CN109208518A - Blower - Google Patents
Blower Download PDFInfo
- Publication number
- CN109208518A CN109208518A CN201710517103.9A CN201710517103A CN109208518A CN 109208518 A CN109208518 A CN 109208518A CN 201710517103 A CN201710517103 A CN 201710517103A CN 109208518 A CN109208518 A CN 109208518A
- Authority
- CN
- China
- Prior art keywords
- bushing
- volute section
- aerofoil fan
- air
- air duct
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
- E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
- E01H1/0863—Apparatus loosening or removing the dirt by blowing and subsequently dislodging it at least partially by suction ; Combined suction and blowing nozzles
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
- E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
- E01H2001/0881—Details for pneumatically dislodging or removing not related to the mouth-piece
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of blowers, comprising: casing, including volute section and air duct portion, volute section have the first air port, and air duct portion has the second air port；Aerofoil fan is placed in volute section；Motor；Bushing, with make air-flow along the inside air duct that straight path advances, interconnecting part is set on the wall of bushing, bushing can be converted between the first position and the second position, wherein in first position, bushing enters volute section and the in a circumferential direction aerofoil fan, and interconnecting part is connected to inner passage and the first air port, and aerofoil fan is rotated with first direction；In the second position, bushing is retracted into air duct portion from volute section, and aerofoil fan is rotated with second direction, and first direction is opposite with second direction.By changing bushing locations, it is able to achieve aerofoil fan under blowing mould formula and is equivalent in straight-tube portion, guarantee biggish intake, realize preferable airflow effects；Aerofoil fan uses in volute section as centrifugal fan under suction mode, has preferable adsorption capacity.
Description
Technical field
The present invention relates to power tools, more particularly to a kind of blower.
Background technique
Blower is a kind of common Clean- electric tool in open air, is mainly used for the cleaning and collection of fallen leaves.Blower
The leaf on ground is blown away by blowing and is either sucked leaf in collecting bag by air draught.
Blower needs are provided simultaneously with and blow and inhales function, and a kind of traditional scheme is to pass through to retube using centrifugal fan
Or pressure-vaccum conversion is realized in two-tube switching.But this scheme, retube trouble.Another way in traditional technology is:
Realize pressure-vaccum with pipe by the positive and negative rotation of aerofoil fan.But the defect of this scheme is that suction or the performance inhaled are weak.
Summary of the invention
Based on this, it is necessary to realize the pressure-vaccum problem weak with the performance inhaled or inhaled when pipe for aerofoil fan, propose one kind
Hair dryer of the pressure-vaccum with pipe.
A kind of blower, comprising:
Casing has the first air port including volute section and the air duct portion being connected with volute section in the volute section, described
There is the second air port in the portion of air duct；
Aerofoil fan is placed in the volute section；
Motor, for driving the aerofoil fan to work；
Bushing is movably disposed in the casing, has the inside for making air-flow advance along the direction far from volute section
Air duct is provided on the wall of the bushing and is connected to the internal air duct and extraneous interconnecting part, and the bushing can be in first position
It is converted between the second position, wherein the bushing enters the volute section and in a circumferential direction around institute in first position
State aerofoil fan, the interconnecting part is connected to the inner passage and the first air port, the aerofoil fan by the motor driven with
First direction rotation；In the second position, the bushing is retracted into air duct portion from volute section, and the aerofoil fan is by the motor
Driving is rotated with second direction, and first direction is opposite with second direction.
Above-mentioned hair dryer, aerofoil fan are set in volute section, but by changing bushing locations, are able to achieve blowing mould formula lower axle
Flow fan is equivalent in straight-tube portion, guarantees biggish intake, realizes preferable airflow effects；Suction mode lower axle stream wind
Fan is used as centrifugal fan to use in volute section, has preferable adsorption capacity, thus realizing pressure-vaccum with pipe using aerofoil fan
When guarantee equal better performances under blowing mould formula and suction mode.
In a wherein embodiment, the outside in the air duct portion is provided with operating parts, to drive the bushing to move
It is dynamic.
In a wherein embodiment, the bushing have across the air duct portion operation portion, the operation portion with
The tube wall in the air duct portion is slidably matched.
