CN206353699U - Electrical cord assembly and the electric heater with it - Google Patents
Electrical cord assembly and the electric heater with it Download PDFInfo
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- CN206353699U CN206353699U CN201621402913.7U CN201621402913U CN206353699U CN 206353699 U CN206353699 U CN 206353699U CN 201621402913 U CN201621402913 U CN 201621402913U CN 206353699 U CN206353699 U CN 206353699U
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Abstract
The utility model discloses a kind of electrical cord assembly and the electric heater with it, wherein, electrical cord assembly includes：Connector；Mains cord, one end of the mains cord is electrically connected with the connector, and the mains cord has zero line, live wire and ground wire；Attaching plug, the attaching plug is electrically connected with the other end of the mains cord, three-pole gang operated switch of the attaching plug with three pole pins being connected respectively with the zero line, live wire and ground wire and for the zero line, live wire and the ground wire between the connector and three pole pin to be changed into disjunction state from on-state.According to electrical cord assembly of the present utility model; the three-pole gang operated switch of zero line, live wire and ground wire power on/off can be realized by being set between three pole pins and connector; control connector and three pole pin power on/off can be facilitated; so as to be advantageously implemented the protective effect to electrical equipment; ensure electric appliance safety, Consumer's Experience is good.
Description
Technical field
The utility model is related to technical field of water heaters, more particularly, to a kind of electrical cord assembly and the electricity with it
Water heater.
Background technology
Electric heater in correlation technique, uses mains-supplied, meeting when insulation breakdown occurs for its internally charged part
Cause zero live wire to leak electricity and then produce Danger Electric shock risk, or electric shock danger can be also produced when ground wire electrification because supply line is abnormal
Danger.
Utility model content
The utility model is intended at least solve one of technical problem in correlation technique to a certain extent.Therefore, this reality
With a kind of electrical cord assembly of new proposition, the electrical cord assembly it is simple in construction, compact, using safe and reliable, use can be ensured
The Electrical Safety at family and the electrocution-proof protection to electrical equipment.
The utility model also proposes a kind of electric heater with said power component.
According to the electrical cord assembly of the utility model first aspect, including：Connector；Mains cord, the mains cord
One end electrically connected with the connector, the mains cord has zero line, live wire and ground wire；Attaching plug, the power supply is inserted
Head is electrically connected with the other end of the mains cord, and the attaching plug has to be connected with the zero line, live wire and ground wire respectively
Three pole pins and for by the zero line, live wire and the ground wire between the connector and three pole pin by on-state
It is changed into the three-pole gang operated switch of disjunction state.
According to electrical cord assembly of the present utility model, zero can be realized by being set between three pole pins and connector
The three-pole gang operated switch of line, live wire and ground wire power on/off, can facilitate control connector and three pole pin power on/off, so that favorably
In protective effect of the realization to electrical equipment, it is ensured that electric appliance safety, Consumer's Experience is good.
In addition, according to electrical cord assembly of the present utility model, can also have technical characteristic additional as follows：
According to one embodiment of the present utility model, attaching plug includes：First electromagnetic induction coil, first electromagnetism
Induction coil is used to detect the zero line, the leakage current of the live wire, if the leakage current detected is more than or equal to electric leakage electricity
When flowing setting value, export electric leakage signal；Electrical apparatus release, the electrical apparatus release links with first electromagnetic induction coil and three pole
Switch is connected, and the electrical apparatus release is used for the electric leakage signal for receiving the first electromagnetic induction coil output, and according to described
Electric leakage signal performs trip action to control the three-pole gang operated switch to be changed into the zero line, live wire and ground wire from on-state
Disjunction state.
According to one embodiment of the present utility model, the leakage current setting value is less than 30mA.
According to one embodiment of the present utility model, the electrical apparatus release includes：First amplification driving circuit, described first puts
Big drive circuit is used for the electric leakage signal for receiving the first electromagnetic induction coil output；Trip circuit, the dropout electricity
Road is connected with first amplification driving circuit, and according to electric leakage signal output dropout instruction；Tripping mechanism, the dropout
Mechanism is connected to perform the trip action by trip circuit driving with the three-pole gang operated switch and the trip circuit.
According to one embodiment of the present utility model, in addition to：Second electromagnetic induction coil, the second electromagnetic induction line
Enclose for detecting the electric current by the ground wire, if the ground line current detected is more than or equal to ground line current setting value, export
Ground line current signal；Second amplification driving circuit, second amplification driving circuit and second electromagnetic induction coil and institute
State electrical apparatus release to be connected, to receive the ground line current signal and drive the electrical apparatus release to perform according to the ground line current signal
The trip action.
According to one embodiment of the present utility model, the ground line current setting value is less than 50mA.
According to one embodiment of the present utility model, in addition to：3rd electromagnetic induction coil, the 3rd electromagnetic induction line
Enclose for detecting the voltage between the zero line and the ground wire, if the magnitude of voltage detected is more than or equal to voltage setting value,
Ground wire electrification signal is exported, second amplification driving circuit is connected with the 3rd electromagnetic induction coil, it is described to receive
Tape electric signal simultaneously drives the electrical apparatus release to perform the trip action according to the ground wire electrification signal.
According to one embodiment of the present utility model, the voltage setting value is less than 50V.
According to one embodiment of the present utility model, in addition to：Mode conversion switch, the mode conversion switch with it is described
Second electromagnetic induction coil, the 3rd electromagnetic induction coil are connected to switch the second electromagnetic induction line with the electrical apparatus release
Enclose and the break-make between the electrical apparatus release, between the 3rd electromagnetic induction coil and the electrical apparatus release.
According to the electric heater of the utility model second aspect, including：Heater is provided with inner bag, the inner bag；Heat is disconnected
Road device, the thermal circuit beraker is located at outside the inner bag and electrically connected with the heater；With the electricity according to above-described embodiment
Source line component.
Additional aspect and advantage of the present utility model will be set forth in part in the description, partly by from following description
In become obvious, or by it is of the present utility model practice recognize.
Brief description of the drawings
Fig. 1 is the schematic diagram of the attaching plug component according to the utility model embodiment.
Fig. 2 is the structural representation of the electric heater according to the utility model embodiment；
Fig. 3 is the circuit connection diagram of the electric heater according to the utility model embodiment；
Reference：
A：Electric heater；
10：Inner bag；
20：Heater；
30：Thermostat；
40：Thermal circuit beraker；
50：Electrical cord assembly；501：Live wire；502：Ground wire；503：Zero line；
51：Three pole pins；52：Mains cord；53：Connector；
54：Three-pole gang operated switch；55：Mode conversion switch；
561：First electromagnetic induction coil；562：Second electromagnetic induction coil；563：3rd electromagnetic induction coil；
571：First amplification driving circuit；572：Second amplification driving circuit；573：Trip circuit；
58：Tripping mechanism.
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings.Below by
The embodiment being described with reference to the drawings is exemplary, it is intended to for explaining the utility model, and it is not intended that new to this practicality
The limitation of type.
1 specifically describe the electrical cord assembly 50 according to the utility model first aspect embodiment below in conjunction with the accompanying drawings.
Connector 53, mains cord 52 and attaching plug are included according to the electrical cord assembly 50 of the utility model embodiment.
Specifically, one end of mains cord 52 is electrically connected with connector 53, and mains cord 52 has zero line 503, live wire 501 and ground wire
502, attaching plug is electrically connected with the other end of mains cord 52, attaching plug have respectively with zero line 503, live wire 501 and ground
Three connected pole pins 51 of line 502 and for by zero line 503, live wire 501 and the ground wire between the pole pin 51 of connector 53 and three
502 are changed into the three-pole gang operated switch 54 of disjunction state from on-state.
In other words, the electrical cord assembly 50 is mainly made up of connector 53, mains cord 52 and attaching plug, wherein, electricity
The wire harness that source flexible cord 52 is made up of zero line 503, live wire 501 and ground wire 502 is constituted, one end and the electricity of connector 53 of mains cord 52
Connection, the other end of mains cord 52 is electrically connected with attaching plug, and connector 53 is adapted to electrical equipment (such as water heater)
Be electrically connected plug receptacle, and attaching plug is adapted to external power source (such as electric socket).
Further, attaching plug includes three pole pins 51 and three-pole gang operated switch 54, wherein, three pole pins 51 are single-phase
Three pole plate-inserting structures of the two poles of the earth band ground, are electrically connected, three inserted sheets of three pole pins 51 with grafting form and external power receptacle
Corresponding with the zero line 503, live wire 501 and ground wire 502 of mains cord 52 respectively to be connected, three-pole gang operated switch 54 is located at three pole pins
Between 51 and connector 53, the connection of 503 3 poles of zero line 501, live wire 502, ground wire of the power supply for controlling charger and
Disjunction, i.e., realized by the zero line 503, live wire 501 and ground wire 502 of mains cord 52 and electrically connected.
Specifically, when three-pole gang operated switch 54 is in closure state, connector 53 is electrically connected with three pole pins 51, can be with
Realize the electrical connection of electrical equipment and external power supply；When three-pole gang operated switch 54 is in open mode, the pole pin of connector 53 and three
51 disconnect, i.e., zero line 503, live wire 501 and the no power of ground wire 502 now between the pole pin 51 of connector 53 and three realize electricity
The off-position of device.
Thus, according to the electrical cord assembly 50 of the utility model embodiment, by three pole pins 51 and connector 53 it
Between set can realize the three-pole gang operated switch 54 of zero line 503, live wire 501 and the power on/off of ground wire 502, can conveniently control connection
The power on/off of 53 and three pole pin of device 51, so as to be advantageously implemented the protective effect to electrical equipment, it is ensured that electric appliance safety, user's body
Test.
Wherein.According to one embodiment of the present utility model, attaching plug includes the first electromagnetic induction coil 561 and threaded off
Device, the first electromagnetic induction coil 561 is used to detect zero line 503, the leakage current of live wire 501, if the leakage current detected is big
When equal to leakage current setting value, output electric leakage signal, electrical apparatus release and the first electromagnetic induction coil 561 and three-pole gang operated switch
54 are connected, and electrical apparatus release is used for the electric leakage signal for receiving the output of the first electromagnetic induction coil 561, and performs dropout according to electric leakage signal
Act to control three-pole gang operated switch 54 that zero line 503, live wire 501 and ground wire 502 are changed into disjunction state from on-state.
That is, attaching plug is mainly made up of the first electromagnetic induction coil 561 and electrical apparatus release, wherein, the first electromagnetism
Induction coil 561 can be connected with electrical apparatus release signal, and the first electromagnetic induction coil 561 can the neighbouring pole pin of connector 53 and three
Zero line 503 and live wire 501 between 51 are set, to detect whether zero line 503 and live wire 501 occur leaky, if the first electricity
, can be outside when the zero line 503 and the leakage current of live wire 501 that magnetic induction coil 561 is detected are more than leakage current setting value
Electric leakage signal is exported, and electric leakage signal is fed back into electrical apparatus release, it is dynamic that electrical apparatus release can perform dropout according to the electric leakage signal received
Make, so as to control three-pole gang operated switch 54 to be changed into disjunction state by on-state, now three pole pins 51 and connector 53 it
Between zero line 503, live wire 501 and in off-position, electrical equipment disconnects with external power source.
The attaching plug of the electrical cord assembly 50 can realize earth leakage protective to zero line 503 and live wire 501, prevent electrical equipment sheet
The Danger Electric shock risk that body is produced by electric leakage of breaking down, so as to lift the security that electrical equipment is used.
Alternatively, leakage current setting value is less than 30mA.That is the scope of leakage current setting value is general in 30 leakage currents
Setting value can be within 5mA, 6mA, 10mA, 15mA, the setting value of such as leakage current can for 5mA, 6mA, 10mA,
15mA, 20mA, 25mA etc..When the leakage current that the first electromagnetic induction coil 561 is detected is less than leakage current setting value, the
One electromagnetic induction coil 561 will not externally send signal；The zero line 503 and live wire detected when the first electromagnetic induction coil 561
When 501 leakage current is more than or equal to leakage current setting value, the first electromagnetic induction coil 561 sends electric leakage letter to electrical apparatus release
Number, then electrical apparatus release can perform trip action according to the electric leakage signal received, so as to control three-pole gang operated switch 54 by connecting
State is changed into disjunction state, and earth leakage protective is realized to zero line 503 and live wire 501.
Preferably, the setting value of leakage current can be 5mA, 6mA, 10mA, 15mA, if for example, leakage current setting value
During for 10mA, when the leakage current that the first electromagnetic induction coil 561 is detected is less than 10mA, the first electromagnetic induction coil 561
Signal will not externally be sent；When the zero line 503 and the leakage current of live wire 501 that the first electromagnetic induction coil 561 is detected are more than
During equal to 10mA, the first electromagnetic induction coil 561 sends electric leakage signal to electrical apparatus release, and then electrical apparatus release can be according to the leakage received
Electric signal performs trip action, so as to control three-pole gang operated switch 54 to be changed into disjunction state by on-state, to the He of zero line 503
Live wire 501 realizes earth leakage protective.
Wherein, electrical apparatus release includes the first amplification driving circuit 571, trip circuit 573 and tripping mechanism 58, and the first amplification is driven
Dynamic circuit 571 is used for the electric leakage signal for receiving the output of the first electromagnetic induction coil 561, the amplification driving of trip circuit 573 and first
Circuit 571 is connected, and according to electric leakage signal output dropout instruction, tripping mechanism 58 and three-pole gang operated switch 54 and trip circuit
573 are connected performs trip action to be released the driving of circuit 573.
Specifically, as shown in figure 1, electrical cord assembly 50 contains Leakage protection plug, it is internally provided with three poles connection
Dynamic switch 54, three-pole gang operated switch 54 can connect the zero line 503 with disjunction charger power supply, live wire 501, ground wire 502 3
The first electromagnetic induction coil 561, the first amplification driving circuit 571, electricity of threading off are additionally provided with inside pole, Leakage protection plug
Road 573 and tripping mechanism 58, the first electromagnetic induction coil 561 carry out detection of electrical leakage to zero line 503, live wire 501, if detecting zero
When the leakage current of line 503 or live wire 501 is more than or equal to leakage current setting value, then electric leakage signal is exported to the first amplification driving
Circuit 571, then through the first amplification driving circuit 571 export to trip circuit 573 send dropout instruction, then by trip circuit
573 drive tripping mechanisms 58 to perform trip action, so that three-pole gang operated switch 54 produces trip action, quickly by zero line
503rd, live wire 501 and the pole of ground wire 502 3 are changed into disjunction state from on-state, due to having completely cut through electrical equipment and external power source
Between connection, so electrical equipment is entered without electric safe condition.
Thus, the electrical cord assembly 50 is simple in construction, compact, and connection is reliable, and number of components is few, can be to the He of zero line 503
Live wire 501 realizes earth leakage protective, it is to avoid barrier electric leakage produces Danger Electric shock risk to electrical equipment for some reason in itself, so that the security performance of electrical equipment is obtained
To lifting.
In some embodiments of the present utility model, attaching plug also includes：The He of second electromagnetic induction coil 562
Second amplification driving circuit 572, the second electromagnetic induction coil 562 is used to detect the electric current by ground wire 502, if the ground detected
When line current is more than or equal to ground line current setting value, export ground line current signal, the second amplification driving circuit 572 and the second electromagnetism
Induction coil 562 is connected with electrical apparatus release, to receive ground line current signal and drive electrical apparatus release to perform according to ground line current signal de-
Work, i.e. electrical apparatus release is pulled to perform trip action to control three-pole gang operated switch 54 by zero line 503, live wire according to ground line current signal
501 and ground wire 502 disjunction state is changed into from on-state.
Reference picture 1, electrical cord assembly 50 contains Leakage protection plug, and attaching plug is internally provided with the linkage of three poles and opened
54 are closed, the zero line 503 with disjunction charger and power supply, live wire 501,502 3 poles of ground wire can be connected, earth leakage protective power supply is inserted
Head is internal to be additionally provided with the first electromagnetic induction coil 561, the first amplification driving circuit 571, the second electromagnetic induction coil 562, the
Two amplification driving circuits 572, trip circuit 573 and tripping mechanism 58, the second electromagnetic induction coil 562 carry out band to ground wire 502
Electro-detection, if detecting ground line current more than or equal to ground line current setting value, exports ground line current signal and is driven to the second amplification
Dynamic circuit 572, the second amplification driving circuit 572 exports the trip circuit 573 to electrical apparatus release after ground line current signal is amplified, so
Afterwards by trip circuit 573 drives tripping mechanism 58 to perform trip action, so that three-pole gang operated switch 54 produces trip action,
Zero line 503, live wire 501 and the pole of ground wire 502 3 are quickly changed into disjunction state from on-state, due to having completely cut through electrical equipment
Connection between external power source, so electrical equipment is entered without electric safe condition.
The electrical cord assembly 50 can realize earth leakage protective to zero line 503 and live wire 501, can carry out band to ground wire 502 again
Electric protection, the Danger Electric shock risk for not only avoiding the electric leakage of electrical equipment failure itself from producing, moreover it is possible to the ground wire bad to its supply line's environment
502 powered realize power off insulation blocking, so that the security performance of electrical equipment further gets a promotion.
Alternatively, ground line current setting value is less than 50mA.For example, ground line current setting value can for 20mA, 30mA,
40mA, 45mA etc., when the ground line current that the second electromagnetic induction coil 562 is detected is less than ground line current setting value, the second electricity
Magnetic induction coil 562 will not externally send signal；When the ground line current that the second electromagnetic induction coil 562 is detected is more than or equal to ground
During line current setting value, the second electromagnetic induction coil 562 sends ground line current signal to the second amplification driving circuit 572, then
Second amplification driving circuit 572 is exported after ground line current signal is amplified to electrical apparatus release, and electrical apparatus release can be according to the ground wire received
Current signal performs trip action, so as to control three-pole gang operated switch 54 to be changed into disjunction state by on-state, realizes over the ground
The electrization protection of line 502.
Preferably, the setting value of ground line current can be 15mA, 30mA, if for example, ground line current setting value be 15mA when,
When the ground line current that the second electromagnetic induction coil 562 is detected is less than 15mA, the second electromagnetic induction coil 562 will not be to outgoing
The number of delivering letters；When the ground line current that the second electromagnetic induction coil 562 is detected is more than or equal to 15mA, the second electromagnetic induction coil
562 send electric leakage signal to electrical apparatus release, and then electrical apparatus release can perform trip action according to the electric leakage signal received, so as to control
Three-pole gang operated switch 54 is changed into disjunction state by on-state, realizes the electrization protection to ground wire 502.
In some embodiments of the present utility model, attaching plug also includes：3rd electromagnetic induction coil 563,
3rd electromagnetic induction coil 563 is used to detect voltage between zero line 503 and ground wire 502, if the magnitude of voltage detected is more than etc.
When voltage setting value, output ground wire electrification signal, the second amplification driving circuit 572 is connected with the 3rd electromagnetic induction coil 563
To receive ground wire electrification signal and drive electrical apparatus release to perform trip action according to ground strip electric signal, that is, the linkage of three poles is controlled to open
Close 54 and zero line 503, live wire 501 and ground wire 502 are changed into disjunction state from on-state.
Specifically, as shown in figure 1, in the present embodiment, electrical cord assembly 50 contains Leakage protection plug, inside it
Three-pole gang operated switch 54 is provided with, the zero line 503 with disjunction charger and power supply, live wire 501, ground wire 502 3 can be connected
The first electromagnetic induction coil 561, first the 571, second electricity of amplification driving circuit are additionally provided with inside pole, Leakage protection plug
Magnetic induction coil 562, the second amplification driving circuit 572, the 3rd electromagnetic induction coil 563, trip circuit 573 and tripping mechanism
58, the 3rd electromagnetic induction coil 563 is detected to the voltage between zero line 503 and ground wire 502, if detecting the He of zero line 503
Voltage between ground wire 502 is more than or equal to voltage setting value, then exports ground wire electrification signal to the second amplification driving circuit 572,
Second amplification driving circuit 572 exports the trip circuit 573 to electrical apparatus release, trip circuit 573 after ground wire electrification signal is amplified
Dropout instruction is sent, then by trip circuit 573 drives tripping mechanism 58 to perform trip action, so that three-pole gang operated switch
54 produce trip action, and zero line 503, live wire 501 and the pole of ground wire 502 3 quickly are changed into disjunction state from on-state, due to
The connection between electrical equipment and external power source is completely cut through, so electrical equipment is entered without electric safe condition.
Thus, the electrical cord assembly 50 can realize earth leakage protective to zero line 503 and live wire 501, and ground wire 502 can be entered again
Row electrization protection, the Danger Electric shock risk for not only avoiding the electric leakage of electrical equipment failure itself from producing, moreover it is possible to bad to its supply line's environment
Ground wire 502 is powered to realize power-off insulation blocking, so that the security performance of electrical equipment further gets a promotion.
Alternatively, voltage setting value is less than 50V.For example, voltage setting value can be for 20V, 30V, 40V etc., when detecting
Voltage between zero line 503 and ground wire 502 is less than voltage setting value, and the 3rd electromagnetic induction coil 563 will not externally send signal；
When detecting the voltage between zero line 503 and ground wire 502 more than or equal to voltage setting value, then the 3rd electromagnetic induction coil 563 is defeated
Go out ground wire electrification signal to the second amplification driving circuit 572, then the second amplification driving circuit 572 amplifies ground wire electrification signal
The trip circuit 573 to electrical apparatus release is exported afterwards, and trip circuit 573 sends dropout instruction, then drives dropout by trip circuit 573
Mechanism 58 performs trip action, so that three-pole gang operated switch 54 produces trip action, quickly by zero line 503, the and of live wire 501
The pole of ground wire 502 3 is changed into disjunction state from on-state, realizes the electrization protection to ground wire 502.
Advantageously, attaching plug also includes：Mode conversion switch 55, the electromagnetic induction coil of mode conversion switch 55 and second
562nd, the 3rd electromagnetic induction coil 563 and electrical apparatus release be connected to switch between the second electromagnetic induction coil 562 and electrical apparatus release, the 3rd
Break-make between electromagnetic induction coil 563 and electrical apparatus release.
Thus, the Leakage protection plug on the electrical cord assembly 50 has two kinds of Working moulds of current mode and voltage-type
Formula, by Setting pattern change-over switch 55, when the ground wire 502 of current mode mode of operation lower outer portion power supply is because there is interference signal input
When causing to occur 502 electrization protection misoperation of ground wire, then switch to voltage-type mode of operation to carry out the dimension of such misoperation
Repair, due to being provided with voltage-type mode of operation as deposit mode of operation, so that the maintenanceability of electrical equipment is further changed
It is kind.
Specifically, the attaching plug it is main by three pole pins 51, three-pole gang operated switch 54, the first electromagnetic induction coil 561,
Second electromagnetic induction coil 562, the 3rd electromagnetic induction coil 563, the first amplification driving circuit 571, the second amplification driving circuit
572nd, trip circuit 573, tripping mechanism 58, mode conversion switch 55 are constituted, and the first electromagnetic induction coil 561 is used to detect zero line
503rd, the leakage current of live wire 501, and be connected with the first amplification driving circuit 571；Second electromagnetic induction coil 562 is used to detect
It is connected by the electric current of ground wire 502, and with the second amplification driving circuit 572；3rd electromagnetic induction coil 563 is used to detect described
Voltage between zero line 503 and the ground wire 502, and be connected with the second amplification driving circuit 572；Second drive circuit is with threading off
The trip circuit 573 of device is connected, and tripping mechanism 58 is connected with three-pole gang operated switch 54, and mode conversion switch 55 is respectively with second
Electromagnetic induction coil 562, the 3rd electromagnetic induction coil 563 are connected with the second amplification driving circuit 572.
First electromagnetic induction line 561 is enclosed for detecting whether zero line 503 or live wire 501 leak electricity, and the electric leakage is believed
Number export to the first amplification driving circuit 571；Second electromagnetic induction coil 562 is used to detect whether ground wire 502 has electric current to pass through,
And give the second amplification driving circuit 572 by the ground line current signal output；3rd electromagnetic induction coil 563 is used to detect zero line
Whether there is voltage between 503 and ground wire 502, and the voltage signal is exported to the second amplification driving circuit 572；First amplification is driven
Dynamic circuit 571 is used to export to trip circuit after being amplified the electric leakage signal that the first electromagnetic induction coil 561 is detected
573；Second amplification driving circuit 572 is used for the ground line current signal or the 3rd detected to the second electromagnetic induction coil 562
The voltage signal that electromagnetic induction coil 563 is detected is exported after being amplified to trip circuit 573；Trip circuit 573 is used to connect
Receive electric leakage signal, the ground line current signal or part-loading goods of the second amplification driving circuit 572 of the first amplification driving circuit 571
Exported after signal to tripping mechanism 573；Tripping mechanism 58 is used to perform the dropout instruction that trip circuit 573 is sent, and quickly makes
Three-pole gang operated switch 54 is switched to disjunction state by on-state；Mode conversion switch 55 is used for the second electromagnetic induction coil 562
Detect the mode of operation switching of ground line current and the 3rd electromagnetic induction coil 563 detection part-loading goods.
External power source is incorporated on electrical equipment through electrical cord assembly 50, once failure of insulation occurs for the electrification device of electrical equipment inside
When, then leaked electricity between zero line 503 and live wire 501, it is to avoid such a failure triggers the protection philosophy got an electric shock as follows：First electricity
Magnetic induction coil 561 carries out detection of electrical leakage to zero line 503, live wire 501, if detecting the leakage current of zero line 503 or live wire 501
More than or equal to leakage current setting value, then export electric leakage actuating signal and driven to the first amplification driving circuit 571, then through the first amplification
Dynamic circuit 571 is exported sends dropout instruction to trip circuit 573, then by trip circuit 573 drives tripping mechanism 58 to perform
Trip action, so that three-pole gang operated switch 54 produces trip action, quickly by zero line 503, live wire 501 and the pole of ground wire 502 3
Disjunction state is changed into from on-state, due to having completely cut through the connection between electrical equipment and external power source, so electrical equipment enters
To without electric safe condition.
When causing the ground wire 502 of electrical cord assembly 50 powered extremely because of external power source, then electrical equipment is likely to become electrical body, work
Leakage protection plug is placed in current mode mode of operation and avoids electrical equipment from turning into electrical body by operation mode change-over switch 55, is triggered and is touched
The protection philosophy of electricity is as follows：Second electromagnetic induction coil 562 carries out live detection to ground wire 502, if it is big to detect ground line current
Driven in equal to ground line current setting value, then exporting ground line current signal to the second amplification driving circuit 572, then through the second amplification
Circuit 572 is exported sends dropout instruction to trip circuit 573, then by trip circuit 573 drives tripping mechanism 58 de- to perform
Pull work so that three-pole gang operated switch 54 produce trip action, quickly by zero line 503, live wire 501 and the pole of ground wire 502 3 by
On-state is changed into disjunction state, due to having completely cut through the connection between electrical equipment and external power source, so electrical equipment is entered
Without electric safe condition.
When causing to have voltage between the ground wire 502 of power line and zero line 503 extremely because of external power source, because zero line 503 is logical
It is often the zero potential then extremely electriferous state of ground wire 502, now electrical equipment may also turn into electrical body, working mode change switch 55 will
Leakage protection plug is placed in voltage-type mode of operation and avoids electrical equipment from turning into electrical body, triggers the protection philosophy got an electric shock as follows：
3rd electromagnetic induction coil 563 carries out voltage detecting to zero line 503 and ground wire 502, if detect zero line 503 and ground wire 502 it
Between voltage be more than or equal to voltage setting value, then export ground wire electrification signal to the second amplification driving circuit 572, then put through second
Big drive circuit 572 is exported sends dropout instruction to trip circuit 573, then by trip circuit 573 drive tripping mechanism 58
Trip action is performed, so that three-pole gang operated switch 54 produces trip action, quickly by zero line 503, live wire 501 and ground wire 502
Three poles are changed into disjunction state from on-state, due to having completely cut through the connection between electrical equipment and external power source, so electrical equipment
Enter without electric safe condition.
1 to Fig. 3 specifically describe the electric heater A according to the utility model second aspect embodiment below in conjunction with the accompanying drawings.
Inner bag 10, thermal circuit beraker 40 are included and according to above-described embodiment according to the electric heater A of the utility model embodiment
Electrical cord assembly 50, be provided with heater 20 in inner bag 10, it is outer and electrically connected with heater 20 that thermal circuit beraker 40 is located at inner bag 10.
Specifically, as shown in Figures 2 and 3, electric heater A is main by inner bag 10, heater 20, thermal circuit beraker 40, temperature control
Device 30, electrical cord assembly 50 are constituted, and wherein inner bag 10 is used to deposit in water, inner bag 10 provided with heater 20 with inner bag 10
Water is heated, thermal circuit beraker 40 and thermostat 30 be each provided at that inner bag 10 is outer and two ends of thermostat 30 respectively with thermal circuit beraker 40 and plus
Hot device 20 is electrically connected, and thermostat 30 can set temperature to make turn on automatically or disconnection between heater 20 and external power source by it, heat
Breaker 40 can be carried out power-off protection by its design temperature to heater 20, and one end and the thermal circuit beraker 40 of electrical cord assembly 50 can
Releasably it is connected, the other end and the external power source of electrical cord assembly 50 are detachably connected.
Once electric heater A charging members leak electricity, or cause electric heater A ground due to external power source reason
When tape is electric, the three-pole gang operated switch 54 of Leakage protection plug be automatically cut off powered to electric heater A zero line 503,
Live wire 501, ground wire 502, effectively solve user's Danger Electric shock risk existing during using electric heater A.
Further, since Leakage protection plug has current mode and voltage-type mode of operation, if current mode mode of operation
Under due to have on the ground wire 502 of external power source interference signal input cause to occur earth wire charged protecting misoperation when, you can switching
Quickly repaired to voltage-type mode of operation, voltage-type mode of operation can make electric heater A's as deposit mode of operation
Maintenanceability is further improved.
Due to there is above-mentioned technique effect according to the electrical cord assembly 50 of the utility model embodiment, therefore, according to this reality
Also there is above-mentioned technique effect with the electric heater A of new embodiment, i.e. electric heater A's simple in construction, compact, each part
Connection is reliable, is convenient to mount and dismount, and using safe and reliable, can ensure the Electrical Safety of user and electric heater A protection against electric shock is protected
Shield.
Specifically, external power source is incorporated on electric heater A through electrical cord assembly 50, once the band inside electric heater A
When failure of insulation occurs for electric heater A parts, then leaked electricity between zero line 503 and live wire 501, it is to avoid such a failure, which triggers, to be touched
The protection philosophy of electricity is as follows：First electromagnetic induction coil 561 carries out detection of electrical leakage to zero line 503, live wire 501, if detecting zero
The leakage current of line 503 or live wire 501 is more than or equal to leakage current setting value, then exports electric leakage actuating signal and driven to the first amplification
Dynamic circuit 571, then exported through the first amplification driving circuit 571 and send dropout instruction to trip circuit 573, then by trip circuit
573 drive tripping mechanisms 58 to perform trip action, so that three-pole gang operated switch 54 produces trip action, quickly by zero line
503rd, live wire 501 and the pole of ground wire 502 3 are changed into disjunction state from on-state, due to completely cut through electric heater A with it is outer
Connection between portion's power supply, so electric heater A is entered without electric safe condition.
When causing the ground wire 502 of electrical cord assembly 50 powered extremely because of external power source, then electric heater A is likely to become powered
Leakage protection plug is placed in current mode mode of operation and avoids electric heater A from turning into band by body, working mode change switch 55
Electric body, triggers the protection philosophy got an electric shock as follows：Second electromagnetic induction coil 562 carries out live detection to ground wire 502, if detecting
Ground line current is more than or equal to ground line current setting value, then export ground line current signal to the second amplification driving circuit 572, then through the
Two amplification driving circuits 572 are exported sends dropout instruction to trip circuit 573, then drives tripping mechanism by trip circuit 573
58 perform trip action, so that three-pole gang operated switch 54 produces trip action, quickly by zero line 503, live wire 501 and ground wire
502 3 poles are changed into disjunction state from on-state, due to having completely cut through the connection between electric heater A and external power source,
So electric heater A is entered without electric safe condition.
When causing to have voltage between the ground wire 502 of power line and zero line 503 extremely because of external power source, because zero line 503 is logical
It is often the zero potential then extremely electriferous state of ground wire 502, now electric heater A may also turn into electrical body, working mode change is opened
Close 55 and Leakage protection plug is placed in the guarantor that voltage-type mode of operation avoids electric heater A from being got an electric shock as electrical body, initiation
Protect principle as follows：3rd electromagnetic induction coil 563 carries out voltage detecting to zero line 503 and ground wire 502, if detecting zero line 503
Voltage between ground wire 502 is more than or equal to voltage setting value, then exports ground wire electrification signal to the second amplification driving circuit
572, then through the second amplification driving circuit 572 export to trip circuit 573 send dropout instruction, then driven by trip circuit 573
Move tripping mechanism 58 to perform trip action, so that three-pole gang operated switch 54 produces trip action, quickly by zero line 503, fire
Line 501 and the pole of ground wire 502 3 are changed into disjunction state from on-state, due to having completely cut through electric heater A and external power source
Between connection, so electric heater A is entered without electric safe condition.
Thus, the electric leakage of three pole disconnection types is provided with the electric heater A of the utility model embodiment, its electrical cord assembly 50
Attaching plug is protected, earth leakage protective can be realized to zero line 503 and live wire 501, electrization protection can be carried out to ground wire 502 again, no
The Danger Electric shock risk for only avoiding the electric leakage of water heater failure itself from producing, moreover it is possible to which the ground wire 502 bad to its supply line's environment is powered
Power-off insulation blocking is realized, so that the security performance of water heater further gets a promotion.And the leakage on electrical cord assembly 50
Electric protection attaching plug has two kinds of mode of operations of current mode and voltage-type, when the ground wire of current mode mode of operation lower outer portion power supply
502 because have interference signal input cause to occur 502 electrization protection misoperation of ground wire when, then switch to voltage-type mode of operation come
The maintenance of such misoperation is carried out, due to being provided with voltage-type mode of operation as deposit mode of operation, so that water heater
Maintenanceability is further improved.
According to the electric heater A of the utility model embodiment other compositions and operation for ordinary skill people
All it is known for member, is not detailed herein.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " suitable
The orientation or position relationship of the instruction such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " are based on orientation shown in the drawings
Or position relationship, be for only for ease of description the utility model and simplify and describe, rather than indicate or imply signified device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limit of the present utility model
System.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be
Mechanically connect or electrically connect or can communicate each other；Can be joined directly together, the indirect phase of intermediary can also be passed through
Even, can be two element internals connection or two elements interaction relationship, unless otherwise clear and definite restriction.For this
For the those of ordinary skill in field, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described
Point is contained at least one embodiment of the present utility model or example.In this manual, to the schematic table of above-mentioned term
State and be necessarily directed to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be with
Combined in an appropriate manner in any one or more embodiments or example.In addition, in the case of not conflicting, this area
Technical staff the not be the same as Example or the feature of example and non-be the same as Example or example described in this specification can be entered
Row is combined and combined.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is in scope of the present utility model
It is interior above-described embodiment to be changed, changed, replaced and modification.
