CN107024945A - A kind of electronic type temperature adjustment rod - Google Patents
A kind of electronic type temperature adjustment rod Download PDFInfo
- Publication number
- CN107024945A CN107024945A CN201710403628.XA CN201710403628A CN107024945A CN 107024945 A CN107024945 A CN 107024945A CN 201710403628 A CN201710403628 A CN 201710403628A CN 107024945 A CN107024945 A CN 107024945A
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- Prior art keywords
- temperature
- circuit
- temperature control
- power
- electronic type
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Resistance Heating (AREA)
Abstract
The invention discloses a kind of electronic type temperature adjustment rod, it is related to technical field of temperature control, including external shell, it is fixed on the metal sensing rod for temperature and temperature control circuit board of the enclosure interior, NTC temperature sensors built in the metal sensing rod for temperature, the NTC temperature sensors access the temperature control circuit board, and the housing afterbody accesses 220V alternating currents；The temperature control circuit board mainly includes power-switching circuit, temperature regulation circuit and output control circuit；The power-switching circuit includes rc filter circuit, rectification circuit, capacitor filter and the three-terminal voltage-stabilizing power supply being sequentially connected；The temperature regulation circuit is temperature control chip and its peripheral circuit；The output control circuit is control relay circuit, the contact access 220V output ends of relay, the break-make for controlling heater circuit.The temperature control curve of the present invention is more smooth, and the heating effect and the thermal efficiency of electric chafing dish are had a distinct increment.
Description
Technical field
The present invention relates to technical field of temperature control, especially a kind of electronic type temperature adjustment rod.
Background technology
Temperature adjustment rod is the supporting core component of existing market hot-sale products electric chafing dish.Traditional temperature adjustment rod is mechanical tune
Warm rod, has that temperature control is inaccurate, the temperature difference is bigger than normal, resetting time always, and these problems cause electric chafing dish production
The short slab of product.
Use the Integral electric chafing dish of extrusion process on the market at present, what is used substantially is all that mechanical temperature adjustment rod does temperature
Control, temperature control is carried out using bimetal strip thermostat, and the temperature of sheet metal direct feeling product bottom reaches default temperature
After degree, shell fragment deformation triggers movable contact action, so as to power off；After temperature returns to the return temperature of sheet metal, shell fragment is extensive
It is multiple, movable contact closure, electrified regulation.Preset temperature controls the deformation extent of shell fragment to adjust by knob.Mechanical temperature-sensitive is former
Reason reaches expected temperature setting effect by air borne temperature completely, there is excessive environmental impact factor, so as to control
Control aspect effect deviation processed.
The content of the invention
In view of the above-mentioned problems, the present invention provides a kind of electronic type temperature adjustment rod.
A kind of electronic type temperature adjustment rod, including external shell, are fixed on metal sensing rod for temperature and the temperature control of the enclosure interior
Circuit board processed, the metal sensing rod for temperature is fixed on the housing forward end, and is stretched out from the housing head, the metal sensing rod for temperature
Built-in NTC temperature sensors, the NTC temperature sensors access the temperature control circuit board, the housing afterbody access
220V alternating currents；
The temperature control circuit board mainly includes power-switching circuit, temperature regulation circuit and output control circuit；The electricity
Power-switching circuit includes rc filter circuit, rectification circuit, capacitor filter and the three-terminal voltage-stabilizing power supply being sequentially connected；It is described
Temperature regulation circuit is temperature control chip and its peripheral circuit；The output control circuit is control relay circuit, relay
The contact access 220V output ends of device, the break-make for controlling heater circuit；
The energization pins of the temperature control chip connect the power-switching circuit output end by power switch button, by institute
State power-switching circuit and working power is provided；The NTC temperature sensors access the temperature control chip input, and temperature adjustment is pressed
It is bonded enter the temperature control chip control end, the temperature control chip output end accesses the output control circuit, its
Signal control end connects power supply indicator and duration and degree of heating indicator lamp.
Further, the three-terminal voltage-stabilizing power supply uses circuit of three-terminal voltage-stabilizing integrated LM7805.
Further, the power-switching circuit input is parallel with piezo-resistance ZNR1.
Further, the temperature control chip output end access NPN triode base stage, the NPN triode colelctor electrode
Control end is connected, its grounded emitter, the Control end is parallel with diode IN4007.
Further, the temperature control circuit board is provided with earth terminal, and the earth terminal connects the housing.
Beneficial effects of the present invention：Temperature control curve is more smooth, have to the heating effect and the thermal efficiency of electric chafing dish compared with
Big lifting.
Brief description of the drawings
Fig. 1 is temperature adjustment rod cut-away view；
Fig. 2 is power-switching circuit circuit diagram；
Fig. 3 is temperature control chip and its peripheral circuit diagram；
Fig. 4 is output control circuit figure；
Fig. 5 is temperature adjustment rod panel schematic diagram；
Fig. 6 is temperature comparisons' schematic diagram of electronic type temperature adjustment rod and mechanical temperature adjustment rod.
Embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.Embodiments of the invention are
Provided for the sake of example and description, and be not exhaustively or limit the invention to disclosed form.A lot
Modifications and variations are obvious for the ordinary skill in the art.Select and description embodiment is in order to more preferable
Illustrate the principle and practical application of the present invention, and make one of ordinary skill in the art it will be appreciated that the present invention is so as to design suitable
In the various embodiments with various modifications of special-purpose.
Embodiment 1
A kind of electronic type temperature adjustment rod, as shown in figure 1, including external shell 10, the metal temperature-sensitive being fixed on inside the housing 10
Rod 20 and temperature control circuit board 30, the metal sensing rod for temperature 20 are fixed on the front end of housing 10, and from the housing 10
Portion is stretched out, NTC temperature sensors built in the metal sensing rod for temperature 20, and the NTC temperature sensors access the temperature control electricity
Road plate 30, the afterbody of housing 10 accesses 220V alternating currents.
The temperature control circuit board mainly includes power-switching circuit, temperature regulation circuit and output control circuit；Institute
Power-switching circuit is stated, as shown in Fig. 2 including the rc filter circuit being sequentially connected（The circuit that R6, R7, C4 are constituted）, rectification
Circuit（Rectification chip D1）, capacitor filter（Electric capacity CE1）With three-terminal voltage-stabilizing power supply（Integrated chip 7805）；The temperature is adjusted
Road economize on electricity for temperature control chip and its peripheral circuit, as shown in Figure 3；The output control circuit is control relay circuit,
As shown in figure 4, the contact access 220V output ends of relay, the break-make for controlling heater circuit.
The energization pins of the temperature control chip are exported by the power switch button K2 connections power-switching circuit
VCC is held, working power is provided by the power-switching circuit；It is defeated that the NTC temperature sensors access the temperature control chip
Enter and hold TEMP, temperature adjustment button K1 accesses the control end KEY-IO of the temperature control chip, the temperature control chip output end
REL accesses the output control circuit, its signal control end connection power supply indicator and duration and degree of heating indicator lamp.The temperature control core
Piece is using existing chip on the market.Fig. 5 is temperature adjustment rod panel schematic diagram.
In the present embodiment, the NTC temperature sensors access the temperature control circuit board, two by 2P binding posts
Line is respectively temperature detection signal line and power line, and temperature detection signal is sent to temperature-control circuit by temperature detection signal line
The power supply of temperature control circuit board is supplied to NTC temperature sensors by plate, power line.
The three-terminal voltage-stabilizing power supply uses circuit of three-terminal voltage-stabilizing integrated LM7805；The power-switching circuit input is in parallel
There is piezo-resistance ZNR1, the effect of its circuit protection.
The temperature control chip output end accesses NPN triode Q1 base stage, the NPN triode Q1 colelctor electrode connection after
Electrical equipment control end J1, its grounded emitter, the Control end J1 is parallel with D3 diodes IN4007.
The temperature control circuit board is provided with earth terminal 40, and the earth terminal connects the housing 10.
Temperature control curve is can be seen that from temperature comparisons' schematic diagram 6 of electronic type temperature adjustment rod and mechanical temperature adjustment rod more
Plus it is smooth, the heating effect and the thermal efficiency of electric chafing dish are had a distinct increment.
Obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, this area and the those of ordinary skill in the related art institute on the premise of creative work is not made
The every other embodiment obtained, should all belong to the scope of protection of the invention.
Claims (5)
1. a kind of electronic type temperature adjustment rod, including external shell, are fixed on the metal sensing rod for temperature and temperature control of the enclosure interior
Circuit board, the metal sensing rod for temperature is fixed on the housing forward end, and is stretched out from the housing head, it is characterised in that：It is described
NTC temperature sensors built in metal sensing rod for temperature, the NTC temperature sensors access the temperature control circuit board, the housing
Afterbody accesses 220V alternating currents；
The temperature control circuit board mainly includes power-switching circuit, temperature regulation circuit and output control circuit；The electricity
Power-switching circuit includes rc filter circuit, rectification circuit, capacitor filter and the three-terminal voltage-stabilizing power supply being sequentially connected；It is described
Temperature regulation circuit is temperature control chip and its peripheral circuit；The output control circuit is control relay circuit, relay
The contact access 220V output ends of device, the break-make for controlling heater circuit；
The energization pins of the temperature control chip connect the power-switching circuit output end by power switch button, by institute
State power-switching circuit and working power is provided；The NTC temperature sensors access the temperature control chip input, and temperature adjustment is pressed
It is bonded enter the temperature control chip control end, the temperature control chip output end accesses the output control circuit, its
Signal control end connects power supply indicator and duration and degree of heating indicator lamp.
2. electronic type temperature adjustment rod according to claim 1, it is characterised in that：The three-terminal voltage-stabilizing power supply uses three-terminal voltage-stabilizing
Integrated circuit LM7805.
3. electronic type temperature adjustment rod according to claim 1, it is characterised in that：The power-switching circuit input is parallel with
Piezo-resistance ZNR1.
4. electronic type temperature adjustment rod according to claim 1, it is characterised in that：The temperature control chip output end access
NPN triode base stage, the NPN triode collector connection relay control end, its grounded emitter, the Control
End is parallel with diode IN4007.
5. the electronic type temperature adjustment rod according to claim 1-4 any one, it is characterised in that：The temperature control circuit board
Provided with earth terminal, the earth terminal connects the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710403628.XA CN107024945A (en) | 2017-06-01 | 2017-06-01 | A kind of electronic type temperature adjustment rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710403628.XA CN107024945A (en) | 2017-06-01 | 2017-06-01 | A kind of electronic type temperature adjustment rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107024945A true CN107024945A (en) | 2017-08-08 |
Family
ID=59529338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710403628.XA Pending CN107024945A (en) | 2017-06-01 | 2017-06-01 | A kind of electronic type temperature adjustment rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107024945A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989721A (en) * | 2017-12-08 | 2018-05-04 | 河北中瓷电子科技有限公司 | Integrated heater and use its filter and engine |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0743666B1 (en) * | 1995-05-19 | 1999-01-27 | Cotherm | Control thermostat comprising probe with security means |
| CN101294851A (en) * | 2007-04-27 | 2008-10-29 | 厦门灿坤实业股份有限公司 | Electronic temperature sensing stick |
| CN201319149Y (en) * | 2008-11-15 | 2009-09-30 | 厦门灿坤实业股份有限公司 | Electronic temperature-sensing bar control circuit |
| CN203289078U (en) * | 2013-04-12 | 2013-11-13 | 深圳市润唐智能生活电器有限公司 | Electronic temperature-sensing rod |
| CN203812116U (en) * | 2014-01-22 | 2014-09-03 | 漳州灿坤实业有限公司 | Electrical heating control system and electronic temperature-sensitive rod designed with the electrical heating control system |
| WO2014166098A1 (en) * | 2013-04-12 | 2014-10-16 | 深圳市润唐智能生活电器有限公司 | Electronic temperature-sensing rod |
| CN205485685U (en) * | 2016-01-29 | 2016-08-17 | 浙江理工大学 | Intelligence control by temperature change stick based on thermoelectric effect |
| CN207020557U (en) * | 2017-06-01 | 2018-02-16 | 中山市勤峰电器有限公司秋浦分公司 | A kind of electronic type temperature adjustment rod |
-
2017
- 2017-06-01 CN CN201710403628.XA patent/CN107024945A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0743666B1 (en) * | 1995-05-19 | 1999-01-27 | Cotherm | Control thermostat comprising probe with security means |
| CN101294851A (en) * | 2007-04-27 | 2008-10-29 | 厦门灿坤实业股份有限公司 | Electronic temperature sensing stick |
| CN201319149Y (en) * | 2008-11-15 | 2009-09-30 | 厦门灿坤实业股份有限公司 | Electronic temperature-sensing bar control circuit |
| CN203289078U (en) * | 2013-04-12 | 2013-11-13 | 深圳市润唐智能生活电器有限公司 | Electronic temperature-sensing rod |
| WO2014166098A1 (en) * | 2013-04-12 | 2014-10-16 | 深圳市润唐智能生活电器有限公司 | Electronic temperature-sensing rod |
| CN203812116U (en) * | 2014-01-22 | 2014-09-03 | 漳州灿坤实业有限公司 | Electrical heating control system and electronic temperature-sensitive rod designed with the electrical heating control system |
| CN205485685U (en) * | 2016-01-29 | 2016-08-17 | 浙江理工大学 | Intelligence control by temperature change stick based on thermoelectric effect |
| CN207020557U (en) * | 2017-06-01 | 2018-02-16 | 中山市勤峰电器有限公司秋浦分公司 | A kind of electronic type temperature adjustment rod |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989721A (en) * | 2017-12-08 | 2018-05-04 | 河北中瓷电子科技有限公司 | Integrated heater and use its filter and engine |
| CN107989721B (en) * | 2017-12-08 | 2024-04-02 | 河北中瓷电子科技有限公司 | Integrated heater and filter and engine using same |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170808 |
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| RJ01 | Rejection of invention patent application after publication |