CN109217236A - Gas heater and its protective device - Google Patents
Gas heater and its protective device Download PDFInfo
- Publication number
- CN109217236A CN109217236A CN201811008605.XA CN201811008605A CN109217236A CN 109217236 A CN109217236 A CN 109217236A CN 201811008605 A CN201811008605 A CN 201811008605A CN 109217236 A CN109217236 A CN 109217236A
- Authority
- CN
- China
- Prior art keywords
- zero
- firewire
- circuit
- ground wire
- electric leakage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/14—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to occurrence of voltage on parts normally at earth potential
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Resistance Heating (AREA)
Abstract
The invention discloses a kind of gas heater and its protective device, which includes: the three-pole gang operated switch being connected with three pole pins, to connect zero curve, firewire and ground wire with disjunction access power supply；The first detection unit of corresponding zero curve and firewire setting, for detecting the electric leakage signal of zero curve or firewire；The second detection unit of corresponding ground wire setting, for examining geodesic charged signal；The electric leakage control chip being connected respectively with first detection unit and second detection unit generates zero fiery earth leakage protective instruction and earth wire charged protecting instruction for corresponding；The trip circuit being connected with electric leakage control chip, for generating tripping instruction according to zero fiery earth leakage protective instruction or earth wire charged protecting instruction；The tripping mechanism being connected respectively with three-pole gang operated switch and trip circuit is in disjunction state for receiving and executing tripping instruction to control zero curve, firewire and ground wire by control three-pole gang operated switch, so that gas valve is automatically closed.
Description
Technical field
The present invention relates to field of home appliance technology, in particular to the protective device and a kind of combustion gas of a kind of gas heater
Water heater.
Background technique
Gas heater has many advantages, such as that heating is fast, easy to use.Although current some gas heaters have zero fire leakage
Electric protection function and earth wire charged protecting function, but will lead to gas heater when the external power supply line anomalies of power supply line
Ontology electrification.If human body is in contact with gas heater ontology, the electric shock accidents of larger harm can be generated, therefore having must
This is made and targetedly be improved.
Summary of the invention
The present invention is directed to solve one of the technical problem in above-mentioned technology at least to a certain extent.
For this purpose, can be improved combustion gas an object of the present invention is to provide a kind of protective device of gas heater
The safety of water heater.
Second object of the present invention is to propose a kind of gas heater.
In order to achieve the above objectives, first aspect present invention embodiment proposes a kind of protective device of gas heater, institute
Stating gas heater includes power supply line and ontology, and the power supply line includes three pole pins, three pole pin with grafting form with
External power receptacle is attached, and the ontology includes gas valve and gas-operated thermal bath facility, and the protective device includes: three poles connection
Dynamic switch, the three-pole gang operated switch are connected with zero curve, firewire and the ground of connection and disjunction access power supply with three pole pin
Line；First detection unit, the first detection unit correspond to the zero curve and firewire setting, and the first detection unit is used
In the electric leakage signal for detecting the zero curve or the firewire；Second detection unit, the second detection unit correspond to the ground wire
Setting, the second detection unit are used to detect the charged signal of the ground wire；Electric leakage control chip, the electric leakage control chip
It is connected respectively with the first detection unit and the second detection unit, the electric leakage control chip is used for according to the zero curve
Or the electric leakage signal of the firewire generates zero fiery earth leakage protective instruction, and generates ground wire electrification according to the charged signal of the ground wire
Protection instruction；Trip circuit, the trip circuit are connected with electric leakage control chip, and the trip circuit is used for according to
Zero fiery earth leakage protective instruction or earth wire charged protecting instruction generate tripping instruction；Tripping mechanism, the tripping mechanism difference
It is connected with the three-pole gang operated switch and the trip circuit, the tripping mechanism is instructed for receiving and executing the tripping,
To be in disjunction state by controlling the three-pole gang operated switch control zero curve, the firewire and the ground wire, wherein
The gas valve is automatically closed when the zero curve, the firewire and the ground wire are in disjunction state.
The protective device of gas heater according to an embodiment of the present invention detects zero curve or firewire by first detection unit
Electric leakage signal, geodesic charged signal is examined by second detection unit, and by electric leakage control chip according to zero curve or fire
The electric leakage signal of line generates zero fiery earth leakage protective instruction, and generates earth wire charged protecting instruction according to the charged signal of ground wire,
And then tripping instruction is generated according to zero fiery earth leakage protective instruction or earth wire charged protecting instruction by trip circuit, and pass through tripping
Authorities simultaneously execute tripping instruction, are in disjunction shape to control zero curve, firewire and ground wire by control three-pole gang operated switch
State, so that gas valve is automatically closed, so as to effectively improve the safety of gas heater.
