CN105210980A - A kind of Shui nationality casing electricity consumption heater and method thereof - Google Patents
A kind of Shui nationality casing electricity consumption heater and method thereof Download PDFInfo
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- CN105210980A CN105210980A CN201510653479.3A CN201510653479A CN105210980A CN 105210980 A CN105210980 A CN 105210980A CN 201510653479 A CN201510653479 A CN 201510653479A CN 105210980 A CN105210980 A CN 105210980A
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- 230000005611 electricity Effects 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000009413 insulation Methods 0.000 claims abstract description 55
- 238000010438 heat treatment Methods 0.000 claims abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 39
- 230000010354 integration Effects 0.000 claims abstract description 37
- 239000003990 capacitor Substances 0.000 claims abstract description 30
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims description 28
- 239000012530 fluid Substances 0.000 claims description 12
- 238000013461 design Methods 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 5
- 239000000700 radioactive tracer Substances 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 24
- 229910052710 silicon Inorganic materials 0.000 description 24
- 239000010703 silicon Substances 0.000 description 24
- 238000010586 diagram Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000009841 combustion method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 206010014357 Electric shock Diseases 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 238000000866 electrolytic etching Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/06—Arrangements for heating or lighting in, or attached to, receptacles for live fish
- A01K63/065—Heating or cooling devices
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Control Of Resistance Heating (AREA)
Abstract
The invention discloses a kind of Shui nationality casing electricity consumption heater, comprise insulation tube and the heating control circuit plate being positioned at insulation tube, heating control circuit plate comprises capacitive sensing module and is connected with the input of single chip control module with the output of single chip control module capacitive sensing module.The invention also discloses a kind of electrical heating method for Shui nationality casing, the output of the time of integration that detecting electrode gathers the electric capacity of insulation tube external space medium, single chip control module detects integrating capacitor comprising capacitive sensing module, single chip control module control power control device.The present invention detects insulation tube external space dielectric capacitance by the capacitive sensing module be arranged in insulation tube, and the time of integration of this electric capacity is detected by single chip control module, thus detect whether heater immerses in liquid in a non contact fashion, solve the corrosion-prone technical problem of contact measurement electrode, and detection sensitivity is high, reduce the potential safety hazard of electric heater unit, extend its service life.
Description
Technical field
The present invention relates to heating device technology area, relate to a kind of Shui nationality casing electricity consumption heater and method thereof particularly.
Background technology
The heating of Shui nationality casing (as tropical ornamental fish cylinder), the heating tube (rod) generally by putting into Shui nationality casing heats in the energized state.Most of heating tube (rod) does not detect it and whether immerses function in liquid, thus after making heating tube (rod) leave liquid, such as carry out water tank change water, to keep a public place clean etc. work time, power-off is forgotten because of careless and inadvertent, for another example because people's in time feed-tank of going out for a long time changes water or adds water, heating tube (rod) all can be caused to occur dry combustion method phenomenon, thus cause scald human body, heating tube (rod) burst, even cause fire.
Also whether existence detection heating tube (rod) immerses the product in liquid on the market at present, this series products draws two metal electrodes in heating tube (rod) upper end, whether there is Weak current judge whether heating tube (rod) immerses in liquid by detecting between two electrodes.This series products solves the above-mentioned problem preventing heating tube (rod) dry combustion method, but metal electrode is easy to electrolytic etching, and particularly corrode very serious in the liquid such as seawater, its service life is not long.In addition, long period of soaking has steam etc. to immerse in heating tube (rod) unavoidably, makes electronic component there is breakdown phenomenon, thus makes two metal electrode conductions, causes people (fish) Danger Electric shock risk.
Summary of the invention
For above-mentioned prior art Problems existing, the invention provides a kind of Shui nationality casing electricity consumption heater and method thereof, the distribution capacity of insulation tube external space medium is detected by the capacitive sensing module be arranged in insulation tube, this distribution capacity affects the time of integration of integrating capacitor, by the time of integration of microprocessor detect integrating capacitor, thus detect whether electric heater unit immerses in liquid in a non contact fashion more rapidly.
Object of the present invention is achieved through the following technical solutions:
A kind of Shui nationality casing electricity consumption heater, comprise insulation tube and the heating control circuit plate being positioned at insulation tube, described heating control circuit plate comprises capacitive sensing module and single chip control module, described capacitive sensing module comprises detecting electrode and integrating capacitor, the detecting electrode I/O port that access single chip control module in parallel with integrating capacitor, described capacitive sensing module is for gathering the distribution capacity of insulation tube external space medium, and described single chip control module is for detecting the time of integration of integrating capacitor.
When above-mentioned electric heater unit is positioned in air, is gathered the electric capacity of insulation tube external space medium by the detecting electrode of capacitive sensing module, and detected the time of integration of integrating capacitor by single chip control module, and this time of integration is set to threshold value, when above-mentioned electric heater unit immerses in liquid, capacitive sensing module detects that insulation tube external space dielectric distribution electric capacity becomes large, its charging rate also becomes large, the time of integration that single chip control module detects integrating capacitor diminishes relative to above-mentioned threshold value, therefore single chip control module passes through the time of integration that detection integrating capacitor changes with the change of insulation tube external space distribution capacity, and by this time of integration compared with the threshold value of setting, when being equal to or greater than threshold value the time of integration, just can be judged as that above-mentioned heater does not immerse in liquid, single chip control module sends the signal stopping heating to related circuit, heater stop heats.The technical program detects the capacitance profile of insulation tube external space medium by the capacitive sensing module be arranged in insulation tube, and the time of integration of integrating capacitor is detected by single chip control module, thus detect whether heater immerses in liquid in a non contact fashion, solve the corrosion-prone technical problem of contact measurement electrode, reduce the potential safety hazard of electric heater unit, extend its service life, and when above-mentioned electric heater unit immerses liquid, the time of integration of integrating capacitor is shorter, namely threshold value is less, therefore the sensitivity of above-mentioned heater is higher.
Further, described detecting electrode is close to the inwall of described insulation tube, the detecting electrode being close to insulation tube inwall more sensitively can detect the capacitance variations outside insulation tube, improves the sensitivity of capacitive sensing module, ensures that above-mentioned electric heater unit possesses good service behaviour.
Further, described detecting electrode is sheet metal or metal film, the sheet metal of certain area or metal film is close to insulation tube inwall appropriate location, as detecting electrode, while its detection perform of guarantee, reduces the cost of manufacture of above-mentioned electric heater unit.
Further, described sheet metal inner surface is connected with spring, the described spring other end is fixedly connected on described heating control circuit plate, use the spring of certain length as support member, enable sheet metal at insulation tube inner close fitting inwall, because sheet metal is and insulation tube contact internal walls, thus be convenient to above-mentioned electric heater unit disassembly and assembly.
Further, described heating control circuit plate also comprises temperature detecting module and power control device, described temperature detecting module output connects the input of single chip control module, the input of described power control device connects the output of single chip control module, described power control device output is connected with resistance wire heater, power control device is preferably controllable silicon, controllable silicon has good switching characteristic, can in time, accurately, the break-make of controlling resistance silk heater rapidly, and the power output of adjustable resistor silk heater.Temperature detecting module is made up of thermistor and subsidiary component thereof, the fluid temperature input single chip control module that temperature detecting module will detect, fluid temperature compares with setting value by single chip control module, when fluid temperature is less than setting value, export heating signal to power control device, power control device makes resistance wire heater electrified regulation; When fluid temperature reaches setting value, export to power control device and stop heating signal, power control device makes resistance wire heater power-off, thus prevents the temperature incubation function of above-mentioned electric heater unit.
Further, described temperature detecting module comprises liquid temperature detection unit and power control device temperature detecting unit, power control device temperature detecting unit (can be NTC thermistor) monitors the operating temperature of power control device, in case power control device Yin Wendu is too high and lost efficacy, thus ensure the usage safety performance of above-mentioned electric heater unit.
Further; described control circuit board is outside equipped with containment vessel; containment vessel is positioned at described insulation tube; containment vessel comprises at the bottom of cap and shell; thermal insulation layer is provided with in cap; effectively prevent three kinds of modes (conduction, convection current, radiation) of heat trnasfer, ensure that temperature detecting module testing result is true and reliable.
Further, described heating control circuit plate also comprises display module, the input of described display module connects the output of single chip control module, the testing result of capacitive sensing module and temperature detecting module is analyzed by single chip control module, and by this analysis result input display module, when electric heater unit does not immerse in liquid, display module display " OF ", when electric heater unit immerses in liquid, display module display current liquid temperature or set temperature, thus make user intuitively can learn the work of liquid condition and electric heater unit in Shui nationality casing, display module is preferably two LED characters and divides 4 dynamic scans, the power consumption of display module is reduced with this.
Further, described heating control circuit plate also comprises power module, and described power module comprises resistance-capacitance depressurization unit and three terminal integrated voltage stabilizer, for single chip control module and temperature detecting module provide stable operating voltage.
For an electrical heating method for Shui nationality casing, comprise the following steps:
The electric capacity of step 1, capacitive sensing module acquires insulation tube external space medium, and its result is exported to one-chip computer module process;
Step 2, single chip processing module detect the capacitance integral time of insulation tube external space medium, if the time of integration is less than threshold value, then testing result is inputted single chip control module by temperature detecting module tracer liquid temperature, when fluid temperature is lower than design temperature range lower limit, single chip control module exports pulse, by controlling power control device, resistance wire heater is energized, single chip control module is simultaneously to display module output signal, and display module shows current liquid temperature or set temperature; When fluid temperature reaches design temperature range limit, the pulse of single chip control module no-output, make resistance wire heater power-off by controlling power control device, single chip control module is simultaneously to display module output signal, and display module shows current liquid temperature or set temperature;
If step 3 is greater than threshold value the time of integration, then single chip processing module no pulse exports, and control module stops heating, exports stop signal to display module simultaneously, display module display " OF ".
The distribution capacity of capacitive sensing module acquires insulation tube external space medium of above-mentioned heating means by being isolated by insulation tube, and the time of integration of integrating capacitor is detected by single chip control module, judge whether to be energized to resistance wire heater by the length comparing the time of integration, thus achieve non-contact detection electric heater unit and whether immerse technique effect in liquid, and electric heater unit immerse liquid time integrating capacitor the time of integration shorter, therefore said method high efficient detection can go out the change of insulation tube external space dielectric distribution electric capacity, make the reaction of heater sensitiveer.
Beneficial effect of the present invention:
A kind of Shui nationality casing electricity consumption heater provided by the invention and method thereof, the distribution capacity of insulation tube external space medium is detected by the capacitive sensing module be arranged in insulation tube, the time of integration of the variable effect integrating capacitor of distribution capacity, by the time of integration of microprocessor detect integrating capacitor, thus detect whether electric heater unit immerses in liquid in a non contact fashion accurately and efficiently, and determine whether be energized to resistance wire heater thus, thus ensured the mission safety of electric heater unit, also extend its service life.
Accompanying drawing explanation
Accompanying drawing 1 is the overall structure schematic diagram of one embodiment of the present invention;
Accompanying drawing 2 is the theory diagram of one embodiment of the present invention;
Accompanying drawing 3 is heating control circuit plate schematic diagram in one embodiment of the present invention;
Accompanying drawing 4 is cap schematic diagram in one embodiment of the present invention;
Accompanying drawing 5 is schematic diagram at the bottom of one embodiment of the present invention mesochite;
Accompanying drawing 6 is the heating control circuit plate schematic diagram of one embodiment of the present invention.
In figure: 1-insulation tube, 2-heating control circuit plate, 3-resistance wire heater, 21-sheet metal, 22-spring, 23-digital display unit, 24-temperature detecting module, 25-power control device, 41-cap, at the bottom of 42-shell, 43-thermal insulation layer.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment 1:
As shown in Fig. 1 ~ Fig. 6, a kind of Shui nationality casing electricity consumption heater, comprise insulation tube 1 and the heating control circuit plate 2, the resistance wire heater 3 that are positioned at insulation tube, heating control circuit plate 2 comprises power module, single chip control module, voltage zero-cross detection module, capacitive sensing module, temperature detecting module 24, power control device 25 and display module 23.
Power module comprises the resistance-capacitance depressurization unit be made up of resistance R16, electric capacity C1, diode D2, and three terminal integrated voltage stabilizer U1(is as 78L05), civil power is after R16, C1 step-down, by 1 pin inputting U1 after electrochemical capacitor E2 and Zener diode DW1 filtering decoupling, + 5V the voltage of 3 pin output voltages stable output after electrochemical capacitor E1 and electric capacity C2 filtering decoupling of U1, the VDD pin of access single-chip microcomputer, as the operating voltage of single chip control module and temperature detecting module 24.
Single chip control module selects common single-chip microcomputer, for detect with insulation tube external space dielectric distribution electric capacity change, control power control device, tracer liquid temperature etc., Special electric also can be selected to hold and to touch the time of integration that chip (as ASC0101B, TTP223B etc.) detects insulation tube external space electric capacity.
Power control device 25 is preferably controllable silicon Q1, and controllable silicon Q1 has good switching characteristic, can in time, accurately, the break-make of controlling resistance silk heater 3 rapidly.
Voltage zero-cross detection module comprises resistance R18, R15, civil power accesses single-chip microcomputer PD1 pin after R18, R15 current limliting, civil power zero passage situation is detected by voltage zero-cross detection module, and provide interrupt requests to single-chip microcomputer, single-chip microcomputer obtains the home signal of control cycle, single-chip microcomputer controls silicon controlled conducting by selecting the suitable angle of flow, by the delay time regulating single-chip microcomputer to export zero-crossing pulse, control the ON time of controllable silicon Q1, thus regulate the power output of controllable silicon Q1, to realize break-make and the power thereof of controlling resistance silk heater.In addition, regulated the thermostat temperature of this device by & off switch KEY, realize being circularly set of one-key operation heating-up temperature.
Capacitive sensing module by the sheet metal 21 of certain area as detecting electrode, sheet metal 21 inner surface is connected with spring 22, spring 22 other end is connected on heating control circuit plate 2, by the distorting tension of spring 22, sheet metal 21 is made to be close to insulation tube 1 inwall, make sheet metal 21 the distribution capacity change of insulation tube 1 external space medium more sensitively can be detected, and this design is convenient to assembly and disassembly of the present invention, also can with being affixed on the metal film of insulation tube 1 inwall as detecting electrode.After sheet metal 21 connects integrating capacitor C3, access single-chip microcomputer PA2 pin, between single-chip microcomputer PA1 pin access sheet metal and integrating capacitor C3.Gathered the distribution capacity of insulation tube 1 external space medium by sheet metal 21, the time of integration of the variable effect integrating capacitor C3 of distribution capacity, by the time of integration of microprocessor detect integrating capacitor C3, and this time of integration is set to threshold value; When this electric heater unit immerses in liquid, sheet metal 21 detects that the distribution capacity of insulation tube 1 external space medium becomes large, and its charging rate also becomes large, and the time of integration of microprocessor detect integrating capacitor diminishes relative to above-mentioned threshold value.Therefore, single-chip microcomputer detects the change of insulation tube 1 external space dielectric distribution electric capacity by sheet metal 21, detect the time of integration of integrating capacitor C3 again, and by this time of integration compared with the threshold value of setting, when being equal to or greater than threshold value the time of integration, just can be judged as that electric heater unit does not immerse in liquid, single-chip microcomputer stops exporting zero-crossing pulse to controllable silicon Q1, controllable silicon Q1 ends, resistance wire heater 3 power-off.
Temperature detecting module 24 provides+5V voltage by power module, comprises the liquid temperature detection unit be made up of thermistor R1, resistance R3 and the power control device temperature detecting unit be made up of thermistor R2, resistance R5.Gather electrical node AD1 place voltage access single-chip microcomputer PD5 pin, as working as precursor temperature value, this result compares with the temperature range of setting by single-chip microcomputer, if the low design temperature range lower limit of fluid temperature detected, then single-chip microcomputer exports zero-crossing pulse to controllable silicon Q1, controllable silicon Q1 conducting, resistance wire heater 3 electrified regulation; If the fluid temperature detected reaches design temperature range limit, single-chip microcomputer stops exporting zero-crossing pulse to controllable silicon Q1, and controllable silicon Q1 ends, resistance wire heater 3 power-off.Gather electrical node AD2 place voltage access single-chip microcomputer PD6 pin, detect the operating temperature surveying current controllable silicon Q1, this result compares with the temperature of setting by single-chip microcomputer, if testing result reaches preset temperature, single-chip microcomputer stops exporting zero-crossing pulse to controllable silicon Q1, controllable silicon Q1 ends, thus ensures the reliable output of controllable silicon Q1, ensures the safety of circuit simultaneously.
Display module comprises digital display unit 23 and heating indicating member, wherein digital display unit 23 is made up of double figures code pipe ZF and current-limiting resistance R7 ~ R13, by dividing 4 scanning to 2 LED characters, effectively reduce the power consumption of display module, the testing result of capacitive sensing module and temperature detecting module 24 is analyzed by single-chip microcomputer, and by this analysis result input display module, when electric heater unit does not immerse in liquid, digital display unit 23 shows " OF ", when electric heater unit immerses in liquid, digital display unit 23 shows current liquid temperature or set temperature, thus make user intuitively can learn the duty of liquid condition and electric heater unit in Shui nationality casing.Heating indicating member comprises LED 1 and the diode D1 of parallel connected in reverse phase, and work as controlled silicon conducting, resistance wire heater 3 electrified regulation, LED 1 is bright, is convenient to the duty that user intuitively sees resistance wire heater 3.
In the containment vessel that above-mentioned heating control circuit plate 2 is placed in insulation, heat-barrier material is made; containment vessel is by 42 forming at the bottom of cap 41 and shell; at the bottom of preferred cap 41 and shell, 42 combine cylindrically; in cap 41, the distribution of heating control circuit plate 2 device is provided with 4 thermal insulation layers 43; effectively prevent three kinds of modes (conduction, convection current, radiation) of heat trnasfer, ensure that temperature detecting module 24 testing result is true and reliable.
Use the heating means of above-mentioned electric heater unit, comprise the following steps:
Step 1, sheet metal 21 gather the distribution capacity of insulation tube 1 external space medium, and its result is exported to single-chip microcomputer;
The time of integration of the integrating capacitor C3 that step 2, microprocessor detect and sheet metal 21 is in parallel, the i.e. capacitance integral time of insulation tube 1 external space medium, if the time of integration is equal to or greater than threshold value, then single-chip microcomputer stops exporting zero-crossing pulse to controllable silicon, controllable silicon ends, resistance wire heater 3 power-off, and single-chip microcomputer exports stop signal to display module simultaneously, digital display unit 23 shows " OF ", and the LED 1 of heating indicating member goes out;
If step 3 is less than threshold value the time of integration, testing result is inputted single-chip microcomputer by thermistor tracer liquid temperature, when fluid temperature is lower than design temperature range lower limit, single-chip microcomputer exports zero-crossing pulse to controllable silicon Q1, controllable silicon Q1 conducting, resistance wire heater 3 electrified regulation, single-chip microcomputer outputs signal to display module simultaneously, digital display unit 23 shows current liquid temperature or set temperature, and LED 1 is bright; When fluid temperature reaches design temperature range limit, single-chip microcomputer stops exporting zero-crossing pulse to controllable silicon Q1, controllable silicon Q1 ends, resistance wire heater 3 power-off, single chip control module outputs signal to display module simultaneously, digital display unit 23 shows current liquid temperature, and LED 1 goes out.
The present invention is by being arranged on sheet metal 21 in insulation tube 1 as detecting electrode, detect the distribution capacity of insulation tube 1 external space medium, and by time of integration of the microprocessor detect integrating capacitor in parallel with detecting electrode, thus detect whether heater immerses in liquid in a non contact fashion, not only lead to and enough effectively prevent electric heater unit dry combustion method, also solve the corrosion-prone technical problem of contact measurement electrode, reduce the potential safety hazard of electric heater unit, extend its service life, and reduce the cost of manufacture of electric heater unit as detecting electrode with sheet metal 21.In addition, when above-mentioned electric heater unit immerses liquid, the time of integration of integrating capacitor C3 is shorter, and namely threshold value is less, therefore sensitivity of the present invention is higher.
As mentioned above, then well the present invention can be realized.
Claims (10)
1. a Shui nationality casing electricity consumption heater, it is characterized in that: comprise insulation tube (1) and be positioned at the heating control circuit plate (2) of insulation tube, described heating control circuit plate (2) comprises capacitive sensing module and single chip control module, described capacitive sensing module comprises detecting electrode and integrating capacitor, the described detecting electrode I/O port that access single chip control module in parallel with integrating capacitor, described capacitive sensing module is for gathering the distribution capacity of insulation tube (1) external space medium, and described single chip control module is for detecting the time of integration of integrating capacitor.
2. a kind of Shui nationality casing electricity consumption heater according to claim 1, is characterized in that: described detecting electrode is close to the inwall of described insulation tube (1).
3. Shui nationality casing electricity consumption heater according to claim 2, is characterized in that: described detecting electrode is sheet metal (21) or metal film.
4. a kind of Shui nationality casing electricity consumption heater according to claim 3, is characterized in that: described sheet metal (21) is fixedly connected on described heating control circuit plate (2) by spring (22).
5. a kind of Shui nationality casing electricity consumption heater according to any one of Claims 1 to 4, it is characterized in that: described heating control circuit plate (2) also comprises temperature detecting module (24) and power control device (25), described temperature detecting module (24) output connects the input of single chip control module, the input of described power control device (25) connects the output of single chip control module, and described power control device (25) output is connected with resistance wire heater (3).
6. a kind of Shui nationality casing electricity consumption heater according to claim 5, is characterized in that: described temperature detecting module (24) comprises liquid temperature detection unit and power control device temperature detecting unit.
7. the Shui nationality casing electricity consumption heater according to any one of Claims 1 to 4; it is characterized in that: described control circuit board (2) is outside equipped with containment vessel; containment vessel is positioned at described insulation tube; containment vessel comprises at the bottom of cap (41) and shell (42), is provided with thermal insulation layer (43) in cap (42).
8. a kind of Shui nationality casing electricity consumption heater according to any one of Claims 1 to 4, it is characterized in that: described heating control circuit plate (2) also comprises display module, described display module comprises digital display unit (23) and heating indicating member, the input of digital display unit (23) connects the output of single chip control module, and heating indicating member is in parallel with described resistance wire heater (3).
9. a kind of Shui nationality casing electricity consumption heater according to any one of Claims 1 to 4, is characterized in that: described heating control circuit plate (2) also comprises power module, and described power module comprises resistance-capacitance depressurization unit and three terminal integrated voltage stabilizer.
10. for an electrical heating method for Shui nationality casing, it is characterized in that, comprise the following steps:
Step 1, capacitive sensing module gather the distribution capacity of insulation tube external space medium by detecting electrode, and its result is exported to single chip processing module;
The time of integration of integrating capacitor in step 2, single chip processing module Detection capacitance induction module, if the time of integration is less than threshold value, then testing result is inputted single chip control module by temperature detecting module tracer liquid temperature, when fluid temperature is lower than design temperature range lower limit, single chip control module exports pulse, by controlling power control device, resistance wire heater is energized, single chip control module is simultaneously to display module output signal, and display module shows current liquid temperature or set temperature; When fluid temperature reaches design temperature range limit, the pulse of single chip control module no-output, control power control device and make resistance wire heater power-off, single chip control module is simultaneously to display module output signal, and display module shows current liquid temperature or set temperature;
If step 3 is greater than threshold value the time of integration, then single chip processing module no pulse exports, and heating control module stops heating, exports stop signal to display module simultaneously, display module display " OF ".
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108601123A (en) * | 2017-11-13 | 2018-09-28 | 成都航空职业技术学院 | A kind of variable frequency induction heater circuit |
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| CN202853050U (en) * | 2012-10-13 | 2013-04-03 | 邯郸派瑞电器有限公司 | Detection device for preventing input/output (I/O) port humidifier from drying out |
| CN104349520A (en) * | 2013-08-02 | 2015-02-11 | 陈彦杰 | Heating rod capable of being powered off at water-leaving moment (free from dry burning) |
| CN203538137U (en) * | 2013-11-11 | 2014-04-16 | 欧金安 | Heater of aquarium |
| CN104582041A (en) * | 2014-03-04 | 2015-04-29 | 湖南新韶光电器有限公司 | Automatic power-off anti-dry heating pipe |
| CN204301317U (en) * | 2014-11-14 | 2015-04-29 | 中国航空工业集团公司西安飞机设计研究所 | A kind of anti-dry burning device of aircraft airborne electric heater |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108601123A (en) * | 2017-11-13 | 2018-09-28 | 成都航空职业技术学院 | A kind of variable frequency induction heater circuit |
| CN108601123B (en) * | 2017-11-13 | 2021-03-23 | 成都航空职业技术学院 | A frequency conversion induction heating circuit |
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