CN1556272A - Universal electric shockproof wall device of switch tube contrlled electric heating washer - Google Patents
Universal electric shockproof wall device of switch tube contrlled electric heating washer Download PDFInfo
- Publication number
- CN1556272A CN1556272A CNA2003101239882A CN200310123988A CN1556272A CN 1556272 A CN1556272 A CN 1556272A CN A2003101239882 A CNA2003101239882 A CN A2003101239882A CN 200310123988 A CN200310123988 A CN 200310123988A CN 1556272 A CN1556272 A CN 1556272A
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- CN
- China
- Prior art keywords
- ground wire
- electric heating
- relay
- wall device
- washing machine
- 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.)
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- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
An electric shock preventing device universal for the switch transistor controlled electrically heated washer features that a transformer or resistor-capacitor step-down circuit is connected between ground line and zero line, the relay connected to it is controlled by a switch consistor controlled by the potential difference between ground line and zero line, and when ground is electrified, the ground and live line are cut off immediately.
Description
Anti-electric wall technology when technical field patent of the present invention belongs to the application of electronic technology field and is particularly related to heater ground wire and basic insulation and lost efficacy simultaneously.
The related electric heating warming washing machine of background technology patent of the present invention is meant water is heated to electric heating warming washing machine below the boiling point.
As everyone knows, it must be reliably that electric heating warming washing machine product standard requires the ground connection in the user family, and the standard plug that the band ground wire also is housed in its product is for linking to each other good with assurance ground connection with ground wire in the socket.And in China, power utilization environment is poor, and the ground connection of many buildings is insecure, or even lack.In this case, qualified electric heating warming washing machine can not guarantee user's safety.The anti-electric wall technology that patent of the present invention relates to is special in China's actual conditions, is intended to guarantee under unsafe power utilization environment user's safety.And in patent application of the present invention a few days ago, the electric heating warming washing machine does not have the personal safety protector that cut off ground wire and heating unit power when ground wire and basic insulation lost efficacy simultaneously in real time, brings potential safety hazard for the user who does not have good earth.
The purpose of summary of the invention patent of the present invention is exactly to overcome the shortcoming that the above-mentioned prior art of electric heating warming washing machine exists, providing a kind of had when this heater ground wire and basic insulation lost efficacy simultaneously, can cut off the power supply of ground wire and heater in real time, even under dangerous power utilization environment, also can guarantee user's safety.The relay circuit of patent of the present invention guarantees that simultaneously the electric heating warming washing machine recovers or do not influence normal use when ground wire is not charged.
Patent of the present invention solves the technical scheme that its technical problem adopts: patent of the present invention is provided with cross-over connection in ground wire E
INAnd the potential difference detecting device between zero line N, this installs by transformer T or capacitance-resistance R
1C
1Step-down, D
1～D
4Diode rectification, capacitor C
0, voltage-stabiliser tube DW and switching tube Q
0Form, be connected relay J with the relay executive circuit
1, J
2Normally-closed contact connect ground wire E respectively
INAnd E
OUTLive wire L
INAnd L
OUTQ when ground wire electrification
0To connected relay J
1, J
2Low level signal is provided, drives relay work, cut off the ground wire E that is serially connected in the relay normally-closed contact in real time
INAnd E
OUT, live wire L
INAnd L
OUT
Description of drawings 0 is the electrical schematic diagram of patent of the present invention.E among the figure
INBe ground wire end of incoming cables, E
OUTBe the ground wire leading-out terminal, promptly link to each other with the heater earth terminal; L
INBe live wire end of incoming cables, L
OUTBe the live wire leading-out terminal, promptly link to each other with heater live wire end that N is a zero line, 12V is the 12V dc source.The related electric heating warming washing machine of patent of the present invention refers to the electric washer with the washing clothes of hot-water heating system, also is applicable to the electric washer of not being with hot-water heating system, dewater unit or clothes-drying device to need the washing clothes of good earth.
The specific embodiment
Cross-over connection is in zero line N and ground wire E
INBetween potential difference detecting device by transformer T or capacitance-resistance electrical equipment R
1C
1(dotted portion) step-down, D
1～D
4Diode rectification, capacitor C
0, voltage-stabiliser tube DW and switching tube Q
0(present embodiment is 9013) formed.Switching tube Q
0Respectively with relay J
1J
2Link to each other relay J
1, J
2Normally-closed contact connects ground wire E
INAnd E
OUT, L
INAnd L
OUT
Claims (2)
1, a kind of general electricity-preventing wall device of electric heating warming washing machine of switch controlled, its principal character is to be provided with cross-over connection ground wire E
INAnd the potential difference detecting device between zero line N, this device is connected relay J with the relay executive circuit
1J
2Normally-closed contact connect ground wire E respectively
INAnd E
OUT, live wire L
INAnd L
OUT
2, the general electricity-preventing wall device of electric heating warming washing machine of switch controlled according to claim 1 is characterized in that cross-over connection ground wire E
INAnd the potential difference detecting device between zero line N is by transformer T or capacitance-resistance R
1C
1Step-down, D
1～D
4Diode rectification, capacitor C
0, voltage-stabiliser tube DW and switching tube Q
0Form.Q when ground wire electrification
0To connected relay J
1, J
2Low level signal is provided, drives relay work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101239882A CN1556272A (en) | 2003-12-30 | 2003-12-30 | Universal electric shockproof wall device of switch tube contrlled electric heating washer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101239882A CN1556272A (en) | 2003-12-30 | 2003-12-30 | Universal electric shockproof wall device of switch tube contrlled electric heating washer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1556272A true CN1556272A (en) | 2004-12-22 |
Family
ID=34338944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2003101239882A Pending CN1556272A (en) | 2003-12-30 | 2003-12-30 | Universal electric shockproof wall device of switch tube contrlled electric heating washer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1556272A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102746082A (en) * | 2011-04-20 | 2012-10-24 | 中国石油化工股份有限公司 | Production method of ethylene and propylene |
-
2003
- 2003-12-30 CN CNA2003101239882A patent/CN1556272A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102746082A (en) * | 2011-04-20 | 2012-10-24 | 中国石油化工股份有限公司 | Production method of ethylene and propylene |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |