Blower nozzle with automatic swing air supply function

Abstract

The utility model discloses a hair drier air nozzle with automatic swing air supply function, including the casing, the casing includes the large diameter section and small diameter section along the axial direction, the casing is equipped with the bung to the axial one end of corresponding large diameter section, is equipped with the air inlet on the bung, the bung can guide the wind that blows all by the air inlet enters to the casing, the casing is equipped with the air outlet to the axial other end of corresponding small diameter section, the casing is rotatably connected with the impeller perpendicular to the casing axis in, the impeller is divided into two symmetrical radial half side area by the diameter of its cross section boundary line, the air inlet air inlet surface only passes through one side radial half side area, the casing is equipped with the swing vane of axis parallel to the impeller, is equipped with the crank connecting rod assembly of can drive swing vane swing between the swing vane and the impeller. The utility model has the advantages of can concentrate air supply, to guarantee the automatic swing type air outlet effect.

Description

Technical Field

[0001] This utility model relates to the field of nozzle technology, specifically a hair dryer nozzle with an automatic oscillating air delivery function. Background Technology

[0002] Conventional hair dryers have a straight-out nozzle, which blows air in one direction and covers a small area. When users need to increase the airflow coverage, they need to manually shake the hair dryer to increase the airflow coverage area. Over time, this makes it quite strenuous for users to use.

[0003] Chinese patent application No. 201420511507.9 discloses an automatic oscillating nozzle for a hair dryer and a hair dryer including the nozzle, comprising a housing adapted to engage with the air outlet of the hair dryer; an oscillating fan blade located in the housing and at the air outlet of the nozzle; an actuation component located in the housing and adapted to be driven by the air blown out by the hair dryer; and a transmission component located in the housing and connected to the actuation component and the fan blade; the actuation component includes a fan wheel fixed in the housing.

[0004] In the above technical solution, the air is concentrated and blown towards the wind wheel through the casing, and a portion of the wind force is converted into power for the oscillation of the blades by the transmission component to achieve the purpose of automatic oscillating air outlet. However, in the above technical solution, since the air transmitted to the air inlet of the casing completely covers the surface of the wind wheel, part of the wind force used to drive the wind wheel to rotate and drive the blades to oscillate is affected by another part of the wind force, which obstructs the driving wind force and affects the oscillating air outlet effect, resulting in poor performance. Utility Model Content

[0005] The purpose of this invention is to provide a blower nozzle with an automatic oscillating air supply function that can concentrate air supply to ensure an automatic oscillating air supply effect.

[0006] To achieve the above objectives, this utility model discloses a blower nozzle with an automatic oscillating air supply function, comprising a housing, the housing including a large-diameter section and a small-diameter section along the axial direction, a plug provided at one axial end of the housing corresponding to the large-diameter section, the plug having an air inlet, the plug guiding all the blown air into the housing through the air inlet, the housing having an air outlet at the other axial end corresponding to the small-diameter section, an impeller rotatably connected inside the housing perpendicular to the housing axis, the impeller being divided into two symmetrical radial half-regions by the diameter of its cross-section, the air inlet surface of the air inlet only passing through one radial half-region, the housing having a swaying blade with an axis parallel to the impeller, and a crank-connecting rod assembly capable of driving the swaying blade between the swaying blade and the impeller.

[0007] The air blown out by the blower enters through the air inlet located in the large diameter section, flows through the impeller after entering the housing, and gathers at the swing blades before flowing out from the air outlet. Since the air inlet is directly opposite the radial half area on the impeller, it drives the impeller to rotate in a fixed direction, increasing the impeller's airflow effect. This better drives the crank connecting rod assembly to swing the swing blades located at the air outlet, thereby causing the air gathered at the swing blades to be affected by the swing of the blades, resulting in automatic swing-type air delivery.

[0008] This invention, by setting a large-diameter section and a small-diameter section along the axial direction of the housing, and by ensuring that the air inlet surface only passes through one radial half-area of ​​the impeller, allows the air blown by the blower to be concentrated towards the radial half-area of ​​the impeller and converge inside the housing after flowing through the impeller. This avoids mutual interference between wind forces completely covering the impeller surface, allowing all wind energy to be converted into mechanical energy, thereby improving the utilization rate of wind power. It also enables automatic oscillating air delivery, ensuring the oscillating air delivery effect at the air outlet. This invention has the advantage of being able to concentrate air delivery to ensure the automatic oscillating air delivery effect.

[0009] The impeller is any paddle wheel structure with blades located on the outer surface and arranged in a ring array, as described in the prior art. The air inlet is positioned directly opposite the impeller blades on one side of the dividing line, thereby preventing the impeller on the opposite side from being affected by wind and hindering its rotation.

[0010] Preferably, the air inlet has a runway-shaped opening formed by a semi-circular arc and a straight line, and the cover is a conical panel-shaped structure that is recessed inward from the outer edge to the air inlet.

[0011] By designing the shape of the air inlet and making the side of the plug facing the air outlet of the blower a cone, the air force is concentrated along the cone and enters the housing from the air inlet, thereby increasing the force of the air force on the impeller.

[0012] Preferably, a transition section is provided between the large-diameter section and the small-diameter section.

[0013] After the air enters the housing through the air inlet located on the cover, the airflow flowing axially inside the housing is concentrated because the inner diameter of the transition section and the small diameter section is smaller than that of the large diameter section, thus achieving the effect of concentrating the air blown out by the blower.

[0014] When the cross-sectional shape of the smaller diameter section is the same as that of the larger diameter section, the outer circular surface of the transition section is a conical structure; when the cross-sectional shape of the smaller diameter section is the same as that of the air inlet, the outer circular surface of the transition section is a symmetrical arc surface structure.

[0015] Preferably, the width of the air inlet is greater than the axial length of the impeller, and the shape of the air outlet is the same as the shape of the air inlet.

[0016] By increasing the diameter of the air inlet, the airflow velocity is reduced while the torque is increased, ensuring the rotation effect of the impeller and increasing the area of ​​the airflow blowing onto the blades of the impeller, thereby improving the stress on the impeller.

[0017] Preferably, the inner wall of the small-diameter section is rotatably connected to a swing shaft, which is parallel to the rotation axis of the impeller. A swing arm extending towards the impeller is fixedly provided on the outer circular surface of the swing shaft. A central guide plate that connects both sides of the swing arm is fixedly provided on the swing shaft. The central guide plate, the swing shaft, and the swing arm are located in the same plane. Lateral guide plates are symmetrically provided on both sides of the thickness direction of the central guide plate. The lateral guide plates are fixed on the swing arm. The lateral guide plates and the central guide plate together form the swing blade.

[0018] The impeller and the oscillating blades are respectively placed in the large diameter section and the small diameter section, so that the air flowing through the impeller converges at the small diameter section along the transition section, and the oscillating blades oscillate to deliver the air, thereby improving the air outlet effect.

[0019] Preferably, the distance between the two side guide vanes at the end away from the impeller is smaller than the distance at the end closer to the impeller.

[0020] By setting the spacing between the side guide vanes, the blades are made to flare outwards from the end furthest from the impeller to the end closest to the impeller, thereby collecting the airflow passing through the impeller and concentrating the airflow for delivery, thus further improving the air delivery effect.

[0021] Preferably, the swing arm is located at the center of the housing, and a connecting ring is provided at one end of the swing arm near the impeller.

[0022] By using a connecting ring to connect the crank-connecting rod assembly, the structural strength at the hinge point can be improved compared to directly hinged to the tail of the swing arm, making it suitable for high-frequency oscillation operation.

[0023] Preferably, the crank connecting rod assembly includes an eccentric ring eccentrically disposed on the impeller and a connecting rod hinged between the eccentric ring and the connecting ring.

[0024] Using the distance between the center of the eccentric ring shaft and the center of the connecting ring shaft as a crank, and with the connecting rod, the power transmission to the oscillating blades is realized, transforming the circumferential rotation of the impeller into the oscillation of the oscillating blades, thus realizing automatic oscillating air supply.

[0025] Preferably, the connecting rod is rotatably connected to two ends along its length, and the rotatable columns are respectively embedded in the eccentric ring and the connecting ring.

[0026] By using a rotating column that can rotate relative to the connecting rod in combination with an eccentric ring and a connecting ring, the traditional method of hinged connection between the connecting rod and the eccentric ring and connecting ring via a rotating shaft is used, thereby improving the structural strength of the hinge joints at both ends of the connecting rod.

[0027] Preferably, the diameter of the eccentric ring is smaller than the length of the blades on the impeller, thereby reducing the influence of the eccentric ring on the wind-affected area of ​​the impeller. When the wind from the air inlet blows directly onto the blades, the wind force drives the impeller to rotate. When the wind from the air inlet blows directly onto the eccentric ring, the impeller continues to rotate due to inertia. When the eccentric ring passes the air inlet, the wind from the air inlet blows directly onto the back side of the eccentric ring, driving the impeller to continue rotating in the same way.

[0028] This invention enables the air blown by the hair dryer to be concentrated on the radial half of the impeller and to converge inside the housing after flowing through the impeller, avoiding mutual interference between the wind forces completely covering the impeller surface. It has the advantage of concentrated air delivery to ensure the automatic oscillating air outlet effect. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of one structure of the present utility model.

[0030] Figure 2 This is a schematic diagram of the back side structure of this utility model.

[0031] Figure 3 This is a three-dimensional sectional view of the present invention.

[0032] Figure 4 This is a schematic diagram of the exploded structure of this utility model.

[0033] Figure 5 This is an exploded structural diagram of the impeller and blades of this utility model.

[0034] Figure 6 This is a schematic diagram of the structure of the swing blade of this utility model.

[0035] Figure 7 This is a cross-sectional view of the shell of this utility model.

[0036] Figure 8 This is a schematic diagram of the radial half-side region in this utility model.

[0037] In the diagram: 11. Shell; 111. Large diameter section; 112. Transition section; 113. Small diameter section; 12. Empty shell; 13. Cover; 14. Air inlet; 15. Air outlet; 16. Impeller; 161. Blade; 1611. Beveled chamfer; 162. Eccentric ring; 163. First rotating column; 17. Rotating shaft; 18. Reinforcing rib; 19. Oscillating blade; 20. Oscillating shaft; 21. Oscillating arm; 22. Connecting ring; 221. Annular chamfer; 23. Central guide plate; 24. Side guide plate; 241. Parallel section; 242. Expansion section; 28. Annular seat; 29. ​​Second rotating column; 30. Connecting rod; 31. Third rotating column; 32. Fourth rotating column. Detailed Implementation

[0038] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0039] Depend on Figure 1 As shown, this embodiment discloses a hair dryer nozzle with an automatic oscillating air supply function, comprising a housing 11 composed of two symmetrically arranged hollow shells 12. The cross-sectional shape of the housing 11 is determined by the shape of the two hollow shells 12 combined together. Figure 7 As shown, when the cross-sectional shape of the empty shell 12 is semi-circular, the cross-sectional shape of the shell 11 is a full circle; when the cross-sectional shape of the empty shell 12 is other shapes, the cross-sectional shape of the shell 11 is the combined shape.

[0040] The housing 11 includes a large-diameter section 111, a small-diameter section 113, and a transition section 112 connecting the large-diameter section 111 and the small-diameter section 113 along the axial direction. Figure 2 As shown, a plug 13 is provided at one axial end of the housing 11 corresponding to the large diameter section 111. An air inlet 14 is provided on the plug 13. The plug 13 is a conical plate-shaped structure that is recessed inward from its outer edge to the air inlet 14. When the air enters the housing 11 from the air inlet 14 on the plug 13, the air flowing axially inside the housing 11 is gathered because the inner diameter of the transition section 112 and the small diameter section 113 is smaller than that of the large diameter section 111. This gathers the air blown out by the blower. The opening shape of the air inlet 14 is a racetrack shape surrounded by a semi-circular arc and a straight line. An air outlet 15 is provided at the other axial end of the housing 11 corresponding to the small diameter section 113. The shape of the air outlet 15 is the same as that of the air inlet 14.

[0041] Depend on Figure 3As shown, the air inlet 14 is located on the cover 13 near the edge of the cover 13. An impeller 16, perpendicular to the axis of the housing 11, is rotatably connected inside the housing 11. The impeller 16 is located inside the housing 11 corresponding to the air inlet 14. A ring-shaped array of blades 161 is fixedly arranged on the outer surface of the impeller 16. One end of each blade 161 near the inner wall of the large-diameter section 111 has a chamfered edge 1611. The width of the air inlet 14 is greater than the axial length of the impeller 16. A first rotating column 163 is coaxially and tightly fitted inside the impeller 16. The first rotating column 163 is rotatably connected to the inner wall of the large-diameter section 111 of the housing 11 via a rotating shaft 17. Figure 7 As shown, a reinforcing rib 18 is provided between the outer surface of the rotating shaft 17 and the axial end face of the first rotating column 163, thereby ensuring the structural strength of the impeller 16 during the suspended rotation process within the housing 11.

[0042] The upper edge of the air inlet 14 is at the same height as the rotating shaft 17, by Figure 8 As shown, the impeller 16 divides the blades 161 arranged in a ring array into symmetrical radial half-regions α and β with the rotation axis 17 as the dividing line. The radial half-region α located on the lower side is between the upper edge and the lower edge of the air inlet 14. The air inlet surface of the air inlet 14 only passes through the radial half-region α, thereby driving the impeller 16 to rotate in a fixed direction, so that all the wind energy is converted into the mechanical energy of the impeller 16.

[0043] The housing 11 is provided with a swing blade 19 whose axis is parallel to the impeller 16, and a crank connecting rod assembly that can drive the swing blade 19 to swing is provided between the swing blade 19 and the impeller 16.

[0044] Depend on Figure 4 , Figure 5 As shown, the oscillating blade 19 includes an oscillating shaft 20 rotatably connected to the inner wall of the small diameter section 113, an oscillating arm 21 fixedly disposed on the outer circular surface of the oscillating shaft 20, a central guide plate 23, and a side guide plate 24. The oscillating shaft 20 is parallel to the rotation axis of the impeller 16. The oscillating arm 21 is located on the outer circular surface of the oscillating shaft 20 and extends towards the impeller 16. The oscillating arm 21 is located at the center position inside the housing 11. A connecting ring 22 is provided at one end of the oscillating arm 21 near the impeller 16. A central guide plate 23 is fixedly disposed on the oscillating shaft 20, which simultaneously connects both sides of the oscillating arm 21. The central guide plate 23, the oscillating shaft 20, and the oscillating arm 21 are located in the same plane. Side guide plates 24 are symmetrically disposed on both sides of the thickness direction of the central guide plate 23. The side guide plates 24 are fixed on the oscillating arm 21. The impeller 16 is located inside the housing 11 near the inner wall of the large diameter section 111.

[0045] The two ends of the swing shaft 20 are rotatably connected to the second rotating column 29. The inner wall of the small diameter section 113 of the housing 11 is provided with an annular seat 28 for the second rotating column 29 to be inserted. The second rotating column 29 and the annular seat 28 are tightly fitted together, which facilitates the rotatable installation of the swing shaft 20 in the housing 11.

[0046] Depend on Figure 5 As shown, both side guide vanes 24 include a parallel section 241 that is arranged parallel to the central guide vane 23 and close to the air outlet 15, and an expansion section 242 that extends towards the impeller 16 and is flared out. This makes the distance between the side guide vanes 24 away from the impeller 16 smaller than the distance between the side guide vanes 24 and the impeller 16, and the angle between the expansion section 242 of the side guide vane 24 and the central guide vane 23 is less than 90°.

[0047] The crank connecting rod assembly includes an eccentric ring 162 eccentrically mounted on the impeller 16 and a connecting rod 30 hinged between the eccentric ring 162 and the connecting ring 22. The diameter of the eccentric ring 162 is smaller than the length of the blades 161 on the impeller 16. The connecting rod 30 is rotatably connected to a third rotating column 31 and a fourth rotating column 32 at both ends along its length. The third rotating column 31 and the fourth rotating column 32 are respectively embedded in the eccentric ring 162 and the connecting ring 22.

[0048] Depend on Figure 6 As shown, the inner ring surfaces of the annular seat 28, the eccentric ring 162, and the connecting ring 22 can be chamfered to facilitate assembly according to assembly requirements.

[0049] When the hair dryer is used, the air blown out by the hair dryer enters through the air inlet 14, enters the housing 11, and flows through the impeller 16. The blades 161 face the wind and drive the impeller 16 to rotate. The axis of the impeller 16 and the axis of the eccentric ring 162 form a crank to drive the connecting rod to swing. When the impeller 16 drives the third connecting column to rotate to the upper limit position through the eccentric ring 162, the connecting rod drives the swing arm 21 to swing upward through the fourth rotating column 32, which in turn causes the swing shaft 20 to drive the side guide plate 24 and the central guide plate 23 to swing downward synchronously. When the impeller 16 drives the third connecting column to rotate to the lower limit position through the eccentric ring 162, the connecting rod drives the swing arm 21 to swing downward through the fourth rotating column 32, which in turn causes the swing shaft 20 to drive the side guide plate 24 and the central guide plate 23 to swing upward synchronously, thus realizing automatic swing-type air outlet.

[0050] The air flowing through the impeller 16 is gathered by the expansion section 242 of the side guide vane 24 and flows out from the air outlet 15, improving the blowing effect of the air outlet 15. Since the air inlet 14 is directly opposite the radial half-side area on the impeller 16, it drives the impeller 16 to rotate in a fixed direction, so that all the wind energy is converted into mechanical energy. The impeller 16 drives the swing blade 19 to swing through the crank connecting rod assembly, so that the wind gathered at the swing blade 19 is affected by the swing of the swing blade 19 and automatically swings to deliver air.

[0051] Users can adjust the connection angle between the nozzle and the hair dryer according to their own needs to adjust the swing angle of the air outlet 15.

Claims

1. A hair dryer nozzle with automatic swing air supply function, comprising a shell, the shell comprises a large diameter section and a small diameter section along the axial direction, characterized in that: The housing has a cap at one axial end corresponding to the large diameter section, and an air inlet is provided on the cap. The cap can guide all the blown air into the housing through the air inlet. The housing has an air outlet at the other axial end corresponding to the small diameter section. An impeller perpendicular to the housing axis is rotatably connected inside the housing. The impeller is divided into two symmetrical radial half-regions by the diameter of its cross-section. The air inlet surface of the air inlet only passes through one radial half-region. The housing has a swing blade with its axis parallel to the impeller. A crank-connecting rod assembly that can drive the swing blade to swing is provided between the swing blade and the impeller.

2. The hair dryer nozzle with automatic oscillating air supply function according to claim 1, characterized in that: The air inlet has a runway-shaped opening formed by a semi-circular arc and a straight line, and the cover is a cone-shaped structure that is recessed inward from the outer edge to the air inlet.

3. A hair dryer nozzle with automatic oscillating air delivery function according to claim 2, characterized in that: A transition section is also provided between the large-diameter section and the small-diameter section.

4. A hair dryer nozzle with an automatic oscillating air delivery function according to claim 1, 2, or 3, characterized in that: The width of the air inlet is greater than the axial length of the impeller, and the shape of the air outlet is the same as the shape of the air inlet.

5. A hair dryer nozzle with automatic oscillating air supply function according to claim 4, characterized in that: The inner wall of the small-diameter section is rotatably connected to a swing shaft, which is parallel to the rotation axis of the impeller. A swing arm extending towards the impeller is fixedly provided on the outer circular surface of the swing shaft. A central guide plate that connects both sides of the swing arm is fixedly provided on the swing shaft. The central guide plate, the swing shaft, and the swing arm are located in the same plane. Lateral guide plates are symmetrically provided on both sides of the thickness direction of the central guide plate. The lateral guide plates are fixed on the swing arm. The lateral guide plates and the central guide plate together form the swing blade.

6. A hair dryer nozzle with automatic oscillating air delivery function according to claim 5, characterized in that: The distance between the two lateral guide vanes at the end furthest from the impeller is smaller than the distance at the end closest to the impeller.

7. A hair dryer nozzle with automatic oscillating air delivery function according to claim 6, characterized in that: The swing arm is located at the center of the housing, and a connecting ring is provided at one end of the swing arm near the impeller.

8. A hair dryer nozzle with automatic oscillating air supply function according to claim 7, characterized in that: The crank-connecting rod assembly includes an eccentric ring eccentrically mounted on the impeller and a connecting rod hinged between the eccentric ring and the connecting ring.

9. A hair dryer nozzle with automatic oscillating air delivery function according to claim 8, characterized in that: The connecting rod is rotatably connected to two ends along its length, and the rotating columns are respectively embedded in the eccentric ring and the connecting ring.

10. A hair dryer nozzle with automatic oscillating air supply function according to claim 8, characterized in that: The diameter of the eccentric ring is smaller than the length of the blades on the impeller.

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