CN107965458B - Fan head assembly and bladeless blowing equipment - Google Patents
Fan head assembly and bladeless blowing equipment Download PDFInfo
- Publication number
- CN107965458B CN107965458B CN201711378783.7A CN201711378783A CN107965458B CN 107965458 B CN107965458 B CN 107965458B CN 201711378783 A CN201711378783 A CN 201711378783A CN 107965458 B CN107965458 B CN 107965458B
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- air
- flow guiding
- flow
- air outlet
- head assembly
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- 238000007664 blowing Methods 0.000 title description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 5
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 1
- 239000007921 spray Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a fan head assembly for a bladeless fan device and the bladeless fan device, the fan head assembly comprises a flow guiding device (20) arranged in an air duct (11), the flow guiding device (20) comprises a first flow guiding piece (21), the first flow guiding piece (21) is provided with a first flow guiding surface (21 a), the first flow guiding surface (21 a) obliquely extends to block part of inlet air flow, the air flow area of the air duct (11) at the position corresponding to the lower end of the first flow guiding surface (21 a) is larger than the air flow area of the air duct (11) at the position corresponding to the upper end of the first flow guiding surface (21 a), and the first flow guiding surface (21 a) faces towards a nozzle (12) to guide part of inlet air flow to the nozzle (12).
Description
Technical Field
The invention relates to the field of household appliances, in particular to a fan head assembly for a bladeless air blowing device and the bladeless air blowing device.
Background
The bladeless fan generates high-pressure air flow through the power system, and the high-pressure air flow enters the air duct and is emitted through the nozzle. However, the existing bladeless fan has the disadvantages that after the air flow enters the air duct from the air inlet, the air flow is sent out obliquely upwards from the nozzle at a larger speed and a larger spraying angle instead of being blown to a user in the horizontal direction, so that the user experience is poor; along the height direction of the air channel, the flow speed of the air flow emitted by the nozzles is gradually reduced, the spray angle of the air flow emitted by the nozzles obliquely upwards is smaller and smaller, the air flow emitted by the nozzles above is emitted in the horizontal direction with the spray angle almost being zero, but the air flow emitted by the nozzles below obliquely upwards and the air flow emitted by the nozzles above in the horizontal direction generate turbulence, so that the experience of a user is further influenced; moreover, the airflow emitted from the nozzle is closer to the lower side of the air duct, the airflow velocity is larger and the airflow velocity is smaller, so that the emitted airflow velocity is seriously uneven in the up-down direction, and the experience of a user is also influenced.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a fan head assembly for a bladeless fan apparatus and a bladeless fan apparatus for reducing the spray angle of the air flow emitted from the nozzle and improving the turbulence.
In order to achieve the above object, according to an aspect of the present invention, there is provided a fan head assembly for a bladeless fan apparatus, including an air outlet portion, the air outlet portion including an air inlet, a nozzle, and an air duct, the air inlet and the nozzle being in communication with the air duct, the fan head assembly including a flow guiding device disposed in the air duct, the flow guiding device including a first flow guiding member having a first flow guiding surface that extends obliquely downward to block a portion of an intake air flow, an air flow area of the air duct at a lower end of the first flow guiding surface being larger than an air flow area of the air duct at an upper end of the first flow guiding surface, the first flow guiding surface facing the nozzle to guide a portion of the intake air flow to the nozzle.
Further, from the lower end of the first flow guiding surface to the upper end of the first flow guiding surface, the airflow flowing area of the corresponding air duct is gradually reduced.
Further, the nozzle is arranged on the first side of the air outlet part, the first flow guiding piece is arranged on the second side of the air outlet part opposite to the first side, and the edge of the first flow guiding piece is in sealing connection with the inner wall of the second side of the air outlet part.
Further, the flow guiding device further comprises a second flow guiding piece located above the first flow guiding piece, the second flow guiding piece is provided with a second flow guiding surface extending obliquely upwards, the lower end of the second flow guiding surface is connected with the upper end of the first flow guiding surface, and the air flow area of the air channel at the lower end of the second flow guiding surface is smaller than that of the air channel at the upper end of the second flow guiding surface.
Further, from the lower end of the second flow guiding surface to the upper end of the second flow guiding surface, the airflow flowing area of the corresponding air duct is gradually increased.
