WO2018157409A1 - 烹饪器具的压力控制方法 - Google Patents

烹饪器具的压力控制方法 Download PDF

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Publication number
WO2018157409A1
WO2018157409A1 PCT/CN2017/075788 CN2017075788W WO2018157409A1 WO 2018157409 A1 WO2018157409 A1 WO 2018157409A1 CN 2017075788 W CN2017075788 W CN 2017075788W WO 2018157409 A1 WO2018157409 A1 WO 2018157409A1
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Prior art keywords
pressure
value
predetermined
temperature value
pot body
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PCT/CN2017/075788
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English (en)
French (fr)
Inventor
刘化勇
梁志佳
黄韦铭
马利
周少程
羊小亮
Original Assignee
佛山市顺德区美的电热电器制造有限公司
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Publication of WO2018157409A1 publication Critical patent/WO2018157409A1/zh

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00—Cooking-vessels
    • A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
    • A47J27/0802—Control mechanisms for pressure-cookers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00—Cooking-vessels
    • A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00—Cooking-vessels
    • A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
    • A47J27/09—Safety devices

Definitions

  • the present invention relates to the field of cooking appliances, and more particularly to a pressure control method for a cooking appliance.
  • the cooking effect can be improved by changing the internal pressure.
  • the effect and flatness of the rice can be improved by changing the pressure in the pot, but the pressure control in the pot is usually controlled by pressure.
  • the "on” and “off” switching of the valve is realized, and in the process of controlling the pressure change, multiple judgments on temperature and time are required, the determination logic is complicated, the program is complicated, and various errors are easily caused, resulting in the product not working normally.
  • the present invention aims to solve at least one of the technical problems in the related art to some extent.
  • the present invention provides a pressure control method for a cooking appliance.
  • the pressure control method of the cooking appliance has simple decision logic, simple procedure, low error rate, and can effectively ensure the pressure control reliability of the cooking appliance and improve the cooking effect.
  • a pressure control method of a cooking appliance comprising the steps of: S1, controlling the cooking The appliance is turned on, the pressure valve is in an open state; S2, one of temperature and pressure in the pot is detected to control the pressure valve to be closed or opened.
  • the pressure control method of the cooking appliance by detecting one of the temperature and the pressure in the pot body, the detected value is compared with a predetermined value, thereby controlling the closing or opening of the pressure valve, thereby merely passing the temperature Or pressure as a single factor to determine the variable pressure control in the pot, not only a single component, low cost, and the decision logic and control procedures are simple, can reduce the error rate and improve the pot while ensuring the normal operation of the cooking utensils Reliability of internal pressure control.
  • the pressure control method of the cooking appliance according to the embodiment of the present invention may further have the following additional technical features:
  • the step S2 includes: S21, detecting one of temperature and pressure in the pot body to obtain a first temperature value or a first pressure value; S22, the first temperature value Comparing with the first predetermined temperature value or comparing the first pressure value with a first predetermined pressure value, when the first temperature value is greater than the first predetermined temperature value or the first pressure value is greater than the first
  • the pressure valve is controlled to be closed.
  • the step S2 further includes: S23, detecting one of temperature and pressure in the pot body to obtain a second temperature value or a second pressure value; S24, the second temperature Comparing a value to a second predetermined temperature value or comparing the second pressure value to a second predetermined pressure value, when the second temperature value is greater than the second predetermined temperature value Or controlling the pressure valve to open when the second pressure value is greater than the second predetermined pressure value, the second predetermined temperature value is greater than the first predetermined temperature value, and the second predetermined pressure value is greater than the The first predetermined pressure value.
  • the step S2 further includes: S25, detecting one of temperature and pressure in the pot body to obtain a third temperature value or a third pressure value; S26, the third temperature Comparing a value with a third predetermined temperature value or comparing the third pressure value with a third predetermined pressure value, when the third temperature value is less than the third predetermined temperature value or the third pressure value is less than the first Controlling, by the third predetermined pressure value, that the pressure valve is closed, the third predetermined temperature value is less than the second predetermined temperature value and greater than the first predetermined temperature value, and the third predetermined pressure value is less than the first The predetermined pressure value.
  • the detection object in the step S25 and the step S23 is the same as the detection object in the step S21.
  • the first predetermined temperature value is 75 ° C to 98 ° C
  • the second predetermined temperature value is 102 ° C to 120 ° C
  • the third predetermined temperature value is 95 ° C to 100 ° C.
  • the first predetermined pressure value is 101 KPa to 104 KPa
  • the second predetermined pressure value is 110 KPa to 205 KPa
  • the third predetermined pressure value is 100 KPa to 101 KPa.
  • the pressure valve is provided with a steam hole
  • the pressure valve further includes an electromagnet and a magnetic member
  • the magnetic member is disposed at the steam hole and closes the steam hole.
  • the electromagnet attracts or repels the magnetic member when energized to disengage the magnetic member and opens the steam hole; or the pressure valve is provided with a steam hole
  • the cooking appliance further includes a driving member and a steam exhausting member, the steam discharging member is disposed at the steam hole and closing the steam hole, and the driving member pushes the steam discharging member when the command is received to disengage the steam discharging member and open the steam hole.
  • the magnetic member or the exhaust member is movably disposed within the pressure valve.
  • the magnetic member or the exhaust member is formed in a spherical shape.
  • FIG. 1 is a cross-sectional view of a cooking appliance in accordance with an embodiment of the present invention
  • Fig. 2 is an enlarged view of a portion A shown in Fig. 1.
  • FIG. 3 is a schematic view of a pressure control method of a cooking appliance according to an embodiment of the present invention.
  • FIG. 4 is a schematic view of a pressure control method of a cooking appliance according to still another embodiment of the present invention.
  • 50 detecting device
  • 60 main body
  • 70 heating device.
  • the cooking appliance 100 according to an embodiment of the present invention will be specifically described below with reference to FIGS. 1 and 2.
  • a cooking appliance 100 includes a pot body 10, a lid body 20, and a pressure valve 40 provided on the lid body 20.
  • the pot body 10 can be disposed within the body 60 of the cooking appliance 100.
  • the upper end of the pot body 10 is provided with a cover body 20, and the lid body 20 can close the upper end of the pot body 10 to ensure the pressure inside the pot body 10.
  • the cover 20 is provided with a detecting device 50 and a pressure valve 40.
  • the detecting device 50 may be a pressure detecting device or a temperature detecting device.
  • the main body 60 of the cooking appliance 100 is provided with a control unit 30 and a heating device 70, and the control unit 30 is connected to the detecting device 50 and the pressure valve 40.
  • the detecting device 50 detects the pressure or temperature in the pot body 10, and outputs a signal to the control unit 30.
  • the control unit 30 is pre-set with a predetermined pressure value or a predetermined temperature value, and the control unit 30 determines the value according to the pressure.
  • the temperature detection value is compared with a predetermined predetermined pressure value or a predetermined temperature value preset in the control unit 30 to perform a logic determination, and the output signal controls the opening or closing of the pressure valve 40, thereby achieving control of the pressure in the pot body 10.
  • the pressure valve 40 is provided with a steam hole 43.
  • the inside of the pot body 10 communicates with the outside of the pot body 10 through the steam hole 43 on the steam valve.
  • the cooking appliance 100 further includes an electromagnet and a magnetic member 42 disposed at the steam hole 43 and enclosing the steam hole 43 that attracts the magnetic member 42 to energize the magnetic member 42 when energized And the steam hole 43 is opened.
  • a magnetic member 42 is provided at the upper end of the steam hole 43 and closes the steam hole 43, and the control unit 30 controls the solenoid valve to be energized or de-energized according to the detected value of the internal pressure or temperature of the pot body 10.
  • the solenoid valve When the solenoid valve is energized, the electromagnet 41 generates a magnetic attraction or repels the magnetic member 42, thereby causing the magnetic member 42 to disengage to open the steam hole 43.
  • the cooking appliance 100 includes a driving member and a venting member.
  • the pressure valve 40 has a steam hole 43 disposed on the steam hole 43 and closing the steam hole 43.
  • the driving member pushes the exhaust member out of the steam hole 43 to open the steam hole 43, wherein the exhaust member may be formed substantially in a spherical shape and movably disposed in the pressure valve 40.
  • the magnetic member 42 is movably disposed within the pressure valve 40.
  • the pressure valve 40 is provided with a receiving chamber for accommodating the magnetic member 42.
  • the steam hole 43 is electrically connected to the accommodating chamber.
  • the inside of the pot body 10 can pass through the steam hole 43, the accommodating chamber and the pot body 10. Externally connected, the magnetic member 42 is movably disposed within the accommodating chamber.
  • the electromagnet 41 When the solenoid valve is energized, The electromagnet 41 generates a magnetic attraction or repels the magnetic member 42, thereby causing the magnetic member 42 to be disengaged or fitted to open or close the steam hole 43, so that the inside of the pot body 10 is electrically connected to the accommodating chamber through the steam hole 43, and thereby accommodated The chamber is electrically connected to the outside of the pot 10.
  • the magnetic member 42 is formed in a spherical shape.
  • the magnetic member 42 is formed substantially in a spherical shape, and the radius of the spherical magnetic member 42 is larger than the diameter of the steam hole 43.
  • the electromagnet 41 When the electromagnet 41 is energized, the electromagnet 41 attracts the spherical magnetic member 42 out of the steam hole 43, and the inside of the pot 10 communicates with the outside; when the electromagnet 41 is deenergized, the electromagnet 41 is separated from the spherical magnetic member 42, the magnetic member The steam hole 43 is closed, and the inside and the outside of the pot body 10 are blocked.
  • the inner portion of the pot body 10 can be closed by the cooperation of the magnetic member 42 and the steam hole 43, and the magnetic member 42 is disposed in a spherical shape, so that the magnetic member 42 is more likely to move under the action of the electromagnet 41. Improve control sensitivity.
  • FIGS. 1 through 4 A pressure control method of a cooking appliance according to an embodiment of the present invention will be described below with reference to FIGS. 1 through 4.
  • the cooking appliance 100 includes a pot body 10, a lid body 20, and a pressure valve 40 provided on the lid body 20.
  • the pressure control method of the cooking appliance comprises the following steps: S1, controlling the cooking appliance to start working, the pressure valve is in an open state; S2, detecting one of temperature and pressure in the pot body to control the pressure valve to be closed or opened.
  • the cooking utensil When the user uses the cooking utensil, the food and water are first put into the pot body, the lid body is closed, and the heating device for controlling the cooking appliance heats the pot body inside the main body. At this time, the pressure valve on the cover body is in an open state, that is, the initial state of the pressure valve is an open state, and the body of the pot is in communication with the outside of the pot body.
  • the detecting device detects the temperature or pressure in the pot body, and transmits the temperature detecting signal or the pressure detecting signal to the control unit, and the control unit compares the temperature detecting value with the predetermined temperature value or performs the pressure detecting value with the predetermined pressure value. Comparing, according to the temperature or pressure comparison determination result, the pressure valve is controlled to switch between the closed state or the open state, thereby realizing the repeated process of pressure increase and pressure reduction in the pot body, thereby realizing multiple pressure relief and boiling effects on the water in the pot body.
  • the control of the constant pressure in the pot body is realized, and at the same time, the pressure value in the pot can be ensured to be within a safe range, the safety performance of the cooking appliance is improved, the components are effectively reduced, the determination logic is simplified, and the reliability is improved.
  • the pressure control method of the cooking appliance by detecting one of the temperature and the pressure in the pot body, the detected value is compared with a predetermined value, thereby controlling the closing or opening of the pressure valve, thereby merely
  • the control of the variable pressure in the pot body can be realized by determining the temperature or pressure as a single element, which not only has a single component, low cost, but also has simple decision logic and control procedures, and can reduce the error rate while ensuring the normal operation of the cooking appliance. Improve the reliability of pressure control in the pot.
  • step S2 comprises:
  • the detecting device detects the pressure in the pot body, thereby the first pressure value; secondly, the detecting device transmits the signal of the detected first pressure value to the control unit, and the control unit is pre-configured.
  • a predetermined pressure value P1 the control unit compares the first pressure value with the first predetermined pressure value P1.
  • the pressure valve When the first pressure value is not greater than the first predetermined pressure value P1, the pressure valve is kept open, the pot body communicates with the outside, the heating device continues to heat the pot body, and the air inside the pot body is partially discharged, which is beneficial to the formation of water vapor in the pot body.
  • the control unit When the first pressure value is greater than the first predetermined pressure value P1, the control unit outputs a signal to the pressure valve, the control pressure valve is closed, the inside of the pot body and the outside of the pot body are blocked, the water in the pot body continues to boil and vaporize, and the pressure in the pot body continues to rise. In order to achieve cooking of the food in the pot.
  • step S2 further includes:
  • the detecting device transmits a signal of the detected second pressure value to the control unit, and the control unit further pre-sets a second predetermined pressure value P2, and the control unit performs the second pressure value and the second predetermined pressure value P2. Comparison.
  • the pressure valve When the second pressure value is not greater than the second predetermined pressure value P2, the pressure valve is kept in the closed state, the inside of the pot body is not connected to the outside, the water inside the pot body continues to boil and vaporize, and the pressure in the pot body continues to rise, from the guaranteed pot body. Increased pressure for improved cooking.
  • the control unit When the second pressure value is greater than the second predetermined pressure value P2, the control unit outputs a signal to the pressure valve, the control pressure valve is opened, the inside of the pot body communicates with the outside of the pot body, and the pot body generates pressure relief to realize water collapse of the pot body.
  • the effect is to avoid excessive pressure in the pot in time, keep the pressure inside the pot within a safe range, and improve the safety of use.
  • step S2 further includes:
  • the detecting device sends a signal of the detected third pressure value to the control unit, and the control unit further pre-sets a third predetermined pressure value P3, and the control unit sets the third pressure value and the third predetermined pressure value. P3 is compared.
  • the control unit ambiguously determines that there is still water in the pot body (ie, the water in the pot body continues to boil and vaporize, so that the pressure or temperature in the pot body continues to rise), thereby controlling the pressure valve to continue. Close-open for repeated steps of boosting and depressurizing, thereby achieving continuous variable pressure and multiple pressure relief collapse effects.
  • the control unit When the detecting device detects that the third pressure value in the pot is less than the third predetermined pressure value P3, the control unit ambiguously determines that the water in the pot is already small, the pressure or temperature cannot be increased, and the control unit outputs a signal to the pressure valve to control The pressure valve is closed and the heating is stopped or switched to the risotto insulation stage until the end of the cooking.
  • the third predetermined pressure value P3 is less than the first predetermined pressure value P1, and the first predetermined pressure value P1, the second predetermined pressure value P2, and the third predetermined pressure value P3 are in conformity with the interior of the pot body at a later stage of the heating phase, The actual conditions of the boiling phase and the risotto phase ensure the reliability of the variable pressure control.
  • the first predetermined pressure value P1 is 101 KPa to 104 KPa
  • the second predetermined pressure value P2 is 110 KPa to 205 KPa
  • the third predetermined pressure value P3 is 100 KPa to 101 KPa.
  • the first predetermined pressure value P1 is 101 KPa to 104 KPa. At this time, a large amount of water vapor is generated inside the pot body, and although the pressure valve is opened, the pressure in the pot is stably increased, and the pressure is increased.
  • the size is medium, for example, the first pressure value is 103 KPa; when the pot body is in the boiling stage, the second predetermined pressure value P2 is 110 KPa to 205 KPa, at which time a large amount of water vapor is generated inside the pot body, and the pressure valve is closed.
  • the pressure in the pot is increased to the upper limit and the pressure is maximum.
  • the second pressure is 120 KPa.
  • the third predetermined pressure value P3 is 100 KPa to 101 KPa. At this time, there is only a small amount of water vapor. In the pot, the pressure is small, such as: the third pressure value is 101KPa.
  • step S2 includes:
  • the detecting device transmits a signal of the detected first temperature value to the control unit, and the control unit is pre-set with a first predetermined temperature value K1, and the control unit sets the first temperature value and the first predetermined temperature value K1. Compare.
  • the pressure valve When the first temperature value is not greater than the first predetermined temperature value K1, the pressure valve is kept open, the body of the pot is in communication with the outside, the heating device continues to heat the pot body, and the air inside the pot body is partially discharged, which is beneficial to the formation of water vapor in the pot body.
  • the control unit When the first temperature value is greater than the first predetermined temperature value K1, the control unit outputs a signal to the pressure valve, the control pressure valve is closed, the inside of the pot body is blocked from the outside of the pot body, the water in the pot body is continuously boiled, and the pressure in the pot body continues to rise. In order to achieve cooking of the food in the pot.
  • step S2 further includes:
  • the detecting device sends a signal of the detected second temperature value to the control unit, and the control unit further pre-sets a second predetermined temperature value K2, and the control unit performs the second temperature value and the second predetermined temperature value K2. Comparison.
  • the pressure valve When the second temperature value is not greater than the second predetermined temperature value K2, the pressure valve is kept in the closed state, the inside of the pot body is not connected to the outside, the water inside the pot body continues to boil and vaporize, and the pressure in the pot body continues to rise, from the guaranteed pot body. Increased pressure for improved cooking.
  • the control unit When the second temperature value is greater than the second predetermined temperature value K2, the control unit outputs a signal to the pressure valve to control the pressure valve Open, the inside of the pot body communicates with the outside of the pot body, the pot body generates pressure relief, and the water boiling effect of the pot body is realized, thereby avoiding excessive pressure in the pot body in time, keeping the pressure inside the pot body within a safe range, and improving the safety of use.
  • step S2 further includes:
  • the detecting device transmits a signal of the detected third temperature value to the control unit, and the control unit further pre-sets a third predetermined temperature value K3, and the control unit sets the third temperature value and the third predetermined temperature value. K3 is compared.
  • the control unit ambiguously determines that there is still water in the pot body (ie, the water in the pot body continues to boil and vaporize, so that the pressure or temperature in the pot body continues to rise), thereby controlling the pressure valve to continue. Close-open for repeated steps of boosting and depressurizing, thereby achieving continuous variable pressure and multiple pressure relief collapse effects.
  • the control unit When the detecting device detects that the third temperature value in the pot is less than the third predetermined temperature value K3, the control unit ambiguously determines that the water in the pot is already small, the pressure or temperature cannot be increased, and the control unit outputs a signal to the pressure valve to control The pressure valve is closed and the heating is stopped or switched to the risotto insulation stage until the end of the cooking.
  • the third predetermined temperature value K3 is less than the second predetermined temperature value K2, and the third predetermined temperature value K3 is greater than the first predetermined temperature value such that the first predetermined temperature value K1, the second predetermined temperature value K2, and The third predetermined temperature value K3 conforms to the actual situation in the interior of the pot body in the late stage of the heating phase, the boiling phase and the risotto phase, thereby ensuring the reliability of the variable pressure control.
  • the first predetermined temperature value K1 is 75 ° C to 98 ° C
  • the second predetermined temperature value K2 is 102 ° C to 120 ° C
  • the third predetermined temperature value K3 is 95 ° C to 100 ° C.
  • the first predetermined temperature value K1 when the pot body is in the heating stage, the first predetermined temperature value K1 may be 75 ° C to 98 ° C. At this time, the pot body is not completely filled with water vapor, and the first temperature value in the pot body is much lower than 100 ° C. For example, the first predetermined temperature value K1 is 80 °C.
  • the second predetermined temperature value K2 When the pot body is in the boiling stage, the second predetermined temperature value K2 is 102 ° C ⁇ 120 ° C, at this time, a large amount of water vapor is generated inside the pot body and the pressure valve is closed, the internal pressure of the pot body continues to increase, corresponding to the pot body
  • the second temperature value may be higher, for example, the second predetermined temperature value K2 may be 105 ° C (pressure is 120 KPa).
  • the third predetermined temperature value K3 is 95 ° C ⁇ 100 ° C, at this time, there is only a small amount of water vapor inside the pot inside the pot, but the heat field is relatively stable, for example, the third predetermined temperature
  • the value K3 can be 98 °C.
  • the detection target in step S25 and step S23 is the same as the detection target in step S21. That is to say, the detection targets in step S21, step S23, and step S25 are both detections of the pressure in the pot by the detecting device, or the detection targets in steps S21, S23, and S25 are detection of the temperature in the pot by the detecting device. In order to ensure that the control unit can effectively control the variable pressure in the pot according to a single determination factor (temperature or pressure).
  • the pressure control method of the cooking appliance according to the embodiment of the present invention is judged by using temperature or pressure as a single element
  • the control of the variable pressure in the pot body can be realized, not only the single component, the cost is low, but also the decision logic and the control program are simple, the error rate can be reduced while ensuring the normal operation of the cooking utensil, and the reliability of the pressure control in the pot body is improved. .
  • the terms “installation”, “connected”, “connected”, “fixed” and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. Or in one piece; it may be a mechanical connection, or it may be an electrical connection or a communication with each other; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship between two elements. Unless otherwise expressly defined. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

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Abstract

一种烹饪器具(100)的压力控制方法，其中，烹饪器具(100)包括锅体(10)、盖体(20)和设在盖体(20)上的压力阀(40)，压力控制方法包括以下步骤：S1、控制烹饪器具(100)开机工作，压力阀(40)处于打开状态；S2、对锅体(10)内的温度和压力中的一个进行检测以控制压力阀(40)关闭或打开。

Description

烹饪器具的压力控制方法 技术领域
本发明涉及烹饪器具技术领域，更具体地，涉及一种烹饪器具的压力控制方法。
背景技术
相关技术中，烹饪器具在工作时，通过改变内部压力可以提高烹饪效果，例如电饭煲煮饭时，通过改变锅内的压力，可以提升米饭效果及平整度，但目前锅内压力的控制通常通过压力阀的“开”、“关”切换实现，而在控制压力改变的过程中，需要对温度和时间进行多重判定，判定逻辑复杂、程序复杂，容易出现各种报错，导致产品不能正常工作。
发明内容
本发明旨在至少在一定程度上解决相关技术中的技术问题之一。
为此，本发明提出一种烹饪器具的压力控制方法，该烹饪器具的压力控制方法的判定逻辑简单、程序简单、报错率低、可以有效地保证烹饪器具的压力控制可靠性，提高烹饪效果。
根据本发明实施例的烹饪器具的压力控制方法，其中，烹饪器具包括锅体、盖体和设在所述盖体上的压力阀，所述压力控制方法包括以下步骤：S1、控制所述烹饪器具开机工作，所述压力阀处于打开状态；S2、对所述锅体内的温度和压力中的一个进行检测以控制所述压力阀关闭或打开。
根据本发明实施例的烹饪器具的压力控制方法，通过对锅体内的温度和压力中的一个进行检测，将检测值与预定值进行对比，进而控制压力阀的关闭或打开，从而仅仅通过将温度或压力作为单一要素进行判定即可实现对锅体内可变压力的控制，不仅元件单一、成本低，而且判定逻辑和控制程序简单、可以在保证烹饪器具正常工作的同时减小报错率，提高锅体内压力控制的可靠性。
另外，根据本发明实施例的烹饪器具的压力控制方法，还可以具有如下附加的技术特征：
根据本发明的一个实施例，所述步骤S2包括：S21、对所述锅体内的温度和压力中的一个进行检测得到第一温度值或第一压力值；S22、将所述第一温度值与第一预定温度值比较或将所述第一压力值与第一预定压力值比较，当所述第一温度值大于所述第一预定温度值或所述第一压力值大于所述第一预定压力值时，控制所述压力阀关闭。
根据本发明的一个实施例，所述步骤S2还包括：S23、对所述锅体内的温度和压力中的一个进行检测得到第二温度值或第二压力值；S24、将所述第二温度值与第二预定温度值比较或将所述第二压力值与第二预定压力值比较，当所述第二温度值大于所述第二预定温度值 或所述第二压力值大于所述第二预定压力值时，控制所述压力阀打开，所述第二预定温度值大于所述第一预定温度值，所述第二预定压力值大于所述第一预定压力值。
根据本发明的一个实施例，所述步骤S2还包括：S25、对所述锅体内的温度和压力中的一个进行检测得到第三温度值或第三压力值；S26、将所述第三温度值与第三预定温度值比较或将所述第三压力值与第三预定压力值比较，当所述第三温度值小于所述第三预定温度值或所述第三压力值小于所述第三预定压力值时，控制所述压力阀关闭，所述第三预定温度值小于所述第二预定温度值且大于所述第一预定温度值，所述第三预定压力值小于所述第一预定压力值。
根据本发明的一个实施例，所述步骤S25、所述步骤S23中的检测对象与所述步骤S21中的检测对象相同。
根据本发明的一个实施例，所述第一预定温度值为75℃～98℃、所述第二预定温度值为102℃～120℃、所述第三预定温度值为95℃～100℃。
根据本发明的一个实施例，所述第一预定压力值为101KPa～104KPa、所述第二预定压力值为110KPa～205KPa、所述第三预定压力值为100KPa～101KPa。
根据本发明的一个实施例，所述压力阀上设有蒸汽孔，所述压力阀还包括电磁体和磁吸件，所述磁吸件设在所述蒸汽孔处并封闭所述蒸汽孔，所述电磁体通电时吸引或排斥所述磁吸件以使所述磁吸件脱离并打开所述蒸汽孔；或，所述压力阀上设有蒸汽孔，所述烹饪器具还包括驱动件和排汽件，所述排汽件设在所述蒸汽孔处并封闭所述蒸汽孔，所述驱动件接到指令时推动所述排汽件以使所述排汽件脱离并打开所述蒸汽孔。
根据本发明的一个实施例，所述磁吸件或排汽件可活动地设在所述压力阀内。
根据本发明的一个实施例，所述磁吸件或排汽件形成为球状。
本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
图1是根据本发明实施例的烹饪器具的剖视图；
图2是图1中所示的A部放大图。
图3是根据本发明一个实施例的烹饪器具的压力控制方法的示意图；
图4是根据本发明又一个实施例的烹饪器具的压力控制方法的示意图；
附图标记：
100：烹饪器具；
10：锅体；20：盖体；30：控制单元；
40：压力阀；41：电磁铁；42：磁吸件；43：蒸汽孔；
50：检测装置；60：主体；70：加热装置。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
下面首先结合附图1和图2具体描述根据本发明实施例的烹饪器具100。
如图1所示，根据本发明实施例的烹饪器具100包括锅体10、盖体20和设在盖体20上的压力阀40。
锅体10可以设在烹饪器具100的主体60内。锅体10上端设有盖体20，盖体20可以封闭锅体10的上端以保证锅体10内的压力。盖体20上设有检测装置50以及压力阀40。例如，检测装置50可以是压力检测装置，或者温度检测装置。烹饪器具100的主体60上设有控制单元30以及加热装置70，控制单元30与检测装置50以及压力阀40相连。
烹饪器具100工作时，检测装置50检测到锅体10内的压力或者温度，并且输出信号到控制单元30，控制单元30内预设有预定压力值或预定温度值，控制单元30根据压力检测值或温度检测值与控制单元30内预设的预定压力值或预定温度值比较，进行逻辑判定，进而输出信号控制压力阀40的打开或者关闭，从而实现对锅体10内压力的控制。
如图2所示，压力阀40上设有蒸汽孔43，当盖体20封闭时，锅体10内部通过蒸汽阀上的蒸汽孔43与锅体10外部连通。
在一些示例中，烹饪器具100还包括电磁体和磁吸件42，磁吸件42设在蒸汽孔43处并封闭蒸汽孔43，电磁体通电时吸引磁吸件42以使磁吸件42脱离并打开蒸汽孔43。如图2所示，磁吸件42设在蒸汽孔43上端并且封闭蒸汽孔43，控制单元30根据锅体10内部压力或温度的检测值控制电磁阀通电或断电。当电磁阀通电时，电磁铁41产生磁力吸引或排斥磁吸件42，从而使得磁吸件42脱离配合以打开蒸汽孔43。
在另一些示例中，烹饪器具100包括驱动件和排汽件，压力阀40上具有蒸汽孔43，排汽件设在蒸汽孔43上并封闭蒸汽孔43，当驱动件接收到控制指令时，驱动件推动排汽件脱离蒸汽孔43从而打开蒸汽孔43，其中排汽件可以大致形成为球状，并且可活动地设在压力阀40内。
在一些示例中，磁吸件42可活动地设在压力阀40内。如图2所示，压力阀40上设有用于容纳磁吸件42的容纳腔室，蒸汽孔43与容纳腔室导通，锅体10内部可以通过蒸汽孔43、容纳腔室与锅体10外部连通，磁吸件42可活动地设在容纳腔室内。当电磁阀通电时， 电磁铁41产生磁力吸引或排斥磁吸件42，从而使得磁吸件42脱离或配合以打开或封闭蒸汽孔43，从而使得锅体10内部通过蒸汽孔43与容纳腔室导通，进而通过容纳腔室与锅体10外部导通。
在一些具体示例中，磁吸件42形成为球状。
参照图2，磁吸件42大致形成为球状，球状磁吸件42的半径大于蒸汽孔43的孔径。当电磁铁41通电时，电磁铁41吸引球状磁吸件42脱离蒸汽孔43，锅体10内部与外部连通；当电磁铁41断电时，电磁铁41脱离球状磁吸件42，磁吸件42封闭蒸汽孔43，锅体10内部与外部被阻断。由此磁吸件42与蒸汽孔43的配合，可以实现对锅体10内部的封闭，而且，将磁吸件42设置为球状，也使得磁吸件42在电磁铁41作用下更容易产生运动，提高控制灵敏度。
下面结合附图1至图4描述根据本发明实施例的烹饪器具的压力控制方法。
根据本发明实施例的烹饪器具100包括锅体10、盖体20和设在盖体20上的压力阀40。烹饪器具的压力控制方法包括以下步骤：S1、控制烹饪器具开机工作，压力阀处于打开状态；S2、对锅体内的温度和压力中的一个进行检测以控制压力阀关闭或打开。
用户使用烹饪器具时，首先将食物和水放入锅体内，关闭盖体，控制烹饪器具的加热装置对主体内部的锅体进行加热。此时，盖体上的压力阀处于打开状态，即压力阀的起始状态是打开状态，锅体内与锅体外连通。
其次，检测装置对锅体内的温度或者压力进行检测，并且将温度检测信号或者压力检测信号传输到控制单元，控制单元将温度检测值与预定温度值进行比较或者将压力检测值与预定压力值进行比较，根据温度或压力比较判定结果控制压力阀在关闭状态或打开状态之间进行切换，从而实现锅体内升压、降压的反复过程，进而实现对锅体内水的多次泄压崩沸效果，进而实现锅体内持续可变压力的控制，同时，也可以保证锅内的压力值处于安全范围内，提高烹饪器具的安全性能，有效地减少元件，简化判定逻辑，提高可靠性。
由此，根据本发明实施例的烹饪器具的压力控制方法，通过对锅体内的温度和压力中的一个进行检测，将检测值与预定值进行对比，进而控制压力阀的关闭或打开，从而仅仅通过将温度或压力作为单一要素进行判定即可实现对锅体内可变压力的控制，不仅元件单一、成本低，而且判定逻辑和控制程序简单、可以在保证烹饪器具正常工作的同时减小报错率，提高锅体内压力控制的可靠性。
在本发明的一些实施例中，若通过对锅体内的压力进行检测，步骤S2包括：
S21、对锅体内的压力进行检测得到第一压力值；
S22、将第一压力值与第一预定压力值比较，当第一压力值大于第一预定压力值时，控制压力阀关闭。
如图3所示，首先，检测装置对锅体内的压力进行检测，从而第一压力值；其次，检测装置将检测得到的第一压力值的信号输送到控制单元，控制单元内预设有第一预定压力值P1，控制单元将第一压力值与第一预定压力值P1进行比较。
当第一压力值不大于第一预定压力值P1时，保持压力阀打开状态，锅体内同外部连通，加热装置持续加热锅体，锅体内部空气部分排出，有利于锅体内水蒸汽的形成。
当第一压力值大于第一预定压力值P1时，控制单元输出信号到压力阀，控制压力阀关闭，锅体内部与锅体外部阻断，锅体内的水持续沸腾汽化，锅体内压力持续上升，从而实现对锅体内食物的蒸煮。
在一些示例中，步骤S2还包括：
S23、对锅体内的压力进行检测得到第二压力值；
S24、将第二压力值与第二预定压力值比较，当第二压力值大于第二预定压力值时，控制压力阀打开，第二预定压力值大于第一预定压力值。
参照图3，检测装置将检测得到的第二压力值的信号输送到控制单元，控制单元内还预设有第二预定压力值P2，控制单元将第二压力值与第二预定压力值P2进行比较。
当第二压力值不大于第二预定压力值P2时，保持压力阀处于关闭状态，锅体内部与外部不连通，锅体内部的水持续沸腾汽化，锅体内的压力持续上升，从保证锅体内压力提升，提高烹煮效果。
当第二压力值大于第二预定压力值P2时，控制单元输出信号到压力阀，控制压力阀打开，锅体内部与锅体外部连通，锅体产生泄压，实现锅体的水的崩沸效果，从而及时避免锅体内压力过大，保持锅体内压力处于安全范围内，提高使用安全性。
在一些示例中，步骤S2还包括：
S25、对锅体内的压力进行检测得到第三压力值；
S26、将第三压力值与第三预定压力值比较，当第三压力值小于第三预定压力值时，控制压力阀关闭，第三预定压力值小于第一预定压力值。
如图3所示，检测装置将检测得到的第三压力值的信号输送到控制单元，控制单元内还预设有第三预定压力值P3，控制单元将第三压力值与第三预定压力值P3进行比较。
当第三压力值不小于第三预定压力值P3时，控制单元模糊判定锅体内还有水(即锅体内的水继续沸腾汽化，从而使得锅体内压力或温度持续上升)，从而控制压力阀继续关闭-打开以进行升压、降压的反复过程，从而实现持续的可变压力、多次的泄压崩沸效果。
而当检测装置检测到锅内的第三压力值小于第三预定压力值P3时，控制单元模糊判定锅内水已经很少了，压力或温度无法提升了，控制单元输出信号到压力阀，控制压力阀关闭，同时停止加热或切换到焖饭保温阶段，直到煮饭结束。
在一些优选地示例中，第三预定压力值P3小于第一预定压力值P1，第一预定压力值P1、第二预定压力值P2和第三预定压力值P3符合锅体内部处于加热阶段后期、沸腾阶段和焖饭阶段的实际情况，从而保证对可变压力控制的可靠性。
可选地，第一预定压力值P1为101KPa～104KPa、第二预定压力值P2为110KPa～205KPa、第三预定压力值P3为100KPa～101KPa。
具体地，当锅体内处于加热阶段后期时，第一预定压力值P1为101KPa～104KPa，此时，锅体内部大量的水蒸汽产生，虽然压力阀是开的，但锅内压力稳定上升，压力大小为中，例如，第一压力值为103KPa；当锅体内处于沸腾阶段时，第二预定压力值P2为110KPa～205KPa，此时，锅体内部大量的水蒸汽产生，且压力阀是关闭的，锅内压力极速增加到上限，压力最大，例如，第二压力值为120KPa；当锅体内处于焖饭阶段时，第三预定压力值P3为100KPa～101KPa，此时，只有很少的水蒸汽在锅内，压力较小，比如：第三压力值101KPa。
类似地，在本发明的另一些实施例中，若通过对锅体内的温度进行检测，步骤S2包括：
S21、对锅体内的温度进行检测得到第一温度值；
S22、将第一温度值与第一预定温度值比较，当第一温度值大于第一预定温度值时，控制压力阀关闭。
如图4所示，检测装置将检测得到的第一温度值的信号输送到控制单元，控制单元内预设有第一预定温度值K1，控制单元将第一温度值与第一预定温度值K1进行比较。
当第一温度值不大于第一预定温度值K1时，保持压力阀打开状态，锅体内同外部连通，加热装置持续加热锅体，锅体内部空气部分排出，有利于锅体内水蒸汽的形成。
当第一温度值大于第一预定温度值K1时，控制单元输出信号到压力阀，控制压力阀关闭，锅体内部与锅体外部阻断，锅体内的水持续沸腾汽化，锅体内压力持续上升，从而实现对锅体内食物的蒸煮。
在一些示例中，步骤S2还包括：
S23、对锅体内的温度进行检测得到第二温度值；
S24、将第二温度值与第二预定温度值比较。当第二温度值大于第二预定温度值时，控制压力阀打开，第二预定温度值大于第一预定温度值。
参照图4，检测装置将检测得到的第二温度值的信号输送到控制单元，控制单元内还预设有第二预定温度值K2，控制单元将第二温度值与第二预定温度值K2进行比较。
当第二温度值不大于第二预定温度值K2时，保持压力阀处于关闭状态，锅体内部与外部不连通，锅体内部的水持续沸腾汽化，锅体内的压力持续上升，从保证锅体内压力提升，提高烹煮效果。
当第二温度值大于第二预定温度值K2时，控制单元输出信号到压力阀，控制压力阀打 开，锅体内部与锅体外部连通，锅体产生泄压，实现锅体的水的崩沸效果，从而及时避免锅体内压力过大，保持锅体内压力处于安全范围内，提高使用安全性。
在一些示例中，步骤S2还包括：
S25、对锅体内的温度进行检测得到第三温度值；
S26、将第三温度值与第三预定温度值比较，当第三温度值小于第三预定温度值时，控制压力阀关闭，第三预定温度值小于第二预定温度值且大于第一预定温度值。
如图4所示，检测装置将检测得到的第三温度值的信号输送到控制单元，控制单元内还预设有第三预定温度值K3，控制单元将第三温度值与第三预定温度值K3进行比较。
当第三温度值不小于第三预定温度值K3时，控制单元模糊判定锅体内还有水(即锅体内的水继续沸腾汽化，从而使得锅体内压力或温度持续上升)，从而控制压力阀继续关闭-打开以进行升压、降压的反复过程，从而实现持续的可变压力、多次的泄压崩沸效果。
而当检测装置检测到锅内的第三温度值小于第三预定温度值K3时，控制单元模糊判定锅内水已经很少了，压力或温度无法提升了，控制单元输出信号到压力阀，控制压力阀关闭，同时停止加热或切换到焖饭保温阶段，直到煮饭结束。
在一些优选示例中，第三预定温度值K3小于第二预定温度值K2，且第三预定温度值K3大于第一预定温度值，从而使得第一预定温度值K1、第二预定温度值K2和第三预定温度值K3符合锅体内部处于加热阶段后期、沸腾阶段和焖饭阶段的实际情况，从而保证对可变压力控制的可靠性。
可选地，第一预定温度值K1为75℃～98℃、第二预定温度值K2为102℃～120℃、第三预定温度值K3为95℃～100℃。
具体地，当锅体内处于加热阶段时，第一预定温度值K1可以为75℃～98℃，此时，锅体内还没有完全充满水蒸汽，锅体内的第一温度值远比100℃低，例如，第一预定温度值K1为80℃。当锅体内处于沸腾阶段时，第二预定温度值K2为102℃～120℃，此时，锅体内部产生大量水蒸汽且压力阀处于关闭状态，锅体内部压力持续增加，对应的锅体内第二温度值会更高，例如，第二预定温度值K2可以105℃(压力为120KPa)。当锅体内处于焖饭阶段时，第三预定温度值K3为95℃～100℃，此时，锅体内部只有很少的水蒸汽在锅内，但热场相对稳定，例如，第三预定温度值K3可以为98℃。
其中，步骤S25、步骤S23中的检测对象与步骤S21中的检测对象相同。也就是说，步骤S21、步骤S23以及步骤S25中的检测对象均是检测装置对锅体内压力的检测，或者步骤S21、步骤S23以及步骤S25中的检测对象均是检测装置对锅体内温度的检测，从而保证控制单元根据单一判定要素(温度或压力)对锅体内可变压力进行有效控制。
根据本发明实施例的烹饪器具的压力控制方法，通过将温度或压力作为单一要素进行判 定即可实现对锅体内可变压力的控制，不仅元件单一、成本低，而且判定逻辑和控制程序简单、可以在保证烹饪器具正常工作的同时减小报错率，提高锅体内压力控制的可靠性。
根据本发明实施例的烹饪器具100的压力控制方法的其他构成以及操作对于本领域的普通技术人员来说是可知的，在此不再详细描述。在本发明的描述中，需要理解的是，术语“中心”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接或彼此可通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (10)

  1. 一种烹饪器具的压力控制方法，其特征在于，所述烹饪器具包括锅体、盖体和设在所述盖体上的压力阀，所述压力控制方法包括以下步骤：
    S1、控制所述烹饪器具开机工作，所述压力阀处于打开状态；
    S2、对所述锅体内的温度和压力中的一个进行检测以控制所述压力阀关闭或打开。
  2. 根据权利要求1所述的烹饪器具的压力控制方法，其特征在于，所述步骤S2包括：
    S21、对所述锅体内的温度和压力中的一个进行检测得到第一温度值或第一压力值；
    S22、将所述第一温度值与第一预定温度值比较或将所述第一压力值与第一预定压力值比较，当所述第一温度值大于所述第一预定温度值或所述第一压力值大于所述第一预定压力值时，控制所述压力阀关闭。
  3. 根据权利要求2所述的烹饪器具的压力控制方法，其特征在于，所述步骤S2还包括：
    S23、对所述锅体内的温度和压力中的一个进行检测得到第二温度值或第二压力值；
    S24、将所述第二温度值与第二预定温度值比较或将所述第二压力值与第二预定压力值比较，当所述第二温度值大于所述第二预定温度值或所述第二压力值大于所述第二预定压力值时，控制所述压力阀打开，所述第二预定温度值大于所述第一预定温度值，所述第二预定压力值大于所述第一预定压力值。
  4. 根据权利要求3所述的烹饪器具的压力控制方法，其特征在于，所述步骤S2还包括：
    S25、对所述锅体内的温度和压力中的一个进行检测得到第三温度值或第三压力值；
    S26、将所述第三温度值与第三预定温度值比较或将所述第三压力值与第三预定压力值比较，当所述第三温度值小于所述第三预定温度值或所述第三压力值小于所述第三预定压力值时，控制所述压力阀关闭，所述第三预定温度值小于所述第二预定温度值且大于所述第一预定温度值，所述第三预定压力值小于所述第一预定压力值。
  5. 根据权利要求3所述的烹饪器具的压力控制方法，其特征在于，所述步骤S25、所述步骤S23中的检测对象与所述步骤S21中的检测对象相同。
  6. 根据权利要求3所述的烹饪器具的压力控制方法，其特征在于，所述第一预定温度值为75℃～98℃、所述第二预定温度值为102℃～120℃、所述第三预定温度值为95℃～100℃。
  7. 根据权利要求3所述的烹饪器具的压力控制方法，其特征在于，所述第一预定压力值为101KPa～104KPa、所述第二预定压力值为110KPa～205KPa、所述第三预定压力值为100KPa～101KPa。
  8. 根据权利要求1所述的烹饪器具的压力控制方法，其特征在于，所述压力阀上设有 蒸汽孔，所述烹饪器具还包括电磁体和磁吸件，所述磁吸件设在所述蒸汽孔处并封闭所述蒸汽孔，所述电磁体通电时吸引或排斥所述磁吸件以使所述磁吸件脱离并打开所述蒸汽孔；或，所述压力阀上设有蒸汽孔，所述烹饪器具还包括驱动件和排汽件，所述排汽件设在所述蒸汽孔处并封闭所述蒸汽孔，所述驱动件接到指令时推动所述排汽件以使所述排汽件脱离并打开所述蒸汽孔。
  9. 根据权利要求8所述的烹饪器具的压力控制方法，其特征在于，所述磁吸件或排汽件可活动地设在所述压力阀内。
  10. 根据权利要求9所述的烹饪器具的压力控制方法，其特征在于，所述磁吸件或排汽件形成为球状。
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