CN101886317A - Direct-driven fully automatic impeller type washing machine and washing method thereof - Google Patents
Direct-driven fully automatic impeller type washing machine and washing method thereof Download PDFInfo
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- CN101886317A CN101886317A CN2009101363374A CN200910136337A CN101886317A CN 101886317 A CN101886317 A CN 101886317A CN 2009101363374 A CN2009101363374 A CN 2009101363374A CN 200910136337 A CN200910136337 A CN 200910136337A CN 101886317 A CN101886317 A CN 101886317A
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Abstract
The invention discloses a direct-driven fully automatic impeller type washing machine and a washing method thereof. The washing is performed by directly driving an impeller through a direct-driven motor; when the washing machine is started to a washing state, the initial speed of a motor is less than a constant speed of a running process; during the constant speed running, the flow in a corresponding washing tube is circulated and turned over by adopting a circulating variable-speed circulating water-flow driving mode; and the motor first performs long-term strong water flow driving to turn over clothes, then performs short-time balanced water flow driving to automatically correct the offset of the clothes in the washing tube and circulates the processes in turn. The clothes do spiral ascending motion around blades of the impeller while revolving around the center of the impeller in the washing tube, and are turned over from the centre of the impeller to the periphery when moving to the space behind a neck part of the impeller in the centre of the impeller and then fall down to the periphery of the bottom of the tube along the wall of the washing tube; then the clothes at the bottom of the tube are turned over upwards from the periphery to the centre of the impeller; and the clothes in the upper space are turned over downwards from the centre to the periphery. Through the washing machine and the washing method, the load can be automatically balanced.
Description
Technical field
The present invention relates to a kind of full-automatic impeller type washing machine, especially a kind of direct driving motor directly drives the full-automatic impeller type washing machine and the washing methods thereof of impeller.
Background technology
Common rotary drum washing machine is by decelerator, carry out with belt that energy transmits, impeller is flat or sunk, by adding a large amount of water, lean on the upset of rotating the drive clothing back and forth of impeller during washing, will be on its upset left and right directions more than above-below direction, thereby, usually cause to be placed on top clothes and not wash clean, the clean uniformity of clothing is very poor, generally between 70%-90%.In addition, the rotation time of duty motor is all long, and generally between 1.0-1.6, it is also slow to commutate, and needs dwell time between 0.4-0.6.The speed of motor generally can not change, though the current of the program that has also are cyclical-transformations, what adopt all is for a long time normal current in every interval, adds the reinforcement current of one period short time again, successively repeatedly.The reinforcement current refer to longer than the rotation time of normal current, the current that dwell time is short.
The mode of washing of full-automatic impeller type washing machine generally is to finish by the long-time stirring back and forth of impeller, in order to reach clean effect, the rotation time of motor is generally long, and because the time that motor rotates length is had relatively high expectations to the balance of complete machine, cause common washing machine when washing, need add a large amount of water, reduce the resistance that the friction between clothing and the bucket brings.Because the time that motor rotates is longer, the electric energy when causing the washing machine washing is bigger simultaneously; And, the long mutual winding that has also caused between the clothing of the time that motor rotates.Therefore, common washing machine has the water consumption height when washing, power consumption height, the easily shortcoming of twining.
Application number is that 00121919.7 Chinese patent discloses a kind of method and apparatus that is used for laundering of textile fabrics in the automatic washing machine that includes cleaning-drum and impeller.This method comprises: fabric is encased in the washing cavities; To be enough to soak this fabric but not can impeller shaking peroid chien shih fabric break away from and impeller between the cleaning solution that is frictionally engaged join in the washing cavities; And impeller is swung, so that drag the fabric that is positioned at directly over the impeller in the swing mode, wherein this fabric in washing cavities along inverse toroidal path upset, this inverse toroidal inverted pattern be by the swing impeller be bearing in this impeller above fabric between direct contact formed.Washing machine in foregoing invention, the speed of the motor of employing are that high earlier back is low, and rotating manner is to adopt the higher initial driving curve of the longer speed of current earlier, after motor rotation gets up, adopt the lower maintenance of the shorter speed of current to drive curve.Its initial curve that drives just is used for starting the motion of clothes, moves according to keeping driving curve later on always.
