CN104344046A - Cooker and gas valve control device thereof - Google Patents
Cooker and gas valve control device thereof Download PDFInfo
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- CN104344046A CN104344046A CN201310336007.6A CN201310336007A CN104344046A CN 104344046 A CN104344046 A CN 104344046A CN 201310336007 A CN201310336007 A CN 201310336007A CN 104344046 A CN104344046 A CN 104344046A
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- switch
- control circuit
- gas valve
- control
- triode
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Classifications
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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
- 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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/0041—Electrical or magnetic means for measuring valve parameters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention provides a cooker and a gas valve control device thereof. The gas valve control device comprises a controller and at least two control circuits, wherein each control circuit comprises at least two switches connected in parallel; the controller is used for outputting a control signal to each control circuit, so all the switches are turned on; when at least one switch in each control circuit is normally opened, a gas valve is opened by the gas valve control device. According to the cooker and the gas valve control device which are provided by the invention, the reliability of the cooker can be improved.
Description
[technical field]
The present invention relates to a kind of kitchen range field, particularly a kind of gas valve control gear.
[background technique]
Along with popularizing of household gas range, the safety in utilization of household gas range also comes into one's own day by day.Existing gas cooker all includes flame-out protection device, in the using process of gas cooker, when flame runs into the fortuitous event such as wind or boiling water spilling and extinguishes, automatically cuts off a kind of device of combustion gas.The application of flame-out protection device drastically increases the safety in utilization of gas cooker, and what use was commonplace at present is thermoelectric (al) type flame-out protection device.Its structure is installed in plug valve of gas stove gas circuit structure by gas valve, and have a thermocouple to be connected with gas valve, and the temperature sensing parts of thermocouple are arranged on the fire hole position of burner.Its working principle presses down stopcock rotating shaft and after spool of outwarding winding as operator, gas valve backs down by the push rod be arranged in stopcock, now combustion gas gas circuit is connected, burner flame is lighted, the temperature sensibility of thermocouple detects that temperature rises, its voltage be applied on gas valve also rises thereupon, and finally reaches the state that gas valve can be made to be held open, now operator can unclamp stopcock rotating shaft make push rod depart from gas valve.When flame surprisingly extinguishes, thermocouple can't detect heat energy, thus it cannot produce the voltage that can keep gas valve opening state, thus gas valve is automatically closed and cuts off combustion gas gas circuit.
But; thermocouple is heated by the flame and produces enough electric currents gas valve to be held the needs time of 3 ~ 5 seconds; therefore operator needs a period of time just can loose one's grip to ensure the normal startup of flame-out protection device after stopcock under pressing, thus brings inconvenience to operator.U.S. Patent Bulletin US6,698,417 disclose a kind of gas valve opens state holding device, this device comprises the electronic switch and timer that are electrically connected with gas valve, when the knob of stopcock is pressed, timer is triggered and starts timing, timer closes the state that electronic switch makes it be held open to make to have certain electric current to pass through in gas valve simultaneously, that is, after knob is pressed, gas valve is opened immediately and is kept automatic opening state and do not need user's Continued depression stopcock again, thus brings facility to the use of user.In addition, for avoiding igniter not light burner, timer can automatically disconnect electronic switch and gas valve be closed automatically after the complete special time period of timing, thus avoids gas leakage.But, adopt and still can there is potential safety hazard in this way, such as, when any one in timer and electronic switch breaks down, and burner is not when being lighted smoothly, gas valve like this can keep the state of a direct-open, thus may cause gas leakage and and then jeopardize personal safety.
In addition, electronic switch is once be damaged, and gas valve control gear just cannot normally work, and makes troubles to user.
In view of this, be necessary to be improved the gas valve control gear of existing gas cooker, to reduce or to avoid the generation of the security incident caused because of components and parts fault as far as possible.In addition, be also necessary the working life of improving electronic switch, and then improve the reliability of gas valve control gear.
[summary of the invention]
In view of this, the present invention is directed to kitchen range and gas valve control gear thereof, propose new improvement.
Concrete technological scheme is as follows:
For a gas valve control gear for kitchen range, it is for controlling gas valve,
Described gas valve control gear comprises controller and control circuit, and described control circuit comprises at least two switches in parallel;
Described controller, for exporting control signal to described control circuit and then opening described each switch;
When there being at least one switch normally to be opened in described control circuit, described gas valve opened by described gas valve control gear.
According to the present invention one preferred implementation, the quantity of described control circuit is at least two;
Only have when there being at least one switch normally to be opened in each control circuit respectively, described gas valve opened by described gas valve control gear.Here need to be explained, although each " control circuit " is all called as " control circuit ", and all " comprise at least two in parallel switch "; But this must not mean that each " control circuit " is necessarily identical, in fact, can be identical, also can be different.
According to the present invention one preferred implementation, at least one control circuit comprises watchdog unit or control unit;
Described watchdog unit or control unit, for after the control signal receiving the output of described controller, open each switch in same control circuit.
According to the present invention one preferred implementation, described switch is switch triode; Or,
Described switch is the relay controlled by switch triode.
According to the present invention one preferred implementation, when described switch is switch triode,
In same control circuit, the common end of the base stage of each switch triode connects described watchdog unit or control unit;
In first control circuit, the collector electrode of each switch triode all connects power supply, in first control circuit, the emitter of each switch triode all connects the common end of the collector electrode of each switch triode in next control circuit, and in last control circuit, the emitter of each switch triode all connects the output terminal of described gas valve control gear.
According to the present invention one preferred implementation, described gas valve control gear comprises the control circuit of more than three, in middle each control circuit, the collector electrode of each switch triode all connects the common end of the emitter of each switching tube triode in a control circuit, and in middle each control circuit, emitter all connects the common end of the collector electrode of each switching tube triode in next control circuit.
First control circuit, next control circuit, last control circuit, middle each control circuit, a upper control circuit, middle control circuit etc. are when gas valve control gear exists two or more control circuit herein, in order to distinguish each control circuit, represent each control circuit with position relationship spatially.
According to the present invention one preferred implementation, when described switch is the relay of switch triode control,
In same control circuit, the common end of the base stage of each switch triode connects described watchdog unit or control unit;
The collector electrode of each switch triode connects power supply, the equal ground connection of emitter of each switch Saunas office by the induction mechanism of described relay;
In first control circuit, actuator one end of each relay connects power supply, the other end connects one end of different actuator in next control circuit respectively, and in last control circuit, one end of the actuator of each relay connects the output terminal of described gas valve control gear.
According to the present invention one preferred implementation, described gas valve control gear comprises more than three control circuits, and in the control circuit of centre, the actuator of each relay is adjacent actuators different in control circuit respectively and connects in turn.
According to the present invention one preferred implementation, at least one control circuit comprises state feedback unit;
Described state feedback unit, for monitoring the state of the switch in same control circuit, and feeds back to described controller by monitored results.
According to the present invention one preferred implementation, described controller, time also for determining according to described monitored results the switch that there is abnormal state, turns off the control signal exported.
According to the present invention one preferred implementation, comprise N group switch at least one control circuit, described N group switch corresponds respectively to N number of burner of described kitchen range, and described N is positive integer;
At least two switches in parallel described in each group switch comprises.
A kind of kitchen range, it is provided with above-mentioned arbitrary gas valve control gear.
As can be seen from the above technical solutions, at least two switches in parallel are provided with in control circuit in the present invention, even if one of them or a part of switch break down, other the switch do not broken down still normally can be opened under the control signal of controller, and then gas valve is opened, improve the reliability of gas valve.In addition, the control circuit of plural serial stage is set, the Security that gas valve controls can be improved to a certain extent.
[accompanying drawing explanation]
The structural drawing of the gas valve control gear that Fig. 1 provides for the embodiment of the present invention one;
An instance graph of the gas valve control gear that Fig. 2 provides for the embodiment of the present invention two;
An instance graph of the gas valve control gear that Fig. 3 provides for the embodiment of the present invention three;
Fig. 4 is gas valve control gear structural drawing when kitchen range that the embodiment of the present invention four provides comprise multiple burner.
Reference character is:
Controller 0 control circuit 1 switch 2
Watchdog unit 4 control unit 5 feedback unit 6
Flow-restriction 7 single-chip microcomputer 01 resistance 51,52,91,92
Switch triode 21,21 ', 22,22 ', 23,23 ', 53,53 ', 54,54 ', 55,55 '
Relay 24,24 ', 25,25 ', 26,26 '
Current-limiting resistance 71 self-priming valve 8 loop 61,62
[embodiment]
In order to make the object, technical solutions and advantages of the present invention clearly, describe the present invention below in conjunction with the drawings and specific embodiments.
Embodiment one,
The structural drawing of the gas valve control gear that Fig. 1 provides for the embodiment of the present invention one, this gas valve control gear is arranged in kitchen range usually, such as be arranged in gas range, also can be set to the device independent of kitchen range, as shown in Figure 1, gas valve control gear mainly comprises controller 0 and control circuit 1, the quantity of this control circuit 1 can be 1, also can be more than 2, in the present embodiment for three control circuits, be respectively: control circuit a, control circuit b and control circuit c.At least two switches 2 in parallel are included in each control circuit 1, two switches are comprised in the present embodiment for each control circuit, control circuit a comprises switch a in parallel and switch a ', control circuit b comprises switch b in parallel and switch b ', control circuit c comprise switch c in parallel and switch c '.
Its middle controller 0 can be but be not limited to the microcontroller such as single-chip microcomputer, DSP.
The core realizing gas valve control is: controller 0 exports control signal respectively to each control circuit 1 and then opens each switch 2, and when having at least one switch normally to be opened in each control circuit 1, gas valve opened by gas valve control gear.
In FIG, controller 0 exports control signal respectively to control circuit a, control circuit b and control circuit c, control switch a, a respectively ', switch b, b ' and switch c, c ' open, when having at least one normally to be opened in switch a and switch a ', when having at least one normally to be opened in switch b and switch b ' and have at least one normally to be opened in switch c and switch c ', gas valve opened by gas valve control gear.
When gas valve control gear comprises the control circuit of more than 2, the formation of each control circuit can be identical, also can be different, is not all example is below described with the formation of control circuit.
More preferably, in control circuit 1, one of them control circuit comprises watchdog unit 4, comprise watchdog unit 4 for control circuit a in Fig. 1, watchdog unit 4 receives the control signal that controller 0 exports, and outputs control signals to switch a and switch a '.Output error control signal when the setting of watchdog unit 4 is to prevent controller 0 race from flying.When opening for control gas valve, controller 0 exports square signal to watchdog unit 4, and watchdog unit 4 exports high level to switch a, and now switch a and switch a ' is opened.If be subject to controller 0 interference of such as external electromagnetic field or program make a mistake etc., reason causes program fleet, then watchdog unit 4 just exports reset signal to controller 0, and controller 0 is resetted.
In addition, in control circuit 1, one of them control circuit comprises control unit 5, and comprise control unit for control circuit b and control circuit c in FIG, control circuit b comprises control unit b, and control circuit c comprises control unit c.Control unit b receives the control signal that controller 0 exports, and outputs control signals to switch b and switch b ', and control unit c receives the control signal that controller 0 exports, and outputs control signals to switch c and switch c '.
If opened for controlling gas valve, then controller 0 exports the control signal of control unit 5 to is high level, and the control signal that control unit 5 exports is high level.In FIG, controller 0 exports high level and exports high level to switch b and b ' to control unit b and control unit c, control unit b, and switch b and b ' is opened, control unit c exports high level to switch c and switch c ', and switch c and switch c ' is opened.
If have at least one normally to be opened in switch a and switch a ', have at least one normally to be opened in switch b and switch b ' and have at least one normally to be opened in switch c and switch c ', then control circuit 1 entirety output control signal is opened to control gas valve.Be equivalent to two switches redundancy each other in parallel, even if one of them breaks down, another one also can ensure that whole gas valve control gear normally works.
Preferably, in this gas valve control gear, also comprise flow-restriction 7, flow-restriction 7 reception control circuit 1 entirety export control signal, and output control signals to gas valve thus control gas valve open.The effect of flow-restriction 7 mainly control flow check, to the electric current of gas valve, avoids that electric current is excessive to cause damage to gas valve.
In addition, in order to further promote the Security of gas valve control gear, one of them control circuit 1 comprises state feedback unit 6, and state feedback unit 6 is responsible for the state of each switch 2 of monitoring in same control circuit 1, and monitored results is fed back to controller 0.In FIG to comprise state feedback unit b and state feedback unit c respectively in control circuit b and control circuit c, the state of state feedback unit b pilot switch b and switch b ', and monitored results is fed back to controller 0, the state of state feedback unit c pilot switch c and switch c ', and monitored results is fed back to controller 0.Exist extremely once monitored results is switch, then controller 0 turns off the control signal exported.
Embodiment two,
An instance graph of the gas valve control gear that Fig. 2 provides for the embodiment of the present invention two, as shown in Figure 2, in this example, controller adopts single-chip microcomputer 01, resistance 51 and resistance 52 are the control unit wherein in two-way control circuit, switch triode 21 and 21 ' is two switches in parallel in first via control circuit, switch triode 22 and 22 ' is two switches in parallel in No. second control circuit, switch triode 23 and 23 ' is two switches in parallel in No. three control circuit, flow-restriction adopts current-limiting resistance 71, from the common end of switch triode 22 and 22 ' emitter, the common end of switch triode 23 and 23 ' emitter is connected to the loop 61 of single-chip microcomputer 01 and loop 62 is state feedback unit, gas valve adopts self-priming valve 8 in this example.
House dog 4, resistance 51 are connected single-chip microcomputer with resistance 52 one end, the other end is connected to the base stage common end of two switch triodes in same control circuit, namely house dog 4 connecting valve triode 21 and 21 ' base stage common end, resistance 51 connecting valve triode 22 and 22 ' base stage common end, resistance 52 connecting valve triode 23 and 23 ' base stage common end.Switch triode 21 with 21 ' collector electrode be all connected with power supply, switch triode 21 with 21 ' emitter be all connected with the collector electrode common end of switch triode 22 and 22 ', switch triode 22 with 22 ' emitter be all connected with the collector electrode common end of switch triode 23 and 23 ', switch triode 23 with 23 ' emitter be all connected with current-limiting resistance 71.
Under normal circumstances, when gas valve off state, single-chip microcomputer turns off control signal, and each switch triode is all in off state, and no current flows through self-priming valve 8, and self-priming valve 8 is also in off state.
When opening self-priming valve 8, single-chip microcomputer 01 exports square signal to house dog 4, and exports high level respectively to resistance 51 and resistance 52.House dog 4 export high level to switch triode 21 and 21 ' base stage, switch triode 22 and 22 ', switch triode 23 and 23 ' base stage be also high level, now switch triode 21 and 21 ', switch triode 22 and 22 ', switch triode 23 and 23 ' are all opened, if it is normal all at least to there is a switch triode in the control circuit of each road, then have electric current to flow through electric current that current-limiting resistance 71(exports to current-limiting resistance 71 is that the entirety of No. three control circuits exports) to self-priming valve 8, thus open self-priming valve 8.That is, only have single-chip microcomputer 01 switch triode simultaneously controlled in No. three control circuits to open and in No. three control circuits all at least exist a switch triode normal time, self-priming valve 8 just can be opened.
Puncturing of a switch triode can not cause gas valve to mislead on the one hand, there is higher Security, on the other hand, in control circuit, have a switch to break down, another switch still can ensure the normal work of gas valve control gear, has higher reliability.
Loop 61 for pilot switch triode 22 and 22 ' state, and the level of emitter, loop 62 for pilot switch triode 23 and 23 ' state, i.e. the level of its emitter.For the anomaly detected under self-priming valve 8 off state, such as under self-priming valve 8 off state, normal situation should be switch triode 22 and 22 ', and switch triode 23 and 23 ' transmitting very low level, once switch triode 22,22 ', switch triode 23,23 ' occurs abnormal, such as there is punch-through, then abnormal level condition can be detected, such as detect that level value is higher than a threshold value, level condition can feed back to single-chip microcomputer 01, and now single-chip microcomputer 01 occurs in order to avoid problem, can keep turning off the control signal exported.
For the anomaly detected under self-priming valve 8 open mode, such as under self-priming valve 8 open mode, normal condition should be the emitter of switch triode 22 and 22 ', and switch triode 23 and 23 ' emitter level in a normal range (NR), once there is abnormal switch triode, may detect that the emitter level of abnormal switch triode exceeds normal range (NR), now single-chip microcomputer 01 occurs in order to avoid problem, turns off the control signal of output immediately.
Embodiment three,
An instance graph of the gas valve control gear that Fig. 3 provides for the embodiment of the present invention three, as shown in Figure 3, switch adopts the relay controlled by switch triode in this embodiment, similar in the basic and embodiment two of other unit.Wherein comprise house dog 4 in first via control circuit simultaneously, the switch triode 53 be connected with house dog 4 and 53 ' (common end of its base stage is connected with house dog 4), switch triode 53 and relay 24 form a switch in first via control circuit, and switch triode 53 ' and relay 24 ' form another switch in No. second control circuit.
Single-chip microcomputer 01 exports control signal to resistance 91, resistance 91 export control signal to switch triode 54 and 54 ' the common end of base stage.Switch triode 54 and relay 25 form a switch of No. second control circuit, and switch triode 54 ' and relay 25 ' form another switch in No. second control circuit.
Single-chip microcomputer 01 exports control signal to resistance 92, resistance 92 export control signal to switch triode 55 and 55 ' the common end of base stage.Switch triode 55 and relay 26 form a switch in No. three control circuit, and switch triode 55 ' and relay 26 ' form another switch in No. three control circuit.
Loop 61 and loop 62 are the state feedback unit in No. second control circuit and No. three control circuit respectively.Flow-restriction adopts current-limiting resistance 71, and gas valve adopts self-priming valve 8 equally in this example.
Wherein, switch triode 53, switch triode 53 ', switch triode 54, switch triode 54 ', switch triode 55 are connected power supply respectively by relay 24, relay 24 ', relay 25, relay 25 ', relay 26 with the induction mechanism of relay 26 ' with the collector electrode of switch triode 55 ', the equal ground connection of emitter.Relay 24 with 24 ' actuator one end be all connected power supply, the other end connects one end of actuator of relay 25 and 25 ' respectively, the other end of the actuator of relay 25 connects one end of relay 26, and the other end of the actuator of relay 25 ' connects one end of relay 26 '.Relay 26 with 26 ' actuator's the other end be connected current-limiting resistance 71.
Under normal circumstances, when gas valve off state, single-chip microcomputer turns off control signal, switch triode 53,53 ', 54,54 ', 55 and 55 ' is all in off state, no current flows through the induction mechanism of relay 24,24 ', 25,25 ', 26 and 26 ', the actuator of relay 24,24 ', 25,25 ', 26 and 26 ' is in off state, and no current flows through self-priming valve 8, and self-priming valve 8 is also in off state.
When opening self-priming valve 8, single-chip microcomputer 01 exports square signal to house dog 4, and exports high level respectively to resistance 91 and resistance 92.House dog 4 export high level to switch triode 54 and 54 ' base stage, switch triode 55 and 55 ' base stage and switching tube 56 and 56 ' base stage be also high level, now switch triode 54,53 ', 54,54 ', 55 and 55 ' is all opened, have electric current to flow through the induction mechanism of relay 24,24 ', 25,25 ', 26 and 26 ', the actuator of relay 24,24 ', 25,25 ', 26 and 26 ' is in closed state.At least there is a switch in each road control circuit normally to work, flowing through electric current that current-limiting resistance 71(exports to current-limiting resistance 71 with regard to there being electric current is that the entirety of No. three control circuits exports) to self-priming valve 8, thus open self-priming valve 8.
Loop 61 for verification relay 25 and 25 ' the state of actuator, loop 62 for verification relay 26 and 26 ' the state of actuator, i.e. level.For the anomaly detected under self-priming valve 8 off state, such as under self-priming valve 8 off state, normal situation should be relay 25 and 25 ', relay 26 and 26 ' actuator lower end (referring to the lower end shown in figure) be low level, once switch triode 54 or 54 ', switch triode 55 or 55 ' occur extremely, such as there is punch-through, then abnormal level condition can be detected, such as detect that level value is higher than a threshold value, level condition can feed back to single-chip microcomputer 01, now single-chip microcomputer 01 is in order to avoid problem generation, keep turning off the control signal exported.
For the anomaly detected under self-priming valve 8 open mode, such as under self-priming valve 8 open mode, normal situation should be relay 25 and 25 ', relay 26 and 26 ' actuator lower end (referring to the lower end shown in figure) be the high level within the scope of certain, once switch triode 54 or 54 ', switch triode 55 or 55 ' occur extremely, then may cause relay 25 and 25 ' respectively, relay 26 and 26 ' the level of actuator lower end exceed normal range (NR), then think and abnormal level condition detected, now single-chip microcomputer 01 turns off the control signal of output immediately.
Visible, puncturing of a switching tube can not cause gas valve to mislead on the one hand, has higher Security, on the other hand, in control circuit, have a switch to break down, another switch still can ensure the normal work of gas valve control gear, has higher reliability.
Embodiment four,
The present embodiment is mainly for the situation comprising many burners in kitchen range, if kitchen range comprise N eye burner, so comprise N group switch in one of them control circuit, each group switch comprises at least two switches in parallel, this N group switch corresponds respectively to N number of burner of kitchen range, and N is positive integer.In the present embodiment for two burners, attainable gas valve control gear as shown in Figure 4.
With in embodiment one unlike, in No. three control circuit and control circuit c, comprise two groups of switches, be also relation in parallel between these two groups of switches, first group of switch is made up of switch c and c ' of parallel connection, and second group of switch is made up of switch d and d ' of parallel connection.In control circuit c, comprise two control units, i.e. control unit c and control unit c ', wherein control unit c transfer control signal to the first group switch, control unit c ' transfer control signal to the second group switch, wherein first group of switch is connected different burners with second group of switch, as long as there is a burner to open, whole gas valve control gear just can be made to output control signals to gas valve, gas valve is opened.
In several embodiment provided by the present invention, should be understood that, disclosed device, can realize by another way.Such as, device embodiment described above is only schematic, and such as, the division of described unit, is only a kind of logical function and divides, and actual can have other dividing mode when realizing.The described unit illustrated as separating component or can may not be and physically separates, and some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (12)
1., for a gas valve control gear for kitchen range, it, for controlling gas valve, is characterized in that,
Described gas valve control gear comprises controller (0) and control circuit (1), and described control circuit (1) comprises at least two switches (2) in parallel;
Described controller (0), for exporting control signal to described control circuit (1) and then opening described each switch (2);
When there being at least one switch (2) normally to be opened in described control circuit (1), described gas valve opened by described gas valve control gear.
2. gas valve control gear according to claim 1, is characterized in that,
The quantity of described control circuit (1) is at least two;
Only have when there being at least one switch (2) normally to be opened in each control circuit (1) respectively, described gas valve opened by described gas valve control gear.
3. gas valve control gear according to claim 1 and 2, is characterized in that,
At least one control circuit (1) comprises watchdog unit (4) or control unit (5);
Described watchdog unit (4) or control unit (5), for after receiving the control signal that described controller (0) exports, open each switch (2) in same control circuit (1).
4. gas valve control gear according to claim 3, is characterized in that,
Described switch (2) is switch triode; Or,
Described switch (2) is the relay controlled by switch triode.
5. gas valve control gear according to claim 4, is characterized in that, when described switch (2) is for switch triode,
In same control circuit, the common end of the base stage of each switch triode connects described watchdog unit (4) or control unit (5);
In first control circuit, the collector electrode of each switch triode all connects power supply, in first control circuit, the emitter of each switch triode all connects the common end of the collector electrode of each switch triode in next control circuit, and in last control circuit, the emitter of each switch triode all connects the output terminal of described gas valve control gear.
6. gas valve control gear according to claim 5, it is characterized in that, described gas valve control gear comprises the control circuit of more than three, in middle each control circuit, the collector electrode of each switch triode all connects the common end of the emitter of each switching tube triode in a control circuit, and in middle each control circuit, emitter all connects the common end of the collector electrode of each switching tube triode in next control circuit.
7. gas valve control gear according to claim 4, is characterized in that, when the relay that described switch (2) controls for switch triode,
In same control circuit, the common end of the base stage of each switch triode connects described watchdog unit (4) or control unit (5);
The collector electrode of each switch triode connects power supply, the equal ground connection of emitter of each switch triode by the induction mechanism of described relay;
In first control circuit, actuator one end of each relay connects power supply, the other end connects one end of different actuator in next control circuit respectively, and in last control circuit, one end of the actuator of each relay connects the output terminal of described gas valve control gear.
8. gas valve control gear according to claim 7, it is characterized in that, described gas valve control gear comprises more than three control circuits, and in the control circuit of centre, the actuator of each relay is adjacent actuators different in control circuit respectively and connects in turn.
9. gas valve control gear according to claim 1 and 2, is characterized in that, at least one control circuit (1) comprises state feedback unit (6);
Described state feedback unit (6), for the state of the switch (2) of monitoring in same control circuit (1), and feeds back to described controller (0) by monitored results.
10. gas valve control gear according to claim 9, is characterized in that, described controller (0), time also for determining according to described monitored results the switch that there is abnormal state, turns off the control signal exported.
11. gas valve control gear according to claim 1 and 2, is characterized in that,
Comprise N group switch at least one control circuit (1), described N group switch corresponds respectively to N number of burner of described kitchen range, and described N is positive integer;
At least two switches (2) in parallel described in each group switch comprises.
12. 1 kinds of kitchen range, it is provided with the gas valve control gear as described in claim as arbitrary in claim 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310336007.6A CN104344046A (en) | 2013-08-02 | 2013-08-02 | Cooker and gas valve control device thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310336007.6A CN104344046A (en) | 2013-08-02 | 2013-08-02 | Cooker and gas valve control device thereof |
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- 2013-08-02 CN CN201310336007.6A patent/CN104344046A/en active Pending
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Application publication date: 20150211 |