CN204157088U - Cooking utensils heating device with metal pot courage detects function - Google Patents
Cooking utensils heating device with metal pot courage detects function Download PDFInfo
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- CN204157088U CN204157088U CN201420607317.7U CN201420607317U CN204157088U CN 204157088 U CN204157088 U CN 204157088U CN 201420607317 U CN201420607317 U CN 201420607317U CN 204157088 U CN204157088 U CN 204157088U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 73
- 239000002184 metal Substances 0.000 title claims abstract description 43
- 238000010411 cooking Methods 0.000 title 1
- 230000010355 oscillation Effects 0.000 claims abstract description 65
- 238000001514 detection method Methods 0.000 claims abstract description 48
- 239000013078 crystal Substances 0.000 claims description 11
- 238000007689 inspection Methods 0.000 description 11
- 230000003321 amplification Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Abstract
The utility model discloses a stove heating device with a metal pot liner detection function, which comprises a stove seat, a heater, a controlled LC oscillation module for detecting whether the metal pot liner is placed on the stove seat or not, and a heating control module for controlling the firepower of the heater to be reduced when no metal pot liner is detected on the stove seat, the controlled LC oscillation module driving signal input end is electrically connected with an oscillation driving module, the amplitude signal detection end is electrically connected with a voltage detection module for detecting whether the output voltage value of the controlled LC oscillation module deviates from a preset value so as to facilitate the heating control module to judge whether a metal pot container is placed on the cooker seat, the oscillation control signal input end of the oscillation driving module is connected with the oscillation control signal output end of the heating control module, and the voltage detection signal output end of the voltage detection module is electrically connected with the voltage detection signal input end of the heating control module. The present case simple structure easily realizes, detects the accuracy, and safe and reliable practicality is good.
Description
[technical field]
The utility model relates to a kind of kitchen range for heating device with metal pan courage measuring ability.
[background technology]
At present, general kitchen range are as electromagnetic oven inspection pot mode mainly current transformer inspection pot and impulse circuit inspection two kinds, pot, and its principle is as follows respectively:
1, pot examined by current transformer, and it adopts inspection pot transformer to carry out Current Mutual Inductance, the voltage synchronously changed with primary current size is induced through inspection pot transformer secondary output, deliver on CPU corresponding function pin and detect, when without pan, it is long that drum and resonant capacitance shake the time, energy attenuation is slow, flow through inspection pot transformer primary current less, inspection pot transformer-secondary voltage is just low, CPU judges without pot, when there being pan, owing to there being adding of the pan of suitable material, concussion damping between drum and resonant capacitance strengthens, energy attenuation is fast, examining the electric current of pot primary change greatly, the voltage gone out at secondary induction is large, CPU judges there is pot.But this mode adopting inspection pot transformer to examine pot has circuit structure complexity, judges inaccurate feature.
2, pulse inspection pot mode adopts pulse generating circuit and pulse number comparator, during without pan, the time of freely shaking of drum and resonant capacitance is long, energy attenuation is long, and within the unit interval, pulse number is few, when there being pan, because the damping of pan adds, energy attenuation is very fast, and in the unit interval, the number of pulse is just than without how a lot of during pan.But this pulse inspection pot mode is very strict to circuit design requirements, and judge that difficulty is large, it is implemented costly.
Separately, above-mentioned two kinds of inspection pot modes are all unfavorable for using in independent kitchen range beyond electromagnetic oven.
Therefore, be necessary to solve as above problem.
[utility model content]
The utility model overcomes the deficiency of above-mentioned technology, provides a kind of kitchen range for heating device with metal pan courage measuring ability, and its structure is simple and easy to realize, and detects accurately.
For achieving the above object, the utility model have employed following technical proposal:
A kind of kitchen range for heating device with metal pan courage measuring ability, include the range base 100 for placing metal pan courage, described range base 100 is provided with heater 1, alternating magnetic field is produced to detect the controlled LC oscillation module 2 whether range base 100 being placed with metal pan courage for vibrating, and for detect on range base 100 without during metal pan courage control heater 1 firepower reduce heating control module 3, described controlled LC oscillation module 2 driving signal input is electrically connected with on vibration driver module 4 and amplitude signal test side and is electrically connected with whether depart from preset value so that heating control module 3 judges whether range base 100 is placed with the voltage detection module 5 of metal pan courage for detecting controlled LC oscillation module 2 output voltage values, described vibration driver module 4 oscillation control signal input is connected with heating control module 3 oscillation control signal output, described voltage detection module 5 voltage detection signal output is electrically connected with heating control module 3 voltage detection signal input.
Controlled LC oscillation module 2 as above comprises resistance R2, inductance coil L1 and electric capacity C3, described resistance R2 one end is connected with vibration driver module 4 drive singal output as controlled LC oscillation module 2 driving signal input, be connected with voltage detection module 5 voltage detection signal input as controlled LC oscillation module 2 amplitude signal test side after the resistance R2 other end is connected with described inductance coil L1 one end, electric capacity C3 one end, ground connection after the described inductance coil L1 other end is connected with the electric capacity C3 other end.
Vibration driver module 4 as above includes crystal oscillator chip Y1, one CD4069 inverter U1, 2nd CD4069 inverter U2, resistance R1, resistance R7 ~ R8, electric capacity C1 ~ C2, and NPN triode Q1, described resistance R7 one end is connected with described heating control module 3 oscillation control signal output as vibration driver module 4 oscillation control signal input, the resistance R7 other end is connected with described NPN triode Q1 base stage, and NPN triode Q1 collector electrode is by resistance R8 and resistance R1 one end, one CD4069 inverter U1 positive input, crystal oscillator chip Y1 one end, and electric capacity C1 one end is connected, NPN triode Q1 emitter and the electric capacity C1 other end, ground connection after electric capacity C2 one end is connected, the electric capacity C2 other end and the crystal oscillator chip Y1 other end, one CD4069 inverter U1 inverse output terminal, the resistance R1 other end, and the 2nd CD4069 inverter U2 positive input be connected, described 2nd CD4069 inverter U2 positive source input external power supply VCC and power cathode input end grounding, the 2nd CD4069 inverter U2 inverse output terminal is connected with described controlled LC oscillation module 2 driving signal input as vibration driver module 4 drive singal output.
Described voltage detection module 5 comprises and is connected electrically in detecting circuit 51 between described controlled LC oscillation module 2 and heating control module 3 and voltage signal amplifying circuit 52 in turn.
Detecting circuit 51 as above comprises electric capacity C4 ~ C5, resistance R3, and diode D1 ~ D2, described voltage signal amplifying circuit 52 comprises resistance R4 ~ R6, and have amplifier chip LM324, described electric capacity C4 one end is connected with described controlled LC oscillation module 2 amplitude signal test side as voltage detection module 5 voltage detection signal input, the electric capacity C4 other end and diode D1 negative pole, diode D2 positive pole is connected, described diode D1 positive pole and resistance R3 one end, electric capacity C5 one end, ground connection after resistance R5 one end is connected, described amplifier chip LM324 positive source input external power supply VCC and power cathode input end grounding, the described resistance R3 other end and diode D2 negative pole, be connected with amplifier chip LM324 positive input by resistance R4 after the electric capacity C5 other end is connected, the described resistance R5 other end and resistance R6 one end, amplifier chip LM324 reverse input end is connected, be connected with described heating control module 3 voltage detection signal input as voltage detection module 5 voltage detection signal output after the described resistance R6 other end is connected with amplifier chip LM324 signal output part.
As mentioned above, described range base 100 is gas-cooker seat, described heater 1 is burner for gas stove, described heating control module 3 comprises controller and the electronic gas valve for adjusting gas stove burner firepower size, and described electronic gas valve control signal output is connected with described controller control signal input; Or described range base 100 is electric cooker seat, described heater 1 is heating plate of electric cooker, and described heating plate of electric cooker control signal input is electrically connected with described heating control module 3 control signal output; Or described range base 100 is electromagnetic oven seat, described heater 1 is heating disk of electromagnetic oven, and heating disk of electromagnetic oven control signal input is electrically connected with described heating control module 3 control signal output.
Compared with prior art, the beneficial effects of the utility model are:
1, induction type detects, it is easy to detect, when without metal pan courage, output voltage when heating control module detects that controlled LC oscillation module vibrates by voltage detection module, is unique, can at particular voltage level be designated as, and when the output voltage values detected is less than at particular voltage level, show range base to placed metal pan courage, heating control module without during metal pan courage control heater firepower reduce, its safe and reliable practicality is good.
2, separated exciting vibration drived control mode is adopted, its control is convenient, flexible, vibration driver module is connected with between controlled LC oscillation module driving signal input and heating control module, be convenient to controlled LC oscillation module and carry out separated exciting vibration under the drive singal that frequency is certain, so that the comparing of output voltage during controlled LC oscillation module real oscillation on amplitude signal test side and preset value.
3, detecting circuit and voltage signal amplifying circuit is connected with in turn between controlled LC oscillation module amplitude signal test side and heating control module, export after carrying out filter rectification voltage stabilizing by detecting circuit, effective output voltage nursing one's health out amplitude signal test side when controlled LC oscillation module vibrates, carry out voltage amplification by voltage signal amplifying circuit, be convenient to detect accurately output voltage.
4, the utility model does not need to adopt transformer circuit or pulse number comparator, has structure and is simple and easy to realize, judge accurate feature.
[accompanying drawing explanation]
Fig. 1 is structure chart of the present utility model
Fig. 2 is circuit diagram of the present utility model.
[embodiment]
The utility model feature and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that the understanding of technical staff of the same trade:
As shown in Figure 1-2, a kind of kitchen range for heating device with metal pan courage measuring ability, include the range base 100 for placing metal pan courage, described range base 100 is provided with heater 1, alternating magnetic field is produced to detect the controlled LC oscillation module 2 whether range base 100 being placed with metal pan courage for vibrating, and for detect on range base 100 without during metal pan courage control heater 1 firepower reduce heating control module 3, described controlled LC oscillation module 2 driving signal input is electrically connected with on vibration driver module 4 and amplitude signal test side and is electrically connected with whether depart from preset value so that heating control module 3 judges whether range base 100 is placed with the voltage detection module 5 of metal pan courage for detecting controlled LC oscillation module 2 output voltage values, described vibration driver module 4 oscillation control signal input is connected with heating control module 3 oscillation control signal output, described voltage detection module 5 voltage detection signal output is electrically connected with heating control module 3 voltage detection signal input.
Described controlled LC oscillation module 2 comprises resistance R2, inductance coil L1 and electric capacity C3, described resistance R2 one end is connected with vibration driver module 4 drive singal output as controlled LC oscillation module 2 driving signal input, be connected with voltage detection module 5 voltage detection signal input as controlled LC oscillation module 2 amplitude signal test side after the resistance R2 other end is connected with described inductance coil L1 one end, electric capacity C3 one end, ground connection after the described inductance coil L1 other end is connected with the electric capacity C3 other end.
Described vibration driver module 4 includes crystal oscillator chip Y1, one CD4069 inverter U1, 2nd CD4069 inverter U2, resistance R1, resistance R7 ~ R8, electric capacity C1 ~ C2, and NPN triode Q1, described resistance R7 one end is connected with described heating control module 3 oscillation control signal output as vibration driver module 4 oscillation control signal input, the resistance R7 other end is connected with described NPN triode Q1 base stage, and NPN triode Q1 collector electrode is by resistance R8 and resistance R1 one end, one CD4069 inverter U1 positive input, crystal oscillator chip Y1 one end, and electric capacity C1 one end is connected, NPN triode Q1 emitter and the electric capacity C1 other end, ground connection after electric capacity C2 one end is connected, the electric capacity C2 other end and the crystal oscillator chip Y1 other end, one CD4069 inverter U1 inverse output terminal, the resistance R1 other end, and the 2nd CD4069 inverter U2 positive input be connected, described 2nd CD4069 inverter U2 positive source input external power supply VCC and power cathode input end grounding, the 2nd CD4069 inverter U2 inverse output terminal is connected with described controlled LC oscillation module 2 driving signal input as vibration driver module 4 drive singal output.
Voltage detection module 5 as above comprises and is connected electrically in detecting circuit 51 between described controlled LC oscillation module 2 and heating control module 3 and voltage signal amplifying circuit 52 in turn.
Detecting circuit 51 as above comprises electric capacity C4 ~ C5, resistance R3, and diode D1 ~ D2, described voltage signal amplifying circuit 52 comprises resistance R4 ~ R6, and have amplifier chip LM324, described electric capacity C4 one end is connected with described controlled LC oscillation module 2 amplitude signal test side as voltage detection module 5 voltage detection signal input, the electric capacity C4 other end and diode D1 negative pole, diode D2 positive pole is connected, described diode D1 positive pole and resistance R3 one end, electric capacity C5 one end, ground connection after resistance R5 one end is connected, described amplifier chip LM324 positive source input external power supply VCC and power cathode input end grounding, the described resistance R3 other end and diode D2 negative pole, be connected with amplifier chip LM324 positive input by resistance R4 after the electric capacity C5 other end is connected, the described resistance R5 other end and resistance R6 one end, amplifier chip LM324 reverse input end is connected, be connected with described heating control module 3 voltage detection signal input as voltage detection module 5 voltage detection signal output after the described resistance R6 other end is connected with amplifier chip LM324 signal output part.
As mentioned above, described range base 100 is gas-cooker seat, described heater 1 is burner for gas stove, described heating control module 3 comprises controller and the electronic gas valve for adjusting gas stove burner firepower size, and described electronic gas valve control signal output is connected with described controller control signal input; Or described range base 100 is electric cooker seat, described heater 1 is heating plate of electric cooker, and described heating plate of electric cooker control signal input is electrically connected with described heating control module 3 control signal output; Or described range base 100 is electromagnetic oven seat, described heater 1 is heating disk of electromagnetic oven, and heating disk of electromagnetic oven control signal input is electrically connected with described heating control module 3 control signal output.
Operation principle and the process of this case are as follows:
On controlled LC oscillation module 2, inductance coil L1 is the transmitting coil producing eddy current, is also the receiving coil receiving eddy current.
During work, heating control module 3 opens vibration driver module 4, on vibration driver module 4, crystal oscillating circuit exports the drive singal of certain frequency, for controlled LC oscillation module 2 provides an alternating current, alternating current forms alternating magnetic field through inductance coil L1, when above controlled LC oscillation module 2 without metal pan courage time, output voltage when heating control module 3 detects that controlled LC oscillation module 2 vibrates by voltage detection module 5, is unique, can be designated as at particular voltage level, and when there being metal pan courage above controlled LC oscillation module 2, magnetic field now around inductance coil L1 can produce eddy current on metal pan courage, vortex flow on metal pan courage forms again magnetic field to airborne spread, the magnetic field returned can be received by inductance coil L1, the equivalent inductance of inductance coil L1 is caused to change, thus make amplitude signal test side output voltage values depart from particular voltage level, heating control module 3 is delivered to after the detection and signal amplification of voltage detection module 5, after heating control module 3 learns that voltage changes, control control heater 1 firepower reduce or control to close heater 1.
As mentioned above, as optimal enforcement mode, the frequency values of crystal oscillating circuit output drive signal on vibration driver module 4 is made to equal the resonant frequency value of controlled LC oscillation module 2 during design, like this when above controlled LC oscillation module 2 without metal pan courage time, controlled LC oscillation module 2 carries out resonance, the impedance that loop presents is maximum, and during resonance, on controlled LC oscillation module 2 amplitude signal test side, output voltage is also maximum, and when there being metal pan courage above controlled LC oscillation module 2, magnetic field now around inductance coil L1 can produce eddy current on metal pan courage, vortex flow on metal pan courage forms again magnetic field to airborne spread, the magnetic field returned can be received by inductance coil L1, the equivalent inductance of inductance coil L1 is caused to change, cause the off resonance of controlled LC oscillation module 2, thus the output voltage making amplitude signal test side detect reduces, heating control module 3 is delivered to after the detection and signal amplification of voltage detection module 5, after heating control module 3 learns that voltage changes, control control heater 1 firepower reduce or control to close heater 1.
As mentioned above, as optimal enforcement mode, when the difference that controlled LC oscillation module 2 amplitude signal test side output voltage values departs from particular voltage level exceedes certain limit, heating control module 3 just judges without metal pan courage on range base 100, and just control heater 1 firepower reduces or controls to close heater 1.
As mentioned above, what this case was protected is a kind of kitchen range for heating device with metal pan courage measuring ability, and all technical schemes identical with this case structure all should be shown for falling in the protection range of this case.
Claims (8)
1. one kind has the kitchen range for heating device of metal pan courage measuring ability, it is characterized in that the range base (100) included for placing metal pan courage, described range base (100) is provided with heater (1), alternating magnetic field is produced to detect the controlled LC oscillation module (2) whether range base (100) being placed with metal pan courage for vibrating, and for the upper heating control module (3) without control heater (1) firepower reduction during metal pan courage of range base (100) being detected, described controlled LC oscillation module (2) driving signal input is electrically connected with on vibration driver module (4) and amplitude signal test side and is electrically connected with whether depart from preset value so that heating control module (3) judges whether range base (100) is placed with the voltage detection module (5) of metal pan courage for detecting controlled LC oscillation module (2) output voltage values, described vibration driver module (4) oscillation control signal input is connected with heating control module (3) oscillation control signal output, described voltage detection module (5) voltage detection signal output is electrically connected with heating control module (3) voltage detection signal input.
2. a kind of kitchen range for heating device with metal pan courage measuring ability according to claim 1, it is characterized in that described controlled LC oscillation module (2) comprises resistance R2, inductance coil L1, and electric capacity C3, described resistance R2 one end is connected with vibration driver module (4) drive singal output as controlled LC oscillation module (2) driving signal input, the resistance R2 other end and described inductance coil L1 one end, be connected with voltage detection module (5) voltage detection signal input as controlled LC oscillation module (2) amplitude signal test side after electric capacity C3 one end is connected, ground connection after the described inductance coil L1 other end is connected with the electric capacity C3 other end.
3. a kind of kitchen range for heating device with metal pan courage measuring ability according to claim 1, it is characterized in that described vibration driver module (4) includes crystal oscillator chip Y1, one CD4069 inverter U1, 2nd CD4069 inverter U2, resistance R1, resistance R7 ~ R8, electric capacity C1 ~ C2, and NPN triode Q1, described resistance R7 one end is connected with described heating control module (3) oscillation control signal output as vibration driver module (4) oscillation control signal input, the resistance R7 other end is connected with described NPN triode Q1 base stage, NPN triode Q1 collector electrode is by resistance R8 and resistance R1 one end, one CD4069 inverter U1 positive input, crystal oscillator chip Y1 one end, and electric capacity C1 one end is connected, NPN triode Q1 emitter and the electric capacity C1 other end, ground connection after electric capacity C2 one end is connected, the electric capacity C2 other end and the crystal oscillator chip Y1 other end, one CD4069 inverter U1 inverse output terminal, the resistance R1 other end, and the 2nd CD4069 inverter U2 positive input be connected, described 2nd CD4069 inverter U2 positive source input external power supply VCC and power cathode input end grounding, 2nd CD4069 inverter U2 inverse output terminal is connected with described controlled LC oscillation module (2) driving signal input as vibration driver module (4) drive singal output.
4. a kind of kitchen range for heating device with metal pan courage measuring ability according to claim 1, is characterized in that described voltage detection module (5) comprises and is connected electrically in detecting circuit (51) between described controlled LC oscillation module (2) and heating control module (3) and voltage signal amplifying circuit (52) in turn.
5. a kind of kitchen range for heating device with metal pan courage measuring ability according to claim 4, it is characterized in that described detecting circuit (51) comprises electric capacity C4 ~ C5, resistance R3, and diode D1 ~ D2, described voltage signal amplifying circuit (52) comprises resistance R4 ~ R6, and have amplifier chip LM324, described electric capacity C4 one end is connected with described controlled LC oscillation module (2) amplitude signal test side as voltage detection module (5) voltage detection signal input, the electric capacity C4 other end and diode D1 negative pole, diode D2 positive pole is connected, described diode D1 positive pole and resistance R3 one end, electric capacity C5 one end, ground connection after resistance R5 one end is connected, described amplifier chip LM324 positive source input external power supply VCC and power cathode input end grounding, the described resistance R3 other end and diode D2 negative pole, be connected with amplifier chip LM324 positive input by resistance R4 after the electric capacity C5 other end is connected, the described resistance R5 other end and resistance R6 one end, amplifier chip LM324 reverse input end is connected, the described resistance R6 other end is connected with described heating control module (3) voltage detection signal input as voltage detection module (5) voltage detection signal output after being connected with amplifier chip LM324 signal output part.
6. a kind of kitchen range for heating device with metal pan courage measuring ability according to claim 1-5 any one, it is characterized in that described range base (100) is for gas-cooker seat, described heater (1) is burner for gas stove, described heating control module (3) comprises controller and the electronic gas valve for adjusting gas stove burner firepower size, and described electronic gas valve control signal output is connected with described controller control signal input.
7. a kind of kitchen range for heating device with metal pan courage measuring ability according to claim 1-5 any one, it is characterized in that described range base (100) is for electric cooker seat, described heater (1) is heating plate of electric cooker, and described heating plate of electric cooker control signal input is electrically connected with described heating control module (3) control signal output.
8. a kind of kitchen range for heating device with metal pan courage measuring ability according to claim 1-5 any one, it is characterized in that described range base (100) is for electromagnetic oven seat, described heater (1) is heating disk of electromagnetic oven, and heating disk of electromagnetic oven control signal input is electrically connected with described heating control module (3) control signal output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420607317.7U CN204157088U (en) | 2014-10-20 | 2014-10-20 | Cooking utensils heating device with metal pot courage detects function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420607317.7U CN204157088U (en) | 2014-10-20 | 2014-10-20 | Cooking utensils heating device with metal pot courage detects function |
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| CN204157088U true CN204157088U (en) | 2015-02-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104302029A (en) * | 2014-10-20 | 2015-01-21 | 华帝股份有限公司 | Novel cooking utensils heating device with metal pot courage detects function |
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2014
- 2014-10-20 CN CN201420607317.7U patent/CN204157088U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104302029A (en) * | 2014-10-20 | 2015-01-21 | 华帝股份有限公司 | Novel cooking utensils heating device with metal pot courage detects function |
| CN104302029B (en) * | 2014-10-20 | 2016-03-02 | 华帝股份有限公司 | Novel cooking utensils heating device with metal pot courage detects function |
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