CN207279793U - A kind of wind heater device with overtemperature protection - Google Patents
A kind of wind heater device with overtemperature protection Download PDFInfo
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- CN207279793U CN207279793U CN201721237066.8U CN201721237066U CN207279793U CN 207279793 U CN207279793 U CN 207279793U CN 201721237066 U CN201721237066 U CN 201721237066U CN 207279793 U CN207279793 U CN 207279793U
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Abstract
Super bath wind heater device technical field is the utility model is related to, super bath wind warms up in the prior art, its internal circuit board is at high power easily because temperature excessive two burns out circuit board；The utility model provides a kind of wind heater device with overtemperature protection; including ptc heater and set on circuit boards and be used for the controller for controlling ptc heater break-make; the controller includes; temperature sensing circuit; the high-temperature region being arranged on circuit board; for the temperature of detection circuit plate, a detection signal is exported when temperature exceedes preset value；Control circuit, is connected with temperature sensor signal and controls connection with ptc heater, receives and responds to the break-make of the detection signal control ptc heater；Block ptc heater automatically at high temperature, avoid circuit board from being burned, eliminate the security risk that circuit board overheat is brought.
Description
Technical field
Super bath wind heater device technical field is the utility model is related to, more specifically a kind of wind with overtemperature protection warms up dress
Put.
Background technology
At present, super bath industry is pushed up in bath, the wind that becomes more and more popular warms up, and wind heating equipment is heated and with wind turbine using PTC more
Produce warm wind, and these plant capacities with ptc heater are larger, its internal circuit board work at high power one section when
Between after local temperature constantly rise, circuit board may be burnt out, or even cause fire, though using the shell of fire proofing, according to
So there are security risk.
Utility model content
Technical problem to be solved in the utility model is to overcome above-mentioned defect existing in the prior art, there is provided a kind of band
The super bath wind heater device of overtemperature protection, occurs blocking ptc heater during high temperature, avoids circuit board from being burned, and eliminates circuit board mistake
The security risk that the torrid zone is come.
To achieve the above object, the utility model is achieved by the following technical programs：A kind of wind with overtemperature protection
Heater device, including ptc heater and set on circuit boards and for controlling the controller of ptc heater break-make, the control
Device includes, temperature sensing circuit, the high-temperature region being arranged on circuit board, for the temperature of detection circuit plate, exceedes in temperature pre-
If the detection of output one signal during value；Control circuit, is connected with temperature sensor signal and controls connection with ptc heater, receive
And in response to the break-make of the detection signal control ptc heater.
By using above-mentioned technical proposal, set temperature detection circuit on circuit boards, when PTC continues high-power operation one
After the section time, the temperature on circuit board raises and is detected after exceeding preset temperature by temperature sensing circuit and export detection letter
Number, control circuit receives detection signal and controls ptc heater to disconnect, and prevents temperature from continuing to raise, avoids circuit board from being burned
And eliminate the security risk that circuit board overheat is brought.
The further preferred scheme of the utility model is：The temperature sensing circuit includes a thermistor and a resistance, heat
Quick resistance one end ground connection, the other end are coupled to the first direct current through resistance, institute are produced between thermistor and the tie point of resistance
State detection signal.
The further preferred scheme of the utility model is：The controller further includes a warning circuit, with the control circuit
Control connection, for sending sound and light alarm signal；When control circuit receives and responds to the detection signal, control alarm electricity
Road sends alarm signal.Even if alarm signal energy reminds the working status of the current ptc heater of user.
The further preferred scheme of the utility model is：The controller further includes a zero cross detection circuit；Zero passage detection electricity
Road has a test side and an output terminal, its test side is coupled to alternating current, its output terminal is born and passed through by rotating forward in the voltage of alternating current
To control circuit output zero cross signal when crossing zero volt；The control circuit receives and responds to the detection signal and zero passage letter
Number, the disconnection of ptc heater is controlled after a detection signal and a zero cross signal is received successively.
Using the above scheme, can be in alternating current after control circuit is sequentially received a detection signal and a zero cross signal
Near zero-crossing point when disconnect relay, so as to draw electric arc when avoiding the actuating of relay；Relay is also avoided in the peak value of alternating current
When action caused by power grid impact, it is safe.
The utility model is more preferably：The control circuit includes, a microcontroller, its signal input part is examined with temperature
Slowdown monitoring circuit is connected with zero cross detection circuit, receives the detection and zero cross signal, its signal output part output control OFF signal；One opens
Powered-down road, its input terminal are coupled to the signal output part of microcontroller.
The utility model is more preferably：The on-off circuit includes first resistor R1, NPN triode Q1, relay
KM and diode D1；One end of wherein first resistor R1 is coupled to the signal output part of microcontroller, and the other end is coupled to tri- poles of NPN
The base stage of pipe Q1；The emitter ground connection of NPN triode Q1, base stage receive control OFF signal；Coil one end of relay KM is coupled to
First direct current, the other end are coupled to the collector of the NPN triode, its switch be serially connected with the ptc heater and power supply it
Between；Diode D1, its cathode are coupled to first direct current, and anode is coupled to the collector and the relay of NPN triode Q1
Between the coil of device KM.
The utility model is more preferably：The zero cross detection circuit includes diode D2, diode D3 and capacitance C1；
The diode D2 and diode D3 successively reversal connection between the second direct current and ground terminal；The capacitance C1 is parallel to diode
The both ends of D2；Tie point between diode D2 cathodes and diode D3 anode is electrically connected through three resistance with city successively, and should
Tie point exports the zero cross signal through another resistance.
In conclusion the utility model has the advantages that：First, ptc heater is blocked during high temperature automatically, avoids electricity
Road plate is burned, and eliminates the security risk that circuit board overheat is brought；2nd, avoid drawing electric arc and relay during the actuating of relay in city
Action impact caused by power grid, safe during the peak value of electricity.
Brief description of the drawings
Fig. 1 is the circuit diagram of the utility model；
Fig. 2 is the schematic diagram of temperature sensing circuit；
Fig. 3 is the schematic diagram of zero cross detection circuit；
Fig. 4 is the schematic diagram of warning circuit.
In figure：1st, controller；2nd, temperature sensing circuit；3rd, zero cross detection circuit；4th, control circuit；5th, warning circuit.
Embodiment
The utility model is described in further detail below in conjunction with attached drawing.
The present embodiment is only explanation to the utility model, it is not the limitation to the utility model, this area skill
Art personnel as needed can make the present embodiment the modification of no creative contribution after this specification is read, but as long as
All protected in the right of the utility model be subject to Patent Law.
As shown in Figures 1 to 4, show a kind of wind heater device with overtemperature protection, including ptc heater and be arranged on electricity
On the plate of road and for controlling the controller 1 of ptc heater break-make.Wind heater device further includes a wind turbine, and fan parallel-connection is heated in PTC
Device both ends.
Controller 1 mainly includes temperature sensing circuit 2 and control circuit 4.Temperature sensing circuit 2, is arranged on circuit board
High-temperature region, for the temperature of detection circuit plate, a detection signal is exported when temperature exceedes preset value；Control circuit 4, with temperature
Spend sensor signal connection and controlled with ptc heater and connected, receive and respond to the logical of detection signal control ptc heater
It is disconnected.
Temperature sensing circuit 2 includes a thermistor and a resistance, thermistor one end ground connection, and the other end is coupled through resistance
Detection signal is produced in the first direct current, between thermistor and the tie point of resistance.
In the present embodiment, thermistor uses the thermistor RA of NTC types.Thermistor RA and resistance R6 series connection with+
Between the direct current and ground terminal of 5V.Tie point between thermistor RA and resistance R6 is defeated after resistance R7 and resistance R8 successively
Go out to detect signal, be grounded in the tie point of resistance R7 and resistance R8 through a capacitance C2.
Further, in order to the arcing conditions that relay occurs in break-make ptc heater, controller 1 is reduced or avoided
Further include a zero cross detection circuit 3；Zero detection circuit has a test side and an output terminal, its test side is coupled to alternating current, its
Output terminal is negative from rotating forward in the voltage of alternating current and exports zero cross signal to control circuit 4 when passing through zero volt；Control circuit 4 receives simultaneously
In response to detection signal and zero cross signal, the disconnected of ptc heater is controlled after a detection signal and a zero cross signal is received successively
Open.
In the present embodiment, zero cross detection circuit 3 includes diode D2, diode D3 and capacitance C1；Diode D2 and two
Pole pipe D3 successively reversal connection between the second direct current and ground terminal；Capacitance C1 is parallel to the both ends of diode D2；Diode D2 is just
Tie point between pole and diode D3 anode is electrically connected through three resistance with city successively, and the tie point is exported through another resistance
Zero cross signal.
Control circuit 4 includes microcontroller and an on-off circuit.Microcontroller, its signal input part and temperature sensing circuit 2 and
Zero cross detection circuit 3 connects, and receives detection and zero cross signal, its signal output part output control OFF signal；On-off circuit, it is inputted
End is coupled to the signal output part of microcontroller.
On-off circuit includes first resistor R1, NPN triode Q1, relay KM and diode D1；Wherein first resistor R1
One end be coupled to the signal output part of microcontroller, the other end is coupled to the base stage of NPN triode Q1；The hair of NPN triode Q1
Emitter grounding, base stage receive control OFF signal；
Coil one end of relay KM is coupled to the first direct current, and the other end is coupled to the collector of the NPN triode, its
Switch is serially connected between ptc heater and power supply；
Diode D1, its cathode are coupled to the first direct current, and anode is coupled to the collector and the relay of NPN triode Q1
Between the coil of device KM.
Further, in order to remind user, the circuit board of super bath is because temperature is excessive and automatic beyond preset temperature
Ptc heater is disconnected, controller 1 further includes a warning circuit 5, controls and connects with control circuit 4, for sending sound-light alarm letter
Number；When control circuit 4 receives and responds to detection signal, control warning circuit 5 sends alarm signal.
In the present embodiment, warning circuit 5 includes a light emitting diode, a buzzer and a PNP triode.Tri- poles of PNP
The base stage of pipe Q2 is connected through another signal output part of a resistance R9 and microcontroller, its grounded collector, its emitter is through buzzing
Device is coupled to a DC voltage.Both ends in parallel with buzzer after one resistance R10 of light emitting diode series connection.Light emitting diode is born
Pole is connected with the tie point of buzzer and PNP triode emitter.
Claims (7)
1. a kind of wind heater device with overtemperature protection, including ptc heater and setting are on circuit boards and for controlling PTC to heat
The controller of device break-make（1）, it is characterised in that：The controller（1）Including,
Temperature sensing circuit（2）, the high-temperature region that is arranged on circuit board, for the temperature of detection circuit plate, exceedes pre- in temperature
If the detection of output one signal during value；
Control circuit（4）, it is connected with temperature sensor signal and controls connection with ptc heater, receives and responds to the inspection
Survey the break-make of signal control ptc heater.
2. wind heater device according to claim 1, it is characterised in that：The temperature sensing circuit（2）Including temperature-sensitive electricity
Resistance and a resistance, thermistor one end ground connection, the other end are coupled to the first direct current, the connection of thermistor and resistance through resistance
The detection signal is produced between point.
3. wind heater device according to claim 1, it is characterised in that：The controller（1）Further include a warning circuit
（5）, with the control circuit（4）Control connection, for sending sound and light alarm signal；Work as control circuit（4）Receive and respond to
During the detection signal, warning circuit is controlled（5）Send alarm signal.
4. wind heater device according to claim 1, it is characterised in that：The controller（1）Further include zero passage detection electricity
Road（3）；Zero cross detection circuit（3）With a test side and an output terminal, its test side is coupled to alternating current, its output terminal is in alternating current
Voltage from rotate forward it is negative and by during zero volt to control circuit（4）Export zero cross signal；The control circuit（4）Receive and respond
In the detection signal and zero cross signal, the disconnected of ptc heater is controlled after a detection signal and a zero cross signal is received successively
Open.
5. wind heater device according to claim 4, it is characterised in that：The control circuit（4）Including,
One microcontroller, its signal input part and temperature sensing circuit（2）And zero cross detection circuit（3）Connection, receives the detection
And zero cross signal, its signal output part output control OFF signal；
One on-off circuit, its input terminal are coupled to the signal output part of microcontroller.
6. wind heater device according to claim 5, it is characterised in that：The on-off circuit includes first resistor R1, NPN tri-
Pole pipe Q1, relay KM and diode D1；
One end of wherein first resistor R1 is coupled to the signal output part of microcontroller, and the other end is coupled to the base of NPN triode Q1
Pole；The emitter ground connection of NPN triode Q1, base stage receive the control OFF signal；
Coil one end of relay KM is coupled to the first direct current, and the other end is coupled to the collector of the NPN triode, it is switched
It is serially connected between the ptc heater and power supply；
Diode D1, its cathode are coupled to first direct current, and anode is coupled to the collector and the relay of NPN triode Q1
Between the coil of device KM.
7. wind heater device according to claim 4, it is characterised in that：The zero cross detection circuit（3）Including diode D2,
Diode D3 and capacitance C1；
The diode D2 and diode D3 successively reversal connection between the second direct current and ground terminal；The capacitance C1 is parallel to two
The both ends of pole pipe D2；Tie point between diode D2 cathodes and diode D3 anode is electrically connected through three resistance with city successively,
And the tie point exports the zero cross signal through another resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721237066.8U CN207279793U (en) | 2017-09-25 | 2017-09-25 | A kind of wind heater device with overtemperature protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721237066.8U CN207279793U (en) | 2017-09-25 | 2017-09-25 | A kind of wind heater device with overtemperature protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207279793U true CN207279793U (en) | 2018-04-27 |
Family
ID=61981920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721237066.8U Active CN207279793U (en) | 2017-09-25 | 2017-09-25 | A kind of wind heater device with overtemperature protection |
Country Status (1)
| Country | Link |
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| CN (1) | CN207279793U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406989A (en) * | 2018-11-12 | 2019-03-01 | 深圳和而泰小家电智能科技有限公司 | A kind of load circuit detection method, load detecting circuit and electronic equipment |
| CN109612097A (en) * | 2019-01-29 | 2019-04-12 | 广东绿岛风空气***股份有限公司 | A kind of super bath with safeguard protection |
| CN111103909A (en) * | 2019-12-24 | 2020-05-05 | 追觅科技(上海)有限公司 | Electric hair drier circuit board temperature control circuit and method |
-
2017
- 2017-09-25 CN CN201721237066.8U patent/CN207279793U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406989A (en) * | 2018-11-12 | 2019-03-01 | 深圳和而泰小家电智能科技有限公司 | A kind of load circuit detection method, load detecting circuit and electronic equipment |
| CN109406989B (en) * | 2018-11-12 | 2024-04-16 | 深圳和而泰小家电智能科技有限公司 | Load loop detection method, load detection circuit and electronic equipment |
| CN109612097A (en) * | 2019-01-29 | 2019-04-12 | 广东绿岛风空气***股份有限公司 | A kind of super bath with safeguard protection |
| CN109612097B (en) * | 2019-01-29 | 2024-05-14 | 广东绿岛风空气***股份有限公司 | Bathroom heater with safety protection |
| CN111103909A (en) * | 2019-12-24 | 2020-05-05 | 追觅科技(上海)有限公司 | Electric hair drier circuit board temperature control circuit and method |
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