Claims (10)
1. a kind of electrical cord assembly, it is characterised in that including：
Connector；
Mains cord, one end of the mains cord is electrically connected with the connector, the mains cord have zero line, live wire and
Ground wire；
Attaching plug, the attaching plug is electrically connected with the other end of the mains cord, the attaching plug have respectively with
Three connected pole pins of the zero line, live wire and ground wire and for by described zero between the connector and three pole pin
Line, live wire and ground wire are changed into the three-pole gang operated switch of disjunction state from on-state.
2. electrical cord assembly according to claim 1, it is characterised in that attaching plug includes：
First electromagnetic induction coil, first electromagnetic induction coil is used to detect the zero line, the leakage current of the live wire,
If the leakage current detected is more than or equal to leakage current setting value, export electric leakage signal；
Electrical apparatus release, the electrical apparatus release is connected with first electromagnetic induction coil and the three-pole gang operated switch, the electrical apparatus release
For receiving the electric leakage signal of the first electromagnetic induction coil output, and trip action is performed according to the electric leakage signal
To control the three-pole gang operated switch that the zero line, live wire and ground wire are changed into disjunction state from on-state.
3. electrical cord assembly according to claim 2, it is characterised in that the leakage current setting value is less than 30mA.
4. electrical cord assembly according to claim 2, it is characterised in that the electrical apparatus release includes：
First amplification driving circuit, first amplification driving circuit is used for the institute for receiving the first electromagnetic induction coil output
State electric leakage signal；
Trip circuit, the trip circuit is connected with first amplification driving circuit, and exports de- according to the electric leakage signal
Button instruction；
Tripping mechanism, the tripping mechanism is connected with by the trip circuit with the three-pole gang operated switch and the trip circuit
Driving performs the trip action.
5. the electrical cord assembly according to claim 2 or 4, it is characterised in that also include：
Second electromagnetic induction coil, second electromagnetic induction coil is used to detect the electric current by the ground wire, if detecting
Ground line current be more than or equal to ground line current setting value when, output ground line current signal；
Second amplification driving circuit, second amplification driving circuit and second electromagnetic induction coil and the electrical apparatus release phase
Even, moved with receiving the ground line current signal and driving the electrical apparatus release to perform described thread off according to the ground line current signal
Make.
6. electrical cord assembly according to claim 5, it is characterised in that the ground line current setting value is less than 50mA.
7. electrical cord assembly according to claim 5, it is characterised in that also include：
3rd electromagnetic induction coil, the 3rd electromagnetic induction coil is used to detect the electricity between the zero line and the ground wire
Pressure, if the magnitude of voltage detected is more than or equal to voltage setting value, exports ground wire electrification signal, second amplification driving circuit
It is connected with the 3rd electromagnetic induction coil, to receive the ground wire electrification signal and be driven according to the ground wire electrification signal
The electrical apparatus release performs the trip action.
8. electrical cord assembly according to claim 7, it is characterised in that the voltage setting value is less than 50V.
9. electrical cord assembly according to claim 7, it is characterised in that also include：Mode conversion switch, the pattern turns
Switch is changed to be connected to switch described the with second electromagnetic induction coil, the 3rd electromagnetic induction coil and the electrical apparatus release
Break-make between two electromagnetic induction coils and the electrical apparatus release, between the 3rd electromagnetic induction coil and the electrical apparatus release.
10. a kind of electric heater, it is characterised in that including：
Heater is provided with inner bag, the inner bag；
Thermal circuit beraker, the thermal circuit beraker is located at outside the inner bag and electrically connected with the heater；With
Electrical cord assembly according to any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621402913.7U CN206353699U (en) | 2016-12-20 | 2016-12-20 | Electrical cord assembly and the electric heater with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621402913.7U CN206353699U (en) | 2016-12-20 | 2016-12-20 | Electrical cord assembly and the electric heater with it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206353699U true CN206353699U (en) | 2017-07-25 |
Family
ID=59346666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621402913.7U Active CN206353699U (en) | 2016-12-20 | 2016-12-20 | Electrical cord assembly and the electric heater with it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206353699U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111351224A (en) * | 2018-12-20 | 2020-06-30 | 武汉海尔热水器有限公司 | Method for adjusting power of electric water heater and electric water heater |
-
2016
- 2016-12-20 CN CN201621402913.7U patent/CN206353699U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111351224A (en) * | 2018-12-20 | 2020-06-30 | 武汉海尔热水器有限公司 | Method for adjusting power of electric water heater and electric water heater |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20220913 Address after: 241000 west side of 3 / F, No.5 office building, new energy and new materials gathering area, Fuzhou Road, Jiangbei District, Wuhu City, Anhui Province Patentee after: Wuhu Midea intelligent kitchen electricity Manufacturing Co.,Ltd. Address before: 241009 Wan Chun East Road, East Wuhu economic and Technological Development Zone, Wuhu, Anhui Patentee before: WUHU MIDEA KITCHEN AND BATH APPLIANCES MFG. Co.,Ltd. |