Further, the flow guiding device comprises a third flow guiding piece, the third flow guiding piece is provided with a third flow guiding surface, and the second flow guiding surface is in smooth transition connection with the first flow guiding surface through the third flow guiding surface.
Further, the first flow guiding piece is in a flat plate shape, and the first flow guiding piece extends downwards from the upper end of the air duct in an inclined mode.
Further, the second diversion surface is a plane, an arc surface or a combination of the plane and the arc surface; and/or the first diversion surface is a plane, an arc surface or a combination of the plane and the arc surface.
Further, the air outlet part comprises a front air outlet piece and a rear air outlet piece, the front air outlet piece and the rear air outlet piece jointly define the air duct, the nozzle is arranged on the front side of the front air outlet piece, and the flow guiding device is connected to the rear side of the rear air outlet piece in a sealing mode.
Further, the flow guiding device and the rear air outlet piece are of an integrated structure.
Further, one of the front air outlet piece and the rear air outlet piece is provided with a positioning clamping groove, the other one of the front air outlet piece and the rear air outlet piece is provided with a positioning protrusion matched with the positioning clamping groove, and the front air outlet piece and the rear air outlet piece are connected through ultrasonic welding or gluing.
Further, the fan head assembly further comprises a shell piece, and the shell piece is covered outside the air outlet part.
Further, the air outlet part further comprises reinforcing ribs arranged in the air duct, and two ends of the reinforcing ribs are fixedly connected with the inner walls of the left side and the right side of the air duct.
Further, the nozzles extend along the up-down direction of the air duct, the number of the flow guiding devices is multiple, the flow guiding devices are arranged at intervals along the up-down direction of the air duct, and the flow guiding devices are arranged corresponding to the nozzles.
Another aspect of the present invention provides a bladeless blower apparatus comprising a base, a power system disposed within the base, and a fan head assembly of any of the above, the fan head assembly being coupled to the base to receive an intake air flow generated by the power system through the air inlet and to emit the intake air flow through the nozzle.
Further, the vaneless blowing device is any one of a vaneless fan, a vaneless blower, a vaneless fan heater, a vaneless humidifier, and a vaneless air cooler.
In the technical scheme of the invention, the first guide surface extends downwards in an inclined way and is arranged facing the nozzle, and under the guide effect of the first guide surface, part of air inlet flow gradually changes the movement direction and changes the vertical upward movement into the movement towards the nozzle. Because the air flow area of the air channel at the lower end of the first guide surface is larger than that of the air channel at the upper end of the first guide surface, the flow speed of the air inlet flow is increased in the process that the air inlet flow moves from the lower end of the first guide surface to the upper end of the first guide surface, and then part of the air inlet flow is sent out from the nozzle at a smaller spray angle under the guiding action of the first guide surface, the turbulence condition is improved, and the experience of a user is improved.
Drawings
FIG. 1 is an exploded view of a fan head assembly according to a first embodiment of the present invention;
FIG. 2 is a schematic view of the assembled structure of the fan head assembly of FIG. 1;
FIG. 3 is a schematic view of an air outlet of the fan head assembly of FIG. 1;
FIG. 4 is a schematic view of the rear air outlet and the air guiding device in FIG. 1;
FIG. 5 is a left side view of FIG. 4;
FIG. 6 is a schematic structural view of a rear air outlet and a flow guiding device according to a second embodiment of the present invention;
FIG. 7 is a schematic structural view of a rear air outlet and a flow guiding device according to a third embodiment of the present invention;
FIG. 8 is a schematic structural view of a rear air outlet and a flow guiding device according to a fourth embodiment of the present invention; the method comprises the steps of,
FIG. 9 is a schematic diagram of the structure of the air outlet part with the rear air outlet component shown in FIG. 6, viewed along the A-A direction in FIG. 6 and rotated clockwise for 90°.
Symbol description
10. Air outlet part 11, air duct 12, nozzle 13 and air inlet
14. Front air outlet piece 15, rear air outlet piece 16, reinforcing ribs 20 and flow guiding device
21. First guide piece 21a, first guide surface 22, second guide piece 22a, second guide surface
23. Third diversion element 23a, third diversion surface 30, outer shell element 141 and positioning clamping groove
151. Positioning protrusion
Detailed Description
In the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", etc. are terms of orientation for normal use of the bladeless blower, where "front" refers to a side facing the user, "rear" refers to a side facing away from the user, and taking fig. 5 as an example, "front" refers to a direction outward from the vertical paper surface shown in fig. 5, "rear" refers to a direction inward from the vertical paper surface shown in fig. 5, "up", "down" refers to an up-down direction shown in fig. 5, and "left" and "right" refer to a left-right direction shown in fig. 5.
"first side" and "second side" refer to directions.
The "spray angle" is the angle between the direction of the air flow emitted from the nozzle and the horizontal direction.
The embodiment of the invention provides bladeless air blowing equipment, which comprises a base (not shown), a power system (not shown) arranged in the base and a fan head assembly, wherein the fan head assembly is connected with the base to receive an air inlet flow generated by the power system and send the air inlet flow outwards. In this embodiment, description will be made taking a bladeless blower apparatus as an example of a bladeless fan. It will be appreciated that the type of bladeless blower device is not limited to a bladeless fan, but may be any of a bladeless blower, a bladeless fan heater, a bladeless humidifier, and a bladeless air cooler, for example.
Referring to fig. 1, 2 and 3, the fan head assembly includes an air outlet 10, a flow guiding device 20 and a housing 30, the air outlet 10 includes an air inlet 13, a nozzle 12 and an air duct 11, the air inlet 13 and the nozzle 12 are all communicated with the air duct 11, the shape of the air outlet 10 is not limited, and may be circular, inverted U-shaped, polygonal, etc., the cavity inside the air outlet 10 forms the air duct 11, and the shape of the air duct 11 is matched with the shape of the air outlet 10. In this embodiment, the air outlet portion 10 has a substantially symmetric inverted U-shaped structure, the number of air inlets 13 is two, and one air inlet 13 is respectively arranged at the lower portion of the air duct 11 at the left and right sides of the inverted U-shaped air outlet portion 10. The nozzle 12 of the air outlet 10 is disposed on a first side of the air outlet 10, and the first side may be a front side of the air outlet 10 facing the user or a rear side facing away from the user. The nozzle 12 may extend in the up-down direction along the first side, in a long slit configuration with a smaller width. The power system in the base generates an air inlet flow with pressure, the air inlet flow enters the air duct 11 from the base through the air inlet 13, and the air inlet flow is continuously emitted from the nozzle 12 in the process of moving from bottom to top in the air duct 11.
For example, referring to fig. 1 and 3, in an embodiment of the present invention, in order to facilitate demolding during production, the air outlet portion 10 includes a front air outlet member 14 and a rear air outlet member 15, the front air outlet member 14 and the rear air outlet member 15 are in sealed butt joint, the interiors of the front air outlet member 14 and the rear air outlet member 15 are hollow cavities, and the hollow cavities of the front air outlet member 14 and the rear air outlet member 15 together define the air duct 11. The nozzle 12 is disposed on the front side of the front air outlet 14, i.e., the first side of the air outlet 10. In order to facilitate the connection and positioning of the front air-out member 14 and the rear air-out member 15, the corresponding positions of the front air-out member 14 and the rear air-out member 15 are provided with positioning clamping grooves 141 and positioning protrusions 151 which are matched with each other, and the positioning protrusions 151 are clamped into the positioning clamping grooves 141 to pre-position the relative positions of the front air-out member 14 and the rear air-out member 15, so that the subsequent sealing connection is facilitated, for example, glue bonding or ultrasonic welding can be used at the butt joint.
Because the air outlet portion 10 is generally in a flat thin-wall structure, when the air outlet portion 10 receives external pressure, the shape of the air duct 11 inside the air outlet portion is easy to change, and thus the fluid distribution in the air duct 11 is affected. For this reason, referring to fig. 1, 5 and 9, in the present embodiment, the air outlet portion 10 further includes a reinforcing rib 16 disposed in the air duct 11, and two ends of the reinforcing rib 16 are fixedly connected with the inner walls of the left and right sides of the air duct 11. Specifically, the reinforcing ribs 16 are provided on the left and right side walls in the front air outlet 14 and/or the rear air outlet 15.
