CN2290816Y - Fan synchronous controller of forced discharging gas water heater - Google Patents
Fan synchronous controller of forced discharging gas water heater Download PDFInfo
- Publication number
- CN2290816Y CN2290816Y CN 97234841 CN97234841U CN2290816Y CN 2290816 Y CN2290816 Y CN 2290816Y CN 97234841 CN97234841 CN 97234841 CN 97234841 U CN97234841 U CN 97234841U CN 2290816 Y CN2290816 Y CN 2290816Y
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- CN
- China
- Prior art keywords
- fan
- firepower
- rotation speed
- checkout gear
- blower fan
- 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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Abstract
The utility model provides a fan synchronous controller of a forced discharging gas water heater. A fan is simply interlocked with an ignition switch in the traditional forced discharging gas water heater. The utility model provides a fan synchronous controller, comprising a fan rotating speed detector, a rotating speed signal processing unit, a fire detector, a comparator, and a fan controller, wherein, the fan rotating speed detector generates a rotating speed signal indicating the fan rotating speed; the rotating speed signal of the fan is processed by the rotating speed signal processing unit; the fire detector exports a fire signal; the rotating speed signal is compared with the fire signal by the comparator; the fan controller is connected with the comparator, and the operation of the fan is controlled by the comparative result generated by the comparator.
Description
The utility model relates to a kind of fan controller, relates in particular to a kind of blower fan sync control device of forced exhaust formula gas heater.
The formula gas heater is a kind of water supply pipe end that is serially connected in fast, adopts the direct combustion gas tools that heat the water that flows through water heater of gas fuel burning such as coal gas.Usually, press the supply and exhaust mode, can be divided into open type (straight-line), closed, semi-hermetic type to quick formula gas heater.Semi-hermetic type can be divided into nature chimney flue type and forced exhaust formula again.Because natural Flue Gas Water Heater is installed difficulty, and anti-down draught ability, be difficult to guarantee cause day by day the security performance of the water heater of people's extensive concern.Thereby just at present, gas heater develops towards forced exhaust formula direction.The utility model just relates to the improvement to this forced exhaust formula gas heater.
Forced exhaust formula water heater utilizes the blower fan that is provided with in it, for burner provides burning needed air, and makes formation malleation in the combustion chamber, forces discharge outdoor by flue flue gas.But, at present, the blower fan in this forced exhaust formula water heater, just simply with the ignition switch interlock, that is, after the water heater ignition, blower fan just begins to rotate, after water heater was flame-out, blower fan just stopped operating, and the rotation situation of blower fan and the burning degree of water heater are irrelevant.This has caused following problems.Because under the stable situation of discharge, the water temperature of water heater output is by controlling by flame size.And different flames when burning required air capacity be different, when blower fan during with invariable rotational speed, the air capacity that it provided also is constant, so present blower fan can not make combustion gas and AIR Proportional keep mating.
Therefore, the purpose of this utility model is to provide a kind of blower fan sync control device of forced exhaust formula gas heater, and it can regulate the air capacity that blower fan provides according to the burning degree of water heater, thereby makes combustion gas and AIR Proportional keep coupling.
Forced exhaust formula gas heater blower fan sync control device of the present utility model comprises:
Detect the rotation speed of fan checkout gear of rotation speed of fan, produce the tach signal of an expression rotation speed of fan;
The tach signal treating apparatus links to each other with described rotation speed of fan checkout gear, and described rotation speed of fan signal is handled;
Detect the firepower checkout gear of current water heater firepower, export the firepower signal of a current firepower of expression;
Comparator, the output with described tach signal treating apparatus and described firepower checkout gear links to each other respectively, and described tach signal and described firepower signal are compared; And
Fan controller links to each other with described comparator, according to the comparative result of described comparator, and the running of control blower fan.
As mentioned above, owing to increased the running of controlling blower fan according to the current combustion case of water heater, so air capacity and current combustion case that blower fan is provided are complementary.
Below in conjunction with accompanying drawing embodiment of the present utility model is described.
Fig. 1 is the block diagram of blower fan sync control device of the present utility model;
Fig. 2 is the structural representation of Fig. 1 apoplexy tachometer;
Fig. 3 is the structural representation of Fig. 1 moderate heat force checking device;
Fig. 4 is the circuit diagram of Fig. 1 medium speed signal processing apparatus, comparator and fan controller.
