WO2008031253A1 - Bouilloire électrique en verre intelligente - Google Patents

Bouilloire électrique en verre intelligente Download PDF

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Publication number
WO2008031253A1
WO2008031253A1 PCT/CN2006/002069 CN2006002069W WO2008031253A1 WO 2008031253 A1 WO2008031253 A1 WO 2008031253A1 CN 2006002069 W CN2006002069 W CN 2006002069W WO 2008031253 A1 WO2008031253 A1 WO 2008031253A1
Authority
WO
WIPO (PCT)
Prior art keywords
temperature
heating
water temperature
glass
constant temperature
Prior art date
Application number
PCT/CN2006/002069
Other languages
English (en)
Chinese (zh)
Inventor
I Feng Lin
Original Assignee
Mr Technology (Int'l) Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mr Technology (Int'l) Ltd. filed Critical Mr Technology (Int'l) Ltd.
Priority to PCT/CN2006/002069 priority Critical patent/WO2008031253A1/fr
Publication of WO2008031253A1 publication Critical patent/WO2008031253A1/fr

Links

Classifications

    • 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
    • A47J27/21—Water-boiling vessels, e.g. kettles
    • A47J27/21008—Water-boiling vessels, e.g. kettles electrically heated
    • A47J27/2105—Water-boiling vessels, e.g. kettles electrically heated of the cordless type, i.e. whereby the water vessel can be plugged into an electrically-powered base element
    • 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
    • A47J27/21—Water-boiling vessels, e.g. kettles
    • A47J27/21008—Water-boiling vessels, e.g. kettles electrically heated
    • A47J27/21058—Control devices to avoid overheating, i.e. "dry" boiling, or to detect boiling of the water
    • A47J27/21083—Control devices to avoid overheating, i.e. "dry" boiling, or to detect boiling of the water with variable operating parameters, e.g. temperature or boiling period
    • 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
    • A47J27/21—Water-boiling vessels, e.g. kettles
    • A47J27/21008—Water-boiling vessels, e.g. kettles electrically heated
    • A47J27/21058—Control devices to avoid overheating, i.e. "dry" boiling, or to detect boiling of the water
    • A47J27/21091—Control devices to avoid overheating, i.e. "dry" boiling, or to detect boiling of the water of electronic type
    • 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
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
    • A47J36/04—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay the materials being non-metallic

Definitions

  • the invention relates to an electric kettle, in particular to a smart glass electric kettle controlled by a microcomputer. Background technique
  • the general electric kettle is designed to have a constant temperature within a certain temperature range according to the needs of the user.
  • dual metal sensors are used to achieve this function.
  • the working principle is to utilize the characteristics of different expansion coefficients of the bimetal. When the temperature rises beyond a certain range of the set value, the bimetal expansion is separated due to the difference in the magnitude of the bimetal expansion, thereby causing the circuit to be disconnected and stopping the heating; The expanded metal shrinks, and when it is shrunk to the same length of the bimetal, the circuit is turned on and heating is continued. Therefore, the prior art electric kettle often only maintains the constant temperature within the range of ⁇ 10 ° C, and it is difficult to achieve long-term, accurate constant temperature control.
  • Another object of the present invention is to provide a glass electric kettle which can provide effective dry burning protection.
  • a glass electric kettle of the present invention comprises a glass kettle, a resistive film heating portion applied to an outer surface of a bottom portion of the glass bottle, and a control portion electrically connected to the resistive film, wherein the control portion includes a pre-installed control program a microcomputer processor, a control panel having a control input key and a user inputting a work command and a set temperature, and a top surface provided on the bottom of the glass kettle is not applied.
  • the water temperature sensor on the area where the resistive film is applied, the temperature sensed by the water temperature sensor is transmitted to the microcomputer processor, and the microcomputer processor issues a control signal according to the input work command and the set temperature.
  • a dry-burning temperature sensor is also disposed on the area where the resistive film is applied to the outer surface of the bottom surface of the glass kettle.
  • the monitoring signal is transmitted to the microcomputer processor, and the microcomputer processor sends a control signal to cut off the power.
  • the basic working procedures of the glass electric kettle of the invention include active dry burning detection, boiling heating, ordinary heating, and active dynamic constant temperature.
  • the electrothermal glass kettle of the present invention can achieve long-term, accurate temperature control and can provide effective dry burning protection as compared with the prior art.
  • Figure 1 is a schematic view of a glass electric kettle of the present invention
  • FIG. 2 is a schematic view of the glass electric kettle of the present invention not including a control portion
  • Figure 3-6 is a flow chart of different working procedures of the present invention. Implementation
  • the glass electric kettle of the present invention comprises a glass kettle 1, a heating portion and a control base 3.
  • the heating portion includes a resistive film 2 and an electrode 5 applied to the outer surface of the bottom of the glass kettle 1.
  • the control panel 4 on the control base 3 has a plurality of control input keys for the user to input commands, and a microcomputer processor (not shown) is mounted inside the control base 3.
  • the water temperature sensor 7 is provided on the outer surface of the glass kettle 1 where the resistive film 2 is not applied, and is used to detect the water temperature in the glass kettle 1.
  • the resistive film 2 of the present invention can be applied to the bottom outer surface of the jug 1 using a composition or production process well known in the art.
  • the present invention also provides a dry burn temperature sensor 6 on the area where the resistive film 2 is applied to the outer surface of the bottom surface of the glass kettle 1.
  • the microcomputer can react in time to turn off the power and issue a warning signal.
  • FIG. 3-6 is a flow chart of the above working procedure.
  • the active dry burn test is performed before each heating operation.
  • the resistive film is heated with 180-220W as the test standard power, and the temperature rise measured by the dry burn sensor 6 is measured within 28 seconds.
  • the value ⁇ is compared with the theoretical expected temperature rise value ⁇ d. If ⁇ has reached ATd within 28 seconds, it is determined that dry burning has occurred; otherwise, the condition is normal, and other corresponding working procedures are performed according to the user's instruction. ATd is determined as follows:
  • To is the initial water temperature
  • A is the dry burning determination adjustment constant
  • the correspondence between To and ⁇ is as follows:
  • Figure 4 shows the workflow for boiling heating.
  • the microcomputer processor first performs the active dry burn detection as described above. If the test result is normal, the resistive film 2 continues to heat, and when the water temperature sensor 7 measures the water temperature relative to the boiling. At a lower temperature, such as 90 ° C, the time interval T4 required to raise the temperature by 4 ° C is measured, and then it is measured whether the rise in water temperature exceeds 0.5 ° C in each T4 time interval. If it is exceeded, the heating is continued. If it is not exceeded, it indicates that the water temperature has reached boiling point. The microcomputer processor issues a boiling prompt.
  • FIG. 5 shows the workflow for normal heating.
  • the "normal heating” is only a case of “boiling heating” as described above, and means that the heating temperature set by the user is lower than the boiling point.
  • the microcomputer processor's control program sets a heating buffer when the water temperature approaches the set temperature, with a lower heating power. Heating (e.g., 325W) causes the water temperature to gradually ramp to the temperature set by the user.
  • the starting temperature Ts of the heating buffer is calculated as follows:
  • ⁇ 0 is the buffer temperature calculation constant
  • ⁇ is the compensation coefficient
  • ⁇ is the set temperature input by the user, and To is the initial water temperature.
  • u is 10 -6 .
  • the microcomputer processor starts the "normal heating” work procedure.
  • the starting temperature Ts of the heating buffer is calculated based on the initial water temperature To and the set temperature T measured by the water temperature sensor 7. If the measured real-time water temperature Tc ⁇ Ts, first perform "active dry burning detection", if the situation is not normal, then power off and give a prompt, otherwise the resistive film 2 is energized and heated, and the heating power is not limited at this time. Maximum rated power. Until the measured real-time water temperature Tc ⁇ Ts, it indicates that the heating needs to enter the buffer zone. First, the “active dry burning detection” is performed. If the condition is normal, the heating power of the buffer is continued at 325W until the set temperature is reached.
  • the electric kettle of the present invention has an "active dynamic constant temperature” working procedure.
  • Fig. 6 shows the working flow of the "active dynamic constant temperature” of the electric kettle of the present invention.
  • the electric kettle of the present invention draws an active dynamic constant temperature program, that is, the temperature of the water is dynamically maintained within the temperature range of T k +Y and T k -X according to the temperature T k required by the user to maintain the constant temperature.
  • ⁇ , ⁇ can take values between 1 and 2.5 as needed.
  • the water temperature is regarded as a constant temperature in the above temperature range.
  • the microcomputer processor After the water temperature enters the constant temperature state, the microcomputer processor first calculates a starting constant temperature power, and then performs active dry burning detection. If no dry burning occurs, the initial constant temperature power is used for constant temperature heating to enter. In the active dynamic constant temperature process, the microcomputer processor calculates the dynamic constant temperature power at any time according to the temperature measured by the water temperature sensor 7, and performs an update every 2-10 seconds, thereby realizing an active constant temperature process.
  • the above initial constant temperature power P Tk and dynamic constant temperature power P Tk are calculated as follows:
  • T k is the constant temperature set by the user
  • Tc is the water temperature measured in real time
  • Tp is the water temperature measured the previous time
  • u is 10" 6
  • m is 10 -3 .
  • the water temperature can be slowly heated to the temperature set by the user and maintained for a long time.
  • the constant temperature state will be quickly pushed to the cooled state or the heated state.
  • the heating power is 0, that is, the resistive film does not heat up until The water temperature is cooled to a constant temperature.
  • the microcomputer processor first performs active dry burning judgment, and then heats the water temperature to a constant temperature state by a normal heating working procedure.
  • the water temperature is heated and slowly enters the cooling state. At this low power, it enters the cooling state, which is generally not harmful to the glass kettle.
  • the microcomputer processor executes the "constant temperature dry burning determination" program, that is, detects the number of times of the constant temperature state and the cooling state transition in the predetermined time. When the number of conversions exceeds the predetermined value, it is determined that the dry burning occurs, and the prompt signal is issued in time. Power off.
  • the predetermined number of conversions is related to the constant temperature set by the user, and the corresponding relationship is as follows:
  • the electric kettle of the present invention can be, for example, heated to boiling; kept at a set temperature after boiling; heated and maintained to a set temperature; heated to a first set temperature and
  • the second set temperature is constant temperature and other functions.
  • the maximum temperature limit can be set to avoid damage to the glass kettle.
  • the microcomputer processor signals and powers down.
  • the maximum power and maximum temperature limits for the heating element are as follows:

