CN114073402A

CN114073402A - Pressure cooker

Info

Publication number: CN114073402A
Application number: CN202010839273.0A
Authority: CN
Inventors: 康从涛; 黎健泉; 伍雄基; 管永斌; 姚健
Original assignee: Guangdong Master Group Co ltd
Current assignee: Guangdong Master Group Co ltd
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2022-02-22
Also published as: WO2022036773A1

Abstract

The invention discloses a pressure cooker, which comprises a cooker body, a cooker cover, a programmable micro control unit, a regulating valve and a sensor, wherein one end of the sensor extends into the cooker body, the sensor transmits an air pressure signal to the programmable micro control unit, the programmable micro control unit sets a preset air pressure value through a program, the pressure cooker also comprises a motor and a transmission mechanism, the motor controls the regulating valve to move through the transmission mechanism, and the programmable micro control unit sends a signal for starting or stopping rotation to the motor according to a certain rule according to the air pressure in the cooker body detected by the sensor, so that the regulating valve is controlled to be opened or closed.

Description

Pressure cooker

Technical Field

The invention relates to the field of kitchenware, in particular to a pressure cooker.

Background

In the prior art, for example, in an intelligent pressure control pressure cooker with patent number ZL 201811217146.6, a preset air pressure value of a top-opening safety valve in a cooker body of the pressure cooker is a fixed value. When the user uses the pressure cooker, no matter what kind of food is stewed, the pressure inside the cooker body is a fixed air pressure. In life, however, there are a wide variety of foods to be cooked, and the optimum cooking pressure required for different types of foods is likely to vary. If different types of food (such as rice and bones) are cooked by using the pressure cooker which implements the prior art, the cooking time is possibly too long or too short, or the nutrition of the food is lost and the taste is deteriorated.

Disclosure of Invention

In order to solve the defects of the prior art, the invention provides a pressure cooker which comprises a cooker body, a cooker cover, a programmable micro control unit, a regulating valve and a sensor, wherein one end of the sensor extends into the cooker body, and the sensor generates a signal according to the temperature and the pressure in the cooker body and transmits the signal to the programmable micro control unit.

The main invention points of the invention are that: the motor controls the regulating valve to move through the transmission mechanism. The optimal or relatively reasonable air pressure value required for cooking different recipes can be preset according to different recipe programs in a programming mode; the setting can be completed by setting the programmable micro control unit through the adjusting keys on the panel of the pressure cooker, and the control panel is provided with a display screen which can display the set pressure value and the real-time pressure value in the cooker. When the air pressure in the pot body reaches or exceeds a preset air pressure value, the sensor transmits an air pressure signal to the programmable micro control unit, the programmable micro control unit generates a signal for starting the motor, and the motor opens the regulating valve through the transmission mechanism, so that the gas in the pot body is discharged, and the air pressure in the pot body is reduced. In order to avoid the damage to the regulating valve caused by excessive air leakage due to overlarge air leakage opening of the regulating valve or too large rotating stroke of the regulating valve, the rotating number of turns of the motor can be set through an editing program at the stage so as to limit the rotating stroke of the regulating valve within a safe range, and when the set stroke is reached, the motor stops rotating. And then, when the air pressure value in the pot body is equal to or slightly lower than a preset pressure value, the sensor transmits an air pressure signal to the programmable micro-control unit, the programmable micro-control unit generates a signal for starting the motor to rotate reversely, and the motor closes the regulating valve through the transmission mechanism. Also, in order to ensure that the stroke of the rotation of the regulating valve is within the safe range, at this stage, the number of reverse rotations of the motor can be set through the editing program so as to ensure that the stroke of the rotation of the regulating valve is within the safe range, and when the set stroke is reached, the motor stops rotating.

The technical effects or functions of the invention are as follows: the air pressure values required for cooking different food materials can be preset through software programming, such as a menu program, or through adjusting keys on a panel and the like.

Drawings

FIG. 1 is a first general structural diagram of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

FIG. 4 is an exploded view of the present invention;

FIG. 5 is a schematic diagram of the micro control unit, motor, and transmission mechanism of the present invention;

FIG. 6 is a first schematic diagram of the combination of the micro control unit, the motor, the transmission mechanism and the regulating valve of the present invention;

FIG. 7 is a second schematic diagram of the combination of the micro control unit, the motor, the transmission mechanism and the regulating valve of the present invention;

FIG. 8 is a cross-sectional view of a regulator valve of the present invention;

FIG. 9 is a second cross-sectional view of the regulator valve of the present invention;

FIG. 10 is a third cross-sectional view of a regulator valve of the present invention;

FIG. 11 is a fourth exploded view of the regulator valve of the present invention;

FIG. 12 is an exploded view of a fifth embodiment of the regulator valve of the present invention;

FIG. 13 is a first view of the assembly of the pressure regulating rotating wheel and the lifting member of the present invention;

FIG. 14 is a second view of the assembly of the pressure regulating rotating wheel and the lifting member of the present invention.

In the figure, 1 pot body, 2 pot cover, 31 micro control unit, 32 motor, 321 driving gear, 33 driving crown gear, 34 driving gear, 4 regulating valve, 41 pressure relief cover, 411 exhaust hole, 412 hole plug, 42 pressure regulating rotating wheel, 421 sliding point, 43 lifting part, 431 step gear, 441 limit spring, 442 pressure regulating spring, 45 elasticity regulating part, 46 exhaust pipe, 47 limit sheet, 5 display screen, 51 regulating button and 6 sensor.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention.

See fig. 1-14. A pressure cooker comprises a cooker body 1, a cooker cover 2, an editable micro control unit 31, a regulating valve 4 and a sensor 6, wherein the sensor is preferably a temperature and pressure sensor 6, and one end of the temperature and pressure sensor 6 extends into the cooker body 2. The temperature and pressure sensor 6 generates signals according to the temperature and pressure inside the pan body 1 and transmits them to the programmable micro control unit 31. A motor 32 and a transmission mechanism (comprising a driving gear 321, a transmission crown gear 33 and a transmission gear 34), wherein the motor 32 controls the movement of the regulating valve 4 through the transmission mechanism.

See fig. 5-7. The transmission mechanism comprises a driving gear 321, a transmission crown gear 33 and a transmission gear 34, the transmission crown gear 33 is respectively meshed with the driving gear 321 and the transmission gear 34, the motor 32 drives the driving gear 321 to rotate, the driving gear 321 drives the transmission crown gear 33 to rotate, and the transmission crown gear 33 further drives the transmission gear 34 to rotate.

See fig. 8-14. The regulating valve includes a pressure relief cover 41, a pressure regulating rotary wheel 42, a lifting member 43, an elastic member (including a stopper spring 441, a pressure regulating spring 442, and an elastic force regulating member 45), and an exhaust pipe 46. An exhaust hole 411 is formed at the top of the pressure relief cover 41, the exhaust hole 411 is used for exhausting hot air in the pot body 1, a hole plug 412 is further arranged in the pressure relief cover 41, and the hole plug 412 is used for blocking the exhaust pipe 46. The pressure release cover 41 is connected to an elastic member and covers the upper side of the elevation member 43, and the pressure regulating rotation wheel 42 can rotate to adjust the elastic force of the elastic member, so that the elastic member can support the pressure release cover 41 and the elevation member 42 to reciprocate along the direction of the exhaust pipe. A gear is disposed on the outer circumference of the pressure regulating rotary wheel 42, and the gear is engaged with the transmission gear 34. The inner wall of the pressure regulating rotating wheel 42 is provided with a sliding point 421, the pressure regulating rotating wheel 42 is sleeved on the outer wall of the lifting part 43, the outer wall of the lifting part 43 is provided with step teeth 431 which are sequentially arranged from low to high, the sliding point 421 on the inner wall of the pressure regulating rotating wheel 42 is meshed and connected with the step teeth 431 on the outer wall of the lifting part, every time the sliding point 421 slides one tooth socket on the step teeth 431 on the outer wall of the lifting part, the elastic force of the elastic part can generate a change, and then the lifting part 43 moves one path along the direction of the exhaust pipe 46 under the elastic force support of the elastic part. The elastic member includes a stopper spring 441, a pressure adjusting spring 442, and an elastic force adjusting member 45. The pressure relief cover 41 is in threaded connection with the elastic force adjusting component 45, a limiting sheet 47 is arranged on the outer wall of the exhaust pipe 46, one end of a limiting spring 411 is fixedly arranged on the limiting sheet 47, the other end of the limiting spring abuts against the elastic force adjusting component 45, and a pressure adjusting spring 442 is arranged between the lifting component 43 and the elastic force adjusting component 45 and surrounds the periphery of the elastic force adjusting component 45.

See fig. 10. When the sliding point 421 of the pressure regulating rotating wheel 42 slides downwards one tooth socket on the step teeth 431 on the outer wall of the lifting part 43, the compression force of the limiting spring 441 and the pressure regulating spring 442 is gradually reduced, the springs are gradually loosened, and the sealing of the exhaust pipe 46 by the pressure relief cover 41 is also gradually loosened. When the preset air pressure value released into the pot body 1 can push the pressure relief cover 41 open, the hot air in the pot body 1 is discharged from the vent hole 411 at the top of the pressure relief cover 41. When the sliding point 421 slides to the lowest step tooth 431, the compression force of the limiting spring 441 and the pressure adjusting spring 442 is minimum, the springs are in an extended state (see fig. 10), and the distance between the pressure adjusting rotary wheel 42 and the lifting member 43 in the direction of the exhaust pipe 6 is minimum, and the pressure adjusting rotary wheel is almost in an attached state. At the moment, the pressure relief cover can be pushed open without too much air pressure in the pot body 1.

The invention also provides a method for controlling the stroke of the regulating valve. When the motor 32 is started due to the pressure relief, determining the rotation time of the motor 32 can determine the stroke of the regulating valve 4. How long the sliding point 421 of the voltage-regulating rotating wheel 42 slides up or down on the step teeth 431 on the outer wall of the lifting part 43 is, the time when the motor 32 rotates, which is also the duration of the time when the micro-control unit 31 generates the starting motor signal.

It should be noted that the force to open the cover 41 varies according to the pressure inside the pot 1. When the stroke of the regulating valve 4 has a certain value, the rotation time of the motor 32 under the condition of different air pressure values in the pot body 1 can be tested by an experimental method. The travel of the regulating valve 4 is determined according to the motor rotation time: and editing the menu program by taking the tested optimal or relatively better preset air pressure value required by the cooking food material and the motor rotation time as two variables through programming. The program is loaded into the micro control unit 31 which can be edited, and the micro control unit 31 can control the stroke of the regulating valve 4 by controlling the rotation time of the motor, thereby controlling the air leakage speed of the pan body 1. For example, when the preset air pressure value is set to 1.7 atmospheres, the sliding point 421 needs to slide downward on the step tooth 431 for 0.8 second, and the compression forces of the limiting spring 441 and the pressure adjusting spring 442 are reduced to make the pressure relief cover 41 be opened by 1.7 atmospheres, at this time, the time for the programmable micro-control unit 31 to continuously output the start motor signal is set to 0.8 second. Of course, in order to ensure that the motor 32 stops rotating after the pressure relief cover 41 is opened and deflated, the time for setting the editable micro-control unit to continuously output the signal is slightly longer than 0.8 second, which can be designed to be 0.82 second or 0.83 second. Another example. The preset air pressure value is set to 1.5 atmospheres, the sliding point 421 needs to slide on the step tooth 431 for 1.0 second, the compression forces of the limiting spring 441 and the pressure adjusting spring 442 are reduced to enable the pressure relief cover 41 to be opened by 1.5 atmospheres, and the time for the programmable micro control unit 31 to continuously output the starting motor signal is set to 1.0 second, and similarly, the time can be set to 1.10 seconds or 1.20 seconds.

The pressure cooker also comprises a display screen 5, the micro control unit 31 is electrically connected with the display screen 5, the display screen 5 can display the temperature and the pressure in the cooker body 1 in real time, an adjusting key 51 is further arranged on the display screen 5, and a preset air pressure value preset by a built-in program of the micro control unit 31 is adjusted through the adjusting key 51.

The micro control unit is also internally provided with a communication module which can be connected to the mobile phone and matched with an application program in the mobile phone, the application program in the mobile phone can select different recipes, and different preset air pressure values are set for the different recipes. The user can upload or download different menu programs through the communication module, and set the optimal or relatively reasonable air pressure value required by stewing different foods according to the menu programs and the air pressure value in the pot body 1 according to the menu.

The working process of the pressure cooker of the invention is as follows: after the pressure cooker starts working, the air pressure in the cooker body 1 starts to gradually increase, when the air pressure reaches or is higher than a preset air pressure value, the temperature and pressure sensor 6 transmits an air pressure signal to the editable micro control unit 31, the micro-control unit 31 can be edited to further control the motor 32 to rotate, the motor 32 drives the pressure regulating rotating wheel in the regulating valve to rotate through a transmission mechanism (see fig. 9), the sliding point 421 of the inner wall of the pressure regulating rotating wheel 42 before the pressure regulating rotating wheel is started is located on the highest step tooth 431 of the outer wall of the lifting part 43, at this time, the limiting spring 441 and the pressure regulating spring 442 are in the maximum compressed state (see fig. 9), the distance between the pressure regulating rotating wheel 42 and the lifting part 43 in the direction of the exhaust pipe 46 is maximum, the compression force of the spring is maximum, the plug 411 of the pressure relief cover 41 is also in the most tight state for plugging the exhaust pipe 46 under the action of the compression force, and at this time, the pressure relief cover 41 is in the state which is most difficult to be pushed open (see fig. 9). The air pressure value in the pan body 1 can be preset by the programmable micro-control unit 31 by a programming mode, in particular by a menu program or control panel keys. When the air pressure in the pot body 1 reaches or exceeds a preset air pressure value, the temperature and pressure sensor 6 transmits an air pressure signal to the programmable micro control unit 31, the programmable micro control unit 31 generates a signal for starting the motor 32, and the motor 32 opens the regulating valve 4 through a transmission mechanism, so that the air in the pot body 1 is discharged. By setting the length of time the motor is rotated, the stroke of the rising of the regulating valve 4 can be ensured to avoid that the regulating valve 4 is deflated too fast or damaged due to an over-large stroke.

When the air pressure value in the pot body 1 is lower than the preset air pressure value due to air leakage, the temperature and pressure sensor 6 transmits an air pressure signal in the pot body 1 to the programmable micro-control unit 31, the programmable micro-control unit 31 generates a signal for starting the motor 32 to rotate reversely, and the motor 32 closes the regulating valve 4 through a transmission mechanism. By setting the length of time the motor is rotated, the stroke of the lowering of the regulating valve 4 can be ensured to avoid that the regulating valve 4 is deflated too fast or damaged due to an excessive stroke.

The above-mentioned embodiments only express some embodiments of the present patent, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present patent protection. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the patent concept, which falls within the scope of protection of the patent. Therefore, the protection scope of this patent shall be subject to the appended claims.

Claims

1. The utility model provides a pressure cooker, includes the pot body, pot cover, programmable micro control unit, governing valve, sensor, the one end of sensor stretches into the internal portion of pot, the sensor gives programmable micro control unit with atmospheric pressure signal, and programmable micro control unit presets the atmospheric pressure value through the program setting, its characterized in that still includes motor and drive mechanism, the motor passes through drive mechanism control governing valve motion, detects according to the sensor atmospheric pressure in the pot body, programmable micro control unit according to certain rule to the motor sends and starts or stall's signal to control the governing valve and open or close.

2. The pressure cooker of claim 1, wherein said sensor is a temperature and pressure sensor.

3. The pressure cooker of claim 1, wherein the transmission mechanism includes a drive gear, a transmission crown gear, and a transmission gear, the transmission crown gear is engaged with the drive gear and the transmission gear, respectively, the motor rotates the drive gear, the drive gear rotates the transmission crown gear, and the transmission crown gear in turn rotates the transmission gear.

4. The pressure cooker of claim 1, wherein said certain rule is that said programmable micro-control unit generates a signal to activate the motor when the pressure level in the cooker body exceeds a preset pressure level, and generates a signal to activate the motor to reverse when the pressure level in the cooker body is below the preset pressure level.

5. The pressure cooker according to claim 4, wherein when the pressure in the cooker body exceeds a preset pressure, the motor stops after the regulating valve rotates for a certain stroke when the motor receives a signal generated by the programmable micro-control unit to start the motor.

6. The pressure cooker of claim 5, wherein said certain stroke is achieved by programming a programmable micro-control unit and controlling the rotation time of said motor.

7. The pressure cooker of claim 4, wherein said programmable micro-control unit generates a signal to initiate reverse rotation of the motor when the pressure level within the cooker body is below a predetermined pressure level, said motor reversing and said regulating valve stopping rotation after a certain travel and closing the regulating valve.

8. The pressure cooker of claim 7, wherein said certain stroke is achieved by programming a programmable micro-control unit and controlling the rotation time of said motor.

9. The pressure cooker according to claim 5 or 7, wherein the adjusting valve comprises a pressure releasing cover, a pressure adjusting rotating wheel, a lifting component, an elastic component and an exhaust pipe, an exhaust hole is formed in the top of the pressure releasing cover, a hole plug is arranged in the pressure releasing cover and used for blocking the exhaust pipe, the pressure releasing cover is connected with the elastic component and covers the upper portion of the lifting component, the pressure adjusting rotating wheel can rotate to adjust the elasticity of the elastic component, and therefore the elastic component can support the pressure releasing cover and the lifting component to reciprocate along the direction of the exhaust pipe.

10. The pressure cooker according to claim 9, wherein a gear is arranged on the periphery of the pressure regulating rotating wheel, the gear is meshed with the transmission gear, sliding points are arranged on the inner wall of the pressure regulating rotating wheel, the pressure regulating rotating wheel is sleeved on the outer wall of the lifting component, step teeth are arranged on the outer wall of the lifting component in sequence from low to high, the sliding points on the inner wall of the pressure regulating rotating wheel are meshed with the step teeth on the outer wall of the lifting component, the sliding points are located at every sliding tooth groove of the step teeth on the outer wall of the lifting component, the elastic force of the elastic component can generate a change, and the lifting component is located along the direction of the exhaust pipe for a distance under the elastic support of the elastic component.

11. The pressure cooker as claimed in claim 10, wherein the elastic member includes a position-limiting spring, a pressure-adjusting spring and an elastic force-adjusting member, the pressure-releasing cover is threadedly coupled to the elastic force-adjusting member, the outer wall of the exhaust pipe is provided with a position-limiting plate, one end of the position-limiting spring is fixedly disposed on the position-limiting plate, the other end of the position-limiting spring abuts against the elastic force-adjusting member, and the pressure-adjusting spring is disposed between the elevating member and the elastic force-adjusting member and surrounds the periphery of the elastic force-adjusting member.

12. The pressure cooker of claim 11, wherein the adjustment valve is opened or closed by movement of a lifting member.

13. The pressure cooker of claim 1, wherein said programmable micro-control unit is capable of uploading or downloading a recipe program in which said preset air pressure value is set, said programmable micro-control unit obtaining said preset air pressure value from the program after uploading the recipe program.

14. The pressure cooker of claim 1, wherein said preset air pressure value is programmably settable directly on a programmable micro-control unit.

15. The pressure cooker of claim 14, further comprising a display screen, wherein said programmable micro control unit is electrically connected to said display screen, said display screen can display the temperature and pressure in said cooker body in real time, said display screen is further provided with an adjusting button, and a preset air pressure value preset by said programmable micro control unit is adjusted by touching said adjusting button.

16. The pressure cooker of claim 15, wherein said programmable micro-control unit is further provided with a communication module connectable to a cell phone to match an application in the cell phone, wherein the application in the cell phone can select different recipes, and wherein different recipes set different preset air pressure values.