CN101179169A - Refrigerator with creepage protection function - Google Patents
Refrigerator with creepage protection function Download PDFInfo
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- CN101179169A CN101179169A CNA200610137879XA CN200610137879A CN101179169A CN 101179169 A CN101179169 A CN 101179169A CN A200610137879X A CNA200610137879X A CN A200610137879XA CN 200610137879 A CN200610137879 A CN 200610137879A CN 101179169 A CN101179169 A CN 101179169A
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- breaker
- line
- dropout
- plug
- refrigerator
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- 230000001681 protective effect Effects 0.000 claims description 26
- 238000012360 testing method Methods 0.000 claims description 20
- 238000004804 winding Methods 0.000 claims description 16
- 230000015556 catabolic process Effects 0.000 claims description 4
- 235000014676 Phragmites communis Nutrition 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 12
- 229910052710 silicon Inorganic materials 0.000 description 12
- 239000010703 silicon Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention relates to a refrigerator, in particular to a refrigerator with the performance of leakage protection. A plug of leakage protection is arranged on a power line of the refrigerator, which cuts off electricity in case of leakage on a live wire, thus protecting human body and devices without affecting the application of other electric appliances.
Description
Technical field
The present invention relates to a kind of refrigerator, particularly a kind of refrigerator with creepage protection function.
Background technology
Refrigerator brings convenience to family life, has reduced waste, has improved quality of life.Unit earth leakage protective problem for refrigerator does not also obtain the due attention of compatriots; the earth leakage protective of household electrical appliance both had been related to the normal use of electrical appliance; be related to personal safety again, up to the present also do not find the Chinese patent application that portion has the refrigerator of creepage protection function.
The live wire electric leakage of existing refrigerator all is to be abutted against ground wire to protect personal safety; generally be that residual current circuit breaker is installed in power supply in the electric mounting box between the line; in case electric leakage appears in a certain electrical appliance; fast and automatically cut off the electricity supply by residual current circuit breaker, guarantee electrical appliance and personal safety.Deficiency is: because the protection of this leakage, breaking is at whole subscriber line circuit; therefore; when electric leakage appears in a certain electrical appliance, just whole user's power circuit can be cut off, have influence on the continuation operate as normal of other all electrical appliances that should normally use.And, mostly do not have earth connection in vast rural area, and do not have the power supply box of residual current circuit breaker yet, add the basic general knowledge that lacks safety utilization of electric power, in case taking place, electric leakage will cause personal equipment injury, consequence is hardly imaginable.
For solving above-mentioned deficiency; multiple leakage protecting plug 20 its structures that plug and earth leakage protective device are combined as a whole had been arranged already as shown in Figure 1, 2; described leakage protecting plug 20 is three plugs that are provided with phase line, zero line and earth connection in the one side of plug box; promptly have three latches, phase line 21, zero line 22 and earth connection 23 in described three latches difference socket power socket.Be provided with reset button 6 and the indicator light LD that resets after the testing button 8 that detects the leakage protecting plug function, the fault in the another side of described leakage protecting plug 20.Whether the testing button 8 of described function is used to detect leakage protecting plug can operate as normal.Refrigerator is being installed, before the startup refrigerator of connecting with the mains, must be earlier by pushing testing button 8, the people is the leakage current that causes a nominal amount, detects the tripping operation of whether cutting off the power supply under the electric leakage situation.
But, this leakage protecting plug that plug and earth leakage protective device are combined as a whole, in use, the problem that causes plug and earth leakage protective device to burn simultaneously because of plugs and sockets loose contact heating through regular meeting.
Summary of the invention
Technical problem to be solved by this invention is; above-mentioned deficiency at prior art; a kind of refrigerator with creepage protection function is provided; on the power line of refrigerator, increase a leakage protecting plug; described leakage protecting plug is to be made of plug and earth leakage protective device, and has the distance greater than 15cm between described plug and the earth leakage protective device.When live wire leaked electricity, leakage protecting plug will cut off the power supply, thereby played the function of the protection person and device security, and can not influence the use of other electrical appliances.If plug and socket loose contact, the also problem that can not generate heat simultaneously plug and earth leakage protective device are burnt because of plug.
The technical scheme of the refrigerator with creepage protection function provided by the present invention is as follows:
A kind of refrigerator with creepage protection function; comprise power line and be connected to leakage protecting plug on the power line; it is characterized in that: described leakage protecting plug is to be made of plug and earth leakage protective device, and connects with the lead of length greater than 15cm between described plug and the earth leakage protective device.
Except that above-mentioned essential features, in specific implementation process, also can replenish following technology contents:
Described refrigerator with creepage protection function is characterized in that: described leakage protecting plug is the current mode leakage protecting plug.
Described refrigerator with creepage protection function is characterized in that: described leakage protecting plug is three plugs with phase line, zero line and earth connection.
Described refrigerator with creepage protection function is characterized in that: be provided with the reset button that resets after the testing button that detects the leakage protecting plug function and the fault in described leakage protecting plug.
Described refrigerator with creepage protection function is characterized in that: described leakage protecting plug comprises: plug body and phase, zero, three utmost point latches, current transformer, testing circuit, comparison amplifying circuit, DC power supply, dropout breaker; Wherein: current transformer is sheathed on the earth connection, the secondary winding of current transformer connects the comparison amplifying circuit, detected ground line current signal and set point are compared,, then export a triggering signal through the action of switching circuit control dropout breaker if surpass set point; The input of described DC power supply is connected between phase line and the zero line, and output connects the comparison amplifying circuit and connects the dropout breaker through switching circuit.
Described refrigerator with creepage protection function is characterized in that: described leakage protecting plug comprises: plug body and phase, zero, three utmost point latches, current transformer, testing circuit, amplifying circuit, DC power supply, dropout breaker; Wherein: current transformer is sheathed on phase line and the zero line, the secondary winding of current transformer connects the comparison amplifying circuit, with electric current signal difference and set point on detected phase line and the zero line relatively, if surpass set point, then export a triggering signal through the action of switching circuit control dropout breaker; The input of described DC power supply is connected between phase line and the zero line, and output connects the comparison amplifying circuit and connects the dropout breaker through switching circuit.
Described refrigerator with creepage protection function is characterized in that: the reset switch on the described leakage protecting plug connects described dropout breaker, after fixing a breakdown, pushes reset switch, makes the dropout breaker reset.
Described refrigerator with creepage protection function is characterized in that: described dropout breaker is provided with one can connect the ground connection sequence unit of connecting disconnected ground wire behind phase, zero line or the first phase failure, the zero line behind the ground wire earlier.
Described refrigerator with creepage protection function is characterized in that: described ground connection sequence unit is made up of a pair of ground wire contact, spring, breaker, and this spring is connected between breaker and the ground wire moving contact reed mutually.
Described refrigerator with creepage protection function is characterized in that: described testing button is connected between phase line and the ground wire.
Described refrigerator with creepage protection function is characterized in that: described leakage protecting plug is provided with an indicator light.
Remarkable result of the present invention is:
1. use leakage protecting plug on the power line of refrigerator, plug will trip when refrigerator produces electric leakage, and refrigerator is outage just.
2, used leakage protecting plug; no matter be that breakdown of refrigerator causes between phase, zero utmost point and residual current occurs and reach a certain set point; still electric current makes electric appliance casing charged because the order of unexpected factor should uncharged ground wire be broken down; can both cut off power supply entirely immediately, its effect is equivalent to automatically plug be separated from socket.When for example the 15mA leakage current occurring because of any fault, it can be at 0.1 second internal cutting off power supply, thereby ensures user's personal safety, reaches the purpose of omnibearing protection.
3, before fault is not got rid of, can not restore electricity, after only fixing a breakdown, could reset with manual mode, recover normal power supply.
4, can prevent electricity consumption lack of standardization, when the misconnection power supply can cut off the power supply immediately.Can ensure user security.
5, in the time of can guaranteeing that the user uses refrigerator in the rural area, electric shock accidents can not take place take place.
If 6 plug and socket loose contact, also the problem that can not generate heat simultaneously plug and earth leakage protective device are burnt because of plug.
7,, therefore, do not have the problem of simultaneously plug and earth leakage protective device being burnt because of the plug heating owing to connect with the lead of length between described plug and the earth leakage protective device greater than 15cm.
For architectural feature of the present invention and effect thereof are had further understanding, enumerate specific embodiment now and be described with reference to the accompanying drawings as follows.
Description of drawings
Fig. 1 is the existing front view that plug is protected in electric leakage that has.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is that the present invention has the front view that plug is protected in electric leakage.
Fig. 4 is the vertical view of Fig. 3.
Fig. 5 is the refrigerator schematic diagram that the present invention has creepage protection function.
