CN105757418A - Rotary limiting device and household appliance - Google Patents
Rotary limiting device and household appliance Download PDFInfo
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- CN105757418A CN105757418A CN201610292571.6A CN201610292571A CN105757418A CN 105757418 A CN105757418 A CN 105757418A CN 201610292571 A CN201610292571 A CN 201610292571A CN 105757418 A CN105757418 A CN 105757418A
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- plate
- driving plate
- assembly
- limit device
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- 230000001939 inductive effect Effects 0.000 description 14
- 241000237858 Gastropoda Species 0.000 description 13
- 238000010586 diagram Methods 0.000 description 6
- 210000001320 hippocampus Anatomy 0.000 description 4
- 238000013016 damping Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 241001061140 Caulophryne pelagica Species 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 230000002159 abnormal effect 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
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 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
- 239000012530 fluid Substances 0.000 description 1
- 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 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012797 qualification 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
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
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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
- F04D29/66—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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a rotary limiting device which comprises a fixed component, a horizontal rotating component and a vertical rotating component, wherein the horizontal rotating component is rotationally arranged on the fixed component; the vertical rotating component is fixedly arranged on the horizontal rotating component and is connected with a cross-flow induced air device. The rotary limit device adopts multiple mechanical structures to define a maximum turning angle and meets the wiring requirements. The invention further discloses a household appliance.
Description
Technical field
The present invention relates to a kind of household electrical appliance, these household electrical appliance have rotary limit device.
Background technology
In the prior art, 200820300531.2 relate to the rotating base of television set, and this base includes pop-up and subiculum, and pop-up is arranged in subiculum and can relatively subiculum horizontally rotate.Television set is fixedly mounted in pop-up, and television set can horizontally rotate with pop-up subiculum relatively, reaches to regulate the purpose of television set Horizontal viewing angle.200610113231.9 base device of sanding grinder include connection dish and chassis, chassis is provided with through hole, and connection dish is placed in the through hole on chassis and both are for threaded, and the bottom surface of described connection dish is provided with for driving what chassis rotated to roll over flat spanner of putting upside down.Spanner can do mounting or dismounting tools, and can receive connection tray bottom.200520125319.3 provide a kind of four direction rotating bases, including an intermediate support and lower carriage, intermediate support has base plate 330 and biside plate.Lower carriage has top board and base plate 330, and lower carriage is connected fixing with underframe.This case realizes the rotation in four directions by damping mechanism, but owing to the problem in design cannot limit corner.200420098097.6 relate to rotary base of flat screen television, including fixed mount and pedestal.Described fixed mount is connected to a bracket, bracket has jack, arc guide barrel and draw-in groove, in jack, is fitted with a stud, stud is set with multiple spring shim, being screwed with a nut on the stud on spring shim top, the spring shim periphery of bottom is provided with downward projection of card article.The damping mechanism of this case is realized by spring shim.
Summary of the invention
The present invention proposes a kind of rotary limit device, adopts mechanical system to limit hard-over, meets cabling requirement.
The technical scheme is that and be achieved in that:
A kind of rotary limit device, including fixation kit, horizontally rotate assembly and vertical rotary assembly, the described assembly that horizontally rotates is rotatably arranged on this fixation kit, described vertical rotary assembly horizontally rotates on assembly described in being fixed on, this vertical rotary assembly is connected to a through-flow blower unit, it is characterized in that
Described fixation kit includes driving plate, a boss it is provided with, for connecting the Access Division of circuit devcie and concentric arc-shaped rack and arc groove bottom described lower driving plate, the top of this boss is provided with slideway, the bearing of trend of this slideway is provided with the guide surface of at least one, this boss drives the opposite side of plate to form a mounting groove on described, and this mounting groove is connected to described Access Division through a through hole；
The described assembly that horizontally rotates includes the second motor, upper driving plate, gripper shoe and travel switch, and described gripper shoe is fixed on described upper driving plate, and this gripper shoe is connected to described vertical rotary assembly,
Described upper driving plate is provided with arc-shaped slot and driving hole, described driving hole is slidably provided with a drive link, described slideway is stretched in the end of this drive link, and in the guiding lower slider of this guide surface, described second motor is fixed on described upper driving plate, the output shaft described arc-shaped slot of traverse of this second motor described, the output shaft of this second motor is connected to a gear, this gear is engaged to described arc-shaped rack, described arc groove is stretched in the end of described gear, described travel switch is fixed in described upper driving plate, the outfan of the trip switch is connected to described through-flow blower unit through wire, the startup sheet of the trip switch is attached on described drive link.
In the rotary limit device of the present invention, described fixation kit also includes a location-plate, described location-plate and lower driving plate are connected with each other, this location-plate is positioned at the outside of lower driving plate, this location-plate is provided with the connecting groove and counterweight tank that are arranged symmetrically with, one end of this connecting groove is connected to described mounting groove, and the other end stretches out from the outer rim of described location-plate.
In the rotary limit device of the present invention, between described lower driving plate and upper driving plate, it is provided with wiper.
In the rotary limit device of the present invention, described fixation kit also includes a base plate, and described base plate covers bottom described location-plate, and this base plate is provided with tread plate.
In the rotary limit device of the present invention, described vertical rotary assembly includes connecting plate, rotating shaft and two legs, described leg is fixed in described gripper shoe, the both sides of described connecting plate are respectively connecting to described rotating shaft and through-flow blower unit, the two ends of described rotating shaft are rotatably inserted described leg respectively, this rotating shaft is cased with card-bit part and multiple frictional disk, this card-bit part and frictional disk are locked in the side of described leg by one screw, described card-bit part has a screens groove, this leg is provided with a screens portion along the direction that described rotating shaft extends, and this screens portion stretches into described screens groove.
A kind of noise reduction draft mechanism, including impeller and shell, described impeller is positioned at this shell, it is characterized in that, described shell forms a low discharge air inlet, high flow capacity air inlet and air outlet, and described impeller is for introducing the air-flow of described low discharge air inlet and high flow capacity air inlet and drawing from described 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 in described shell, it is characterised in that
Described shell includes profiled member in, outer profiled member, guiding piece and four distance pieces, the inner edge of described outer profiled member sets spaced multiple first stop part, the outer rim of described guiding piece is provided with the second stop part of ring-type, described second stop part is fixed on described first stop part, the both sides of described distance piece are provided with demarcation strip, described shell is divided into separate air inducing chamber by the demarcation strip of same described distance piece, described air inducing intracavity in least one set, described outer profiled member, guiding piece and distance piece are partitioned into a low discharge space, described distance piece is provided with low discharge air inlet,
Described outer profiled member, distance piece and interior profiled member are partitioned into a high flow capacity space, described impeller is positioned at this high flow capacity space, described outer profiled member is provided with high flow capacity air inlet, the side in the close described high flow capacity space of described high flow capacity air inlet is provided with multiple first floor, the plane at the plurality of first floor place is perpendicular to the axis of described impeller
It is provided with air outlet between described outer profiled member and described guiding piece, described guiding piece is provided with diversion division on this air outlet, described outer profiled member is by inlet guide, outlets direct portion and connects the curved portions in this inlet guide and outlets direct portion and forms, described curved portions is obtuse angle, described curved portions intersects at a wind noise with described inlet guide
Described distance piece is provided with snail tongue and connects the connecting portion of this snail tongue and low discharge air inlet, the extended line of this connecting portion sequentially passes through the center of circle of described impeller and described wind noise, the angle of this center of circle and described low discharge air inlet two end point connecting line is A, the angle of the two-end-point that this center of circle is close with described low discharge air inlet and high flow capacity air inlet is B, the angle of this center of circle and described 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-in wire of impeller is arranged in the outside of described snail tongue, and institute's distance piece is provided with constraining rod, and described lead-in wire is positioned at this constraining rod.
In the through-flow blower unit of the present invention, described impeller includes blade and the first motor, described first motor is fixed on the side away from described air inducing chamber of described demarcation strip, and described blade is between two demarcation strips, and the output shaft of this first motor is through described demarcation strip and is connected to described blade.
The side in the close described high flow capacity space of described high flow capacity air inlet is additionally provided with multiple second floor, and this second floor is arranged between adjacent described impeller.
In the through-flow blower unit of the present invention, bend in the middle part of described diversion division.
A kind of cross flow fan, it includes through-flow blower unit and rotary limit device.
This rotary limit device of the present invention adopts multiple machine structure qualification hard-over, meets cabling requirement.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the axial-flow fan of the present invention；
Fig. 2 is the schematic diagram of the outer profiled member of Fig. 1；
Fig. 3 is the partial view of Fig. 1, mainly eliminates outer profiled member；
Fig. 4 is the cross sectional 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 distance piece of Fig. 1；
Fig. 8 is the schematic diagram of the interior profiled member 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, eliminates location-plate in figure；
Figure 11 is the cross sectional view of another position of Fig. 1；
Figure 12 is another view of Fig. 9, and main presentation horizontally rotates the internal structure of assembly；
Figure 13 is the schematic diagram of the upper driving plate of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
Rotary limit device 003 is mainly used in a support arrangement of electric equipment, and the rotation of the both direction of its permission electric equipment, electric wire stretches out from the bottom of this rotary limit device 003 simultaneously.With reference to accompanying drawing 9 to 13, by the restriction of electric wire, the corner of rotary limit device 003 is limited, and structurally limiting this corner is to solve the technical problem that, multiple restriction is more avoided that failure of apparatus, and mechanical type is more effective than electric again.This rotary limit device 003 includes fixation kit 300, horizontally rotates assembly 400 and vertical rotary assembly 500.The described assembly 400 that horizontally rotates is rotatably arranged on this fixation kit 300, described vertical rotary assembly 500 be fixed on described in horizontally rotate on assembly 400, this vertical rotary assembly 500 is connected to a through-flow blower unit 002.
The fixation kit 300 of the present invention includes driving plate 310, is provided with a boss 311, for connecting the Access Division 312 of circuit devcie 320 and concentric arc-shaped rack 313 and arc groove 314 bottom described lower driving plate 310.The top of this boss 311 is provided with slideway 315, the bearing of trend of this slideway 315 is provided with the guide surface 316 of at least one, this boss 311 forms a mounting groove 317 at the opposite side of described lower driving plate, and this mounting groove 317 is connected to described Access Division 312 through a through hole 318.Circuit devcie is arranged in Access Division 312, and the electric wire via through holes of this circuit devcie 320 stretches in mounting groove 317.This boss 311 1 aspect is provided with the extraction space of wire, is used for promoting drive link 423 on the other hand.The quantity of boss 311 determines travel limit point.
The described assembly 400 that horizontally rotates includes the second motor 410, upper driving plate 420, gripper shoe 430 and travel switch 440, and described gripper shoe 430 is fixed on described upper driving plate 420, and this gripper shoe 430 is connected to described vertical rotary assembly 500.Motor and upper driving plate are covered by cover body 450.
Described upper driving plate 420 is provided with arc-shaped slot 421 and driving hole 422.Described driving hole 422 is slidably provided with a drive link 423, and described slideway 315 is stretched in the end of this drive link 423, and in the guiding lower slider of this guide surface 316.Described travel switch 440 is fixed in described upper driving plate 420, and the outfan of the trip switch 440 is connected to described through-flow blower unit 002 through wire, and the startup sheet of the trip switch 440 is attached on described drive link 423.After the relatively lower driving plate 310 of upper driving plate 420 turns to certain angle, drive link 423 moves the guide surface 316 to slideway 315, in the effect lower slider of this guide surface 316, starts travel switch 440, ultimately limit the rotation distance driving plate up and down.
Described second motor 410 is fixed on described upper driving plate 420, and the output shaft of this second motor 410 described is through described arc-shaped slot 421, and the output shaft of this second motor 410 is connected to a gear 411, and this gear 411 is engaged to described arc-shaped rack 313.Described arc groove 314 is stretched in the end of described gear 411, and gear 411 stretches into arc groove 314, and the degree of depth of this arc groove 314 achieves mechanical type and limits the corner of gear 411, completes auxiliary and limits the corner driving plate up and down.
Described fixation kit 300 also includes a location-plate 320, described location-plate 320 and lower driving plate 310 are connected with each other, this location-plate 320 is positioned at the outside of lower driving plate 310, this location-plate 320 is provided with the connecting groove 321 and counterweight tank 323 that are arranged symmetrically with, one end of this connecting groove 321 is connected to described mounting groove 317, and the other end stretches out from the outer rim of described location-plate 320.Weight 322 is set in counterweight tank 323, it is ensured that the weight of location-plate 320 concentrates on immediate vicinity, improves stabilization of equipment performance.The side of connecting groove 321 is provided with flange 324.
Described fixation kit 300 also includes a base plate 330, and described base plate 330 covers bottom described location-plate 320, and this base plate 330 is provided with tread plate 331.It is provided with wiper 424 between described lower driving plate 310 and upper driving plate 420.
Described vertical rotary assembly 500 includes connecting plate 510, rotating shaft 520 and two legs 530.Described leg 530 is fixed in described gripper shoe 430, and the both sides of described connecting plate 510 are respectively connecting to described rotating shaft 520 and through-flow blower unit 002.The two ends of described rotating shaft 520 are rotatably inserted described leg 530 respectively, and this rotating shaft 520 is cased with card-bit part 521 and multiple frictional disk 522, and this card-bit part 521 and frictional disk 522 are locked in the side of described leg 530 by a screw 523.Frictional disk 522 is pressed in the side of leg 530, increasing friction force by screw 523, it is achieved rotating shaft 520 supports at any angle.The side of leg 530 is provided with concave/convex-shaped structure, further increasing friction force.Having a screens groove 524 on described card-bit part 521, this leg 530 is provided with a screens portion 531 along the direction that described rotating shaft 520 extends, and this screens portion 531 stretches into described screens groove 524.Screens portion 531 must move in screens groove 524, the slewing area of through-flow blower unit 002.
Cross flow fan is standing is placed in air-conditioning and fan, for radially air inducing.Described in existing cross flow fan such as 201420644489.1 grades.201420644489.1 disclose a kind of through-flow ducting assembly, by being provided with the air guide structure extended along vertical direction in air channel, to adjust the direction in airflow passes air channel, it is prevented that air-flow generates in air channel and easily causes air-out shakiness, the eddy current of abnormal sound and turbulent flow.Zhuhai Gree Electric Appliances proposes the solution of some quiet blower fans.201110211073.1 with the cross flow fan of 201010522721.0 improves the position of snail tongue, improve interior flow field, reducing noise.201310101098.5 cross flow fan fin is set inside spiral case, reduce periodically air-flow excitation.200980141613.4 with 201110176647.6 axial-flow fan by change blade construction reduce noise.In existing technical literature, " the noise research of cross flow fan " (Chen Pei etc.) think that the structure changing spiral case and inlet air conditions can reduce noise." experimentation of Turbulence in Exit of Cross Flow Fan and flow noise " (Sun Liqun etc.) disclose the impact of heat exchanger stream field, and heat exchanger affects inlet flow field.Document above can as prior art reference.Noise directly affects the result of use of electrical equipment, and in contemporary life staying idle at home, the environmental requirement of low noise is more and more higher, prior art can not meet requirement.
The invention provides a kind of noise reduction draft mechanism, including impeller 200 and shell 100, described impeller 200 is positioned at this shell 100.Described shell 100 forms a low discharge air inlet 141, high flow capacity air inlet 121 and air outlet 132, and described impeller 200 is for introducing the air-flow of described low discharge air inlet 141 and high flow capacity air inlet 121 and drawing from described air outlet 132.Air inlet is divided into two parts by the present invention, and low discharge air inlet 141 introduces low-pressure air current, and flow is low, is mainly used in revising the position of vortex centers, reduces blade 210 resonance, drop low wind noise.
Design a through-flow blower unit 002 and through-flow electrical equipment on this basis such as Fig. 1 to 8 present invention, through-flow electrical equipment has draft mechanism, for instance be cross flow fan 001.This 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 100, and four groups of impellers 200 are symmetrically arranged in described shell 100.This through-flow blower unit 002 is as the part embodiment of axial-flow fan.Through-flow blower unit 002, to reduce noise, meets wiring needs for main purpose simultaneously.
At Fig. 5, in 6, described shell 100 includes interior profiled member 110, outer profiled member 120, guiding piece 130 and four distance pieces 140.The both sides of described distance piece 140 are provided with demarcation strip 146, and described shell 100 is divided into separate air inducing chamber 004 by the demarcation strip 146 of same described distance piece 140.Four distance pieces 140 form four air inducing chambeies 004, and air inducing chamber 004 works alone, and only the flow field of entrance and exit communicates.On cross section, in the described air inducing chamber 004 of least one set, described outer profiled member 120, guiding piece 130 and distance piece 140 are partitioned into a low discharge space 024, and described distance piece 140 is provided with low discharge air inlet 141；Described outer profiled member 120, distance piece 140 and interior profiled member 110 are partitioned into a high flow capacity space 014, and described impeller 200 is positioned at this high flow capacity space 014, and described outer profiled member 120 is provided with high flow capacity air inlet 121.In the present embodiment, low discharge space 024 refers to that air pressure is relatively low, the space that flow is less.
The inner edge of described outer profiled member 120 sets spaced multiple first stop part 122, and the outer rim of described guiding piece 130 is provided with the second stop part 131 of ring-type, and described second stop part 131 is fixed on described first stop part 122.Second stop part 131 is ring-type, and the first stop part 122 is spaced from each other, and second stop part 131 space between the first stop part 122 forms a gap 034, and gap 034 area can be 5 to 20mm- 2.Air-flow can rapidly enter low discharge space 024 along (gap) between the first stop part 122 spaced apart from each other.Owing to gap 034 is less, after entering low discharge space 024, flow is relatively low, forms low pressure.
The side in the close described high flow capacity space 014 of described high flow capacity air inlet 121 is provided with multiple first floor 123, and the plane at the plurality of first floor 123 place is perpendicular to the axis of described impeller 200.First floor 123 guides the flow direction of wind, hinders the appearance of periodically turbulent flow.This first floor 123 is provided with breach 124 in the side away from low discharge air inlet 141.Breach 124 place flow velocity is the fastest, and less obstruction can improve air inducing efficiency.
Being provided with air outlet 132 between described interior profiled member 110 and described guiding piece 130, described guiding piece 130 is provided with diversion division 134 on this air outlet 132.The end face of diversion division 134 is arcuate structure, hinders little.Described interior profiled member 110 substantially circular arc bool, by inlet guide 115, outlets direct portion 117 and connect the curved portions 116 in this inlet guide 115 and outlets direct portion 117 and form.Described curved portions 116 is obtuse angle, and its angle is equal to the maximum central angle of high flow capacity air inlet 111 with low discharge air inlet 141, namely equal to A+B+C.Fluid rapidly flows toward in curved portions 116 change, forms Turbulent Boundary Layer, and " the noise research of cross flow fan " is called spiral case.Described curved portions 116 intersects at a wind noise 118 with described inlet guide 115, and this wind noise 118 is change the starting point flowed to, the i.e. starting point of curved portions 116.
Described distance piece 140 is provided with snail tongue 143 and connects the connecting portion 144 of this snail tongue 143 and low discharge air inlet 141, and the extended line of this connecting portion 144 sequentially passes through the center of circle of described impeller 200 and described wind noise 128.In axial-flow fan, near snail tongue 143, air-flow is easily disorderly, increases eddy current crack.The connecting portion 144 adopting a horizontal between the snail tongue 143 of the present invention and low discharge air inlet 141 is connected, and the obstruction of snail tongue 143 front end convection cell is little, and the flow of low discharge air inlet 141 is low, reduces the thickness of Turbulent Boundary Layer.For improving the effect of connecting portion 144, the extended line of this connecting portion 144 sequentially passes through the center of circle of described impeller 200 and described wind noise.This structure can reduce noise 1 to 2dB.The lead-in wire of impeller 200 motor may be installed the rear of this snail tongue 143, is protected by connecting portion 144, it is provided that enough installing spaces, does not affect again the work in air inducing chamber 004 simultaneously.The lead-in wire of impeller 200 is arranged in the outside of described snail tongue 143, and institute's distance piece 140 is provided with constraining rod 145, and described lead-in wire 230 is positioned at this constraining rod 145.Constraining rod 145 anchor leg so that more compact structure.
The width of low discharge air inlet 141 and this air inlet are unsuitable excessive with the distance of high flow capacity air inlet 121, and the too big one side of distance requires more space, affects air inducing efficiency on the other hand.The angle of the center of circle and described low discharge air inlet 141 two end point connecting line is A, the angle of the two-end-point that this center of circle is close with described low discharge air inlet 141 and high flow capacity air inlet 121 is B(string 142), the angle of this center of circle and described high flow capacity air inlet 121 two end point connecting line is C, A=B, B+C=90 °.B the best takes 70 to 78 °.As it can be seen, the angle of the present embodiment refers to that air port projects the central angle that string is corresponding on impeller 200 cylindrical.
Described impeller 200 includes blade 210 and the first motor 220, described first motor 220 is fixed on the side away from described air inducing chamber 004 of described demarcation strip 146, described blade 210 is between two demarcation strips 146, and the output shaft of this first motor 220 is through described demarcation strip 146 and is connected to described blade 210.The side in the close described high flow capacity space 014 of described high flow capacity air inlet 121 is additionally provided with multiple second floor 129, and this second floor is arranged between adjacent described impeller 200.Second floor 129 its compartmentation main, itself and demarcation strip 146 contact with each other, and improve the sealing in air inducing chamber.
Air-flow mainly enters drainage lumens from high flow capacity air inlet.Attachment structure between outer profiled member and guiding piece is interval, and gap therein allows fraction to pass through, and air-flow enters low discharge district through this gap, finally enters drainage lumens.By arranging the low discharge air inlet remaining mutually with high pressure admission mouth, eddy current moves to blade center, and the wind reducing snail tongue is made an uproar.Low discharge air inlet and high flow capacity air inlet are spaced from each other, and low discharge opening is straight with impeller central, air-flow unobstructed flow, reducing noise.Additionally, in the present embodiment, bend in the middle part of described diversion division 134.Diversion division 134 constitutes a warp architecture so that the contact that the flow field in each air inducing chamber is more uniformly distributed.
The parameter that the present invention does not limit takes known scope, and noise can reduce 2 to 8dB, and spectrum concentration is at 100-150Hz.It is also preferred that the left wheel speed N=1300r/min.Impeller effective length h=744.31mm, impeller outer diameter D=105.7mm, diameter is than ζ=0.8114, internal blade angle β 1A=90 °, blade angles 2A=152.5 °, periphery, blade interior thickness t=1.1mm, blade tip thickness t1=0.8mm, blade tiltedly turns round angle γ=0.08 °/mm, number of blade z=30.Spiral case gap (wind noise gap)=1mm, snail tongue room 2mm, fan tongue distance air outlet 12mm.Under this preferably parameter value, noise can reduce about 7dB, and squelch is extremely favourable by this.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (6)
1. a rotary limit device, including fixation kit, horizontally rotate assembly and vertical rotary assembly, the described assembly that horizontally rotates is rotatably arranged on this fixation kit, described vertical rotary assembly horizontally rotates on assembly described in being fixed on, this vertical rotary assembly is connected to a through-flow blower unit, it is characterized in that
Described fixation kit includes driving plate, a boss it is provided with, for connecting the Access Division of circuit devcie and concentric arc-shaped rack and arc groove bottom described lower driving plate, the top of this boss is provided with slideway, the bearing of trend of this slideway is provided with the guide surface of at least one, this boss drives the opposite side of plate to form a mounting groove on described, and this mounting groove is connected to described Access Division through a through hole；
The described assembly that horizontally rotates includes the second motor, upper driving plate, gripper shoe and travel switch, and described gripper shoe is fixed on described upper driving plate, and this gripper shoe is connected to described vertical rotary assembly,
Described upper driving plate is provided with arc-shaped slot and driving hole, described driving hole is slidably provided with a drive link, described slideway is stretched in the end of this drive link, and in the guiding lower slider of this guide surface, described second motor is fixed on described upper driving plate, the output shaft described arc-shaped slot of traverse of this second motor described, the output shaft of this second motor is connected to a gear, this gear is engaged to described arc-shaped rack, described arc groove is stretched in the end of described gear, described travel switch is fixed in described upper driving plate, the outfan of the trip switch is connected to described through-flow blower unit through wire, the startup sheet of the trip switch is attached on described drive link.
2. rotary limit device according to claim 1, it is characterized in that, described fixation kit also includes a location-plate, described location-plate and lower driving plate are connected with each other, this location-plate is positioned at the outside of lower driving plate, this location-plate is provided with the connecting groove and counterweight tank that are arranged symmetrically with, and one end of this connecting groove is connected to described mounting groove, and the other end stretches out from the outer rim of described location-plate.
3. rotary limit device according to claim 1, it is characterised in that be provided with wiper between described lower driving plate and upper driving plate.
4. rotary limit device according to claim 1, it is characterised in that described fixation kit also includes a base plate, described base plate covers bottom described location-plate, and this base plate is provided with tread plate.
5. rotary limit device according to claim 1, it is characterized in that, described vertical rotary assembly includes connecting plate, rotating shaft and two legs, described leg is fixed in described gripper shoe, the both sides of described connecting plate are respectively connecting to described rotating shaft and through-flow blower unit, the two ends of described rotating shaft are rotatably inserted described leg respectively, this rotating shaft is cased with card-bit part and multiple frictional disk, this card-bit part and frictional disk are locked in the side of described leg by one screw, described card-bit part has a screens groove, this leg is provided with a screens portion along the direction that described rotating shaft extends, this screens portion stretches into described screens groove.
6. household electrical appliance, it is characterised in that include the rotary limit device described in a through-flow blower unit and claim 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610292571.6A CN105757418B (en) | 2016-05-05 | 2016-05-05 | Rotary limit device and household electrical appliance |
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| CN201610292571.6A CN105757418B (en) | 2016-05-05 | 2016-05-05 | Rotary limit device and household electrical appliance |
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| CN105757418A true CN105757418A (en) | 2016-07-13 |
| CN105757418B CN105757418B (en) | 2018-07-17 |
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| CN201610292571.6A Active CN105757418B (en) | 2016-05-05 | 2016-05-05 | Rotary limit device and household electrical appliance |
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Cited By (1)
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| CN106958539A (en) * | 2017-03-21 | 2017-07-18 | 奥克斯空调股份有限公司 | A kind of volute structure of air-conditioner |
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Also Published As
| Publication number | Publication date |
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| CN105757418B (en) | 2018-07-17 |
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