Air duct module and fan

Abstract

The invention discloses an air duct module which comprises a fan, first flow guide parts and second flow guide parts, first flow guide blades are bent, the second flow guide blades are straight, the axial projection of each second flow guide blade intersects with the axial projection of the corresponding first flow guide blade, and the axial projection of each second flow guide blade intersects with the axial projection of the corresponding first flow guide blade. The number of intersection points of each second guide vane on the axial projection is at least two, and when airflow passes through the second guide vanes in the air outlet direction, the airflow is cut at the positions corresponding to the intersection points, so that the air speed of the airflow is increased; the first flow guide blades are bent, the second flow guide blades are straight, and the first flow guide blades and the second flow guide blades are staggered in the axial projection and at least form two intersection points, so that when airflow passes through, the airflow is cut and guided, and when the airflow passes through, a corresponding air channel becomes small; and the components of the first guide vanes and the surface airflow of the first guide vanes in the radial direction can be effectively weakened through mutual staggered arrangement, so that the wind speed is increased.

Description

Technical Field

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

[0002] In daily life, in order to meet the needs of using fans in outdoor activities and other life scenarios, a variety of fans have appeared on the market. However, most fans have a pain point, that is, the wind speed is not high enough and the user experience is not good. If the fan needs to be improved and a high-speed motor is needed, the production cost will increase, especially for portable fans. Because they are generally small in size and have limited internal space, the fan speed is not high, resulting in the wind blowing out. The wind speed is not high, which cannot make people feel cool and affects the user experience. Summary of the invention

[0003] In order to solve the deficiencies in the prior art, an air duct module and a fan are provided.

[0004] The present invention is implemented by the following technical solutions:

[0005] A duct module, comprising: a fan, the fan comprising blades and a hub, a motor installed in the hub, the motor being electrically connected to the fan; a first guide member, the first guide member comprising a first guide blade, an inner ring body, and an outer ring body, a receiving cavity being formed inside the outer ring body, the fan, the inner ring body, and the first guide blade being all located in the receiving cavity, one end of the first guide blade being connected to the outer side of the inner ring body, and the other end being connected to the inner side of the outer ring body; a second guide member, the second guide member comprising a second guide blade, an inner ring body, and an outer ring body, the inner ring body having the same diameter as the inner ring body, and the outer ring body The diameter is the same as that of the outer ring body, one end of the second guide blade is connected to the outer side of the inner ring body, and the other end is connected to the inner side of the outer ring body, and the second guide piece is connected to the end of the first guide piece away from the fan; the first guide blade is curved, and the second guide blade is straight, each of the second guide blades intersects with the corresponding first guide blade in the axial projection on the axial projection, and each of the second guide blades has at least two intersection points in the axial projection, when the airflow passes through the second guide blade along the outlet direction, it is cut at the position corresponding to the intersection, so that the wind speed of the airflow increases.

[0006] The principle of increasing wind speed is divided into two factors. The first factor is that the first guide blades and the second guide blades are arranged in an interlaced manner, which is equivalent to that at the first guide member and the second guide member, the wind duct is separated and divided into several sub-wind ducts. The airflow is cut when passing through these sub-wind ducts. Since the air duct area becomes smaller, the airflow speed will increase; the second factor is that when the airflow passes through the first guide blade, a corresponding wind field will be generated on it, called the first wind field. Similarly, when the airflow passes through the second guide blade, a second wind field will be formed. Since they are arranged in an interlaced manner, the first wind field and the second wind field will affect each other, which can effectively weaken the radial component of the surface airflow of the first guide blade and the first guide blade, so that the airflow is gathered axially as much as possible, reducing the radial loss of the airflow on the first guide blade and the first guide blade, and increasing the wind pressure and air volume of the fan to a certain extent, thereby achieving the effect of increasing the wind speed.

[0007] Furthermore, the first guide blade includes a leading edge, a trailing edge, a top edge, and a bottom edge in the circumferential direction, the top edge is connected to the inner side of the outer ring body, the bottom edge is connected to the outer side of the inner ring body, the leading edge is close to the second guide member, the trailing edge is close to the fan, the angle between the top edge and the centerline of the first guide member is A1, and the range of A1 is 0 degrees-60 degrees, and the angle between the bottom edge and the centerline of the first guide member is A2, and the range of A2 is 0 degrees-60 degrees.

[0008] Furthermore, the angle at the curved portion of the leading edge is B1, and the range of B1 is 30 degrees to 150 degrees.

[0009] Furthermore, the radial distance between the inner ring body and the outer ring body is L1, and the range of L1 is 50mm-300mm.

[0010] Furthermore, the first guide member and the second guide member are arranged parallel to each other in the axial direction, and one end face of the outer ring body and one end face of the outer ring body are snap-fitted with each other, and a gap is provided between the first guide blade and the second guide blade in the axial direction, and the range of the gap is 10mm-20mm.

[0011] Furthermore, a protruding column is provided on one end surface of the inner ring body, and the protruding column passes through the motor.

[0012] Furthermore, the inner ring body is provided with an avoidance hole for avoiding the motor and a wire groove for routing wires.

[0013] Furthermore, the width of the outer ring body is L2, the range of L2 is 50mm-500mm, the width of the first guide blade is L3, the range of L3 is 5mm-50mm, and the first guide blade and the inner ring body are both located on one end surface of the outer ring body.

[0014] Furthermore, the width of the outer ring is L4, and the range of L4 is 5mm-50mm.

[0015] A fan comprises the air duct module, wherein the fan is a handheld fan; or, the fan is a neck-hanging fan; or, the fan is a waist-hanging fan; or, the fan is a folding fan; or, the fan is a desktop fan; or, the fan is a clamping fan; or, the fan is a vehicle-mounted fan.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] A first guide member and a second guide member are set, the first guide blade is bent and the second guide blade is straight, and the two are staggered in axial projection to form at least two intersections. When the airflow passes through, the airflow is cut and guided, so that the corresponding air duct becomes smaller when the airflow passes through, and the staggered arrangement can effectively weaken the first guide blade and the radial component of the surface airflow of the first guide blade, thereby increasing the wind speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0019] Figure 1 To invent an exploded diagram of an air duct module;

[0020] Figure 2 for Figure 1 Structural schematic diagram of the first flow guide a;

[0021] Figure 3 for Figure 1 Schematic diagram of the first flow guide structure b;

[0022] Figure 4 for Figure 1 Schematic diagram of the first flow guide structure c;

[0023] Figure 5 for Figure 1 Sectional view a of the first flow guide;

[0024] Figure 6 for Figure 1 Sectional view of the first flow guide member b;

[0025] Figure 7 for Figure 1 Schematic diagram of the structure of the first flow guide member d;

[0026] Figure 8 for Figure 1 Sectional view of the first flow guide c;

[0027] Fig. 9 for Figure 1 A schematic diagram of the structure of the second flow guide member;

[0028] Fig.10 for Figure 1 A cross-sectional view of the second flow guide;

[0029] Fig.11 for Figure 1 A schematic diagram of an axial projection of a first flow guide and a second flow guide;

[0030] Fig.12 To invent a schematic diagram of the overall structure of an air duct module a;

[0031] Fig.13 To invent a schematic diagram of the overall structure of an air duct module b;

[0032] Fig.14 The present invention provides a cross-sectional view of the overall structure of an air duct module. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0034] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] like Figure 1-14As shown, an air duct module described in the present invention includes a fan 1, a first air guide member 2, and a second air guide member 3, which are connected in sequence along the air outlet direction. When the air flow is blown out through the fan 1, it will encounter the first air guide member 2 and the second air guide member 3, and will be cut and guided by them before being blown out. The fan 1 includes fan blades 11 and a hub 12. The fan blades 11 are fixedly connected to the hub 12. A motor 13 is installed in the hub 12. The motor 13 is electrically connected to the fan 1. The fan blades 11 are connected to the hub 12 in an inclined manner, which has better wind gathering and guiding effects. The improved design of the fan blades 11 belongs to the prior art and will not be repeated here.

[0036] Specifically, the first guide member 2 is connected to one side of the fan 1 along the air outlet direction to cut and guide the airflow blown out by the fan 1. The first guide member 2 includes a first guide blade 21, an inner ring body 22, and an outer ring body 23. The outer ring body 23 is cylindrical and hollow inside to form a accommodating cavity 24. The fan 1, the inner ring body 22, and the first guide blade 21 are all located in the accommodating cavity 24 and are all located at one end of the outer ring body 23. One end of the first guide blade 21 is connected to the outside of the inner ring body 22, and the other end is connected to the inside of the outer ring body 23. The inner ring body 22 and the outer ring body 23 are concentric circles in the axial projection.

[0037] Specifically, the second guide member 3 includes a second guide blade 31, an inner ring body 32, and an outer ring body 33. The structural distribution is similar to that of the first guide member 2. The second guide member 3 is arranged on one side of the first guide member 2 along the air outlet direction, and cuts and guides the airflow together with the first guide member 2. The diameter of the inner ring body 32 is the same as that of the inner ring body 22, and the diameter of the outer ring body 33 is the same as that of the outer ring body 23. One end of the second guide blade 31 is connected to the outer side of the inner ring body 32, and the other end is connected to the inner side of the outer ring body 33.

[0038] Specifically, the first guide blade 21 is curved and the second guide blade 31 is straight. Since the first guide member 2 and the second guide member 3 are arranged adjacent to each other, the first guide blade 21 and the second guide blade 31 are also arranged adjacent to each other, and one is curved and the other is straight, so that they are staggered in the air outlet direction, that is, each second guide blade 31 intersects with the corresponding first guide blade 21 in the axial projection, and each second guide blade 31 has at least two intersection points 34 in the axial projection. An intuitive understanding is that a curve and a straight line intersect, and when the straight line passes through the curve, two intersection points 34 are formed. This staggered arrangement ensures that when the airflow passes through the first guide blade 21 and the second guide blade 31 in the air outlet direction, the airflow will be cut and guided at the position corresponding to the intersection point 34, thereby increasing the airflow speed.

[0039] Specifically, the principle of increasing wind speed is divided into two factors. The first factor is that the first guide blades 21 and the second guide blades 31 are arranged in an interlaced manner, which is equivalent to that at the first guide member 2 and the second guide member 3, the wind duct is separated and divided into several sub-wind ducts. The airflow is cut when passing through these sub-wind ducts. Since the air duct area becomes smaller, the airflow speed will increase; the second factor is that when the airflow passes through the first guide blade 21, a corresponding wind field will be generated on it, which is called the first wind field. Similarly, when the airflow passes through the second guide blade 31, a second wind field will be formed. Since they are arranged in an interlaced manner, the first wind field and the second wind field will affect each other, which can effectively weaken the radial component of the surface airflow of the first guide blade 21 and the first guide blade 21, so that the airflow is gathered axially as much as possible, reducing the radial loss of the airflow on the first guide blade 21 and the first guide blade 21, and increasing the wind pressure and air volume of the fan 1 to a certain extent, thereby achieving the effect of increasing the wind speed.

[0040] The inventors of the present application have experimentally demonstrated the relationship between the provision of the first guide member 2 and the second guide member 3 and the wind speed, and the results are shown in Table 1 below.

[0041] Table 1 is a summary of the experiment. The measurement conditions of the experiment are: a 3-inch motor and a matching fan 1, a motor voltage of 12V, a power of 3.5W, a speed of 9000 rpm (with load), and a test point at the air outlet.

[0042] Table 1:

[0043]

[0044]

[0045] It can be found from the experimental data that when there are only a motor and a fan 1 in the air duct device, the wind speed at the air outlet is the smallest. When the first air guide 2 or the second air guide 3 is arranged in front of the fan 1, the wind speed increases. When the first air guide 2 and the second air guide 3 are arranged in sequence according to the order of air outlet, the tested wind speed is the largest, and the wind speed is obviously greatly increased. However, when the installation order of the first air guide 2 and the second air guide 3 is swapped, the wind speed does not increase much. It can be seen that the optimal solution is to arrange the fan 1, the first air guide 2, and the second air guide 3 in sequence according to the air outlet direction, that is, to arrange the first air guide 2 and the second air guide 3 in sequence in front of the fan 1, which can effectively increase the wind speed.

[0046] Preferably, the first guide blade 21 includes a leading edge 211, a trailing edge 212, a top edge 213, and a bottom edge 214 in the circumferential direction. The top edge 213 is connected to the inner side of the outer ring body 23, and the bottom edge 214 is connected to the outer side of the inner ring body 22. The leading edge 211 is close to the second guide member 3, and the trailing edge 212 is close to the fan 1. The angle between the top edge 213 and the center line of the first guide member 2 is A1, and the range of A1 is 0 degrees-60 degrees. The angle between the bottom edge 214 and the center line of the first guide member 2 is A2, and the range of A2 is 0 degrees-60 degrees.

[0047] Specifically, the first guide blade 21 is tilted relative to the axial direction, so that the surface of the first guide blade 21 and the airflow along the air outlet direction form an angle, further enhancing the guide effect.

[0048] Specifically, the second guide blade 31 is arranged parallel to the axial direction, so that after the airflow passes through the second guide blade 31, it is discharged in the axial direction. The wind blown out of the air outlet is parallel to the axial direction and will not form turbulence. The wind blown out provides a better user experience.

[0049] Preferably, the angle at the bend of the leading edge 211 is B1, and the range of B1 is 30 degrees to 150 degrees.

[0050] Specifically, since the first guide blade 21 needs to be bent, there will be at least one bend, and the angle B1 is the angle of the bend. Setting the angle within this range can make the first guide blade 21 and the second guide blade 31 better cooperate to form a cutting and guiding effect.

[0051] Preferably, the radial distance between the inner ring body 22 and the outer ring body 23 is L1, and the range of L1 is 50mm-300mm.

[0052] Preferably, the first guide member 2 and the second guide member 3 are arranged parallel to each other in the axial direction, and one end face of the outer ring body 23 and one end face of the outer ring body 33 are snap-fitted with each other, and a gap is provided between the first guide blade 21 and the second guide blade 31 in the axial direction, and the gap ranges from 10mm to 20mm.

[0053] Specifically, the first flow guide 2 and the second flow guide 3 are arranged adjacent to each other, and there is inevitably some gap between them. This gap is optimal within this range, so that the two can be better staggered and matched with each other.

[0054] Preferably, a protruding column is provided on one end surface of the inner ring body 22 , and the protruding column passes through the motor 13 .

[0055] Preferably, the inner ring body 22 is provided with an avoidance hole 221 for avoiding the motor 13 and a wire groove 222 for wiring.

[0056] Preferably, the width of the outer ring body 23 is L2, the range of L2 is 50mm-500mm, the width of the first guide blade 21 is L3, the range of L3 is 5mm-50mm, and the first guide blade 21 and the inner ring body 22 are both located on one end surface of the outer ring body 23.

[0057] Preferably, the width of the outer ring 33 is L4, and the range of L4 is 5 mm-50 mm.

[0058] A fan comprises an air duct module. The fan is a handheld fan; or, the fan is a neck-hanging fan; or, the fan is a waist-hanging fan; or, the fan is a folding fan; or, the fan is a desktop fan; or, the fan is a clamping fan; or, the fan is a vehicle-mounted fan.

