CN112746459A - Washing machine and control method thereof - Google Patents
Washing machine and control method thereof Download PDFInfo
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- CN112746459A CN112746459A CN201910982287.5A CN201910982287A CN112746459A CN 112746459 A CN112746459 A CN 112746459A CN 201910982287 A CN201910982287 A CN 201910982287A CN 112746459 A CN112746459 A CN 112746459A
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- 238000005406 washing Methods 0.000 title claims abstract description 146
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 230000018044 dehydration Effects 0.000 claims description 6
- 238000006297 dehydration reaction Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 claims description 3
- 230000009467 reduction Effects 0.000 abstract description 11
- 238000009434 installation Methods 0.000 abstract description 6
- 230000009347 mechanical transmission Effects 0.000 abstract description 3
- 230000002457 bidirectional effect Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/30—Driving arrangements
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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
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/30—Driving arrangements
- D06F37/40—Driving arrangements for driving the receptacle and an agitator or impeller, e.g. alternatively
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
The present invention provides a washing machine and a control method thereof, the washing machine includes: an inner barrel; the wave wheel is arranged in the inner barrel; the first direct-drive motor is connected with the impeller to drive the impeller to rotate; the second direct-drive motor is connected with the inner barrel to drive the inner barrel to rotate; the first direct-drive motor and the second direct-drive motor are at least partially overlapped in the direction along the central axis of the inner barrel. The washing machine of the invention removes a speed reduction clutch structure, and simultaneously, the first direct drive motor and the second direct drive motor are at least partially overlapped along the central axis direction of the inner barrel, thereby greatly reducing the overall height of the driving device, enabling the washing barrel mechanism of the whole machine to be designed deeper on the premise of the same height and size of the box body, enabling the whole machine to expand larger capacity, reducing the design and installation of mechanical transmission and parts, and having high washing and rinsing efficiency and high reliability. The washing machine can be provided with a plurality of personalized programs, and the use experience of a user of the washing machine is improved.
Description
Technical Field
The invention relates to the technical field of laundry equipment, in particular to a washing machine and a control method thereof.
Background
The washing machine, as a household appliance, is gradually becoming an indispensable part of people's life, and the full-automatic pulsator washing machine, as a main type of washing machine, has an increasingly wide application range. The prior full-automatic impeller washing machine generally has the working mode that during washing and rinsing, a driving device drives an impeller of the washing machine to rotate forward and backward through a speed reduction clutch device, and during dehydration, the driving device drives the impeller of the washing machine and a washing barrel to synchronously rotate at high speed through the speed reduction clutch device.
However, with the rapid development of science and technology, the existing full-automatic pulsator washing machine has a more limited improvement of the washing effect of the clothes by simply using a washing mode of pulsator stirring water flow, and therefore, how to increase the washing diversity of the full-automatic pulsator washing machine becomes a technical problem which needs to be solved urgently to improve the washing effect.
Several patents have been proposed to solve this problem, such as the following: 02804912.8 entitled Transmission mechanism for generating bidirectional rotation, washing machine and method for generating bidirectional washing, and related inner tub and agitator, which discloses a transmission mechanism suitable for use in a washing machine for generating bidirectional drive, comprising a power input and two power outputs, one of which is connected to an agitator shaft (10) and rotates the agitator shaft in a first direction; and the other power output end thereof is connected with an inner barrel shaft (11) and rotates the inner barrel shaft in a second direction opposite to the first direction. A washing machine for generating bi-directional washing and a washing method capable of generating bi-directional washing in the washing machine. A pulsator and an inner tub for a washing machine. The patent discloses a transmission mechanism capable of driving a washing machine bidirectionally, and simultaneously discloses a specific structure of the transmission mechanism in the specification, and the content of the specification and the attached drawings shows that the patent solves the problem of single power driving mode of the existing full-automatic pulsator washing machine during washing to a certain extent, but the disclosed transmission mechanism has the problems of complex structure, high manufacturing and assembling difficulty, high manufacturing cost and the like.
For another example, application No.: 201310408108.X, with the name: the invention discloses a full-automatic washing machine, which comprises an outer barrel, an inner barrel, a wave wheel and a driving device, wherein the driving device comprises at least two rotors and at least one stator, one of the rotors is connected with the inner barrel shaft, and the other rotor is connected with the wave wheel shaft; the driving device is a variable frequency direct drive motor, the rotor, the stator, the inner barrel shaft and the impeller shaft are coaxially arranged, the inner barrel shaft is hollow, and the impeller shaft is arranged in the inner barrel shaft; when the washing machine washes, the wave wheel and the inner barrel rotate in the same direction, or rotate in opposite directions, or one of the wave wheel and the inner barrel rotates, and when the washing machine dehydrates, the wave wheel and the inner barrel rotate in the same direction and at the same speed. The washing machine is connected with the inner barrel shaft and the impeller shaft through the two rotors respectively, and the inner barrel and the impeller are driven to rotate through the double rotors respectively, so that the structure reduces the weight, the volume and the cost of a driving system to a great extent, and improves the transmission efficiency and the stability.
From the two published patent applications mentioned above, there are two main concepts to solve the water flow diversity of washing machines: the method comprises the following steps that firstly, a speed reduction clutch device capable of outputting bidirectional power is designed to realize bidirectional washing in the washing process of the washing machine, and the water flow effect is enhanced; and the second mode is to design a driving motor with bidirectional power output, and respectively drive the impeller and the inner barrel to realize bidirectional washing in the washing process of the washing machine, so that the water flow effect is enhanced. The first mode has the defects of complex structure, difficult installation and complex control method of the speed reduction clutch device, and the second mode has the defect of high cost of the driving motor with bidirectional power output.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention provides a washing machine, which adopts the following technical scheme:
a washing machine comprising:
an inner barrel;
the wave wheel is arranged in the inner barrel;
the first direct-drive motor is connected with the impeller to drive the impeller to rotate;
the second direct-drive motor is connected with the inner barrel to drive the inner barrel to rotate;
the first direct-drive motor and the second direct-drive motor are at least partially overlapped in the direction along the central axis of the inner barrel.
The device comprises a wave wheel shaft and an inner barrel shaft sleeved outside the wave wheel shaft, wherein one end of the wave wheel shaft is fixedly connected with a wave wheel, the other end of the wave wheel shaft is connected with a first direct-drive motor, one end of the inner barrel shaft is fixedly connected with an inner barrel, and the other end of the inner barrel shaft is connected with a second direct-drive motor;
the first direct drive motor/the second direct drive motor is provided with an accommodating cavity, and at least part of the second direct drive motor/the first direct drive motor is positioned in the accommodating cavity.
Furthermore, the first direct-drive motor comprises a first rotor and a first stator positioned in the first rotor, and the impeller shaft is fixedly connected with the first rotor;
the first stator is hollow inside to form the accommodating cavity, and at least part of the second direct drive motor is positioned in the accommodating cavity;
preferably, the second direct drive motor is integrally located in the accommodating cavity.
Further, the second direct drive motor comprises a second rotor and a second stator positioned in the second rotor, the second rotor is provided with a second rotor end cover fixedly connected with the inner barrel shaft, a through channel communicated with the inner barrel shaft is formed in the center of the second rotor end cover, and the impeller shaft penetrates through the through channel and the inner barrel shaft to be fixedly connected with the impeller.
Further, the second direct drive motor comprises a second rotor and a second stator positioned in the second rotor, and the inner barrel shaft is fixedly connected with the second rotor;
the second rotor is provided with a second rotor end cover fixedly connected with the inner barrel shaft, the middle part of the second rotor end cover is sunken towards the barrel bottom direction of the inner barrel to form the accommodating cavity, and at least part of the first direct-drive motor is positioned in the accommodating cavity;
preferably, the first direct drive motor is entirely located in the accommodating cavity.
