CN108019955A - The control system of fan of gas water heater constant current output - Google Patents
The control system of fan of gas water heater constant current output Download PDFInfo
- Publication number
- CN108019955A CN108019955A CN201711391933.8A CN201711391933A CN108019955A CN 108019955 A CN108019955 A CN 108019955A CN 201711391933 A CN201711391933 A CN 201711391933A CN 108019955 A CN108019955 A CN 108019955A
- Authority
- CN
- China
- Prior art keywords
- current
- module
- wind turbine
- value
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
Abstract
A kind of control system of fan of gas water heater constant current output, including electric current setup module, fan operation drive module, current feedback read module, current comparing module and current adjusting module.The electric current setup module determines the current setting value of wind turbine；Current setting value is delivered to wind turbine by the fan operation drive module；The current feedback read module reads the current output value of current wind turbine；The current comparing module by the current output value of reading compared with current setting value, and determine current differential；Current differential is converted into PWM value and is conveyed to electric current setup module by the current adjusting module.The actual output current of the present invention is consistent with setting electric current, remains unchanged wind turbine output power, so that reaching actual exhaust air rate can also be maintained in the range of setting when external environment changes, burning effect will not be influenced by outside environmental elements.
Description
Technical field
The present invention relates to gas heater field, especially a kind of control system of fan of gas water heater constant current output
System.
Background technology
Fan of gas water heater is divided into two kinds on the market at present, and one kind is AC blower fan, by detecting mains waveform
Zero point carry out delays time to control wind turbine output, reach adjustment of rotational speed control, or control without adjustment；Another kind is exactly direct current
Wind turbine, rotation speed of fan is controlled by adjusting output voltage；Both the above carries out using rotating speed as benchmark during control
Adjustment, using gas outlet amount as benchmark is adjusted during fan operation, the corresponding setting rotation speed of fan of relation in proportion.This mode compared with
Simply it is easy to control, but, easily cause air draft to change in extraneous environmental change, when having slight blocking such as flue, exhaust air rate reduces
Impeller of blower resistance can also reduce, and rotation speed of fan will improve at this time, in this way, in the case of constant rotation speed of fan, also just make combustion
The proportionate relationship disequilibrium of indoor combustion gas and air is burnt, so that burning effect declines, but also can thus cause exhaust gas
It is exceeded.
The content of the invention
In order to overcome drawbacks described above, the present invention provides a kind of control system of fan of gas water heater constant current output,
It makes burning effect not by that under extraneous such environmental effects exhaust air rate will not be caused to change to realize wind turbine current constant control
It can be influenced by outside environmental elements.
The present invention in order to solve its technical problem used by technical solution be：A kind of fan of gas water heater constant current
The control system of output, including electric current setup module, fan operation drive module, current feedback read module, electric current compare mould
Block and current adjusting module, the electric current setup module determine the current setting value of wind turbine；The fan operation drive module
Current setting value is delivered to wind turbine；The current feedback read module reads the current output value of current wind turbine；The electric current
Comparison module by the current output value of reading compared with current setting value, and determine current differential；The electric current adjusts mould
Current differential is converted into PWM value and is conveyed to electric current setup module by block.
The beneficial effects of the invention are as follows：The control system of fan of gas water heater constant current output of the present invention passes through feedback
Electric current compensates compared with setting electric current, then by difference, and it is consistent with setting electric current to reach actual output current, makes wind turbine
Output power remains unchanged, so that reaching actual exhaust air rate can also be maintained in the range of setting when external environment changes,
Burning effect will not be influenced by outside environmental elements.
Brief description of the drawings
Fig. 1 is the software function module schematic diagram of the control system of fan of gas water heater constant current of the present invention output.
Fig. 2 is the flow chart of the control system of fan of gas water heater constant current of the present invention output.
Embodiment
Please refer to Fig.1, a kind of control system of fan of gas water heater constant current output, including electric current setup module,
Fan operation drive module, current feedback read module, current comparing module and current adjusting module, the electric current set mould
Block determines the current setting value of wind turbine；Current setting value is delivered to wind turbine by the fan operation drive module；The electric current is anti-
Present the current output value that read module reads current wind turbine；The current comparing module sets the current output value of reading with electric current
Definite value is compared, and determines current differential；Current differential is converted into PWM (Pulse Width by the current adjusting module
Modulation, pulse width modulation) value is conveyed to electric current setup module.
The course of work of the control system of fan of gas water heater constant current output of the present invention please refers to Fig.2：Start heat
Device working fan sets program to calculate the corresponding current value of wind turbine according to gas outlet gauge, when setting electric current to be more than zero, is then loaded into
Set program that current value is converted into reality output PWM value and be sent into startup operation program, start fan operation.Wind turbine starts operation
Actual current is currently run by feeding back detection Programmable detection wind turbine afterwards, setting electric current through electric current comparison program, (electric current is set
Value) compared with detection electric current (current output value), do not set as detected electric current in current range, then calculating increase and decrease
Amount, when detecting electric current more than electric current is set, then reduces PWM value, when being less than setting electric current as detected electric current, then increases PWM value,
Increase and decrease output PWM value is calculated through being loaded into output program, adjustment output PWM programs is sent, is calculated in adjustment exports PWM programs
Go out actual PWM value, be re-fed into wind turbine and program is set, carry out readjusting output PWM parameters, be updated over electric current identification, do not weigh such as
New to set wind turbine electric current, then being adjusted fan operation program and resetting PWM value and export makes fan operation in the range of predetermined current.
PWM value, that is, duty cycle, is high level time ratio shared within a cycle.
The present invention is compensated by feedback current compared with setting electric current, then by difference, reaches reality output electricity
Stream is consistent with setting electric current, remains unchanged wind turbine output power, changes so as to reach actual exhaust air rate in external environment
When can also be maintained in the range of setting, burning effect will not be influenced by outside environmental elements.
Claims (1)
- A kind of 1. control system of fan of gas water heater constant current output, it is characterised in that：Including electric current setup module, wind Machine operation drive module, current feedback read module, current comparing module and current adjusting module, the electric current setup module Determine the current setting value of wind turbine；Current setting value is delivered to wind turbine by the fan operation drive module；The current feedback Read module reads the current output value of current wind turbine；The current comparing module sets the current output value of reading and electric current Value is compared, and determines current differential；Current differential is converted into PWM value and is conveyed to electric current setting by the current adjusting module Module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711391933.8A CN108019955A (en) | 2017-12-21 | 2017-12-21 | The control system of fan of gas water heater constant current output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711391933.8A CN108019955A (en) | 2017-12-21 | 2017-12-21 | The control system of fan of gas water heater constant current output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108019955A true CN108019955A (en) | 2018-05-11 |
Family
ID=62074533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711391933.8A Pending CN108019955A (en) | 2017-12-21 | 2017-12-21 | The control system of fan of gas water heater constant current output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108019955A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145846A (en) * | 2019-05-17 | 2019-08-20 | 大榕(上海)智能科技有限公司 | A kind of control method and system that fresh air system air quantity is constant |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1752523A (en) * | 2004-09-21 | 2006-03-29 | 林内株式会社 | Burner |
| CN201561578U (en) * | 2009-12-08 | 2010-08-25 | 海尔集团公司 | Fan control device of a gas equipment |
| CN201739207U (en) * | 2010-05-18 | 2011-02-09 | 无锡和晶科技股份有限公司 | Gas water heater fan control and feedback circuit |
| CN102192808A (en) * | 2010-03-19 | 2011-09-21 | 海尔集团公司 | Device and method for detecting wind pressure |
| US20140023976A1 (en) * | 2008-05-27 | 2014-01-23 | Honeywell International, Inc. | Combustion blower control for modulating furnace |
| CN204677482U (en) * | 2015-05-13 | 2015-09-30 | 峰岹科技（深圳）有限公司 | A kind of brshless DC motor permanent wind amount control system |
| CN105570175A (en) * | 2016-03-07 | 2016-05-11 | 南京沃特电机有限公司 | Constant-air-volume motor drive control method for 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 |
-
2017
- 2017-12-21 CN CN201711391933.8A patent/CN108019955A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1752523A (en) * | 2004-09-21 | 2006-03-29 | 林内株式会社 | Burner |
| US20140023976A1 (en) * | 2008-05-27 | 2014-01-23 | Honeywell International, Inc. | Combustion blower control for modulating furnace |
| CN201561578U (en) * | 2009-12-08 | 2010-08-25 | 海尔集团公司 | Fan control device of a gas equipment |
| CN102192808A (en) * | 2010-03-19 | 2011-09-21 | 海尔集团公司 | Device and method for detecting wind pressure |
| CN201739207U (en) * | 2010-05-18 | 2011-02-09 | 无锡和晶科技股份有限公司 | Gas water heater fan control and feedback circuit |
| CN204677482U (en) * | 2015-05-13 | 2015-09-30 | 峰岹科技（深圳）有限公司 | A kind of brshless DC motor permanent wind amount control system |
| CN105570175A (en) * | 2016-03-07 | 2016-05-11 | 南京沃特电机有限公司 | Constant-air-volume motor drive control method for 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145846A (en) * | 2019-05-17 | 2019-08-20 | 大榕(上海)智能科技有限公司 | A kind of control method and system that fresh air system air quantity is constant |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180511 |