CN111828705B - Gas valve and control device and control method thereof - Google Patents
Gas valve and control device and control method thereof Download PDFInfo
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- CN111828705B CN111828705B CN201910316376.6A CN201910316376A CN111828705B CN 111828705 B CN111828705 B CN 111828705B CN 201910316376 A CN201910316376 A CN 201910316376A CN 111828705 B CN111828705 B CN 111828705B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/12—Arrangement or mounting of control or safety devices
- F24C3/122—Arrangement or mounting of control or safety devices on stoves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Combustion (AREA)
Abstract
A gas valve and its control device and control method, wherein the control device receives the voltage produced by a thermocouple, and when the voltage produced by the thermocouple is greater than a predetermined voltage, output the second voltage and output the first voltage; the control device stops outputting the first voltage after receiving a fire-off signal, starts timing, and stops outputting the second voltage when the timed time reaches a preset time.
Description
Technical Field
The present invention relates to a gas valve; in particular to a gas valve with the function of closing gas at fixed time and a control device and a control method thereof.
Background
Known gas fireplaces are used for burning gas to generate heat energy, so as to increase the indoor temperature. Fig. 1 shows a combustion control assembly of a conventional gas fireplace, which includes a gas valve 1, an ignition electrode 9, an ignition switch 11a, an ignition circuit 11b, a main fire burner 13a, a main fire burner 13b, a thermocouple 15 and a main fire control switch 17, wherein the gas valve 1 has a valve body 1a, the valve body 1a has a main fire gas passage 5a and a main fire gas passage 5b, and a main fire solenoid valve 3a and a main fire solenoid valve 3b are disposed inside the valve body 1a and located in the main fire gas passage 5a and the main fire gas passage 5b, respectively. The valve body 1a is provided with a flow regulating valve 7, and the flow regulating valve 7 is used for controlling the opening degree of the main fire gas channel 5a and triggering the main fire electromagnetic valve 3b by a mandril. When a user touches the flow regulating valve 7, the flow regulating valve 7 pushes the pilot fire electromagnetic valve 3b open by the ejector rod to open the pilot fire gas channel 5b, so that the gas flows from the gas source to the pilot fire burner 13b through the pilot fire gas channel 5b, the user touches the ignition switch 11a, the ignition switch 11a enables the ignition circuit 11b to output high voltage to the ignition electrode 9 for ignition, and the gas output by the pilot fire burner 13b is ignited to form pilot fire. The thermocouple 15 detects the flame of the main fire and outputs a detection voltage to the main fire solenoid valve 3b, and when the detection voltage rises to a predetermined voltage value, the main fire solenoid valve 3b is kept magnetized and opened. When the main fire control switch 17 is turned on, the detection voltage is supplied to the main fire solenoid valve 3a, the main fire gas passage 5a is opened to supply gas to the main fire burner 13a, and the gas output from the main fire burner 13a is ignited by the main fire to form the main fire for heating.
When the user wants to close the main fire, the main fire control switch 17 is closed to block the detection voltage transmitted to the main fire electromagnetic valve 3a, so that the main fire electromagnetic valve 3a closes the main fire gas passage 5 a.
In order to conveniently ignite the main fire next time and adapt to the difficulty in igniting the main fire in a low-temperature area, the conventional gas fireplace does not extinguish the main fire after closing the main fire but keeps the burning of the main fire continuously. However, the design of the gas fireplace to continuously maintain the burning of the pilot fire not only wastes energy, but also has safety concerns.
Disclosure of Invention
Accordingly, the present invention is directed to a gas valve, a control device and a control method thereof, which can close a main fire at a predetermined time after the main fire is closed.
In order to achieve the above object, the present invention provides a control device for a gas valve, wherein the gas valve comprises a valve body, a main fire solenoid valve and a main fire solenoid valve, the valve body has a main fire gas passage and a main fire gas passage, and the valve body is provided with a first control terminal and a second control terminal, the first control terminal and the second control terminal are respectively electrically connected to the main fire solenoid valve and the main fire solenoid valve; the main fire electromagnetic valve receives a first voltage through the first control terminal to open the main fire gas channel, and after the first voltage is relieved, the main fire electromagnetic valve closes the main fire gas channel; the pilot fire electromagnetic valve receives a second voltage through the second control terminal to open the pilot fire gas channel, and after the second voltage is released, the pilot fire electromagnetic valve closes the pilot fire gas channel;
the control device comprises a first output terminal, a second output terminal, a first input terminal, a second input terminal and a controller, wherein the first output terminal is used for being connected with the first control terminal, the second output terminal is used for being connected with the second control terminal, the first input terminal is used for being connected with a thermocouple to receive voltage generated by the thermocouple, the second input terminal is used for being connected with a main fire control switch to receive a fire-off signal generated by the main fire control switch, and the controller is electrically connected with the first output terminal, the second output terminal, the first input terminal and the second input terminal; the controller outputs the second voltage to the second output terminal and outputs the first voltage to the first output terminal when the voltage received by the first input terminal is greater than a predetermined voltage; after the controller receives the fire-off signal at the second input terminal, the controller stops outputting the first voltage to the first output terminal, starts timing, and stops outputting the second voltage to the second output terminal when the timed time reaches a preset time.
Another gas valve provided by the present invention comprises a valve body, a main fire solenoid valve and a main fire solenoid valve, wherein the valve body has a main fire gas passage and a main fire gas passage, the main fire solenoid valve is disposed on the valve body and configured to receive a first voltage to open the main fire gas passage, after the first voltage is removed, the main fire solenoid valve closes the main fire gas passage, the main fire solenoid valve is disposed on the valve body and configured to receive a second voltage to open the main fire gas passage, and after the second voltage is removed, the main fire solenoid valve closes the main fire gas passage, which is characterized in that: the control device comprises a first input terminal, a second input terminal and a controller, wherein the first input terminal is connected with a thermocouple to receive the voltage generated by the thermocouple; the second input terminal is connected with a main fire control switch to receive a fire-off signal generated by the main fire control switch; the controller is electrically connected with the main fire electromagnetic valve, the first input terminal and the second input terminal; the controller outputs the second voltage to the main fire electromagnetic valve and outputs the first voltage to the main fire electromagnetic valve when the voltage received by the first input terminal is greater than a preset voltage; after the controller receives the fire-off signal at the second input terminal, the controller stops outputting the first voltage to the main fire electromagnetic valve, starts timing, and stops outputting the second voltage to the main fire electromagnetic valve when the timed time reaches a preset time.
The invention further provides a control method of a gas valve, wherein the gas valve comprises a valve body, a main fire electromagnetic valve and a main fire electromagnetic valve, the valve body is provided with a main fire gas channel and a main fire gas channel, the main fire electromagnetic valve is arranged on the valve body and used for receiving a first voltage to open the main fire gas channel, and after the first voltage is relieved, the main fire electromagnetic valve closes the main fire gas channel; the pilot fire electromagnetic valve is arranged on the valve body and used for receiving a second voltage to open the pilot fire gas channel, and after the second voltage is relieved, the pilot fire electromagnetic valve closes the pilot fire gas channel; the control method is executed by a control device and comprises the following steps:
receiving a voltage generated by a thermocouple, and outputting the second voltage and the first voltage when the voltage generated by the thermocouple is greater than a predetermined voltage; and stopping outputting the first voltage after receiving a fire-off signal, starting timing, and stopping outputting the second voltage when the timed time reaches a preset time.
The invention has the advantages that after the main fire gas channel is closed and a preset time is reached, the controller automatically closes the main fire gas channel to stop the main fire, thereby not only avoiding the waste of energy caused by the continuous burning of the main fire, but also avoiding accidents such as fire and the like.
Drawings
FIG. 1 is a schematic view of a conventional gas fireplace.
FIG. 2 is a schematic view of a gas valve and a control device thereof according to a first preferred embodiment of the present invention.
FIG. 3 is a flowchart of a control method according to a first preferred embodiment of the present invention.
FIG. 4 is a schematic view of a gas valve and a control device thereof according to a second preferred embodiment of the present invention.
FIG. 5 is a schematic view of a gas valve and a control device thereof according to a third preferred embodiment of the present invention.
Detailed Description
In order that the invention may be more clearly described, several preferred embodiments will now be described in detail with reference to the accompanying drawings. Referring to fig. 2, a gas valve 100 and a control device 200 according to a first preferred embodiment of the present invention are shown, and the gas valve 100 and the control device 200 in this embodiment are used in a fireplace, but not limited thereto, and may be any gas heating device.
As shown in fig. 2, the gas valve 100 includes a valve body 10, a main fire electromagnetic valve 12a and a main fire electromagnetic valve 12b, the valve body 10 has a main fire gas passage 10a and a main fire gas passage 10b, the main fire gas passage 10a and the main fire gas passage 10b are communicated to the same gas source, the main fire gas passage 10a is connected to a main fire burner 14a at an end far from the gas source, the main fire gas passage 10b is connected to a main fire burner 14b at an end far from the gas source, the main fire electromagnetic valve 12a is disposed at a position between the gas source and the main fire burner 14a on the main fire gas passage 10a, the main fire electromagnetic valve 12b is disposed at a position between the gas source and the main fire burner 14b on the main fire gas passage 10b, in this embodiment, the main fire electromagnetic valve 12a and the main fire electromagnetic valve 12b are closed type normal electromagnetic valves, which are operated by voltage to be opened or closed, when the electromagnetic valve is opened, gas passes through the electromagnetic valve, and when the electromagnetic valve is closed, the gas is blocked. The valve body 10 is provided with a first control terminal 11a and a second control terminal 11b, the first control terminal 11a and the second control terminal 11b are respectively electrically connected with the main fire electromagnetic valve 12a and the main fire electromagnetic valve 12b, the main fire electromagnetic valve 12a receives a first voltage through the first control terminal 11a to open the main fire gas channel 10a, the first voltage is a high potential, when the first voltage is removed, the voltage drops to a low potential, the main fire electromagnetic valve 12a closes the main fire gas channel 10 a; the pilot fire solenoid valve 12b receives a second voltage through the second control terminal 11b to open the pilot fire gas passage 10b, the second voltage is a high voltage, the voltage drops to a low voltage after the second voltage is removed, and the pilot fire solenoid valve 12b closes the pilot fire gas passage 10 b.
The valve body 10 is further provided with a flow control valve 16 for a user to rotate to adjust the main fire gas passage 10a, the flow control valve 16 has a push rod (not shown) for pushing open the main fire electromagnetic valve 12b to open the main fire gas passage 10b, so that the gas flows to the main fire burner 14b through the main fire gas passage 10b, the flow control valve 16 simultaneously activates an ignition switch 18 when rotating, in other embodiments, the ignition switch 18 can also be activated by a user's pressing, when the ignition switch 18 is activated, the ignition circuit 20 is triggered to output a high voltage to the ignition electrode 22, so that the ignition electrode 22 generates a spark and ignites the main fire burner 14b, so as to ignite the gas flowing to the main fire burner 14b, and further to generate flame in the main fire burner 14b, a thermocouple 24 is provided beside the main fire burner 14b for detecting the flame and outputting a corresponding detection voltage, after the detection voltage gradually rises to a predetermined voltage value, the pilot fire solenoid valve will be kept magnetized and opened, and at this time, the user releases the flow regulating valve 16, and the pilot fire solenoid valve 12b is still kept opened.
The control device 200 comprises a first output terminal 30a, a second output terminal 30b, a first input terminal 32a, a second input terminal 32b and a controller 34, wherein the controller 34 is a micro-controller unit (MCU) electrically connected to the first output terminal 30a, the second output terminal 30b, the first input terminal 32a and the second input terminal 32b, the first output terminal 30a is connected to the first control terminal 11a, the second output terminal 30b is connected to the second control terminal 11b, the first input terminal 32a is connected to the thermocouple 24, and the second input terminal 32b is connected to the main fire control switch 26; when the detection voltage outputted from the thermocouple 24 to the first input terminal 32a continuously rises to a predetermined voltage, the controller 34 operates using the power supplied from the thermocouple 24, and the controller 34 outputs a second voltage to the second output terminal 30b, the pilot solenoid valve 12b receives the second voltage through the second control terminal 11b to keep the pilot gas passage 10b open, and the controller 34 also simultaneously outputs a first voltage to the first output terminal 30a, the pilot solenoid valve 12a receives the first voltage through the first control terminal 11a to open, so that the gas flows to the pilot burner 14a through the pilot gas passage 10a, and the flame of the pilot burner 14b is ignited to ignite the gas 14a flowing to the pilot burner, thereby generating a flame in the pilot burner 14 a. In addition, the control device 200 may be combined with the valve body 10.
In this embodiment, when the user touches the main fire control switch 26 to generate a fire-off signal, the controller 34 stops outputting the first voltage to the first output terminal 30a after the second input terminal 32b receives the fire-off signal, so that the main fire electromagnetic valve 12a closes the main fire gas passage 10a, and the controller 34 starts timing, when the timed time reaches a predetermined time, the controller 34 stops outputting the second voltage to the second output terminal 30b, so that the main fire electromagnetic valve 12b closes the main fire gas passage 10b, and the main fire is extinguished, in this embodiment, the predetermined time is seven days, that is, after the main fire electromagnetic valve 12a closes the main fire gas passage 10a for seven days, the controller 34 controls the main fire electromagnetic valve 12b to close the main fire gas passage 10 b.
However, after the main fire electromagnetic valve 12a closes the main fire gas channel 10a, before the time counted by the controller 34 has not reached the predetermined time, the user triggers the main fire control switch 26 to generate an ignition signal, after the controller 34 receives the ignition signal at the second input terminal 32b, the controller 34 stops timing and outputs the first voltage to the first output terminal 30a, the main fire electromagnetic valve 12a receives the first voltage through the first control terminal 11a to be opened, so that the gas flows to the main fire burner 14a through the main fire gas channel 10a, and the flame of the main fire burner 14b is ignited to ignite the gas flowing to the main fire burner 14a, thereby generating the flame of the main fire burner 14 a.
In this embodiment, the control device 200 further includes a pilot light 36, the pilot light 36 is electrically connected to the controller 34, when the controller 34 outputs the second voltage to the second output terminal 30b, the controller 34 controls the pilot light 36 to be turned on, and when the timing time of the controller 34 reaches the predetermined time, the pilot light 36 is turned off, the pilot light 36 may be an LED light, which can be disposed at a position easily seen by the user, so that the user can know the current state of the pilot light by turning on or off the pilot light 36.
With the above-mentioned gas valve 100 and control device 200, the control method of the gas valve of the present embodiment can be performed, the control method includes the following steps as shown in fig. 3:
first, in step S1, a voltage generated by a thermocouple is received, and when the voltage generated by the thermocouple is greater than a predetermined voltage, the second voltage and the first voltage are output to ignite a main fire. In this embodiment, the controller 34 receives the detection voltage outputted from the thermocouple 24, when the detection voltage is greater than a predetermined voltage, the controller 34 operates using the power supplied from the thermocouple 24, and the controller 34 outputs a second voltage to the pilot fire solenoid valve 12b to keep the pilot fire gas passage 10b open, and outputs a first voltage to the pilot fire solenoid valve 12a to open the pilot fire gas passage 10a to ignite the pilot fire.
In step S2, after receiving a fire-off signal, the first voltage is stopped being outputted, and the timing is started, and when the timing time reaches a predetermined time, the second voltage is stopped being outputted. In this embodiment, the user touches the main fire control switch 26, the main fire control switch 26 outputs a fire-off signal to the controller 34, after the controller 34 receives a fire-off signal, the controller stops outputting the first voltage to the main fire electromagnetic valve 12a to close the main fire gas passage 10a, and the main fire is extinguished, and meanwhile, the controller 34 starts timing, and when the timed time reaches a predetermined time, the controller stops outputting the second voltage to the main fire electromagnetic valve 12b to close the main fire gas passage 10b, and the main fire is extinguished.
In step S1, the method further includes the step of controlling the controller 34 to turn on a pilot light 36 when the controller 34 outputs the second voltage; in step S2, the method further includes controlling the pilot light 36 to be turned off when the controller 34 times the predetermined time.
In the embodiment, before the time counted by the controller 34 reaches the predetermined time, the user triggers the main fire control switch 26, the main fire control switch 26 outputs a fire signal to the controller 34, and after receiving the fire signal, the controller 34 stops timing and outputs the first voltage to the main fire electromagnetic valve 12a, so as to open the main fire gas passage 10 a.
Therefore, when the preset time is up, the controller automatically closes the gas channel of the main fire to stop the main fire, so that the waste of energy caused by continuous combustion of the main fire can be avoided, and accidents such as fire disasters can be avoided.
Referring to fig. 4, a gas valve 300 and a control device 400 according to a second preferred embodiment of the present invention are substantially the same as the gas valve 100 and the control device 200 according to the first preferred embodiment, except that the ignition switch 18 and the ignition circuit 20 are electrically connected to the controller 34, respectively, and the controller 34 is electrically connected to a power source P (such as a direct current or a battery), before ignition is started, the controller 34 operates using power supplied by the power source P, when the user rotates the flow rate adjustment valve 16 to an ignition position, the main ignition solenoid valve 12b is pushed open to open the main ignition gas passage 12b and simultaneously the ignition switch 18 is triggered, so that the ignition switch 18 outputs an ignition signal to the controller 34, and after the controller 34 receives the ignition signal, the ignition circuit 20 is triggered to output a high voltage to the ignition electrode 22, so that the ignition electrode 22 generates a spark, and the controller 34 simultaneously outputs the second voltage to the second output terminal 30b and keeps outputting the second voltage, the pilot fire solenoid valve 12b receives the second voltage through the second control terminal 11b to keep the pilot fire gas passage 10b open, at this time, the user releases the flow regulating valve 16, and the pilot fire solenoid valve 12b keeps open.
The control method of the gas valve of the present embodiment can also use the steps of the first embodiment, except that before the controller 34 receives the voltage of the thermocouple 24, the controller 34 operates to output the second voltage by using the power supplied by the power source P; when the voltage generated by the thermocouple 24 is greater than the predetermined voltage, the controller 24 uses the power of the thermocouple 24 to output the second voltage and the first voltage without using the power supplied by the power source P, and then uses the power supplied by the power source P until the voltage generated by the thermocouple 24 is less than the predetermined voltage.
Fig. 5 shows a gas valve 500 according to a third preferred embodiment of the present invention, which is different from the first embodiment in that a control device 60 is integrated into a valve body 10 of the gas valve 500 in this embodiment, that is, the gas valve 500 includes the valve body 10 and the control device 60, a controller 34 is directly electrically connected to a main fire electromagnetic valve 12a and a pilot fire electromagnetic valve 12b, the controller 34 is not connected to the main fire electromagnetic valve 12a and the pilot fire electromagnetic valve 12b through a first control terminal 11 and a second control terminal 11b, and the controller 34 outputs a second voltage to the pilot fire electromagnetic valve 12b and outputs a first voltage to the main fire electromagnetic valve 12a when a voltage received by a first input terminal 32a is greater than a predetermined voltage.
The control method of the gas valve 500 of this embodiment can also use the steps of the first embodiment.
In summary, in the gas valve and the control apparatus and method thereof of the present invention, after the main fire gas passage 10a is closed, the user can define a predetermined time, and when the predetermined time is reached, the controller 34 automatically closes the main fire gas passage 10b, thereby not only avoiding the waste of energy, but also avoiding the accidents such as fire and the like, and improving the safety of the user in using the gas valve.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications to the present invention as described and claimed should be included in the scope of the present invention.
Description of the reference numerals
[ conventional ]
1 gas valve 1a valve body
3a main fire electromagnetic valve 3b main fire electromagnetic valve
5a main fire gas passage 5b main fire gas passage
7 flow control valve 9 ignition electrode
13a main fire burner 13b pilot fire burner
15 thermocouple 17 main fire control switch
[ invention ]
100 gas valve
10 valve body
10a main fire gas passage 10b pilot fire gas passage
11a first control terminal 11b a second control terminal
12a main fire electromagnetic valve 12b pilot fire electromagnetic valve
14a main fire burner 14b pilot fire burner
16 flow control valve 18 ignition switch 20 ignition circuit
22 ignition electrode 24 thermocouple 26 main fire control switch
200 control device
30a first output terminal 30b a second output terminal
32a first input terminal 32b second input terminal
34 controller 36 pilot lamp
300 gas valve
400 control device
500 gas valve
60 control device
P power supply
Claims (11)
1. A control device of a gas valve comprises a valve body, a main fire electromagnetic valve and a main fire electromagnetic valve, wherein the valve body is provided with a main fire gas channel and a main fire gas channel, a first control terminal and a second control terminal are arranged on the valve body, and the first control terminal and the second control terminal are respectively and electrically connected with the main fire electromagnetic valve and the main fire electromagnetic valve; the main fire electromagnetic valve receives a first voltage through the first control terminal to open the main fire gas channel, and after the first voltage is relieved, the main fire electromagnetic valve closes the main fire gas channel; the pilot fire electromagnetic valve receives a second voltage through the second control terminal to open the pilot fire gas channel, and after the second voltage is released, the pilot fire electromagnetic valve closes the pilot fire gas channel; the control device includes:
a first output terminal for connecting to the first control terminal;
a second output terminal for connecting to the second control terminal;
a first input terminal for connecting a thermocouple to receive a voltage generated by the thermocouple;
a second input terminal for connecting a main fire control switch to receive a fire-off signal generated by the main fire control switch being triggered by a user;
a controller electrically connected to the first output terminal, the second output terminal, the first input terminal and the second input terminal; the controller outputs the second voltage to the second output terminal and outputs the first voltage to the first output terminal when the voltage received by the first input terminal is greater than a predetermined voltage; and after the controller receives the fire-off signal at the second input terminal, the controller stops outputting the first voltage to the first output terminal, starts timing, and stops outputting the second voltage to the second output terminal when the timed time reaches a preset time.
2. The control device for a gas valve according to claim 1, comprising a pilot lamp electrically connected to the controller, the controller controlling the pilot lamp to be turned on when the controller outputs the second voltage to the second output terminal; and when the timed time reaches the preset time, the controller controls the pilot lamp to extinguish.
3. The control device for a gas valve according to claim 1, wherein the second input terminal is further configured to receive a firing signal generated by the main fire control switch being actuated by a user; before the time counted by the controller reaches the preset time, after the second input terminal receives the firing signal, the controller stops counting the time and outputs the first voltage to the first output terminal.
4. A gas valve, comprising:
a valve body having a main fire gas passage and a pilot fire gas passage;
the main fire electromagnetic valve is arranged on the valve body and used for receiving a first voltage to open the main fire gas channel, and after the first voltage is relieved, the main fire electromagnetic valve closes the main fire gas channel;
the pilot fire electromagnetic valve is arranged on the valve body and used for receiving a second voltage to open the pilot fire gas channel, and after the second voltage is relieved, the pilot fire electromagnetic valve closes the pilot fire gas channel;
the method is characterized in that: also included is a control device, the control device comprising:
a first input terminal for connecting a thermocouple to receive a voltage generated by the thermocouple;
a second input terminal for connecting a main fire control switch to receive a fire-off signal generated by the main fire control switch being triggered by a user;
the controller is electrically connected with the main fire electromagnetic valve, the first input terminal and the second input terminal; when the voltage received by the first input terminal is greater than a preset voltage, the controller outputs the second voltage to the main fire electromagnetic valve and outputs the first voltage to the main fire electromagnetic valve; and after the controller receives the fire-off signal at the second input terminal, the controller stops outputting the first voltage to the main fire electromagnetic valve, starts timing, and stops outputting the second voltage to the main fire electromagnetic valve when the timed time reaches a preset time.
5. A gas valve according to claim 4, wherein the control means is incorporated on the valve body.
6. The gas valve according to claim 4, wherein the control device further comprises a pilot light electrically connected to the controller, and the controller controls the pilot light to be turned on when outputting the second voltage to the pilot solenoid valve; and the controller controls the pilot lamp to be turned off when the timed time reaches the preset time.
7. The gas valve of claim 4, wherein the second input terminal is further configured to receive a firing signal generated by the actuation of the main fire control switch by a user; before the time timed by the controller does not reach the preset time, after the second input terminal receives the firing signal, the controller stops timing and outputs the first voltage to the main firing electromagnetic valve.
8. A control method of a gas valve, wherein the gas valve comprises a valve body, a main fire electromagnetic valve and a main fire electromagnetic valve, the valve body is provided with a main fire gas channel and a main fire gas channel, the main fire electromagnetic valve is arranged on the valve body and used for receiving a first voltage to open the main fire gas channel, and after the first voltage is relieved, the main fire electromagnetic valve closes the main fire gas channel; the pilot fire electromagnetic valve is arranged on the valve body and used for receiving a second voltage to open the pilot fire gas channel, and after the second voltage is relieved, the pilot fire electromagnetic valve closes the pilot fire gas channel; the control method is executed by a controller and comprises the following steps:
the controller receives a voltage generated by a thermocouple, and outputs the second voltage and the first voltage when the voltage generated by the thermocouple is greater than a preset voltage;
the controller stops outputting the first voltage after receiving a fire-off signal generated by a main fire control switch triggered by a user, starts timing, and stops outputting the second voltage when the timed time reaches a preset time.
9. The control method of a gas valve according to claim 8, wherein a pilot light is controlled to be turned on while the second voltage is outputted; and when the timed time reaches the preset time, controlling the pilot lamp of the main fire to be extinguished.
10. The control method of a gas valve according to claim 9, further comprising stopping timing and outputting the first voltage after receiving a firing signal generated by a user activating the pilot fire control switch before the timed time reaches the predetermined time.
11. The control method of a gas valve according to claim 9, wherein the control method further comprises: before the controller receives the voltage of the thermocouple, the controller uses the power supplied by a power supply and outputs the second voltage; after the voltage generated by the thermocouple is greater than the predetermined voltage, the controller uses the power of the thermocouple to output the second voltage and the first voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910316376.6A CN111828705B (en) | 2019-04-19 | 2019-04-19 | Gas valve and control device and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910316376.6A CN111828705B (en) | 2019-04-19 | 2019-04-19 | Gas valve and control device and control method thereof |
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| Publication Number | Publication Date |
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| CN111828705A CN111828705A (en) | 2020-10-27 |
| CN111828705B true CN111828705B (en) | 2022-05-06 |
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| TW201009267A (en) * | 2009-10-06 | 2010-03-01 | wen-teng Xu | Gas stove structure |
| CN107388298B (en) * | 2017-09-13 | 2023-09-01 | 广东万家乐燃气具有限公司 | Gas stove and double flameout control method |
| CN207778506U (en) * | 2018-01-30 | 2018-08-28 | 广东万家乐厨房科技有限公司 | Gas-cooker and combustion system |
| CN108561902A (en) * | 2018-05-16 | 2018-09-21 | 孙涵柠 | SCM Based intelligent power saving gas-cooker and its control method |
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