KR19980029548U - Water level sensor of washing machine - Google Patents

Water level sensor of washing machine Download PDF

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Publication number
KR19980029548U
KR19980029548U KR2019960042612U KR19960042612U KR19980029548U KR 19980029548 U KR19980029548 U KR 19980029548U KR 2019960042612 U KR2019960042612 U KR 2019960042612U KR 19960042612 U KR19960042612 U KR 19960042612U KR 19980029548 U KR19980029548 U KR 19980029548U
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South Korea
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water
washing
tank
water level
sub
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KR2019960042612U
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Korean (ko)
Inventor
이암규
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배순훈
대우전자 주식회사
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Priority to KR2019960042612U priority Critical patent/KR19980029548U/en
Publication of KR19980029548U publication Critical patent/KR19980029548U/en

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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
    • 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
    • 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
    • G01F23/26—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 capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
    • 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

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

본 고안은 수조의 저면에 수압에 따라 승강되는 자성체를 직접 설치하고 자성체의 주위에 코일을 설치하여 자성체의 승강시 인덕턴스값의 변화로 수위가 감지되도록 함으로서, 구조를 간소화한 세탁기의 수위감지장치에 관한 것으로서, 특히 본체 내부에 수조와 세탁조가 설치되고 상기 세탁조의 내부에 세탁수가 급수되어 교반날개에 의해 휘저어짐에 있어서, 상기 수조 저면에 상기 세탁조와 연통되는 감지구멍이 형성되고 상기 감지구멍과 통하도록 상기 수조 저면에 부구실이 설치되며 상기 부구실 내부에 수압에 따라 승강되는 부구가 구비되고 상기 부구와 로드를 통하여 연결된 자성체가 구비되며 상기 자성체의 주위에 인덕턴스값의 변화에 따라 수위를 감지하는 코일이 설치된다.The present invention installs a magnetic material that is elevated in accordance with the water pressure on the bottom of the tank and a coil is installed around the magnetic material so that the water level can be detected by the change in inductance value when the magnetic material is raised and lowered. In particular, a water tank and a washing tank are installed inside the main body, and the washing water is supplied to the inside of the washing tank and agitated by stirring blades, so that a sensing hole communicating with the washing tank is formed on the bottom of the tank, and the sensing hole and the tub are formed. The sub-bed is installed on the bottom of the water tank, and the sub-ball is provided with a sub-elevation according to the water pressure in the sub-ball chamber, and a magnetic body connected through the rod and the rod is provided to detect the water level according to the change in inductance value around the magnetic body. Coil is installed.

Description

세탁기의 수위감지장치Water level sensor of washing machine

본 고안은 세탁기의 수위감지장치에 관한 것으로서, 더욱 상세하게는 수조 저면에 승강되는 자성체를 직접 설치하여 코일의 인덕턴스값의 변화에 따라 수위가 감지되도록 함으로서, 구조를 간소화한 세탁기의 수위감지장치에 관한 것이다.The present invention relates to a water level detection device of a washing machine, and more particularly, by installing a magnetic material that is directly elevated on the bottom of the water tank to detect the water level according to the change in the inductance value of the coil, to simplify the water level detection device of the washing machine It is about.

일반적으로 세탁기는 도 1에 도시된 바와 같이 직사각형의 본체(1) 내부에 일정량의 세탁수가 담수되는 수조(2)가 구비되고 걸이봉(2a)에 의해 본체(1)의 내부에 매달려 설치된다. 또한 수조(2) 내부에 원통형의 세탁조(3)가 회전 가능한 상태로 설치되고 이의 내부 바닥에 교반날개(4)가 정역회전 가능 토록 설치된다. 교반날개(4)는 세탁과정에서 정역회전 되는 것으로서, 세탁조(3) 내부로 급수된 세탁수를 휘저어 회전수류를 일으킨다. 이처럼 발생된 회전수류에 의해 빨래감이 서로 비벼지면서 세탁된다.In general, the washing machine is provided with a water tank 2 in which a predetermined amount of washing water is provided in a rectangular main body 1, and is suspended from the main body 1 by a hook rod 2a. In addition, the cylindrical washing tub 3 is installed inside the water tank 2 in a rotatable state, and the stirring blade 4 is installed on the inner bottom thereof so as to be capable of forward and reverse rotation. Stirring blade (4) is to be rotated forward and reverse in the washing process, to stir the wash water supplied into the washing tank (3) to produce a rotary water flow. The washing is rubbed and washed by the rotational flow generated in this way.

또한 수조(2)의 저면 중앙에 모터(5)로 회전되는 동력절환수단(6)이 설치된다. 동력절환수단(6)은 상부에 세탁축(6a)과 탈수축(6b)이 형성되며 세탁축(6a)은 교반날개(4)와 결합되고 탈수축(6b)은 세탁조(3)의 저면에 결합된다. 또한 수조(2)의 저면에 유출구(8)가 마련되고 유출구(8)와 호스(7a)로 연결된 수위감지센서(7)가 구비된다. 수위감지센서(7)는 세탁조(3) 내부로 급수되는 세탁수의 량을 조절하는 것으로서, 세탁조(3) 내부로 급수되는 세탁수가 수조(2)와 유출구(8) 쪽으로 흐른 다음 호스(7a)를 거쳐 수위감지센서(7) 쪽으로 전달된다. 이때 수위감지센서(7)는 수압의 변화에 따라 수위를 감지하게 된다.In addition, a power switching means 6 which is rotated by the motor 5 is installed at the center of the bottom surface of the water tank 2. The power switching means 6 has a washing shaft (6a) and a dehydration shaft (6b) is formed on the upper side, the washing shaft (6a) is combined with the stirring blade (4) and the dehydration shaft (6b) on the bottom of the washing tank (3) Combined. In addition, the outlet 8 is provided on the bottom surface of the water tank 2, and the water level sensor 7 connected to the outlet 8 and the hose 7a is provided. The water level sensor 7 adjusts the amount of washing water supplied into the washing tank 3, and the washing water supplied into the washing tank 3 flows toward the water tank 2 and the outlet 8, and then the hose 7a. It is transmitted toward the water level sensor (7) via. At this time, the water level sensor 7 detects the water level according to the change in the water pressure.

이처럼 구성된 종래의 세탁기는 세탁조(3) 내부에 빨래감이 담기고 세탁수가 급수된 상태에서 세탁이 진행된다. 세탁과정에서 모터(5)가 정역회전 되면 이의 회전력이 동력절환수단(6)으로 전달되고 동력절환수단(6)에서 감속된 다음 그 정역회전력이 세탁축(6a)을 통하여 교반날개(4) 쪽으로 전달된다. 이때 교반날개(4)가 정역회전 되면 세탁수가 회전수류를 일으키게 되고 회전수류에 의해 빨래감이 서로 비벼지면서 세탁이 진행된다. 또한 세탁과정에서 세탁조(3) 내부로 급수되면 이를 수위감지센서(7)가 감지하여 수위를 조절한다. 즉 세탁조(3) 내부로 급수되면 수위감지센서(7)가 호스(7a)를 통하여 수압을 감지하고 이에 따라 수위가 결정된다. 또한 세탁 완료후 세탁수가 배수된 다음 탈수가 진행된다. 탈수과정에서 모터(5)가 일방향으로 고속회전 되면 동력절환수단(6)에 의해 세탁축(6a)과 탈수축(6b)이 함께 고속 회전 되고 이때 세탁조(3)가 고속회전 된다. 세탁조(3)가 고속회전 되면 빨래감에 원심력이 작용되어 빨래감이 세탁조(3)의 내주면 쪽으로 퍼지게 되고 이때 빨래감에 묻은 세탁수가 탈수된다.In the conventional washing machine configured as described above, washing is carried out in the state in which the laundry is contained in the washing tub 3 and the washing water is supplied. In the washing process, when the motor 5 rotates forward and backward, its rotational force is transmitted to the power switching means 6 and decelerated by the power switching means 6, and then the reverse rotational power is passed through the washing shaft 6a toward the stirring blade 4. Delivered. At this time, when the stirring blade (4) is rotated forward and reverse, the washing water causes a rotational water flow, and the washing progresses as the laundry is rubbed against each other by the rotational water flow. In addition, when water is supplied into the washing tank 3 during the washing process, the water level sensor 7 detects and adjusts the water level. That is, when water is supplied into the washing tank 3, the water level sensor 7 detects the water pressure through the hose 7a, and the water level is determined accordingly. In addition, after the washing is completed, the washing water is drained and then dehydration proceeds. When the motor 5 rotates at a high speed in the dehydration process, the washing shaft 6a and the dewatering shaft 6b are rotated together by the power switching means 6 at a high speed, and the washing tank 3 is rotated at a high speed. When the washing tank 3 is rotated at a high speed, centrifugal force is applied to the washing feeling so that the washing feeling spreads toward the inner circumferential surface of the washing tank 3, and the washing water attached to the washing feeling is dehydrated.

그러나 종래의 세탁기는 수위감지센서(7) 쪽으로 수압을 인가시키기 위해 유출구(8)가 형성되고 호스(7a)가 구비됨으로 구조가 복잡한 등의 단점이 있다. 즉 유출구(8)는 수조(2)의 사출성형 과정에서 하부가 개방된다. 따라서 이를 밀폐하기 위해 마개(8a)를 초음파 등의 수단으로 융착해야되고 또한 수위감지센서(7)가 수조(2)의 상부에 위치된 상태에서 호스(7a)를 이용하여 유출구(8)와 수위감지센서(7)를 서로 연결시켜야 됨으로 조립성이 저하되는 등의 단점이 있다.However, the conventional washing machine has a disadvantage in that the outlet 8 is formed to apply water pressure toward the water level sensor 7, and the hose 7a is provided, which is complicated in structure. That is, the outlet 8 is opened in the lower part in the injection molding process of the water tank (2). Therefore, in order to seal it, the stopper 8a must be fused by means of an ultrasonic wave or the like, and the outlet 8 and the water level using the hose 7a in the state where the water level sensor 7 is located above the water tank 2. There is a disadvantage in that the assembling is deteriorated by having to connect the sensing sensors 7 to each other.

본 고안은 종래의 문제점을 감안하여 개발한 것으로서, 본 고안의 목적은 수조의 저면에 수압에 따라 승강되는 자성체를 직접 설치하고 자성체의 주위에 코일을 설치하여 자성체의 승강시 인덕턴스값의 변화로 수위가 감지되도록 함으로서, 구조를 간소화한 세탁기의 수위감지장치를 제공함에 있다.The present invention was developed in view of the conventional problems, and an object of the present invention is to directly install a magnetic material which is elevated according to water pressure on the bottom of the tank, and to install a coil around the magnetic material to change the water level by changing the inductance value of the magnetic material. By detecting the, to provide a water level detection device of the washing machine simplified structure.

도 1은 종래 세탁기의 단면도,1 is a cross-sectional view of a conventional washing machine,

도 2는 본 고안 세탁기의 단면도,2 is a cross-sectional view of the subject innovation washing machine,

도 3은 본 고안 수위감지장치의 단면도.Figure 3 is a cross-sectional view of the water level detecting device of the present invention.

도면의주요부분에대한부호설명Explanation of Signs of Major Parts of Drawings

10 - 본체, 11 - 수조,10-body, 11-tank,

12 - 세탁조, 13 - 교반날개,12-washing tub, 13-stirring blade,

20 - 감지구멍, 31 - 부구실,20-detection hole, 31-sub-room,

32 - 부구, 33 - 로드,32-float, 33-rod,

36 - 자성체, 37 - 코일.36-magnetic material, 37-coil.

상기 목적을 달성하기 위하여 본 고안은 본체 내부에 수조와 세탁조가 설치되고 상기 세탁조의 내부에 세탁수가 급수되어 교반날개에 의해 휘저어짐에 있어서, 상기 수조 저면에 상기 세탁조와 연통되는 감지구멍이 형성되고 상기 감지구멍과 통하도록 상기 수조 저면에 부구실이 설치되며 상기 부구실 내부에 수압에 따라 승강되는 부구가 구비되고 상기 부구와 로드를 통하여 연결된 자성체가 구비되며 상기 자성체의 주위에 인덕턴스값의 변화에 따라 수위를 감지하는 코일이 설치된 특징이 있다.In order to achieve the above object, the present invention is provided with a water tank and a washing tank inside the main body, and the washing water is supplied to the inside of the washing tank and agitated by stirring blades, so that a sensing hole communicating with the washing tank is formed on the bottom of the water tank. A sub-chamber is installed on the bottom surface of the water tank so as to communicate with the sensing hole, and a sub-ball is provided in the sub-chamber in accordance with the water pressure, and a magnetic body connected through the rod and the rod is provided. Accordingly, there is a feature that the coil is installed to detect the water level.

이하 본 고안의 바람직한 실시예를 첨부 도면에 따라 상세히 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 고안 세탁기의 단면도 로서, 상부가 개방된 직사각형의 본체(10) 내부에 수조(11)가 걸이봉(16)을 통하여 매달려 설치되고, 수조(11) 내부에 세탁수와 빨래감이 담기는 세탁조(12)가 회전 가능토록 설치된다. 또한 세탁조(12)의 내부에 교반날개(13)이 설치되고 수조(11) 저면에 결합된 동력절환수단(15)의 세탁축(15a)에 의해 정역회전 되면서 회전수류를 일으킨다. 또한 수조(11) 저면에 동력절환수단(15)을 작동시키는 모터(14)가 설치되고 동력절환수단(15)의 탈수축(15b)은 세탁조(12)의 저면 중앙에 결합되어 탈수시 이를 일방향으로 고속 회전 시킨다.Figure 2 is a cross-sectional view of the washing machine of the present invention, the tank 11 is installed hanging through the hook rod 16 inside the rectangular main body 10 of the open top, the washing water and laundry in the tank 11 The washing tank 12 is installed to be rotatable. In addition, the stirring vane 13 is installed inside the washing tank 12 and rotates forward and backward by the washing shaft 15a of the power switching means 15 coupled to the bottom of the water tank 11 to generate a rotating water flow. In addition, a motor 14 for operating the power switching means 15 is installed at the bottom of the water tank 11, and the dehydration shaft 15b of the power switching means 15 is coupled to the center of the bottom surface of the washing tank 12 so that it is dehydrated in one direction. Rotate at high speed.