In addition, the protective device of the gas heater proposed according to that above embodiment of the present invention can also have following add
Technical characteristic:
Further, the protective device of the gas heater further include: zero fiery power-fail detection circuit, zero fire fall
Power detection circuit is used to detect the power-off signal between the zero curve and the firewire；Zero fiery power-down actions circuit, zero fire
Power-down actions circuit is connected with described zero fiery power-fail detection circuit and the trip circuit respectively, described zero fiery power-down actions circuit
For generating zero fiery power down protection instruction according to the power-off signal between the zero curve and the firewire, wherein the tripping electricity
Road is also used to generate the tripping instruction according to described zero fiery power down protection instruction.
Further, the protective device of the gas heater further include: trigger circuit is powered on, it is described to power on triggering electricity
Road is used to detect the power on signal between the zero curve and the firewire；Actuating circuit is powered on, it is described to power on actuating circuit and institute
State power on trigger circuit be connected, it is described power on actuating circuit for according to the power on signal generation power on action command；It powers on
Actuating mechanism, the actuating mechanism that powers on are connected with the actuating circuit that powers on, and the actuating mechanism that powers on is for receiving and holding
Action command is powered on described in row, to control the zero curve, the firewire and the ground wire by controlling the three-pole gang operated switch
It is in on-state.
Wherein, the electric leakage of the electric leakage control chip is detected in the first detection unit the zero curve or the firewire
When electric current is more than or equal to the first pre-set current value, described zero fiery earth leakage protective instruction is generated.
Wherein, the electric current for the ground wire that the electric leakage control chip detect in the second detection unit is more than or equal to the
When two pre-set current values, the earth wire charged protecting instruction is generated.
Wherein, it is pre- to be less than or equal to first for voltage of the described zero fiery power-down actions circuit between the zero curve and the firewire
If generating described zero fiery power down protection instruction when voltage value.
Wherein, the actuating circuit that powers on is for being more than or equal to second in the upper piezoelectric voltage for powering on trigger circuit detection
Action command is powered on described in generating when preset voltage value.
In order to achieve the above objectives, second aspect of the present invention embodiment proposes a kind of gas heater comprising first party
The protective device for the gas heater that face embodiment proposes.
Gas heater according to an embodiment of the present invention can be effective using the protective device of above-mentioned gas heater
The safety of ground raising gas heater.
Detailed description of the invention
Fig. 1 is the electrical schematic diagram of the gas heater according to an embodiment of the invention including protective device；
Fig. 2 is the electrical schematic diagram of power supply line according to an embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
The gas heater and its protective device of the embodiment of the present invention described with reference to the accompanying drawing.
As shown in Figure 1, the gas heater of the embodiment of the present invention in addition to including 100 (not shown in figure 1) of protective device, is gone back
It may include 300 (not shown) of power supply line 200 and ontology.As shown in Figure 1, power supply line 200 may include three pole pins 210, three
Pole pin 210 can be single-phase three pole plate-inserting structure, be attached with grafting form and external power receptacle.Ontology 300 may include
Gas valve 310, blower 320, controller 330, igniter (not shown), burning heater (not shown) and shell
340。
Wherein, burning heater is that combustion gas and air can be made to mix in some way and spray the dress for carrying out heating water
It sets.Gas valve 310 can be used for receiving and executing controller 300 initiation open command or out code so that outer combustion gas with
Supply air line between burning heater is in corresponding open state or closed state.Gas valve 310 may include solenoid valve,
It is automatically closed when the zero curve, firewire and ground wire of gas heater are in disjunction state.
Blower 320 can be used for air inlet and the air draft (supply of such as air and the discharge of flue gas) of gas heater, power
Device can be alternating current generator (not shown).Alternating current generator can be supplied by the end zero curve L and firewire N-terminal of power supply line 200 for it
Electricity.
Controller 330 may include transformer 331, current rectifying and wave filtering circuit 332, microprocessor 333, control relay circuit
334 and relay 335, transformer 331 can be the transformer with electrical isolation, the zero curve N-terminal of input terminal and power supply line 200
It is connected with the end firewire L, power supply is exported after the decompression of transformer 331 to current rectifying and wave filtering circuit 332.Current rectifying and wave filtering circuit 332
Alternating current after the decompression of transformer 331 can be converted to after direct current to microprocessor 333 and control relay circuit 334
Power supply.Controller 30 by microprocessor 333 issues control instruction to control the opening and closing of gas valve 310, igniter
The air inlet and air draft of igniting and blower 320.
For example, the control instruction of the transmittable shutdown open relay of microprocessor 333 or the control of closing relay refer to
It enables.When microprocessor 333 sends the control instruction for disconnecting relay, control relay circuit 334 is receiving disconnection relay
Control instruction after control relay 335 disconnect, similarly control relay circuit 334 is in the control for receiving closing relay
Relay 335 is controlled after instruction to be closed.That is, control relay circuit 334 refers in the control for receiving disconnection relay
After the control instruction of order or closing relay, accordingly controls relay 335 and be opened or closed, and then blower can be switched on or switched off
320 power supply.
