CN101191568A - Method for controlling gas valve - Google Patents
Method for controlling gas valve Download PDFInfo
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- CN101191568A CN101191568A CNA2006101624224A CN200610162422A CN101191568A CN 101191568 A CN101191568 A CN 101191568A CN A2006101624224 A CNA2006101624224 A CN A2006101624224A CN 200610162422 A CN200610162422 A CN 200610162422A CN 101191568 A CN101191568 A CN 101191568A
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- gas
- valve
- controlling
- pressure differential
- burner
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Abstract
The invention relates to a gas valve control method which has the following steps: controlling the excitation and actuation of an electromagnetic valve in a differential pressure tray in a gas water heater to regulate gas flow rate in a first pressure chamber of the differential pressure tray, accordingly controlling a rubber membrane in the differential pressure tray to displace and move towards the first pressure chamber, thereby pushing the gas valve to open a gas passage slightly to enable appropriate amount of outgoing gas to flow into a burner, then controlling the electromagnetic valve to carry out alternate excitation to keep the gas passage opening slightly, controlling the electromagnetic valve to carry out excitation again after lighting up, thereby enabling the gas passage to open completely for controlling the gas flow rate stably and effectively preventing the gas water heater against deflagration.
Description
Technical field
The present invention relates to a kind of method for controlling gas valve, refer to a kind of excitatory control of replacing of solenoid valve that utilizes especially, stablize the method for gas valve opening situation in the pressure differential disc.
Background technique
Figure 1 shows that the planimetric map of family expenses gas heater, this water heater 9 is mainly being supplied with the hot water that pouring (washing one's hair) is bathed needs usefulness, and its operating principle is to utilize the keying of the cooperation of a water pond 5 and a pressure differential disc 7 with control water heater 9.When turning on the hot water tap, first hydroecium in the water pond 5 and second hydroecium form pressure difference, thereby promote an inner diaphragm displacement, flow into pressure differential disc 7 with control gas.
With reference to figure 2, light the sectional arrangement drawing of female fire for existing pressure differential disc, gas can enter second pressure chamber 76 from the inflow entrance 80 of pressure differential disc 7 and flow into first pressure chamber 75 via path 81, normally open valve 72, this moment, ignition 95 starts made ignition plug 96 discharge generation sparks, simultaneously, normally close valve 73 starts become to open valve position, be that its valve plug 84 is opened the gas that make in first pressure chamber 75 and can pass through normally close valve 73, and flow to nozzle 97, become female fiery by this spark ignition by the outflow opening 82 of pressure differential disc 7.
With reference to figure 3, light the sectional arrangement drawing of main fire for existing pressure differential disc, in case flame detecting device 98 detects after female fire lights, ignition plug 96 will stop discharge, at this moment, normally open valve 72 starts become to close valve position, be that its valve plug 85 sealings stop gas to flow into first pressure chamber 75, so the gas in first pressure chamber 75 is under the situation of only export but no import, so that its pressure makes elastomer diaphragm 74 towards the 75 direction displacements of first pressure chamber less than the gas pressure in second pressure chamber 76, leave opening 83 and promote valve 78, make gas flow to burner 90 via opening 83, being ignited by female fire becomes main fire, with the usefulness of supply heating.
But, above-mentioned existing structure is on the method step of lighting female fire, the single switching start of only depending merely on this normally open valve 72 and this normally close valve 73 comes the gas flow of control flows to burner 90, that is to say, when normally open valve 72 starts become to close valve position, elastomer diaphragm 74 in the pressure differential disc 7 is understood moment towards the 75 direction displacements of first pressure chamber, makes gas flow to burner 90 in a large number.Aforesaid method regular meeting causes the air inflow of gas inhomogeneous, and makes gas heater produce situations such as detonation, even what is heard is arranged when therefore also causing danger.As from the foregoing, above-mentioned existing gas utensil obviously has inconvenience and exists with defective, and can wait to be improved in the installation and use of reality.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art and defective, a kind of method for controlling gas valve is proposed, its step is, refrigerator valve excitation start in the control gas heater in the pressure differential disc, to adjust the gas flow of first pressure chamber in the pressure differential disc, and then the rubber membrane in the control pressure differential disc moves towards first pressure chamber's direction displacement, opened gas channel slightly to promote the gas valve, make suitable gas gas output flow into burner, then control electromagnetic valve is alternately excitatory, being used for keeping gas channel opens slightly, and control electromagnetic valve is excitatory once more after lighting flame, allow gas channel all open,, reach situations such as effectively preventing gas heater generation detonation with the throughput that goes out of stable control gas.
For reaching above-mentioned purpose, the invention provides a kind of method for controlling gas valve, be applied to the pressure differential disc control of gas heater, comprise step: after gas heater starts, refrigerator valve excitation start in the control pressure differential disc, in order to the pressure of gas in the adjustment pressure differential disc, and then open gas channel slightly; The solenoid valve of control in the pressure differential disc replaces excitatory start, in order to keeping the pressure of gas in the pressure differential disc, and then keeps gas channel unlatching slightly; And the gas channel of opening slightly, allow suitable gas gas output flow into the burner of gas heater.
Above general introduction and ensuing detailed description are all exemplary in nature, are in order to further specify interest field of the present invention.And about other purpose of the present invention and advantage, will in follow-up explanation and accompanying drawing, be set forth.
Description of drawings
Fig. 1 is the planimetric map of family expenses gas heater;
Fig. 2 lights the sectional arrangement drawing of female fire for existing pressure differential disc;
Fig. 3 lights the sectional arrangement drawing of main fire for existing pressure differential disc;
Fig. 4 is the sectional arrangement drawing of the pressure differential disc of the existing single solenoid valve of tool;
Fig. 5 is a schematic flow sheet of the present invention.
Symbol description among the figure
9 water heaters, 90 burners
95 ignitions, 96 ignition plugs
97 nozzles, 98 flame detecting devices
5 water ponds, 7 pressure differential discs
72 normally open valves, 73 normally close valves
74 elastomer diaphragms, 75 first pressure chambers
76 second pressure chambers 78 promote valve
80 inflow entrances, 81 paths
82 outflow openings, 83 openings
84 valve plugs, 85 valve plugs
71 solenoid valves
The valve plug of valve plug 87 break contacts of 86 normal opened contacts
Embodiment
The present invention relates to a kind of method for controlling gas valve, this method operates on the pressure differential disc structure as Fig. 4 tradition gas heater, and it is another conventional construction that pressure differential disc 7 shown in Figure 4 uses a solenoid valve 71 with Chang Kai and break contact.The disclosed pressure differential disc structure of this structure and Fig. 2 and Fig. 3, its operating principle is identical with the effect of reaching, and member is identical, indicates with same-sign.Yet method provided by the invention is not subjected to its structural limitations, can be applicable in the pressure differential disc of any conventional water heaters.
Please cooperate Fig. 4, consult shown in Figure 5, Fig. 5 is a schematic flow sheet of the present invention, its step is as follows: at first, solenoid valve 71 excitatory starts (S1) in the control pressure differential disc 7, be used for closing the valve plug 86 of normal opened contact and the valve plug 87 of opening break contact, allow gas stop to flow into first pressure chamber 75 in the pressure differential disc 7, the gas in the pressure differential disc 7 can flow out via opening 83 simultaneously.So the gas in first pressure chamber 75 is under the situation of only export but no import, so that the pressure in it is less than the gas pressure in second pressure chamber 76, this moment, elastomer diaphragm 74 moved towards the 75 direction displacements of first pressure chamber, and then promotion gas valve 78 leaves opening 83, opened gas channel slightly, make suitable gas gas output flow into burner.
Then, control electromagnetic valve 71 is alternately excitatory, and the valve plug 86 of normal opened contact and the valve plug 87 of opening break contact can alternately be opened and closed, and makes gas channel can keep slightly and opens, to continue allowing suitable gas gas output flow into burner 90 (S2).And after burner 90 was lighted flame, control electromagnetic valve 71 excitatory (S3) allowed gas channel all open once more, with the throughput that goes out of stable control gas, reached situations such as effectively preventing gas heater generation detonation.
