CN201106934Y - Anti-electricity device for electric water heater with time-sharing detection function - Google Patents
Anti-electricity device for electric water heater with time-sharing detection function Download PDFInfo
- Publication number
- CN201106934Y CN201106934Y CNU2007201136517U CN200720113651U CN201106934Y CN 201106934 Y CN201106934 Y CN 201106934Y CN U2007201136517 U CNU2007201136517 U CN U2007201136517U CN 200720113651 U CN200720113651 U CN 200720113651U CN 201106934 Y CN201106934 Y CN 201106934Y
- Authority
- CN
- China
- Prior art keywords
- relay
- circuit
- potential difference
- ground
- water heater
- 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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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 238000001514 detection method Methods 0.000 title claims abstract 13
- 230000007935 neutral effect Effects 0.000 claims abstract 3
- 230000000087 stabilizing effect Effects 0.000 claims abstract 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 230000000703 anti-shock Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
一种具有分时检测功能的电热水器防电装置，涉及一种电热水器防电装置；其特征是零地线电位差检测装置和火地线电位差检测装置，分别跨接在零地线和火地线之间，其输出端分别与单片机输入端相连接。零地线电位差检测装置和火地线电位差检测装置的稳压电路包括限流电路和整流电路，开关电路包括开关管和继电器，开关管和继电器相连接，继电器的常开触点一端与电源正极相连接，另一端分别与单片机输入端相连接。单片机输出端与开关管和继电器相连接，继电器的常开触点分别与火线、零线和地线的进出端相连接。其有益效果是确保在电热水器地线带电和不可靠接地情况下，切断火线、零线和地线，在输入电源极性相反时进行极性转换，起到安全保护作用。
An anti-electricity device for an electric water heater with a time-sharing detection function relates to an anti-electricity device for an electric water heater; it is characterized in that a zero-to-ground potential difference detection device and a fire-to-ground potential difference detection device are connected across the zero-to-ground wire and the fire-to-ground wire respectively Between the fire and ground wires, the output terminals are respectively connected with the input terminals of the single-chip microcomputer. The voltage stabilizing circuit of the zero-ground wire potential difference detection device and the fire-ground wire potential difference detection device includes a current limiting circuit and a rectifier circuit, and the switch circuit includes a switch tube and a relay, the switch tube and the relay are connected, and one end of the normally open contact of the relay is connected to The positive pole of the power supply is connected, and the other end is respectively connected with the input end of the single-chip microcomputer. The output end of the single-chip microcomputer is connected with the switch tube and the relay, and the normally open contacts of the relay are respectively connected with the input and output ends of the live wire, the neutral wire and the ground wire. Its beneficial effect is to ensure that the live wire, neutral wire and ground wire are cut off when the ground wire of the electric water heater is charged and unreliably grounded, and the polarity conversion is performed when the polarity of the input power is reversed, so as to play a role of safety protection.
Description
Technical field
The utility model relates to a kind of anti-shock device for electric water heater, and particularly a kind of anti-shock device for electric water heater with time sharing detecting function belongs to the single-chip microcomputer control technology field.
Background technology
The prior art of accumulating type electric water heater do not have the polarity translation function and under ground wire electrification and unreliable ground connection situation to the personal safety protection function.
Summary of the invention
The purpose of this utility model provides a kind of anti-shock device for electric water heater with time sharing detecting function.
The technical scheme that its technical problem that solves the utility model adopts is: this device comprises the single-chip microcomputer imput output circuit; Zero grounding potential difference detector set and fiery ground wire potential difference detecting device are connected across respectively between Zero-liue and the fiery ground wire, and its output is connected with the single-chip microcomputer input respectively.Zero grounding potential difference detector set and fiery ground wire potential difference detecting device are made up of mu balanced circuit and on-off circuit, mu balanced circuit comprises current-limiting circuit and diode bridge rectifier circuit, on-off circuit comprises switching tube and relay, switching tube is connected with relay, normally opened contact one end of relay is connected with positive source, and the other end is connected with the single-chip microcomputer input respectively.The single-chip microcomputer output is connected with the switch executive circuit, and the switch executive circuit is made up of switching tube and relay, and the normally opened contact of relay is connected with the in-out end of live wire, zero line and ground wire respectively.
The beneficial effects of the utility model are that the single-chip microcomputer input has time sharing detecting function and the single-chip microcomputer output has the polarity translation function; guarantee under electric heater ground wire electrification and unreliable ground connection situation; cut off live wire L, zero line N and ground wire E; guarantee that input polarity at electric heater live wire L, zero line N carries out the polarity conversion when opposite, play the safeguard protection effect.
Description of drawings
The utility model is described in further detail below by accompanying drawing.
Accompanying drawing 1 is an electrical schematic diagram of the present utility model.
The specific embodiment
Consult Fig. 1.Single-chip microcomputer is the PIC12C508 8-bit microcontroller of U.S. Microchip company among the figure.Zero grounding potential difference detector set and fiery ground wire potential difference detecting device are connected across respectively between Zero-liue NE and the fiery ground wire LE, and its output is connected with single-chip microcomputer PIC12C508 input I/O (1), I/O (2) respectively.Zero grounding potential difference detector set and fiery ground wire potential difference detecting device are made up of mu balanced circuit and on-off circuit, mu balanced circuit comprises current-limiting circuit R1C1, R2C2 and diode bridge rectifier circuit D1-D4 and D5-D8, on-off circuit comprises switching tube VT1, VT2 and relay J 1, J2, switching tube VT1, VT2 are connected with relay J 1, J2, normally opened contact one end of relay J 1, J2 is connected with positive source (+), and the other end is connected with single-chip microcomputer PIC12C508 input I/O (1), I/O (2) respectively.Single-chip microcomputer PIC12C508I/O output I/O (3), I/O (4), I/O (5) are connected with the switch executive circuit, the switch executive circuit is made up of switching tube G1, G2, G3 and relay J 1, J2, J3, and the contact of relay is connected with the in-out end of ground wire E with live wire L, zero line N respectively.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201136517U CN201106934Y (en) | 2007-08-23 | 2007-08-23 | Anti-electricity device for electric water heater with time-sharing detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201136517U CN201106934Y (en) | 2007-08-23 | 2007-08-23 | Anti-electricity device for electric water heater with time-sharing detection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201106934Y true CN201106934Y (en) | 2008-08-27 |
Family
ID=39958741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201136517U Expired - Fee Related CN201106934Y (en) | 2007-08-23 | 2007-08-23 | Anti-electricity device for electric water heater with time-sharing detection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201106934Y (en) |
-
2007
- 2007-08-23 CN CNU2007201136517U patent/CN201106934Y/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080827 |