CN102564517A - Gas safe supply detecting and compensating method - Google Patents
Gas safe supply detecting and compensating method Download PDFInfo
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- CN102564517A CN102564517A CN2010106092189A CN201010609218A CN102564517A CN 102564517 A CN102564517 A CN 102564517A CN 2010106092189 A CN2010106092189 A CN 2010106092189A CN 201010609218 A CN201010609218 A CN 201010609218A CN 102564517 A CN102564517 A CN 102564517A
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Abstract
The invention discloses a gas safe supply detecting and compensating method comprising the following steps of: comparing an ideal gas flow range established in a control unit with an actually monitored gas flow value, wherein the actual gas flow value means a flow value of gas passing through a flow regulator; and sending an abnormal information by the control unit if the actual gas flow value is larger than the ideal gas flow range after the comparison. According to the detecting method, the aim of compensating gas flow is achieved through further adjusting the area of an opening for gas to pass through or changing the rotating speed of an air blower, and a favorable expected air-fuel ratio is obtained.
Description
Technical field
The present invention is relevant with the safe handling of gas utensil, the more detailed detection and the compensation method that are meant a kind of gas safety supply.
Background technology
Gas utensil such as gas heater, the gas oven etc. that use known house are to be connected to a gas supply end to obtain the required methane gas of burning through pipeline.Air mixes with methane gas again, and produces good combustion efficiency down in suitable blending ratio (being target air-fuel ratio).For avoiding causing igniting difficult because of air-fuel ratio rare excessively (being that air proportion in mixed gas exceeds the due ratio of target air-fuel ratio); And for avoiding air-fuel ratio overrich (being that air proportion in mixed gas is lower than the due ratio of target air-fuel ratio) to cause the poisonous carbon monoxide that the rough burning of deriving produces harmful to human; Present gas utensil manufacturer; Before product export, promptly passed through careful calculating again; And the setting of the gas output quantity of the gas utensil of completion different type of machines; The gas output pressure of promptly supposing the gas supply end is constant, the aperture area that cooperates control gas to pass through again, and the phase makes the gas utensil can in use obtain best air-fuel ratio.
Only; Gas utensil in the use is vertical to have the unusual situation of air-fuel ratio to take place, and still is difficult for being discovered, even the user realizes in surperise when being mixed with gas or carbon monoxide in the air; Also gas utensil faults of thinking himself to be oneself cause, and can continue to use after the expectation maintenance more.Yet actual conditions possibly have no way of pinpointing the problems in maintenance process, and are but aging and give and upgrading as the mode of dealing with problems with member; In other words; Cause the unusual reason of air-fuel ratio possibly not be to use the gas utensil fault of end to cause, but be derived from the defeated caused by abnormal of confession of gas supply end, promptly; When the gas supply end causes its gas output pressure when not enough or too high for some reason; The most directly influence promptly is to cause the gas flow that imports the gas utensil unusual, and this situation will make that the blending ratio of air and methane gas is unbalance, promptly has the gas utensil in the use of causing to cross the rare or overrich anxiety of peace of endangering of deriving because of air-fuel ratio.So far,, then not only be difficult in time discover different shape, increase the insecurity of use more easily by the ignorances apprentice of use side institute, and when the safety problem generation is arranged, can't differentiate attribution of liability if abnormity point occurs in the gas supply end really.
Summary of the invention
In view of this, fundamental purpose of the present invention is to provide a kind of detection and compensation method of gas safety supply, and have timely caution and differentiate the effect of unusual origination point, and the function of active adjustment gas output quantity to setting value.
Edge is built a desirable gas flow scope to reach above-mentioned purpose in a control module of the gas utensil of a use side in gas safety supply detection method provided by the present invention comprises; Monitoring stream supplies the actual gas flow value on the defeated path through the gas behind the flow regulator of aforementioned gas utensil; And relatively should actual gas flow value and this ideal gas flow scope, if actual gas flow value exceeds outside the desirable gas flow scope, then this control module sends steps such as an abnormal information.
It is defeated when unusual that the present invention finds to have gas to supply according to above-mentioned detection method; Compensation method initiatively is provided; Comprise: control setting this flow regulator on a gas delivery pipe; And under following situation, carry out corresponding adjusting action, wherein: when actual gas flow value was higher than the higher limit of this ideal gas flow scope, this flow regulator reduced the aperture area of gas through this gas delivery pipe; When actual gas flow value was lower than the lower limit of this ideal gas flow scope, this flow regulator amplified the aperture area of gas through this gas delivery pipe; And when the actual gas flow value of monitoring falls within this ideal gas flow scope, end the adjusting action of this flow regulator.
The present invention provides a kind of compensation method again; Promptly in control module, more build the air-fuel ratio scope of allowing of putting; And pass through under the constant prerequisite of aperture area at gas; The rotating speed of one fan blower of control gas utensil, wherein: when actual gas flow value is higher than the higher limit of this ideal gas flow scope, accelerate the rotating speed of this fan blower; When actual gas flow value is lower than the lower limit of this ideal gas flow scope, slow down the rotating speed of this fan blower; Afterwards, when the inner air-fuel ratio of monitoring gas utensil falls within the air-fuel ratio scope of allowing, keep the rotary speed of deciding of this fan blower.
Description of drawings
For being illustrated more clearly in the present invention, enumerate that preferred embodiment and conjunction with figs. specify as after, wherein:
Fig. 1 is the configuration schematic diagram of gas supply end of the present invention and use side.
Fig. 2 is the testing process key diagram of the present invention's one preferred embodiment.
Fig. 3 improves the compensation flow chart illustration of air-fuel ratio for the present invention's one preferred embodiment.
Fig. 4 improves the compensation flow chart illustration of air-fuel ratio for another preferred embodiment of the present invention.
Embodiment
Please join Fig. 1; In ideal conditions; Gas supply end 100 is to supply defeated methane gas to use side 200 through the gas delivery pipe 102 that comprises the pipeline section 102a that is arranged on a gas utensil 202 inside with pressurization methods; The aperture area that cooperates a flow regulator 204 control gas processes that are installed on this gas delivery pipe 102; It is constant to make the gas flow of seeing off from the endpiece 102b of this pipeline section 102a within a certain period of time keep, and mixes the target air-fuel ratio that can not produce harmful gas when the back obtains burning with methane gas to help air.Aforementioned endpiece 102b is that the position is in the burner 202a of gas utensil 202; Gas supply end 100 is an example with the supplier with gas storage tank equipment; 202 in gas utensil is example but not as limit with the water heater.
With the gas flow of detecting use side 200 unusually whether gas safety of the present invention supply detection method promptly be; Judging unusual origination point is to drop on use side 200 or gas supply end 100, and the function with automatic compensation is to keep gas utensil 202 due gas flow under safe handling requires.
The process description that please cooperate Fig. 2; The detection method of preferred embodiment of the present invention comprises specifically provides a detector 206 in order to the monitoring gas flow; This detector 206 is installed in the gas delivery pipe 102 of contiguous flow regulator 204; And between this flow regulator 204 and this endpiece 102b, and electrically connect with a control module 208 of gas utensil 202; This flow regulator 204 is one to receive the electronic type proportioning valve of this control module 208 controls in the present embodiment; Can control the area size of gas through the mode that changes the input voltage size through this place's opening; Certainly; Look actual demand, also can select step motor to change the openings of sizes that gas passes through as driving, step motor is 208 controls of control module also.
Have a data bank in this control module 208; Include a desirable gas flow scope R in this data bank; Said desirable gas flow scope R is meant and keeps constant at the gas output pressure of gas supply end 100; And gas delivery pipe 102 is under the fixing condition of the aperture area that is provided with these flow regulator 204 places, and gas flow of in certain hour, being exported and the ratio after the air mixed drop on allows the gas flow scope in the target air-fuel ratio scope.In this definition, this ideal gas flow scope R has a higher limit R1 and a lower limit R2.
Gas safety of the present invention supply detection method is at this flow regulator 204 not under the state of start; Be that aperture area that gas passes through is when remaining unchanged; Big or small through these detector 206 monitorings through the gas flow after this flow regulator 204, and produce an actual gas flow value Q according to this to this control module 208; Then, control module 208 will compare and interpretation the actual gas flow value Q that is received, wherein:
When actual gas flow value Q falls within higher limit R1 and the lower limit R2 of this ideal gas flow scope R; The gas output pressure of expression gas supply end 100 is normal, and safe in utilization approximately with green cressets (figure does not show) representative that is arranged on gas utensil 202 outsides;
Otherwise; When confirming that actual gas flow value Q exceeds outside higher limit R1 or the lower limit R2 of desirable gas flow scope R; Abnormal conditions appear in the gas output pressure of expression gas supply end 100; This control module 208 will send an abnormal information with the caution user this moment, be to serve as red as reminding and caution usefulness with conversion cresset color in present embodiment.User's information in view of the above will confirm that unusual origination point is to drop on gas supply end 100, but not be derived from gas utensil 202 induced faults at home, can require the dealer of gas supply end 100 to carry out oneself's maintenance further, to safeguard safety in utilization.
