Summary of the invention
It is an object of the invention to avoid the deficiencies in the prior art, a kind of intelligent pressure regulating pot and its control method are provided.BaseIn single-chip microcontroller by closed-loop control, the pressure in pot is automatically controlled during the cooking process, and then automatically control the boiling of liquid in potPoint, so that being cooked according to scheduled boiling point.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of intelligent pressure regulating pot, by pot and pot cover groupAt, it is characterised in that: the pressure adjustable pot bottom of pot body is equipped with control system, such as biggish cookware, and console can also be separately provided,Control system includes single-chip microcontroller, is equipped with sensor module in pot body, is pressure transducer or temperature sensor, to the pressure in potOr temperature is acquired, sensor module connects analog-digital converter ADC, and analog-digital converter connects single-chip microcontroller, is turned by ADCChange, transfers data to single-chip microcontroller wait be further processed；Pot nside is connect by connecting tube with filter inlet, is prevented trueSky pump blocks, and the inlet end of the outlet access vacuum pump of filter, single-chip microcontroller connects and control relay, relay settingIn vacuum pump power supply circuit, single-chip microcontroller controls vacuum pump work by the disconnection and closure for controlling relay, to adjustAir pressure in pot；Single-chip microcontroller connects solenoid valve control module, and solenoid valve control module connects solenoid valve, and solenoid valve is by single-chip microcontroller controlSystem, solenoid valve is connected on vacuum pump pipeline between vacuum pump and pot body, to control the on-off of vacuum pump pipeline；Single-chip microcontrollerIt is also respectively connected with power module, display, buzzer siren, operation button and LED light, the display, buzzing alarmDevice, LED light are all controlled by single-chip microcontroller, the display show current kettle temperature, predetermined culinary art boiling point, cooking timing andCook the information such as remaining time, the buzzer siren SCM system is started to work, culinary art starts, cooking timing terminates orBuzzing alarm, the information such as described LED light feedback system energization are carried out whens person's kettle temperature or pressure extremely raising etc..The operation button can adjust at any time during the cooking process to carry out input, the cooking timing input of culinary art boiling pointCook boiling point.The power module is the single-chip microcontroller, vacuum pump, solenoid valve, relay, sensor power supply.
The intelligent pressure regulating pot heating method is electric heating or electromagnetic heating, controls heater circuit by single-chip microcontroller,When culinary art finishes, heating power supply is automatically cut off.
If heating method is open firing, SCM system is the culinary art for controlling kettle temperature or pressure and settingTime does not control heater circuit.
The control method of the intelligent pressure regulating pot, includes the following steps:
A. pre- cooking food and water are put into pot body, tightening pot cover is to guarantee leakproofness, it is ensured that negative pressure or direct draught allIt does not leak；
B. open the pressure adjustable pot control system switch, power module is powered, by operation button set scheduled culinary art boiling point withAnd cooking time, the boiling point of setting are transferred to single-chip microcontroller and are output to display by single-chip microcontroller and show, start control system, openBegin to cook；
Using pressure transducer, data processing is carried out by single-chip microcontroller, calculates the boiling point under current pressure, by the boiling point with setFixed boiling point compares, and the boiling point values are output to display and are shown, single if the boiling point is lower than the boiling point of settingSolenoid valve under the control of piece machine is closed, and relay disconnects, vacuum air pump inoperative；Once the boiling point is more than the boiling point of setting, then singleThe solenoid valve of piece machine control is opened, and relay closure, vacuum pump is started to work, to reduce pressure in pot, so that boiling point reduces, whenBoiling point is again decreased to setting value or less, and then solenoid valve is closed, and relay disconnects, and vacuum pump stops working, and has been thusly-formed one kindClosed-loop control, so that the boiling point in pot is stable at the boiling point of setting；
