CN2748832Y - Switching tube controlled universal electricity-proof wall of instant heating electric water heaters - Google Patents
Switching tube controlled universal electricity-proof wall of instant heating electric water heaters Download PDFInfo
- Publication number
- CN2748832Y CN2748832Y CN 200320111855 CN200320111855U CN2748832Y CN 2748832 Y CN2748832 Y CN 2748832Y CN 200320111855 CN200320111855 CN 200320111855 CN 200320111855 U CN200320111855 U CN 200320111855U CN 2748832 Y CN2748832 Y CN 2748832Y
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- CN
- China
- Prior art keywords
- switching tube
- relay
- wire
- electric water
- ground wire
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a universal electricity-proof wall of an instant heating type electric water heater controlled by a switching tube, and belongs to the electronic technology application field, which comprises a zero wire and earth wire voltage detection apparatus and an executive circuit for relay. The utility model is characterized in that a transformer or a resistance-capacitance voltage reducing circuit is connected between the earth wire and the zero wire; a switching tube is used for controlling the connection and the disconnection of a relay connected with the switch tube, and is controlled by the electric potential difference signals between the zero line and the earth wire; the earth wire and a live wire can be cut off on the occasion that the earth wire is charged. The electricity-proof wall technology related to the utility model can cut off the charged earth wire in real time when the earth wire and the basic insulation of the instant heating type electric water heater are failed simultaneously, and aim to conduct the protection of personal safety on the occasion that the earthing of the instant heating electric water heater is unreliable or the earth wire is failed.
Description
Technical field belongs to electronic technology in the electrical equipment control Application for Field.
The described instant electric water heater of background technology the invention is meant the electric heater that the instant-heating mode of use electric heating tube is used.But no matter be abroad directly to introduce or domesticly produce voluntarily, the earth wire charged protecting when its product all lacks ground wire and basic insulation and lost efficacy simultaneously brings to fall into for user's safety and suffers from.
As everyone knows, the ground connection in instant electric water heater's standard-required user family must be reliably, 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 instant electric water heater can not guarantee user's safety.The anti-electric wall technology that the invention relates to is special in China's actual conditions, is intended to guarantee under unsafe power utilization environment user's safety.And before the invention application, the instant electric water heater does not have the personal safety protector that cut off ground wire and instant electric water heater's power supply when ground wire and basic insulation lost efficacy simultaneously in real time.
The purpose of summary of the invention the invention just provides a kind of general electricity-preventing wall device of instant electric water heater of switch controlled.
The invention solves the technical scheme that its technical problem adopts: comprise Zero-liue voltage check device and relay executive circuit; Be connected to transformer or resistance-capacitance depressurization circuit between ground wire and zero line, by the break-make of the connected relay of switch controlled, switching tube is controlled by the potential difference signal of Zero-liue, cuts off ground wire and live wire when ground wire electrification in real time.The potential difference detecting device of cross-over connection between ground wire and zero line is made up of transformer or resistance-capacitance depressurization circuit, switching tube, and the switching tube output is connected with the relay executive circuit, and often the opening of relay, normally-closed contact connect live wire and ground wire respectively; Switching tube provides low storage battery signal to the relay of its connection when ground wire electrification, drives relay work.
The beneficial effect of the invention is: the ground wire of the formula of promptly the holding electric heater that the invention relates to and basic insulation can cut off the anti-electric wall technology of charged ground wire in real time when losing efficacy simultaneously, were intended under the unreliable or earth wire failure environment of instant electric water heater's ground connection personal safety protection.
Description of drawings Fig. 1 is the electrical schematic diagram of the invention.
Embodiment is consulted Fig. 1.Among the figure.Cross-over connection is in zero line N and ground wire E
INBetween potential difference detecting device by transformer T or R
1C
1(dotted portion) step-down, D
1～D
4Diode rectification, capacitor C
0, voltage-stabiliser tube DW and switching tube Q
0Form present embodiment Q
0Be 9013.Switching tube 9013 respectively with relay J
1, J
2Link to each other relay J
1, J
2Normally closed, often open and get an electric shock to connect ground wire in-out end E
INAnd E
OUT, live wire in-out end L
INAnd L
OUT
Claims (2)
1, the general electricity-preventing wall device of a kind of instant electric water heater of switch controlled comprises Zero-liue voltage check device and relay executive circuit; It is characterized in that being connected to transformer or resistance-capacitance depressurization circuit between ground wire and zero line, by the break-make of the connected relay of switch controlled, switching tube is controlled by the potential difference signal of Zero-liue, cuts off ground wire and live wire when ground wire electrification in real time.
2, the general electricity-preventing wall device of the instant electric water heater of switch controlled according to claim 1, it is characterized in that the potential difference detecting device of cross-over connection between ground wire and zero line, form by transformer or resistance-capacitance depressurization circuit, switching tube, the switching tube output is connected with the relay executive circuit, and often the opening of relay, normally-closed contact connect live wire and ground wire respectively; Switching tube provides low storage battery signal to the relay of its connection when ground wire electrification, drives relay work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320111855 CN2748832Y (en) | 2003-12-28 | 2003-12-28 | Switching tube controlled universal electricity-proof wall of instant heating electric water heaters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320111855 CN2748832Y (en) | 2003-12-28 | 2003-12-28 | Switching tube controlled universal electricity-proof wall of instant heating electric water heaters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2748832Y true CN2748832Y (en) | 2005-12-28 |
Family
ID=35720324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320111855 Expired - Fee Related CN2748832Y (en) | 2003-12-28 | 2003-12-28 | Switching tube controlled universal electricity-proof wall of instant heating electric water heaters |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2748832Y (en) |
-
2003
- 2003-12-28 CN CN 200320111855 patent/CN2748832Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |