CN214507400U - Heating rod device and heating equipment - Google Patents
Heating rod device and heating equipment Download PDFInfo
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- CN214507400U CN214507400U CN202023117727.8U CN202023117727U CN214507400U CN 214507400 U CN214507400 U CN 214507400U CN 202023117727 U CN202023117727 U CN 202023117727U CN 214507400 U CN214507400 U CN 214507400U
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- heating rod
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Abstract
The utility model provides a heating rod device and heating equipment, the heating rod device is provided with a control circuit board and a heating rod, the control circuit board is electrically connected with the heating rod, the control circuit board is provided with a main control circuit and a water leaving detection circuit, and the water leaving detection circuit is electrically connected with the main control circuit; the water leaving detection circuit comprises a touch chip and more than two detection electrodes, the touch chip is electrically connected with the master control circuit, and each detection electrode is electrically connected with the touch chip. This heating rod device is used to this firing equipment, uses the utility model discloses a heating rod device can improve and leave water detectivity and reliability.
Description
Technical Field
The utility model relates to a heating rod technical field, it is concrete to relate to a heating rod device, still relate to the firing equipment who uses this heating rod device.
Background
The water-leaving power-off protection circuit can enable the heating rod to output a feedback signal to the controller when the heating rod leaves the water surface, and the controller cuts off the power supply, so that the hidden danger of fire when the shell is seriously burnt due to overhigh temperature rise of the rod body when the heating rod leaves the water is avoided.
At present, the heating rod water leaving scheme on the market is generally a single-channel touch ic chip for water leaving induction. The disadvantage of the prior art is that the heating rod body can not induce the heating rod to leave water when being placed on the side, and because only one induction area and the induction water leaving area are limited, when the water level is reduced, part of the rod body is exposed out of the water surface and is dried, so that the heating rod shell is deformed, and even the heating rod can be on fire when the water level is serious. In another scheme, a single-channel touch ic chip is adopted to be assisted by two overheating protectors, and although the heating rod dry burning caused by the limitation of the off-water induction ic chip when the side surface of the rod body is exposed out of the water surface can be avoided, the overall cost is increased when the two overheating protectors are added.
Disclosure of Invention
A first object of the utility model is to provide an improve heating rod device from water detectivity and reliability.
A second object of the present invention is to provide a heating rod device with improved sensitivity and reliability of water-leaving detection.
In order to achieve the first purpose, the heating rod device provided by the utility model is provided with a control circuit board and a heating rod, wherein the control circuit board is electrically connected with the heating rod, the control circuit board is provided with a main control circuit and a water leaving detection circuit, and the water leaving detection circuit is electrically connected with the main control circuit; the water leaving detection circuit comprises a touch chip and more than two detection electrodes, the touch chip is electrically connected with the master control circuit, and each detection electrode is electrically connected with the touch chip.
It is thus clear that by the above scheme, the utility model discloses a detection circuitry leaves among the heating rod device can realize the multiple spot and detect through setting up more than two detection electrode to improve the sensitivity that leaves the water detection, the guarantee leaves the reliability that the water detected.
In a further scheme, the water leaving detection circuit is also provided with a filter circuit, and the number of the filter circuit is equal to that of the detection electrodes; each detection electrode is electrically connected with the touch chip through a corresponding filter circuit.
Therefore, each detection electrode is electrically connected with the touch chip through the corresponding filter circuit, and the accuracy of the water leaving detection can be improved.
In a further embodiment, the number of detection electrodes is two or four.
Therefore, the number of the detection electrodes can be set according to needs, and the application degree of the heating rod device is improved.
In a further scheme, the control circuit board is further provided with a temperature detection circuit, and the temperature detection circuit is electrically connected with the touch chip.
Therefore, the temperature detection circuit is arranged, so that the heating temperature can be detected in real time, and the heating temperature can be conveniently controlled.
In a further scheme, the control circuit board is further provided with a buzzer circuit, and the buzzer circuit is electrically connected with the main control circuit.
Therefore, the buzzer circuit can be used for carrying out sound alarm prompt and is convenient for reminding a user.
In a further scheme, the control circuit board is further provided with a display circuit, and the display circuit is electrically connected with the main control circuit.
Therefore, the display circuit is arranged, and the temperature information and the fault information of the heating device can be displayed so as to be known by a user.
In a further scheme, the control circuit board is further provided with a heating rod power supply switch circuit, and the heating rod power supply switch circuit is electrically connected with the main control circuit.
Therefore, the working state of the heating rod can be conveniently controlled by arranging the power supply switch circuit of the heating rod.
In a further scheme, the heating rod comprises a first heating rod, a second heating rod and a third heating rod, wherein the first end of the first heating rod and the first end of the second heating rod are electrically connected with the first end of the third heating rod, and the second end of the third heating rod is electrically connected with the zero line end of the power supply; the heating rod power supply switch circuit comprises a first switch circuit and a second switch circuit, a control end of the first switch circuit and the second switch circuit are both electrically connected with the main control circuit, a second end of the first heating rod is electrically connected with the power supply live wire end through a switch end of the first switch circuit, and a second end of the second heating rod is electrically connected with the power supply live wire end through a switch end of the second switch circuit.
Therefore, the number of the heating rods can be selected according to needs by arranging the first heating rod, the second heating rod and the third heating rod, and the heating process can be conveniently controlled.
In a further scheme, the control circuit board is further provided with an indicating lamp circuit, and the indicating lamp circuit is electrically connected with the main control circuit.
Therefore, the working state of the heating rod device can be indicated by arranging the indicating lamp circuit, so that a user can know the current working state of the heating rod device.
In order to achieve the second objective, the heating device of the present invention is provided with a heating rod device, and the heating rod device employs the heating rod device.
It is thus clear that by the above scheme, the utility model discloses a detection circuitry leaves among the heating rod device can realize the multiple spot and detect through setting up more than two detection electrode to improve the sensitivity that leaves the water detection, the guarantee leaves the reliability that the water detected.
Drawings
Fig. 1 is an exploded view of an embodiment of a heating rod device according to the present invention.
Fig. 2 is a structural installation diagram of the control circuit board and the heating rod in the embodiment of the heating rod device of the present invention.
Fig. 3 is a schematic block circuit diagram of an embodiment of the heating rod device of the present invention.
Fig. 4 is a schematic circuit diagram of a filter circuit in an embodiment of the heating rod device of the present invention.
Fig. 5 is a schematic structural diagram of a control circuit board provided with two electrodes in an embodiment of the heating rod device of the present invention.
Fig. 6 is a schematic structural diagram of a control circuit board provided with four electrodes in an embodiment of the heating rod device of the present invention.
Fig. 7 is a schematic circuit diagram of a temperature detection circuit in an embodiment of the heating rod device of the present invention.
Fig. 8 is a schematic circuit diagram of a buzzer circuit in an embodiment of the heating rod device of the present invention.
Fig. 9 is a schematic circuit diagram of a power supply switch circuit of the heating rod according to the embodiment of the heating rod device of the present invention.
The present invention will be further explained with reference to the drawings and examples.
Detailed Description
Heating rod apparatus embodiment:
as shown in fig. 1 and 2, the heating rod device is provided with an upper shell 1, a lower shell 2, a control circuit board 3 and a heating rod 4, wherein the upper shell 1 and the lower shell 2 are both hollow-out, and the upper shell 1 and the lower shell 2 are detachably mounted. Go up casing 1 and casing 2 cooperation formation installation cavity down, control circuit board 3 and heating rod 4 all set up in the installation cavity, and control circuit board 3 is connected with heating rod 4 electricity.
Referring to fig. 3, the control circuit board 3 is provided with a main control circuit 31, an off-water detection circuit 32, a temperature detection circuit 33, a buzzer circuit 34, a display circuit 35, an indicator light circuit 36 and a heating rod power supply switch circuit 37, wherein the off-water detection circuit 32, the buzzer circuit 34, the display circuit 35, the indicator light circuit 36 and the heating rod power supply switch circuit 37 are all electrically connected with the main control circuit 31.
The water leaving detection circuit 32 includes a touch chip 321 and two or more detection electrodes 322, the touch chip 321 is electrically connected to the main control circuit 31, and each detection electrode 322 is electrically connected to the touch chip 321. Referring to fig. 4, in order to improve the accuracy of signal detection, the water leaving detection circuit 32 is further provided with filter circuits 323, the number of the filter circuits 323 is equal to that of the detection electrodes 322, and each detection electrode 322 is electrically connected to the touch chip 321 through the corresponding filter circuit 323. In this embodiment, the filter circuit 323 includes a first resistor R1 and a first capacitor C1, a first end of the first resistor R1 is electrically connected to the detection electrode 322, a second end of the first resistor R1 is electrically connected to the touch chip 321, a first end of the first capacitor C1 is electrically connected to a second end of the first resistor R1, and a second end of the first capacitor C1 is grounded. Preferably, the touch chip 321 is a touch chip of model SC92F84B 62.
The mounting position of the detection electrode 322 may be set as needed, for example, may be mounted on the upper and lower cases 1 and 2, or on the control circuit board 3. In one embodiment, referring to fig. 6, the number of the detection electrodes 322 is two, and the two detection electrodes 322 are respectively disposed on two sides of the control circuit board 3, so as to perform double-point detection. In another embodiment, referring to fig. 6, the number of the detection electrodes 322 is four, and the four detection electrodes 322 are respectively disposed at four corners of the control circuit board 3, so that four-point detection can be performed.
As can be seen from fig. 3, the temperature detection circuit 33 is electrically connected to the touch chip 321. Referring to fig. 7, the temperature detection circuit 33 includes a thermistor NTC, a second resistor R2 and a second capacitor C2, a first terminal of the thermistor NTC is electrically connected to a power source, a second terminal of the thermistor NTC is electrically connected to a first terminal of a second resistor R2, a second terminal of the second resistor R2 is grounded, a second capacitor C2 is connected in parallel with the thermistor NTC, and a second terminal of the thermistor NTC is electrically connected to the touch chip 321. For multipoint temperature detection, a multiplex temperature detection circuit 33 may be provided.
The buzzer circuit 34 is electrically connected to the main control circuit 31. Referring to fig. 8, the buzzer circuit 34 includes a buzzer J1 and an NPN transistor Q1, a first end of the buzzer J1 is electrically connected to a power supply terminal, a second end of the buzzer J1 is electrically connected to a collector of the NPN transistor Q1, a base of the NPN transistor Q1 is electrically connected to the main control circuit 31, and an emitter of the NPN transistor Q1 is grounded.
The display circuit 35 is electrically connected to the main control circuit 31. The display circuit 35 is a well-known display circuit, for example, a nixie tube display circuit or a liquid crystal display circuit, which are well-known to those skilled in the art and will not be described herein again. The indicator light circuit 36 is electrically connected to the main control circuit 31, the indicator light circuit 36 indicates the working state of the heating rod device, and the indicator light circuit 36 is a known indicator light circuit, which is not described herein again.
As can be seen from fig. 2, the heating rod 4 includes a first heating rod 41, a second heating rod 42, and a third heating rod 43, a first end of the first heating rod 41 and a first end of the second heating rod 42 are both electrically connected to a first end of the third heating rod 43, and a second end of the third heating rod 43 is electrically connected to the power supply neutral terminal N. Referring to fig. 9, the heating rod power supply switch circuit 36 includes a first switch circuit 361 and a second switch circuit 362, a control terminal of the first switch circuit 361 and the second switch circuit 362 are both electrically connected to the main control circuit 31, a second terminal of the first heating rod 41 is electrically connected to the power supply line terminal L through a switch terminal of the first switch circuit 361, and a second terminal of the second heating rod 42 is electrically connected to the power supply line terminal L through a switch terminal of the second switch circuit 362.
In this embodiment, the first switch circuit 361 includes an NPN transistor Q2 and a relay switch K1, a base of the NPN transistor Q2 is electrically connected to the main control circuit 31, a collector of the NPN transistor Q2 is electrically connected to a power source terminal and a first coil terminal of the relay switch K1, an emitter of the NPN transistor Q2 is grounded, a second coil terminal of the relay switch K1 is electrically connected to the power source terminal, a normally open terminal of the relay switch K1 is electrically connected to the power source live wire terminal L, and a common terminal of the relay switch K1 is electrically connected to a second terminal of the first heating rod 41 through a terminal H1. The second switch circuit 362 comprises an optical coupler J2 and a controlled silicon Q3, a first terminal of a light emitting side of the optical coupler J2 is electrically connected with a power supply end, a second terminal of the light emitting side of the optical coupler J2 is electrically connected with the main control circuit 31, a first terminal of a light receiving side of the optical coupler J2 is electrically connected with a control electrode of a controlled silicon Q3, a first electrode of the controlled silicon Q3 is electrically connected with a public end of a relay switch K1, a second electrode of the controlled silicon Q3 is electrically connected with a second end of the second heating rod 42 through a terminal H2, and a second terminal of the light receiving side of the optical coupler J2 is electrically connected with a second electrode of the controlled silicon Q3. The second end of the third heating rod 43 is electrically connected to the power neutral terminal N through a terminal N1.
When the heating rod power supply switch circuit 36 works, the main control circuit 31 sends a control signal to the control end of the first switch circuit 361, and the paths among the live wire terminal L, the first heating rod 41, the third heating rod 43 and the neutral wire terminal N are switched on, so that the first heating rod 41 and the third heating rod 4 work, and at this time, the second heating rod 42 does not work. When necessary, the main control circuit 31 may further send a control signal to the control end of the second switch circuit 362 to turn on the paths between the live wire terminal L, the second heating rod 42, the third heating rod 43, and the neutral wire terminal N, and at this time, the first heating rod 41, the second heating rod 42, and the third heating rod 43 operate simultaneously.
Heating apparatus embodiment:
in this embodiment, the heating apparatus is provided with a heating rod device, and the heating rod device in the above embodiments is applied to the heating rod device. The heating equipment comprises a water dispenser, a coffee machine, a dehumidifier, a dish washer, a dehumidifier and other equipment which need liquid heating.
According to the above, the utility model discloses a detection circuitry leaves water among the heating rod device can realize the multiple spot and detect through setting up the detection electrode more than two to improve the sensitivity that leaves water and detect, the guarantee leaves the reliability that water detected.
It should be noted that the above is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and all insubstantial modifications made by using the design concept of the present invention also fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a heating rod device, is provided with control circuit board and heating rod, control circuit board with the heating rod electricity is connected, its characterized in that:
the control circuit board is provided with a main control circuit and an off-water detection circuit, and the off-water detection circuit is electrically connected with the main control circuit;
the water leaving detection circuit comprises a touch chip and more than two detection electrodes, the touch chip is electrically connected with the master control circuit, and each detection electrode is electrically connected with the touch chip.
2. A heater rod apparatus according to claim 1, wherein:
the water leaving detection circuit is also provided with a filter circuit, and the number of the filter circuit is equal to that of the detection electrodes;
each detection electrode is electrically connected with the touch control chip through the corresponding filter circuit.
3. A heater rod apparatus according to claim 1, wherein:
the number of the detection electrodes is two or four.
4. A heating rod apparatus according to any one of claims 1 to 3, wherein:
the control circuit board is further provided with a temperature detection circuit, and the temperature detection circuit is electrically connected with the touch chip.
5. A heating rod apparatus according to any one of claims 1 to 3, wherein:
the control circuit board is further provided with a buzzer circuit, and the buzzer circuit is electrically connected with the main control circuit.
6. A heating rod apparatus according to any one of claims 1 to 3, wherein:
the control circuit board is also provided with a display circuit, and the display circuit is electrically connected with the main control circuit.
7. A heating rod apparatus according to any one of claims 1 to 3, wherein:
the control circuit board is further provided with a heating rod power supply switch circuit, and the heating rod power supply switch circuit is electrically connected with the main control circuit.
8. A heater rod apparatus according to claim 7, wherein:
the heating rod comprises a first heating rod, a second heating rod and a third heating rod, wherein the first end of the first heating rod and the first end of the second heating rod are electrically connected with the first end of the third heating rod, and the second end of the third heating rod is electrically connected with the zero line end of the power supply;
the heating rod power supply switch circuit comprises a first switch circuit and a second switch circuit, the control end of the first switch circuit and the second switch circuit are electrically connected with the main control circuit, the second end of the first heating rod passes through the switch end of the first switch circuit and is electrically connected with the power supply live wire end, and the second end of the second heating rod passes through the switch end of the second switch circuit and is electrically connected with the power supply live wire end.
9. A heating rod apparatus according to any one of claims 1 to 3, wherein:
the control circuit board is also provided with an indicating lamp circuit, and the indicating lamp circuit is electrically connected with the main control circuit.
10. A heating device is provided with a heating rod device, and is characterized in that: the heating rod device is applied with the heating rod device of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023117727.8U CN214507400U (en) | 2020-12-22 | 2020-12-22 | Heating rod device and heating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023117727.8U CN214507400U (en) | 2020-12-22 | 2020-12-22 | Heating rod device and heating equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214507400U true CN214507400U (en) | 2021-10-26 |
Family
ID=78209777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023117727.8U Active CN214507400U (en) | 2020-12-22 | 2020-12-22 | Heating rod device and heating equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214507400U (en) |
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2020
- 2020-12-22 CN CN202023117727.8U patent/CN214507400U/en active Active
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