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WO2019196789A1 - 新型水位传感器及洗衣机 - Google Patents

新型水位传感器及洗衣机 Download PDF

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Publication number
WO2019196789A1
WO2019196789A1 PCT/CN2019/081734 CN2019081734W WO2019196789A1 WO 2019196789 A1 WO2019196789 A1 WO 2019196789A1 CN 2019081734 W CN2019081734 W CN 2019081734W WO 2019196789 A1 WO2019196789 A1 WO 2019196789A1
Authority
WO
WIPO (PCT)
Prior art keywords
water level
level sensor
washing machine
casing
terminal
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2019/081734
Other languages
English (en)
French (fr)
Inventor
陈瑜
薛凯
高秋英
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Washing Machine Co Ltd
Original Assignee
Qingdao Haier Washing Machine Co Ltd
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.)
Filing date
Publication date
Application filed by Qingdao Haier Washing Machine Co Ltd filed Critical Qingdao Haier Washing Machine Co Ltd
Publication of WO2019196789A1 publication Critical patent/WO2019196789A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • D06F33/42—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of draining
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/087—Water level measuring or regulating devices
    • 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
    • D06F2103/18—Washing liquid level

Definitions

  • the coil and the casing will be dew condensation, and the surface will form water droplets, which will cause the water level sensor to form a capacitive effect.
  • the two terminals of the water level sensor will have a short circuit fault, which will affect the output frequency.
  • the connector terminal is affected by the humid environment to produce a patina phenomenon, which is in poor contact with the terminal of the water level sensor, so that the washing machine has an empty barrel washing or dehydration with water.
  • the upper and lower ends of the baffle extend vertically in the axial direction, the top end of the baffle is higher than the top end of the terminal, and the bottom end of the baffle extends to the base of the casing.
  • the top end of the casing is provided with an opening, and the adjusting screw is inserted into the casing through the opening of the top end of the casing to block the opening of the top end, and the adjusting screw is provided with a downwardly extending connecting portion on the outer circumference of the plate, and the outer wall of the casing is provided There is a corresponding groove for the connecting portion to make the connecting portion and the outer wall of the casing form a smooth curved surface; a part of the protective cover is connected with the outer wall of the casing, and the other part is connected with the connecting portion of the adjusting screw by the plate; fixed.
  • a middle portion of the protective cover is a horizontally disposed fixing portion, and two ends of the fixing portion are respectively connected with an extending portion extending vertically downward, and one side of the fixing portion is connected with the outer wall of the casing and the connecting portion of the adjusting screw by the plate. Tightly fitting the connection and extending the other side horizontally outward.
  • the present invention has the following advantageous effects compared with the prior art.
  • baffles By arranging the baffles on the casing at the intermediate positions of the adjacent terminals to separate the adjacent terminals, thereby ensuring mutual insulation between the adjacent terminals and avoiding short-circuiting of the terminals caused by condensation of the casing.
  • the condensation formed around the terminal or on the terminal flows along the drain groove to the base of the housing to achieve the purpose of preventing the terminal from moisture.
  • FIG. 1 is a schematic structural view of a water level sensor according to an embodiment of the present invention.
  • Figure 2 is a front elevational view of the water level sensor in the embodiment of the present invention.
  • Figure 3 is a cross-sectional view taken along line A-A of Figure 2;
  • Figure 5 is a schematic view of a water level detecting device in an embodiment of the present invention.
  • Fig. 6 is a flow chart showing a control method of the washing machine in the embodiment of the present invention.
  • a new water level sensor 100 is introduced in the embodiment of the present invention, including a casing 1, a gas cover 2, an adjusting screw receiving plate 3, and a chamber enclosed by the casing 1 and the gas cover 2.
  • a rubber diaphragm 4 the rubber diaphragm 4 divides the chamber into two upper and lower chambers, the lower chamber is an air intake cavity, and the air inlet cavity is connected with the air inlet nozzle 11 provided on the gas cover 2;
  • the coil unit comprises a coil shaft 5, an inductor coil 7 and at least two terminals 6;
  • the housing 1 is provided with a plug connector 101, and the terminal 6 extends from the plug connector 101 of the housing 1, and is fixed to the housing
  • the outer wall of the housing 1 is provided with a baffle 102 at a position intermediate the adjacent terminals 6 to separate the adjacent terminals 6 to ensure mutual insulation between the adjacent terminals 6, thereby avoiding the housing 1
  • the terminal 6 caused by condensation is short-circuited.
  • a washing machine is further provided, which is equipped with a novel water level sensor 100 as described above, the washing machine comprises an inner barrel and an outer barrel, the outer barrel of the washing machine is connected with the air chamber, and the air level sensor 100 is air-conditioned.
  • the cavity communicates with the air chamber of the washing machine through the air inlet 11 to connect the outer tub of the washing machine with the water level sensor 100; the water is the sensor 100 detects the water level inside the washing machine via the air chamber, the terminal 6 of the water level sensor 100 and the washing machine
  • the control circuit is connected to cause the water level sensor 100 to feed back a change signal to the computer board of the washing machine, and the washing machine computer board adjusts the water level of the washing machine according to the change signal, thereby achieving precise control of the water level.
  • the gas cap 2 and the bottom of the casing 1 are fixedly connected by the riveting ring 10, the chamber surrounded by the gas cap 2 and the casing 1 is provided with a rubber diaphragm 4, and one side of the rubber diaphragm 4 is connected to the air inlet.
  • the cavity, the other side of the diaphragm is connected to the cylindrical magnetic core 9;
  • the upper chamber is also provided with a coil unit, and the coil unit is located above the magnetic core 9.
  • the coil unit includes a coil shaft 5, an inductor coil 7 and at least two terminals 6.
  • the coil shaft 5 is coaxially disposed with the magnetic core 9.
  • the inductor coil 7 is wound on the coil shaft 5, and the two ends of the inductor coil 7 are connected to the two terminals 6.
  • the air pressure acts on the rubber diaphragm 4 through the air inlet cavity, thereby pushing the rubber diaphragm 4 up and down, the rubber diaphragm 4 acts to drive the magnetic core 9 to move up and down, and when the magnetic core 9 moves, the electromagnetic wire of the inductor 7 is cut, thereby driving the inductor coil 7
  • the inductance changes, and the change of inductance is fed back to the washing machine computer board through the terminal 6.
  • the washing machine computer board determines whether the water level of the washing machine reaches the required position according to the signal of the inductance.
  • the upper end of the housing 1 is connected to the adjusting screw by the plate 3.
  • the adjusting screw is provided with an adjusting hole 303 for mounting the adjusting screw on the top of the adjusting plate.
  • the adjusting screw is placed in the coil shaft 5 through the adjusting hole 303, and the adjusting screw is in the adjusting hole 303.
  • the position inside can change the amount of electromagnetic force for precise adjustment.
  • the coil shaft 5 is a hollow cylindrical structure, and the upper and lower ends of the coil shaft 5 are provided with protrusions to support the extension of the inductor 7 and the stable support inductor 7 and the coil shaft 5
  • An insert block protruding toward the plug connector 101 is further provided, and a slot corresponding to the plug terminal 6 is provided on the plug block.
  • the terminal 6 is inserted into the slot from the inside to the outside, and a bent limit hook is provided at the rear end of the terminal 6. By inserting the terminal 6 from the inside to the outside, the rear end of the terminal 6 is received by the plate 3 and the baffle 102 via the adjusting screw 8.
  • the terminal 6 is not easy to move under the force of the force, so that the wire is not easily broken when the terminal 6 is strongly drawn externally. happening.
  • a novel water level sensor 100 which comprises a casing 1, a gas cover 2, an adjusting screw receiving plate 3, and a chamber enclosed by the casing 1 and the gas cap 2; a coil unit comprising a coil shaft 5, an inductor coil 7 and at least two terminals 6; the housing 1 is provided with a plug connector 101, and the terminal 6 extends from the plug connector 101 of the housing 1, and is fixed to the housing 1
  • the outer wall of the casing 1 is provided with a baffle 102 at an intermediate position of the adjacent terminals 6 to separate the adjacent terminals 6 to ensure mutual insulation between the adjacent terminals 6 and avoid condensation of the casing 1. The resulting terminal 6 is shorted.
  • the plug connectors 101 are disposed adjacent to each other in the same height, and the terminals 6 extend out of the housing 1 through the corresponding plug-in interface 101 from the inside of the housing 1 and are symmetric with respect to the water level sensor 100, and the baffle 102 is vertical.
  • Straight disposed at an intermediate position of the adjacent plug connector 101 and perpendicular to the tangent of the outer wall of the housing 1 to separate the two terminals 6.
  • the housing 1 includes a convex portion 104 extending upwardly in a cylindrical shape and a radially extending base 105.
  • the convex portion 104 and the base 105 are hollow inside to form a cavity for mounting the coil unit, and the base 105 is located
  • the bottom of the raised portion 104 is coupled to the air cover 2; the same side of the raised portion 104 is provided with two plug connectors 101, and the terminal 6 extends from the corresponding plug connector 101 to the outside of the housing and is fixed to the boss portion.
  • the outer wall of the boss portion 104 is provided with a baffle 102 at a position intermediate the plug connector 101.
  • One side of the baffle 102 is in a fixed connection with the outer wall of the boss portion 104, and the other side extends outward.
  • the upper and lower ends of the baffle 102 extend vertically in the axial direction, the top end of the baffle 102 is higher than the top end of the terminal 6, and the bottom end of the baffle 102 extends to the base 105 of the casing 1.
  • a part of the shield 302 is connected to the outer wall of the casing 1, and the other portion is connected to the connecting portion 301 of the adjusting screw by the plate 3.
  • the connection is fixed, and the shield 302 and the adjustment screw are integrally or separately arranged by the plate 3.
  • the middle portion of the shield 302 is a horizontally disposed fixing portion 3021.
  • the two ends of the fixing portion 3021 are respectively connected to the vertically extending extending portion 3022, one side of the fixing portion 3021 and the outer wall of the housing 1 are adjusted.
  • the screws are closely attached to the connecting portion 301 of the plate 3, and the other side extends horizontally outward.
  • the bottom end of the fixing portion 3021 is connected to the top end of the shutter 102.
  • the bottom end of the extension portion 3022 is not higher than the bottom end of the terminal 6.
  • the condensation formed above the terminal 6 gathers to the upper end of the fixing portion 3021. When the condensation gathers to a certain amount, the condensation falls along the extension portion 3022 onto the base 105 of the casing 1 under the action of gravity.
  • the housing 1 is provided with a drain groove 103 located below the terminal 6.
  • the top of the drain groove 103 communicates with the plug connector 101, and the bottom portion extends vertically to the base 105 of the housing 1.
  • a control method of the washing machine is also described.
  • the voltage difference between the terminals of the water level sensor applied to the water level detecting device of the washing machine as described above is detected in real time.
  • the normal operation of the water level sensor can be ensured, and the water level sensor can be prevented from performing normal water level detection due to the failure of the humid environment, thereby further avoiding the empty barrel washing or the belt of the washing machine.
  • a washing machine which comprises the water level detecting device applied to the washing machine and the control computer board, and the water level sensor 100 of the water level detecting device is connected with the air chamber of the washing machine.
  • the water level inside the washing machine is measured through the air chamber; the water level sensor 100 is connected to the water level detecting device through the two terminals thereof, and the water level detecting device is connected with the control computer board to feed back the water level of the washing machine detected by the water level sensor 100 to the control computer.
  • a washing machine and the washing machine adopts a control method of a washing machine as described above.
  • the pull-up resistor 14 fails at this time, corresponding to the first terminal 13 of the water level sensor 100 being directly grounded across the pull-up resistor 14, at which point the first terminal 12 of the water level sensor 100 and the first The terminal 13 is grounded at the same time, the water level sensor 100 fails, the processor 15 feeds this change back to the control computer board, and the control computer board alarms to remind the user that the water level sensor 100 has failed.
  • a control method of a washing machine is described.
  • a terminal of a water level sensor applied to a water level detecting device of the washing machine as described above is used.
  • the voltage difference is detected in real time.
  • the control method includes the following steps:
  • Step 3 The washing machine continues to operate normally
  • a washing machine which comprises a water level detecting device applied to a washing machine and a water level sensor 100 for controlling a computer board, a water level detecting device, and the like.
  • the air chamber of the washing machine is connected, and the water level inside the washing machine is measured through the air chamber; the water level sensor 100 is connected to the water level detecting device through the two terminals thereof, and the water level detecting device is connected with the control computer board to detect the water level sensor 100.
  • the water level inside the washing machine is fed back to the control computer board; and the washing machine adopts a control method of the washing machine as described above.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

新型水位传感器（100），包括壳体（1）、气盖（2）、调整螺钉受板（3），壳体（1）外壁上设有位于相邻端子（6）中间位置的挡板（102），以将相邻端子（6）相隔开，从而保证相邻端子（6）之间相互绝缘，避免了壳体（1）结露导致的端子（6）短路。一种洗衣机，其上装有如上水位传感器（100），水位传感器（100）与洗衣机的气室相连通，洗衣机电脑板根据水位传感器（100）的变化信号调节洗衣机水位高低，从而达到对水位的精确控制。

Description

新型水位传感器及洗衣机 技术领域
本发明属于洗衣机技术领域，具体地说，涉及一种新型水位传感器，还涉及一种应用此新型水位传感器的洗衣机。
背景技术
现有技术中水位传感器是一类用于检测水位信息并将水位转化为电信号的传感器，其包括气盖、壳体、隔膜、铁芯、主弹簧和线圈单元，壳体下部设有流体压力接收室。水压力通过气管传递到传感器气室，隔膜受气压的作用克服主弹簧的反弹力动刀铁芯向线圈方向移动，铁芯在线圈内部发生移动时，线圈的电感与铁芯的位移量相对应呈近似线性的变化，水位传感器经端子将这一线性变化传递给洗衣机电脑板，洗衣机电脑板根据水位传感器发出的信号精确控制洗衣机的水位。
由于水位传感器的使用环境较潮湿，将导致线圈和外壳结露，表面形成水珠，而使得水位传感器形成了电容效应，水位传感器的两个端子出现短路故障，影响输出频率。此外，接插件端子受潮湿环境的影响产生铜绿现象，与水位传感器的端子接触不良，以至于洗衣机出现空桶洗涤或者带水脱水的现象。
有鉴于此特提出本发明。
发明内容
本发明要解决的技术问题在于克服现有技术的不足，提供一种结构简单的新型水位传感器，以实现水位传感器防潮、提高安全可靠性的目的；本发明的另一目的在于提供一种应用于洗衣机的水位检测装置和洗衣机的控制方法及洗衣机，以实现检测水位传感器正常运转的目的，提高水位检测装置的可靠性。
为解决上述技术问题，本发明采用技术方案的基本构思是：
一种新型水位传感器，包括壳体、气盖、调整螺钉受板，壳体和气盖围成的腔室内装有线圈单元，线圈单元包括至少两个端子，所述端子自壳体的插接口伸出，均固定在壳体的同一侧，壳体外壁上设有位于相邻端子中间位置的挡板，以将相邻端子相隔开。
进一步，所述插接口平行相邻设置，处于同一高度，端子自壳体内部经相对应插接口伸出壳体外，并关于水位传感器轴线对称；挡板竖直设置在相邻插接口的中间位置，并与壳体外壁切线相垂直。
进一步，所述壳体包括向上凸起延伸、呈圆柱体状的凸起部以及径向延伸的底座，凸起部与底座内部中空以形成供线圈单元安装的空腔，底座位于凸起部的下方，并与气盖相配合连接；凸起部的同一侧设有两个插接口，端子自相对应的插接口伸出壳体外，凸起部外壁上设有位于插接口中间位置的挡板，挡板的一侧与凸起部外壁相贴合，另一侧向外延伸。
进一步，所述挡板的上下两端沿轴向竖直延伸，挡板的顶端高于端子的顶端，挡板的底端延伸至壳体的底座。
进一步，所述壳体外壁上设有位于端子上方的防护罩，防护罩水平放置、与端子相平行，并向外延伸。
进一步，所述壳体的顶端设有开口，调整螺钉受板经壳体顶端开口插入壳体内部以封堵顶端开口，调整螺钉受板的外周设有向下延伸的连接部，壳体外壁设有相对应的、以供连接部安装的凹槽，以令连接部与壳体外壁形成光滑的曲面；防护罩的一部分与壳体外壁相连接，另一部分与调整螺钉受板的连接部相连接固定。
进一步，所述防护罩的中部为一水平放置的固定部，固定部的两端分别连接竖直向下延伸的延伸部，固定部的一侧与壳体外壁和调整螺钉受板的连接部相紧密贴合连接，另一侧水平向外延伸。
进一步，所述固定部的底端与挡板的顶端相连接。
优选的，延伸部的底端不高于端子的底端。
进一步，所述壳体上设有位于端子下方的排水槽，排水槽的顶部与插接口相连通，底部竖直延伸至壳体的底座。
本发明的另一目的在于提供一种洗衣机，其上装有如上任一所述的水位传感器，水位传感器与洗衣机的气室相连通，并经过气室对洗衣机内部水位进行检测。
采用上述技术方案后，本发明与现有技术相比具有以下有益效果。
1、通过在壳体上设置位于相邻端子中间位置的挡板，以将相邻端子相隔开，从而保证相邻端子之间相互绝缘，避免了壳体结露导致的端子短路。
2、通过在壳体上设位于端子上方的防护罩，防护罩水平放置，并向外延伸，壳体上由于湿度大所形成的凝露将聚集至防护罩上，在重力的作用下，凝露流至壳体的底座上。通过设置防护罩，位于端子上方的壳体所产生的凝露将不会聚集到端子上，避免了端子受潮湿环境影响产生铜绿现象，从而避免了端子接触不良情况的发生，进一步避免了洗衣机出现空桶洗涤或带水脱水的情况。
3、通过设置排水槽，端子四周或者端子上所形成的凝露沿着排水槽流至壳体的底座上，以达到端子防潮的目的。
下面结合附图对本发明的具体实施方式作进一步详细的描述。
附图说明
附图作为本发明的一部分，用来提供对本发明的进一步的理解，本发明的示意性实施例及其说明用于解释本发明，但不构成对本发明的不当限定。显然，下面描述中的附图仅仅是一些实施例，对于本领域普通技术人员来说，在不付出创造性劳动的前提下，还可以根据这些附图获得其他附图。在附图中：
图1是本发明实施例中水位传感器的结构示意图；
图2是本发明实施例中水位传感器的正视图；
图3是图2沿A-A方向的剖视图；
图4是本发明实施例中调节螺钉受板的结构示意图；
图5是本发明实施例中水位检测装置的示意图；
图6是本发明实施例中洗衣机的控制方法流程图。
图中：100-水位传感器、200-分压电路、300-振荡电路、1-壳体、2-气盖、3-调整螺钉受板、4-橡胶隔膜、5-线圈轴、6-端子、7-线圈、8-调整螺钉、9-磁芯、10-铆接圈、11-进气嘴、101-插接口、102-挡板、103-排水槽、104-凸起部、105-底座、106-凹槽、301-连接部、302-防护罩、3021-固定部、3022-延伸部、303-调节孔、304-卡爪、12-第一端子、13-第二端子、14-上拉电阻、15-处理器。
需要说明的是，这些附图和文字描述并不旨在以任何方式限制本发明的构思范围，而是通过参考特定实施例为本领域技术人员说明本发明的概念。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对实施例中的技术方案进行清楚、完整地描述，以下实施例用于说明本发明，但不用来限制本发明的范围。