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Cookers (AREA)

Abstract

L'invention concerne une bouilloire électrique en verre (1) qui comprend une partie chauffante constituée d'un film résistant sur la surface extérieure à la base de la bouilloire en verre, ainsi qu'une partie de commande reliée électriquement au film résistant (2). Ladite partie de commande comprend un processeur micro-informatique à programmes de commande prédéfinis, un panneau de commande (4) qui comporte des touches de commande et d'entrée et par l'intermédiaire duquel un utilisateur peut entrer des instructions de fonctionnement et des températures de consigne, ainsi qu'un capteur de température de l'eau (7) placé sur la région sans film résistant sur la surface extérieure à la base de la bouilloire en verre. Les températures détectées par le capteur de température de l'eau (7) sont transférées au processeur micro-informatique, lequel envoie des signaux de commande conformément aux instructions de fonctionnement et aux températures de consigne entrées.
PCT/CN2006/002069 2006-08-15 2006-08-15 Bouilloire électrique en verre intelligente WO2008031253A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2006/002069 WO2008031253A1 (fr) 2006-08-15 2006-08-15 Bouilloire électrique en verre intelligente

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2006/002069 WO2008031253A1 (fr) 2006-08-15 2006-08-15 Bouilloire électrique en verre intelligente

Publications (1)

Publication Number Publication Date
WO2008031253A1 true WO2008031253A1 (fr) 2008-03-20

Family

ID=39183336

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2006/002069 WO2008031253A1 (fr) 2006-08-15 2006-08-15 Bouilloire électrique en verre intelligente

Country Status (1)

Country Link
WO (1) WO2008031253A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2470472A (en) * 2009-05-19 2010-11-24 Richards Morphy N I Ltd Water heating vessel and liquid level
EP2306870A1 (fr) * 2008-06-26 2011-04-13 Breville PTY Limited Bouilloire et base
CN103263216A (zh) * 2013-05-28 2013-08-28 中山市新纪元电器有限公司 一种远红外发热膜玻璃加热壶
CN103610386A (zh) * 2013-12-04 2014-03-05 李高升 一种防干烧的玻璃电热水壶
CN105361696A (zh) * 2014-09-01 2016-03-02 李高升 玻璃电热水壶的加热控制方法
CN107157316A (zh) * 2016-03-07 2017-09-15 广东美的生活电器制造有限公司 一种液体加热装置、电热水瓶及其防干烧控制方法
CN111110035A (zh) * 2019-12-30 2020-05-08 曲烜逸 一种智能自清洁茶具套件

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0528656A1 (fr) * 1991-08-12 1993-02-24 Strix Limited Bouillaires
US5693244A (en) * 1994-10-14 1997-12-02 U.S. Philips Corporation Apparatus for heating liquids which operates power supply in response to detection of heating element bending
CN2438400Y (zh) * 2000-07-14 2001-07-11 黄如军 分体式电热膜玻璃壶
CN2568089Y (zh) * 2002-09-04 2003-08-27 深圳市宝安区西乡镇臣田唐锋电器厂 任意位置电子水煲
CN2645563Y (zh) * 2003-10-15 2004-10-06 赵伟忠 电子式快热壶

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0528656A1 (fr) * 1991-08-12 1993-02-24 Strix Limited Bouillaires
US5693244A (en) * 1994-10-14 1997-12-02 U.S. Philips Corporation Apparatus for heating liquids which operates power supply in response to detection of heating element bending
CN2438400Y (zh) * 2000-07-14 2001-07-11 黄如军 分体式电热膜玻璃壶
CN2568089Y (zh) * 2002-09-04 2003-08-27 深圳市宝安区西乡镇臣田唐锋电器厂 任意位置电子水煲
CN2645563Y (zh) * 2003-10-15 2004-10-06 赵伟忠 电子式快热壶

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2306870A1 (fr) * 2008-06-26 2011-04-13 Breville PTY Limited Bouilloire et base
EP2306870A4 (fr) * 2008-06-26 2011-11-16 Breville R & D Pty Ltd Bouilloire et base
EP2630897A1 (fr) * 2008-06-26 2013-08-28 Breville Pty Limited Bouilloire et base
GB2470472B (en) * 2009-05-19 2011-08-03 Richards Morphy N I Ltd Liquid preparation
GB2470472A (en) * 2009-05-19 2010-11-24 Richards Morphy N I Ltd Water heating vessel and liquid level
WO2014190844A1 (fr) * 2013-05-28 2014-12-04 中山市新纪元电器有限公司 Bouteille chauffante en verre pourvue d'un film de production de chaleur à infrarouge lointain
CN103263216A (zh) * 2013-05-28 2013-08-28 中山市新纪元电器有限公司 一种远红外发热膜玻璃加热壶
CN103610386A (zh) * 2013-12-04 2014-03-05 李高升 一种防干烧的玻璃电热水壶
CN103610386B (zh) * 2013-12-04 2016-08-24 广东爱乐活科技有限公司 一种防干烧的玻璃电热水壶
CN105361696A (zh) * 2014-09-01 2016-03-02 李高升 玻璃电热水壶的加热控制方法
CN107157316A (zh) * 2016-03-07 2017-09-15 广东美的生活电器制造有限公司 一种液体加热装置、电热水瓶及其防干烧控制方法
CN107157316B (zh) * 2016-03-07 2023-05-30 广东美的生活电器制造有限公司 一种液体加热装置、电热水瓶及其防干烧控制方法
CN111110035A (zh) * 2019-12-30 2020-05-08 曲烜逸 一种智能自清洁茶具套件
CN111110035B (zh) * 2019-12-30 2022-12-23 曲烜逸 一种智能自清洁茶具套件

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