WO2020011136A1 - 基于对电磁脉冲的响应确定灶具器具上的炊具位置 - Google Patents

基于对电磁脉冲的响应确定灶具器具上的炊具位置 Download PDF

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Publication number
WO2020011136A1
WO2020011136A1 PCT/CN2019/095138 CN2019095138W WO2020011136A1 WO 2020011136 A1 WO2020011136 A1 WO 2020011136A1 CN 2019095138 W CN2019095138 W CN 2019095138W WO 2020011136 A1 WO2020011136 A1 WO 2020011136A1
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WO
WIPO (PCT)
Prior art keywords
heating element
temperature sensor
appliance
voltage
cooker
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2019/095138
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English (en)
French (fr)
Inventor
迈克尔·布卢姆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Intelligent Cooking Appliances Co Ltd
Haier US Appliance Solutions Inc
Original Assignee
Qingdao Haier Intelligent Cooking Appliances Co Ltd
Haier US Appliance Solutions Inc
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Filing date
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Application filed by Qingdao Haier Intelligent Cooking Appliances Co Ltd, Haier US Appliance Solutions Inc filed Critical Qingdao Haier Intelligent Cooking Appliances Co Ltd
Publication of WO2020011136A1 publication Critical patent/WO2020011136A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • F24C7/083—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination on tops, hot plates
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/07—Heating plates with temperature control means

Definitions

  • This subject matter relates generally to cooker appliances, or more particularly to methods for operating cooker appliances.
  • Stove appliances generally include heating elements for heating cooking appliances, such as pots, pans and griddles.
  • the user can select the desired heating level and modify the operation of the heating element to match the desired heating level.
  • some cooker appliances include electric heating elements. During operation, such a cooker appliance operates an electric heating element with a predetermined power output corresponding to a selected heating level.
  • the predetermined power output is only an indirect measurement of the actual cooking temperature.
  • Some cooker appliances use a temperature sensor to directly measure the temperature of the cooking appliance and / or the products contained within the cooking appliance. The measured temperature can then be used to adjust the power output above or below a predetermined level in order to achieve a cooking temperature closer to the selected heating level.
  • a cooking appliance with a temperature sensor may be misplaced.
  • a cooking appliance with a temperature sensor may be located on a heating element other than a heating element that is adjusted based on the measured temperature.
  • the cooking appliance having a temperature sensor may be a first cooking appliance, and the second cooking appliance may be located on a heating element adjusted based on a measured temperature of the first cooking appliance.
  • the article in the first cooking appliance may not be heated as desired, and the power output of the heating element adjusted based on the measured temperature may be adjusted to be unsuitable for the second cooking appliance and / or The level of the products, which may reduce the cooking performance of the cooker.
  • a cooker appliance having features for avoiding such reduced cooking performance would be useful.
  • a cooker appliance in an exemplary aspect of the present disclosure, includes a first heating element and a second heating element. The first and second heating elements are positioned at the cooker surface of the cooker appliance.
  • the cooker appliance also includes a controller operatively connected to the first and second heating elements.
  • the controller is configured to receive a signal from a temperature sensor associated with a cooking appliance located on one of the first heating element and the second heating element. The signal indicates a temperature associated with the cooking appliance.
  • the controller is further configured to generate an electromagnetic pulse using a first heating element for a test period, and monitor a voltage or current associated with the temperature sensor during the test period.
  • the controller is further configured to determine that the cooking appliance is located on the first heating element when a voltage or current associated with the temperature sensor displays electromagnetic interference from the electromagnetic pulse.
  • a method of operating a cooktop appliance has a first heating element and a second heating element positioned at a cooking surface of the cooker appliance.
  • the cooker appliance is operatively connected with a temperature sensor associated with a cooking appliance on one of the first heating element and the second heating element.
  • the method includes generating a magnetic pulse using a first heating element for a test period; and monitoring a voltage or current associated with a temperature sensor during the test period.
  • the method further includes determining that the cooking appliance is located on the first heating element when a voltage or current associated with the temperature sensor displays electromagnetic interference from the electromagnetic pulse.
  • FIG. 1 provides a perspective view of a stove with a stove appliance according to one or more exemplary embodiments of the present subject matter.
  • FIG. 2 provides a schematic diagram of the cooker appliance of FIG. 1, where the induction heating element of the cooker appliance shown heats a cooking appliance on the induction heating element.
  • FIG. 3 provides a top schematic view of the exemplary cooker appliance of FIG. 1.
  • FIG. 4 provides a schematic diagram of a control system that can be used with the exemplary cooktop appliance of FIG. 2.
  • FIG. 5 provides an additional top schematic view of the exemplary cooktop appliance of FIG. 1.
  • FIG. 6 provides a flowchart of an exemplary method of operating a cooktop appliance.
  • FIG. 7 illustrates an exemplary current through a temperature sensor according to at least one embodiment in response to an electromagnetic pulse from the heating element when a cooking appliance associated with the temperature sensor is on the heating element.
  • FIG. 8 illustrates an exemplary current through the temperature sensor of FIG. 7 in response to an electromagnetic pulse from the heating element when a cooking appliance associated with the temperature sensor is not on the heating element.
  • FIG. 9 illustrates an exemplary voltage across a temperature sensor according to at least one embodiment in response to an electromagnetic pulse from a heating element at a low setting when a cooking appliance associated with the temperature sensor is on the heating element.
  • FIG. 10 illustrates an exemplary voltage across the temperature sensor of FIG. 9 in response to an electromagnetic pulse from the heating element at a high setting when a cooking appliance associated with the temperature sensor is on the heating element.
  • FIG. 11 illustrates an exemplary voltage across the temperature sensor of FIG. 9 in response to an electromagnetic pulse from a heating element at a low setting when a cooking appliance associated with the temperature sensor is not on the heating element.
  • FIG. 12 illustrates an exemplary voltage across the temperature sensor of FIG. 9 in response to an electromagnetic pulse from a heating element at a high setting when a cooking appliance associated with the temperature sensor is not on the heating element.
  • approximate terms such as “substantially” or “about” include values greater than or less than ten percent of the stated value. When used in the context of an angle or direction, these terms include degrees within 10 degrees greater or less than the angle or direction.
  • substantially vertical includes in any direction with the vertical direction V (for example, Clockwise or counterclockwise).
  • FIG. 1 provides a perspective view of a stove appliance or stove 10 including a stove 12.
  • the stove 10 is provided as an example only, and is not intended to limit the subject matter to the arrangement shown in FIG. 1.
  • the subject matter can be used with other stove 10 and / or stove 12 configurations (eg, dual oven stove appliances, stand-alone stove appliances, stove-less appliances, etc.).
  • the cooking surface 14 of the cooker appliance 12 includes a plurality of heating elements 16.
  • the heating element 16 is positioned substantially on or near the cooking surface 14, for example.
  • the cooker 12 may be an induction cooker having an induction heating element mounted under the cooking surface 14.
  • the hob 12 includes five heating elements 16 spaced along the cooking surface 14.
  • the cooktop appliance 12 may include any other suitable shape, configuration, and / or number of heating elements 16.
  • Each of the heating elements 16 may be the same type of heating element 16, or the cooktop appliance 12 may include a combination of different types of heating elements 16.
  • the cooker appliance 12 may include any other suitable type of heating element 16, such as a resistance heating element or a gas burner.
  • a cooking appliance 18 (such as a pot, pan or the like) may be placed on the heating element 16 to heat the cooking appliance 18 and cook or heat food items placed in the cooking appliance 18.
  • the stove appliance 10 also includes a door 20 that allows access to a cooking chamber (not shown) of the stove appliance 10, for example, for cooking or baking food items therein.
  • a control panel 22 having a control 24 allows a user to make a selection of food item cooking. Although shown on the tailgate or rear panel 26 of the cooktop appliance 10, the control panel 22 may be positioned at any suitable location.
  • the control member 24 may include buttons, knobs, and the like, and combinations thereof, and / or the control member 24 may be implemented on a remote user interface device such as a smart phone, as described below.
  • a user may manipulate one or more controls 24 to select a temperature and / or heat or power output for each heating element 16. The selected temperature or heat output of the heating element 16 influences the heat transferred to the cooking appliance 18 placed on the heating element 16.
  • the cooktop appliance 12 includes a control system 50 (FIG. 4) for controlling one or more of the plurality of heating elements 16.
  • the control system 50 may include a controller 52 (FIGS. 3 and 4) operatively connected to the control panel 22 and the control member 24.
  • the controller 52 may be operatively connected to each of the plurality of heating elements 16 to control each of the plurality of heating elements 16 in response to one or more user inputs received through the control panel 22 and the control member 24. Heating level.
  • FIG. 2 provides a schematic view of the induction heating element 16, which is shown to heat a cooking appliance 18 supported on a cooking surface 14.
  • the induction heating element 16 includes a secondary coil or wiring 15.
  • the cooker appliance 10 may supply an electric current to the secondary coil 15. Therefore, a current passes through the secondary coil 15 and the secondary coil 15 generates a magnetic field (shown by a dotted line M).
  • the magnetic field may be a high-frequency circulating magnetic field.
  • the lenticular coil 15 may be oriented such that the magnetic field M is directed toward the cooking surface 14 and is directed toward the cooking appliance 18 through the cooking surface 14.
  • the magnetic field M when the magnetic field M penetrates the cooking appliance 18, the magnetic field M induces a circulating current in the cooking appliance 18 (for example, in the bottom wall 19 of the cooking appliance 18).
  • the material characteristics of the cooking appliance 18 limit the flow of the induced current and convert the induced current into heat in the cooking appliance 18.
  • the contents 32 contained in the cooking appliance 18 are also heated. In this way, the induction heating element 16 can cook the contents 32 of the cooking appliance 18.
  • FIG. 3 a schematic top view of the cooktop 12 of FIG. 1 or, more specifically, a schematic top view of the cooking surface 14 of the cooktop 12 of FIG. 1 is provided.
  • the cooking surface 14 of the cooktop 12 for the illustrated embodiment includes five heating elements 16 spaced apart along the cooking surface 14.
  • the cooking appliance 18, also shown schematically, is positioned on a first heating element 16 of a plurality of heating elements 16.
  • a cooker temperature sensor 28 and a food temperature sensor 30 are also associated with the cooking appliance 18.
  • the cooker temperature sensor 28 may be in contact with, attached to, or integrated with the cooking appliance 18 and configured to sense, for example, a bottom surface of the cooking appliance 18 or a bottom wall of the cooking appliance 18 temperature.
  • the cooker temperature sensor 28 may be embedded in the bottom wall of the cooking appliance 18 as shown in FIG. 4.
  • the cooker temperature sensor 28 may be embedded in the side wall of the cooking appliance 18, for example, adjacent to the bottom surface or the bottom wall of the cooking appliance 18.
  • the food temperature sensor 30 may be positioned at any suitable location to sense the temperature of one or more food items 32 (see FIG. 4) located within the cooking appliance 18.
  • the food temperature sensor 30 may be a probe-type temperature sensor configured to be inserted into one or more food items 32.
  • the food temperature sensor 30 may be configured to determine the temperature of one or more food items positioned within the cooking appliance 18 in any other suitable manner.
  • one or both of the cooker temperature sensor 28 and the food temperature sensor 30 may employ any suitable technique to sense / determine the temperature of the cooking appliance 18 and / or locate the temperature in the cooking appliance 18 The temperature of the food item 32.
  • the cooker temperature sensor 28 and the food temperature sensor 30 may measure respective temperatures by a contact and / or non-contact method.
  • one or both of the cooker temperature sensor 28 and the food temperature sensor 30 may employ one or more of a thermocouple, a thermistor, an optical temperature sensor, an infrared temperature sensor, and a resistance temperature detector (RTD).
  • RTD resistance temperature detector
  • the cooker appliance 12 additionally includes at least one receiver 34.
  • the cooker appliance 12 includes a plurality of receivers 34, each receiver 34 being associated with a separate heating element 16.
  • Each receiver 34 is configured to receive a temperature from the food temperature sensor 30 indicating that one or more food items 32 are positioned within the cooking appliance 18 and / or an instruction from the cooker temperature sensor 28 that is located at a corresponding heating element 16
  • the temperature of the cooking appliance 18 is a signal.
  • a single receiver 34 may be provided, and a single receiver 34 may be operatively connected to one or more of the sensors.
  • one or both of the cooker temperature sensor 28 and the food temperature sensor 30 may include wireless transmission capabilities, or alternatively may be hard-wired to the receiver 34, such as through a wired communication bus.
  • FIG. 4 provides a schematic diagram of a system for operating a cooker appliance 12 according to an exemplary embodiment of the present disclosure. Specifically, FIG. 4 provides a schematic view of an exemplary control system 50 and a heating element 16 of the exemplary cooktop appliance 12 of FIGS. 1 to 3.
  • the cooker appliance 12 includes a receiver 34 associated with one or more of the heating elements 16, for example each of the plurality of receivers 34 is associated with a corresponding heating element 16.
  • each receiver 34 is positioned directly below the central portion of the respective heating element 16.
  • each receiver 34 is configured as a wireless receiver 34 that is configured to receive one or more wireless signals.
  • both the cooker temperature sensor 28 and the food temperature sensor 30 are configured as wireless sensors that wirelessly communicate with the wireless receiver 34 via the wireless communication network 54.
  • the wireless communication network 54 may be a wireless sensor network (such as a Bluetooth communication network), a wireless local area network (WLAN), a point-to-point communication network (such as a radio frequency identification (RFID) network, a near field communication network, etc.), A combination of two or more of the above communication networks, or one or more of any suitable wireless communication networks.
  • a wireless sensor network such as a Bluetooth communication network
  • WLAN wireless local area network
  • RFID radio frequency identification
  • each receiver 34 associated with a respective heating element 16 is operatively connected to the controller 52 of the control system 50.
  • the receiver 34 may be operatively connected to the controller 52 via a wired communication bus (as shown) or alternatively through a wireless communication network similar to the exemplary wireless communication network 54 discussed above.
  • the controller 52 may generally include a computing device 56 having one or more processors 58 and an associated storage device 60.
  • the computing device 56 may be configured to perform various computer-implemented functions to control the exemplary cooktop appliance 12.
  • Computing device 56 may include a general purpose computer or special purpose computer, or any other suitable computing device.
  • the processor 58 may refer to a controller, a microcontroller, a microcomputer, a programmable logic controller (PLC), an application specific integrated circuit, and other programmable circuits.
  • the storage device (s) 60 may generally include (one or more) storage elements, including but not limited to computer-readable media (e.g., random access memory (RAM)), computer-readable non- Volatile media (eg, flash memory), compact disc read-only memory (CD-ROM), magneto-optical disc (MOD), digital versatile disc (DVD), and / or other suitable storage elements.
  • the memory 60 may store information accessible by the processor (s) 58, including instructions executable by the processor (s) 58.
  • the instructions may be software or any set of instructions that when executed by the processor (s) 58 causes the processor (s) 58 to perform operations.
  • the instructions may include a software package configured as an operating system (e.g., to perform the exemplary methods described below).
  • the control system 50 additionally includes a user interface 62 operatively connected to the controller 52.
  • the user interface 62 is configured to communicate with the controller 52 by wire.
  • the user interface 62 may additionally or alternatively be wireless via one or more suitable wireless communication networks (such as the exemplary wireless communication network 54 described above).
  • the user interface 62 may be configured as a control panel 22 and a plurality of controls 24 on the cooker appliance 12 (see FIG. 1).
  • the user interface 62 may be configured as an external computing device or a remote user interface device, such as a smartphone, tablet, or other device that can be connected to the controller 52 of the exemplary control system 50.
  • the remote user interface may be an application program or "app" executed by a remote user interface device such as a smart phone or tablet.
  • the cooktop 12 is operated by a signal generated in the controller 52 in response to a user input via the user interface 62.
  • the controller 52 is operatively connected to each of the plurality of heating elements 16 to control the plurality of heating in response to one or more user inputs through the user interface 62 (eg, the control panel 22 and the control member 24).
  • the controller 52 is operatively connected to a plurality of current control devices 64, each current control device 64 and the induction A respective one of the heating elements 16 is associated.
  • a first cooking appliance 18A is shown, which may include one or both of a cooker temperature sensor 28 and a food temperature sensor 30, for example, as any one or a combination of the above examples.
  • a second cooking appliance 18B As shown in FIG. 5, the heating element controlled in response to the measured temperature from the temperature sensors 28 and / or 30 may be a first heating element 16A and the cooker 12 may further include a second heating element 16B.
  • one or more cooking appliances may be misplaced.
  • the first and second cooking appliances 18A and 18B are both misplaced.
  • the first cooking appliance 18A is not placed on the first heating element 16A that is controlled in response to temperature measurement results from the temperature sensors 28 and / or 30 located in the first cooking appliance 18A, so that the expected response heating is not provided to the first A cooking appliance 18A and the products therein.
  • an appliance "on" a heating element is positioned next to the heating element (e.g., within the magnetic field of an induction heating element) so that it is sufficiently heated by the heating element, but the appliance is not It must be in direct physical contact with the heating element and "on” the heating element.
  • the second cooking appliance 18B is also misplaced because the second cooking appliance 18B and the products therein may respond to temperatures other than the actual temperature of the second cooking appliance 18B and any food products 32 therein (e.g., by the first The level of the temperature measured by the sensors 28 and / or 30 in the cooking appliance 18A is heated by the first heating element 16A.
  • the controller 52 may be configured to receive, for example, via a receiver 34 described above, a temperature sensor associated with the first cooking appliance 18A located on one of the first heating element 16A and the second heating element 16B. signal of.
  • the signal may indicate a temperature associated with the first cooking appliance 18A.
  • a temperature sensor may be associated with the cooking appliance 18A, where a temperature sensor (such as the cooker temperature sensor 28) is positioned and configured to sense the temperature of the cooking appliance 18A itself, and / or a temperature sensor (such as the food temperature sensor 30) is located And configured to sense the temperature of the contents of the cooking appliance.
  • the controller 52 may be further configured to determine the position of the first cooking appliance 18A based on the electromagnetic interference detected via the temperature sensors 28 and / or 30.
  • FIG. 6 illustrates an exemplary method 200 of operating a cooker appliance, such as the exemplary cooker 12.
  • the controller 52 may be configured to perform some or all of the steps of the method 200.
  • the method 200 may initially include receiving a signal 202, such as from a control panel or one or more controls. Reception of such a signal may indicate based on a measurement by a temperature sensor 28 and / or 30 associated with a particular item of a cooker (e.g., a first cooking appliance 18A on a particular intended burner (e.g., a first heating element 16A)).
  • the measured temperature is expected or intent to perform closed-loop control cooking operations.
  • method 200 may include determining that the measured temperature is associated with a cooking appliance on an intended heating element (e.g., a heating element that is controlled based on the measured temperature as described below).
  • method 200 may include step 204 and / or controller 52 may be configured to generate electromagnetic pulses for a test period.
  • the electromagnetic pulse may be generated for a predetermined period of time by activating the first heating element 16A (eg, by supplying a current to the coil 15 (FIG. 2) of the first heating element 16A).
  • the predetermined time period may be a first predetermined time period, and generating the electromagnetic pulse may further include deactivating the first heating element 16A, for example, interrupting the current to the coil 15 after the first predetermined time period—a second Scheduled time period. Therefore, the test period may include one or more predetermined time periods.
  • the second heating element 16B may be disabled or enabled at a low heating level during the test period.
  • the position of the first cooking appliance 18A may be determined or confirmed with minimal or no interruption in a desired cooking operation due to the transient response of the electromagnetic field from the electromagnetic pulse.
  • the method 200 may further include a step 206 of monitoring a voltage or current associated with the temperature sensor during the test period.
  • the voltage or current values associated with the temperature sensors 28 and / or 30 may be continuously measured during the test period. Therefore, it should be understood that “monitored”, “monitoring” or other cognate words as used herein include continuous or repeated measurement or sampling of data, such as voltage or current, over a period of time. In at least some embodiments, whether the voltage or current is monitored may depend on what type of sensor is used.
  • the temperature sensors 28 and / or 30 may be thermocouples, and the controller 52 may be configured to monitor the voltage across the thermocouple during the test period.
  • the temperature sensors 28 and / or 30 may be one of a thermistor or a resistance temperature detector, and the controller 52 may be configured to monitor the current through the temperature sensor during the test period .
  • the method 200 may further include, at step 208, determining whether the temperature sensor displays or exhibits electromagnetic interference from the electromagnetic pulse, for example, whether the monitored voltage or current is greater than a predetermined threshold. If so, it can be determined that the cooking appliance is on the correct intended heating element (eg, the first heating element 16A).
  • the displayed electromagnetic interference may include a peak-to-peak voltage greater than a predetermined threshold. In such embodiments, the displayed electromagnetic interference may also or alternatively include a minimum voltage or a maximum voltage greater than a predetermined threshold.
  • the displayed electromagnetic interference may include a current that is greater than a predetermined threshold.
  • the method 200 may include adjusting the heating level of the first heating element 16A based on a received signal from the temperature sensor Step 210.
  • the controller 52 may operate the first heating element 16A in response to the measured temperature, such as by adjusting a heating level of the first heating element 16A based on a received signal from the temperature sensors 28 and / or 30.
  • adjusting the heating level may include supplying a variable power level to the first heating element 16A based on the measured temperature, such as by using a closed control loop such as PI or PID control.
  • the measured temperature may be input into a closed control loop, and the operation of the first heating element 16A, such as a heating level, may be adjusted based on the output of the closed control loop.
  • the method 200 may further include step 212 and / or the controller 52 may be further configured to deactivate the first heating element 16A.
  • a notification such as an error message or a warning may also be provided, for example, via the user interface 62.
  • the displayed electromagnetic interference may include a current greater than a predetermined threshold.
  • FIG. 7 illustrates a current response 300 of an exemplary temperature sensor (a thermocouple in this embodiment), wherein the current 300 through the temperature sensor exhibits electromagnetic interference in response to an electromagnetic pulse generated by the first heating element 16A.
  • the presence of electromagnetic interference may be determined based on one or both of the maximum positive current (M P ) or the maximum negative current (M N ) compared to a predetermined threshold value or the peak current (M P + M N ).
  • M P maximum positive current
  • M N maximum negative current
  • thermocouple which is an embodiment of the cooker temperature sensor 28 or the food temperature sensor 30, is not on the first heating element 16A when a cooking appliance (eg, the first cooking appliance 16A) associated with the thermocouple is The current response of the electromagnetic pulse generated by the first heating element 16A is used at this time.
  • the background current 302 through the thermocouple is shown, which is greater than zero but significantly less than the current 300 through the thermocouple in FIG. 7.
  • the displayed electromagnetic interference may include a peak-to-peak voltage greater than a predetermined threshold and / or a minimum or maximum voltage greater than a predetermined threshold.
  • Figures 9 and 10 show the voltage response of an exemplary temperature sensor, such as a thermistor or RTD.
  • the voltage across the temperature sensor exhibits electromagnetic interference in response to the electromagnetic pulse generated by the first heating element 16A.
  • the presence of electromagnetic interference may be determined based on any one or more of a peak-to-peak voltage (eg, amplitude, highest voltage, or lowest voltage) compared to a predetermined threshold.
  • a peak-to-peak voltage eg, amplitude, highest voltage, or lowest voltage
  • FIG. 9 shows an exemplary voltage 400 across a temperature sensor in response to an electromagnetic pulse from the first heating element 16A at a low setting when the first cooking appliance 18A is on the first heating element 16A, which includes The value A L , the highest voltage M L and the lowest voltage N L.
  • FIG. 10 shows an exemplary voltage 402 across a temperature sensor in response to an electromagnetic pulse from the first heating element 16A at a high setting when the first cooking appliance 18A is on the first heating element 16A, It includes the amplitude A H , the highest voltage M H and the lowest voltage N H.
  • FIG. 11 and 12 show the voltage response of a temperature sensor to an electromagnetic pulse generated by the first heating element 16A when the first cooking appliance 16A is not on the first heating element 16A.
  • some measurable responses can be seen, such as when the first cooking appliance 18A is close to but not on the first heating element 16A, for example, the first cooking appliance 18A may A heating element 16A is on the heating element.
  • FIG. 11 some changes in the voltage 404 in response to the electromagnetic pulse generated by the first heating element at a low setting can be seen.
  • some changes in the voltage 406 in response to the electromagnetic pulse generated by the first heating element at a high setting can be seen in FIG. 12.

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  • Combustion & Propulsion (AREA)
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Abstract

一种灶具器具(12) ，包括第一加热元件 (16A)和第二加热元件(16B)以及可操作地连接至第一加热元件(16A)和第二加热元件(16B)的控制器(52)；控制器(52)构造为从与烹饪用具(18)相关联的温度传感器接收信号；控制器(52)还被构造为利用第一加热元件(16A)生成电磁脉冲一测试时段，并且在测试时段期间监测与所述温度传感器相关联的电压或电流；控制器(52)构造为当与温度传感器相关联的电压或电流显示来自电磁脉冲的电磁干扰时，确定烹饪用具(18)位于第一加热元件(16A)上。

Description

基于对电磁脉冲的响应确定灶具器具上的炊具位置 技术领域
本主题总体上涉及灶具器具，或更具体地涉及用于操作灶具器具的方法。
背景技术
灶具器具通常包括用于加热烹饪用具、比如壶、平底锅和平板炉等的加热元件。用户可以选择期望的加热水平，并且修改加热元件的操作以匹配期望的加热水平。例如，某些灶具器具包括电加热元件。在操作期间，这种灶具器具以对应于选择的加热水平的预定功率输出来操作电加热元件。
以对应于所选择的加热水平的预定功率输出操作加热元件带来了某些挑战。例如，预定功率输出仅是实际烹饪温度的间接测量。一些灶具器具采用温度传感器来直接测量烹饪用具和/或包含在烹饪用具内的制品的温度。然后可以使用测量到的温度来将功率输出调节为高于或低于预定水平，以便实现更接近选择的加热水平的烹饪温度。
然而，在某些情况下，具有温度传感器的烹饪用具可能被错放。例如，具有温度传感器的烹饪用具可以位于除基于测量到的温度被调节的加热元件之外的加热元件上。此外，具有温度传感器的烹饪用具可以是第一烹饪用具，并且第二烹饪用具可以位于基于第一烹饪用具的测量到的温度被调节的加热元件上。在这种情况下，第一烹饪用具中的制品可能不会如所期望的被加热，并且基于测量到的温度被调节的加热元件的功率输出可以被调节至不适于第二烹饪用具和/或其中的制品的水平，这可能会降低灶具器具的烹饪性能。
相应地，具有用于避免这种降低的烹饪性能的特征的灶具器具将是有用的。具体而言，具有用于确定或验证具有温度传感器的烹饪用具对应于基于来自温度传感器的测量值而被控制的灶具器具的加热元件或正确地位于其上的特征的 灶具器具将是特别有益的。
发明内容
本发明的方面和优点将部分地在以下描述中阐述，或者可以从描述中显而易见，或者可以通过实践本发明来学习。
在本公开的示例性方面，提供了一种灶具器具。灶具器具包括第一加热元件和第二加热元件。第一和第二加热元件定位在灶具器具的灶具表面处。灶具器具还包括可操作地连接至第一和第二加热元件的控制器。控制器构造为从与位于第一加热元件和第二加热元件中的一个上的烹饪用具相关联的温度传感器接收信号。所述信号指示与烹饪用具相关联的温度。控制器还被构造为利用第一加热元件生成电磁脉冲一测试时段，并且在测试时段期间监测与所述温度传感器相关联的电压或电流。控制器进一步构造为当与温度传感器相关联的电压或电流显示来自电磁脉冲的电磁干扰时，确定烹饪用具位于第一加热元件上。
在另一示例性方面，提供了一种操作灶具器具的方法。灶具器具具有定位在灶具器具的烹饪表面处的第一加热元件和第二加热元件。灶具器具与温度传感器操作性地连接，所述温度传感器与位于第一加热元件和第二加热元件中的一个上的烹饪用具相关联。所述方法包括：利用第一加热元件生成电磁脉冲一测试时段；以及在测试时段期间监测与温度传感器相关联的电压或电流。所述方法进一步包括当与温度传感器相关联的电压或电流显示来自电磁脉冲的电磁干扰时，确定烹饪用具位于第一加热元件上。
参考以下描述和所附权利要求，将更好地理解本发明的这些和其它特征、方面和优点。包含在本说明书中并构成其一部分的附图示出了本发明的实施例，并与描述一起用于解释本发明的原理。
附图说明
在参考所附图的说明书中阐述了本发明的完整的且可实施的公开内容，其包括向本领域技术人员所指引的其最佳模式。
图1提供了根据本主题的一个或更多个示例性实施例的具有灶具器具的炉灶的透视图。
图2提供了图1的灶具器具的示意图，其中示出的灶具器具的感应加热元件加热感应加热元件上的烹饪用具。
图3提供了图1的示例性灶具器具的顶部示意图。
图4提供了可以与图2的示例性灶具器具一起使用的控制系统的示意图。
图5提供了图1的示例性灶具器具的附加的顶部示意图。
图6提供了操作灶具器具的示例性方法的流程图。
图7示出了当与温度传感器相关联的烹饪用具在加热元件上时响应于来自加热元件的电磁脉冲的通过根据至少一个实施例的温度传感器的示例性电流。
图8示出了当与温度传感器相关联的烹饪用具不在加热元件上时响应于来自加热元件的电磁脉冲而通过图7的温度传感器的示例性电流。
图9示出了当与温度传感器相关联的烹饪用具在加热元件上时响应于来自处于低设定的加热元件的电磁脉冲的在根据至少一个实施例的温度传感器两端的示例性电压。
图10示出了当与温度传感器相关联的烹饪用具在加热元件上时响应于来自处于高设定的加热元件的电磁脉冲的在图9的温度传感器两端的示例性电压。
图11示出了当与温度传感器相关联的烹饪用具不在加热元件上时响应于来自处于低设定的加热元件的电磁脉冲的在图9的温度传感器两端的示例性电压。
图12示出了当与温度传感器相关联的烹饪用具不在加热元件上时响应于来自处于高设定的加热元件的电磁脉冲的在图9的温度传感器两端的示例性电压。
具体实施方式
现在将详细参考本发明的实施例，其一个或更多个示例在附图中示出。提供每个示例是为了解释本发明，而不是限制本发明。实际上，对于本领域技术人员来说显而易见的是，在不背离本发明的范围或精神的情况下，可以在本发 明中进行各种修改和变型。例如，作为一个实施例的一部分示出或描述的特征可与另一实施例一起使用，以产生又一实施例。因此，本发明旨在覆盖落入所附权利要求及其等同物的范围内的这些修改和变型。
如本文所使用的，近似术语，比如“大体”或“大约”，包括大于或小于所述值的百分之十以内的值。当在角度或方向的上下文中使用时，这些术语包括比所述角度或方向大10度或小10度内的度数，例如，“大体竖直”包括与竖直方向V在任何方向(例如，顺时针或逆时针)上形成高达10度的角度。
图1提供了包括灶具12的炉灶器具或炉灶10的透视图。炉灶10仅作为示例提供，并且并不旨在将本主题限制于图1中所示的布置。因此，本主题可以与其它炉灶10和/或灶具12构造(例如，双烤箱炉灶器具、独立灶具器具、没有烤箱的灶具器具等)一起使用。
灶具器具12的烹饪表面14包括多个加热元件16。加热元件16大体上定位在比如烹饪表面14上或附近。在某些示例性实施例中，灶具12可以是具有安装在烹饪表面14下方的感应加热元件的感应灶具。对于所示的实施例，灶具12包括沿着烹饪表面14间隔开的五个加热元件16。然而，在其它实施例中，灶具器具12可以包括加热元件16的任何其它合适的形状、构造和/或数量。加热元件16中的每个可以是相同类型的加热元件16，或者灶具器具12可以包括不同类型的加热元件16的组合。例如，在各个实施例中，除了感应加热元件之外，灶具器具12还可以包括任何其它合适类型的加热元件16，比如电阻加热元件或燃气燃烧器等。
如图1中所示，烹饪用具18(比如壶、平底锅或类似物)可以放置在加热元件16上，以加热烹饪用具18并烹饪或加热放置在烹饪用具18中的食物物品。炉灶器具10还包括门20，其允许进入炉灶器具10的烹饪室(未示出)，例如以用于烹饪或烘烤其中的食物物品。具有控制件24的控制面板22允许用户进行食物物品烹饪的选择。尽管示出在炉灶器具10的后挡板或后面板26上，但是控制面板22可以定位在任何合适的位置。控制件24可以包括按钮、旋钮和类 似物、以及其组合，和/或控制件24可以被实施在比如智能电话等远程用户接口装置上，如下所述。作为一个示例，用户可以操纵一个或更多个控制件24以为每个加热元件16选择温度和/或热量或功率输出。加热元件16的选择的温度或热量输出影响传递到放置在加热元件16上的烹饪用具18的热量。
如将在以下以更详细的细节讨论的，灶具器具12包括用于控制多个加热元件16中的一个或更多个的控制系统50(图4)。具体而言，控制系统50可以包括可操作地连接至控制面板22和控制件24的控制器52(图3和4)。控制器52可以可操作地连接至多个加热元件16中的每个以响应于通过控制面板22和控制件24接收到的一个或更多个用户输入来控制多个加热元件16中的每个的加热水平。
图2提供了感应加热元件16的示意图，其示出为加热支撑在烹饪表面14上的烹饪用具18。感应加热元件16包括楞次线圈或配线15。如本领域技术人员将理解的，灶具器具10可以向楞次线圈15供应电流。因此，电流通过楞次线圈15并且楞次线圈15生成磁场(以虚线M示出)。磁场可以是高频循环磁场。如图2中所示，楞次线圈15可以取向为使得磁场M朝向烹饪表面14并通过烹饪表面14指向烹饪用具18。具体而言，当磁场M穿透烹饪用具18时，磁场M在烹饪用具18内(例如在烹饪用具18的底壁19内)感应出循环电流。烹饪用具18的材料特性限制感应电流的流动并将感应电流转换成烹饪用具18内的热量。当烹饪用具18加热时，烹饪用具18的包含在其中的内容物32也加热。以这种方式，感应加热元件16可以烹饪烹饪用具18的内容物32。
现在参考图3，提供了图1的灶具12的顶部示意图，或更具体地说，图1的灶具12的烹饪表面14的顶部示意图。如上所述，对于所示的实施例的灶具12的烹饪表面14包括沿着烹饪表面14间隔开的五个加热元件16。同样示意性地示出的烹饪用具18定位在多个加热元件16的第一加热元件16上。对于所示的实施例，炊具温度传感器28和食物温度传感器30也与烹饪用具18相关联。
在一些示例性实施例中，炊具温度传感器28可以与烹饪用具18接触、附 接或集成到烹饪用具18中，并且被构造成感测例如烹饪用具18的底表面或烹饪用具18的底壁的温度。例如，炊具温度传感器28可以嵌入烹饪用具18的底壁内，如图4中所示。替代地，炊具温度传感器28可以例如邻近烹饪用具18的底表面或底壁嵌入在烹饪用具18的侧壁内。
此外，食物温度传感器30可以定位在任何合适的位置，以感测定位在烹饪用具18内的一个或更多个食物物品32(参见图4)的温度。例如，食物温度传感器30可以是探针型温度传感器，其被构造成插入一个或更多个食物物品32中。然而，替代地，食物温度传感器30可以被构造成以任何其它合适的方式确定定位在烹饪用具18内的一个或更多个食物物品的温度。
在某些示例性实施例中，炊具温度传感器28和食物温度传感器30中的一个或两个可以采用任何合适的技术来感测/确定烹饪用具18的温度和/或定位在烹饪用具18中的食物物品32的温度。炊具温度传感器28和食物温度传感器30可以通过接触和/或非接触方法测量相应的温度。例如，炊具温度传感器28和食物温度传感器30中的一个或两个可以采用热电偶、热敏电阻、光学温度传感器、红外温度传感器、电阻温度检测器(RTD)中的一个或更多个。这些传感器的具体结构和功能是本领域技术人员所熟知的，因此为了清楚和简洁起见，没有更详细地描述或示出这些传感器。
再次参考图3和4，灶具器具12另外地包括至少一个接收器34。在图3所示的示例中，灶具器具12包括多个接收器34，每个接收器34与单独的加热元件16相关联。每个接收器34被构造成接收来自食物温度传感器30的指示定位在烹饪用具18内的一个或更多个食物物品32的温度和/或来自炊具温度传感器28的指示定位在相应的加热元件16上的烹饪用具18的温度的信号。在其它实施例中，可以提供单个接收器34，并且单个接收器34可以操作性地连接至传感器中的一个或更多个。在至少一些示例性实施例中，炊具温度传感器28和食物温度传感器30中的一个或两个可以包括无线传输能力，或替代地可以例如通过有线通信总线硬连线到接收器34。
图4提供了根据本公开的一示例性实施例的用于操作灶具器具12的系统的示意图。具体而言，图4提供了示例性控制系统50和图1至3的示例性灶具器具12的加热元件16的示意图。
如上所述，灶具器具12包括与加热元件16中的一个或更多个相关联的接收器34，例如多个接收器34中的每个与相应的加热元件16相关联。对于所示的实施例，每个接收器34直接定位在相应的加热元件16的中心部分下方。另外，对于所示的实施例，每个接收器34被构造为无线接收器34，其被构造成接收一个或更多个无线信号。具体而言，对于所示的示例性控制系统50，炊具温度传感器28和食物温度传感器30两者都被构造为经由无线通信网络54与无线接收器34无线通信的无线传感器。在某些示例性实施例中，无线通信网络54可以是无线传感器网络(比如蓝牙通信网络)、无线局域网(WLAN)、点对点通信网络(比如射频识别(RFID)网络、近场通信网络等)、上述通信网络中两个或更多个的组合、或一个或更多个任何合适的无线通信网络。
仍然参考图4，与相应的加热元件16相关联的各接收器34可操作地连接至控制系统50的控制器52。接收器34可以经由有线通信总线(如图所示)或替代地通过类似于以上讨论的示例性无线通信网络54的无线通信网络可操作地连接至控制器52。控制器52通常可以包括具有一个或更多个处理器58和相关联的存储装置60的计算装置56。计算装置56可以被构造成执行各种计算机实施的功能以控制示例性灶具器具12。计算装置56可以包括通用计算机或专用计算机，或任何其它合适的计算装置。应当理解的是，如本文所使用的，处理器58可以指控制器、微控制器、微型计算机、可编程逻辑控制器(PLC)、专用集成电路和其它可编程电路。此外，(一个或更多个)存储装置60可以大体包括(一个或更多个)存储元件，其包括但不限于计算机可读介质(例如，随机存取存储器(RAM))、计算机可读非易失性介质(例如，闪存存储器)、光盘只读存储器(CD-ROM)、磁光盘(MOD)、数字多功能盘(DVD)、和/或其它适合的存储元件。存储器60可以存储可由(一个或更多个)处理器58访问的信息，包 括可以由(一个或更多个)处理器58执行的指令。例如，指令可以是软件或任何指令集，当由(一个或更多个)处理器58执行时，使得(一个或更多个)处理器58执行操作。对于所示的实施例，指令可以包括被构造成操作系统(例如，执行下述的示例性方法)的软件包。
仍然参考图4，控制系统50另外包括可操作地连接至控制器52的用户接口62。对于所示的实施例，例如，在图4中，用户接口62被构造为与控制器52有线通信。然而，在其它示例性实施例中，例如，如图3中所示，用户接口62可以附加地或替代地经由一个或更多个合适的无线通信网络(比如上述示例性无线通信网络54)无线连接至控制器52。在某些示例性实施例中，用户接口62可以被构造为在灶具器具12上的控制面板22和多个控制件24(参见图1)。附加地或替代地，用户接口62可以被构造为外部计算装置或远程用户接口装置，比如智能电话、平板电脑或能够连接至示例性控制系统50的控制器52的其它装置。例如，在一些实施例中，远程用户接口可以是由比如智能电话或平板电脑等远程用户接口装置执行的应用程序或“app”。响应于经由用户接口62的用户输入通过在控制器52中生成的信号来操作灶具12。
此外，控制器52可操作地连接至多个加热元件16中的每个，以响应于通过用户接口62(例如，控制面板22和控制件24)的一个或更多个用户输入来控制多个加热元件16中的每个的功率水平。具体而言，对于所示的实施例，其中加热元件16中的一个或更多个构造为感应加热元件，控制器52可操作地连接至多个电流控制装置64，每个电流控制装置64与感应加热元件16中的相应一个相关联。
现在转到图5，示出了第一烹饪用具18A，其可以包括炊具温度传感器28和食物温度传感器30中的一个或两个，例如，如上述示例中的任何一个或组合。图5中还示出了第二烹饪用具18B。如图5中所示，响应于来自温度传感器28和/或30的测量到的温度而被控制的加热元件可以是第一加热元件16A并且灶具12还可以包括第二加热元件16B。通过这种示例性灶具12，一个或更多个烹 饪用具可能被错放。例如，如图5中所示，第一和第二烹饪用具18A和18B都被错放。第一烹饪用具18A未放置在响应于来自位于第一烹饪用具18A中的温度传感器28和/或30的温度测量结果而被控制的第一加热元件16A上，使得预期的响应加热不提供给第一烹饪用具18A和其中的制品。如本文中所使用的并且如本领域通常所理解的那样，“在”加热元件上的用具紧邻加热元件(例如在感应加热元件的磁场内)定位，从而足以被加热元件加热，但用具并不必须与加热元件直接物理接触而“在”加热元件上。第二烹饪用具18B也被错放，因为第二烹饪用具18B和其中的制品可以以响应于除了第二烹饪用具18B以及其中的任何食物制品32的实际温度之外的温度(例如，由第一烹饪用具18A中的传感器28和/或30测量的温度)的水平被第一加热元件16A加热。
在一些实施例中，控制器52可以被构造成例如经由上述的接收器34接收来自与位于第一加热元件16A和第二加热元件16B中的一个上的第一烹饪用具18A相关联的温度传感器的信号。所述信号可以指示与第一烹饪用具18A相关联的温度。例如，温度传感器可以与烹饪用具18A相关联，其中温度传感器(比如炊具温度传感器28)被定位和构造成感测烹饪用具18A自身的温度，和/或温度传感器(比如食物温度传感器30)被定位和构造成感测烹饪用具的内容物的温度。为了确认第一烹饪用具18A位于第一加热元件16A上，控制器52可以进一步构造成基于经由温度传感器28和/或30检测到的电磁干扰来确定第一烹饪用具18A的位置。
图6示出了操作灶具器具(比如示例性灶具12)的示例性方法200。在一些实施例中，控制器52可以被构造成执行方法200的一些或所有步骤。方法200可以初始地包括接收例如来自控制面板或多个控制件中的一个或更多个控制件的信号202。这种信号的接收可以指示基于由与炊具(例如，在特定预期的燃烧器(例如第一加热元件16A)上的第一烹饪用具18A)的特定物品相关联的温度传感器28和/或30测量的测量到的温度来执行闭环控制烹饪操作的期望或意图。在开始这种烹饪操作之前，方法200可以包括确定测量到的温度与预期的 加热元件(例如，如下所述的基于测量到的温度而被控制的加热元件)上的烹饪用具相关联。
例如，在一些实施例中，方法200可以包括步骤204和/或控制器52可以被构造为生成电磁脉冲一测试时段。在一些实施例中，可以通过启用第一加热元件16A(例如，通过向第一加热元件16A的线圈15(图2)供应电流)来生成电磁脉冲一预定时间段。在一些实施例中，预定时间段可以是第一预定时间段，并且生成电磁脉冲还可以包括停用第一加热元件16A，例如，在第一预定时间段之后中断至线圈15的电流一第二预定时间段。因此，测试时段可以包括一个或更多个预定时间段。
在各个实施例中，第二加热元件16B可以在测试时段期间被停用或以低加热水平启用。在这种实施例中，由于来自电磁脉冲的电磁场的瞬时响应，第一烹饪用具18A的位置可以在期望的烹饪操作中在最小的中断或没有中断的情形下被确定或确认。
方法200可以进一步包括在测试时段期间监测与温度传感器相关联的电压或电流的步骤206。例如，可以在测试时段内连续测量与温度传感器28和/或30相关联的电压或电流值。因此，应该明白的是，本文使用的“监测(monitored)”、“监测(monitoring)”或其它同源词包括在一段时间内连续或重复测量或抽样数据，例如电压或电流。在至少一些实施例中，电压或电流是否被监测可以取决于使用何种类型的传感器。例如，在一些实施例中，温度传感器28和/或30可以是热电偶，并且控制器52可以被构造为在测试时段期间监测热电偶两端的电压。作为另一示例，在一些实施例中，温度传感器28和/或30可以是热敏电阻或电阻温度检测器中的一个，并且控制器52可以被构造为在测试时段期间监测通过温度传感器的电流。
方法200还可以包括，在步骤208处，确定温度传感器是否显示或展示来自电磁脉冲的电磁干扰，例如，监测到的电压或电流是否大于预定阈值。如果是，则可以确定烹饪用具位于正确的预期的加热元件(例如第一加热元件16A) 上。例如，在其中监测温度传感器两端的电压的一些实施例中，显示的电磁干扰可以包括大于预定阈值的峰间电压。在这类实施例中，显示的电磁干扰还可以或替代地包括大于预定阈值的最低电压或最高电压。作为另一示例，在其中监测通过温度传感器的电流的一些实施例中，显示的电磁干扰可以包括大于预定阈值的电流。
一旦已确定第一烹饪用具18A与相关联的温度传感器28和/或30位于第一加热元件16A上，方法200可以包括基于来自温度传感器的接收到的信号调节第一加热元件16A的加热水平的步骤210。例如，控制器52可以响应于测量到的温度、例如通过基于来自温度传感器28和/或30的接收到的信号调节第一加热元件16A的加热水平来操作第一加热元件16A。例如，调节加热水平可以包括基于测量到的温度、例如通过使用闭合控制回路(比如PI或PID控制)向第一加热元件16A供应可变功率水平。例如，如本领域通常所理解的，可以将测量到的温度输入到闭合控制回路中，并且可以基于闭合控制回路的输出来调节第一加热元件16A的操作，例如加热水平。
在一些实施例中，例如，在测试时段过去之前，当未检测到电磁干扰时，方法200可以进一步包括步骤212和/或控制器52可以进一步构造为停用第一加热元件16A。在这种情况下，当未检测到电磁干扰时，还可以例如经由用户接口62提供比如错误消息或警告等通知。
如以上提及的，显示的电磁干扰可以包括大于预定阈值的电流。例如，图7示出了示例性温度传感器(在该实施例中为热电偶)的电流响应300，其中通过温度传感器的电流300响应于由第一加热元件16A生成的电磁脉冲而展示电磁干扰。可以基于与预定阈值相比的最大正电流(M P)或最大负电流(M N)中的一个或两个或峰值电流(M P+M N)来确定电磁干扰的存在。图8示出了热电偶(其是炊具温度传感器28或食物温度传感器30的一实施例)对当与热电偶相关联的烹饪用具(例如，第一烹饪用具16A)不在第一加热元件16A上时利用第一加热元件16A生成的电磁脉冲的电流响应。从图8中可以看出，示出了通 过热电偶的背景电流302，其大于零但是显著地小于通过图7中的热电偶的电流300。
如以上提及的，显示的电磁干扰可以包括大于预定阈值的峰间电压和/或大于预定阈值的最低电压或最高电压。例如，图9和10示出了示例性温度传感器(比如热敏电阻或RTD)的电压响应。在图9和10中，温度传感器两端的电压响应于由第一加热元件16A生成的电磁脉冲来展现电磁干扰。可以基于与预定阈值相比的峰间电压(例如，幅值、最高电压或最低电压)中的任何一个或更多个来确定电磁干扰的存在。例如，图9示出了当第一烹饪用具18A在第一加热元件16A上时响应于来自处于低设定的第一加热元件16A的电磁脉冲的温度传感器两端的示例性电压400，其包括幅值A L、最高电压M L和最低电压N L。作为另一示例，图10示出了当第一烹饪用具18A在第一加热元件16A上时响应于来自处于高设定的第一加热元件16A的电磁脉冲的温度传感器两端的示例性电压402，其包括幅值A H、最高电压M H和最低电压N H。
图11和12示出了当第一烹饪用具16A不在第一加热元件16A上时温度传感器对通过第一加热元件16A生成的电磁脉冲的电压响应。在由图11和12所示的示例中，可以看到一些可测量的响应，比如当第一烹饪用具18A靠近但不在第一加热元件16A上时，例如，第一烹饪用具18A可以在紧邻第一加热元件16A的加热元件上。例如，在图11中，响应于由处于低设定的第一加热元件生成的电磁脉冲的电压404的一些变化可以被看到。作为另一示例，响应于由处于高设定的第一加热元件生成的电磁脉冲的电压406的一些变化可以在图12中被看到。尽管图11和12中示出了一些可测量的电压响应，但A L、M L、N L、A H、M H和N H的对应值在图11和12中比在图9和10中显著地较小，这表示第一烹饪用具18A不在第一加热元件16A上。
此书面说明书使用示例来公开本发明，包括最佳模式，并且也使得任何本领域技术人员能够实践本发明，包括制造并使用任何装置或系统以及执行任何所结合的方法。本发明的可专利性范围由权利要求限定，并且可以包括本领域 中的技术人员想到的其它示例。如果这些其它示例包括不与权利要求的字面语言不同的结构元件，或者如果这些其它实例包括与权利要求的字面语言无显著差别的等同结构元件，则这些其它实例意图在权利要求的范围内。

Claims (20)

  1. 一种灶具器具，包括：
    第一加热元件和第二加热元件，所述第一加热元件和第二加热元件定位在所述灶具器具的灶具表面处；以及
    控制器，其可操作地连接至所述第一加热元件和第二加热元件，所述控制器构造为：
    接收来自与位于所述第一加热元件和所述第二加热元件中的一个上的烹饪用具相关联的温度传感器的信号，所述信号指示与所述烹饪用具相关联的温度；
    利用所述第一加热元件生成电磁脉冲一测试时段；
    在所述测试时段期间监测与所述温度传感器相关联的电压或电流；以及
    当与所述温度传感器相关联的所述电压或电流显示来自所述电磁脉冲的电磁干扰时，确定所述烹饪用具位于所述第一加热元件上。
  2. 根据权利要求1所述的灶具器具，其中，所述温度传感器包括热电偶，并且所述控制器构造为在所述测试时段期间监测所述热电偶两端的电压。
  3. 根据权利要求1所述的灶具器具，其中，所述温度传感器包括热敏电阻或电阻温度检测器中的一个，并且所述控制器构造为在所述测试时段期间监测所述温度传感器两端的电压或通过所述温度传感器的电流。
  4. 根据权利要求1所述的灶具器具，其中，所述电磁干扰包括大于预定阈值的峰间电压。
  5. 根据权利要求1所述的灶具器具，其中，所述电磁干扰包括大于预定阈 值的电流。
  6. 根据权利要求1所述的灶具器具，其中，所述电磁干扰包括大于预定阈值的最低电压和最高电压中的一个。
  7. 根据权利要求1所述的灶具器具，其中，所述控制器进一步构造为在所述导体的电压或电流不显示来自所述电磁脉冲的电磁干扰时停用所述第一加热元件并提供通知。
  8. 根据权利要求1所述的灶具器具，其中，生成所述电磁脉冲包括启用所述第一加热元件一预定时间段。
  9. 根据权利要求1所述的灶具器具，其中，生成所述电磁脉冲包括：启用所述第一加热元件一第一预定时间段；以及在所述第一预定时间段之后停用所述第一加热元件一第二预定时间段。
  10. 根据权利要求1所述的灶具器具，其中，所述控制器进一步构造为在确定所述烹饪用具位于所述第一加热元件上之后基于来自所述温度传感器的接收到的信号来调节所述第一加热元件的加热水平。
  11. 一种操作具有第一加热元件和第二加热元件的灶具器具的方法，所述第一加热元件和所述第二加热元件定位在所述灶具器具的烹饪表面处，所述灶具器具同与位于所述第一加热元件和所述第二加热元件中的一个上的烹饪用具相关联的温度传感器操作性地连接，所述方法包括：
    利用所述第一加热元件生成电磁脉冲一测试时段；
    在所述测试时段期间监测与所述温度传感器相关联的电压或电流；以及
    当与所述温度传感器相关联的所述电压或电流显示来自所述电磁脉冲的电 磁干扰时，确定所述烹饪用具位于所述第一加热元件上。
  12. 根据权利要求11所述的方法，其中，所述温度传感器包括热电偶，并且监测的步骤包括在所述测试时段期间监测所述热电偶两端的电压。
  13. 根据权利要求11所述的方法，其中，所述温度传感器包括热敏电阻或电阻温度检测器中的一个，并且监测的步骤包括在所述测试时段期间监测通过所述温度传感器的电流。
  14. 根据权利要求11所述的方法，其中，所述电磁干扰包括大于预定阈值的峰间电压。
  15. 根据权利要求11所述的方法，其中，所述电磁干扰包括大于预定阈值的电流。
  16. 根据权利要求11所述的方法，其中，所述电磁干扰包括大于预定阈值的最低电压和最高电压中的一个。
  17. 根据权利要求11所述的方法，进一步包括当所述导体的电压或电流不显示来自所述电磁脉冲的电磁干扰时，停用所述第一加热元件并提供通知。
  18. 根据权利要求11所述的方法，其中，生成所述电磁脉冲包括启用所述第一加热元件一预定时间段。
  19. 根据权利要求11所述的方法，其中，生成所述电磁脉冲包括：启用所述第一加热元件一第一预定时间段；以及在所述第一预定时间段之后停用所述第一加热元件一第二预定时间段。
  20. 根据权利要求11所述的方法，进一步包括在确定所述烹饪用具位于所述第一加热元件上之后，基于来自所述温度传感器的接收到的信号来调节所述第一加热元件的加热水平，所述信号指示与所述烹饪用具相关联的温度。
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