CN103674165A - Oil level detection device for oil cup of range hood - Google Patents
Oil level detection device for oil cup of range hood Download PDFInfo
- Publication number
- CN103674165A CN103674165A CN201310653491.5A CN201310653491A CN103674165A CN 103674165 A CN103674165 A CN 103674165A CN 201310653491 A CN201310653491 A CN 201310653491A CN 103674165 A CN103674165 A CN 103674165A
- Authority
- CN
- China
- Prior art keywords
- oil
- resistance
- cup
- range hood
- fluid
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 16
- 239000012530 fluid Substances 0.000 claims description 32
- 230000001050 lubricating effect Effects 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 8
- 239000000565 sealant Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 101100327917 Caenorhabditis elegans chup-1 gene Proteins 0.000 description 10
- 230000001174 ascending effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000010205 computational analysis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Images
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Ventilation (AREA)
Abstract
The invention discloses an oil level detection device for an oil cup of a range hood, which heats oil in the oil cup and detects the temperature of the oil through a heating thermistor on a detection circuit, then compares the front temperature and the rear temperature of the oil to obtain a corresponding temperature difference, and further analyzes and obtains the height of the oil in the oil cup, and finally displays the detected oil level height of the oil cup on a user interface, so that a user can clearly see the oil level height, and can remind people to clean the oil cup in time, thereby avoiding the phenomenon that dishes are influenced by the overflow of the oil and bringing convenience to the life of people.
Description
[technical field]
The present invention relates to liquid level detection device, especially a kind of range hood oil cup oil level detecting device.
[background technology]
At present, the lubricating cup of a lot of range hoods is hidden, and user can't see oil level, does not also know when lubricating cup can be expired, and makes troubles therefore to people's life.
[summary of the invention]
The technical problem to be solved in the present invention is to provide a kind of range hood oil cup oil level detecting device, by the hot type thermistor on testing circuit, the fluid in lubricating cup is heated and is detected the temperature of fluid, compare afterwards fluid front and back temperature, draw the corresponding temperature difference, and then can analyze the height that draws fluid in lubricating cup, finally the lubricating cup level height detecting is shown to user interface, user can be clearly seen that level height, can remind people to clear up in time lubricating cup, avoid fluid to overflow and affect dish, bringing convenience to people's life.
For solving the problems of the technologies described above, the present invention relates to a kind of range hood oil cup oil level detecting device, comprise and being located on range hood for collecting the lubricating cup of fluid and stretching into lubricating cup for detection of the electrode of fluid liquid level, in described electrode, be provided with the testing circuit for being connected with MCU, described testing circuit comprises and is located at electrode lower end for detection of oil liquid temperature in lubricating cup and the hot type thermistor R1 for lubricating cup fluid is heated.
Described testing circuit also comprises triode Q1, resistance R 4, resistance R 2 and resistance R 3, the base stage of described triode Q1 is connected with resistance R 4 one end, the control signal input end that described resistance R 4 other ends are testing circuit, for being connected with the output terminal of MCU, the grounded emitter of described triode Q1, the collector of described triode Q1 respectively with hot type thermistor R1, resistance R 2 is connected with resistance R 3 one end, the described hot type thermistor R1 other end is connected with power supply VCC, the detection signal output terminal that described resistance R 2 other ends are testing circuit, for being connected with the input end of MCU, described resistance R 3 other end ground connection.
Described electrode outside cover has the protective casing being connected with range hood by the upper end of can Heat Conduction Material making, and is filled with heat conduction fluid sealant between described protective casing and electrode.
Described lubricating cup sidewall is provided with oil level scale mark.
The present invention relates to a kind of range hood oil cup oil level detecting device, by the hot type thermistor on testing circuit, the fluid in lubricating cup is heated and is detected the temperature of fluid, compare afterwards fluid front and back temperature, draw the corresponding temperature difference, and then can analyze the height that draws fluid in lubricating cup, finally the lubricating cup level height detecting is shown to user interface, user can be clearly seen that level height, can remind people to clear up in time lubricating cup, avoid fluid to overflow and affect dish, bringing convenience to people's life.
[accompanying drawing explanation]
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail, wherein:
Fig. 1 is structural representation of the present invention.
Fig. 2 is the circuit diagram of testing circuit in the present invention.
[embodiment]
Below in conjunction with accompanying drawing, embodiments of the present invention are elaborated.
A kind of range hood oil cup oil level detecting device of the present invention, comprise and being located on range hood for collecting the lubricating cup 1 of fluid and stretching into lubricating cup 1 for detection of the electrode 2 of fluid liquid level, at lubricating cup 1 sidewall, be provided with oil level scale mark 11, in described electrode 2, be provided with the testing circuit 3 for being connected with MCU, described testing circuit 3 comprises and is located at electrode 2 lower ends for detection of oil liquid temperature in lubricating cup 1 and the hot type thermistor R1 for lubricating cup 1 fluid is heated.
Described testing circuit 3 also comprises triode Q1, resistance R 4, resistance R 2 and resistance R 3, the base stage of described triode Q1 is connected with resistance R 4 one end, described resistance R 4 other ends are the control signal input end of testing circuit 3, for being connected with the output terminal of MCU, the grounded emitter of described triode Q1, the collector of described triode Q1 respectively with hot type thermistor R1, resistance R 2 is connected with resistance R 3 one end, the described hot type thermistor R1 other end is connected with power supply VCC, described resistance R 2 other ends are the detection signal output terminal of testing circuit 3, for being connected with the input end of MCU, described resistance R 3 other end ground connection.
Described electrode 2 outsides covers have the protective casing 21 being connected with range hood by the upper end of can Heat Conduction Material making; between described protective casing 21 and electrode 2, be filled with heat conduction fluid sealant 22; the heat that hot type thermistor R1 produces can successively be transmitted to the fluid lubricating cup 1 from heat conduction fluid sealant 22 and protective casing 21; equally, hot type thermistor R1 carries out temperature detection by fluid in heat conduction fluid sealant 22 and 21 pairs of lubricating cups 1 of protective casing.
As shown in Figure 2, resistance R 4 is the biasing resistor of triode Q1, and I/O, for driving signal, during use, is connected with MCU, and resistance R 1 and resistance R 3 form bleeder circuit, and resistance R 2 is the current-limiting resistance of A/D data acquisition, and during use, A/D is connected on analog to digital converter.
Hot type thermistor R1 not only can, for the temperature detection of medium, also can directly be used for to dielectric heating.Utilize these two features of hot type thermistor R1, and in conjunction with the switching characteristic of triode Q1, by hot type thermistor R1, the fluid in lubricating cup 1 heated and detect two courses of work of oil liquid temperature, just can complete the detection of level height.
Because hot type thermistor R1 radiating efficiency and surrounding medium have close relationship, its heat conduction of different materials and heat-sinking capability are also different.Hot type thermistor R1 is placed on respectively in air He in fluid and heats the identical time, because the heat conduction of flowing fluid ratio air is fast, dispels the heat also fast, and the value that air dielectric and fluid medium temperature rise must be not identical; On the contrary, if make air dielectric and fluid medium reach same temperature, need the asynchronism(-nization) of hot type thermistor R1 heating.
As shown in Figure 1, the sidewall of lubricating cup 1 is provided with oil level scale mark 11, and level height is when different positions, and it is unequal that hot type thermistor R1 is heated to the required heat time of same temperature to the fluid in lubricating cup 1.
The course of work of the present invention is as follows:
Conventionally I/O sets low level, triode Q1 cut-off, because resistance R 3 resistances are very large, the electric current flowing through on hot type thermistor R1 is very little, now hot type thermistor R1 is used as a temperature sensor, start the partial pressure value that A/D converter gathers hot type thermistor R1 and resistance R 3, and calculate the current temperature value T1 of hot type thermistor R1, T1 is the environment temperature of hot type thermistor R1.When driving signal I/O is set high to level, triode Q1 conducting, on hot type thermistor R1, there is larger electric current to pass through, hot type thermistor R1 heating produces heat, the resistance of hot type thermistor R1 varies with temperature and changes simultaneously, be heated to setting-up time, and guarantee that each heat time equates, I/O is set low to level, triode Q1 cut-off, hot type thermistor R1 stops heating, now start the partial pressure value that A/D converter gathers hot type thermistor R1 and resistance R 3, can calculate the current temperature value T2 of hot type thermistor R1, and then obtain ascending temperature value T3=T2-T1, because the height of oil level can change the radiating condition of hot type thermistor R1, that is to say, in same time, oil level more low-temperature-rise is higher, otherwise oil level more high temperature rise is less, so different level height are corresponding one by one corresponding to ascending temperature value T3, obtain after ascending temperature value T3, can go out by MCU computational analysis the height of oil level in range hood oil cup 1.
Claims (4)
1. a range hood oil cup oil level detecting device, it is characterized in that comprising and be located on range hood for collecting the lubricating cup (1) of fluid and stretching into lubricating cup (1) for detection of the electrode (2) of fluid liquid level, in described electrode (2), be provided with the testing circuit (3) for being connected with MCU, described testing circuit (3) comprises and is located at electrode (2) lower end for detection of oil liquid temperature in lubricating cup (1) and the hot type thermistor R1 for lubricating cup (1) fluid is heated.
