WO2015172642A1 - 滚筒洗衣机 - Google Patents

滚筒洗衣机 Download PDF

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Publication number
WO2015172642A1
WO2015172642A1 PCT/CN2015/077581 CN2015077581W WO2015172642A1 WO 2015172642 A1 WO2015172642 A1 WO 2015172642A1 CN 2015077581 W CN2015077581 W CN 2015077581W WO 2015172642 A1 WO2015172642 A1 WO 2015172642A1
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WIPO (PCT)
Prior art keywords
casing
washing tub
wall
washing machine
photosensor
Prior art date
Application number
PCT/CN2015/077581
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English (en)
French (fr)
Inventor
吴刚
康菲
殷培杰
Original Assignee
无锡小天鹅股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN201410209601.3A external-priority patent/CN105088676B/zh
Priority claimed from CN201420252921.2U external-priority patent/CN203890723U/zh
Application filed by 无锡小天鹅股份有限公司 filed Critical 无锡小天鹅股份有限公司
Publication of WO2015172642A1 publication Critical patent/WO2015172642A1/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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/20—Parameters relating to constructional components, e.g. door sensors
    • 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
    • D06F23/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry 
    • D06F23/02—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry  and rotating or oscillating about a horizontal axis
    • 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 
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/24—Spin speed; Drum movements

Definitions

  • the invention relates to the field of laundry, and in particular to a drum washing machine.
  • the present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, it is an object of the present invention to provide a drum washing machine that monitors the weight change of the washing tub in real time.
  • a drum washing machine includes: a casing; a washing tub, the washing tub is rotatably disposed in the casing; a suspension spring, and two ends of the suspension spring are respectively associated with an inner wall of the casing An upper portion is connected to an outer wall of the washing tub; a photoelectric sensor, an upper end of the photosensor is connected to a top wall of the case or an upper portion of an inner wall of the case, and a lower end of the photoelectric sensor is opposite to the washing tub
  • the outer wall is connected, the photosensor being configured to output an electrical signal when the position of the washing tub changes, wherein the photosensor includes an elastic member; and a control device coupled to the photosensor to receive the The electrical signal transmitted by the photoelectric sensor.
  • the photoelectric sensor is configured to output an electric signal when the position of the washing tub changes, by connecting the photoelectric sensor between the tank and the washing tub, and the control device can judge the washing tub based on the electric signal
  • the weight changes so that the weight change of the washing tub can be monitored more accurately in real time to control the drum washing machine to operate more smoothly.
  • drum washing machine according to the above embodiment of the present invention may further have the following additional technical features:
  • the photosensor includes: an upper case and a lower case, the upper case and the lower case being connected by an elastic member such that the upper case and the The lower casings are movable relative to each other; the light emitting end and the light receiving end, the light emitting end and the light receiving end are disposed on one of the upper casing and the lower casing; a light reflecting surface, The light reflecting surface is disposed on the other of the upper case and the lower case to reflect light emitted from the light emitting end back to the light receiving end.
  • the structure of the photoelectric sensor is simple and can be accurately detected.
  • both ends of the elastic member respectively abut against the lower surface of the upper casing and the upper surface of the light reflecting surface on.
  • the elastic member is a spring.
  • the bottom end of the upper housing is open, the top end of the lower housing is open, and the upper housing outer cover is on the lower housing.
  • the photosensor further includes a photosensor wire coupled to the control device.
  • the drum washing machine further includes a damper, the two ends of the damper being respectively connected to an outer wall of the washing tub and a lower portion of an inner wall of the case.
  • the damper includes a friction rod and a damper cylinder, and the damper cylinder is slidable outside the friction rod and slidable relative to the friction rod, and one end of the damper barrel and the washing tub are The outer wall is connected, and one end of the friction rod is connected to the inner wall of the box.
  • FIG. 1 is a schematic view of a drum washing machine in accordance with an embodiment of the present invention
  • Figure 2 is an enlarged schematic view of a portion A of Figure 1;
  • FIG. 3 is a schematic diagram of a photosensor in accordance with an embodiment of the present invention.