Using temperature sensor, single-chip microcontroller receives the kettle temperature of actual measurement, which is compared with the boiling point of setting, whenWhen the temperature is lower than setting boiling point, the solenoid valve under single-chip microcontroller control is closed, and relay disconnects, vacuum air pump inoperative, once it shouldTemperature is more than the boiling point of setting, then single-chip microcontroller control solenoid valve is opened, and relay closure, vacuum pump is started to work, to reduce potInterior pressure, so that boiling point reduces, when observed temperature is again decreased to setting value or less, then solenoid valve is closed, and relay disconnects, verySky pump stops working, and a kind of closed-loop control has been thusly-formed, so that the cooking temp in pot is stable at the boiling point of setting；
C single-chip microcontroller receives pressure in the pot that pressure transducer is surveyed in pot, carries out data processing, calculates under current pressureBoiling point compares the boiling point of the boiling point and setting, and the boiling point values are output to display and are shown, if the low boiling pointIn the boiling point of setting, then the solenoid valve under single-chip microcontroller control is closed, vacuum air pump inoperative；When boiling point is more than the boiling point of setting, listThe solenoid valve of piece machine control is opened, and vacuum pump is started to work, to reduce pressure in pot, so that boiling point reduces, when boiling point drops againAs low as then solenoid valve is closed below setting value, vacuum pump stops working, and a kind of closed-loop control has been thusly-formed, so that the boiling in potPoint and the boiling point of setting are consistent；
D. it can according to need in the process of cooking and culinary art boiling point adjusted by operation button at any time, via step c, culinary art temperatureDegree is by adjusting stable culinary art boiling point after adjustment again；
E. further include that timing is cooked: scheduled cooking time being inputted by operation button, which is sent to single-chip microcontroller, it is singlePiece machine control display show timing, and show culinary art remaining time, periodically terminate, single-chip microcontroller control buzzer siren intoRow alarm, LED light flashing.
The beneficial effects of the present invention are: not only having the function of conventional high-tension pot, but also do not limited by local atmospheric pressure,Boiling point can be set as needed to be cooked, realize digitalization precision control, can also repeatedly adjust as needed during the cooking processWhole predetermined boiling point realizes the effect of reducing nutrient loss or locking optimum taste.In addition most suitable boiling also may be selectedPoint tanning Chinese medicine etc., reduces the loss of effective component.
Embodiment 1, intelligent pressure regulating pot and its control method.In Shanghai, boiling point is 100 DEG C, in order to which beef noodle is made orchidThe peculiar taste in state, it is a critically important factor that culinary art beef noodle soup is carried out under 95 DEG C of boiling points.
Beef, condiment and water etc. are put into pot in proportion, tightening pot cover is to guarantee leakproofness, it is ensured that in negative pressure or justPressure does not leak.
Power supply is powered and opens system switching, sets 95 DEG C of target boiling point by operation button, display display setting95 DEG C of boiling point, start control system, heating method is open firing, starts to cook, and pressure transducer is used in pot, just starts potInterior temperature is lower than 95 DEG C, and the temperature that sensor detects passes controller back and 95 DEG C of setting are compared, lower than target boiling point,Controller controls solenoid valve, vacuum pump (vacuum pump selects frequency modulation motor vacuum pump) power-off, and solenoid valve is closed, and frequency modulation motor is trueEmpty air pump inoperative, at this time since pot seals and constantly heating, kettle temperature constantly increase, at a time, temperature reaches and omitsMicro- to be higher than 95 DEG C, 95 DEG C of the temperature information from sensor that controller receives at this time and setting are compared, and are higher than settingTemperature, the solenoid valve of controller control at this time, frequency modulation motor vacuum pump are powered, and solenoid valve is opened, and frequency modulation motor vacuum pump is started to work,Pressure in pot is reduced, and then reduces water boiling point or cooking temp in pot, when controller is received again by temperature signal lower than 95 DEG CWhen, it controls solenoid valve and the power-off of frequency modulation motor vacuum pump, solenoid valve closes, frequency modulation vacuum pump stops working.Material is thus formedDynamic equilibrium so that kettle temperature be maintained at 95 DEG C (temperature is the water boiling point in current pot under pressure) it is small range of up and downFluctuation is to realize with the purpose of 95 DEG C of boiling point Boiled beef.
Culinary art finishes, and uncaps the process for taking out food as ordinary high pressure pot, cannot uncap at once, to prevent endangeringDanger.