EP2639511A2 - Procédé destiné au fonctionnement dýun appareil de cuisson avec thermomètre à rôti pouvant être connecté et appareil de cuisson - Google Patents
Procédé destiné au fonctionnement dýun appareil de cuisson avec thermomètre à rôti pouvant être connecté et appareil de cuisson Download PDFInfo
- Publication number
- EP2639511A2 EP2639511A2 EP13157783.5A EP13157783A EP2639511A2 EP 2639511 A2 EP2639511 A2 EP 2639511A2 EP 13157783 A EP13157783 A EP 13157783A EP 2639511 A2 EP2639511 A2 EP 2639511A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- thermometer
- vcc
- supply voltage
- point
- roasting
- 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.)
- Granted
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Classifications
-
- 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
- F24C7/085—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination on baking ovens
Definitions
- the invention relates to a method for operating a cooking appliance with a connectable roasting thermometer and a cooking appliance.
- a one-point frying thermometer has a temperature-dependent NTC resistance (NTC: Negative Temperature Coefficient) sensor.
- NTC Negative Temperature Coefficient
- a detection as to whether or not a one-point probe has been inserted is made by evaluating a voltage drop across a reference resistor of a sensor or evaluation electronics. In this case, a current is determined, which flows through the reference resistor. By a voltage at the resistance of the roasting thermometer or by its sensor and the current, the resistance value and thus the associated temperature can be determined.
- various types of roast thermometer to be connected to the cooking appliance and automatically detected.
- the measured variables are detected by components of the roasting thermometer itself and provided for processing.
- roasting thermometers of different types of roasting thermometers have different types of probes, in particular one probe with one measuring probe and another probe with three measuring probes for temperature detection.
- the type of roast thermometer of the roasting thermometer connected to the cooking appliance can be determined.
- automated control of the cooking appliance may be performed, for example, a temperature sensed by a particular sensor may be determined and used to control a cooking process for a food.
- a user does not have to manually enter what type of grid thermometer type is involved, e.g. different types of roasting thermometers can be used.
- the electrical measured variables are, in particular, voltage values or current values which are determined and evaluated by means of an on-the-roof thermometer or a coupled electronic system.
- roasting thermometer by connecting the roasting thermometer to a probe electronics, one of three terminals is grounded, and another terminal is connected to the supply voltage via a reference resistor, in particular with a switch.
- a reference resistor in particular with a switch.
- its third connection is also connected to the supply voltage via a further reference resistor.
- a one-point frying thermometer in particular, its rear-side section of its jack plug short-circuits the first two connections and thus also grounds the reference resistor of the second connection.
- the supply voltage represents a possibility of comparison to a comparable voltage potential.
- the supply voltage serves in this sense the "supply" of the schematic circuit arrangement explained here. It may or may not be the operating voltage of the cooking appliance or any other external or internal operating voltage.
- Another development is that it is determined on the basis of the first and the second measured variable whether a roasting thermometer is connected at all by determining whether one measured variable is zero or close to zero and the other measured variable essentially corresponds to the supply voltage.
- each of the measurements can be closed in each case to a resistance value of the sensor, which is applied to the switched reference resistor, and to a resistance value of the sensor, which is grounded.
- the calculations are carried out according to the formulas (3 '), (4') or (7 '), (8') listed in the description.
- the cooking appliance may comprise a hob, an oven (oven and / or microwave oven), a steamer or a vacuum cooker.
- the cooking appliance thus has, for example, a socket for inserting a jack plug of the roasting thermometer, the socket having taps for the three connections. While according to a preferred embodiment of the first connection placed on the first tap to ground or laid, the other two taps are placed on a respective associated reference resistor.
- a one-point frying thermometer or a three-point frying thermometer such an arrangement already allows a clear determination of Bratenthermometertyps, ie one-point sensor or three-point sensor by determining the voltage states at the reference resistors to the supply voltage.
- a development is that the processing unit at the second and third terminal each have a switchable to a supply voltage reference variable, wherein the two electrical measurement variables can be tapped on the respective reference variable.
- the reference size is e.g. a reference resistor.
- the reference variables are reference resistors, which is particularly expedient when using measuring sensors which have a temperature-dependent resistance value.
- the reference variables can each be switched to the supply voltage by means of a switch.
- both switches may be closed to determine the type of fryer thermometer, it is possible to make two consecutive measurements to determine the temperature or to determine instantaneous resistance values of the probes, with each of the two measurements opening a different one of the two switches.
- the one-point probe is detected if the supply voltage drops at one reference variable and a substantially lower voltage than the supply voltage drops at the other reference variable.
- a three-point probe is detected if at both reference quantities a voltage drop (e.g., above a predetermined threshold) is determinable compared to the supply voltage.
- the processing unit is designed to determine, based on the first and the second measured variable, whether a roasting thermometer is connected at all, if the one measured variable is zero or close to zero and the other measured variable essentially corresponds to the supply voltage.
- a roast thermometer with three probes and one of the three probes on each terminal together closing star circuit is also proposed, the star circuit is formed without leading out the star point.
- thermometer This allows, in particular in connection with the preferred embodiment of the probe electronics, an embodiment of a three-point frying thermometer with only three connections.
- thermometer Also proposed is a system of such a cooking appliance and at least one such roast thermometer.
- thermometers Such a system allows a free choice of one-point or three-point fryer thermometers, which can be connected to a cooking appliance when needed.
- thermometer A new oven generation is thus able to evaluate a three-point roasting thermometer.
- An automatic detection or distinction is made possible, whether a one- or three-point roasting thermometer is connected to the probe electronics, in particular measuring, evaluation or control electronics, without resorting to further input data of a user or other hardware-technical measures, for Example hardware identifier in the thermometer to be instructed.
- a three-point frying thermometer can be used instead of a one-point frying thermometer.
- the oven electronics are thus enabled to detect and evaluate both a one-point and a three-point fryer thermometer, so that e.g. backward compatibility is enabled with respect to suitable fryer thermometer types.
- the electronics or the evaluation software automatically detects whether a one- or three-point roasting thermometer is plugged in, so that additional user input is unnecessary and thus the user-friendliness can be increased.
- cooking appliances can optionally be offered without a frying thermometer, with a one-point frying thermometer as a cost-effective variant or with a three-point frying thermometer in an upscale version.
- Fig.1 bottom left shows a section of a cooking appliance 101.
- the cooking appliance 101 has a hob and / or a stovepipe and is used for heating or cooking food.
- a roasting thermometer 102 is shown as a measuring device for determining temperatures in food.
- Such a roasting thermometer 102 serves to check a core temperature of a food prepared in or on the cooking appliance 101.
- the illustrated roasting thermometer 102 is a three-point roasting thermometer.
- the roasting thermometer 102 can be connected by means of a connection cable 103 and a plug 104 to a socket 105 of the cooking appliance 101.
- the socket 105 is connected by means of a (multipolar) line 106 to a controller 107 of the cooking device 101. Measurements of the frying thermometer 102 may thus be detected by the controller 107 to determine a temperature of the food.
- a control of the corresponding hob or oven can be made by the controller 107.
- different food preparation programs which require the temperature of the food as an input variable, can be automatically implemented by means of the controller 107.
- the frying thermometer 102 has on the front side a probe, which is designed as a three-point probe 108, which is insertable into a food.
- a first measuring sensor 109, a second measuring sensor 110 and a third measuring sensor 111 are arranged at a distance from the tip of each other.
- the sensors 109 to 111 are designed in particular as NTC resistors and each have a first to third resistance R A , R B and R C depending on the temperature applied to them.
- the first sensor 109 With its one terminal A, the first sensor 109 is connected to a first plug contact 112 of the plug 104. In particular, in the state connected to a cooking device 101, the first measuring sensor 109 is also placed on a base connection or ground 118.
- the second measuring sensor 110 is connected with its one terminal B to a second plug contact 113.
- the third measuring sensor 111 is connected with its one terminal C to a third plug contact 114.
- the other connections of each of the three sensors 109 to 111 together with a node 124 (also referred to as star point) connected.
- the socket 105 has first to third socket contacts 115, 116, 117, which are connected via the line 106 to the controller 107.
- a section of the controller 107 is shown, wherein components of a probe electronics 119 are shown as a schematic circuit. Also shown schematically are the circuit components of the roasting thermometer 102 with the first to third resistance values R A , R B and R C, respectively.
- the first terminal A to which the first sensor 109 is applied, is connected to ground 118 via the probe electronics 119.
- the second terminal B, to which the second sensor 110 is applied, can be connected in the probe electronics 119 via a reference resistor 120 with a resistance R RefB (also referred to as R 120 ) and a switch 122 with a supply voltage Vcc.
- the third terminal C, to which the third sensor 111 is applied, can be connected in the probe electronics 119 via a reference resistor 121 with a resistance R RefC (also referred to as R 121 ) and a switch 123 with the supply voltage Vcc.
- a voltage U RA results at the connection A, at the connection B a voltage U RB results and at the connection C a voltage U RC results.
- voltage values for example, can be measured at four points as electrical measured quantities, which results in the voltage drop at the resistor 120 and at the resistor 121.
- a current can also be determined with the resistance values R RefC and R RefC known in the probe electronics 119.
- the voltage drop across the resistor 120 results according to Fig.1 to UR RefB -U RB and the voltage drop across the resistor 121 results according to UR RfC -U RC .
- the voltage values are used to make an evaluation as to whether a roasting thermometer 102 is connected to the cooking appliance 101 at all. In the event that a roasting thermometer 102 is connected, it can also be automatically determined by means of the voltage values for different switching states of the first and second switches 122, 123, which has the roasting thermometer 102 for a roasting thermometer type. This can in particular be determined whether it is a one-point frying thermometer with a one-point probe or around - as in Fig.1 shown - a three-point roasting thermometer 102 with a three-point probe acts.
- a first case with infected three-point probe for the probe electronics 119 as control electronics corresponds to the representation according to Fig.1 bottom right.
- the first voltage path with the first terminal A is grounded.
- the resistance values R RefB , R RefC are the same at the two reference resistors 120, 121 can be, to voltage drops.
- U 121 is the voltage drop across the reference resistor 121
- U 120 is the voltage drop across the reference resistor 120.
- thermometer 102 is connected to a three-point probe if both the voltage U 120 across the first reference resistor 120 and the voltage U 121 across the second reference resistor 121 is less than the value of the supply voltage Vcc.
- the probe itself as well as the circuit can have a connection to ground.
- FIG Fig.2 A second case with an attached one-point frying thermometer 201 with a one-point probe, where there is only one probe with its resistance R A , is in FIG Fig.2 shown.
- the one-point fryer thermometer 201 is connected, for example, via a mono jack plug, which shorts the contacts of the first two terminals A and B of the jack. As a result, the reference resistor 120 is grounded.
- the one-point probe can be identified according to the condition: Vcc to R 120 & & U 121 ⁇ Vcc ,
- the three-point frying thermometer 102 has internally on the three sensors 109 to 111, which are designed in particular as NTC resistors to the core temperature of the food - in contrast to the one-point frying thermometer - not just one measurement point, but three to record spatially differently placed measuring points.
- the placement of the NTC resistors is in Fig.1 shown schematically on the top left.
- the node or star point 124 itself is not connected to the evaluation electronics or not led out of the sensor.
- One of the three contact lines, in this case the first contact or terminal A, is earthed in particular for reasons of safety, in order to prevent the sensor from being live in the event of a fault.
- the NTC resistors are connected in a star connection within the frying thermometer 102, as shown schematically in FIG Fig.1 is shown. Such an interconnection of the NTC resistors requires at first glance a contacting of the frying thermometer with four lines, that is, a fourth line at the star point 124, which interconnects the three resistors. According to the described embodiment, however, a star connection without explicit lead out of the star point 124 can be realized.
- the drive or probe electronics 119 itself has the two signal paths internally, which can be separately activated or deactivated via the switches 122, 123. This is schematically in Figure 4 shown.
- ADC channels ADC: analog-digital converter
- the following table with an assignment of signal names to ADC channels shows the four signals or voltages that can be determined with the aid of the probe electronics 119 (comprising, for example, the mentioned ADC converter):
- UR ref between the reference resistor 120 and the switch 122 see FIG. Fig.1
- U RC between the reference resistor 121 and the resistor R C
- U RB between the reference resistor 120 and the resistor R B
- the two signal paths are activated or deactivated by means of the switches 122 and 123, for example separately of one another or simultaneously.
- the switches 122 or 123 is closed during the measurement of the resistance values R A , R B and R C.
- signals detected by the ADC converter can be stored at the aforementioned tapping points.
- Figure 5 shows a schematic (substitute) circuit diagram in which the switch 123 is open and the switch 122 is closed. For clarity's sake is in Figure 5 the switch 123 is not shown.
- R Ref denotes a reference resistance value on the assumption that the two resistance values R RefB , R RefC of the two reference resistors 120, 121 are equal.
- Figure 6 shows another (substitute) circuit diagram in which the switch 122 is open and the switch 123 is closed. For clarity's sake is in Figure 6 the switch 122 is not shown.
- Equation (5) U R B U R re fC - U R C * R re ⁇ f
- R C U R C - U R B U R re fC - U R C * R re ⁇ f
- the resistance R A of the first sensor is determined by both paths. This allows a plausibility check of the values for the first sensor or its resistance R A.
- the probe electronics 119 be arranged in the central controller 107 of the cooking appliance 101.
- the probe electronics 119 can also be formed independently of the central controller 107 and stored in the cooking appliance 101 or even externally, e.g. be arranged in the roasting thermometer 102.
- the principle is not limited to a three-point frying thermometer 102, but also to frying thermometers with e.g. additional probes applicable.
- NTC resistors are described as sensors in the roasting thermometer. However, other types of sensors can be used.
- Cooking appliance 102 Three-point Bratenthermometer 103 connection cable 104 plug 105 Rifle 106 management 107 control 108 Three-point probe 109 first sensor 110 second sensor 111 third sensor 112 first plug contact 113 second plug contact 114 third plug contact 115 first socket contact 116 second socket contact 117 third socket contact 118 Ground or reference potential for supply voltage 119 probe electronics 120 first reference resistance 121 second reference resistance 122 first switch 123 second switch 124 star point 201
- One-point Bratenthermometer A first connection B second connection C third connection R A Resistance value of the first sensor R B Resistance value of the second sensor R C Resistance value of the third sensor R RefB Resistance value of the first reference resistor R RefC Resistance value of the second reference resistor U RA Voltage at the first connection or via the first sensor U RB Voltage at the second connection U RC Voltage at the third connection U Ref tension UR efC tension UR ref tension UR RefC tension
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Frying-Pans Or Fryers (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL13157783T PL2639511T3 (pl) | 2012-03-16 | 2013-03-05 | Sposób eksploatacji urządzenia do gotowania z podłączanym termometrem do pieczenia i urządzenie do gotowania |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012204225A DE102012204225A1 (de) | 2012-03-16 | 2012-03-16 | Verfahren zum Betreiben eines Gargeräts mit anschließbarem Bratenthermometer und Gargerät |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP2639511A2 true EP2639511A2 (fr) | 2013-09-18 |
| EP2639511A3 EP2639511A3 (fr) | 2018-04-11 |
| EP2639511B1 EP2639511B1 (fr) | 2020-05-06 |
Family
ID=47779975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13157783.5A Active EP2639511B1 (fr) | 2012-03-16 | 2013-03-05 | Procédé destiné au fonctionnement d'un appareil de cuisson avec thermomètre à rôti pouvant être connecté et appareil de cuisson |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2639511B1 (fr) |
| DE (1) | DE102012204225A1 (fr) |
| ES (1) | ES2792067T3 (fr) |
| PL (1) | PL2639511T3 (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220082265A1 (en) * | 2020-09-14 | 2022-03-17 | Haier Us Appliance Solutions, Inc. | Adaptable port for an oven appliance |
| US20240264010A1 (en) * | 2023-02-02 | 2024-08-08 | Haier Us Appliance Solutions, Inc. | Cooking accessory plug including one or more unique resistive values |
| US12449317B2 (en) | 2023-01-26 | 2025-10-21 | Haier Us Appliance Solutions, Inc. | Adaptable cooking appliance circuitry for controlling cooking accessories |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE469857B (sv) * | 1992-02-07 | 1993-09-27 | Electrolux Ab | Temperaturprob avsedd att införas i en matvara som skall värmebehandlas jämte en ugn för behandling av matvaror innefattande en temperaturprob |
| DE10061821C2 (de) * | 2000-12-12 | 2002-11-28 | Rational Ag | Verfahren zum Führen eines Garprozesses mit einem Garprozeßfühler |
| DE102005046012B3 (de) * | 2005-09-26 | 2006-10-05 | Miele & Cie. Kg | Antennenanordnung für den Signalaustausch zwischen einer Sende- und einer Empfangseinrichtung eines Haushaltsgeräts mit einem beheizbaren Behandlungsraum |
| US20090188396A1 (en) * | 2007-08-06 | 2009-07-30 | Hofmann Matthias C | Oven with wireless temperature sensor for use in monitoring food temperature |
-
2012
- 2012-03-16 DE DE102012204225A patent/DE102012204225A1/de not_active Withdrawn
-
2013
- 2013-03-05 PL PL13157783T patent/PL2639511T3/pl unknown
- 2013-03-05 ES ES13157783T patent/ES2792067T3/es active Active
- 2013-03-05 EP EP13157783.5A patent/EP2639511B1/fr active Active
Non-Patent Citations (1)
| Title |
|---|
| None |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220082265A1 (en) * | 2020-09-14 | 2022-03-17 | Haier Us Appliance Solutions, Inc. | Adaptable port for an oven appliance |
| US11747023B2 (en) * | 2020-09-14 | 2023-09-05 | Haier Us Appliance Solutions, Inc. | Adaptable port for an oven appliance |
| US12449317B2 (en) | 2023-01-26 | 2025-10-21 | Haier Us Appliance Solutions, Inc. | Adaptable cooking appliance circuitry for controlling cooking accessories |
| US20240264010A1 (en) * | 2023-02-02 | 2024-08-08 | Haier Us Appliance Solutions, Inc. | Cooking accessory plug including one or more unique resistive values |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102012204225A1 (de) | 2013-09-19 |
| PL2639511T3 (pl) | 2020-10-19 |
| ES2792067T3 (es) | 2020-11-06 |
| EP2639511B1 (fr) | 2020-05-06 |
| EP2639511A3 (fr) | 2018-04-11 |
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