The casing member 30 is covered on the outside of the air outlet portion 10, specifically, the casing member 30 is covered on the outside of the front air outlet member 14 and the rear air outlet member 15, so as to play a role in beautifying the fan assembly. The casing member 30 may be connected to the air outlet 10 by bolts, screws, or clips.
The flow guiding device 20 is disposed in the air duct 11, the flow guiding device 20 includes a first flow guiding member 21, the first flow guiding member 21 has a first flow guiding surface 21a, the first flow guiding surface 21a extends obliquely downward in the air duct 11 to block part of the intake air flow, the airflow flowing area of the air duct 11 corresponding to the lower end of the first flow guiding surface 21a is larger than the airflow flowing area of the air duct 11 corresponding to the upper end of the first flow guiding surface 21a, and the first flow guiding surface 21a faces toward the nozzle 12 to guide part of the intake air flow from the air inlet 13 to the nozzle 12.
The "airflow area" refers to the area of the air outlet 10 in the horizontal cross section through which the air inlet flows upward in the air duct.
The first guide surface 21a extends obliquely downward and is disposed facing the nozzle 12, and part of the intake air flow gradually changes its direction of movement from vertical upward movement to movement toward the nozzle 12 under the guide action of the first guide surface 21 a. In the process that the inlet air flows from the lower end of the first guide surface 21a to the upper end of the first guide surface 21a, the air flow area of the corresponding air channel 11 at the lower end of the first guide surface 21a is larger than the air flow area of the corresponding air channel 11 at the upper end of the first guide surface 21a, so that the inlet air flows are continuously extruded and guided towards the direction of the nozzle 12, and then part of the inlet air flows are emitted from the nozzle 12 at a smaller spray angle under the guiding action of the first guide surface 21a, the phenomenon that the inlet air flows are emitted obliquely upwards from the nozzle 12 can be effectively improved, and the experience of a user is improved. Meanwhile, as the spraying angle of the air flow emitted by the nozzle 12 is reduced, the turbulence phenomenon can be effectively restrained, and the experience of a user is further improved.
The surface of the first guiding surface 21a should avoid turbulence of the airflow caused by structures such as sharp corners as much as possible. The first guide surface 21a may be a plane surface, an arc surface, or a combination of a plane surface and an arc surface.
Further, in order to increase the guiding effect on the intake air flow, the air flow area of the corresponding duct 11 gradually decreases from the lower end of the first guide surface 21a to the upper end of the first guide surface 21 a.
The position of the first flow guiding member 21 is not limited, for example, the first flow guiding member 21 is disposed on a second side of the air outlet portion 10 opposite to the first side, and an edge of the first flow guiding member 21 is in sealing connection with an inner wall of the second side of the air outlet portion 10. Specifically, referring to fig. 6 and 9, the first flow guiding member 21 is disposed at the rear side of the rear air outlet member 15 and is connected to the inner wall of the rear side of the rear air outlet member 15 in a sealing manner, for example, integrally formed on the inner wall of the rear side of the rear air outlet member 15. Therefore, on one hand, the fan assembly is simple and compact in structure and convenient to produce and process. On the other hand, all the intake air flows can flow through the interval between the first diversion element 21 and the first side of the air outlet part 10, and the first diversion surface 21a can have better guiding effect on the intake air flow.
The number of the first flow guiding members 21 may be set according to actual use requirements, and may be one or more. For example, referring to fig. 4 and 5, in the first embodiment of the present invention, the number of the first diversion elements 21 is two, and the two first diversion elements 21 are disposed at intervals in the up-down direction in the air duct 11. Referring to fig. 6, in the second embodiment of the present invention, the first guiding element 21 is one, the first guiding element 21 is in a longer flat plate shape, the flat first guiding element 21 is located at a position near the upper portion of the second side of the air outlet portion 10, the first guiding element 21 gradually extends downward from the upper end of the air duct 11, and the flat periphery is in sealing connection with the inner wall of the air outlet portion 10. It should be noted that the term "flat plate-like" is understood to include a flat plate-like shape as well as a plate-like shape that is slightly curved and has a certain curvature. In the prior art, the inlet air flow is continuously emitted from the nozzles 12 from the lower side of the air duct 11 to the upper side, so that the flow velocity of the air flow emitted from the nozzles 12 corresponding to the upper side of the air duct 11 is smaller than the flow velocity of the air flow emitted from the nozzles 12 corresponding to the lower side of the air duct 11. The first guide member 21 in the shape of a flat plate in the present embodiment is effective not only in reducing the injection angle of the intake air flow from the nozzle 12; in addition, in the direction from the lower end of the first guiding surface 21a to the upper end thereof, the airflow flowing area of the air duct 11 of the air outlet portion 10 is gradually reduced, so that the airflow velocity in the air duct 11 at the corresponding position is correspondingly increased, and the airflow velocity emitted by the nozzle 12 in the up-down direction of the air duct 11 is more uniform. The extension length of the first flow guiding element 21 can be changed according to actual needs.
