CN105757418B - Rotary limit device and household electrical appliance - Google Patents
Rotary limit device and household electrical appliance Download PDFInfo
- Publication number
- CN105757418B CN105757418B CN201610292571.6A CN201610292571A CN105757418B CN 105757418 B CN105757418 B CN 105757418B CN 201610292571 A CN201610292571 A CN 201610292571A CN 105757418 B CN105757418 B CN 105757418B
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- plate
- driving plate
- rotary
- arc
- fixation kit
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- 239000003381 stabilizer Substances 0.000 claims description 15
- 238000012797 qualification Methods 0.000 abstract description 2
- 125000006850 spacer group Chemical group 0.000 description 18
- 230000001939 inductive effect Effects 0.000 description 14
- 230000000903 blocking effect Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 5
- 210000001320 hippocampus Anatomy 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241001061140 Caulophryne pelagica Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
- F16M11/12—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction
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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
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of rotary limit devices, including fixation kit, rotate horizontally component and vertical rotary component, the horizontal rotation component is rotatably arranged on the fixation kit, the vertical rotary component is fixed on the horizontal rotation component, which is connected to a through-flow blower unit.It uses multiple machine structure qualification hard-over, meets cabling requirement.The invention also discloses a kind of household electrical appliance.
Description
Technical field
The present invention relates to a kind of household electrical appliance, which has rotary limit device.
Background technology
In the prior art, 200820300531.2 rotating base for being related to television set, the pedestal include pop-up and subiculum,
Pop-up is mounted in subiculum and can horizontally rotate with respect to subiculum.Television set is fixedly mounted in pop-up, and television set can be with pop-up one
It plays opposite subiculum to horizontally rotate, achievees the purpose that adjust television set Horizontal viewing angle.200610113231.9 sander bottom
Base device includes terminal pad and chassis, and chassis is equipped with through-hole, and terminal pad is placed in the through-hole on chassis and the two is to be threadedly coupled,
The bottom surface of the terminal pad be equipped with for drive chassis rotate roll over flat spanner of putting upside down.Spanner can do mounting or dismounting tools, and
Connection pan bottom can be stored.200520125319.3 providing a kind of four direction rotating bases, including an intermediate support and lower branch
Frame, intermediate support have bottom plate 330 and both side plate.Lower bracket has top plate and bottom plate 330, and lower bracket is connected and fixed with chassis.
The case realizes the rotation in four directions by damping mechanism, but since the problem in design can not limit corner.
200420098097.6 being related to rotary base of flat screen television, including fixed frame and pedestal.A bracket is connected on the fixed frame,
It is provided with jack, arc guide barrel and card slot on bracket, a stud is fitted in jack, multiple spring shims, bullet are set on stud
A nut is screwed on the stud on spring gasket top, the spring shim periphery of bottom is equipped with downward projection of strip.The resistance of the case
Buddhist nun mechanism is realized by spring shim.
Invention content
The present invention proposes a kind of rotary limit device, limits hard-over using mechanical system, meets cabling requirement.
The technical proposal of the invention is realized in this way：
A kind of rotary limit device, including fixation kit, horizontal rotation component and vertical rotary component, the horizontal rotation
Turn component to be rotatably arranged on the fixation kit, the vertical rotary component is fixed on the horizontal rotation component, should
Vertical rotary component is connected to a through-flow blower unit, which is characterized in that
The fixation kit includes that driving plate, the lower driving plate bottom are equipped with a boss, for connecting circuit device
The top of the clamping portion of part and concentric arc-shaped rack and arc groove, the boss is equipped with slideway, the extending direction of the slideway
It is equipped at least one guide surface, which forms a mounting groove in the other side of upper driving plate, and the mounting groove is through a through-hole
It is connected to the clamping portion；
The horizontal rotation component includes the second motor, upper driving plate, support plate and travel switch, and the support plate is solid
It is scheduled in the upper driving plate, which is connected to the vertical rotary component,
The upper driving plate is equipped with arc-shaped slot and driving hole, and the driving hole is slidably equipped with a drive link, the biography
The slideway is stretched into the end of lever, and in the guiding lower slider of the guide surface, and second motor is fixed on the upper driving
On plate, the output shaft of second motor passes through the arc-shaped slot, the output of second motor to be pivotally connected to a gear, the tooth
Wheel is engaged to the arc-shaped rack, and the arc groove is stretched into the end of the gear, and the travel switch is fixed on described
In driving plate, the output end of the trip switch is connected to the through-flow blower unit, the startup piece patch of the trip switch through conducting wire
On the drive link.
In the rotary limit device of the present invention, the fixation kit further includes a positioning plate, the positioning plate and lower drive
Movable plate is connected with each other, which is located at the outside of lower driving plate, which is equipped with the connecting groove being arranged symmetrically and counterweight tank,
One end of the connecting groove is connected to the mounting groove, and the other end is stretched out from the outer rim of the positioning plate.
In the rotary limit device of the present invention, slider is equipped between the lower driving plate and upper driving plate.
In the rotary limit device of the present invention, the fixation kit further includes a bottom plate, and the bottom plate is covered in described
Positioning plate bottom, the bottom plate are equipped with tread plate.
In the rotary limit device of the present invention, the vertical rotary component includes connecting plate, shaft and two stabilizer blades, described
Stabilizer blade is fixed in the support plate, and the both sides of the connecting plate are respectively connected to the shaft and through-flow blower unit, described turn
The both ends of axis are rotatably inserted the stabilizer blade respectively, are cased with card-bit part and multiple frictional disks in the shaft, and a screw is by the card
Position part and frictional disk lock are provided with a screens slot on the side of the stabilizer blade, the card-bit part, which extends along the shaft
Direction be equipped with a screens portion, which stretches into the screens slot.
A kind of noise reduction draft mechanism, including impeller and shell, the impeller are located in the shell, which is characterized in that described
Shell forms a low discharge air inlet, high flow capacity air inlet and air outlet, and the impeller is used for the low discharge air inlet
It introduces with the air-flow of high flow capacity air inlet and is drawn from the air outlet.
A kind of through-flow blower unit, including four groups of impellers and annular outer cover, four groups of impellers are symmetrically arranged at the shell
It is interior, which is characterized in that
The shell include one in molded part, outer molded part, guiding piece and four spacers, the outer molded part it is interior
Edge sets spaced multiple first blocking portions, and the outer rim of the guiding piece is equipped with cricoid second blocking portion, second blocking
Portion is fixed on first blocking portion, and the both sides of the spacer are equipped with demarcation strip, and the demarcation strip of the same spacer will
The shell is divided into mutually independent air inducing chamber, at least one set of air inducing intracavitary, the outer molded part, guiding piece and
Spacer is partitioned into a low discharge space, and the spacer is equipped with low discharge air inlet,
The outer molded part, spacer and interior molded part are partitioned into a high flow capacity space, and the impeller is located at height stream
In quantity space, the outer molded part is equipped with high flow capacity air inlet, the close high flow capacity space of the high flow capacity air inlet
Side is equipped with multiple first floors, plane where multiple first floor perpendicular to the impeller axis,
Air outlet is equipped between the outer molded part and the guiding piece, the guiding piece is equipped with water conservancy diversion on the air outlet
Portion, the outer molded part is by inlet guide, outlets direct portion and the arc for connecting the inlet guide and outlets direct portion
Portion forms, and the curved portion is obtuse angle, and the curved portion intersects at a wind noise with the inlet guide,
The spacer is equipped with volute tongue and connects the interconnecting piece of the volute tongue and low discharge air inlet, which prolongs
Long the line center of circle Jing Guo the impeller and the wind noise successively, the folder in the center of circle and the low discharge air inlet two end point connecting line
Angle is A, and the center of circle and the angle of two-end-point similar in the low discharge air inlet and high flow capacity air inlet are B, the center of circle and institute
The angle for stating high flow capacity air inlet two end point connecting line is C, A=B, B+C=90 °.
In the through-flow blower unit of the present invention, the lead of impeller is arranged in the outside of the volute tongue, is set on institute's spacer
Constrained bar, the lead are located in the constraining rod.
