Air outlet device and fan lamp

Abstract

The utility model relates to an air outlet device and a fan lamp, and the air outlet device comprises a shell, an air inlet and an air outlet, the wind wheel is rotatably arranged in the shell, and an annular accelerating cavity used for accelerating flowing of airflow is formed by the wind wheel; the air duct shell is arranged in the shell and forms an annular air duct cavity in the circumferential direction of the wind wheel, the annular air duct cavity communicates with the annular acceleration cavity, the air duct shell is provided with a first air inlet hole communicating with the ventilation opening, and the first air inlet hole coaxially communicates with the annular acceleration cavity; an annular air outlet communicated with the annular air duct cavity is formed in the bottom of the annular air duct cavity of the shell; the outer diameter d1 of the first air inlet hole, the outer diameter d2 of the wind wheel and the outer diameter D of the annular air duct cavity meet the following relations that (d1 / d2) is larger than or equal to 0.7 and smaller than or equal to 0.75, and (D / d2) is larger than or equal to 1.3 and smaller than or equal to 1.4. According to the air outlet device, the air outlet amount can be effectively increased, the air outlet speed and the air supply distance are increased, and the user experience is improved.

Description

Technical Field

[0001] The present application relates to the technical field of fans, and in particular to an air outlet device and a fan light. Background Art

[0002] A fan light is a product that combines a fan and a lamp. It can not only blow air but also provide lighting, achieving the multi-functional use of the product. To improve the aesthetics and safety of the fan light, concealed fan lights have emerged in the existing market. When in use, the fan blades are concealed in the air duct, avoiding dust on the fan blades and facilitating daily maintenance by users.

[0003] In the related art, due to its own structural limitations, the concealed fan light has a small air volume and wind speed, resulting in a short air supply distance and a poor overall blowing effect, affecting the user experience. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. For this reason, the present application provides an air outlet device and a fan light. The air outlet device can effectively increase the air volume, improve the air outlet speed and the air supply distance, and enhance the user experience.

[0005] In a first aspect, the present application provides an air outlet device, including:

[0006] A housing, with a plurality of ventilation openings provided on its outer wall;

[0007] An impeller, rotatably arranged in the housing, and the impeller forms an annular acceleration chamber for accelerating the flow of air;

[0008] An air duct housing, arranged in the housing and forming an annular air duct chamber around the circumference of the impeller. The annular air duct chamber is communicated with the annular acceleration chamber, and the air duct housing is provided with a first air inlet hole communicated with the ventilation opening, and the first air inlet hole is coaxially communicated with the annular acceleration chamber;

[0009] The housing forms an annular air outlet communicated with the annular air duct chamber at the bottom of the annular air duct chamber;

[0010] Wherein, the outer diameter of the first air inlet hole is d1, the outer diameter of the impeller is d2, and the outer diameter D of the annular air duct chamber satisfy the following relationship: 0.7 ≤ (1 / d2)d ≤ 0.75, 1.3 ≤ (D / d2) ≤ 1.4.

[0011] The air outlet device according to the first aspect of the present application has at least the following beneficial effects:

[0012] The air outlet device of the present application, through the cooperation of the housing, the air wheel and the air duct housing, reasonably designs the outer diameter of the first air inlet hole as d1 and the outer diameter of the air wheel as d2, and controls the ratio d1 / d2 of the outer diameter d1 of the first air inlet hole to the outer diameter d2 of the air wheel within the range of 0.7 to 0.75. Reasonably designs the outer diameter D of the annular air duct cavity and the outer diameter d2 of the air wheel, and controls the ratio D / d2 of the outer diameter D of the annular air duct cavity to the outer diameter d2 of the air wheel within the range of 1.3 to 1.4, so that the air flow can flow out more evenly from the annular air outlet, improving the air outlet volume, air outlet speed and air supply distance.

[0013] In some embodiments, a second air inlet hole is formed on one side of the air wheel close to the first air inlet hole. The first air inlet hole, the second air inlet hole and the annular acceleration cavity are coaxially connected in sequence, and the outer diameter of the first air inlet hole is less than or equal to the outer diameter of the second air inlet hole.

[0014] In some embodiments, the second air inlet hole and the first air inlet hole are axially spaced along the axis of the air wheel, and the axial distance d4 between the second air inlet hole and the first air inlet hole satisfies: 3mm < d4 < 8mm.

[0015] In some embodiments, an annular grille is formed on the housing. Opposite ends of the annular grille are respectively connected to opposite ends of the annular air outlet to cover the annular air outlet. The annular grille divides the annular air outlet into a plurality of sub-air outlets.

[0016] In some embodiments, the annular grille includes a plurality of radial rib blocks circumferentially spaced along the annular air outlet, and the included angle formed by adjacent two radial rib blocks is equal.

[0017] In some embodiments, the number of the radial rib blocks is n1, the included angle formed by adjacent two radial rib blocks is β, and the n1 and the β satisfy: β = 360 / n1, 12 < n1 ≤ 24.

[0018] In some embodiments, the annular grille further includes a plurality of circumferential rib blocks radially spaced along the annular air outlet. The circumferential rib blocks are annular, and the distance between adjacent two circumferential rib blocks is equal.

[0019] In some embodiments, the number of the circumferential rib blocks is n2, the distance between adjacent two circumferential rib blocks is a1, and the n2, the a1, the D and the d2 satisfy: a1 = (D - d2) / (2*n2), 4 ≤ n2 < 7.

[0020] In some embodiments, the outer diameter of the circumferential rib block gradually increases along the axis of the circumferential rib block and in the direction away from the annular air outlet.

[0021] In some embodiments, the angle α between the line connecting the end of the circumferential rib near the annular air outlet and the end of the circumferential rib far from the annular air outlet and the axis of the annular air outlet satisfies: 30° ≤ α < 45°;

[0022] And the length L of the line connecting the end of the circumferential rib near the annular air outlet and the end of the circumferential rib far from the annular air outlet satisfies: 20 mm ≤ L ≤ 35 mm.

[0023] In some embodiments, a plurality of the ventilation openings are circumferentially and spaced apart on the side wall of the housing. A ventilation cavity is formed between the housing and the air duct housing, and the ventilation cavity is communicated with the first air inlet hole.

[0024] In some embodiments, the air outlet device further includes a filter screen, and the filter screen is connected to the housing and covers all the ventilation openings.

[0025] In a second aspect, an embodiment of the present application provides a fan lamp, including:

[0026] The air outlet device described above;

[0027] A lamp, installed at the bottom of the housing and coaxially distributed with the wind wheel, and the vertical projection of the wind wheel is within the vertical projection of the lamp or coincides with the vertical projection of the lamp.

[0028] The fan lamp according to the second aspect of the present application has at least the following beneficial effects:

[0029] The fan lamp of the present application not only combines the functions of blowing and lighting, but also has better air outlet volume, air outlet speed and air supply distance, improving the overall performance of the fan lamp.

[0030] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the following specifically describes the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. And in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0032] Figure 1 It is a schematic structural diagram of the air outlet device according to an embodiment of the present application.

[0033] Figure 2 Structural decomposition diagram of the air outlet device according to the embodiment of the present application.

[0034] Figure 3 is Figure 2 Partial enlarged view of part A in

[0035] Figure 4 Schematic cross-sectional structure of the air outlet device according to the embodiment of the present application.

[0036] Figure 5 Schematic structural diagram of the wind wheel according to the embodiment of the present application.

[0037] Figure 6 Schematic structural diagram of the air duct housing according to the embodiment of the present application.

[0038] Figure 7 Schematic cross-sectional structure diagram of the air duct housing according to the embodiment of the present application.

[0039] Figure 8 Airflow flow trajectory diagram of the air outlet device according to the embodiment of the present application.

[0040] Figure 9 Another schematic cross-sectional structure of the air outlet device according to the embodiment of the present application.

[0041] Figure 10 is Figure 9 Partial enlarged view of part B in

[0042] Figure 11 is Figure 9 Partial enlarged view of part C in

[0043] Figure 12 Bottom view of the structure of the annular grille according to the embodiment of the present application.

[0044] Figure 13 Air outlet airflow simulation cloud diagram when (D / d2) of the air outlet device according to the embodiment of the present application is equal to 1.2.

[0045] Figure 14 Air outlet airflow simulation cloud diagram when (D / d2) of the air outlet device according to the embodiment of the present application is equal to 1.3.

[0046] Figure 15 Air outlet airflow simulation cloud diagram when (D / d2) of the air outlet device according to the embodiment of the present application is equal to 1.4.

[0047] Figure 16 Air outlet airflow simulation cloud diagram when (D / d2) of the air outlet device according to the embodiment of the present application is equal to 1.45.

[0048] Figure 17 Air outlet airflow simulation cloud diagram when n1 = 12 and β = 30° of the air outlet device according to the embodiment of the present application.

[0049] Figure 18 It is the simulated cloud diagram of the air outlet airflow when n1 = 24 and β = 15° for the air outlet device of the embodiment of the present application.

[0050] Figure 19 It is the simulated cloud diagram of the air outlet airflow when α is equal to 30° for the air outlet device of the embodiment of the present application.

[0051] Figure 20 It is the simulated cloud diagram of the air outlet airflow when α is equal to 35° for the air outlet device of the embodiment of the present application.

[0052] Figure 21 It is the simulated cloud diagram of the air outlet airflow when α is equal to 40° for the air outlet device of the embodiment of the present application.

[0053] Figure 22 It is the simulated cloud diagram of the air outlet airflow when α is equal to 45° for the air outlet device of the embodiment of the present application.

[0054] Explanation of reference numerals: housing 100; ventilation opening 110; annular air outlet 120; sub-air outlet 121; annular grille 130; radial rib **********; circumferential rib **********; ventilation cavity 140; top cover 150; support skeleton 160; base 170; wind wheel 200; annular acceleration cavity 210; second air inlet hole 220; annular skeleton 230; wind blade 240; air duct housing 300; first air inlet hole 310; annular air duct cavity 320; filter net 400; lamp 500; rotary drive member 600. Detailed implementation manners

[0055] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0056] In the description of the present application, it should be understood that if there appear such terms as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application 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 construed as a limitation to the present application.

[0057] In addition, if the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0058] In this application, unless otherwise clearly stipulated and defined, if terms such as "installed", "connected", "joined", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0059] In this application, unless otherwise clearly stipulated and defined, if there is a description such as a first feature being "on" or "under" a second feature, the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0060] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0061] A fan light is a product that combines a fan and a lamp. It can not only blow air but also provide lighting, achieving the multi-functional use of the product. To improve the aesthetics and safety of the fan light, hidden fan lights have emerged in the existing market. When a hidden fan light is in use, the fan blades are hidden inside the air duct, avoiding the fan blades from getting dusty and facilitating the daily maintenance of users.

[0062] In the related art, due to its own structural limitations, the air volume and air speed of a concealed fan light are small, resulting in a short air supply distance and a poor overall blowing effect, which affects the user experience.

[0063] Based on this, one or more embodiments of the present application provide an air outlet device. Through the cooperative setting of the housing, the air wheel, and the air duct housing, the outer diameter of the first air inlet hole and the outer diameter of the air wheel are reasonably designed, and the ratio of the outer diameter of the first air inlet hole to the outer diameter of the air wheel is controlled within the range of 0.7 to 0.75. The outer diameter of the annular air duct cavity and the outer diameter of the air wheel are reasonably designed, and the ratio of the outer diameter of the annular air duct cavity to the outer diameter of the air wheel is controlled within the range of 1.3 to 1.4, which can make the air flow out more uniformly from the annular air outlet, improve the air volume, air speed, and air supply distance of the air outlet, and enhance the user experience.

[0064] See Figure 1 , Figure 2 , Figure 3 and Figure 4 , an embodiment of the present application provides an air outlet device, which includes a housing 100, an air wheel 200, and an air duct housing 300.

[0065] A plurality of ventilation openings 110 are provided on the outer wall of the housing 100. The air wheel 200 is rotatably arranged in the housing 100, and the air wheel 200 forms an annular acceleration cavity 210 for accelerating the air flow.

[0066] The air duct housing 300 is arranged in the housing 100 and forms an annular air duct cavity 320 around the circumference of the air wheel 200. The annular air duct cavity 320 is communicated with the annular acceleration cavity 210, and the air duct housing 300 is provided with a first air inlet hole 310 communicated with the ventilation opening 110. The first air inlet hole 310 is coaxially communicated with the annular acceleration cavity 210.

[0067] The housing 100 forms an annular air outlet 120 communicated with the annular air duct cavity 320 at the bottom of the annular air duct cavity 320.

[0068] Among them, the outer diameter of the first air inlet hole 310 is d1, the outer diameter of the air wheel 200 is d2, and the outer diameter of the annular air duct cavity 320 is D, satisfying the following relationship: 0.7 ≤ (d1 / d2) ≤ 0.75, 1.3 ≤ (D / d2) ≤ 1.4.

[0069] It should be noted that, see Figure 1 , Figure 4 , in the present application, the housing 100 can be a cylinder or a regular rotating body such as a square body. The plurality of ventilation openings 110 can be opened on the side wall of the housing 100 and are spaced circumferentially along the housing 100. Of course, the plurality of ventilation openings 110 can also be provided on the top of the housing 100. The ventilation openings 110 can be, but are not limited to, through holes with regular shapes such as round holes and square holes.

[0070] Refer to again Figure 2 、 Figure 4 and Figure 5 As shown in FIGS.

[0071] When the annular frame 230 drives all the blades 240 thereon to rotate, the annular acceleration chamber 210 formed integrally by the wind wheel 200 communicates with the ventilation opening 110 through the first air inlet hole 310 on the air duct housing 300. Thus, external air flow is inhaled into the annular acceleration chamber 210 through the first air inlet hole 310, and the air flow is pressurized and accelerated in the annular acceleration chamber 210. The wind wheel 200 is in a disc shape and includes an annular frame 230 and a plurality of blades 240 provided on the annular frame 230. The circumferential side of the annular frame 230 is hollowed out, the middle part of the annular frame 230 is hollow, and the top of the annular frame 230 is open, so that the first air inlet hole 310 on the air duct housing 300 is coaxially communicated with the annular acceleration chamber 210. The plurality of blades 240 are spaced along the circumferential side of the annular frame 230, and the blades 240 are in an arc shape and are curved arcuately from the circumferential side of the annular frame 230 towards the axis of the annular frame 230. The annular frame 230 and all the blades 240 define the annular acceleration chamber 210.

[0072] It can also be understood that when the wind wheel 200 rotates, through the flow disturbance effect of the blades 240 thereon, the air flow in the annular acceleration chamber 210 is formed into a vortex for pressurization, accelerating the air flow.

[0073] In addition, refer to Figure 2 and Figure 4 A rotary drive member 600 is further installed in the housing 100. The output end of the rotary drive member 600 is connected to the wind wheel 200 to drive the wind wheel 200 to rotate about its own axis. Specifically, the rotary drive member 600 can be a motor or a motor, and the output end of the rotary drive member 600 is coaxially connected to the annular frame 230 of the wind wheel 200, thereby driving the annular frame 230 to drive all the blades 240 thereon to rotate.

[0074] It should also be noted that refer to Figure 2 、 Figure 4 、 Figure 6 and Figure 7 In this application, the air duct housing 300 is in a circular ring cover shape. The upper end of the air duct housing 300 is open to form the first air inlet hole 310 communicating with the ventilation opening 110. The first air inlet hole 310 is in a circular hole shape and is located at the upper end of the wind wheel 200. The lower end of the air duct housing 300 is connected to the housing 100.

[0075] It is easy to understand that the air duct housing 300 surrounds and covers the wind wheel 200, thus forming an annular air duct cavity 320 together with the wind wheel 200 and the housing 100. Along the radial direction of the wind wheel 200, the annular air duct cavity 320 is continuously distributed and interconnected with the annular acceleration cavity 210 formed by the wind wheel 200. It can also be understood that the axis of the annular acceleration cavity 210 coincides with the axis of the annular air duct cavity 320.

[0076] In this way, the air flow that is pressurized and accelerated in the annular acceleration cavity 210 flows into the annular air duct cavity 320 under the rotation of the wind wheel 200. During the flow in the annular air duct cavity 320, the air flow will also be pressurized and accelerated under the rotation of the wind wheel 200.

[0077] It should also be noted that, referring to Figure 2 、 Figure 3 and Figure 8 In this application, the housing 100 forms an annular air outlet 120 communicating with the annular air duct cavity 320 at the bottom of the annular air duct cavity 320. It can be understood that the bottom of the annular air duct cavity 320 is circular, the annular air outlet 120 coincides with the bottom of the annular air duct cavity 320, and the air flow in the annular air duct cavity 320 is thrown out from the annular air outlet 120 under the rotation of the wind wheel 200, achieving the effect of sending out air outward.

[0078] It should be understood that when the air outlet device of this application is configured on a ceiling fan light, the air outlet device is vertically installed on the ceiling of the room as a whole, and the annular air outlet 120 on the housing 100 faces the ground of the room.

[0079] Referring to Figure 2 、 Figure 4 and Figure 8 where Figure 8 the dashed arrows in represent the air flow direction. When the air outlet device works, the wind wheel 200 rotates, and the annular acceleration cavity 210 formed by the wind wheel 200 is communicated with the ventilation opening 110 on the housing 100 through the first air inlet hole 310 on the air duct housing 300, so as to introduce the external air flow into the annular acceleration cavity 210 and make the air flow pressurized and accelerated in the annular acceleration cavity 210. The air flow that is pressurized and accelerated in the annular acceleration cavity 210 flows into the annular air duct cavity 320 under the rotation of the wind wheel 200, and the air flow in the annular air duct cavity 320 is thrown out from the annular air outlet 120 at the bottom of the housing 100 under the rotation of the wind wheel 200, achieving the effect of sending out air outward.

[0080] Based on the above principle, further, referring to Figure 5 、 Figure 6 、 Figure 7 and Figure 9, in this application, the outer diameter d1 of the first air inlet hole 310, the outer diameter d2 of the air wheel 200, and the outer diameter D of the annular air duct cavity 320 satisfy the following relationship: 0.7 ≤ (d1 / d2) ≤ 0.75, 1.3 ≤ (D / d2) ≤ 1.4.

[0081] It can be understood that when the air wheel 200 rotates, the external air flow flows axially into the annular acceleration cavity 210 of the air wheel 200 from the first air inlet hole 310 on the air duct housing 300.

[0082] The first air inlet hole 310, the air wheel 200, the annular acceleration cavity 210, the air duct housing 300, the annular air duct cavity 320, and the annular air outlet 120 are all regular rotating bodies. The outer diameter d1 of the first air inlet hole 310 is the air inlet diameter of the air wheel 200, and the outer diameter d2 of the air wheel 200 is also the diameter of the air wheel 200 and the diameter of the annular acceleration cavity 210.

[0083] It is easy to understand that the annular air duct cavity 320 is a circular ring cavity. The outer diameter D of the annular air duct cavity 320 is the outer diameter of the circular ring, and the inner diameter of the annular air duct cavity 320 is equal to the inner diameter of the circular ring, that is, equal to the diameter of the air wheel 200.

[0084] By reasonably designing the outer diameter d1 of the first air inlet hole 310 and the outer diameter d2 of the air wheel 200, and controlling the ratio d1 / d2 of the outer diameter d1 of the first air inlet hole 310 to the outer diameter d2 of the air wheel 200 within the range of 0.7 to 0.75, the air flow can enter the annular acceleration cavity 210 formed by the air wheel 200 more fully along the axial direction, so that the air flow can be efficiently pressurized and accelerated in the annular acceleration cavity 210, and the air flow rate can be increased. If the first air inlet hole 310 is too large or too small, it will affect the stability of the air flow entering the annular acceleration cavity 210 formed by the air wheel 200 along the axial direction.

[0085] See Figures 13 to 16 , Figure 13 is the air outlet air flow simulation cloud map of the air outlet device of this application when (D / d2) = 1.2; Figure 14 is the air outlet air flow simulation cloud map of the air outlet device of this application when (D / d2) = 1.3; Figure 15 is the air outlet air flow simulation cloud map of the air outlet device of this application when (D / d2) = 1.4; Figure 16 is the air outlet air flow simulation cloud map of the air outlet device of this application when (D / d2) = 1.45.

[0086] Among them, in Figures 13 to 16 , the ordinate is the air supply distance, the unit is m, the depth of the gray scale corresponds to the magnitude of the wind speed, the darker the gray scale, the smaller the wind speed, and the lighter the gray scale, the larger the wind speed; the width covered by the gray scale corresponds to the air supply range, and Figures 13 to 16The rotational speeds of the wind wheels 200 of the corresponding air outlet devices are the same. At the same time, d1 / d2 is also equal, and 0.7 ≤ (d1 / d2) ≤ 0.75.

[0087] From Figures 13 to 16 It can be clearly seen that at a position 0.5 m away from the annular air outlet 120, when D / d2 of the air outlet device is 1.2, its wind speed is 1.11 m / s; when D / d2 of the air outlet device is 1.3, its wind speed is 1.65 m / s; when D / d2 of the air outlet device is 1.4, its wind speed is 2.24 m / s; when D / d2 of the air outlet device is 1.45, its wind speed is less than 1.65 m / s.

[0088] Similarly, at other positions 0.5 m away from the annular air outlet 120, when D / d2 of the air outlet device is 1.3 and 1.4 respectively, the corresponding wind speed / air volume and air supply distance are greater than those when D / d2 of the air outlet device is 1.2 and 1.45 respectively.

[0089] Thus, it can be concluded that when the outer diameter d2 of the wind wheel 200 and the outer diameter D of the annular air duct cavity 320 satisfy 1.3 ≤ (D / d2) ≤ 1.4, the air outlet wind speed, air outlet air volume, and air supply distance of the air outlet device are effectively improved.

[0090] By reasonably designing the outer diameter D of the annular air duct cavity 320 and the outer diameter d2 of the wind wheel 200, and controlling the ratio D / d2 of the outer diameter D of the annular air duct cavity 320 to the outer diameter d2 of the wind wheel 200 within the range of 1.3 to 1.4, the air flow can flow out more evenly from the annular air outlet 120, improving the air outlet air volume, air outlet wind speed, and air supply distance.

[0091] It is not difficult to understand that for the air outlet device of the present application, through the cooperative setting of the housing 100, the wind wheel 200, and the air duct housing 300, reasonably designing the outer diameter d1 of the first air inlet hole 310 and the outer diameter d2 of the wind wheel 200, controlling the ratio d1 / d2 of the outer diameter d1 of the first air inlet hole 310 to the outer diameter d2 of the wind wheel 200 within the range of 0.7 to 0.75, reasonably designing the outer diameter D of the annular air duct cavity 320 and the outer diameter d2 of the wind wheel 200, and controlling the ratio D / d2 of the outer diameter D of the annular air duct cavity 320 to the outer diameter d2 of the wind wheel 200 within the range of 1.3 to 1.4, the air flow can flow out more evenly from the annular air outlet 120, improving the air outlet air volume, air outlet wind speed, and air supply distance.

[0092] In some embodiments of the present application, refer to Figure 4 and Figure 5, a second air inlet hole 220 is formed on one side of the wind wheel 200 close to the first air inlet hole 310. The first air inlet hole 310, the second air inlet hole 220 and the annular acceleration chamber 210 are coaxially communicated in sequence, and the outer diameter of the first air inlet hole 310 is less than or equal to the outer diameter of the second air inlet hole 220.

[0093] Specifically, the second air inlet hole 220 is formed at the top end of the wind wheel 200. Both the second air inlet hole 220 and the first air inlet hole 310 are circular holes and are coaxial. Along the axial direction of the wind wheel 200 and in the direction close to the annular air outlet 120, the first air inlet hole 310, the second air inlet hole 220 and the annular acceleration chamber 210 are coaxially communicated in sequence.

[0094] By forming the second air inlet hole 220 on one side of the wind wheel 200 close to the first air inlet hole 310 and making the outer diameter of the first air inlet hole 310 less than or equal to the outer diameter of the second air inlet hole 220, the vertical projection of the first air inlet hole 310 relative to the housing 100 is within the vertical projection of the second air inlet hole 220 relative to the housing 100 or coincides with the vertical projection of the second air inlet hole 220 relative to the housing 100.

[0095] In this way, the air flow from the first air inlet hole 310 can more fully flow into the annular acceleration chamber 210 to be pressurized and accelerated, improving the pressurization and acceleration efficiency of the annular acceleration chamber 210 formed by the wind wheel 200 for the air flow.

[0096] Further, referring to Figure 9 and Figure 10 , the second air inlet hole 220 and the first air inlet hole 310 are axially spaced apart along the wind wheel 200, and the axial spacing d4 between the second air inlet hole 220 and the first air inlet hole 310 satisfies: 3 mm < d4 < 8 mm.

[0097] Specifically, the top end of the wind wheel 200 and the top end of the air duct housing 300 are spaced apart, and a clearance is formed therebetween. The second air inlet hole 220 is formed at the top end of the wind wheel 200. Correspondingly, the first air inlet hole 310 is formed at the top end of the air duct housing 300. The spacing of the clearance formed between the top end of the wind wheel 200 and the top end of the air duct housing 300 is equal to the axial spacing d4 between the second air inlet hole 220 and the first air inlet hole 310, and d4 satisfies: 3 mm < d4 < 8 mm.

[0098] With such a setting, on the one hand, it avoids structural interference between the wind wheel 200 and the air duct housing 300, ensures a safe clearance between the wind wheel 200 and the air duct housing 300, and enables the wind wheel 200 to rotate stably; on the other hand, it can reduce the air flow rate that flows into the annular air duct cavity 320 through the gap between the second air inlet hole 220 and the first air inlet hole 310 without being pressurized and accelerated by the wind wheel 200, reduce the air intake leakage between the wind wheel 200 and the air duct housing 300, and also improve the pressurization and acceleration efficiency of the annular acceleration cavity 210 formed by the wind wheel 200 on the air flow.

[0099] In some embodiments of the present application, referring to Figure 2 and Figure 3 , an annular grille 130 is formed on the housing 100. The opposite ends of the annular grille 130 are respectively connected to the opposite ends of the annular air outlet 120 to cover the annular air outlet 120, and the annular grille 130 divides the annular air outlet 120 into a plurality of sub-air outlets 121.

[0100] It can be understood that referring to Figure 2 , Figure 3 , Figure 9 , Figure 11 and Figure 12 , both the annular grille 130 and the annular air outlet 120 are circular. The difference between the outer diameter and the inner diameter of the annular air outlet 120 is the ring width d3 of the annular air outlet 120. The ring width d3 of the annular air outlet 120 is equal to half of the difference between the outer diameter of the annular air duct cavity 320 and the outer diameter d2 of the wind wheel 200. The ring width of the annular grille 130 is equal to the ring width d3 of the annular air outlet 120, so that the annular grille 130 completely covers the annular air outlet 120. It can also be understood that the vertical projection of the annular air outlet 120 coincides with the vertical projection of the annular grille 130, and the annular grille 130 divides the annular air outlet 120 into a plurality of sub-air outlets 121.

[0101] By forming the annular grille 130 covering the annular air outlet 120 on the housing 100, the annular grille 130 divides the annular air outlet 120 into a plurality of sub-air outlets 121, enabling the air flow in the annular air duct cavity 320 to be sent out more evenly, increasing the air flow velocity at the annular air outlet 120, and further increasing the air volume, air flow velocity and air supply distance of the air outlet.

[0102] Furthermore, referring to Figure 12 , the annular grille 130 includes a plurality of radial rib blocks 131 distributed at intervals along the circumference of the annular air outlet 120, and the included angle formed by adjacent two radial rib blocks 131 is equal.

[0103] Specifically, both ends of the radial rib blocks 131 are respectively connected to the inner ring and the outer ring of the annular grille 130, and all the radial rib blocks 131 are integrally formed with the inner ring and the outer ring of the annular grille 130, which improves the overall processing and forming efficiency of the annular grille 130.

[0104] It can be understood that the radial rib blocks 131 are strip-shaped, all the radial rib blocks 131 are radially distributed, and the included angle formed by two adjacent radial rib blocks 131 can be understood as the included angle between the plane where the radial rib block 131 is located and the plane where the adjacent radial rib block 131 is located. A sub-air outlet 121 is formed between two adjacent radial rib blocks 131.

[0105] By arranging a plurality of radial rib blocks 131 and making the included angles formed by two adjacent radial rib blocks 131 equal, all the radial rib blocks 131 are radially distributed along the annular track of the annular air outlet 120, so as to divide the annular air outlet 120 into a plurality of sub-air outlets 121 with equal areas. Further, the air flow in the annular air duct cavity 320 can be sent out more evenly, the air flow velocity of the annular air outlet 120 is increased, and further the air volume, the air flow velocity and the air supply distance of the air outlet are improved.

[0106] Further, referring to Figure 3 and Figure 12 , the number of the radial rib blocks 131 is n1, the included angle formed by two adjacent radial rib blocks 131 is β, and n1 and β satisfy: β = 360 / n1, 12 < n1 ≤ 24, that is, 15° ≤ β < 30°.

[0107] Referring to Figure 17 and Figure 18 , Figure 17 is the air flow simulation cloud map of the air outlet device of the present application when n1 = 12 and β = 30°, Figure 18 is the air flow simulation cloud map of the air outlet device of the present application when n1 = 24 and β = 15°. Figure 17 and Figure 18 The remaining structures and related parameters of the air outlet devices of

[0108] From Figure 17 and Figure 18 it can be clearly seen that when the number n1 of the radial rib blocks 131 is 12 or 24, the air supply distance of the air outlet device can reach more than 2 m; when the number n1 of the radial rib blocks 131 is 12 and the included angle β formed by two adjacent radial rib blocks 131 is 30°, the air supply range increases. As the number n1 of the radial rib blocks 131 increases to 24, the air supply range decreases, the wind speed in the central area of the air supply range is more concentrated, and the wind feeling is stronger.

[0109] It can be obtained that when the number n1 of the radial rib blocks 131 and the included angle β formed by two adjacent radial rib blocks 131 satisfy β = 360 / n1 and 12 < n1 ≤ 24, the air outlet speed, air outlet volume and air outlet distance of the air outlet device all meet the normal air supply requirements and satisfy the user's usage requirements.

[0110] Furthermore, referring to Figure 3 , Figure 9 , Figure 11 and Figure 12 , the annular grille 130 further includes a plurality of circumferential rib blocks 132 that are radially spaced along the annular air outlet 120. The circumferential rib blocks 132 are annular, and the distance between two adjacent circumferential rib blocks 132 is equal.

[0111] The distance between two adjacent circumferential rib blocks 132 can be understood as the distance between the circles where two adjacent circumferential rib blocks 132 are located.

[0112] A plurality of radial rib blocks 131 that are circumferentially spaced along the annular air outlet 120 and a plurality of circumferential rib blocks 132 that are radially spaced along the annular air outlet 120 divide the annular air outlet 120 into a plurality of sub-air outlets 121. In this way, it further enables the air flow in the annular air duct cavity 320 to be sent out more evenly, improves the air outlet flow rate of the annular air outlet 120, and further improves the air outlet volume, air outlet speed and air supply distance.

[0113] Furthermore, referring to Figure 12 again, the number of the circumferential rib blocks 132 is n2, the distance between two adjacent circumferential rib blocks 132 is a1, and n2, a1, D and d2 satisfy: a1 = (D - d2) / (2 * n2), 4 ≤ n2 < 7.

[0114] By reasonably designing the outer diameter D of the annular air duct cavity 320, the outer diameter d2 of the wind wheel 200, the number n2 of the circumferential rib blocks 132 and the distance a1 between two adjacent circumferential rib blocks 132, so that n2, a1, D and d2 satisfy a1 = (D - d2) / (2 * n2), 4 ≤ n2 < 7, it can enable the air flow to flow out of the annular air outlet 120 more evenly, and improve the air outlet volume, air outlet speed and air supply distance.

[0115] In some embodiments, referring to Figure 2 , Figure 3 and Figure 11 , the outer diameter of the circumferential rib block 132 gradually increases along the axis of the circumferential rib block 132 and in the direction away from the annular air outlet 120.

[0116] Specifically, the circumferential rib block 132 is in a ring shape, and the annular opening formed by the circumferential rib block 132 is in a flared or trumpet shape, so that an air outlet channel inclined relative to the axis of the annular air outlet 120 is formed between two adjacent circumferential rib blocks 132. The plurality of air outlet channels formed by all the circumferential rib blocks 132 are all inclined outward relative to the axis of the annular air outlet 120, and each air outlet channel has a certain extension length.

[0117] In this way, when the air flow in the annular air duct cavity 320 is thrown out from the annular air outlet 120 under the rotation of the wind wheel 200 and enters the air outlet channel formed between two adjacent circumferential rib blocks 132, the air outlet channel with a certain extension length and inclination can further accelerate the air flow, and at the same time make the air flow flow out obliquely from the outlet end of the air outlet channel. That is, the air outlet channel with a certain extension length and inclination can make the air flow spray outwards at a relatively high flow rate, increasing the air outlet speed and the air outlet range of the air outlet device, and further improving the air outlet volume, the air outlet speed and the air supply distance.

[0118] Further, referring to Figure 9 and Figure 11 , the angle α between the connection line between the end of the circumferential rib block 132 close to the annular air outlet 120 and the end of the circumferential rib block 132 far from the annular air outlet 120 and the axis of the annular air outlet 120 satisfies: 30° ≤ α < 45°.

[0119] And the length L of the connection line between the end of the circumferential rib block 132 close to the annular air outlet 120 and the end of the circumferential rib block 132 far from the annular air outlet 120 satisfies: 20 mm ≤ L ≤ 35 mm.

[0120] It should be understood that the angle α between the connection line between the end of the circumferential rib block 132 close to the annular air outlet 120 and the end of the circumferential rib block 132 far from the annular air outlet 120 and the axis of the annular air outlet 120 is the inclination angle of the air outlet channel formed between two adjacent circumferential rib blocks 132 relative to the axis of the annular air outlet 120.

[0121] Similarly, the length L of the connection line between the end of the circumferential rib block 132 close to the annular air outlet 120 and the end of the circumferential rib block 132 far from the annular air outlet 120 is the length of the air outlet channel formed between two adjacent circumferential rib blocks 132.

[0122] By designing the inclination angle of the air outlet channel formed between two adjacent circumferential rib blocks 132 relative to the axis of the annular air outlet 120 in the range of greater than or equal to 30° and less than 45°, and designing the length of the air outlet channel in the range of greater than or equal to 20 mm and less than or equal to 35 mm, the air outlet volume of the air outlet device can be increased, the air outlet speed can reach 7 m / s, and at the same time, the air supply distance can reach more than 2 m, the air supply range is also increased, and the air supply effect and the use experience of the whole air outlet device are improved.

[0123] See Figures 19 to 22 , Figure 19 , which is the simulated cloud diagram of the air outlet airflow of the air outlet device of this application when α = 30°; Figure 20 , which is the simulated cloud diagram of the air outlet airflow of the air outlet device of this application when α = 35°; Figure 21 , which is the simulated cloud diagram of the air outlet airflow of the air outlet device of this application when α = 40°; Figure 22 , which is the simulated cloud diagram of the air outlet airflow of the air outlet device of this application when α = 45°. Figures 19 to 22 The remaining structures and related parameters of the air outlet device in

[0124] From Figures 19 to 22 , it can be clearly seen that when the inclination angle α of the air outlet channel formed between two adjacent circumferential rib blocks 132 relative to the axis of the annular air outlet 120 is equal to 30°, the air outlet wind field generated by the air outlet device is better, the wind feeling is strong, and the outlet air speed, air supply distance and air supply range are all considerable.

[0125] As the inclination angle α of the air outlet channel formed between two adjacent circumferential rib blocks 132 relative to the axis of the annular air outlet 120 gradually increases, the outlet air speed, air supply distance and air supply range of the air outlet device gradually weaken.

[0126] When the inclination angle α of the air outlet channel formed between two adjacent circumferential rib blocks 132 relative to the axis of the annular air outlet 120 is within the range of 30° to 40°, the air outlet wind field generated by the air outlet device is acceptable, and the outlet air speed, air supply distance and air supply range can all meet the user's usage requirements.

[0127] When the inclination angle α of the air outlet channel formed between two adjacent circumferential rib blocks 132 relative to the axis of the annular air outlet 120 is greater than or equal to 45°, the air outlet wind field generated by the air outlet device is very weak, the wind feeling basically disappears, and the outlet air speed, air supply distance and air supply range cannot meet the user's usage requirements.

[0128] Thus, it can be concluded that when the inclination angle α of the air outlet channel formed between two adjacent circumferential rib blocks 132 relative to the axis of the annular air outlet 120 satisfies 30° ≤ α < 45°, the outlet air speed, outlet air volume and outlet distance of the air outlet device can meet the normal air supply requirements and meet the user's usage requirements.

[0129] In some embodiments of this application, see Figure 1 and Figure 4 , a plurality of ventilation openings 110 are circumferentially and spacedly distributed on the side wall of the housing 100, a ventilation cavity 140 is formed between the housing 100 and the air duct housing 300, and the ventilation cavity 140 is communicated with the first air inlet hole 310.

[0130] Specifically, the air duct housing 300 has an annular cover structure. The outer wall of the air duct housing 300 forms an annular arc surface. Along the axial direction of the air duct housing 300 and in the direction close to the first air inlet hole 310, the diameter of the air duct housing 300 gradually decreases, so that the ventilation cavity 140 forms an arc-shaped cavity, accelerating the flow rate of the air flow along the ventilation cavity 140 towards the first air inlet hole 310 and improving the air outlet efficiency of the air outlet device.

[0131] It should be noted that when the outer wall of the air duct housing 300 forms an annular arc surface and along the axial direction of the air duct housing 300 and in the direction close to the first air inlet hole 310, the diameter of the air duct housing 300 gradually decreases, the outer diameter D of the annular air duct cavity 320 refers to the maximum outer diameter at the bottom end of the air duct housing 300.

[0132] It can be understood that when the wind wheel 200 rotates, the air flow is introduced into the ventilation cavity 140 from the ventilation openings 110 at various positions on the side wall of the housing 100, and flows into the first air inlet hole 310 along the arc-shaped trajectory of the ventilation cavity 140. Then, it enters the annular acceleration cavity 210 formed by the wind wheel 200 from the first air inlet hole 310 to be pressurized and accelerated, and then flows into the annular air duct cavity 320. Finally, the air flow in the annular air duct cavity 320 is thrown out from the annular air outlet 120 under the rotation of the wind wheel 200, achieving the effect of quickly sending air outwards.

[0133] It is not difficult to understand that by opening a plurality of ventilation openings 110 on the circumferential side wall of the housing 100, when the wind wheel 200 rotates, the external air flow can flow into the first air inlet hole 310 along the radial direction of the housing 100, and then enter the annular acceleration cavity 210 formed by the wind wheel 200 along the axis from the first air inlet hole 310 to achieve air intake, and finally flow out from the annular air outlet 120, achieving the effect of axial air intake and radial air outlet of the air outlet device, so that the air flow is ejected from the annular air outlet 120 from top to bottom in a large air volume state, thereby increasing the air outlet volume, air outlet speed and air supply distance.

[0134] Further, referring to Figure 1 and Figure 2 , the air outlet device further includes a filter net 400, and the filter net 400 is connected to the housing 100 and covers all the ventilation openings 110.

[0135] Specifically, referring to Figure 2 , the housing 100 includes a top cover 150, a support skeleton 160 and a base 170. The support skeleton 160 is connected between the top cover 150 and the base 170, and the three form an annular housing. The circumferential wall of the support skeleton 160 forms a plurality of ventilation openings 110, and the filter net 400 is connected to the circumferential wall of the support skeleton 160 in an annular shape to cover all the ventilation openings 110.

[0136] By providing a filter screen 400 covering all the ventilation openings 110 on the housing 100, the filter screen 400 can filter and remove dust from the air flow entering the ventilation openings 110, improve the cleanliness of the air flow entering the annular acceleration chamber 210 and the air flow flowing out from the annular air outlet 120, and prevent the wind wheel 200 from being unusable due to excessive dust accumulation. At the same time, the user experience is also improved to a certain extent.

[0137] In addition, referring to Figure 1 and Figure 2 , the embodiment of the present application further provides a fan light, which includes a lamp 500 and the air outlet device of any of the above embodiments.

[0138] Among them, the lamp 500 is installed at the bottom of the housing 100 and coaxially distributed with the wind wheel 200, and the vertical projection of the wind wheel 200 is within the vertical projection of the lamp 500 or coincides with the vertical projection of the lamp 500.

[0139] Specifically, the lamp 500 is a decorative lamp, which is used in combination with the air outlet device to enable the fan light to realize the functions of both blowing air and providing lighting. At the same time, the lamp 500 is installed at the bottom of the housing 100 and coaxially distributed with the wind wheel 200, making the overall fan light more aesthetically pleasing.

[0140] It is not difficult to understand that the fan light of the embodiment of the present application not only combines the functions of blowing air and lighting, but also has better air output volume, air output speed and air supply distance, improving the overall performance of the fan light.

[0141] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0142] The above embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. An air outlet device, characterized in that, Comprising: A housing with a plurality of ventilation openings provided on its outer wall; An impeller rotatably provided within the housing, the impeller forming an annular acceleration chamber for accelerating the flow of air; A duct housing provided within the housing and forming an annular duct chamber around the circumference of the impeller, the annular duct chamber communicating with the annular acceleration chamber, and the duct housing being provided with a first air inlet hole communicating with the ventilation opening, the first air inlet hole communicating coaxially with the annular acceleration chamber; The housing forms an annular air outlet at the bottom of the annular duct chamber, the annular air outlet communicating with the annular duct chamber; Wherein, the outer diameter d1 of the first air inlet hole, the outer diameter d2 of the impeller, and the outer diameter D of the annular duct chamber satisfy the following relationship: 0.7 ≤ (d1 / d2) ≤ 0.75, 1.3 ≤ (D / d2) ≤ 1.

4.

2. The air outlet device according to claim 1, wherein A second air inlet hole is provided on one side of the impeller close to the first air inlet hole, the first air inlet hole, the second air inlet hole, and the annular acceleration chamber are coaxially connected in sequence, and the outer diameter of the first air inlet hole is less than or equal to the outer diameter of the second air inlet hole.

3. The air outlet device according to claim 2, characterized in that, The second air inlet hole and the first air inlet hole are axially spaced along the axis of the impeller, and the axial distance d4 between the second air inlet hole and the first air inlet hole satisfies: 3 mm < d4 < 8 mm.

4. The air outlet device according to claim 1, characterized in that, An annular grille is formed on the housing, and opposite ends of the annular grille are respectively connected to opposite ends of the annular air outlet to cover the annular air outlet, and the annular grille divides the annular air outlet into a plurality of sub-air outlets.

5. The air outlet device according to claim 4, characterized in that, The annular grille includes a plurality of radial rib blocks spaced circumferentially along the annular air outlet, and the included angle formed by adjacent two of the radial rib blocks is equal.

6. The air outlet device according to claim 5, characterized in that The number of the radial rib blocks is n1, the included angle β formed by adjacent two of the radial rib blocks is β, and n1 and β satisfy: β = 360 / n1, 12 < n1 ≤ 24.

7. The air outlet device according to any one of claims 4 to 6, characterized in that, The annular grille further includes a plurality of circumferential rib blocks spaced radially along the annular air outlet, the circumferential rib blocks are annular, and the distance between adjacent two of the circumferential rib blocks is equal.

8. The air outlet device according to claim 7, characterized in that, The number of the circumferential rib blocks is n2, the distance a1 between adjacent two of the circumferential rib blocks is a1, and n2, a1, D, and d2 satisfy: a1 = (D - d2) / (2*n2), 4 ≤ n2 < 7.

9. The air outlet device according to claim 7, characterized in that The outer diameter of the circumferential rib block gradually increases along the axis of the circumferential rib block and in the direction away from the annular air outlet.

10. The air outlet device according to claim 9, wherein The angle α between the connection line between the end of the circumferential rib block close to the annular air outlet and the end of the circumferential rib block away from the annular air outlet and the axis of the annular air outlet satisfies: 30° ≤ α < 45°; And the length L of the connection line between the end of the circumferential rib block close to the annular air outlet and the end of the circumferential rib block away from the annular air outlet satisfies: 20 mm ≤ L ≤ 35 mm.

11. The air outlet device according to claim 1, characterized in that, A plurality of the ventilation openings are circumferentially spaced on the side wall of the housing, a ventilation chamber is formed between the housing and the duct housing, and the ventilation chamber communicates with the first air inlet hole.

12. The air outlet device according to claim 11, characterized in that, The air outlet device further includes a filter screen, and the filter screen is connected to the housing and covers all the ventilation openings.

13. A fan light, characterized in that, Comprising: The air outlet device according to any one of claims 1 to 12; A lamp, installed at the bottom of the housing and coaxially distributed with the wind wheel, and the vertical projection of the wind wheel is within the vertical projection of the lamp or coincides with the vertical projection of the lamp.

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