WO2021217955A1 - 一种波轮洗衣机及其动力驱动装置、控制方法 - Google Patents

一种波轮洗衣机及其动力驱动装置、控制方法 Download PDF

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Publication number
WO2021217955A1
WO2021217955A1 PCT/CN2020/109502 CN2020109502W WO2021217955A1 WO 2021217955 A1 WO2021217955 A1 WO 2021217955A1 CN 2020109502 W CN2020109502 W CN 2020109502W WO 2021217955 A1 WO2021217955 A1 WO 2021217955A1
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WO
WIPO (PCT)
Prior art keywords
transmission shaft
magnetorheological fluid
fluid clutch
bottom plate
opening
Prior art date
Application number
PCT/CN2020/109502
Other languages
English (en)
French (fr)
Inventor
张涛
李亚东
Original Assignee
无锡小天鹅电器有限公司
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Publication date
Application filed by 无锡小天鹅电器有限公司 filed Critical 无锡小天鹅电器有限公司
Publication of WO2021217955A1 publication Critical patent/WO2021217955A1/zh

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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
    • 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 
    • 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 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/40—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of centrifugal separation of water from the laundry
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D35/00—Fluid clutches in which the clutching is predominantly obtained by fluid adhesion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting

Definitions

  • This application relates to the technical field of washing machines, and in particular to a pulsator washing machine and its power driving device and control method.
  • the existing fully automatic pulsator washing machine has a clutch, wherein the role of the clutch is to switch between washing and dehydration. Specifically, the pulsator rotates during washing, and the inner tub and the pulsator rotate simultaneously during dehydration.
  • the commonly used clutch realizes the conversion between washing and dehydration through a mechanical structure.
  • due to the complex mechanical structure it is easy to malfunction. In actual operation, abnormal noise caused by abnormal or improper locking of the coil often occurs. For this reason, a new type of clutch is designed to switch between washing and dehydration through magnetorheological fluid, reducing the failure rate of the clutch and improving the user experience.
  • the embodiments of the present application are expected to provide a pulsator washing machine with a simple structure and reliable clutch and a power driving device and a control method thereof.
  • the first aspect of the embodiments of the present application provides a power drive device for a pulsator washing machine, which includes a bottom plate assembly, a motor, a first transmission shaft, a second transmission shaft, and a magnetorheological fluid clutch.
  • the motor is arranged on the second side of the bottom plate assembly, and the first drive shaft
  • One end is used to connect with the pulsator of the pulsator washing machine, the second end of the first transmission shaft is connected to the motor, and the first end and the second end of the first transmission shaft rotate synchronously;
  • the second The first end of the transmission shaft is used to connect with the inner cylinder of the pulsator washing machine;
  • the magnetorheological fluid clutch is arranged on the second side of the bottom plate assembly, and the magnetorheological fluid is encapsulated in the magnetorheological fluid clutch,
  • the first transmission shaft passes through the magnetorheological fluid; the second end of the second transmission shaft and the first transmission shaft are switched between driving connection and disconnection through the magnetorheological fluid clutch .
  • the second transmission shaft is a hollow shaft
  • the second transmission shaft is sleeved on the outer surface of the first transmission shaft
  • the first transmission shaft and the second transmission shaft are coaxially arranged.
  • At least one key groove is formed on the surface of the part of the first transmission shaft located in the magnetorheological fluid; and/or, the part of the first transmission shaft located in the magnetorheological fluid The surface is rough.
  • the power drive device includes a mounting frame connected to the second side of the bottom plate assembly, the mounting frame has an accommodating space, and the magnetorheological fluid clutch is disposed in the accommodating space In; the motor is arranged on the side of the mounting frame away from the bottom plate assembly, and the first transmission shaft passes through the containing space.
  • the magnetorheological fluid clutch includes a housing and at least a pair of positive and negative electromagnetic poles.
  • the housing has a liquid storage cavity for storing the magnetorheological fluid, and the positive electromagnetic pole and The negative electromagnetic poles are arranged on opposite sides of the housing; the second end of the second transmission shaft is fixedly connected with the housing.
  • the housing has a first opening and a second opening that are coaxially arranged, and the first transmission shaft passes through the first opening and the second opening; the first opening is located at The housing is close to one side of the bottom plate assembly, and the second end of the second transmission shaft is covered around the first opening.
  • the magnetorheological fluid clutch further includes a sleeve arranged around the second opening on the outside of the housing; the first transmission shaft is inserted through the sleeve, and the mounting frame
  • An escape port is provided at one end away from the bottom plate assembly, a sleeve is inserted through the escape port, and the housing is installed on the mounting frame through the sleeve.
  • the power driving device includes a first bearing sleeved on the sleeve, and the first bearing is provided between the inner wall of the escape port and the outer surface of the sleeve.
  • the magnetorheological fluid clutch includes at least two sealed bearings arranged in the liquid storage cavity, the sealed bearing is sleeved on the first transmission shaft, and one of the sealed bearings is arranged At the first opening to seal the gap between the first transmission shaft and the inner wall of the first opening; wherein another of the sealed bearings is provided at the second opening to seal the first opening A gap between a transmission shaft and the inner wall of the second opening.
  • a second aspect of the embodiments of the present application provides a pulsator washing machine, including a pulsator, an inner tub, a tub, a control device, and any one of the above-mentioned power driving devices, the pulsator is rotatably arranged at the bottom of the inner tub;
  • the inner cylinder is rotatably arranged in the water bucket, and the bottom of the water bucket is provided with a mounting hole; the first transmission shaft and the second transmission shaft extend into the water bucket through the mounting hole ,
  • the bottom plate assembly seals the mounting hole, the first end of the first transmission shaft is fixedly connected to the pulsator, and the first end of the second transmission shaft is fixedly connected to the inner cylinder;
  • the control device is connected to The magnetorheological fluid clutch is electrically connected.
  • the second aspect of the embodiments of the present application provides the control method of any one of the above-mentioned pulsator washing machines, including the following steps:
  • the magnetorheological fluid clutch drivingly connecting the first transmission shaft and the second transmission shaft to drive the pulsator and the inner cylinder to rotate synchronously;
  • the magnetorheological fluid clutch is controlled to be powered off, and the magnetorheological fluid clutch disconnects the first transmission shaft and the second transmission shaft.
  • the power drive device of the embodiment of the present application has a simple structure, no relative movement of mechanical parts during the clutching process, a low failure rate, and high working reliability; in addition, the magnetorheological fluid clutch is arranged on the second bottom plate assembly away from the tub On the other hand, the magnetorheological fluid clutch will not be immersed in water, which can reduce the requirements for the waterproof level of the magnetorheological fluid clutch; in addition, the second side of the bottom plate assembly away from the bucket has a larger installation space, which is easy to install and also Reduce the size limit of the magnetorheological fluid clutch.
  • Fig. 1 is a schematic structural diagram of a power drive device according to an embodiment of the application
  • FIG. 2 is a schematic diagram of the combination of the first transmission shaft, the second transmission shaft and the magnetorheological fluid clutch shown in FIG. 1;
  • FIG. 3 is a schematic flowchart of a control method of a pulsator washing machine according to an embodiment of the application.
  • the orientation or positional relationship of "upper” and “lower” is based on the orientation or positional relationship shown in FIG. The description does not indicate or imply that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application.
  • the embodiment of the application provides a pulsator washing machine, which includes a pulsator, an inner tub, a tub, and a power driving device.
  • the pulsator is rotatably arranged at the bottom of the inner cylinder, and the inner cylinder is rotatably arranged in the water bucket. That is to say, the inner tube is a perforated inner tube, and the washing water depends on the bucket to hold the water.
  • the power drive device drives the pulsator to rotate. It should be noted that at this time the inner cylinder can be in a free state or a fixed static state. There is no restriction here; during the dehydration process, the power drive device drives The inner cylinder and the pulsator rotate at high speed, and then use centrifugal force to dehydrate.
  • the power driving device includes a bottom plate assembly 10, a motor 13, a first transmission shaft 11, a second transmission shaft 12, a control device, and a magnetorheological fluid clutch 14.
  • the control device is electrically connected with the magnetorheological fluid clutch 14 to control the on and off of the magnetorheological fluid clutch 14.
  • the bottom plate assembly 10 includes a first side for sealing a tub of the pulsator washing machine and a second side facing away from the tub. Specifically, the bottom of the bucket is provided with mounting holes, the first transmission shaft 11 and the second transmission shaft 12 extend into the bucket through the mounting holes, and the bottom plate assembly seals the mounting holes to avoid water leakage at the mounting holes.
  • the motor 13 is arranged on the second side of the bottom plate assembly 10.
  • the first transmission shaft 11 penetrates the bottom plate assembly 10, the first end of the first transmission shaft 11 is located on the first side of the bottom plate assembly 10 and is used to connect with the pulsator of the pulsator washing machine, and the second end of the first transmission shaft 11 is located on the bottom plate.
  • the second side of the assembly 10 is drivingly connected with the motor 13.
  • the first end and the second end of the first transmission shaft 11 rotate synchronously, that is, the first transmission shaft 11 is a rigid unit, and the motor 13 directly drives the rotation of the first transmission shaft 11 and directly drives the pulsator to rotate, that is, the motor 13
  • the gear transmission system in the prior art is omitted, which can make the structure of the power drive device simple and compact, and also avoid the noise caused by the gear transmission in the prior art.
  • the second transmission shaft 12 penetrates the bottom plate assembly 10.
  • the first end of the second transmission shaft 12 is located on the first side of the bottom plate assembly 10 and is used to connect with the inner tub of the pulsator washing machine, and the second end of the second transmission shaft 12 is located on the second side of the bottom plate assembly 10.
  • the magnetorheological fluid clutch 14 is arranged on the second side of the bottom plate assembly 10, the magnetorheological fluid 141 is encapsulated in the magnetorheological fluid clutch 14, and the first transmission shaft 11 passes through the magnetorheological fluid 141; The second end and the first transmission shaft 11 are switched between driving connection and disconnection through the magnetorheological fluid clutch 14.
  • the magnetorheological fluid clutch 14 is arranged on the second side of the bottom plate assembly 10 away from the tub, that is, the magnetorheological fluid clutch 14 will not be immersed in water, which can reduce the magnetic resistance.
  • the waterproof level of the rheological fluid clutch 14 is required; in addition, the second side of the bottom plate assembly 10 facing away from the tub has a larger installation space, which is convenient for installation and reduces the size restriction on the magnetorheological fluid clutch 14.
  • the working principle of the magnetorheological fluid clutch 14 of the power drive device of the embodiment of the present application is: when the magnetorheological fluid clutch 14 is not energized, the magnetorheological fluid 141 assumes a Newtonian fluid state. At this time, the first transmission shaft 11 is in the state of The magnetorheological fluid 141 rotates freely; when the magnetorheological fluid clutch 14 is energized, the magnetorheological fluid 141 becomes a solid-like form under the action of a magnetic field and forms a magnetic link in the direction of the magnetic field. When the first transmission shaft 11 rotates, The torque of the first transmission shaft 11 is transmitted to the second transmission shaft 12 by the magnetic pulling force of the magnetic link, and the driving connection between the first transmission shaft 11 and the second transmission shaft 12 is realized.
  • the response speed of the magnetorheological fluid 141 is milliseconds, with good reversibility, high reliability, stable performance, and low energy consumption. Therefore, the power drive device of the embodiment of the present application has a simple structure and no mechanical parts are involved in the clutch process. Movement, low failure rate, low noise and high working reliability.
  • the magnetorheological fluid clutch 14 When the pulsator washing machine does not need to be dehydrated, the magnetorheological fluid clutch 14 is maintained in a power-off state, and the first transmission shaft 11 and the second transmission shaft 12 are maintained in a disconnected state. When dehydration is needed, the magnetorheological fluid clutch 14 is energized, and the first transmission shaft 11 and the second transmission shaft 12 are switched to a driving connection state.
  • the specific structure of the first transmission shaft 11 and the second transmission shaft 12 is not limited.
  • the second transmission shaft 12 is a hollow shaft, and the second transmission shaft 12 is sleeved on the outer surface of the first transmission shaft 11, which can make the power drive device compact in structure, and the first transmission shaft 11 It is arranged coaxially with the second transmission shaft 12, so that the pulsator and the inner cylinder rotate coaxially, avoiding eccentric rotation.
  • the specific structure of the bottom plate assembly 10 is not limited, as long as it can seal the above-mentioned escape opening. It should be noted that the bottom plate assembly 10 can be fastened to the outer cylinder by fasteners such as screws, and the outer cylinder bears the weight of the bottom plate assembly 10.
  • the surface of the part of the first transmission shaft 11 located in the magnetorheological fluid 141 At least one keyway 11a is formed.
  • the keyway 11a can increase the torque transmission between the magnetorheological fluid 141 and the first transmission shaft 11 and improve the reliability of torque transmission.
  • the specific structure and shape of the keyway 11a is not limited. Specifically, in an embodiment, the key groove 11a extends along the axial direction of the first transmission shaft 11 to increase the effective area of the magnetorheological fluid 141 and the first transmission shaft 11.
  • the number of the keyway 11a is not limited, and it may be one or more. It should be noted that the depth of the key groove 11 a recessed into the surface of the first transmission shaft 11 and the length of the key groove 11 a along the axial extension of the first transmission shaft 11 need to be controlled within a proper range to ensure the structural strength of the first transmission shaft 11.
  • the surface of the portion of the first transmission shaft 11 located in the magnetorheological fluid 141 is a rough surface, that is, the surface is a bumpy, bumpy structure.
  • the rough surface can increase the binding force between the magnetorheological fluid 141 and the surface of the first transmission shaft 11 and improve the reliability of torque transmission.
  • the power drive device includes a mounting frame 16, which is connected to the second side of the bottom plate assembly 10.
  • the motor 13 is fixedly connected to the mounting frame 16, and the mounting frame 16 is provided for the motor 13 Installation location.
  • the mounting frame 16 is roughly in a barrel shape, and the mounting frame 16 has an accommodating space 16 a, and the accommodating space 16 a is open toward the bottom plate assembly 10.
  • the magnetorheological fluid clutch 14 is arranged in the accommodating space 16a.
  • the mounting frame 16 provides the accommodating space 16a for the magnetorheological fluid clutch 14 and protects the magnetorheological fluid clutch 14 to prevent other components from rubbing against the magnetorheological fluid. Liquid clutch 14.
  • the motor 13 is arranged on the side of the mounting frame 16 away from the bottom plate assembly 10. Specifically, referring to FIG. 1, the motor 13 includes a stator 131 and a rotor 132; the stator 131 is fixedly connected to the mounting frame 16, and the rotor 132 is fixedly connected to the first transmission shaft 11.
  • the first transmission shaft 11 passes through the accommodating space 16a.
  • the side of the mounting frame 16 facing away from the bottom plate assembly 10 has an escape port, and the first transmission shaft 11 passes through the escape port.
  • the side walls of the accommodating space 16a may be a closed structure composed of a plate body, or may be a network structure formed by staggered ribs, etc., which is not limited here.
  • the magnetorheological fluid clutch 14 includes a housing 142 and at least a pair of positive electromagnetic poles 145 and a negative electromagnetic pole 146.
  • the housing 142 has a liquid storage cavity for storing the magnetorheological fluid 141, and the positive electromagnetic pole 145
  • the and negative electromagnetic poles 146 are arranged on opposite sides of the housing 142, specifically, arranged between the outer surface of the housing 142 and the inner wall of the mounting frame 16.
  • the second end of the second transmission shaft 12 is fixedly connected to the housing 142.
  • the first transmission shaft 11 drives the magnetorheological fluid 141 and the housing 142 to rotate synchronously, and the housing 142 then Drive the second transmission shaft 12 to rotate synchronously.
  • the manner in which the second end of the second transmission shaft 12 is fixedly connected to the housing 142 is not limited.
  • it may be welding, screw connection, bolt connection, integral molding, etc., which is not limited here.
  • the housing 142 has a first opening 142a and a second opening 142b that are coaxially arranged, and the first transmission shaft 11 penetrates through the liquid storage cavity, the first opening 142a and the second opening 142b, and the first opening 142a Located on the side of the housing 142 close to the bottom plate assembly 10, the second end of the second transmission shaft 12 is arranged around the first opening 142a, so that the second transmission shaft 12 and the first transmission shaft 11 and the housing 142 rotates coaxially, making the power drive device simple and compact.
  • the magnetorheological fluid clutch 14 further includes a sleeve 144 arranged around the second opening 142b outside the housing 142.
  • the sleeve 144 is inserted in the above-mentioned escape port, and the first transmission
  • the shaft 11 passes through the sleeve 144, and the housing 142 is installed on the mounting frame 16 through the sleeve 144.
  • the power driving device includes a first bearing 151 sleeved on the sleeve 144, and the first bearing 151 is disposed between the inner wall of the escape port and the outer surface of the sleeve 144.
  • the first bearing 151 can reduce the friction between the first transmission shaft 11 and the sleeve 144, and can also act as a positioning guide for the rotation of the first transmission shaft 151.
  • the power driving device includes a second bearing 152 sleeved on the outer surface of the second transmission shaft 12, and the second bearing 152 is disposed between the second transmission shaft 12 and the bottom plate assembly 10. It should be noted that the first bearing 151 and the second bearing 152 are coaxially arranged to jointly play a positioning and guiding role for the first transmission shaft 11 and the second transmission shaft 12.
  • the magnetorheological fluid clutch 14 includes at least two sealed bearings 143 arranged in the liquid storage cavity, the sealed bearings 143 are sleeved on the first transmission shaft 11, and one of the sealed bearings 143 is arranged in the first opening 142a.
  • another sealed bearing 143 is provided at the second opening 142b to seal the gap between the inner wall of the first transmission shaft 11 and the second opening 142b The gap between.
  • the housing 142 may be an integrally formed structure, or may be a split structure and fixedly connected together.
  • the housing 142 includes an upper housing 1421 and a lower housing 1422.
  • the upper housing 1421 and the lower housing 1422 are upper and lower half-shell structures.
  • the body 1421 and the second transmission shaft 12 are integrally formed, and the lower housing 1422 and the sleeve 144 are integrally formed.
  • the power drive device further includes a plurality of sliding bearings 17 sleeved on the first transmission shaft 11, and the above-mentioned sliding bearings 17 may be provided at appropriate positions on the first transmission shaft 11, for example, Referring to FIG. 2, at least one sliding bearing 17 is provided between the outer surface of the first end of the first transmission shaft 11 and the inner surface of the first end of the second transmission shaft 12, and the outer surface of the first transmission shaft 11 and A sliding bearing 17 and the like are provided between the inner wall of the sleeve 144. Since the size of the sliding bearing 17 in the radial direction is small, it only needs to occupy a small installation space, which can make the structure of the power drive device more compact.
  • control method includes the following steps:
  • the magnetorheological fluid clutch 14 is controlled to be powered off, so that the form of the magnetorheological fluid 141 in the magnetorheological fluid clutch 14 is changed from solid to liquid, and the magnetorheological fluid clutch 14 will first The transmission shaft 11 and the second transmission shaft 12 are disconnected.
  • the pulsator washing machine may enter the washing state again, or the program ends and the pulsator washing machine is shut down.
  • the acquisition of the dehydration instruction can correspond to the single dehydration mode or the embedded dehydration mode in the washing mode, and there is no restriction here.

