CN109028594A - Gas-heating water heater air/fuel ratio control method, device and gas-heating water heater - Google Patents
Gas-heating water heater air/fuel ratio control method, device and gas-heating water heater Download PDFInfo
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- CN109028594A CN109028594A CN201810556493.5A CN201810556493A CN109028594A CN 109028594 A CN109028594 A CN 109028594A CN 201810556493 A CN201810556493 A CN 201810556493A CN 109028594 A CN109028594 A CN 109028594A
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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
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Abstract
The present invention relates to a kind of gas-heating water heater air/fuel ratio control method, device and gas-heating water heaters.This method comprises the following steps: S100: the load of master controller acquisition gas-heating water heater；S200: master controller indicates that fan control module control adjustable speed fan is worked with preset rotation speed according to the load of gas-heating water heater, and master controller indicates that proportional valve control module control gas ratio valve is worked with predetermined current according to the load of gas-heating water heater；S300a: master controller indicates the practical wind pressure that wind pressure feedback module detection adjustable speed fan generates；S400: master controller by practical wind pressure with and the corresponding default wind pressure of default wind speed be compared, if practical wind pressure and default wind pressure mismatch, then master controller instruction fan control module control adjustable speed fan is worked with setting speed so that practical wind pressure is matched with default wind pressure, can effectively maintenance uses the gas-heating water heater of adjustable speed fan to run under preferable operating condition in the changeable external environment of high pressure.
Description
Technical field
The present invention relates to gas-heating water heater technical fields, more particularly to a kind of gas-heating water heater air-fuel ratio control
Method, apparatus processed and gas-heating water heater.
Background technique
As gas-heating water heater enters into huge numbers of families, using AC single phase asynchronous blower air draft the problem of is gradually convex
It is existing.The exhaust smoke structure of most of gas-heating water heater is simple, and the asynchronous blower of AC single phase used is fixed rotating speed
, remain constant wind speed air draft.In actual use, the combustion gas for being mounted in the changeable external environment of high pressure
Water heater for heating is difficult to adapt to severe use environment using the asynchronous blower of AC single phase of original unadjustable revolving speed, is easy
Flue blockage occurs, generates a large amount of exhaust gas recirculation, or even cause flame excessive, the adaptability of product is bad.
In contrast, preferable using adaptability of the gas-heating water heater of adjustable speed fan to environment.So, how in height
It presses and maintains that run under preferable operating condition using the gas-heating water heater of adjustable speed fan be urgently to solve in changeable external environment
Certainly the problem of.
Summary of the invention
Based on this, first technical problem solved by the invention is to provide for a kind of gas-heating water heater air-fuel ratio control
Method, apparatus processed can effectively maintain the gas-heating water heater for using adjustable speed fan in the changeable external environment of high pressure
It is run under preferable operating condition.
Second technical problem solved by the invention is to provide for a kind of gas-heating water heater, can be changeable in high pressure
External environment in run under preferable operating condition.
Above-mentioned first technical problem is solved by the following technical programs:
A kind of gas-heating water heater air/fuel ratio control method, includes the following steps:
S100: the load of master controller acquisition gas-heating water heater；
S200: master controller indicates fan control module control adjustable speed fan with pre- according to the load of gas-heating water heater
If rotary speed working, master controller according to the load of gas-heating water heater indicate proportional valve control module control gas ratio valve with
Predetermined current work；
S300a: master controller indicates the practical wind pressure that wind pressure feedback module detection adjustable speed fan generates；
S400: master controller by practical wind pressure with and the corresponding default wind pressure of default wind speed be compared, if practical wind pressure
It is mismatched with default wind pressure, then master controller instruction fan control module control adjustable speed fan is worked with setting speed so that practical
Wind pressure is matched with default wind pressure.
Gas-heating water heater air/fuel ratio control method of the present invention, it is generated beneficial to effect compared with the background art
Fruit: in actual use, master controller indicates fan control module and proportioning valve according to the load of gas-heating water heater
Control module is controlled adjustable speed fan respectively and is worked with preset rotation speed work and control gas ratio valve with predetermined current.Wind pressure it is big
It is small to be determined by the speed of revolving speed, if practical wind pressure is influenced excessive, wind pressure feedback module detection speed-regulating wind by external environment
Machine generate practical wind pressure can be mismatched with default wind pressure, at this time master controller instruction fan control module control adjustable speed fan with
Setting speed work, so that practical wind pressure is matched with default wind pressure, so that air-fuel ratio is maintained OK range.It can so mention
High gas-heating water heater guarantees the gas-heating water heater thermal efficiency with higher to the adaptability of environment.
The gas-heating water heater air/fuel ratio control method further includes after S400 in one of the embodiments,
Following steps:
S500a1: master controller indicates the actual speed of speed feedback module detection adjustable speed fan；
S500a2: actual speed is compared master controller with setting speed, if actual speed and setting speed are not
Match, then master controller instruction alarm mechanism issues prompt.