如图1至图4所示，本发明实施例中介绍了一种新型水位传感器100，包括壳体1、气盖2、调整螺钉受板3，壳体1和气盖2围成的腔室内装有橡胶隔膜4，橡胶隔膜4将腔室分为上下两个腔室，下腔室为进气空腔，进气空腔与气盖2上设有的进气嘴11相连通；上腔室内装有线圈单元，线圈单元包括线圈轴5、电感线圈7和至少两个端子6；壳体1上设有插接口101，端子6自壳体1的插接口101伸出，均固定在壳体1的同一侧，壳体1外壁上设有位于相邻端子6中间位置的挡板102，以将相邻端子6相隔开，从而保证相邻端子6之间相互绝缘，避免了壳体1结露导致的端子6短路。
本发明实施例中还介绍了一种洗衣机，其上装有如上所述的一种新型水位传感器100，洗衣机包括内桶和外桶，洗衣机的外桶与气室相连通，水位传感器100的进气空腔通过进气嘴11与洗衣机的气室相连通，以令洗衣机的外桶与水位传感器100相连通；水为传感器100经气室对洗衣机内部水位进行检测，水位传感器100的端子6与洗衣机的控制电路相连接，以令水位传感器100向洗衣机的电脑板反馈变化信号，洗衣机电脑板根据变化信号调节洗衣机水位高低，从而达到对水位的精确控制。
实施例一
如图1至图4所示，本实施例中介绍了一种新型水位传感器100，包括壳体1、气盖2、调整螺钉受板3，壳体1和气盖2围成的腔室内装有橡胶隔膜4，橡胶隔膜4将腔室分为上下两个腔室，下腔室为进气空腔，进气空腔与气盖2上设有的进气嘴11相连通；上腔室内装有线圈单元，线圈单元包括线圈轴5、电感线圈7和至少两个端子6。
本实施例中，气盖2与壳体1的底部通过铆接圈10相固定连接，气盖2与壳体1围成的腔室内装有橡胶隔膜4，橡胶隔膜4的一侧连接进气空腔，隔膜的另一侧连接圆筒形磁芯9；上腔室内还装有线圈单元，线圈单元位于磁芯9的上方。线圈单元包括线圈轴5、电感线圈7和至少两个端子6，线圈轴5与磁芯9同轴设置，电感线圈7缠绕在线圈轴5上，电感线圈7的两端连接两个端子6，气压通过进气空腔作用在橡胶隔膜4上，从而推动橡胶隔膜4上下动作，橡胶隔膜4动作带动磁芯9上下移动，磁芯9移动时切割电感线圈7的电磁线，从而带动电感线圈7的电感量发生变化，电感量的变化 经端子6反馈到洗衣机电脑板，洗衣机电脑板根据电感量的信号，判断洗衣机水位是否达到要求位置。壳体1的上端与调整螺钉受板3相连接，调整螺钉受板3顶部设有安装调节螺钉的调节孔303，调节螺钉穿过调节孔303置于线圈轴5中，调节螺钉在调节孔303内的位置能够改变电磁量，从而达到精确调节的目的。
本实施例中，线圈轴5为中空的圆筒形结构，在线圈轴5的上下两端均设有凸出以限位支撑电感线圈7的外延，稳定的承托电感线圈7，线圈轴5上还设有朝向插接口101方向凸出的插块，插块上设有对应插接端子6的插槽。端子6由内向外插接至插槽内，在端子6的后端设有折弯的限位卡钩。通过令端子6从内向外插接，端子6的后端经调整螺钉8受板3挡板102，在强力作用下端子6不易移动，从而在外部强力拉拔端子6时不易引起线圈断线的情况。
实施例二
如图1至图4所示，本实施例中介绍了一种新型水位传感器100，包括壳体1、气盖2、调整螺钉受板3，壳体1和气盖2围成的腔室内装有线圈单元，线圈单元包括线圈轴5、电感线圈7和至少两个端子6；壳体1上设有插接口101，端子6自壳体1的插接口101伸出，均固定在壳体1的同一侧，壳体1外壁上设有位于相邻端子6中间位置的挡板102，以将相邻端子6相隔开，从而保证相邻端子6之间相互绝缘，避免了壳体1结露导致的端子6短路。
本实施例中，插接口101平行相邻设置，处于同一高度，端子6经自壳体1内部经相对应插接口101伸出壳体1外，并关于水位传感器100轴线对称，挡板102竖直设置在相邻插接口101的中间位置，并与壳体1外壁切线相垂直，以将两个端子6相隔开。所述壳体1包括向上凸起延伸、呈圆柱体状的凸起部104以及径向延伸的底座105，凸起部104与底座105内部中空以形成供线圈单元安装的空腔，底座105位于凸起部104的下方，并与气盖2相配合连接；凸起部104的同一侧设有两个插接口101，端子6自相对应的插接口101伸出壳体外、固定在凸起部104的同一侧，凸起部104外壁上设有位于插接口101中间位置的挡板102，挡板102的一侧与凸起部104外壁相贴合固定连接，另一侧向外延伸。挡板102的上下两端沿轴向竖直延伸，挡板102的顶端高于端子6的顶端，挡板102的底端延伸至壳体1的底座105。
实施例三
如图1至图4所示，本实施例中壳体1外壁上设有位于端子6上方的防护罩302，防护罩302水平放置、与端子相平行，并向外延伸。壳体1上由于湿度大所形成的凝露将聚集至防护罩302上，在重力的作用下，凝露流至壳体1的底座105上。通过设置防护罩302，位于端子6上方的壳体1所产生的凝露将不会聚集到端子6上，避免了端子6受潮湿环境影响产生铜绿现象，从而避免了端子6接触不良情况的发生，进一步避免了洗衣机出现空桶洗涤或带水脱水的情况。
本实施例中，壳体1的顶端设有开口，调整螺钉受板3经壳体1顶端开口插入壳体1内部以封堵顶端开口，调整螺钉受板3的四周设有向下延伸的卡爪304，调整螺钉受板3经卡爪304与壳体1相卡接，调整螺钉受板3的外周还设有向下延伸的连接部301，壳体1外壁设有相对应的、以供连接部301安装的凹槽106，以令连接部301与壳体1外壁形成光滑的曲面；防护罩302的一部分与壳1体外壁相连接，另一部分与调整螺钉受板3的连接部301相连接固定，防护罩302与调整螺钉受板3一体设置或分开设置。
本实施例中，防护罩302的中部为一水平放置的固定部3021，固定部3021的两端分别连接竖直向下延伸的延伸部3022，固定部3021的一侧与壳体1外壁和调整螺钉受板3的连接部301相紧密贴合连接，另一侧水平向外延伸。固定部3021的底端与挡板102的顶端相连接。延伸部3022的底端不高于端子6的底端。端子6上方所形成凝露聚集到固定部3021的上端，当凝露聚集到一定量后，在重力的作用下，凝露沿着延伸部3022掉落到壳体1的底座105上。
本实施例中，壳体1上设有位于端子6下方的排水槽103，排水槽103的顶部与插接口101相连通，底部竖直延伸至壳体1的底座105。通过设置排水槽103，端子6四周或者端子6上所形成的凝露沿着排水槽103流至壳体1的底座105上，以达到端子6防潮的目的。
实施例四
如图1至图4所示，本实施例中介绍了一种洗衣机，其上装有如上任一所述的一种新型水位传感器100，洗衣机包括内桶和外桶，洗衣机的外桶与气室相连通，水位传感器100的进气空腔通过进气嘴11与洗衣机的气室相连通，以令洗衣机的外桶与水位传感器100相连通；水位传感器100的端子6与洗衣机的控制电路相连接，以令水位传感 器100向洗衣机的电脑板反馈变化信号，洗衣机电脑板根据变化信号调节洗衣机水位高低，从而达到对水位的精确控制。
本实施例中，在洗衣机工作时，洗衣机的气室根据外桶水量变化而导致气压变化，从而气压通过进气空腔作用在橡胶隔膜4上，从而推动橡胶隔膜4上下动作，橡胶隔膜4动作带动磁芯9上下移动，磁芯9移动时切割电感线圈7的电磁线，从而带动电感线圈7的电感量发生变化，电感量的变化经端子6反馈到洗衣机电脑板，洗衣机电脑板根据电感量的信号，判断洗衣机水位是否达到要求位置。如果水位未达到要求位置，则控制进水阀打开，向洗衣机内供水，提高水位，直到达到要求位置；如果洗衣机电脑板根据电感量信号，判断洗衣机水位超过要求位置，则再次控制排水阀打开，向外排水，降低水位，直到达到要求水位位置，从而实现有效控制洗衣机水位的目的。
实施例五
如图5至图6所示，本发明实施例中介绍了一种应用于洗衣机的水位检测装置，包括水位传感器100、振荡电路300、分压电路200和处理器15，水位传感器100用于对洗衣机内部水位进行检测，振荡电路300与水位传感器100相连接，分压电路200经水位传感器100与振荡电路300相连接，处理器15分别与振荡电路300和分压电路200相连接，以接收振荡电路和分压电路发出的电信号，并计算出对应的水位值和电压值。通过设置分压电路200，可以经分压电路200的电压差来判断水位传感器100是否由于潮湿环境而失效，提高了检测装置的可靠程度。
本发明实施例中还介绍了一种洗衣机的控制方法，在洗衣机运行过程中对如上任一所述的一种应用于洗衣机的水位检测装置中的水位传感器的端子间的电压差进行实时检测。通过在洗衣机运行过程中实时检测水位传感器中的端子间的电压差，可以确保水位传感器的正常运行，避免水位传感器由于潮湿环境失效无法进行正常的水位检测，从而进一步避免洗衣机出现空桶洗涤或带水脱水的情况。
本发明实施例中还介绍了一种洗衣机，该洗衣机包括如上任一所述的一种应用于洗衣机的水位检测装置和控制电脑板，水位检测装置的水位传感器100与洗衣机的气室相连接，通过气室测得洗衣机内部的水位；水位传感器100通过其两个端子接入水位检测装置，水位检测装置与控制电脑板相连接，以将水位传感器100所检测到的洗衣机内部水位反馈给控制电脑板；并且该洗衣机采用如上任一所述的一种洗衣机的控制方法。
实施例六
如图5所示，本实施例中介绍了一种应用于洗衣机的水位检测装置，包括水位传感器100、振荡电路300、分压电路200和处理器15，水位传感器100用于对洗衣机内部水位进行检测，振荡电路300与水位传感器100相连接，分压电路200经水位传感器100与振荡电路300相连接，处理器15分别与振荡电路300和分压电路200相连接，以接收振荡电路和分压电路发出的电信号，并计算出对应的水位值和电压值。通过设置分压电路200，可以经分压电路200的电压差来判断水位传感器100是否由于潮湿环境而失效，提高了检测装置的可靠程度。
本实施例中，振荡电路300与水位传感器100相连接，水位传感器100的磁芯由于上下移动切割线圈产生电感，电感通过与振荡电路300的容阻相结合向处理器15传递振荡频率方波，处理器15经过计算水位传感器100所测得的水位值，并反馈给洗衣机的控制电脑板，振荡电路300的组成具体参见附图1。
本实施例中，水位传感器100包括第一端子12和第一端子13，第一端子12与振荡电路300相连接，振荡电路300还设有接地装置，接地装置与第一端子12相连接，第一端子13分别与振荡电路300和分压电路200相连接。分压电路200的输出端分别与水位传感器100的第一端子13和处理器1相连接，分压电路200包括上拉电阻14，上拉电阻14的一端与第一端子13相连接，另一端接地。通过设置一端接地，一端连接第二端子的上拉电阻14，上拉电阻14两端的电压差与水位传感器100两个端子间的电压差相等，可以通过测量上拉电阻14两端的电压差直接计算出水位传感器100两个端子间的电压差，当上拉电阻14由于水位传感器100所处的潮湿环境导致电阻发生变化，其两端电压差同时发生变化，相当于水位传感器100两端子间的电压差发生变化，此时，可以通过处理器15检测出这一电压的改变，并将其反馈给控制电脑板。当水位传感器100所述的环境过于潮湿时，此时上拉电阻14失效，相当于水位传感器100的第一端子13越过上拉电阻14直接接地，此刻水位传感器100的第一端子12和第一端子13同时接地，水位传感器100失效，处理器15将这一变化反馈给控制电脑板，控制电脑板报警提醒用户水位传感器100失效。
实施例七
如图5至图6所示，本实施例中介绍了一种洗衣机的控制方法，在洗衣机运行过程中对如上任一所述的一种应用于洗衣机的水位检测装置中的水位传感器的端子间的电压差进行实时检测。该控制方法包括如下步骤：
步骤1：洗衣机通电运行，对水位传感器两个端子间的电压差开始进行实时检测；
步骤2：通过检测上拉电阻两端的电压差计算出水位传感器两个端子间的电压差，并判断水位传感器两个端子间的电压差是否处于设定范围内，如果是，执行步骤3，否则，执行步骤4；
步骤3：洗衣机继续正常运行；
步骤4：洗衣机停止运行。
本实施例中，上拉电阻14两端的电压差经分压电路200的输出端传递给处理器15，处理器15计算出水位传感器100两个端子间的电压差并反馈给控制电脑板，水位传感器100两个端子间的电压差与上拉电阻14两端的电压差相等。若水位传感器100两个端子间的电压差处于设定范围内，洗衣机继续正常运行直至结束；若水位传感器100两个端子间的电压差处于设定范围外，处理器将这一计算结果传递给控制电脑板，控制电脑板报警显示，提示用户水位传感器电压异常，用户可根据洗衣机说明书排除故障问题，必要时可更换水位传感器。通过在洗衣机运行过程中实时检测水位传感器两个端子间的电压差，可以确保水位传感器的正常运行，避免水位传感器由于潮湿环境失效无法进行正常的水位检测，从而进一步避免洗衣机出现空桶洗涤或带水脱水的情况。
实施例八
如图5至图6所示，本实施例中介绍了一种洗衣机，该洗衣机包括如上任一所述的一种应用于洗衣机的水位检测装置和控制电脑板，水位检测装置的水位传感器100与洗衣机的气室相连接，通过气室测得洗衣机内部的水位；水位传感器100通过其两个端子接入水位检测装置，水位检测装置与控制电脑板相连接，以将水位传感器100所检测到的洗衣机内部水位反馈给控制电脑板；并且该洗衣机采用如上任一所述的一种洗衣机的控制方法。
如图6所示，本实施例中的洗衣机采用如上任一所述的一种洗衣机控制方法，在洗衣机运行过程中对水位传感器100两个端子间的电压差进行实时检测，判断水位传感器 100两个端子间的电压差是否处于设定范围内，若两个端子的电压差处于设定范围内，洗衣机判定水位传感器能进行正常工作，洗衣机继续正常运行，直至结束；若水位传感器100两个端子间的电压差处于设定范围外，则洗衣机判定水位传感器出现异常，控制电路板发出报警显示，提示用户水位传感器发生异常，用户可根据洗衣机说明书排出故障问题，必要时可更换水位传感器。
以上所述仅是本发明的较佳实施例而已，并非对本发明作任何形式上的限制，虽然本发明已以较佳实施例揭露如上，然而并非用以限定本发明，任何熟悉本专利的技术人员在不脱离本发明技术方案范围内，当可利用上述提示的技术内容作出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本发明方案的范围内。

Claims (10)

  1. 一种新型水位传感器，包括壳体、气盖、调整螺钉受板，壳体和气盖围成的腔室内装有线圈单元，线圈单元包括至少两个端子，其特征在于，所述端子自壳体的插接口伸出，均固定在壳体的同一侧，壳体外壁上设有位于相邻端子中间位置的挡板，以将相邻端子相隔开。
  2. 根据权利要求1所述的一种新型水位传感器，其特征在于，所述插接口平行相邻设置，处于同一高度，端子自壳体内部经相对应插接口伸出壳体外，并关于水位传感器轴线对称；挡板竖直设置在相邻插接口的中间位置，并与壳体外壁切线相垂直。
  3. 根据权利要求2所述的一种新型水位传感器，其特征在于，所述壳体包括向上凸起延伸、呈圆柱体状的凸起部以及径向延伸的底座，凸起部与底座内部中空以形成供线圈单元安装的空腔，底座位于凸起部的下方，并与气盖相配合连接；凸起部的同一侧设有两个插接口，端子自相对应的插接口伸出壳体外，凸起部外壁上设有位于插接口中间位置的挡板，挡板的一侧与凸起部外壁相贴合，另一侧向外延伸。
  4. 根据权利要求3所述的一种新型水位传感器，其特征在于，所述挡板的上下两端沿轴向竖直延伸，挡板的顶端高于端子的顶端，挡板的底端延伸至壳体的底座。
  5. 根据权利要求1至4任一所述的一种新型水位传感器，其特征在于，所述壳体外壁上设有位于端子上方的防护罩，防护罩水平放置、与端子相平行，并向外延伸。
  6. 根据权利要求5所述的一种新型水位传感器，其特征在于，所述壳体的顶端设有开口，调整螺钉受板经壳体顶端开口插入壳体内部以封堵顶端开口，调整螺钉受板的外周设有向下延伸的连接部，壳体外壁设有相对应的、以供连接部安装的凹槽，以令连接部与壳体外壁形成光滑的曲面；防护罩的一部分与壳体外壁相连接，另一部分与调整螺钉受板的连接部相连接固定。
  7. 根据权利要求6所述的一种新型水位传感器，其特征在于，所述防护罩的中部为一水平放置的固定部，固定部的两端分别连接竖直向下延伸的延伸部，固定部的一侧与壳体外壁和调整螺钉受板的连接部相紧密贴合连接，另一侧水平向外延伸。
  8. 根据权利要求7所述的一种新型水位传感器，其特征在于，所述固定部的底端与挡板的顶端相连接；
    优选的，延伸部的底端不高于端子的底端。
  9. 根据权利要求1至8任一所述的一种新型水位传感器，其特征在于，所述壳体上设有位于端子下方的排水槽，排水槽的顶部与插接口相连通，底部竖直延伸至壳体的底座。
  10. 一种洗衣机，其特征在于，其上装有上述权利要求1至9任一所述的水位传感器，水位传感器与洗衣机的气室相连通。
PCT/CN2019/081734 2018-04-10 2019-04-08 新型水位传感器及洗衣机 Ceased WO2019196789A1 (zh)

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