CN100549479C - The air valve shutoff device - Google Patents
The air valve shutoff device Download PDFInfo
- Publication number
- CN100549479C CN100549479C CNB2006101385539A CN200610138553A CN100549479C CN 100549479 C CN100549479 C CN 100549479C CN B2006101385539 A CNB2006101385539 A CN B2006101385539A CN 200610138553 A CN200610138553 A CN 200610138553A CN 100549479 C CN100549479 C CN 100549479C
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- Prior art keywords
- control unit
- air valve
- signal
- driver element
- operating handle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
- G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/06—Control of flow characterised by the use of electric means
- G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
- G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
- G05D7/0635—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on throttling means
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Automation & Control Theory (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Acoustics & Sound (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
A kind of air valve shutoff device, described device comprises: the air-flow detection unit is used to detect the throughput on the described fuel gas supply passage; Control unit is used for determining according to input signal the shut-in time of described air valve, and produces shutdown signal to close described air valve, and described input signal is represented the throughput that described air-flow detection unit detects and transmits; And driver element, be used for according to closing described air valve from the shutdown signal of described control unit.
Description
Technical field
The present invention relates to a kind of air valve shutoff device; More specifically, relate to a kind of air valve that can the automatic disconnection fuel gas flow, take place to prevent gas accidents.
Background technique
Gas range, gas cooker or gas fired boiler cook food or heating are often adopted in management places such as family or restaurant at present.Gas appliance adopts liquefied petroleum gas (LPG) (LPG) or LNG Liquefied natural gas (LNG) usually.
Gas appliance is connected with outdoor gas can or the equipment that is provided by gas supply manufacturer by gas pipeline, and receives combustion gas.Be the flow of control by gas pipeline, the pre-position between gas appliance and gas can is provided with air valve.If combustion gas then can initiation potential by gas can or fuel gas pipeline leakage.Gas leakage may cause serious consequence, even may blast.Therefore, must take measures to take precautions against as possible gas appliance danger.In Korea S's legal provisions air valve must be installed.Air valve allows the user to open or close air-flow path, thereby avoids accident to take place.
When the user used gas appliance culinary art or heating, the user at first opened air valve, is the gas appliance air feed.After this, the user is by twisting gas appliance igniter, and combustion gas is lighted in sparking.After gas appliance was finished using, the gas appliance igniter was closed in user's twisting, closes gas check valve, disconnects the air-flow that leads to gas appliance.As mentioned above, before and after gas appliance used, opening or closing of air valve must manually be carried out by the user, and this Air Valve Control mode makes the user feel trouble.Therefore, the normal use of user only need be controlled the air valve of fire maker, and air valve remains opening state.Because air valve keeps normally open when the user gos out, the possibility that then has an accident is bigger.That is, air valve commonly used at present, for example mechanical cock-type air valve is applied to then do not possess enough Securities in the gas appliance.
For overcoming the problems referred to above of traditional air valve, introduce automatic air valve with timer.Automatic air valve can close gas check valve automatically in the time that the user sets.Automatic air valve comprises motor, cam and the eccentric disc that is provided with around knob.Connect timer at this place.The user sets the time that air valve is closed by timer, and automatic air valve will respond to timer, close gas check valve automatically.
But, the automatic air valve with timer also and inconvenient because the user must be provided with timer when using at every turn.If user's set time is too short for culinary art, then the user must frequently prolong the time of timer, must reopen air valve when perhaps cooking.If user's set time is oversize, then weaken the effect that it prevents that gas accidents from taking place.Therefore, be necessary to develop air valve, when the unexpected maintenance of user valve is opened, can realize the shortest air valve service time, and can not bring influence the user with desirable security feature.
Summary of the invention
One of the object of the invention is to provide a kind of air valve shutoff device, use combustion gas timer time setting operation before by cancellation, when gas appliance uses, reduce the delay operation of timer as far as possible, and can allow the user to use gas appliance easily and do not need the significant care air valve.
Another purpose of the present invention is to provide the air valve shutoff device, disconnects air valve within tens of seconds after using combustion gas or several seconds, to guarantee user's safety.
Still a further object of the present invention is to provide the air valve shutoff device, when the unexpected maintenance of user valve is opened, promptly closes gas check valve after the safe service time that surpasses user's setting, unless the user uses when wishing length or the user can regulate this device.
Another object of the present invention is to provide the air valve shutoff device, can be detected gas leakage and temperature.
The another again purpose of the present invention is to provide the air valve shutoff device, when air valve is opened and only used the low energy consumption solenoid valve, can electricity consumption at utmost prolongs battery working life.
According to an aspect of the present invention, the air valve shutoff device is installed on the fuel gas supply passage of gas appliance, this device comprises: the air-flow detection unit is used to detect the throughput on the described fuel gas supply passage; Control unit is used for determining according to input signal the shut-in time of described air valve, and produces shutdown signal to close described air valve, and described input signal is represented the throughput that described air-flow detection unit detects and transmits; And driver element, be used for according to closing described air valve from the shutdown signal of described control unit.
The air-flow detection unit can comprise: pipeline, and it is arranged on the described fuel gas supply passage, around described air valve, and has uneven cross sectional area; And sensor, it connects into and described control unit exchange signal, and has at least two pressure tappings to measure the pressure in the inhomogeneous cross sectional area of described pipeline zone.
If through predetermined safe service time, throughput does not change yet, control unit then is sent to driver element with shutdown signal.
Can carry out different set to predetermined safe service time according to the heating power of gas appliance.
Control unit sends alarm signal with the scheduled time, reminding the user before shutdown signal is sent to driver element, and sends shutdown signal when the user does not react at the fixed time.
If the air-flow in the pipeline stops, after the time, control unit can be sent to driver element with shutdown signal at scheduled wait.
Whether control unit can be by comparing and detects combustion gas and leak opening the initial air-flow signal value that records at once behind the air valve and preset reference value, and when detecting gas leakage shutdown signal is sent to driver element together with alarm signal.
Whether the control unit decidable is normal with being connected of sensor, and when connection is unusual shutdown signal is sent to driver element.
This device comprises also and uses setup unit when long that it connects into and can exchange signal with control unit, and is set by the user, wherein, when when long, using setup unit to set by the user, set long the time service time after, control unit then is sent to driver element with shutdown signal.
This device also comprises temperature detecting unit, and it connects into and described control unit exchange signal, is used to detect environment temperature.If the detected temperature of described temperature detecting unit is higher than preset reference temperature, then described control unit is sent to shutdown signal described driver element again after sending alarm signal.
After shutdown signal was sent to driver element, when air valve was not normally closed, control unit produced alarm signal, to remind the user.
Driver element can comprise: operating handle, and it is arranged on the air valve post bolt, in order in the primary importance of closing described air valve with open between the second place of described air valve and rotate; Lever spring, it flexibly is biased into described primary importance with described operating handle; Locking lever, it is positioned at the turning radius of described operating handle, in order to limit described operating handle, makes it not shift to described primary importance from the described second place; Separate lock unit, comprise solenoid valve, when receiving the shutdown signal of described control unit, described locking lever release, thus described operating handle rotates to described primary importance by the described second place; And main body frame, be used to hold described operating handle, lever spring, locking lever reconciliation lock unit, and comprise outer cover.
Separating lock unit can comprise: jacking block is used for locking lever is pushed away the turning radius of operating handle, and has plunger slot, in order to hold the plunger of solenoid valve; With the top spring, with its fexible bias pressure jacking block, wherein, the plunger of solenoid valve inserted the plunger groove before signal is sent to control unit, and with fixing jacking block, and when receiving the signal of control unit, plunger and plunger slot are separated from each other, to remove the constraint to jacking block.
When the second place was shifted to primary importance, an end of operating handle was towards promoting jacking block in the opposite direction with the side that promotes locking lever with operating handle in promotion operation by locking lever, made jacking block turn back to initial position before receiving the signal of control unit.
Driver element also can comprise latch, and the one end links to each other with locking lever, and the other end is exposed to outside the outer cover of main body frame.
Described device also can comprise fixed unit, is connected with main body frame and air valve with driver element.
Described device also can comprise power supply, links to each other with control unit and exchanges signal, is used to control unit, sensor and driver element power supply.
Power supply can comprise box body, links to each other with the detachable groove of fixed unit, can carry out dismounting, and can be along moving freely on the direction, and battery then inserts in the box body.
This control unit can be judged battery life by detecting cell voltage, and at detection battery voltage value judgement battery end of life during less than predefined value.
Description of drawings
For better understanding above-mentioned and other purposes and feature of the present invention, below in conjunction with accompanying drawing following preferred embodiment is described, wherein:
Figure 1 shows that the perspective view of air valve shutoff device according to an exemplary embodiment of the present.
Figure 2 shows that perspective exploded view according to the shutoff device of air valve shown in Fig. 1.
Figure 3 shows that the block diagram of air valve shutoff device according to an exemplary embodiment of the present.
Figure 4 shows that the pipeline section figure that analyses and observe gained along the line of IV-IV shown in Fig. 2, wherein said pipe detection unit links to each other.
Figure 5 shows that the flow chart of the controlling method of control unit shown in Fig. 3.
Figure 6 shows that the rear view of operating handle shown in Fig. 2.
Fig. 7 to 10 is depicted as the front elevation of the driver element of air valve shutoff device according to an exemplary embodiment of the present invention.
Figure 11 shows that the front elevation of air valve shutoff device according to an exemplary embodiment of the present invention.
Embodiment
Below with reference to the accompanying drawings exemplary embodiment of the present is elaborated.
Figure 1 shows that the perspective view of air valve shutoff device according to an exemplary embodiment of the present,
Figure 2 shows that perspective exploded view according to the shutoff device of air valve shown in Fig. 1, Figure 3 shows that the block diagram of air valve shutoff device according to an exemplary embodiment of the present, Figure 4 shows that the pipeline section figure that analyses and observe gained along the line of IV-IV shown in Fig. 2, wherein said pipeline links to each other with detection unit.
Referring to Fig. 1 to Fig. 4, comprise air-flow detection unit 101, control unit 140, driver element 200, fixed unit 160 and power supply 170 according to the air valve shutoff device 100 of present embodiment.
Air valve shutoff device 100 according to present embodiment can be installed on by gas can to the fuel gas supply passage of gas appliance (as gas range or the gas cooker of removing traditional air valve knob).A rubber tube can be connected to air valve 110 bottoms, so that fuel gas supply passage to be provided.
Air-flow detection unit 101 comprises pipeline 120 and sensor 130.Referring to Fig. 2, pipeline 120 places between air valve 110 and the fuel gas supply passage.But the present invention is not limited only to this.Pipeline 120 also can place the arbitrary position around the fuel gas supply passage upper air valve 110.According to present embodiment, pipeline 120 links to each other with the bottom of air valve 110 by connecting element 113.But the present invention is not limited only to this, also can form the pipeline 120 in aggregates with air valve 110.Pipeline 120 can have pressure sensor structure or mass flow sensor structure.
Figure 4 shows that pipeline 120 with pressure transducer.As shown in Figure 4, pipeline 120 has uneven cross sectional area in the present embodiment.Pipeline 120 inside comprise the trunnion 121 with cross-sectional area, the extension 122 with maximum cross section area and the mouth 123 that links to each other with extension 122 with trunnion 121.If the cross sectional area of trunnion 121 is too little, then can greatly influence the heating power level of gas appliance.If the cross sectional area of trunnion 121 is too big, what then pressure reduction can become too small and very difficult differentiation gas appliance stops the air feed level and the first heating power level.Therefore, preferably determine the cross sectional area of trunnion 121 according to following situation.
If as sensor 130, then sensor 130 is by detecting air-flow to two measured pressure in position with different interior cross sectional areas with pressure transducer.Sensor 130 links to each other with control unit 140, to exchange signals with control unit 140.In the present embodiment, sensor 130 adopts the MEMS type differential pressure sensor with two pressure tappings (first pressure tappings 131 and second pressure tappings 132).First pressure tappings 131 links to each other with trunnion 121 and measures the pressure of corresponding position.Second pressure tappings 132 links to each other with extension 122 and measures the pressure of corresponding position.Behind the measuring pressure, sensor 130 obtains the poor of measured pressure, and will reflect that the respective signal value of measured pressure difference is sent to control unit 140.Preferred O shape circle or the rubber seal of adopting is connected to pipeline 120 with first and second pressure tappings 131 and 132, and with epoxy resin whole detection unit sealed or molding, to prevent gas leakage.
Because trunnion 121, extension 122 are different with the cross sectional area of mouth 123 pipeline 120 in, although institute's gas supply pressure that applies is identical, it is also inequality that these regional speed are passed through in combustion gas.Therefore, also be not quite similar at trunnion 121, extension 122 and mouth 123 measured pressure.That is, when combustion gas is flowed, between first pressure tappings 131 and second pressure tappings and 132, produce a pure pressure reduction in pipeline 120.Because this pressure reduction and throughput are proportional, then air-flow detection unit 120 can produce the throughput variable signal, and this throughput variable signal is sent to control unit.When in the pipeline 120 during no fuel gas flow, then no matter whether apply gas supply pressure, between first pressure tappings 131 and second pressure tappings 132, can not produce pressure reduction.
Below with reference to Fig. 5 the operation of control unit 140 is described.
When the user opened air valve 110, switch connection gave control unit 140 power supplies.Control unit 140 begins to detect air valve 110 bottoms or whether gas appliance leaks gas.After just opening air valve 110, combustion gas does not flow into gas appliance usually, because gas appliance still is in non-ignited state.If leak gas, although then gas appliance is in non-ignited state, sensor 130 detects air-flow.That is, control unit 140 compares the signal value of initial air-flow (the measured throughput of sensor 130 when just opening air valve 110) with preset reference value (signal value that detection unit was sent when combustion gas was flowed).That is, when combustion gas was not leaked, the signal value that sensor 130 is sent promptly equaled the preset reference value.Therefore, if the signal value that is received equals reference value, then control unit 140 judgement combustion gas are not leaked.Otherwise if received signal value is not equal to reference value, then control unit 140 is judged gas leakage.Thereby control unit 140 sends alarm signal, notifies the user that gas leakage takes place, and control gear 100 closes gas check valve 110.
Passed through stand-by period t2 if combustion gas stops back (promptly after sensor 130 does not detect pressure reduction), then control unit 140 is judged combustion gas not in use.Then, control unit 140 control gear close gas check valve 110.That is, when stopping after gas supply reaches the scheduled time, control unit 140 does not close gas check valve immediately.After having crossed scheduled wait time t2, control unit 140 sends the signal at stop air valve.Preferably stand-by period t2 is made as about 10 seconds or about 30 seconds.When rekindling gas appliance within the stand-by period t2 after the user wishes extinguishing gas appliance, because the user needn't reopen air valve, this just provides more convenience for the user.The power consumption of driver element 200 also can be minimized by reducing the number of times that closes gas check valve, thereby prolongs the battery life of power supply 170.
If combustion gas continue to flow surpasses safe service time t1 and do not change, then control unit 140 sends chimes of doom with the scheduled time or LED shown in Figure 2 is luminous.If the user is not reaction in time of fire alarming t3, then control unit 140 judges that air valve is in unexpected opening state, the concurrent number of delivering letters pass gas check valve 110.Time of fire alarming can be made as about tens seconds to about a few minutes.
If the user changes throughput during safety service time t1 and time of fire alarming t3, for example, control its heating power or open other gas appliances, then control unit 140 does not send signal at stop air valve 110.React if the user changes throughput, then control unit 140 is judged that users change constantly in each gas flow and is all being used combustion gas, and by the airless transformation period being made as the 0 initial baseline point that resets safe service time t1.
Correspondingly, even user's accident makes air valve be in opening state for a long time, after exceeding safe service time t1, control unit 140 also can close gas check valve 110, thus the safety cut-off air-flow.If user's Continuous Drive gas appliance then can detect throughput and change, air valve 110 is controlled continued open-minded.
Safe service time t1 represents to make air valve be in opening state and the maximum duration that can not cause gas accidents to allow.Preferably be made as safe service time t1 short as far as possible.But, if safe service time t1 establishes too shortly, this can make troubles to the user, because check whether air valve is open-minded, no matter whether all may send warning because of accident, the user has to continually alarm signal be reacted.On the contrary, if safe service time t1 establishes oversizely, then can greatly reduce the effect that it prevents gas accidents.Therefore, preferably safe service time t1 is made as about 10 minutes to about 30 minutes.
Preferably according to the heating power different set combustion gas service time t1 of gas appliance.Heating power is strong more, and safe service time t1 establishes shortly more; Heating power is weak more, and safe service time t1 establishes longly more.With the gas range is example, to the first heating power rank of gas range, preferably safe service time t1 is made as about 20 to 30 minutes; To the second heating power rank, safe service time t1 was made as about 15 minutes; To the 3rd heating power rank, or when using two firing units, then safe service time t1 was made as about 10 minutes.As mentioned above, because sensor 130 sends unlike signal according to the throughput in the pipeline 120, control unit 140 decidable heating power ranks, and according to definite time of closing gas check valve 110 of heating power rank.
The user may wish using gas appliance in the long period relatively.At this moment, the user wishes air valve 110 opening states to be kept about 2 to 3 hours intentionally.Close gas check valve 110 if safe service time t1 is made as after the relatively short time, then the user must reopen air valve 110.For overcoming this inconvenience that brings to the user, comprise according to the air valve shutoff device of present embodiment and to use setup unit 190 when long.According to present embodiment, use setup unit 190 when adopting button-type long.Referring to Fig. 2 and Fig. 3, use an end of setup unit 190 to protrude from outside the outer cover 211 when long, the other end links to each other with PCB type control unit 140 and exchanges signal.When the user used setup unit 190 to be provided with when long to carry out long duration to use, control unit 140 can not close gas check valve 110, uses set time t4 to finish when long.After using set time t4 to finish when long, control unit 140 closes gas check valve 110.Function of use when preferably removing length when air valve 110 is closed is reseted safe service time t1 when air valve is opened.
Air valve shutoff device according to present embodiment comprises temperature detecting unit 180, link to each other with control unit 140 and with its exchange signal.According to present embodiment, preferably temperature detecting unit 180 directly is installed on the control unit 140.Usually adopt as calorimeter equitemperature sensor as temperature detecting unit 180.If temperature detecting unit 180 detected temperatures are higher than preset reference temperature, then control unit 140 closes gas check valve 110 behind output alarm signal.As mentioned above, the air valve shutoff device according to present embodiment possesses fire alarm function and air valve closing function.
Signal by checking sensor 130 outputs whether in normal output area or be lower than normal output area, control unit 140 detect between control units 140 and the sensor 130 be connected whether normal.If control unit 140 determine sensors 130 do not connect, then control unit 140 output alarm signals are notified the user, and gas check valve 110 is closed in control.
Refer again to Fig. 2, driver element 200 closes gas check valve 100 according to 140 output signals of control unit.Driver element 200 comprises main body frame 210, operating handle 220, lever spring 221, locking lever 230 reconciliation lock units 240.
The composition member of driver element 200 is supported by main body frame 210.On main body frame 210 and outer cover 211, form through hole 212 and 213, so that the bottom of operating handle 220 and top are passed.
Referring to Fig. 2 and Fig. 6, operating handle 220 is inserted in the post bolt 111 of air valve 110 and is connected with it, and operating handle 220 opens and closes air valve 110.Therefore, operating handle 220 rotates to the second place B shown in Fig. 8 (being open position) by the A of primary importance shown in Fig. 7 (being closed position) along the arrow C direction.Operating handle 220 comprise the knob 222 that forms on the spring cover unit 223 that is positioned at central authorities, the end face, with and the bottom on the ring-type fixed unit 224 that forms.Knob 222 is exposed to the outside by the through hole 213 of outer cover 211.The through hole 212 that fixed unit 224 passes main body frame 210 inserts in the post bolt 111 of air valve 110.Central authorities at fixed unit 224 form slot 225, are used to insert and connect the post bolt 111 of air valve 110.The predefined region of operating handle 220 is cut to taper, to avoid hindering jacking block 250 when operating handle 220 rotates.End at fixed unit 224 forms restrained end 224a.
Locking lever 230 is positioned at the turning radius of operating handle 220, rotates to the A of primary importance shown in Fig. 7 to prevent operating handle 220 by the B of the second place shown in Fig. 8.Locking lever 230 1 ends are connected with the bottom of main body frame 210 by articulated axle 231, and the other end of locking lever 230 is a free end.Hinge spring 232 is positioned at hinge formula axle 231, is supported by main body frame 210, and is elastically biased toward the other end 234 of locking lever 230 towards the introversion of operating handle 220 turning radius.Referring to Fig. 8, when operating handle 220 was positioned at second place B by user's operation, when promptly air valve was in opening state, the other end 234 of locking lever 230 rotated along direction of arrow D by hinge spring 232, and by restrained end 224a stop.Like this, operating handle 220 just is fixed in second place B and suffers restraints and can not home position A.When locking lever 230 by the external force effect during along the opposite spin of arrow D because operating handle 220 loses its effect of contraction, then the elastic force by lever spring 221 rotates to primary importance A with operating handle 220.The other end 234 of locking lever 230 is preferably taper, in case be subjected to the drag effect of operating handle 220 when release.
Separate the unlock effect of contraction of bar 230 of shutdown signal that lock unit 240 sends according to control unit 140, to close gas check valve 110.That is, when separating lock unit 240 and receive the shutdown signal that control unit 140 sends, separate lock unit 240 and make outer direction (the be direction of arrow D) rotation of locking lever 230, thereby make operating handle 220 rotate to primary importance A by second place B along operating handle 220 turning radius.According to present embodiment, separate lock unit 240 and comprise jacking block 250 and solenoid valve 260.
Below with reference to Fig. 7 to Figure 10 the operation according to present embodiment driver element 200 is described.Fig. 7 to Figure 10 is the front elevation of driver element, for simplicity, does not show outer cover 211, the control unit 140 of main body frame 210, the control knob 222 and the lever spring 221 of operating handle 220 among the figure.
Fig. 7 shows the air valve 110 of closed condition.That is, Figure 7 shows that operating handle 220 is at primary importance A place.Fig. 8 shows the air valve 110 of opening state.That is, Figure 8 shows that operating handle 220 is at second place B place.
Referring to Fig. 7, it is closed condition that lever spring 211 keeps operating handle 220.The side of the other end 234 of locking lever 230 contacts with fixed unit 224 peripheries of operating handle 220.When the user rotates about 90 ° when arriving second place B for using gas appliance in the counterclockwise direction with operating handle 220, the other end 234 of the locking lever 230 just cut-out with the fixed unit 224 shown in Fig. 6 is relative.At this moment, locking lever 230 is cut with scissors the elastic force effect of spring 232 and is moved on direction along the interior of operating handle 220 turning radius, and the other end of locking lever 230 is by the restrained end 224a stop of operating handle 220.Thereby operating handle 220 just is fixed in second place B, so that air valve 110 is kept opening state.Because the plunger 261 of solenoid valve 260 inserts in the fixed groove 252 of jacking block 250, jacking block 250 can not move along direction of arrow E.
When receiving the shutdown signal that control unit 140 sends, solenoid valve 260 forces down plunger 261, as shown in Figure 9.Thereby separate with the fixed groove 252 of jacking block 250 on the top of plunger 261.Then, jacking block 250 moves along direction of arrow E by the elastic force effect of top spring 251, and the presser unit 253 of jacking block 250 promotes the projection 233 of locking lever 230 sides.
As shown in figure 10, by jacking block 250 is constantly pressurizeed, locking lever 230 is pushed to the outward direction of operating handle 220 turning radius.So operating handle 220 is subjected to lever spring 221 effects along clockwise direction, i.e. arrow G direction rotation.The final plant closure air valve.Simultaneously, when operating handle 220 rotations, restrained end 224a promotes the live end 254 of jacking block 250.If jacking block 250 is fully mobile backward, then the plunger 261 of solenoid valve 260 is raise along direction of arrow F by piston spring 262 effects, thereby inserts in the fixed groove 252 of jacking block 250.
Although after this air valve 110 is open-minded, that is, although operating handle 220 rotates to second place B, as shown in Figure 8, jacking block 250 does not move forward, until plunger 261 declines of solenoid valve 260.
Finally, separating lock unit 240 is converted to the running torque of operating handle 220 elastic force of top spring 251 and stores its elastic energy.Then, separating lock unit 240 utilizes stored elastic energy to discharge locking lever 230.And solenoid valve 260 need overcome the energy of frictional force of the fixed groove 252 of jacking block 250 just.Thereby, can use the less little solenoid valve of power consumption.That is, this mode is directly used more effective as jacking block 250 than the plunger 261 with solenoid valve 260.That is, more effective than plunger 261 promotion locking levers 230 with solenoid valve 260 with discharging locking lever 230 this modes.
Referring to Fig. 2 and Figure 11, fixed unit 160 is fixing with air valve 110 with driver element 200.Fixed unit 160 links to each other with the main body frame 210 of driver element 200 by screw or double-screw bolt bolt, and air valve places therebetween.Fixed unit 160 and main body frame 210 places form outer casing groove 162 and 214, in order to hold the hexagon peripheral edge 112 of air valve 110. Outer casing groove 162 and 214 is close to the hexagon peripheral edge 112 of air valve 110, so that the post bolt 111 of the fixed unit 234 of operating handle 220 and air valve is arranged vertically.Rectangle groove 163 is formed at the rear surface of fixed unit, so that the power pack 171 of power supply 170 is connected in herein.Thereby this detachable type power pack 171 is more more convenient than screws type, and can be with any angle of inclination fixed power source case 171.
According to present embodiment, power supply 170 is each the constituent element power supply of air valve shutoff device.Power supply 170 comprises power pack 171, and it is by can moving along a direction with being connected of fixed unit 160 rectangle grooves 163; Battery 172 places in the power pack 171.Because power pack 171 and fixed unit 160 are connected with removably, therefore, when battery end of life, the user can change battery easily.
As mentioned above, detect throughput according to air valve shutoff device of the present invention, in use whether the decidable combustion gas, whether air valve is in unexpected opening state, whether air valve is made as when long is used, and judges by measured throughput whether combustion gas leaks, and closes gas check valve automatically according to result of determination.Thereby can prevent the generation of gas accidents, and use more convenient.
Air valve shutoff device according to the present invention can be measured and detect gas leakage and temperature, thereby can further effectively prevent the generation of gas accidents.
In addition, only when opening, uses in air valve power supply according to air valve shutoff device of the present invention.Thereby at utmost prolonged battery life.And, utilize the low little closed electromagnetic valve air valve of power consumption, can be the user more convenience is provided.
Although describe the present invention by some preferred embodiments, obviously, for the technology of the present invention personnel, under the condition of the spirit or scope of the present invention that do not deviate from claims and limited, can carry out multiple modification and change to preferred embodiment of the present invention.
Claims (17)
1. the air valve shutoff device in the fuel gas supply passage that is arranged on gas appliance comprises:
The air-flow detection unit is used to detect the throughput on the described fuel gas supply passage;
Control unit is used for determining according to input signal the shut-in time of described air valve, and produces shutdown signal to close described air valve, and described input signal is represented the throughput that described air-flow detection unit detects and transmits; And
Driver element is used for basis and closes described air valve from the shutdown signal of described control unit,
Wherein, described air-flow detection unit comprises:
Pipeline, it is arranged on the described fuel gas supply passage, around described air valve, and has uneven cross sectional area; And
Sensor, it connects into and described control unit exchange signal, and has at least two pressure tappings measuring the pressure in the inhomogeneous cross sectional area of described pipeline zone,
Whether described control unit is judged normal with being connected of sensor, and when connection is unusual shutdown signal is sent to described driver element.
2. device according to claim 1, wherein, if through predetermined safe service time, described throughput does not change yet, and then described control unit is sent to described driver element with shutdown signal.
3. device according to claim 2 wherein, carries out difference setting according to the heating power of gas appliance and to described predetermined safe service time.
4. device according to claim 2, wherein, described control unit sends alarm signal with the scheduled time, so that reminded the user before shutdown signal is sent to described driver element, and does not receive transmission shutdown signal when the user responds at the fixed time.
5. device according to claim 1, wherein, if the air-flow in the pipeline stops, then at scheduled wait after the time, described control unit is sent to described driver element with shutdown signal.
6. device according to claim 1, wherein, whether described control unit by comparing to detect combustion gas and leak opening behind the described air valve detected at once initial air-flow signal value and preset reference value, and when detecting gas leakage shutdown signal is sent to described driver element together with alarm signal.
7. device according to claim 1 comprises also using when long the unit is set that it connects into and described control unit exchange signal, and is set by the user,
Wherein, use when long when the unit being set setting by the user when described, set long the time service time after, described control unit is sent to described driver element with shutdown signal.
8. device according to claim 1 also comprises temperature detecting unit, and it connects into and described control unit exchange signal, is used to detect environment temperature,
Wherein, if the detected temperature of described temperature detecting unit is higher than preset reference temperature, then described control unit is sent to shutdown signal described driver element again after sending alarm signal.
9. according to each the described device in the claim 2 to 8, wherein, after shutdown signal was sent to described driver element, when described air valve was not normally closed, described control unit sent alarm signal, to remind the user.
10. device according to claim 1, wherein, described driver element comprises:
Operating handle, it is arranged on the air valve post bolt, in order in the primary importance of closing described air valve with open between the second place of described air valve and rotate;
Lever spring, it flexibly is biased into described primary importance with described operating handle;
Locking lever, it is positioned at the turning radius of described operating handle, in order to limit described operating handle, makes it not shift to described primary importance from the described second place;
Separate lock unit, comprise solenoid valve, when receiving the shutdown signal of described control unit, described locking lever release, thus described operating handle rotates to described primary importance by the described second place; And
Main body frame is used to hold described operating handle, lever spring, locking lever reconciliation lock unit, and comprises outer cover.
11. device according to claim 10, wherein, described release unit comprises:
Jacking block is used for described locking lever is pushed away the described turning radius of described operating handle, and has plunger slot, in order to the plunger of the described solenoid valve of packing into; With
The top spring, it is elastically biased toward described jacking block,
Wherein, before signal was sent to described control unit, the described plunger of described solenoid valve inserted described plunger slot, with fixing described jacking block, and when receiving the signal of described control unit, described plunger and plunger slot are separated from each other, to remove the constraint to described jacking block.
12. device according to claim 11, wherein, when described operating handle being shifted to described primary importance by the described second place by the promotion operation of described locking lever, one end of described operating handle along and the side that promotes described locking lever promote described jacking block in the opposite direction, make described jacking block turn back to initial position before receiving the signal of described control unit.
13. device according to claim 10, wherein, described driver element also comprises latch, and the one end links to each other with described locking lever, and its other end is exposed to outside the described outer cover of described main body frame.
14. device according to claim 10 also comprises fixed unit, is used for the main body frame of described driver element is installed to described air valve.
15. device according to claim 14 also comprises power supply, it links to each other with described control unit and exchanges signal, is used to described control unit, described sensor and the power supply of described driver element.
16. device according to claim 15, wherein, described power supply comprises box body, and described box body detachably links to each other with the groove of described fixed unit, and can move along a direction, and battery inserts in the box body.
17. device according to claim 16, wherein, described control unit is judged battery life by detecting cell voltage, and judges battery end of life during less than predefined value at detected battery voltage value.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020060035432A KR100721932B1 (en) | 2006-04-19 | 2006-04-19 | Apparatus for closing the gas valve |
| KR1020060035432 | 2006-04-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101059182A CN101059182A (en) | 2007-10-24 |
| CN100549479C true CN100549479C (en) | 2009-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101385539A Expired - Fee Related CN100549479C (en) | 2006-04-19 | 2006-11-09 | The air valve shutoff device |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100721932B1 (en) |
| CN (1) | CN100549479C (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100836072B1 (en) | 2007-05-29 | 2008-06-09 | 주식회사 메츠 | Digital safety device for a gas valve |
| CN101441790A (en) * | 2008-12-25 | 2009-05-27 | 欧福代码技术(大连)有限公司 | Alarming device of code type pre-payment instrument |
| KR100990520B1 (en) * | 2010-01-11 | 2010-10-29 | (주)세이프퀴슬 | Gas valve auto-safety locking apparatus forpreventing gas leakage accident |
| CN102606791A (en) * | 2012-01-11 | 2012-07-25 | 杭州权衡科技有限公司 | Gas safety control device |
| CN103363554A (en) * | 2013-07-22 | 2013-10-23 | 居国文 | Leakage-proof device of intelligent fuel gas stove |
| KR101504739B1 (en) * | 2014-01-28 | 2015-03-23 | 최범석 | A valve assembly |
| CN105042171A (en) * | 2015-05-27 | 2015-11-11 | 扬中市第一蝶阀厂有限公司 | Adjusting valve |
| EP3436727A4 (en) * | 2016-03-30 | 2020-03-04 | Dresser, Inc. | Replacing a controller on a process device and a valve assembly |
| KR101896542B1 (en) * | 2017-01-23 | 2018-09-07 | 순천향대학교 산학협력단 | Oxygen flowmeter |
| CN109210269B (en) * | 2018-11-13 | 2021-05-14 | 株洲南方阀门股份有限公司 | Take monitoring system's water hammer air valve |
| CN109282081B (en) * | 2018-11-13 | 2020-12-08 | 株洲南方阀门股份有限公司 | Air valve capable of automatically monitoring working state |
| CN109488800B (en) * | 2018-12-12 | 2021-05-14 | 株洲南方阀门股份有限公司 | Monitoring type multifunctional water hammer air valve |
| CN109869633B (en) * | 2018-12-27 | 2021-02-09 | 佛燃能源集团股份有限公司 | Gas supply system with safety protection function |
| CN110247320B (en) * | 2019-06-25 | 2021-04-23 | 长兴创睿科技有限公司 | Block terminal for building distribution |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001281036A (en) | 2000-03-28 | 2001-10-10 | Miyairi Valve Seisakusho:Kk | Excessive flow-rate breaking device |
| KR100369414B1 (en) * | 2000-10-25 | 2003-01-29 | 박지규 | Recording unit of Troy Type Observer Program and Internet On-Line Inspection And Proof method By Troy Type Observer Program |
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2006
- 2006-04-19 KR KR1020060035432A patent/KR100721932B1/en active IP Right Review Request
- 2006-11-09 CN CNB2006101385539A patent/CN100549479C/en not_active Expired - Fee Related
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| Title |
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| 一种新型差压式流量计的研制. 赵静野，王文海，张玉娟.计量技术，第2003年第11期. 2003 |
| 一种新型差压式流量计的研制. 赵静野，王文海，张玉娟.计量技术，第2003年第11期. 2003 * |
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| Publication number | Publication date |
|---|---|
| CN101059182A (en) | 2007-10-24 |
| KR100721932B1 (en) | 2007-05-25 |
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