Under the abnormal conditions such as adjustable speed fan damage or aging, master controller indicates fan control module control speed regulation
Adjustable speed fan may be unable to reach corresponding setting speed when blower is worked with setting speed, and speed feedback module is utilized to detect
The actual speed of adjustable speed fan simultaneously compares actual speed and setting speed by master controller, if actual speed and setting speed are not
Matching, then alarm mechanism issues prompt, can play the purpose for reminding user in this way, avoid continuing to use gas-heating water heater
Lead to flue blockage, improves the service life of gas-heating water heater.
The gas-heating water heater air/fuel ratio control method further includes after S400 in one of the embodiments,
Following steps:
S500b1: master controller indicates the practical wind pressure that wind pressure feedback module detection adjustable speed fan generates；
S500b2: practical wind pressure is compared master controller with default wind pressure, if practical wind pressure and default wind pressure are not
Match, then master controller instruction alarm mechanism issues prompt.
Adjustable speed fan with limit speed work etc. in special circumstances, practical wind pressure still possibly can not generate default wind
Pressure, and using the practical wind pressure of wind pressure feedback module detection adjustable speed fan generation and by the practical wind pressure of master controller comparison and in advance
If wind pressure, if practical wind pressure and default wind pressure mismatch, alarm mechanism issues prompt, can play the mesh for reminding user in this way
, avoiding continuing to use gas-heating water heater leads to flue blockage, improves the service life of gas-heating water heater.
The gas-heating water heater air/fuel ratio control method further includes after S200 in one of the embodiments,
Following steps:
S300b1: master controller indicates the actual speed of speed feedback module detection adjustable speed fan；
S300b2: actual speed is limited revolving speed with maximum and is compared by master controller, if actual speed is greater than speed-regulating wind
The maximum revolving speed that limits of machine continues preset time, then master controller instruction gas-heating water heater closing organ work.
When master controller instruction fan control module control adjustable speed fan is worked with setting speed, speed feedback mould is utilized
Block detects the actual speed of adjustable speed fan and compares actual speed and maximum restriction revolving speed by master controller, if actual speed is big
Continue preset time in the maximum revolving speed that limits of adjustable speed fan, then master controller indicates gas-heating water heater closing organ work
Make.It can so prevent gas-heating water heater from working overloadingly, advantageously ensure that the job security of gas-heating water heater.
The gas-heating water heater air/fuel ratio control method further includes before S100 in one of the embodiments,
Following steps:
S10: master controller indicates fan control module control adjustable speed fan to test rotary speed working；
S20: master controller indicates the practical wind pressure that wind pressure feedback module detection adjustable speed fan generates；
S30: practical wind pressure is compared master controller with test wind pressure, if practical wind pressure and test wind pressure mismatch,
Then master controller instruction alarm mechanism issues prompt.
Under the abnormal conditions such as adjustable speed fan damage or aging, master controller indicates fan control module control speed regulation
Adjustable speed fan possibly can not generate test wind pressure when blower is to test rotary speed working, and wind pressure feedback module is utilized to detect speed-regulating wind
The practical wind pressure that machine generates simultaneously compares practical wind pressure and test wind pressure by master controller, if practical wind pressure with do not test wind pressure not
Match, then alarm mechanism issues prompt, can play the purpose for reminding user in this way, avoids continuing to use gas-heating water heater and lead
Flue blockage is caused, the service life of gas-heating water heater is improved.
A kind of gas-heating water heater air-fuel ratio control device, including master controller, fan control module, proportional valve control
Module and wind pressure feedback module, the fan control module, proportional valve control module, wind pressure feedback module respectively with the master control
Device processed is electrically connected；
The master controller is used to obtain the load of gas-heating water heater, and the master controller is also used to be adopted according to combustion gas
The load instruction fan control module control adjustable speed fan of warm water heater is worked with preset rotation speed, and the master controller is also used to root
It is worked according to the load instruction proportional valve control module control gas ratio valve of gas-heating water heater with predetermined current；
The master controller is also used to indicate the practical wind pressure that the wind pressure feedback module detection adjustable speed fan generates；
The master controller be also used to by practical wind pressure with and the corresponding default wind pressure of default wind speed be compared, if practical
Wind pressure and default wind pressure mismatch, then the master controller instruction fan control module control adjustable speed fan is worked with setting speed
So that practical wind pressure is matched with default wind pressure.
Gas-heating water heater air-fuel ratio control device of the present invention, it is generated beneficial to effect compared with the background art
Fruit: in actual use, master controller indicates fan control module and proportioning valve according to the load of gas-heating water heater
Control module is controlled adjustable speed fan respectively and is worked with preset rotation speed work and control gas ratio valve with predetermined current.Wind pressure it is big
It is small to be determined by the speed of revolving speed, if practical wind pressure is influenced excessive, wind pressure feedback module detection speed-regulating wind by external environment
Machine generate practical wind pressure can be mismatched with default wind pressure, at this time master controller instruction fan control module control adjustable speed fan with
Setting speed work, so that practical wind pressure is matched with default wind pressure, so that air-fuel ratio is maintained OK range.It can so mention
High gas-heating water heater guarantees the gas-heating water heater thermal efficiency with higher to the adaptability of environment.
The gas-heating water heater air-fuel ratio control device further includes speed feedback module in one of the embodiments,
And alarm mechanism, the speed feedback module, alarm mechanism are electrically connected with the master controller respectively；
The master controller is also used to indicate the actual speed of the speed feedback module detection adjustable speed fan；
The master controller is also used to for actual speed being compared with setting speed, if actual speed and setting speed are not
Matching, then the master controller instruction alarm mechanism issues prompt.
Under the abnormal conditions such as adjustable speed fan damage or aging, master controller indicates fan control module control speed regulation
Adjustable speed fan may be unable to reach corresponding setting speed when blower is worked with setting speed, and speed feedback module is utilized to detect
The actual speed of adjustable speed fan simultaneously compares actual speed and setting speed by master controller, if actual speed and setting speed are not
Matching, then alarm mechanism issues prompt, can play the purpose for reminding user in this way, avoid continuing to use gas-heating water heater
Lead to flue blockage, improves the service life of gas-heating water heater.
The gas-heating water heater air-fuel ratio control device further includes alarm mechanism in one of the embodiments, institute
It states alarm mechanism and the master controller is electrically connected；
The master controller is also used to for practical wind pressure being compared with default wind pressure, if practical wind pressure and default wind pressure are not
Matching, then the master controller instruction alarm mechanism issues prompt.
Adjustable speed fan with limit speed work etc. in special circumstances, practical wind pressure still possibly can not generate default wind
Pressure, and using the practical wind pressure of wind pressure feedback module detection adjustable speed fan generation and by the practical wind pressure of master controller comparison and in advance
If wind pressure, if practical wind pressure and default wind pressure mismatch, alarm mechanism issues prompt, can play the mesh for reminding user in this way
, avoiding continuing to use gas-heating water heater leads to flue blockage, improves the service life of gas-heating water heater.
The gas-heating water heater air-fuel ratio control device further includes speed feedback module in one of the embodiments,
And gas-heating water heater closing organ, the speed feedback module, gas-heating water heater closing organ respectively with the master
Controller is electrically connected；
The master controller is also used to indicate the actual speed of the speed feedback module detection adjustable speed fan；
The master controller is also used to actual speed limiting revolving speed with maximum and be compared, if actual speed is greater than speed regulation
The maximum revolving speed that limits of blower continues preset time, then master controller instruction gas-heating water heater closing organ work.
When master controller instruction fan control module control adjustable speed fan is worked with setting speed, speed feedback mould is utilized
Block detects the actual speed of adjustable speed fan and compares actual speed and maximum restriction revolving speed by master controller, if actual speed is big
Continue preset time in the maximum revolving speed that limits of adjustable speed fan, then master controller indicates gas-heating water heater closing organ work
Make.It can so prevent gas-heating water heater from working overloadingly, advantageously ensure that the job security of gas-heating water heater.
The gas-heating water heater air-fuel ratio control device further includes alarm mechanism in one of the embodiments, institute
It states alarm mechanism and the master controller is electrically connected；
The master controller is also used to indicate fan control module control adjustable speed fan to test rotary speed working；
The master controller is also used to for practical wind pressure being compared with test wind pressure, if practical wind pressure and test wind pressure are not
Matching, then the master controller instruction alarm mechanism issues prompt.
Under the abnormal conditions such as adjustable speed fan damage or aging, master controller indicates fan control module control speed regulation
Adjustable speed fan possibly can not generate test wind pressure when blower is to test rotary speed working, and wind pressure feedback module is utilized to detect speed-regulating wind
The practical wind pressure that machine generates simultaneously compares practical wind pressure and test wind pressure by master controller, if practical wind pressure with do not test wind pressure not
Match, then alarm mechanism issues prompt, can play the purpose for reminding user in this way, avoids continuing to use gas-heating water heater and lead
Flue blockage is caused, the service life of gas-heating water heater is improved.
The wind pressure feedback module includes wind pressure sensor in one of the embodiments, the wind pressure sensor and institute
Master controller electric connection is stated, to detect the practical wind pressure of adjustable speed fan generation.
The alarm mechanism includes sound module and display module in one of the embodiments, and the sound module is shown
Show that module is electrically connected with the master controller respectively, the sound module is used for issuing alarm the tinkle of bells, the display module
In display fault code, prompt effect good.
Above-mentioned second technical problem is solved by the following technical programs:
A kind of gas-heating water heater, including adjustable speed fan, gas ratio valve and above-mentioned gas-heating water heater air-fuel ratio
Control device, the adjustable speed fan and the fan control module are electrically connected, the gas ratio valve and the Proportional Valve-controlled
Molding block is electrically connected.
Gas-heating water heater of the present invention, it is generated the utility model has the advantages that actually using compared with the background art
In the process, master controller indicates that fan control module and proportional valve control module are controlled respectively according to the load of gas-heating water heater
Adjustable speed fan processed is worked and is controlled gas ratio valve with preset rotation speed and worked with predetermined current.The size of wind pressure by revolving speed speed
It determines, if practical wind pressure is influenced the practical wind excessive, wind pressure feedback module detection adjustable speed fan generates by external environment
Pressure can be mismatched with default wind pressure, and the fan control module control adjustable speed fan of master controller instruction at this time is worked with setting speed,
So that practical wind pressure is matched with default wind pressure, so that air-fuel ratio is maintained OK range.It so can be improved and environment fitted
Ying Xing, and then guarantee the thermal efficiency with higher.
