WO2023151156A1 - 一种清洁设备的缺水检测装置 - Google Patents

一种清洁设备的缺水检测装置 Download PDF

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WO2023151156A1
WO2023151156A1 PCT/CN2022/082462 CN2022082462W WO2023151156A1 WO 2023151156 A1 WO2023151156 A1 WO 2023151156A1 CN 2022082462 W CN2022082462 W CN 2022082462W WO 2023151156 A1 WO2023151156 A1 WO 2023151156A1
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water
module
water shortage
shortage detection
main body
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PCT/CN2022/082462
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English (en)
French (fr)
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沈强
韦启峰
李伟
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昆山鑫泰利智能科技股份有限公司
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Publication of WO2023151156A1 publication Critical patent/WO2023151156A1/zh

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid

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  • the utility model relates to the technical field of cleaning equipment, in particular to a water shortage detection device for cleaning equipment.
  • the water pump When the water in the fresh water tank in the cleaning equipment is used up, the water pump will enter the idling state if it continues to run, which will easily cause the pump body to overheat, seriously affect the service life of the water pump, and cause damage to the cleaning equipment.
  • the utility model with the Chinese patent application number 202020853105.2 discloses a water shortage detection system for clean water tanks applied to small surface cleaning equipment.
  • the related technologies used in this patent solve the problem.
  • the cost of this technology is high, the installation and maintenance are more complicated, and the detection accuracy is not high.
  • a water shortage detection device for cleaning equipment which detects the water shortage of the clean water tank in the cleaning equipment, and reminds the user to deal with it accordingly.
  • This utility model is to provide a water shortage detection device for cleaning equipment to solve the problems raised in the above-mentioned background technology.
  • a water shortage detection device for cleaning equipment comprising:
  • a system control unit the system control unit is provided with a conversion module, a judgment module and an output module, the output end of the conversion module is connected to the judgment module, and the output end of the judgment module is connected to the output module;
  • a detection unit the detection unit is provided with two metal conductors, and a water storage container is connected between the two metal conductors;
  • the metal conductor establishes a connection with the system control unit through a lead wire
  • the metal conductor includes a main body and a sealing port coaxially arranged on the main body.
  • the middle parts of the main body and the sealing port are provided with through holes penetrating both ends.
  • the metal conductor is a conductor made of stainless steel.
  • sealing port is in the shape of a conical boss.
  • the lead wire is connected to the middle of the outer wall of the main body by welding or winding.
  • the water storage container is a water storage container of insulating material, and the shape of the water storage container is box-shaped or tubular.
  • the water storage container is transparent.
  • system control unit is a PCB circuit board.
  • the water shortage detection device can be directly plugged and installed on the water delivery pipe; it can effectively improve the accuracy of detection, reduce misjudgment, and has low cost, and is easy to install, maintain and replace.
  • Fig. 1 is the structural representation of the utility model
  • Fig. 2 is the structural representation of the utility model metal conductor
  • Fig. 3 is the cross-sectional view of the metal conductor of the present invention.
  • Fig. 4 is the side view of the metal conductor of the present invention.
  • Fig. 5 is a system logic block diagram of the utility model.
  • Cleaning equipment refers to the washing machine, which is usually equipped with a housing, a driving power supply, a display screen, a main motor, a fresh water tank, a dirty water tank, and a ground brush assembly.
  • the ground brush assembly is provided with a water pump, a rolling brush, a water spray mechanism, a scraper, a rolling brush cover plate, and a water shortage detection device.
  • a water shortage detection device for cleaning equipment comprising:
  • a system control unit 1 the system control unit 1 is provided with a conversion module, a judgment module and an output module, the system control unit 1 is a PCB circuit board, and the conversion module, the judgment module and the output module are integrated on the PCB circuit board, so The output end of the conversion module is connected to the judgment module, and the output end of the judgment module is connected to the output module;
  • FIG. 5 it is a logic diagram between the system control unit 1 and the detection unit 5.
  • the judgment module adopts PLC, and the detection unit 5 outputs the detected resistance value to the conversion module, and the AD analog-to-digital converter is integrated in the conversion module.
  • the module calculates and outputs the resistance value as a voltage value digital signal identified by the judging module, and the judging module judges whether the clean water tank of the cleaning device is in a water shortage state based on the voltage value.
  • the detection unit 5 is provided with two metal conductors 2, the water storage container 3 is connected between the two metal conductors 2, and the metal conductor 2 is a conductor made of stainless steel; the two metal conductors 2 of the detection unit 5 each have a lead wire 4. Form a circuit and set it on the system control unit 1.
  • the metal conductor 2 includes a main body 21 and a sealing port 22 coaxially arranged on the main body 21.
  • the lead wire 4 is connected to the outer wall of the main body 21 by welding or winding In the middle, the sealing port 22 is in the shape of a conical boss. It is conducive to plugging and unplugging, easy to assemble with the water pipe, convenient to assemble and has good sealing performance.
  • the middle part of the main body 21 and the sealing port 22 is provided with a through hole 23 that runs through both ends.
  • Two metal conductors 2 are arranged on the water delivery pipe between the clean water tank of the floor scrubber and the water pump inside the floor brush assembly, installed inside the floor brush assembly, and used to detect whether there is water flow in the clean water tank passing through the water delivery pipe The device reaches the water pump to judge whether the clean water tank of the cleaning equipment is short of water, and the metal conductor 2 and the water storage container 3 are communicated with the water delivery pipe.
  • the water storage container 3 is transparent. It is convenient to observe the inside, and it can be seen whether there is water in the water storage container 3, and it can also be used as a basis for checking whether the detection result of this scheme is accurate.
  • the water storage container 3 is a water storage container of insulating material, and the shape of the water storage container 3 is box-shaped or tubular.
  • the sealed port 22 at one end is connected to the water delivery pipe, and the other end is connected to the water storage container 3 .
  • the judgment module in the system control unit 1 presets a judgment voltage value U, applies a voltage to the two metal conductors 2, detects the resistance of the fluid in the water storage container between the metal conductors 2 for a certain period of time, and converts The module converts the detected resistance value into a voltage value and compares it with the preset judgment voltage value U to judge whether there is water shortage in the water storage container, thereby inferring whether the clean water tank of the cleaning equipment is short of water.
  • the module obtains the detection voltage value U1, and the detection voltage value U1 obtains a digital signal of the detection voltage value U1 through the AD conversion module, and outputs it to the judgment module, and the judgment module compares U1 with U.
  • the resistance of the material is:
  • ⁇ is the resistivity (related to the material, it is a fixed value)
  • L is the length of the resistor
  • S is the cross-sectional area of the resistor.
  • the resistance R is directly proportional to L
  • the resistance R is inversely proportional to S.
  • the resistivity ⁇ is the resistivity of water, which is a certain value
  • the length L is the length between two metal conductors 2, which is also a constant value
  • the variable is the resistance cross-sectional area S.
  • the resistance cross-sectional area S is smaller, and the resistance value of the resistance R is larger.
  • the detection voltage value U1 converted by the conversion module will be lower than the preset judgment voltage value Uset.
  • the detection voltage value U1 converted by the conversion module will be higher than the preset judgment voltage value Uset.
  • the detection voltage value U1 converted from the water in the water storage container 3 between the metal conductors 2 is compared with the preset judgment voltage value Uset, and if it is higher than the preset judgment voltage value Uset, the judgment There is no water inflow in the water storage container 3; if it is lower than the preset judgment voltage value U, it is determined that there is water inflow in the water storage container 3, thereby inferring whether the fresh water tank of the cleaning equipment is short of water.
  • Using the water shortage detection device effectively improves the detection efficiency and accuracy rate, reduces misjudgment, and has low cost, and is easy to install, maintain and replace.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

本实用新型属于清洁设备技术领域，具体为一种清洁设备的缺水检测装置，包括：系统控制单元，所述系统控制单元内设有换算模块、判断模块和输出模块，所述换算模块的输出端与判断模块连接，所述判断模块的输出端与输出模块连接；检测单元，所述检测单元设有两个金属导电体，两个金属导电体之间连接储水容器；所述金属导电体通过引线与系统控制单元建立连接；所述金属导电体包括主体部和同轴设置在主体部的密封端口，所述主体部、密封端口的中部开设有贯穿两端的通孔。本缺水检测装置可直接插拔的设置于输水管上；可有效提升检测的正确率，减少误判，且成本较低，易于安装、维修及更换。

Description

一种清洁设备的缺水检测装置 技术领域
本实用新型涉及清洁设备技术领域，具体为一种清洁设备的缺水检测装置。
背景技术
清洁设备中清水箱内水用尽时，水泵继续运转就会进入空转状态，容易使泵体产生过热现象，严重影响水泵的使用寿命，导致清洁设备损坏。
例如中国专利申请号为202020853105.2的实用新型公开了一种应用于小型表面清洁设备的清水箱缺水检测系统，该专利中使用的相关技术解决问题。但是该项技术成本较高，安装及维修较为复杂，检测准确率不高。
为此，我们提出一种清洁设备的缺水检测装置，在清洁设备中对清水箱缺水的情况进行检测，提醒使用者进行相应处理。
实用新型内容
本实用新型的目的在于提供一种清洁设备的缺水检测装置，以解决上述背景技术中提出的问题。
为实现上述目的，本实用新型提供如下技术方案：一种清洁设备的缺水检测装置，包括：
系统控制单元，所述系统控制单元内设有换算模块、判断模块和输出模块，所述换算模块的输出端与判断模块连接，所述判断模块的输出端与输出模块连接；
检测单元，所述检测单元设有两个金属导电体，两个金属导电体之间连接储水容器；
所述金属导电体通过引线与系统控制单元建立连接；
所述金属导电体包括主体部和同轴设置在主体部的密封端口，所述主体部、密封端口的中部开设有贯穿两端的通孔。
进一步地，所述金属导电体为不锈钢材质的导电体。
进一步地，所述密封端口为锥形凸台状。
进一步地，所述引线以焊接方式或缠绕方式连接在主体部的外壁中部。
进一步地，所述储水容器为绝缘材料的储水容器，且储水容器形状为盒状或管状。
进一步地，所述储水容器为透明状。
进一步地，所述系统控制单元为一PCB电路板。
与现有技术相比，本实用新型的有益效果是：
本缺水检测装置可直接插拔的设置于输水管上；可有效提升检测的正确率，减少误判，且成本较低，易于安装、维修及更换。
附图说明
图1为本实用新型结构示意图；
图2为本实用新型金属导电体的结构示意图；
图3为本实用新型金属导电体的剖视图；
图4为本实用新型金属导电体的侧视图；
图5为本实用新型的系统逻辑框图。
图中：1系统控制单元、2金属导电体、21主体部、22密封端口、23通孔、3储水容器、4引线、5检测单元。
具体实施方式
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本实用新型保护的范围。
在本实用新型的描述中，需要理解的是，术语“上”、“下”、“前”、“后”、 “左”、“右”、“顶”、“底”、“内”、“外”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实用新型和简化描述，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实用新型的限制。
实施例：
清洁设备指洗地机，通常设置有壳体，驱动电源，显示屏幕，主电机，清水箱，污水箱，地刷组件等。该地刷组件内部设有水泵，滚刷，喷水机构，刮板，滚刷盖板，缺水检测装置。
请参阅图1-5，本实用新型提供一种解决现有技术成本较高、安装及维修较为复杂、检测准确率不高的技术方案：
一种清洁设备的缺水检测装置，包括：
系统控制单元1，所述系统控制单元1内设有换算模块、判断模块和输出模块，系统控制单元1为一PCB电路板，换算模块、判断模块和输出模块集成在该PCB电路板上，所述换算模块的输出端与判断模块连接，所述判断模块的输出端与输出模块连接；
如图5所示，为系统控制单元1与检测单元5之间的逻辑图，判断模块采用PLC，检测单元5将检测的电阻值输出至换算模块，换算模块内集成AD模数转换器，换算模块将电阻值计算输出为判断模块识别的电压值数字信号，判断模块基于该电压值判断清洁设备的清水箱是否处于缺水状态。
检测单元5设有两个金属导电体2，两个金属导电体2之间连接储水容器3，金属导电体2为不锈钢材质的导电体；检测单元5的两个金属导电体2各有一引线4，形成一个电路并设置于系统控制单元1上，金属导电体2包括主体部21和同轴设置在主体部21的密封端口22，引线4以焊接方式或缠绕方式连接在主体部21的外壁中部，密封端口22为锥形凸台状。有利于插拔，容易与输水管装配，方便组装且密封性好，所述主体部21、密封端口22的中 部开设有贯穿两端的通孔23。两个金属导电体2设置于洗地机的清水箱与地刷组件内部的水泵连接之间的输水管上，安装于地刷组件内部，用于检测输水管是否有清水箱内的水流通过检测装置到达水泵，来判断该清洁设备的清水箱是否缺水，且金属导电体2、储水容器3与该输水管连通。
储水容器3为透明状。方便对内部观察，能够看到储水容器3内是否有水，也能作为检验本方案检测结果是否准确的依据。储水容器3为绝缘材料的储水容器，且储水容器3形状为盒状或管状。
如图1所示，一端的密封端口22与输水管连接、另一端与储水容器3连接。
上述缺水检测的流程具体为：
系统预设定参数：
系统控制单元1内的判断模块预设一个判断电压值U设，在两个金属导电体2加上电压，通过持续一定时间检测金属导电体2之间的储水容器内流体的电阻，通过换算模块将检测的电阻值换算成电压值来与预设的判断电压值U设进行对比，来判断储水容器内是否缺水，从而推断出清洁设备的清水箱是否缺水。
检测过程：
换算模块计算方式为，串联电阻中，U1＝R1/(R1+R2)*U总，此处，U1为两个金属导电体2上的检测电压值，R1为检测金属导电体2之间的电阻值，R2为供电回路上固定电阻值，U总为加在两个金属导电体2上的定值电压值，检测金属导电体2之间的电阻值R1，基于上述计算公式，并通过换算模块得到检测电压值U1，检测电压值U1经AD转换模块得到检测电压值U1数字信号，并输出至判断模块，判断模块将U1与U设比较。
判断过程：
在温度一定的情况下，材料的电阻为：
R＝ρL/S；
其中，ρ就是电阻率(与材料有关，为定值)，L为电阻长度，S为电阻横截面积，从这里可以看出，电阻R与L呈正比，电阻R与S呈反比。在本方案中，电阻率ρ就是水的电阻率，是一定值，长度L为两个金属导电体2之间长度，也是定值，变量为电阻横截面积S。
当储水容器3内水越多时，则电阻横截面积S越大，电阻R阻值越小；
当储水容器3内水越少时，则电阻横截面积S越小，电阻R阻值越大。
当水从输水管经金属导电体2的通孔23流入储水容器3时，通过换算模块换算出的检测电压值U1就会低出预设的判断电压值U设。
当水未从输水管经金属导电体2的通孔23流入储水容器3时，通过换算模块换算出的检测电压值U1就会高出预设的判断电压值U设。
得出结果：测出金属导电体2之间的储水容器3内水换算出的检测电压值U1与预设的判断电压值U设进行对比，高于预设的判断电压值U设，判定储水容器3内没有水流入；低于预设的判断电压值U设，判定储水容器3内有水流入，从而推断出清洁设备的清水箱是否缺水。
利用本缺水检测装置有效的提升了检测的效率及正确率，减少误判，且成本较低，易于安装、维修及更换。
以上显示和描述了本实用新型的基本原理和主要特征和本实用新型的优点,对于本领域技术人员而言，显然本实用新型不限于上述示范性实施例的细节，而且在不背离本实用新型的精神或基本特征的情况下，能够以其他的具体形式实现本实用新型；因此，无论从哪一点来看，均应将实施例看作是示范性的，而且是非限制性的，本实用新型的范围由所附权利要求而不是上述说明限定，因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本实用新型内，不应将权利要求中的任何附图标记视为限制所涉及的权利要求。
尽管已经示出和描述了本实用新型的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本实用新型的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本实用新型的范围由所附权利要求及其等同物限定。

Claims (7)

  1. 一种清洁设备的缺水检测装置，其特征在于，包括：
    系统控制单元(1)，所述系统控制单元(1)内设有换算模块、判断模块和输出模块，所述换算模块的输出端与判断模块连接，所述判断模块的输出端与输出模块连接；
    检测单元(5)，所述检测单元(5)设有两个金属导电体(2)，两个金属导电体(2)之间连接储水容器(3)；
    所述金属导电体(2)通过引线(4)与系统控制单元(1)建立连接；
    所述金属导电体(2)包括主体部(21)和同轴设置在主体部(21)的密封端口(22)，所述主体部(21)、密封端口(22)的中部开设有贯穿两端的通孔(23)。
  2. 根据权利要求1所述的一种清洁设备的缺水检测装置，其特征在于：所述金属导电体(2)为不锈钢材质的导电体。
  3. 根据权利要求1所述的一种清洁设备的缺水检测装置，其特征在于：所述密封端口(22)为锥形凸台状。
  4. 根据权利要求1所述的一种清洁设备的缺水检测装置，其特征在于：所述引线(4)以焊接方式或缠绕方式连接在主体部(21)的外壁中部。
  5. 根据权利要求1所述的一种清洁设备的缺水检测装置，其特征在于：所述储水容器(3)为绝缘材料的储水容器，且储水容器(3)形状为盒状或管状。
  6. 根据权利要求1所述的一种清洁设备的缺水检测装置，其特征在于：所述储水容器(3)为透明状。
  7. 根据权利要求1所述的一种清洁设备的缺水检测装置，其特征在于：所述系统控制单元(1)为一PCB电路板。
PCT/CN2022/082462 2022-02-08 2022-03-23 一种清洁设备的缺水检测装置 WO2023151156A1 (zh)

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Publication number Priority date Publication date Assignee Title
CN208054943U (zh) * 2018-02-11 2018-11-06 广东万家乐燃气具有限公司 缺水保护装置及净水器
CN109343123A (zh) * 2018-12-14 2019-02-15 北京瀚卫高新技术有限公司 一种水流检测装置
EP3489425A2 (de) * 2017-11-22 2019-05-29 Gebr. Kemper GmbH + Co. KG Metallwerke Vorrichtung und verfahren zur überwachung der spülaktivitäten einer wasserleitung
CN210089799U (zh) * 2019-07-05 2020-02-18 合肥英唐电子有限公司 基于单片机ad检测的水流检测电路

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3489425A2 (de) * 2017-11-22 2019-05-29 Gebr. Kemper GmbH + Co. KG Metallwerke Vorrichtung und verfahren zur überwachung der spülaktivitäten einer wasserleitung
CN208054943U (zh) * 2018-02-11 2018-11-06 广东万家乐燃气具有限公司 缺水保护装置及净水器
CN109343123A (zh) * 2018-12-14 2019-02-15 北京瀚卫高新技术有限公司 一种水流检测装置
CN210089799U (zh) * 2019-07-05 2020-02-18 合肥英唐电子有限公司 基于单片机ad检测的水流检测电路

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