CN107339809B - A kind of method for controlling combustion of gas heater - Google Patents
A kind of method for controlling combustion of gas heater Download PDFInfo
- Publication number
- CN107339809B CN107339809B CN201710059607.0A CN201710059607A CN107339809B CN 107339809 B CN107339809 B CN 107339809B CN 201710059607 A CN201710059607 A CN 201710059607A CN 107339809 B CN107339809 B CN 107339809B
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- Prior art keywords
- proportional valve
- electromagnetic proportional
- combustion
- sections
- blower
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- 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.)
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Classifications
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- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/025—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using electrical or electromechanical means
Abstract
The present invention relates to a kind of method for controlling combustion of gas heater, the gas heater includes the first electromagnetic proportional valve, the second electromagnetic proportional valve, blower, igniter, burner and main valve, and master board, there are three types of operating modes for master board tool, corresponding combustion parameter is corresponding under every kind of operating mode, and under one section of operating mode, first electromagnetic proportional valve is opened, under two sections of operating modes, second electromagnetic proportional valve is opened, under three sections of operating modes, the first electromagnetic proportional valve and the second electromagnetic proportional valve are opened.The present invention passes through the size for judging Actual combustion power and firing power, has then further determined whether extraneous wind pressure data, then dynamic adjustment is carried out to the combustion parameter of gas heater, to guarantee that burner will not be blown out when wind pressure is excessive.
Description
Technical field
The present invention relates to a kind of method for controlling combustion of gas heater.
Background technique
Domestic gas-fired water heater during use will face many uncontrollable factors, as flow of inlet water fluctuation,
Wind pressure caused by the purity of burning gases, the range of the air pressure of burning gases, the external world blow is excessive etc., these factors may shadow
It rings the temperature persistance of gas heater or gas heater is caused to can not work normally.Machine caused by wherein wind pressure is excessive without
The problem of method is burnt and brought becomes increasingly conspicuous, and such as the high-rise buildings in coastal cities, water heater air outlet often has very big wind-force,
After wind-force reaches some strength water heater will occur ignition point not or the problems such as being blown out suddenly when being burning, this
A little problems decline the accommodative ability of environment of domestic gas-fired water heater.For the excessive problem of wind pressure, this paper presents one kind to resist
The machine that the AC blower fan system when wind pressure is excessive may be implemented in wind pressure technology can also burn without being blown out.
In addition, domestic gas-fired water heater forms Smaller load area according to the intercombination of difference solenoid valve when water heater working
With big loading zone, remain that a region is burnt always after water heater working, our this spline structure is referred to as to have Chang Ming
Fiery structure and variable open fire structure.There is the gas heater structure of Chang Minghuo structure shown in Figure 1, this gas heater is deposited
In 2 kinds of operating modes: when solenoid valve SV1 is individually opened, gas water heater working is in 1 stage mode, when solenoid valve SV1 and electromagnetism
When valve SV2 is opened simultaneously, gas water heater working is in 2 stage modes.Since the corresponding region solenoid valve SV1 is burnt always
(referred to as Chang Minghuo), therefore be not in flame-out risk when 1 stage mode and 2 stage modes mutually switch.
The gas heater structure of variable open fire structure is shown in Figure 2, and there are 3 Working moulds for this kind of gas heater
Formula: solenoid valve SV1 individually opens work in 1 stage mode, and solenoid valve SV2 individually opens work in 2 stage modes, as solenoid valve SV1
Work is in 3 stage modes when opening simultaneously with solenoid valve SV2, above-mentioned 3 kinds of operating modes there is no have a certain section always in burning feelings
Condition, i.e., variable open fire, just will appear flame-out risk when 1 stage mode and 2 stage modes mutually switch at this time.
Summary of the invention
Primary technical problem to be solved by this invention is that a kind of combustion when wind pressure is excessive is provided for the above-mentioned prior art
The method for controlling combustion for the gas heater that burner will not be blown out.
The further technical problems to be solved of the present invention, which are to provide one kind burner when wind pressure is excessive, will not be blown out, be divided
Duan Huoli is not in the method for controlling combustion of the gas heater of flame-out risk when switching.
The technical scheme of the invention to solve the technical problem is: a kind of Combustion System side of gas heater
Method, the gas heater include burner, for the igniter to burner ignition, enter burner for controlling
How much the first how many electromagnetic proportional valve of interior burning gases, the second electromagnetic proportional valve enter in combustion chamber air capacity for controlling
DC fan, be arranged on admission line for being switched on or off the main valve into the burning gases in gas heater, use
In the master of the first electromagnetic proportional valve current value of control burning, the second electromagnetic proportional valve current value, rotation speed of fan and igniter opening and closing
Control panel, and the outlet valve connecting with master board, there are three types of operating modes: one section of operating mode, two for the master board tool
Section operating mode and three sections of operating modes, under one section of operating mode, main valve and the first electromagnetic proportional valve are opened, the second electromagnetism ratio
Example valve is closed；Under two sections of operating modes, main valve and the second electromagnetic proportional valve are opened, and the first electromagnetic proportional valve is closed；At three sections
Under operating mode, main valve, the first electromagnetic proportional valve and the second electromagnetic proportional valve are opened, it is characterised in that: in gas heater
Exhaust ports the wind pressure sensor for acquiring extraneous wind pressure data is installed, wind pressure sensor is connect with master board, described
Master board carries out Combustion System as follows:
Step 1: in the standby state, after the outlet valve of gas heater is opened, whether detection flow of inlet water is greater than setting
Threshold value, if so, executing step 2, if not being, return step one；
Step 2: blower executes step 3 after running the first setting time according to preset preceding cleaning wind speed；
Step 3: blower is run according to preset igniting wind speed, step 4 is then executed；
Step 4: main valve open, the first electromagnetic proportional valve are opened, the second electromagnetic proportional valve is closed, igniter opens igniting,
Then step 5 is executed；
Step 5: judging whether to light a fire successfully, if it is successful, executing one section of operating mode, make burner, blower according to one
Combustion parameter work under section operating mode, then executes step 6, such as unsuccessful, exports fault-signal；
Step 6: calculating currently practical combustion power, judge whether currently practical combustion power is less than ignition power,
If so, executing step 7, if not being, step 8 is executed；
Step 7: judge whether wind pressure sensor detects extraneous wind pressure data, if so, rotation speed of fan is improved, if not being,
One section of operating mode is continued to execute, so that burner, blower is worked according to the combustion parameter under one section of operating mode, then executes step
Rapid eight；
Step 8: judge whether to need switching working mode, if not being to continue to execute one section of operating mode, make burner,
Blower works according to the combustion parameter under one section of operating mode, then executes burning thermostatic control logic；If so, blower is according to pre-
If igniting wind speed operation, then execute step 9；
Step 9: calculating currently practical combustion power, judge whether currently practical combustion power is less than Working mould after switching
Combustion power needed for formula executes burning thermostatic control logic if not being；If so, returning to step seven.
The present invention solves technical solution used by above-mentioned further technical problem are as follows: in above-mentioned method for controlling combustion,
Burning thermostatic control logic includes the following steps:
Step 1 executes one section of operating mode, and burner, blower is made to work according to the combustion parameter under one section of operating mode,
Then judge whether to need to be switched to three sections of operating modes, if so, open the second electromagnetic proportional valve, make burner, blower according to
Combustion parameter work under three sections of operating modes, then executes step 6；If not being to judge whether to need to be switched to two sections of work
Mode, if not being, return step 1, if so, executing step 2；
Step 2, blower are run according to preset igniting wind speed, open the second electromagnetic proportional valve, make burner, blower according to
Combustion parameter work 300ms~800ms under three sections of operating modes, then executes step 3；
Step 3, the second electromagnetic proportional valve continue to be kept open, and close the first electromagnetic proportional valve, make burner, blower
According to the combustion parameter work under two sections of operating modes, step 4 is then executed；
Step 4 judges whether to need to be switched to three sections of operating modes, if so, opening the first electromagnetic proportional valve, makes to burn
Device, blower work according to the combustion parameter under three sections of operating modes, then execute step 6；If not being to judge whether to need to switch
To one section of operating mode, if not being, return step 3, if so, executing step 5；
Step 5, blower are run according to preset igniting wind speed, open the first electromagnetic proportional valve, make burner, blower according to
Combustion parameter work 300ms~800ms under three sections of operating modes, then returns to step 1；
Step 6 judges whether to need to be switched to one section of operating mode, if so, returning to step 1, if not being, judgement is
It is no to need to be switched to two sections of operating modes, if so, executing step 3, if not being, the second electromagnetic proportional valve is opened, burner, wind are made
Machine works according to the combustion parameter under three sections of operating modes, then executes step 6.
By above-mentioned control logic, so that gas heater is not in flame-out risk when being segmented firepower switching.
The currently practical combustion power=(current set temperature-inflow temperature) current water flow of *；Ignition power
And combustion power needed for three kinds of operating modes is standing parameter.
After wind pressure sensor detects extraneous wind pressure data, the numerical value of rotation speed of fan raising is big with extraneous wind pressure data
It is linear between small.
Compared with the prior art, the advantages of the present invention are as follows: the size by judging Actual combustion power and firing power,
Then it has further determined whether extraneous wind pressure data, dynamic adjustment then is carried out to the combustion parameter of gas heater, thus
Guarantee that burner will not be blown out when wind pressure is excessive；In further scheme, in one section of operating mode and two sections of operating modes
It when switching, is switched over again after first carrying out three sections of operating mode 300ms~800ms, which can greatly improve biography fire
Success rate.
Detailed description of the invention
Fig. 1 is the gas heater structural schematic diagram for having Chang Minghuo structure in the prior art；
Fig. 2 is the gas heater structural schematic diagram of variable open fire structure in the prior art；
Fig. 3 is gas heater structural schematic diagram in the embodiment of the present invention；
Fig. 4 is the method for controlling combustion flow chart of gas heater in the embodiment of the present invention；
Fig. 5 is the thermostatic control logical flow chart that burns in the embodiment of the present invention.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
A kind of method for controlling combustion of gas heater is present embodiments provided, wherein gas heater is primarily directed to
The gas heater of variable open fire structure, the structure of this kind of gas heater are shown in Figure 3 comprising burner, for giving
The igniter of burner ignition enters burning gases are how many in burner the first electromagnetic proportional valve, for controlling
Two electromagnetic proportional valves enter the DC fan that air capacity is how many in combustion chamber for controlling, are arranged on admission line for connecing
Main valve that is logical or closing the burning gases entered in gas heater, for controlling the first electromagnetic proportional valve current value of burning, the
The master board of two electromagnetic proportional valve current values, rotation speed of fan and igniter opening and closing, and the outlet valve being connect with master board, institute
Stating master board tool, there are three types of operating modes: one section of operating mode, two sections of operating modes and three sections of operating modes work at one section
Under mode, main valve and the first electromagnetic proportional valve are opened, and the second electromagnetic proportional valve is closed；Under two sections of operating modes, main valve and
Two electromagnetic proportional valves are opened, and the first electromagnetic proportional valve is closed；Under three sections of operating modes, main valve, the first electromagnetic proportional valve and
Two electromagnetic proportional valves are opened.In the present embodiment, install in the exhaust ports of gas heater for acquiring extraneous wind pressure data
Wind pressure sensor, wind pressure sensor connect with master board, and the master board carries out Combustion System as follows.
The method for controlling combustion of the gas heater includes the following steps, shown in Figure 4:
Step 1: in the standby state, after the outlet valve of gas heater is opened, whether detection flow of inlet water is greater than setting
Threshold value, in the present embodiment, given threshold 2.5L/min, if so, executing step 2, if not being, return step one；
Step 2: blower executes step 3 after running the first setting time according to preset preceding cleaning wind speed；
Step 3: blower is run according to preset igniting wind speed, step 4 is then executed；
Step 4: main valve open, the first electromagnetic proportional valve are opened, the second electromagnetic proportional valve is closed, igniter opens igniting,
Then step 5 is executed；
Step 5: judging whether to light a fire successfully, if it is successful, executing one section of operating mode, make burner, blower according to one
Combustion parameter work under section operating mode, then executes step 6, such as unsuccessful, exports fault-signal；
Step 6: calculating currently practical combustion power, judge whether currently practical combustion power is less than ignition power,
If so, executing step 7, if not being, step 8 is executed；The currently practical combustion power=(current set temperature-water inlet temperature
Degree) the current water flow of *；Ignition power is standing parameter；
Step 7: judge whether wind pressure sensor detects extraneous wind pressure data, if so, rotation speed of fan is improved, if not being,
One section of operating mode is continued to execute, so that burner, blower is worked according to the combustion parameter under one section of operating mode, then executes step
Rapid eight；After wind pressure sensor detects extraneous wind pressure data, the size of numerical value and extraneous wind pressure data that rotation speed of fan improves
Between it is linear, i.e., extraneous wind pressure data is bigger, and rotation speed of fan improves more；In addition, in the same of adjustment rotation speed of fan
When, the electric current of corresponding combusted proportion valve is adaptively adjusted, to obtain the purpose of mating adjusting；In gas water heater working process
In, the size of combusted proportion valve electric current can control the number into the gas of combustion chamber, and the size of the revolving speed of blower can be controlled
System enters the air capacity of combustion chamber, and the two match the temperature uniformity of adjustable water heater；
Step 8: judge whether to need switching working mode, if not being to continue to execute one section of operating mode, make burner,
Blower works according to the combustion parameter under one section of operating mode, then executes burning thermostatic control logic；If so, blower is according to pre-
If igniting wind speed operation, then execute step 9；
Step 9: calculating currently practical combustion power, judge whether currently practical combustion power is less than Working mould after switching
Combustion power needed for formula executes burning thermostatic control logic if not being；If so, returning to step seven；It is described currently practical
Combustion power=(current set temperature-inflow temperature) current water flow of *；Combustion power needed for three kinds of operating modes is normal
Setting parameter.
The burning thermostatic control logic includes the following steps, shown in Figure 5:
Step 1 executes one section of operating mode, and burner, blower is made to work according to the combustion parameter under one section of operating mode,
Then judge whether to need to be switched to three sections of operating modes, if so, open the second electromagnetic proportional valve, make burner, blower according to
Combustion parameter work under three sections of operating modes, then executes step 6；If not being to judge whether to need to be switched to two sections of work
Mode, if not being, return step 1, if so, executing step 2；
Step 2, blower are run according to preset igniting wind speed, open the second electromagnetic proportional valve, make burner, blower according to
Combustion parameter work 300ms~800ms under three sections of operating modes, then executes step 3；
Step 3, the second electromagnetic proportional valve continue to be kept open, and close the first electromagnetic proportional valve, make burner, blower
According to the combustion parameter work under two sections of operating modes, step 4 is then executed；
Step 4 judges whether to need to be switched to three sections of operating modes, if so, opening the first electromagnetic proportional valve, makes to burn
Device, blower work according to the combustion parameter under three sections of operating modes, then execute step 6；If not being to judge whether to need to switch
To one section of operating mode, if not being, return step 3, if so, executing step 5；
Step 5, blower are run according to preset igniting wind speed, open the first electromagnetic proportional valve, make burner, blower according to
Combustion parameter work 300ms~800ms under three sections of operating modes, then returns to step 1；
Step 6 judges whether to need to be switched to one section of operating mode, if so, returning to step 1, if not being, judgement is
It is no to need to be switched to two sections of operating modes, if so, executing step 3, if not being, the second electromagnetic proportional valve is opened, burner, wind are made
Machine works according to the combustion parameter under three sections of operating modes, then executes step 6.
Claims (3)
1. a kind of method for controlling combustion of gas heater, the gas heater include burner, for burner ignition
Igniter, for controlling the first electromagnetic proportional valve, the second solenoid-operated proportional that enter burning gases are how many in burner
Valve enters the how many DC fan of air capacity in combustion chamber for controlling, be arranged on admission line for be switched on or off into
Enter the main valve of the burning gases in gas heater, for controlling burning the first electromagnetic proportional valve current value, the second solenoid-operated proportional
The master board of valve current value, rotation speed of fan and igniter opening and closing, and the outlet valve being connect with master board, the master board
There are three types of operating modes for tool: one section of operating mode, two sections of operating modes and three sections of operating modes, main under one section of operating mode
Valve and the first electromagnetic proportional valve are opened, and the second electromagnetic proportional valve is closed；Under two sections of operating modes, main valve and the second solenoid-operated proportional
Valve is opened, and the first electromagnetic proportional valve is closed；Under three sections of operating modes, main valve, the first electromagnetic proportional valve and the second solenoid-operated proportional
Valve is opened, it is characterised in that: is sensed in the exhaust ports installation of gas heater for acquiring the wind pressure of extraneous wind pressure data
Device, wind pressure sensor are connect with master board, and the master board carries out Combustion System as follows:
Step 1: in the standby state, after the outlet valve of gas heater is opened, whether detection flow of inlet water is greater than setting threshold
Value, if so, executing step 2, if not being, return step one；
Step 2: blower executes step 3 after running the first setting time according to preset preceding cleaning wind speed；
Step 3: blower is run according to preset igniting wind speed, step 4 is then executed；
Step 4: main valve open, the first electromagnetic proportional valve are opened, the second electromagnetic proportional valve is closed, igniter opens igniting, then
Execute step 5；
Step 5: judging whether to light a fire successfully, if it is successful, executing one section of operating mode, make burner, blower according to one section of work
Combustion parameter work under operation mode, then executes step 6, such as unsuccessful, exports fault-signal；
Step 6: calculating currently practical combustion power, judge whether currently practical combustion power is less than ignition power, such as
It is to execute step 7, if not being, executes step 8；
Step 7: judging whether wind pressure sensor detects extraneous wind pressure data, if so, improving rotation speed of fan, if not being, continue
One section of operating mode is executed, so that burner, blower is worked according to the combustion parameter under one section of operating mode, then executes step
Eight；
Step 8: judging whether to need switching working mode, if not being to continue to execute one section of operating mode, make burner, blower
According to the combustion parameter work under one section of operating mode, burning thermostatic control logic is then executed；If so, blower is according to preset
Wind speed of lighting a fire is run, and then executes step 9；
Step 9: calculating currently practical combustion power, judge whether currently practical combustion power is less than operating mode institute after switching
The combustion power needed executes burning thermostatic control logic if not being；If so, returning to step seven；
The burning thermostatic control logic includes the following steps:
Step 1 executes one section of operating mode, so that burner, blower is worked according to the combustion parameter under one section of operating mode, then
Judge whether to need to be switched to three sections of operating modes, if so, opening the second electromagnetic proportional valve, makes burner, blower according to three sections
Combustion parameter work under operating mode, then executes step 6；If not being to judge whether to need to be switched to two sections of operating modes,
If not being, return step 1, if so, executing step 2；
Step 2, blower are run according to preset igniting wind speed, are opened the second electromagnetic proportional valve, are made burner, blower according to three sections
Combustion parameter work 300ms~800ms under operating mode, then executes step 3；
Step 3, the second electromagnetic proportional valve continue to be kept open, close the first electromagnetic proportional valve, make burner, blower according to
Combustion parameter work under two sections of operating modes, then executes step 4；
Step 4 judges whether to need to be switched to three sections of operating modes, if so, the first electromagnetic proportional valve of opening, makes burner, wind
Machine works according to the combustion parameter under three sections of operating modes, then executes step 6；If not being to judge whether to need to be switched to one
Section operating mode, if not being, return step 3, if so, executing step 5；
Step 5, blower are run according to preset igniting wind speed, are opened the first electromagnetic proportional valve, are made burner, blower according to three sections
Combustion parameter work 300ms~800ms under operating mode, then returns to step 1；
Step 6 judges whether to need to be switched to one section of operating mode, if so, 1 is returned to step, if not being to judge whether to need
Be switched to two sections of operating modes, if so, execute step 3, if not being, opening the second electromagnetic proportional valve, make burner, blower by
According to the combustion parameter work under three sections of operating modes, step 6 is then executed.
2. method for controlling combustion according to claim 1, it is characterised in that: the currently practical combustion power=(current
Set temperature-inflow temperature) the current water flow of *；Combustion power needed for ignition power and three kinds of operating modes is normal
Setting parameter.
3. method for controlling combustion according to claim 1, it is characterised in that: when wind pressure sensor detects extraneous wind pressure number
It is linear between the size of numerical value and extraneous wind pressure data that rotation speed of fan improves according to rear.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710059607.0A CN107339809B (en) | 2017-01-24 | 2017-01-24 | A kind of method for controlling combustion of gas heater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710059607.0A CN107339809B (en) | 2017-01-24 | 2017-01-24 | A kind of method for controlling combustion of gas heater |
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| CN107339809A CN107339809A (en) | 2017-11-10 |
| CN107339809B true CN107339809B (en) | 2019-09-20 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112178939B (en) * | 2019-07-05 | 2022-03-01 | 芜湖美的厨卫电器制造有限公司 | Water heating method and device |
| CN110332717B (en) * | 2019-07-19 | 2021-04-06 | 珠海格力电器股份有限公司 | Combustion control method and device for water heater, water heater and storage medium |
| CN110953723B (en) * | 2019-10-30 | 2021-06-01 | 九阳股份有限公司 | Control method of gas water heater |
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| CN103672951A (en) * | 2012-08-31 | 2014-03-26 | 林光湧 | Safe combustion monitoring method and system |
| CN103900103A (en) * | 2014-04-16 | 2014-07-02 | 上海禾森机电有限公司 | Blowing-type burner control method |
| CN105757994A (en) * | 2016-01-18 | 2016-07-13 | 广东万家乐燃气具有限公司 | Gas water heater self-adaption wind pressure resisting control method and system |
| CN106016755A (en) * | 2016-05-10 | 2016-10-12 | 广东超人节能厨卫电器有限公司 | Time sequence control method for quick starting of direct-current strong suction gas water heater |
| CN205825449U (en) * | 2016-07-05 | 2016-12-21 | 樱花卫厨（中国）股份有限公司 | Gas heater with intelligence air pressure system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6101180B2 (en) * | 2013-09-19 | 2017-03-22 | リンナイ株式会社 | Water heater |
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2017
- 2017-01-24 CN CN201710059607.0A patent/CN107339809B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672951A (en) * | 2012-08-31 | 2014-03-26 | 林光湧 | Safe combustion monitoring method and system |
| CN103900103A (en) * | 2014-04-16 | 2014-07-02 | 上海禾森机电有限公司 | Blowing-type burner control method |
| CN105757994A (en) * | 2016-01-18 | 2016-07-13 | 广东万家乐燃气具有限公司 | Gas water heater self-adaption wind pressure resisting control method and system |
| CN106016755A (en) * | 2016-05-10 | 2016-10-12 | 广东超人节能厨卫电器有限公司 | Time sequence control method for quick starting of direct-current strong suction gas water heater |
| CN205825449U (en) * | 2016-07-05 | 2016-12-21 | 樱花卫厨（中国）股份有限公司 | Gas heater with intelligence air pressure system |
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