CN2850471Y - Pressure testing device of electric pressure cooker - Google Patents
Pressure testing device of electric pressure cooker Download PDFInfo
- Publication number
- CN2850471Y CN2850471Y CN 200520065552 CN200520065552U CN2850471Y CN 2850471 Y CN2850471 Y CN 2850471Y CN 200520065552 CN200520065552 CN 200520065552 CN 200520065552 U CN200520065552 U CN 200520065552U CN 2850471 Y CN2850471 Y CN 2850471Y
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- pressure
- strain gauge
- central controller
- pot
- electric pressure
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Abstract
The utility model relates to a pressure testing device of an electric pressure cooker and aims to detect and control accurately and continuously pressure in the electric pressure cooker. In the utility model, a strain gauge is arranged under a heating disk of the electric pressure cooker; a transmission arm is utilized to sense the displacement quantity of the heating disk so that an elastic base of the strain gauge is deformed. Because of the deformed elastic base, the electrical characteristic of sensitive foil material is immediately changed, generates controllable electrical signals and sends the controllable electrical signals to a central controller. Through the calculation of the central controller, the central controller outputs control signals and display signals. The pressure testing device of the utility model comprises the strain gauge, the transmission arm, the central controller, etc.; the strain gauge is arranged under the heating disk and is fixed through proper methods.
Description
Technical field:
The utility model relates to the electric pressure cooking saucepan technical field, more particularly relates to a kind of pressure-detecting device of electric pressure cooking saucepan.
Background technology:
Controlled for guaranteeing the pressure in the electric pressure cooking saucepan, in other words, do not surpass certain dangerous pressure value in order to make the pressure in the pot, people have adopted many controls, have detected the method for pot inner pressure.It is the pressure control device that 200320116811.5 Chinese patent has disclosed a kind of electric pressure cooking saucepan that application number is arranged.Its scheme is: pressure arm 33 is installed on outer pot, is equipped with on the pressure arm and adjusts screw mandrel 24, pressure switch 25 is installed on the heat-generating disc 22 by pressure switch fixed mount 26.Between described pressure switch 25 and the pressure switch fixed mount 26 heat insulating mattress is installed.Its operation principle is: as shown in Figure 1, electric pressure cooking saucepan is in running order, when the pressure of 29 li in interior pot constantly increases, thereby pot 29 moves downward under the effect of pot inner pressure in impelling, the heat-generating disc 22 of pot 29 bottoms is under the effect of interior pot 29 in being arranged on simultaneously, drive pressure switches 25 by pressure switch fixed mount 26 and also move downward, when the shake-up sheet 51 of pressure switch 25 is fixed on adjustment screw mandrel 24 on the pressure arm 33 when touching, pressure switch 25 can be cut off the electricity supply automatically; When the pressure in the interior pot 29 reduced, the elastic device that interior pot 29 and heat-generating disc 22 are set under the heat-generating disc upwards resetted, thereby made pressure switch 25 and adjust screw mandrel 24 disengagings.Though aforementioned means can play the effect of controlled pressure pot pot inner pressure, but owing to adopt contact switch, can only detect control to a force value point, can not carry out successional detection control, can not adjust, be provided with culinary art pressure according to different culinary art things to the force value in the pot.
Summary of the invention:
The purpose of this utility model is to overcome the deficiencies in the prior art part, and a kind of device that can accurately detect, control to continuity the pot inner pressure of electric pressure cooking saucepan is provided.
We know, the pressure in the electric pressure cooking saucepan is interior all relevant by the factors such as character of cooking with temperature, pot in the pot, that is to say that the height of kettle temperature is not unique factor that influences pot inner pressure.The pot deflection is approximated to direct proportion with pressure in the pot within the pressure cooker; And when the pressure cooker pot inner pressure raises, interior pot meeting dilatancy; Particularly, when the heat-generating disc bottom of electric pressure cooking saucepan adopts elasticity reset device to be installed on the pressure cooker outer pot, owing to exist certain between heat-generating disc and the pressure cooker outer pot relative to space that easy on and off moves, the deflection of interior pot can very directly be reflected in the displacement that heating plate moves down.Therefore, directly detect the displacement that heating plate moves down, the pot inner pressure of pot in just can directly detecting approx by continuity.
For achieving the above object, the utility model provides a kind of and the diverse pressure-detecting device of prior art.This device mainly is to adopt strain gauge as detection means, detects the displacement variable of heat-generating disc.Strain gauge mainly is made of substrate glue, responsive foil, elastic matrix etc., when elastic matrix is out of shape because of the external force effect, can makes attached to the responsive foil on the elastic matrix and be out of shape thereupon, and correspondingly, the electrical characteristics of responsive foil also change thereupon.This device detection method be: a certain appropriate location in space is mounted with strain gauge between pressure cooker shell and interior pot, and utilizes a transmission arm to come the displacement of perception heat-generating disc.When heat-generating disc was promoted to move down by interior pot, the elastic matrix that transmission arm will promote strain gauge made its distortion; The distortion of elastic matrix also changes the electrical characteristics of responsive foil thereupon; The controlled signal of telecommunication that produces because of electrical property change flows to central controller; Central controller gives computing to the signal of telecommunication that receives, output control signal and demonstration signal.
Strain gauge is the displacement of sense object accurately, usually as the weight sensor of measurement instrument or be applied to detect the sensor of the dependent variable of building, building element.Be applied in the pressure that detects on the electric pressure cooking saucepan in the pot, can improve its accuracy of detection and hierarchical detection precision greatly, and can continuity detect the force value of controlling in the electric pressure cooking saucepan, compared with prior art, produced beyond thought technique effect.
In order to realize above-mentioned effect, structure of the present utility model is: a kind of pressure-detecting device of electric pressure cooking saucepan comprises strain gauge, transmission arm, central controller etc.A certain appropriate location, space between pressure cooker shell and interior pot is provided with strain gauge and transmission arm, and by the fixing strain gauge of suitable method, for example strain gauge is fixed on the sidewall or the outer pot bottom of outer pot, shell.
Strain gauge is arranged on the heat-generating disc below, and an end of transmission arm contacts with the elastic matrix of strain gauge, and the other end contacts with the bottom surface of heating plate; Transmission arm can be a support arm that is fixed on the strain gauge elastic matrix, also can be the support arm that is fixed on the heat-generating disc bottom.Heat insulation preferably is set, to reduce of the negative effect of heating plate heat to strain gauge between the elastic matrix of transmission arm and strain gauge.Certainly, if transmission arm itself is nonmetal heat-barrier material manufacturing, so, heat insulation just is not the parts that must be provided with.
Central controller places on the outer pot sidewall, certainly, also can be placed on the cooker cover portion or the bottom of pressure cooker.Strain gauge is electrically connected with central controller; Central controller is electrically connected with the electronic exhaust valve device of display device, pressure cooker; Simultaneously, signal such as central controller and remote controllers such as computer controlling center, remote controller, household intelligent control module is connected.
Periphery at interior pot can be provided with a plurality of strains simultaneously and take into account corresponding transmission arm.Each strain gauge all is electrically connected with central controller.
Said apparatus owing to adopted strain gauge, can continuity detect each micro displacement amount of heat-generating disc, detects and control pot inner pressure thereby can implement continuity easily; Owing to adopted transmission arm to respond to the displacement of heat-generating disc between strain gauge and the heat-generating disc, and be provided with heat insulation, strain gauge matrix and transmission arm are separated, thereby avoid the high-temperature region of pressure cooker, make the strain gauge working stability, the life-span improves, and also can reduce the temperature error of strain gauge.Certainly, if the temperature tolerance of strain gauge is good, also can be without transmission arm, and directly wall outside strain gauge and the interior pot is directly contacted with heating plate, also be one of application scheme that is equal to.Because strain gauge can continuity is detected and export the corresponding signal of telecommunication, thereby makes the central controller continuity implement the monitoring pot inner pressure, as implementing to cut off the electricity supply, open exhaust valve etc.; Central controller also can help to observe intuitively the pressure that shows in the pot.If central controller is connected with the remote controllers signal, can also realize remote monitoring function, thereby for intelligent residence is managed, design is provided convenience.Simultaneously,, the pot inner pressure parameter of preset parameters and strain gauge continuous detecting is made comparisons, can oppositely control the pressure in the pot again by central controller because the different needed pressure of food is different.
On the basis of said structure, can also be within pressure cooker pot peripheral, perhaps on the pot cover inner surface, temperature sensor is set, be used to detect the temperature in the pot.Temperature sensor is electrically connected with central controller, thereby, make central controller implement control and detection from several aspects such as pressure, temperature to pressure cooker.
Description of drawings:
Below in conjunction with accompanying drawing, scheme of the present utility model is described further,
Fig. 1 is prior art constructions figure;
Fig. 2 is a structural representation of the present utility model.
Among the figure: 1 pressure cooker, 2 inner tube of pressure cooker, 3 pressure cooker outer pots, 4 pressure cooker heat-generating discs, 5 strain gauges, 6 strain gauge fixed bars, 7 transmission arms, 8 pressure cooker central controllers, 9 temperature sensors, 10 electronic exhaust valves, 11 pot covers, 12 pressure cooker heat-generating disc back-moving spring packing rings, 13 pressure cooker heat-generating disc leads, 14 pressure cooker chassis.
Specific embodiments:
As shown in Figure 2, pot 2, outer pot 3, heat-generating disc 4, strain gauge 5, strain gauge fixed bar 6, transmission arm 7, pressure cooker central controller 8, temperature sensor 9, electronic exhaust valve 10, pot cover 11, heat-generating disc reseting spring leaf 12, heat-generating disc lead 13, chassis 14 etc. in pressure cooker 1 comprises.The heat-generating disc bottom is provided with by the relatively-stationary back-moving spring packing ring 12 of lead.When pressure cooker was not heated, heat-generating disc back-moving spring packing ring 12 was a base support heat-generating disc 4 with the outer pot; When the pot inner pressure rising, interior pot 2 dilatancies promote heat-generating disc 4 and move down, and heat-generating disc back-moving spring packing ring 12 is pressed downward and contracts, and heat-generating disc lead 13 moves down in the through hole of outer pot 3; When pot inner pressure diminished, heat-generating disc upwards resetted under the effect of elastic washer 12.
Strain gauge 5 is between pressure cooker outer pot 3 bottoms and chassis 14, and the strain gauge fixed bar 6 that an end wherein is fixed on outer pot 3 sidewalls is fixing; Transmission arm 7 one ends are fixed on strain gauge 5 elastic matrixes, and the other end contacts with the heat-generating disc bottom.Central controller 7 places on the sidewall of outer pot 3, certainly, also can be placed on the pot cover 11 or chassis 14 of pressure cooker.Strain gauge 5 is electrically connected with central controller 7.
Temperature sensor 8 is set to measure kettle temperature at pot cover 11.Temperature sensor 8 also is electrically connected with central controller 7.
In order to reduce temperature in the pressure cooker, between transmission arm 7 and heat-generating disc 4, be provided with heat insulation to the temperature effect of strain gauge.
In order to make pressure or temperature in the pressure cooker not surpass dangerous values or not surpass the controlling value that is provided with in advance, on the pot cover 10 of pressure cooker 1, electronic exhaust valve 9 is set.Electronic exhaust valve 9 is controlled by central controller 7.When exhaust valve 9 steam discharges, the temperature and pressure in the pot descends simultaneously.
The embodiment of the above is preferred embodiment of the present utility model only, is not to limit practical range of the present utility model with this, so the equivalence that all shapes according to the utility model, structure and principle are done changes, all should be covered by in the protection domain of the present utility model.
Claims (8)
1, a kind of pressure-detecting device of electric pressure cooking saucepan is characterized in that: a certain appropriate location between shell and interior pot is provided with strain gauge and transmission arm; One end of transmission arm contacts with the heat-generating disc bottom surface, and the other end contacts with the elastic matrix of strain gauge; Strain gauge is electrically connected with the central controller of pressure cooker.
2, the pressure-detecting device of a kind of electric pressure cooking saucepan according to claim 1 is characterized in that: also be provided with heat insulation between the elastic matrix of transmission arm and strain gauge.
3, the pressure-detecting device of a kind of electric pressure cooking saucepan according to claim 2 is characterized in that: also be provided with electronic exhaust valve on the pot cover, electronic exhaust valve is electrically connected with the central controller of pressure cooker.
4, the pressure-detecting device of a kind of electric pressure cooking saucepan according to claim 3 is characterized in that: also be provided with temperature sensor in the pressure cooker, temperature sensor is electrically connected with the central controller of pressure cooker.
5, according to the pressure-detecting device of claim 1,2,3 or 4 described a kind of electric pressure cooking saucepans, it is characterized in that: central controller is electrically connected with display device.
6, the pressure-detecting device of a kind of electric pressure cooking saucepan according to claim 5 is characterized in that, central controller is connected with the remote controllers signal.
7, according to the pressure-detecting device of claim 1,2,3 or 4 described a kind of electric pressure cooking saucepans, it is characterized in that: between pot bottom and the heat-generating disc bottom elasticity reset device is installed also outside.
8, the pressure-detecting device of a kind of electric pressure cooking saucepan according to claim 7 is characterized in that: elasticity reset device is spring or elastic washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520065552 CN2850471Y (en) | 2005-10-10 | 2005-10-10 | Pressure testing device of electric pressure cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520065552 CN2850471Y (en) | 2005-10-10 | 2005-10-10 | Pressure testing device of electric pressure cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2850471Y true CN2850471Y (en) | 2006-12-27 |
Family
ID=37584437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520065552 Expired - Lifetime CN2850471Y (en) | 2005-10-10 | 2005-10-10 | Pressure testing device of electric pressure cooker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2850471Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100385219C (en) * | 2005-10-25 | 2008-04-30 | 广东伊立浦电器股份有限公司 | Pressure detection method and apparatus for electric pressure cooker |
-
2005
- 2005-10-10 CN CN 200520065552 patent/CN2850471Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100385219C (en) * | 2005-10-25 | 2008-04-30 | 广东伊立浦电器股份有限公司 | Pressure detection method and apparatus for electric pressure cooker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080430 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |