CN106256947A - A kind of roller washing machine clutch for clutch control method - Google Patents
A kind of roller washing machine clutch for clutch control method Download PDFInfo
- Publication number
- CN106256947A CN106256947A CN201510345844.4A CN201510345844A CN106256947A CN 106256947 A CN106256947 A CN 106256947A CN 201510345844 A CN201510345844 A CN 201510345844A CN 106256947 A CN106256947 A CN 106256947A
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- Prior art keywords
- clutch
- washing
- dehydration
- reverse
- washing machine
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Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F33/00—Control of operations performed in washing machines or washer-dryers
Abstract
The invention discloses a kind of roller washing machine clutch for clutch control method, described roller washing machine includes urceolus, inner core, driving means and the impeller being located in inner core, driving means includes the clutch that the driving motor driving inner core and impeller to rotate and control washing and dehydration condition are changed, impeller and the operating of inner core differential during washing, impeller and inner core is synchronized operates in the same direction during dehydration, in washing and dehydration condition transformation process, clutch moves, washing machine controls to drive that motor is forward and reverse in the range of setting speed rocks, reduce impact, noise, the service life of clutch can be extended simultaneously, improve the experience effect of user.
Description
Technical field
The present invention relates to washing machine field, especially a kind of roller washing machine clutch for clutch control method.
Background technology
Roller washing machine in the market, by inner cylinder rotating, drives medicated clothing to then fall into falling of low level to a high position
Making the washing realizing medicated clothing, and when the medicated clothing amount of putting into is more, medicated clothing beats effect the most less in inner core
Good, full load does not the most beat effect, in order to improve the clean ratio of case above, increases at inner core rear portion
Adding impeller, when realizing washing by the effect of decelerator, impeller operates with the differential of inner core, completes to rub washing, carries
High ratio of cleaning, water smoking impeller and the synchronized operating of inner core, it is achieved high speed dewatering.
Carrying out synchronized operating or differential operating between impeller and inner core, the full position by clutch determines, clutch
The position of device determines two states: decelerator works and inoperative, is to operate for differential when decelerator works
Be washing state, decelerator is inoperative is dewatering state for synchronized operating, in clutch position change procedure,
Due to washing, clutch and fixed gear ring in dehydration, drive the squeezing action between the rotor draw-in groove of motor, lead
Cause clutch to separate with the rotor of fixed gear ring, driving motor, during the rotor operation driving motor,
Owing to, under the External Force Actings such as vibrations, clutch separated with the rotor moment of fixed gear ring, driving motor, then clutch
Device with rotate in drive the rotor of motor, static fixed gear ring generation instantaneous touch, engage, produce impact and
Noise；Even if clutch can be smoothly detached, when clutch and fixed gear ring with the rotor or fixed gear ring that drive motor
Or drive motor rotor cannot at a fully engaged time, drive motor rotor operating moment, also result in mesh impact
And noise, due to particularity and the limit value of cost of reducer drum structure, about impact, noise the most still
Solution in terms of non-structure.
In view of this special proposition 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, it is provided that a kind of roller washing machine clutch
Control method, reduces impact when washing is changed with dehydration condition and noise, improves washing machine service life and user
Experience effect.
For solving above-mentioned technical problem, the present invention uses the basic conception of technical scheme to be: a kind of roller washing machine from
Combination control method, described roller washing machine includes urceolus, inner core, driving means and the impeller being located in inner core, drives
Dynamic device includes the clutch that the driving motor driving inner core and impeller to rotate and control washing and dehydration condition are changed,
Impeller and the operating of inner core differential during washing, impeller and inner core is synchronized operates in the same direction during dehydration, it is characterised in that: washing
Washing with in dehydration condition transformation process, clutch moves, washing machine control drive motor in the range of setting speed just
Reversely rock.
Washing operating mode is when dehydration condition is changed:
Control to drive that motor is forward and reverse rocks, forward and reverse rock generation vibrations by drive motor and make clutch wash
The engaging tooth of end loosens with the engagement of corresponding engaging piece, makes clutch be smoothly detached；
Clutch moves to dehydration end, drives forward and reverse the rocking of motor to make the engaging tooth of clutch dehydration end with corresponding
Engaging piece alignment so that engagement.
Dehydration condition is when washing change working:
Control to drive that motor is forward and reverse rocks, make the engagement of clutch dehydration end by forward and reverse the rocking driving motor
Tooth loosens with the engagement of corresponding engaging piece, makes clutch be smoothly detached；
Clutch moves to washing end, drives forward and reverse the rocking of motor to make the engaging tooth of clutch washing end with corresponding
Engaging piece alignment so that engagement.
Described forward and reverse rocking accelerates to rotate into forward and reverse change.
Described setting speed scope is 0-10 rev/min.
Described forward and reverse angle rocked is more than the minimum angles between adjacent two engaging tooths on described clutch, excellent
Forward and reverse angular range rocked is selected to be ± 30 °.
Described forward and reverse rocking the forward and reverse acceleration being gradually increased for acceleration and rotate, the most described acceleration is
0-100 rev/min2, the most described acceleration is 5-20 rev/min2。
While washing and dehydration condition start conversion or from starting conversion, delay the setting time, control to drive motor
Start double swerve.
Described delay the time of setting as the 0.5-1.5 second.
Under washing operating mode, clutch position is washing end, and under dehydration condition, clutch position is dehydration end,
When washing operating mode and dehydration condition conversion, clutch is slowly moved to being dehydrated end/washing end by washing end/dehydration end,
The most described translational speed is 2-5 mm/second, and further preferred described clutch is slowly moved by washing end/dehydration end
Moving to being dehydrated the time used by end/washing end is the 3-8 second, preferably 5 seconds.
After using technique scheme, the present invention compared with prior art has the advantages that described driving electricity
Forward and reverse the rocking of machine can produce vibrations, make the engaging tooth of clutch that mutually extrudes and washing end or dehydration end it
Between become loosen, make to be more readily pulled between the engaging tooth of clutch and washing end or dehydration end, or described driving
The forward and reverse of motor rocks the displacement that can produce rotation direction, makes the engaging tooth of clutch and the washing mutually extruded
Become between end or dehydration end loosens, and makes to be more readily pulled between the engaging tooth of clutch and washing end or dehydration end,
Avoid the engaging tooth of clutch cannot depart from, with the engaging piece of washing end or dehydration end, the state handoff failure caused, with
Shi Suoshu drives forward and reverse the rocking of motor can produce vibrations or the displacement of rotation direction, makes clutch move to right
After should washing end or dehydration end, the engaging tooth of clutch is directed at the engaging piece of washing end or dehydration end and enters and engages,
Avoid the engaging tooth of clutch the most corresponding with the engaging piece position of washing end or dehydration end cause cannot engage, cause
State handoff failure.Impact, noise can be reduced, the service life of clutch can be extended simultaneously, improve and use
The experience effect at family.
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is roller washing machine structural representation of the present invention
Detailed description of the invention
Roller washing machine, is then fallen into beating of low level to a high position realized medicated clothing by inner cylinder rotating, drive medicated clothing
Washing, and when the medicated clothing amount of putting into is more, medicated clothing in inner core to beat effect the most not so good, full load
The most do not beat effect, in order to improve the clean ratio of case above, increase impeller at inner core rear portion, pass through
The effect of decelerator realizes impeller and the differential operating of inner core during washing, completes to rub washing, improves and clean ratio.De-
Water stage impeller and the synchronized operating of inner core, it is achieved high speed dewatering.
A kind of roller washing machine of the present invention includes urceolus 1, inner core 2, driving means and the impeller being located in inner core
3, driving means includes what the driving motor driving inner core 2 and impeller 3 to rotate and control washing and dehydration condition were changed
Clutch 7, described roller washing machine clutch for clutch control method: impeller 3 and the operating of inner core 2 differential during washing, during dehydration
Impeller 3 and inner core 2 is synchronized operates in the same direction, carries out synchronized operating or differential operating between impeller 3 and inner core 2,
The full position by clutch 7 determines, the position of clutch 7 determines two states: decelerator 4 works and not
Working, decelerator 4 is that to be washing state, decelerator 4 for differential operating inoperative for synchronized when working
Operating is dewatering state, during clutch 7 change in location, due to washing, in dehydration clutch 7 with
Squeezing action between washing end, dehydration end, causes clutch cannot separate with washing end, dehydration end, washs operating mode
Lower clutch position is washing end (such as fixed gear ring), and under dehydration condition, clutch position is dehydration end
(as driven the rotor draw-in groove of motor), during the rotor operation driving motor, due to outer masterpieces such as vibrations
Under with, clutch separated with the rotor moment of fixed gear ring, driving motor, then clutch and the driving in rotation
The rotor of motor, static fixed gear ring generation instantaneous touch, engagement, produce impact and noise.
