CN201066935Y - Protection circuit of electrical heating device and electric heating device with this protection circuit - Google Patents
Protection circuit of electrical heating device and electric heating device with this protection circuit Download PDFInfo
- Publication number
- CN201066935Y CN201066935Y CNU2007201211630U CN200720121163U CN201066935Y CN 201066935 Y CN201066935 Y CN 201066935Y CN U2007201211630 U CNU2007201211630 U CN U2007201211630U CN 200720121163 U CN200720121163 U CN 200720121163U CN 201066935 Y CN201066935 Y CN 201066935Y
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- electric heating
- core body
- heating core
- protective circuit
- groove
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Abstract
The utility model relates to the protective circuit of an electric heating device and the electric heating device with the protective circuit. The protective circuit comprises a heat emitted device and a fuse which is serially connected with the heat emitted device; wherein, the protective circuit also comprises a temperature sensor, a controller and voltage regulator which is serially connected with the heat emitted device. The controller can control the movement of the voltage regulator according to the temperature signals of the heat emitted device sensed by the temperature sensor and adjust the voltage of the heat emitted device. So the controller can compare the temperature signals of the heat emitted device sensed by the temperature sensor with the temperature value preset in the controller and automatically adjust the voltage of the heat emitted device and limit the working temperature of the heat emitted device within a preset and safe range. The electric heating device comprises the protective circuit. The heat emitted device comprises a PTC electric heating core body and a protective frame arranged around the edge of the PTC electric heating core body. A groove is opened on the protective frame. The temperature sensor is attached to the bottom of the groove where is close to the PTC electric heating core body.
Description
Technical field
The utility model relates to a kind of protective circuit of electric heater unit, relates in particular to a kind of protective circuit of electric heater unit of A.T.C.
The utility model relates to a kind of electric heater unit with protective circuit, relates in particular to a kind of PTC (positive temperature coefficient thermal sensitive ceramic) electric heater unit with protective circuit of A.T.C.
Background technology
Electric heater unit is as environmental protection, heater element being widely used in people's production, life efficiently.Safety protective circuit is to guarantee that electric heater unit is normal, the requisite measure of trouble free service.China's utility model patent 200520054458.1 specifications disclose a kind of protective circuit of the components and parts that generate heat; this circuit finite temperature device, heater members, fuse are composed in series; and in described protective circuit, connected a PTC at least; when temperature, current anomaly situation appearred in circuit, PTC and temperature limiter, fuse played double protection to heater members.This protective circuit; because PTC and temperature limiter, fuse are connected in the operating circuit; and the voltage and current in the operating circuit is bigger; when the voltage and current fluctuation is big; PTC and temperature limiter are in the operating state of frequent cut-out and conducting; PTC and temperature limiter are short useful life, can not carry out temperature auto control.
China's utility model patent 200420054435.6 specifications disclose a kind of composite type PTC electric heater unit, comprise by electric heater main body and support fixation plate; The electric heater main body is made up of PTC heat generating component and both sides fixed mount, and the both sides of PTC heat generating component are installed in respectively in the fixed support of both sides, can be provided with thermal protector and fuse in the fixed support of both sides, are provided with insulation cover plate on the fixed support of both sides; The both sides fixed support all is installed on the support by the support fixation plate that matches with support.This composite type PTC electric heater unit is only by thermal protector and fuse protective circuit, and security performance is not high, and can not carry out temperature auto control.
The utility model content
But the utility model purpose is to provide a kind of protective circuit of electric heater unit of A.T.C.
For solving the problems of the technologies described above; the protective circuit of a kind of electric heater unit of the utility model; comprise heater members and the fuse of connecting with this heater members; wherein; it also comprises temperature sensor, controller and the voltage regulator of connecting with described heater members, and this controller can be controlled this voltage regulator action to adjust the voltage on this heater members to the temperature signal of described heater members according to this temperature sensor senses.Therefore, but the temperature signal of temperature sensor induction heating apparatus spare, controller compares according to this signal and the temperature value that is set in advance in this controller, adjusts the voltage on this heater members automatically, and this heater members is operated in temperature range setting, safety.
As a kind of improvement of the present utility model, wherein, it also comprises the relay that can recover temperature detect switch (TDS) and connect with described heater members, and this relay can recover this heater members of signal controlling of temperature detect switch (TDS) and the disconnection or the closure of power supply according to this.Because the operating voltage that can recover temperature detect switch (TDS) can be light current, and owing to there is controller to regulate voltage on the heater members automatically according to the signal of temperature sensor, this can recover just not opening and closing continually of temperature detect switch (TDS), and useful life is longer.
But the utility model purpose is also to provide a kind of electric heater unit with protective circuit of A.T.C.
For solving the problems of the technologies described above; electric heater unit of the present utility model; wherein; described heater members comprises PTC electric heating core body and is arranged on the protecting border of the periphery of this PTC electric heating core body; offer groove on this protecting border, described temperature sensor is fitted on the bottom adjacent with this PTC electric heating core body of this groove.After adopting said structure, the compact conformation of electric heater unit.
As a kind of improvement of the present utility model; wherein; offer a described groove on the outer surface of the two opposite sides of the protecting border of described PTC electric heating core body respectively; described fuse is fixed therein in the groove, described temperature sensor be fitted in another groove with this PTC electric heating core body bottom surface adjacent on.
As a kind of improvement of the present utility model; wherein; described heater members comprises PTC electric heating core body and is arranged on the protecting border of the periphery of this PTC electric heating core body; offer groove on this protecting border, the described temperature detect switch (TDS) that recovers is fitted on the bottom adjacent with this PTC electric heating core body of this groove.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Fig. 1 is the schematic diagram of the protective circuit of a kind of electric heater unit of the present utility model.
Fig. 2 is the perspective view of electric heater unit of the present utility model.
Fig. 3 is the perspective view of another angle of electric heater unit of the present utility model.
Embodiment
See also Fig. 1, the protective circuit of a kind of electric heater unit of the present utility model comprises heater members 1, fuse 2, relay 3, controller 4, temperature sensor 5, can recover temperature detect switch (TDS) 6, voltage regulator 7.
Can recover temperature detect switch (TDS) 6 is electrically connected with relay 3, but can recover temperature detect switch (TDS) 6 and be bimetal leaf recovery and protection device, when the temperature of sensing this heater members 4 surpasses the temperature of its trouble free service, but the bimetal leaf of bimetal leaf recovery and protection device disconnects, thereby relay 3 is disconnected heater members 1 and power supply; When the temperature of this heater members 4 drops to the temperature that is lower than its trouble free service, the bimetal leaf contact, thus relay 3 is communicated with heater members 1 with power supply, heater members 1 work.Guaranteed that like this heater members 1 always works in the state of temperature of trouble free service, and this operating voltage that can recover temperature detect switch (TDS) 6 is light current, its useful life is longer.
See also Fig. 2 and Fig. 3, a kind of electric heater unit with above-mentioned protective circuit of the present utility model, described heater members 1 comprise that PTC electric heating core body 10 and 16, four these protecting borders 16 of protecting border are arranged on the periphery of this PTC electric heating core body 10.Open on the outer surface of the protecting border 16 on the relative both sides of PTC electric heating core body 10 and be respectively equipped with a groove 17, these groove 17 1 ends offer wire casing 18.Can recover temperature detect switch (TDS) 6 and temperature sensor 5 is fitted on the bottom surface of one of them groove 17; the bottom surface of this groove 17 is adjacent with this PTC electric heating core body 10; first cover sheet, 19 glands can recover on temperature detect switch (TDS) 6 and the temperature sensor 5, and their line is drawn from this wire casing 18.Be fixed with fuse 2, the second cover sheets 15 glands and protect this fuse 2 on another the bottom surface of groove 17 on fuse 2, the line of this fuse 2 is drawn from this wire casing 18.
Claims (5)
1. the protective circuit of an electric heater unit; comprise heater members and the fuse of connecting with this heater members; it is characterized in that: it also comprises temperature sensor, controller and the voltage regulator of connecting with described heater members, and this controller can be controlled this voltage regulator action to adjust the voltage on this heater members to the temperature signal of described heater members according to this temperature sensor senses.
2. the protective circuit of a kind of electric heater unit according to claim 1; it is characterized in that: it also comprises the relay that can recover temperature detect switch (TDS) and connect with described heater members, and this relay can recover this heater members of signal controlling of temperature detect switch (TDS) and the disconnection or the closure of power supply according to this.
3. electric heater unit with the described protective circuit of claim 1; it is characterized in that: described heater members comprises PTC electric heating core body and is arranged on the protecting border of the periphery of this PTC electric heating core body; offer groove on this protecting border, described temperature sensor is fitted on the bottom adjacent with this PTC electric heating core body of this groove.
4. electric heater unit according to claim 3; it is characterized in that: offer a described groove on the outer surface of the two opposite sides of the protecting border of described PTC electric heating core body respectively; described fuse is fixed therein in the groove, described temperature sensor be fitted in another groove with this PTC electric heating core body bottom surface adjacent on.
5. electric heater unit with the described protective circuit of claim 2; it is characterized in that: described heater members comprises PTC electric heating core body and is arranged on the protecting border of the periphery of this PTC electric heating core body; offer groove on this protecting border, the described temperature detect switch (TDS) that recovers is fitted on the bottom adjacent with this PTC electric heating core body of this groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201211630U CN201066935Y (en) | 2007-07-02 | 2007-07-02 | Protection circuit of electrical heating device and electric heating device with this protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201211630U CN201066935Y (en) | 2007-07-02 | 2007-07-02 | Protection circuit of electrical heating device and electric heating device with this protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201066935Y true CN201066935Y (en) | 2008-05-28 |
Family
ID=39484120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201211630U Expired - Lifetime CN201066935Y (en) | 2007-07-02 | 2007-07-02 | Protection circuit of electrical heating device and electric heating device with this protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201066935Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105050208A (en) * | 2015-07-23 | 2015-11-11 | 杨国威 | Safety heater having dual protection |
| CN105042856A (en) * | 2015-07-23 | 2015-11-11 | 杨国威 | Air heater with double protection functions |
-
2007
- 2007-07-02 CN CNU2007201211630U patent/CN201066935Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105050208A (en) * | 2015-07-23 | 2015-11-11 | 杨国威 | Safety heater having dual protection |
| CN105042856A (en) * | 2015-07-23 | 2015-11-11 | 杨国威 | Air heater with double protection functions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080528 |
|
| CX01 | Expiry of patent term |