When above-mentioned gas output pressure had unusual generation, the gas of this feed end 100 of invar supplied the defeated non-general user of mode can control, so before self-maintenance of gas supply end 100 completion; Be that the gas output pressure still is under the abnormal conditions; The present invention further provides the compensation method that improves air-fuel ratio, to keep gas utensil 202 due gas flow under safe handling requires, please join Fig. 3; This method produces relative adjusting because of situation is different, wherein:
Gas output pressure at gas supply end 100 is too high; When the actual gas flow value Q that causes being monitored is higher than the higher limit R1 of this ideal gas flow scope R; This situation is because of there being the anxiety of the air-fuel ratio of causing overrich; So this control module 208 after calculating, reduces the aperture area of gas through this place with this flow regulator 204 of control, so that the blending ratio of air and methane gas is maintained near target air-fuel ratio; So,, the burner 202a of gas utensil 202 will can not produce poisonous carbon monoxide after igniting igniting;
Otherwise; Gas output pressure at gas supply end 100 is low excessively; When the actual gas flow value Q that causes being monitored is lower than the lower limit R2 of this ideal gas flow scope R; This situation is because of there being the rare excessively difficult anxiety of igniting that causes of the air-fuel ratio of causing, and therefore, this control module 208 aperture area that also these flow regulator 204 amplification gas of control pass through this place after calculating is to increase gas flow.
The compensation method that the present invention provides another kind to improve air-fuel ratio again is mainly used in having the gas utensil of fan blower 210.Be that gas output pressure at gas supply end 100 has unusual generation, and compensate control under the prerequisite that remains unchanged through aperture area of the gas of gas delivery pipe that please join Fig. 1 and Fig. 4, this method comprises:
In control module 208, more build and put the air-fuel ratio scope S that allows;
These detector 206 continuation monitorings are through the gas flow size after this flow regulator 204, and this control module 208 is according to the rotating speed of following situation change fan blower 210, wherein:
When actual gas flow value Q was higher than the higher limit R1 of this ideal gas flow scope R, the rotating speed of control module 208 controls quickening fan blower 210 diluted with the injection rate IR that improves air and gets into the inner air-fuel ratio of burner 202a;
When actual gas flow value Q was lower than the lower limit R2 of this ideal gas flow scope R, the rotating speed of control module 208 controls slowing down fan blower 210 improved the inner air-fuel ratio of burner 202a with the injection rate IR that reduces air.
In the Lambda sensor 212 of gas utensil 202 set inside one, in the monitoring air-fuel ratio falls within this air-fuel ratio scope S that allows, then control the invariablenes turning speed of these fan blowers 210 by this control module 208 in order to the monitoring air-fuel ratio.Otherwise, continue to accelerate or slow down the rotating speed of fan blower 210, in the monitoring air-fuel ratio falls within this air-fuel ratio scope S that allows till.
The above is merely the preferable possible embodiments of the present invention, and equivalent structure that every application instructions of the present invention and claim are done and method for making change, and ought to be included in the claim scope of the present invention.
Claims (6)
1. the detection method of gas safety supply comprises the following step:
In build a desirable gas flow scope in a control module of the gas utensil of a use side;
Monitoring stream supplies the actual gas flow value on the defeated path through the gas behind the flow regulator of aforementioned gas utensil; And
Relatively should actual gas flow value and this ideal gas flow scope, if actual gas flow value exceeds outside the desirable gas flow scope, then this control module sends an abnormal information.
2. the detection method of gas safety supply as claimed in claim 1; Be on a gas delivery pipe of use side, this flow regulator and a detector to be installed; And this detector is between an endpiece of this flow regulator and this gas delivery pipe, and this detector produces should actual gas flow value.
3. compensation method that cooperates claim 1 is to compare this actual gas flow value when exceeding outside the desirable gas flow scope, carries out following steps:
Control setting this flow regulator on a gas delivery pipe, wherein:
When actual gas flow value was higher than the higher limit of this ideal gas flow scope, this flow regulator reduced the aperture area of gas through this gas delivery pipe;
When actual gas flow value was lower than the lower limit of this ideal gas flow scope, this flow regulator amplified the aperture area of gas through this gas delivery pipe;
When the actual gas flow value of monitoring falls within this ideal gas flow scope, end the adjusting action of this flow regulator.
4. compensation method as claimed in claim 3, wherein this flow regulator is to reduce or amplify the aperture area of gas through this gas delivery pipe according to the driving voltage size of this control module generation.
5. compensation method that cooperates claim 1 is the gas utensil that is applied to have fan blower, and exceeds outside the desirable gas flow scope comparing actual gas flow value, and under the constant situation of the aperture area that passes through of gas, carries out following steps:
Control the blower speed of this gas utensil, wherein:
When actual gas flow value was higher than the higher limit of this ideal gas flow scope, the rotating speed of accelerating this fan blower was to improve the air injection rate IR;
When actual gas flow value was lower than the lower limit of this ideal gas flow scope, the rotating speed that slows down this fan blower was to reduce the air injection rate IR;
When the inner air-fuel ratio of monitoring gas utensil falls within the air-fuel ratio scope of allowing, keep the rotary speed of deciding of this fan blower.
6. compensation method as claimed in claim 5 is that this Lambda sensor and control module electrically connect at the Lambda sensor of gas utensil set inside one in order to the monitoring air-fuel ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010609218.9A CN102564517B (en) | 2010-12-23 | 2010-12-23 | Gas safe supply detecting and compensating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010609218.9A CN102564517B (en) | 2010-12-23 | 2010-12-23 | Gas safe supply detecting and compensating method |
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| CN102564517A true CN102564517A (en) | 2012-07-11 |
| CN102564517B CN102564517B (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010609218.9A Active CN102564517B (en) | 2010-12-23 | 2010-12-23 | Gas safe supply detecting and compensating method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274395A (en) * | 2019-06-28 | 2019-09-24 | 华帝股份有限公司 | Control method of self-adaptive full-premix gas water heater and gas water heater |
| CN110274396A (en) * | 2019-06-28 | 2019-09-24 | 华帝股份有限公司 | Control method of full-premix gas water heater and gas water heater |
| CN112146278A (en) * | 2019-06-28 | 2020-12-29 | 华帝股份有限公司 | Control method of full-premix gas water heater and gas water heater |
Citations (7)
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| GB2319831A (en) * | 1996-11-30 | 1998-06-03 | Basic Patents | Safety system for instantaneous water heaters |
| US20050250062A1 (en) * | 2004-05-06 | 2005-11-10 | New Power Concepts Llc | Gaseous fuel burner |
| CN1979054A (en) * | 2005-12-05 | 2007-06-13 | 保音股份有限公司 | Water heater quick constant-temperature control method and apparatus |
| US20070221276A1 (en) * | 2006-03-22 | 2007-09-27 | Honeywell International Inc. | Modulating gas valves and systems |
| TWM325473U (en) * | 2007-05-24 | 2008-01-11 | Grand Mate Co Ltd | Oxygen detection and control device |
| CN201476101U (en) * | 2009-08-11 | 2010-05-19 | 彭亦程 | Device for protecting leakage of indoor flue gas |
| CN201561578U (en) * | 2009-12-08 | 2010-08-25 | 海尔集团公司 | Fan control device of a gas equipment |
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2010
- 2010-12-23 CN CN201010609218.9A patent/CN102564517B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2319831A (en) * | 1996-11-30 | 1998-06-03 | Basic Patents | Safety system for instantaneous water heaters |
| US20050250062A1 (en) * | 2004-05-06 | 2005-11-10 | New Power Concepts Llc | Gaseous fuel burner |
| CN1979054A (en) * | 2005-12-05 | 2007-06-13 | 保音股份有限公司 | Water heater quick constant-temperature control method and apparatus |
| US20070221276A1 (en) * | 2006-03-22 | 2007-09-27 | Honeywell International Inc. | Modulating gas valves and systems |
| TWM325473U (en) * | 2007-05-24 | 2008-01-11 | Grand Mate Co Ltd | Oxygen detection and control device |
| CN201476101U (en) * | 2009-08-11 | 2010-05-19 | 彭亦程 | Device for protecting leakage of indoor flue gas |
| CN201561578U (en) * | 2009-12-08 | 2010-08-25 | 海尔集团公司 | Fan control device of a gas equipment |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274395A (en) * | 2019-06-28 | 2019-09-24 | 华帝股份有限公司 | Control method of self-adaptive full-premix gas water heater and gas water heater |
| CN110274396A (en) * | 2019-06-28 | 2019-09-24 | 华帝股份有限公司 | Control method of full-premix gas water heater and gas water heater |
| CN112146278A (en) * | 2019-06-28 | 2020-12-29 | 华帝股份有限公司 | Control method of full-premix gas water heater and gas water heater |
| CN112146278B (en) * | 2019-06-28 | 2022-09-09 | 华帝股份有限公司 | Control method of full-premix gas water heater and gas water heater |
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| Publication number | Publication date |
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| CN102564517B (en) | 2015-03-25 |
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