KR100500887B1 - Apparatus for generating steam in Drum-type washing machine and method of the same - Google Patents
Apparatus for generating steam in Drum-type washing machine and method of the same Download PDFInfo
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- KR100500887B1 KR100500887B1 KR10-2003-0056267A KR20030056267A KR100500887B1 KR 100500887 B1 KR100500887 B1 KR 100500887B1 KR 20030056267 A KR20030056267 A KR 20030056267A KR 100500887 B1 KR100500887 B1 KR 100500887B1
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- steam
- water
- common electrode
- steam generator
- washing machine
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- 238000005406 washing Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 119
- 238000001514 detection method Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 239000012212 insulator Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 239000003599 detergent Substances 0.000 description 8
- 238000012850 discrimination method Methods 0.000 description 7
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000012356 Product development Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- D06F39/40—Steam generating arrangements
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
Abstract
본 발명은 드럼 세탁기의 증기 발생 방법 및 그 장치에 관한 것으로서, 상호간에 길이가 다른 공통전극, 제 1, 2 감지전극을 증기발생장치내에 설치하여, 공통전극과 제 1 감지전극에 증기발생용수가 접촉되는 경우에는, 소정의 하한 수위로 판별하여 히터를 오프(OFF)시켜 증기발생이 이루어지지 않도록 하며, 상기 공통전극과, 제 1, 2감지 전극 모두에 증기발생용수가 접촉되면, 증기발생용수의 공급을 중단하고, 그 하한 수위로 하강될 때까지 설정시간동안 계속적으로 히터를 가열하여 증기를 발생시킴으로써, 증기압에 의해 영향을 받지 않고도 전술한 간단한 방법으로 증기발생장치내의 수위를 판별할 수 있어, 종래보다 상대적으로 증기발생장치의 제조 비용을 절감하고, 더불어 그 크기도 줄일 수 있게 된다.The present invention relates to a steam generating method and apparatus for a drum washing machine, wherein a common electrode having different lengths and first and second sensing electrodes are installed in a steam generator, and steam generation water is applied to the common electrode and the first sensing electrode. In case of contact, the heater is turned off at a predetermined lower limit level to prevent steam from being generated, and when steam generating water comes into contact with both the common electrode and the first and second sensing electrodes, the steam generating water By stopping the supply of water and heating the heater continuously for a set time until the water level falls to the lower limit, the water level in the steam generator can be determined by the simple method described above without being affected by the steam pressure. In addition, it is possible to reduce the manufacturing cost of the steam generator relative to the prior art, and also to reduce the size thereof.
Description
본 발명은, 세탁수의 낭비를 최대한으로 방지하면서 증기압에 영향을 받지 않는 소정의 수위판별방법을 사용해, 저렴한 비용과, 비교적 작은 크기로 제조할 수 있는, 드럼 세탁기의 증기발생장치 및 그 방법에 관한 것이다.The present invention relates to a steam generator and a method for a drum washing machine, which can be manufactured at a low cost and relatively small in size by using a predetermined water level discrimination method that is not affected by steam pressure while maximizing waste of washing water. It is about.
일반적으로, 세탁기는 세탁, 헹굼 및 탈수행정을 수행하여 세탁물을 세탁하는 기계장치로서, 세탁방식에 따라 펄세이터식, 교반식, 드럼식 등으로 구분된다.In general, a washing machine is a machine for washing laundry by performing washing, rinsing, and dehydrating strokes. The washing machine is classified into a pulsator type, a stirring type, a drum type, and the like according to a washing method.
최근, 세탁기는 세탁 성능뿐만 아니라, 사용의 편리성이 매우 중요한 제품 의 구매 요소가 되고 있으며, 이에 따라 사용의 편리성을 증대시키기 위한 제품 개발이 가속화되고 있는데, 특히 요즘에는 전술한 세탁방식중에서 세탁시 옷감을 상하지 않게 하는데 우수한 드럼식이 주로 사용된다.Recently, a washing machine has become a purchase element of a product in which not only washing performance but also convenience of use is very important, and thus, product development for increasing convenience of use has been accelerated. Excellent drum type is used to avoid damaging the fabric.
도 1은 이러한 드럼식이 적용된 일반적인 드럼 세탁기의 개략적인 단면도로서, 드럼 세탁기(1)는 세탁물을 세탁하기 위해 내면에 다수개의 리프트(5)를 형성하고 있는 드럼(4)과; 상기 드럼(4)을 회전시키기 위해 상기 드럼(4)에 결합되는 회전축(3)과; 회전력을 발생하고 발생한 회전력으로 상기 회전축(3)을 회전시키는 모터(6)와; 상기 드럼(4) 외측에 결합되는 터브(2)로 구성된다.1 is a schematic cross-sectional view of a general drum washing machine to which this drum type is applied, the drum washing machine 1 comprising: a drum 4 having a plurality of lifts 5 formed on an inner surface thereof for washing laundry; A rotating shaft (3) coupled to the drum (4) for rotating the drum (4); A motor 6 for generating a rotational force and rotating the rotational shaft 3 with the generated rotational force; It consists of a tub (2) coupled to the outside of the drum (4).
이렇게 구성된 드럼세탁기는, 먼저, 드럼 세탁기(1)의 드럼(4)에 세탁물을 투입한 후, 사용자 선택에 따라 세탁 버튼이 눌러지면 터브(2)로 세탁수가 급수되며, 급수된 세탁수는 터브(2)하부의 히터(미도시)에 의해 설정 온도까지 가열되고, 이렇게 가열된 세탁수로 드럼(4)내의 세탁물을 포적심시킨다.The drum washing machine configured as described above, first, the laundry is put into the drum (4) of the drum washing machine 1, the washing water is supplied to the tub (2) when the washing button is pressed according to the user's selection, the wash water is tub (2) The laundry in the drum 4 is filled with the washing water heated by the lower heater (not shown) to the set temperature and thus heated.
그리고, 세탁 버튼이 눌러짐에 따라 구동된 모터(6)가 풀리 및 벨트와 연동하여 회전축(3)을 회전시키고, 이 회전축(3)의 회전이 드럼(4)을 정, 역회전시키면서, 더불어 드럼(4) 내면에 형성된 다수개의 리프트(5)가 세탁물을 상부로 올리고, 떨어뜨리면서 발생한 충격력으로, 드럼(4) 내부의 세탁물을 세탁할 수 있게 된다.Then, as the washing button is pressed, the driven motor 6 rotates the rotary shaft 3 in conjunction with the pulley and the belt, and the rotation of the rotary shaft 3 rotates the drum 4 forward and backward, A plurality of lifts (5) formed on the inner surface of the drum (4) raises the laundry to the top, the impact force generated by dropping, it is possible to wash the laundry inside the drum (4).
이와 같은 세탁 행정을 수행하는 드럼 세탁기는, 세탁물의 손상이 거의 없고, 세탁물이 서로 엉키지 않으며, 두드리고 비벼 빠는 세탁효과를 낼 수 있어, 최근 들어 널리 사용되고 있다.Drum washing machines which perform such a washing stroke have almost no damage to the laundry, the laundry does not get tangled with each other, and can give a washing effect to be pounded and rubbed, and have been widely used in recent years.
하지만, 이러한 드럼 세탁기의 경우, 세탁수를 가열시키기 위해 터브 하부에, 전기 히터를 위치시키기 위한 공간을 별도로 두어야 하는데, 세탁 행정시 이러한 공간으로 잔류 세제가 모이기 쉽고, 그 공간에도 세탁수를 채워야 하기 때문에 불필요하게 세탁수가 낭비되며, 이 세탁수를 가열하기 위해 많은 전력이 필요하다는 문제점이 있었다.However, in such a drum washing machine, a space for placing an electric heater should be provided under the tub to heat the washing water, and the detergent may easily collect in the space during the washing stroke, and the washing water should be filled in the space. Therefore, the washing water is unnecessarily wasted, and there is a problem that a lot of power is required to heat the washing water.
그래서, 본 출원인은 이러한 문제점을 해소시키기 위하여, 설정 수위만큼 물이 공급되면, 그 공급된 물을 가열해 증기를 발생시키고, 그 발생시킨 증기를 이용해 드럼 내부의 세탁물을 가열하거나 포적심시키는 소정의 증기발생장치를 제안한 바 있다.Thus, in order to solve such a problem, the present applicant, when water is supplied by the set level, a predetermined amount of heating the supplied water to generate steam, and using the generated steam to heat or fill the laundry inside the drum A steam generator has been proposed.
이러한, 증기발생장치는, 설정 수위를 측정하기 위해서, 소정의 수위판별방법, 예컨대, 도 2에 도시된 바와 같은 수위판별방법을 사용해 왔는데, 이에 대해 도 2를 참조하여 간략히 설명한다.In order to measure the set water level, the steam generator has used a predetermined water level discrimination method, for example, a water level discrimination method as shown in FIG. 2, which will be briefly described with reference to FIG. 2.
도 2에 도시된 바와 같이, 일반적인 수위판별방법은, 드럼 내부에 채워진 세탁수의 수압에 따라 가변되는 주파수를 측정하여 수위를 판별해왔다. 즉, 회전축(20)에 장착된 부구(21)가 세탁수의 수위에 따라 상하 방향으로 이동하면, 그 이동에 따라 부구(21) 내부의 코어(22)와 소정의 고정체(23, 24)에 연결된 코일(25, 26) 사이에 자기장이 가변되고, 이 가변된 자기장에 대응되는 주파수를 측정함으로써 수위를 판별해 왔다.As shown in Figure 2, the general level determination method has been determined by measuring the frequency variable according to the water pressure of the washing water filled in the drum. That is, when the float 21 mounted on the rotary shaft 20 moves up and down in accordance with the water level of the wash water, the core 22 and the predetermined fixing bodies 23 and 24 inside the float 21 according to the movement. The magnetic field is variable between the coils 25 and 26 connected to it, and the water level has been determined by measuring the frequency corresponding to this variable magnetic field.
