WO2022036773A1

WO2022036773A1 - Pressure cooker

Info

Publication number: WO2022036773A1
Application number: PCT/CN2020/114107
Authority: WO
Inventors: 康从涛; 黎健泉; 伍雄基; 管永斌; 姚健
Original assignee: 广东万事泰集团有限公司
Priority date: 2020-08-19
Filing date: 2020-09-08
Publication date: 2022-02-24
Also published as: CN114073402A

Abstract

A pressure cooker, comprising a cooker body (1), a cooker cover (2), a programmable micro-control unit (31), a regulating valve (4), and a sensor (6). One end of the sensor (6) extends into the cooker body (1). The sensor (6) transmits an air pressure signal to the programmable micro-control unit (31). The programmable micro-control unit (31) presets an air pressure value by means of program setting. The pressure cooker further comprises a motor (32) and a transmission mechanism. The motor (32) controls the movement of the regulating valve (4) by means of the transmission mechanism. According to the air pressure in the cover body (1) detected by the sensor (6), the programmable micro-control unit (31) sends a rotation start or stop signal to the motor (32) according to a certain rule, so as to control the regulating valve (4) to be opened or closed.

Description

a pressure cooker

technical field

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

Background technique

In the prior art, such as an intelligent pressure-controlled pressure cooker with patent number ZL 201811217146.6, the preset air pressure value of the top-opening safety valve in the pressure cooker cooker is a fixed value. When the user uses this pressure cooker, no matter what kind of food is being simmered, the inside of the pot is a fixed air pressure. But in life, there are many types of food that need to be cooked, and the optimal cooking pressure for different types of food is likely to be different. Cooking different types of food (e.g. rice, bones) using a pressure cooker that implements current technology is likely to result in too long or too short cooking time or food loss of nutrients and bad taste.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned disadvantages of the prior art, the present invention provides a pressure cooker, which includes a pot body, a pot cover, a programmable micro-control unit, a regulating valve, and a sensor. One end of the sensor extends into the pot body. The temperature and pressure of the generator generate signals and transmit them to the programmable microcontroller unit.

The main inventive point of the present invention is that it also includes a motor and a transmission mechanism, and the motor controls the movement of the regulating valve through the transmission mechanism. By programming, the optimal or relatively reasonable air pressure value required for cooking different recipes can be preset according to different recipe programs; this setting can be done by setting the programmable micro-control unit through the adjustment button on the pressure cooker panel. , There is a display on the control panel that can display the set pressure value and the real-time pressure value in the pot. When the air pressure in the pot reaches or exceeds the preset air pressure value, the sensor transmits the air pressure signal to the programmable micro-control unit, and the programmable micro-control unit generates a signal to start the motor, and the motor is driven by the transmission The mechanism opens the regulating valve, thereby venting the gas in the pot and reducing the air pressure in the pot. In order to avoid damage to the control valve caused by excessive air leakage due to the excessively large air outlet of the control valve or too large a rotation stroke of the control valve, at this stage, by editing the program, the number of rotations of the motor can be set to limit the rotation stroke of the control valve within Within the safe range, the motor stops rotating when the set stroke is reached. Then, when the air pressure value in the pot is equal to or slightly lower than the preset pressure value, the sensor transmits the air pressure signal to the programmable micro-control unit, and the programmable micro-control unit generates a signal to start the reversal of the motor, and the The motor closes the regulating valve through the transmission mechanism. Similarly, in order to keep the rotational stroke of the regulating valve within a safe range, at this stage, by editing the program, the number of turns of the motor’s reverse rotation can be set to ensure that the rotational stroke of the regulating valve is within a safe range, and when the set stroke is reached , the motor stops rotating.

The technical effect or function of the present invention is that the air pressure value required for cooking different ingredients can be preset through software programming, such as a recipe program, or through adjustment buttons on the panel.

Description of drawings

Fig. 1 is the overall structure schematic diagram one of the present invention;

Fig. 2 is the overall structure schematic diagram two of the present invention;

Fig. 3 is the sectional view of the present invention;

Fig. 4 is the exploded view of the present invention;

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

6 is a schematic diagram 1 of the combination of a micro-control unit, a motor, a transmission mechanism and a regulating valve of the present invention;

Fig. 7 is the combined schematic diagram 2 of the micro-control unit, the motor, the transmission mechanism and the regulating valve of the present invention;

Fig. 8 is the sectional view 1 of the regulating valve of the present invention;

Fig. 9 is the sectional view 2 of the regulating valve of the present invention;

Fig. 10 is the sectional view 3 of the regulating valve of the present invention;

Figure 11 is an exploded view of the regulating valve of the present invention four;

Fig. 12 is an exploded view 5 of the regulating valve of the present invention;

13 is a schematic diagram 1 of the combination of the pressure regulating rotary wheel and the lifting component according to the present invention;

FIG. 14 is a second schematic diagram of the combination of the pressure regulating rotating wheel and the lifting component according to the present invention.

In the figure, 1 pot body, 2 pot cover, 31 micro control unit, 32 motor, 321 drive gear, 33 drive crown tooth, 34 drive gear, 4 regulating valve, 41 pressure relief cover, 411 vent hole, 412 hole plug, 42 pressure regulating rotary wheel, 421 slip point, 43 lift parts, 431 step teeth, 441 limit spring, 442 pressure adjustment spring, 45 elastic force adjustment part, 46 exhaust pipe, 47 limit piece, 5 display screen, 51 adjustment button , 6 sensors.

detailed description

The technical solutions 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 Figures 1 to 14. A pressure cooker includes a pot body 1, a pot cover 2, an editable micro-control unit 31, a regulating valve 4, and a sensor 6. The sensor is preferably a temperature and pressure sensor 6, and one end of the temperature and pressure sensor 6 extends into the pot body 2. The temperature and pressure sensor 6 generates a signal according to the temperature and pressure inside the pot body 1 and transmits it to the programmable microcontroller unit 31 . The motor 32 and the transmission mechanism (including the drive gear 321, the transmission crown tooth 33, and the transmission gear 34), the motor 32 controls the movement of the regulating valve 4 through the transmission mechanism.

See Figures 5 to 7. The transmission mechanism includes a driving gear 321, a transmission crown tooth 33, and a transmission gear 34. The transmission crown tooth 33 meshes with the driving gear 321 and the transmission gear 34 respectively. The motor 32 drives the driving gear 321 to rotate, and the driving gear 321 drives the transmission crown tooth 33 to rotate. The crown teeth 33 further drive the transmission gear 34 to rotate.

See Figures 8 to 14. The regulating valve includes a pressure relief cover 41 , a pressure regulating rotating wheel 42 , a lifting component 43 , an elastic component (including a limit spring 441 , a pressure regulating spring 442 and an elastic force regulating component 45 ) and an exhaust pipe 46 . An exhaust hole 411 is provided on the top of the pressure relief cover 41, and the exhaust hole 411 is used to discharge the hot air in the pot body 1, and a hole plug 412 is also arranged in the pressure relief cover 41, and the hole plug 412 is used to block Exhaust pipe 46 . The pressure relief cover 41 is connected with the elastic member and covers the upper part of the lifting member 43. The pressure regulating rotary wheel 42 can rotate to adjust the elastic force of the elastic member, so that the elastic member can support the pressure relief cover 41 and the lifting member 42 along the exhaust pipe. Reciprocating movement in the direction. A gear is arranged on the outer circumference of the pressure regulating rotating wheel 42 , and the gear is meshed with the transmission gear 34 . A slip point 421 is provided on the inner wall of the pressure regulating rotary wheel 42 , the pressure regulating rotary wheel 42 is sleeved on the outer wall of the lifting member 43 , and the outer wall of the lifting member 43 is provided with stepped teeth 431 arranged in order from low to high. The inner wall of the pressure regulating rotary wheel 42 The slip point 421 is meshed with the stepped teeth 431 on the outer wall of the lifting member, and each time the sliding point 421 slides a tooth slot on the stepped teeth 431 on the outer wall of the lifting member, the elastic force of the elastic member will change, and then the elastic force of the lifting member 43 in the elastic member will change. The support moves a distance in the direction of the exhaust pipe 46 . The elastic part includes a limit spring 441 , a pressure adjustment spring 442 and an elastic force adjustment part 45 . The pressure relief cover 41 is threadedly connected with the elastic force adjustment member 45, a limit piece 47 is arranged on the outer wall of the exhaust pipe 46, one end of the limit spring 411 is fixedly arranged on the limit piece 47, and the other end touches the elastic force adjustment member 45, and the pressure The adjusting spring 442 is disposed between the lifting member 43 and the elastic force adjusting member 45 and surrounds the periphery of the elastic force adjusting member 45 .

See Figure 10. Each time the sliding point 421 of the pressure regulating rotary wheel 42 slides down a tooth slot on the stepped teeth 431 of the outer wall of the lifting member 43, the compressive force of the limit spring 441 and the pressure regulating spring 442 will gradually decrease, the spring will gradually become loose, and the leakage will be reduced. The sealing of the exhaust pipe 46 by the gland 41 is also gradually loosened. When the preset air pressure in the pot body 1 can push the pressure relief cover 41 open, the hot air in the pot body 1 is released from the exhaust hole 411 at the top of the pressure relief cover 41 . When the slip point 421 slides to the lowest step tooth 431, the compression force of the limit spring 441 and the pressure adjustment spring 442 is the smallest, the springs are in an extended state (see FIG. 10 ), and the pressure regulating rotating wheel 42 and the lifting member 43 are in the exhaust pipe 6 The distance in the direction is minimal, almost in a snug fit. At this time, 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 activated due to pressure relief, determining the rotation time of the motor 32 can determine the stroke of the regulating valve 4 . How long does the slip point 421 of the pressure regulating rotary wheel 42 slide up or down on the stepped teeth 431 on the outer wall of the lifting component 43, this time is the time for the motor 32 to rotate, which is also the programmable micro-control unit 31 to generate the start motor signal duration.

It should be noted that the magnitude of the force for opening the vent cover 41 generated by different air pressure values in the pot body 1 is different. When the stroke of the regulating valve 4 is a certain value, the rotation time of the motor 32 under different air pressure values in the pot body 1 can be tested experimentally. The stroke of the regulating valve 4 is determined according to the rotation time of the motor: by writing a program, the recipe program is edited with the best or relatively good preset air pressure value required by the tested cooking ingredients and the rotation time of the motor as two variables. The program is loaded into the editable micro-control unit 31, and the editable micro-control unit 31 can control the stroke of the regulating valve 4 by controlling the rotation time of the motor, thereby controlling the speed of deflation of the pot body 1. For example, when the preset air pressure value is set to 1.7 atmospheres, the slip point 421 needs to slide down on the step teeth 431 for 0.8 seconds, and the compressive force of the limit spring 441 and the pressure adjustment spring 442 will be reduced to the point where the pressure relief cover is reduced. 41 can be pushed open by 1.7 atmospheres, and at this time, the time that the programmable micro-control unit 31 continues to output the signal to start the motor is set to be 0.8 seconds. Of course, in order to ensure that the motor 32 stops rotating after the pressure relief cover 41 is opened to deflate the air, the duration of the continuous output signal of the programmable micro-control unit is set to be slightly longer than 0.8 seconds, which can be designed to be 0.82 seconds or 0.83 seconds. Another example. The preset air pressure value is set to 1.5 atmospheres, the slip point 421 needs to slide on the step teeth 431 for 1.0 seconds, and the compressive force of the limit spring 441 and the pressure adjustment spring 442 will be reduced so that the pressure relief cover 41 can be removed by 1.5 Atmospheric pressure is turned on, at this time, the time for the programmable micro-control unit 31 to continuously output the signal to start the motor is set to 1.0 seconds. Similarly, it can also be designed to be 1.10 seconds or 1.20 seconds.

The pressure cooker also includes a display screen 5. The micro-control unit 31 is electrically connected to the display screen 5. The display screen 5 can display the temperature and pressure in the pot body 1 in real time. The display screen 5 is also provided with an adjustment button 51. Adjust the preset air pressure value preset by the built-in program of the micro-control unit 31 .

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

The working process of the pressure cooker of the present invention is as follows: after the pressure cooker starts to work, the air pressure in the pot body 1 begins to gradually increase, and when it reaches or exceeds the preset preset air pressure value, the temperature and pressure sensor 6 transmits the air pressure signal to the editable The micro-control unit 31 can be edited to control the rotation of the motor 32. The motor 32 drives the pressure regulating rotary wheel in the regulating valve to rotate through the transmission mechanism (see Figure 9), and the sliding point of the inner wall of the pressure regulating rotary wheel 42 before starting 421 is located on the highest step tooth 431 on the outer wall of the lifting member 43. At this time, the limit spring 441 and the pressure regulating spring 442 are in the maximum compressed state (see Figure 9). The pressure regulating rotary wheel 42 and the lifting member 43 are in the direction of the exhaust pipe 46. The distance on the upper part is the largest, the compression force of the spring is the largest, and the plug 411 of the pressure relief cover 41 is also in the tightest state to block the exhaust pipe 46 under the action of the compression force. open state (see Figure 9). The air pressure value in the pot body 1 can be preset through the programmable micro-control unit 31 through programming, especially the recipe program or the keys on the control panel. When the air pressure in the pot body 1 reaches or exceeds the preset air pressure value, the temperature and pressure sensor 6 transmits the air pressure signal to the programmable micro-control unit 31, and the programmable micro-control unit 31 generates a signal to start the motor 32, and the motor 32 passes through the The transmission mechanism opens the regulating valve 4 to discharge the gas in the pot body 1 . By setting the length of time for the motor to rotate, the upward stroke of the regulating valve 4 can be ensured, so as to avoid too fast deflation or damage to the regulating valve 4 due to excessive stroke.

When the air pressure value in the pot body 1 is lower than the preset air pressure value due to deflation, the temperature and pressure sensor 6 transmits the air pressure signal in the pot body 1 to the programmable micro-control unit 31 , and the programmable micro-control unit 31 generates the starter motor 32 When the signal is reversed, the motor 32 closes the regulating valve 4 through the transmission mechanism. By setting the length of time for the motor to rotate, the descending stroke of the regulating valve 4 can be ensured, so as to avoid too fast deflation or damage to the regulating valve 4 due to excessive stroke.

The above-mentioned embodiments only represent part of the embodiments of the present patent, and the descriptions thereof are relatively specific and detailed, but should not be construed as limitations on the protection scope of the present patent. It should be pointed out that for those skilled in the art, without departing from the concept of the present patent, several modifications and improvements can be made, which all belong to the protection scope of the present patent. Accordingly, the scope of protection of this patent should be determined by the appended claims.

Claims

A pressure cooker, comprising a pot body, a pot cover, a programmable micro-control unit, a regulating valve, and a sensor, one end of the sensor extends into the pot body, the sensor transmits an air pressure signal to the programmable micro-control unit, and the programmable micro-controller The control unit sets a preset air pressure value through a program, and it is characterized in that it also includes a motor and a transmission mechanism, the motor controls the movement of the regulating valve through the transmission mechanism, and the programmable micro-controller detects the air pressure in the pot according to the sensor. The control unit sends a signal to start or stop the rotation of the motor according to certain rules, so as to control the regulating valve to open or close.
The pressure cooker of claim 1, wherein the sensor is a temperature and pressure sensor.
The pressure cooker according to claim 1, wherein the transmission mechanism comprises a driving gear, a transmission crown, and a transmission gear, and the transmission crown meshes with the driving gear and the transmission gear respectively, and the motor drives the The drive gear rotates, the drive gear drives the transmission crown teeth to rotate, and the transmission crown teeth further drives the transmission gear to rotate.
The pressure cooker according to claim 1, wherein the certain rule is that when the air pressure value in the pot body exceeds the preset air pressure value, the programmable micro-control unit generates a signal to start the motor, and when the pressure inside the pot body exceeds the preset air pressure value When the air pressure value is lower than the preset air pressure value, the programmable micro-control unit generates a signal for starting the reverse rotation of the motor.
The pressure cooker according to claim 4, wherein when the air pressure value in the pot body exceeds a preset air pressure value, when the motor receives a signal generated by the programmable micro-control unit to start the motor, the adjusting After the valve rotates for a certain stroke, the motor stops running.
The pressure cooker according to claim 5, wherein the certain stroke is realized by programming a programmable micro-control unit and controlling the rotation time of the motor.
The pressure cooker according to claim 4, wherein when the air pressure value in the pot body is lower than the preset air pressure value, the programmable micro-control unit generates a signal to start the motor reversing, the motor reversing and the After a certain stroke of the regulating valve, the motor stops rotating and the regulating valve is closed.
The pressure cooker according to claim 7, wherein the certain stroke is realized by programming a programmable micro-control unit and controlling the rotation time of the motor.
The pressure cooker according to claim 5 or 7, wherein the regulating valve comprises a pressure relief cover, a pressure regulating rotary wheel, a lifting component, an elastic component and an exhaust pipe, and an exhaust hole is provided on the top of the pressure relief cover , the pressure relief cover is provided with a hole plug, the hole plug is used to block the exhaust pipe, the pressure relief cover is connected with the elastic member and covers the upper part of the lifting member, and the pressure regulation rotates The wheel can rotate to adjust the elastic force of the elastic member, so that the elastic member can support the pressure relief cover and the lifting member to reciprocate along the direction of the exhaust pipe.
The pressure cooker according to claim 9, wherein a gear is provided on the periphery of the pressure regulating rotating wheel, the gear is meshed and connected with the transmission gear, the inner wall of the pressure regulating rotating wheel is provided with a slip point, and the pressure regulating rotating wheel is provided with a slip point. The pressure rotating wheel is sleeved on the outer wall of the lifting component, the outer wall of the lifting component is provided with stepped teeth arranged in order from low to high, and the slip point of the inner wall of the pressure regulating rotating wheel meshes with the stepped teeth on the outer wall of the lifting component connection, the sliding point slides one tooth slot on the outer wall of the lifting member, the elastic force of the elastic member will change, and then the lifting member is supported by the elastic member along the Move a distance in the direction of the exhaust pipe.
The pressure cooker according to claim 10, wherein the elastic part comprises a limit spring, a pressure adjusting spring and an elastic force adjusting part, the pressure relief cover is threadedly connected with the elastic force adjusting part, and the outer wall of the exhaust pipe A limit piece is provided, one end of the limit spring is fixedly arranged on the limit piece, the other end touches the elastic force adjustment member, and the pressure adjustment spring is arranged between the lift member and the elastic force adjustment member and surrounds the periphery of the elastic force adjusting part.
The pressure cooker according to claim 11, wherein the opening or closing of the regulating valve is realized by the movement of the lifting member.
The pressure cooker according to claim 1, wherein the programmable micro-control unit can upload or download a recipe program, the preset air pressure value is set in the recipe program, and after the recipe program is uploaded, the The programmable micro-control unit obtains the preset air pressure value from the program.
The pressure cooker according to claim 1, wherein the preset air pressure value can be directly set on the programmable micro-control unit by programming.
The pressure cooker according to claim 14, further comprising a display screen, the programmable micro-control unit is electrically connected to the display screen, and the display screen can display the temperature and pressure in the pot in real time, The display screen is also provided with an adjustment button, and the preset air pressure value preset by the programmable micro-control unit can be adjusted by touching the adjustment button.
The pressure cooker according to claim 15, wherein the programmable micro-control unit is further provided with a communication module, which can be connected to a mobile phone to match an application program in the mobile phone, and the application program in the mobile phone can select different Recipes, different recipes set different preset air pressure values.