Further, referring to fig. 4 and 5, in the first embodiment of the present invention, the flow guiding device 20 further includes a second flow guiding member 22, the second flow guiding member 22 is located above the first flow guiding member 21, the second flow guiding member 22 has a second flow guiding surface 22a extending obliquely upwards, and a lower end of the second flow guiding surface 22a is connected to an upper end of the first flow guiding surface 21a, which may be a direct connection or a smooth transition connection through an intermediate structure. For example, referring to fig. 7, in the third embodiment of the present invention, the flow guiding device 20 further includes a third flow guiding member 23, the third flow guiding member 23 has a third flow guiding surface 23a, and the first flow guiding surface 21a and the second flow guiding surface 22a are in smooth transition connection through the third flow guiding surface 23a of the third flow guiding member 23. The first diversion surface 21a, the second diversion surface 22a and the third diversion surface 23a are in smooth transition connection so as to achieve better diversion effect.
The second guide surface 22a can guide the intake air flow which continues to move upward after bypassing the first guide surface 21a, and prevents the occurrence of the vortex phenomenon at the upper position of the first guide member 21.
Further, the air flow area of the corresponding air duct 11 at the lower end of the second guiding surface 22a is smaller than the air flow area of the corresponding air duct 11 at the upper end of the second guiding surface 22a, so that the buffer effect is exerted on the upward moving air inlet flow. Further, from the lower end of the second guiding surface 22a to the upper end of the second guiding surface 22a, the airflow flowing area of the corresponding air duct 11 gradually increases. In the present embodiment, the airflow area of the air duct 11 corresponding to the guiding device gradually contracts and then gradually expands from bottom to top.
The shape of the second guiding surface is not limited, and may be, for example, a plane, an arc surface, or a combination of a plane and an arc surface.
The second guiding element 22 is disposed at a position matching the position of the first guiding element 21, for example, when the first guiding element 21 is disposed at the rear side of the rear air-out member 15, the second guiding element 22 is correspondingly disposed at the rear side of the rear air-out member 15.
The number of second baffle members 22 is determined according to actual needs. When the number of the second guiding elements 22 is plural, the plural second guiding elements 22 are disposed at intervals in the up-down direction of the air duct 11. It should be noted that the first flow guiding members 21 of the present invention need not be disposed in one-to-one correspondence with the second flow guiding members 22, i.e., the first flow guiding members 21 may have the second flow guiding members 22 engaged therewith, or may not have the second flow guiding members 22 engaged therewith. For example, referring to fig. 1 and 3, in the first embodiment, the second flow guiding elements 22 and the first flow guiding elements 21 are in one-to-one correspondence. Referring to fig. 6, in the second embodiment, there is only one first guide member 21, and no second guide member 22; referring to fig. 7, in the third embodiment, the second guiding elements 22 and the first guiding elements 21 are in one-to-one correspondence. Referring to fig. 8, in a fourth embodiment of the present invention, there are two first guiding elements 21 and one second guiding element 22.
It should be noted that, in the present invention, the flow guiding device 20 may be a split structure or an integral structure, and specifically, the first flow guiding member 21 may be a split structure or an integral structure; the second flow guiding member 22 may be a split type structure or a one-piece structure. Specifically, the first air guiding member 21, the second air guiding member 22 and the rear side of the rear air outlet member 15 are integrally formed.
Referring to fig. 1, 3, 4 and 5, in the following, a first embodiment is taken as an example, when there are a plurality of flow guiding devices 20, a plurality of flow guiding devices 20 are arranged at intervals in the up-down direction of the air duct, and each flow guiding device 20 includes a first flow guiding element 21 and a second flow guiding element 22, the working procedure of the embodiment of the present invention is as follows:
the inlet air flow from the inlet air inlet 13 enters the air duct 11, and when the inlet air flow encounters the first guide surface 21a of the first guide device 20, the flow direction of the inlet air flow is changed so that a part of the inlet air flow is emitted from the nozzle 12 at a smaller injection angle. The air inlet flow which is not emitted by the nozzle 12 continues to move upwards to meet the second guide surface 22a by bypassing the first guide surface 21a, the air flow area is increased, the air inlet flow is buffered, the air inlet flow continues to meet the first guide surface 21a of the second guide device 20 upwards, the air inlet flow is emitted from the nozzle 12 at a smaller spray angle under the action of the first guide surface 21a, meanwhile, the air flow speed of the air flow is increased due to the fact that the air flow area is reduced, the air flow speed of the air flow emitted by the nozzle 12 is correspondingly increased, and therefore the difference of the air flow speeds of the air flow emitted by the nozzles 12 below can be reduced, the air flow emitted by the nozzles 12 at all positions of the air outlet portion 10 is more uniform, the experience of a user is better, and the action analysis of the second guide surface 22a of the second guide device 20 is the same as above and is not repeated.
In general, the air flow emitted from the nozzle 12 near the middle position of the bladeless fan in the up-down direction of the duct 11 greatly affects the user's experience, and therefore, the deflector 20 should be provided in this area.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention.
Claims (15)
1. A fan head assembly for a bladeless fan apparatus, comprising an air outlet portion (10), the air outlet portion (10) comprising an air inlet (13), a nozzle (12) and an air duct (11), the air inlet (13) and the nozzle (12) both communicating with the air duct (11), characterized in that the fan head assembly comprises a deflector (20) arranged within the air duct (11), the deflector (20) comprising a first deflector (21), the first deflector (21) having a first deflector surface (21 a), the first deflector surface (21 a) extending obliquely downwards to block part of the inlet air flow, the air flow area of the air duct (11) corresponding at the lower end of the first deflector surface (21 a) being larger than the air flow area of the air duct (11) corresponding at the upper end of the first deflector surface (21 a), the first deflector surface (21 a) facing the nozzle (12) to direct part of the inlet air flow to the nozzle (12);
the air outlet part (10) comprises a front air outlet piece (14) and a rear air outlet piece (15), the front air outlet piece (14) and the rear air outlet piece (15) jointly define the air duct (11), the nozzle (12) is arranged on the front side of the front air outlet piece (14), and the flow guiding device (20) is connected to the rear side of the rear air outlet piece (15) in a sealing mode;
the front air outlet piece (14) and the rear air outlet piece (15) are hollow cavities, and the hollow cavities of the front air outlet piece and the rear air outlet piece jointly define the air duct (11).
2. The fan head assembly according to claim 1, wherein the airflow flow area of the corresponding air duct (11) gradually decreases from the lower end of the first flow guiding surface (21 a) to the upper end of the first flow guiding surface (21 a).
3. The fan head assembly according to claim 1, wherein the nozzle (12) is disposed on a first side of the air outlet portion (10), the first flow guiding member (21) is disposed on a second side of the air outlet portion (10) opposite to the first side, and an edge of the first flow guiding member (21) is in sealing connection with an inner wall of the second side of the air outlet portion (10).
4. The fan head assembly according to claim 1, wherein the flow guiding device (20) further comprises a second flow guiding member (22) located above the first flow guiding member (21), the second flow guiding member (22) has a second flow guiding surface (22 a) extending obliquely upward, a lower end of the second flow guiding surface (22 a) is connected with an upper end of the first flow guiding surface (21 a), and an air flow area of the air duct (11) at a lower end of the second flow guiding surface (22 a) is smaller than an air flow area of the air duct (11) at an upper end of the second flow guiding surface (22 a).