하지만, 이러한 수위판별방법을, 전술한 증기발생장치에 적용하게 되면, 물을 가열할 때 증기압이 발생하여 그 증기압으로 인해 정확한 주파수를 측정할 수가 없으며, 특히, 전술한 수위판별방법을 이용하기 위해서는, 그 증기발생장치내에 상기의 고정체나 부구 등과 같은 다수의 부속물들을 장착해야 하기 때문에, 증기발생장치의 제조시에 상당한 제조 비용이 필요하고, 그 크기도 커지게 되는 문제점이 있다.However, if the above-described water level discrimination method is applied to the above-described steam generator, steam pressure is generated when water is heated, and thus the exact frequency cannot be measured due to the steam pressure. Since a large number of accessories, such as the fixture or the mouth, must be mounted in the steam generator, a significant manufacturing cost is required in manufacturing the steam generator, and there is a problem that the size thereof becomes large.
따라서, 증기압에 의한 영향을 받지 않는 소정의 수위판별방법을 사용해, 제조 비용을 절감하면서, 그 크기도 줄일 수 있는, 개선된 증기발생장치 및 그 방법이 필요하다.Therefore, there is a need for an improved steam generator and method that can reduce its size while reducing manufacturing costs by using a predetermined level determination method that is not affected by steam pressure.
이에 본 발명은 상기한 필요성을 만족시키기 위해 개발된 것으로, 증기압에 의해 영향을 받지 않는 소정의 수위판별방법을 이용해, 제조 비용을 절감하면서, 그 크기도 줄일 수 있는 드럼 세탁기용 증기발생장치 및 그 방법을 제공하는데 있다.Accordingly, the present invention was developed to satisfy the above needs, by using a predetermined water level determination method that is not affected by the steam pressure, while reducing the production cost, the steam generator for drum washing machine and its size can be reduced To provide a method.
이러한 목적에 따라 본 발명은, 상호간에 길이가 다른 공통전극, 제 1, 2 감지전극을 증기발생장치내에 설치하여, 공통전극과 제 1, 2감지전극 모두에 물이 접촉된 경우에는 소정의 상한 수위로 판별하여 증기를 발생시키고, 공통전극과 제 1 감지전극에만 물이 접촉된 경우에는, 소정의 하한 수위로 판별하여 증기 발생을 정지시키도록 함으로써, 증기압에 의한 영향을 받지 않고도 증기발생장치내의 수위를 측정할 수 있도록 하며, 이러한 비교적 간단한 수위판별방법을 통해 그 증기발생장치의 제조 비용을 절감하고, 더불어 그 크기도 줄이고자 한다.In accordance with this object, the present invention provides a common upper electrode and first and second sensing electrodes having mutually different lengths in a steam generator, and has a predetermined upper limit when water is brought into contact with both the common electrode and the first and second sensing electrodes. When water is generated by judging by the water level, and water only comes into contact with the common electrode and the first sensing electrode, it is determined by a predetermined lower limit water level to stop steam generation, thereby preventing steam from being affected by the vapor pressure. It is possible to measure the water level and to reduce the manufacturing cost of the steam generator and reduce its size through this relatively simple level determination method.
이하, 첨부된 도면을 참조하여 본 발명을 살펴보면 다음과 같다.Hereinafter, the present invention will be described with reference to the accompanying drawings.
먼저, 본 발명을 설명하기에 앞서 본 발명의 증기발생장치가 적용된 드럼 세탁기에 대해 도 3을 참조하여 설명한다.First, the drum washing machine to which the steam generator of the present invention is applied will be described with reference to FIG. 3 before explaining the present invention.
상기 도 3에 도시된 바와 같이, 본 발명이 적용된 드럼 세탁기는 세탁물을 수용하는 드럼(300); 상기 드럼(300) 내부로, 세탁수를 급수하는 유입관(310)과 세제를 공급하는 세제박스(320); 및 증기를 공급하는 증기발생장치(330); 상기 증기발생장치(330)에서 발생된 증기를 역류방지용 분지장치(340)를 통하여 상기 드럼(300) 내로 분사시키는 분사노즐(350); 상기 세탁수를 드럼(300) 외부로 배출시키는 유출관(360)과; 상기 유출관(360)에서 배출한 세탁수를 펌핑하여 순환수 유로를 통하여 상기 역류방지용 분지장치(340)로 순환시키는 순환 펌프(370)와; 상기 드럼(300), 유입관(310), 세제박스(329), 증기발생장치(330), 분사노즐(350), 배수관(360)과 순환 펌프(370)를 감싸는 외관 케이스(380)로 구성된다.As shown in FIG. 3, the drum washing machine to which the present invention is applied includes: a drum (300) for receiving laundry; Into the drum 300, the inlet pipe 310 for supplying the wash water and the detergent box 320 for supplying a detergent; And a steam generator 330 for supplying steam; An injection nozzle (350) for injecting steam generated by the steam generator (330) into the drum (300) through a backflow prevention branching device (340); An outlet pipe 360 discharging the washing water to the outside of the drum 300; A circulation pump 370 for pumping the washing water discharged from the outflow pipe 360 and circulating the reverse flow prevention branch apparatus 340 through the circulation water flow path; The drum 300, the inlet pipe 310, detergent box 329, steam generator 330, injection nozzle 350, the drain pipe 360 and the outer case 380 surrounding the circulation pump 370 do.
