CN2174727Y - Electronic temperature controller for electric-heating warming device - Google Patents
Electronic temperature controller for electric-heating warming device Download PDFInfo
- Publication number
- CN2174727Y CN2174727Y CN 93238375 CN93238375U CN2174727Y CN 2174727 Y CN2174727 Y CN 2174727Y CN 93238375 CN93238375 CN 93238375 CN 93238375 U CN93238375 U CN 93238375U CN 2174727 Y CN2174727 Y CN 2174727Y
- Authority
- CN
- China
- Prior art keywords
- electric heating
- heating device
- triode thyristor
- bidirectional triode
- electronic temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Control Of Resistance Heating (AREA)
Abstract
The anode of the bidirectional thyristor of the utility model is connected with the power cord of an electrical heating element in series; the cathode of the bidirectional thyristor is connected with the electrical heating element; a PTC heat-sensitive element is connected between the control electrode and the cathode of the bidirectional thyristor in parallel; the PTC heat-sensitive element is installed on the temperature sensing position of an electric heating warmer. The utility model has the advantages of simple structure, low cost and high reliability, and can be used for the accuracy control of the heating amount of the electric heating warmer.
Description
The utility model is relevant with electrical equipment overheating protection and temperature control equipment, and is especially relevant with overtemperature protection system with the temperature control of electric heating device.
Electric heating device requires permanent at short notice power to add heat.When the adding heat reached set quota, warmer should in time cut off the power supply.At present, electric heating device adopts bimetal strip thermostat.This temperature controller is contained on the interior sheet metal of electric heating device, forces together after sheet metal and the electrical heating wire insulation.During the electric heating device energising, the bimetallic strip heated bending of bimetallic temperature controller drives a leverage, deenergization.Because this temperature controller working temperature is very high, the leverage thermal deformation is big, and heat expansion is stuck easily, makes action delay or malfunctioning, and therefore, reliability is not high, and it is inaccurate to add heat, easily because of the overheated accident that causes.
The purpose of this utility model provides a kind of simple in structure, and the reliability height is convenient to maintenance, and the life-span is long, and accurately control adds the electric heating device electronic temperature control unit of heat.
Bidirectional triode thyristor anode series of the present utility model is associated on the heating power lead, and the bidirectional triode thyristor negative electrode connects with heating.The PTC thermal sensing element is connected in parallel between the control utmost point and negative electrode of bidirectional triode thyristor.The PTC thermal sensing element is installed on the temperature-sensitive position of electric heating device.
Bidirectional triode thyristor of the present utility model can be connected on the power lead of electric heating device outside.
PTC thermal sensing element of the present utility model can be fixed on the heat-storing material of electric heating device or be fixed on the temperature coupongs, and the temperature coupongs are fixed on the heat-storing material.
Heating of the present utility model can be the 300-600W heating wire, and PTC is MZ23, and bidirectional triode thyristor is BTA06600A.
When electric heating device plugged in, the PTC thermal sensing element that is connected in parallel between bidirectional triode thyristor control utmost point G and the anode T2 provided trigger current to bidirectional triode thyristor, bidirectional triode thyristor T1, the conducting of T2 interpolar, electric heating device energising heating.When adding heat and reach some, PTC thermal sensing element temperature raises and reaches " Curie point " temperature, and resistance rises to tens thousand of times of initial value suddenly, the bidirectional triode thyristor trigger current is reduced to it below switch value, controllable silicon ends, the electric heating device outage, and heating stops.As long as choose reasonable PTC thermal sensing element and riding position thereof can reach the purpose that accurate control adds heat.
The utility model control circuit only needs two electronic components, and is simple in structure, cost is low, reliability is high, can accurately control the heat that adds of electric heating device.Experimental result shows that controlling the error that adds heat can be less than 1%.Bidirectional triode thyristor of the present utility model is connected on and had both improved working environment, easy access again on the external power cord.
Following is the utility model accompanying drawing:
Fig. 1 is circuit theory diagrams of the present utility model
Fig. 2 is the installation site figure of the utility model in electric heating device
Fig. 3 is three kinds of installation site synoptic diagram of bidirectional triode thyristor.
Following is embodiment of the present utility model:
Embodiment 1:
Bidirectional triode thyristor 1 is contained on the inwall of electric heating device shell 6 or other position that helps dispelling the heat.PTC thermal sensing element 2 is contained on the temperature coupongs 3 of metal or nonmetallic materials.Temperature coupongs 3 are installed on the interior accumulation of heat refractory brick 4 of electric heating device, and heating 7 is contained in the middle of two refractory brick 4.But the PTC thermal sensing element is also on on-line equipment other temperature-sensitive position in accumulation of heat refractory brick or electric heating device.PTC thermal sensing element, bidirectional triode thyristor and supply socket 5 are by connection shown in Figure 1.Connected modes such as the fixing available bolt of PTC and bidirectional triode thyristor is connected, and rivets, and sheet metal compresses, and is bonding.PTC is MZ23, and two each controllable silicon are BTA06600A, and heating adopts the 300-600W heating wire.
Embodiment 2:
The circuit structure of present embodiment and mounting means and embodiment 1 just are contained in bidirectional triode thyristor 1 on the circumscripted power line 10 together, perhaps are contained on the plug 8, perhaps are contained on the socket 9.
Claims (5)
1, electric heating device electronic temperature control unit, it is characterized in that the bidirectional triode thyristor anode series is associated on the heating power lead, the bidirectional triode thyristor negative electrode connects with heating, the PTC thermal sensing element is connected in parallel between the control utmost point and negative electrode of bidirectional triode thyristor, and the PTC thermal sensing element is installed on the temperature-sensitive position of electric heating device.
2, electric heating device electronic temperature control unit according to claim 1 is characterized in that bidirectional triode thyristor is connected on the power lead of electric heating device outside.
3, electric heating device electronic temperature control unit according to claim 1 is characterized in that the PTC thermal sensing element is fixed on the heat-storing material of electric heating device.
4, electric heating device electronic temperature control unit according to claim 1 is characterized in that the PTC thermal sensing element is fixed on the temperature coupongs, and the temperature coupongs are fixed on the heat-storing material.
5, according to claim 1 or 2 or 3 or 4 described electric heating device electronic temperature control units, it is characterized in that heating is the 300-600W heating wire, PTC is MZ23, bidirectional triode thyristor is BTA06600A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93238375 CN2174727Y (en) | 1993-03-24 | 1993-03-24 | Electronic temperature controller for electric-heating warming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93238375 CN2174727Y (en) | 1993-03-24 | 1993-03-24 | Electronic temperature controller for electric-heating warming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2174727Y true CN2174727Y (en) | 1994-08-17 |
Family
ID=33813119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93238375 Expired - Fee Related CN2174727Y (en) | 1993-03-24 | 1993-03-24 | Electronic temperature controller for electric-heating warming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2174727Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103049024A (en) * | 2013-01-01 | 2013-04-17 | 李兴宁 | Temperature controller |
-
1993
- 1993-03-24 CN CN 93238375 patent/CN2174727Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103049024A (en) * | 2013-01-01 | 2013-04-17 | 李兴宁 | Temperature controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |