CN206096986U - Heating device and electric saucepan - Google Patents
Heating device and electric saucepan Download PDFInfo
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- CN206096986U CN206096986U CN201621044115.1U CN201621044115U CN206096986U CN 206096986 U CN206096986 U CN 206096986U CN 201621044115 U CN201621044115 U CN 201621044115U CN 206096986 U CN206096986 U CN 206096986U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 163
- 238000001514 detection method Methods 0.000 claims abstract description 121
- 238000002955 isolation Methods 0.000 claims description 24
- 238000004804 winding Methods 0.000 claims description 18
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000009467 reduction Effects 0.000 claims description 2
- 230000009246 food effect Effects 0.000 abstract description 5
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract 2
- 238000010411 cooking Methods 0.000 description 21
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010794 food waste Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005355 Hall effect Effects 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- HPDFFVBPXCTEDN-UHFFFAOYSA-N copper manganese Chemical group [Mn].[Cu] HPDFFVBPXCTEDN-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a heating device and electric saucepan, this heating device includes: the controlled terminal that heating circuit, main control chip and switch circuit, heating circuit pass through switch circuit links to each other with the power, and switch circuit's control end links to each other with main control chip, still include: current detection circuit for test input is to heating circuit's electric current, and sends first testing result for main control chip. Through the utility model discloses the scheme can make the influence that does not receive the commercial power voltage stabilization condition in the heating process to can in time judge heating device's the trouble condition, guarantee the culinary art effect of food, reduce the potential safety hazard.
Description
Technical Field
The utility model relates to a culinary art product automatically controlled technical field especially relates to a heating device and electric saucepan.
Background
At present, various electronic cooking products have been widely used in people's daily life, such as electric stewpots. However, many electronic stewpots are heated or not by using a single chip microcomputer to control the on-off of a relay, and cooking is performed according to a certain program flow. The heating control circuit of such products usually only has a voltage detection circuit for detecting whether the mains voltage is stable, as shown in fig. 1. Some products do not even have a voltage detection circuit, as shown in fig. 2. These two typical heating control circuits have the following problems: under the condition that mains voltage is too high or too low, the heating control circuit of fig. 1 can not detect whether the culinary art product is not heated or is heating always in the very first time, can not judge the trouble of heating control circuit promptly, and this can cause food waste to produce the potential safety hazard. The heating control circuit of fig. 2 cannot judge the most basic voltage stabilization condition, and when the mains voltage is too high, the heating power of the cooking product is very high; when the mains voltage is too low, the heating power of the cooking product is low, which seriously affects the effect of cooking food, is either too mushy or not cooked, and reduces the life of the cooking product itself.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a heating device and electric stewpot can make not receive the influence of the mains voltage stable condition among the heating process to can in time judge heating device's trouble condition, guarantee the culinary art effect of food, reduce the potential safety hazard.
In order to achieve the purpose, the utility model provides a heating device, which comprises a heating circuit, a main control chip and a switch circuit, wherein the heating circuit is connected with a power supply through a controlled end of the switch circuit, and a control end of the switch circuit is connected with the main control chip; further comprising:
the current detection circuit is used for detecting the current input to the heating circuit and sending a first detection result to the main control chip; the main control chip is used for monitoring the magnitude of the current input to the heating circuit according to the first detection result and adjusting the switching period of the switching circuit, wherein the switching period is increased along with the reduction of the current of the heating circuit.
Alternatively,
the main control chip is used for detecting whether a closing instruction is sent to the switching circuit and generating a second detection result; and judging the fault of the heating device according to the second detection result.
Optionally, the fault determination comprises determining whether the switching circuit and/or the heating circuit is faulty.
Wherein determining a condition of a fault of the switching circuit and/or the heating circuit comprises:
the second detection result is that a close command has been issued to the switch circuit, and the first detection result is that the current input to the heating circuit is zero. Or,
the second detection result is that no closing instruction is issued to the switch circuit, and the first detection result is that the current input to the heating circuit is not zero.
The condition for determining that the switching circuit and/or the heating circuit is normal includes:
the second detection result is that a close command has been issued to the switch circuit, and the first detection result is that the current input to the heating circuit is not zero. Or,
the second detection result is that no close command is issued to the switch circuit, and the first detection result is that the current input to the heating circuit is zero.
Optionally, the current detection circuit comprises a transformer or
The current detection circuit comprises a detection resistor; the detection resistor is connected in series between the controlled end of the switching circuit and the heating circuit.
Optionally, the current detection circuit further includes an isolation amplifier, and the detection resistor is connected to the main control chip through the isolation amplifier.
The primary winding of the isolation amplifier is connected with the detection resistor in parallel, and the output winding of the isolation amplifier is connected with the analog-digital (AD) signal acquisition input end of the main control chip.
Optionally, the main control chip contains a built-in isolation amplifier.
The detection resistor is connected in parallel with the primary winding of the built-in isolation amplifier.
The primary winding of the built-in isolation amplifier is used as an AD signal acquisition input end of the main control chip.
Optionally, the current detection circuit comprises a hall current sensor.
The hall element of the hall current sensor is wound around the wiring between the switching circuit and the heating circuit.
The induced current output end of the Hall current sensor is connected with the AD signal acquisition input end of the main control chip.
Optionally, the current detection circuit further comprises a display unit and an alarm unit.
And the display unit is connected with the display signal output end of the main control chip and used for displaying the first detection result and displaying a corresponding fault code when the heating device is judged to have a fault.
The alarm unit is connected with the alarm signal output end of the main control chip and used for sending out an alarm signal in a preset alarm form when the heating device is judged to be in fault.
Optionally, the heating device further comprises a temperature detection circuit connected with the main control chip.
In order to achieve the above object, the utility model also provides an electric stewpot, which comprises the heating device.
Compared with the prior art, the embodiment of the utility model provides a include: the heating circuit is connected with a power supply through a controlled end of the switch circuit, and a control end of the switch circuit is connected with the main control chip; further comprising: and the current detection circuit is arranged between the switch circuit and the heating circuit and used for detecting the current input to the heating circuit and sending the first detection result to the main control chip. Through the utility model discloses the scheme can be so that not receive the influence of the mains voltage stable condition among the heating process to can in time judge heating device's trouble condition, guarantee the culinary art effect of food, reduce the potential safety hazard.
Drawings
The drawings in the embodiments of the present invention are described below, and the drawings in the embodiments are used for further understanding of the present invention, and are used together with the description to explain the present invention, and do not constitute a limitation to the scope of the present invention.
Fig. 1 is a schematic diagram of a heating control circuit including only a voltage detection circuit and not including a current detection circuit in the related art;
FIG. 2 is a schematic diagram of a heating control circuit of the related art that does not include a voltage detection circuit and a current detection circuit;
fig. 3 is a schematic view of a heating apparatus including a current detection circuit according to an embodiment of the present invention;
fig. 4 is a flow chart of an embodiment of the heating apparatus according to the present invention;
FIG. 5 is a block diagram of the electric stewpan according to the embodiment of the present invention.
Detailed Description
To facilitate understanding of those skilled in the art, the following further description of the present invention is provided in conjunction with the accompanying drawings and is not intended to limit the scope of the present invention.
At present, a plurality of problems exist in a heating control circuit of related cooking products, the heating control circuit shown in fig. 1 only comprises a voltage detection circuit, but does not comprise a current detection circuit, although the heating voltage can be adjusted according to the voltage stability condition detected by the voltage detection circuit under the condition that the mains voltage is too high or too low, whether the cooking products are not heated or are heated all the time can not be detected at the first time, namely the faults of the heating control circuit can not be judged, which can cause food waste and generate potential safety hazards. The heating control circuit shown in fig. 2 does not include a voltage detection circuit nor a current detection circuit, and even the most basic voltage stabilization condition cannot be judged, and when the mains voltage is too high, the heating power of the cooking product is very high; when the mains voltage is too low, the heating power of the cooking product is low, which seriously affects the effect of cooking food, is either too mushy or not cooked, and reduces the life of the cooking product itself. Based on foretell a great deal of problem, the embodiment of the utility model provides a novel heating control device is provided, can be so that not receive the influence of mains voltage stable condition among the heating process to can in time judge heating device's trouble condition, guarantee the culinary art effect of food, reduce the potential safety hazard.
In order to achieve the above object, the present invention provides a heating device 1, as shown in fig. 3, including a heating circuit 01, a main control chip 02 and a switch circuit 03, wherein the heating circuit 01 is connected to a power supply through a controlled terminal of the switch circuit 03, and a control terminal of the switch circuit 03 is connected to the main control chip 02; further comprising: the current detection circuit 04.
The current detection circuit 04 may be located in a loop formed by the utility power, the heating circuit 01, and the switching circuit 03, and the priority current detection circuit 04 is provided between the switching circuit 03 and the heating circuit 01, and is configured to detect the current input to the heating circuit 01 and send the first detection result to the main control chip 02.
The embodiment of the utility model provides an in, heating circuit 01 is passed through switching circuit 03 and is controlled the end and link to each other with the power, and this power can be the commercial power, also can be for predetermined power module, or the battery, does not do the restriction to the concrete form of power, any can to the utility model discloses a device or form that heating device provided the electric power energy all are in within the protection scope of the embodiment of the utility model.
Optionally, when the power supply may be mains supply, the heating device 1 may further include a voltage conversion circuit 05, where the voltage conversion circuit 05 is connected between the mains supply and each functional module, and is configured to perform rectification conversion and dc-dc conversion on the mains supply, convert the mains supply voltage into one or more dc voltages with different amplitudes, and provide the required power supply for each functional module. For example, in the embodiment of the present invention, the voltage conversion circuit 05 is connected between the commercial power and the main control chip 02 to provide the main control chip 02 with operating power.
In the embodiment of the present invention, as is known from the foregoing discussion, since there is no current detection circuit in the related art shown in fig. 1 and fig. 2, in order to solve the above problems, a current detection circuit 04 is added to the novel heating device 1 of the present embodiment.
The current detection circuit 04 is provided between the switching circuit 03 and the heating circuit 01, and detects a current input to the heating circuit 01 and transmits a first detection result to the main control chip 02. When a user selects a cooking function and a cooking product is cooked according to a program flow, the current detection circuit 04 detects the current input to the heating circuit 01 in real time and sends the detected current condition (including the change condition of the current amplitude along with the time) to the main control chip 02 in a first detection result form in real time or periodically; or the main control chip 02 collects the detection result of the current detection circuit in real time during the cooking process, so as to control the heating process of the whole heating device according to the current condition in the cooking process, and perform fault judgment on the whole heating device or the whole cooking device, thereby achieving the purpose of eliminating potential safety hazards in time, and the working flow is shown in fig. 4.
The main control chip 02 can judge the fault of the whole heating device or cooking device by combining the detected current value with the switch control condition of the main control chip 02 to the switch circuit 03, and the specific scheme is as follows.
Optionally, the main control chip 02 is configured to detect whether a close instruction has been issued to the switch circuit 03 and generate a second detection result; and judging the fault of the heating device 1 according to the second detection result and the received first detection result.
In the embodiment of the present invention, the switch circuit 03 can be one or more relays, one or more power switches, or an integrated circuit or a switch chip, and is not limited to the implementation form of the switch module 03, and any circuit or product capable of implementing the controllable switch function is within the protection scope of the embodiment of the present invention. The following description will be given taking a relay as an example.
Optionally, the closing instruction sent to the switch circuit 03 may be an actuation instruction sent to the relay, when the relay is actuated, the heating circuit 01 is connected to the mains supply to start heating, when the relay is disconnected, the heating circuit 01 is disconnected from the mains supply to stop heating, and the main control chip 02 controls the heating circuit 01 by periodically controlling the switch circuit 03, such as the collection and disconnection of the relay. Accordingly, under normal conditions, when the relay is closed and the heating circuit 01 starts to heat, the current detection circuit 04 should detect that current is input into the heating circuit 01; when the relay is turned off and the heating circuit 01 stops heating, the current detection circuit 04 does not detect that current is input to the heating circuit 01. Similarly, if any phenomenon that violates the above condition occurs, it may indicate that the heating apparatus is malfunctioning, for example, the relay pulls the current detection circuit 04 and does not detect that current is input to the heating circuit 01. Based on this theoretical basis, the main control chip 02 can perform fault judgment on the switching control condition (second detection result) of the switching circuit 03 by combining the current value (first detection result) detected by the current detection circuit 04 and the main control chip 02.
Optionally, the failure determination includes determining whether the switching circuit 03 and/or the heating circuit 01 fails.
Wherein, the condition for determining the fault of the switch circuit 03 and/or the heating circuit 01 includes:
the second detection result is that a close command has been issued to the switch circuit 03, and the first detection result is that the current input to the heating circuit 01 is zero. Or,
the second detection result is that no close command is issued to the switch circuit 03, and the first detection result is that the current input to the heating circuit 01 is not zero.
The conditions for determining that the switch circuit 03 and/or the heating circuit 01 are normal include:
the second detection result is that a close command has been issued to the switch circuit 03, and the first detection result is that the current input to the heating circuit 01 is not zero. Or,
the second detection result is that no close command is issued to the switch circuit 03, and the first detection result is that the current input to the heating circuit 01 is zero.
The embodiment of the utility model provides an in, main control chip 02 combines the current value that current detection circuit 04 detected and main control chip 02 to judge the on-off control condition of switch circuit 03, as long as satisfy above-mentioned condition, main control chip 02 alright with whether corresponding to judging switch circuit 03 and/or heating circuit 01 trouble. Through this embodiment scheme, can in time discover the trouble condition in the middle of the culinary art process, can avoid heating always when the heating circuit breaks down in the culinary art process, for example the relay is closed all the time, perhaps does not heat always, for example potential safety hazard and food waste that the condition such as relay can not the actuation caused.
Optionally, the current detection circuit 04 further includes a display unit 041 and an alarm unit 042.
In the embodiment of the present invention, after the main control chip 02 finds the fault condition of the heating device through the current detection module 04 in time, in order to send out the fault prompt to the user in time, so that the user can know the fault condition in the first time, the display unit 041 and the alarm unit 042 are further provided in the current detection circuit 04.
The display unit 041 is connected to the display signal output terminal of the main control chip 02, and is configured to display the first detection result and display a corresponding fault code when it is determined that the heating apparatus 1 is faulty.
In the embodiment of the present invention, the display unit 041 may adopt any device, equipment or module with a display function, and the implementation form of the display unit 041 is not particularly limited. For example, it may be an LED display screen or a software-implemented display window. The display unit 041 may display, on the one hand, the current condition detected by the current detection circuit 04, i.e. the first detection result described above, and on the other hand, a specific fault condition, e.g. a corresponding fault code, when it is determined that the heating apparatus 1 is faulty. It should be noted that, whether the first detection result is displayed or the failure condition is displayed, the display mode may include one or more of the following: characters, letters, numbers, images, animation, diagrams, and the like.
The alarm unit 042 is connected with the alarm signal output end of the main control chip 02 and used for sending out an alarm signal in a preset alarm form when the heating device is judged to be in fault.
The embodiment of the utility model provides an in, in order to reach the purpose of effectively reminding the user, can predefine the alarm form for the difference with alarm unit 042 according to the application scene of difference, this predetermined alarm form can include: sound, colored light, vibration. Such as a beep, music, voice alert, red flashing, etc.
