Vector air outlet electric fan

Abstract

The utility model relates to the technical field of electric fans, in particular to a vector air outlet electric fan which comprises a shell, an air duct is arranged in the shell, the two ends of the air duct are arranged in a penetrating mode, fan blades are arranged in the air duct, and a vector fan cover is arranged on the air outlet side of the air duct. The vector fan cover comprises a vector air outlet exposed on the outer side of the shell and a vector air inlet connected with an air outlet of the air duct, the wall body of the vector fan cover is in an arc shape, the inner diameter of the vector fan cover is gradually reduced from the vector air inlet side to the vector air outlet side, and the shell is provided with an arc face matched with the outer wall of the vector fan cover and wraps part of the vector fan cover all the time. The cambered surface of the shell is in sliding fit with the outer wall of the vector fan cover; the vector fan cover is provided with a rotating end rotationally connected with the shell, and the vector fan cover is provided with a rotatable space between the shell and the air outlet of the air duct. When the vector fan cover rotates around the rotating end, the direction of the air opening of the vector air outlet changes. The fan has the advantage that a user can conveniently adjust the air outlet angle of the fan.

Description

Technical Field

[0001] The utility model relates to the technical field of electric fans, in particular to a vector-blowing electric fan. Background Art

[0002] At present, a rotary blade fan refers to a fan with an air guide blade, which is arranged in front of the fan blade. The air guide blades of some rotary blade fans are driven to rotate by an independent reduction motor. When the air guide blades rotate, the wind generated by the fan blades can be blown out at an offset angle, thereby expanding the air supply range. For example, Chinese patent application number 202220180143.5 discloses a rotary blade fan with an adjustable air supply angle, which blows out the wind generated by the fan blades at an offset angle by rotating the air guide blades in front of the fan blades. The air guide blades are driven to rotate by a reducer, and the user needs to wait for the air guide blades to rotate to the appropriate position each time, which is more troublesome. Utility Model Content

[0003] In order to solve the deficiencies in the prior art, a vector-discharge electric fan is provided which allows the user to adjust the fan's air outlet angle easily.

[0004] The utility model is implemented by the following technical scheme: a vector air-outlet electric fan, comprising a shell, a duct extending in a straight direction is provided in the shell, the two ends of the duct are through-set and fan blades are provided in the duct, a vector wind cover is provided on the air outlet side of the duct, the vector wind cover comprises a vector air outlet exposed on the outside of the shell and a vector air inlet connected to the air outlet of the duct, the wall of the vector wind cover is arc-shaped and the inner diameter gradually decreases from the vector air inlet side to the vector air outlet side, the shell has an arc surface that matches the outer wall of the vector wind cover and always wraps part of the vector wind cover, the arc surface of the shell slides with the outer wall of the vector wind cover; the vector wind cover is provided with a rotating end rotatably connected to the shell, and the vector wind cover has a rotatable space between the shell and the air outlet of the duct; when the vector wind cover rotates around the rotating end, the air outlet direction of the vector air outlet changes.

[0005] Among them, the wall of the vector wind hood is arc-shaped and the shell has an arc surface that matches the outer wall of the vector wind hood. In order to ensure that the vector wind hood has a better rotational adaptability with the shell during rotation, the arc shape and the arc surface here have a spherical arc.

[0006] Among them, the vector wind hood has a rotatable space between the shell and the air outlet of the air duct, which means that the vector air inlet end face of the vector wind hood is not in contact with the air outlet end face of the air duct, or is in point contact or partial surface contact, ensuring that the vector wind hood has rotation space.

[0007] The housing has a curved surface that mates with the outer wall of the vector hood and permanently encloses a portion of the vector hood, ensuring that air is uniformly blown out from the vector outlet of the vector hood. The method of permanently enclosing the portion of the vector hood can be achieved by adjusting the size of the vector hood so that when rotated to a certain angle, the vector hood abuts the end face of the air duct outlet, preventing further rotation. Alternatively, a protrusion can be provided on the inner wall of the housing so that when rotated to a certain angle, the vector hood abuts the protrusion and prevents further rotation.

[0008] During use, the user can turn the vector wind hood to rotate the vector wind hood, so that the vector air outlet angle of the vector wind hood changes. The existing wind guide rotor blades mainly rely on the tilt angle of the blades to achieve different blowing angles, and it is difficult for the user to intuitively observe the angle direction of the blades. With the vector wind hood of this solution, the user can intuitively see the angle direction of the vector air outlet of the vector wind hood, which makes it easier for the user to adjust the air outlet angle. At the same time, the vector wind hood is completely different in shape from the existing wind guide rotor blades. The air outlet of the vector wind hood is more concentrated, and the blowing effect is better.

[0009] Preferably, the end face of the vector air inlet includes a first contact surface and a second contact surface that can contact the end face of the air duct outlet, the first contact surface and the second contact surface are arranged at an angle, and the first contact surface and the second contact surface are not parallel to the end face of the vector air outlet; when the first contact surface or the second contact surface contacts the end face of the air duct outlet, the vector wind cover rotates to the extreme position.

[0010] The first contact surface and the second contact surface contact the end surface of the air duct outlet to limit the rotation of the vector wind cover to the limit position. Since the vector wind cover is hollow and the wall is arc-shaped, the first contact surface and the second contact surface are approximately annular surfaces.

[0011] Preferably, the rotating end is arranged at two connecting positions of the first contact surface and the second contact surface, and the first contact surface and the second contact surface are symmetrically arranged with the line connecting the two rotating ends as the symmetry axis.

[0012] The first contact surface and the second contact surface are symmetrically arranged so that the extreme positions to which the vector wind shield rotates are the same.

[0013] Preferably, a first rotating groove is provided on the wall of the air duct outlet, which penetrates along its own radial direction and opens to the side of the vector wind hood, and the rotating end is provided with a rotating shaft extending along the radial direction. The rotating shaft is partially located in the first rotating groove and is rotatably connected to the first rotating groove.

[0014] By setting a first rotating groove on the wall of the air duct outlet, and the rotating shaft portion is embedded in the first rotating groove and rotatably connected to the first rotating groove, the first contact surface or the second contact surface can be completely in contact and cooperate with the end face of the air duct outlet when the vector wind cover rotates to the extreme position.

[0015] Preferably, the housing is provided with a second rotation groove extending in a radial direction, and the rotation shaft extends into the second rotation groove and is rotationally connected to the second rotation groove.

[0016] The shell is provided with a second rotation slot to realize the rotation connection between the vector wind cover and the shell.

[0017] Preferably, the air duct includes a first grille and a second grille in sequence from the fan blade side to the air outlet side of the air duct, and the bending direction of the guide vanes of the first grille is opposite to the bending direction of the guide vanes of the second grille; the guide vanes of the first grille and the guide vanes of the second grille are staggered in the axial direction of the air duct.

[0018] By providing a first grille and a second grille, and staggering the guide vanes of the first grille and the guide vanes of the second grille in the axial direction of the air duct, turbulence is eliminated and the wind is more concentrated. The first grille and the second grille are interconnected to form a part of the air duct.

[0019] Preferably, the second grille includes a front grille located on the air outlet side of the air duct and a rear grille close to the first grille, the guide vanes of the front grille and the rear grille abut against each other and are overlapped in the axial direction of the air duct; the circumferential wall of the front grille is concave from the outside to the inside, and the inner diameter of the front grille gradually decreases along the air outlet direction; the outer diameter of the front grille at the air outlet is the same as the outer diameter at the vector air inlet.

[0020] Setting the second grille into two separate front grilles and rear grilles can facilitate processing, thereby facilitating the processing of the front grille, so that the inner diameter of the air outlet of the air duct with the front grille gradually decreases from the inside to the outside along the axial direction, so that the wind is blown out more concentratedly; at the same time, the outer diameter of the air outlet of the front grille is the same as the outer diameter of the vector air inlet, so that when the two are connected, the outer walls of the two are smoothly transitioned, making the air outlet smoother.

[0021] Preferably, a hemisphere extending into the vector wind shield is provided at the center of the front grille.

[0022] By providing the hemisphere, a smaller channel is formed between the hemisphere and the vector wind shield, thereby increasing the wind speed and making the wind direction more concentrated.

[0023] Preferably, a buckle hole is provided on the outer wall of the shell, and the buckle hole is used to pass the waist bag line.

[0024] By providing the hanging buckle hole, a waist bag cord can be passed through so that the entire fan can be hung on the user's waist, which is convenient to carry.

[0025] Compared with the prior art, the utility model has the advantage of being convenient for users to adjust the air outlet angle of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the utility model;

[0027] Figure 2 for Figure 1 sectional view of

[0028] Figure 3 Schematic diagram of the structure of the outside of the air duct;

[0029] Figure 4 This is the exploded view of the air duct combination;

[0030] Figure 5 It is the side view of the vector wind shield;

[0031] Figure 6 It is an enlarged view of the arc surface of the shell;

[0032] Figure 7 A top view of the air duct.

[0033] Figure numbers: 1. Shell; 11. Top cover; 12. Hanging hole; 13. Bottom plate; 14. Battery; 2. Vector wind hood; 21. Vector air outlet; 22. Vector air inlet; 23. First contact surface; 24. Second contact surface; 3. Second grille; 31. Front grille; 32. Rear grille; 33. Hemisphere; 4. First grille; 5. Fan blades; 51. Motor assembly; 6. Dust cover; 7. Rotating shaft; 8. Air duct; 91. First rotating slot; 92. Second rotating slot. DETAILED DESCRIPTION

[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0035] like Figure 1 and Figure 2 As shown, this embodiment discloses a vectored air fan, comprising a housing 1, which is composed of a top cover 11, side housings, and a bottom plate 13. A hook hole 12 is provided on the outer wall of the side housing for attaching a belt-pack cord. Housing 1 houses a battery 14, a circuit board (not shown), and an air duct assembly.

[0036] like Figures 1 to 4As shown, the housing 1 is provided with a fan 8, a first grille 4, and a second grille 3, arranged from bottom to top. The fan 8, first grille 4, and second grille 3 are all hollow and coaxially arranged to form an air duct extending in the vertical direction. The fan 8, first grille 4, and second grille 3 are fixed to each other by screws. A fan blade 5 is provided within the fan 8 and is located at the lower end of the first grille 4. The fan blade 5 and the first grille 4 are rotatably connected via a rotor shaft and bearings. A motor assembly 51 is provided at the center of the fan blade 5. A dust cover 6 is provided on the bottom plate 13, and the air duct is coaxially arranged with the dust cover 6.

[0037] like Figure 4 and Figure 7 As shown, the second grille 3 includes a rear grille 32 and a front grille 31 from bottom to top. The front grille 31 is located at the upper end of the air duct (i.e., the air outlet of the air duct). The front grille 31 and the rear grille 32 are separate split structures. The front grille 31 and the rear grille 32 are arranged in abutment with each other up and down, and the guide vanes of the front grille 31 and the rear grille 32 are arranged to overlap in the vertical direction (axial direction of the air duct). The first grille 4 is located below the rear grille 32. The guide vanes of the first grille 4 are bent in the opposite direction to the guide vanes of the front grille 31 and the rear grille 32, so that they are staggered in the vertical direction. The aperture of the front grille 31 gradually decreases from bottom to top, and the wall of the front grille 31 is concave from outside to inside. The outer diameter of the front grille 31 at the air outlet is the same as the outer diameter at the vector air inlet 22.

[0038] like Figures 2 to 6 As shown, the upper end of the top cover 11 is provided with a through hole running through from top to bottom corresponding to the air outlet of the air duct, and a vector wind hood 2 is rotatably connected in the through hole. The vector wind hood 2 is set to pass through from top to bottom, with the upper end being the vector air outlet 21 and the lower end being the vector air inlet 22. The vector air inlet 22 is connected to the air outlet end of the air duct. The wall of the vector wind hood 2 is a part of a sphere, and is an arc convex outward. The inner diameter of the vector wind hood 2 gradually decreases from the side of the vector air inlet 22 to the side of the vector air outlet 21. The top cover 11 is provided with an arc surface that is adapted to the outer wall of the vector wind hood 2, and the arc surface is also an arc surface of a part of a sphere. The outer wall of the vector wind hood 2 slides with the arc surface of the top cover 11, and the top cover 11 always wraps part of the vector wind hood 2, and the vector air outlet 21 of the vector wind hood 2 is exposed on the outside of the top cover 11. A hemisphere 33 extending into the interior of the vector wind hood 2 is provided at the center of the front grille 31.

[0039] A rotating shaft 7 extending in a radial direction is provided on opposite sides of the lower end of the vector wind hood 2, and a first rotating groove 91 penetrating in a radial direction and opening to the side of the vector wind hood is provided on the end wall of the front end grille 31. The shell 1 is provided with a second rotating groove 92 extending in a radial direction, and the second rotating groove 92 is open downward. The rotating shaft 7 extends into the first rotating groove 91 and the second rotating groove 92 and is rotatably connected with the first rotating groove 91 and the second rotating groove 92.

[0040] The end surface of the vector air inlet 22 of the vector wind shield 2 includes a first contact surface 23 and a second contact surface 24. The first contact surface 23 and the second contact surface 24 are arranged non-parallel to the end surface of the vector air outlet 21. The rotation axis 7 is arranged at the connection between the first contact surface 23 and the second contact surface 24. The first contact surface 23 and the second contact surface 24 are symmetrically arranged with the line connecting the two rotation axes 7 as the symmetry axis.

[0041] During use, the user can move the vector hood 2, causing it to rotate about the rotation axis 7, thereby adjusting the direction of the airflow. The friction between the rotation axis 7 and the first rotation slot 91 and the second rotation slot 92 can be increased to prevent the vector hood 2 from rotating further after a certain angle. When the first contact surface 23 or the second contact surface 24 contacts the end surface of the front grille 31 (i.e., the air outlet end surface of the air duct), the vector hood 2 is at its extreme rotational position.

Claims

1. A vectored air fan, comprising a housing, an air duct extending in a straight line within the housing, the air duct having two ends connected thereto and fan blades disposed therein, characterized in that: A vector wind hood is provided on the air outlet side of the air duct, and the vector wind hood includes a vector air outlet exposed on the outside of the shell and a vector air inlet connected to the air outlet of the air duct. The wall of the vector wind hood is arc-shaped and the inner diameter gradually decreases from the vector air inlet side to the vector air outlet side. The shell has an arc surface that matches the outer wall of the vector wind hood and always wraps part of the vector wind hood. The arc surface of the shell slides with the outer wall of the vector wind hood; the vector wind hood is provided with a rotating end rotatably connected to the shell, and the vector wind hood has a rotatable space between the shell and the air outlet of the air duct; when the vector wind hood rotates around the rotating end, the air outlet direction of the vector air outlet changes.

2. The vector air outlet fan according to claim 1, characterized in that: The end face of the vector air inlet includes a first contact surface and a second contact surface that can contact the end face of the air duct outlet, the first contact surface and the second contact surface are arranged at an angle, and the first contact surface and the second contact surface are not parallel to the end face of the vector air outlet; when the first contact surface or the second contact surface contacts the end face of the air duct outlet, the vector wind cover rotates to the extreme position.

3. The vectored air outlet fan according to claim 2, characterized in that: The rotating end is arranged at two connecting positions of the first contact surface and the second contact surface, and the first contact surface and the second contact surface are symmetrically arranged with the line connecting the two rotating ends as the symmetry axis.

4. The vectored air outlet fan according to claim 1, characterized in that: A first rotating groove is provided on the wall of the air duct outlet, which penetrates along its own radial direction and opens to the side of the vector wind cover. The rotating end is provided with a rotating shaft extending along the radial direction. The rotating shaft is partially located in the first rotating groove and is rotatably connected to the first rotating groove.

5. The vectored air outlet fan according to claim 4, characterized in that: The housing is provided with a second rotation groove extending in a radial direction, and the rotation shaft extends into the second rotation groove and is rotationally connected to the second rotation groove.

6. The vectored air outlet fan according to claim 1, characterized in that: The air duct includes a first grille and a second grille in sequence from the fan blade side to the air outlet side of the air duct, and the bending direction of the guide vanes of the first grille is opposite to the bending direction of the guide vanes of the second grille; the guide vanes of the first grille and the guide vanes of the second grille are staggered in the axial direction of the air duct.

7. The vectored air outlet fan according to claim 6, characterized in that: The second grille includes a front grille located on the air outlet side of the air duct and a rear grille close to the first grille. The guide vanes of the front grille and the rear grille abut against each other and are overlapped in the axial direction of the air duct; the circumferential wall of the front grille is concave from the outside to the inside, and the inner diameter of the front grille gradually decreases along the air outlet direction; the outer diameter of the front grille at the air outlet is the same as the outer diameter at the vector air inlet.

8. The vectored air outlet fan according to claim 7, characterized in that: A hemisphere extending into the vector wind shield is provided at the center of the front grille.

9. The vectored air outlet fan according to any one of claims 1 to 8, characterized in that: A buckle hole is provided on the outer wall of the shell, and the buckle hole is used for threading the waist bag line.

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