In a wherein embodiment, when the bushing is moved to its first position, on bushing moving direction, bushing
End also abut to the inner wall of the volute section.
In a wherein embodiment, leading between the second air port and aerofoil fan is also set up in the volute section
Leaf, when the aerofoil fan is rotated by the motor driven with first direction, the guide vane is not rotated, and the bushing is covered with described
On the outside of guide vane, when the aerofoil fan is rotated by the motor driven with second direction, the guide vane is rotated with second direction.
In a wherein embodiment, the motor shaft of the motor protrudes into the volute section, the aerofoil fan installation
On the motor shaft, the guide vane and the motor shaft are cooperated by unilateral bearing.
In a wherein embodiment, conducting element is additionally provided on the end of the motor shaft, the conducting element protrudes into
In the air duct portion.
In a wherein embodiment, the moving direction of the bushing is axial consistent or parallel with motor.
In a wherein embodiment, along the axial direction of motor, the first air port is located at spiral case in the air inlet direction in the second air port
The bottom in portion.
In a wherein embodiment, second air port is connected with flexible duct.
Detailed description of the invention
Fig. 1 is in schematic diagram when blowing mould formula for the blower of an embodiment of the present invention；
Fig. 2 is schematic diagram of the bushing of blower shown in Fig. 1 under blowing mould formula；
Fig. 3 is in schematic diagram when suction mode for the blower of an embodiment of the present invention；
Fig. 4 is schematic diagram of the bushing of blower shown in Fig. 3 under suction mode；
Fig. 5 is the side view of Fig. 4.
Related elements reference numeral in figure is as follows:
100, blower 110, casing 112, volute section
1123, the first air port 114, air duct portion 1143, the second air port
1145, flexible duct 120, motor 122, motor shaft
130, aerofoil fan 140, bushing 142, interconnecting part
150, guide vane 160, conducting element
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give preferable embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to this
Embodiment described in text.On the contrary, the purpose of providing these embodiments is that making the understanding to the disclosure
It is more thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.On the contrary, when element is referred to as " directly existing " another element "upper",
Intermediary element is then not present.Term as used herein "vertical", "horizontal", "left" and "right" and similar statement are only
It is for illustrative purposes.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more
Any and all combinations of relevant listed item.
With reference to the accompanying drawing, the better embodiment of blower is described in detail.
With reference to Fig. 1, Fig. 3, the blower 100 of an embodiment of the present invention, including casing 110, motor 120, setting are in machine
Aerofoil fan 130 in shell 110, wherein motor 120 is to drive aerofoil fan 130 to work.
Casing 110 includes volute section 112 and the air duct portion 114 being connected with volute section 112.Have the in volute section 112
One air port 1123, and there is the second air port 1143 in air duct portion 114.Air flue in volute section 112 is spiral.Air-flow is in snail
Advance in shell portion 112 along helix.Bushing 140 is additionally provided in air duct portion 114, the bushing 140 have make air-flow along straight line or
The inside air duct that arc trajectory advances.I.e. when air-flow from bushing 140 by when, be along straight line or arc trajectory towards predeterminated target
(i.e. the second air port 1143) advances, different from curvilinear flow track of the air-flow in volute section 112.For example, bushing 140 can be in
It is rounded or rectangular to can be cylindric or cuboid, the section of the inside air flue of bushing 140 for column.
Bushing 140 is movably disposed in casing 110, and the internal air duct of connection and outer is provided on the wall of bushing 140
The interconnecting part 142 on boundary.Bushing 140 can be converted between the first position and the second position in casing 110, wherein at first
It sets, as depicted in figs. 1 and 2,140 one end of bushing enters in volute section 112 and in a circumferential direction around aerofoil fan 130, even
Logical portion 142 is connected to the first air port 1123 in 140 inner passage of bushing and volute section 112, and aerofoil fan 130 is by motor at this time
120 drivings are rotated with first direction, and the direction of rotation of aerofoil fan 130 is set as from 1123 air-breathing of the first air port at this time, from the
The blowing of two air ports 1143, blower 100 are in blowing mould formula.The first air port 1123 is air inlet at this time, and the second air port 1143 is
Air port.
Further, when bushing 140 is moved to its first position, on the moving direction of bushing 140, the end of bushing 140
Portion also abuts to the inner wall of volute section 112.In this way, bushing 140 is in a circumferential direction by aerofoil fan 130 and volute section 112
Internal air flue isolation, and the inner wall of volute section 112 is then from the side of aerofoil fan 130 isolation aerofoil fan 130 and volute section 112
Inside air flue, the air-flow entered from the first air port 1123 can only enter inside bushing 140 from interconnecting part 142, and leakage is few, protects
Air quantity when card blowing.
In the second position, as shown in Figures 3 to 5, the end of bushing 140 is retracted into air duct portion 114 from volute section 112,
Aerofoil fan 130 is driven by motor 120 and is rotated with second direction at this time, and first direction is opposite with second direction.Due to axis stream wind
Fan 130 is to reversely rotate compared with state shown in Fig. 1, and blower 100 is blown from 1143 air-breathing of the second air port from the first air port 1123,
Blower 100 is in suction mode.The first air port 1123 is dust mouth at this time, and the second air port 1143 is suction inlet.
By the positive and negative rotation of aerofoil fan 130, successfully realize pressure-vaccum with managing, do not need to retube or two-tube switching i.e.
Pressure-vaccum conversion can be achieved.Spiral case is usually that centrifugal fan is cooperated to use.Although and aerofoil fan 130 is always situated in volute section
In 112, still, under blowing mould formula, bushing 140 covers on the outside of aerofoil fan 130, therefore volute section 112 is made to fail, aerofoil fan
130 are equivalent in straight tube, can normally use as aerofoil fan, and the gas sucked from the first air port 1123 is along motor
120 flow axially through bushing 140 after blow out, guarantee biggish intake, realize preferable airflow effects.Under suction mode, bushing
140 exit from volute section 112, do not influence volute section 112 and normally play a role, and aerofoil fan 130 is when in as centrifugation at this time
Fan is using, if suction mode is executed still in air duct portion 114 compared to aerofoil fan 130 with better adsorption capacity, thus
Guarantee equal better performances under blowing mould formula and suction mode when realizing pressure-vaccum with pipe using aerofoil fan 130.
The mode for keeping bushing 140 mobile is a variety of.For example, the outside in air duct portion 114 may be provided with operating parts, to drive lining
Set 140 is mobile.For another example, it can also be that bushing has the operation portion across air duct portion 114, the pipe of the operation portion and air duct portion 114
Wall is slidably matched.
In one embodiment, the air inlet direction in the first air port 1123 and the second air port 1143 is set as vertically, wherein
First air port 1123 is set as the axial direction positioned at the bottom of volute section 112, air inlet or air-out direction perpendicular to motor 120, and
The air inlet or air-out direction in the second air port 1143 are then along the axial direction of motor 120.In this way, under blowing mould formula, air-flow is from the second air port
1143 along motor 120 axial outlet air, and under suction mode, then dust collect plant can be connected in the lower section of volute section 112, so that pressure-vaccum
It operates conveniently, improves working efficiency.
In addition, when the first air port 1123 is set as the bottom positioned at volute section 112, the air inlet wind direction in the first air port 1123 and
The air inlet wind direction in the second air port 1143 can also have certain inclination.Further, flexible wind is connected on the second air port 1143
Pipe 1145.It blows or sucks under mode, flexible duct 1145 can expand job area.It can when first air port 1123 is under suction mode
To connect dust collect plant, prevent dusty.
In one embodiment, motor 120 is clockwise and anticlockwise motor, and aerofoil fan 130 can be driven with first direction or second
Direction rotates, and first direction is opposite with second direction.For example, it is assumed that from if first direction is set in terms of a certain angle as side clockwise
To for rotationally clockwise, then second direction is counterclockwise axis stream wind when aerofoil fan 130 is rotated with first direction
To rotate in an anti-clockwise direction when fan 130 is rotated with second direction, on the contrary it is also opposite.