도 3은 본 고안 수위감지장치의 단면도 로서, 수조(11)의 저면 일측에 감지구멍(20)이 형성되고 이와 결합되어 수위를 감지하는 수위감지수단(30)이 구비된다. 수위감지수단(30)은 감지구멍(20)과 결합되는 부구실(31)과 이와 연통되는 자성체실(35)로 분리되고 부구실(31)에는 수압에 따라 하강되는 부구(32)가 설치된다. 또한 부구(32)는 자성체실(35) 쪽으로 연장된 로드(33)가 구비되며 로드(33)의 하단이 자성체실(35) 쪽으로 관통된 상태에서 이의 단부에 자성체(36)가 결합된다. 또한 로드(33)의 외주면에 스프링(34)이 설치되어 부구(32)를 떠받친다. 즉 세탁수가 감지구멍(20)을 따라 부구(32) 쪽으로 인가되면 수압에 의해 스프링(34)이 하강되고 이때 자성체(36)가 자성체실(35)을 따라 승강된다. 또한 자성체실(35)의 외주연에 코일(37)이 설치되어 자성체(36)의 위치변화에 따라 코일(37)의 인덕턴스값이 변하면서 수위가 감지된다.3 is a cross-sectional view of the water level detecting device of the present invention, in which a sensing hole 20 is formed at one side of the bottom surface of the water tank 11 and is coupled to the water level detecting means 30 to detect the water level. The water level detecting means 30 is divided into a sub-chamber 31 coupled with the sensing hole 20 and a magnetic body 35 in communication therewith, and the sub-chamber 31 is provided with a sub-ball 32 lowered according to water pressure. . In addition, the float 32 is provided with a rod 33 extending toward the magnetic chamber 35, the magnetic body 36 is coupled to its end in the state in which the lower end of the rod 33 is penetrated toward the magnetic chamber 35. In addition, a spring 34 is installed on the outer circumferential surface of the rod 33 to support the floats 32. That is, when the washing water is applied toward the float 32 along the sensing hole 20, the spring 34 is lowered by the hydraulic pressure, and the magnetic body 36 is elevated along the magnetic body chamber 35. In addition, the coil 37 is installed on the outer circumference of the magnetic body chamber 35 and the water level is sensed as the inductance value of the coil 37 changes as the position of the magnetic body 36 changes.

이처럼 구성된 본 고안은 수조(11) 저면에 형성된 감지구멍(20)에 수위감지수단(30)의 부구실(31)이 나사못(38)에 의해 결합되고 또한 부구실(31)에 부구(32)가 스프링(34)에 의해 떠받쳐진 상태로 설치된다. 또한 부구(32) 하부의 로드(33) 단부에 자성체(36)가 설치되고 자성체(36)의 주위로 코일(37)이 감긴다. 이처럼 조립되는 본 고안은 세탁조(12)의 내부에 빨래감이 담기고 세탁수가 급수된다. 또한 세탁수가 급수되면 수조(11)를 통하여 감지구멍(20)으로 세탁수가 흐르고 또한 감지구멍(20)과 연결된 부구실(32) 내부로 세탁수가 유입된다. 이때 수압에 의해 스프링(34)이 압축되면서 부구(32)가 하강되고 이와 로드(33)를 통하여 연결된 자성체(36)가 직접 하강된다. 또한 자성체(36)가 하강되면 이의 주위로 설치된 코일(37)에 자장변화가 일어나고 이의 인덕턴스값이 변하면서 수위가 감지된다. 또한 설정된 수위에 도달되면 급수가 중단된 다음 교반날개(13)가 정역회전 된다.According to the present invention configured as described above, the sub-chamber 31 of the water level sensing means 30 is coupled to the sensing hole 20 formed in the bottom of the water tank 11 by the screw 38 and the sub-ball 32 in the sub-chamber 31. Is installed in a supported state by the spring (34). In addition, the magnetic body 36 is installed at the end of the rod 33 under the sub-ball 32 and the coil 37 is wound around the magnetic body 36. The present invention is assembled as described above is put the laundry in the washing tank 12 and the wash water is supplied. In addition, when the wash water is supplied, the wash water flows into the sensing hole 20 through the water tank 11, and the wash water flows into the sub-chamber 32 connected to the sensing hole 20. At this time, as the spring 34 is compressed by the hydraulic pressure, the buoy 32 is lowered, and the magnetic body 36 connected thereto through the rod 33 is directly lowered. In addition, when the magnetic material 36 is lowered, a magnetic field change occurs in the coil 37 installed around it, and the water level is sensed as its inductance value changes. In addition, when the water level is reached, the water supply is stopped and then the stirring blade 13 is rotated forward and backward.

즉 모터(14)가 회전되면 이의 회전력이 동력절환수단(15)을 타고 세탁축(15a)으로 전달되고 이때 정역회전 되는 세탁축(15a)에 의해 교반날개(13)이 정역회전 되면서 회전수류가 발생된다. 또한 회전수류에 의해 빨래감이 서로 비벼지며 세탁이 진행되고, 세탁완료후 탈수가 진행된다. 즉 모터(14)의 구동으로 동력절환수단(15)이 작동되면 세탁축(15a)과 탈수축(15b)이 고속으로 회전되고 이때 세탁조(12)가 일방향으로 고속회전 되면서 빨래감이 탈수된다.That is, when the motor 14 is rotated, its rotational force is transmitted to the washing shaft 15a by the power switching means 15, and the stirring blade 13 is reversely rotated by the washing shaft 15a, which is rotated forward and backward, thereby rotating water flow. Is generated. In addition, washing is rubbed with each other by rotating water flow, and washing proceeds. After washing, dehydration proceeds. That is, when the power switching means 15 is driven by the driving of the motor 14, the washing shaft 15a and the dewatering shaft 15b are rotated at a high speed. At this time, the washing tank 12 is rotated at a high speed in one direction to wash the clothes.

이상에서와 같이 본 고안에 따르면 수조 저면에 감지구멍이 형성되고 이와 연통되는 부구실이 수조의 저면에 결합된다. 또한 부구실의 내부에 수압을 받는 부구가 설치되고 부구의 하부에 자성체가 설치되어 승강된다. 또한 자성체 외주연에 코일이 설치되어 자성체의 승강시 코일의 인덕턴스값이 변화됨과 동시에 수위가 감지된다. 따라서 수위감지수단을 구성하는 코일과 자성체가 수조의 저면에 직접 설치됨으로 별도의 호스를 구비할 필요가 없어 조립성이 향상되고 또한 부품이 감소되는 등의 효과가 있다.As described above, according to the present invention, a sensing hole is formed in the bottom of the water tank, and the subsidiary chamber communicating with the water is coupled to the bottom of the water tank. In addition, a buoy receiving water pressure is installed in the buccal chamber, and a magnetic material is installed and lowered at the lower portion of the buoy. In addition, the coil is installed on the outer periphery of the magnetic material, the inductance value of the coil changes when the magnetic material is raised and lowered and the water level is sensed. Therefore, since the coil and the magnetic body constituting the water level sensing means are directly installed on the bottom of the water tank, there is no need to provide a separate hose, thereby improving assembly performance and reducing parts.

Claims (1)

본체(10) 내부에 수조(11)와 세탁조(12)가 설치된 세탁기에 있어서,In the washing machine provided with the water tank 11 and the washing tank 12 in the main body 10, 상기 수조(11) 저면에 상기 세탁조(12)와 연통되는 감지구멍(20)이 형성되고 상기 감지구멍(20)과 통하도록 상기 수조(11) 저면에 부구실(31)이 설치되며 상기 부구실(31) 내부에 수압에 따라 승강되는 부구(32)가 구비되고 로드(33)를 통하여 상기 부구(32) 연결된 자성체(36)가 구비되며 상기 자성체(36)의 주위에 인덕턴스값의 변화에 따라 수위를 감지하는 코일(37)이 설치됨을 특징으로하는 세탁기의 수위감지장치.A sensing hole 20 is formed in the bottom surface of the water tank 11 to communicate with the washing tank 12, and an auxiliary chamber 31 is installed on the bottom surface of the water tank 11 so as to communicate with the sensing hole 20. 31 is provided with a buoy 32 that is elevated in accordance with the hydraulic pressure therein, and a magnetic body 36 connected to the buckle 32 through a rod 33 is provided in accordance with the change in inductance value around the magnetic body 36. Water level detecting device of the washing machine, characterized in that the coil 37 for detecting the water level is installed.
KR2019960042612U 1996-11-27 1996-11-27 Water level sensor of washing machine KR19980029548U (en)

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