CN106953298A - Washing machine and its overvoltage crowbar - Google Patents
Washing machine and its overvoltage crowbar Download PDFInfo
- Publication number
- CN106953298A CN106953298A CN201710173877.4A CN201710173877A CN106953298A CN 106953298 A CN106953298 A CN 106953298A CN 201710173877 A CN201710173877 A CN 201710173877A CN 106953298 A CN106953298 A CN 106953298A
- Authority
- CN
- China
- Prior art keywords
- washing machine
- resistance
- power
- voltage
- contact
- 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.)
- Granted
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
- H02H3/20—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 excess voltage
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
Abstract
The invention discloses a kind of washing machine and its overvoltage crowbar, the overvoltage crowbar is connected between AC power and the switch power module of washing machine, and the overvoltage crowbar includes：Controllable switch unit, controllable switch unit is connected with AC power, and controllable switch unit is used to be controlled the AC power for being input to washing machine；Overvoltage detection unit, overvoltage detection unit is used to detect whether the voltage of AC power to exceed predeterminated voltage；Trigger control unit, trigger control unit is used to be controlled controllable switch unit when the voltage of AC power exceedes predeterminated voltage, to cut off power supply of the AC power to washing machine.The overvoltage crowbar can be when AC power exceedes predeterminated voltage, and power supply of the cut-out AC power to washing machine so as to avoid overvoltage from damaging the switch power module of washing machine, and then can effectively be protected to washing machine.
Description
Technical field
The present invention relates to washing machine technology field, more particularly to a kind of washing machine and a kind of washing machine overvoltage crowbar.
Background technology
Power system in the course of the work, because overvoltage may occur for the suddenly change of circuit state and electromagnetic states
Situation, i.e., alternating voltage root-mean-square value is raised under power frequency, the 10% of overrate, and the duration be more than 1 minute
Long-time variation in voltage phenomenon.And overvoltage typically can be to household electrical appliance, such as washing machine causes to damage.
In correlation technique, when washing machine works, washing machine controller can ceaselessly detect the operating voltage of washing machine, once
There is overpressure situation in operating voltage, and controller can control washing machine to be stopped, and carry out alarm.But, washing machine work
When there is overpressure situation during work, user is typically not at the scene, therefore can not cut off washing machine in time according to alarm
Power supply.This can cause overvoltage to continue to increase, once overvoltage exceedes the tolerance range of Washing machine switch power module,
Switch power module will be damaged due to overvoltage, so that washing machine can be caused to break down.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.
Therefore, it is an object of the present invention to propose a kind of overvoltage crowbar of washing machine, the overvoltage crowbar
Can be when AC power exceedes predeterminated voltage, power supply of the cut-out AC power to washing machine, so as to avoid occurring due to
Overvoltage makes the phenomenon that the switch power module of washing machine is damaged, and then washing machine effectively can be protected.
It is another object of the present invention to propose a kind of washing machine.
To reach above-mentioned purpose, first aspect present invention embodiment proposes a kind of overvoltage crowbar of washing machine, institute
State overvoltage crowbar to be connected between the switch power module of AC power and the washing machine, the overvoltage crowbar bag
Include：Controllable switch unit, the controllable switch unit is connected with the AC power, and the controllable switch unit is used for input
AC power to the washing machine is controlled；Overvoltage detection unit, the overvoltage detection unit is used to detect described
Whether the voltage of AC power exceedes predeterminated voltage；Trigger control unit, the trigger control unit is used in the alternating current
The voltage in source is controlled when exceeding predeterminated voltage to the controllable switch unit, to cut off the AC power to the laundry
The power supply of machine.
The overvoltage crowbar of washing machine according to embodiments of the present invention, AC power is detected by overvoltage detection unit
Voltage whether exceed predeterminated voltage, trigger control unit AC power voltage exceed predeterminated voltage when to gate-controlled switch list
Member is controlled, to cut off power supply of the AC power to washing machine.Thus, it is possible to avoid occurring because overvoltage makes washing machine
The phenomenon that switch power module is damaged, and then washing machine can effectively be protected.
In addition, the overvoltage crowbar of the washing machine proposed according to the above embodiment of the present invention can also have following add
Technical characteristic：
According to one embodiment of present invention, the overvoltage crowbar of above-mentioned washing machine also includes：Holding unit, it is described
Holding unit is used in power supply of the controllable switch unit cut-out AC power to the washing machine to described controllable
The state of switch element is kept.
According to one embodiment of present invention, the controllable switch unit includes relay, and the relay includes first
Contact, the second contact, the 3rd contact and coil, first contact are connected with one end of the AC power, and described second touches
Point is connected with the holding unit, the 3rd contact respectively with the overvoltage detection unit and the switch power module
First input end is connected, the other end of the AC power the second input respectively with the switch power module and the guarantor
Hold unit to be connected, the coil is connected with the trigger control unit and the holding unit respectively, wherein, when described first tactile
When point is connected with the 3rd contact, the AC power is normally powered to the washing machine；When first contact with
During the second contact connection, the AC power disconnects the power supply to the washing machine.
According to one embodiment of present invention, above-mentioned washing machine overvoltage crowbar also includes voltage conversion unit and the
One Tip element, the voltage conversion unit is connected with the 3rd contact, and the voltage conversion unit is used for the exchange
The voltage of power supply is changed supplies first Tip element to export the first direct current, and first Tip element sends institute
State the prompt message that AC power is in normal condition.
According to one embodiment of present invention, the voltage conversion unit includes：First diode, first diode
Anode be connected with the 3rd contact；First resistor, one end of the first resistor and the negative electrode phase of first diode
Even；Second diode, the anode of second diode is connected with the other end of the first resistor；Second resistance, described
Anode of the one end of two resistance respectively with second diode is connected with the other end of the first resistor, the second resistance
The other end be connected with the negative electrode of second diode and form first node, the first node and the second of the coil
End is connected；First electrochemical capacitor, the positive terminal of first electrochemical capacitor is connected with the anode of second diode, and described
The negative pole end ground connection of one electrochemical capacitor.
According to one embodiment of present invention, first Tip element includes：First voltage-stabiliser tube, first voltage-stabiliser tube
Negative electrode positive terminal respectively with the anode of second diode, one end of the second resistance and first electrochemical capacitor
It is connected；First light emitting diode, the anode of first light emitting diode is connected with the anode of first voltage-stabiliser tube, and described
The minus earth of one light emitting diode.
According to one embodiment of present invention, the overvoltage detection unit includes：3rd resistor, the 3rd resistor
One end is connected with the negative electrode of first diode；4th resistance, one end of the 4th resistance is another with the 3rd resistor
One end is connected；5th resistance, one end of the 5th resistance is connected with the other end of the 4th resistance and forms Section Point,
The other end ground connection of 5th resistance；Second electrochemical capacitor, positive terminal and the Section Point of second electrochemical capacitor
It is connected, the negative pole end of second electrochemical capacitor is connected with the 5th resistance.
According to one embodiment of present invention, the trigger control unit includes：6th resistance, the one of the 6th resistance
End is connected with the first node；Second light emitting diode, the anode of second light emitting diode and the 6th resistance
The other end is connected, and the negative electrode of second light emitting diode is connected with the first end of the coil；IGCT, the IGCT
First end is connected with the negative electrode of second light emitting diode and the first end of the coil respectively, the second end of the IGCT
Ground connection；3rd electrochemical capacitor, the positive terminal of the 3rd electrochemical capacitor is connected with the control end of the IGCT, the 3rd electricity
The negative pole end of solution electric capacity is connected with the second end of the IGCT；7th resistance, the 7th resistance and the described 3rd electrolysis electricity
Hold in parallel；Second voltage-stabiliser tube, the anode of second voltage-stabiliser tube is connected with the control end of the IGCT, second voltage-stabiliser tube
Negative electrode be connected with the Section Point.
According to one embodiment of present invention, the holding unit includes：8th resistance, one end of the 8th resistance with
Second contact is connected；First electric capacity, one end of first electric capacity is connected with the other end of the 8th resistance；Rectification
Bridge, the first input end of the rectifier bridge is connected with the other end of first electric capacity, the second input of the rectifier bridge with
The other end of the AC power is connected, the first output end of the rectifier bridge respectively with one end of first electric capacity and described
The other end of 8th resistance is connected, the second output head grounding of the rectifier bridge；9th resistance, one end of the 9th resistance with
First output end of the rectifier bridge is connected, and the other end of the 9th resistance is connected with the first node.
To reach above-mentioned purpose, another aspect of the present invention embodiment proposes a kind of washing machine, and it includes above-mentioned laundry
The overvoltage crowbar of machine.
Washing machine according to embodiments of the present invention, passes through the Zenith tracking list of the overvoltage crowbar of above-mentioned washing machine
Whether the voltage of member detection AC power exceedes predeterminated voltage, and trigger control unit exceedes predeterminated voltage in the voltage of AC power
When controllable switch unit is controlled, to cut off power supply of the AC power to washing machine.Thus, it is possible to avoid occurring due to mistake
Voltage makes the phenomenon that the switch power module of washing machine is damaged, and improves the reliability of washing machine work.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and be readily appreciated that, wherein,
Fig. 1 is the circuit diagram of the excess voltage protection of washing machine according to an embodiment of the invention；
Fig. 2 is the electrical schematic diagram of washing machine in correlation technique；And
Fig. 3 is the electrical schematic diagram of washing machine according to an embodiment of the invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
Below with reference to the accompanying drawings come describe the embodiment of the present invention proposition washing machine excess voltage protection and washing machine.
Fig. 1 is the circuit diagram of the excess voltage protection of washing machine according to an embodiment of the invention.As shown in figure 1,
Overvoltage crowbar is connected between AC power AC and the switch power module 100 of washing machine, including：Controllable switch unit
10th, overvoltage detection unit 20 and trigger control unit 30.
Wherein, controllable switch unit 10 is connected with AC power AC, and controllable switch unit 10 is used for being input to washing machine
AC power AC be controlled.Overvoltage detection unit 20 is used to detect whether AC power AC voltage to exceed default electricity
Pressure.Trigger control unit 30 is used to control controllable switch unit 10 when AC power AC voltage exceedes predeterminated voltage
System, to cut off power supplies of the AC power AC to washing machine.
Specifically, in correlation technique, as shown in dotted line frame in Fig. 2, AC power AC live wire L and zero line N voltage enters
After the computer board of washing machine, directly it is connected with switch power module 100, to carry out voltage conversion by switch power module 100.
But, which is when AC power AC is over-pressed, and the piezo-resistance that may result in switch power module 100 is burnt, so that
Switch power module 100 is damaged, so make washing machine break down can not normal work.
Therefore, in embodiments of the present invention, as shown in dotted line frame in Fig. 3, in the switch electricity of AC power AC and washing machine
Increase overvoltage crowbar 200 between source module 100, AC power AC live wire L and zero line N voltage is entered washing machine
After computer board, also into overvoltage crowbar 100, to carry out overvoltage protection to switch power module 100.
Specifically, as shown in figure 1, on washing machine after electricity, overvoltage detection unit 20 detects AC power AC's in real time
Whether voltage exceedes predeterminated voltage, if it is, the ON operation of trigger control unit 30.After trigger control unit 30 is turned on, meeting
Make electronic work in controllable switch unit 10, so as to cut off power supplies of the AC power AC to washing machine.Thus, it is possible to avoid
Voltage damages the switch power module of washing machine, and then washing machine effectively can be protected, and improves the work of washing machine
Reliability.
Further, as shown in figure 1, according to one embodiment of present invention, the overvoltage crowbar of above-mentioned washing machine
Holding unit 40 can also be included.Holding unit 40 is used to cut off confessions of the AC power AC to washing machine in controllable switch unit 10
The state of controllable switch unit 10 is kept when electric.
That is, when over-voltage condition occurs in AC power AC, electronic work in controllable switch unit 10, to cut off friendship
Flow power supplies of the power supply AC to washing machine.Holding unit 40 can carry out continued power to controllable switch unit 10, so that controllable open
Close unit 10 and be maintained at current state, prevent that switch power module 100 from damaging because of overvoltage.
Further, according to one embodiment of present invention, as shown in figure 1, controllable switch unit 10 includes relay, after
Electrical equipment includes the first contact 1, the second contact 2, the 3rd contact 3 and coil L, and the first contact 1 is connected with AC power AC one end,
Second contact 2 is connected with holding unit 40, the 3rd contact 3 respectively with overvoltage detection unit 20 and switch power module 100
First input end is connected, the second input and holding unit of the AC power AC other end respectively with switch power module 100
40 are connected, and coil L is connected with trigger control unit 30 and holding unit 40 respectively.
Wherein, when the first contact 1 is connected with the 3rd contact 3, AC power AC is normally powered to washing machine；When
When one contact 1 is connected with second contact 2, AC power AC disconnects the power supply to washing machine.
Specifically, when AC power AC voltages are normal, normally-closed contact (i.e. the 3rd contact 3) closure of relay, exchange
Power supply AC is normally powered by normally-closed contact to washing machine.Meanwhile, overvoltage detection unit 20 is real-time by normally-closed contact
Detect that AC power AC whether there is overvoltage, if AC power AC has overvoltage, the normally-closed contact of relay disconnects,
Normally opened contact (i.e. the second contact 2) is closed, so that power supplies of the AC power AC to Washing machine switch power module 100 is cut off, with
Prevent the Switching Power Supply 100 of washing machine because overvoltage is damaged.
To make user be apparent that whether the supply voltage of washing machine is normal, according to one embodiment of present invention,
As shown in figure 1, the overvoltage crowbar of above-mentioned washing machine can also include the Tip element 60 of voltage conversion unit 50 and first.
Voltage conversion unit 50 is connected with the 3rd contact 3, voltage conversion unit 50 be used to changing AC power AC voltage with
Export the first direct current and supply the first Tip element 60, the first Tip element 60 sends AC power AC and is in carrying for normal condition
Show information.
Specifically, when AC power AC voltages are normal, the 3rd contact 3 of relay is closed, and voltage conversion unit 50 can
So that the alternating current of AC power AC output is converted into the first direct current to be powered to the first Tip element 60, so that first
Tip element 60 can send prompt message, to remind user's AC power AC to be in normal condition.
In an embodiment of the present invention, as shown in figure 1, voltage conversion unit 50 may include：First diode D1, the first electricity
Hinder R1, the second diode D2, second resistance R2 and the first electrochemical capacitor C1.
Wherein, the first diode D1 anode is connected with the 3rd contact 3, first resistor R1 one end and the first diode D1
Negative electrode be connected.The second diode D2 anode first resistor R1 other end is connected, and second resistance R2 one end is respectively with the
Two diode D2 anode is connected with the first resistor R1 other end, the second resistance R2 other end and the second diode D2 the moon
The second end for being extremely connected and forming first node Q1, first node Q1 and coil L is connected.First electrochemical capacitor C1 positive terminal with
Second diode D2 anode is connected, the first electrochemical capacitor C1 negative pole end ground connection.Wherein, first resistor R1 resistance can be
47K Ω, it is allowed to deviation 5%, the resistance of second resistance can be 470 Ω, and the first electrochemical capacitor C1 parameter can be 0.47uF/
400V。
First Tip element 60 may include：First voltage-stabiliser tube DZ1 and the first LED 1.First voltage-stabiliser tube DZ1
Positive terminal of the negative electrode respectively with the second diode D2 anode, second resistance R2 one end and the first electrochemical capacitor C1 be connected.
The anode of first LED 1 is connected with the first voltage-stabiliser tube DZ1 anode, and the negative electrode of the first LED 1 connects
Ground.Wherein, the first voltage-stabiliser tube DZ1 burning voltage can be 30V.
Specifically, when AC power AC is in normal condition, the normally-closed contact closure of relay, AC power AC passes through
Normally-closed contact is powered to switch power module 100.Meanwhile, the alternating current that the first diode D1 exports AC power AC carries out half
Ripple rectification, and by first resistor R1 output ripples direct current to the first electrochemical capacitor C1, to be charged to C1.When C1 electricity
When pressure is increased to 30V, the first voltage-stabiliser tube DZ1 reverse breakdowns conducting, so that the conducting of the first LED 1 is luminous, to carry
Show that user's AC power AC is in normal condition.And second diode D2 first node Q1 voltage can be made also to be maintained at 30V.
Further, in an embodiment of the present invention, as shown in figure 1, overvoltage detection unit 20 may include：3rd resistor
R3, the 4th resistance R4, the 5th resistance R5 and the second electrochemical capacitor C2.
Wherein, 3rd resistor R3 one end is connected with the first diode D1 negative electrode, the 4th resistance R4 one end and the 3rd
The resistance R3 other end is connected.5th resistance R5 one end is connected with the 4th resistance R4 other end and forms Section Point Q2,
5th resistance R5 other end ground connection.Second electrochemical capacitor C2 positive terminal is connected with Section Point Q2, the second electrochemical capacitor C2
Negative pole end be connected with the 5th resistance R5.
Trigger control unit 30 may include：6th resistance R6, the second LED 2, IGCT T, the 3rd electrolysis electricity
Hold C3, the 7th resistance R7 and the second voltage-stabiliser tube DZ2.
Wherein, the 6th resistance R6 one end is connected with first node Q1, the anode and the 6th of the second LED 2
The resistance R6 other end is connected, and the negative electrode of the second LED 2 is connected with coil L first end.The first of IGCT T
End is connected with the negative electrode of the second LED 2 and coil L first end respectively, IGCT T the second end ground connection.3rd
Electrochemical capacitor C3 positive terminal is connected with IGCT T control end, the 3rd electrochemical capacitor C3 negative pole end and the second of IGCT T
End is connected.7th resistance R7 is in parallel with the 3rd electrochemical capacitor C3.Second voltage-stabiliser tube DZ2 anode and IGCT T control end phase
Even, the second voltage-stabiliser tube DZ2 negative electrode is connected with Section Point Q2.
Holding unit 40 may include：8th resistance R8, the first electric capacity C, the resistance R9 of rectifier bridge 401 and the 9th.Wherein, the 8th
Resistance R8 one end is connected with the second contact Q2, and the first electric capacity C one end is connected with the 8th resistance R8 other end.Rectifier bridge
401 first input end is connected with the first electric capacity C other end, and the second input of rectifier bridge 401 is another with AC power AC's
One end is connected, and the first output end of rectifier bridge 401 is connected with the first electric capacity C one end and the 8th resistance R8 other end respectively,
Second output head grounding of rectifier bridge 401.
In an embodiment of the present invention, it can be 47K Ω/5%, 10K that R3, R4 and R5 resistance and tolerance, which are distinguished,
Ω/5% and 4.7K Ω/5%, C2 parameter can be that 4.7uF/16V, R6 and R7 resistance and tolerance can be respectively 2K
Ω/5% and 100K Ω/5%, C3 parameter can be 1uF/50V, and DZ2 burning voltage can be 16V, R8 and R9 resistance
With tolerance respectively can be 100 Ω/5%, 51 Ω/5%, C parameter can be 0.47uF/400V.Rectifier bridge 401 can be with
Realized by model T1ZB60 IC (Integrated Circuit, integrated circuit) chip.
Specifically, when AC power AC is in normal condition, the normally-closed contact closure of relay, Section Point Q2 inspection
Survey voltage to be filtered by C2, form galvanic current pressure, this voltage is less than 16V, therefore DZ2 will not be caused reversely to lead
It is logical.And if AC power AC voltage exceedes predeterminated voltage, then Section Point Q2 detection voltage can be raised in 16V, so that
Can make DZ2 reverse-conductings, IGCT T triggering and conductings, so make it is electric on relay coil L, the of the actuating of relay, i.e. relay
Three contacts 3 are disconnected, and the second contact 2 is closed, thus, power supplies of the AC power AC to switch power module 100 can be cut off, with split
Powered-down source module 100 is protected.Now, alternating current is after R8, C and the rectifying and wave-filtering of rectifier bridge 401, by substituting Q1 after R9 current limlitings
The voltage of point, coil L, the working condition of guard relay are given to provide specific voltage.Meanwhile, the voltage of Q1 points also passes through R2
C1 is charged, C1 voltage is lifted, is that the overvoltage protection of next time is prepared.Also, after the actuating of relay, LED2 is led
It is logical luminous, to point out user's AC power AC to be in overvoltage condition, meanwhile, due to being supplied without loop to LED1 after the actuating of relay
Electricity, therefore LED1 do not light.
To make user quickly judge the overvoltage failure of washing machine, LED1 can use the light emitting diode of green light,
To represent that AC power AC is normal, LED2 can use the light emitting diode of red light, to represent AC power AC overvoltages.
In summary, the overvoltage crowbar of washing machine according to embodiments of the present invention, is examined by overvoltage detection unit
Survey AC power voltage whether exceed predeterminated voltage, trigger control unit AC power voltage exceed predeterminated voltage when pair
Controllable switch unit is controlled, to cut off power supply of the AC power to washing machine.Thus, it is possible to avoid occurring due to overvoltage
The phenomenon for damaging the switch power module of washing machine, and then washing machine can effectively be protected.In addition, the circuit may be used also
With when AC power is normal, the prompt message that AC power is in normal condition is sent by the first light emitting diode,
When AC power has overvoltage, the prompt message that AC power is in overvoltage condition is sent by the second light emitting diode,
Improve the usage experience of user.
In addition, the present invention also proposes a kind of washing machine, it includes the overvoltage crowbar of above-mentioned washing machine.
Washing machine according to embodiments of the present invention, passes through the Zenith tracking list of the overvoltage crowbar of above-mentioned washing machine
Whether the voltage of member detection AC power exceedes predeterminated voltage, and trigger control unit exceedes predeterminated voltage in the voltage of AC power
When controllable switch unit is controlled, to cut off power supply of the AC power to washing machine.Thus, it is possible to avoid occurring due to mistake
Voltage makes the phenomenon that the switch power module of washing machine is damaged, and improves the reliability of washing machine work.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description, rather than indicate or imply that the device or element of meaning must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect；Can be joined directly together, can also be indirectly connected to by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements, unless otherwise clear and definite restriction.For one of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features are directly contacted, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level 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 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 invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied 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
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (10)
1. a kind of overvoltage crowbar of washing machine, it is characterised in that the overvoltage crowbar is connected to AC power and institute
Between the switch power module for stating washing machine, the overvoltage crowbar includes：
Controllable switch unit, the controllable switch unit is connected with the AC power, and the controllable switch unit is used for defeated
The AC power entered to the washing machine is controlled；
Overvoltage detection unit, the overvoltage detection unit is used to detect whether the voltage of the AC power to exceed default electricity
Pressure；
Trigger control unit, the trigger control unit is used for when the voltage of the AC power exceedes predeterminated voltage to described
Controllable switch unit is controlled, to cut off power supply of the AC power to the washing machine.
2. the overvoltage crowbar of washing machine as claimed in claim 1, it is characterised in that also include：
Holding unit, the holding unit is used to cut off the AC power to the washing machine in the controllable switch unit
The state of the controllable switch unit is kept during power supply.
3. the overvoltage crowbar of washing machine as claimed in claim 2, it is characterised in that the controllable switch unit include after
Electrical equipment, the relay includes the first contact, the second contact, the 3rd contact and coil, first contact and the alternating current
The one end in source is connected, and second contact is connected with the holding unit, the 3rd contact respectively with the Zenith tracking
Unit is connected with the first input end of the switch power module, the other end of the AC power respectively with the Switching Power Supply
Second input of module is connected with the holding unit, the coil respectively with the trigger control unit and the holding list
Member is connected, wherein,
When first contact is connected with the 3rd contact, the AC power is normally powered to the washing machine；
When first contact is connected with second contact, the AC power disconnects the power supply to the washing machine.
4. the overvoltage crowbar of washing machine as claimed in claim 3, it is characterised in that also including voltage conversion unit and
One Tip element, the voltage conversion unit is connected with the 3rd contact, and the voltage conversion unit is used for the exchange
The voltage of power supply is changed supplies first Tip element to export the first direct current, and first Tip element sends institute
State the prompt message that AC power is in normal condition.
5. the overvoltage crowbar of washing machine as claimed in claim 4, it is characterised in that the voltage conversion unit includes：
First diode, the anode of first diode is connected with the 3rd contact；
First resistor, one end of the first resistor is connected with the negative electrode of first diode；
Second diode, the anode of second diode is connected with the other end of the first resistor；
Second resistance, one end of the second resistance is another with the anode of second diode and the first resistor respectively
End is connected, and the other end of the second resistance is connected with the negative electrode of second diode and forms first node, described first
Node is connected with the second end of the coil；
First electrochemical capacitor, the positive terminal of first electrochemical capacitor is connected with the anode of second diode, and described first
The negative pole end ground connection of electrochemical capacitor.
6. the overvoltage crowbar of washing machine as claimed in claim 5, it is characterised in that first Tip element includes：
First voltage-stabiliser tube, the negative electrode of first voltage-stabiliser tube anode respectively with second diode, the second resistance
One end is connected with the positive terminal of first electrochemical capacitor；
First light emitting diode, the anode of first light emitting diode is connected with the anode of first voltage-stabiliser tube, and described
The minus earth of one light emitting diode.
7. the overvoltage crowbar of washing machine as claimed in claim 5, it is characterised in that the overvoltage detection unit bag
Include：
3rd resistor, one end of the 3rd resistor is connected with the negative electrode of first diode；
4th resistance, one end of the 4th resistance is connected with the other end of the 3rd resistor；
5th resistance, one end of the 5th resistance is connected with the other end of the 4th resistance and forms Section Point, described
The other end ground connection of 5th resistance；
Second electrochemical capacitor, the positive terminal of second electrochemical capacitor is connected with the Section Point, second electrochemical capacitor
Negative pole end be connected with the 5th resistance.
8. the overvoltage crowbar of washing machine as claimed in claim 7, it is characterised in that the trigger control unit includes：
6th resistance, one end of the 6th resistance is connected with the first node；
Second light emitting diode, the anode of second light emitting diode is connected with the other end of the 6th resistance, and described
The negative electrode of two light emitting diodes is connected with the first end of the coil；
IGCT, the negative electrode and the first end of the coil of the first end of the IGCT respectively with second light emitting diode
It is connected, the second end ground connection of the IGCT；
3rd electrochemical capacitor, the positive terminal of the 3rd electrochemical capacitor is connected with the control end of the IGCT, the 3rd electricity
The negative pole end of solution electric capacity is connected with the second end of the IGCT；
7th resistance, the 7th resistance is in parallel with the 3rd electrochemical capacitor；
Second voltage-stabiliser tube, the anode of second voltage-stabiliser tube is connected with the control end of the IGCT, second voltage-stabiliser tube
Negative electrode is connected with the Section Point.
9. the overvoltage crowbar of washing machine as claimed in claim 5, it is characterised in that the holding unit includes：
8th resistance, one end of the 8th resistance is connected with second contact；
First electric capacity, one end of first electric capacity is connected with the other end of the 8th resistance；
Rectifier bridge, the first input end of the rectifier bridge is connected with the other end of first electric capacity, and the second of the rectifier bridge
Input is connected with the other end of the AC power, the first output end of the rectifier bridge respectively with first electric capacity one
End is connected with the other end of the 8th resistance, the second output head grounding of the rectifier bridge；
9th resistance, one end of the 9th resistance is connected with the first output end of the rectifier bridge, the 9th resistance it is another
One end is connected with the first node.
10. a kind of washing machine, it is characterised in that include the overvoltage protection electricity of the washing machine as any one of claim 1-9
Road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710173877.4A CN106953298B (en) | 2017-03-22 | 2017-03-22 | Washing machine and its overvoltage crowbar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710173877.4A CN106953298B (en) | 2017-03-22 | 2017-03-22 | Washing machine and its overvoltage crowbar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106953298A true CN106953298A (en) | 2017-07-14 |
| CN106953298B CN106953298B (en) | 2019-07-19 |
Family
ID=59473378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710173877.4A Active CN106953298B (en) | 2017-03-22 | 2017-03-22 | Washing machine and its overvoltage crowbar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106953298B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2375021Y (en) * | 1999-05-28 | 2000-04-19 | 董世荣 | Overvoltage safety protector for electrical appliances |
| CN204068197U (en) * | 2014-09-17 | 2014-12-31 | 国家电网公司 | The under-voltage overvoltage automatic protection circuit of a kind of civil power |
| CN204190353U (en) * | 2014-11-16 | 2015-03-04 | 毕然成 | A kind of household electrical appliance automatic overvoltage power off device |
| CN204204779U (en) * | 2014-11-14 | 2015-03-11 | 华南理工大学 | With the residual current circuit breaker of over-voltage protecting function |
| US20150236483A1 (en) * | 2012-08-28 | 2015-08-20 | Jaromir Suchy | Triggering circuit of the overvoltage protection |
| CN104898732A (en) * | 2015-04-13 | 2015-09-09 | 成都诚邦动力测试仪器有限公司 | Engine oil constant temperature automatic control system with over-voltage protection function |
| CN105098721A (en) * | 2014-04-16 | 2015-11-25 | 南京南瑞继保电气有限公司 | Overvoltage protection circuit and overvoltage protection method for converter sub-module |
-
2017
- 2017-03-22 CN CN201710173877.4A patent/CN106953298B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2375021Y (en) * | 1999-05-28 | 2000-04-19 | 董世荣 | Overvoltage safety protector for electrical appliances |
| US20150236483A1 (en) * | 2012-08-28 | 2015-08-20 | Jaromir Suchy | Triggering circuit of the overvoltage protection |
| CN105098721A (en) * | 2014-04-16 | 2015-11-25 | 南京南瑞继保电气有限公司 | Overvoltage protection circuit and overvoltage protection method for converter sub-module |
| CN204068197U (en) * | 2014-09-17 | 2014-12-31 | 国家电网公司 | The under-voltage overvoltage automatic protection circuit of a kind of civil power |
| CN204204779U (en) * | 2014-11-14 | 2015-03-11 | 华南理工大学 | With the residual current circuit breaker of over-voltage protecting function |
| CN204190353U (en) * | 2014-11-16 | 2015-03-04 | 毕然成 | A kind of household electrical appliance automatic overvoltage power off device |
| CN104898732A (en) * | 2015-04-13 | 2015-09-09 | 成都诚邦动力测试仪器有限公司 | Engine oil constant temperature automatic control system with over-voltage protection function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106953298B (en) | 2019-07-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102544930B (en) | Leakage protection plug | |
| CN107294059B (en) | Use electric detection means | |
| CN106711938A (en) | Leakage protector | |
| CN108093523B (en) | The control circuit and power supply of AC dump and light modulation shutdown | |
| CN102354869B (en) | Electricity leakage protection plug with alarm device | |
| CN202183530U (en) | Electric leakage protection plug with alarming device | |
| CN112383041A (en) | Wiring protection method, circuit and device and household appliance | |
| CN107658857A (en) | A kind of switch power over-voltage protection circuit and method | |
| CN208299684U (en) | High power switching power supply anti-surge circuit | |
| CN201075364Y (en) | Multifunctional phase-interruption leakage circuit breaker for three-phase motor | |
| CN106953298A (en) | Washing machine and its overvoltage crowbar | |
| CN102255277A (en) | Leakage detection protection circuit | |
| CN201966581U (en) | Electric leakage detection and protection circuit | |
| CN102324718B (en) | Power leakage protector | |
| CN206432694U (en) | Earth leakage protective device | |
| CN205622203U (en) | With electric detection means and electric jointing equipment | |
| CN104836189B (en) | It is a kind of can Self-resetting and remote reset electric protective device and its method | |
| CN209526293U (en) | Three pole on-off leakage protecting plug of semi-intelligent | |
| CN208241303U (en) | Three pole on-off leakage protecting plug of intelligent control type | |
| CN103681094B (en) | A kind of vacuum circuit breaker control circuit and system | |
| CN205829133U (en) | Earth leakage protective device voltage protection | |
| CN108306257A (en) | Three pole break-make leakage protecting plug of intelligent control type | |
| CN201490684U (en) | Leakage detection protective circuit | |
| CN205141287U (en) | Can change ground wire protected mode's leakage protection plug | |
| CN209896680U (en) | Circuit for realizing self-checking of leakage protector |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |