CN108757530A - A kind of DC fan method for controlling number of revolution, system and gas heater - Google Patents
A kind of DC fan method for controlling number of revolution, system and gas heater Download PDFInfo
- Publication number
- CN108757530A CN108757530A CN201810366543.3A CN201810366543A CN108757530A CN 108757530 A CN108757530 A CN 108757530A CN 201810366543 A CN201810366543 A CN 201810366543A CN 108757530 A CN108757530 A CN 108757530A
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- Prior art keywords
- fan
- setting
- speed
- current
- rotating speed
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
Abstract
The present invention discloses a kind of DC fan method for controlling number of revolution, for controlling the DC fan work of gas heater, includes the following steps：1) one rotating speed of each load setting and minimum current of corresponding gas heater；2) in the case where load does not change, when DC fan rotating speed is less than setting speed, increases wind turbine electric current, enable DC fan rotating speed=setting speed；When rotation speed of fan is more than setting speed and wind turbine electric current is more than setting minimum current, wind turbine electric current is reduced, when wind turbine electric current=setting electric current or rotation speed of fan=setting speed, wind turbine electric current stops declining；3) when load changes, DC fan with corresponding to the load after changing setting speed and setting minimum current work.The present invention organically combines permanent rotating speed and constant current driving, and combustion resonance problem caused by cold-starting is avoided again while ensureing gas heater resisting wind press capacity.The present invention also provides a kind of DC fan revolution speed control system and gas heaters.
Description
Technical field
The present invention relates to strong drum type gas heater technical field more particularly to a kind of DC fan method for controlling number of revolution,
System and gas heater.
Background technology
Gas heater enters average family extensively, but the air draft problem of gas heater is also very prominent, especially
It is mounted in the high situation of the external exhaust gas wind pressure such as high-storey.Often situations such as exhaust gas recirculation, down draught occurs, or even reduce burning
Efficiency generates a large amount of CO, and severe one influences the security of the lives and property.Reach Wind-Pressure Resistance effect to adapt to external wind buckling, present is strong
In drum type water heater, DC fan majority uses constant current speed governing.However, constant current speed governing starts at low ambient temperatures because turning
Speed is too low to be susceptible to combustion resonance.
Invention content
For problems of the prior art, the purpose of the present invention is to provide one kind both having can guarantee that gas heater was anti-
Wind pressure property avoids cold-starting rotating speed from causing the DC fan method for controlling number of revolution of combustion resonance slowly again.
To achieve the above objectives, the present invention adopts the following technical scheme that.
A kind of DC fan method for controlling number of revolution, for controlling the DC fan work of gas heater, which is characterized in that
Include the following steps：
1) one rotating speed of each load setting and minimum current of corresponding gas heater；
2) in the case where load does not change, when DC fan rotating speed is less than setting speed, increase wind turbine electric current,
Enable DC fan rotating speed=setting speed；When rotation speed of fan is more than setting speed and wind turbine electric current is more than setting minimum current,
Wind turbine electric current is reduced, when wind turbine electric current=setting electric current or rotation speed of fan=setting speed, wind turbine electric current stops declining；
3) when load changes, DC fan with corresponding to the load after changing setting speed and set minimum electricity
Stream works.
As a further illustration of the above scheme, payload is judged according to the gas ratio valve electric current of gas heater,
The existing rotating speed of DC fan is monitored by rotating speed and minimum current set under load again.
As a further illustration of the above scheme, in the case where load does not change, increase when external wind presses off the beginning
When, since DC fan load lightens, DC fan rotating speed rises, and at this moment, control wind turbine electric current declines, and enables DC fan rotating speed
Drop to the rotating speed of setting；No longer decline when wind turbine electric current drops to the minimum current of setting.
Invention additionally discloses a kind of DC fan revolution speed control systems, which is characterized in that as described above straight for realizing
Flow fan method for controlling number of revolution, the system include：Controller, the gas ratio valve current detection module and electricity being connect with controller
Machine drive module is stored with rotating speed and minimum current corresponding to each load of gas heater, controller root in controller
The signal fed back according to gas ratio valve current detection module determines the current loads of gas heater, and right according to current loads institute
The rotating speed and minimum current answered control DC fan work by motor drive module.
As a further illustration of the above scheme, the controller is gas heater master controller.
Invention additionally discloses a kind of gas heaters, including：Master controller, the gas ratio valve being connect with master controller and
DC fan, which is characterized in that the rotating speed and minimum electricity being stored in master controller corresponding to each load of gas heater
Stream, master controller determine the current loads of gas heater, and root according to the signal that gas ratio valve current detection module is fed back
According to corresponding to current loads rotating speed and minimum current control DC fan work, control method is as described above.
As a further illustration of the above scheme, the gas heater is strong drum type or strong pumping type gas heater.
The beneficial effects of the invention are as follows：
When gas heater normal combustion, DC fan effectively solves low according to the rotary speed working set under each load
The excessively slow problem of startup temperature rotating speed；Gas heater when Wind-Pressure Resistance is burnt, not less than the minimum current of setting protect by wind turbine electric current
Demonstrate,prove resisting wind press capacity.