5. The fan head assembly according to claim 4, wherein the airflow flow area of the corresponding air duct (11) gradually increases from the lower end of the second flow guiding surface (22 a) to the upper end of the second flow guiding surface (22 a).
6. The fan head assembly according to claim 5, wherein the flow guiding device (20) comprises a third flow guiding member (23), the third flow guiding member (23) having a third flow guiding surface (23 a), the second flow guiding surface (22 a) being in smooth transition with the first flow guiding surface (21 a) via the third flow guiding surface (23 a).
7. The fan head assembly according to any one of claims 1-6, wherein the first flow guide (21) is plate-shaped, and the first flow guide (21) extends obliquely downward from an upper end of the air duct (11).
8. The fan head assembly according to any of claims 4-6, wherein the second guiding surface (22 a) is a plane, an arc surface, or a combination of a plane and an arc surface; and/or, the first diversion surface (21 a) is a plane, an arc surface or a combination of the plane and the arc surface.
9. The fan head assembly according to claim 1, wherein the flow guiding device (20) is of unitary construction with the rear air outlet (15).
10. The fan head assembly according to claim 1, wherein one of the front air outlet piece (14) and the rear air outlet piece (15) is provided with a positioning clamping groove (141), the other one is provided with a positioning protrusion (151) matched with the positioning clamping groove (141), and the front air outlet piece (14) and the rear air outlet piece (15) are connected through ultrasonic welding or through adhesive bonding.
11. The fan head assembly according to claim 1, further comprising a housing member (30), the housing member (30) being housed outside the air outlet portion (10).
12. The fan head assembly according to claim 1, wherein the air outlet portion (10) further comprises a reinforcing rib (16) arranged in the air duct (11), and two ends of the reinforcing rib (16) are fixedly connected with the inner walls of the left side and the right side of the air duct (11).
13. The fan head assembly according to claim 1, wherein the nozzles (12) extend in the vertical direction of the air duct (11), the number of the flow guiding devices (20) is plural, the flow guiding devices (20) are arranged at intervals in the vertical direction of the air duct (11), and the flow guiding devices (20) are arranged corresponding to the nozzles (12).
14. A bladeless blower apparatus comprising a base, a power system disposed within the base, and a fan head assembly according to any one of claims 1-13, coupled to the base to receive an intake air flow generated by the power system through the air intake (13) and to emit the intake air flow through the nozzle (12).
15. The bladeless blower apparatus of claim 14, wherein the bladeless blower apparatus is any one of a bladeless fan, a bladeless blower, a bladeless fan heater, a bladeless humidifier, and a bladeless air cooler.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711378783.7A CN107965458B (en) | 2017-12-19 | 2017-12-19 | Fan head assembly and bladeless blowing equipment |
| PCT/CN2018/121607 WO2019120180A1 (en) | 2017-12-19 | 2018-12-17 | Fan head assembly for bladeless air-blowing apparatus, bladeless air-blowing apparatus, head for bladeless fan, and bladeless fan |
| EP18890517.8A EP3726066B1 (en) | 2017-12-19 | 2018-12-17 | Fan head assembly for bladeless air-blowing apparatus, bladeless air-blowing apparatus, head for bladeless fan, and bladeless fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711378783.7A CN107965458B (en) | 2017-12-19 | 2017-12-19 | Fan head assembly and bladeless blowing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107965458A CN107965458A (en) | 2018-04-27 |
| CN107965458B true CN107965458B (en) | 2023-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711378783.7A Active CN107965458B (en) | 2017-12-19 | 2017-12-19 | Fan head assembly and bladeless blowing equipment |
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| Country | Link |
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| CN (1) | CN107965458B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021047462A1 (en) * | 2019-09-12 | 2021-03-18 | 追创科技(苏州)有限公司 | Hand-held hair dryer device |
| CN113137407B (en) * | 2020-01-19 | 2022-10-25 | 广东美的环境电器制造有限公司 | Air duct component for air supply device |
| CN113137400A (en) * | 2020-01-19 | 2021-07-20 | 广东美的环境电器制造有限公司 | Bladeless air supply device |
| CN111594470A (en) * | 2020-05-19 | 2020-08-28 | 凯优奇科技(广东)有限公司 | Bladeless fan |
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| CN107965458A (en) | 2018-04-27 |
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