CN202813802U - Intelligent air pressure system for fuel gas water heater - Google Patents

Intelligent air pressure system for fuel gas water heater Download PDF

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Publication number
CN202813802U
CN202813802U CN 201220511622 CN201220511622U CN202813802U CN 202813802 U CN202813802 U CN 202813802U CN 201220511622 CN201220511622 CN 201220511622 CN 201220511622 U CN201220511622 U CN 201220511622U CN 202813802 U CN202813802 U CN 202813802U
Authority
CN
China
Prior art keywords
motor
circuit
control chip
air pressure
intelligent air
Prior art date
Application number
CN 201220511622
Other languages
Chinese (zh)
Inventor
张永杰
Original Assignee
樱花卫厨(中国)股份有限公司
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Filing date
Publication date
Application filed by 樱花卫厨(中国)股份有限公司 filed Critical 樱花卫厨(中国)股份有限公司
Priority to CN 201220511622 priority Critical patent/CN202813802U/en
Application granted granted Critical
Publication of CN202813802U publication Critical patent/CN202813802U/en

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Abstract

The utility model discloses an intelligent air pressure system for a fuel gas water heater. The intelligent air pressure system for the fuel gas water heater is mainly composed of a control chip, a motor, a motor control circuit, a combustion control circuit and a fan revolving speed feedback circuit. Pulse wavelength modulation (PWM) can be transmitted to the motor control circuit by the control chip. The motor control circuit can drive and stop the motor to move. Rotating speed of the motor can be detected by the fan revolving speed feedback circuit. Round per minute signals (RPW) can be transmitted to the control chip by the fan revolving speed feedback circuit. The control chip can transmit signals to the combustion control circuit. The combustion control circuit can control wind-resistance movements and flame-out protection movements of the fuel gas water heater. According to the intelligent air pressure system for the fuel gas water heater, intelligentized wind-resistance disposal, namely conducting wind load resistance and flame-out protection can be achieved under the condition that a mechanical wind pressure switch is not used and arranged. The intelligent air pressure system for the fuel gas water heater has the advantages that accuracy of wind pressure-resisting is high, production cost is reduced, and advantages of comfort and safety and the like in using the fuel gas water heater can be achieved.

Description

The intelligent air pressure system of gas heater

Technical field

The utility model relates to a kind of forced-exhaust gas water heater, specifically relates to the intelligent air pressure system of a kind of gas heater.

Background technology

At present; gas heater kind on the market is a lot; for forced-exhaust gas water heater; when being installed in the larger coastal city of high building or wind-force; because environment for use more complicated; in the process of using combustion gas; usually can occur causing water heater itself to move because extraneous wind-force is large or the waste gas problem such as exceed standard; in order to reach the effect of Wind-Pressure Resistance and blast protection; gas heater is usually at the inner mechanical type blast switch of installing of water heater; the wind resistance of system is processed the action of dependence mechanical type blast switch and the wind resistance judgement is carried out in the signal output of blast switch testing circuit; when reaching, extraneous blast is enough to allow blast switch when action; by the action of blast switch testing circuit detecting blast switch; and the transmission actuating signal is to control chip; after control chip receives actuating signal; send instruction to combustion controlling circuit and carry out blowout protection; show the dependent failure code; but this system need to be by the mechanical type blast switch; the blast switch precision is depended in wind resistance parameter and the sensitivity of system fully; therefore; the intelligent degree that the Wind-Pressure Resistance of system and blast protection etc. are processed is not high enough, and it is growing comfortable to the gas heater use to satisfy people; Wind-Pressure Resistance accuracy and use safety requirements.

Summary of the invention

In order to solve the problems of the technologies described above; the utility model proposes the intelligent air pressure system of a kind of gas heater; can not use the intelligent wind resistance of realizing gas heater in the situation that the mechanical type blast switch is installed to process; namely carry out Wind-Pressure Resistance and blowout protection; it is high to have the Wind-Pressure Resistance accuracy; reduce production costs, make the multiple advantages such as the use of gas heater is comfortable and safe.

The technical solution of the utility model is achieved in that

The intelligent air pressure system of a kind of gas heater; mainly by control chip; motor; motor control circuit; combustion controlling circuit; the rotation speed of fan feedback circuit forms; the output of described control chip is connected with the input of described motor control circuit and the input of described combustion controlling circuit respectively; the input of described control chip is connected with described rotation speed of fan feedback circuit; the output of described motor control circuit is electrically connected with described motor; and described motor is electrically connected with described rotation speed of fan feedback circuit; described control chip can transmit pwm signal to described motor control circuit; described motor control circuit can drive and stop described motor operation; described rotation speed of fan feedback circuit can be detected the rotating speed of described motor; and transmission RPM signal is given described control chip; described control chip can be given described combustion controlling circuit by signal transmission, and described combustion controlling circuit can be controlled described gas heater wind resistance action and blowout protection action.

As further improvement of the utility model, be provided with the motor current testing circuit, the output of the input of described control chip and described motor current testing circuit joins, described motor current testing circuit is electrically connected with described motor, described motor current testing circuit can be detected the electric current of described motor, and the transmission current signal is given described control chip.

As further improvement of the utility model, be provided with voltage detection circuit, the output of described voltage detection circuit and the input of described control chip join, described voltage detection circuit can be detected the supply voltage of described gas heater, and the transmission voltage signal is given described control chip.

As further improvement of the utility model, described combustion controlling circuit can be controlled the action of described gas heater wind resistance and comprise: described combustion controlling circuit control motor control circuit improves rotation speed of fan and carries out wind resistance action and described combustion controlling circuit control gas heater and reduce the burning number and carry out wind resistance and move.

As further improvement of the utility model, be provided with display unit, described display unit is electrically connected with described control chip, and described display unit can show the working signal from described control chip.

The beneficial effects of the utility model are: the utility model provides a kind of gas heater intelligent air pressure system; be applied to the Function Extension of gas heater; in the gas water heater working process; with the current blast state of effect ground real-time judgment; draught fan control circuit by gas heater; combustion controlling circuit; realize that water heater is in the safe handling that has under the wind state; compare with traditional blast protection; replaced the effect of traditional mechanical type blast switch; the concrete mode of judging minute pressure condition as: the PWM by control chip outputs to the motor control circuit CD-ROM drive motor and moves; the speed feedback of motor feeds back to control chip through the rotation speed of fan feedback circuit; under standard state; there are certain corresponding relation in PWM and RPM; according to certain feedback RPM signal; control chip PWM exporting change confirms whether the external world is in the wind state is arranged; perhaps according to certain control chip PWM output; the RPM signal intensity of motor feedback determines whether the external world is in the wind state is arranged; and then judge whether water heater needs to enter intelligent wind resistance and process; namely carry out Wind-Pressure Resistance action and blowout protection action; can make the wind-force of water heater tolerance certain limit; do not affect user's normal use; carry out the wind resistance protection when reaching the wind resistance limiting value; show failure code; the security that reminding user uses; make the use of water heater more comfortable, safety.Be provided with the motor current testing circuit, electric current by motor current testing circuit detecting motor, and feed back to control chip, control chip just can carry out wind resistance and judge, the control chip instruction enters intelligent wind resistance processing when the current value of feedback surpasses limit value, blower fan and firepower are carried out certain adjustment, simultaneously, judge in conjunction with the supply voltage detected value, get rid of the judgement that the variation of supply voltage causes and disturb, can determine whether more accurately to be in the excessive state of extraneous blast, thereby automatically adjust rotation speed of fan and gas quantity, reach the optimal proportion of air and combustion gas, better improve water heater at the runnability that has under the wind state.

Description of drawings

Fig. 1 is the utility model theory diagram;

Fig. 2 is another theory diagram of the utility model (being provided with the motor current testing circuit);

Fig. 3 is the another theory diagram of the utility model (being provided with voltage detection circuit).

The specific embodiment

Such as Fig. 1; Fig. 2 and shown in Figure 3; the intelligent air pressure system of a kind of gas heater; mainly by control chip; motor; motor control circuit; combustion controlling circuit; the rotation speed of fan feedback circuit forms; the output of described control chip is connected with the input of described motor control circuit and the input of described combustion controlling circuit respectively; the input of described control chip is connected with described rotation speed of fan feedback circuit; the output of described motor control circuit is electrically connected with described motor; and described motor is electrically connected with described rotation speed of fan feedback circuit; described control chip can transmit pwm signal to described motor control circuit; described motor control circuit can drive and stop described motor operation; described rotation speed of fan feedback circuit can be detected the rotating speed of described motor; and transmission RPM signal is given described control chip; described control chip can be given described combustion controlling circuit by signal transmission, and described combustion controlling circuit can be controlled described gas heater wind resistance action and blowout protection action.

Preferably, be provided with the motor current testing circuit, the output of the input of described control chip and described motor current testing circuit joins, described motor current testing circuit is electrically connected with described motor, described motor current testing circuit can be detected the electric current of described motor, and the transmission current signal is given described control chip, like this, electric current by motor current testing circuit detecting motor, and feed back to control chip, control chip just can carry out wind resistance and judge, the control chip instruction enters intelligent wind resistance processing when the current value of feedback surpasses limit value, blower fan and firepower are carried out certain adjustment, but because result's impact that the precision of current detection circuit is judged wind resistance is larger, and in the AC blower fan system, the cost of realization current sense and precision difficulty and cost are higher, therefore, use motor current testing circuit detecting motor current to be preferred for the dc fan system to make the windproof mode.

Preferably, be provided with voltage detection circuit, the output of described voltage detection circuit and the input of described control chip join, described voltage detection circuit can be detected the supply voltage of described gas heater, and the transmission voltage signal gives described control chip, like this, and when judging whether the external world has blast, judge in conjunction with the supply voltage detected value simultaneously, can get rid of the judgement that causes because of the variation of supply voltage and disturb.

Preferably, described combustion controlling circuit can be controlled the action of described gas heater wind resistance and comprises: described combustion controlling circuit control motor control circuit improves rotation speed of fan and carries out wind resistance action and described combustion controlling circuit control gas heater and reduce the burning number and carry out wind resistance and move.

Preferably, be provided with display unit, described display unit is electrically connected with described control chip, and described display unit can show the working signal from described control chip.Like this, described display unit can show normal operation, be in the duties such as wind resistance work and blowout protection, and when gas heater is in blowout protection, shows failure code, with call user's attention safety.

The utility model gas heater is as follows with intelligent air pressure system operation principle:

The control chip output pwm signal is to motor control circuit, and by the operation of motor control circuit CD-ROM drive motor, process rotation speed of fan feedback circuit arrives control chip with the rotating speed of blower fan by the RPM signal feedback again.Under standard state, the RPM signal that certain pwm signal is corresponding certain, having under the wind state, the RPM signal output that keeps same rotating speed, the pwm signal of control chip output can reduce, system just can determine whether that by the exporting change of pwm signal need to enter intelligent wind resistance processes, equally, the pwm signal of retentive control chip output is constant, the speed feedback signal RPM of motor can rise, and system just can determine whether that by the variation of the speed feedback signal RPM of motor need to enter intelligent wind resistance processes, after environment recovers normal condition, water heater can reopen, and reuses.Especially, can be by the electric current of motor current testing circuit detecting motor, and feed back to control chip, carrying out wind resistance by control chip again judges, the control chip instruction enters intelligent wind resistance processing when the current value of feedback surpasses limit value, blower fan and firepower are carried out certain adjustment, but because result's impact that the precision of current detection circuit is judged wind resistance is larger, and in the AC blower fan system, the cost of realization current sense and precision difficulty and cost are higher, therefore, use motor current testing circuit detecting motor current to be preferred for the dc fan system to make the windproof mode.Especially, in order to get rid of mains voltage variations to the impact of RPM signal, can increase the variation that voltage detection circuit detects supply voltage in real time, get rid of the judgement that causes because of the variation of supply voltage and disturb, further improve the accuracy that wind resistance is judged.

The intelligent wind resistance of system is processed and can be divided into three phases, phase I can be controlled motor control circuit raising rotation speed of fan by combustion controlling circuit and carry out the wind resistance action, after blast surpasses certain limit, system will carry out gas quantity control by combustion controlling circuit, carry out the wind resistance action of second stage by reducing certain number; After entering limit control, system will carry out the blowout protection action, as the wind resistance action of phase III, and show failure code, call user's attention safety.

Above embodiment is with reference to accompanying drawing; preferred embodiment of the present utility model is elaborated; those skilled in the art is by carrying out modification or the change on the various forms to above-described embodiment; but do not deviate from the situation of essence of the present utility model, all drop within the protection domain of the present utility model.

Claims (5)

1. intelligent air pressure system of gas heater; it is characterized in that: mainly by control chip; motor; motor control circuit; combustion controlling circuit; the rotation speed of fan feedback circuit forms; the output of described control chip is connected with the input of described motor control circuit and the input of described combustion controlling circuit respectively; the input of described control chip is connected with described rotation speed of fan feedback circuit; the output of described motor control circuit is electrically connected with described motor; and described motor is electrically connected with described rotation speed of fan feedback circuit; described control chip can transmit pwm signal to described motor control circuit; described motor control circuit can drive and stop described motor operation; described rotation speed of fan feedback circuit can be detected the rotating speed of described motor; and transmission RPM signal is given described control chip; described control chip can be given described combustion controlling circuit by signal transmission, and described combustion controlling circuit can be controlled described gas heater wind resistance action and blowout protection action.
2. the intelligent air pressure system of gas heater according to claim 1, it is characterized in that: be provided with the motor current testing circuit, the output of the input of described control chip and described motor current testing circuit joins, described motor current testing circuit is electrically connected with described motor, described motor current testing circuit can be detected the electric current of described motor, and the transmission current signal is given described control chip.
3. the intelligent air pressure system of gas heater according to claim 1, it is characterized in that: be provided with voltage detection circuit, the output of described voltage detection circuit and the input of described control chip join, described voltage detection circuit can be detected the supply voltage of described gas heater, and the transmission voltage signal is given described control chip.
4. the intelligent air pressure system of gas heater according to claim 1 is characterized in that: described combustion controlling circuit can be controlled described gas heater wind resistance action and comprise: described combustion controlling circuit control motor control circuit improves rotation speed of fan and carries out wind resistance action and described combustion controlling circuit control gas heater and reduce the burning number and carry out wind resistance and move.
5. according to claim 1 to the intelligent air pressure system of 4 each described gas heaters, it is characterized in that: be provided with display unit, described display unit is electrically connected with described control chip, and described display unit can show the working signal from described control chip.
CN 201220511622 2012-10-08 2012-10-08 Intelligent air pressure system for fuel gas water heater CN202813802U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220511622 CN202813802U (en) 2012-10-08 2012-10-08 Intelligent air pressure system for fuel gas water heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220511622 CN202813802U (en) 2012-10-08 2012-10-08 Intelligent air pressure system for fuel gas water heater

Publications (1)

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CN202813802U true CN202813802U (en) 2013-03-20

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103727676A (en) * 2013-12-02 2014-04-16 芜湖美的厨卫电器制造有限公司 Gas water heater
CN104047881A (en) * 2014-06-13 2014-09-17 佛山市顺德万和电气配件有限公司 Integration control device for direct current fan
CN106885378A (en) * 2017-03-31 2017-06-23 广东万和新电气股份有限公司 Gas heater wind resistance pressure control system
WO2018040446A1 (en) * 2016-08-31 2018-03-08 芜湖美的厨卫电器制造有限公司 Gas water heater and security control system and method therefor
WO2018040433A1 (en) * 2016-08-31 2018-03-08 芜湖美的厨卫电器制造有限公司 Gas water heater and safety control system and method therefor
WO2018040447A1 (en) * 2016-08-31 2018-03-08 芜湖美的厨卫电器制造有限公司 Gas water heater and security control system and method therefor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103727676A (en) * 2013-12-02 2014-04-16 芜湖美的厨卫电器制造有限公司 Gas water heater
CN103727676B (en) * 2013-12-02 2017-01-18 芜湖美的厨卫电器制造有限公司 Gas water heater
CN104047881A (en) * 2014-06-13 2014-09-17 佛山市顺德万和电气配件有限公司 Integration control device for direct current fan
CN104047881B (en) * 2014-06-13 2016-08-03 佛山市顺德万和电气配件有限公司 The integrated control device of DC fan
WO2018040446A1 (en) * 2016-08-31 2018-03-08 芜湖美的厨卫电器制造有限公司 Gas water heater and security control system and method therefor
WO2018040433A1 (en) * 2016-08-31 2018-03-08 芜湖美的厨卫电器制造有限公司 Gas water heater and safety control system and method therefor
WO2018040447A1 (en) * 2016-08-31 2018-03-08 芜湖美的厨卫电器制造有限公司 Gas water heater and security control system and method therefor
CN106885378A (en) * 2017-03-31 2017-06-23 广东万和新电气股份有限公司 Gas heater wind resistance pressure control system

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C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130320

Termination date: 20141008

EXPY Termination of patent right or utility model