The speed height that initial actuating speed drives than maintenance in the above-mentioned patent, the stroke ratio of the initial motor that drives keep the stroke of driving long.Because the stroke of the motor of this kind mode of washing is shorter, the toggle speed of motor is very high, and switching direction is very fast, causes clothing imbalance in the washtub easily, and load partially in a side of bucket, causes washtub to rock severity easily, thereby causes the complete machine vibrations.And the toggle speed of motor is higher than maintenance speed, starts stroke and also is longer than the maintenance stroke, causes complete machine in washing at first like this, the imbalance aggravation of clothing in washtub, and the vibrations of complete machine are severe more.In addition owing to this reason, clothing is in lower maintenance speed and the motion process than short stroke, the number of times of upset also can reduce, especially during heavy load, because maintenance speed and stroke are constant, cause the imbalance of clothing in washtub to be revised automatically, thereby cause the imbalance of clothing and the vibrations of complete machine more to aggravate.
In view of this special proposition the present invention.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provide a kind of speed that makes motor from slow to fast, the washing methods of cyclical-transformation current, the washing machine that makes this mode of washing is when work, can the autobalance load, the vibrations of complete machine are diminished.
Another object of the present invention is to provide a kind of direct-drive motor directly to drive impeller, during washing the speed of motor from slow to fast, the cyclical-transformation current full-automatic impeller type washing machine.
For solving the problems of the technologies described above, the present invention adopts the basic design of technical scheme to be: a kind of washing methods of direct-driven fully automatic impeller type, it is characterized in that: the mode that directly drives impeller by direct driving motor is washed, when motor begins to start when washing state, the initial velocity of motor is lower than the maintenance speed of operation process.
In the process of maintenance speed running, adopt the circulating water flow type of drive of circulation speed change, correspond to the water circulation upset in the washtub, after for a long time strong water current driven of motor running earlier rotates clothing, carry out the balance water current driven of short time again and revise the biasing of clothing in washtub automatically, successively circulation.
Concrete washing methods is, the washing beginning, the initial velocity of motor adopts low velocity 30Hz-50Hz, 2-3 is after second in running, adopts the circulating water flow type of drive to carry out the motion of washing clothes upset, and this circulating water flow drives and comprises, elder generation's employing speed height, the strong water current driven mode of washing that time is long, these strong current are to change to stop 0.1 second in 0.8 second according to the size of load, or change and stopped in 0.9 second 0.1 second; Or change and stopped in 1.0 seconds 0.1 second or any combination current of above scope, speed is 70Hz-100Hz; Carry out the low short balance water current driven of time of speed then, these balance current are to change to stop 0.1 second in 0.5 second according to the size of load, or change and stopped in 0.6 second 0.1 second, or other weak current combinations, and speed is 50Hz-70Hz.
During washing, the form of expression of water circulation upset is, clothing in washtub around the rotating forward movement that makes progress along the impeller blade in the revolution motion of impeller center, clothing moves to mind-set periphery upset from impeller behind the impeller neck at impeller center, fall to a barrel bottom perimeter along the washtub wall, the clothing at the bottom of the bucket is flipped up to the impeller center by the periphery, top clothing flips down from center to periphery again, and this process circulates.
When clothing during in washtub bottom and to the impeller central motion, clothing under the water impact effect that impeller rotate to form, frictional force, motive force and the impeller of impeller blade itself produce the centrifugal force acting in conjunction of clothing in rotating under three kinds of motion combinations of formation, move up to moving of impeller neck along the impeller blade when being respectively revolution motion and revolution motion, the formula in the shape of a spiral of combining these two kinds of motion modes rises and to the movement locus of site polymerization, the motion mode of clothing self is from flip-flop movement simultaneously.
Move in the process at impeller neck top the thrust that makes progress that the clothing that will move upward below it is subjected to gives and the percussion of current at clothing; When clothing moves to impeller neck top, it continues to move upward owing to inertia, simultaneously its be subjected to gravity effect and the pulling force that gives of the following clothing that has fallen and the torsion of self and rotate with impeller in the centrifugal force that produces, clothing is done outside upset revolution motion until arriving the position of washtub bottom away from the impeller center behind of short duration upthrow, simultaneously, clothing is done from flip-flop movement.
When the outside of clothing at washtub bottom impeller, it is stressed to be: make clothing along with the stiction from impeller of impeller motion, make its active force that comes from clothing above the impeller that moves upward, make the clothing oriented bucket end and barrel rim along move from overflowing of being stirred by impeller to active force, the prevention clothing of the current between impeller and the washtub move from the frictional force between clothing and the washtub, the gravity effect of closing of the clothing of clothing self and vertical direction thereof, the clothing movement locus is to move upward along impeller when clothing rotates with impeller.
When clothing during at bucket bottom impeller peripheral, because the circumference connecting portion with the washtub wall at the bottom of washtub is provided with at least one backwater gathering sill, when producing corresponding active force by the backwater gathering sill, current hold up clothing during washing, clothing is taken back on the impeller, moved upward along impeller when rotating with impeller.
When clothing is between two impeller blades, its stressedly be: the frictional force that the clothing that vertical height is lower gives, the centrifugal force that impeller forms in rotating process, the impeller blade is to the thrust of clothing, impeller gives the stiction of clothing in the process that starts, the active force of the current that under impeller promotes, form, torsion and resistance that the higher clothing of vertical height gives, perpendicularity is than the acting in conjunction power of its high clothing and self gravitation thereof, in this process, what impeller did not stop stops, start, the stiction of impeller do not stop to the clothing effect, make it continue to move upward.At this motion process, clothing is done simultaneously from flip-flop movement.
When clothing when the impeller blade is up creeped by export-oriented center, it is stressed to be: in uphill process with frictional force, clothing self and the vertical height of clothing on every side than it high and press thereon clothing close gravity, by below the torsion that gives of the higher clothing of the clothing thrust that makes progress, stiction, the active force of current, the vertical height of impeller in starting that give and resistance, along with impeller rotate thrust that the centrifugal force that produces and impeller blade give with joint efforts; This process, clothing is done simultaneously from flip-flop movement.
When clothing along the impeller blade when impeller neck top moves, it is stressed to be: the thrust that makes progress that impeller gives the frictional force of clothing, following clothing, self gravity and the thrust of impeller, with the centrifugal force of impeller blade rotation and making a concerted effort of water flow impact pressure.
After clothing falls, toward falling, clothing is subjected to the trend that the acting in conjunction power of centripetal force in pressure, self gravitation and the washtub rotation process of pulling force that vertical height is lower than its clothing, clothing that vertical height is higher than it makes it have trend washtub center to move along washtub bottom chamfer place.
Above-mentioned direct-driven fully automatic impeller type washing machine, comprise shell, washtub, be located at the impeller at the bottom of the washtub, motor, Inlet and outlet water device and control device, impeller comprises the impeller chassis and is located at impeller blade on the impeller chassis, it is characterized in that: described motor direct-drive impeller, the impeller blade is two-layer at least step structure, smooth excessiveness between each ladder layer, the impeller blade height is radially increased to center ladder layer by edge, impeller chassis, between the ladder layer is that level and smooth cambered surface is excessive, and each impeller blade radially converges at the impeller neck of impeller center chassis one projection.
Described impeller blade comprises the bottom base that lower floor is connected with the impeller chassis and the convex tendon on upper strata at least, described bottom base and convex tendon comprise the clothing raised floor and the left and right sidewall that is connected with clothing raised floor smooth excessiveness of edge, relative impeller chassis one side respectively, and described convex tendon also comprises the upper surface that is connected with left and right sidewall smooth excessiveness with the clothing raised floor.
Described impeller blade comprises the convex tendon on bottom base and upper strata, convex tendon clothing raised floor and bottom base clothing raised floor smooth excessiveness, the bottom base clothing raised floor gradient is 0 °～45 °, the convex tendon clothing raised floor gradient is 30 °～60 °, and the convex tendon clothing raised floor ratio of slope bottom base clothing raised floor gradient is high at least 5 °.
The outline line that described bottom base is connected with the impeller chassis is made of three partial contour curves, the width maximum of edge, impeller chassis contour curve, the width minimum of impeller center chassis place contour curve, the contour curve of outermost is the circular curve that " eight " font is drawn in to impeller center chassis direction, middle contour curve is " () " shape, and the contour curve in be to the curve that continues gathering to impeller center chassis prescription.
Described bottom base smoothly raises along the clothing raised floor, the clothing raised floor is 90 °～100 ° in circumference edge, impeller chassis and inclination angle, impeller chassis, the outermost contour curve and in the left and right sidewall and the inclination angle, impeller chassis of contour curve correspondence be 90 °～100 °, the left and right sidewall of intermediate profile curve correspondence and inclination angle, impeller chassis are 110 °～120 °.
The inclination angle on the left and right sidewall of described convex tendon and impeller chassis than the inclination angle on left and right sidewall of bottom base and impeller chassis big 30 °～40 °
Described impeller chassis raises to the center from the edge, slightly goes up the impeller neck of thin frustum cone structure once in the center projection, and inclination angle, edge, impeller chassis is 0 °～15 °, and the angle of impeller neck round platform periphery and vertical direction is 30 ° ± 5 °.
The junction is that arc is excessive between described impeller neck and the impeller chassis, and arc radius is identical with the circular curve radian that contour curve " eight " font of outermost is drawn in to impeller center chassis direction.
Above-mentioned impeller chassis and with its radius ratio of washtub of impeller chassis coupling be 0.5～0.8, optimum is 0.65～0.75.
Circumference connecting portion with the washtub wall at the bottom of the washtub is provided with at least one backwater gathering sill.
Above-mentioned backwater gathering sill bottom land is lower than the horizontal plane at the bottom of the washtub.
After adopting technique scheme, the present invention compared with prior art has following beneficial effect.
Full-automatic impeller type washing machine of the present invention, the motor of employing direct-drive type directly drives impeller and washs.Reduced the energy transmission of adopting decelerator to cause, and adopt special-purpose high top impeller, cooperate special-purpose washing procedure and current etc., make clothing in washing process, in the interior bucket of washing machine, can in the middle of impeller, overturn to both sides, clothing at the bottom of the bucket is flipped up, and top clothing can flip down, and all clothings can both be cleaned, and, the upset of clothing has driven the phase mutual friction of clothing, can better improve the wash degree of clothing.The present invention washs all clothings in back and can both be cleaned because of upset, and the clothes washing uniformity is also improved greatly, and the uniformity can reach between the 4-5.These washing procedure current etc. are different with common washing machine, and motor rotation and the time that stops are all shorter.Along with the difference of load weight, the rotation time of motor is at 0.5-1.1 between second, and dwell time is at 0.1-0.3 between second.The acceleration and the velocity ratio of motor are higher, motor can be at short notice conversion direction back and forth, and drive load and come back rotation.
The present invention utilizes the improvement of motor speed and directly drives impeller, can be on the basis of the impact forces of as far as possible utilizing water, rely on the interaction force of washings self, the active force of impeller and washings, washings is with the active force of bucket wall and the centrifugal force of impeller rotary action, maximized these power of utilizing, in washing process, the washings that promotes the washing wave wheel top rises to highest point at rotation process, at gravity, fall back to the interior bucket bottom of outermost under the frictional force effect of centrifugal force and following washings, continue then above rising to washing wave wheel under the washings effect above the washing wave wheel, to carry out the washing second time, go down so repeatedly.This structure not only makes washings can not be intertwined in washing process, and comprehensively, fully, repeatedly, wash efficiently, does not need the high water level washing simultaneously, has saved great amount of water resources; In addition, this washing process, each position of washings is all carried out stressed and motion in whole motion, and stressed frequency is higher and relatively more even.In a washing process of washings upset, each active force periodically acts on, and abrasive forces is little, and good to the removal effect of dirt, has improved the efficient of washing, has avoided washings to be intertwined it is caused distortion.
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.
Description of drawings
Fig. 1 is our bright washing machine washing clothes flip-flop movement track schematic diagram;
Fig. 2 is the impeller structure schematic diagram of this washing methods of realization of the present invention;
Fig. 3 is an impeller blade bottom profile curve synoptic diagram of the present invention;
Fig. 4 be impeller of the present invention when rotating the impeller blade drive water movement direction schematic diagram;
Fig. 5 is the elementary contour curve synoptic diagram of impeller chassis structure of the present invention and neck;
Fig. 6 is the stressed schematic diagram of washing methods washings of the present invention in impeller outside, washtub bottom;
Fig. 7 be washing methods washings of the present invention between two impeller blades when zone stressed schematic diagram;
Fig. 8 is that washing methods washings of the present invention is along impeller blade stressed schematic diagram when up move in the center;
Fig. 9 is that washing methods washings of the present invention is along impeller blade stressed schematic diagram when impeller neck top moves;
Figure 10 is washing methods washings of the present invention stressed schematic diagram when washtub bottom chamfer place down moves;
Figure 11 is a schematic diagram at the bottom of the full-automatic impeller type washing machine washtub of the present invention.
The specific embodiment
As shown in figure 10, impeller 1 of the present invention, for directly driving by motor 100, not by the decelerator speed change, during washing, the initial velocity of start-up course is lower than the maintenance speed of operation process, in the process of maintenance speed running, adopt the circulating water flow type of drive of circulation speed change, correspond to the water circulation upset in the washtub, after for a long time strong water current driven of motor running earlier rotates clothing, carry out the balance water current driven of short time again and revise the biasing of clothing in washtub automatically, successively circulation.Type of drive of the present invention can make washings stir washing up and down in water, utilize and directly drive impeller in frequent rotating process, to the combination of the effect of the impulsive force of the friction that does not stop of washings and stirring action power and water, formation can apply the special mode of washing that suitable mechanicals efforts reaches clean result to washings.
The washing beginning, the initial velocity of motor adopts low velocity 30Hz-50Hz, 2-3 is after second in running, adopt the circulating water flow type of drive to carry out the motion of washing clothes upset, this circulating water flow drives and comprises, first employing speed height, the strong water current driven mode of washing that the time is long, these strong current are to change to stop 0.1 second in 0.8 second according to the size of load, or change and stopped in 0.9 second 0.1 second; Or change and stopped in 1.0 seconds 0.1 second or any combination current of above scope, speed is 70Hz-100Hz; Carry out the low short balance water current driven of time of speed then, these balance current are to change to stop 0.1 second in 0.5 second according to the size of load, or change and stopped in 0.6 second 0.1 second, or other weak current combinations, and speed is 50Hz-70Hz.
In washing methods of the present invention, washings upset washing motion comprises forward and backward motion process: when washings during in washtub 1 bottom and to impeller 1 central motion, the washings motion mode is the rotating forward movement that makes progress along the impeller blade in the time of around the central shaft revolution motion; Washings moves up to the impeller neck 4 at impeller center along impeller blade 3 by this motion mode; When washings moves to impeller neck 4 tops, the washings motion mode is, washings moves upward along inertia, the upset revolution motion is until arriving the position of washtub 1 wall away from the impeller center outside doing under the effect of centrifugal force and bottom washings behind the of short duration upthrow, washings reaches under the acting in conjunction of the downward pulling force of the washings of its lower floor in the centripetal force that washtub rotates generation then, move to washtub 1 bottom, this process motion mode is the backpitch descending motion.Its movement locus as shown in Figure 1, the alternating action of forward and backward period of motion property on washings in, self does flip-flop movement washings.In whole motion, each position of washings is all carried out stressed and motion, and stressed little still frequency is higher and relatively more even.In washing process, periodic like this acting on, abrasive forces is little, and good to the removal effect of dirt, and above-mentioned motion is the motion mode that the size of washings load capacity and water consumption is presented when reaching best.
Particularly, above-mentioned washings upset preceding half period of motion of washing is: when washings during in washtub 1 bottom and away from impeller 1 central motion, washings rotates under the water impact effect that forms at impeller 1, the frictional force of impeller blade 3 itself, the centrifugal force acting in conjunction that produces during motive force and impeller 1 rotate washings forms three kinds of motion combinations down, move up to moving of impeller neck 4 along impeller blade 3 when being respectively revolution motion and revolution motion, the formula in the shape of a spiral of combining these two kinds of motion modes rises and to the movement locus of site polymerization, the motion mode of washings self is from flip-flop movement simultaneously.
Half period of motion of back is: move in the process at impeller neck 4 tops the thrust that makes progress that the washings that will move upward below it is subjected to gives and the percussion of current at washings; When washings moves to impeller neck 4 tops, it continues to move upward owing to inertia, simultaneously it is subjected to self gravity effect and the centrifugal force that produces in rotating of the pulling force that gives of the following washings that has fallen and torsion and impeller, washings is done outside upset revolution motion until arriving the position of washtub 1 bottom away from the impeller center behind of short duration upthrow, this process motion mode is the backpitch descending motion, simultaneously, washings is done from flip-flop movement.
Mode of washing of the present invention does not need high water level, as long as slurry can soak washings, also can realize high efficiency washing when enough water floats washings, washings is at the bottom of washtub and stressed the having nothing in common with each other in diverse location place of impeller, and its concrete analysis is as follows.
A, when impeller 1 outside of washings in washtub 1 bottom, washings is subjected to make the stiction Δ F from impeller 1 of washings along with the impeller motion
Static friction, the active force Δ F that comes from the washings on impeller 1 that washings is moved upward
Washings, make the active force Δ F from the current between impeller 1 and washtub 1 that overflow that stirred by impeller 1 of the oriented washtub of washings bottom and washtub edge movement tendency
Water, stop the washings movement tendency from the frictional force Δ F between washings and the washtub 1
Frictional force, the active force that closes gravity G of washings self and vertical washings on it.Buoyancy Δ F
FloatingMinimum to the washings motion effects herein, can ignore, as shown in Figure 6, impeller clockwise rotates, and washings institute is stressed to be:
Δ F
Close=Δ F
Frictional force+ Δ F
Static friction+ Δ F
Water+ Δ F
Washings+ G
This moment, the movement locus of washings was, moved upward along impeller 1 when washings rotates with impeller 1.
B, when washings when zone between two impeller blades 3, institute is stressed is for it:
Δ F
Close=Δ F
Frictional force+ Δ F
From+ Δ F
Push away+ Δ F
Static friction+ Δ F
Water+ Δ F
Washings+ G+ Δ F
Floating
Δ F
Frictional forceBe the frictional force that the lower washings of vertical height gives, Δ F
FromBe the centrifugal force that impeller 1 forms in rotating process, Δ F
Push awayBe the thrust of 3 pairs of washings of impeller blade, Δ F
Static frictionFor impeller 1 gives the stiction of washings, Δ F in the process that starts
WaterBe the active force of the current of formation under impeller 1 promotion, Δ F
WashingsBe torsion and the resistance that the higher washings of vertical height gives, G is a vertical height than the gravity that closes of its high washings and self.Impeller 1 stops and starting what do not stop in the washing process, gives washings from the effect that the stiction of impeller 1 does not stop, and makes it continue to move upward, stressing conditions as shown in Figure 7, this state is that impeller clockwise rotates.
C, when washings when impeller blade 3 is up moved by export-oriented center, it is stressed to be:
Δ F
Close=Δ F
Frictional force+ Δ F
Static friction+ Δ F
Water+ Δ F
Washings+ G+ Δ F
From+ Δ F
Push away+ Δ F
The impeller leaf
Δ F
Frictional forceFor in uphill process from the frictional force of washings on every side, G for himself and vertical height than it high and press thereon washings close gravity, the thrust Δ F that makes progress that leans on following washings to give in this process
Push awayWith the stiction Δ F of impeller 1 in starting
Static friction, the active force Δ F of current
Water, Δ F
WashingsBe torsion and the resistance that the higher washings of vertical height gives, Δ F
FromFor rotate the centrifugal force of generation, Δ F along with impeller
The impeller leafBe the thrust that the impeller blade gives, be subjected to the effect of these power that washings is up moved, stressing conditions as shown in Figure 8, this state is that impeller rotates counterclockwise.
D, when washings along impeller blade 3 when impeller neck 4 tops move, it is stressed to be:
Δ F
Close=Δ F
Frictional force+ G+ Δ F
Push away+ Δ F
From+ Δ F
Washings+ Δ F
Water
Frictional force Δ F herein
Frictional forceBe the frictional force that impeller 1 is given washings, because washings will break away from impeller 1, frictional force is very little, the thrust Δ F that makes progress that washings is given by following washings mainly
Washings, rotate the Δ F that produces with impeller
FromThe thrust Δ F that gives with the impeller blade
Push away, Δ F
WaterBe impact force of water flow, washings keeps this movement tendency, until breaking away from impeller 1; Washings breaks away from impeller when moving to top, because the gravity effect of self, washings is done of short duration similar projectile motion; Move to washtub wall place then below under the effect of washings and the centrifugal action that rotate to produce along with the ripple road away from the impeller center, stressing conditions as shown in Figure 9, this state is that impeller rotates counterclockwise.
E, after washings falls, it down moves along washtub 1 bottom chamfer place, washings is subjected to the pulling force Δ F that vertical height is lower than its washings
Draw, vertical height is higher than the pressure Δ F of its washings
PressWith the centripetal force Δ F in the washtub rotation process
To, washings is subjected to the Δ F that makes a concerted effort under oblique herein
CloseEffect, until washtub 1 bottom, stressing conditions as shown in figure 10, this state is that impeller rotates counterclockwise.
By the description of five processes of above-mentioned A-E, can draw a complete movement locus of washings, as shown in Figure 1.
As shown in Figure 2, the described impeller 1 of the embodiment of the invention, comprise impeller chassis 2 and be located at three impeller blades 3 on the impeller chassis 2, impeller blade 3 is two-layer step structure, smooth excessiveness between the ladder layer, the height of impeller blade 3 is radially radially increased to center ladder level by 2 edges, impeller chassis, between the ladder layer is that level and smooth cambered surface is excessive, each impeller blade 3 radially converges at the impeller neck 4 of 2 centers, impeller chassis, one projection, described impeller blade 3 comprises the convex tendon 6 on bottom base 5 and upper strata, bottom base 5 and convex tendon 6 comprise the clothing raised floor 51 of 2 edges, relative impeller chassis, one side respectively, 61 and with clothing raised floor 51, the left side that 61 smooth excessivenesses connect, right side wall 52,62, described convex tendon 6 also comprises and a clothing raised floor 61 and a left side, the upper surface 63 that right side wall 62 smooth excessivenesses connect, convex tendon clothing raised floor 61 and bottom base clothing raised floor 51 smooth excessivenesses, bottom base clothing raised floor 51 gradients are 0 °～45 °, convex tendon clothing raised floor 61 gradients are 30 °～60 °, convex tendon clothing raised floor 61 ratio of slope bottom base clothing raised floors 51 gradients are big at least 5 °, and the impeller chassis 2 between per two impeller blades 3 is provided with discharge orifice 7.
As shown in Figure 3, the outline line 8 that bottom base of the present invention is connected with impeller chassis 2 is made of three partial contour curves 81,82,83, the width maximum of impeller chassis 2 edge contour curves 81, the width minimum of impeller chassis 2 center contour curves 83, the contour curve 81 of outermost is the circular curve 9 that " eight " font is drawn in to impeller chassis 2 center directions, middle contour curve 82 is " () " shape, and the contour curve 83 in be the curve that continues gatherings to impeller chassis 2 center directions.
As shown in Figure 4, described bottom base 5 smoothly raises along clothing raised floor 51, clothing raised floor 51 is 90 °～100 ° in circumference edge, impeller chassis and impeller chassis 2 inclined angle alpha, outermost contour curve 81 and in left and right sidewall 521,523 and impeller chassis 2 angle of inclination beta, the γ of contour curve 83 correspondences be 90 °～100 °, the left and right sidewall 522 and impeller chassis 2 tiltangles of intermediate profile curve 82 correspondences are 110 °～120 °; The inclination angle on the left and right sidewall of described convex tendon and impeller chassis than the inclination angle on left and right sidewall of bottom base and impeller chassis big 30 °～40 °
As shown in Figure 5, described impeller chassis 2 raises to the center from the edge, convex to form the thick impeller neck 4 of thin frustum cone structure in the center, 2 edge, impeller chassis inclination angle η is 0 °～15 °, said structure makes that the retaining between the two impeller blades is abundant, the impeller blade stirs the water yield will be enough big, and the flow of water of formation is also bigger, and the kinetic energy of conversion enough provides the flip-flop movement of washings; The angle ε of impeller neck 4 round platform peripheries and vertical direction is 30 ° ± 5 °, the active force of the frictional force that washings is subjected in crawling process, impact force of water flow and impeller blade reaches balance, washings is not easy to be intertwined, and can carry out omnibearing flip-flop movement.Junction 10 is that arc is excessive between described impeller neck 4 and the impeller chassis 2, and arc radius is identical with circular curve 9 radians that contour curve 81 " eight " fonts of outermost are drawn in to impeller center chassis direction.
Above-mentioned impeller chassis and with its radius ratio of washtub of impeller chassis coupling be 0.5～0.8, optimum is 0.65～0.75, the washings interaction force between washings on the washing wave wheel and washing wave wheel and the washtub is the most suitable like this.
Also having an important factor is at the bottom of washtub and the circumference connecting portion of washtub wall is provided with at least one backwater gathering sill 101, holds up clothing when current produce corresponding active force by backwater gathering sill 101 during washing, and clothing is taken back on the impeller 1.
Described backwater gathering sill 101 degree of depth are lower than the horizontal plane at the bottom of the washtub, and the degree of depth of described backwater gathering sill is at 5-15mm, and width is 15-20mm, and the concave surface radian of described backwater gathering sill is between 90 °-160 °.
The washtub bottom structure can also be made into more than one backwater gathering sill and arranges in proper order among the present invention, and She Ji benefit is to make the washtub bottom margin to form corrugated relief fabric like this.And make water in washtub edge circulation, produce impulse force upwards, with the clothing band from the washtub bottom.Make in its cyclic process that comes back to the washtub middle part.
This patent washtub bottom structure strengthened washings from top to bottom stir effect, make the washings that descends from the washing wave wheel top be easy to stir on the washing wave wheel, participate in next shuttling movement.
The present invention also has another special circumstances: under a lot of washings of water yield situation seldom, active force between active force, washings and the impeller between the washings is much smaller than the active force of water at this moment, buoyancy of water is enough to washings is held up in the washtub, washings the water surface do from around to the stirring of center, do the motion of stirring around the mind-set therefrom under water.This direction of motion i.e. the mass motion direction of the current of washing methods for this reason.
Claims (9)
1. the washing methods of a direct-driven fully automatic impeller type washing machine, it is characterized in that: the mode that directly drives impeller by direct driving motor is washed, and when motor begins to start when washing state, the initial velocity of motor is lower than the maintenance speed of operation process.
2. the washing methods of a kind of direct-driven fully automatic impeller type washing machine according to claim 1, it is characterized in that: the circulating water flow type of drive that in the process of maintenance speed running, adopts the circulation speed change, correspond to the water circulation upset in the washtub, after for a long time strong water current driven of motor running earlier rotates clothing, carry out the balance water current driven of short time again and revise the biasing of clothing in washtub automatically, successively circulation.
3. the washing methods of a kind of direct-driven fully automatic impeller type washing machine according to claim 2, it is characterized in that: during washing, the form of expression of water circulation upset is, clothing in washtub around the rotating forward movement that makes progress along the impeller blade in the revolution motion of impeller center, clothing moves to mind-set periphery upset from impeller behind the impeller neck at impeller center, fall to a barrel bottom perimeter along the washtub wall, again the clothing at the bottom of the bucket is flipped up to the impeller center by the periphery, top clothing flips down from center to periphery, and this process circulates.
4. the washing methods of a kind of direct-driven fully automatic impeller type washing machine according to claim 3, it is characterized in that: when clothing during at bucket bottom impeller peripheral, because the circumference connecting portion with the washtub wall at the bottom of washtub is provided with at least one backwater gathering sill, when producing corresponding active force by the backwater gathering sill, current hold up clothing during washing, clothing is taken back on the impeller, moved upward along impeller when rotating with impeller.
5. the washing methods of a kind of direct-driven fully automatic impeller type washing machine according to claim 1, it is characterized in that: concrete washing methods is, the washing beginning, the initial velocity of motor adopts low velocity 30Hz-50Hz, 2-3 is after second in running, adopt the circulating water flow type of drive to carry out the motion of washing clothes upset, this circulating water flow drives and comprises, elder generation's employing speed height, the strong water current driven mode of washing that time is long, these strong current are to change to stop 0.1 second in 0.8 second according to the size of load, or change and stopped in 0.9 second 0.1 second; Or change and stopped in 1.0 seconds 0.1 second or any combination current of above scope, speed is 70Hz-100Hz; Carry out the low short balance water current driven of time of speed then, these balance current are to change to stop 0.1 second in 0.5 second according to the size of load, or change and stopped in 0.6 second 0.1 second, or other weak current combinations, and speed is 50Hz-70Hz.
6. direct-driven fully automatic impeller type washing machine, comprise shell, washtub, be located at the impeller at the bottom of the washtub, motor, Inlet and outlet water device and control device, impeller comprises the impeller chassis and is located at impeller blade on the impeller chassis, it is characterized in that: adopt direct driving motor directly to drive impeller, the impeller blade is two-layer at least step structure, smooth excessiveness between each ladder layer, the impeller blade height is radially increased to center ladder layer by edge, impeller chassis, between the ladder layer is that level and smooth cambered surface is excessive, and each impeller blade radially converges at the impeller neck of impeller center chassis one projection.
7. direct-driven fully automatic impeller type washing machine according to claim 6 is characterized in that: described impeller chassis raises to the center from the edge, slightly goes up the impeller neck of thin frustum cone structure once in the center projection.
8. direct-driven fully automatic impeller type washing machine according to claim 6 is characterized in that: the circumference connecting portion with the washtub wall at the bottom of the washtub is provided with at least one backwater gathering sill.
9. direct-driven fully automatic impeller type washing machine according to claim 8 is characterized in that: described backwater gathering sill bottom land is lower than the horizontal plane at the bottom of the washtub.
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Effective date of registration: 20160718 Address after: 266101 Haier Industrial Park, No. 1, Haier Road, hi tech park, Laoshan District, Shandong, China Patentee after: Qingdao Haier Washing Machine Co., Ltd. Address before: 266101 Haier Industrial Park, No. 1, Haier Road, hi tech park, Laoshan District, Shandong, China Patentee before: haier group corporation Patentee before: Qingdao Haier Washing Machine Co., Ltd. |