In one embodiment, motor 120, volute section 112, air duct portion 114 are set gradually in the axial direction of motor 120, with
Simplest mode configures.For example, ginseng Fig. 1 or Fig. 3, motor 120 is located at the rightmost side, and volute section 112 is located at centre.Wherein, electric
The motor shaft 122 of machine 120 extend into volute section 112 and extends in air duct portion 114.Motor 120 is fixed to spiral case from right side
Portion 112；Or motor 120 is mounted in an external support shell, which is fixedly connected with volute section 112, or external
Supporting shell forms casing 110 with volute section 112 together.In this way, along the axial movement of motor 120 when bushing 140 is mobile, while
It is the axial movement along aerofoil fan 130.In addition, in the case where motor 120 is placed on the rightmost side, 140 moving direction of bushing
It is also possible to axially vertical with motor 120.At this point, the motor shaft of motor 120 can pass through deceleration drive shaft flow fan
130 work.
In addition, motor 120 be also possible to biasing, be with air duct portion 114 it is arranged side by side, motor 120 passes through transmission mechanism
Aerofoil fan 130 and guide vane 150 is driven to rotate such as belt.At this point, aerofoil fan 130, bushing 140 are edge and motor 120
Axial parallel direction is mobile.
In another embodiment, blower 100 further includes being placed in volute section 112, be located at the second air port 1143 with
Guide vane 150 between aerofoil fan 130.Guide vane 150 is selectively driven to rotate.Wherein, aerofoil fan 130 is by motor 120
When driving is rotated with first direction, i.e., under blowing mould formula, guide vane 150 is not rotated, and bushing 140 is also covered with the outside of guide vane 150.Axis stream
When fan 130 is rotated by the driving of motor 120 with second direction, i.e., under suction mode, guide vane 150 is actuated to second direction rotation.
Guide vane 150 is cooperated in a manner of unidirectional drive with motor shaft 122, or with the drive shaft that is driven by motor shaft 122
Cooperation.For example, the motor shaft 122 of motor 120 protrudes into volute section 112, and aerofoil fan 130 is fixedly mounted on motor shaft 122,
Guide vane 150 and motor shaft 122 are cooperated by unilateral bearing.
In addition, being additionally provided with conducting element 160 on the end of motor shaft 122, which is protruded into air duct portion 114.It leads
The end of stream part 160 is arranged to bullet-shaped, and the entrance of leaf is conducive under suction mode.
In addition, guide vane 150 is placed in volute section 112 using the flabellum of centrifugal fan.Under suction mode, guide vane 150 is on the one hand
The effect of centrifugal fan is also functioned to, improves absorption energy, and guide vane 150 also acts as the effect for crushing leaf.Under blowing mould formula, guide vane
150 do not rotate, and only aerofoil fan 130 works, and guide vane 150 does not interfere aerofoil fan 130 normally to dry.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned
The all possible combination of each technical characteristic in embodiment is all described, as long as however, the combination of these technical characteristics
There is no contradictions, all should be considered as described in this specification.
Only several embodiments of the present invention are expressed for embodiment described above, and the description thereof is more specific and detailed, but
It cannot be understood as the limitations to patent of invention range.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of blower characterized by comprising
Casing has the first air port, the air duct in the volute section including volute section and the air duct portion being connected with volute section
There is the second air port in portion；
Aerofoil fan is placed in the volute section；
Motor, for driving the aerofoil fan to work；
Bushing is movably disposed in the casing, has the inside air duct for making air-flow advance along the direction far from volute section,
It is provided on the wall of the bushing and is connected to the internal air duct and extraneous interconnecting part, the bushing can be in first position and second
It is converted between position, wherein the bushing enters the volute section and in a circumferential direction around the axis stream in first position
Fan, the interconnecting part are connected to the inner passage and the first air port, and the aerofoil fan is by the motor driven with first party
To rotation；In the second position, the bushing is retracted into air duct portion from volute section, the aerofoil fan by the motor driven with
Second direction rotation, first direction are opposite with second direction.
2. blower according to claim 1, which is characterized in that the outside in the air duct portion is provided with operating parts, to
Drive the bushing mobile.
3. blower according to claim 1, which is characterized in that the bushing has the operation across the air duct portion
Portion, the operation portion and the tube wall in the air duct portion are slidably matched.
4. blower according to claim 1, which is characterized in that when the bushing is moved to its first position, in bushing
On moving direction, the end of bushing also abuts to the inner wall of the volute section.
5. blower according to claim 1, which is characterized in that also set up in the volute section positioned at the second air port and axis
Guide vane between flow fan, when the aerofoil fan is rotated by the motor driven with first direction, the guide vane is not rotated, institute
Bushing is stated covered on the outside of the guide vane, when the aerofoil fan is rotated by the motor driven with second direction, the guide vane with
Second direction rotation.
6. blower according to claim 5, which is characterized in that the motor shaft of the motor protrudes into the volute section, institute
It states aerofoil fan to be mounted on the motor shaft, the guide vane and the motor shaft are cooperated by unilateral bearing.
7. blower according to claim 5, which is characterized in that it is additionally provided with conducting element on the end of the motor shaft,
The conducting element protrudes into the air duct portion.
8. blower according to claim 1, which is characterized in that the moving direction of the bushing and the axial direction of motor are consistent
Or it is parallel.
9. blower according to claim 1, which is characterized in that axis of the air inlet direction in the second air port along aerofoil fan
To the first air port is located at the bottom of volute section.
10. blower according to claim 1, which is characterized in that second air port is connected with flexible duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710517103.9A CN109208518B (en) | 2017-06-29 | 2017-06-29 | Blowing and sucking machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710517103.9A CN109208518B (en) | 2017-06-29 | 2017-06-29 | Blowing and sucking machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109208518A true CN109208518A (en) | 2019-01-15 |
| CN109208518B CN109208518B (en) | 2020-08-14 |
Family
ID=64976733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710517103.9A Active CN109208518B (en) | 2017-06-29 | 2017-06-29 | Blowing and sucking machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109208518B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3840831A1 (en) * | 1988-12-03 | 1990-06-07 | Gerhard Peters | Control device in a blower-dependent suction-extraction conduit |
| CN2225844Y (en) * | 1995-06-20 | 1996-05-01 | 吴世界 | Combined gun for blowing and sucking dust |
| JPH09327421A (en) * | 1996-06-13 | 1997-12-22 | Seiichi Yoda | Vacuum cleaner |
| CN2390547Y (en) * | 1999-09-06 | 2000-08-09 | 周武巧 | Blowing-off and suction two-purpose dust-collecting gun |
| JP2001161603A (en) * | 1999-12-09 | 2001-06-19 | Makita Corp | Suction/discharge apparatus with dual-purpose nozzle |
| CN105877606A (en) * | 2015-02-12 | 2016-08-24 | 安德烈·斯蒂尔股份两合公司 | Suction/blowing device |
| WO2016179473A1 (en) * | 2015-05-07 | 2016-11-10 | Black & Decker Inc. | Axial fan blower and vacuum |
-
2017
- 2017-06-29 CN CN201710517103.9A patent/CN109208518B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3840831A1 (en) * | 1988-12-03 | 1990-06-07 | Gerhard Peters | Control device in a blower-dependent suction-extraction conduit |
| CN2225844Y (en) * | 1995-06-20 | 1996-05-01 | 吴世界 | Combined gun for blowing and sucking dust |
| JPH09327421A (en) * | 1996-06-13 | 1997-12-22 | Seiichi Yoda | Vacuum cleaner |
| CN2390547Y (en) * | 1999-09-06 | 2000-08-09 | 周武巧 | Blowing-off and suction two-purpose dust-collecting gun |
| JP2001161603A (en) * | 1999-12-09 | 2001-06-19 | Makita Corp | Suction/discharge apparatus with dual-purpose nozzle |
| CN105877606A (en) * | 2015-02-12 | 2016-08-24 | 安德烈·斯蒂尔股份两合公司 | Suction/blowing device |
| WO2016179473A1 (en) * | 2015-05-07 | 2016-11-10 | Black & Decker Inc. | Axial fan blower and vacuum |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109208518B (en) | 2020-08-14 |
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