CN201238282Y - Motor control detection circuit for forced-ventilation type gas water heater - Google Patents
Motor control detection circuit for forced-ventilation type gas water heater Download PDFInfo
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- CN201238282Y CN201238282Y CNU2008200420347U CN200820042034U CN201238282Y CN 201238282 Y CN201238282 Y CN 201238282Y CN U2008200420347 U CNU2008200420347 U CN U2008200420347U CN 200820042034 U CN200820042034 U CN 200820042034U CN 201238282 Y CN201238282 Y CN 201238282Y
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Abstract
The utility model discloses a compulsion-discharging fuel-gas heater motor control detection circuit; one end of a 220 alternative-current power is connected with an AC motor; a controllable silicon controller is connected with both ends, which are serially connected with each other, of a capacitor C21 and a resistor R4; the controllable silicon controller is serially connected with the AC motor and the motor detection circuit, and a resistor R3 is connected with the output end of a motor PWM signal output circuit and the motor detection circuit; both ends of a diode set are connected with the motor control circuit and the other end of the 220V alternative-current power, and a photo coupler LA and a resistor R1, which are serially connected with each other, are connected with both ends of the diode set in parallel, and the output signal end of the photo coupler LA is connected with the basic pole end of a triode DQ5, and the collector end of the triode DQ5 is connected with a plus 5 power source, and the transmitting pole end of the triode is grounded, and the collector end of the triode DQ5 is used as the detection end of the motor. The controllable silicon controller is used to control the running of the motor and is cooperated with the motor detection circuit to complete the malfunction judgment of the motor; whether the motor has malfunction or not is judged through the variation of the high and the low electric levels of the motor detection end; the detection circuit has simple operation and is reliable to run.
Description
Technical field
The utility model relates to a kind of gas heater motor control and detection circuit, especially a kind of motor control and detection circuit of forced-exhaust gas water heater.
Background technology
Forced-ventilated (dividing large and small fire, two sections fire rows), gas heater generally adopted the motor (switch two groups of different windings and realize two kinds of wind speed conversion) that exchanges two speed aspect the motor control, when segmentation switching or large and small fire switching, motor comes the conversion wind speed owing to switching by relay, so only need judge the conversion of motor testing circuit high-low level is whether the decidable motor exists open fault.
The utility model content:
The utility model provides a kind of motor control and detection circuit of forced-exhaust gas water heater, and utilization controllable silicon controller control motor operation cooperates the motor testing circuit to realize the detection of motor under running status and holding state.
The technical scheme that the utility model adopted is:
A kind of motor control and detection circuit of forced-exhaust gas water heater, comprise a motor control circuit and a motor testing circuit, described motor control circuit has a motor pulse width modulation (Pulse Width Modulation, be called for short PWM) signal output apparatus, described motor control circuit also comprises an AC motor, one controllable silicon controller TR1, one resistance R 3, capacitor C 21 and resistance R 4, described capacitor C 21 and resistance R 4 serial connections, and circuit two ends and described controllable silicon controller TR1 two links after capacitor C 21 and resistance R 4 serial connections also connect, AC motor input is electrically connected with 220V AC power one end, controllable silicon controller TR1 two links are connected in series with AC motor output end and described motor testing circuit input respectively, this controllable silicon controller TR1 Enable Pin is electrically connected with described motor pwm signal output circuit output, and described resistance R 3 two ends are connected in series with motor PWM output circuit output and motor testing circuit input respectively; Described motor testing circuit comprises a diode group, one optical coupler LA, one triode DQ5 and resistance R 1, described diode group input is connected in series with described motor control circuit output, this diode group output is electrically connected with the 220V AC power other end, described resistance R 1 one ends are connected in series with optical coupler LA one input, resistance R 1 other end and another input of optical coupler LA are respectively with described diode group 21 two ends and connect, the output of described optical coupler LA is electrically connected with described triode DQ5 base terminal, this triode DQ5 emitter terminal ground connection and collector terminal are electrically connected with+5V power supply, the collector terminal of described triode DQ5 externally transmits the motor test side of signal as this testing circuit, described diode group comprises the reverse diode D3 that is connected that forward connects diode D2 and a plurality of serial connections, and this forward connects diode D2 and these a plurality of serial connections oppositely is connected between diode D3 and connects.
The diode group of described motor testing circuit comprises the reverse diode D3 that is connected that forward connects diode D2 and three serial connections, and this forward connects diode D2 and these three serial connections oppositely is connected between diode D3 and connects.
Be connected in series the electrochemical capacitor E4 of a filtering AC noise between the motor test side of described motor testing circuit and ground.
The beneficial effects of the utility model are: the utility model gets operation principle and is: under the open state, motor PWM output circuit is exported the pwm signal of a sequential alternate, controllable silicon controller TR1 Enable Pin receives conducting controllable silicon controller behind this pwm signal: 1) if the AC motor operations is normal, then ac signal is via the AC motor, with the motor testing circuit, because the pressure drop of diode group makes optical coupler LA conducting, thereby makes motor test side output low level; 2) as if AC motor open fault, then the motor control circuit open circuit ends thereby optical coupler LA ends triode DQ5, and the motor test side is series at+the 5V power supply, therefore exports high level.Thereby as seen: under open state, the motor test side detects low level, shows AC motor operations normal (being that fan operation is normal), can normally open the valve point fire; The motor test side detects high level, then shows the motor open fault, and machine is quoted failure code, stops out the action of valve point fire, if detect high level when operation, control system is cut off source of the gas at once with the electromagnetic valve body closure, guarantees safety; Under the holding state, TR1 ends thereby motor PWM output circuit output does not have pwm signal output controllable silicon controller, AC signal is through the AC motor, capacitor C 21 and resistance R 4 by serial connection enter the motor testing circuit, the optical coupler LA conducting that sequential replaces along with discharging and recharging of capacitor C 21, end, thereby make conducting that triode DQ5 sequential replaces, end, output low level during triode DQ5 conducting, export the 5V high level when ending, thereby produce the square-wave signal (ac power frequency is 50HZ) of a peak value 5V frequency 50HZ; If AC motor open circuit fault, then as: export a high level one, 2).Thereby as seen: under holding state, the motor test side detects the square-wave signal of a peak value 5V frequency 50HZ, shows that motor is normal, can start at any time; The motor test side detects then motor open fault of high level, and machine will not enter normal start-up routine.
Therefore this example is finished the control and the fault verification of motor by motor control circuit and combining of motor testing circuit, and during detection, the high-low level by the motor test side changes whether judge motor failure, and is simple to operate, reliable.
Description of drawings
Fig. 1 is a circuit diagram of the present utility model;
Embodiment
Embodiment: a kind of motor control and detection circuit of forced-exhaust gas water heater, comprise a motor control circuit 1 and a motor testing circuit 2, described motor control circuit 1 has a motor pwm signal output circuit, described motor control circuit 1 also comprises an AC motor 11, one controllable silicon controller TR1, one resistance R 3, capacitor C 21 and resistance R 4, capacitor C 21 and resistance R 4 serial connections, and circuit two ends and described controllable silicon controller TR1 two links after capacitor C 21 and resistance R 4 serial connections also connect, AC motor 11 inputs are electrically connected with 220V AC power one end, controllable silicon controller TR1 two links are connected in series with AC motor 11 outputs and described motor testing circuit 2 inputs respectively, this controllable silicon controller TR1 Enable Pin is electrically connected with described motor pwm signal output circuit output, and described resistance R 3 two ends are connected in series with motor PWM output circuit output and motor testing circuit 2 inputs respectively; Described motor testing circuit 2 comprises a diode group 21, one optical coupler LA, one triode DQ5 and resistance R 1, described diode group 21 inputs are connected in series with described motor control circuit 1 output, these diode group 21 outputs are electrically connected with the 220V AC power other end, described resistance R 1 one ends are connected in series with optical coupler LA one input, resistance R 1 other end and another input of optical coupler LA are respectively with described diode group 21 two ends and connect, the output of described optical coupler LA is electrically connected with described triode DQ5 base terminal, this triode DQ5 emitter terminal ground connection and collector terminal are electrically connected with+5V power supply, the collector terminal of described triode DQ5 externally transmits the motor test side of signal as this testing circuit, described diode group 21 comprises the reverse diode D3 that is connected that forward connects diode D2 and a plurality of serial connections, and this forward connects diode D2 and these a plurality of serial connections oppositely is connected between diode D3 and connects.
The diode group 21 of described motor testing circuit 2 comprises the reverse diode D3 that is connected that forward connects diode D2 and three serial connections, and this forward connects diode D2 and these three serial connections oppositely is connected between diode D3 and connects.
Be connected in series the electrochemical capacitor E4 of a filtering AC noise between the motor test side of described motor testing circuit 2 and ground.
Operation principle of the present utility model is:
One, under open state, motor PWM output circuit is exported the pwm signal of a sequential alternate, controllable silicon controller TR1 Enable Pin receives conducting controllable silicon controller behind this pwm signal: 1) if AC motor 11 is working properly, then ac signal is via AC motor 11, with motor testing circuit 2, because the diode group is connected diode D2 and connects with a forward by the reverse connection diode D3 of a plurality of serial connections and forms, pressure drop by diode D3 makes the optical coupler LA two ends that are connected in these diode group two ends by series resistor R1 have voltage to produce, the luminous conducting photistor of the LED P C2 Q2 of optical coupler LA, thereby the optical coupler output output+5V signal of telecommunication makes triode Q5 collector terminal and emitter terminal conducting, because emitter terminal ground connection, thereby make motor test side output low level; 2) as if AC motor 11 open faults, then motor control circuit 1 open circuit ends thereby optical coupler LA ends triode DQ5, and the motor test side is series at+the 5V power supply, therefore exports high level.Thereby as seen: under open state, the motor test side detects low level, shows AC motor 11 (being that fan operation is normal) working properly, can normally open the valve point fire; The motor test side detects high level, then shows the motor open fault, and machine is quoted failure code, stops out the action of valve point fire, if detect high level when operation, control system is cut off source of the gas at once with the electromagnetic valve body closure, guarantees safety.
Two, under holding state, TR1 ends thereby motor PWM output circuit output does not have pwm signal output controllable silicon controller, AC signal is through AC motor 11, capacitor C 21 and resistance R 4 by serial connection enter motor testing circuit 2, optical coupler LA is by the resistance R 1 serial connection motor control circuit 1 and the 220V AC power other end, the optical coupler LA conducting that sequential replaces along with discharging and recharging of capacitor C 21, end, thereby the conducting that triode DQ5 sequential is replaced, end, output low level during triode DQ5 conducting, export the 5V high level when ending, thereby produce the square-wave signal (ac power frequency is 50HZ) of a peak value 5V frequency 50HZ; If AC motor 11 open circuit faults, then as: export a high level one, 2).Thereby as seen: under holding state, the motor test side detects the square-wave signal of a peak value 5V frequency 50HZ, shows that motor is normal, can start at any time; The motor test side detects then motor open fault of high level, and machine will not enter normal start-up routine.
Therefore this example is finished the control and the fault verification of motor by motor control circuit and combining of motor testing circuit, and during detection, the high-low level by the motor test side changes whether judge motor failure, and is simple to operate, reliable.
Claims (3)
1. motor control and detection circuit of forced-exhaust gas water heater, comprise a motor control circuit (1) and a motor testing circuit (2), described motor control circuit (1) has a motor pwm signal output circuit, it is characterized in that: described motor control circuit (1) also comprises an AC motor (11), one controllable silicon controller (TR1), one resistance (R3), electric capacity (C21) and resistance (R4), described electric capacity (C21) and resistance (R4) serial connection, and circuit two ends and described controllable silicon controller (TR1) two links after electric capacity (C21) and resistance (R4) serial connection also connect, AC motor (11) input is electrically connected with 220V AC power one end, controllable silicon controller (TR1) two links are connected in series with AC motor (11) output and described motor testing circuit (2) input respectively, this controllable silicon controller (TR1) Enable Pin is electrically connected with described motor pwm signal output circuit output, and described resistance (R3) two ends are connected in series with motor PWM output circuit output and motor testing circuit (2) input respectively; Described motor testing circuit (2) comprises a diode group (21), one optical coupler (LA), one triode (DQ5) and resistance (R1), described diode group (21) input is connected in series with described motor control circuit (1) output, this diode group (21) output is electrically connected with the 220V AC power other end, described resistance (R1) end is connected in series with optical coupler (LA) input, resistance (R1) other end and another input of optical coupler (LA) are respectively with described diode group (21) two ends and connect, the output of described optical coupler (LA) is electrically connected with described triode (DQ5) base terminal, this triode (DQ5) emitter terminal ground connection and collector terminal are electrically connected with+5V power supply, the collector terminal of described triode (DQ5) externally transmits the motor test side of signal as this testing circuit, described diode group (21) comprises the reverse diode (D3) that is connected that forward connects diode (D2) and a plurality of serial connections, and this forward connection diode (D2) and these a plurality of serial connections reverse is connected between diode (D3) and connects.
2. motor control and detection circuit of forced-exhaust gas water heater according to claim 1, it is characterized in that: the diode group (21) of described motor testing circuit (2) comprises the reverse diode (D3) that is connected that forward connects diode (D2) and three serial connections, and this forward connection diode (D2) and these three serial connections reverse is connected between diode (D3) and connects.
3. motor control and detection circuit of forced-exhaust gas water heater according to claim 1 is characterized in that: the electrochemical capacitor (E4) that is connected in series a filtering AC noise between the motor test side of described motor testing circuit (2) and ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200420347U CN201238282Y (en) | 2008-07-23 | 2008-07-23 | Motor control detection circuit for forced-ventilation type gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200420347U CN201238282Y (en) | 2008-07-23 | 2008-07-23 | Motor control detection circuit for forced-ventilation type gas water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201238282Y true CN201238282Y (en) | 2009-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200420347U Expired - Fee Related CN201238282Y (en) | 2008-07-23 | 2008-07-23 | Motor control detection circuit for forced-ventilation type gas water heater |
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| Country | Link |
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| CN (1) | CN201238282Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101762780A (en) * | 2008-11-10 | 2010-06-30 | 樱花卫厨（中国）股份有限公司 | Motor control and detection circuit of forced-exhaust gas water heater |
| CN109188268A (en) * | 2018-07-13 | 2019-01-11 | 广东瑞德智能科技股份有限公司 | A kind of modified low cost motor open circuit detecting device |
-
2008
- 2008-07-23 CN CNU2008200420347U patent/CN201238282Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101762780A (en) * | 2008-11-10 | 2010-06-30 | 樱花卫厨（中国）股份有限公司 | Motor control and detection circuit of forced-exhaust gas water heater |
| CN101762780B (en) * | 2008-11-10 | 2013-05-22 | 樱花卫厨（中国）股份有限公司 | Motor control and detection circuit of forced-exhaust gas water heater |
| CN109188268A (en) * | 2018-07-13 | 2019-01-11 | 广东瑞德智能科技股份有限公司 | A kind of modified low cost motor open circuit detecting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090513 Termination date: 20130723 |