KR960006625Y1 - Level detection apparatus - Google Patents
Level detection apparatus Download PDFInfo
- Publication number
- KR960006625Y1 KR960006625Y1 KR2019930009933U KR930009933U KR960006625Y1 KR 960006625 Y1 KR960006625 Y1 KR 960006625Y1 KR 2019930009933 U KR2019930009933 U KR 2019930009933U KR 930009933 U KR930009933 U KR 930009933U KR 960006625 Y1 KR960006625 Y1 KR 960006625Y1
- Authority
- KR
- South Korea
- Prior art keywords
- fuel
- ntc thermistor
- liquid level
- level detection
- fuel tank
- Prior art date
Links
Classifications
-
- 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
- G01F23/246—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 thermal devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Nonlinear Science (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Level Indicators Using A Float (AREA)
Abstract
내용없음No content
Description
제1도는 종래의 기술을 설명하려는 액위검지 장치 개략도1 is a schematic diagram of a liquid level detection device to explain a conventional technology
제2도는 본 고안이 적용원 액위검지 장치의 개략도2 is a schematic view of the liquid level detection device to which the present invention is applied
제3도는 본 고안의 검지 장치에 적용된 NTC Thermistor 표면도로서,3 is a surface diagram of the NTC Thermistor applied to the detection device of the present invention,
a)는 정면도이고,a) is a front view,
b)는 배면도이다b) is the rear view
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 연료탱크 2 : 검지부1: fuel tank 2: detection unit
3 : NTC 더어미스터 4 : 전극면3: NTC thermistor 4: electrode surface
5 : 항온기 6 : 전류변환기5: thermostat 6: current converter
7 : 연료계기판7: fuel gauge
본 고안은 자동차 또는 보일러등의 연료탱크 연료를 검지하기 위한 액위검지 장치에 관한 것으로서, 특히 NTC 더어미스트(thermistor) 전후면에 전극면적이 겹치게 직렬로 배열하여 액위 레벨을 감지할 수 있도록 한 액위검지장치에 관한 것이다.The present invention relates to a liquid level detection device for detecting fuel tank fuel in an automobile or a boiler, and in particular, a liquid level detection to detect a liquid level by arranging the electrode areas overlapping in series with the front and rear surfaces of an NTC thermistor. Relates to a device.
종래의 액위검지 장치는 제1도에서와 같이 자동차 또는 보일러등의 연료탱크(101)내에 회전축(103)을 중심으로 일측에는 부구(108)를 설치하고 타측에는 접촉단자(104)를 설치한다.In the conventional liquid level detecting apparatus, as shown in FIG. 1, a fitting 108 is installed at one side and a contact terminal 104 is installed at the other side of the fuel tank 101, such as an automobile or a boiler, around the rotating shaft 103.
그리고, 상기 접촉단자(104)와 접촉되는 위치에는 가변저항코일(105)이 권선된 검지부(102)를 설치하되, 이 검지부(102)는 전류변환기(106)와 연결되고, 이 전류변환기(106)는 연료계기판(107)과 연결된 구성으로 되어 있었다.In addition, a detector 102 in which a variable resistance coil 105 is wound is installed at a position in contact with the contact terminal 104, and the detector 102 is connected to a current converter 106, and the current converter 106 is provided. ) Is connected to the fuel gauge substrate 107.
이와같은 액위검지 장치의 동작은 사용자가 연료량을 감지하기 위해 전원공급스위치(미도시함)를 ON할 경우 연료탱크(101) 내의 연료량에 의해 부구(108)가 회전축(103)을 축으로 하여 위치가 상하로 이동되면 이와 연동된 타측의 접촉단자(104)가 검기부(102)에 권선된 가변저항코일(105)의 상하로 이동되어 접촉된다.The operation of the liquid level detection device is such that when the user turns on the power supply switch (not shown) to detect the fuel amount, the float 108 is positioned on the rotary shaft 103 by the amount of fuel in the fuel tank 101. When is moved up and down is the contact terminal 104 of the other side interlocked with it is moved up and down of the variable resistance coil 105 wound on the detector 102 is in contact with.
따라서, 상기 가변저항코일(105) 접촉위치에 따라 감지하여 전류변환기(106)에서 공급되는 공급전류의 량이 변환되어 연료계기판(107)의 지침바늘이 유동시켜 연료의 양을 검지하는 것이다.Therefore, the amount of supply current supplied from the current converter 106 is sensed according to the contact position of the variable resistance coil 105 to convert the guide needle of the fuel gauge substrate 107 to detect the amount of fuel.
이때, 부구(108)가 내려갈 경우 연료계기판(107)의 지점바늘은 E지점 방향을 가르키고 부구(108)가 올라갈 셩우에는 연료계기판(107)의 지침바늘이 F지점 방향을 가르키게 된다.At this time, when the float 108 goes down, the point needle of the fuel gauge substrate 107 points in the direction of E point, and when the float 108 goes up, the guide needle of the fuel gauge substrate 107 points in the direction of F point.
이상 설명한 바와같이 상기와 같은 액위검지 장치의 작동은 연료탱크내의 연료가 유동될 경우 부구가 움직이면서 연료계기판의 지침바늘이 오작동되어 잔류연료량의 검지를 정확하게 할 수 없는 결점이 있었을 뿐 아니라 회전축에 오물등이 낄 경우에는 부구의 회전이 원활하지 못해 전력소비만 될뿐 오동작이 비일비재하게 발생되며 구조가 복잡하여 제품의 원가 상승을 초래하는 문제점등이 야기되었다.As described above, the operation of the liquid level detecting device as described above has the drawback that the guide needle of the fuel gauge board malfunctions when the fuel in the fuel tank flows, and the residual fuel amount cannot be accurately detected. In this case, the ball is not rotated smoothly, only power consumption is generated, and malfunctions are infrequent, and the structure is complicated, resulting in a problem that increases the cost of the product.
본 고안은 상기한 종래의 제결점 및 문제점을 해결하기 위하여 안출된 것으로서, 본 고안의 그 목적으로는 NTC 더어미스터 소자에 전극면을 앞 뒷면에 서로 교차되도록 직렬로 배열한 검지부를 연료탱크에 장착하여, NTC 더어미스터의 액위레벨이 변함에 의해 저항값이 변하는 것을 측정하는 것으로서, 구조의 소형 및 경량화를 할수 있고, 연료량 측정을 정확히 할 수 있으며 제작시 조립 및 장착이 용이하게 할 수 있도록 한 것이 그 특징이다.The present invention has been made to solve the above-mentioned conventional drawbacks and problems, the purpose of the present invention is to mount the detection unit arranged in series to cross the electrode surface on the front and rear in the fuel tank NTC thermistor element to the fuel tank By measuring the change of the resistance value by changing the liquid level of NTC thermistor, it is possible to reduce the size and weight of the structure, to accurately measure the amount of fuel, and to facilitate the assembly and installation during manufacturing. It is a feature.
이상 설명한 바와같이 상기와 같은 액위검지 장치의 작동은 연료탱크내의 연료가 유동될 경우 부구가 움직이면서 연료계기판의 지침 바늘이 오작동되어 잔류 연료량의 검지를 정확하게 할수 없는 결점이 있었을 뿐 아니라 회전축에 오물등이 낄 경우에는 부구의 회전이 원활하지 못해 전력소비만 될뿐 오동작이 비일비재하게 발생되며 구조가 복잡하여 제품의 원가상승을 초래하는 문제점등이 야기되었다.As described above, the operation of the liquid level detection device as described above has the drawback that the guide needle of the fuel gauge is malfunctioned when the fuel inside the fuel tank flows, and the indicator needle on the fuel gauge malfunctions. In the case of pinching, the ball is not rotated smoothly, it consumes only power, and malfunctions occur infrequently, and the structure is complicated, which causes problems such as cost increase of the product.
본 고안은 상기한 종래의 제결점 및 문제점을 해결하기 위하여 안출된 것으로서, 본 고안의 그 목적으로는 NTC 더어미스터 소자에 전극을 앞뒷면에 서로 교차되도록 직렬로 배열한 검지부를 연료탱크에 장착하여, NTC 더어미스터의 액위레벨이 변함에 의해 저항값이 변하는 것을 측정하는 것으로서, 구조의 소형 및 경량화를 할수 있고, 연료량 측정을 정확히 할수 있으며 제작시 조립 및 장착이 용이하게 할수 있도록 한 것이 그 특징이다.The present invention has been made to solve the above-mentioned conventional drawbacks and problems, the purpose of the present invention is to mount the detection unit arranged in series to cross the electrodes on the front and back on the NTC thermistor element to the fuel tank In addition, it measures the change of resistance value by changing the liquid level of NTC thermistor, which makes it possible to make the structure smaller and lighter, to accurately measure the amount of fuel, and to make it easy to assemble and install during manufacturing. .
상기의 목적을 달성할 수 있는 본 고안을 첨부된 도면에 의하여 상세히 설명하면 다음과 같다.When the present invention to achieve the above object will be described in detail by the accompanying drawings as follows.
제1도 및 제2도에서 도시한바와같이 연료탱크(1) 내의 이 검지부(2)는 NTC 더어미스터 앞뒷면에 서로 교차하도록 직렬로 전극면(4)을 배열한 NTC 더어미스터(3)를 중앙에 위치한 상태로 항온기(5)가 설치되어 있다.As shown in FIG. 1 and FIG. 2, this detection part 2 in the fuel tank 1 has the NTC thermistor 3 which arrange | positioned the electrode surface 4 in series so that it may cross each other on the front and back of NTC thermistor. The thermostat 5 is installed in the center.
그리고, 상기 NTC 더어미스터(3)는 전류변환기(6)와 연결되고 이 전류변환기는 연료계기판(7)과 연결되었다.Then, the NTC thermistor 3 is connected to the current converter 6, which is connected to the fuel gauge substrate 7.
이와같이 구성된 본 고안의 액위검지 장치는 연료탱크(1)내에 설치된 검지부(2)의 NTC 더어미스터(3)는 전극면(4)을 일정한 간격(약 2㎜)으로 도포된 상태로 되어 있어 연료탱크(1)내의 연료 수위에 따라 NTC 더어미스터(3)에 따른 저항값 변화를 전극면(4)이 감지하여 직류변환기(6)를 통해 연료의 량을 연료계기판(7)에 가르키게 되는 것이다.In the liquid level detection device of the present invention configured as described above, the NTC thermistor 3 of the detection unit 2 installed in the fuel tank 1 has the electrode surface 4 coated at regular intervals (about 2 mm) so that the fuel tank According to the fuel level in (1), the electrode surface 4 detects a change in resistance value according to the NTC thermistor 3 and points the fuel amount to the fuel gauge substrate 7 through the DC converter 6.
이때, 연료계기판(7)은 아나로그식과 디지탈식으로 사용할 수 있는 것이다.At this time, the fuel gauge substrate 7 can be used in analog and digital.
상기 연료탱크(1)내의 연료검지에 있어 NTC 더어미스터(3)의 전극면(4)을 2㎜로 겹치게 하고 상기 연료레벨검지부(2)에 NTC 더어미스터(3)에 도포된 전극면(4)의 갯수를 12개로 사용하고 전원전압을 12V로 인가할 경우 연료레벨검지부의 저항값에 따라 연료레벨이 변화되는 것을 알 수 있다.In the fuel detection in the fuel tank 1, the electrode surface 4 of the NTC thermistor 3 is overlapped by 2 mm, and the electrode surface 4 applied to the NTC thermistor 3 to the fuel level detection unit 2. If the number of) is used as 12 and the power supply voltage is applied at 12V, it can be seen that the fuel level changes according to the resistance value of the fuel level detector.
상기 연료레벨 저항 특성을 아래의 표1과 같다.The fuel level resistance characteristics are shown in Table 1 below.
[표 1]TABLE 1
그리고 12개의 전극면(4)이 배열된 NTC 더어미스터(3)를 상호 통전되도록 양단의 전극면(4)을 겹치게 직렬로 연결하여 전원부의 전원이 인가되면 12개의 전극면(4)이 배열된 NTC 더어미스터(3)는 각각 소정의 저항값을 갖고 발열한다.Then, the NTC thermistors 3 with the 12 electrode surfaces 4 arranged thereon are connected in series so that the electrode surfaces 4 at both ends overlap each other in series so that when the power supply of the power supply unit is applied, the 12 electrode surfaces 4 are arranged. The NTC thermistors 3 generate heat with predetermined resistance values, respectively.
즉, 연료레벨 검지부(2)의 NTC 더어미스터(3)에 전류를 공급하면 NTC 더어미스터(3) 전극면(4)의 1개 도포 저항값은 40℃의 온도에서 30Ω 정도가 되고, 도달온도가 200∼250℃에서 1Ω이하의 특성을 갖게된다.That is, when a current is supplied to the NTC thermistor 3 of the fuel level detection unit 2, one coating resistance value of the electrode surface 4 of the NTC thermistor 3 becomes about 30? Has a characteristic of 1 Ω or less at 200 to 250 ° C.