[0059] Specifically, the fan uses this air duct module to increase the wind speed, and even if an ordinary motor 13 is used, the effect of a high-speed motor 13 can be achieved, which greatly reduces the production cost and improves the user experience. This interlaced guide member setting can be applied to any fan-related field, not limited to portable fans.

[0060] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An air duct module, characterized in that: include: A fan, the fan comprising blades and a hub, a motor is installed in the hub, and the motor is electrically connected to the fan; A first guide member, the first guide member comprises a first guide blade, an inner ring body, and an outer ring body, wherein an accommodation cavity is formed inside the outer ring body, the fan, the inner ring body, and the first guide blade are all located in the accommodation cavity, and one end of the first guide blade is connected to the outer side of the inner ring body, and the other end is connected to the inner side of the outer ring body; A second flow guide, the second flow guide comprises a second flow guide blade, an inner ring body, and an outer ring body, the inner ring body has the same diameter as the inner ring body, the outer ring body has the same diameter as the outer ring body, one end of the second flow guide blade is connected to the outer side of the inner ring body, and the other end is connected to the inner side of the outer ring body, and the second flow guide is connected to an end of the first flow guide away from the fan; The first guide blade is curved, and the second guide blade is straight. Each of the second guide blades intersects with the corresponding first guide blade in the axial projection in the axial projection, and each of the second guide blades has at least two intersection points in the axial projection. When the airflow passes through the second guide blade along the outlet direction, it is cut at the position corresponding to the intersection, so that the wind speed of the airflow increases.

2. The air duct module according to claim 1, characterized in that: The first guide blade includes a leading edge, a trailing edge, a top edge, and a bottom edge in the circumferential direction, the top edge is connected to the inner side of the outer ring body, the bottom edge is connected to the outer side of the inner ring body, the leading edge is close to the second guide member, the trailing edge is close to the fan, the angle between the top edge and the centerline of the first guide member is A1, and the range of A1 is 0 degrees-60 degrees, the angle between the bottom edge and the centerline of the first guide member is A2, and the range of A2 is 0 degrees-60 degrees.

3. The air duct module according to claim 1, characterized in that: The included angle of the curved front edge is B1, and the range of B1 is 30 degrees to 150 degrees.

4. The air duct module according to claim 1, characterized in that: The radial distance between the inner ring body and the outer ring body is L1, and the range of L1 is 50mm-300mm.

5. The air duct module according to claim 1, characterized in that: The first guide member and the second guide member are arranged parallel to each other in the axial direction, and one end face of the outer ring body and one end face of the outer ring body are snap-fitted with each other, and a gap is provided between the first guide blade and the second guide blade in the axial direction, and the gap ranges from 10mm to 20mm.

6. The air duct module according to claim 1, characterized in that: A protruding column is disposed on one end surface of the inner ring body, and the protruding column passes through the motor.

7. The air duct module according to claim 1, characterized in that: The inner ring body is provided with an avoidance hole for avoiding the motor and a wire passing groove for wiring.

8. The air duct module according to claim 1, characterized in that: The width of the outer ring body is L2, and the range of L2 is 50mm-500mm. The width of the first guide blade is L3, and the range of L3 is 3mm-30mm. The first guide blade and the inner ring body are both located at one end surface of the outer ring body.

9. The air duct module according to claim 1, characterized in that: The width of the outer ring is L4, and the range of L4 is 5mm-50mm.

10. A fan, characterized in that: The air duct module comprises any one of claims 1 to 9, wherein the fan is a handheld fan; Alternatively, the fan is a neck-hanging fan; Alternatively, the fan is a waist-mounted fan; Alternatively, the fan is a folding fan; Alternatively, the fan is a desktop fan; Alternatively, the fan is a clamp-on fan; Alternatively, the fan is a vehicle-mounted fan.

Images