As shown in Figure 1, blower fan sync control device of the present utility model comprises rotation speed of fan checkout gear 1, tach signal treating apparatus 2, firepower checkout gear 3, comparator 4 and fan controller 5.Rotation speed of fan checkout gear 1 links with blower fan, detect the rotating speed of blower fan, and produce one the expression rotation speed of fan tach signal, tach signal treating apparatus 2 links to each other with rotation speed of fan checkout gear 1, tach signal to 1 output of rotation speed of fan checkout gear is handled, and outputs to an input of the comparator 4 that is attached thereto.Firepower checkout gear 3 links with the firepower adjusting portion branch of water heater, detects the firepower of water heater, and exports the firepower signal of an expression firepower size, and this signal outputs to another input of comparator 4.Comparator 4 compares these two signals, exports a comparative result.The running of fan controller 5 blower fan that control is attached thereto according to comparative result.Promptly, when comparator 4 compares tach signal greater than the firepower signal, the air capacity that the expression blower fan provides is greater than the required air capacity of burning, fan controller 5 is according to this comparative result, cut off the power supply of blower fan, rotation speed of fan is slack-off gradually under the effect of inertia and resistance, and this moment, the tach signal of rotation speed of fan checkout gear 1 output also diminished gradually.When comparator 4 compares tach signal less than the firepower signal, the air capacity that the expression blower fan provides is less than the required air capacity of burning, fan controller 5 is according to this comparative result, recovery is to the power supply of blower fan, blower fan is rotated, the blower fan air capacity that provides and the required air capacity of burning dynamically are provided in so control blower fan running, thereby the efficiency of combustion of water heater is provided.
The concrete structure of each several part among Fig. 1 is described below with reference to each accompanying drawing.Fig. 2 shows a kind of structure of rotation speed of fan checkout gear 1.As shown in Figure 2, rotation speed of fan checkout gear 1 comprises magnet 11 and induction coil 12.Magnet 11 is fixed on the fan blade M1 of blower fan M, and coil 12 is fixed on the shell M2 of blower fan M after on the iron core 13.When the fan blade M1 of blower fan M rotated, magnet 11 rotated with fan blade M1, produce alternating magnetic field, thereby induction coil 12 induced alternating signal, and the frequency of this alternating signal is directly proportional with the rotating speed of fan blade M1.Therefore, this alternating signal signal can be represented the rotating speed of blower fan M, below it is called tach signal.As shown in Figure 1, rotation speed of fan checkout gear 1 detected tach signal is input to tach signal treating apparatus 2 and handles.In the present embodiment, magnet is fixed on the impeller of blower, in another embodiment, also can be on impeller of blower M1 fixing soft iron (not shown), induction coil 12 on magnet, and is fixed on the blower housing.This structure can detect the rotating speed of blower fan equally.
Fig. 3 shows the structural representation of firepower checkout gear 3.As shown in Figure 3, firepower checkout gear 3 comprises a drive 21 and a kind of potentiometer 22, and the firepower adjusting knob G interlock of water heater firepower is arranged to and is regulated to drive 21.And potentiometer 22 is arranged to and drive 21 coaxial rotation.When the user regulated water temperature by firepower adjusting knob G as required, drive 21 also rotated simultaneously, and drove potentiometer 22 rotations.Thereby export the firepower signal that is in proportion with firepower by potentiometer 22.
Fig. 4 shows the physical circuit figure of tach signal treating apparatus 2, comparator 4 and fan controller 5 among Fig. 1.In Fig. 4, coil L is the induction coil 12 among Fig. 2, and potentiometer W is the potentiometer 22 among Fig. 3.As shown in Figure 4, tach signal treating apparatus 2 comprises amplifying circuit and integrating circuit.Amplifying circuit is an operational amplifier A, it amplifies the tach signal that induction coil L produces, and carry out integration by the follow-up integrating circuit of forming by capacitor C1, resistor R 1 and diode D1 and D2, on capacitor C1, produce the direct current tachometer signal that voltage is directly proportional with rotating speed.This direct current tachometer signal is input to an input of comparator 4.Potentiometer W connects into a bleeder circuit, and the cursor slide of potentiometer W is connected to another input of comparator 4, and along with the slip of potentiometer W, the voltage of exporting on its cursor slide also changes.In the present embodiment, comparator 4 is made of operational amplifier.The tach signal and the firepower signal of 4 pairs of inputs of comparator compare.When tach signal during greater than the firepower signal, comparator 4 output high level make the light emitting diode among the photocoupler GD that output with it links to each other not luminous, and photocoupler GD ends, but thereby making the not conducting of keyholed back plate TD that is subjected to its control, AC blower fan M can not get electric power and stops operating.Under the effect of inertia and resistance, rotating speed slows down gradually.Tach signal also reduces thereupon, when being reduced to less than the firepower signal, the output of comparator 4 transfers electronegative potential to by high potential, make the light emitting diode conducting of photocoupler GD luminous, the triode conducting among the photocoupler GD provides control voltage to controllable silicon TD, like this, controllable silicon TD conducting constitutes the current supply circuit of blower fan M with four diode D3 to D6, and blower fan M gets the electric operation that restarts.So repeat this process, the air capacity that blower fan M is provided adapts with firepower all the time.
Claims (6)
1, a kind of blower fan sync control device of forced exhaust formula gas heater is characterized in that, comprises:
Detect the rotation speed of fan checkout gear of rotation speed of fan, produce the tach signal of an expression rotation speed of fan;
The tach signal treating apparatus links to each other with described rotation speed of fan checkout gear, and described rotation speed of fan signal is handled;
Detect the firepower checkout gear of current water heater firepower, export the firepower signal of a current firepower of expression;
Comparator, the output with described tach signal treating apparatus and described firepower checkout gear links to each other respectively, and described tach signal and described firepower signal are compared; And
Fan controller links to each other with described comparator, according to the comparative result of described comparator, and the running of control blower fan.
2, blower fan sync control device as claimed in claim 1 is characterized in that, described rotation speed of fan checkout gear comprises the magnet that is fixed on the impeller of blower and is fixed in the induction coil on the iron core on the blower housing.
3, blower fan sync control device as claimed in claim 1 is characterized in that, described rotation speed of fan checkout gear comprises the soft iron that is fixed on the impeller of blower and is fixed in the induction coil on the magnet on the blower housing.
4, blower fan sync control device as claimed in claim 1 is characterized in that, described firepower checkout gear comprise with the drive of the firepower adjusting knob of water heater interlock and can with the potentiometer of described drive coaxial rotation.
5, blower fan sync control device as claimed in claim 1 is characterized in that, described tach signal treating apparatus comprises amplifying circuit and integrating circuit.
6, blower fan sync control device as claimed in claim 1 is characterized in that, described fan controller comprises a photocoupler that links to each other with described comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97234841 CN2290816Y (en) | 1997-06-19 | 1997-06-19 | Fan synchronous controller of forced discharging gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97234841 CN2290816Y (en) | 1997-06-19 | 1997-06-19 | Fan synchronous controller of forced discharging gas water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2290816Y true CN2290816Y (en) | 1998-09-09 |
Family
ID=33946092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97234841 Expired - Fee Related CN2290816Y (en) | 1997-06-19 | 1997-06-19 | Fan synchronous controller of forced discharging gas water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2290816Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100491857C (en) * | 2003-10-15 | 2009-05-27 | 中山华帝燃具股份有限公司 | Domestic gas instantaneous water heater capable of realizing gas-air proportional control |
| CN102538214A (en) * | 2012-01-19 | 2012-07-04 | 中山华帝燃具股份有限公司 | Smoke discharge blockage control method and system for gas water heater |
| CN113432308A (en) * | 2021-07-30 | 2021-09-24 | 广东万和新电气股份有限公司 | Gas water heater and control method and control device thereof |
-
1997
- 1997-06-19 CN CN 97234841 patent/CN2290816Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100491857C (en) * | 2003-10-15 | 2009-05-27 | 中山华帝燃具股份有限公司 | Domestic gas instantaneous water heater capable of realizing gas-air proportional control |
| CN102538214A (en) * | 2012-01-19 | 2012-07-04 | 中山华帝燃具股份有限公司 | Smoke discharge blockage control method and system for gas water heater |
| CN113432308A (en) * | 2021-07-30 | 2021-09-24 | 广东万和新电气股份有限公司 | Gas water heater and control method and control device thereof |
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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 |