  • Photoelectric sensor 4 light emitting end 41, light receiving end 42, elastic member 43, light reflecting surface 44, lower case 45, upper case 46,
  • the terms “installation”, “connected”, “connected”, “fixed” and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or integrated; can be mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements.
  • installation can be understood on a case-by-case basis.
  • a drum washing machine 1000 according to an embodiment of the present invention will be described below with reference to Figs.
  • a drum washing machine 1000 includes a case 1, a washing tub 2, a suspension spring 5, a photosensor 4, and a control device (not shown).
  • the front side of the cabinet 1 is provided with a storage opening (not shown) for holding and taking up the laundry.
  • the washing tub 2 is rotatably disposed in the casing 1 , and the washing tub 2 can swing in a small amount in the casing 1 , and the washing tub 2 contains laundry and water. When the weight of the laundry and the water changes, the washing tub The position of 2 will change.
  • Both ends of the suspension spring 5 are respectively connected to the upper portion of the inner wall of the casing 1 and the outer wall of the washing tub 2.
  • the suspension spring 5 has a buffering effect on the movement of the washing tub 2, that is, the suspension spring 5 functions as a shock absorber to ensure smooth running of the washing tub 2.
  • the suspension spring 5 functions as a shock absorber to ensure smooth running of the washing tub 2.
  • the lower portion of the casing 1 is further provided with a damper 3, and two ends of the damper 3 are respectively connected to the outer wall of the washing tub 2 and the inner wall of the casing 1, and the damper 3 is opposite to the washing tub 2
  • the movement has a cushioning effect, so that the suspension spring 5 cooperates with the damper 3 to buffer the movement of the washing tub 1, that is, the suspension spring 5 and the damper 3 together act as a shock absorber to further ensure the whole The machine runs smoothly.
  • the upper end of the photosensor 4 is connected to the top wall of the casing 1 or the upper portion of the inner wall of the casing 1, and the lower end of the photosensor 4 is connected to the outer wall of the washing tub 2, and the photoelectric sensor 4 is configured to change when the position of the washing tub 2 is changed.
  • An electrical signal is output, wherein the photosensor includes an elastic member.
  • the photosensor 4 comprises an elastic member, that is to say, the photosensor 4 is provided with an elastic member.
  • the control device is coupled to the photosensor 4 to receive an electrical signal from the photosensor 4.
  • the electrical signal may be voltage, current, frequency, PWM (pulse width), or the like.
  • photosensor 4 further includes a photosensor wire (not shown) that is coupled to the control device. Thereby, the photosensor 4 is connected to the control device.
  • other structures such as a drive motor are also provided in the casing 1.
  • the washing principle of the drum washing machine 1000 and the like are well known to those skilled in the art and will not be described in detail herein.
  • the washing tub 2 moves, for example, when the weight of the laundry and the water in the washing tub 2 increases, the washing tub 2 sinks, and at this time, the bottom wall of the washing tub 2 and the box The distance between the inner bottom walls of the body 2 becomes small.
  • the suspension spring 5 acts as a buffer for the movement of the washing tub 2
  • the movement of the washing tub 2 directly acts on the suspension spring 5, and at the same time, since the photosensor 4 is connected between the casing 1 and the washing tub 2, the washing tub
  • the photosensor 4 since the photosensor 4 is connected between the casing 1 and the washing tub 2, the washing tub
  • the motion of 2 also acts directly on the photosensor 4, so the photosensor 4 can output an electrical signal according to the position change of the washing tub 2 in real time, the electric signal can accurately reflect the weight change of the washing tub 2, and the control device receives the photosensor 4
  • the electrical signal is judged whether or not the weight of the washing tub 2 has changed.
  • the control device can perform functions such as accurate weighing of the laundry on the drum washing machine 1000 in accordance with the received electric signal.
  • control device can perform the following determination according to the electrical signal output by the photoelectric sensor 4: after the washing is completed, when the drain valve is opened, as the water in the washing tub 2 is discharged, the weight of the washing tub 2 is reduced, and the washing tub 2 moves upward due to drainage.
  • the valve drainage flow rate does not change much, and the value output by the photoelectric sensor 4 is also a downward linear curve; when the water in the washing tub 2 is drained, the weight of the washing tub 2 does not change, and the position of the washing tub 2 does not change at this time.
  • the photosensor 4 outputs a straight line close to the horizontal.
  • the dehydration action can be started immediately.
  • This method of judging is more accurate than the existing water level photoelectric sensor judging method.
  • the water in the washing tub 2 can be immediately sensed after being discharged, and dehydration can be started immediately, which can reduce the washing time.
  • the control device can also judge other operations of the washing tub 2 according to the collected weight change of the washing tub 2, which will not be described in detail herein.
  • the photoelectric sensor 4 is configured to output an electric signal when the position of the washing tub 2 changes, and the control device can be The electric signal judges the change in the weight of the washing tub 2, so that the weight change of the washing tub 2 can be monitored more accurately in real time to control the drum washing machine 1000 to operate more smoothly.
  • a drum washing machine 1000 according to an embodiment of the present invention will now be described with reference to Figs.
  • the drum washing machine 1000 includes a cabinet 1, a washing tub 2, a damper 3, a photoelectric sensor 4, a suspension spring 5, and a control device.
  • the case 1 includes a body 10 and an upper cover 11 with the top of the body 10 open, and the upper cover 11 cooperates with the top of the body 10 to define a space for holding the washing tub 2 with the body 10.
  • the receiving opening is provided on the front side of the body 10.
  • the body 10 is further provided with a cover plate (not shown) for opening or closing the receiving opening.
  • a foot 6 is provided at each corner of the bottom wall of the body 10.
  • the washing tub 2 includes a tub (not shown) and a dewatering tub (not shown), and the dewatering tub is rotatably provided in the tub.
  • the water tub is connected to the inner wall of the casing 1 through the suspension spring 5 and the damper 3.
  • the two ends of the suspension spring 5 are respectively connected with the upper portion of the inner wall of the casing 1 and the outer wall of the tub, and the two ends of the damper 3 are respectively
  • the bottom wall of the box body 1 is connected to the outer wall of the water tub, and the suspension spring 5 and the damper 3 respectively have a certain buffer absorption effect on the movement energy of the washing tub 2, which can ensure the smooth running of the whole machine.
  • the damper 3 includes a friction rod 30 and a damper cylinder 31, and the damper cylinder 31 is jacketed outside the friction rod 30 and opposite to the friction rod 30. It is slidable, and one end of the damper cylinder 31 is connected to the outer wall of the washing tub 2, and one end of the friction rod 30 is connected to the inner wall of the casing 1. Specifically, when the weight of the washing tub 2 changes and moves, the damper cylinder 31 can slide on the friction lever 30 to act as a buffer for the movement of the washing tub 2 under the action of the washing tub 2.
  • the photosensor 4 includes an upper casing 46, a lower casing 45, a light emitting end 41, a light receiving end 42, and a light reflecting surface 44, wherein the bottom end of the upper casing 46 is open, and the top end of the lower casing 45 is open, the upper casing
  • the body 46 is housed on the lower housing 45.
  • the upper housing 46 and the lower housing 45 are connected by a spring 43 such that the upper housing 46 and the lower housing 45 can move up and down relatively, that is, the upper housing 46 can move up and down relative to the lower housing 45.
  • the lower housing 45 is movable up and down relative to the upper housing 46.
  • the upper casing 46 is connected to the casing 1, and the lower casing 45 is connected to the washing tub 2, and the upper casing 46 is movable relative to the lower casing 45 when the weight of the washing tub 2 is changed.
  • the top wall of the upper casing 46 is connected to the casing 1 through a first connecting member 7, and the first connecting member 7 is formed as a cylindrical member.
  • the bottom wall of the lower casing 45 is connected to the washing tub 2 by a second connecting member 8, and the second connecting member 8 is formed as a cylindrical member.
  • the first connecting member 7 and the case 1 and the second connecting member 8 and the washing tub 2 may be connected by a spherical joint.
  • the spring 43 is a linear spring having a spring constant. Both ends of the spring 43 are respectively abutted against the lower surface of the upper casing 46 and the upper surface of the light reflecting surface 44.
  • the upper casing 46 and the lower casing 45 may be connected by other elastic members, and the elastic members may also be connected to the upper casing 46 and the lower casing 45 by other means, the upper casing 46 and The shape of the lower case 45, the fitting relationship between the upper case 46 and the lower case 45 are not limited thereto as long as the upper case 46 and the lower case 45 are relatively movable.
  • the light emitting end 41 and the light receiving end 42 are provided on the upper casing 46.
  • the light reflecting surface 44 is provided on the lower casing 45 to reflect the light emitted from the light emitting end 41 back to the light receiving end 42. It is of course understood that the light emitting end 41 and the light receiving end 42 may also be disposed on the lower casing 45, and the light reflecting surface 44 is disposed on the upper casing 46 to reflect light, that is, the light emitting end 41 and the light receiving end 42.
  • a light reflecting surface 44 is provided on the other of the upper casing 46 and the lower casing 45 to reflect the light emitted from the light emitting end 41 back to the light receiving end. 42.
  • the photoelectric sensor 4 is further provided with a control component such as a control panel connected to the light receiving end 42 , and the control component can convert the optical signal received from the light receiving end 42 into an electrical signal, the electrical signal and the light reflecting surface.
  • a control component such as a control panel connected to the light receiving end 42 , and the control component can convert the optical signal received from the light receiving end 42 into an electrical signal, the electrical signal and the light reflecting surface.
  • the distance d between the 44 and the light emitting end 41 (light receiving end 42) is in a corresponding relationship, preferably a linear correspondence.
  • the light emitted from the light emitting end 41 is reflected back to the light receiving end 42 by the light reflecting surface 44.
  • the weight of the clothes and water in the drum washing machine 1000 changes, and the suspension spring 5 is pulled.
  • the amount of extension changes, the deformation of the spring 43 changes at the same time, the upper casing 46 moves relative to the lower casing 45, and the distance d between the light reflecting surface 44 and the light emitting end 41 and the light receiving end 42 changes, that is, the light reflecting surface
  • the optical signal reflected to the light receiving end 42 changes, so that the electrical signal transmitted from the photosensor 4 changes, so that the electrical signal can accurately reflect the weight change of the drum washing machine 1000.
  • the weight of the laundry and the water in the washing machine is increased, the weight of the washing tub 2 is increased, the washing tub 2 is sunk, and the amount of stretching of the suspension spring 5 is increased, so that the shape variable of the spring 43 in the photosensor 4 is increased.
  • the increase in the shape variable of the spring 43 causes the distance d between the light reflecting surface 44 and the light emitting end 41 and the light receiving end 42 to become large.
  • the drum washing machine 1000 according to an embodiment of the present invention has the following advantages:
  • control device can instantly sense the weight of the washing tub 2, and instantly determine whether the working state of the drum washing machine 1000 is normal;
  • the dehydration imbalance can be more accurately perceived (for example, a photoelectric sensor 4 is provided beside each suspension spring 5 to detect the position change of different parts of the washing tub 2), and the control device can adjust according to the sensed value;
  • the first feature "on” or “under” the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact.
  • the first feature "above”, “above” and “above” the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

Abstract

一种滚筒洗衣机，包括：箱体、洗涤桶、悬挂弹簧、光电传感器和控制装置。洗涤桶可转动地设在箱体内。悬挂弹簧的两端分别与箱体的内壁的上部和洗涤桶的外壁相连。光电传感器的上端与箱体的顶壁或箱体的内壁的上部相连，光电传感器的下端与洗涤桶的外壁相连，光电传感器被构造成在洗涤桶的位置发生变化时输出电信号。控制装置与光电传感器相连以接收光电传感器传出的电信号。

Description

滚筒洗衣机 技术领域
本发明涉及洗衣领域，尤其是涉及一种滚筒洗衣机。
背景技术
滚筒洗衣机在使用的过程中，不同的进水量和不同的洗衣量均会造成滚筒洗衣机的重量的不同，同时滚筒洗衣机在洗涤过程中，在漂洗阶段和脱水甩干阶段，滚筒洗衣机的重量也会发生变化，相关技术中的滚筒洗衣机均未能够对滚筒洗衣机的重量进行实时的检测，从而无法根据滚筒洗衣机的重量变化情况控制和判断滚筒洗衣机的运行过程。
发明内容
本发明旨在至少在一定程度上解决相关技术中的技术问题之一。为此，本发明的一个目的在于提出一种滚筒洗衣机，实时监测洗涤桶的重量变化。
根据本发明实施例的滚筒洗衣机，包括：箱体；洗涤桶，所述洗涤桶可转动地设在所述箱体内；悬挂弹簧，所述悬挂弹簧的两端分别与所述箱体的内壁的上部和所述洗涤桶的外壁相连；光电传感器，所述光电传感器的上端与所述箱体的顶壁或所述箱体的内壁的上部相连，所述光电传感器的下端与所述洗涤桶的外壁相连，所述光电传感器被构造成在所述洗涤桶的位置发生变化时输出电信号，其中，所述光电传感器包括弹性件；控制装置，所述控制装置与所述光电传感器相连以接收所述光电传感器传出的电信号。
根据本发明实施例的滚筒洗衣机，通过将光电传感器连接在箱体和洗涤桶之间，光电传感器被构造成在洗涤桶的位置发生变化时输出电信号，控制装置可以根据电信号判断洗涤桶的重量变化，从而可以更精确地实时监测洗涤桶的重量变化，以控制滚筒洗衣机更平稳地运行。
另外，根据本发明上述实施例的滚筒洗衣机还可以具有如下附加的技术特征：
在本发明的一些实施例中，所述光电传感器包括：上壳体和下壳体，所述上壳体和所述下壳体之间通过弹性件相连以使得所述上壳体和所述下壳体之间可相对上下移动；光发射端和光接收端，所述光发射端和所述光接收端设在所述上壳体和所述下壳体的其中一个上；光反射面，所述光反射面设在所述上壳体和所述下壳体的另一个上以将从所述光发射端发出的光线反射回所述光接收端。从而使得光电传感器的结构简单，且可精确检测。
具体地，所述弹性件的两端分别止抵在所述上壳体的下表面和所述光反射面的上表面 上。
优选地，所述弹性件为弹簧。
在本发明的一些示例中，所述上壳体的底端敞开，所述下壳体的顶端敞开，所述上壳体外罩在所述下壳体上。从而使得光电传感器的结构简单。
在本发明的一些实施例中，所述光电传感器还包括与所述控制装置相连的光电传感器导线。
根据本发明的一些实施例，滚筒洗衣机还包括减震器，所述减震器的两端分别与所述洗涤桶的外壁和所述箱体的内壁的下部相连。
具体地，所述减震器包括摩擦杆和减震筒，所述减震筒外套在所述摩擦杆外且相对所述摩擦杆可滑动，所述减震筒的一端与所述洗涤桶的外壁相连，所述摩擦杆的一端与所述箱体的内壁相连。
附图说明
图1为根据本发明实施例的滚筒洗衣机的示意图；
图2为图1中A部分的放大示意图；
图3为根据本发明实施例的光电传感器的示意图。
附图标记：
滚筒洗衣机1000、
箱体1、本体10、上盖11、
洗涤桶2、
