WO2022193869A1

WO2022193869A1 - Rotor, fan, and stand fan

Info

Publication number: WO2022193869A1
Application number: PCT/CN2022/075625
Authority: WO
Inventors: 杨彤; 陈位
Original assignee: 追觅科技(上海)有限公司
Priority date: 2021-03-15
Filing date: 2022-02-09
Publication date: 2022-09-22

Abstract

A rotor, comprising a hub (11A) and blades (12A) distributed at the center of the hub (11A) with the center of the hub (11A) as the center point. The thickness of a first cross section (121A) of the blades (12A) is equal to or greater than that of a second cross section (122A) of the blades (12A), and the thickness of the second cross section (122A) of the blades (12A) is greater than that of a third cross section (123A) of the blades (12A), wherein the first cross section (121A) is a cylindrical cross section of a root portion, the second cross section (122A) is a cylindrical cross section Sz at 30%-70% of the height of a blade, and the third cross section (123A) is a cylindrical cross section of a top portion. The design of the blades (12A) ensures the strength of the root portions of the blades (12A) and prevents cracking of the root portions, reduces the weight of the main load surfaces of the blades (12A), facilitates the dynamic balance design of the blades (12A), and reduces the operation load of a motor; the included angle (β) between the chord projection (b) on a planar blade cascade and the axis (L2) of the rotor is gradually increased in the blade height direction, such that generation of backflow caused by too small total pressure of the root portions of the rotor and too dense grids can be prevented while effectively improving the efficiency of the grids. Also provided are a fan and a stand fan.

Description

A wind wheel, fan and floor fan

【Technical field】

The invention relates to the technical field of fans, in particular to a wind wheel, a fan and a floor fan.

【Background technique】

In the prior art, the air supply distance, air volume and central wind speed of the fan wheel of the floor fan have always been important performance parameters for judging the quality of the floor fan, and it is often difficult for the current fan wheel to have both.

Floor fans have been developing towards a thinner trend, and the design of the wind wheel has always been an important factor affecting the overall thickness of floor fans. If the thickness is simply scaled in the axial direction, it will lead to changes in blade parameters, which will inevitably affect the fan. Efficiency and use effect.

Therefore, it is necessary to improve the prior art to overcome the stated drawbacks in the prior art.

[Content of the invention]

The purpose of the present invention is to provide a wind wheel, a fan and a floor fan to solve the defects existing in the background art.

The purpose of this invention is to realize through the following technical solutions:

A wind wheel, comprising a hub and blades, the blades are evenly distributed on the outer surface of the hub; the thickness of the blade in the first section is equal to or greater than the thickness of the blade in the second section; the blade is in The thickness of the second section is greater than the thickness of the blade in the third section;

Wherein, the first section is the cylindrical section at the root of the blade, the second section is the cylindrical section Sz at 30%-70% of the blade height, and the third section is the cylinder at the top of the blade shaped section.

Further, the thickness of the blade in the first section to the thickness of the blade in the second section remains unchanged, and the thickness of the blade in the second section to the thickness in the third section of the blade gradually decreases .

Further, the blade includes a leading edge, a trailing edge, a suction surface and a pressure surface;

The blade is cut by a cylindrical section to form the original curved surface of the section. On the original curved surface of the section, the shortest curve between the leading edge and the trailing edge of the blade is the blade chord length b', and the suction surface is on the There is a maximum camber position on the original curved surface of the section, and the intersection point of the shortest distance curve from the maximum camber position to the blade chord length b' and the blade chord length b' is o';

The vertical line L1 is a straight line passing through the o' point and perpendicular to the rotor axis L2, and the projection plane is a plane passing through the rotor axis L2 and taking the vertical line L1 as the normal line; the original curved surface of the section is projected on the A plane cascade is formed on the projection surface;

On the plane cascade, the maximum inflection point of the projection of the suction surface is point P1, the projection of the blade chord length b' is the chord projection b, and from the P1 point to the chord projection b The intersection of the vertical line and the projection of the pressure surface is P2, and the connecting line between the points P1 and P2 is the maximum thickness c of the plane cascade.

From the first section to the third section, the maximum thickness c on the plane blade cascade gradually decreases, or remains unchanged and then gradually decreases.

Further, the maximum thickness c of the planar blade cascade remains unchanged or decreases from the first section to the second section; and gradually decreases from the second section to the third section.

Further, the included angle between the chord projection b and the rotor axis L2 is β, and the angle β gradually increases from the first section to the third section.

Further, the β angle formed in the first section is β _hub , the β angle formed in the third section is β _th , and β _th −β _hub ≥15°.

Further, on the plane cascade, o is the projection of o' on the projection plane, a is the projection point of the leading edge of the blade on the projection plane in the chord projection b to o The distance between the points forms a _hub and b _hub in the first section, and the relationship between a _hub and b _hub is 0.3≤a _hub /b _hub≤0.5 .

Further, a _Sz and b _Sz are formed on the second cross section, and the relationship between a _Sz and b _Sz is 0.4≦a _Sz /b _Sz ≦0.5.

Further, a _th and b _th are formed in the third section, and the relationship between a _th and b _th is 0.45≦a _th /b _th ≦0.5.

Further, a _hub /b _hub ≤a _Sz /b _Sz ≤a _th /b _th .

Correspondingly, the present invention also provides a fan, wherein the fan includes a wind wheel as described in any one of the above.

A fan, comprising at least two interconnected connecting rods, one end of the connecting rod is a male end assembly, the other end is a female end assembly that can be butted with the male end assembly, the connecting rod is close to the male end assembly A button is arranged on one side of the device, and the connecting rods connected to each other are separated by pressing the button.

Further, the male end assembly further includes a plug and an elastic member, and the elastic member abuts between the plug and the button.

Further, the button includes a protruding clip, the female end assembly has a clip slot matched with the clip, the male end assembly and the female end assembly pass through the clip It cooperates with the card slot to realize the snap-fastening.

Further, the clip includes a guide surface and a limit curved surface, the guide surface gradually protrudes in a direction close to the upper end of the button, and the limit curved surface is used for mutual limit with the card slot.

Further, the plug includes a reinforcing rib located on the outer surface of the plug and a groove for accommodating the button.

Further, the reinforcing rib is connected with the root surface of the plug, and the connection with the root surface of the plug is provided with a chamfer.

Further, the male end assembly also includes:

a first pin holder, accommodated in the plug;

a male pin, fixed on the first pin bracket, and used for electrical connection with the female end assembly; and

A fixing piece, one end of which is inserted and fixed with the plug, and the fixing piece has a through hole through which the button passes.

Further, the female end assembly includes a socket and a female end terminal assembly disposed in the socket, the female end terminal assembly is used for electrical connection with the male end assembly, and the socket is provided with a socket that can accommodate the plug. A receiving cavity is used to realize the plugging of the female end assembly and the male end assembly.

Further, the female terminal assembly includes a female pin and a second pin bracket for fixing the female pin, and the second pin bracket is fixed in the socket.

Further, the fan further includes a grill, and the grill is detachably connected with the connecting rod.

A fan, comprising at least two interconnected connecting rods, one end of the connecting rod is a male end assembly, the other end is a female end assembly that can be butted with the male end assembly, the male end assembly and the One of the female end components is provided with a pin, and the other is provided with a metal sheet corresponding to the pin, so that the male end component and the female end component are electrically connected.

Further, the male end assembly includes a plug, and the female end assembly includes a socket, the socket has a plug cavity into which the plug is inserted, and the plug and the socket are snap-connected by rotating.

Further, the plug includes a guide block and a locking block arranged at intervals, and there is a locking space between the guide block and the locking block.

Further, the socket has a guide groove recessed relative to the inner wall of the socket, and the guide groove includes a first through hole, a second through hole and a card connecting the first through hole and the second through hole block.

Further, the guide block is accommodated in the first through hole, the snap block is accommodated in the second through hole, and the snap block is accommodated in the snap space.

Further, the male end assembly is provided with a plurality of the metal sheets, and the female end assembly is provided with a plurality of the pins.

Further, the metal sheet includes a sliding groove and a fixing portion connected with the sliding groove, and when the male end assembly and the female end assembly are butted together, the pin can slide in the sliding groove.

Further, the male end assembly has a male plug end cover, the male plug end cover is provided with a first through hole corresponding to the metal sheet one-to-one, and the metal sheet is accommodated in the first through hole.

Further, the female end assembly further includes a cover plate, the cover plate is provided with second through holes corresponding to the pins one-to-one, and the pins pass through the second through holes and are electrically connected to the metal sheet connect.

Further, the fan further includes a grill, and the grill is detachably connected to the connecting rod.

A floor fan, comprising: a grill assembly, an impeller, a motor, and a support rod;

One end of the motor is accommodated in the hub of the impeller, and the other end of the motor is fixed inside the grille component, and the grille component is directly connected to one end of the support rod.

Further, the front and rear ends of the grill assembly are vertical planes and are arranged in parallel.

Further, the grille assembly includes a rear grille and a front grille matched with the rear grille, and the rear grille is snap-connected to the front grille.

Further, a vibration damping pad is also included, and the vibration damping pad is arranged between the motor and the rear grille.

Further, the grille assembly further includes a bracket, the motor is fixed on the bracket, the bracket and the rear grille are integrally formed, or the bracket is detachably connected to the rear grille.

Further, it also includes an operation panel disposed on the outer surface of the grill assembly, and a control unit disposed between the grill assembly and the operation panel.

Further, the hub of the impeller is double-walled, and several reinforcing ribs are arranged between the double-layered walls.

Further, the support rod is detachably connected with the grill assembly.

Further, the support rod includes a fixed part and a rotating part, and the fixed part and the rotating part are pivotally connected.

Further, the support rod includes a first rod body and a second rod body, and the first rod body and the second rod body are detachably connected.

Further, it also includes a chassis, the chassis is provided with a rotating structure, and the rotating structure is connected with the other end of the support rod.

Further, the chassis further includes a receiving groove, and the receiving groove is used for receiving the first rod body and the second rod body.

Compared with the prior art, the present invention has the following beneficial effects:

The design of the blade in the present invention ensures the strength of the blade root, prevents it from cracking, reduces the weight of the main load surface of the blade, contributes to the dynamic balance design of the blade, and reduces the operating load of the motor; the chord projection b on the plane blade cascade is equal to The angle β between the axes of the wind rotors is gradually increased to prevent the root of the wind rotor from being too small and the grid to be too dense to generate backflow, and at the same time, it can effectively improve the efficiency of the wind rotor.

【Description of drawings】

Fig. 1 is the three-dimensional schematic diagram of wind wheel in the present invention;

Fig. 2 is another three-dimensional schematic diagram of the wind wheel in the present invention;

Fig. 3 is the front view of wind wheel in the present invention;

Fig. 4 is the top view of the wind wheel in the present invention;

Fig. 5 is the projection schematic diagram of blade section curved surface in the present invention;

6 is a schematic diagram of a plane blade cascade after the blade section is projected in the present invention

7 is a schematic diagram of the relationship between the plane cascade and the axis after the blade section is projected in the present invention.

Figure 8 is an exploded perspective view of the present invention.

Figure 9 is an exploded view from one perspective of the male and female assemblies of the present invention.

10 is an exploded view of another perspective of the male and female components of the present invention.

FIG. 11 is a partial cross-sectional view of the present invention.

Figure 12 is an exploded perspective view of the present invention.

FIG. 13 is an enlarged view of part A of FIG. 12 .

FIG. 14 is an exploded perspective view of the present invention from another perspective.

FIG. 15 is an enlarged view of part B of FIG. 14 .

Fig. 16 is a partial cross-sectional view of the present invention.

Figure 17 is a three-dimensional schematic diagram of a floor fan in the present invention;

Figure 18 is a schematic diagram of a partial disassembly of a floor fan in the present invention;

Fig. 19 is a perspective disassembled view of a floor fan in the present invention;

Figure 20 is another perspective disassembly view of a floor fan in the present invention;

Figure 21 is another partial disassembly view of a floor fan in the present invention;

Figure 22 is a disassembled view of a support rod of a floor fan in the present invention;

Figure 23 is a disassembled view of a chassis of a floor fan in the present invention;

Figure 24 is another disassembled view of the chassis of a floor fan in the present invention.

【Detailed ways】

The present invention will be further described in detail below in conjunction with the accompanying drawings, and the foregoing and other objects, features, aspects and advantages of the present invention will become more apparent, so that those skilled in the art can implement them with reference to the description. In the drawings, the shapes and dimensions may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to refer to the same or like parts. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc. are based on the orientation or positional relationship shown in the drawings. These relative terms are for convenience of description and are generally not intended to require a specific orientation. Terms referring to attachment, coupling, etc. (eg, "connected" and "attached") refer to the fixed or attached relationship, as well as the movable or rigid attachment or relationship of these structures to each other, directly or indirectly, through intervening structures, unless The other way is explicitly stated.

Next, the present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be noted that, on the premise of no conflict, the embodiments or technical features described below can be combined arbitrarily to form new implementations. example. It should be understood that terms such as "having", "comprising" and "including" as used herein do not assign the presence or addition of one or more other elements or combinations thereof.

Example 1:

1 to 7, a wind turbine includes a hub 11A and blades 12A, the blades 12A are evenly distributed on the outer surface of the hub 11A, and the blades 12A include a root, a top and a blade height.

The thickness of the blade 12A at the first section 121A is equal to or greater than the thickness of the blade at the second section 122A; the thickness of the blade at the second section 122A is greater than the thickness of the blade at the third section 123A; referring to FIG. 3, the blade 12A is from the root to the top. The main control section includes: the root cylindrical section, the cylindrical section Sz located at 30%-70% of the leaf height, and the top cylindrical section; wherein, the first section 121A is the root cylindrical section, and the second section 122A is 30% - Cylindrical section Sz at 70% of the leaf height, the third section 123A is the top cylindrical section. Specifically, the second section 122A is a cylindrical section at 50% of the leaf height. Preferably, from the first section 121A to the second section 122A, the thickness of the blade 12A at the first section 121A to the thickness of the blade 12A at the second section 122A remains unchanged, and the thickness of the blade 12A at the second section 122A to the blade at the second section 122A remains unchanged. The thickness of the three sections 123A gradually decreases.

As shown in Figures 1-5, the blade 12A includes a leading edge 124A, a trailing edge 125A, a suction surface 126A, and a pressure surface 127A. In the rotational direction of the impeller 12A, the leading edge 124A is positioned forward in the rotational direction, and the trailing edge 125A is positioned rearward in the rotational direction. Referring to FIG. 3 , the leading edge 124A has a larger arc, and the trailing edge 125A has a smaller arc. Among them, the shortest curve of the leading edge 124A and the trailing edge 125A on the cylinder of their cross-section is called the blade chord length b', and the blade chord length b' is a curve, which cannot characterize the specific relationship between them and the axis. Concept of flat cascades.

Referring to FIG. 5 , after the blade 12A is cut by a cylindrical shape, an original cross-section curved surface 130A is formed. On the cross-section original curved surface 130A, the shortest curve between the leading edge 124A and the trailing edge 125A of the blade is the blade chord length b′, and the suction surface is projected 1261A There is a maximum camber position on the original curved surface 130A of the section, and the intersection point o' between the curve of the shortest distance from the maximum camber position to the blade chord length b' and the blade chord length b'. The vertical line L1 is a straight line passing through the o' point and perpendicular to the rotor axis L2, and the projection surface 140A is a plane passing through the rotor axis L2 and taking the vertical line L1 as the normal line; the original curved surface 130A of the section is projected on the projection surface 140A Form a flat cascade.

Referring to FIG. 6 , after the section original curved surface 130A is projected onto the projection surface 140A, there are corresponding leading edge projection points 1241A, trailing edge projection points 1251A, suction surface projections 1261A and pressure surface projections 1271A.

On the plane cascade, o is the projection of o' on the projection surface 140A, and the projection of the blade chord length b' on the projection surface 140A is the chord projection b. In FIG. 6, the chord projection b is the projection of the blade 12A. The distance from the leading edge projection point 1241A of the leading edge 124A on the projection plane 140A to the trailing edge projection point 1251A of the trailing edge 125A of the blade 12A on the projection plane 140A, a is the leading edge 124A of the blade 12A in the chord projection b The distance from the leading edge projection point 1241A on the projection surface 140A to point o.

On the plane cascade, the maximum inflection point 128A of the suction surface projection 1261A is P1, the intersection of the vertical line of the chord projection b through the pressure surface projection 1271A is P2, and the connection between the P1 point and the P2 point is the plane cascade. Maximum thickness c.

From the first section 121A to the third section 123A, the maximum thickness c of the blade 12A on the plane cascade along the blade height direction gradually decreases, or remains unchanged and then gradually decreases. Among them, the leaf height direction is from the root to the top. Specifically, the maximum thickness c of the blade 12A along the blade height direction on the plane cascade remains unchanged or decreases from the first section 121A to the second section 122A; and gradually decreases from the second section 122A to the third section 123A. Preferably, from the first section 121A to the second section 122A, the maximum thickness c of the plane cascade remains unchanged, and from the second section 122A to the third section 123A, the maximum thickness gradually decreases along the blade height. This structure ensures that the blade 12A The strength of the root prevents it from cracking, and at the same time, it reduces the weight of the main load surface of the blade 12A, which helps the dynamic balance design of the blade 12A, reduces the operating load of the motor, and satisfies the need for lighter and thinner fans.

Referring to FIG. 7 , the included angle between the chord length projection b on the plane blade cascade and the axis L2 of the wind rotor is β, and the angle β gradually increases from the root to the top.

The β angle formed in the first section 121A is β _hub , the β angle formed in the third section 123A is β _th , and β _th −β _hub ≥15°.

The grille of the fan is denser at the root and sparser at the top. The smaller the β angle of the wind wheel, the greater the total pressure. The larger the β angle of the wind wheel, the smaller the total pressure. The backflow phenomenon caused by small and dense grille; at the same time, the larger β angle at the top of the wind wheel can effectively improve the efficiency of the wind wheel.

As shown in FIG. 6 , on the plane cascade, o is the projection of o' on the projection surface 140A, a is the projection point 1241A and point o of the leading edge 124A of the blade on the projection surface 140A in the chord projection b The distance between a _hub and b _hub is formed on the first section 121A, and the relationship between a _hub and b _hub is 0.3≤a _hub /b _hub≤0.5 .

A _{Sz and b Sz are formed in the second cross section 122A, and the relationship between a Sz} _and _b _Sz is 0.4≦a _Sz /b _Sz ≦0.5.

A _th and b _th are formed in the third section 123A, and the relationship between a _th and b _th is 0.45≦a _th /b _th ≦0.5, and a _hub /b _hub ≦a _Sz /b _Sz ≦a _th /b _th . The precise design of a and b contributes to the dynamic balance design of the blade 12A and reduces the running load of the motor.

The a/b value from the root to the top of the blade 12A gradually increases, which can effectively reduce the curvature of the blade, thereby solving the problem that the blade is easily broken due to excessive bending during use.

Correspondingly, the present invention also provides a fan with a wind wheel, and the fan includes any one of the above-mentioned wind wheels.

The design of the blade in this embodiment ensures the strength of the root of the blade, prevents it from cracking, reduces the weight of the main load surface of the blade, contributes to the dynamic balance design of the blade, and reduces the operating load of the motor; the chord projection on the plane cascade b The angle β between the axis of the wind wheel and the wind wheel is gradually increased, which prevents the back flow at the root of the wind wheel due to too small total pressure and too dense grille, and at the same time can effectively improve the efficiency of the grille.

The above is only a specific embodiment of the present invention, and any improvements made based on the concept of the present invention are regarded as the protection scope of the present invention.

Embodiment 2:

Referring to FIGS. 8 to 11 , an embodiment of the present invention provides a fan, which includes at least two connecting rods 1B connected to each other, one end of the connecting rod 1B is a male end component 2B, and the other end is a male end component that can be connected to each other. For the female end assembly 3B of 2B butted, the side of the connecting rod 1B close to the male end assembly 2B is provided with a button 21B, and the connected connecting rods 1B are separated by pressing the button 21B.

Among them, the components formed by the detachable connection of each connecting rod 1B can be used to connect the base 4B and the fan head 5B, and can also realize the electrical connection between the base 4B and the fan head 5B. When two connecting rods 1B are connected, the male end assembly 2B on one connecting rod 1B can be connected with the female end assembly 3B on the other connecting rod 1B. When the connecting rod 1B is connected with other structures of the fan, it can be The male end assembly 2B (or the female end assembly 3B) on the connecting rod 1B is correspondingly connected with the female end assembly 3B (or the male end assembly 2B) on the other structure, for example, the lower end of the lowermost connecting rod 1B is provided with a The male end assembly 2B and the base 4B are provided with a female end assembly 3B, so as to realize the connection between the connecting rod 1B and the base 4B.

The connecting rod 1B has a hollow shell 11B, which can be a single pipe or assembled from a plurality of pipes. The male end assembly 2B and the female end assembly 3B are respectively detachably fixed on the casing 11B. The casing 11B has a pressing hole 111B for accommodating the button 21B. During assembly, the male end assembly 2B and its corresponding female end assembly 3B are detachably connected to realize the connection between the connecting rod 1B, or the connection between the connecting rod 1B and other components of the fan. After assembly, the button 21B is partially accommodated in the fan. Press the hole 111B to facilitate pressing; when disassembling, press the button 21B to move the two connecting rods 1B in opposite directions, so as to disassemble the two.

In this embodiment, the fan rod of the fan is divided into several connecting rods 1B, the quick installation between the connecting rods 1B is realized by setting the male end assembly 2B and the female end assembly 3B, and the male end assembly is realized by pressing the button 21B The quick disassembly of 2B and the female end assembly 3B improves the disassembly and assembly efficiency.

The male end assembly 2 further includes a plug 22B and an elastic member 23B, and the elastic member 23B abuts between the plug 22B and the button 21B. The plug 22B is detachably fixed on the casing 11B of the corresponding connecting rod 1B, the first end 211B of the button 21B corresponds to the pressing hole 111B and is in contact with the elastic member 23B, and the second end 212B of the button 21B directly Or indirectly connected to the plug 22B in rotation. In this embodiment, the button 21B is automatically reset by the elastic member 23B, which improves the convenience of use.

The button 21B includes a raised snap member 213B, the female end assembly 3B has a card slot 312B that fits with the snap member 213B, and the male end assembly 2B and the female end assembly 3B cooperate with the snap member 213B and the card slot 312B to achieve a snap fit. Buckle to secure. The clip 213B is located at the second end 212B of the button 21B or the middle of the button 21B; the clip 213B and other parts of the button 21B can be integrally formed, or can be separately manufactured and fixed together. During installation, the male end assembly 2B and the female end assembly 3B are moved toward each other, and the clip 213B and the female end assembly 3B slide relative to each other until the clip 213B is accommodated in the slot 312B to realize the male end assembly 2B and the female end assembly. Fixing of 3B; when disassembling, press the first end 211B of the button 21B to make the buckle 213B rotate and disengage from the slot 312B, so that the male end assembly 2B and the female end assembly 3B can be separated from each other.

The clip 213B includes a guide surface 214B and a limit curved surface 215B. The guide surface 214B gradually protrudes in a direction close to the upper end (first end 211B) of the button 21B. The clip 213B is convex, and the closer it is to the first end 211B of the button 21B, the greater the degree of convexity, thereby forming a protruding guide surface 214B; the limit surface is located at the edge of the guide surface 214B, preferably a limit The surface is an annular shape or an annular shape with a notch, so that the matching with the card slot 312B is more stable and the reliability of the fan is improved.

The plug 22B includes a reinforcing rib 221B on the outer surface of the plug 22B and a groove 222B for accommodating the button 21B. The middle part of the plug 22B has a cavity 223B that penetrates up and down, so as to accommodate and/or fix the components used for conductive connection with the female terminal assembly 3B. The side of the plug 22B forms a groove 222B, and the groove 222B faces the side of the housing 11B It is an open type to expose the buckle 213B on the button 21B; the second end 212B of the button 21B is movably connected to the lower part of the groove 222B, and a first end 211B of the button 21B and the upper end of the groove 222B are provided between There is the above-mentioned elastic member 23B.

The reinforcing rib 221B is connected to the root surface of the plug 22B, and the connection with the root surface of the plug 22B is provided with a chamfer. The plug 22B is used as a force bearing member, and the reinforcing rib 221B improves its strength and rigidity and prolongs its service life.

The male end assembly 2B further includes a first pin holder 24B, a male pin (not shown in the figure) and a fixing member 25B. The first pin holder 24B is accommodated in the plug 22B, and two ends of the first pin holder 24B are respectively Abutting against the plug 22B and the fixing member 25B; the first pin bracket 24B has holes corresponding to the male pins one-to-one, and the male pins penetrate through the first pin bracket 24B so as to be electrically connected with the female terminal assembly 3B.

One end of the fixing member 25B is fixedly connected to the housing 11B, and the other end is inserted into the plug 22B. The other end of the fixing member 25B has a first slot 251B, and one end of the plug 22B is inserted into the first slot 251B; the interior of the fixing member 25B is isolated into two cavities 252B, one of which is the cavity 252B and the plug 22B. The groove 222B of the plug 222B is connected to each other, the position of the groove 222B for abutting the elastic member 23B abuts on the one cavity 252B, and the other cavity 252B is in position corresponding to the cavity 223B of the plug 22B up and down, the other cavity 252B The end face of one cavity 252B abuts the first pin holder 24B within the cavity 223B of the plug 22B. The fixing member 25B has a via hole 253B corresponding to the position of the pressing hole 111B, and the first end 211B of the button 21B passes through the via hole 253B.

The female end assembly 3B includes a socket 31B and a female end terminal assembly 32B arranged in the socket 31B. The female end terminal assembly 32B is used for electrical connection with the male pins of the male end assembly 2B. The accommodating cavity 311B is used to realize the electrical connection between the female end assembly 3B and the male end assembly 2B. The female terminal assembly 32B is fixed in the socket 31B, and a space for inserting the male terminal 2B is formed between the female terminal assembly 32B and the inner wall of the socket 31B.

The female terminal assembly 32B includes female pins and a second pin bracket 321B for fixing the female pins. One end of the second pin bracket 321B is fixed in the socket 31B, and the other end has mounting holes 322B corresponding to the female pins. , the female pin penetrates through the mounting hole 322B and is fixed on the second pin bracket 321B.

The fan also includes a grille 51B, which is detachably connected to the connecting rod 1B. Among them, the grille 51B is used for guiding the wind, and it is arranged above the connecting rod 1B.

Embodiment three:

Referring to FIGS. 12 to 16 , an embodiment of the present invention provides a fan, which includes at least two connecting rods 1C connected to each other. One end of the connecting rod 1C is a male end assembly 2C, and the other end is a male end assembly that can be connected to each other. 2C docked female end assembly 3C, one of the male end assembly 2C and the female end assembly 3C is provided with a pin 31C, and the other is provided with a metal sheet 21C corresponding to the pin 31C, so that the male end assembly 2C and the female end assembly are 3C electrical connection.

Among them, the components formed by the detachable connection of each connecting rod 1C can be used to connect the base 4C and the fan head, and can also realize the electrical connection between the base 4C and the fan head. When two connecting rods 1C are connected, the male end assembly 2C on one connecting rod 1C can be connected with the female end assembly 3C on the other connecting rod 1C. When the connecting rod 1C is connected with other structures of the fan, it can be The male end component 2C (or the female end component 3C) on the connecting rod 1C is correspondingly connected with the female end component 3C (or the male end component 2C) on the other structure.

In this embodiment, after the male end assembly 2C and the female end assembly 3C are connected, they are electrically connected through the point-to-surface contact between the pin 31C and the metal sheet 21C. Relative to the preset position, the stability and reliability of the electrical connection between the male end assembly 2C and the female end assembly 3 can still be guaranteed.

The male end assembly 2C includes a plug 22C, which is directly or indirectly detachably connected to the housing 11C of its corresponding connecting rod, and the female end assembly 3 includes a socket 32C, which is directly or indirectly detachably connected to its corresponding connecting rod. In the housing 11C of the connecting rod, the socket 32C has a plug cavity 321C into which the plug 22C is inserted, and the plug 22C and the socket 32C are snap-connected by rotating. One of the plug 22C and the socket 32C may be provided. One of the plug 22C and the socket 32C is installed with the above-mentioned pin 31C, and the other is installed with the above-mentioned metal sheet 21C. After the plug 22C and the socket 32C are engaged, the pin 31C The electrical connection is achieved by contacting the metal sheet 21C. It is true that during the relative rotation of the plug 22C and the socket 32C, the pin 31C and the metal sheet 21C can also be in contact.

The plug 22 includes a guide block 221C and a locking block 222C arranged at intervals, and there is a locking space 223C between the guide block 221C and the locking block 222C. Among them, the guide block 221C and the snap block 222C can be arranged on the side of the plug 22C, and the two can be arranged at intervals along the circumferential direction of the plug 22C, and preferably both protrude from the surface of the plug 22C; the snap space 223C is used for connecting with the socket. 32C is engaged.

The socket 32C has a guide groove 325C recessed relative to the inner wall of the socket 32C. The guide groove 325C includes a first through hole 322C, a second through hole 323C, and a connection between the first through hole 322C and the second through hole 323C. The snap block 324C. The guide block 221C is accommodated in the first through hole 322C, the locking block 222C is accommodated in the second through hole 323C, the engaging block 324C is accommodated in the engaging space 223C, and the engaging block 324C is engaged in the engaging space 223C Afterwards, the connection between the plug 22C and the socket 32C is realized.

Wherein, the guide groove 325C can guide the guide block 221C and/or the locking block 222C, so as to guide the locking block 222C to be screwed into or out of the second through hole 323C, and the guide block 221C to be screwed into or out of the first through hole 323C. In the hole 322C, the clamping block 324C is screwed into or out of the clamping space 223C.

One end of the guide groove 325C has the above-mentioned second through hole 323C, and the other end extends to the end face of the socket 32C, so that the guide block 221C and the snap block 222C can be quickly positioned and guided during installation. The guide groove 325C may extend in a curved shape, or may be in an L-shaped shape.

The snap block 222C has two oppositely arranged wedge-shaped guide surfaces 224C for sliding relative to the snap block 324C until the snap block 324C snaps into or out of the snap space 223C, so as to install or remove the plug 22C and the socket 32C in the process In the middle, the snap block 222C and the snap block 324C slide smoothly without jamming.

In this embodiment, the male end assembly 2C is provided with a plurality of metal sheets 21C, and the female end assembly 3C is provided with a plurality of pins 31C. The pins 31C are linearly arranged along the radial direction of the male end assembly 2C, and the metal sheets 21C are arranged in a one-to-one correspondence with the pins 31C. Certainly, in other embodiments, a plurality of pins 31C may also be provided on the male end component 2C, and a number of metal sheets 21C may be provided on the female end component 3 .

The metal sheet 21C includes a sliding groove 211C and a fixing portion 212C connected with the sliding groove 211C. When the male end assembly 2C and the female end assembly 3C are butted together, the pin 31C can slide in the sliding groove 211C. The fixing portion 212C is directly or indirectly fixed in the plug 22C, and the sliding groove 211C is used for electrical connection with the pin 31C; each metal sheet 21C can be arranged symmetrically with respect to the central axis of the socket 32C. Four, each metal sheet 21C and The sliding groove 211C extends in an arc shape. When the male end assembly 2C and the female end assembly 3C are rotated and engaged, the pin 31C can slide in the sliding groove 211C, thereby improving the reliability and stability of the electrical connection.

The male end assembly 2C has a male plug end cover 23C. The male plug end cover 23C is provided with first through holes 231C corresponding to the metal pieces 21C one-to-one. The metal pieces 21C are accommodated in the first through holes 231C. Among them, the male plug end cover 23C is arranged at the end of the plug, and there is a space in the plug, and the metal sheet 21C is arranged in this space. It is true that other components of the male end assembly 2C can also be arranged in this space; the male plug end cover The end face of 23C has a first through hole 231C, the shape of the first through hole 231C is the same as that of the metal sheet 21C, and a gap can be maintained between the inner wall of the first through hole 231C and the metal sheet 21C.

The receptacle assembly 3C further includes a cover plate 33C, the cover plate 33C is fixed in the socket 32C, the cover plate 33C is provided with a second through hole 331C corresponding to the pins 31C one-to-one, and the pins 31C pass through the second through holes 331C and the metal sheet 21C Electrical connection.

The fan also includes a grille (embodied in each figure), and the grille is detachably connected to the connecting rod 1C; wherein the grille is used to guide the wind, which can be realized by using the prior art.

Embodiment 4:

Please refer to FIG. 17 to FIG. 24 , which are floor fans according to an embodiment of the present invention.

As shown in FIGS. 17 and 18 , a floor fan includes a grill assembly 30F, an impeller 10F, a motor 20F and a support rod 50F. The impeller 10F is installed on the main shaft of the motor 20F, one end of the motor 20F is accommodated in the hub 11F of the impeller 10F, and the other end of the motor 20F is fixed inside the grille assembly 30F to form a fan head assembly. The grille assembly 30F is directly connected to one end of the support rod 50F. The connection method is not limited to detachable connection methods such as snap connection. After the fan head assembly is connected to the support rod 50F, the thickness of the fan head assembly is approximately the same as the diameter of the support rod 50F, so that the fan head assembly visually The two sides of the fan head are flush with the support rod 50F, which is convenient for the storage of the fan head assembly and the support rod 50F.

Specifically, the front and rear ends of the grill assembly 30F are vertical planes and are arranged in parallel. The grille assembly 30F includes a rear grille 31F and a matching front grille 40F. The rear grille 31F and the front grille 40F are snap-connected to form an area for accommodating the motor 20F. The motor 20F is connected to the rear grille 31F, and the motor 20F is accommodated in the hub 11F of the impeller 10F. Through a reasonable structural design, the motor 20F is arranged between the rear grille 31F and the hub 11F, which occupies less of the total fan head. At the same time, the snap connection of the front and rear grilles makes the fan head assembly easy to disassemble and easy to clean.

As shown in FIGS. 19 to 21 , the grille assembly 30F further includes a bracket 34F, the bracket 34F is located between the rear grille 31F and the motor 20F, the bracket 34F and the rear grille 31F are integrally formed or the bracket 34F is detachably connected to the rear grille 31F; the support rod 50F is detachably connected with the grille assembly 30F, and the support rod 50F can be connected with the rear grille 31F in the grille assembly 30F, and can also be detachably connected with the front grille 40F in the grille assembly 30F. Brackets 34F in grill assembly 30F are attached.

Specifically, as shown in FIG. 20 and FIG. 21 , the bracket 34 is provided with a motor fixing frame 342F, a mounting portion 341F, a connecting bar 343F connecting the motor fixing frame 342F and the mounting portion 341F, and the motor 20F is located in the motor fixing frame 342F, and the mounting portion 341F is detachably connected to the support rod 50F. The mounting portion 341F includes a mounting groove or a mounting protrusion, the support rod 50F is provided with a structure that cooperates with the mounting groove or the mounting protrusion, and the mounting portion 341F and the support rod 50F are clamped, screwed, or otherwise detachably connected. In the connection method, the bracket 34F plays the role of strengthening, stabilizing and preventing the motor from shaking.

As shown in Figures 19 and 20, the fan head assembly also includes a fixing plate 21F, the motor 20F is fixed on the bracket 34F, and the motor 20F and the bracket 34F are fastened by the fixing plate 21F, so as to prevent the motor 20F from shaking, and at the same time Also acts as a protective cover.

As shown in FIG. 20, the fan head assembly further includes a damping pad 22F, which is arranged between the motor 20F and the rear grille 31F, and the specific damping pad 22F is located between the rear grille 31F and the bracket 34F; The shock-absorbing pad 22F is a flexible material, preferably silica gel, which can reduce the vibration of the motor 20 .

As shown in FIGS. 18 and 19 , the fan head assembly further includes a nut 60F for locking the impeller 10F. Specifically, the impeller 10F is connected to the motor shaft of the motor 20F, and the end of the motor shaft is provided with a thread that cooperates with the nut 60F. Through the above structure, the impeller 10F can be detachably connected to the motor shaft, which is convenient for cleaning; preferably, refer to Fig. 20. The hub 11F of the impeller 10F is provided with double walls, and a number of reinforcing ribs 111F are arranged between the double walls.

As shown in FIG. 20 , the fan head assembly further includes a wind inner ring casing 33F, and both ends of the wind inner ring casing 33F are connected with a rear grille 31F and a front grille 40F. Specifically, the wind inner ring housing 33F is provided with an annular outer surface and two end surfaces located at both ends, and the two end surfaces are respectively connected to the front grille 40F and the rear grille 31F. Preferably, the wind inner ring casing 33F includes a wind inner ring upper casing and a wind inner ring bottom casing fixed on the wind inner ring upper casing, the wind inner ring upper casing is located near the rear grille 31F, and the wind inner ring upper casing is connected The rear grille 31F; the air inner ring bottom case is located near the front grille 40F, and the front grille 40F is connected to the air inner ring bottom case.

As shown in Figure 20, the fan head assembly also includes a cable cover 35F; the rear grille 31F is provided with a cable slot, and the cable cover 35F is matched with the cable slot to facilitate the routing of the floor fan. The quantity can be set according to actual needs.

As shown in FIGS. 19 and 20 , the fan head assembly further includes an operation panel 32F disposed on the outer surface of the grill assembly 30F, and a control unit disposed between the grill assembly 30F and the operation panel 32F, the operation panel 32F and the control unit In particular, the operation panel 32F is provided with display components and buttons, and the buttons are swipe buttons and/or point buttons.

As shown in Figures 22 to 24, in the floor fan shown in the embodiment of the present invention, the support rod 50F includes a fixed part 51F and a rotating part 52F, and the fixed part 51F and the rotating part 52F are pivotally connected. As shown in FIG. 22, the rotating part 52F is rotatable with respect to the fixed part 51F.

Preferably, referring to FIG. 22 , the support rod 50F includes a first rod body 53F and a second rod body 54F, and the first rod body 53F and the second rod body 54F are detachably connected. The rotating part 52F is located at the top of the first rod body 53F.

Further, referring to FIG. 23 , the floor fan further includes a chassis 55F, the chassis 55F is provided with a rotating structure, and the rotating structure is connected with the other end of the support rod 50F, specifically, the rotating structure is connected with the bottom of the second rod body 54F.

Preferably, referring to FIG. 23 , the chassis 55 further includes a receiving groove 551F, and the receiving groove 551F is used for receiving the first rod body 53F and the second rod body 54F.

In the floor fan shown in the present invention, the shock-absorbing pad 22F is fixed on the rear grille 31F, the bracket 34F is fixed on the rear grille 31F provided with the shock-absorbing pad 22F, the motor 20F is fixed on the bracket 34F through the fixing plate 21F, and the impeller 10F is fixed on the motor shaft of the motor 20F, and is locked by the nut 60F; one end of the wind inner ring housing 33 is fixed on the rear grille 31F, and the front grille 40F is fixed on the other end of the wind inner ring housing 33F. Panel 32F is fixed on the outer surface of grille assembly 30F to form a fan head assembly. On the basis of the above structure, the motor 20F is accommodated in the hub 11F, so that the structure of the fan head assembly is compact, and the space occupied by the grill assembly 30F is further reduced. The grill assembly 30F is detachably connected with the support rod 50F, so that the floor fan of the present invention occupies less space and is convenient for storage and transportation.

Claims

A wind wheel, characterized in that it comprises a hub and blades, the blades are evenly distributed on the outer surface of the hub; the thickness of the blades in a first section is equal to or greater than the thickness of the blades in a second section; The thickness of the blade in the second section is greater than the thickness of the blade in the third section;

Wherein, the first section is the cylindrical section at the root of the blade, the second section is the cylindrical section Sz at 30%-70% of the blade height, and the third section is the cylinder at the top of the blade shaped section.
The wind rotor according to claim 1, wherein the thickness of the blade in the first section to the thickness of the blade in the second section remains unchanged, and the thickness of the blade in the second section is constant The thickness of the blade at the third section gradually decreases.
The wind rotor according to claim 1, wherein the blade comprises a leading edge, a trailing edge, a suction surface and a pressure surface;

The blade is cut by a cylindrical section to form the original curved surface of the section. On the original curved surface of the section, the shortest curve between the leading edge and the trailing edge of the blade is the blade chord length b', and the suction surface is on the There is a maximum camber position on the original curved surface of the section, and the intersection point of the shortest distance curve from the maximum camber position to the blade chord length b' and the blade chord length b' is o';

The vertical line L1 is a straight line passing through the o' point and perpendicular to the rotor axis L2, and the projection plane is a plane passing through the rotor axis L2 and taking the vertical line L1 as the normal line; the original curved surface of the section is projected on the A plane cascade is formed on the projection surface;

On the plane cascade, the maximum inflection point of the projection of the suction surface is point P1, the projection of the blade chord length b' is the chord projection b, and from the P1 point to the chord projection b The intersection of the vertical line and the projection of the pressure surface is P2, and the connecting line between the points P1 and P2 is the maximum thickness c of the plane cascade.

From the first section to the third section, the maximum thickness c on the plane blade cascade gradually decreases, or remains unchanged and then gradually decreases.
A wind wheel as claimed in claim 3, characterized in that: the maximum thickness c of the planar blade cascade remains unchanged or decreases from the first section to the second section; it gradually decreases from the second section to the third section Small.
The wind rotor according to claim 4, wherein the angle between the chord projection b and the rotor axis L2 is β, and the angle β gradually increases from the first section to the third section. increase.
The wind rotor according to claim 5, wherein the β angle formed in the first section is β hub , the β angle formed in the third section is β th , and β th -β hub ≥15°.
The wind rotor according to claim 3, characterized in that: on the plane cascade, o is the projection of o' on the projection plane, and a is the chord projection of the blade in b. The distance from the projection point of the leading edge on the projection plane to the point o forms a hub and b hub on the first section, and the relationship between a hub and b hub is 0.3≤a hub /b hub ≤0.5.
A wind rotor according to claim 7, characterized in that: a Sz and b Sz are formed in the second section, and the relationship between a Sz and b Sz is 0.4≤a Sz /b Sz ≤0.5.
A wind rotor according to claim 8, characterized in that: a th and b th are formed on the third section, and the relationship between a th and b th is 0.45≤a th /b th ≤0.5.
A wind wheel as claimed in claim 9, characterized in that: a hub /b hub ≤a Sz /b Sz ≤a th /b th .
A fan, characterized in that: the fan comprises a wind wheel according to any one of claims 1-10.
A fan, characterized in that it comprises at least two connecting rods connected to each other, one end of the connecting rod is a male end assembly, the other end is a female end assembly that can be butted with the male end assembly, the connecting rod The side close to the male end assembly is provided with a button, and the interconnected connecting rods are separated by pressing the button.
The fan of claim 12, wherein the male end assembly further comprises a plug and an elastic member, and the elastic member abuts between the plug and the button.
14. The fan of claim 13, wherein the button comprises a protruding clip, the female end assembly has a clip slot matched with the clip, the male end assembly and the The female end assembly is snap-fastened through the cooperation of the snap-fit piece and the snap-fit slot.
The fan according to claim 14, wherein the clip includes a guide surface and a limit curved surface, the guide surface gradually protrudes in a direction close to the upper end of the button, and the limit curved surface is used for connecting with the upper end of the button. The card slots are mutually limited.
14. The fan of claim 13, wherein the plug comprises a reinforcing rib on the outer surface of the plug and a groove for accommodating the button.
The fan according to claim 16, wherein the reinforcing rib is connected with the root surface of the plug, and the connection with the root surface of the plug is provided with a chamfer.
The fan of claim 13, wherein the male end assembly further comprises:

a first pin holder, accommodated in the plug;

a male pin, fixed on the first pin bracket, and used for electrical connection with the female end assembly; and

A fixing piece, one end of which is inserted and fixed with the plug, and the fixing piece has a through hole through which the button passes.
The fan according to claim 13, wherein the female end assembly comprises a socket and a female end terminal assembly disposed in the socket, the female end terminal assembly is used for electrical connection with the male end assembly, and the The socket is provided with an accommodating cavity capable of accommodating the plug, so as to realize the insertion of the female end assembly and the male end assembly.
The fan of claim 19, wherein the female terminal assembly comprises female pins and a second pin bracket for fixing the female pins, and the second pin bracket is fixed to the socket Inside.
The fan of claim 12, wherein the fan further comprises a grill, the grill is detachably connected with the connecting rod.
A fan, characterized in that it comprises at least two connecting rods connected to each other, one end of the connecting rod is a male end assembly, the other end is a female end assembly that can be butted with the male end assembly, the male end assembly One of the component and the female component is provided with a pin, and the other is provided with a metal sheet corresponding to the pin, so that the male component and the female component are electrically connected.
The fan of claim 22, wherein the male end assembly includes a plug, the female end assembly includes a socket, the socket has a socket cavity into which the plug is inserted, and the plug passes through the socket Rotate to achieve snap-fit connection.
The fan according to claim 23, wherein the plug comprises a guide block and a locking block arranged at intervals, and there is a locking space between the guide block and the locking block.
The fan of claim 24, wherein the socket has a guide groove recessed relative to an inner wall of the socket, and the guide groove includes a first through hole, a second through hole and a connection with the first through hole. The hole and the snap block of the second through hole.
26. The fan of claim 25, wherein the guide block is accommodated in the first through hole, the snap block is accommodated in the second through hole, and the snap block is accommodated in the card within the connection space.
The fan of claim 22, wherein the male end assembly is provided with a plurality of the metal sheets, and the female end assembly is provided with a plurality of the pins.
The fan according to claim 27, wherein the metal sheet comprises a sliding groove and a fixing part connected with the sliding groove, and when the male end assembly and the female end assembly are butted, the pin can slide in the sliding groove.
The fan of claim 27, wherein the male end assembly has a male plug end cover, and the male plug end cover is provided with a first through hole corresponding to the metal sheet one-to-one, and the metal sheet accommodated in the first through hole.
The fan of claim 27, wherein the female end assembly further comprises a cover plate, the cover plate is provided with second through holes corresponding to the pins one-to-one, and the pins pass through the The second through hole is electrically connected to the metal sheet.
The fan of claim 22, wherein the fan further comprises a grill, the grill is detachably connected to the connecting rod.
A floor fan is characterized by comprising: a grill assembly, an impeller, a motor, and a support rod;

One end of the motor is accommodated in the hub of the impeller, and the other end of the motor is fixed inside the grille component, and the grille component is directly connected to one end of the support rod.
The floor fan according to claim 32, wherein the front and rear ends of the grill assembly are vertical planes and are arranged in parallel.
The floor fan according to claim 32, wherein the grille assembly comprises a rear grille and a front grille matched with the rear grille, and the rear grille is connected with the front grille by a snap connection.
The floor fan according to claim 34, further comprising a vibration damping pad, the vibration damping pad being arranged between the motor and the rear grille.
The floor fan according to claim 34, wherein the grille assembly further comprises a bracket, the motor is fixed on the bracket, the bracket and the rear grille are integrally formed or the bracket is detachable connected to the rear grille.
The floor fan of claim 32, further comprising an operation panel disposed on the outer surface of the grill assembly, and a control unit disposed between the grill assembly and the operation panel.
The floor fan according to claim 32, wherein the hub of the impeller is double-walled, and a plurality of reinforcing ribs are arranged between the double-layered walls.
The floor fan of claim 32, wherein the support rod is detachably connected to the grill assembly.
The floor fan of claim 39, wherein the support rod comprises a fixed part and a rotating part, and the fixed part and the rotating part are pivotally connected.
The floor fan of claim 39, wherein the support rod comprises a first rod body and a second rod body, and the first rod body and the second rod body are detachably connected.
The floor fan of claim 41, further comprising a chassis, the chassis is provided with a rotating structure, and the rotating structure is connected to the other end of the support rod.
The floor fan according to claim 42, wherein the chassis further comprises a receiving groove, and the receiving groove is used for receiving the first rod body and the second rod body.