CN108180175B - A kind of fan head assembly and without leaf blowing apparatus - Google Patents
A kind of fan head assembly and without leaf blowing apparatus Download PDFInfo
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- CN108180175B CN108180175B CN201711376203.0A CN201711376203A CN108180175B CN 108180175 B CN108180175 B CN 108180175B CN 201711376203 A CN201711376203 A CN 201711376203A CN 108180175 B CN108180175 B CN 108180175B
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- air
- air duct
- guide face
- section
- head assembly
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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
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
- F04F5/16—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
- F04F5/46—Arrangements of nozzles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention provides a kind of fan head assembly for no leaf blowing apparatus and without leaf blowing apparatus, the fan head assembly includes outlet section (10), the outlet section (10) includes air inlet (13), nozzle (12) and air duct (11), the air inlet (13) is connected to the air duct (11) with the nozzle (12), the air duct has variable cross-section part, the variable cross-section part corresponding airflow area consecutive variations from bottom to up, and corresponding airflow area is greater than corresponding airflow area at upper end at the lower end of the variable cross-section part.During the present invention program makes air inlet flow through rheology section, the flow velocity of inlet air flow is increased, so that the air-flow velocity that the nozzle of the up and down direction of variable cross-section part corresponding position issues is more uniform, promotes user experience.
Description
Technical field
The present invention relates to living electric apparatus fields more particularly to a kind of for the fan head assembly of no leaf blowing apparatus and without leaf
Blowing apparatus.
Background technique
Bladeless fan generates high pressure draught by dynamical system, and high pressure draught enters in air duct to be issued through nozzle.But it is existing
Bladeless fan, after high pressure draught enters air duct from air inlet, nozzle closer to the downside in air duct, the air-flow velocity of sending is got over
Greatly, the air-flow velocity that the nozzle closer to the upside in air duct issues is smaller, and the air-flow velocity for causing nozzle to issue extends in nozzle
Up and down direction it is seriously uneven, cause the experience sense of user poor.
Summary of the invention
In view of this, being blown an embodiment of the present invention is intended to provide a kind of fan head assembly for no leaf blowing apparatus and without leaf
Wind devices promote user experience to improve the uniformity for the air-flow velocity that the nozzle of up and down direction issues.
In order to achieve the above objectives, an aspect of of the present present invention provides a kind of fan head assembly for no leaf blowing apparatus, including
Outlet section, the outlet section include air inlet, nozzle and air duct, and the air inlet and the nozzle connect with the air duct
Logical, the air duct has a variable cross-section part, the variable cross-section part corresponding airflow area consecutive variations from bottom to up, and
Corresponding airflow area is greater than corresponding airflow area at upper end at the lower end of the variable cross-section part；The fan head
Component includes the guiding device being set in the air duct, and the guiding device includes the first conducting element, first conducting element
With the first guide face, first guide face is extended obliquely downward with stop portions inlet air flow, under first guide face
The airflow area in corresponding air duct is greater than the airflow face in corresponding air duct at the upper end of first guide face at end
Product to the corresponding air duct between upper end is the variable cross-section part at the lower end of first guide face.
Further, the variable cross-section part is located at the top and/or middle part in the air duct.
Further, the side wall of the outlet section is from bottom to up to contract to form the variable cross-section part.
Further, up and down direction of the nozzle along the air duct extends, the quantity of the variable cross-section part be it is multiple,
Multiple variable cross-section parts are arranged along the up and down direction interval in the air duct.
Further, first conducting element is plate-like, and first conducting element is tilted towards from the upper end in the air duct
Lower extension.
Further, first guide face is head-on towards the nozzle guiding partial admission flow to the nozzle.
Further, the nozzle is set to the first side of outlet section, first conducting element be set to outlet section with
The opposite second side in first side, the edge of first conducting element and second side of the outlet section are tightly connected.
Further, first guide face is head-on towards the side wall of the outlet section, the edge of first conducting element
It is tightly connected with the side wall of the outlet section.
Further, the guiding device further includes the second conducting element above the first conducting element, and described second leads
Stream part has the second guide face for tilting upward extension, the upper end company of the lower end of second guide face and first guide face
It connects, the airflow area in the air duct at the lower end of second guide face is less than the air duct at the upper end of second guide face
Airflow area.
Further, second guide face is the combination of plane, cambered surface or plane and cambered surface；And/or described
One guide face is the combination of plane, cambered surface or plane and cambered surface.
Further, the outlet section includes preceding outlet air part and rear outlet air part, and the preceding outlet air part and rear outlet air part are common
Limit the air duct, the nozzle is set on front side of the preceding outlet air part, the guiding device be sealedly attached to it is described after go out
The rear side of wind part.
Another aspect of the present invention provides a kind of no leaf blowing apparatus, including pedestal, the dynamical system being set in pedestal
And any of the above-described kind of fan head assembly, the fan head assembly connect described dynamic to be received by the air inlet with the pedestal
The inlet air flow of Force system generation simultaneously passes through the nozzle sending inlet air flow.
Further, the no leaf blowing apparatus be bladeless fan, without leaf hair dryer, without leaf warm-air drier, without leaf humidifier,
And without any one of leaf air-cooler.
In technical solution of the present invention, since the airflow area of the lower part of the variable cross-section part in air duct is greater than top
Airflow area, so that the flow velocity of inlet air flow is increased during air inlet flows through rheology section, so that variable cross-section
The air-flow velocity that the nozzle of the up and down direction of part corresponding position issues is more uniform, promotes user experience.
Detailed description of the invention
Fig. 1 is the decomposition texture schematic diagram of the fan head assembly of first embodiment of the invention；
Fig. 2 is the assembling structure schematic diagram of the fan head assembly in Fig. 1；
Fig. 3 is the structural schematic diagram of the outlet section of the fan head assembly in Fig. 1；
Fig. 4 is the structural schematic diagram of rear the outlet air part and guiding device in Fig. 1；
Fig. 5 is the left view of Fig. 4；
Fig. 6 is the structural schematic diagram of the rear outlet air part of second embodiment of the invention；
Fig. 7 is the structural schematic diagram of rear the outlet air part and guiding device of third embodiment of the invention；
Fig. 8 is the structural schematic diagram of rear the outlet air part and guiding device of fourth embodiment of the invention
Fig. 9 is the structural schematic diagram of rear the outlet air part and guiding device of fifth embodiment of the invention；
Figure 10 is the structural schematic diagram of rear the outlet air part and guiding device of sixth embodiment of the invention；
Figure 11 is A-A direction section view of the outlet section with the rear outlet air part in Fig. 8 in Fig. 8 and rotates clockwise 90 °
Structural schematic diagram afterwards.
Symbol description
10, outlet section 11, air duct 12, nozzle 13, air inlet
14, preceding outlet air part 15, rear outlet air part 16, reinforcing rib 20, guiding device
21, the first conducting element 21a, the first guide face 22, the second conducting element 22a, the second guide face
23, third conducting element 23a, third guide face 30, outer casing member 141, locating groove
151, positioning protrusion 101a, air duct left side wall
101b, air duct right side wall
Specific embodiment
In description of the invention, noun of locality "upper", "lower", "front", "rear", "left", "right" for using etc. are for no leaf
The noun of locality of blowing apparatus under normal use, " preceding " refer to user oriented side, and " rear " is referred to backwards to user's
Side, by taking Fig. 5 as an example, it is " preceding " be vertical paper outwardly direction shown in fig. 5, it is " rear " be vertical paper shown in fig. 5 inwards
Direction, "upper", "lower" be up and down direction shown in fig. 5, "left", "right" be left and right directions shown in fig. 5.
In the embodiment of the present invention, " jet angle " is the angle of the airflow direction that nozzle issues and horizontal direction." airflow
Area " refers on the cross section in the horizontal direction of outlet section 10, the area flowed through upwards in air duct 11 for inlet air flow." the
Side " and " second side " refer to direction." side wall of outlet section " refers to that all of the shell for being set as air duct 11 are enclosed in outlet section 10
Side wall, left side wall 101a, right side wall 101b, front side wall and rear wall including air duct 11.
The embodiment of the present invention provides a kind of no leaf blowing apparatus, including pedestal (not shown), the power being set in pedestal
System (not shown) and fan head assembly, fan head assembly are connect to receive inlet air flow that dynamical system generates and by air inlet with pedestal
Stream is sent out.In the present embodiment, it is described so that no leaf blowing apparatus is bladeless fan as an example.It is understood that the nothing
The type of leaf blowing apparatus is not limited to bladeless fan, for example, it is also possible to be no leaf hair dryer, without leaf warm-air drier, without leaf humidify
Device and without any one of leaf air-cooler.
Fig. 1, Fig. 2 and Fig. 3 are please referred to, the first embodiment of the present invention, fan head assembly includes outlet section 10 and shell
Part 30, outlet section 10 include air inlet 13, nozzle 12 and air duct 11, and air inlet 13 and nozzle 12 are connected to air duct 11, out
10 global shape of wind portion is unlimited, can be circular ring shape, ∩ shape, polygon etc., and the cavity inside outlet section 10 forms air duct 11, wind
The shape in road 11 and the shape of outlet section 10 match.In the present embodiment, the substantially symmetrical ∩ of the shape of outlet section 10
Shape structure, the quantity of air inlet 13 are two, and an air inlet is respectively arranged at 11 lower part of air duct of the left and right sides of the outlet section 10 of ∩ shape
Mouth 13.The nozzle 12 of outlet section 10 is set to the first side of outlet section 10, and it is user oriented which can be outlet section 10
Front side is also possible to the rear side away from user.Nozzle 12 can extend along the up and down direction of the first side, be in slit gap structure and slit
The width of gap is smaller.Dynamical system in pedestal generates the inlet air flow with pressure, and inlet air flow enters out of pedestal through air inlet 13
In air duct 11, during inlet air flow moves from bottom to up in air duct 11, can constantly it be issued from nozzle 12.
The structure type of outlet section 10 is unlimited, for example, the left side wall 101a of outlet section 10, right side wall 101b, front side wall with
And rear wall can be integrally formed structure.For another example Fig. 1 and Fig. 3 are please referred to, in the first embodiment of the present invention, for just
Demoulding processing when production, outlet section 10 includes preceding outlet air part 14 and rear outlet air part 15, preceding outlet air part 14 and rear outlet air part 15
The inside of sealing docking, preceding outlet air part 14 and rear outlet air part 15 is hollow cavity, and the hollow cavity of the two limits jointly
Above-mentioned air duct 11 out.The front side of outlet air part 14, i.e. the first side of outlet section 10 before nozzle 12 is set to.For the ease of preceding outlet air
The connection of part 14 and rear outlet air part 15 positions, and the corresponding position of preceding outlet air part 14 and rear outlet air part 15 is provided with determining of being mutually matched
Position card slot 141 and positioning protrusion 151, are caught in locating groove 141 by positioning protrusion 151, i.e., go out by preceding outlet air part 14 and afterwards
The relative position of wind part 15 is pre-positioned, and subsequent sealed connection is convenient for, for example, can be bonded or be used with glue at docking
Ultrasonic bonding.
Since outlet section 10 is general all at flat thin-wall construction, so that outlet section 10 is when by external pressure, inside
The shape in air duct 11 be easy to happen variation, and then influence the fluid distrbution in air duct 11.For this purpose, Fig. 5, Fig. 6 are please referred to, and
Fig. 7, outlet section 10 further include the reinforcing rib 16 being set in air duct 11, and the both ends of reinforcing rib 16 are fixed on the left side wall in air duct 11
Between 101a and right side wall 101b.Specifically, it is left and right in outlet air part 14 and/or rear outlet air part 15 before reinforcing rib 16 is set to
On the side wall of side.