减震器3、摩擦杆30、减震筒31、
光电传感器4、光发射端41、光接收端42、弹性件43、光反射面44、下壳体45、上壳体46、
悬挂弹簧5、
底脚6、
第一连接件7、第二连接件8
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，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发明的限制。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
下面参考图1-图3描述根据本发明实施例的滚筒洗衣机1000。
如图1所示，根据本发明实施例的滚筒洗衣机1000包括：箱体1、洗涤桶2、悬挂弹簧5、光电传感器4和控制装置(图未示出)。箱体1的前侧设有用于盛放和拿取衣物的盛放口(图未示出)。洗涤桶2可转动地设在箱体1内，且洗涤桶2可在箱体1内小幅度摆动，洗涤桶2内盛放有衣物和水，当衣物和水的重量发生变化时，洗涤桶2的位置会发生变化。
悬挂弹簧5的两端分别与箱体1的内壁的上部和洗涤桶2的外壁相连。悬挂弹簧5对洗涤桶2的运动具有缓冲作用，即悬挂弹簧5起到减震的作用，以保证洗涤桶2可以平稳运行。在图1的示例中，箱体1的下部还设有减震器3，减震器3的两端分别与洗涤桶2的外壁和箱体1的内壁相连，减震器3对洗涤桶2的运动具有缓冲作用，从而悬挂弹簧5与减震器3共同作用以对洗涤桶1的运动起到缓冲作用，即悬挂弹簧5和减震器3共同起到减震的作用，以进一步保证整机平稳运行。
光电传感器4的上端与箱体1的顶壁或箱体1的内壁的上部相连，光电传感器4的下端与洗涤桶2的外壁相连，光电传感器4被构造成在洗涤桶2的位置发生变化时输出电信号，其中，所述光电传感器包括弹性件。这里需要注意的是，光电传感器4包括弹性件，也就是说，光电传感器4自带有弹性件。
控制装置与光电传感器4相连以接收光电传感器4传出的电信号。具体地，电信号可以是电压、电流、频率、PWM(脉冲宽度)等。在发明的一些示例中，光电传感器4还包括与控制装置相连的光电传感器导线(图未示出)。从而便于光电传感器4与控制装置相连。需要进行说明的是，箱体1内还设有驱动电机等其他结构，滚筒洗衣机1000的洗衣原理等均为本领域的技术人员所熟知，这里就不详细描述。
具体而言，洗涤桶2的重量发生变化时，洗涤桶2运动，例如当洗涤桶2内的衣物和水的重量增加时，洗涤桶2会下沉，此时洗涤桶2的底壁与箱体2的内底壁之间的距离变 小。由于悬挂弹簧5对洗涤桶2的运动起到缓冲的作用，因此洗涤桶2的运动会直接作用到悬挂弹簧5上，同时由于光电传感器4连接在箱体1和洗涤桶2之间，因此洗涤桶2的运动也会直接作用到光电传感器4上，因此光电传感器4可以实时根据洗涤桶2的位置变化输出电信号，电信号可以准确地反应洗涤桶2的重量变化，控制装置接收光电传感器4传出的电信号判断洗涤桶2的重量是否发生变化。例如具体地，控制装置可以根据接收的电信号在滚筒洗衣机1000上实现衣物的精准称重等功能。
再例如控制装置可以根据光电传感器4输出的电信号进行如下判断：洗涤完成之后，排水阀打开时，随着洗涤桶2内水排出，洗涤桶2重量减轻，洗涤桶2会向上运动，由于排水阀排水流速变化不大，光电传感器4输出的值也为向下的线性曲线；当洗涤桶2内水排完之后，洗涤桶2重量不再变化，此时洗涤桶2的位置不再发生变化，光电传感器4输出为接近水平的直线。当控制器采集到的数据值不再发生变化或变化很小时，即判断滚筒洗衣机排水完成，即可立即开始进行脱水动作。用这种判断方法比现有的水位光电传感器判断方法更准确，洗涤桶2内水排完立刻就能感知到，即刻就能开始脱水，可以减少洗涤时间。当然值得理解的是，控制装置还可以根据采集到的洗涤桶2的重量变化判断洗涤桶2的其他运行，这里就不详细描述。
根据本发明实施例的滚筒洗衣机1000，通过将光电传感器4连接在箱体1和洗涤桶2之间，光电传感器4被构造成在洗涤桶2的位置发生变化时输出电信号，控制装置可以根据电信号判断洗涤桶2的重量变化，从而可以更精确地实时监测洗涤桶2的重量变化，以控制滚筒洗衣机1000更平稳地运行。
下面参考图1-图3描述根据本发明具体实施例的滚筒洗衣机1000。
如图1所示，滚筒洗衣机1000包括箱体1、洗涤桶2、减震器3、光电传感器4、悬挂弹簧5和控制装置。
箱体1包括本体10和上盖11，本体10的顶部敞开，上盖11与本体10的顶部配合以与本体10之间限定出用于盛放洗涤桶2的空间。盛放口设在本体10的前侧，本体10上还设有用于打开或关闭盛放口的盖板(图未示出)。本体10的底壁的每个拐角处均设有底脚6。
洗涤桶2包括盛水桶(图未示出)和脱水桶(图未示出)，脱水桶可转动地设在盛水桶内。盛水桶通过悬挂弹簧5和减震器3与箱体1的内壁相连，悬挂弹簧5的两端分别与箱体1的内壁的上部和盛水桶的外壁相连，减震器3的两端分别与箱体1的底壁和盛水桶的外壁相连，悬挂弹簧5和减震器3分别对洗涤桶2的运动的能量有一定的缓冲吸收作用，可以保证整机平稳运行。
减震器3包括摩擦杆30和减震筒31，减震筒31外套在摩擦杆30外且相对摩擦杆30 可滑动，减震筒31的一端与洗涤桶2的外壁相连，摩擦杆30的一端与箱体1的内壁相连。具体而言，当洗涤桶2的重量发生变化而运动时，在洗涤桶2的作用下，减震筒31可以在摩擦杆30上滑动而对洗涤桶2的运动起到缓冲的作用。
光电传感器4包括：上壳体46、下壳体45、光发射端41、光接收端42和光反射面44，其中，上壳体46的底端敞开，下壳体45的顶端敞开，上壳体46外罩在下壳体45上。
上壳体46和下壳体45之间通过弹簧43相连以使得上壳体46和下壳体45之间可相对上下移动，也就是说，上壳体46可相对下壳体45上下移动，下壳体45可相对上壳体46上下移动。上壳体46与箱体1相连，下壳体45与洗涤桶2相连，当洗涤桶2的重量发生变化而运动时，上壳体46可以相对下壳体45移动。
如图1和图2所示，上壳体46的顶壁通过第一连接件7与箱体1相连，第一连接件7形成为圆筒件。下壳体45的底壁通过第二连接件8与洗涤桶2相连，第二连接件8形成为圆筒件。第一连接件7与箱体1之间、第二连接件8和洗涤桶2之间可以采用球面铰接的方式相连。
弹簧43为具有弹性系数的线性弹簧。弹簧43的两端分别止抵在上壳体46的下表面和光反射面44的上表面上。其中值得理解的是，上壳体46和下壳体45之间还可以是通过其他弹性件相连，弹性件也可以通过其他方式与上壳体46和下壳体45相连，上壳体46和下壳体45的形状、上壳体46和下壳体45之间的配合关系不限于此，只要使得上壳体46和下壳体45之间可相对移动即可。
光发射端41和光接收端42设在上壳体46上。光反射面44设在下壳体45上以将从光发射端41发出的光线反射回光接收端42。当然值得理解的是，光发射端41和光接收端42还可以设在下壳体45上，光反射面44设在上壳体46上以反射光线，也就是说，光发射端41和光接收端42设在上壳体46和下壳体45的其中一个上，光反射面44设在上壳体46和下壳体45的另一个上以将从光发射端41发出的光线反射回光接收端42。值得理解的是，光电传感器4内还设有与光接收端42相连的控制面板等控制元件，控制元件可将从光接收端42接收的光信号转化为电信号，该电信号与光反射面44和光发射端41(光接收端42)之间的距离d成对应关系，优选为线性对应关系。
具体而言，光发射端41发出的光线被光反射面44反射回光接收端42内，当滚筒洗衣机1000内衣服和水的重量改变时，洗涤桶2的重量发生变化，悬挂弹簧5的拉伸量变化，弹簧43的形变量同时发生变化，上壳体46相对下壳体45移动，光反射面44与光发射端41和光接收端42之间的距离d发生变化，即被光反射面44反射到光接收端42的光信号发生变化，从而使得从光电传感器4传输出的电信号发生变化，使得电信号可以准确地反应滚筒洗衣机1000整机重量变化。
例如当洗衣机内衣物和水的重量增加时，洗涤桶2的重量增加，洗涤桶2下沉，悬挂弹簧5的拉伸量增加，带动光电传感器4内的弹簧43的形变量随之增加。弹簧43的形变量增加导致光反射面44与光发射端41及光接收端42之间的距离d变大。
根据本发明实施例的滚筒洗衣机1000具有以下几个优点：
1.通过设置光电传感器4，控制装置可以即时感测洗涤桶2的重量，即时判断滚筒洗衣机1000工作状态是否正常；
2.可以直接感知排水完成，立即开始排水，节省整个洗涤过程的时间；
3.可以更精准感知脱水不平衡(例如在每个悬挂弹簧5旁边上均设有一个光电传感器4以检测洗涤桶2不同部位的位置变化)，控制装置可根据感测的数值进行调整；
4.可以感测衣物的重量，实现不同衣量进不同水量；
5.可以感知衣物脱水含水率，实现衣物含水率达到要求即停止脱水，比现有的固定时间脱水更智能，更可以保证脱水完成之后衣物含水率达到用户要求。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (8)

  1. 一种滚筒洗衣机，其特征在于，包括：
    箱体；
    洗涤桶，所述洗涤桶可转动地设在所述箱体内；
    悬挂弹簧，所述悬挂弹簧的两端分别与所述箱体的内壁的上部和所述洗涤桶的外壁相连；
    光电传感器，所述光电传感器的上端与所述箱体的顶壁或所述箱体的内壁的上部相连，所述光电传感器的下端与所述洗涤桶的外壁相连，所述光电传感器被构造成在所述洗涤桶的位置发生变化时输出电信号，其中，所述光电传感器包括弹性件；
    控制装置，所述控制装置与所述光电传感器相连以接收所述光电传感器传出的电信号。
  2. 根据权利要求1所述的滚筒洗衣机，其特征在于，所述光电传感器包括：
    上壳体和下壳体，所述上壳体和所述下壳体之间通过弹性件相连以使得所述上壳体和所述下壳体之间可相对上下移动；
    光发射端和光接收端，所述光发射端和所述光接收端设在所述上壳体和所述下壳体的其中一个上；
    光反射面，所述光反射面设在所述上壳体和所述下壳体的另一个上以将从所述光发射端发出的光线反射回所述光接收端。
  3. 根据权利要求2所述的滚筒洗衣机，其特征在于，所述弹性件的两端分别止抵在所述上壳体的下表面和所述光反射面的上表面上。
  4. 根据权利要求2所述的滚筒洗衣机，其特征在于，所述弹性件为弹簧。
  5. 根据权利要求2所述的滚筒洗衣机，其特征在于，所述上壳体的底端敞开，所述下壳体的顶端敞开，所述上壳体外罩在所述下壳体上。
  6. 根据权利要求1所述的滚筒洗衣机，其特征在于，所述光电传感器还包括与所述控制装置相连的光电传感器导线。
  7. 根据权利要求1所述的滚筒洗衣机，其特征在于，还包括减震器，所述减震器的两端分别与所述洗涤桶的外壁和所述箱体的内壁的下部相连。
  8. 根据权利要求7所述的滚筒洗衣机，其特征在于，所述减震器包括摩擦杆和减震筒，所述减震筒外套在所述摩擦杆外且相对所述摩擦杆可滑动，所述减震筒的一端与所述洗涤桶的外壁相连，所述摩擦杆的一端与所述箱体的内壁相连。
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