Abstract

一种波轮洗衣机及其动力驱动装置、控制方法，动力驱动装置包括底板组件（10）、电机（13）、第一传动轴（11）、第二传动轴（12）以及磁流变液离合器（14），电机（13）设置于底板组件（10）的第二侧，第一传动轴（11）的第一端用于与波轮洗衣机的波轮连接，第一传动轴（11）的第二端与电机（13）连接；第二传动轴（12）的第一端用于与内筒连接；磁流变液离合器（14）设置于底板组件（10）的第二侧，第一传动轴（11）穿过磁流变液离合器（14）的磁流变液（141）；第二传动轴（12）与第一传动轴（11）通过磁流变液离合器（14）在驱动连接和断开连接之间切换。该动力驱动装置，结构简单，故障率低；磁流变液离合器（14）设置在底板组件（10）背离盛水桶的第二侧，能够降低对磁流变液离合器（14）的防水等级要求，再者，安装空间较大，便于安装。

Description

一种波轮洗衣机及其动力驱动装置、控制方法
相关申请的交叉引用
本申请基于申请号为202010351105.7、申请日为2020年04月28日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及洗衣机技术领域，尤其涉及一种波轮洗衣机及其动力驱动装置、控制方法。
背景技术
现有的全自动波轮洗衣机带有离合器，其中离合器的作用是在洗涤和脱水时进行转换，具体地，洗涤的时候波轮转动，脱水的时候内筒和波轮同时转动。目前常用的离合器是通过机械结构来实现洗涤和脱水的转换，但是由于机械结构复杂易出现故障，在实际运行过程中常出现抱簧锁紧异常或者锁紧不到位而导致的异响。为此设计一种新型离合器通过磁流变液来实现洗涤和脱水的切换，减少离合器故障率提升用户体验。
发明内容
有鉴于此，本申请实施例期望提供一种结构简单、离合可靠的波轮洗衣机及其动力驱动装置、控制方法。
为达到上述目的，本申请实施例的第一方面提供一种波轮洗衣机的动力驱动装置，包括底板组件、电机、第一传动轴、第二传动轴以及磁流变液离合器，所述底板组件包括用于密封所述波轮洗衣机的盛水桶的第一侧、 以及背离所述盛水桶的第二侧；所述电机设置于所述底板组件的第二侧，所述第一传动轴的第一端用于与波轮洗衣机的波轮连接，所述第一传动轴的第二端与所述电机连接，所述第一传动轴的第一端和第二端同步转动；所述第二传动轴的第一端用于与波轮洗衣机的内筒连接；所述磁流变液离合器设置于所述底板组件的第二侧，所述磁流变液离合器内封装有磁流变液，所述第一传动轴穿过所述磁流变液；所述第二传动轴的第二端与所述第一传动轴通过所述磁流变液离合器在驱动连接和断开连接之间切换。
一些实施方案中，所述第二传动轴为空心轴，所述第二传动轴套接在所述第一传动轴外表面，所述第一传动轴和所述第二传动轴同轴设置。
一些实施方案中，所述第一传动轴位于所述磁流变液中的部分的表面形成有至少一个键槽；和/或，所述第一传动轴位于所述磁流变液中的部分的表面为毛糙表面。
一些实施方案中，所述动力驱动装置包括安装架，所述安装架连接于所述底板组件的第二侧，所述安装架具有容纳空间，所述磁流变液离合器设置于所述容纳空间内；所述电机设置于所述安装架背离所述底板组件的一侧，所述第一传动轴从所述容纳空间中穿过。
一些实施方案中，磁流变液离合器包括壳体以及至少一对正电磁极和负电磁极，所述壳体具有用于存储所述磁流变液的储液腔，所述正电磁极和所述负电磁极设置于壳体外的相对两侧；所述第二传动轴的第二端与所述壳体固定连接。
一些实施方案中，所述壳体具有同轴设置的第一开口和第二开口，所述第一传动轴穿设于所述第一开口和所述第二开口中；所述第一开口位于所述壳体靠近所述底板组件的一侧，所述第二传动轴的第二端端部罩设于所述第一开口的周围。
一些实施方案中，所述磁流变液离合器还包括罩设于壳体外侧的所述 第二开口周围的套筒；所述第一传动轴穿设于所述套筒中，所述安装架远离所述底板组件的一端设置有避让口，套筒穿设于所述避让口中，所述壳体通过所述套筒安装于所述安装架上。
一些实施方案中，所述动力驱动装置包括套设于所述套筒上的第一轴承，所述第一轴承设置于所述避让口的内壁和所述套筒的外表面之间。
一些实施方案中，所述磁流变液离合器包括至少两个设置于所述储液腔内的密封轴承，所述密封轴承套设于所述第一传动轴上，其中一个所述密封轴承设置于所述第一开口处，以密封所述第一传动轴与所述第一开口的内壁之间的间隙；其中另一个所述密封轴承设置于所述第二开口处，以密封所述第一传动轴与所述第二开口的内壁之间的间隙。
本申请实施例的第二方面提供一种波轮洗衣机，包括波轮、内筒、盛水桶、控制装置以及上述任一的动力驱动装置，所述波轮转动设置于所述内筒的底部；所述内筒转动地设置于所述盛水桶内，所述盛水桶的底部设置有安装孔；所述第一传动轴和所述第二传动轴经所述安装孔伸入所述盛水桶内，所述底板组件密封所述安装孔，所述第一传动轴的第一端与所述波轮固定连接，所述第二传动轴的第一端与内筒固定连接；所述控制装置与所述磁流变液离合器电连接。
本申请实施例的第二方面提供上述任一的波轮洗衣机的控制方法，包括如下步骤：
获取脱水指令；
控制所述磁流变液离合器通电，所述磁流变液离合器将所述第一传动轴与所述第二传动轴驱动连接，以驱动所述波轮和所述内筒同步转动；
在脱水过程结束后，控制所述磁流变液离合器断电，所述磁流变液离合器将第一传动轴和所述第二传动轴断开连接。
本申请实施例的动力驱动装置，结构简单、离合过程中没有机械零部 件的相对运动，故障率低、工作可靠性高；此外，将磁流变液离合器设置在底板组件背离盛水桶的第二侧，磁流变液离合器不会浸泡在水中，如此能够降低对磁流变液离合器的防水等级要求；再者，底板组件背离盛水桶的第二侧具有较大的安装空间，便于安装，也降低对磁流变液离合器的尺寸限制。
附图说明
图1为本申请一实施例的动力驱动装置的结构示意图；
图2为图1所示的第一传动轴、第二传动轴以及磁流变液离合器的结合示意图；
图3为本申请一实施例的波轮洗衣机的控制方法的流程示意图。
具体实施方式
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的技术特征可以相互组合，具体实施方式中的详细描述应理解为本申请宗旨的解释说明，不应视为对本申请的不当限制。
在本申请实施例的描述中，“上”、“下”方位或位置关系为基于附图1所示的方位或位置关系，需要理解的是，这些方位术语仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
本申请实施例提供一种波轮洗衣机，包括波轮、内筒、盛水桶以及动力驱动装置。波轮转动设置于内筒的底部，内筒转动地设置于盛水桶内。也就是说，内筒为有孔内筒，洗涤水依靠盛水桶盛水。
洗涤过程中，动力驱动装置驱动波轮转动，需要说明的是，此时的内筒可以是处于自由状态、或者固定不动的静止状态，在此不做限制；脱水过程中，动力驱动装置驱动内筒和波轮高速转动，进而利用离心力脱水。
请参阅图1和图2，动力驱动装置包括底板组件10、电机13、第一传动轴11、第二传动轴12、控制装置、以及磁流变液离合器14。控制装置与磁流变液离合器14电连接，以控制磁流变液离合器14的通、断电。
底板组件10包括用于密封波轮洗衣机的盛水桶的第一侧以及背离盛水桶的第二侧。具体地，盛水桶的底部设置有安装孔，第一传动轴11和第二传动轴12经安装孔伸入盛水桶内，底板组件密封安装孔，避免安装孔处漏水。
电机13设置于底板组件10的第二侧。第一传动轴11贯穿底板组件10，第一传动轴11的第一端位于底板组件10的第一侧且用于与波轮洗衣机的波轮连接，第一传动轴11的第二端位于底板组件10的第二侧且与电机13驱动连接。第一传动轴11的第一端和第二端同步转动，也就是说，第一传动轴11为一个刚性整体，电机13直接驱动第一传动轴11转动进而直接带动波轮转动，即电机13为直驱电机，省略了现有技术中的齿轮传动系统，能够使得动力驱动装置的结构简单、紧凑，也避免了现有技术中的齿轮传动带来的噪音。
第二传动轴12贯穿底板组件10。第二传动轴12的第一端位于底板组件10的第一侧且用于与波轮洗衣机的内筒连接，第二传动轴12的第二端位于底板组件10的第二侧。
磁流变液离合器14设置于底板组件10的第二侧，磁流变液离合器14内封装有磁流变液141，第一传动轴11穿过磁流变液141；第二传动轴12的第二端与第一传动轴11通过磁流变液离合器14在驱动连接和断开连接之间切换。
本申请实施例的动力驱动装置，将磁流变液离合器14设置在底板组件10背离盛水桶的第二侧，也就是说，磁流变液离合器14不会浸泡在水中，如此能够降低对磁流变液离合器14的防水等级要求；此外，底板组件10 背离盛水桶的第二侧具有较大的安装空间，便于安装，也降低对磁流变液离合器14的尺寸限制。
本申请实施例的动力驱动装置的磁流变液离合器14的工作原理为：当磁流变液离合器14不通电时，磁流变液141呈现牛顿流体状态，此时，第一传动轴11在磁流变液141中自由转动；当向磁流变液离合器14通电后，磁流变液141在磁场作用下成为类固态形式，在磁场方向形成磁链，当第一传动轴11转动时，靠磁链的磁拉力将第一传动轴11的转矩从传递到第二传动轴12，实现第一传动轴11和第二传动轴12的驱动连接。磁流变液141的响应速度为毫秒级，可逆性好，可靠性高，性能稳定，能耗少，因此，本申请实施例的动力驱动装置的结构简单、离合过程中没有机械零部件的相对运动，故障率低、噪音低、工作可靠性高。
当波轮洗衣机不需要脱水时，磁流变液离合器14保持在断电状态，第一传动轴11和第二传动轴12保持在断开连接的状态。当需要脱水时，向磁流变液离合器14通电，第一传动轴11和第二传动轴12切换至驱动连接状态。
第一传动轴11和第二传动轴12的具体结构形式不限。请参阅图2，一实施例中，第二传动轴12为空心轴，第二传动轴12套接在第一传动轴11外表面，如此能够使得动力驱动装置结构紧凑，且第一传动轴11和第二传动轴12同轴设置，使得波轮和内筒同轴转动，避免偏心转动。
底板组件10的具体结构不限，只要能密封上述的避让口即可。需要说明的是，底板组件10可以通过螺钉等紧固件紧固连接于外筒上，由外筒承担底板组件10的重量。
为了提升第一传动轴11和磁流变液141之间的转矩传递效果，一实施例中，请参阅图1和图2，第一传动轴11位于磁流变液141中的部分的表面形成有至少一个键槽11a，在磁流变液141呈类固态的情况下，键槽11a 能够增加磁流变液141与第一传动轴11之间的力矩传递，提升力矩传递可靠性。
键槽11a的具体结构形状不限。具体地，一实施例中，键槽11a沿第一传动轴11的轴向延伸，增大磁流变液141与第一传动轴11的有效作用面积。
键槽11a的数量不限，可以是一个，也可以是多个。需要说明的是，键槽11a凹入第一传动轴11表面的深度以及键槽11a沿第一传动轴11轴向延伸的长度需要控制在合适的范围，以保障第一传动轴11的结构强度。
一些实施例中，第一传动轴11位于磁流变液141中的部分的表面为毛糙表面，即表面为凹凸不平、坑坑洼洼的结构。毛糙表面能够增大磁流变液141与第一传动轴11的表面的结合力，提升力矩传递可靠性。
一实施例中，请参阅图1和图2，动力驱动装置包括安装架16，安装架16连接于底板组件10的第二侧，电机13与安装架16固定连接，安装架16为电机13提供安装位置。具体地，安装架16大致呈桶状，安装架16具有容纳空间16a，容纳空间16a朝向底板组件10敞开。磁流变液离合器14设置于该容纳空间16a内，安装架16为磁流变液离合器14提供容纳空间16a，且对磁流变液离合器14起到保护作用，防止其他部件剐蹭到磁流变液离合器14。
电机13设置于安装架16背离底板组件10的一侧。具体地，请参阅图1，电机13包括定子131和转子132；定子131与安装架16固定连接，转子132与第一传动轴11固定连接。
第一传动轴11从容纳空间16a中穿过。具体地，安装架16背离底板组件10的一侧具有避让口，第一传动轴11穿设于避让口中。
需要说明的是，容纳空间16a的侧壁可以是板体构成的密闭结构，也可以是筋条交错形成的网状结构等，在此不做限制。
一实施例中，磁流变液离合器14包括壳体142和至少一对正电磁极145和负电磁极146，壳体142具有用于存储磁流变液141的储液腔，正电磁极145和负电磁极146设置于壳体142外的相对两侧，具体地，设置于壳体142的外表面和安装架16的内壁之间。第二传动轴12的第二端与壳体142固定连接。当磁流变液141由液态变成类固态后，磁流变液141与壳体142成为一个刚性整体，第一传动轴11带动磁流变液141和壳体142同步转动，壳体142进而带动第二传动轴12同步转动。
需要说明的是，第二传动轴12的第二端与壳体142固定连接的方式不限，例如，可以是焊接、螺钉连接、螺栓连接、一体成型等，在此不做限制。
一实施例中，壳体142具有同轴设置的第一开口142a和第二开口142b，第一传动轴11穿设于储液腔、第一开口142a和第二开口142b中，第一开口142a位于壳体142靠近底板组件10的一侧，第二传动轴12的第二端端部罩设于第一开口142a的周围，如此能够使得第二传动轴12与第一传动轴11以及壳体142同轴转动，使得动力驱动装置结构简单、紧凑。
一实施例中，请参阅图2，磁流变液离合器14还包括罩设于壳体142外侧的第二开口142b周围的套筒144，套筒144穿设于上述的避让口中，第一传动轴11穿设于套筒144中，壳体142通过套筒144安装于安装架16上。
一实施例中，请继续参阅图2，动力驱动装置包括套设于套筒144上的第一轴承151，第一轴承151设置于避让口的内壁和套筒144的外表面之间。第一轴承151能够减小第一传动轴11和套筒144之间的摩擦，且还能对第一传动轴151的转动起着定位导向作用。
一实施例中，请继续参阅图2，动力驱动装置包括套设在第二传动轴12外表面的第二轴承152，第二轴承152设置于第二传动轴12和底板组件 10之间。需要说明的是，第一轴承151和第二轴承152同轴设置，以共同对第一传动轴11和第二传动轴12起着定位导向作用。
一实施例中，磁流变液离合器14包括至少两个设置于储液腔内的密封轴承143，密封轴承143套设于第一传动轴11上，其中一个密封轴承143设置于第一开口142a处，以密封第一传动轴11与第一开口142a的内壁之间的间隙；其中另一个密封轴承143设置于第二开口142b处，以密封第一传动轴11与第二开口142b的内壁之间的间隙。
可以理解的是，上述的壳体142可以是一体成型结构，也可以是分体式结构并固定连接在一起。例如，本申请实施例中，请参阅图2，壳体142包括上壳体1421和下壳体1422，上壳体1421和下壳体1422为上、下分体的半壳体结构，上壳体1421与第二传动轴12一体成型，下壳体1422与套筒144一体成型。装配时，将上壳体1421和下壳体1422密封对接，再使用螺钉、螺栓等紧固件将上壳体1421和下壳体1422紧固连接在一起即可。
需要说明的是，一实施例中，动力驱动装置还包括套设在第一传动轴11上的多个滑动轴承17，可以在第一传动轴11的适当位置设置上述的滑动轴承17，例如，请参阅图2，在第一传动轴11的第一端的外表面和第二传动轴12的第一端的内表面之间设置至少一个滑动轴承17，在第一传动轴11的外表面和套筒144的内壁之间设置滑动轴承17等。由于滑动轴承17沿径向的尺寸较小，因此只需占用较小的安装空间，能够使得动力驱动装置的结构更加紧凑。
本申请实施例还提供上述任一种波轮洗衣机的控制方法，请参阅图3，控制方法包括如下步骤：
S1：获取脱水指令。
S2：控制磁流变液离合器14通电，如此，磁流变液离合器14中的磁流变液141的形态由液态转变为固态，磁流变液离合器14将第一传动轴11 与第二传动轴12驱动连接，以驱动波轮和内筒同步转动。
S3：在脱水过程结束后，控制磁流变液离合器14断电，以使得磁流变液离合器14中的磁流变液141的形态由固态转变为液态，磁流变液离合器14将第一传动轴11和第二传动轴12断开连接。
需要说明的是，在S3步骤结束之后，波轮洗衣机可以再次进入洗涤状态，或者，结束程序，波轮洗衣机关机。
需要说明的是，获取脱水指令，可以是对应单脱水模式或者洗涤模式中内嵌的脱水模式，再此不做限制。
本申请提供的各个实施例/实施方式在不产生矛盾的情况下可以相互组合。
以上所述仅为本申请的较佳实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (11)

  1. 一种波轮洗衣机的动力驱动装置，包括：
    底板组件，所述底板组件包括用于密封所述波轮洗衣机的盛水桶的第一侧以及背离所述盛水桶的第二侧；
    电机，所述电机设置于所述底板组件的第二侧，
    第一传动轴，所述第一传动轴的第一端用于与波轮洗衣机的波轮连接，所述第一传动轴的第二端与所述电机连接，所述第一传动轴的第一端和第二端同步转动；
    第二传动轴，所述第二传动轴的第一端用于与波轮洗衣机的内筒连接；
    磁流变液离合器，所述磁流变液离合器设置于所述底板组件的第二侧，所述磁流变液离合器内封装有磁流变液，所述第一传动轴穿过所述磁流变液；所述第二传动轴的第二端与所述第一传动轴通过所述磁流变液离合器在驱动连接和断开连接之间切换。
  2. 根据权利要求1所述的动力驱动装置，所述第二传动轴为空心轴，所述第二传动轴套接在所述第一传动轴外表面，所述第一传动轴和所述第二传动轴同轴设置。
  3. 根据权利要求1所述的动力驱动装置，所述第一传动轴位于所述磁流变液中的部分的表面形成有至少一个键槽；和/或，所述第一传动轴位于所述磁流变液中的部分的表面为毛糙表面。
  4. 根据权利要求1所述的动力驱动装置，所述动力驱动装置包括安装架，所述安装架连接于所述底板组件的第二侧，所述安装架具有容纳空间，所述磁流变液离合器设置于所述容纳空间内；所述电机设置于所述安装架背离所述底板组件的一侧，所述第一传动轴从所述容纳空间中穿过容纳空间。
  5. 根据权利要求4所述的动力驱动装置，所述磁流变液离合器包括壳体以及至少一对正电磁极和负电磁极，所述壳体具有用于存储所述磁流变液的储液腔，所述正电磁极和所述负电磁极设置于壳体外的相对两侧；所述第二传动轴的第二端与所述壳体固定连接。
  6. 根据权利要求5所述的动力驱动装置，所述壳体具有同轴设置的第一开口和第二开口，所述第一传动轴穿设于所述第一开口和所述第二开口中；所述第一开口位于所述壳体靠近所述底板组件的一侧，所述第二传动轴的第二端端部罩设于所述第一开口的周围。
  7. 根据权利要求6所述的动力驱动装置，所述磁流变液离合器还包括罩设于壳体外侧的所述第二开口周围的套筒；所述第一传动轴穿设于所述套筒中，所述安装架远离所述底板组件的一端设置有避让口，套筒穿设于所述避让口中，所述壳体通过所述套筒安装于所述安装架上。
  8. 根据权利要求7所述的动力驱动装置，所述动力驱动装置包括套设于所述套筒上的第一轴承，所述第一轴承设置于所述避让口的内壁和所述套筒的外表面之间。
  9. 根据权利要求6所述的动力驱动装置，所述磁流变液离合器包括至少两个设置于所述储液腔内的密封轴承，所述密封轴承套设于所述第一传动轴上，其中一个所述密封轴承设置于所述第一开口处以密封所述第一传动轴与所述第一开口的内壁之间的间隙；其中另一个所述密封轴承设置于所述第二开口处以密封所述第一传动轴与所述第二开口的内壁之间的间隙。
  10. 一种波轮洗衣机，包括：
    波轮；
    内筒，所述波轮转动设置于所述内筒的底部；
    盛水桶，所述内筒转动地设置于所述盛水桶内，所述盛水桶的底部设 置有安装孔；
    权利要求1-9任一项所述的动力驱动装置，所述第一传动轴和所述第二传动轴经所述安装孔伸入所述盛水桶内，所述底板组件密封所述安装孔，所述第一传动轴的第一端与所述波轮固定连接，所述第二传动轴的第一端与内筒固定连接；
    控制装置，所述控制装置与所述磁流变液离合器电连接。
  11. 一种如权利要求10所述的波轮洗衣机的控制方法，包括如下步骤：
    获取脱水指令；
    控制所述磁流变液离合器通电，所述磁流变液离合器将所述第一传动轴与所述第二传动轴驱动连接，以驱动所述波轮和所述内筒同步转动；
    在脱水过程结束后，控制所述磁流变液离合器断电，所述磁流变液离合器将所述第一传动轴和所述第二传动轴断开连接。
PCT/CN2020/109502 2020-04-28 2020-08-17 一种波轮洗衣机及其动力驱动装置、控制方法 WO2021217955A1 (zh)

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