상기와 같은 특성을 갖는 전극면(4)가 앞뒷면에 배열된 NTC 더어미스터(3)가 중앙에 배열된 상태로 항온기(5)를 설치하여 연결한 검지부(2)를 연료탱크(1) 내부에 장착하면 연료수의에 따라 연료내에 잠기는 부위와 감기지 않는 부위의 합산 저항값이 변하게 되어 이 산출된 전류값에 의해 연료계기판(7)의 지점 바늘 또는 디지탈에 의해 연료량을 간편히 알수 있게되는 것이다.The detection unit 2 installed by connecting the thermostat 5 in a state where the NTC thermistors 3 having the above-described electrode surface 4 arranged on the front and back is arranged at the center thereof is connected to the inside of the fuel tank 1. In this case, the summation resistance value of the part which is submerged in the fuel and the part which is not wound changes according to the number of fuels, and the amount of fuel can be easily known by the point needle or digital of the fuel gauge substrate 7 based on the calculated current value.
이상설명한바와 같이 연료탱크내의 연료의 량을 NTC 더어미스터 앞뒷면에 서로 교차하도록 전극면을 직렬로 배열하여 상기 전극면이 잠김에 따라 액위레벨을 변화함에 의해 저항값이 변하는 것을 측정하는 것으로서, 구조를 소형 또는 경량화할 수 있고, 구조의 단순화로 제작시 조립이 간편할 뿐만 아니라 장착이 간편용이한 매우 유용한 고안이다.As described above, the electrode surface is arranged in series so that the amount of fuel in the fuel tank intersects the front and rear surfaces of the NTC thermistor, and the resistance value is changed by changing the liquid level as the electrode surface is locked. It is a very useful design that can be reduced in size or light weight, and the assembly is easy as well as easy to manufacture when the structure is simplified.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019930009933U KR960006625Y1 (en) | 1993-06-08 | 1993-06-08 | Level detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019930009933U KR960006625Y1 (en) | 1993-06-08 | 1993-06-08 | Level detection apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR950001888U KR950001888U (en) | 1995-01-04 |
| KR960006625Y1 true KR960006625Y1 (en) | 1996-08-03 |
Family
ID=19356694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019930009933U KR960006625Y1 (en) | 1993-06-08 | 1993-06-08 | Level detection apparatus |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR960006625Y1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090103412A (en) * | 2008-03-28 | 2009-10-01 | 주식회사 경동나비엔 | Oil boiler having heat exchanger with tub structure |
-
1993
- 1993-06-08 KR KR2019930009933U patent/KR960006625Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR950001888U (en) | 1995-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6634229B1 (en) | Resistive fluid level sensing and control system | |
| TW441218B (en) | Heater-sensor complex | |
| US6223595B1 (en) | Resistive fluid level sensing and control system | |
| KR910004509Y1 (en) | Alcohol sensor | |
| KR960006625Y1 (en) | Level detection apparatus | |
| US20080295592A1 (en) | Liquid level detection device | |
| US20050001636A1 (en) | Method and apparatus for measuring a fluid level and a motor vehicle provided with such apparatus | |
| KR101785387B1 (en) | Apparatus for sensing fuel level in fuel tank | |
| JPH03262949A (en) | Liquid kind detecting device | |
| US3529472A (en) | Float-operated thermistor tank level sender | |
| US4520653A (en) | Circuits for obtaining a voltage reading from a sensing element | |
| KR960006626Y1 (en) | Level detection apparatus | |
| KR960000779Y1 (en) | Fuel sensor | |
| US3563091A (en) | Float operated thermistor tank level sender | |
| EP0086415B1 (en) | Humidity sensitive device | |
| US4210894A (en) | Terminal unit for electrical circuit elements and sensing device employing said terminal unit | |
| KR100186973B1 (en) | Liquid level detector | |
| JPS63223552A (en) | Semiconductor type gas sensor | |
| JPH03209703A (en) | Liquid-level detecting element | |
| KR960006624Y1 (en) | Level detection apparatus | |
| JPH0239245Y2 (en) | ||
| JPH0312701B2 (en) | ||
| KR930004753Y1 (en) | Level detecting apparatus | |
| KR960007120B1 (en) | Weight measuring apparatus in microwave oven | |
| JPS585220Y2 (en) | Ekimen Kenchiki |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E601 | Decision to refuse application | ||
| J2X1 | Appeal (before the patent court) |
Free format text: APPEAL AGAINST DECISION TO DECLINE REFUSAL |
|
| B701 | Decision to grant | ||
| REGI | Registration of establishment | ||
| FPAY | Annual fee payment |
Payment date: 20000325 Year of fee payment: 5 |
|
| LAPS | Lapse due to unpaid annual fee |