Even if clutch can be smoothly detached with driving the rotor of motor or fixed gear ring, when clutch and fixed gear ring or
Drive motor rotor cannot at a fully engaged time, drive motor rotor operating moment, also result in mesh impact and
Noise.
In washing and dehydration condition transformation process, clutch moves, and washing machine controls to drive motor in setting speed
In the range of forward and reverse rock.Forward and reverse the rocking of described driving motor can produce vibrations, makes the clutch mutually extruded
Become between the engaging tooth of device and washing end or dehydration end loosens, and makes engaging tooth and washing end or the dehydration end of clutch
Between be more readily pulled from, or the forward and reverse of described driving motor rocks the displacement that can produce rotation direction, makes phase
Become between engaging tooth and washing end or the dehydration end of the clutch of extruding mutually loosens, and makes the engaging tooth of clutch and washes
Wash end or dehydration end between be more readily pulled from, it is to avoid the engaging tooth of clutch with washing end or dehydration end engaging piece without
Method departs from the state handoff failure caused, and forward and reverse the rocking of the most described driving motor can produce vibrations or rotate
The displacement in direction, makes clutch move to engaging tooth and the washing end of clutch after correspondence washs end or dehydration end or take off
The engaging piece of water end (W.E.) is directed at and enters engagement, it is to avoid the engaging tooth of clutch and washing end or the site of engagement of dehydration end
Put the most corresponding cause cannot engage, the state handoff failure caused.
Washing operating mode is when dehydration condition is changed: control to drive that motor is forward and reverse rocks, by driving the positive and negative of motor
Loosen to rocking the engagement producing engaging tooth and corresponding engaging piece that vibrations make clutch wash end, make clutch smooth
Separate；Clutch moves to dehydration end, drives forward and reverse the rocking of motor to make the engaging tooth of clutch dehydration end with right
The engaging piece alignment answered and then engagement.Can preferably reduce impact, noise, making of clutch can be extended simultaneously
With the life-span, improve the experience effect of user.
Dehydration condition is when washing change working: control to drive that motor is forward and reverse rocks, by driving the positive and negative of motor
Loosen with the engagement of corresponding engaging piece to rocking the engaging tooth making clutch dehydration end, make clutch be smoothly detached；From
Clutch moves to washing end, drives forward and reverse the rocking of motor to make the engaging tooth of clutch washing end and corresponding engagement
Portion's alignment and then engagement.Can preferably reduce impact, noise, the service life of clutch can be extended simultaneously,
Improve the experience effect of user.
Described forward and reverse rocking accelerates to rotate into forward and reverse change.Described change is accelerated rotation and can be produced during rocking
Bigger vibrations, the engaging tooth being more beneficial for clutch washing end loosens with the engagement of corresponding engaging piece, makes clutch
It is smoothly detached.
Described setting speed scope is 0-10 rev/min.This rotating speed can make clutch with drive motor soft contact,
And make clutch engaging tooth and drive motor engaging piece (such as rotor draw-in groove) soft engaging, at a fully engaged after,
The rotor driving motor operates according still further to normal dehydrating speed, solves collision impact, noise problem.
Described forward and reverse angle rocked, more than the minimum angles between adjacent two engaging tooths on described clutch, is protected
The engaging tooth of card clutch and washing end and the dehydration corresponding engaging piece of end, many wide-angles that no matter staggers can be by just
Reversely rock the engaging tooth making clutch and washing end and dehydration end corresponding engaging piece alignment, and then engagement.The most just
The angular range reversely rocked is ± 30 °.
Described forward and reverse rocking the forward and reverse acceleration being gradually increased for acceleration and rotate, the most described acceleration is
0-100 rev/min2, the most described acceleration is 5-20 rev/min2.Ensure that enough vibrations under this acceleration,
Make the engaging tooth of clutch washing end and dehydration end loosen with the engagement of corresponding engaging piece, make clutch be smoothly detached.
Ensureing during clutch moves, the speed driving motor will not be excessive, it is ensured that it is another that clutch moves simultaneously
The engagement that the engaging tooth of one end is soft with corresponding engaging piece.
While washing and dehydration condition start conversion or from starting conversion, delay the setting time, control to drive motor
Start double swerve.By driving forward and reverse the rocking of motor to make the engaging tooth of clutch washing end or dehydration end with right
The engagement answering engaging piece loosens, and makes clutch be smoothly detached；Described delay the time of setting as the 0.5-1.5 second.Preferably
Start conversion in washing and dehydration condition to delay 1 second, control to drive motor to start double swerve.
When washing operating mode and dehydration condition conversion, clutch is slowly moved to being dehydrated end/washing by washing end/dehydration end
End, the most described translational speed is 2-5 mm/second, and further preferred described clutch is delayed by washing end/dehydration end
Slow movement to being dehydrated the time used by end/washing end is the 3-8 second.Clutch and washing end and dehydration soft the connecing of end can be made
Touch and make the engaging tooth of clutch with washing end and dehydration soft the engaging of end, at a fully engaged after, drive motor
Rotor operate according still further to normal dehydrating speed, solve collision impact, noise problem.
Embodiment one
As it is shown in figure 1, described clutch 7 is installed on the main shaft 9 of urceolus 1 rear portion decelerator 4, when clutch 7
Position switching time, need to have been come by the jointly effect such as clutch motor 14, extension spring 12, shift fork 11, back-moving spring 6
Become.Described clutch motor 14 is motor, drives cam 13 above to realize two positions (i.e. clutch 7
Engage with fixed gear ring 5, clutch 7 with drive motor rotor draw-in groove 10 engage) between switching.Described draw
Spring 12 one end is connected to the cam 13 on clutch motor 14, and the other end is connected with shift fork 11, the initial shape of extension spring 12
State is in relaxed state, and after clutch motor 14 half revolution, extension spring 12 is in tension, pulls shift fork 11 to push away
Dynamic clutch 7, compresses back-moving spring 6, makes clutch 7 engage with fixed gear ring 5, completes dehydration mode to washing
The switching of pattern.When, after clutch motor 14 half revolution again, extension spring 12 is become relaxed state from tension,
Shift fork 11 no longer compresses clutch 7, and clutch 7 separates with fixed gear ring 5, so under the effect of back-moving spring 6
Engage with the rotor draw-in groove 10 driving motor afterwards, complete the washing mode switching to dehydration mode.
In washing process, clutch 7 engages with fixed gear ring 5, and decelerator 4 works, it is achieved impeller 3 is with interior
The differential operating of cylinder 2, carries out rubbing washing, improves and cleans ratio.After washing terminates, need to be switched to dehydration mode,
This is to need clutch motor 14 to pull clutch 7 to depart from fixed gear ring 5, in order to clutch 7 and driving motor
Rotor draw-in groove 10 engages, it is achieved the synchronized operating of impeller 3 and inner core 2, meet high speed dewatering requirement.Due to washing
Tooth between engaging tooth and the fixed gear ring 5 of stage clutch 7 is squeezed power, it is possible that clutch during switching
Motor 14 operating puts in place, but the phenomenon that clutch 7 cannot be separated by back-moving spring and clutch motor with fixed gear ring 5,
At this moment while clutch motor 14 pulls clutch 7 to separate with fixed gear ring 5 or delay some times (such as 1
Second), control to drive about rotor 8 beginning of motor and slowly rock, by driving the operating of the rotor 8 of motor to shake
Move and make engaging of clutch 7 and fixed gear ring 5 loosen, in order to back-moving spring 6 and clutch motor 14 can drive from
Clutch 7 is smoothly detached with fixed gear ring 5 and slowly pulling along with clutch motor 14, makes clutch and drives electricity
Contact that the rotor 8 of machine is soft, drive the left and right of motor slowly to rock to make clutch 7 engaging tooth and drive motor
Rotor draw-in groove 10 is directed at and soft engagement, at a fully engaged after, rotor 8 operates according still further to normal dehydrating speed, this
Sample just solves twice collision impact, noise problem.Wherein clutch motor 14 runs a stroke needs 5 seconds.From
The speed of service closing motor can play the effect that clutch 7 sliding speed is too fast that limits, the rotor 8 of driving motor
The angle that the speed of double swerve is 0-10 rev/min, turn over is ± 30 °, starting loop is 5-20 rev/min2,
So can preferably reduce impact, noise.
In dehydration, clutch 7 engages with the rotor draw-in groove 10 driving motor, and decelerator 4 is inoperative, ripple
Wheel 3 and the synchronized operating of inner core 2, meet the requirement of high speed dewatering.After dehydration terminates, washing mode need to be switched to,
Owing to engaging tooth and the rotor draw-in groove 10 driving motor of water smoking clutch 7 are squeezed the effect of power, shift fork
The effect of 11 is not enough to separate clutch 7 with the rotor draw-in groove 10 driving motor, at this moment pulls at clutch motor
Clutch and drive motor rotor exact separation while or delay some times (such as 1 second), control to drive
The rotor of motor starts left and right and slowly rocks, by driving operating vibrations and the position of rotation direction of the rotor 8 of motor
In-migration make clutch 7 with drive motor rotor draw-in groove 10 engage loosen, in order to clutch motor 14 can drive from
Clutch and drive being smoothly detached of rotor draw-in groove 10 of motor slowly pulling along with clutch motor 14, make from
Contact soft with fixed gear ring 5 of clutch 7, drives the double swerve of motor to make clutch 7 engaging tooth and fixing tooth
Enclose 5 soft alignments and engage, solving the most again primary collision impact, noise problem.Wherein clutch motor
Run a stroke and need 5 seconds.The speed of service of clutch motor can play and limit clutch slip excessive velocities
Effect, the speed of rotor double swerve driving motor is 0-10 rev/min, the angle that turns over is ± 30 °, starts
Acceleration is 5-20 rev/min2, so can preferably reduce impact, noise.
Embodiment in above-described embodiment can be further combined or replace, and embodiment is only to the present invention
Preferred embodiment be described, not the spirit and scope of the present invention are defined, are setting without departing from the present invention
On the premise of meter thought, various changes that in this area, technical scheme is made by professional and technical personnel and changing
Enter, belong to protection scope of the present invention.
Claims (10)
1. a roller washing machine clutch for clutch control method, described roller washing machine includes urceolus, inner core, driving means
With the impeller being located in inner core, driving means include the driving motor driving inner core and impeller to rotate and control washing and
The clutch of dehydration condition conversion, impeller and the operating of inner core differential during washing, during dehydration, impeller and inner core are synchronized in the same direction
Operating, it is characterised in that: in washing and dehydration condition transformation process, clutch moves, and washing machine controls to drive
Motor is forward and reverse in the range of setting speed to be rocked.
A kind of roller washing machine clutch for clutch control method the most according to claim 1, it is characterised in that: washers
Condition is when dehydration condition is changed:
Control to drive that motor is forward and reverse rocks, forward and reverse rock generation vibrations by drive motor and make clutch wash
The engaging tooth of end loosens with the engagement of corresponding engaging piece, makes clutch be smoothly detached；
Clutch moves to dehydration end, drives forward and reverse the rocking of motor to make the engaging tooth of clutch dehydration end with corresponding
Engaging piece alignment so that engagement.
A kind of roller washing machine clutch for clutch control method the most according to claim 1 and 2, it is characterised in that: de-
Water condition is when washing change working:
Control to drive that motor is forward and reverse rocks, make the engagement of clutch dehydration end by forward and reverse the rocking driving motor
Tooth loosens with the engagement of corresponding engaging piece, makes clutch be smoothly detached；
Clutch moves to washing end, drives forward and reverse the rocking of motor to make the engaging tooth of clutch washing end with corresponding
Engaging piece alignment so that engagement.
4. according to the arbitrary a kind of described roller washing machine clutch for clutch control method of claim 1-3, it is characterised in that:
Described forward and reverse rocking accelerates to rotate into forward and reverse change.
5. according to the arbitrary a kind of described roller washing machine clutch for clutch control method of claim 1-4, it is characterised in that:
Described setting speed scope is 0-10 rev/min.
6. according to the arbitrary a kind of described roller washing machine clutch for clutch control method of claim 1-5, it is characterised in that:
Described forward and reverse angle rocked is more than the minimum angles between adjacent two engaging tooths on described clutch, the most just
The angular range reversely rocked is ± 30 °.
7. according to the arbitrary a kind of described roller washing machine clutch for clutch control method of claim 1-6, it is characterised in that:
Described forward and reverse rocking the forward and reverse acceleration being gradually increased for acceleration and rotate, the most described acceleration is 0-100
Rev/min2, the most described acceleration is 5-20 rev/min2。
8. according to the arbitrary a kind of described roller washing machine clutch for clutch control method of claim 1-7, it is characterised in that:
While washing and dehydration condition start conversion or from starting conversion, delay the setting time, control to drive motor to start
Double swerve.
A kind of roller washing machine clutch for clutch control method the most according to claim 8, it is characterised in that prolong described in:
Rear set the time as the 0.5-1.5 second.
10. according to the arbitrary a kind of described roller washing machine clutch for clutch control method of claim 1-9, it is characterised in that:
When washing operating mode and dehydration condition conversion, clutch is slowly moved to being dehydrated end/washing end by washing end/dehydration end,
The most described translational speed is 2-5 mm/second, and further preferred described clutch is slowly moved by washing end/dehydration end
Moving to being dehydrated the time used by end/washing end is the 3-8 second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510345844.4A CN106256947A (en) | 2015-06-19 | 2015-06-19 | A kind of roller washing machine clutch for clutch control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510345844.4A CN106256947A (en) | 2015-06-19 | 2015-06-19 | A kind of roller washing machine clutch for clutch control method |
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| Publication Number | Publication Date |
|---|---|
| CN106256947A true CN106256947A (en) | 2016-12-28 |
Family
ID=57714198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510345844.4A Pending CN106256947A (en) | 2015-06-19 | 2015-06-19 | A kind of roller washing machine clutch for clutch control method |
Country Status (1)
| Country | Link |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489003A (en) * | 2017-09-15 | 2017-12-19 | 河南理工大学 | Tumble-drier active balancing device |
| CN108597919A (en) * | 2018-05-11 | 2018-09-28 | 江苏雷利电机股份有限公司 | Selection control |
| CN110409128A (en) * | 2018-04-28 | 2019-11-05 | 青岛海尔滚筒洗衣机有限公司 | A kind of roller washing machine |
| CN110552144A (en) * | 2018-05-31 | 2019-12-10 | 青岛海尔洗衣机有限公司 | impeller splicing structure, impeller and drum washing machine |
| CN110552145A (en) * | 2018-05-31 | 2019-12-10 | 青岛海尔洗衣机有限公司 | Impeller for drum washing machine and drum washing machine |
| CN110965265A (en) * | 2019-11-15 | 2020-04-07 | 海信（山东）冰箱有限公司 | Drum washing machine |
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| CN107489003A (en) * | 2017-09-15 | 2017-12-19 | 河南理工大学 | Tumble-drier active balancing device |
| CN107489003B (en) * | 2017-09-15 | 2020-02-04 | 河南理工大学 | Active balancing device of drum type dry cleaning machine |
| CN110409128A (en) * | 2018-04-28 | 2019-11-05 | 青岛海尔滚筒洗衣机有限公司 | A kind of roller washing machine |
| CN108597919A (en) * | 2018-05-11 | 2018-09-28 | 江苏雷利电机股份有限公司 | Selection control |
| CN110552144A (en) * | 2018-05-31 | 2019-12-10 | 青岛海尔洗衣机有限公司 | impeller splicing structure, impeller and drum washing machine |
| CN110552145A (en) * | 2018-05-31 | 2019-12-10 | 青岛海尔洗衣机有限公司 | Impeller for drum washing machine and drum washing machine |
| CN110552144B (en) * | 2018-05-31 | 2023-01-13 | 青岛海尔洗衣机有限公司 | Impeller splicing structure, impeller and drum washing machine |
| CN110965265A (en) * | 2019-11-15 | 2020-04-07 | 海信（山东）冰箱有限公司 | Drum washing machine |
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Application publication date: 20161228 |