Outer casing member 30 covers at the outside of outlet section 10, and specifically, outer casing member 30 covers at preceding outlet air part 14 and rear outlet air
The outside of part 15 plays the role of beautifying fan component.Outer casing member 30 can pass through the modes such as bolt, screw or clamping and outlet section
10 connections.
Air duct 11 has a variable cross-section part, variable cross-section part corresponding airflow area consecutive variations from bottom to up, and
Corresponding airflow area is greater than corresponding airflow area at upper end at the lower end of the variable cross-section part.Described
" consecutive variations " refer to that the changing value of airflow area does not have biggish mutation, for example, variable cross-section part is substantially in lower big
Upper small form, the airflow area of variable cross-section can be being gradually reduced for linear formula, be also possible in relatively slow curve
Formula is substantially in reduced trend.
During inlet air flow moves to the upper end of variable cross-section part from the lower end of variable cross-section part, inlet air flow is constantly squeezed
Pressure, air-flow velocity are constantly increased, poor to reduce the air-flow velocity issued from the nozzle 12 of up and down direction, so that variable cross-section portion
The air velocity for dividing the nozzle 12 of corresponding up and down direction to issue is more uniform, promotes the experience sense of user.
It should be noted that " the variable cross-section part " refers to one section of airflow in 11 up and down direction of air duct
The air duct 11 that area changes.
Variable cross-section part can be positioned at the top or middle part in air duct 11, alternatively, the top and middle part in air duct 11 have
Variable cross-section part.
The quantity of variable cross-section part can be one；Be also possible to it is multiple, multiple variable cross-section parts along air duct 11 up and down
The setting of direction interval.
Variable cross-section part, which can be, to be formed from the side wall 101 of outlet section 10 to contract, for example, it may be outlet section 10
Left side wall 101a and/or right side wall 101b it is tilted to air duct 11；And/or outlet section 10 front side wall and/or rear wall to
Air duct 11 is tilted." front side wall of outlet section 10 " is the corresponding side wall in the first side of the outlet section 10, " outlet air
The rear wall in portion 10 " is side wall corresponding with the opposite second side in the first side.Referring to Fig. 6, provided by the invention second implements
In example, the right side wall 101b of outlet section 10 is tilted to air duct 11.
Variable cross-section part can be to be added guiding device and is formed in the air duct 11 in outlet section 10, please refer to Fig. 1 with
And Fig. 7-Figure 10, fan head assembly further include the guiding device 20 being set in air duct 11, guiding device 20 includes the first conducting element
21, there is the first conducting element 21 first guide face 21a, the first guide face 21a to extend downwardly with blocking portion air duct 11 is tilted
Divide inlet air flow, the airflow area in the air duct 11 of the lower end corresponding position of the first guide face 21a is upper greater than the first guide face 21a
The airflow area for holding the air duct 11 of corresponding position, to corresponding air duct 11 between upper end at the lower end of the first guide face 21a
For variable cross-section part.
First guide face 21a can be any one direction towards outlet section 10.Referring to Fig. 7, provided by the invention
In 3rd embodiment, the first guide face 21a towards outlet section 10 left side wall 101a and/or right side wall 101b, specifically, first
Conducting element 21 is in longer tabular, and flat first conducting element 21 is located at the position on the close top of second side of outlet section 10
It sets, the first conducting element 21 tilts extension gradually downward from the upper end in air duct 11, and flat periphery and outlet section 10 is interior
Wall is tightly connected.
After the inlet air flow of bladeless fan in the prior art enters air duct from air inlet, with larger speed and biggish injection
Angle issues obliquely from nozzle, blows to user without being horizontally oriented, and causes user experience poor；Along the height in air duct
Direction, the air-flow velocity that nozzle issues are gradually reduced, and the jet angle that nozzle issues air-flow obliquely is smaller and smaller, the nozzle of top
The air-flow of sending is issued with the almost nil horizontal direction of jet angle, but the air-flow that issues obliquely of lower section nozzle and upper horizontal
The air-flow that direction issues can generate flow-disturbing, further affect the experience sense of user.For this purpose, referring to Fig. 1, Fig. 8-Figure 10, sheet
The first embodiment of invention, fourth embodiment, the 5th embodiment, in sixth embodiment, the first guide face 21a is head-on towards nozzle
12 settings, under the guide functions of the first guide face 21a, partial admission flow gradually changes the direction of motion, by moving straight up
It changes into towards the movement of the direction of nozzle 12, reduces nozzle 12 and issue the jet angle of air-flow, therefore flow-disturbing can be effectively inhibited
Phenomenon further promotes the experience sense of user.
The surface of first guide face 21a should avoid disturbance of the structures such as wedge angle to air-flow as far as possible.First guide face 21a can be with
It is plane, is also possible to cambered surface, can also be the combination of plane and cambered surface.
The position of first conducting element 21 is unlimited, for example, the left side wall in outlet section 10 can be set in the first conducting element 21
On 101a or right side wall 101b, it is also possible on the inner wall that second side of outlet section 10 is set, i.e. the rear wall of outlet section 10,
And first conducting element 21 edge and outlet section 10 second side inner wall be tightly connected.Specifically, the first conducting element 21 is arranged
It is tightly connected in the rear side of rear outlet air part 15, and with the inner wall of the rear side of rear outlet air part 15, for example, being shaped in rear outlet air part
On the inner wall of 15 rear side.In this way, on the one hand make the structure of fan component simple, compact, processing easy to produce.On the other hand
All inlet air flows may make to flow through in the interval between the first conducting element 21 and the first side of outlet section 10, the first water conservancy diversion
Face 21a can play better guide effect to inlet air flow.
The quantity of first conducting element 21 can be set according to actual needs, can be one either it is multiple.Often
The corresponding variable cross-section part of one the first conducting element 21.For example, Fig. 1-Fig. 5 is please referred to, in the first embodiment of the present invention, the
The quantity of one conducting element 21 is two, and two the first conducting elements 21 up and down direction interval in air duct 11 is arranged.Referring to Fig. 8,
In fourth embodiment provided by the invention, the first conducting element 21 be one, the first conducting element 21 be in longer tabular, first
Guide face 21a is located at the position on the close top of second side of outlet section 10 towards nozzle 12, flat first conducting element 21,
First conducting element 21 tilts extension gradually downward from the upper end in air duct 11, and the inner wall on flat periphery and outlet section 10 is close
Envelope connection.It should be noted that " tabular " is understood to include straight plate and slight curving and with one
Determine the plate of radian.The development length of first conducting element 21 can be changed accordingly according to actual needs.
Further, guiding device 20 further includes the second conducting element 22, and the second conducting element 22 is located at the first conducting element 21
Top, the second conducting element 22 have the second guide face 22a for tilting upward extension, and the lower end of the second guide face 22a is led with first
The upper end of stream interface 21a connects, and can be and is directly connected to, is also possible to be connected smoothly by intermediate structure.For example, asking
Refering to 9, in the fifth embodiment of the present invention, guiding device 20 further includes third conducting element 23, and third conducting element 23 has third
Guide face 23a passes through the third guide face 23a of third conducting element 23 between the first guide face 21a and the second guide face 22a
It is connected smoothly.The company of smooth transition between first guide face 21a, the second guide face 22a and third guide face 23a
It connects, to reach preferable diversion effect.
Second guide face 22a can will be oriented to around the inlet air flow continued up after the first guide face 21a, prevent
Only there is vortex phenomenon in the top position of the first conducting element 21.
Further, the airflow area in corresponding air duct 11 is led less than second from the lower end of the second guide face 22a
The airflow area in corresponding air duct 11 at the upper end of stream interface 22a, plays buffer function to the inlet air flow moved upwards.More into
One step, from the lower end of the second guide face 22a to the upper end of the second guide face 22a, the airflow in corresponding air duct 11
Area is gradually increased.I.e. in the present embodiment, the airflow area in the air duct 11 of guiding device corresponding position is first from bottom to up gradually
Contraction is gradually expanded again.
The shape of second guide face is unlimited, such as can be the combination of plane, cambered surface or plane and cambered surface.
The setting position of second conducting element 22 need to cooperate the position of the first conducting element 21, for example, when the first conducting element 21 is set
When being placed in the rear side of rear outlet air part 15, the second conducting element 22 is also arranged in correspondence in the rear side of rear outlet air part 15.
The quantity of second conducting element 22 is determine according to actual needs.It is multiple when the quantity of the second conducting element 22 is multiple
Second conducting element 22 is arranged at the up and down direction interval in air duct 11.It should be noted that the first conducting element 21 of the invention is not required to
Will with the second conducting element 22 and be arranged in a one-to-one correspondence, i.e. the first conducting element 21 can have the second matched conducting element 22,
It can be the second not matched conducting element 22.
It should be noted that guiding device 20 can be split type structure in the present invention, it is also possible to integral structure,
Specifically, the first conducting element 21 can be split type structure, be also possible to integral structure；Second conducting element 22 can be fission
Formula structure, is also possible to integral structure.Specifically, the rear side of the first conducting element 21, the second conducting element 22 and rear outlet air part 15
It is an integral structure.
When variable cross-section part have it is multiple, multiple variable cross-section parts air duct 11 up and down direction interval be arranged, please refer to figure
1, Fig. 3, Fig. 4 and Fig. 5, below by taking first embodiment as an example, the course of work of the embodiment of the present invention is as follows:
Inlet air flow from air inlet 13 enters in air duct 11, when inlet air flow enter first variable cross-section part, that is, encounter
When the first guide face 21a of first guiding device 20, inlet air flow is constantly extruded, and air velocity constantly increases, first change
The air-flow velocity that the nozzle 21 of the corresponding up and down direction of section issues is more uniform, and in the effect of the first guide face 21a
The flow direction of lower inlet air flow is varied so that partial admission flow is issued with lesser jet angle from nozzle 12.It is issued without nozzle 12
Inlet air flow continue up around the first guide face 21a and encounter the second guide face 22a, the increase of airflow area is right
Inlet air flow plays buffer function, and inlet air flow continues up the first guide face 21a for encountering second guiding device 20, similarly, the
The function analysis of two guiding devices 20 is same as above, and details are not described herein.
Generally, the air-flow that nozzle 12 of the bladeless fan near the middle position of 11 up and down direction of air duct issues is to user
Experience sense influence it is very big, therefore, but guiding device 20 should be set in the region.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (13)
1. a kind of fan head assembly for no leaf blowing apparatus, including outlet section (10), the outlet section (10) includes air inlet
(13), nozzle (12) and air duct (11), the air inlet (13) are connected to the air duct (11) with the nozzle (12),
It is characterized in that, the air duct (11) has variable cross-section part, the variable cross-section part corresponding airflow area from bottom to up
Consecutive variations, and corresponding airflow area is greater than corresponding airflow face at upper end at the lower end of the variable cross-section part
Product；The fan head assembly includes the guiding device (20) that is set in the air duct (11), and the guiding device (20) includes the
One conducting element (21), first conducting element (21) have the first guide face (21a), and first guide face (21a) is tilted towards
Lower extension is with stop portions inlet air flow, and at the lower end of first guide face (21a) the airflow face of corresponding air duct (11)
Product is greater than the airflow area of corresponding air duct (11) at the upper end of first guide face (21a), first guide face
At the lower end of (21a) to the corresponding air duct (11) between upper end be the variable cross-section part.
2. fan head assembly according to claim 1, which is characterized in that the variable cross-section part is located at the air duct (11)
Top and/or middle part.
3. fan head assembly according to claim 1, which is characterized in that the side wall of the outlet section (10) is inside from bottom to up
It shrinks to form the variable cross-section part.
4. fan head assembly according to claim 1, which is characterized in that the nozzle (12) is above and below the air duct (11)
Direction extends, and the quantity of the variable cross-section part is multiple, upper and lower of multiple variable cross-section parts along the air duct (11)
It is arranged to interval.