Igniter is the control instruction energy instantaneous ignition combustion gas that can be issued according to controller 330, and can stablize gas flame
Device.
Shell 340 can be grounded for metal material in order to improve the safety of gas heater by the material of shell 340.
Fig. 2 is the structural schematic diagram of the protective device of gas heater according to an embodiment of the present invention.
As shown in Fig. 2, the protective device 100 of the gas heater of the embodiment of the present invention, including three-pole gang operated switch 110,
First detection unit 120, second detection unit 130, electric leakage control chip 140, trip circuit 150 and tripping mechanism 160.
Wherein, three-pole gang operated switch 110 is connected with zero curve N-terminal, the fire of connection and disjunction access power supply with three pole pins 210
The end line L and the end ground wire E.The corresponding zero curve N-terminal of first detection unit 120 and the setting of the end firewire L, first detection unit 120 is for examining
Survey the electric leakage signal at zero curve N-terminal or the end firewire L.The corresponding end the ground wire E setting of second detection unit 130, second detection unit 130 are used
Charged signal in the detection end ground wire E.Electric leakage control chip 140 respectively with first detection unit 120 and second detection unit 130
It is connected, electric leakage control chip 140 is used to generate zero fiery earth leakage protective instruction according to zero curve N-terminal or the electric leakage signal at the end firewire L, and
Earth wire charged protecting instruction is generated according to the charged signal at the end ground wire E.Trip circuit 150 is connected with electric leakage control chip 140, takes off
Circuit 150 is detained to be used to generate tripping instruction according to zero fiery earth leakage protective instruction or the instruction of ground wire E end electrization protection.Tripping mechanism
160 are connected with three-pole gang operated switch 110 and trip circuit 150 respectively, and tripping mechanism 160 is instructed for receiving and executing tripping,
Disjunction state is in control zero curve N-terminal, the end firewire L and the end ground wire E by control three-pole gang operated switch 110, wherein combustion gas
Valve is automatically closed when zero curve N-terminal, the end firewire L and the end ground wire E are in disjunction state.
In one embodiment of the invention, three-level linked switch 110 is connected with three pole pins 210, with connection and disjunction
Zero curve N-terminal, the end firewire L and the end ground wire E for accessing power supply, may include the stationary contact being arranged on zero curve N-terminal and movable contact, set
It sets in the stationary contact and movable contact, the stationary contact and movable contact that are arranged on the end ground wire E on the end firewire L, above three pairs of contacts are
Linkage, and at zero curve N-terminal, the end firewire L and the ground wire end E for connecting access power supply, the stationary contact at the end ground wire E of three pairs of contacts
Point is connected prior to zero curve N-terminal with corresponding stationary contact on the end firewire L with movable contact with movable contact, in the zero curve of disjunction access power supply
When N-terminal, the end firewire L and the ground wire end E, in zero curve N-terminal and firewire L after the stationary contact and movable contact at the end ground wire E of three pairs of contacts
Corresponding stationary contact and movable contact disjunction on end.
In one embodiment of the invention, as shown in Fig. 2, first detection unit 120 may include be set in zero curve N-terminal and
The first electromagnetic induction coil 121 and zero fiery electric leakage signal processing unit 122 on the end firewire L.Wherein, the first electromagnetic induction coil
121 can be the zero sequence transformer also cross zero curve N-terminal and the end firewire L.Zero fiery electric leakage signal processing unit 122 is respectively with first
Electromagnetic induction coil 121 is connected with electric leakage control chip 140, for receiving and processing the detection of the first electromagnetic induction coil 121
Zero curve N-terminal or the electric leakage signal at the end firewire L, and export and give electric leakage control chip 140.
In one embodiment of the invention, as shown in Fig. 2, second detection unit 130 may include being set on the end ground wire E
The second electromagnetic induction coil 131 and ground wire electrification signal processing unit 132.Wherein, the second electromagnetic induction coil 131 can be same
When across the end ground wire E zero sequence transformer.Ground wire electrification signal processing unit 132 respectively with the second electromagnetic induction coil 131 and
Electric leakage control chip 140 is connected, the charged signal at the end ground wire E for receiving and processing the detection of the second electromagnetic induction coil 131,
And it exports and gives electric leakage control chip 140.
Electric leakage control chip 140 is in the electric leakage signal for receiving zero curve N-terminal or the end firewire L, the charged signal at the end ground wire E
Afterwards, operation and judgement are carried out to the electric leakage signal of zero curve N-terminal or the end firewire L, the charged signal at the end ground wire E.If the first detection
The leakage current of zero curve N-terminal or the end firewire L that unit 120 detects is more than or equal to the first pre-set current value Iln, then leaks electricity and control core
Piece 140 generates zero fiery earth leakage protective instruction.If the electric current at the end ground wire E that second detection unit 130 detects is more than or equal to second
Pre-set current value Ie then leaks electricity and controls the generation earth wire charged protecting instruction of chip 140.Wherein, the first pre-set current value Iln is set
Range can be 0~30mA, and preferred value is 5mA, 6mA, 10mA, 15mA.Second pre-set current value Ie setting range can for 0~
50mA, and preferred value is 15mA, 30mA.
Further, after generating zero fiery earth leakage protective instruction or generating earth wire charged protecting instruction, trip circuit 150
Tripping instruction is generated according to zero fiery earth leakage protective instruction or earth wire charged protecting instruction, and tripping instruction is sent to tripping mechanism
160, tripping mechanism 160 is when receiving tripping instruction, by control three-pole gang operated switch 110 to control zero curve N-terminal, firewire L
Three pairs of contacts at end and the end ground wire E are rapidly switched to disjunction state by on-state.Gas valve 310 in gas heater three
When zero curve N-terminal, the end firewire L and the three pairs of contacts at the end ground wire E of pole linked switch 110 are in disjunction state, it is automatically closed, to cut
Disconnected combustion gas output, at this point, gas heater enters the safe condition died, can not only be effectively prevented combustion gas in this way and let out
Leakage causes damages to user, and can be effectively prevented gas-operated thermal bath facility and continue to heat, energy saving, additionally it is possible to effectively
It prevents user from continuing to use gas heater in the case where there is hot water, and then user can be effectively prevented and generate electric shock danger
Danger.
In one particular embodiment of the present invention, when zero curve N-terminal occurs in gas heater and the end firewire L is leaked electricity, such as
Fruit first detection unit 120 detects that the leakage current value at zero curve N-terminal and the end firewire L is more than or equal to the first pre-set current value Iln,
Then the electric leakage signal of zero curve N-terminal or the end firewire L is exported and controls chip 140 to electric leakage, electric leakage control chip 140 is according to zero curve N
The electric leakage signal at end or the end firewire L generates zero fiery earth leakage protective instruction, and exports to trip circuit 150.Then, driving circuit
150 driving tripping mechanisms 160 execute tripping and instruct zero curve N-terminal, the end firewire L and ground wire E so that three-pole gang operated switch 110
Three pairs of contacts movement at end, finally makes zero curve N-terminal, the end firewire L and the ground wire E of the three-pole gang operated switch 110 of gas heater
End rapidly switches to disjunction state, i.e., zero curve N-terminal, the end firewire L and the ground of cut-off three-pole gang operated switch 110 by on-state
The end line E.Meanwhile the zero curve N-terminal in three-pole gang operated switch 110, the end firewire L and the end ground wire E, when being cut off, gas valve 310 is automatic
It closes, to cut off combustion gas output.At this point, gas heater is in the safe condition died.To realize gas and hot water
The fiery creepage protection function of the zero of device.Even if there are the external power supply line anomalies of power supply line 200, gas heater is also in disconnected
The i.e. uncharged state of the state of electric isolution, thus, it is possible to be effectively prevented user Danger Electric shock risk occurs, and then can be effectively
Improve the safety of gas heater.
In one particular embodiment of the present invention, when the electrification at the end ground wire E occurs in gas heater, if the second inspection
It surveys unit 130 and detects that the electrification current value at the end ground wire E is more than or equal to the second pre-set current value Ie, then by the electrification at the end ground wire E
Signal, which is exported, controls chip 140 to electric leakage, and electric leakage control chip 140 generates ground wire electrification according to the charged signal at the end ground wire E and protects
Finger shield enables, and exports to trip circuit 150.Then, driving circuit 150 drives tripping mechanism 160 to execute tripping and instructs and then make
Zero curve N-terminal, the end firewire L and the movement of three pairs of contacts at the end ground wire E for obtaining three-pole gang operated switch 110, finally make gas heater
Zero curve N-terminal, the end firewire L and the end ground wire E of three-pole gang operated switch 110 disjunction state is rapidly switched to by on-state, i.e.,
Zero curve N-terminal, the end firewire L and the end ground wire E of cut-off three-pole gang operated switch 110.Meanwhile in the zero curve N of three-pole gang operated switch 110
When end, the end firewire L and the end ground wire E are cut off, gas valve 310 is automatically closed, to cut off combustion gas output.At this point, gas heater
In the safe condition died, so that the earth wire charged protecting function of gas heater can be realized.Even if there is power supply line
200 external power supply line anomalies, gas heater are also in the i.e. uncharged state of power-off isolation, thus, it is possible to
It is effectively prevented user and Danger Electric shock risk occurs, and then the safety of gas heater can be effectively improved.
The protective device of gas heater according to an embodiment of the present invention detects zero curve or firewire by first detection unit
Electric leakage signal, geodesic charged signal is examined by second detection unit, and by electric leakage control chip according to zero curve or fire
The electric leakage signal of line generates zero fiery earth leakage protective instruction, and generates earth wire charged protecting instruction according to the charged signal of ground wire,
And then tripping instruction is generated according to zero fiery earth leakage protective instruction or earth wire charged protecting instruction by trip circuit, and pass through tripping
Authorities simultaneously execute tripping instruction, are in disjunction shape to control zero curve, firewire and ground wire by control three-pole gang operated switch
State, so that gas valve is automatically closed, so as to effectively improve the safety of gas heater.
The gas heater of the embodiment of the present invention can not only have the fiery creepage protection function of above-mentioned zero and ground wire electrification to protect
Protective function can also have zero fiery power-down protection and zero fire to power on turn-on power loss.
In one embodiment of the invention, as shown in Fig. 2, the protective device 100 of the embodiment of the present invention may also include zero
Fiery power-fail detection circuit 171 and zero fiery power-down actions circuit 172.Zero fiery power-fail detection circuit 171 is for detecting zero curve N-terminal and fire
Power-off signal between the end line L.Zero fiery power-down actions circuit 172 respectively with zero fiery power-fail detection circuit 171 and trip circuit 150
It is connected, zero fiery power-down actions circuit 172 is protected for generating zero fiery power down according to the power-off signal between zero curve N-terminal and the end firewire L
Finger shield enables, wherein trip circuit 150 is also used to generate tripping instruction according to zero fiery power down protection instruction.
In one particular embodiment of the present invention, when operating voltage moment occur in the zero curve N-terminal of water heater and the end firewire L
When decline, if zero fiery power-fail detection circuit 171 detects that the voltage Uln between zero curve N-terminal and the end firewire L is less than or equal to first
Preset voltage value Ulnd, then zero fiery power-fail detection circuit 171 export zero fiery power-off signal to zero fire power-down actions circuit 172, and zero
Fiery power-down actions circuit 172 generates zero fiery power down protection instruction according to the power-off signal between zero curve N-terminal and the end firewire L.Tripping
Circuit 150 generates tripping instruction according to zero fiery power down protection instruction, and exports to trip circuit 150.Then, driving circuit 150
It drives tripping mechanism 160 to execute tripping and instructs zero curve N-terminal, the end firewire L and the end ground wire E so that three-pole gang operated switch 110
Three pairs of contacts movement, finally make zero curve N-terminal, the end firewire L and the end ground wire E of the three-pole gang operated switch 110 of gas heater
Disjunction state rapidly (time may be less than being equal to 0.5s) is switched to by on-state, i.e., cut-off three-pole gang operated switch 110
Zero curve N-terminal, the end firewire L and the end ground wire E.Meanwhile the zero curve N-terminal in three-pole gang operated switch 110, the end firewire L and the end ground wire E quilt
When cutting, gas valve 310 is automatically closed, to cut off combustion gas output.At this point, gas heater is in the safe shape died
State, so that zero fiery power-down protection of gas heater can be realized.Even if power supply line 200 zero fiery creepage protection function and
When earth wire charged protecting disabler, it is also possible that gas heater is in the safe condition died, it is effectively prevented
Danger Electric shock risk, which occurs, for user can effectively improve the safety of gas heater in turn.Wherein, the first preset voltage value Ulnd
Setting range can be 0~160V.
In one embodiment of the invention, as shown in Fig. 2, the protective device 100 of the embodiment of the present invention further includes powering on
Trigger circuit 181 powers on actuating circuit 182 and powers on actuating mechanism 183.Power on trigger circuit 181 for detect zero curve N-terminal and
Power on signal between the end firewire L.It powers on actuating circuit 182 and is connected with trigger circuit 181 is powered on, power on the use of actuating circuit 182
Action command is powered in generating according to power on signal.It powers on actuating mechanism 183 and is connected with actuating circuit 182 is powered on, power on movement
Mechanism 183 powers on action command for receiving and executing, to control zero curve N-terminal, firewire L by control three-pole gang operated switch 110
End and the end ground wire E are in on-state.
In one particular embodiment of the present invention, when the zero curve N-terminal of water heater and the end firewire L operating voltage occur from zero
When moment reaches normal working voltage, if powering on trigger circuit 181 detects voltage Uln between zero curve N-terminal and the end firewire L
More than or equal to the second preset voltage value Ulnh, then powers on trigger circuit 181 and export power on signal to powering on actuating circuit 182, on
The electric output of actuating circuit 182 powers on action command, powers on the execution of actuating mechanism 183 with driving and powers on action command, to pass through control
Three-pole gang operated switch 110 processed controls zero curve N-terminal, the end firewire L and the movement of three pairs of contacts at the end ground wire E, finally makes gas and hot water
By disjunction state, rapidly (time may be less than at zero curve N-terminal, the end firewire L and the end ground wire E of the three-pole gang operated switch 110 of device
In 0.5s) it is switched on state, zero curve N-terminal, the end firewire L and the end ground wire E of three-pole gang operated switch 110 can be connected.To
Zero fire that gas heater can be achieved powers on turn-on power loss, enables to gas heater that can be transferred to normally without manual intervention
Working condition.Wherein, the first preset voltage value Ulnh setting range can be 0~110V.
It should be noted that power supply line 200 may also include connection other than including three pole pins 210 and protective device 100
Device 220 and mains cord 230.Connector 220 is connected between mains cord 230 and gas heater, soft for realizing power supply
Electrical connection between line 230 and gas heater.Mains cord 230 is connected between protective device 100 and connector 220, is used
Electrical connection between realization protective device 100 and connector 220.
Based on the above embodiment, the invention also provides a kind of gas heaters.
The gas heater of the embodiment of the present invention, the protection dress including the gas heater that the above embodiment of the present invention proposes
It sets, specific embodiment can refer to above-described embodiment, and to avoid redundancy, details are not described herein.
Gas heater according to an embodiment of the present invention can be effective using the protective device of above-mentioned gas heater
Improve safety in ground.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (11)
1. a kind of protective device of gas heater, which is characterized in that the gas heater includes power supply line and ontology, described
Power supply line includes three pole pins, and three pole pin is attached with grafting form and external power receptacle, and the ontology includes
Gas valve and burning heater, the protective device include:
Three-pole gang operated switch, the three-pole gang operated switch is connected with three pole pin accesses the zero of power supply with connection and disjunction
Line, firewire and ground wire；
First detection unit, the first detection unit correspond to the zero curve and firewire setting, the first detection unit
For detecting the electric leakage signal of the zero curve or the firewire；
Electric leakage control chip, the electric leakage control chip are connected with the first detection unit, and the electric leakage control chip is used for
Zero fiery earth leakage protective instruction is generated according to the electric leakage signal of the zero curve or the firewire；
Trip circuit, the trip circuit are connected with electric leakage control chip, and the trip circuit is used for according to zero fire
Earth leakage protective instruction generates tripping instruction；
Tripping mechanism, the tripping mechanism are connected with the three-pole gang operated switch and the trip circuit respectively, the tripping machine
Structure is for receiving and executing the tripping instruction, to control the zero curve, the firewire by controlling the three-pole gang operated switch
Disjunction state is in the ground wire, wherein the gas valve is in point in the zero curve, the firewire and the ground wire
It is automatically closed when disconnected state.
2. the protective device of gas heater according to claim 1, which is characterized in that further include:
Second detection unit, the second detection unit correspond to the ground wire setting, and the second detection unit is for detecting institute
State the charged signal of ground wire；
The electric leakage control chip is connected with the second detection unit, and the electric leakage controls chip, is also used to: according to describedly
The charged signal of line generates earth wire charged protecting instruction；
The trip circuit, is also used to: generating the tripping according to earth wire charged protecting instruction and instructs.
3. the protective device of gas heater according to claim 2, which is characterized in that further include:
Zero fiery power-fail detection circuit, described zero fiery power-fail detection circuit are used to detect the power down between the zero curve and the firewire
Signal；
Zero fiery power-down actions circuit, described zero fiery power-down actions circuit respectively with described zero fiery power-fail detection circuit and the tripping
Circuit is connected, and described zero fiery power-down actions circuit is used to generate zero fire according to the power-off signal between the zero curve and the firewire
Power down protection instruction, wherein the trip circuit is also used to generate the tripping instruction according to described zero fiery power down protection instruction.
4. the protective device of gas heater according to claim 3, which is characterized in that further include:
Trigger circuit is powered on, the trigger circuit that powers on is for detecting the power on signal between the zero curve and the firewire；
Actuating circuit is powered on, the actuating circuit that powers on is connected with the trigger circuit that powers on, and the actuating circuit that powers on is used for
Action command is powered on according to power on signal generation；
Actuating mechanism is powered on, the actuating mechanism that powers on is connected with the actuating circuit that powers on, and the actuating mechanism that powers on is used for
Receive and execute it is described power on action command, with by control the three-pole gang operated switch control the zero curve, the firewire and
The ground wire is in on-state.
5. the protective device of gas heater according to claim 4, which is characterized in that the electric leakage control chip is in institute
When the leakage current of the zero curve or the firewire of stating first detection unit detection is more than or equal to the first pre-set current value, generate
Described zero fiery earth leakage protective instruction.
6. the protective device of gas heater according to claim 4, which is characterized in that the electric leakage control chip is in institute
When stating the electric current of the ground wire of second detection unit detection more than or equal to the second pre-set current value, generates the ground wire electrification and protect
Finger shield enables.
7. the protective device of gas heater according to claim 4, which is characterized in that described zero fiery power-down actions circuit
Voltage between the zero curve and the firewire, which is less than or equal to generate described zero fiery power down protection when the first preset voltage value, to be referred to
It enables.
8. the protective device of gas heater according to claim 4, which is characterized in that the actuating circuit that powers on is used for
Action command is powered on described in generating when the upper piezoelectric voltage for powering on trigger circuit detection is more than or equal to the second preset voltage value.
9. the protective device of gas heater according to claim 2, which is characterized in that the first detection unit, packet
It includes: the first electromagnetic induction coil for being detected for the electric leakage signal to the firewire or the zero curve and for the fire
The electric leakage signal of line or the zero curve carries out zero fiery electric leakage signal processing unit of calculation process；Wherein:
First electromagnetic induction coil is sheathed on the firewire and the zero curve, described zero fiery electric leakage signal processing unit point
It is not connected with first electromagnetic induction coil and electric leakage control chip.
10. the protective device of gas heater according to claim 9, which is characterized in that the second detection unit, packet
It includes: the second electromagnetic induction coil for being detected for the charged signal to the ground wire, for the band telecommunications to the ground wire
Number carry out calculation process ground wire electrification signal processing unit；Wherein:
Second electromagnetic induction coil is sheathed on the ground wire, and the ground wire electrification signal processing unit is respectively with described
Two electromagnetic induction coils are connected with electric leakage control chip.
11. a kind of gas heater, which is characterized in that including gas heater according to claim 1 to 10
Protective device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811008605.XA CN109217236A (en) | 2017-06-29 | 2017-06-29 | Gas heater and its protective device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811008605.XA CN109217236A (en) | 2017-06-29 | 2017-06-29 | Gas heater and its protective device |
| CN201710518250.8A CN109217235A (en) | 2017-06-29 | 2017-06-29 | Gas heater and its protective device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710518250.8A Division CN109217235A (en) | 2017-06-29 | 2017-06-29 | Gas heater and its protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109217236A true CN109217236A (en) | 2019-01-15 |
Family
ID=64977001
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710518250.8A Pending CN109217235A (en) | 2017-06-29 | 2017-06-29 | Gas heater and its protective device |
| CN201811008605.XA Pending CN109217236A (en) | 2017-06-29 | 2017-06-29 | Gas heater and its protective device |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710518250.8A Pending CN109217235A (en) | 2017-06-29 | 2017-06-29 | Gas heater and its protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN109217235A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109217235A (en) * | 2017-06-29 | 2019-01-15 | 芜湖美的厨卫电器制造有限公司 | Gas heater and its protective device |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200969510Y (en) * | 2006-11-08 | 2007-10-31 | 常德洪安贸易有限公司 | Minisize intelligent electricity protector |
| CN102904210A (en) * | 2012-10-08 | 2013-01-30 | 广东美的电器股份有限公司 | Leakage protection method, leakage protection device and water heater |
| CN103036198A (en) * | 2012-12-03 | 2013-04-10 | 佛山市顺德区澳骏电子科技有限公司 | Multi-functional safe electricity leakage protection device capable of preventing false wiring of power socket |
| CN103579992A (en) * | 2012-08-01 | 2014-02-12 | 樱花卫厨（中国）股份有限公司 | Voltage type leakage protection power line over-current protection device for electric water heater |
| CN204681075U (en) * | 2015-06-24 | 2015-09-30 | 广州视源电子科技股份有限公司 | A kind of power-down protection circuit |
| CN205195230U (en) * | 2015-11-26 | 2016-04-27 | 余姚市嘉荣电子电器有限公司 | Circuit in earthleakage protective equipment automation |
| JP2016102778A (en) * | 2014-11-14 | 2016-06-02 | 株式会社村田製作所 | Electric leak detecting circuit |
| CN205753346U (en) * | 2016-07-14 | 2016-11-30 | 广东海信家电有限公司 | A kind of electric heater and outer casing electrification protection thereof control device |
| CN106384994A (en) * | 2016-12-02 | 2017-02-08 | 余姚市嘉荣电子电器有限公司 | Electric leakage protector |
| CN106505518A (en) * | 2016-12-27 | 2017-03-15 | 余姚市嘉荣电子电器有限公司 | A kind of earth leakage protective device |
| CN106849006A (en) * | 2017-04-13 | 2017-06-13 | 广州心敢享节能科技有限公司 | A kind of intelligence is with earth leakage protective electric water heater controller |
| CN109217235A (en) * | 2017-06-29 | 2019-01-15 | 芜湖美的厨卫电器制造有限公司 | Gas heater and its protective device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201935415U (en) * | 2011-02-23 | 2011-08-17 | 樱花卫厨（中国）股份有限公司 | Gas water heater with leakage protector |
| CN202957574U (en) * | 2012-12-03 | 2013-05-29 | 佛山市顺德区澳骏电子科技有限公司 | Multifunctional safety electric-leakage protection device in case of false wiring of power source socket |
| CN206283051U (en) * | 2016-12-27 | 2017-06-27 | 余姚市嘉荣电子电器有限公司 | Intelligent wireless earth leakage protective socket |
| CN106981859A (en) * | 2017-03-30 | 2017-07-25 | 乐清市诚富电器科技有限公司 | A kind of ground line current locking-type earth leakage protective device control method |
-
2017
- 2017-06-29 CN CN201710518250.8A patent/CN109217235A/en active Pending
- 2017-06-29 CN CN201811008605.XA patent/CN109217236A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200969510Y (en) * | 2006-11-08 | 2007-10-31 | 常德洪安贸易有限公司 | Minisize intelligent electricity protector |
| CN103579992A (en) * | 2012-08-01 | 2014-02-12 | 樱花卫厨（中国）股份有限公司 | Voltage type leakage protection power line over-current protection device for electric water heater |
| CN102904210A (en) * | 2012-10-08 | 2013-01-30 | 广东美的电器股份有限公司 | Leakage protection method, leakage protection device and water heater |
| CN103036198A (en) * | 2012-12-03 | 2013-04-10 | 佛山市顺德区澳骏电子科技有限公司 | Multi-functional safe electricity leakage protection device capable of preventing false wiring of power socket |
| JP2016102778A (en) * | 2014-11-14 | 2016-06-02 | 株式会社村田製作所 | Electric leak detecting circuit |
| CN204681075U (en) * | 2015-06-24 | 2015-09-30 | 广州视源电子科技股份有限公司 | A kind of power-down protection circuit |
| CN205195230U (en) * | 2015-11-26 | 2016-04-27 | 余姚市嘉荣电子电器有限公司 | Circuit in earthleakage protective equipment automation |
| CN205753346U (en) * | 2016-07-14 | 2016-11-30 | 广东海信家电有限公司 | A kind of electric heater and outer casing electrification protection thereof control device |
| CN106384994A (en) * | 2016-12-02 | 2017-02-08 | 余姚市嘉荣电子电器有限公司 | Electric leakage protector |
| CN106505518A (en) * | 2016-12-27 | 2017-03-15 | 余姚市嘉荣电子电器有限公司 | A kind of earth leakage protective device |
| CN106849006A (en) * | 2017-04-13 | 2017-06-13 | 广州心敢享节能科技有限公司 | A kind of intelligence is with earth leakage protective electric water heater controller |
| CN109217235A (en) * | 2017-06-29 | 2019-01-15 | 芜湖美的厨卫电器制造有限公司 | Gas heater and its protective device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109217235A (en) | 2019-01-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20180100459A (en) | Fast switch fault current limiter and current limiter system | |
| CN103542531B (en) | Electric heater with blower fan and control method thereof and circuit and household electrical appliance | |
| CN108933427A (en) | Electric heater and its protective device | |
| CN110429489A (en) | A kind of electric power box convenient for fast break | |
| CN204596224U (en) | Tryoff is shown in a kind of electrical fire simulation | |
| CN107084535A (en) | Electric heater and its protection device | |
| CN109217236A (en) | Gas heater and its protective device | |
| CN206947926U (en) | Gas heater and its protection device | |
| CN108870764A (en) | A kind of power-off protection apparatus and electric heater of electric heater | |
| CN106299908B (en) | The protection plug for having power-off tripping and superpressure trip avoidance function | |
| CN104410055B (en) | A kind of supply line's protection circuit | |
| CN103269057B (en) | A kind of earth-fault protection | |
| CN206831846U (en) | Electric heater and its protection device | |
| CN206452098U (en) | The protection device and electric heater of power line | |
| US9214798B1 (en) | Range infinite switch with integral GFCI subsystem | |
| CN206834720U (en) | Electric heater and its protection device | |
| CN108011256A (en) | Leakage protecting plug and electric heater | |
| CN202938364U (en) | Gas furnace with safety flameout device | |
| CN206353643U (en) | Leakage protecting plug and electric heater | |
| CN206353699U (en) | Electrical cord assembly and the electric heater with it | |
| CN207778779U (en) | Electric heater and its control device | |
| CN108266855A (en) | Air-conditioning system and its anti-control device on fire, method | |
| CN108933428A (en) | Electric heater and its protective device | |
| CN107245863B (en) | The Iganition control system of fuel gas dryer and fuel gas dryer with it | |
| CN208253969U (en) | A kind of water heater of band induction water flow isolation power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190115 |
|
| RJ01 | Rejection of invention patent application after publication |