CN200997521Y - Electric controller against earth wire for regenerative electric water heater - Google Patents
Electric controller against earth wire for regenerative electric water heater Download PDFInfo
- Publication number
- CN200997521Y CN200997521Y CN 200620107726 CN200620107726U CN200997521Y CN 200997521 Y CN200997521 Y CN 200997521Y CN 200620107726 CN200620107726 CN 200620107726 CN 200620107726 U CN200620107726 U CN 200620107726U CN 200997521 Y CN200997521 Y CN 200997521Y
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- Prior art keywords
- water heater
- circuit
- potential difference
- electric water
- zero
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Abstract
A heat storage type electric water heater ground-proof live control device, which comprises a zero ground line potential difference detection device and a flow switch signal input circuit, is characterized in that a zero ground line potential difference detection device, which is connected between the power source zero ground lines, is connected with the input terminal of the monolithic processor.
Description
Technical field
The utility model relates to a kind of accumulating type electric water heater defense sector tape electric control technology.
Background technology
The accumulating type electric water heater that the utility model relates to is a kind of of electric heater.Electric heater is divided into accumulating type electric water heater and instant electric water heater by its water storage mode, and accumulating type electric water heater is meant with electric heating tube water is heated to fixedly storage-type electric water heater below the boiling point.
As everyone knows, the ground connection in the electric heater product electricity consumption 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 much regional in the China and the world, power utilization environment is poor, and the ground connection of many buildings is insecure, or even lack.In this case, qualified electric heater can not guarantee user's safety.
At the utility model before the applying date, the electric heater product that comprises accumulating type electric water heater does not have when accumulating type electric water heater uses or used method protection personal safety of the present utility model when ground wire and electrical equipment basic insulation lost efficacy simultaneously.
Summary of the invention
The purpose of this utility model provides a kind of accumulating type electric water heater defense sector tape controller for electric consumption.
The technical scheme that its technical problem that solves the utility model adopts is: accumulating type electric water heater defense sector tape controller for electric consumption comprises ground wire potential difference detecting device and flow switch signal input circuit; It is characterized in that being connected to zero grounding potential difference detector set between the power supply Zero-liue, the zero grounding potential difference detector set that is connected across between the power supply Zero-liue is connected with the single-chip microcomputer input.Zero grounding potential difference detector set is made up of capacitance-resistance device reduction voltage circuit, rectification circuit and discharge circuit, is aided with voltage stabilizing circuit and bleeder circuit.Zero grounding potential difference detector set is connected across between the power supply Zero-liue, and its output signal is connected with input of single chip.Described flow switch signal input circuit is connected with input of single chip.Single machine output end is connected with relay coil by switching tube, and the normally-closed contact of relay is connected with the live wire in-out end with ground wire respectively, the break-make of control ground wire and live wire.
The beneficial effects of the utility model are: automatic fast shut-off power supply when accumulating type electric water heater uses or when ground wire and electrical equipment basic insulation lost efficacy ground wire electrification simultaneously, realize personal safety protection.
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.
Accompanying drawing 2 is the connection layout of the normally-closed contact of the utility model relay.
Embodiment
Consult Fig. 1.Accumulating type electric water heater defense sector tape controller for electric consumption comprises zero grounding potential difference detector set and flow switch signal input circuit.Be connected to zero grounding potential difference detector set between the power supply Zero-liue, zero grounding potential difference detector set is connected with the single-chip microcomputer input.Among the embodiment, flow switch signal K input circuit is connected with input of single chip I/O (2).Potential difference detecting device is made up of capacitance-resistance device reduction voltage circuit, rectification circuit and discharge circuit, is aided with voltage stabilizing circuit and bleeder circuit.RC is the capacitance-resistance device, and rectification circuit and voltage stabilizing circuit are made up of D1-D4 and DW, C0 respectively.Bleeder circuit is made up of R1 and R2 respectively, and other embodiment can also adopt other forms of half-wave and full-wave rectification or exempt to connect voltage stabilizing circuit and bleeder circuit.The output signal of present embodiment bleeder circuit is connected with the input of discharge circuit AJ, and another input of discharge circuit AJ is connected with reference voltage, and the output of discharge circuit AJ is connected with input of single chip I/O (1).Single machine output end I/O (3), I/O (4) are by switching tube and and relay J
1And J
2Control coil be connected.Among the figure, N is a zero line, and E is a ground wire.
Consult Fig. 2 .E
INAnd E
OUTEnd of incoming cables and the leading-out terminal of representing ground wire respectively, L
INAnd L
OUTEnd of incoming cables and the leading-out terminal of representing live wire respectively, J
1And J
2The normally-closed contact of representing relay respectively, J
1And J
2Respectively with ground wire E
INAnd E
OUTWith live wire L
INAnd L
OUTIn-out end is connected, the break-make of control ground wire and live wire.
Potential difference reaches 36V safety electricity when above between flow switch K closure or ground wire E and zero line N when accumulating type electric water heater uses, and the signal quick control that single-chip microcomputer receives flow switch signal or zero grounding potential difference detector set is serially connected in the normally-closed contact J of relay
1And J
2The ground wire at two ends and the disconnection of live wire.
The present embodiment single-chip microcomputer is the 8-bit microcontroller PIC16C54 of U.S. MICROCHIP company.
Claims (4)
1, a kind of accumulating type electric water heater defense sector tape controller for electric consumption comprises zero grounding potential difference detector set and flow switch signal input circuit; It is characterized in that being connected to zero grounding potential difference detector set between the power supply Zero-liue, the zero grounding potential difference detector set that is connected across between the power supply Zero-liue is connected with the single-chip microcomputer input.
2, accumulating type electric water heater according to claim 1 defense sector tape controller for electric consumption is characterized in that described zero grounding potential difference detector set is made up of capacitance-resistance device reduction voltage circuit, rectification circuit and discharge circuit, is aided with voltage stabilizing circuit and bleeder circuit.
3, accumulating type electric water heater according to claim 1 defense sector tape controller for electric consumption is characterized in that described flow switch signal input circuit is connected with input of single chip.
4, accumulating type electric water heater according to claim 1 defense sector tape controller for electric consumption is characterized in that single machine output end is connected with relay coil by switching tube, and the normally-closed contact of relay is connected with the live wire in-out end with ground wire respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620107726 CN200997521Y (en) | 2006-09-15 | 2006-09-15 | Electric controller against earth wire for regenerative electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620107726 CN200997521Y (en) | 2006-09-15 | 2006-09-15 | Electric controller against earth wire for regenerative electric water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200997521Y true CN200997521Y (en) | 2007-12-26 |
Family
ID=38995956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620107726 Expired - Fee Related CN200997521Y (en) | 2006-09-15 | 2006-09-15 | Electric controller against earth wire for regenerative electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200997521Y (en) |
-
2006
- 2006-09-15 CN CN 200620107726 patent/CN200997521Y/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 |