5. fan head assembly according to claim 1, which is characterized in that first conducting element (21) is plate-like, and described
One conducting element (21) extends obliquely downward from the upper end of the air duct (11).
6. fan head assembly according to claim 5, which is characterized in that first guide face (21a) is headed on described in
Nozzle (12) is guiding partial admission flow to the nozzle (12).
7. fan head assembly according to claim 6, which is characterized in that the nozzle (12) is set to the of outlet section (10)
Side, first conducting element (21) are set to second side opposite with first side of outlet section (10), and described first leads
The inner wall for flowing the edge of part (21) and the second side of the outlet section (10) is tightly connected.
8. fan head assembly according to claim 5, which is characterized in that first guide face (21a) is headed on described in
The side wall of outlet section (10), the edge of first conducting element (21) and the side wall of the outlet section (10) are tightly connected.
9. fan head assembly according to claim 1-8, which is characterized in that the guiding device (20) further includes position
The second conducting element (22) above the first conducting element (21), second conducting element (22), which has, tilts upward the second of extension
Guide face (22a), the lower end of second guide face (22a) are connect with the upper end of first guide face (21a), and described second
The airflow area in the air duct (11) at the lower end of guide face (22a) is less than at the upper end of second guide face (22a)
The airflow area in air duct (11).
10. fan head assembly according to claim 9, which is characterized in that second guide face (22a) be plane, cambered surface,
Or the combination of plane and cambered surface；And/or first guide face (21a) is the group of plane, cambered surface or plane and cambered surface
It closes.
11. fan head assembly according to claim 1, which is characterized in that the outlet section (10) includes preceding outlet air part (14)
With rear outlet air part (15), the preceding outlet air part (14) and rear outlet air part (15) limit the air duct (11), the nozzle jointly
(12) it is set on front side of the preceding outlet air part (14), after the guiding device (20) is sealedly attached to the rear outlet air part (15)
Side.
12. a kind of no leaf blowing apparatus, which is characterized in that wanted including pedestal, the dynamical system being set in pedestal and right
The described in any item fan head assemblies of 1-11 are sought, the fan head assembly is connect to receive by the air inlet (13) with the pedestal
The inlet air flow of the dynamical system generation simultaneously passes through the nozzle (12) sending inlet air flow.
13. no leaf blowing apparatus according to claim 12, which is characterized in that the no leaf blowing apparatus is no leaf wind
Fan, without leaf hair dryer, without leaf warm-air drier, without leaf humidifier and without any one of leaf air-cooler.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711376203.0A CN108180175B (en) | 2017-12-19 | 2017-12-19 | A kind of fan head assembly and without leaf blowing apparatus |
| 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 |
|---|---|---|---|
| CN201711376203.0A CN108180175B (en) | 2017-12-19 | 2017-12-19 | A kind of fan head assembly and without leaf blowing apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108180175A CN108180175A (en) | 2018-06-19 |
| CN108180175B true CN108180175B (en) | 2019-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711376203.0A Active CN108180175B (en) | 2017-12-19 | 2017-12-19 | A kind of fan head assembly and without leaf blowing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108180175B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201779080U (en) * | 2010-05-21 | 2011-03-30 | 海尔集团公司 | Bladeless fan |
| GB201119500D0 (en) * | 2011-11-11 | 2011-12-21 | Dyson Technology Ltd | A fan assembly |
| GB2500008B (en) * | 2012-03-06 | 2015-06-03 | Dyson Technology Ltd | A fan assembly |
| CN102661294B (en) * | 2012-04-10 | 2014-10-29 | 宁波宏钜电器科技有限公司 | Bladeless fan |
| CN206190615U (en) * | 2016-09-30 | 2017-05-24 | 广东美的环境电器制造有限公司 | A aircraft nose and bladeless fan for bladeless fan |
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2017
- 2017-12-19 CN CN201711376203.0A patent/CN108180175B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108180175A (en) | 2018-06-19 |
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