이렇게 구성되어 본 발명에 적용되는 드럼세탁기는, 사용자가 소정의 증기 세탁 동작 버튼을 누르면, 세탁기의 급수밸브가 개방되어 세제박스(320)내의 세제와 함께 세탁에 필요한 소정의 수위까지 급수가 된다. 그 후, 급수가 완료되면 급수밸브가 닫히며, 순환펌프(370)가 동작되고, 세제를 용해하기 위해 기설정된 시간동안 물순환이 이루어지며 순환이 종료된다.The drum washing machine configured as described above is applied to the present invention, when the user presses a predetermined steam washing operation button, the water supply valve of the washing machine is opened to supply water to a predetermined level required for washing together with the detergent in the detergent box 320. Then, when the water supply is completed, the water supply valve is closed, the circulation pump 370 is operated, the water circulation is made for a predetermined time to dissolve the detergent and the circulation ends.
그 후, 본 발명에 따른 증기발생장치(330) 내부로 설정 수위까지 증기발생용수가 공급되면, 그 공급된 증기발생용수를 히터(미도시)를 통해 가열시켜 증기로 변환하고, 이렇게 변환된 증기를 상기 증기발생장치(330)의 스팀저장공간에 모아 일정압력이상이 되면, 분사노즐(350)을 통하여 세탁기의 드럼(300) 내부로 증기를 분사시키는데, 이하에서는 본 발명에 따른 증기발생장치에 대해 도 4를 참조하여 좀 더 상세히 설명하도록 한다.Thereafter, when the steam generating water is supplied to the inside of the steam generator 330 according to the present invention to a predetermined level, the supplied steam generating water is heated by a heater (not shown) to be converted into steam, and the steam thus converted When it is collected in the steam storage space of the steam generating device 330 or more than a predetermined pressure, to inject steam into the drum 300 of the washing machine through the injection nozzle 350, in the steam generator according to the present invention This will be described in more detail with reference to FIG. 4.
상기 도 4는 본 발명에 따른 증기발생장치의 바람직한 실시예를 도시한 도면이다.4 is a view showing a preferred embodiment of the steam generating apparatus according to the present invention.
<실시예><Example>
상기 도 4에 도시된 바와 같이, 본 발명에 따른 드럼 세탁기용 증기발생장치(330)는, 상부가 개방되고, 내부에 히터(331)가 배선되며, 증기 배출유로(->)가 내부에서 외부로 관통되는 제 1 용기(332); 일영역에 관통 영역이 형성되며, 하부는 개방되고, 일측면에 증기발생용수가 공급되는 급수구(333)가 형성되며, 외부로부터 밀폐된 공간이 되도록, 상기 제 1 용기(332)와 결합되는 제 2 용기(334); 상기 제 2 용기(334)의 관통 영역에 장착되어 상기 급수구(333)를 통해 급수되는 증기발생용수의 수위를 감지하는 수위감지센서(335)로 이루어진다.As shown in FIG. 4, the steam generator 330 for a drum washing machine according to the present invention has an open top, a heater 331 is wired therein, and a steam discharge passage (->) is internally external. A first container 332 which penetrates into; A through area is formed in one area, a lower part is opened, and a water supply port 333 through which steam generation water is supplied is formed on one side thereof, and is coupled to the first container 332 so as to be a closed space from the outside. Second container 334; The water level sensor 335 is installed in the through area of the second container 334 and detects the level of the steam generating water supplied through the water supply port 333.
특히, 상기 수위감지센서(335)는, 상호간에 길이가 상이한 제 1, 2 감지 전극(S1, S2) 및, 공통 전극(S0)과, 이러한 제 1, 2 감지 전극(S1, S2)과 공통 전극(S0) 각각을 전기적으로 절연되게 구분하여 결착시키는 절연체(S3)를 포함하여 이루어진다.In particular, the water level sensor 335 is common with the first and second sensing electrodes S1 and S2 and the common electrode S0 and the first and second sensing electrodes S1 and S2 having different lengths. It comprises an insulator (S3) for each of the electrodes (S0) to be electrically insulated and bound.
그리고, 상기 공통전극(S0), 제 1, 2 감지전극(S1, S2)은 각각의 단부가 동일한 선상에 위치시킬 때, 공통전극(S0)의 길이가 가장 길고, 제 1 감지 전극(S1)의 길이가 가장 짧으며, 제 2 감지 전극(S2)의 길이는 상기 공통전극(S0)의 길이와 제 2 감지 전극(S2) 길이의 사이에 해당하는 값을 가지는 것을 특징으로 한다.In addition, the common electrode S0 and the first and second sensing electrodes S1 and S2 have the longest length of the common electrode S0 when each end thereof is positioned on the same line, and the first sensing electrode S1. Is the shortest, and the length of the second sensing electrode S2 has a value corresponding to the length of the common electrode S0 and the length of the second sensing electrode S2.
이러한 수위감지센서가 장착된 증기발생장치는, 종래와 달리 증기압에 의해 영향을 받지 않고도 비교적 손쉽게 수위를 판별하여, 증기를 발생할 수 있게 되는데, 그 수위판별을 이용한 증기 발생 방법은 다음과 같다.The steam generator equipped with the water level sensor is capable of generating steam by determining the water level relatively easily without being affected by the steam pressure, unlike the conventional art. The steam generation method using the water level discrimination is as follows.
먼저, 사용자 키 조작에 의한 증기발생 명령의 입력에 따라, 상기 급수구(333)를 통해 증기발생장치(300)내로 증기발생용수가 공급되면, 그 공급되는 증기발생용수로 인해 증기발생장치(300)내의 수위가 상승되고, 상승되는 수위에 따라, 증기발생용수가 상기 공통전극(S0)과 제 1 감지전극(S1)에 접촉된다.First, when steam generation water is supplied into the steam generator 300 through the water supply port 333 according to the input of the steam generation command by the user key operation, the steam generator 300 due to the supplied steam generation water The water level inside is raised, and the steam generating water contacts the common electrode S0 and the first sensing electrode S1 according to the rising water level.
이 때, 즉, 상기 증기발생용수가 공통전극(S0)과 제 1 감지전극(S1)에 접촉될 때, 발생되는 전압을 측정함으로써 이 측정한 전압을 이용해 현재 증기발생장치(300)내의 수위가 미리 설정된 소정의 하한 수위임을 판별할 수 있게 되는데, 측정한 전압을 이용해 하한 수위를 판별하는 양태에 대해서는 후술한다.At this time, that is, when the steam generating water is in contact with the common electrode S0 and the first sensing electrode S1, the water level in the current steam generator 300 is increased by using the measured voltage. It is possible to determine that it is a predetermined lower limit level. An aspect of determining the lower limit level using the measured voltage will be described later.
상기 하한 수위는 히터과열방지를 위한 히터보호수위로서, 이 하한 수위 이하일 경우에는 히터 보호를 위해 히터(331)가 오프(OFF)되어 증기발생이 이루어지지 않도록 한다. The lower limit level is a heater protection level for preventing overheating of the heater. When the lower limit level is lower than or equal to the lower limit level, the heater 331 is turned off to protect the heater so that steam is not generated.
한편, 상기 급수구(333)를 통해 증기발생장치(300)내로 증기발생용수가 계속적으로 공급되면 수위가 계속해서 상승한다.On the other hand, if the steam generation water is continuously supplied into the steam generator 300 through the water inlet 333, the water level continues to rise.
그래서, 상기 증기발생용수가 상기 공통전극(S1)과 제 1, 2감지전극(S1, S2) 모두에 접촉되게 되는데, 이 때 발생되는 전압을 측정하고, 측정한 전압을 이용해 현재 증기발생장치(300)내의 수위가 미리 설정된 소정의 상한 수위임을 판별할 수 있게 된다.Thus, the steam generating water is in contact with both the common electrode (S1) and the first and second sensing electrodes (S1, S2), by measuring the voltage generated at this time, using the current voltage generator ( It is possible to determine that the water level within 300 is a predetermined upper limit water level.
상기 상한 수위는, 증기발생장치(300)내에서 증기발생용수를 공급하여 상승시킬 수 있는 가장 높은 레벨의 수위로서, 상기 상한 수위에 도달하면, 상기 급수구(333)에서 급수되는 증기발생용수의 공급을 중단하게 되며, 상기 하한 수위 이하로 하강될 때까지 설정시간동안 계속적으로 히터(331)를 가열시켜 증기를 발생한다. The upper limit level is the level of the highest level that can be increased by supplying the steam generating water in the steam generating device 300, and when the upper limit level is reached, the steam generating water supplied from the water supply port 333 The supply is stopped, and the heater 331 is continuously heated for a predetermined time until steam falls below the lower limit level to generate steam.
그리고, 이렇게 발생된 증기는, 제 2 용기(334) 상단의 증기 저장 공간, 즉, 홈에 모아져서, 일정압력 이상이 되면, 증기 배출유로(--->)를 통하여 세탁기의 드럼 내부로 분사되며, 이렇게 분사된 증기는 드럼 내부의 세탁물을 포적심시키거나 가열하게 된다.Then, the generated steam is collected in the vapor storage space of the upper end of the second container 334, that is, the groove, and when the pressure is above a certain pressure, the steam is injected into the drum of the washing machine through the steam discharge passage (--->) The sprayed steam will coat or heat the laundry inside the drum.
이와 같이, 본 발명에 따른 증기발생장치는, 상호간에 길이가 다른 공통전극, 제 1, 2 감지전극을 증기발생장치내에 설치하여, 공통전극과 제 1 감지전극에 증기발생용수가 접촉되는 경우에는, 소정의 하한 수위로 판별하여 그 때까지는 히터를 오프시켜 증기발생이 이루어지지 않도록 하고, 상기 공통전극과, 제 1, 2감지 전극 모두에 증기발생용수가 접촉되면, 증기발생용수의 공급을 중단하며, 그 하한 수위로 하강될 때까지 설정시간동안 계속적으로 히터를 가열하여 증기를 발생시킴으로써, 증기압에 의해 영향을 받지 않고도 전술한 방법으로 증기발생장치내의 수위를 판별할 수 있어, 이를 통해 증기 발생을 제어할 수 있을 뿐만 아니라, 종래보다 상대적으로 적은 제조 비용으로, 그리고, 소형의 크기로 제조할 수 있게 된다. As described above, the steam generator according to the present invention is provided with a common electrode having different lengths, and first and second sensing electrodes in the steam generator, and the steam generating water contacts the common electrode and the first sensing electrode. If the steam generating water is in contact with the common electrode and the first and second sensing electrodes, the supply of steam generating water is stopped. By heating the heater continuously for a set time until the water level is lowered to the lower limit level, the water level in the steam generator can be determined by the above-described method without being affected by the steam pressure, thereby generating steam. Not only can be controlled, but also can be manufactured at a relatively low manufacturing cost and a small size.
다음으로는, 도 5a와 도 5b를 참조하여 본 발명에 적용되는 수위판별 방법에 대한 양태에 대해 좀 더 상세히 설명한다.Next, with reference to Figures 5a and 5b will be described in more detail for the aspect of the water level discrimination method applied to the present invention.
우선, 본 발명의 수위판별 방법은, 도 5a에 도시된 바와 같이, 사용자 키 조작에 의한 급수 명령의 입력에 따라 상호간에 길이가 상이한 제 1, 2 감지 전극( S1, S2)과, 공통 전극(S0)이 설치된 증기발생장치 내부로 증기발생용수를 급수하고, 상기 증기발생용수의 급수에 따라 공통전극(S0), 제 1, 2 감지 전극(S1, S2)에 대한 세탁수 접촉 여부를 감지한다.First, the water level discrimination method of the present invention, as shown in Fig. 5a, the first and second sensing electrodes (S1, S2) and the common electrode (the length differs from each other according to the input of the water supply command by the user key operation) The steam generating water is supplied into the steam generator installed with S0, and the washing water contact with the common electrode S0 and the first and second sensing electrodes S1 and S2 is detected according to the water supply of the steam generating water. .
감지 결과, 상기 공통전극(S0)과 제 1 감지전극(S1)에 증기발생용수가 접촉된 경우에는, 그 증기발생용수의 접촉에 따라 상기 공통전극(S0)과 제 1 감지전극(S1)이 전기적으로 연결된다.As a result of the detection, when the steam generating water is in contact with the common electrode S0 and the first sensing electrode S1, the common electrode S0 and the first sensing electrode S1 are connected according to the contact of the steam generating water. Electrically connected.
이 때, 상기 제 1 감지전극에 연결된 단자의 전압을 측정하여 그 결과를 통해 현재 증기발생장치내의 수위가 기설정된 소정의 하한 수위(L1)임을 판별할 수 있게 된다. At this time, by measuring the voltage of the terminal connected to the first sensing electrode through the result it is possible to determine that the current level in the steam generator is a predetermined lower limit level (L1).
그리고, 상기 공통전극(S0)과 제 1, 2감지전극(S1, S2) 모두에 세탁수가 접촉된 경우에는 그로 인해 상기 공통전극과 제 2 감지전극(S2)이 전기적으로 연결되며, 이 때 상기 제 2 감지전극(S2)에 연결된 단자의 전압을 측정하여 그 결과를 통해 현재 증기발생장치내의 수위가 소정의 상한 수위(L2)인 것으로 판별할 수 있게 된다.When the wash water is in contact with both the common electrode S0 and the first and second sensing electrodes S1 and S2, the common electrode and the second sensing electrode S2 are electrically connected to each other. By measuring the voltage of the terminal connected to the second sensing electrode (S2) through the result it can be determined that the current level in the steam generator is a predetermined upper limit level (L2).
예컨대, 도 5b에 도시된 바와 같이, 상기 공통전극(S0)과 제 1 감지전극(S1)에 증기발생용수가 접촉된 경우에는, 즉 증기발생장치내의 수위가 하한 수위(L1)에 도달한 경우에는 상기 공통전극(S0)과 제 1 감지전극(S1)이 전기적으로 연결되어 A단자에는 하이 레벨의 전압이 인가되고, B단자에는 상기 하이 레벨의 전압과는 상대적으로 낮은 로우 레벨의 전압이 인가된다. For example, as illustrated in FIG. 5B, when steam generation water contacts the common electrode S0 and the first sensing electrode S1, that is, when the water level in the steam generator reaches the lower limit level L1. The common electrode S0 and the first sensing electrode S1 are electrically connected to each other, and a high level voltage is applied to terminal A, and a low level voltage relatively lower than the high level voltage is applied to terminal B. do.
반면에 상기 공통전극(S0), 제 1, 2 감지전극(S1, S2)모두에 증기발생용수가 모두 접촉된 경우에는, 즉 증기발생장치내의 수위가 상한 수위(L2)에 도달한 경우에는, 상기 공통전극(S0)과 제 2 감지전극(S2)이 전기적으로 연결되어 A단자와 B단자 모두에 하이 레벨의 전압이 인가된다.On the other hand, when all of the steam generating water is in contact with the common electrode S0 and the first and second sensing electrodes S1 and S2, that is, when the water level in the steam generator reaches the upper limit level L2, The common electrode S0 and the second sensing electrode S2 are electrically connected to each other so that a high level voltage is applied to both the A and B terminals.