In the through-flow blower unit of the present invention, the impeller includes blade and first motor, and the first motor is fixed
In side of the demarcation strip far from the air inducing chamber, the blade is located between two demarcation strips, the first motor it is defeated
Shaft passes through the demarcation strip and is connected to the blade.
The side close to the high flow capacity space of the high flow capacity air inlet is additionally provided with multiple second floors, second rib
Plate is arranged between the adjacent impeller.
In the through-flow blower unit of the present invention, bending in the middle part of the diversion division.
A kind of cross flow fan comprising through-flow blower unit and rotary limit device.
This rotary limit device of the present invention uses multiple machine structure qualification hard-over, meets cabling requirement.
Description of the drawings
Fig. 1 is the schematic diagram of the axial-flow fan of the present invention；
Fig. 2 is the schematic diagram of the outer molded part of Fig. 1；
Fig. 3 is the partial view of Fig. 1, mainly eliminates outer molded part；
Fig. 4 is the section view of a position of Fig. 1；
Fig. 5 is the enlarged drawing of Fig. 4, illustrates air flow direction；
Fig. 6 is the rough schematic view of Fig. 5；
Fig. 7 is the schematic diagram of the spacer of Fig. 1；
Fig. 8 is the schematic diagram of the interior molded part of Fig. 1；
Fig. 9 is the schematic diagram in a direction of the rotary limit device of the present invention；
Figure 10 is another view of Fig. 9, and positioning plate is eliminated in figure；
Figure 11 is the section view of another position of Fig. 1；
Figure 12 is another view of Fig. 9, and main presentation rotates horizontally the internal structure of component；
Figure 13 is the schematic diagram of the upper driving plate of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes.
Rotary limit device 003 is mainly used for the support device of electrical equipment, allows the both direction of electrical equipment
Rotation, while electric wire is stretched out from the bottom of the rotary limit device 003.It with reference to attached drawing 9 to 13, is limited by electric wire, rotation limit
The corner of position device 003 is limited, determines the technical issues of corner is must to solve in ceiling structure, a variety of restrictions can more be kept away
Exempt from failure of apparatus, it is mechanical again more effective than electric.The rotary limit device 003 include fixation kit, rotate horizontally component with
And vertical rotary component.The horizontal rotation component is rotatably arranged on the fixation kit, and the vertical rotary component is solid
It is scheduled on the horizontal rotation component, which is connected to a through-flow blower unit 002.
The fixation kit of the present invention includes that driving plate 310,310 bottom of lower driving plate are equipped with a boss, are used for
Connect the clamping portion of circuit devcie 320 and concentric arc-shaped rack and arc groove.The top of the boss is equipped with slideway, the cunning
The extending direction in road is equipped at least one guide surface, which forms a mounting groove in the other side of the lower driving plate
317, which is connected to the clamping portion through a through-hole 318.Circuit devcie is mounted in clamping portion, the circuit devcie
320 electric wire via through holes stretch into mounting groove 317.On the one hand the boss is provided with the extraction space of conducting wire, be on the other hand used for
Push drive link 423.The quantity of boss determines travel limit point.
The horizontal rotation component includes the second motor 410, upper driving plate 420, support plate 430 and travel switch 440,
The support plate 430 is fixed in the upper driving plate 420, which is connected to the vertical rotary component.Motor and
Upper driving plate is covered by cover body 450.
The upper driving plate 420 is equipped with arc-shaped slot 421 and driving hole 422.The driving hole 422 is slidably equipped with one
The slideway is stretched into the end of drive link 423, the drive link 423, and in the guiding lower slider of the guide surface.The travel switch
440 are fixed in the upper driving plate 420, and the output end of the trip switch 440 is connected to the through-flow blower unit through conducting wire
002, the startup piece of the trip switch 440 is attached on the drive link 423.When upper driving plate 420 is rotated relative to lower driving plate 310
To certain angle, drive link 423 is moved to the guide surface of slideway, is slided under the action of the guide surface, starts stroke and opens
440 are closed, the rotation distance for driving upside down plate is ultimately limited.
Second motor 410 is fixed in the upper driving plate 420, and the output shaft of second motor 410 passes through
The output of the arc-shaped slot 421, second motor 410 is pivotally connected to a gear 411, which is engaged to the arc
Rack.The arc groove is stretched into the end of the gear 411, and gear 411 stretches into arc groove, the depth of the arc groove
The mechanical corner for limiting gear 411 is realized, auxiliary is completed and limits the corner for driving upside down plate.
The fixation kit further includes a positioning plate 320, and the positioning plate 320 and lower driving plate 310 are connected with each other, this is fixed
Position plate 320 is located at the outside of lower driving plate 310, which is equipped with the connecting groove 321 being arranged symmetrically and counterweight tank 323, should
One end of connecting groove 321 is connected to the mounting groove 317, and the other end is stretched out from the outer rim of the positioning plate 320.Counterweight tank 323
Interior setting weight 322 ensures that the weight of positioning plate 320 concentrates on immediate vicinity, improves stabilization of equipment performance.The side of connecting groove 321
Side is equipped with flange 324.
The fixation kit further includes a bottom plate 330, and the bottom plate 330 is covered in 320 bottom of the positioning plate, the bottom plate
330 are equipped with tread plate 331.Slider 424 is equipped between the lower driving plate 310 and upper driving plate 420.
The vertical rotary component includes connecting plate 510, shaft 520 and two stabilizer blades 530.The stabilizer blade 530 is fixed on institute
It states in support plate 430, the both sides of the connecting plate 510 are respectively connected to the shaft 520 and through-flow blower unit 002.Described turn
The both ends of axis 520 are rotatably inserted the stabilizer blade 530 respectively, and card-bit part 521 and multiple frictional disks are cased in the shaft 520
522, a screw 523 is by the card-bit part 521 and the lock of frictional disk 522 in the side of the stabilizer blade 530.Screw 523 is by frictional disk 522
It is pressed in the side of stabilizer blade 530, increasing friction force realizes that shaft 520 supports at any angle.The side of stabilizer blade 530 is equipped with bumps
Shape structure, further increases frictional force.A screens slot 524 is provided on the card-bit part 521, the stabilizer blade 530 is along the shaft 520
Extended direction is equipped with a screens portion 531, which stretches into the screens slot 524.It screens portion 531 must be in screens slot
It is moved in 524, the slewing area of through-flow blower unit 002.
Cross flow fan is standing to be placed in air-conditioning and fan, for radial air inducing.Existing cross flow fan is for example
201420644489.1 waiting described.201420644489.1 a kind of through-flow ducting assembly is disclosed, by being provided in air duct
The air guide structure extended along vertical direction prevents air-flow from being generated in air duct and is easy to adjust the direction that air-flow flows through air duct
Cause unstable outlet air, the vortex of abnormal sound and turbulent flow.Zhuhai Gree Electric Appliances proposes the solution of some mute wind turbines.
201110211073.1 and 201010522721.0 cross flow fan improves the position of volute tongue, improves interior flow field, lowers
Noise.201310101098.5 cross flow fan fin is set on the inside of spiral case, reduce periodical air-flow excitation.
200980141613.4 the axial-flow fan with 201110176647.6 reduces noise by changing blade construction.In existing skill
In art document,《The noise of cross flow fan is studied》（Chen Pei etc.）The structure and inlet air conditions for thinking change spiral case can be reduced and be made an uproar
Sound.《The experimental study of Turbulence in Exit of Cross Flow Fan and flow noise》（Sun Liqun etc.）Disclose heat exchanger convection current
The influence of field, heat exchanger influence inlet flow field.Document above can be used as the prior art to refer to.Noise directly affects electric appliance
Using effect, higher and higher to the environmental requirement of low noise in contemporary home life, the prior art cannot be met the requirements.
The present invention provides a kind of noise reduction draft mechanism, including impeller 200 and shell, the impeller 200 is located at the shell
It is interior.The shell forms a low discharge air inlet 141, high flow capacity air inlet 121 and air outlet 132, the impeller 200 and is used for
The air-flow of the low discharge air inlet 141 and high flow capacity air inlet 121 is introduced and is drawn from the air outlet 132.The present invention
Air inlet is divided into two parts, low discharge air inlet 141 introduces low-pressure air current, and flow is low, is mainly used for correcting vortex centers
Position, reduce by 210 resonance of blade, drop low wind noise.
As the present invention of Fig. 1 to 8 designs a through-flow blower unit 002 and through-flow electric appliance, through-flow electrical device on this basis
There are draft mechanism, e.g. cross flow fan 001.The cross flow fan 001 includes through-flow blower unit 002 and rotary limit device
003.Through-flow blower unit 002 includes four groups of impellers 200 and annular outer cover, and four groups of impellers 200 are symmetrically arranged at the shell
It is interior.This through-flow blower unit 002 is embodied as a part for axial-flow fan.Through-flow blower unit 002 is to reduce noise, simultaneously
Meet wiring to need as the main purpose.
In Fig. 5,6, the shell includes interior molded part 110, outer molded part 120, guiding piece 130 and four spacers
140.The both sides of the spacer 140 are equipped with demarcation strip 146, and the demarcation strip 146 of the same spacer 140 divides the shell
For mutually independent air inducing chamber 004.Four spacers 140 form four air inducing chambers 004, and air inducing chamber 004 works independently, only entrance
It is communicated with the flow field of outlet.On section, at least one set of air inducing chamber 004, the outer molded part 120, guiding piece
130 and spacer 140 be partitioned into a low discharge space 024, the spacer 140 is equipped with low discharge air inlet 141；It is described
Outer molded part 120, spacer 140 and interior molded part 110 are partitioned into a high flow capacity space 014, and the impeller 200 is located at the height
In flow space 014, the outer molded part 120 is equipped with high flow capacity air inlet 121.In the present embodiment, low discharge space 024 is
It is relatively low to refer to air pressure, the smaller space of flow.
The inner edge of the outer molded part 120 sets spaced multiple first blocking portions 122, the outer rim of the guiding piece 130
Equipped with cricoid second blocking portion 131, second blocking portion 131 is fixed on first blocking portion 122.Second blocking portion
131 be ring-type, and the first blocking portion 122 is spaced from each other, and space of second blocking portion 131 between the first blocking portion 122 is formed
One gap 034,034 area of gap can be 5 to 20mm2.Air-flow can be between the first blocking portion 122 spaced apart from each other（Gap）
Rapidly enter low discharge space 024.Since gap 034 is smaller, into low discharge space 024 after flow it is relatively low, formed low pressure.
The side close to the high flow capacity space 014 of the high flow capacity air inlet 121 is equipped with multiple first floors 123,
Axis of the plane at 123 place of multiple first floor perpendicular to the impeller 200.First floor 123 guides the flow direction of wind, resistance
Hinder the appearance of periodically turbulent flow.First floor 123 is equipped with notch 124 in the side far from low discharge air inlet 141.Notch
Flow velocity is most fast at 124, and smaller obstruction can improve air inducing efficiency.
Air outlet 132 is equipped between the interior molded part 110 and the guiding piece 130, the guiding piece 130 is in the outlet air
Mouth 132 is equipped with diversion division 134.The end face of diversion division 134 is arcuate structure, is hindered small.The interior molded part 110 is substantially round
Arc bool by inlet guide 115, outlets direct portion 117 and connects the inlet guide 115 and outlets direct portion 117
Curved portion 116 form.The curved portion 116 is obtuse angle, and angle is equal to high flow capacity air inlet 111 and low discharge air inlet
141 maximum central angle is equal to A+B+C.Fluid is rapidly flowed toward in the change of curved portion 116, forms Turbulent Boundary Layer,《Through-flow
The noise of wind turbine is studied》It is called spiral case.The curved portion 116 intersects at a wind noise with the inlet guide 115
118, which is to change the starting point of flow direction, the i.e. starting point of curved portion 116.
The spacer 140 is equipped with volute tongue 143 and connects the interconnecting piece of the volute tongue 143 and low discharge air inlet 141
144, the extended line of the interconnecting piece 144 center of circle Jing Guo the impeller 200 and the wind noise 118 successively.In axial-flow fan,
Nearby air-flow is easily disorderly for volute tongue 143, increases eddy current crack.One is used between the volute tongue 143 and low discharge air inlet 141 of the present invention
The interconnecting piece 144 of horizontal connects, and 143 front end of volute tongue is small to the obstruction of fluid, and the flow of low discharge air inlet 141 is low, reduces disorderly
Flow the thickness of boundary-layer.To improve the effect of interconnecting piece 144, the extended line of the interconnecting piece 144 passes through the impeller 200 successively
The center of circle and the wind noise.The structure can reduce noise 1 to 2dB.The lead of 200 motor of impeller can be mounted on the volute tongue 143
Rear is protected by interconnecting piece 144, provides enough installation spaces, while not influencing the work of air inducing chamber 004 again.Impeller 200
Lead is arranged in the outside of the volute tongue 143, and institute's spacer 140 is equipped with constraining rod 145, and the lead 230 is located at the constraint
In bar 145.145 anchor leg of constraining rod so that more compact structure.
The width of low discharge air inlet 141 and the air inlet should not be too large at a distance from high flow capacity air inlet 121, distance
Too big one side requires more spaces, on the other hand to influence air inducing efficiency.The center of circle and 141 two-end-point of low discharge air inlet
The angle of line is A, the angle in the center of circle and two-end-point similar in the low discharge air inlet 141 and high flow capacity air inlet 121
For B（String 142）, the center of circle and the angle of 121 two end point connecting line of high flow capacity air inlet are C, A=B, B+C=90 °.B most preferably takes
70 to 78 °.As shown, the angle of the present embodiment refers to air port projects the corresponding central angle of string in 200 outer circle of impeller.
The impeller 200 includes blade 210 and first motor 220, and the first motor 220 is fixed on the demarcation strip
146 side far from the air inducing chamber 004, the blade 210 are located between two demarcation strips 146, the first motor 220
Output shaft passes through the demarcation strip 146 and is connected to the blade 210.The high flow capacity air inlet 121 is flowed close to the height
The side of quantity space 014 is additionally provided with multiple second floors 129, which is arranged between the adjacent impeller 200.The
Two floors, 129 its main compartmentation, contacts with each other with demarcation strip 146, improves the sealing of air inducing chamber.
Air-flow mainly enters drainage lumens from high flow capacity air inlet.Connection structure between outer molded part and guiding piece is interval
, gap therein allows fraction to pass through, and air-flow enters low discharge area through the gap, finally enters drainage lumens.By setting
Set with the mutual remaining low discharge air inlet of high pressure admission mouth, be vortexed to blade center and move, the wind for reducing volute tongue is made an uproar.Low discharge is entered the wind
Mouth is spaced from each other with high flow capacity air inlet, low discharge opening, air-flow unobstructed flow straight with impeller center, reducing noise.This
Outside, in the present embodiment, 134 middle part bending of the diversion division.Diversion division 134 constitutes a warp architecture so that each air inducing chamber
The contact that is more uniformly distributed of flow field.
The parameter that the present invention does not limit takes well known range, noise that can reduce 2 to 8dB, and spectrum concentration is in 100-
150Hz.Preferably, wheel speed N=1300r/min.Impeller effective length h=744.31mm, impeller outer diameter D=105.7mm, directly
Diameter ratio ζ=0.8114,1A=90 ° internal blade angle β, periphery blade angles 2A=152.5 °, middle part of blade thickness t=1.1mm, blade
End thickness t1=0.8mm, blade tiltedly turn round angle γ=0.08 °/mm, number of blade z=30.Spiral case gap（Wind noise gap）=1mm,
Volute tongue gap 2mm, fan tongue distance air outlet 12mm.Under the preferable parameter value, noise can reduce 7dB or so, this is to quiet
Sound environment is extremely favourable.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (5)
1. a kind of rotary limit device, including fixation kit, horizontal rotation component and vertical rotary component, the horizontal rotation
Component is rotatably arranged on the fixation kit, and the vertical rotary component is fixed on the horizontal rotation component, this hangs down
Straight rotary components are connected to a through-flow blower unit, which is characterized in that
The fixation kit includes that driving plate, the lower driving plate bottom are equipped with a boss, for connecting circuit devcie
The top of clamping portion and concentric arc-shaped rack and arc groove, the boss is equipped with slideway, is set on the extending direction of the slideway
There is at least one guide surface, which forms a mounting groove in the other side of upper driving plate, which connects through a through-hole
To the clamping portion；
The horizontal rotation component includes the second motor, upper driving plate, support plate and travel switch, and the support plate is fixed on
In the upper driving plate, which is connected to the vertical rotary component,
The upper driving plate is equipped with arc-shaped slot and driving hole, and the driving hole is slidably equipped with a drive link, the drive link
End stretch into the slideway, and in the guiding lower slider of the guide surface, second motor is fixed in the upper driving plate,
The output shaft of second motor passes through the arc-shaped slot, the output of second motor to be pivotally connected to a gear, which nibbles
It is bonded to the arc-shaped rack, the arc groove is stretched into the end of the gear, and the travel switch is fixed on the upper driving
In plate, the output end of the trip switch is connected to the through-flow blower unit through conducting wire, and the startup piece of the trip switch is attached to institute
It states on drive link,
Wherein, the vertical rotary component includes connecting plate, shaft and two stabilizer blades, and the stabilizer blade is fixed in the support plate,
The both sides of the connecting plate are respectively connected to the shaft and through-flow blower unit, and the both ends of the shaft are rotatably inserted respectively
The stabilizer blade is cased with card-bit part and multiple frictional disks in the shaft, and a screw is by the card-bit part and frictional disk lock in the stabilizer blade
Side, a screens slot is provided on the card-bit part, which is equipped with a screens portion, the card along the extended direction of the shaft
Position portion stretches into the screens slot.
2. rotary limit device according to claim 1, which is characterized in that the fixation kit further includes a positioning plate,
The positioning plate and lower driving plate are connected with each other, which is located at the outside of lower driving plate, which is equipped with and is arranged symmetrically
Connecting groove and counterweight tank, one end of the connecting groove be connected to the mounting groove, the other end is stretched out from the outer rim of the positioning plate.
3. rotary limit device according to claim 1, which is characterized in that set between the lower driving plate and upper driving plate
There is slider.
4. rotary limit device according to claim 2, which is characterized in that the fixation kit further includes a bottom plate, institute
It states bottom plate and is covered in the positioning plate bottom, which is equipped with tread plate.
5. a kind of household electrical appliance, which is characterized in that filled including a through-flow blower unit and rotary stopper described in claim 1
It sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610292571.6A CN105757418B (en) | 2016-05-05 | 2016-05-05 | Rotary limit device and household electrical appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610292571.6A CN105757418B (en) | 2016-05-05 | 2016-05-05 | Rotary limit device and household electrical appliance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105757418A CN105757418A (en) | 2016-07-13 |
| CN105757418B true CN105757418B (en) | 2018-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610292571.6A Active CN105757418B (en) | 2016-05-05 | 2016-05-05 | Rotary limit device and household electrical appliance |
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| CN (1) | CN105757418B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106958539B (en) * | 2017-03-21 | 2024-01-12 | 奥克斯空调股份有限公司 | Volute structure of air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2267608B1 (en) * | 1974-04-11 | 1976-12-17 | Essilor Int | |
| CN2256199Y (en) * | 1995-12-12 | 1997-06-11 | 陈建湘 | Integrated vedio camera with internal universal pan and tilt head |
| CN201004690Y (en) * | 2007-02-01 | 2008-01-09 | 夏新电子股份有限公司 | Pan/tilt device of monitoring device |
| CN101469805B (en) * | 2007-12-29 | 2012-06-27 | 展祥科技(惠州)有限公司 | Flat television bracket |
| CN201184486Y (en) * | 2008-04-09 | 2009-01-21 | 展祥科技(惠州)有限公司 | Flat-plate television remote control wall hanging rack |
| CN201331661Y (en) * | 2009-01-06 | 2009-10-21 | 长春市佶达智能工程有限公司 | Omnidirectional electric tripod head for outdoor monitoring camera |
| CN102818102B (en) * | 2012-08-24 | 2015-03-25 | 黄学禹 | Tripod head of monitoring ball machine |
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| CN105757418A (en) | 2016-07-13 |
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