Fig. 6 is a kind of enforcement illustration of the earth leakage protective device in the used leakage protecting plug.
Fig. 7 is that the another kind of the earth leakage protective device in the used leakage protecting plug is implemented illustration.
Fig. 8 is another enforcement illustration of the earth leakage protective device in the used leakage protecting plug.
Embodiment
Shown in Figure 5 is the refrigerator schematic diagram with creepage protection function provided by the present invention; the plug 30 and the earth leakage protective device 20 ' that comprise power line 10, be connected on the power line constitute, and connect with the lead of length greater than 15cm between described plug 30 and the earth leakage protective device 20 '.
The profile of described leakage protecting plug 20 is shown in Fig. 3,4; described plug 30 is with existing to have three plugs identical; be three plugs, promptly have three latches, phase line, zero line and earth connection in described three latches difference socket power socket with phase line, zero line and earth connection.
The reset button 6 and the indicator light LD that after the testing button 8 that is provided with detection leakage protecting plug function on the plug in device 20 ' of described earth leakage protective equally, fault, reset.Whether the testing button 8 of described function is used to detect leakage protecting plug can operate as normal.Refrigerator is being installed, before the startup refrigerator of connecting with the mains, must be earlier by pushing testing button 8, the people is the leakage current that causes a nominal amount, detects the tripping operation of whether cutting off the power supply under the electric leakage situation.See also Fig. 6; described testing button 8 series connection one adjustable resistor R is connected between plug interior the phase line L and earth connection G; set up the specified leakage current that makes earth leakage protective device 20 ' action by adjustable resistor R; be generally 10～30mA; set point of the present invention is 15mA, and at 0.1 second with interior action.Whether action will be indicated by indicator light LD.After test earth leakage protective is normal, pushes reset button 6 and make normally and connect.
Realize that the used leakage protecting plug of refrigerator with creepage protection function of the present invention has multiple embodiments.
Embodiment one
Fig. 6 is the circuit diagram of a kind of embodiment of the earth leakage protective device in the used leakage protecting plug of the present invention, and described leakage protecting plug comprises: the phase of gang socket, zero, three utmost point latch L, O, G, current transformer 1, testing circuit 2, relatively amplifying circuit 3, DC power supply 4, dropout breaker 5; Wherein: current transformer 1 is sheathed on the earth connection, the secondary winding of current transformer connects comparison amplifying circuit 3, detected ground line current signal and set point are compared,, then export a triggering signal through 5 actions of switching circuit 9 control dropout breakers if surpass set point; The input of described DC power supply 4 is connected between phase line L and the zero line 0, and the AC power transformation is rectified into direct current, and output connects comparison amplifying circuit 3 and connects dropout breaker 5 through switching circuit 9, to relatively amplifying circuit 3 and dropout breaker 5 provide power supply.Described switching circuit 9 is made of auxiliary relay or controllable silicon or other crystal switch pipe, in the diagram specific embodiment, described switching circuit 9 is controllable silicon SCR, the silicon controlled both positive and negative polarity is connected with the magnet exciting coil of dropout breaker 5, be connected to the output of DC power supply 4, the silicon controlled control utmost point connects the output of comparison amplifying circuit 3, by the relatively conducting of amplifying circuit 3 control controllable silicon SCR.When ground line current surpassed set point, relatively amplifying circuit 3 outputs one triggering signal made the controllable silicon conducting, and the magnet exciting coil of dropout breaker 5 gets electric, and the refrigerator power supply is cut off in the switch contact disjunction of dropout breaker.
In order to make described dropout breaker 5 can guarantee the extremely logical phase in back, zero utmost point or the first phase failure of first earthing, disconnected earth polar, zero extremely back, described dropout breaker 5 is provided with the ground connection sequence unit.Described ground connection sequence unit is to be provided with a spring between zero line, phase line contact and ground wire contact.When the magnet exciting coil of dropout breaker 5 gets electricly, during the switch contact disjunction of dropout breaker, at first be phase, the disjunction of zero utmost point contact elder generation, under the elastic force effect of spring, the disjunction again of contact, earth polar.When pushing reset button 6, earth polar engage contacts before this then is only phase, zero utmost point contact engages under the elastic force effect of spring.
Described current transformer 1 is made up of iron core and secondary winding, and described iron core is made by soft magnetic material, as permalloy or amorphous alloy or ultramicro-crystal alloy material.Ground wire pass iron core or on iron core around some circles as elementary winding.Diode of output series connection of the secondary winding of described current transformer connects comparison amplifying circuit 3.
Described switching circuit 9 is made of auxiliary relay or controllable silicon or other crystal switch pipe, in the diagram specific embodiment, described switching circuit 9 is controllable silicon SCR, the silicon controlled both positive and negative polarity is connected with the magnet exciting coil of dropout breaker 5, be connected to the output of DC power supply 4, the silicon controlled control utmost point connects the output of comparison amplifying circuit 3, by the relatively conducting of amplifying circuit 3 control controllable silicon SCR.When ground line current surpassed set point, relatively amplifying circuit 3 outputs one triggering signal made the controllable silicon conducting, and the magnet exciting coil of dropout breaker 5 gets electric, and the refrigerator power supply is cut off in the switch contact disjunction of dropout breaker.
Embodiment two
Fig. 7 is the circuit diagram of the another kind of embodiment of the earth leakage protective device in the used leakage protecting plug of the present invention.Described leakage protecting plug is the same with embodiment one, comprises equally: the phase of gang socket, zero, three utmost point latch L, O, G, current transformer 1, testing circuit 2, relatively amplifying circuit 3, DC power supply 4, dropout breaker 5; Wherein: the device difference is that described current transformer 1 is sheathed on phase line and the zero line, and the secondary winding of current transformer connects comparison amplifying circuit 3; Under normal circumstances, phase line L equates with size of current on the zero line 0, and the direction of the current transformer magnet ring of flowing through is opposite, cancels out each other in the magnetic field of inducting that is produced in magnet ring; In case generation leakage current, then the electric current on phase line L and the zero line 0 is unequal, the magnetic field of in magnet ring, generation being inducted, because the power supply that connects is 50 all alternating currents, leakage current also is 50 all alternating currents, to produce 50 all alternations magnetic field of inducting in the magnet ring, the secondary winding of current transformer is with the alternating voltage in corresponding 50 weeks of inducting, the secondary winding of current transformer connects comparison amplifying circuit 3 by diode D1, relatively amplifying circuit 3 with electric current signal difference and set point on detected phase line and the zero line relatively, if surpass set point, then export a triggering signal through 5 actions of switching circuit 9 control dropout breakers.
Embodiment three
Fig. 8 is another enforcement illustration of the earth leakage protective device in the used leakage protecting plug of the present invention.The difference of this embodiment and above-mentioned two embodiment is that described current transformer has two, and one is sheathed on phase line and the zero line, and another is sheathed on the earth connection.Described be located on phase line and the zero line the current transformer secondary winding with establish with ground wire on secondary winding twine in the same way or oppositely twine.Described two level windings are connected to the comparison amplifying circuit, the connected mode of two level windings and amplifying circuit relatively can be in the same way, oppositely or the diode of connecting, the number of turn that cooperates both, in order to adjusting the operating value of phase zero current difference and the unexpected electric current of ground wire, adaptation has good earth, imperfect earth or do not have can both action message under the situation of ground connection.
Present embodiment has or not the residual current except detecting between load phase, the zero line, and whether also detect ground wire charged.When two test points break down respectively or simultaneously, all can be immediately phase, zero, the earth polar all disconnects.Reach the effect of separating fully, thereby ensured personal safety effectively with power supply.
Claims (10)
1. refrigerator with creepage protection function; comprise power line and be connected to leakage protecting plug on the power line; it is characterized in that: described leakage protecting plug is to be made of plug and earth leakage protective device, and connects with the lead of length greater than 15cm between described plug and the earth leakage protective device.
2. the refrigerator with creepage protection function according to claim 1 is characterized in that: described leakage protecting plug is the current mode leakage protecting plug.
3. the refrigerator with creepage protection function according to claim 1 is characterized in that: described leakage protecting plug is three plugs with phase line, zero line and earth connection.
4. the refrigerator with creepage protection function according to claim 1 is characterized in that: be provided with the reset button that resets after the testing button that detects the leakage protecting plug function and the fault in described leakage protecting plug; Described testing button is connected between phase line and the ground wire; Described leakage protecting plug is provided with an indicator light.
5. according to claim 1 or 2 or 3 or 4 described refrigerators with creepage protection function, it is characterized in that: described leakage protecting plug comprises: plug body and phase, zero, three utmost point latches, current transformer, testing circuit, comparison amplifying circuit, DC power supply, dropout breaker; Wherein: current transformer is sheathed on the earth connection, the secondary winding of current transformer connects the comparison amplifying circuit, detected ground line current signal and set point are compared,, then export a triggering signal through the action of switching circuit control dropout breaker if surpass set point; The input of described DC power supply is connected between phase line and the zero line, and output connects the comparison amplifying circuit and connects the dropout breaker through switching circuit.
6. according to claim 1 or 2 or 3 or 4 described refrigerators with creepage protection function, it is characterized in that: described leakage protecting plug comprises: plug body and phase, zero, three utmost point latches, current transformer, testing circuit, amplifying circuit, DC power supply, dropout breaker; Wherein: current transformer is sheathed on phase line and the zero line, the secondary winding of current transformer connects the comparison amplifying circuit, with electric current signal difference and set point on detected phase line and the zero line relatively, if surpass set point, then export a triggering signal through the action of switching circuit control dropout breaker; The input of described DC power supply is connected between phase line and the zero line, and output connects the comparison amplifying circuit and connects the dropout breaker through switching circuit.
7. according to claim 1 or 2 or 3 or 4 described refrigerators with creepage protection function, it is characterized in that: described leakage protecting plug comprises: plug body and phase, zero, three utmost point latches, current transformer, testing circuit, amplifying circuit, DC power supply, dropout breaker; Wherein: current transformer is two, one of them is sheathed on phase line and the zero line, another is sheathed on the earth connection, the secondary winding of two current transformers connects the comparison amplifying circuit, with electric current signal difference on detected phase line and the zero line or detected ground line current signal and set point comparison, if surpass set point, then export a triggering signal through the action of switching circuit control dropout breaker; The input of described DC power supply is connected between phase line and the zero line, and output connects the comparison amplifying circuit and connects the dropout breaker through switching circuit.
8. the refrigerator with creepage protection function according to claim 4 is characterized in that: the reset switch on the described leakage protecting plug connects described dropout breaker, after fixing a breakdown, pushes reset switch, makes the dropout breaker reset.
9. according to claim 5 or 6 or 7 described refrigerators with creepage protection function, it is characterized in that: described dropout breaker is provided with one can connect the ground connection sequence unit of connecting disconnected ground wire behind phase, zero line or the first phase failure, the zero line behind the ground wire earlier.
10. the refrigerator with creepage protection function according to claim 9 is characterized in that: described ground connection sequence unit is made up of a pair of ground wire contact, spring, breaker, and this spring is connected between breaker and the ground wire moving contact reed mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200610137879XA CN101179169A (en) | 2006-11-08 | 2006-11-08 | Refrigerator with creepage protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200610137879XA CN101179169A (en) | 2006-11-08 | 2006-11-08 | Refrigerator with creepage protection function |
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| Publication Number | Publication Date |
|---|---|
| CN101179169A true CN101179169A (en) | 2008-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200610137879XA Pending CN101179169A (en) | 2006-11-08 | 2006-11-08 | Refrigerator with creepage protection function |
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| CN (1) | CN101179169A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103311885A (en) * | 2012-03-06 | 2013-09-18 | 海尔集团公司 | Electric leakage protection device |
| CN105958438A (en) * | 2016-04-29 | 2016-09-21 | 广东万家乐燃气具有限公司 | Circuit three-pole disconnecting device |
| CN107293452A (en) * | 2016-04-11 | 2017-10-24 | 中科电力装备科技有限公司 | A kind of new type electric leakageproof device |
| CN111224375A (en) * | 2020-01-05 | 2020-06-02 | 柴世军 | Metering and safety power supply protector |
-
2006
- 2006-11-08 CN CNA200610137879XA patent/CN101179169A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103311885A (en) * | 2012-03-06 | 2013-09-18 | 海尔集团公司 | Electric leakage protection device |
| CN103311885B (en) * | 2012-03-06 | 2015-11-25 | 海尔集团公司 | Earth leakage protective device |
| CN107293452A (en) * | 2016-04-11 | 2017-10-24 | 中科电力装备科技有限公司 | A kind of new type electric leakageproof device |
| CN105958438A (en) * | 2016-04-29 | 2016-09-21 | 广东万家乐燃气具有限公司 | Circuit three-pole disconnecting device |
| CN111224375A (en) * | 2020-01-05 | 2020-06-02 | 柴世军 | Metering and safety power supply protector |
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Open date: 20080514 |