CN202035997U - Pressure detection device of electric pressure cooker - Google Patents
Pressure detection device of electric pressure cooker Download PDFInfo
- Publication number
- CN202035997U CN202035997U CN2011200249764U CN201120024976U CN202035997U CN 202035997 U CN202035997 U CN 202035997U CN 2011200249764 U CN2011200249764 U CN 2011200249764U CN 201120024976 U CN201120024976 U CN 201120024976U CN 202035997 U CN202035997 U CN 202035997U
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- pressure
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- detection device
- electric pressure
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- 238000001514 detection method Methods 0.000 title claims description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 230000008859 change Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 2
- 238000009530 blood pressure measurement Methods 0.000 abstract 3
- 238000010411 cooking Methods 0.000 description 17
- 230000000694 effects Effects 0.000 description 8
- 239000011159 matrix material Substances 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 6
- 235000013305 food Nutrition 0.000 description 6
- 239000011888 foil Substances 0.000 description 5
- 230000006698 induction Effects 0.000 description 4
- 239000000306 component Substances 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to an electric pressure cooker pressure measurement, including upper cover subassembly, fixed slider, driving arm, sealing member, elastic element, its characterized in that: the upper cover component is provided with a vertical cavity, the transmission arm is movably arranged in the cavity, the cavity and the lower end of the transmission arm are sealed through a sealing piece, the elastic element is sleeved on the transmission arm, the upper cover component is fixedly provided with the strain gauge support, the upper end of the strain gauge support is connected with the pressure sensor, and the pressure sensor is positioned above the transmission arm. The utility model discloses a pressure sensor has realized that the pressure in the pot passes through pressure measurement control and demonstration, and the change signal changes in real time along with the pressure change in the pot, converts the change signal into real-time pressure value through electric pressure cooker control system, has simple structure, adopts simple process's standard component, has reduced electric pressure cooker pressure measurement device's cost and can control the pressure in the pot more accurately, but wide application in various electric pressure cookers.
Description
Technical field
The utility model relates to pressure controller of electric pressure cooker, is a kind of pressure detection device for electric pressure cooker specifically.
Background technology
Pressure controlled electric pressure cooker mostly is that pressure switch by the bottom of a pan realizes pressure control in the market, a pressure switch can only be controlled an opening pressure value, and this force value is the pressure sum that pot internal gas pressure and weight produce, and therefore can not accurately detect the air pressure in the pot.Because the not required simultaneously culinary art pressure of different foods or food of the same race but quantity is all different with the time, pressure switch can not continuous detecting and controlled pressure, can not satisfy the consumption demand of consumer to the multiple pressure adjusting.In order to address this problem, people adopt multiple control modes (capacitance sensor, thermistor (temperature) sensor, Hall element, LOAD CELLS, magnetic induction sensor) to detect the interior pressure of pot.Can the continuous detecting pot inner pressure with upper type, but control accuracy is low.For example, ZL200510100475.9 discloses a kind of strain gauge pressure detection method and device, this technical scheme is to utilize the strain gauge LOAD CELLS to detect the displacement that electric hot tray produces under the pot inner pressure effect, pot inner pressure is converted into the electric hot tray displacement, proportionate relationship by displacement and pressure converts a pot interior actual pressure to and realizes pressure control, but the strain gauge LOAD CELLS is subjected to the electric hot tray temperatures involved, control accuracy also weakens, so this technical scheme can not realize that accurate pressure detects and control; And for example ZL200720049043.4 discloses a kind of inductive displacement transducer pressure-detecting device, pressure control structure is identical with principle and ZL200510100475.9, difference just changes to inductive displacement transducer with strain gauge, therefore, can not realize accurate control equally; ZL200820085502.9 discloses a kind of pressure detection device for electric pressure cooker for another example, this technical scheme is strain ga(u)ge to be installed communicate with the pot internal gas pressure on pot cover, described strain ga(u)ge comprises resistance strain gage and elastic matrix, and described resistance strain gage is bonded on the described elastic matrix.This scheme resistor disc be bonded on the described elastic matrix and with pot in water vapour directly communicate, elastic matrix is a metal material, product can not safe insulation, causes the whole cooker body charged easily, has electric shock consumer's potential safety hazard; In addition, utilize resistance strain gage induction elastic matrix to produce STRESS VARIATION, also exist this problems such as the elastic matrix machining accuracy is low, processing technology is complicated, cost height.
Summary of the invention
The purpose of this utility model is, provides a kind of low cost, pressure detection device for electric pressure cooker that accuracy of detection is high for addressing the above problem.The purpose of this utility model is achieved in that
A kind of pressure detection device for electric pressure cooker, include cover assembly, fixedly slide block, transmission arm, seal, flexible member, it is characterized in that: cover assembly is provided with vertical cavity, transmission arm is contained in the cavity versatilely, the lower end of cavity and transmission arm seals by seal, and flexible member is sleeved on the transmission arm, is fixed with the strain gauge support on cover assembly, the upper end of strain gauge support is connected with pressure sensor, and pressure sensor is positioned at the top of transmission arm.
Above-mentioned cover assembly comprises cover plate, inner cap and fixing slide block, has through hole on the described cover plate, and fixedly slide block fixedly is loaded on the through hole of cover plate, and described cavity is located at fixedly on the slide block.
The top of above-mentioned transmission arm is provided with first securing member, realizes transmission arm and fixing being connected of slide block, limits the downward scope of activities of transmission arm.
Fixedly connected by second securing member with fixing slide block in the lower end of above-mentioned strain gauge support.
The upper end of above-mentioned strain gauge support is fixedly connected by the described pressure sensor of the 3rd securing member.
Above-mentioned fixedly slide block can be made one with cover plate.
Above-mentioned pressure sensor is the pressure-strain sheet.
For reducing the influence of environmental factor to pressure sensor, improve pressure precise control and stability, the utility model is provided with compensating circuit on the basis of pressure sensor, by the STRESS VARIATION of compensating circuit correction owing to the generation of factors such as temperature, electromagnetic interference.
Technical conceive of the present utility model is: pressure sensor precision height, the cost height of complete package on the market, but wherein core parts adopt foil gauge to experience STRESS VARIATION on the measured piece.In order to realize electric pressure cooking saucepan high accuracy, pressure detecting control cheaply, the core component of pressure power sensor by the project organization sealing, install, and by making pressure sensor produce stress deformation on the pot inner pressure effect transmission arm, and pressure sensor is exported the signal of telecommunication transfer pressure signal to by the electric pressure cooking saucepan control system.The use of this method is temperature influence not, avoids shock hazard simultaneously; Improve the pressure detecting precision of electric pressure cooking saucepan simultaneously, and can reach accurately demonstration pot inner pressure value by the continuous detecting pot inner pressure, realized the accurate pressure control of electric pressure cooking saucepan; Simultaneously, the simple standard component of pressure sensor adopting process of this technical scheme reduces the cost of pressure detection device for electric pressure cooker greatly.
Therefore, the beneficial effects of the utility model are:
1. the utility model adopts the pressure-strain sheet as pressure sensor, utilizes that a steam pressure changes in the pot, and transmission arm directly effect makes pressure sensor produce STRESS VARIATION, by gathering the STRESS VARIATION signal, and signal is handled the work of control electric pressure cooking saucepan.The utility model adopts pressure sensor, realized that the STRESS VARIATION signal changes and real-time change with pot inner pressure, by the electric pressure cooking saucepan control system STRESS VARIATION signal is converted to real-time force value, judges with this whether pot inner pressure reaches the set force value of user.The user can adjust culinary art required operating pressure and time according to the food situation of reality culinary art, realizes the different culinary art of different foods settings pressure, has guaranteed the mouthfeel and the nutrition of food better;
2. the utility model adopts pressure sensor good stability is experienced the precision height, so the control of electric pressure cooking saucepan pressure is more accurate, precision is higher;
3. the transmission arm of actuating pressure sensor of the present utility model is isolated by the interior steam of seal and pot, reaches the safe insulation effect, stops the danger of user's electric shock; Utilize the interior elastic deformation of effective sealing range of seal, pressure sensor is directly experienced a pot interior steam pressure by transmission arm and is changed, and can not be subjected to the interference of pot interior cooking food.
In addition, it is low, simple in structure that the utility model also has a pressure-detecting device cost, the characteristics that are easy to produce in batches.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment one;
Fig. 2 is the structural representation of the utility model embodiment two;
Fig. 3 is used for structural representation on the electric pressure cooking saucepan for the utility model;
Fig. 4 is used for structural representation on the another kind of electric pressure cooking saucepan for the utility model.
Omitted among the figure and the irrelevant miscellaneous part of the utility model design main points.
The specific embodiment
Below in conjunction with Figure of description and embodiment the specific embodiment of the present utility model is further described.
Embodiment one:
As shown in Figure 1, the pressure detection device for electric pressure cooker of present embodiment, comprise cover assembly, transmission arm 2, seal 7, flexible member 8, strain gauge support 9 is formed, cover assembly comprises cover plate 6, inner cap 12 and fixing slide block 5, have through hole on the cover plate 6, fixedly slide block 5 is positioned on the through hole and with cover plate 6 and fixedlys connected, transmission arm 2 is contained in the cavity of fixing slide block 5 versatilely, fixedly the lower end of slide block 5 and transmission arm 2 is by seal 7 sealings, be set with flexible member 8 on the transmission arm 2, flexible member 8 is a spring in the present embodiment, and transmission arm 2 is connected by first securing member 3 with fixing slide block 5, the scope of activities that restriction transmission arm 2 is downward; Fixedly connected by second securing member 4 with fixing slide block 5 in the lower end of strain gauge support 9, the upper end of strain gauge support 9 is connected with pressure sensor 1 by the 3rd securing member 10, and pressure sensor 1 is positioned at the top of transmission arm 2.
For reducing the influence of environmental factor to pressure sensor, improve pressure precise control and stability, the utility model is provided with compensating circuit on the basis of pressure sensor, by the STRESS VARIATION (not shown) of compensating circuit correction owing to the generation of factors such as temperature, electromagnetic interference.Concrete strain measurement principle is: utilize the bridge balance measuring resistance to change, thereby further obtain strain.Bridge balance (U
BD=0): R
1* R
3=R
2* R
4If R
1～R
4Be four resistance same strain sheets, stressed after,
BDBetween voltage change into: U
BD=E/4 * (Δ R
1/ R
1-Δ R
2/ R
2+ Δ R
3/ R
3-Δ R
4/ R
4)=E/4 * K(ε
1-ε
2+ ε
3-ε
4).Electric bridge connection and temperature-compensating are as follows: the electric bridge connection is: full-bridge connection (four resistance are foil gauge); Half-bridge connection (R
1, R
2Be foil gauge, R
3, R
4Being fixed resistance) foil gauge model, resistance in two kinds of connections be identical as far as possible or approaching, and fixed resistance and foil gauge resistance also should be approaching.Temperature-compensating: because temperature is very big to the resistance change influence, utilize the electric bridge characteristic, can adopt suitable method to eliminate this influence.Same strain sheet R
1, R
2, R
1Be attached to the member stress place, R
2Near the place that do not stress being attached to, environment temperature is to R
1, R
2The change in resistance that causes is identical, is Δ R
T, U then
BD=E/4{(Δ R
1+ Δ R
T)/R
1-Δ R
T/ R
2}=E/4 * K(ε
1+ ε
T-ε
T)=E/4 * K * ε
1As shown in Figure 3.
When present embodiment uses, after producing steam pressure in the electric pressure cooking saucepan, steam pressure makes potted component 7 produce deformation effect and upwards produces displacement in transmission arm 2, make pressure sensor 1 matrix diaphragm produce STRESS VARIATION, be bonded in the real-time reaction diaphragm STRESS VARIATION of sensor (metal strain silk or strain paper tinsel) of matrix diaphragm, and the output signal of telecommunication is given the electric pressure cooking saucepan control system, control system is handled the signal of telecommunication, be converted into the corresponding pressure value, realize the pressure of electric pressure cooking saucepan is carried out continuously accurately control.
Embodiment two:
As shown in Figure 2, present embodiment and embodiment one be different to be in fixing slide block 5 and to make one with cover plate 6, and other structures, operation principle and effect are identical.
When the utility model is applied to electric pressure cooking saucepan, as shown in Figure 3, be the configuration state of the utility model when being applied on a kind of electric pressure cooking saucepan, there is a locking member 11 interior pot 13 tops, cooperate fixing with inner cap 12, by sealing ring 14 and interior pot 13 lock sealings, forming the variation that the utility model induction kettle internal pressure is set on the structural member of seal chambers with interior pot 13.
As shown in Figure 4, be the configuration state of the utility model when being applied on the another kind of electric pressure cooking saucepan, be pot cover 15 tight lock outer pot 16 modes with electric pressure cooking saucepan difference shown in Figure 3, seal by sealing ring 14, the variation of the utility model induction kettle internal pressure is set on pot cover 15.
The above only is preferred embodiment of the present utility model, is not that structure of the present utility model is done any type of restriction.Every foundation technical spirit of the present utility model is to the above any simple modification done of example of executing, and equivalent variations and modification all fall in the protection domain of the present utility model.
Claims (7)
1. pressure detection device for electric pressure cooker, include cover assembly, transmission arm (2), seal (7) and flexible member (8), it is characterized in that: cover assembly is provided with vertical cavity, transmission arm (2) is contained in the cavity versatilely, the lower end of cavity and transmission arm (2) is by seal (7) sealing, flexible member (8) is sleeved on the transmission arm (2), on cover assembly, be fixed with strain gauge support (9), the upper end of strain gauge support (9) is connected with pressure sensor (1), and pressure sensor (1) is positioned at the top of transmission arm (2).
2. pressure detection device for electric pressure cooker according to claim 1, it is characterized in that described cover assembly comprises cover plate (6), inner cap (12) and fixing slide block (5), described cover plate has through hole on (6), fixedly slide block (5) fixedly is loaded on the through hole of cover plate (6), and described cavity is located at fixedly on the slide block (5).
3. pressure detection device for electric pressure cooker according to claim 1 and 2 is characterized in that described transmission arm (2) is connected by first securing member (3) with fixing slide block (5).
4. pressure detection device for electric pressure cooker according to claim 2 is characterized in that the lower end of described strain gauge support (9) fixedlys connected by second securing member (4) with fixing slide block (5).
5. according to claim 1 or 4 described pressure detection device for electric pressure cooker, it is characterized in that fixedlying connected with described pressure sensor (1) by the 3rd securing member (10) in the upper end of described strain gauge support (9).
6. pressure detection device for electric pressure cooker according to claim 2 is characterized in that described fixedly slide block (5) and cover plate (6) make one.
7. pressure detection device for electric pressure cooker according to claim 1 is characterized in that described pressure sensor (1) is the pressure-strain sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200249764U CN202035997U (en) | 2011-01-26 | 2011-01-26 | Pressure detection device of electric pressure cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200249764U CN202035997U (en) | 2011-01-26 | 2011-01-26 | Pressure detection device of electric pressure cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202035997U true CN202035997U (en) | 2011-11-16 |
Family
ID=44963474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200249764U Expired - Lifetime CN202035997U (en) | 2011-01-26 | 2011-01-26 | Pressure detection device of electric pressure cooker |
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| Country | Link |
|---|---|
| CN (1) | CN202035997U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519659A (en) * | 2011-12-02 | 2012-06-27 | 美的集团有限公司 | Pressure detection device and electric pressure cooker adopting same |
| CN102987908A (en) * | 2012-12-28 | 2013-03-27 | 广东洛贝电子科技有限公司 | Electric pressure cooker capable of accurately controlling pressure, and pressure control method and pressure control system thereof |
| CN103968992A (en) * | 2013-01-24 | 2014-08-06 | 美的集团股份有限公司 | Pressure sensing device and pressure cooker with device |
| CN104433777A (en) * | 2013-04-18 | 2015-03-25 | 张柯 | Multiple-parameter alarming method of household electric pressure cooker |
| CN104515641A (en) * | 2013-09-27 | 2015-04-15 | 美的集团股份有限公司 | Pressure sensor for pressure cooking utensil, and pressure cooking utensil |
| CN104545429A (en) * | 2013-04-18 | 2015-04-29 | 张柯 | Domestic multi-diameter warning electric pressure cooker |
| CN105996741A (en) * | 2016-08-04 | 2016-10-12 | 珠海格力电器股份有限公司 | Detector fixing assembly, cooker and inner cover assembly of cooker |
| CN107702838A (en) * | 2017-08-14 | 2018-02-16 | 思达文电器（深圳）有限公司 | A kind of new high-pressure pressure sensor and electric pressure cooking saucepan |
| CN108272339A (en) * | 2018-03-24 | 2018-07-13 | 深圳市信为科技发展有限公司 | Displacement sensor, electric pressure cooking saucepan and cooking control method |
| CN111157349A (en) * | 2020-01-21 | 2020-05-15 | 莱茵技术（上海）有限公司 | Comprehensive testing device for pressure cooker |
| CN112362219A (en) * | 2020-10-20 | 2021-02-12 | 佛山市朗盛科技有限公司 | Pressure sensor based on metal shielding inductance type pressure cooker |
-
2011
- 2011-01-26 CN CN2011200249764U patent/CN202035997U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519659A (en) * | 2011-12-02 | 2012-06-27 | 美的集团有限公司 | Pressure detection device and electric pressure cooker adopting same |
| CN102987908B (en) * | 2012-12-28 | 2015-06-10 | 广东洛贝电子科技有限公司 | Electric pressure cooker capable of accurately controlling pressure, and pressure control method and pressure control system thereof |
| CN102987908A (en) * | 2012-12-28 | 2013-03-27 | 广东洛贝电子科技有限公司 | Electric pressure cooker capable of accurately controlling pressure, and pressure control method and pressure control system thereof |
| CN103968992A (en) * | 2013-01-24 | 2014-08-06 | 美的集团股份有限公司 | Pressure sensing device and pressure cooker with device |
| CN104433777A (en) * | 2013-04-18 | 2015-03-25 | 张柯 | Multiple-parameter alarming method of household electric pressure cooker |
| CN104545429A (en) * | 2013-04-18 | 2015-04-29 | 张柯 | Domestic multi-diameter warning electric pressure cooker |
| CN104515641A (en) * | 2013-09-27 | 2015-04-15 | 美的集团股份有限公司 | Pressure sensor for pressure cooking utensil, and pressure cooking utensil |
| CN104515641B (en) * | 2013-09-27 | 2019-07-02 | 美的集团股份有限公司 | Pressure sensor and pressure cooking appliance for pressure cooking appliance |
| CN105996741A (en) * | 2016-08-04 | 2016-10-12 | 珠海格力电器股份有限公司 | Detector fixing assembly, cooker and inner cover assembly of cooker |
| CN107702838A (en) * | 2017-08-14 | 2018-02-16 | 思达文电器（深圳）有限公司 | A kind of new high-pressure pressure sensor and electric pressure cooking saucepan |
| CN108272339A (en) * | 2018-03-24 | 2018-07-13 | 深圳市信为科技发展有限公司 | Displacement sensor, electric pressure cooking saucepan and cooking control method |
| CN111157349A (en) * | 2020-01-21 | 2020-05-15 | 莱茵技术（上海）有限公司 | Comprehensive testing device for pressure cooker |
| CN112362219A (en) * | 2020-10-20 | 2021-02-12 | 佛山市朗盛科技有限公司 | Pressure sensor based on metal shielding inductance type pressure cooker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: MIDEA GROUP CO., LTD. Free format text: FORMER NAME: MEIDI GROUP CO. LTD. |
|
| CP03 | Change of name, title or address |
Address after: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28 Patentee after: MIDEA GROUP Co.,Ltd. Address before: 528311 Beijiao, Foshan, Shunde District, the town of Guangdong, the United States Avenue, No. 6 Patentee before: Midea Group |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111116 |