Description of the drawings：
Fig. 1 show DC fan method for controlling number of revolution flow chart.
Specific implementation mode
In the description of the present invention, it should be noted that " transverse direction ", " vertical if any term "center" for the noun of locality
To ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top",
The indicating positions such as "bottom", "inner", "outside", " clockwise ", " counterclockwise " and position relationship are orientation based on ... shown in the drawings or position
Relationship is set, the narration present invention is merely for convenience of and simplifies description, device is not indicated or implied the indicated or element is necessary
It constructs and operates with specific orientation, with particular orientation, should not be understood as the specific protection domain of the limitation present invention.
In addition, being used for description purposes only if any term " first ", " second ", it is not understood to indicate or imply relatively heavy
The property wanted or the quantity for implicitly indicating technical characteristic." first " is defined as a result, " second " feature can be expressed or implicit include
One or more this feature, in the present description, " at least " are meant that one or more, unless otherwise clearly having
The restriction of body.
In the present invention, except as otherwise clear stipulaties and restriction, should make if any term " assembling ", " connected ", " connection " term
Broad sense goes to understand, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；Can also be that machinery connects
It connects；It can be directly connected, can also be to be connected by intermediary, can be connected inside two elements.For ability
For the those of ordinary skill of domain, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In invention, unless otherwise specified and limited, fisrt feature the "upper" of second feature or "lower" may include
First and second features are in direct contact, can also include fisrt feature and second feature not be in direct contact but by them it
Between other characterisation contact.Moreover, fisrt feature second feature " on ", " under " and " above " include fisrt feature
Right over two features and oblique upper, or be only to indicate that fisrt feature level height is higher than the height of second feature.Fisrt feature
Second feature " on ", " under " and " below " include that fisrt feature is directly under or diagonally below the second feature, or only table
Show that fisrt feature level height is less than second feature.
With reference to the attached drawing of specification, the specific implementation mode of the present invention is further described, makes the present invention's
Technical solution and advantage are clearer, clear.Embodiment is described below with reference to attached drawing to be exemplary, it is intended to solve
The present invention is released, and is not considered as limiting the invention.
Embodiment one
As shown in Figure 1, a kind of DC fan method for controlling number of revolution, for controlling the DC fan work of gas heater,
It is characterized by comprising the following steps：
1) each load setting one rotating speed V and minimum current I of corresponding gas heater.
2) in the case where load does not change, when DC fan rotating speed v is less than setting speed V, increase wind turbine electricity
Stream, enables v=V；When rotation speed of fan v is more than setting speed V and wind turbine electric current i is more than setting minimum current I, wind turbine electric current is reduced
I, as i=I or v=V, wind turbine electric current stops declining.
3) when load changes, DC fan with corresponding to the load after changing setting speed and set minimum electricity
Stream works.
In actual work, payload is judged according to the gas ratio valve electric current of gas heater, then by set under load
Fixed rotating speed and minimum current is monitored the existing rotating speed of DC fan.When external wind, which presses off the beginning, to be increased, due to direct current
Fans load lightens, and DC fan rotating speed rises, and at this moment, control wind turbine electric current declines, and DC fan rotating speed is enabled to drop to setting
Rotating speed；No longer decline when wind turbine electric current drops to the minimum current of setting.
A kind of DC fan method for controlling number of revolution provided in this embodiment, when gas heater normal combustion, DC fan
According to the rotary speed working set under each load, effectively solve the problems, such as that cold-starting rotating speed is excessively slow；Gas heater is in wind resistance
When compression ignition is burnt, wind turbine electric current ensures resisting wind press capacity not less than the minimum current of setting.
Embodiment two
A kind of DC fan revolution speed control system is used for realizing the DC fan rotating speed controlling party as described in embodiment one
Method, the system include：Controller, the gas ratio valve current detection module and motor drive module being connect with controller, is being controlled
Rotating speed and minimum current corresponding to each load of gas heater are stored in device processed, controller is according to gas ratio valve electric current
The signal of detection module feedback determines the current loads of gas heater, and the rotating speed corresponding to current loads and minimum electricity
Stream controls DC fan work by motor drive module.The controller is gas heater master controller.
Embodiment three
A kind of gas heater, including：Master controller, the gas ratio valve and DC fan being connect with master controller,
It is characterized in that, rotating speed and minimum current corresponding to each load of gas heater, master controller is stored in master controller
The signal fed back according to gas ratio valve current detection module determines the current loads of gas heater, and according to current loads institute
Corresponding rotating speed and minimum current control DC fan work, control method is as described in embodiment one.
The gas heater can be strong drum type or strong pumping type gas heater.
From the foregoing description of structures and principles it should be understood by those skilled in the art that, the present invention not office
It is limited to above-mentioned specific implementation mode, uses the improvement of techniques well known and replacement to all fall within this hair on the basis of the present invention
Bright protection domain, protection scope of the present invention should limit it by each claim and its equivalent.In specific implementation mode
The part not illustrated is the prior art or common knowledge.
Claims (7)
1. a kind of DC fan method for controlling number of revolution, for controlling the DC fan work of gas heater, which is characterized in that packet
Include following steps：
1) one rotating speed of each load setting and minimum current of corresponding gas heater；
2) in the case where load does not change, when DC fan rotating speed is less than setting speed, increase wind turbine electric current, enable straight
Flow fan rotating speed=setting speed；When rotation speed of fan is more than setting speed and wind turbine electric current is more than setting minimum current, reduce
Wind turbine electric current, when wind turbine electric current=setting electric current or rotation speed of fan=setting speed, wind turbine electric current stops declining；
3) when load changes, DC fan with corresponding to the load after changing setting speed and setting minimum current into
Row work.
2. a kind of DC fan method for controlling number of revolution according to claim 1, which is characterized in that according to gas heater
Gas ratio valve electric current judges payload, then by rotating speed and minimum current set under load to existing turn of DC fan
Speed is monitored.
3. a kind of DC fan method for controlling number of revolution according to claim 1, which is characterized in that do not change in load
In the case of, when external wind, which presses off the beginning, to be increased, since DC fan load lightens, DC fan rotating speed rises, at this moment, control
Wind turbine electric current declines, and DC fan rotating speed is enabled to drop to the rotating speed of setting；When wind turbine electric current drops to the minimum current of setting
No longer decline.
4. a kind of DC fan revolution speed control system, which is characterized in that for realizing as described in any one of claim 1-3
DC fan method for controlling number of revolution, which includes：Controller, the gas ratio valve current detection module being connect with controller
And motor drive module, it is stored with rotating speed and minimum current corresponding to each load of gas heater in controller, controls
Device determines the current loads of gas heater according to the signal that gas ratio valve current detection module is fed back, and according to current loads
Corresponding rotating speed and minimum current controls DC fan work by motor drive module.
5. a kind of DC fan revolution speed control system according to claim 4, which is characterized in that the controller is combustion gas
Water heater master controller.
6. a kind of gas heater, including：Master controller, the gas ratio valve and DC fan being connect with master controller are special
Sign is, rotating speed and minimum current corresponding to each load of gas heater, master controller root are stored in master controller
The signal fed back according to gas ratio valve current detection module determines the current loads of gas heater, and right according to current loads institute
Rotating speed and minimum current the control DC fan work answered, control method is as described in any one of claim 1-3.
7. a kind of gas heater according to claim 6, which is characterized in that it is strong drum type or strong pumping type gas and hot water
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810366543.3A CN108757530A (en) | 2018-04-23 | 2018-04-23 | A kind of DC fan method for controlling number of revolution, system and gas heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810366543.3A CN108757530A (en) | 2018-04-23 | 2018-04-23 | A kind of DC fan method for controlling number of revolution, system and gas heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108757530A true CN108757530A (en) | 2018-11-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810366543.3A Pending CN108757530A (en) | 2018-04-23 | 2018-04-23 | A kind of DC fan method for controlling number of revolution, system and gas heater |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631344A (en) * | 2018-11-14 | 2019-04-16 | 广东万和新电气股份有限公司 | More gas source self-adapting regulation methods, control system and the gas heater with it |
| CN111964269A (en) * | 2020-07-27 | 2020-11-20 | 广东万和新电气股份有限公司 | Gas water heater and automatic judgment and control method for rotating speed precision of fan of gas water heater |
| CN114151975A (en) * | 2021-11-26 | 2022-03-08 | 广东万和新电气股份有限公司 | Gas water heater and control method and control device thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05312316A (en) * | 1992-05-15 | 1993-11-22 | Harman Co Ltd | Combustion fan control device |
| JPH08224425A (en) * | 1996-01-16 | 1996-09-03 | Rinnai Corp | Method for detecting filter clogging |
| JP2004183928A (en) * | 2002-11-29 | 2004-07-02 | Rinnai Corp | Method of regulating burning appliance |
-
2018
- 2018-04-23 CN CN201810366543.3A patent/CN108757530A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05312316A (en) * | 1992-05-15 | 1993-11-22 | Harman Co Ltd | Combustion fan control device |
| JPH08224425A (en) * | 1996-01-16 | 1996-09-03 | Rinnai Corp | Method for detecting filter clogging |
| JP2004183928A (en) * | 2002-11-29 | 2004-07-02 | Rinnai Corp | Method of regulating burning appliance |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631344A (en) * | 2018-11-14 | 2019-04-16 | 广东万和新电气股份有限公司 | More gas source self-adapting regulation methods, control system and the gas heater with it |
| CN109631344B (en) * | 2018-11-14 | 2024-01-02 | 广东万和新电气股份有限公司 | Multi-air-source self-adaptive adjustment method, control system and gas water heater with same |
| CN111964269A (en) * | 2020-07-27 | 2020-11-20 | 广东万和新电气股份有限公司 | Gas water heater and automatic judgment and control method for rotating speed precision of fan of gas water heater |
| CN111964269B (en) * | 2020-07-27 | 2022-01-11 | 广东万和新电气股份有限公司 | Gas water heater and automatic judgment and control method for rotating speed precision of fan of gas water heater |
| CN114151975A (en) * | 2021-11-26 | 2022-03-08 | 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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Application publication date: 20181106 |
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