즉, 하한 수위와 상한 수위일 때 상이하게 발생되는 전압을 검출해, 이를 기설정된 소정의 전압과 비교함에 따라 그 비교 결과로부터 하한 수위 또는 상한 수위여부를 판별할 수 있게 되는데, 이러한 비교 양태는 일반적인 공지 기술에 속하는 것으로 다양한 변형이 가능하며, 여기서는 그에 대한 자세한 설명을 생략한다.That is, by detecting the voltage generated differently at the lower limit level and the upper limit level, and comparing it with a predetermined voltage, it is possible to determine whether the lower limit level or the upper limit level is determined from the comparison result. Various modifications are possible as belonging to the known art, and a detailed description thereof will be omitted herein.
다음으로는, 도 6을 참조하여 본 발명에 따른 증기발생방법의 바람직한 실시예에 대해 설명한다.Next, with reference to Figure 6 will be described a preferred embodiment of the steam generating method according to the present invention.
<실시예><Example>
우선, 상기 도 6에 도시된 바와 같이, 본 발명에 따른 증기 발생 방법은, 사용자 키 조작에 의한 증기발생 명령의 입력에 따라(S60), 급수 밸브를 개방하여 증기발생장치내로 증기발생용수를 공급한다(S61). First, as shown in FIG. 6, in the steam generating method according to the present invention, in response to an input of a steam generating command by a user's key operation (S60), the water supply valve is opened to supply steam generating water into the steam generating device. (S61).
다음, 단계(S61)에 따라 증기발생용수가 공급되면, 증기발생장치내의 수위가 상승되고, 상승된 수위로 인해 증기발생용수가 증기발생장치내의 공통전극과 제 1 , 2 감지전극 모두에 접촉되면(S62), 그 접촉에 따라 발생되는 전압을 측정하여 이를 이용해, 예컨대 미리 설정된 상한 수위의 해당 전압과 비교하여 동일한 경우에, 상기 미리 설정된 소정의 상한 수위로 판별한다(S63).Next, when the steam generation water is supplied according to step S61, the water level in the steam generator is raised, and if the steam generation water contacts both the common electrode and the first and second sensing electrodes in the steam generator due to the elevated water level. In operation S62, the voltage generated according to the contact is measured and used to determine the predetermined predetermined upper limit level when the voltage is the same as compared with the corresponding voltage of the predetermined upper limit level, for example (S63).
그래서, 단계(S63)에 따라 증기발생장치내의 수위가 상한 수위로 판별되면, 급수 밸브를 폐쇄하여 증기발생용수의 공급을 정지하고(S63), 히터를 가열시켜(S65) 상기 증기발생장치내로 공급된 증기발생용수를 증기로 변환시킨다.Thus, when the water level in the steam generator is determined to be the upper limit level according to step S63, the water supply valve is closed to stop the supply of steam generation water (S63), and the heater is heated (S65) to be supplied into the steam generator. Converted steam generating water to steam.
그리고, 이렇게 변환된 증기는, 증기발생장치내의 소정 홈에 모아져서, 일정압력 이상이 되면, 증기 배출유로를 통하여 세탁기의 드럼 내부로 분사되며, 분사된 증기는 드럼 내부의 세탁물을 포적심시키거나 가열하게 된다.Then, the converted steam is collected in a predetermined groove in the steam generator, and when a predetermined pressure or more, the steam is injected into the drum of the washing machine through the steam discharge passage, the injected steam to coat the laundry in the drum or Heating.
한편, 단계(S65)에서 히터를 가열함에 따라 증기발생용수가 증기로 변환되면, 증기발생장치내의 증기발생용수가 줄어들어 상기 증기발생장치내의 수위는 하강된다.On the other hand, if the steam generation water is converted to steam by heating the heater in step (S65), the steam generation water in the steam generator is reduced, the water level in the steam generator is lowered.
다음, 이러한 수위 하강으로 증기발생용수가 상기 공통전극, 제 1, 2 감지 전극 중에서 길이가 가장 짧은 제 2 감지 전극과의 접촉 상태가 해제되고, 상기 공통전극과 제 1 전극에만 접촉될 경우에는(S66), 상기 증기발생장치의 수위가 미리 설정된 소정의 하한 수위인 것으로 판별하여, 히터를 오프(OFF)시킨 다음(S67), 증기발생장치내의 온도가 설정온도에 도달하지 않은 경우엔(S68) 단계(S61)로 진행하여 증기발생장치내로 증기발생용수를 재공급하고, 전술한 단계들을 반복적으로 순환하며, 단계(S68)에서 설정 온도에 도달한 경우에는 증기발생과 관련된 모든 과정을 종료하고, 세탁행정(S69)으로 진행하여 본 발명을 종료한다.Next, when the water generation of the vapor is released from the contact with the second sensing electrode having the shortest length among the common electrode and the first and second sensing electrodes, and only the common electrode and the first electrode come into contact with each other ( S66), it is determined that the level of the steam generator is at a predetermined lower limit level, and the heater is turned off (S67), and when the temperature in the steam generator does not reach the set temperature (S68). Proceeds to step S61 to re-supply steam generation water into the steam generator, repeat the above-mentioned steps repeatedly, if the set temperature is reached in step S68, all processes related to steam generation are terminated, The process proceeds to the washing operation (S69) ends the present invention.
이상에서 상세히 설명한 바와 같이, 본 발명에 따른 드럼 세탁기의 증기발생장치 및 그 방법은, 증기압에 의해 영향을 받지 않고도 종래보다 비교적 간단한 방법으로 증기발생장치내의 수위를 판별할 수 있어, 이를 통해 증기발생장치내의 증기 발생을 제어할 수 있기 때문에, 종래보다 상대적으로 증기발생장치의 제조 비용을 절감하고, 더불어 그 크기도 줄일 수 있는 효과가 있다. As described in detail above, the steam generator and method of the drum washing machine according to the present invention can determine the water level in the steam generator in a relatively simple manner than the conventional, without being affected by the steam pressure, thereby generating steam Since it is possible to control the generation of steam in the apparatus, there is an effect that can reduce the manufacturing cost of the steam generator relative to the prior art, and also reduce its size.
본 발명은 기재된 구체적인 예에 대해서만 상세히 설명되었지만 본 발명의 기술사상 범위 내에서 다양한 변형 및 수정이 가능함은 당업자에게 있어서 명백한 것이며, 이러한 변형 및 수정이 첨부된 특허청구범위에 속함은 당연한 것이다Although the invention has been described in detail only with respect to the specific examples described, it will be apparent to those skilled in the art that various modifications and variations are possible within the spirit of the invention, and such modifications and variations belong to the appended claims.
도 1은 일반적인 드럼 세탁기를 도시한 도면,1 is a view showing a typical drum washing machine,
도 2는 일반적인 드럼 세탁기의 수위판별방법을 설명하기 위한 도면,2 is a view for explaining a water level discriminating method of a general drum washing machine;
도 3은 본 발명이 적용되는 드럼 세탁기를 도시한 도면,3 is a view showing a drum washing machine to which the present invention is applied;
도 4는 본 발명에 따른 증기 발생 장치를 도시한 도면,4 is a view showing a steam generating device according to the present invention,
도 5a와 도 5b는 본 발명에 사용되는 수위판별방법을 설명하기 위한 도면,5A and 5B are views for explaining a water level discrimination method used in the present invention;
도 6은 본 발명에 따른 증기 발생 방법을 도시한 플로우 챠트이다.6 is a flow chart illustrating a steam generating method according to the present invention.
* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings
300 : 드럼 310 : 유입관 300: drum 310: inlet pipe
320 : 세제박스 330 : 증기발생장치 320: detergent box 330: steam generator
340 : 역류방지용 분지장치 350 : 분사노즐 340: branch for preventing backflow 350: spray nozzle
360 : 유출관 370 : 순환 펌프 360: outlet pipe 370: circulation pump
380 : 외관 케이스 380: Exterior Case
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Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
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| KR10-2003-0056267A KR100500887B1 (en) | 2003-08-13 | 2003-08-13 | Apparatus for generating steam in Drum-type washing machine and method of the same |
| US10/753,430 US20050034250A1 (en) | 2003-08-13 | 2004-01-09 | Heating apparatus of washing machine and control method thereof |
| CNB2004100035399A CN100387769C (en) | 2003-08-13 | 2004-01-29 | Heating apparatus of washing machine and control method thereof |
| EP04002018A EP1507031B1 (en) | 2003-08-13 | 2004-01-30 | Heating apparatus of washing machine and control method thereof |
| DE602004022113T DE602004022113D1 (en) | 2003-08-13 | 2004-01-30 | Heating device for washing machine and control method for it |
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| KR10-2003-0056267A KR100500887B1 (en) | 2003-08-13 | 2003-08-13 | Apparatus for generating steam in Drum-type washing machine and method of the same |
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| KR100500887B1 true KR100500887B1 (en) | 2005-07-14 |
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| EP (1) | EP1507031B1 (en) |
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-
2004
- 2004-01-09 US US10/753,430 patent/US20050034250A1/en not_active Abandoned
- 2004-01-29 CN CNB2004100035399A patent/CN100387769C/en not_active Expired - Lifetime
- 2004-01-30 EP EP04002018A patent/EP1507031B1/en not_active Expired - Lifetime
- 2004-01-30 DE DE602004022113T patent/DE602004022113D1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101183153B1 (en) * | 2005-07-15 | 2012-09-14 | 주식회사 대우일렉트로닉스 | Drum type washing machine having steam function |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20050017489A (en) | 2005-02-22 |
| CN1580369A (en) | 2005-02-16 |
| EP1507031A1 (en) | 2005-02-16 |
| DE602004022113D1 (en) | 2009-09-03 |
| CN100387769C (en) | 2008-05-14 |
| EP1507031B1 (en) | 2009-07-22 |
| US20050034250A1 (en) | 2005-02-17 |
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