As can be seen from the above, the addition of the current detection module 04 can assist the main control chip 02 to perform fault judgment on the whole heating device or the whole cooking device, and can also assist the main control chip 02 to control the heating process of the whole heating device.
In the cooking process, when the voltage instability such as the increase or decrease of the mains voltage occurs, the current input to the heating circuit 01 changes suddenly along with the fluctuation of the mains voltage, and after the current detection circuit 04 is added, the current detection circuit 04 can capture the current transformation in real time and send the current change situation to the main control chip 02 in the form of a first detection result, so that the main control chip 02 timely adjusts the switch circuit 03 according to the first detection result to obtain the stable heating current. Through this embodiment scheme, avoided in the heating process because mains voltage is unstable to heating device or the influence that the culinary art product caused, guaranteed the culinary art quality of food.
The specific scheme for the master control chip 02 to adjust the switch circuit 03 is as follows.
Optionally, the main control chip 02 is further configured to monitor a magnitude of the current input to the heating circuit 01 according to the first detection result when the heating apparatus 1 is not in fault, and adjust a switching period of the switching circuit 03 according to the monitored magnitude of the current, the switching period increasing as the current of the heating circuit decreases.
In the embodiment of the utility model, if current detection circuit 04 detects that present electric current is very big, explain present voltage and rise, in order to keep heating circuit 01's heating power stable as far as possible and protect switch circuit not to be harmed, can reduce switch circuit 03's on-off cycle, or control switch circuit 03 and turn-off temporarily, or reduce switch circuit 03's conduction angle. Similarly, if the current detection circuit 04 detects that the current is small, which indicates that the current voltage is decreased, the switching period of the switch circuit 03 may be increased or the conduction angle of the switch circuit 03 may be increased in order to keep the heating power of the heating circuit 01 stable as much as possible.
Through this embodiment scheme, effectively avoid the influence that commercial power voltage is unstable to heating device or culinary art product cause, guaranteed the culinary art quality of food.
The hardware structure of the current detection circuit 04 will be described in detail below.
Optionally, the current detection circuit 04 includes: current transformer
In the embodiment of the present invention, the current detection circuit 04 may be a current transformer. The primary side winding of the current transformer is wound around the connecting line between the switching circuit 03 and the heating circuit 01; the current output end of the secondary side winding is connected with the main control chip 02.
The current transformer principle is designed according to the electromagnetic induction principle. The current transformer is composed of a closed iron core and a winding. The primary side winding of the current transformer has few turns and is connected in series in a circuit of current to be measured, so that all current of the circuit generally flows through the primary side winding, the secondary side winding has more turns and is connected in series in a measuring instrument and a protection circuit, and when the current transformer works, the secondary side circuit of the current transformer is always closed, so that the impedance of series coils of the measuring instrument and the protection circuit is very small, and the working state of the current transformer is close to short circuit. The current transformer converts a large current on the primary side into a small current on the secondary side for use, and the secondary side cannot be opened. Because the primary side winding and the secondary side winding are not directly electrically connected, the main control chip 02 and the heating main loop are electrically isolated, and the impact of large current or large voltage in the main loop on the main control chip 02 is avoided.
Optionally, the current detection circuit 04 comprises a detection resistor; the detection resistor is connected in series between the controlled end of the switching circuit 03 and the heating circuit 01.
In the embodiment of the present invention, the current detection circuit 04 may also be a detection resistor. In the cooking process, the detection resistor is connected between the controlled end of the switch circuit 03 and the heating circuit 01 in series, when current flows through the detection resistor, a voltage drop is generated on the detection resistor, and the main control chip 02 realizes the collection of the heating current in the heating main loop by detecting the voltage drop.
Optionally, the detection resistor is a manganese copper wire.
Optionally, the current detection circuit 04 further includes an isolation amplifier, and the detection resistor is connected to the main control chip 02 through the isolation amplifier.
The primary winding of the isolation amplifier is connected in parallel with the detection resistor, and the output winding of the isolation amplifier is connected with the analog-digital (AD) signal acquisition input end of the main control chip 02.
The embodiment of the utility model provides an in, in order to realize the collection of the pressure drop of main control chip 02 production on to the detection resistance to in order to realize main control chip 02 and the electrical isolation who heats the major loop, can add isolation amplifier in current detection circuit 04. It should be noted that the isolation amplifier may be a separate device independent of the main control chip 02, or may be a built-in isolation amplifier in the main control chip 02, and the embodiment of the present invention does not limit the implementation form of the isolation amplifier.
Optionally, the current detection circuit comprises a hall current sensor.
In the embodiment of the present invention, the current detection circuit 04 may also be a hall current sensor. The Hall current sensor is designed based on a magnetic balance type Hall principle. According to the Hall effect principle, current is introduced from a control current end of a Hall element, and a magnetic field with the magnetic field intensity of B is applied in the normal direction of the plane of the Hall element, so that a potential VH which is called Hall potential and is in direct proportion to the product of the control current I and the magnetic field intensity B is generated in the direction vertical to the current and the magnetic field direction (namely between Hall output ends), namely VH is KIBsin theta; wherein K is a Hall coefficient and is determined by the material of the Hall element; i is a control current; b is the magnetic field intensity; VH is the Hall potential.
Optionally, the hall element of the hall current sensor is looped around the connection between the switching circuit 03 and the heating circuit 01. The induced current output end of the Hall current sensor is connected with the AD signal acquisition input end of the main control chip 02.
As can be seen from the above description of the principle, the hall element generates an induced voltage by the current change in the heating main loop, and the induced voltage is transmitted to the AD signal acquisition input terminal of the main control chip 02 in the form of an induced current through the output wire. Due to the structural characteristics of the hall current sensor, the main control chip 02 can be electrically isolated from the heating main loop without adding an additional isolation amplifier.
Optionally, the heating device 1 further comprises a temperature detection circuit 05 connected to the main control chip 02.
The embodiment of the utility model provides an in, heating device 1 still includes temperature detect circuit 05, and this temperature detect circuit can be at culinary art in-process real-time supervision heating temperature to main control chip 02 adjusts heating circuit's heating power according to this heating temperature in real time, can realize eating the material and adopt the most suitable heating temperature to heat according to the heating of difference, has improved the culinary art effect in kind.
In order to achieve the above object, the present invention further provides an electric stewpot 2, including the heating device 1, as shown in fig. 5, which needs to be described, any embodiment of the above-mentioned heating device is applicable to the embodiment of the electric stewpot, and is not repeated here.
Compared with the prior art, the embodiment of the utility model provides a include: the heating circuit is connected with a power supply through a controlled end of the switch circuit, and a control end of the switch circuit is connected with the main control chip; further comprising: and the current detection circuit is arranged between the switch circuit and the heating circuit and used for detecting the current input to the heating circuit and sending the first detection result to the main control chip. Through the utility model discloses the scheme can be so that not receive the influence of the mains voltage stable condition among the heating process to can in time judge heating device's trouble condition, guarantee the culinary art effect of food, reduce the potential safety hazard.
It should be noted that the above-mentioned embodiments are only for facilitating understanding of those skilled in the art, and are not intended to limit the scope of the present invention, and any obvious substitutions, modifications, etc. made by those skilled in the art without departing from the spirit of the present invention are within the scope of the present invention.
Claims (10)
1. A heating device comprises a heating circuit, a main control chip and a switch circuit, wherein the heating circuit is connected with a power supply through a controlled end of the switch circuit, and a control end of the switch circuit is connected with the main control chip; it is characterized by also comprising:
the current detection circuit is used for detecting the current input to the heating circuit and sending a first detection result to the main control chip;
the main control chip is used for monitoring the magnitude of the current input to the heating circuit according to the first detection result and adjusting the switching period of the switching circuit, wherein the switching period is increased along with the reduction of the current of the heating circuit.
2. The heating device according to claim 1,
the main control chip is used for detecting whether a closing instruction is sent to the switch circuit and generating a second detection result; and judging the fault of the heating device according to the second detection result.
3. A heating device as claimed in claim 1 or 2, characterized in that the current detection circuit comprises a transformer.
4. The heating apparatus according to claim 1 or 2, wherein the current detection circuit includes a detection resistor; the detection resistor is connected in series between the controlled end of the switch circuit and the heating circuit.
5. The heating device of claim 4, wherein the current sensing circuit further comprises an isolation amplifier, and the sensing resistor is connected to the main control chip through the isolation amplifier;
the primary winding of the isolation amplifier is connected with the detection resistor in parallel, and the output winding of the isolation amplifier is connected with the analog-digital (AD) signal acquisition input end of the main control chip.
6. The heating device of claim 4, wherein the main control chip contains a built-in isolation amplifier;
the detection resistor is connected with a primary winding of the built-in isolation amplifier in parallel;
and the primary winding of the built-in isolation amplifier is used as an AD signal acquisition input end of the main control chip.
7. The heating device of claim 1, wherein the current detection circuit comprises a hall current sensor;
the Hall element of the Hall current sensor surrounds the periphery of a connecting line between the switch circuit and the heating circuit;
and the induced current output end of the Hall current sensor is connected with the AD signal acquisition input end of the main control chip.
8. The heating apparatus as claimed in claim 1, wherein the current detection circuit further comprises a display unit and an alarm unit;
the display unit is connected with a display signal output end of the main control chip and used for displaying the first detection result and displaying a corresponding fault code when the heating device is judged to have a fault;
and the alarm unit is connected with an alarm signal output end of the main control chip and used for sending out an alarm signal in a preset alarm form when the heating device is judged to have a fault.
9. The heating device of claim 1, further comprising a temperature sensing circuit connected to the main control chip.
10. An electric stewpan, characterized in that it comprises a heating device as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621044115.1U CN206096986U (en) | 2016-09-08 | 2016-09-08 | Heating device and electric saucepan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621044115.1U CN206096986U (en) | 2016-09-08 | 2016-09-08 | Heating device and electric saucepan |
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| Publication Number | Publication Date |
|---|---|
| CN206096986U true CN206096986U (en) | 2017-04-12 |
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| CN201621044115.1U Active CN206096986U (en) | 2016-09-08 | 2016-09-08 | Heating device and electric saucepan |
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| CN (1) | CN206096986U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108969181A (en) * | 2018-07-19 | 2018-12-11 | 广州途悠悠健康科技有限公司 | A kind of human body heating physiotherapy equipment circuit structure |
| CN111796216A (en) * | 2020-07-14 | 2020-10-20 | 河北金环包装有限公司 | Fault detector and fault detection method for plastic cover heating device |
| CN115453904A (en) * | 2022-09-21 | 2022-12-09 | 中山市峻国电器有限公司 | Food material processing control method and device based on Internet of things |
-
2016
- 2016-09-08 CN CN201621044115.1U patent/CN206096986U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108969181A (en) * | 2018-07-19 | 2018-12-11 | 广州途悠悠健康科技有限公司 | A kind of human body heating physiotherapy equipment circuit structure |
| CN111796216A (en) * | 2020-07-14 | 2020-10-20 | 河北金环包装有限公司 | Fault detector and fault detection method for plastic cover heating device |
| CN115453904A (en) * | 2022-09-21 | 2022-12-09 | 中山市峻国电器有限公司 | Food material processing control method and device based on Internet of things |
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| TR01 | Transfer of patent right |
Effective date of registration: 20230530 Address after: No. 999, Mei Li Road, Huaiyin District, Ji'nan, Shandong Patentee after: Shandong Jiuchuang Home Appliance Co.,Ltd. Address before: No. 999, Mei Li Road, Huaiyin District, Ji'nan, Shandong Patentee before: JOYOUNG Co.,Ltd. |