2. by a kind of range hood oil cup oil level detecting device described in claim 1, it is characterized in that described testing circuit (3) also comprises triode Q1, resistance R 4, resistance R 2 and resistance R 3, the base stage of described triode Q1 is connected with resistance R 4 one end, described resistance R 4 other ends are the control signal input end of testing circuit (3), for being connected with the output terminal of MCU, the grounded emitter of described triode Q1, the collector of described triode Q1 respectively with hot type thermistor R1, resistance R 2 is connected with resistance R 3 one end, the described hot type thermistor R1 other end is connected with power supply VCC, described resistance R 2 other ends are the detection signal output terminal of testing circuit (3), for being connected with the input end of MCU, described resistance R 3 other end ground connection.
3. by a kind of range hood oil cup oil level detecting device described in claim 1 or 2; it is characterized in that described electrode (2) outside cover has the protective casing (21) being connected with range hood by the upper end of can Heat Conduction Material making, and is filled with heat conduction fluid sealant (22) between described protective casing (21) and electrode (2).
4. by a kind of range hood oil cup oil level detecting device described in claim 3, it is characterized in that described lubricating cup (1) sidewall is provided with oil level scale mark (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310653491.5A CN103674165B (en) | 2013-12-05 | 2013-12-05 | Oil level detection device for oil cup of range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310653491.5A CN103674165B (en) | 2013-12-05 | 2013-12-05 | Oil level detection device for oil cup of range hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103674165A true CN103674165A (en) | 2014-03-26 |
| CN103674165B CN103674165B (en) | 2017-03-15 |
Family
ID=50312420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310653491.5A Active CN103674165B (en) | 2013-12-05 | 2013-12-05 | Oil level detection device for oil cup of range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103674165B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222194A (en) * | 2015-10-23 | 2016-01-06 | 广东美的厨房电器制造有限公司 | The control method of smoke exhaust ventilator and smoke exhaust ventilator |
| CN107726391A (en) * | 2016-08-11 | 2018-02-23 | 九阳股份有限公司 | A kind of fuel-flow control method of lampblack absorber oil box |
| CN108644856A (en) * | 2018-08-17 | 2018-10-12 | 佛山市云米电器科技有限公司 | A kind of catchment cup for having both oil mass temperature and oil mass volume and showing |
| CN108827422A (en) * | 2018-06-28 | 2018-11-16 | 中国核动力研究设计院 | Liquid level of liquid metal continuous measuring device and its level measuring method |
| CN110160105A (en) * | 2019-06-24 | 2019-08-23 | 珠海格力电器股份有限公司 | Oil cup heating method and device and range hood |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200950089Y (en) * | 2006-08-24 | 2007-09-19 | 张勇伟 | Temperature and water level integrated transducer |
| CN201199064Y (en) * | 2008-03-31 | 2009-02-25 | 浙江帅康电气股份有限公司 | Cooking fume exhauster with liquid level detecting and alarming functions |
| CN201476901U (en) * | 2009-07-08 | 2010-05-19 | 杨丽君 | Temperature liquid level sensor for solar water heater |
| CN102200463A (en) * | 2011-03-23 | 2011-09-28 | 泰州市瑞芝电子有限公司 | Liquid level linear measurement method based on impedance measurement |
| CN103196517A (en) * | 2013-03-14 | 2013-07-10 | 济南铁路天龙高新技术开发有限公司 | Hydraulic point machine oil tank oil level monitoring alarm device |
| CN203606003U (en) * | 2013-12-05 | 2014-05-21 | 华帝股份有限公司 | Detection device for oil level of oil cup of range hood |
-
2013
- 2013-12-05 CN CN201310653491.5A patent/CN103674165B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200950089Y (en) * | 2006-08-24 | 2007-09-19 | 张勇伟 | Temperature and water level integrated transducer |
| CN201199064Y (en) * | 2008-03-31 | 2009-02-25 | 浙江帅康电气股份有限公司 | Cooking fume exhauster with liquid level detecting and alarming functions |
| CN201476901U (en) * | 2009-07-08 | 2010-05-19 | 杨丽君 | Temperature liquid level sensor for solar water heater |
| CN102200463A (en) * | 2011-03-23 | 2011-09-28 | 泰州市瑞芝电子有限公司 | Liquid level linear measurement method based on impedance measurement |
| CN103196517A (en) * | 2013-03-14 | 2013-07-10 | 济南铁路天龙高新技术开发有限公司 | Hydraulic point machine oil tank oil level monitoring alarm device |
| CN203606003U (en) * | 2013-12-05 | 2014-05-21 | 华帝股份有限公司 | Detection device for oil level of oil cup of range hood |
Non-Patent Citations (1)
| Title |
|---|
| 胡正军 等: "吸油烟机油杯液位检测方法", 《中国土木工程学会燃气分会应用专业委员会2014年年会论文集》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222194A (en) * | 2015-10-23 | 2016-01-06 | 广东美的厨房电器制造有限公司 | The control method of smoke exhaust ventilator and smoke exhaust ventilator |
| CN107726391A (en) * | 2016-08-11 | 2018-02-23 | 九阳股份有限公司 | A kind of fuel-flow control method of lampblack absorber oil box |
| CN108827422A (en) * | 2018-06-28 | 2018-11-16 | 中国核动力研究设计院 | Liquid level of liquid metal continuous measuring device and its level measuring method |
| CN108827422B (en) * | 2018-06-28 | 2019-12-10 | 中国核动力研究设计院 | liquid metal liquid level continuous measuring device and liquid level measuring method thereof |
| CN108644856A (en) * | 2018-08-17 | 2018-10-12 | 佛山市云米电器科技有限公司 | A kind of catchment cup for having both oil mass temperature and oil mass volume and showing |
| CN108644856B (en) * | 2018-08-17 | 2024-01-09 | 佛山市云米电器科技有限公司 | Oil collecting cup with oil mass temperature and oil mass volume display function |
| CN110160105A (en) * | 2019-06-24 | 2019-08-23 | 珠海格力电器股份有限公司 | Oil cup heating method and device and range hood |
| CN110160105B (en) * | 2019-06-24 | 2024-02-23 | 珠海格力电器股份有限公司 | Oil cup heating method and device and range hood |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103674165B (en) | 2017-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103674165A (en) | Oil level detection device for oil cup of range hood | |
| CN203025135U (en) | Humidity detection device | |
| CN103836681B (en) | The pan detection method and electromagnetic stove of electromagnetic stove | |
| CN108254099A (en) | A kind of temperature sensing circuit of thermistor | |
| CN107145173A (en) | Temperature sampling circuit, temperature sampling control method and household electrical appliance | |
| CN203606003U (en) | Detection device for oil level of oil cup of range hood | |
| CN201885823U (en) | Accurate temperature-measuring circuit of electromagnetic oven | |
| CN202837402U (en) | Thermistor detection apparatus | |
| CN202664977U (en) | Intelligent control DC (direct current) low-voltage electric quilt/blanket and intelligent control circuit thereof | |
| CN204853578U (en) | Multiple spot temperature measurement pot support and applied this pot support's intelligent gas cooking utensils | |
| CN102727021B (en) | Intelligent control DC (direct current) low-voltage electric heating quilt/blanket and intelligent control circuit of intelligent control DC low-voltage electric heating quilt/blanket | |
| CN204188299U (en) | Multichannel IGBT inner NTC high temperature real-time detection circuit | |
| CN206330163U (en) | A kind of Anti-overflow device and electromagnetic oven | |
| CN206062927U (en) | For the temperature measurement circuit of cooking appliance, cooking appliance | |
| CN204269733U (en) | Metallic resistance rate change proving installation within the scope of a kind of continuous temperature | |
| CN205286949U (en) | Automatic system control system that endures of traditional chinese medicine based on SOPC | |
| CN211785914U (en) | MOSFET internal resistance detection circuit | |
| CN203588094U (en) | Simulation temperature control circuit | |
| CN203275494U (en) | Current detection circuit | |
| CN106549273A (en) | A kind of smart jack | |
| CN201724441U (en) | Universal solar water heater controller of two-core sensor and four-core sensor | |
| CN206247645U (en) | A kind of fan heater control circuit | |
| CN204410542U (en) | Electric kettle | |
| CN105988489B (en) | Electric heater Drive Protecting Circuit | |
| CN204286542U (en) | The electrodeless pick-up unit of a kind of condenser type water level |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 528400 Guangdong Province, Zhongshan City Xiaolan Industrial Avenue South Road No. 1 Applicant after: Vatti Co., Ltd. Address before: 528400 Guangdong Province, Zhongshan City Xiaolan Industrial Avenue South Road No. 1 Applicant before: Zhongshan City Huadi Combustion Utensils Co., Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: ZHONGSHAN CITY HUADI COMBUSTION UTENSILS CO., LTD. TO: VATTI CO., LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |