WO2009036653A1 - Electrical pressure cooker - Google Patents

Electrical pressure cooker Download PDF

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Publication number
WO2009036653A1
WO2009036653A1 PCT/CN2008/001519 CN2008001519W WO2009036653A1 WO 2009036653 A1 WO2009036653 A1 WO 2009036653A1 CN 2008001519 W CN2008001519 W CN 2008001519W WO 2009036653 A1 WO2009036653 A1 WO 2009036653A1
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WIPO (PCT)
Prior art keywords
plate
pot
signal
displacement
electric
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PCT/CN2008/001519
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French (fr)
Chinese (zh)
Inventor
Zechun Zhu
Jimeng Jiang
Original Assignee
Joyoung Company Limited
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Publication date
Priority to CN200710153849.2 priority Critical
Priority to CNB2007101538492A priority patent/CN100469289C/en
Application filed by Joyoung Company Limited filed Critical Joyoung Company Limited
Publication of WO2009036653A1 publication Critical patent/WO2009036653A1/en

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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00Cooking-vessels
    • A47J27/08Pressure-cookers; Lids or locking devices specially adapted therefor
    • A47J27/086Pressure-cookers; Lids or locking devices specially adapted therefor with built-in heating means

Abstract

An electrical pressure cooker has an external cooker (1), an internal cooker (2), a sealing device (3), an electrical heating device (4), a flexible element (5), a safety device, a controlling circuit which controls the electrical pressure cooker. The electrical pressure cooker has also capacitance sensor (8). The capacitance sensor (8) has a first electrode board (81) and a second electrode board (82). The electrical heating device (4) is moved by pressure and causes the first electrode board (81) to move with respect to the second electrode board (82) to change the distance between the first electrode board (81) and the second electrode board (82) and then a changing signal of capacity is generated and inputted into the controlling circuit. The controlling circuit processes the signal and controls the electrical pressure cooker basing it.

Description

一种电压力锅 技术领域  Electric pressure cooker
本发明涉及一种压力锅, 特别涉及一种电压力锅。  The invention relates to a pressure cooker, in particular to an electric pressure cooker.
背景技术  Background technique
目前, 电压力锅由于其节能、 快速、 方便的优点, 替代现有老式压 力锅, 成为家庭厨房日用家电品之一。 现有市场上出售的电压力锅, 在 压力控制以及压力调节方面主要有三种类型。  At present, electric pressure cookers have become one of the household appliances for home kitchens because of their advantages of energy saving, quickness and convenience, instead of the existing old-fashioned pressure cookers. There are three main types of electric pressure cookers available on the market for pressure control and pressure regulation.
第一种类型, 是在电压力锅外锅的底部设置一闪动开关, 加热盘设 置可触动闪动开关通断的触杆。 利用内锅工作时随内部压力的变化而上 下移动来触发或断开加热装置。 当电压力锅工作时, 锅内压力升高, 加 热盘向下位移, 当锅内压力升到一定值后, 加热盘向下移动带动触杆触 动闪动开关, 使闪动开关断开, 加热装置停止工作; 当压力下降后, 加 热盘向上位移, 带动触杆离开闪动开关, 闪动开关闭合, 导通加热装置 工作。 以此来达到控制压力锅内部压力的目的。  The first type is to set a flashing switch at the bottom of the outer pot of the electric pressure cooker, and the heating plate is provided with a contact bar that can touch the open switch of the flashing switch. The heating device is triggered or disconnected by moving up and down as the internal pressure changes as the inner pot operates. When the electric pressure cooker is working, the pressure in the pot rises and the heating plate moves downward. When the pressure in the pot rises to a certain value, the heating plate moves downward to bring the touch rod to touch the flashing switch, so that the flashing switch is disconnected, the heating device Stop working; When the pressure drops, the heating plate is displaced upwards, driving the lever to leave the flashing switch, the flashing switch is closed, and the heating device is turned on. In order to achieve the purpose of controlling the internal pressure of the pressure cooker.
如国家专利局公布的专利号为: 91100026. 7, 授权公告日为 1993年 6 月 23日的发明专利中, 公开了一种家用全密封自动电热压力烹饪器具。 由直立柱上的刚性臂和弹性臂, 将带有密封圈的锅盖和锅体压紧实现密 封, 给出了安全方便的全密封电烹锅弹性合开盖的合理结构。 以弹性臂 带动可调的闪动开关, 来控制锅底与弹性臂之间的电热板的加热状态, 实现电烹锅内压力的调整和自动控制, 组成了全密封电烹锅的理想模型。 又如国家专利局公布的专利号为: 200420094674. 4, 授权公告日为 2006年 1月 18日的实用新型专利中, 公开了一种自动调压的电压力锅, 包 括锅盖、 外壳、 外锅、 底座、 发热盘、 置于发热盘上的内锅、 弹性体和 压力开关, 所述发热盘与外锅底部之间设有弹性体连接, 发热盘上还设 有弹性体变形可触动压力开关的推动杆, 所述弹性体设有与发热盘连接 的承面, 以及支撑在外锅底部上的弹性支脚, 所述发热盘与外锅底部之 间设有至少一对所述的弹性体。 利用电压力锅工作时的压力变化, 加热 盘上下移动, 带动推动杆来触发压力开关, 控制压力锅的工作。 For example, the patent number published by the National Patent Office is: 91100026. 7. In the invention patent dated June 23, 1993, a household fully sealed automatic electrothermal pressure cooking appliance is disclosed. The rigid cover and the elastic arm on the upright column are used to seal the lid and the pot body with the sealing ring, which gives a reasonable structure for the safe and convenient fully sealed electric cooker elastic opening cover. The adjustable flashing switch is used to control the heating state of the electric heating plate between the bottom of the pan and the elastic arm, thereby realizing the adjustment and automatic control of the pressure in the electric cooking pot, and forming an ideal model of the fully sealed electric cooking pot. For example, the patent number published by the National Patent Office is: 200420094674. 4, the utility model patent issued on January 18, 2006, discloses an automatic pressure regulating electric pressure cooker, including a pot lid, a shell, and an outer pot. a base, a heating plate, an inner pot placed on the heating plate, an elastic body and a pressure switch, wherein the heating plate is provided with an elastic body connection between the bottom of the outer pot, and the heating plate is further provided with an elastic body deformable touch pressure switch The push rod, the elastic body is provided with a bearing surface connected to the heating plate, and an elastic leg supported on the bottom of the outer pot, and at least one pair of the elastic bodies is disposed between the heating plate and the bottom of the outer pot. By using the pressure change during the operation of the electric pressure cooker, the heating plate moves up and down, and the push rod is driven to trigger the pressure switch to control the work of the pressure cooker.
该类型的电压力锅存在的问题是压力不可调节,为一固定的压力值。 当烹饪不同的食物时, 只能通过设定时间的长短来实现。 而不同的食物 常需要不同的压力值以实现最佳的烹调效果。 如牛肉, 排骨或粥的最佳 烹饪压力值就不同。 如只通过调节时间长短来烹饪食物, 烹饪出的食物 在口感以及保留的营养成分方面较差。  A problem with this type of electric pressure cooker is that the pressure is not adjustable and is a fixed pressure value. When cooking different foods, it can only be achieved by setting the length of time. Different foods often require different pressure values to achieve the best cooking results. The best cooking pressure values for beef, ribs or porridge are different. If the food is cooked only by adjusting the length of time, the cooked food is poor in taste and retained nutrients.
第二种类型, 是在电压力锅的锅盖内部, 对应于内锅的上方设置温 度传感器或压力传感器, 来感知锅内的温度变化或压力变化, 并将信号 输入至电路进行检测控制。 当锅内压力达到设定压力时停止工作, 压力 回落时重新启动工作。  The second type is inside the lid of the electric pressure cooker. A temperature sensor or a pressure sensor is arranged above the inner pot to sense the temperature change or pressure change in the pot, and the signal is input to the circuit for detection control. When the pressure in the pot reaches the set pressure, it stops working, and when the pressure falls back, it restarts.
该方案中, 压力传感器或温度传感器必须与内锅的空腔直接接触, 以感知内锅中的压力或温度。 这样就使安装位置十分有限, 由于内锅需 要经常取出清洗, 电线的连接, 信号的传输也存在问题, 故无法直接设 置于内锅中。 一般都安装于锅盖上。 当内锅煮粥或烹饪其他食物时, 大 量的泡沬或细小的硬物会淹没或损坏传感器, 影响传感器的感应灵敏度, 使传感器无法正常工作。 对于使用温度传感器的方案, 需要先采集锅内温度, 在将相应的温 度转换为与该温度值对应的压力值, 这种转换有经过实验得出的一个一 般意义下的转换表, 见下表: In this solution, the pressure sensor or temperature sensor must be in direct contact with the cavity of the inner pot to sense the pressure or temperature in the inner pot. This makes the installation position very limited. Since the inner pot needs to be taken out frequently and cleaned, the connection of the wires, and the transmission of the signal are also problematic, it cannot be directly set in the inner pot. Usually installed on the lid. When the inner pot is porridge or cooking other foods, large The amount of bubbles or tiny hard objects can drown or damage the sensor, affecting the sensor's sensing sensitivity and preventing the sensor from working properly. For the solution using the temperature sensor, it is necessary to collect the temperature in the pot first, and convert the corresponding temperature into the pressure value corresponding to the temperature value. This conversion has a conversion table in the general sense obtained by experiments, see the following table. :
通过大量实验, 温度与压力有一定的对应关系, 从附表可以看出当水的温度超过 ioo°c, 温度每 增加 1度, 压力增加 5kPa。  Through a large number of experiments, there is a certain correspondence between temperature and pressure. It can be seen from the attached table that when the temperature of water exceeds ioo°c, the pressure increases by 5 kPa for every 1 degree increase in temperature.
注: 环境温度为 25°C, 1个标准大气压,  Note: The ambient temperature is 25 ° C, 1 standard atmosphere,
表中所指出的温度与压力的转换是在环境温度为 25度, 且环境压力 为 1个标准大气压下通过大量实验得出的。 当环境温度发生改变, 或环境 大气压力由于地势的不同而不是一个标准大气压时, 这个对应转换表是 不准确的。 此外, 对于温度传感器, 由于食物的重量、 密度、 所含有的 成分不同, 对于温度的要求也不尽相同。 也会影响到温度与压力的转换。 所以温度对应的压力值在不同的环境温度、 环境大气压力以及食物下是 不完全相同的。 直接导致的结果就是检测出现误差, 精度和灵敏性大幅 度下降。 进而影响压力的有效控制。 一旦压力的检测和控制失去准确性, 就会增大电压力锅使用的危险系数, 对于用户来说是不安全的。  The temperature and pressure transitions indicated in the table were obtained by extensive experiments at an ambient temperature of 25 °C and an ambient pressure of 1 standard atmosphere. This correspondence table is inaccurate when the ambient temperature changes, or when the ambient atmospheric pressure is different from the topography rather than a standard atmospheric pressure. In addition, for temperature sensors, the temperature requirements vary depending on the weight, density, and composition of the food. It also affects the conversion of temperature and pressure. Therefore, the pressure values corresponding to the temperature are not exactly the same under different ambient temperatures, ambient atmospheric pressures, and food. The direct result is that the detection error occurs, and the accuracy and sensitivity are greatly reduced. In turn, it affects the effective control of pressure. Once the pressure detection and control loses accuracy, it increases the risk factor used by the electric pressure cooker, which is unsafe for the user.
另外, 采用压力或温度传感器的制造成本偏高, 不利于电压力锅的 推广。 第三种类型, 是在电压力锅内部设置电感线圈, 利用内锅受压力变 化产生的位移来改变电感线圈的电感值, 并提取改变的电感值, 进行判 断处理, 以此来控制压力锅的压力。 In addition, the high manufacturing cost of using pressure or temperature sensors is not conducive to the promotion of electric pressure cookers. The third type is to set the inductance coil inside the electric pressure cooker, change the inductance value of the induction coil by the displacement caused by the pressure change of the inner pot, and extract the changed inductance value, and perform judgment processing to control the pressure of the pressure cooker.
该方案大多是在外锅下方设置一电感线圈, 在内锅底部或加热盘下 部设置一触杆。 当电压力锅内锅压力变化时, 内锅或加热盘上下移动, 带动触杆伸入或伸出电感线圈, 以此来改变电感值, 根据改变的电感值 进行判断处理, 控制电压力锅工作。  Most of the solutions are to provide an inductor coil under the outer pot and a contact rod at the bottom of the inner pot or under the heating plate. When the pressure of the pot in the electric pressure cooker changes, the inner pot or the heating plate moves up and down, and the contact rod is extended or extended to the inductance coil, thereby changing the inductance value, judging according to the changed inductance value, and controlling the electric pressure cooker to work.
由于电感线圈自身的特性不稳定, 易受到温度、 电磁等外部环境的 干扰, 对于锅内压力的检测容易存在误差, 进一歩影响压力控制的稳定 性。 而电压力锅压力的检测一旦出现偏差, 不稳定, 易受环境因素的干 扰, 很容易出现压力锅实际工作压力已经很大, 而检测到的压力由于稳 定性差等原因偏小的情况, 会造成暴锅的危险, 对用户来说, 是非常危 险的。 所以, 对于该类方案来说, 提高稳定性和抗温度、 电磁等外部环 境因素的干扰能力是十分重要的, 这直接关系到电压力锅的使用安全, 和用户的安全。  Since the characteristics of the inductor itself are unstable, they are easily interfered by external environments such as temperature and electromagnetic. The detection of the pressure in the pot is prone to errors, which further affects the stability of the pressure control. However, once the pressure of the electric pressure cooker is deviated, it is unstable, and it is easily interfered by environmental factors. It is easy to see that the actual working pressure of the pressure cooker is already large, and the detected pressure is too small due to poor stability, etc. The danger is very dangerous for the user. Therefore, for such schemes, it is very important to improve the stability and the ability to withstand external environmental factors such as temperature and electromagnetic, which is directly related to the safety of the electric pressure cooker and the safety of the user.
发明内容 Summary of the invention
为了解决上述现有技术中存在的问题, 本发明提供一种电压力锅。 实现了压力的实时检测和控制, 压力连续可调, 在烹饪的过程中可以根 本发明采用的主要技术方案为: 一种电压力锅, 包括外锅、 放置于 所述外锅中的内锅、 封闭内锅的密封装置、 与所述内锅相配合用于加热 所述内锅的电加热装置、 在所述电加热装置和外锅之间设置使内锅复位 的弹性元件、 安全装置, 以及控制所述电加热装置工作的控制电路, 所 述控制电路包括电容传感器, 信号处理电路和信号控制输出电路; 所述 电容传感器包括第一极板、 第二极板, 所述第一极板和第二极板上分别 设有信号采集端; 所述信号采集端与所述信号处理电路的信号接收端连 接; 所述电容传感器与所述电压力锅相配合, 感应电压力锅受压力变化 产生的位移变化, 并将该位移变化转换为电容量的变化信号输入至所述 信号处理电路; 所述信号处理电路的信号输出端与所述信号控制输出电 路的信号接收端连接, 所述信号处理电路将接收到的电容量信号进行处 理, 并将处理后的信号输出至所述信号控制输出电路; 所述信号控制输 出电路根据接收到的所述处理信号来控制电路, 以此控制所述电加热装 置的工作; In order to solve the above problems in the prior art, the present invention provides an electric pressure cooker. Real-time detection and control of pressure, continuous pressure adjustment, rooting in the cooking process The main technical solution adopted by the present invention is: an electric pressure cooker comprising an outer pot, an inner pot placed in the outer pot, a sealing device for closing the inner pot, and a matching inner pot to heat the inner pot An electric heating device, between the electric heating device and the outer pot, an elastic member for resetting the inner pot, a safety device, and a control circuit for controlling the operation of the electric heating device, the control circuit including a capacitance sensor, signal processing a circuit and a signal control output circuit; the capacitance sensor includes a first plate and a second plate, and the first plate and the second plate are respectively provided with a signal collecting end; the signal collecting end and the signal The signal receiving end of the processing circuit is connected; the capacitive sensor cooperates with the electric pressure cooker to induce a displacement change caused by a pressure change of the electric pressure cooker, and converts the displacement change into a change signal of the electric capacity and inputs the signal to the signal processing circuit a signal output end of the signal processing circuit is connected to a signal receiving end of the signal control output circuit, and the signal processing circuit Receiving the capacitance signal for processing, and outputting the processed signal to the signal control output circuit; the signal control output circuit controls the circuit according to the received processing signal, thereby controlling the electric heating device work;
本发明还采用如下附属技术方案: 所述控制电路还包括受温度和电 磁干扰时电容值与电容传感器的电容值同时发生、 同时变化的补偿电容; 所述补偿电容包括二个极板, 其中一个极板为所述电容传感器的第 所述第一极板与第二极板相对应, 所述内锅受压力变化产生位移变 化, 并由此直接或间接的带动所述第一极板相对于所述第二极板相向或 背向移动, 减少或增加与第二极板之间的距离, 以此产生变化的电容量 信号; 所述电加热装置与所述第一极板之间设置一位移传递件, 所述内锅 受压力变化产生位移变化,带动所述电加热装置移动, 所述电加热装置通 过所述位移传递件带动第一极板移动; The invention also adopts the following subsidiary technical solution: the control circuit further includes a compensation capacitor that simultaneously and simultaneously changes the capacitance value of the capacitance sensor and the capacitance value of the capacitance sensor under temperature and electromagnetic interference; the compensation capacitor includes two plates, one of which The first plate of the capacitive sensor corresponds to the second plate, and the inner pot is subjected to a change in pressure to generate a displacement change, and thereby directly or indirectly drives the first plate relative to the first plate. The second plates move toward or away from each other to reduce or increase the distance from the second plate, thereby generating a varying capacitance signal; A displacement transmitting member is disposed between the electric heating device and the first electrode plate, and the inner pot is subjected to displacement change by a pressure change to drive the electric heating device to move, and the electric heating device passes the displacement transmitting member Driving the first plate to move;
所述位移传递件为一螺杆,所述电加热装置和 /或第一极板上设有与 所述螺杆相对应的螺纹孔, 所述第一极板通过所述螺杆与所述电加热装 置相螺纹连接;  The displacement transmitting member is a screw, and the electric heating device and/or the first electrode plate is provided with a threaded hole corresponding to the screw, and the first plate passes through the screw and the electric heating device Phase threaded connection;
所述位移传递件为一顶杆, 在所述第一极板与第二极板之间设有可 驱动第一极板移动的弹性体, 所述顶杆的一端连接于所述电加热装置的 底部或第一极板, 另一端贴于第一极板或电加热装置的底部;  The displacement transmitting member is a jack, and an elastic body capable of driving the movement of the first plate is disposed between the first plate and the second plate, and one end of the jack is connected to the electric heating device The bottom or the first plate, the other end of which is attached to the bottom of the first plate or the electric heating device;
所述第二极板安装于所述外锅底部或通过一支架安装于所述外锅的 侧壁上;  The second plate is mounted on the bottom of the outer pot or mounted on the side wall of the outer pot through a bracket;
所述位移传递件与所述第一极板之间设置一杠杆装置, 所述位移传 递件带动所述杠杆装置的短臂端, 长臂端带动所述第一极板;  a lever device is disposed between the displacement transmitting member and the first plate, the displacement transmitting member drives the short arm end of the lever device, and the long arm end drives the first plate;
在电加热装置与外锅底部之间设置所述第一极板与第二极板, 所述 第一极板与第二极板位于同一平面上, 分别与所述电加热装置相对应, 所述电加热装置由内锅位移的变化而产生移动, 并由此改变第一极板与 第二极板产生的电场介质;  Between the electric heating device and the bottom of the outer pot, the first plate and the second plate are disposed, and the first plate and the second plate are located on the same plane, respectively corresponding to the electric heating device. The electric heating device is moved by the change of the displacement of the inner pot, and thereby the electric field medium generated by the first plate and the second plate is changed;
所述第一极板与第二极板相对应, 所述内锅受压力变化产生位移变 化, 并由此直接或间接的带动所述第一极板和 /或第二极板运动, 改变第 一极板与第二极板之间的有效对应面积, 以此产生变化的电容量信号; 所述电加热装置与所述第一极板之间设置一位移导杆, 所述位移导 杆的两端分别与所述电加热装置和 /或第一极板相连接, 所述内锅受压力 变化产生位移变化,带动所述电加热装置移动, 所述电加热装置通过所述 位移导杆带动第一极板移动, 所述第二极板安装于所述外锅底部或通过 一支架安装于所述外锅的侧壁上; The first plate corresponds to the second plate, and the inner pot is subjected to a change in pressure to generate a displacement change, and thereby directly or indirectly drives the first plate and/or the second plate to move, changing the first An effective corresponding area between the one plate and the second plate, thereby generating a varying capacitance signal; a displacement guide is disposed between the electric heating device and the first plate, and the displacement guide is The two ends are respectively connected to the electric heating device and/or the first plate, and the inner pot is under pressure The change generates a displacement change, and the electric heating device is moved. The electric heating device drives the first plate to move through the displacement guide rod. The second plate is mounted on the bottom of the outer pot or is mounted on a bracket. On the side wall of the outer pot;
所述位移导杆与所述第一极板之间设置一杠杆装置, 所述位移导杆 带动所述杠杆装置的短臂端, 长臂端带动所述的第一极板。  A lever device is disposed between the displacement guide and the first plate, the displacement guide rod drives the short arm end of the lever device, and the long arm end drives the first plate.
采用本发明带来的有益效果:  The beneficial effects brought by the invention are as follows:
( 1 )本发明采用电容传感器, 利用内锅或加热盘受压力的变化产生 位移, 采集变化的电容值, 并对电容值进行判断处理, 控制电压力锅的 工作。本发明采用的电容传感器实现了电容值随压力的变化而实时变化, 并根据实时变化的电容值来设定基准比较电容值, 以此来判断压力是否 超过用户所设定的压力值。 用户在设定基准比较电容值时可根据实际烹 饪的食物情况, 实时的调整压力值的范围以及工作时间, 利用现有成熟 的 CPU控制技术, 可以对压力、 时间等多参数信息进行检测并实现控制, 甚至做成类似电磁炉 "一键通"式的控制机构, 将不同食物对应的, 实 现了压力值的连续可调。 对于不同的食物设定不同的压力, 更好的保证 了食物的口味以及营养成分。  (1) The present invention employs a capacitive sensor that uses a change in pressure by an inner pot or a heating plate to generate displacement, collects a varying capacitance value, and judges the capacitance value to control the operation of the electric pressure cooker. The capacitive sensor used in the present invention realizes real-time change of the capacitance value with the change of the pressure, and sets the reference comparison capacitance value according to the capacitance value changed in real time, thereby determining whether the pressure exceeds the pressure value set by the user. When setting the reference comparison capacitance value, the user can adjust the range of pressure value and working time in real time according to the actual cooking food condition. Using the existing mature CPU control technology, the multi-parameter information such as pressure and time can be detected and realized. Control, and even made a control mechanism similar to the "one-button" type of induction cooker, which can adjust the pressure value continuously corresponding to different foods. Different pressures are set for different foods to better ensure the taste and nutrients of the food.
(2 ) 电容传感器稳定性好, 电容值信号可靠, 感应精度高。 由此带 来电压力锅的控制更准确, 精度更高。  (2) The capacitance sensor has good stability, the capacitance value signal is reliable, and the sensing precision is high. Therefore, the control of the incoming pressure cooker is more accurate and the precision is higher.
(3 )本发明的电容传感器的极板与内锅或加热盘连接, 利用内锅或 加热盘受压力的变化产生的位移来形成电容变化值。 将位移转换为电容 值来检测锅内的压力, 无需象压力传感器或温度传感器设置于内锅中。 检测可靠, 利于提取信号。 并且不会受到内锅中烹饪食物的干扰。 ( 4 )本发明在电容传感器的基础上设置了补偿电容, 补偿电容可以 实时感应由于温度、 电磁干扰等因素产生的电容变化, 通过电路处理计 算, 可以补偿修正电容传感器的测量值, 使通过处理计算的测量值更准 确的反映位移的变化, 受环境因素的影响更少, 提高了压力控制的准确 性和稳定性。 (3) The electrode plate of the capacitive sensor of the present invention is connected to the inner pot or the heating plate, and the displacement of the inner pot or the heating plate is changed by the pressure to form a capacitance change value. The displacement is converted to a capacitance value to detect the pressure in the pot, without the need to place the pressure sensor or temperature sensor in the inner pot. The detection is reliable and is good for extracting signals. And will not be disturbed by cooking food in the inner pot. (4) The present invention sets a compensation capacitor on the basis of the capacitance sensor, and the compensation capacitor can sense the capacitance change due to factors such as temperature and electromagnetic interference in real time, and can compensate the measured value of the corrected capacitance sensor through circuit processing calculation, so that the processing is processed. The calculated measured values more accurately reflect the change of displacement, less affected by environmental factors, and improve the accuracy and stability of pressure control.
( 5 ) 本发明在电容传感器的极板与内锅或加热盘之间设置杠杆装 置, 利用杠杆的放大原理来驱动电容传感器极板间的距离; 或者将电容 传感器的极板设置多层增加极板的面积, 来成倍放大电容值, 提高检测 的灵敏度。  (5) The present invention provides a lever device between the electrode plate of the capacitive sensor and the inner pot or the heating plate, and uses the amplification principle of the lever to drive the distance between the plates of the capacitive sensor; or the multi-layer increasing pole of the electrode plate of the capacitive sensor The area of the board is used to multiply the capacitance value to improve the sensitivity of the detection.
( 6 ) 电容传感器的成本低廉, 结构简单, 易于批量生产。  (6) Capacitive sensors are low in cost, simple in structure, and easy to mass produce.
( 7 )本发明的电容传感器的极板与加热盘采用螺杆连接, 可以通过 调节螺杆来控制极板间的距离实现电容传感器极板间距离的微调。 提高 电容传感器的灵敏度和精度。  (7) The electrode plate of the capacitance sensor of the present invention is connected to the heating plate by a screw, and the distance between the plates can be finely adjusted by adjusting the screw to control the distance between the plates. Improve the sensitivity and accuracy of capacitive sensors.
附图说明 DRAWINGS
图 1为本发明第一实施例的整体剖示图;示出弹性板驱动电容传感器 极板改变极板间距离, 电容传感器与补偿电容为复合形式的技术方案; 图 2、 图 3分别为本发明第二实施例的两个整体剖示图, 分别示出两 种实现结构; 示出加热装置驱动电容传感器极板改变极板间距离, 电容 传感器和补偿电容设于支架上, 电容传感器与补偿电容为复合形式的技 术方案; 图 4为本发明第三实施例的整体剖示图;示出加热装置驱动电容传感 器极板改变极板间距离, 电容传感器与补偿电容单独设置的技术方案; 图 5为本发明第四实施例的整体剖示图;示出加热装置通过杠杆机构 驱动电容传感器极板改变极板间距离, 电容传感器与补偿电容为复合形 式的技术方案; 1 is a cross-sectional view of the first embodiment of the present invention; the elastic plate drives the capacitive sensor plate to change the distance between the plates, and the capacitive sensor and the compensation capacitor are combined in a technical form; FIG. 2 and FIG. 3 are respectively Two overall cross-sectional views of the second embodiment of the invention respectively show two implementation structures; the heating device drives the capacitive sensor plate to change the distance between the plates, the capacitance sensor and the compensation capacitor are disposed on the bracket, and the capacitive sensor and the compensation Capacitor is a technical solution in a composite form; 4 is an overall cross-sectional view showing a third embodiment of the present invention; FIG. 5 is a fourth embodiment of the present invention, showing a method in which a heating device drives a capacitive sensor plate to change a distance between the plates, and a capacitance sensor and a compensation capacitor are separately provided; The overall cross-sectional view shows that the heating device drives the capacitive sensor plate through the lever mechanism to change the distance between the plates, and the capacitive sensor and the compensation capacitor are combined in a technical form;
图 6、 图 7分别为本发明第五实施例的两个整体剖示图, 分别示出两 种实现结构; 示出加热装置驱动电容传感器极板改变极板间面积, 电容 传感器与补偿电容为复合形式的技术方案;  6 and FIG. 7 are respectively two overall cross-sectional views of a fifth embodiment of the present invention, showing two implementation structures respectively; showing that the heating device drives the capacitive sensor plate to change the area between the plates, and the capacitance sensor and the compensation capacitor are Compound form of technical solution;
图 8为本发明第六实施例的整体剖示图;示出加热装置通过杠杆机构 来驱动电容传感器极板改变极板间面积, 电容传感器与补偿电容为复合 形式的技术方案;  8 is a cross-sectional view of the sixth embodiment of the present invention; the heating device is driven by a lever mechanism to drive the capacitive sensor plate to change the area between the plates, and the capacitive sensor and the compensation capacitor are combined in a technical form;
图 9为本发明第七实施例的整体剖示图;示出加热装置通过上下位移 来改变电容传感器两个极板间形成的电场介质的技术方案;  9 is an overall cross-sectional view showing a seventh embodiment of the present invention; and showing a technical solution for changing an electric field medium formed between two plates of a capacitance sensor by up-and-down displacement of the heating device;
图 10为本发明电容传感器采用多组形式的结构剖示图;  Figure 10 is a cross-sectional view showing the structure of the capacitive sensor of the present invention in multiple sets;
图 11为本发明锅盖的仰视图;  Figure 11 is a bottom plan view of the lid of the present invention;
图 12为图 11的 A-A剖示图, 示出限压阀的结构;  Figure 12 is a cross-sectional view taken along line A-A of Figure 11, showing the structure of the pressure limiting valve;
图 13为本发明控制电路的电路方框图 ·'  Figure 13 is a circuit block diagram of the control circuit of the present invention.
图 14为图 13的具体电路图; 具体实施方式  Figure 14 is a specific circuit diagram of Figure 13;
下面结合附图对本发明做进一歩的详述:  The present invention will be further described in detail below with reference to the accompanying drawings:
图中部件名称对应的标号如下: 外锅 1、 内锅 2、 密封装置 3、 电加热装置 4、 弹性元件 5、 安全装置 6、 控制电路板 7、 电容传感器 8、 第一极板 81、 第二极板 82、 补偿电容 9、 第 一极板 91、 第二极板 92、 位移传递件 10、 弹性体 11、 支架 12、 杠杆装置 13、 位移导杆 14、 锅盖 15、 把手 16、 外壳 17、 压縮弹簧 18 The label corresponding to the part name in the figure is as follows: Outer pot 1, inner pot 2, sealing device 3, electric heating device 4, elastic member 5, safety device 6, control circuit board 7, capacitive sensor 8, first plate 81, second plate 82, compensation capacitor 9, First plate 91, second plate 92, displacement transmitting member 10, elastic body 11, bracket 12, lever device 13, displacement guide 14, cover 15, handle 16, housing 17, compression spring 18
如图 1至图 14所示, 为本发明提供的一种电压力锅, 包括外锅 1、 放 置于外锅 1中的内锅 2、 封闭内锅 2的密封装置 3、 与内锅 2相配合用于加热 内锅 2的电加热装置 4、 在电加热装置 4和外锅 1之间设置使内锅 2复位的弹 性元件 5、 安全装置 6, 以及控制电加热装置 4工作的控制电路。 控制电路 包括电容传感器 8, 信号处理电路 71和信号控制输出电路 72。  As shown in FIG. 1 to FIG. 14 , an electric pressure cooker provided by the present invention includes an outer pot 1, an inner pot 2 placed in the outer pot 1, a sealing device 3 for closing the inner pot 2, and a matching inner pot 2. An electric heating device 4 for heating the inner pot 2, an elastic member 5 for resetting the inner pot 2, a safety device 6, and a control circuit for controlling the operation of the electric heating device 4 are provided between the electric heating device 4 and the outer pot 1. The control circuit includes a capacitance sensor 8, a signal processing circuit 71, and a signal control output circuit 72.
电容传感器 8包括第一极板 81、第二极板 82。第一极板 81和第二极板 82上分别设有信号采集端。 信号采集端与信号处理电路 71的信号接收端 连接。 电容传感器 8与电压力锅相配合, 感应电压力锅受压力变化产生的 位移变化, 并将该位移变化转换为电容量的变化信号输入至信号处理电 路 71。 信号处理电路 71的信号输出端与信号控制输出电路 72的信号接收 端连接, 信号处理电路 71将接收到的电容量信号进行处理, 并将处理后 的信号输出至信号控制输出电路 72。 信号控制输出电路 72根据接收到的 处理信号来控制电路, 以此控制电加热装置 4的工作。  The capacitive sensor 8 includes a first plate 81 and a second plate 82. A signal acquisition end is disposed on each of the first plate 81 and the second plate 82. The signal collecting end is connected to the signal receiving end of the signal processing circuit 71. The capacitance sensor 8 cooperates with the electric pressure cooker to inductively change the displacement of the electric pressure cooker by the pressure change, and inputs the change signal of the displacement change into the capacitance to the signal processing circuit 71. The signal output terminal of the signal processing circuit 71 is connected to the signal receiving terminal of the signal control output circuit 72, and the signal processing circuit 71 processes the received capacitance signal and outputs the processed signal to the signal control output circuit 72. The signal control output circuit 72 controls the circuit in accordance with the received processing signal, thereby controlling the operation of the electric heating device 4.
在本发明中, 控制电路还包括受温度和电磁干扰时电容值与电容传 感器 8的电容值同时发生、 同时变化的补偿电容 9。 补偿电容 9包括二个极 板, 其中一个极板为电容传感器的第一极板 81或第二极板 82。 本发明在 电容传感器 8的基础上设置了补偿电容 9, 补偿电容 9可以实时感应由于温 度、 电磁干扰等因素产生的电容变化, 通过电路处理计算, 可以补偿修 正电容传感器 8的测量值, 使通过处理计算的测量值更准确的反映位移的 变化, 受环境因素的影响更少, 提高了压力控制的准确性和稳定性。 In the present invention, the control circuit further includes a compensation capacitor 9 that simultaneously and simultaneously changes the capacitance value of the capacitance sensor 8 when subjected to temperature and electromagnetic interference. The compensation capacitor 9 comprises two plates, one of which is the first plate 81 or the second plate 82 of the capacitive sensor. The invention provides a compensation capacitor 9 on the basis of the capacitive sensor 8. The compensation capacitor 9 can sense the capacitance change caused by factors such as temperature and electromagnetic interference in real time, and can be compensated for by the circuit processing calculation. The measured value of the positive capacitive sensor 8 makes the measured value calculated by the processing more accurately reflect the change of the displacement, is less affected by environmental factors, and improves the accuracy and stability of the pressure control.
电容传感器 8的第一极板 81与第二极板 82相对应。 内锅 2受压力变化 产生位移变化, 并由此直接或间接的带动第一极板 81相对于第二极板 82 相向或背向移动, 减少或增加与第二极板 82之间的距离, 以此产生变化 的电容量信号。 电加热装置 4与第一极板 81之间设置一位移传递件 10, 内 锅 2受压力变化产生位移变化,带动电加热装置 4移动, 电加热装置 4通过 位移传递件 10带动第一极板 81移动。  The first plate 81 of the capacitive sensor 8 corresponds to the second plate 82. The inner pot 2 is displaced by the pressure change, and thereby directly or indirectly drives the first plate 81 to move toward or away from the second plate 82, reducing or increasing the distance from the second plate 82. This produces a varying capacitance signal. A displacement transmitting member 10 is disposed between the electric heating device 4 and the first plate 81. The inner pot 2 is displaced by a pressure change to drive the electric heating device 4 to move, and the electric heating device 4 drives the first plate through the displacement transmitting member 10. 81 moves.
对于内锅 2受压力变化产生位移变化,来直接带动第一极板 81相对于 第二极板 82相向或背向移动的方案来说, 要在第一极板 81上设置一顶杆, 顶杆穿透加热装置 4直接与内锅 2锅底接触, 在内锅 2受压力上下移动的时 候通过顶杆来带动第一极板 81上下移动。 这种结构在实际的生产、 制造 中, 实现比较困难。 在实际的产品中也很少有采用这种结构的电压力锅。 故本发明仅在这里用文字描述该方案在理论上的可实施性, 但由于在实 际生产中并不具有实际意义, 故不另外提供附图进行说明。  For the scheme that the inner pot 2 is displaced by the pressure change to directly drive the first plate 81 to move toward or away from the second plate 82, a ejector pin is arranged on the first plate 81. The rod penetration heating device 4 directly contacts the bottom of the inner pot 2, and the first electrode plate 81 is moved up and down by the ejector pin when the inner pot 2 is moved up and down by the pressure. This kind of structure is difficult to implement in actual production and manufacturing. There are few electric pressure cookers using this structure in actual products. Therefore, the present invention only describes the theoretical feasibility of the scheme here by text, but since it does not have practical significance in actual production, the drawings are not separately provided for explanation.
在本发明提供的各个实施例中, 电加热装置 4为铸铝加热盘, 也可为 电磁线圈组件, 密封装置 3为 "人"字型密封圈, 安全装置 6包括如图 5、 图 6中所示的限压阀或等同作用的结构。 本发明所述的安全装置 6起到的 作用是当电压力锅工作, 锅内压力达到危险压力值时, 通过断电、 泄气 等方式来卸掉锅内压力防止爆锅危险。 锅盖 15的外圈通过锅牙卡扣结构 与外锅 1扣合, 内圈通过人字型密封圈与内锅 2相压合, 密封内锅 2。 本发明专利涉及到的锅盖 15与内锅 2和外锅 1之间的配合除了上述所 说的 "旋合式" 以外, 也可是 "翻盖式"结构。 In the various embodiments provided by the present invention, the electric heating device 4 is a cast aluminum heating plate, and may also be an electromagnetic coil assembly. The sealing device 3 is a "human" shaped sealing ring, and the safety device 6 includes as shown in FIG. 5 and FIG. The pressure limiting valve shown or equivalent structure. The safety device 6 of the present invention plays the role of preventing the danger of the explosion pot when the pressure in the pot reaches a dangerous pressure value by discharging the electric pressure in the pot. The outer ring of the lid 15 is fastened to the outer pot 1 by the snap fastening structure, and the inner ring is pressed with the inner pot 2 through the herringbone seal ring to seal the inner pot 2. The cooperation between the lid 15 and the inner pot 2 and the outer pot 1 relating to the patent of the present invention may be a "flip type" structure in addition to the above-mentioned "spin type".
在本发明提供的第一实施例中, 如图 1所示, 内锅 2与加热盘 4紧密贴 合, 在加热盘 4的下方安装一弹性板, 该弹性板即为弹性元件 5。 弹性板 5 的两端固定于外锅 1的侧壁上。 在外锅 1与外壳 17之间、 外壳 17的底部设 有电容传感器 8和补偿电容 9, 在本方案中, 电容传感器 8与补偿电容 9为 复合形式, 电容传感器 8的第二极板 82与补偿电容 9的第二极板 92同为一 个极板。 电容传感器 8的第一极板 81通过位移传递件 10与弹性板 5连接。 在本实施例中, 位移传递件 10为连接杆。 内锅 2受压力上下移动, 由与其 紧密贴合的加热盘 4驱动弹性板 5向下移动, 弹性板 5将上下的位移通过位 移传递件 10传递给第一极板 81, 带动第一极板 81相对第二极板 82移动, 从而产生电容变化值, 输入至控制电路板 7。  In the first embodiment provided by the present invention, as shown in Fig. 1, the inner pot 2 is in close contact with the heating plate 4, and an elastic plate is mounted below the heating plate 4, which is the elastic member 5. Both ends of the elastic plate 5 are fixed to the side walls of the outer pot 1. A capacitance sensor 8 and a compensation capacitor 9 are disposed between the outer pot 1 and the outer casing 17 and at the bottom of the outer casing 17. In the present embodiment, the capacitive sensor 8 and the compensation capacitor 9 are combined, and the second plate 82 of the capacitive sensor 8 is compensated. The second plate 92 of the capacitor 9 is also a plate. The first plate 81 of the capacitive sensor 8 is connected to the elastic plate 5 via the displacement transmitting member 10. In the present embodiment, the displacement transmitting member 10 is a connecting rod. The inner pot 2 is moved up and down by the pressure, and the elastic plate 5 is driven to move downward by the heating plate 4 closely attached thereto, and the elastic plate 5 transmits the upper and lower displacements to the first plate 81 through the displacement transmitting member 10, and drives the first plate. The 81 is moved relative to the second plate 82 to generate a capacitance change value, which is input to the control circuit board 7.
在本发明提供的第二实施例中, 位移传递件 10为一螺杆, 电加热装 置 4和 /或第一极板 81上设有与螺杆相对应的螺纹孔, 第一极板 81通过螺 杆与电加热装置 4相螺纹连接。  In the second embodiment provided by the present invention, the displacement transmitting member 10 is a screw, and the electric heating device 4 and/or the first electrode plate 81 are provided with screw holes corresponding to the screw, and the first plate 81 is screwed through The electric heating device 4 is screwed.
如图 2所示, 为实现本发明第二实施例的一个结构图。 弹性元件 5为 固定于外锅 1与内锅 2之间的 U形弹片。 电容传感器 8与补偿电容 9为复合形 式, 制成一整体件, 安装于壳体内。 壳体上设有螺纹杆, 与设置于外锅 1 的侧壁上的支架 12螺纹连接。 所谓复合形式, 是指电容传感器 8的第二极 板 82与补偿电容 9的第二极板 92同为一个极板, 补偿电容 9的第二极板 92 与第一极板 91是固定的, 相互之间不发生间距上的变化。 第一极板 81与 位移传递件 10 (即螺杆)的一端固定连接, 另一端与加热盘 4相螺纹连接。 加热盘 4受内锅 2的上下移动通过位移传递件 10带动第一极板 81相对于第 二极板 82移动, 以此产生电容变化值, 输入至控制电路。 补偿电路 9用于 补偿电容传感器受温度、 电磁干扰产生的电容值信号的偏差。 As shown in Fig. 2, a block diagram of a second embodiment of the present invention is implemented. The elastic member 5 is a U-shaped elastic piece fixed between the outer pot 1 and the inner pot 2. The capacitive sensor 8 and the compensation capacitor 9 are in a composite form, and are formed into a single piece and mounted in the housing. A threaded rod is provided on the casing to be screwed to the bracket 12 provided on the side wall of the outer pot 1. The composite form means that the second plate 82 of the capacitive sensor 8 and the second plate 92 of the compensation capacitor 9 are the same as one plate, and the second plate 92 of the compensation capacitor 9 is fixed to the first plate 91. There is no change in spacing between each other. The first plate 81 is fixedly coupled to one end of the displacement transmitting member 10 (i.e., the screw), and the other end is screwed to the heating plate 4. The heating plate 4 is moved by the up-and-down movement of the inner pot 2 through the displacement transmitting member 10 to move the first electrode plate 81 relative to the second electrode plate 82, thereby generating a capacitance change value, which is input to the control circuit. The compensation circuit 9 is used to compensate for the deviation of the capacitance sensor from the capacitance value signal generated by temperature and electromagnetic interference.
在本实施例中, 第一极板 81与位移传递件 10连接, 位移传递件 10的 一端由于是与加热盘 4螺纹连接, 在实际使用中, 可以通过旋转位移传递 件 10 (即螺杆) 控制伸入螺纹孔的深度来微量的调整第一极板 81与第二 极板 82间的初始距离, 提高检测的精度。 灵活性, 应变性更好。  In the present embodiment, the first plate 81 is coupled to the displacement transmitting member 10, and one end of the displacement transmitting member 10 is screwed to the heating plate 4, and in actual use, can be controlled by the rotary displacement transmitting member 10 (ie, the screw) The depth of the threaded hole is extended to slightly adjust the initial distance between the first plate 81 and the second plate 82 to improve the accuracy of the detection. Flexibility and better responsiveness.
如图 3所示, 为实现本发明第二实施例的另一个结构图。 将图 2中相 复合的电容传感器 8与补偿电容 9颠倒 180度。此时位移传递件 10可以视为 安装相复合的电容传感器与补偿电容的壳体。而连接支架 12则通过图 2中 的设于极板上的螺杆来实现。 此时, 位于壳体内上部的两个与壳体固定 的极板分别为补偿电容 9的第一极板 91和电容传感器 8的第一极板 81, 而 且, 第一极板 81还与补偿电容 9的第二极板 92为同一极板。 位于壳体下部 的可活动的极板为电容传感器 8的第二极板 82。  As shown in Fig. 3, another structural diagram for realizing the second embodiment of the present invention. Reverse the composite capacitive sensor 8 and compensation capacitor 9 in Figure 2 by 180 degrees. At this time, the displacement transmitting member 10 can be regarded as a housing in which the phase composite capacitor and the compensation capacitor are mounted. The connecting bracket 12 is realized by the screw provided on the electrode plate in Fig. 2. At this time, the two plates fixed to the upper portion of the housing are respectively the first plate 91 of the compensation capacitor 9 and the first plate 81 of the capacitance sensor 8, and the first plate 81 and the compensation capacitor are also provided. The second plates 92 of 9 are the same plate. The movable plate located at the lower portion of the housing is the second plate 82 of the capacitive sensor 8.
在加热盘 4带动相复合的电容传感器 8和补偿电容 9的壳体上下移动 时, 补偿电容 9的第一极板 91和第二极板 92同时上下移动, 则相互之间是 不移动的, 而与补偿电容 9的第二极板 92共用一个极板的电容传感器 8的 第一极板 81相对与第二极板 82确是移动的, 改变了它们之间的间距, 产 生电容变化值。 在该方案中, 优点主要在于螺纹微调的位置改在了外锅 支架上, 可操作空间增大, 对于人员的调节更方便。 位移传递件 10为一顶杆, 在第一极板 81与第二极板 82之间设有可驱 动第一极板 81移动的弹性体 11, 顶杆的一端连接于电加热装置 4的底部或 第一极板 81, 另一端贴于第一极板 81或电加热装置 4的底部。 When the heating plate 4 drives the housing of the composite capacitive sensor 8 and the compensation capacitor 9 to move up and down, the first plate 91 and the second plate 92 of the compensation capacitor 9 move up and down at the same time, and do not move with each other. The first plate 81 of the capacitive sensor 8 sharing a plate with the second plate 92 of the compensation capacitor 9 is moved relative to the second plate 82, changing the spacing between them to produce a capacitance change value. In this solution, the advantage is mainly that the position of the thread fine adjustment is changed on the outer pot bracket, the operable space is increased, and the adjustment of the personnel is more convenient. The displacement transmitting member 10 is a jack. An elastic body 11 for driving the movement of the first plate 81 is disposed between the first plate 81 and the second plate 82. One end of the jack is connected to the bottom of the electric heating device 4. Or the first plate 81 and the other end is attached to the bottom of the first plate 81 or the electric heating device 4.
在本发明中, 电容传感器 8和补偿电容 9即可通过 L形支架 12固定于外 锅 1的侧壁上, 也可通过 U形支架固定于外锅 1的底部。  In the present invention, the capacitance sensor 8 and the compensation capacitor 9 may be fixed to the side wall of the outer pot 1 via the L-shaped bracket 12, or may be fixed to the bottom of the outer pot 1 by a U-shaped bracket.
在本发明提供的第三实施例中, 如图 4所示, 补偿电容 9为单独设置 的。 安装于外锅 1的支架 12上。 弹性体 11为 S形弹片, 弹性体 11位于第一 极板 81与第二极板 82之间。顶杆 10的一端与电容传感器 8中的第一极板 81 连接, 另一端与加热盘 4的底部贴合。 在工作时, 加热盘 4向下移动, 带 动与其贴合的顶杆 10向下移动, 顶杆 10进而带动第一极板 81向下移动, 向下移动的第一极板 81挤压 S形弹片 11, 当加热盘 4向上移动时, 受挤压 的 S形弹片 11弹力复位, 并向上顶靠第一极板 81, 第一极板 81带动顶杆 10 继续保持与加热盘 4底部的贴合, 从而完成上下移动。 并产生电容变化值 信号, 输入至控制电路板 7,单独设置的补偿电容 9补偿电容传感器 8受温 度、 电磁干扰时出现的电容值的偏差。  In the third embodiment provided by the present invention, as shown in Fig. 4, the compensation capacitors 9 are separately provided. It is mounted on the bracket 12 of the outer pot 1. The elastic body 11 is an S-shaped elastic piece, and the elastic body 11 is located between the first electrode plate 81 and the second electrode plate 82. One end of the jack 10 is connected to the first plate 81 of the capacitance sensor 8, and the other end is fitted to the bottom of the heating plate 4. In operation, the heating plate 4 moves downward to drive the ejector pin 10 that is attached thereto to move downward, the ram 10 further drives the first plate 81 to move downward, and the downwardly moving first plate 81 presses the S shape. The elastic piece 11, when the heating plate 4 moves upward, the pressed S-shaped elastic piece 11 is elastically reset and abuts against the first electrode plate 81, and the first electrode plate 81 drives the ejector pin 10 to continue to adhere to the bottom of the heating plate 4. Close, thus completing the up and down movement. And a capacitance change value signal is generated, which is input to the control circuit board 7, and the compensation capacitor 9 which is separately provided compensates for the deviation of the capacitance value which occurs when the capacitance sensor 8 is subjected to temperature and electromagnetic interference.
在该方案中, 补偿电容 9是单独设置在电压力锅内的。 当然, 在本发 明给出的其他方案中, 补偿电容 9也可单独设置, 与电容传感器 8相独立。  In this scheme, the compensation capacitor 9 is separately provided in the electric pressure cooker. Of course, in other solutions given by the present invention, the compensation capacitor 9 can also be provided separately from the capacitive sensor 8.
在本发明提供的第四实施中, 如图 5所示, 电容传感器 8与补偿电容 9 为复合形式, 并安装于外锅 1侧壁的支架 12上, 位移传递件 10与第一极板 81之间设置一杠杆装置 13, 位移传递件 10的一端与加热盘 4的底部连接, 另一端与杠杆装置 13的短臂端铰接, 杠杆装置 13的长臂端与第一极板 81 铰接。 当加热盘 4上下移动时, 位移传递件 10带动杠杆装置 13的短壁端转 动, 短壁端通过杠杆带动长臂端转动, 长臂端进而带动第一极板 81上下 移动。 利用杠杆的放大原理来驱动电容传感器极板间的距离; 成倍放大 电容值, 提高检测的灵敏度。 In the fourth implementation provided by the present invention, as shown in FIG. 5, the capacitive sensor 8 and the compensation capacitor 9 are combined and mounted on the bracket 12 of the side wall of the outer pot 1, the displacement transmitting member 10 and the first plate 81. A lever device 13 is disposed therebetween, one end of the displacement transmitting member 10 is coupled to the bottom of the heating plate 4, and the other end is hinged to the short arm end of the lever device 13, and the long arm end of the lever device 13 is hinged to the first plate 81. When the heating plate 4 moves up and down, the displacement transmitting member 10 drives the short wall end of the lever device 13 The short wall end drives the long arm end to rotate by the lever, and the long arm end further drives the first plate 81 to move up and down. The magnification principle of the lever is used to drive the distance between the plates of the capacitive sensor; the capacitance value is doubled to increase the sensitivity of the detection.
该方案利用了杠杆原理来成倍放大位移量。 当然, 如图 10中所示的 结构, 也可将电容传感器的极板设置为多层, 多组结构, 以增加极板间 的面积, 同样能实现成倍放大电容值, 提高检测的灵敏度。  This solution utilizes the principle of leverage to multiply the amount of displacement. Of course, as shown in the structure shown in FIG. 10, the plates of the capacitive sensor can also be arranged in multiple layers and multiple sets of structures to increase the area between the plates, and the capacitance value can be doubled, and the sensitivity of detection can be improved.
在本发明提供的第五实施例中, 第一极板 81与第二极板 82相对应, 内锅 2受压力变化产生位移变化, 并由此直接或间接的带动第一极板 81和 /或第二极板 82运动, 改变第一极板 81与第二极板 82之间的有效对应面 积, 以此产生变化的电容量信号。  In the fifth embodiment provided by the present invention, the first plate 81 corresponds to the second plate 82, and the inner pot 2 is displaced by the pressure change, thereby directly or indirectly driving the first plate 81 and/or Or the second plate 82 moves to change the effective corresponding area between the first plate 81 and the second plate 82, thereby generating a varying capacitance signal.
如图 6所示, 为实现本发明第五实施例的一个结构图。 电容传感器 8 与补偿电容 9为复合形式, 并安装于外锅 1侧壁的支架 12上。 电容传感器 8 与补偿电容 9的各个极板与加热盘之间相互垂直。 加热盘 4与第一极板 81 之间设置一位移导杆 14, 位移导杆 14的两端分别与加热盘 4和第一极板 81 相连接, 内锅 2受压力变化产生位移变化,带动加热盘 4移动, 加热盘 4通 过位移导杆 14带动第一极板 81上下移动, 改变第一极板 81相对于第二极 板 82的有限对应面接,以此产生电容变化值信号,并输入至控制电路板 7。  As shown in Fig. 6, a block diagram of a fifth embodiment of the present invention is implemented. The capacitive sensor 8 and the compensation capacitor 9 are combined and mounted on the bracket 12 of the side wall of the outer pot 1. The capacitive sensor 8 and the respective plates of the compensation capacitor 9 are perpendicular to each other between the heating plates. A displacement guide 14 is disposed between the heating plate 4 and the first plate 81. The two ends of the displacement guide 14 are respectively connected to the heating plate 4 and the first plate 81, and the inner pot 2 is displaced by the pressure change, and is driven. The heating plate 4 moves, and the heating plate 4 drives the first plate 81 to move up and down by the displacement guiding rod 14 to change the limited corresponding surface of the first plate 81 relative to the second plate 82, thereby generating a capacitance change value signal and inputting To control circuit board 7.
如图 7所示, 为另一实现本发明第五实施例的结构图。 在结构图中, 位移导杆 14的一端与加热盘 4底部螺纹连接, 另一端贴合于电容传感器 8 的第一极板 81的侧壁上, 第一极板 81的另一侧壁上抵靠一压縮弹簧 18, 压縮弹簧 18的另一端固定于相复合的电容传感器 8与补偿电容 9的壳体 内。 当加热盘 4向下移动时, 带动位移导杆 14下压与其相贴合的第一极板 81, 带动第一极板 81向下移动, 压縮压縮弹簧 18, 当加热盘 4复位向上移 动时, 压縮弹簧 18复位, 向上顶靠第一极板 81, 使第一极板 81继续与移 位导杆 14相贴合, 从而完成上下移动。 以此产生电容变化值信号, 并输 入至控制电路板 7中。 As shown in Fig. 7, it is another structural diagram for realizing the fifth embodiment of the present invention. In the structural view, one end of the displacement guide 14 is screwed to the bottom of the heating plate 4, and the other end is attached to the side wall of the first plate 81 of the capacitive sensor 8, and the other side wall of the first plate 81 is abutted. The other end of the compression spring 18 is fixed to the housing of the composite capacitive sensor 8 and the compensation capacitor 9 by a compression spring 18. When the heating plate 4 moves downward, the displacement guide 14 is driven to press down the first plate that is in contact with the heating plate 4 81, driving the first plate 81 to move downward, compressing the compression spring 18, when the heating plate 4 is reset and moving upward, the compression spring 18 is reset, and is pressed upward against the first plate 81, so that the first plate 81 continues It is attached to the shift guide 14 to complete the up and down movement. Thereby, a capacitance change value signal is generated and input to the control circuit board 7.
在本发明给出的第六实施例中, 如图 8所示, 位移导杆 14与第一极板 81之间设置一杠杆装置 13, 位移导杆 14的一端与加热盘 4的底部连接, 另 一端与杠杆装置 13的短臂端铰接, 杠杆装置 13的长臂端与第一极板 81铰 接。 当加热盘 4上下移动时, 位移导杆 14带动杠杆装置 13的短壁端转动, 短壁端通过杠杆带动长臂端转动, 长臂端进而带动第一极板 81上下移动。 利用杠杆的放大原理来驱动电容传感器极板间的有效相对面积; 成倍放 大电容值, 提高检测的灵敏度。  In the sixth embodiment of the present invention, as shown in FIG. 8, a lever device 13 is disposed between the displacement guide 14 and the first plate 81, and one end of the displacement guide 14 is connected to the bottom of the heating plate 4. The other end is hinged to the short arm end of the lever unit 13, and the long arm end of the lever unit 13 is hinged to the first plate 81. When the heating plate 4 moves up and down, the displacement guide 14 drives the short wall end of the lever device 13 to rotate, and the short wall end drives the long arm end to rotate by the lever, and the long arm end further drives the first plate 81 to move up and down. The principle of amplification of the lever is used to drive the effective relative area between the plates of the capacitive sensor; multiplying the capacitance value to increase the sensitivity of the detection.
在本发明提供的第七实施例中, 如图 9所示, 在加热盘 4与外锅 1底部 之间设置第一极板 81与第二极板 82, 第一极板 81与第二极板 82位于同一 平面上,分别与加热盘 4相对应,加热盘 4由内锅 2位移的变化而产生移动, 并由此改变第一极板 81与第二极板 82产生的电场介质, 以此产生电容变 化值, 并输入至控制电路板 7。  In the seventh embodiment provided by the present invention, as shown in FIG. 9, a first plate 81 and a second plate 82 are disposed between the heating plate 4 and the bottom of the outer pot 1, the first plate 81 and the second pole. The plates 82 are located on the same plane, respectively corresponding to the heating plate 4, and the heating plate 4 is moved by the change of the displacement of the inner pot 2, thereby changing the electric field medium generated by the first plate 81 and the second plate 82, This produces a capacitance change value and is input to the control circuit board 7.
在本发明给出的各个实施例中的控制电路板 7, 如图 13、 图 14所示, 控制电路板 7的控制电路包括信号处理电路 71, 信号控制输出电路 72。 信 号处理电路 71包括振荡电路 711和微处理器 712。 信号控制输出电路 72为 继电器控制电路或可控硅电路。  In the various embodiments of the present invention, the control circuit board 7, as shown in Figs. 13 and 14, the control circuit of the control circuit board 7 includes a signal processing circuit 71 and a signal control output circuit 72. The signal processing circuit 71 includes an oscillation circuit 711 and a microprocessor 712. The signal control output circuit 72 is a relay control circuit or a thyristor circuit.
电容传感器 8和补偿电容 9将采集的电容值信号输入至信号处理电路 71的振荡电路 711中, 输出一定频率的振荡信号至微处理器 712中, 该振 荡信号在微处理器 712中经过自适应算法调整后形成传感器的输出控制 信号输出至继电器控制电路板 72, 继电器控制电路板 72根据接收到的信 号控制加热盘工作。 在电压力锅工作时, 控制电路板 7持续进行检测, 进 一歩控制电压力锅的工作, 构成闭环控制系统。 The capacitance sensor 8 and the compensation capacitor 9 input the collected capacitance value signal into the oscillation circuit 711 of the signal processing circuit 71, and output an oscillation signal of a certain frequency to the microprocessor 712. The output signal of the sway signal, which is adjusted by the adaptive algorithm in the microprocessor 712, is output to the relay control circuit board 72, and the relay control circuit board 72 controls the operation of the heating disk based on the received signal. When the electric pressure cooker is working, the control circuit board 7 continues to detect and further controls the operation of the electric pressure cooker to form a closed loop control system.
当信号控制输出电路 712采用可控硅电路时,则根据输入的信号来调 整可控硅的导通角, 由可控硅来实现调压和输出功率的调节, 以控制加 热盘 4的加热功率逐渐减少直至断开电路或闭合电路逐渐增加加热盘 4的 加热功率。  When the signal control output circuit 712 adopts the thyristor circuit, the conduction angle of the thyristor is adjusted according to the input signal, and the voltage regulation and the output power are adjusted by the thyristor to control the heating power of the heating plate 4. Gradually decreasing until the opening circuit or the closing circuit gradually increases the heating power of the heating plate 4.

Claims

权 利 要 求 书 Claims
1、 一种电压力锅, 包括外锅 (1) 、 放置于所述外锅 (1) 中的 内锅 (2) 、 封闭内锅 (2) 的密封装置 (3) 、 与所述内锅 (2) 相配 合用于加热所述内锅(2)的电加热装置(4)、在所述电加热装置(4) 和外锅 (1) 之间设置使内锅 (2) 复位的弹性元件 (5) 、 安全装置 (6), 以及控制所述电加热装置(4)工作的控制电路, 其特征在于: 所述控制电路包括电容传感器 (8) , 信号处理电路 (71) 和信 号控制输出电路 (72) ; 1. An electric pressure cooker comprising an outer pot (1), an inner pot (2) placed in the outer pot (1), a sealing device (3) for closing the inner pot (2), and the inner pot ( 2) cooperating with an electric heating device (4) for heating the inner pot (2), and an elastic member for resetting the inner pot (2) between the electric heating device (4) and the outer pot (1) (5), a safety device (6), and a control circuit for controlling operation of the electric heating device (4), characterized in that: the control circuit comprises a capacitance sensor (8), a signal processing circuit (71) and a signal control output Circuit (72) ;
所述电容传感器 (8) 包括第一极板 (81) 、 第二极板 (82) , 所述第一极板(81)和第二极板(82)上分别设有信号采集端; 所述 信号采集端与所述信号处理电路(71) 的信号接收端连接; 所述电容 传感器 (8) 与所述电压力锅相配合, 感应电压力锅受压力变化产生 的位移变化,并将该位移变化转换为电容量的变化信号输入至所述信 号处理电路 (71) ;  The capacitive sensor (8) includes a first plate (81) and a second plate (82), and the first plate (81) and the second plate (82) are respectively provided with signal collecting ends; The signal collecting end is connected to the signal receiving end of the signal processing circuit (71); the capacitive sensor (8) cooperates with the electric pressure cooker to induce a displacement change of the electric pressure cooker under pressure change, and the displacement is changed. a change signal converted into a capacitance is input to the signal processing circuit (71);
所述信号处理电路(71)的信号输出端与所述信号控制输出电路 (72) 的信号接收端连接, 所述信号处理电路(71)将接收到的电容 量信号进行处理, 并将处理后的信号输出至所述信号控制输出电路 (72) ;  a signal output end of the signal processing circuit (71) is connected to a signal receiving end of the signal control output circuit (72), and the signal processing circuit (71) processes the received capacitance signal and processes the signal The signal is output to the signal control output circuit (72);
所述信号控制输出电路(72)根据接收到的所述处理信号来控制 电路, 以此控制所述电加热装置 (4) 的工作。 2、根据权利要求 1所述的一种电压力锅, 其特征在于: 所述控制 电路还包括与电容传感器电容值受温度和电磁干扰同时变化电容值 的补偿电容 (9) 。 The signal control output circuit (72) controls the circuit based on the received processing signal, thereby controlling the operation of the electric heating device (4). 2. An electric pressure cooker according to claim 1, wherein: said control circuit further comprises a compensation capacitor (9) for varying the capacitance value of the capacitance sensor due to temperature and electromagnetic interference.
3、根据权利要求 2所述的一种电压力锅, 其特征在于: 所述补偿 电容 (9) 包括二个极板, 其中一个极板为所述电容传感器的第一极 板 (81) 或第二极板 (82) 。  3. An electric pressure cooker according to claim 2, wherein: said compensation capacitor (9) comprises two plates, one of which is the first plate (81) or the first of said capacitive sensors Two-pole plate (82).
4、根据权利要求 1或 2或 3所述的一种电压力锅, 其特征在于: 所 述第一极板 (81) 与第二极板 (82) 相对应, 所述内锅 (2) 受压力 变化产生位移变化, 并由此直接或间接的带动所述第一极板(81)相 对于所述第二极板(82)相向或背向移动,减少或增加与第二极板(82) 之间的距离, 以此产生变化的电容量信号。  4. An electric pressure cooker according to claim 1 or 2 or 3, wherein: said first plate (81) corresponds to a second plate (82), said inner pot (2) being subjected to The pressure change produces a displacement change, and thereby directly or indirectly drives the first plate (81) to move toward or away from the second plate (82), reducing or increasing with the second plate (82). The distance between them, in order to produce a varying capacitance signal.
5、根据权利要求 4所述的一种电压力锅, 其特征在于: 所述电加 热装置 (4) 与所述第一极板 (81) 之间设置一位移传递件 (10) , 所述内锅 (2) 受压力变化产生位移变化,带动所述电加热装置 (4) 移动, 所述电加热装置 (4) 通过所述位移传递件 (10) 带动第一极 板 (81) 移动。  An electric pressure cooker according to claim 4, wherein: a displacement transmitting member (10) is disposed between the electric heating device (4) and the first plate (81), the inner portion The pot (2) undergoes a displacement change due to a change in pressure, causing the electric heating device (4) to move, and the electric heating device (4) drives the first plate (81) to move by the displacement transmitting member (10).
6、根据权利要求 5所述的一种电压力锅, 其特征在于: 所述位移 传递件 (10) 为一螺杆, 所述电加热装置 (4) 和 /或第一极板 (81) 上设有与所述螺杆相对应的螺纹孔, 所述第一极板(81)通过所述螺 杆与所述电加热装置 (4) 相螺纹连接。  The electric pressure cooker according to claim 5, wherein: the displacement transmitting member (10) is a screw, and the electric heating device (4) and/or the first plate (81) are provided. There is a threaded hole corresponding to the screw, and the first plate (81) is screwed to the electric heating device (4) through the screw.
7、根据权利要求 5所述的一种电压力锅, 其特征在于: 所述位移 传递件(10) 为一顶杆, 在所述第一极板 (81) 与第二极板(82)之 间设有可驱动第一极板(81)移动的弹性体(11) , 所述顶杆的一端 连接于所述电加热装置 (4) 的底部或第一极板 (81) , 另一端贴于 第一极板 (81) 或电加热装置 (4) 的底部。 The electric pressure cooker according to claim 5, wherein: said displacement transmitting member (10) is a jack, and said first plate (81) and said second plate (82) An elastic body (11) for driving the movement of the first plate (81) is provided, one end of the top rod is connected to the bottom of the electric heating device (4) or the first plate (81), and the other end is attached At the bottom of the first plate (81) or the electric heating unit (4).
8、根据权利要求 4所述的一种电压力锅, 其特征在于: 所述第二 极板 (82) 安装于所述外锅 (1) 底部或通过一支架 (12) 安装于所 述外锅 (1) 的侧壁上。  8. An electric pressure cooker according to claim 4, wherein: said second plate (82) is mounted to the bottom of said outer pot (1) or to said outer pot via a bracket (12) On the side wall of (1).
9、根据权利要求 5所述的一种电压力锅, 其特征在于: 所述位移 传递件(10) 与所述第一极板(81)之间设置一杠杆装置 (13) , 所 述位移传递件(10)带动所述杠杆装置(13) 的短臂端, 长臂端带动 所述第一极板 (81) 。  The electric pressure cooker according to claim 5, wherein: a lever device (13) is disposed between the displacement transmitting member (10) and the first plate (81), and the displacement is transmitted. The member (10) drives the short arm end of the lever device (13), and the long arm end drives the first plate (81).
10、 根据权利要求 1或 2或 3所述的一种电压力锅, 其特征在于: 在电加热装置(4) 与外锅 (1)底部之间设置所述第一极板(81) 与 第二极板 (82) , 所述第一极板(81) 与第二极板(82)位于同一平 面上, 分别与所述电加热装置(4) 相对应, 所述电加热装置(4) 由 内锅位移的变化而产生移动, 并由此改变第一极板(81)与第二极板 10. An electric pressure cooker according to claim 1 or 2 or 3, characterized in that: said first plate (81) and said first between the electric heating device (4) and the bottom of the outer pot (1) a second plate (82), the first plate (81) and the second plate (82) are on the same plane, respectively corresponding to the electric heating device (4), the electric heating device (4) Movement caused by a change in displacement of the inner pot, and thereby changing the first plate (81) and the second plate
(82) 产生的电场介质。 (82) The generated electric field medium.
11、 根据权利要求 1或 2或 3所述的一种电压力锅, 其特征在于: 所述第一极板 (81) 与第二极板 (82) 相对应, 所述内锅 (2) 受压 力变化产生位移变化, 并由此直接或间接的带动所述第一极板 (81) 和 /或第二极板 (82) 运动, 改变第一极板 (81) 与第二极板 (82) 之间的有效对应面积, 以此产生变化的电容量信号。 12、根据权利要求 11所述的一种电压力锅, 其特征在于: 所述电 加热装置 (4) 与所述第一极板 (81) 之间设置一位移导杆 (14) , 所述位移导杆(14) 的两端分别与所述电加热装置(4)和 /或第一极 板(81)相连接, 所述内锅(2)受压力变化产生位移变化,带动所述 电加热装置(4)移动, 所述电加热装置(4)通过所述位移导杆(14) 带动第一极板(81)移动, 所述第二极板(82) 安装于所述外锅 (1) 底部或通过一支架 (12) 安装于所述外锅 (1) 的侧壁上。 11. An electric pressure cooker according to claim 1 or 2 or 3, wherein: said first plate (81) corresponds to a second plate (82), said inner pot (2) being subjected to The pressure change produces a displacement change, and thereby directly or indirectly drives the first plate (81) and/or the second plate (82) to move, changing the first plate (81) and the second plate (82). A valid corresponding area between them to produce a varying capacitance signal. An electric pressure cooker according to claim 11, wherein: a displacement guide (14) is disposed between the electric heating device (4) and the first plate (81), the displacement The two ends of the guiding rod (14) are respectively connected with the electric heating device (4) and/or the first electrode plate (81), and the inner pot (2) is subjected to displacement change due to pressure change, and the electric heating is driven. The device (4) moves, the electric heating device (4) drives the first plate (81) to move by the displacement guide (14), and the second plate (82) is mounted to the outer pot (1) The bottom is mounted to the side wall of the outer pot (1) by a bracket (12).
13、根据权利要求 12所述的一种电压力锅, 其特征在于: 所述位 移导杆(14) 与所述第一极板(81)之间设置一杠杆装置 (13) , 所 述位移导杆(14) 带动所述杠杆装置(13) 的短臂端, 长臂端带动所 述的第一极板 (81) 。  The electric pressure cooker according to claim 12, wherein: a lever device (13) is disposed between the displacement guide (14) and the first plate (81), and the displacement guide The rod (14) drives the short arm end of the lever device (13), and the long arm end drives the first plate (81).
PCT/CN2008/001519 2007-09-14 2008-08-22 Electrical pressure cooker WO2009036653A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100469289C (en) * 2007-09-14 2009-03-18 九阳股份有限公司 Electric pressure cooker
CN109106191A (en) * 2017-06-26 2019-01-01 佛山市顺德区美的电热电器制造有限公司 Cooking machine and its control device
DE202018006414U1 (en) 2017-08-09 2020-04-23 Sharkninja Operating Llc Cooking device and components thereof
JP2019037591A (en) * 2017-08-25 2019-03-14 パナソニックIpマネジメント株式会社 Pressure type rice cooker
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CN110313810A (en) * 2018-03-29 2019-10-11 佛山市顺德区美的电热电器制造有限公司 Control equipment, method and pressure cooking appliance for pressure cooking appliance
CN110604466A (en) * 2018-06-14 2019-12-24 佛山市顺德区美的电热电器制造有限公司 Cooking control method and device and computer storage medium
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USD883015S1 (en) 2018-08-09 2020-05-05 Sharkninja Operating Llc Food preparation device and parts thereof

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2820010Y (en) * 2005-08-06 2006-09-27 美的集团有限公司 Electric pressure cooker
CN201005489Y (en) * 2007-03-06 2008-01-16 佛山市富士宝电器科技有限公司 Pressure testing apparatus of the electric pressure cooker
CN101112291A (en) * 2007-09-14 2008-01-30 九阳股份有限公司 Electric pressure cooker
CN101112293A (en) * 2007-09-14 2008-01-30 九阳股份有限公司 Modified electric pressure cooker
CN101112292A (en) * 2007-09-14 2008-01-30 九阳股份有限公司 Improved electric pressure cooker
CN201085465Y (en) * 2007-09-14 2008-07-16 九阳股份有限公司 Improved electric pressure cooker
CN201085466Y (en) * 2007-09-14 2008-07-16 九阳股份有限公司 Modified electric pressure cooker
CN201085464Y (en) * 2007-09-14 2008-07-16 九阳股份有限公司 Electric pressure cooker

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2820010Y (en) * 2005-08-06 2006-09-27 美的集团有限公司 Electric pressure cooker
CN201005489Y (en) * 2007-03-06 2008-01-16 佛山市富士宝电器科技有限公司 Pressure testing apparatus of the electric pressure cooker
CN101112291A (en) * 2007-09-14 2008-01-30 九阳股份有限公司 Electric pressure cooker
CN101112293A (en) * 2007-09-14 2008-01-30 九阳股份有限公司 Modified electric pressure cooker
CN101112292A (en) * 2007-09-14 2008-01-30 九阳股份有限公司 Improved electric pressure cooker
CN201085465Y (en) * 2007-09-14 2008-07-16 九阳股份有限公司 Improved electric pressure cooker
CN201085466Y (en) * 2007-09-14 2008-07-16 九阳股份有限公司 Modified electric pressure cooker
CN201085464Y (en) * 2007-09-14 2008-07-16 九阳股份有限公司 Electric pressure cooker

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