The outer barrel is arranged outside the inner barrel, and a first fixing frame used for fixedly connecting a first stator and a second fixing frame used for fixedly connecting a second stator are arranged at the bottom of the outer barrel;
or the bottom of the outer barrel is provided with a shared fixed support for fixedly connecting the first stator and the second stator.
The outer barrel is arranged outside the inner barrel, a fixing device is arranged at the bottom of the outer barrel, and a positioning device which can slide along the axial direction of the inner barrel and is matched with/separated from the fixing device is arranged on the inner barrel shaft;
preferably, the fixing device comprises a fixing sleeve fixedly mounted on the bottom of the outer barrel and sleeved outside the inner barrel shaft, and the end part of the fixing sleeve is provided with a fixing sleeve meshing tooth;
the positioning device comprises a sliding sleeve which is sleeved on the inner cylinder shaft and can slide along the axial direction of the inner cylinder shaft and a driving mechanism which drives the sliding sleeve to slide along the axial direction of the inner cylinder shaft, wherein one end part of the sliding sleeve is provided with a sliding sleeve meshing tooth which can be fixedly meshed with the fixed sleeve meshing tooth.
Further, the output torque of the first direct drive motor is larger than or equal to the output torque of the second direct drive motor;
preferably, the output torque of the first direct drive motor is larger than that of the second direct drive motor.
The second invention of the present invention is to provide the control method of the above washing machine, specifically, the following technical solutions are adopted:
a control method of a washing machine, in the washing process, the washing machine controls a first direct drive motor to work alone to drive an impeller to operate, and/or controls the first direct drive motor and a second direct drive motor to work cooperatively to drive the impeller and an inner barrel to operate respectively;
in the dehydration process, the washing machine controls the first direct drive motor and the second direct drive motor to work simultaneously and respectively drives the impeller and the inner barrel to rotate at the same speed and the same direction, or the washing machine controls the second direct drive motor to work alone and drives the inner barrel to drive the impeller to rotate at the same speed and the same direction.
Further, the washing machine has:
single power washing mode: in the washing process, the washing machine control positioning device is fixedly connected with the fixing device, and controls the first direct-drive motor to work independently to drive the impeller to rotate;
and/or, a hand wash mode: in the washing process, the washing machine controls the positioning device to be separated from the fixing device, controls the first direct-drive motor to work independently, drives the impeller to run, switches off the second direct-drive motor, and enables the inner barrel to be in a free rotation state;
and/or, dual power wash mode: in the washing process, the washing machine controls the positioning device to be separated from the fixing device, controls the first direct-drive motor and the second direct-drive motor to rotate reversely, and drives the impeller and the inner barrel to rotate reversely;
and/or, a gentle wash mode: in the washing process, the washing machine controls the positioning device to be separated from the fixing device, controls the first direct-drive motor and the second direct-drive motor to rotate in the same direction, and drives the impeller and the inner barrel to rotate in the same direction.
The invention provides a washing machine with double direct-drive motors, wherein a first direct-drive motor drives a wave wheel to rotate, a second direct-drive motor drives an inner barrel to rotate, various working modes such as single rotation of the wave wheel, single inner barrel rotation, reverse rotation of the wave wheel and the inner barrel, same-direction rotation of the wave wheel and the inner barrel and the like can be realized by controlling the first direct-drive motor and the second direct-drive motor, and the working mode matched with the first direct-drive motor can be selected according to washing requirements, so that the clothes washing effect is improved, and the washed clothes can be pertinently nursed.
In addition, the washing machine realizes a multi-power and multi-combination washing mode of the washing machine through the two direct drive motors, a speed reduction clutch device is cancelled, the whole structure is simplified, and the assembly is simple and convenient; the technology of the direct drive motor is relatively mature, certain cost can be kept, and stability and reliability are high.
The washing machine of the invention removes a speed reduction clutch structure, greatly reduces the overall height of the driving device, and can ensure that the washing barrel mechanism of the whole machine is designed deeper and the whole machine can expand larger capacity on the premise of the same height and size of the box body. In order to further reduce the height of the driving device and further expand the capacity, the first direct-drive motor and the second direct-drive motor at least partially coincide in the direction along the central axis of the inner barrel.
The washing machine of the invention removes a speed reduction clutch structure, and simultaneously, the first direct drive motor and the second direct drive motor are at least partially overlapped along the central axis direction of the inner barrel, thereby greatly reducing the overall height of the driving device, enabling the washing barrel mechanism of the whole machine to be designed deeper on the premise of the same height and size of the box body, enabling the whole machine to expand larger capacity, reducing the design and installation of mechanical transmission and parts, and having high washing and rinsing efficiency and high reliability. The washing machine can be provided with a plurality of personalized programs, and the use experience of a user of the washing machine is improved.
Drawings
Fig. 1 is a schematic structural view of a washing machine according to an embodiment of the present invention.
Detailed Description
A washing machine and a control method thereof of the present invention will be described in detail with reference to the accompanying drawings:
as shown in fig. 1, the present embodiment provides a washing machine including:
an inner barrel 3;
an impeller 5 disposed in the inner tub 3;
the first direct-drive motor 22 is connected with the impeller 5 to drive the impeller 5 to rotate;
and a second direct drive motor 23 connected with the inner barrel 3 to drive the inner barrel 3 to rotate.
The embodiment provides a washing machine with double direct-drive motors, a first direct-drive motor 22 drives an impeller 5 to rotate, a second direct-drive motor 23 drives an inner barrel 3 to rotate, various working modes such as independent impeller rotation, single inner barrel rotation, impeller and inner barrel reverse rotation, impeller and inner barrel homodromous rotation and the like can be realized by controlling the first direct-drive motor 22 and the second direct-drive motor 23, the working mode matched with the impeller can be selected according to washing requirements, the clothes washing effect is improved, and the washing clothes can be pertinently nursed.
In addition, the embodiment realizes a multi-power and multi-combination washing mode of the washing machine through two direct drive motors, cancels a speed reduction clutch device, simplifies the whole structure and is simple and convenient to assemble; the technology of the direct drive motor is relatively mature, certain cost can be kept, and stability and reliability are high.
The washing machine of the embodiment removes a speed reduction clutch structure, greatly reduces the overall height of the driving device, and can ensure that the washing barrel mechanism of the whole machine is designed to be deeper and the whole machine can expand larger capacity on the premise of the same height and size of the box body. In order to further reduce the height of the driving device, and further expand the volume, the first direct drive motor 22 and the second direct drive motor 23 at least partially overlap in the central axis direction of the inner tub.
Further, the washing machine of the embodiment comprises a pulsator shaft 6 and an inner barrel shaft 7 sleeved outside the pulsator shaft 6, wherein one end of the pulsator shaft 6 is fixedly connected with the pulsator 5, the other end of the pulsator shaft is connected with the first direct-drive motor 22, one end of the inner barrel shaft 7 is fixedly connected with the inner barrel 3, and the other end of the inner barrel shaft is connected with the second direct-drive motor 23.
In the embodiment, the first direct drive motor 22/the second direct drive motor 23 is provided with a containing cavity 26, and at least part of the second direct drive motor 23/the first direct drive motor 22 is positioned in the containing cavity 26.
In the embodiment, the accommodating cavity is arranged in the first direct drive motor 22/the second direct drive motor 23, and the second direct drive motor 23/the first direct drive motor 22 is arranged in the accommodating cavity, so that the first direct drive motor 22 and the second direct drive motor 23 are at least partially overlapped along the central axis direction of the inner barrel, and the overall height of the driving device is reduced.
Specifically, the first direct drive motor 22 of the present embodiment includes a first rotor 13 and a first stator 14 located inside the first rotor 13, and the impeller shaft 6 is fixedly connected to the first rotor 13; the first stator 14 is hollow inside to form the accommodating chamber 26, and at least a part of the second driving motor 23 is located in the accommodating chamber.
Preferably, the second driving motor 23 is entirely located in the accommodating chamber 26.
As another embodiment (not shown) of this embodiment, the second direct drive motor 23 includes a second rotor 12 and a second stator 11 located inside the second rotor 12, and the inner tub shaft 7 is fixedly connected to the second rotor 12;
the second rotor 12 is provided with a second rotor end cover 17 fixedly connected with the inner barrel shaft 7, the middle part of the second rotor end cover 17 is sunken towards the barrel bottom direction of the inner barrel 3 to form the accommodating cavity 26, and at least part of the first driving motor 22 is positioned in the accommodating cavity 26; preferably, the first drive motor 22 is located entirely within the receiving cavity 26.
In order to realize the connection between the two direct drive motors and the pulsator and the inner tub, as an implementation manner of this embodiment, the first direct drive motor 22 of this embodiment includes a first rotor 13 and a first stator 14, the washing machine includes a pulsator shaft 6, one end of the pulsator shaft 6 is fixedly connected to the pulsator 5, and the other end is fixedly connected to the first rotor 13.
The second direct drive motor 23 comprises a second rotor 12 and a second stator 11, the washing machine comprises an inner barrel shaft 7 sleeved outside the impeller shaft 6, one end of the inner barrel shaft 7 is fixedly connected with the inner barrel 3, and the other end of the inner barrel shaft is fixedly connected with the second rotor 12.
The first direct drive motor 22/the second direct drive motor 23 has a through channel 16 through which the inner tub shaft 7/the pulsator shaft 6 can pass.
In the embodiment, the through channel 16 for the inner tub shaft 7/the pulsator shaft 6 to pass through is arranged on the first direct-drive motor 22/the second direct-drive motor 23, so that the connection between the pulsator shaft and the inner tub shaft and the first direct-drive motor 22 and the second direct-drive motor 23 can be realized respectively.
In this embodiment, the through channel 16 for the inner tub shaft 7 to pass through may be disposed on the first direct drive motor 22, or the through channel 16 for the pulsator shaft 6 to pass through may be disposed on the second direct drive motor 23, and different disposing manners correspond to the disposing positions of the direct drive motors and different connection manners. As an implementation manner of this embodiment, in this embodiment, the distance between the first direct drive motor 22 and the bottom of the inner tub 3 along the central axis is greater than the distance between the second direct drive motor 23 and the bottom of the inner tub 3 along the central axis; said second direct drive motor 23 has a through channel 16 through which the impeller shaft 6 can pass.
According to the structural characteristics that the impeller shaft 6 of the washing machine is sleeved inside the inner barrel shaft 7, the first direct drive motor 22 and the second direct drive motor 23 are arranged up and down, and meanwhile, the second direct drive motor 23 is provided with the through channel 16 through which the impeller shaft 6 can pass.
Specifically, when the second direct drive motor of the present embodiment is an external rotor motor (as shown in fig. 1), the second stator 12 is located inside the second rotor 11, the second rotor 11 has a second rotor end cover 17 fixedly connected to the inner tub shaft 7, and the center of the second rotor end cover 17 has an annular assembling portion for fixedly assembling with the inner tub shaft 7; and a through channel 16 for the impeller shaft 6 to pass through is formed in the annular assembling part on the second rotor end cover 17.
When the second direct drive motor of this embodiment is an inner rotor motor (not shown), the second stator is located outside the second rotor, the second stator is provided with a first through channel, the rotor is provided with a second through channel coaxial with the first through channel, and the first through channel and the second through channel together form a through channel through which the impeller shaft can pass.
Further, the first direct drive motor of the present embodiment adopts an external rotor motor (as shown in fig. 1), the first stator 14 is located inside the first rotor 13, the first rotor 13 has a first rotor end cap 15 fixedly connected to the pulsator shaft 6, and the pulsator shaft 6 is fixedly connected to the pulsator 5 through the through channel 16, the inner channel of the inner tub shaft 7, and the bottom of the inner tub 3.
Further, the washing machine of the present embodiment includes an outer tub 2 disposed outside an inner tub 3, a fixing device 9 is disposed on a bottom of the outer tub 2, and a positioning device 10 slidably engaged with/disengaged from the fixing device 8 along an axial direction thereof is disposed on the inner tub shaft 7.
The washing machine of the embodiment can realize the washing effect under multiple working conditions by controlling the meshing state of the fixing device 9 and the positioning device 10 and controlling the power output of the first direct drive motor and the second direct drive motor.
As an embodiment of this embodiment, the fixing device 9 includes a fixing sleeve fixedly installed on the bottom of the outer barrel 2 and sleeved outside the inner barrel shaft 7, and an end of the fixing sleeve has a fixing sleeve engaging tooth.
The positioning device 10 comprises a sliding sleeve which is sleeved on the inner cylinder shaft 7 and can slide along the axial direction of the inner cylinder shaft, and a driving mechanism which drives the sliding sleeve to slide along the axial direction of the inner cylinder shaft, wherein one end part of the sliding sleeve is provided with a sliding sleeve meshing tooth which can be fixedly meshed with the fixed sleeve meshing tooth. The driving mechanism comprises a motor and a shifting fork which can shift the sliding sleeve up and down under the driving of the motor, or the driving structure comprises an electromagnetic device and a permanent magnet arranged on the sliding sleeve, and other mechanisms which can drive the sliding sleeve to axially slide.
In order to realize the installation of the first direct drive motor 22 and the second direct drive motor 23, the tub bottom of the outer tub 2 of the present embodiment is provided with a first fixing frame 24 for fixedly connecting the first stator 14 and a second fixing frame 25 for fixedly connecting the second stator 11.
Or, a common fixing bracket for fixedly connecting the first stator 14 and the second stator 11 is disposed at the bottom of the outer tub 2.
As an implementation manner of this embodiment, in this embodiment, different types of direct drive motors can be selected according to the stress characteristics of the pulsator shaft 6 and the inner tub shaft 7 during operation, and specifically, the output torque of the first direct drive motor 22 is greater than or equal to the output torque of the second direct drive motor 23.
Preferably, the output torque of the first direct drive motor 22 is larger than the output torque of the second direct drive motor 23.
The motor with smaller torque is responsible for the dehydration function, and the motor with larger torque is responsible for the washing and rinsing functions. The motor with larger torque runs at a lower speed, and is usually controlled to be 80rpm to 180 rpm; the motor with smaller torque uses higher speed, usually controlled at 600rpm to 1000 rpm. Therefore, the driving of the impeller shaft and the inner barrel shaft is ensured according to the working characteristics of the washing machine, the cost is reduced, and the installation space is saved.
As another embodiment of this embodiment, in order to implement the connection between the direct drive motor and the pulsator and the inner tub, the washing machine of this embodiment includes an input shaft and an input shaft sleeve sleeved outside the input shaft, one end of the input shaft is fixedly connected to the first direct drive motor, the other end is fixedly connected to the pulsator shaft, one end of the input shaft sleeve is fixedly connected to the second direct drive motor, and the other end is fixedly connected to the inner tub shaft. Therefore, the inner barrel and the impeller assembly can be independently assembled into a module, the first direct drive motor and the second direct drive motor can be independently assembled into a module, and then the two modules are assembled.
In order to achieve stability of power transmission, a first bearing 18 and a second bearing 21 are disposed between the impeller shaft 6 and the inner tub shaft 7, and a third bearing 19 is disposed between the inner tub shaft and the bottom of the outer tub.
The bottom of the outer tub 2 of the present embodiment is provided with a drain mechanism 20 for controlling drainage and a water level detection device 8 for performing water level detection.
The washing machine of the embodiment further comprises a box body 1, and the outer barrel 2 is hung in the box body 1 of the washing machine through a damping hanging rod 4.
In the washing process, the washing machine controls the first direct-drive motor to work alone to drive the impeller to rotate, and/or controls the first direct-drive motor and the second direct-drive motor to work cooperatively to drive the impeller and the inner barrel to rotate respectively;
in the dehydration process, the washing machine controls the first direct drive motor and the second direct drive motor to work simultaneously and respectively drives the impeller and the inner barrel to rotate at the same speed and the same direction, or the washing machine controls the second direct drive motor to work alone and drives the inner barrel to drive the impeller to rotate at the same speed and the same direction.
Further, the washing machine of the present embodiment has:
single power washing mode: in the washing process, the washing machine control positioning device is fixedly connected with the fixing device, and controls the first direct-drive motor to work independently to drive the impeller to rotate.
And/or, a hand wash mode: in the washing process, the washing machine controls the positioning device to be separated from the fixing device, controls the first direct-drive motor to work independently and drives the impeller to rotate, the second direct-drive motor is powered off, and the inner barrel is in a free rotation state.
And/or, dual power wash mode: in the washing process, the washing machine controls the positioning device to be separated from the fixing device, controls the first direct-drive motor and the second direct-drive motor to rotate reversely, and drives the impeller and the inner barrel to rotate reversely.
And/or, a gentle wash mode: in the washing process, the washing machine controls the positioning device to be separated from the fixing device, controls the first direct-drive motor and the second direct-drive motor to rotate in the same direction, and drives the impeller and the inner barrel to rotate in the same direction.
Further, in the dewatering process of the washing machine in the embodiment, the first direct drive motor and the second direct drive motor can be controlled to work together, so that the inner barrel and the impeller rotate at the same speed and in the same direction to dewater. The second direct drive motor can be controlled to work only, the first direct drive motor is not electrified to work, and the washing machine control positioning device is separated from the fixing device, so that the impeller is positioned in the inner barrel and rotates along with the inner barrel at the same speed and in the same direction, and dehydration is realized.
The washing machine of the embodiment removes a speed reduction clutch structure, and simultaneously, the first direct drive motor 22 and the second direct drive motor 23 are at least partially overlapped in the direction of the central axis of the inner barrel, so that the overall height of the driving device is greatly reduced, on the premise of the same height and size of the box body, the washing barrel mechanism of the whole machine can be designed deeper, the whole machine can expand larger capacity, mechanical transmission and design and installation of parts are reduced, washing and rinsing are efficient, and the reliability is high. The washing machine of the embodiment can be provided with a plurality of personalized programs, and the use experience of a user of the washing machine is improved.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A washing machine, characterized by comprising:
an inner barrel;
the wave wheel is arranged in the inner barrel;
the first direct-drive motor is connected with the impeller to drive the impeller to rotate;
the second direct-drive motor is connected with the inner barrel to drive the inner barrel to rotate;
the first direct-drive motor and the second direct-drive motor are at least partially overlapped in the direction along the central axis of the inner barrel.
2. The washing machine as claimed in claim 1, comprising a pulsator shaft and an inner tub shaft sleeved outside the pulsator shaft, wherein one end of the pulsator shaft is fixedly connected with a pulsator, the other end of the pulsator shaft is connected with a first direct drive motor, one end of the inner tub shaft is fixedly connected with an inner tub, and the other end of the inner tub shaft is connected with a second direct drive motor;
the first direct drive motor/the second direct drive motor is provided with an accommodating cavity, and at least part of the second direct drive motor/the first direct drive motor is positioned in the accommodating cavity.
3. The washing machine as claimed in claim 2, wherein the first direct drive motor includes a first rotor and a first stator inside the first rotor, and the pulsator shaft is fixedly connected to the first rotor;
the first stator is hollow inside to form the accommodating cavity, and at least part of the second direct drive motor is positioned in the accommodating cavity;
preferably, the second direct drive motor is integrally located in the accommodating cavity.
4. The washing machine as claimed in claim 3, wherein the second direct drive motor includes a second rotor and a second stator disposed inside the second rotor, the second rotor has a second rotor cover fixedly connected to the inner tub shaft, a through passage communicating with the inside of the inner tub shaft is formed at the center of the second rotor cover, and the pulsator shaft passes through the through passage and the inner tub shaft and is fixedly connected to the pulsator.
5. The washing machine as claimed in claim 2, wherein the second direct drive motor includes a second rotor and a second stator positioned inside the second rotor, and the inner tub shaft is fixedly connected with the second rotor;
the second rotor is provided with a second rotor end cover fixedly connected with the inner barrel shaft, the middle part of the second rotor end cover is sunken towards the barrel bottom direction of the inner barrel to form the accommodating cavity, and at least part of the first direct-drive motor is positioned in the accommodating cavity;
preferably, the first direct drive motor is entirely located in the accommodating cavity.
6. The washing machine as claimed in any one of claims 1 to 5, comprising an outer tub disposed outside the inner tub, wherein a first fixing frame for fixedly connecting the first stator and a second fixing frame for fixedly connecting the second stator are disposed at a bottom of the outer tub;
or the bottom of the outer barrel is provided with a shared fixed support for fixedly connecting the first stator and the second stator.
7. A washing machine as claimed in any one of claims 1 to 5, comprising an outer tub disposed outside the inner tub, the outer tub having a fixing means provided on a bottom thereof, and a positioning means provided on the inner tub shaft to be slidably engaged with/disengaged from the fixing means in an axial direction thereof;
preferably, the fixing device comprises a fixing sleeve fixedly mounted on the bottom of the outer barrel and sleeved outside the inner barrel shaft, and the end part of the fixing sleeve is provided with a fixing sleeve meshing tooth;
the positioning device comprises a sliding sleeve which is sleeved on the inner cylinder shaft and can slide along the axial direction of the inner cylinder shaft and a driving mechanism which drives the sliding sleeve to slide along the axial direction of the inner cylinder shaft, wherein one end part of the sliding sleeve is provided with a sliding sleeve meshing tooth which can be fixedly meshed with the fixed sleeve meshing tooth.
8. The washing machine as claimed in claim 1, wherein the output torque of the first direct drive motor is greater than or equal to the output torque of the second direct drive motor;
preferably, the output torque of the first direct drive motor is larger than that of the second direct drive motor.
9. A control method of a washing machine as claimed in any one of claims 1 to 8, wherein the washing machine controls the first direct drive motor to operate alone to drive the pulsator to operate and/or controls the first direct drive motor and the second direct drive motor to operate in cooperation to drive the pulsator and the inner tub to operate, respectively, during washing;
in the dehydration process, the washing machine controls the first direct drive motor and the second direct drive motor to work simultaneously and respectively drives the impeller and the inner barrel to rotate at the same speed and the same direction, or the washing machine controls the second direct drive motor to work alone and drives the inner barrel to drive the impeller to rotate at the same speed and the same direction.
10. The control method of a washing machine according to claim 9, wherein the washing machine has:
single power washing mode: in the washing process, the washing machine control positioning device is fixedly connected with the fixing device, and controls the first direct-drive motor to work independently to drive the impeller to rotate;
and/or, a hand wash mode: in the washing process, the washing machine controls the positioning device to be separated from the fixing device, controls the first direct-drive motor to work independently, drives the impeller to run, switches off the second direct-drive motor, and enables the inner barrel to be in a free rotation state;
and/or, dual power wash mode: in the washing process, the washing machine controls the positioning device to be separated from the fixing device, controls the first direct-drive motor and the second direct-drive motor to rotate reversely, and drives the impeller and the inner barrel to rotate reversely;
and/or, a gentle wash mode: in the washing process, the washing machine controls the positioning device to be separated from the fixing device, controls the first direct-drive motor and the second direct-drive motor to rotate in the same direction, and drives the impeller and the inner barrel to rotate in the same direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910982287.5A CN112746459A (en) | 2019-10-16 | 2019-10-16 | Washing machine and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910982287.5A CN112746459A (en) | 2019-10-16 | 2019-10-16 | Washing machine and control method thereof |
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| CN112746459A true CN112746459A (en) | 2021-05-04 |
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Application publication date: 20210504 |