Composite Fig. 1 and Fig. 4 of closing, water heater 9 uses method for controlling gas valve of the present invention, its operating principle is as follows: after the user fetches boiling water tap, ignition plug 96 discharge generation sparks, solenoid valve 71 excitatory starts this moment, close the valve plug 86 of normal opened contact and the valve plug 87 of opening break contact, in order to open gas channel slightly, control electromagnetic valve 71 replaces excitatory start again, the valve plug 86 of normal opened contact and the valve plug 87 of break contact can alternately be opened and closed, to keep gas channel unlatching slightly, make suitable gas gas output flow into burner 90.When detecting out burner 90 when having lighted, solenoid valve 71 stops to replace excitatory start, and change by excitatory start, allow the valve plug 86 of normal opened contact be in closed condition, the valve plug 87 of break contact is in opening state, gas channel is opened fully, flowed into burner 90 to supply whole gas gas outputs.
According to above stated specification, the present invention replaces excitatory start by control electromagnetic valve 71, and can adjust the size of gas channel, and the flow that makes gas flow into burner 90 obtains suitable adjusting.Thereby can effectively prevent existing controlling method, and after the user fetched boiling water, before burner 90 was unignited, gas valve 78 was opened rapidly, and a large amount of unburned gas flow into burners 90, and have the danger that produces gas explosion.Simultaneously, more can reach the thermostatically control of water heater 9 water temperatures by this kind controlling method.
As mentioned above, according to method for controlling gas valve of the present invention, have following many advantages at least:
(1) stable control gas flow prevents that gas explosion from taking place.
(2) increase whole Security.
(3) stablize water-exit temperature, reach thermostatically control.
The above only is a preferable possible embodiments of the present invention, be not so promptly limit to claim of the present invention, so use such as specification of the present invention and accompanying drawing content institute for it equivalent structure change, or directly or indirectly apply to other relevant technical field and all in like manner all be contained in the scope that the present invention contains.
The above only is the detailed description and the accompanying drawing of the specific embodiment of one of the best of the present invention, any those skilled in the art in the field of the invention, can think easily and variation or modify all can be encompassed in the scope of claims of the present invention.
Claims (3)
1. a method for controlling gas valve is applied to the pressure differential disc control of gas heater, it is characterized in that, comprises step:
After gas heater started, the refrigerator valve excitation start in the control pressure differential disc in order to the pressure of gas in the adjustment pressure differential disc, and then was opened gas channel slightly;
The solenoid valve of control in the pressure differential disc replaces excitatory start, in order to keeping the pressure of gas in the pressure differential disc, and then keeps gas channel unlatching slightly; And
The gas channel of Kai Qiing allows suitable gas gas output flow into the burner of gas heater slightly.
2. method for controlling gas valve as claimed in claim 1 is characterized in that, after allowing suitable gas gas output flow into the burner step of gas heater, further detects the flame on the burner, judges whether it lights flame.
3. method for controlling gas valve as claimed in claim 2, it is characterized in that, behind the flame that detects on the burner, further control this solenoid valve and stop to replace excitatory start, change with excitatory start, allow whole gas gas outputs flow into the burner of gas heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101624224A CN101191568A (en) | 2006-11-22 | 2006-11-22 | Method for controlling gas valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101624224A CN101191568A (en) | 2006-11-22 | 2006-11-22 | Method for controlling gas valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101191568A true CN101191568A (en) | 2008-06-04 |
Family
ID=39486721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101624224A Pending CN101191568A (en) | 2006-11-22 | 2006-11-22 | Method for controlling gas valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101191568A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565388A (en) * | 2014-12-19 | 2015-04-29 | 宁波金欧五金制品有限公司 | Common valve device for automatically switching spray nozzles according to air sources |
| CN105402766A (en) * | 2014-09-10 | 2016-03-16 | 关隆股份有限公司 | Gas valve control method for gas appliance |
-
2006
- 2006-11-22 CN CNA2006101624224A patent/CN101191568A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402766A (en) * | 2014-09-10 | 2016-03-16 | 关隆股份有限公司 | Gas valve control method for gas appliance |
| CN105402766B (en) * | 2014-09-10 | 2018-09-11 | 关隆股份有限公司 | Gas valve control method for gas |
| CN104565388A (en) * | 2014-12-19 | 2015-04-29 | 宁波金欧五金制品有限公司 | Common valve device for automatically switching spray nozzles according to air sources |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080604 |