is accelerated by the guide body in the guide plate and multiple guide parts located at the edge of the guide body, so that the airflow flows in the second cavity at a higher flow rate and flows out from the air outlet end, which is beneficial to increase the blowing speed and expand the blowing range, thereby improving the blowing experience.

[0125] Example 2

[0126] like Figure 10 As shown, this embodiment provides another structure of a flow guide structure. The flow guide structure 100 includes a housing 1 and a flow guide plate 2. The housing 1 is provided with a first cavity and a second cavity. The flow guide plate is formed by protruding from the inner side wall of the housing 1 toward the second cavity in an arc shape. That is, in the process of forming the flow guide plate 2 on the housing 1, there is no need to first form the flow guide plate by forming a die and then covering the die with a cavity sealing member. Instead, the flow guide plate is directly protruded from the inner side wall of the housing, thereby facilitating production and processing.

[0127] Other descriptions about the guide plate and the guide structure are the same as those of the guide structure in Example 1 and will not be repeated here.

[0128] The guide structure provided in this embodiment accelerates the airflow by the wind wheel and then re-accelerates it by the guide body and multiple guide parts in the guide plate, so that the airflow flows in the second cavity at a higher flow rate and flows out from the air outlet, which is beneficial to increase the blowing speed and expand the blowing range, thereby improving the blowing experience.

[0129] Example 3

[0130] exist Figure 2-Figure 10 Based on reference Figure 11 , this embodiment provides a bladeless fan lamp, including a lighting module (not shown in the figure), a motor 200 and the guide structure 100 of Example 1 or Example 2. The lighting module is installed in the second cavity, and the lighting module is fixedly connected to the lamp panel, thereby providing a lighting function. The motor 200 is driven and connected to the wind wheel 3, so that the wind wheel rotates at high speed to accelerate the airflow. The bladeless fan lamp has the dual functions of blowing and lighting. In terms of the blowing function, it uses a guide structure to guide and accelerate the airflow, effectively guide and accelerate the airflow entering the second cavity, make the outflowing airflow velocity large, and expand the blowing range.

[0131] Figure 12 A wind speed test result diagram of the bladeless fan lamp of the embodiment and the existing fan lamp is given, wherein T1 is the wind speed curve of the existing fan lamp at a rotation speed of 900 rpm, and T2 and T3 are the wind speed curves of the bladeless fan lamp of this embodiment at rotation speeds of 900 rpm and 750 rpm respectively.

[0132] like Figure 12 As shown, under the rotation speeds of 900 rpm and 750 rpm, the blowing range of the bladeless fan lamp of this embodiment is wider than that of the existing fan lamp.

[0133] The above content is merely an example and illustration of the structure of the present invention. Although the description is relatively specific and detailed, it should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the concept of the present invention, and these obvious alternative forms are all within the scope of protection of the present invention.

Claims

1. The flow guide structure is characterized by: including a shell and a guide vane; The housing is provided with an air outlet and a first cavity and a second cavity which are interconnected. The first cavity is used to install the wind wheel. The second cavity is provided below the first cavity, and the air outlet is provided at the bottom end of the second cavity. The guide plate extends in an arc shape from the inner side wall of the shell toward the second cavity, and a plurality of the guide plates are evenly distributed in the circumference of the shell; The housing has a center line Z, the air outlet end is surrounded to form an air outlet end surface, and the center line Z intersects the air outlet end surface at a center point O; The included angle between the two ends of the projection of the guide vane on the air outlet end surface and the center point O is α, and α satisfies the relationship: α=(360° / m)±5°, where m is the number of guide vanes provided in the shell.

2. The flow guide structure according to claim 1, characterized in that: The guide plate includes a guide body and a first guide portion, a second guide portion and a third guide portion arranged at the edge of the guide body. The third guide portion is connected to the first guide portion and the second guide portion at a first end point and a second end point respectively. The first end point is closer to the wind wheel than the second end point.

3. The flow guide structure according to claim 2, characterized in that: The guide plate also includes a fourth guide portion, which is located on the inner side wall of the shell. The fourth guide portion is connected to the first guide portion and the second guide portion at a third endpoint and a fourth endpoint respectively, and the third endpoint is the airflow inlet end; the fourth endpoint is adjacent to or connected to the air outlet end, and the fourth endpoint is the airflow outlet end.

4. The flow guide structure according to claim 3, characterized in that: Starting from the fourth end point, the first guide portion first extends in an arc shape in a direction away from the inner side wall and then extends in an arc shape in a direction close to the inner side wall; the first guide portion is provided with a guide inlet, and the length of the first guide portion is greater than the length of the second guide portion.

5. The flow guide structure according to claim 3, characterized in that: With the air outlet end surface as the base surface and the center point O as the center of the circle, the projections of the first end point, the second end point, the third end point and the fourth end point of the guide plate on the air outlet end surface are respectively the first projection point A, the second projection point B, the third projection point C and the fourth projection point D; Among them, multiple first projection points A surround to form a radius R OA The first ring body; A plurality of second projection points B surround the OB The second ring of A plurality of third projection points C surround the radius R OC The third ring; A plurality of fourth projection points D surround the radius R OD The fourth ring.

6. The flow guide structure according to claim 5, characterized in that: With the following relationship: β＝0.3*α； The angle between line segment OC and line segment OD is the angle α between the two ends of the projection of the guide vane on the air outlet end surface and the center point O. β is the angle between the line segment OA of one guide plate and the line segment OD of the other guide plate adjacent to the guide inlet.

7. The flow guide structure according to claim 5, characterized in that: With the following relationship: R OD -R OB =(R OC -R OA )±2.5; Among them, R OA 、R OB 、R OC and R OD are the radii of the first, second, third and fourth ring bodies respectively.

8. The flow guide structure according to claim 7, characterized in that: The wind wheel has a wind wheel tail end, the wind wheel tail end is provided with a wind wheel outlet, and the distance between the wind wheel tail end and the center line Z is R OE , with the following relationship: 15mm≤R OA -R OE ≤25mm。 9. The flow guide structure according to claim 8, characterized in that: Taking the direction parallel to the center line Z as the first direction, in the first direction, the following relationship exists: 5mm≤(H3-H1)-H0≤10mm; in, H0 is the height of the wind wheel outlet, H1 is the distance between the first end point and the air outlet end face, H3 is the distance between the third end point and the air outlet end face.

10. The flow guide structure according to claim 1, characterized in that: It also includes a cavity sealing member; the guide plate and the shell are an integral injection molding structure, the shell is provided with a mold outlet, and the cavity sealing member covers and is connected to the mold outlet.

11. The flow guide structure according to claim 10, characterized in that: A lamp panel is installed in the second cavity; The housing is provided with an air inlet, the housing and the wind wheel form a first air duct at the first cavity, and the first air duct is communicated with the air inlet; The housing and the lamp panel form a second air duct at the second cavity. The guide plate is located in the second air duct. The second air duct is provided with an annular air outlet and communicates with the first air duct.

12. Bladeless fan lamp, characterized in that: It comprises a lighting module and a motor, and the guide structure according to any one of claims 1 to 10, wherein the lighting module is installed in the second cavity; and the motor is drivingly connected to the wind wheel.

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