The gas-heating water heater further includes Switching Power Supply in one of the embodiments, and the adjustable speed fan passes through
The Switching Power Supply connects external power supply, is easy to use.
Detailed description of the invention
Fig. 1 is the flow diagram of gas-heating water heater air/fuel ratio control method described in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of gas-heating water heater air-fuel ratio control device described in the embodiment of the present invention.
Description of symbols:
10, master controller, 20, fan control module, 30, adjustable speed fan, 40, proportional valve control module, 50, gas proportion
Valve, 60, wind pressure feedback module, 70, speed feedback module, 80, alarm mechanism, 90, gas-heating water heater closing organ.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give better embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose of providing these embodiments is that making to understand more the disclosure
Add thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.On the contrary, when element is referred to as " directly existing " another element "upper",
There is no intermediary elements.Term as used herein "vertical", "horizontal", "left" and "right" and similar statement are
For illustrative purposes, it is not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more
Any and all combinations of relevant listed item.
As shown in connection with fig. 1, gas-heating water heater air/fuel ratio control method described in the present embodiment, includes the following steps:
S10: master controller 10 indicates that fan control module 20 controls adjustable speed fan 30 to test rotary speed working.
S20: master controller 10 indicates that wind pressure feedback module 60 detects the practical wind pressure that adjustable speed fan 30 generates.
S30: practical wind pressure is compared master controller 10 with test wind pressure, if practical wind pressure with do not test wind pressure not
Match, then master controller 10 indicates that alarm mechanism 80 issues prompt.Meanwhile if practical wind pressure and test wind pressure mismatch, main control
Device 10 can also indicate that gas-heating water heater closing organ 90 works.If practical wind pressure is matched with test wind pressure, S100 is executed.
It is main caused by S10, S20, S30 the utility model has the advantages that under the abnormal conditions such as the damage of adjustable speed fan 30 or aging
Controller 10 indicates that adjustable speed fan 30 possibly can not produce when fan control module 20 controls adjustable speed fan 30 to test rotary speed working
Raw test wind pressure, and detect the practical wind pressure of the generation of adjustable speed fan 30 using wind pressure feedback module 60 and compared by master controller 10
To practical wind pressure and test wind pressure, if practical wind pressure and test wind pressure mismatch, alarm mechanism 80, which issues, to be prompted, in this way can be with
The purpose for reminding user is played, avoiding continuing to use gas-heating water heater leads to flue blockage, improves gas-heating water heater
Service life.Meanwhile master controller 10 indicates that gas-heating water heater closing organ 90 works, and can so prevent combustion gas from adopting
Warm water heater works in abnormal cases, advantageously ensures that the job security of gas-heating water heater.
S100: the load of the acquisition gas-heating water heater of master controller 10.
S200: master controller 10 indicates that fan control module 20 controls adjustable speed fan according to the load of gas-heating water heater
30 are worked with preset rotation speed, and master controller 10 indicates the control combustion of proportional valve control module 40 according to the load of gas-heating water heater
Gas proportioning valve 50 is worked with predetermined current.
S300b1: master controller 10 indicates that speed feedback module 70 detects the actual speed of adjustable speed fan 30.
S300b2: actual speed is limited revolving speed with maximum and is compared by master controller 10, if actual speed is greater than speed regulation
The maximum revolving speed that limits of blower 30 continues preset time, then master controller 10 indicates 90 work of gas-heating water heater closing organ
Make.Meanwhile if the maximum revolving speed that limits that actual speed is greater than adjustable speed fan 30 continues preset time, master controller 10 can also be indicated
Alarm mechanism 80 issues prompt.If actual speed, which is less than the maximum of adjustable speed fan 30, limits revolving speed, S300b is re-executed1。
S300b1、S300b2It is generated the utility model has the advantages that master controller 10 indicate fan control module 20 control speed-regulating wind
When machine 30 is worked with setting speed, the actual speed of adjustable speed fan 30 is detected using speed feedback module 70 and passes through master controller
10, which compare actual speed, limits revolving speed with maximum, if the maximum restriction revolving speed that actual speed is greater than adjustable speed fan 30 is persistently preset
Between, then master controller 10 indicates that gas-heating water heater closing organ 90 works.It can so prevent gas-heating water heater super
Load operation advantageously ensures that the job security of gas-heating water heater.Meanwhile master controller 10 indicates that alarm mechanism 80 is sent out
It prompts out, the purpose for reminding user can be played in this way, avoiding continuing to use gas-heating water heater causes to damage, and improves combustion gas
The service life of water heater for heating.
S300a: master controller 10 indicates that wind pressure feedback module 60 detects the practical wind pressure that adjustable speed fan 30 generates.
S400: master controller 10 by practical wind pressure with and the corresponding default wind pressure of default wind speed be compared, if practical wind
Pressure is mismatched with default wind pressure, then master controller 10 indicates that fan control module 20 is controlled adjustable speed fan 30 and worked with setting speed
So that practical wind pressure is matched with default wind pressure.If practical wind pressure is matched with default wind pressure, S100 is re-executed.
S500a1: master controller 10 indicates that speed feedback module 70 detects the actual speed of adjustable speed fan 30.
S500a2: actual speed is compared master controller 10 with setting speed, if actual speed and setting speed are not
Matching, then master controller 10 indicates that alarm mechanism 80 issues prompt.Meanwhile if actual speed and setting speed mismatch, master control
Device 10 processed can also indicate that gas-heating water heater closing organ 90 works.If actual speed is matched with setting speed, hold again
Row S100.
S500a1、S500a2It is generated the utility model has the advantages that under the damage of adjustable speed fan 30 or the abnormal conditions such as aging,
Adjustable speed fan 30 is possibly when the instruction control adjustable speed fan 30 of fan control module 20 of master controller 10 is worked with setting speed can not
Reach corresponding setting speed, and detects the actual speed of adjustable speed fan 30 using speed feedback module 70 and pass through master controller
10 compare actual speed and setting speed, if actual speed and setting speed mismatch, alarm mechanism 80 issues prompt, in this way
The purpose for reminding user can be played, avoiding continuing to use gas-heating water heater leads to flue blockage, improves gas-heating heat
The service life of water furnace.Meanwhile master controller 10 indicates that gas-heating water heater closing organ 90 works, and can so prevent from firing
Gas water heater for heating works in abnormal cases, advantageously ensures that the job security of gas-heating water heater.
S500b1: master controller 10 indicates that wind pressure feedback module 60 detects the practical wind pressure that adjustable speed fan 30 generates.
S500b2: practical wind pressure is compared master controller 10 with default wind pressure, if practical wind pressure and default wind pressure are not
Matching, then master controller 10 indicates that alarm mechanism 80 issues prompt.Meanwhile if practical wind pressure and default wind pressure mismatch, master control
Device 10 processed can also indicate that gas-heating water heater closing organ 90 works.If practical wind pressure is matched with default wind pressure, hold again
Row S100.
S500b1、S500b2It is generated the utility model has the advantages that adjustable speed fan 30 with limit speed work etc. special circumstances
Under, practical wind pressure possibly can not still generate default wind pressure, and wind pressure feedback module 60 is utilized to detect the reality that adjustable speed fan 30 generates
Border wind pressure simultaneously compares practical wind pressure and default wind pressure by master controller 10, if practical wind pressure and default wind pressure mismatch, reports
Alert mechanism 80 issues prompt, can play the purpose for reminding user in this way, and avoiding continuing to use gas-heating water heater leads to cigarette
Road blocking, improves the service life of gas-heating water heater.Meanwhile master controller 10 indicates gas-heating water heater closing organ
90 work, can so prevent gas-heating water heater from working in abnormal cases, advantageously ensure that gas-heating water heater
Job security.
In the present embodiment, for S500a1、S500a2With S500b1、S500b2If actual speed and setting speed
Match, and practical wind pressure is matched with default wind pressure, then re-executes S100.If actual speed and setting speed mismatch, or practical
Wind pressure and default wind pressure mismatch, then master controller 10 indicates that alarm mechanism 80 issues prompt, and master controller 10 indicates that combustion gas is adopted
Warm water heater closing organ 90 works.
It should be noted that test revolving speed, test wind pressure, preset rotation speed, predetermined current, maximum restriction revolving speed and default wind
The parameters such as pressure, which can be preset, to be stored in master controller 10.For the load of different gas-heating water heaters, it is set with
One-to-one preset rotation speed, predetermined current and default wind pressure therewith, and setting speed is then according to practical wind pressure and default wind
The comparison result of pressure is calculated, to realize the compensation of practical wind pressure.As for judge practical wind pressure and default wind pressure whether
Match, can be realized by judging whether practical wind pressure deviates default wind pressure a certain range, can also by judge practical wind pressure and
The whether equal realization of default wind pressure, judgment mode can select according to actual needs, herein with no restriction.Similarly, judge reality
Whether border revolving speed matches with setting speed, judges whether practical wind pressure matches with default wind pressure, judges practical wind pressure and test wind
Whether pressure matches, and can equally use the above judgment mode, details are not described herein again.
It should be noted S300a, S400 and S300b1、S300b2Between do not have sequencing point, it can first
S300a, S400 are executed, executes S300b afterwards1、S300b2, S300b can also be first carried out1、S300b2, S300a, S400 are executed afterwards,
It may also be performed simultaneously S300a, S400 and S300b1、S300b2。
It should be noted S500a1、S500a2With S500b1、S500b2Between do not have sequencing point, it can
First carry out S500a1、S500a2, S500b is executed afterwards1、S500b2, S500b can also be first carried out1、S500b2, S500a is executed afterwards1、
S500a2, may also be performed simultaneously S500a1、S500a2With S500b1、S500b2。
Gas-heating water heater air/fuel ratio control method described in the present embodiment is generated beneficial compared with the background art
Effect: in actual use, master controller 10 indicates 20 He of fan control module according to the load of gas-heating water heater
Proportional valve control module 40 controls adjustable speed fan 30 respectively and is worked and controlled gas ratio valve 50 with preset rotation speed with predetermined current
Work.The size of wind pressure is determined by the speed of revolving speed, if practical wind pressure is influenced excessive, wind pressure feedback mould by external environment
Block 60 detects the practical wind pressure that adjustable speed fan 30 generates and can mismatch with default wind pressure, and master controller 10 indicates air-blower control at this time
Module 20 is controlled adjustable speed fan 30 and is worked with setting speed, so that practical wind pressure is matched with default wind pressure, so that air-fuel ratio be tieed up
It holds in OK range.Gas-heating water heater so be can be improved to the adaptability of environment, and then guarantee gas-heating water heater
The thermal efficiency with higher.
As shown in connection with fig. 2, gas-heating water heater air-fuel ratio control device described in the present embodiment, including master controller
10, fan control module 20, proportional valve control module 40 and wind pressure feedback module 60, the fan control module 20, proportioning valve
Control module 40, wind pressure feedback module 60 are electrically connected with the master controller 10 respectively；
The master controller 10 is used to obtain the load of gas-heating water heater, and the master controller 10 is also used to according to combustion
The load instruction fan control module 20 of gas water heater for heating is controlled adjustable speed fan 30 and is worked with preset rotation speed, the master controller
10 are also used to indicate that proportional valve control module 40 controls gas ratio valve 50 with default electricity according to the load of gas-heating water heater
Flow work；
The master controller 10 is also used to indicate that the wind pressure feedback module 60 detects the practical wind that adjustable speed fan 30 generates
Pressure；
The master controller 10 be also used to by practical wind pressure with and the corresponding default wind pressure of default wind speed be compared, if real
Border wind pressure and default wind pressure mismatch, then the master controller 10 indicates that fan control module 20 controls adjustable speed fan 30 to set
Rotary speed working is so that practical wind pressure is matched with default wind pressure.
Gas-heating water heater air-fuel ratio control device described in the present embodiment is generated beneficial compared with the background art
Effect: in actual use, master controller 10 indicates 20 He of fan control module according to the load of gas-heating water heater
Proportional valve control module 40 controls adjustable speed fan 30 respectively and is worked and controlled gas ratio valve 50 with preset rotation speed with predetermined current
Work.The size of wind pressure is determined by the speed of revolving speed, if practical wind pressure is influenced excessive, wind pressure feedback mould by external environment
Block 60 detects the practical wind pressure that adjustable speed fan 30 generates and can mismatch with default wind pressure, and master controller 10 indicates air-blower control at this time
Module 20 is controlled adjustable speed fan 30 and is worked with setting speed, so that practical wind pressure is matched with default wind pressure, so that air-fuel ratio be tieed up
It holds in OK range.Gas-heating water heater so be can be improved to the adaptability of environment, and then guarantee gas-heating water heater
The thermal efficiency with higher.
In the present embodiment, the gas-heating water heater air-fuel ratio control device further includes speed feedback module 70 and report
Alert mechanism 80, the speed feedback module 70, alarm mechanism 80 are electrically connected with the master controller 10 respectively；
The master controller 10 is also used to indicate that the speed feedback module 70 detects the actual speed of adjustable speed fan 30；
The master controller 10 is also used to for actual speed being compared with setting speed, if actual speed and setting speed
It mismatches, then the master controller 10 indicates that alarm mechanism 80 issues prompt.
Under the abnormal conditions such as the damage of adjustable speed fan 30 or aging, master controller 10 indicates that fan control module 20 is controlled
Adjustable speed fan 30 may be unable to reach corresponding setting speed when adjustable speed fan 30 processed is worked with setting speed, and utilize revolving speed anti-
It presents module 70 to detect the actual speed of adjustable speed fan 30 and compare actual speed and setting speed by master controller 10, if practical
Revolving speed and setting speed mismatch, then alarm mechanism 80 issues prompt, can play the purpose for reminding user in this way, avoid continuing
Lead to flue blockage using gas-heating water heater, improves the service life of gas-heating water heater.
In the present embodiment, the master controller 10 is also used to for practical wind pressure being compared with default wind pressure, if practical
Wind pressure and default wind pressure mismatch, then the master controller 10 indicates that alarm mechanism 80 issues prompt.
Adjustable speed fan 30 with limit speed work etc. in special circumstances, practical wind pressure still possibly can not generate it is default
Wind pressure, and detect the practical wind pressure of the generation of adjustable speed fan 30 using wind pressure feedback module 60 and reality is compared by master controller 10
Wind pressure and default wind pressure, if practical wind pressure and default wind pressure mismatch, alarm mechanism 80 issues prompt, can play mention in this way
It wakes up the purpose of user, avoiding continuing to use gas-heating water heater leads to flue blockage, improves the use of gas-heating water heater
Service life.
In the present embodiment, the gas-heating water heater air-fuel ratio control device further includes that gas-heating water heater is closed
Mechanism 90, the gas-heating water heater closing organ 90 are electrically connected with the master controller 10；
The master controller 10 is also used to actual speed limiting revolving speed with maximum and be compared, and adjusts if actual speed is greater than
The maximum revolving speed that limits of fast blower 30 continues preset time, then master controller 10 indicates 90 work of gas-heating water heater closing organ
Make.
When master controller 10 indicates that the control adjustable speed fan 30 of fan control module 20 is worked with setting speed, revolving speed is utilized
Feedback module 70, which detects the actual speed of adjustable speed fan 30 and compares actual speed by master controller 10, limits revolving speed with maximum,
If the maximum revolving speed that limits that actual speed is greater than adjustable speed fan 30 continues preset time, master controller 10 indicates gas-heating heat
Water furnace closing organ 90 works.It can so prevent gas-heating water heater from working overloadingly, advantageously ensure that gas-heating heat
The job security of water furnace.
In the present embodiment, the master controller 10 is also used to indicate that fan control module 20 controls adjustable speed fan 30 to survey
Try rotary speed working；
The master controller 10 is also used to for practical wind pressure being compared with test wind pressure, if practical wind pressure and test wind pressure
It mismatches, then the master controller 10 indicates that alarm mechanism 80 issues prompt.
Under the abnormal conditions such as the damage of adjustable speed fan 30 or aging, master controller 10 indicates that fan control module 20 is controlled
Adjustable speed fan 30 possibly can not generate test wind pressure when adjustable speed fan processed 30 is to test rotary speed working, and utilize wind pressure feedback module
The practical wind pressure of the 60 detection generations of adjustable speed fans 30 simultaneously compares practical wind pressure and test wind pressure by master controller 10, if practical wind
Pressure is mismatched with test wind pressure, then alarm mechanism 80 issues prompt, can be played the purpose for reminding user in this way, be avoided continuing to make
Lead to flue blockage with gas-heating water heater, improves the service life of gas-heating water heater.
Specifically, fan control module 20 realizes the control of adjustable speed fan 30, ratio in the form of draught fan control circuit
Valve control module 40 realizes the control of gas ratio valve 50 in the form of Proportion valve controlling circuit, and wind pressure feedback module 60 uses
The form of wind pressure feed circuit realizes the detection for the practical wind pressure that adjustable speed fan 30 generates, and speed feedback module 70 is anti-using revolving speed
The form of current feed circuit realizes the detection of the actual speed of adjustable speed fan 30.
In the present embodiment, for the load of different gas-heating water heaters, the master controller 10 is by exporting not
Modulation-demodulation signal to the draught fan control circuit with duty ratio controls adjustable speed fan 30 with different preset rotation speed work.Institute
Stating wind pressure feedback module 60 includes wind pressure sensor, and the wind pressure sensor and the master controller 10 are electrically connected, to examine
Survey the practical wind pressure that adjustable speed fan 30 generates.The alarm mechanism 80 include sound module and display module, the sound module,
Display module is electrically connected with the master controller 10 respectively, and the sound module is for issuing alarm the tinkle of bells, the display mould
Block prompts effect good for showing fault code.
Gas-heating water heater described in the present embodiment, including adjustable speed fan 30, gas ratio valve 50 and above-mentioned combustion gas are adopted
Warm water heater air-fuel ratio control device, the adjustable speed fan 30 are electrically connected with the fan control module 20, the combustion gas ratio
Example valve 50 and the proportional valve control module 40 are electrically connected.
Gas-heating water heater described in the present embodiment, it is generated the utility model has the advantages that actually making compared with the background art
With in the process, master controller 10 indicates fan control module 20 and proportional valve control module according to the load of gas-heating water heater
40 control adjustable speed fan 30 respectively is worked with preset rotation speed work and control gas ratio valve 50 with predetermined current.The size of wind pressure
It is determined by the speed of revolving speed, if practical wind pressure is influenced excessive, the detection speed-regulating wind of wind pressure feedback module 60 by external environment
The practical wind pressure that machine 30 generates can be mismatched with default wind pressure, and master controller 10 indicates the control speed regulation of fan control module 20 at this time
Blower 30 is worked with setting speed, so that practical wind pressure is matched with default wind pressure, so that air-fuel ratio is maintained OK range.Such as
This can be improved the adaptability to environment, and then guarantee the thermal efficiency with higher.
In the present embodiment, the gas-heating water heater further includes Switching Power Supply, and the adjustable speed fan 30 passes through described
Switching Power Supply connects external power supply, is easy to use.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of gas-heating water heater air/fuel ratio control method, which comprises the steps of:
S100: the load of master controller (10) acquisition gas-heating water heater；
S200: master controller (10) indicates that fan control module (20) control adjustable speed fan according to the load of gas-heating water heater
(30) it is worked with preset rotation speed, master controller (10) indicates proportional valve control module (40) according to the load of gas-heating water heater
Control gas ratio valve (50) is worked with predetermined current；
S300a: master controller (10) indicates the practical wind pressure that wind pressure feedback module (60) detection adjustable speed fan (30) generates；
S400: master controller (10) by practical wind pressure with and the corresponding default wind pressure of default wind speed be compared, if practical wind pressure
It is mismatched with default wind pressure, then master controller (10) instruction fan control module (20) control adjustable speed fan (30) is with setting speed
Work is so that practical wind pressure is matched with default wind pressure.
2. gas-heating water heater air/fuel ratio control method according to claim 1, which is characterized in that after S400,
It is further comprising the steps of:
S500a1: master controller (10) indicates the actual speed of speed feedback module (70) detection adjustable speed fan (30)；
S500a2: actual speed is compared master controller (10) with setting speed, if actual speed and setting speed are not
Match, then master controller (10) instruction alarm mechanism (80) issues prompt.
3. gas-heating water heater air/fuel ratio control method according to claim 1, which is characterized in that after S400,
It is further comprising the steps of:
S500b1: master controller (10) indicates the practical wind pressure that wind pressure feedback module (60) detection adjustable speed fan (30) generates；
S500b2: practical wind pressure is compared master controller (10) with default wind pressure, if practical wind pressure and default wind pressure are not
Match, then master controller (10) instruction alarm mechanism (80) issues prompt.
4. gas-heating water heater air/fuel ratio control method according to claim 1, which is characterized in that after S200,
It is further comprising the steps of:
S300b1: master controller (10) indicates the actual speed of speed feedback module (70) detection adjustable speed fan (30)；
S300b2: actual speed is limited revolving speed with maximum and is compared by master controller (10), if actual speed is greater than adjustable speed fan
(30) the maximum revolving speed that limits continues preset time, then master controller (10) indicates gas-heating water heater closedown module (90) work
Make.
5. gas-heating water heater air/fuel ratio control method according to claim 1, which is characterized in that before S100,
It is further comprising the steps of:
S10: master controller (10) indicates fan control module (20) control adjustable speed fan (30) to test rotary speed working；
S20: master controller (10) indicates the practical wind pressure that wind pressure feedback module (60) detection adjustable speed fan (30) generates；
S30: practical wind pressure is compared master controller (10) with test wind pressure, if practical wind pressure and test wind pressure mismatch,
Then master controller (10) instruction alarm mechanism (80) issues prompt.
6. a kind of gas-heating water heater air-fuel ratio control device, which is characterized in that including master controller (10), air-blower control mould
Block (20), proportional valve control module (40) and wind pressure feedback module (60), the fan control module (20), Proportional Valve-controlled molding
Block (40), wind pressure feedback module (60) are electrically connected with the master controller (10) respectively；
The master controller (10) is used to obtain the load of gas-heating water heater, and the master controller (10) is also used to according to combustion
Load instruction fan control module (20) control adjustable speed fan (30) of gas water heater for heating is worked with preset rotation speed, the master control
Device (10) processed is also used to indicate proportional valve control module (40) control gas ratio valve according to the load of gas-heating water heater
(50) it is worked with predetermined current；
The master controller (10) is also used to indicate the reality that wind pressure feedback module (60) detection adjustable speed fan (30) generates
Wind pressure；
The master controller (10) be also used to by practical wind pressure with and the corresponding default wind pressure of default wind speed be compared, if practical
Wind pressure and default wind pressure mismatch, then master controller (10) instruction fan control module (20) control adjustable speed fan (30) with
Setting speed works so that practical wind pressure is matched with default wind pressure.
7. gas-heating water heater air-fuel ratio control device according to claim 6, which is characterized in that further include that revolving speed is anti-
Present module (70) and alarm mechanism (80), the speed feedback module (70), alarm mechanism (80) respectively with the master controller
(10) it is electrically connected；
The master controller (10) is also used to indicate the actual speed of speed feedback module (70) detection adjustable speed fan (30)；
The master controller (10) is also used to for actual speed being compared with setting speed, if actual speed and setting speed are not
Matching, then master controller (10) instruction alarm mechanism (80) issues prompt.
8. gas-heating water heater air-fuel ratio control device according to claim 6, which is characterized in that further include alarming machine
Structure (80), the alarm mechanism (80) and the master controller (10) are electrically connected；
The master controller (10) is also used to for practical wind pressure being compared with default wind pressure, if practical wind pressure and default wind pressure are not
Matching, then master controller (10) instruction alarm mechanism (80) issues prompt.
9. gas-heating water heater air-fuel ratio control device according to claim 6, which is characterized in that further include alarming machine
Structure (80), the alarm mechanism (80) and the master controller (10) are electrically connected；
The master controller (10) is also used to indicate fan control module (20) control adjustable speed fan (30) to test rotary speed working；
The master controller (10) is also used to for practical wind pressure being compared with test wind pressure, if practical wind pressure and test wind pressure are not
Matching, then master controller (10) instruction alarm mechanism (80) issues prompt.
10. a kind of gas-heating water heater, which is characterized in that including adjustable speed fan (30), gas ratio valve (50) and such as right
It is required that the described in any item gas-heating water heater air-fuel ratio control devices of 6-9, the adjustable speed fan (30) and the blower control
Molding block (20) is electrically connected, and the gas ratio valve (50) and the proportional valve control module (40) are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810556493.5A CN109028594B (en) | 2018-06-01 | 2018-06-01 | Air-fuel ratio control method and device for gas heating water heater and gas heating water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810556493.5A CN109028594B (en) | 2018-06-01 | 2018-06-01 | Air-fuel ratio control method and device for gas heating water heater and gas heating water heater |
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| CN113028652A (en) * | 2021-04-03 | 2021-06-25 | 中山百得厨卫有限公司 | Water heater control method based on wind pressure sensor and water heater |
| CN113932457A (en) * | 2021-11-23 | 2022-01-14 | 华帝股份有限公司 | Method for automatically matching combustion condition and wind speed of gas water heater |
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| CN116045523A (en) * | 2022-12-29 | 2023-05-02 | 芜湖美的智能厨电制造有限公司 | Control method and device of gas water heater, gas water heater and storage medium |
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