Ceiling fan and fan light

Abstract

The present disclosure provides a ceiling fan and a fan lamp, belonging to the technical field of household appliances. The fan comprises a housing, a fan assembly and a plurality of shielding tongues. The plurality of shielding tongues surround the fan assembly and divide an annular opening at the bottom of the housing into a plurality of air outlets. The shielding tongue has a first air guide surface and a second air guide surface, and the first air guide surface faces the fan assembly. And in a reference plane perpendicular to the central axis of the annular opening, the first air guide surface has a first reference line connecting the first end of the first air guide surface and the central axis, and the second air guide surface is retracted relative to the first reference line. In this way, the angle occupied by the first air guide surface is greater than the angle occupied by the shielding part of the shielding tongue, so that the shielding tongue has a long enough first air guide surface, and the length of the shielding part of the shielding tongue is relatively short. Therefore, the wind blown by the plurality of air outlets is more continuous in the circumferential direction, achieving the effect of long air supply distance and uniform annular air outlet of the ceiling fan.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of household appliances, in particular to a ceiling fan with long air supply distance and uniform annular air outlet. BACKGROUND

[0002] Ceiling fans are commonly used household appliances. Ceiling fans have a housing and a fan assembly, the fan assembly is located inside the housing, and the fan assembly sucks air from the air inlet of the housing and sends air to the outside through the annular opening at the bottom of the housing.

[0003] In related technologies, in order to increase the air supply distance of the above-mentioned type of ceiling fan, a plurality of shielding tongues are arranged inside the housing, the shielding tongues shield a plurality of parts of the annular opening and separate the annular opening into a plurality of air outlets. In this way, under the premise that the air volume does not change, the wind power at each air outlet is larger, and the air supply range of the fan is improved.

[0004] However, on the one hand, in order to achieve good air guiding effect, the length of the air guiding surface of the shielding tongue cannot be too short. On the other hand, in order to enable the plurality of air outlets to still achieve the air outlet effect of annular air outlet, the length of the part shielded by the shielding tongue cannot be too large, otherwise, the wind blown out from each air outlet cannot be continuous in the circumferential direction, causing the annular air outlet of the fan to be uneven. SUMMARY

[0005] The present disclosure provides a ceiling fan with long air supply distance and uniform annular air outlet, which can solve the technical problems existing in related technologies. The technical scheme of the ceiling fan and fan lamp is as follows:

[0006] In a first aspect, the present disclosure provides a ceiling fan with long air supply distance and uniform annular air outlet, the ceiling fan comprising a housing, a fan assembly and a plurality of shielding tongues;

[0007] The housing has an air inlet and an annular opening at the bottom;

[0008] The fan assembly is located inside the housing, the plurality of shielding tongues surround the fan assembly, and the annular opening is separated into a plurality of air outlets;

[0009] The shielding tongue has a first air guiding surface and a second air guiding surface, the first air guiding surface faces the fan assembly, the leading end of the first air guiding surface is connected to the leading end of the second air guiding surface, and the second air guiding surface of one shielding tongue and the first air guiding surface of the adjacent shielding tongue have the air outlet therebetween;

[0010] In the reference plane perpendicular to the central axis of the annular opening, a line connecting the leading end of the first air guide surface or the leading end of the second air guide surface and the central axis of the annular opening is the first reference line, a line connecting the trailing end of the first air guide surface and the central axis of the annular opening is the second reference line, and a line connecting the trailing end of the second air guide surface and the central axis of the annular opening is the third reference line, wherein the third reference line is located between the first reference line and the second reference line.

[0011] The second air guide surface is arc-shaped, and the concave surface of the second air guide surface faces the first air guide surface of the shielding tongue closest to the second air guide surface.

[0012] In a possible implementation, an angle between the second reference line and the third reference line is α, and 20°<α<30°.

[0013] In a possible implementation, in the reference plane, an angle between the first reference line and the third reference line is γ, and 0°<γ<15°.

[0014] In a possible implementation, in the reference plane, an angle between the first air guide surface and the second air guide surface at the connection position is δ, and δ is an acute angle.

[0015] In a possible implementation, 9°<δ<38°.

[0016] In a possible implementation, an angle between a tangent line of the leading end of the first air guide surface and the first reference line is φ, and φ>145°.

[0017] In a possible implementation, the second air guide surface is arc-shaped, and the concave surface of the second air guide surface faces the first air guide surface of the shielding tongue closest to the second air guide surface.

[0018] In a possible implementation, in the reference plane, an angle between a tangent line of the trailing end of the second air guide surface and a line connecting the second air guide surface and the central axis of the annular opening is ε, and 0°<ε<20°.

[0019] In a possible implementation, in the reference plane, an angle between a tangent line of the trailing end of the second sub-air guide surface and a line connecting the trailing end of the second sub-air guide surface and the central axis of the annular opening is ω, and 0°<ω<20°.

[0020] In a possible implementation, the shell includes an outer shell and an inner shell, and the outer shell is sleeved on the inner shell.

[0021] The shell has an air inlet, and the annular opening is formed between the bottom of the shell and the bottom of the inner shell.

[0022] The shielding tongue is connected to the inner wall of the shell.

[0023] In a possible implementation, the shell and the shielding tongue are integrally formed, the shell wall of the shell is concave to form the shielding tongue, and the outer wall of the shell has a recess corresponding to the part of the shielding tongue.

[0024] In a possible implementation, the first sub-air guide surface is tangent to the second sub-air guide surface.

[0025] In a second aspect, the disclosure provides a fan lamp, comprising a ceiling fan and a lamp module as any one of the first aspect.

[0026] The lamp module is connected to the inner shell of the ceiling fan.

[0027] The technical solutions provided by the disclosure have at least the following beneficial effects:

[0028] The shielding tongue of the ceiling fan provided by the disclosure has a first air guide surface and a second air guide surface, the first air guide surface faces the fan assembly, the leading end of the first air guide surface is connected to the leading end of the second air guide surface, and the second air guide surface of one shielding tongue and the first air guide surface of an adjacent shielding tongue have an air outlet. In a reference plane perpendicular to the central axis of the annular opening, the line between the leading end of the first air guide surface or the leading end of the second air guide surface and the central axis of the annular opening is the first reference line, the line between the trailing end of the first air guide surface and the central axis of the annular opening is the second reference line, and the line between the trailing end of the second air guide surface and the central axis of the annular opening is the third reference line. The third reference line is located between the first reference line and the second reference line.

[0029] The angle occupied by the first air guide surface is the angle between the first reference line and the second reference line, and the angle occupied by the part shielded by the shielding tongue is the angle between the third reference line and the second reference line. Since the third reference line is located between the first reference line and the second reference line, the angle occupied by the first air guide surface is greater than the angle occupied by the part shielded by the shielding tongue. In this way, the shielding tongue not only has a first air guide surface with sufficient length, but also has a part with a relatively short length, so that the ceiling fan not only has a long air supply distance, but also the air blown out of each air outlet can be continuous in the circumferential direction, and the annular air outlet of the ceiling fan is more uniform.

[0030] In addition, since the second air guide surface is arc-shaped and the concave surface faces the first air guide surface of the shielding tongue closest to the second air guide surface, the second air guide surface can deflect the flow direction of the air towards the radial direction of the ceiling fan, which is conducive to the air blowing to a farther distance. The farther the distance to which the air blows, the more easily the air blown by each air outlet is continuous in the circumferential direction, thereby further improving the effect of uniform air blowing of the ceiling fan in the annular direction.

[0031] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0032] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure. In the drawings:

[0033] Figure 1 is an exploded view of a ceiling fan according to an embodiment of the present disclosure;

[0034] Figure 2 is a structural schematic view of a ceiling fan according to an embodiment of the present disclosure;

[0035] Figure 3 is a bottom view of a ceiling fan according to an embodiment of the present disclosure;

[0036] Figure 4 is a structural schematic view of a ceiling fan according to an embodiment of the present disclosure;

[0037] Figure 5 is a sectional view of a ceiling fan according to an embodiment of the present disclosure;

[0038] Figure 6 is a schematic view of the central angle of a shielding tongue and the air feeling radius according to an embodiment of the present disclosure;

[0039] Figure 7 is a schematic view of the air direction of a ceiling fan according to an embodiment of the present disclosure;

[0040] Figure 8 is a schematic view of the air direction of a ceiling fan according to an embodiment of the present disclosure;

[0041] Figure 9 is a structural schematic view of a ceiling fan according to an embodiment of the present disclosure.

[0042] LEGEND

[0043] 1, housing, 11, air inlet, 12, annular opening, 120, air outlet;

[0044] 2, fan assembly, 20, partition plate, 21, motor, 22, impeller, 220, balance hole;

[0045] 3, shielding tongue, 31, first air guide surface, 311, first sub air guide surface, 312, second sub air guide surface, 32, second air guide surface;

[0046] 4, lamp module;

[0047] a, first reference line;

[0048] b, second reference line;

[0049] c, third reference line;

[0050] d, fourth reference line.

[0051] The specific embodiments of the present disclosure have been shown in the above drawings, and will be described in more detail hereinafter. These drawings and the written description are not intended to restrict the scope of the present disclosure concept in any way, but to illustrate the present disclosure concept to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical scheme and advantages of the present disclosure clearer, the embodiments of the present disclosure will be described in further detail below with reference to the drawings.

[0053] The terms used in the embodiments of the present disclosure are only used to explain the embodiments of the present disclosure, and are not intended to limit the present disclosure. Unless otherwise defined, the technical terms or scientific terms used herein should be understood as the general meaning understood by those skilled in the art to which the present disclosure belongs. The terms "first", "second", "third" and the like used in the specification and claims of the present patent application do not represent any order, number or importance, but are only used to distinguish different components. Similarly, "one" or "a" and the like do not represent a quantity limitation, but represent the existence of at least one. The terms "include" or "contain" and the like mean that the elements or objects appearing before "include" or "contain" cover the elements or objects listed after "include" or "contain" and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and the like are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationships, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0054] The embodiments of the present disclosure provide a ceiling fan with long air supply distance and uniform annular air outlet, like Figures 1-4As shown, the ceiling fan includes a housing 1, a fan assembly 2, and multiple shielding tongues 3. The housing 1 has an air inlet 11 and an annular opening 12 at the bottom. The fan assembly 2 is located inside the housing 1, and the multiple shielding tongues 3 surround the fan assembly 2, dividing the annular opening 12 into multiple air outlets 120. Each shielding tongue 3 has a first air guiding surface 31 and a second air guiding surface 32. The first air guiding surface 31 faces the fan assembly 2, and the first end of the first air guiding surface 31 is connected to the first end of the second air guiding surface 32. An air outlet 120 is formed between the second air guiding surface 32 of one shielding tongue 3 and the first air guiding surface 31 of an adjacent shielding tongue 3.

[0055] Among them, such as Figure 4 As shown, in a reference plane perpendicular to the central axis of the annular opening 12, let the line connecting the first end of the first air guide surface 31 or the first end of the second air guide surface 32 with the central axis of the annular opening 12 be the first reference line a, and the line connecting the end of the first air guide surface 31 with the central axis of the annular opening 12 be the second reference line b. Then the third reference line c is located between the first reference line a and the second reference line b.

[0056] Among them, the axis of the annular opening 12, the axis of the fan assembly 2, and the axis of the entire ceiling fan are collinear.

[0057] like Figure 5 As shown, the fan assembly 2 includes a motor 21 and an impeller 22. The motor 21 is fixed between the outer shell 101 and the inner shell 102. The impeller 22 is connected to the motor 21 in a transmission manner. The impeller 22 is opposite to the air inlet 11. The fan assembly 2 can be a centrifugal fan or a mixed-flow fan.

[0058] In the ceiling fan provided in this embodiment, the angle occupied by the first air guiding surface 31 of the shielding tongue 3 is the angle between the first reference line a and the second reference line b, and the angle occupied by the shielded part of the shielding tongue 3 is the angle between the third reference line c and the second reference line b. Since the third reference line c is located between the first reference line a and the second reference line b, the angle occupied by the first air guiding surface 31 is greater than the angle occupied by the shielded part of the shielding tongue 3.

[0059] This design achieves both a sufficiently long first air guide surface 31 for the shielding tongue 3 and a shorter shielded portion, resulting in a longer air delivery distance for the ceiling fan and continuous circumferential airflow from each outlet, leading to more uniform annular airflow. Furthermore, this design also allows for a longer second air guide surface 32, which also provides excellent airflow guidance.

[0060] In some examples, let α be the angle between the second reference line b and the third reference line c, then 20° < α < 30°.

[0061] like Figure 6As shown, the horizontal coordinate represents α in °, and the vertical coordinate represents the wind feeling radius, i.e., the blowing radius that a user can feel when using the ceiling fan provided by the embodiment of the present disclosure, in m.

[0062] As can be seen from Figure 6 , as α increases, the wind feeling radius also gradually increases. Since the wind feeling radius is small when 0° < α < 20°, α can be set to be greater than 20°. When α is greater than 30°, although the wind feeling radius is still increasing, it will cause the shielding tongue 3 to shield too much of the annular opening 12, so that the air outlet 120 is too small, thereby causing the ceiling fan to blow air unevenly. Therefore, in some examples, 20° < α < 30°.

[0063] In some examples, as shown in Figure 4 , assuming that the number of shielding tongues 3 is z, then 130° / α < z < 150° / α. That is, the angle occupied by the part shielded by the plurality of shielding tongues 3 is at least 130° and at most 150°.

[0064] Through experiments, it is found that if z < 130° / α, i.e., zα < 130°, then the angle occupied by the part shielded by the plurality of shielding tongues 3 is too small, which will cause the air outlet area of each air outlet 120 to be large, thereby making it difficult for the air outlet 120 to increase the air pressure and air flow. At the same time, it will also make the lengths of the first air guide surface 31 and the second air guide surface 32 short, so that the air pressure path of the air flow in the first air guide surface 31 and the second air guide surface 32 is small, which is not conducive to increasing the air pressure at the air outlet 120.

[0065] If z > 150° / α, i.e., zα > 150°, then the part shielded by the plurality of shielding tongues 3 occupies too much of an angle, which will cause the air outlet 120 to be too small. Although it will make the air pressure at the air outlet 120 large, since no air is blown at the shielding tongue 3, it will make the air blown by the plurality of air outlets 120 discontinuous in the circumferential direction, thereby making the annular air supply of the ceiling fan uneven.

[0066] In some examples, as shown in Figure 4 , 4 ≤ z ≤ 6. For example, z = 6.

[0067] In some examples, as shown in Figure 4 , in the reference plane, the angle between the first reference line a and the third reference line c is γ, and 0° < γ < 15°.

[0068] If γ is too large, it will make the angle between the first air guide surface 31 and the second air guide surface 32 too small, which will make it difficult to process the shielding tongue 3. If γ is too small, it will not be able to achieve the above-mentioned effect of making the annular air outlet more uniform.

[0069] The above technical solution enables the air blown from each air outlet 120 to be continuous in the circumferential direction, achieving a relatively uniform annular airflow from the ceiling fan. In addition, the uniformity of the air blown from each air outlet 120 also affects the uniformity of the annular airflow.

[0070] The following is an example of how to improve the uniformity of airflow from each air outlet 120.

[0071] In some examples, such as Figure 4 As shown, in the reference plane, let the angle between the connection between the first air guide surface 31 and the second air guide surface 32 be δ, and let δ be an acute angle.

[0072] like Figure 7 As shown, setting δ to an acute angle allows part of the air blown by the fan assembly 2 towards the shield tongue 3 to be blown along the first air guide surface 31 towards the portion of the outlet 120 near the first air guide surface 31, and the other part to be blown along the second air guide surface 32 towards the portion of another outlet 120 near the second air guide surface 31. Thus, for each outlet 120, both the portions near the first air guide surface 31 and the portions near the second air guide surface 32 have a larger air volume, resulting in more uniform airflow from the outlet 120. Alternatively, it can be described that since there is an outlet 120 between the second air guide surface 32 of one shield tongue 3 and the first air guide surface 31 of an adjacent shield tongue 3, part of the airflow within each outlet 120 originates from the first air guide surface 31 of one shield tongue 3, and the other part originates from the second air guide surface 32 of another shield tongue 3. Therefore, the airflow from the outlet 120 is more uniform.

[0073] like Figure 8 As shown, when δ is an obtuse angle, on the one hand, without changing the air guiding length of the first air guiding surface 31 and the second air guiding surface 32, the obtuse angle of δ will cause the angle occupied by the shielding tongue 3 to be greater than the angle occupied by the first air guiding surface 31, resulting in a longer length of the shielding tongue 3, which makes the annular air outlet of the ceiling fan uneven.

[0074] On the other hand, it will also cause a large impact between the air outlet of the fan assembly 2 and the second air guide surface 32, resulting in a large airflow impact loss. Since there is an air outlet 120 between the first air guide surface 31 of the shield tongue 3 and the second air guide surface 32 of the adjacent shield tongue, if δ is too large, the airflow near the first air guide surface 31 of the air outlet 120 will be more and stronger, while the airflow near the second air guide surface 32 of the air outlet 120 will be less and weaker, resulting in uneven airflow at the air outlet 120.

[0075] In some examples, such as Figure 4As shown, 9° < δ < 38°. Wherein, if δ is too small, the connecting part of the first air guide surface 31 and the second air guide surface 32 cannot generate an effective fillet radius, which makes it difficult to process the shielding tongue 3, and increases the complexity and cost of processing the ceiling fan.

[0076] In some examples, as shown in Figure 9 As shown, the angle between the tangent of the first end of the first air guide surface 31 and the first reference line a is φ, and φ > 145°. In this way, the angle between the air blown by the fan assembly 2 and the first air guide surface 31 can be reduced, thereby reducing the impact of the first air guide surface 31 on the airflow, and further reducing the airflow loss. Thus, the wind force near the first air guide surface 31 of the air outlet 120 is close to the wind force near the second air guide surface 32, so that the air blown by the air outlet 120 is more uniform.

[0077] In some examples, as shown in Figure 7 and Figure 9 As shown, the second air guide surface 32 is arc-shaped, and the concave surface of the second air guide surface 32 faces the first air guide surface 31 of the shielding tongue 3 closest to the second air guide surface 32. In the reference plane, along the rotation direction of the fan assembly 2, the angle between the tangent of the second air guide surface 32 and the radial direction of the annular opening 12 gradually decreases.

[0078] On the one hand, compared with the straight shape of the second air guide surface 32, setting the second air guide surface 32 as arc-shaped can increase the length of the second air guide surface 32, thereby increasing the pressure path of the airflow, thereby facilitating the increase of the wind pressure. Since the length of the first air guide surface 31 is relatively long, increasing the length of the second air guide surface 32 can reduce the pressure difference between the end of the first air guide surface 31 and the end of the second air guide surface 32, thereby making the air blown by the air outlet 120 more uniform. At the same time, the shielding tongue 3 can also occupy a larger central angle without reducing the air guide length of the first air guide surface 31, that is, the air outlet 120 occupies a larger central angle. In this way, the air blown by the annular opening 12 has continuity, that is, the air blown by the annular opening 12 is relatively uniform.

[0079] On the other hand, the second air guide surface 32 can deflect the flow direction of the air towards the radial direction of the fan assembly 2, so that the airflow has a larger radial component after flowing out of the air outlet 120, which is conducive to blowing the airflow to a farther distance.

[0080] In some examples, as shown in Figure 9As shown, in the reference plane, let the angle between the tangent at the end of the second air guide surface 32 and the line connecting the second air guide surface 32 and the central axis of the annular opening 12 be ε, then 0° < ε < 20°. This allows the angle between the wind direction at the end of the second air guide surface 32 and the radial direction of the annular opening 12 to be smaller, enabling the second air guide surface 32 to radially polarize the airflow direction towards the ceiling fan, which is beneficial for increasing the radial air delivery distance of the ceiling fan.

[0081] In some examples, such as Figure 9 As shown, let r1 be the distance from the first end of the first air guide surface 31 to the central axis of the annular opening 12, and let R be the radius of the fan assembly 2, with r1 / R ≥ 1.05. This ensures that the first end of the first air guide surface 31 has sufficient air guiding space, which is beneficial for guiding the airflow to the air outlet 120.

[0082] If r1 is too small, the gap between the first end of the first air guide surface 31 and the edge of the impeller 22 will be small, which will result in a small air guide space at the first end of the first air guide surface 31. This will make it difficult for the air blown out by the fan assembly 2 to pass through the shield tongue 3, making the airflow prone to backflow.

[0083] In some examples, such as Figure 9 As shown, along the rotation direction of the fan assembly 2, the first air guide surface 31 sequentially includes a first sub-air guide surface 311 and a second sub-air guide surface 312. The second sub-air guide surface 312 is arc-shaped, and the convex surface of the second sub-air guide surface 312 faces the fan assembly 2.

[0084] On the one hand, the second sub-guide surface 312 can deflect the airflow radially towards the fan assembly 2. This results in a larger radial component in the airflow after it reaches the outlet 120, which is beneficial for the airflow to travel a greater distance. Furthermore, since the concave surface of the second guide surface 32 faces the first guide surface of the other shielding tongue 3, the angle between the second guide surface 32 and the second sub-guide surface 312 of the other shielding tongue 3 is small. Thus, the angle between the airflow near the second sub-guide surface 312 and the airflow near the second guide surface 32 at the outlet 120 is small, resulting in a more uniform airflow direction at all points of the outlet 120, thereby improving the uniformity of the airflow from the outlet 120.

[0085] On the other hand, the radial deflection of the second sub-guide surface 312 toward the fan assembly 2 can reduce the central angle occupied by the shield tongue 3 without reducing the guide length of the first guide surface 31, thus resulting in a larger central angle occupied by the air outlet 120. In this way, the air blown out of the annular opening 12 can be continuous, that is, the air outlet of the annular opening 12 is more uniform.

[0086] In some examples, such as Figure 9As shown, in the reference plane, a tangent line of the end of the second sub-guide vane 312 is drawn, and the included angle between the tangent line and the line connecting the end of the second sub-guide vane 312 and the central axis of the annular opening 12 is ω, then 0°<ω<20°. In this way, the included angle between the wind direction of the end of the second sub-guide vane 312 and the radial direction of the annular opening 12 is small, which is beneficial to increasing the air supply distance in the radial direction of the ceiling fan. Meanwhile, the wind direction of the end of the second sub-guide vane 312 is close to the wind direction of the end of the second guide vane 32, so that the air outlet 120 can blow air more uniformly.

[0087] In some examples, as shown in Figure 9 The first sub-guide vane 311 is tangent to the second sub-guide vane 312 at the connection, so that the air flow can smoothly flow from the first sub-guide vane 411 to the second sub-guide vane 312, thereby reducing air flow loss.

[0088] In some examples, the concave surface of the first sub-guide vane 311 faces the fan assembly 2, which is beneficial to gathering air flow and guiding the air flow to the second sub-guide vane 312.

[0089] In some examples, as shown in Figure 9 The distance between the end of the first sub-guide vane 311 and the axis of the fan assembly 2 is r2, and 1.015

[0090] In some examples, as shown in Figure 4 and Figure 9 In the reference plane, the line connecting the end of the first sub-guide vane 311 and the central axis of the annular opening 12 is the fourth reference line d, and the included angle between the second reference line b and the fourth reference line d is β, and β<α.

[0091] If β>α, the length of the first sub-guide vane 311 will increase, so that the impact between the air flow and the first sub-guide vane 311 is larger, so that the resistance of the air blown by the fan assembly 2 is larger, thereby increasing the load of the fan assembly 2.

[0092] In some examples, as shown in Figure 5 The shell 1 includes an outer shell 101 and an inner shell 102, and the outer shell 101 is sleeved on the inner shell 102. The top of the outer shell 101 has an air inlet 11, and the bottom of the outer shell 101 and the bottom of the inner shell 102 form an annular opening 12. The shielding tongue 3 is connected to the inner wall of the outer shell 101.

[0093] In some examples, the air inlet 11 can also be located on the side of the outer shell 101, or on the bottom of the inner shell 102.

[0094] In some examples, as shown inFigure 4 As shown, the top of the shielding tongue 3 abuts against the outer shell 101, and / or the bottom of the shielding tongue 3 abuts against the inner shell 102, and along the air outlet direction, the air outlet distance of the fan assembly 2 is gradually increased. Figure 4 As shown, the size of the shielding tongue 3 in the vertical direction gradually decreases. Therefore, the distance between the part of the outer shell 101 and the inner shell 102 abutting against the shielding tongue 3 is also gradually decreased. Since the total air outlet volume of the fan assembly 2 is unchanged, and the distance between the outer shell 101 and the inner shell 102 is gradually decreased along the air flow direction, the air pressure of the air flow is gradually increased, thereby increasing the air supply distance of the fan.

[0095] In some examples, as shown in Figure 4 As shown, the outer shell 101 includes a first arc-shaped part 1011, and the inner shell 102 includes a second arc-shaped part 1021. The concave surface of the first arc-shaped part 1011 faces the convex surface of the second arc-shaped part 1021, and the plurality of shielding tongues 3 are located between the first arc-shaped part 1011 and the second arc-shaped part 1021. In this way, the air flow blown by the fan assembly 2 can flow along the arc-shaped direction, so that the air flow is more smooth, and the air flow loss caused by the sudden change of the air flow direction is avoided.

[0096] In some examples, as shown in Figure 4 and Figure 5 As shown, the top and the bottom of the shielding tongue 3 are both arc-shaped, and respectively fit the first arc-shaped part 1011 and the second arc-shaped part 1021. The angle between the top of the shielding tongue 3 and / or the bottom of the shielding tongue 3 and the horizontal plane gradually increases along the air outlet direction. Since the air flow blown by the fan assembly 2 is along the horizontal direction, and the ceiling fan needs to blow air downward, the angle between the bottom of the shielding tongue 3 and the horizontal plane gradually increases along the air outlet direction, so that the air flow is gradually guided to be close to the vertical direction.

[0097] In some examples, as shown in Figure 4 As shown, the maximum size of the shielding tongue 3 in the vertical direction is d1, and the minimum size is d2, and 2.5 < d1 / d2 < 7. Further, 4 < b2 / b1 < 6.

[0098] Since the diameter of the outer shell 101 and the diameter of the inner shell 102 are greater than the diameter of the fan assembly 2, if b2 / b1 is too small, the ventilation area of the annular opening 12 (the ventilation area between the end of the first arc-shaped part 1011 and the end of the second arc-shaped part 1021) may be greater than the ventilation area of the edge of the fan assembly 2, so that the flow rate of the air flow in the air duct is gradually decreased, and vortexes are easily generated in the air duct, thereby shortening the air supply distance of the annular opening 12.

[0099] If b2 / b1 is too large, although the ventilation area of the annular opening 12 is smaller than the ventilation area of the edge of the fan assembly 2, the ventilation area of the annular opening 12 will hinder the airflow, and the air volume at the annular opening 12 will be too small, which is not conducive to increasing the air supply distance.

[0100] In some examples, as shown in Figure 2 The shielding tongue 3 and the outer shell 101 are in an integrated structure, the outer shell 101 is integrally formed with the shielding tongue 3, the shell wall of the outer shell 101 is concave to form the shielding tongue 3, and the outer wall of the outer shell 101 has a recess 1011 corresponding to the shielding tongue 3. In this way, the connection strength of the shielding tongue 3 and the outer shell 101 can be enhanced, and the processing difficulty of the shielding tongue 3 and the outer shell 101 can be reduced.

[0101] Of course, in other examples, the shielding tongue 3 can also be in an integrated structure with the inner shell 102. Alternatively, the shielding tongue 3 is connected to the outer shell 101 and the inner shell 102 through a connecting component as a separate part.

[0102] In some examples, the inner shell 102 is connected to the bottom of the shielding tongue 3, so as to realize the connection of the inner shell 102 and the outer shell 101. Since the airflow generated by the fan assembly 2 does not flow out from the position opposite to the annular opening 12 of the shielding tongue 3, the connecting component (such as a bolt and a screw, etc.) is arranged at the bottom of the shielding tongue 3, so as not to hinder the airflow.

[0103] In some examples, the outer wall of the outer shell 101 is pasted with sound-absorbing cotton, so as to reduce the noise generated when the airflow flows.

[0104] It should be noted that in some embodiments, the concave surface and the convex surface referred to in the article refer to the general surface trend, and in other embodiments, a local convex surface can be arranged in the concave surface for other effects.

[0105] The embodiments of the present disclosure also provide a fan lamp, which comprises the ceiling fan and the lamp module 4, and the lamp module 4 is arranged at the bottom of the shell 1 of the ceiling fan.

[0106] In some examples, as shown in Figure 1 and Figure 5 The inner shell 102 has a receiving groove. The lamp module 4 can directly arrange the light source in the receiving groove, and at this time, the inner shell 102 can be regarded as a mounting base of the light source. Alternatively, the lamp module 4 is an integral component and is detachably connected to the bottom of the inner shell 102.

[0107] The above description is only optional embodiments of the present disclosure, and does not limit the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A ceiling fan with long blowing distance and uniform circular air outlet, characterized in that, The ceiling fan comprises a housing (1), a fan assembly (2) and a plurality of shielding tongues (3); The housing (1) has an air inlet (11) and a bottom with an annular opening (12); The fan assembly (2) is located inside the housing (1), the plurality of shielding tongues (3) surround the fan assembly (2) and divide the annular opening (12) into a plurality of air outlets (120); The shielding tongue (3) has a first air guide surface (31) and a second air guide surface (32), the first air guide surface (31) faces the fan assembly (2), the first air guide surface (31) is connected to the first end of the second air guide surface (32), and the second air guide surface (32) of one shielding tongue (3) and the first air guide surface (31) of the adjacent shielding tongue (3) have the air outlet (120) therebetween; In a reference plane perpendicular to the central axis of the annular opening (12), the line connecting the first end of the first air guide surface (31) and the central axis of the annular opening (12) is the first reference line (a), the line connecting the end of the first air guide surface (31) and the central axis of the annular opening (12) is the second reference line (b), and the line connecting the end of the second air guide surface (32) and the central axis of the annular opening (12) is the third reference line (c), wherein the third reference line (c) is located between the first reference line (a) and the second reference line (b); In the rotation direction of the fan assembly (2), the first air guide surface (31) comprises a first sub-air guide surface (311) and a second sub-air guide surface (312) in sequence, the second sub-air guide surface (312) is arc-shaped, and the convex surface of the second sub-air guide surface (312) faces the fan assembly (2); The second air guide surface (32) is arc-shaped, and the concave surface of the second air guide surface (32) faces the first air guide surface (31) of the shielding tongue (3) closest to the second air guide surface (32).

2. The ceiling fan of claim 1, wherein, The angle between the second reference line (b) and the third reference line (c) is α, and 20°<α<30°.

3. The ceiling fan of claim 1, wherein, In the reference plane, the angle between the first reference line (a) and the third reference line (c) is γ, and 0°<γ<15°.

4. The ceiling fan of any one of claims 1-3, wherein, In the reference plane, the angle between the first air guide surface (31) and the second air guide surface (32) at the connection is δ, and δ is an acute angle.

5. The ceiling fan of claim 4, wherein, 9°<δ<38°.

6. The ceiling fan of any one of claims 1-3, wherein the housing is configured to be mounted to a ceiling surface. The angle between the tangent of the first end of the first air guide surface (31) and the first reference line (a) is φ, and φ>145°.

7. The ceiling fan of claim 6, wherein, In the reference plane, the angle between the tangent of the end of the second air guide surface (32) and the line connecting the second air guide surface (32) and the central axis of the annular opening (12) is ε, and 0°<ε<20°.

8. The ceiling fan of any one of claims 1-3, wherein, In the reference plane, the angle between the tangent of the end of the second sub-air guide surface (312) and the line connecting the end of the second sub-air guide surface (312) and the central axis of the annular opening (12) is ω, and 0°<ω<20°.

9. The ceiling fan of any one of claims 1-3, wherein, The shell (1) comprises an outer shell (101) and an inner shell (102), the outer shell (101) encloses the inner shell (102); The outer shell (101) has an air inlet (11), and the annular opening (12) is formed between the bottom of the outer shell (101) and the bottom of the inner shell (102); The shielding tongue (3) is connected with the inner wall of the outer shell (101).

10. A fan lamp, comprising the ceiling fan and the lamp module (4) according to any one of claims 1-9; The lamp module (4) is arranged at the bottom of the shell (1) of the ceiling fan.

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