CN205717957U - Water storage type electric heater electrocution-proof protection device - Google Patents
Water storage type electric heater electrocution-proof protection device Download PDFInfo
- Publication number
- CN205717957U CN205717957U CN201620451674.8U CN201620451674U CN205717957U CN 205717957 U CN205717957 U CN 205717957U CN 201620451674 U CN201620451674 U CN 201620451674U CN 205717957 U CN205717957 U CN 205717957U
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- CN
- China
- Prior art keywords
- switch
- electric heater
- voltage conversion
- conversion circuit
- relay
- 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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- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
- Control Of Resistance Heating (AREA)
Abstract
This utility model provides a kind of water storage type electric heater electrocution-proof protection device, including the first switch, voltage conversion circuit, second switch, relay and display lamp；First switch electrically connects with the input of voltage conversion circuit, and the coil pin of the outfan of voltage conversion circuit, second switch and relay is sequentially connected electrically；Civil power enters voltage conversion circuit through the first switch, and voltage conversion circuit exports after civil power is converted to safe voltage, and the output electric current of voltage conversion circuit enters relay by second switch；Described second switch is arranged in the outlet pipe of electric heater, described second switch Guan Bi when outlet pipe discharges water；First switch, the normally-closed contact of relay and display lamp are sequentially connected electrically, and form loop；Electric heater, as load, is connected in parallel on the two ends of described display lamp.This utility model cuts off the power supply of electric heater immediately when electric heater discharges water, it is possible to stop the generation of electric shock accidents completely；And simple in construction, low cost.
Description
Technical field
This utility model belongs to electric appliance for bathroom and controls technical field, is specifically related to a kind of water storage type electric heater protection against electric shock and protects
Protect device.
Background technology
The protection device of the box electric heater of existing water-retention is all to use anticreep to be main passive protection mode, i.e. exist
After leaking electricity during having a bath, the power supply of water storage type electric heater is cut off in protection device meeting automatic trip.This mode needs
Occur electric leakage just can cut off the electricity supply to protect, it is impossible to stop the generation of the electric shock accidents of the box electric heater of water-retention completely.Also
There are some anti-creeping protection device structures complexity, cost high, it is difficult to realize batch production；And the circuit in protection device does not has
There is the safe voltage using below 36V, do not reach and be perfectly safe.
Utility model content
In view of this, the purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that a kind of simple in construction, cost
Low water storage type electric heater electrocution-proof protection device.
For realizing object above, this utility model adopts the following technical scheme that
A kind of water storage type electric heater electrocution-proof protection device, including the first switch, voltage conversion circuit, second switch, continues
Electrical equipment and display lamp；Described first switch electrically connects with the input of described voltage conversion circuit, described voltage conversion circuit
The coil pin of outfan, described second switch and described relay is sequentially connected electrically；Civil power enters through described first switch
Described voltage conversion circuit, described voltage conversion circuit exports after civil power is converted to safe voltage, described voltage conversion circuit
Output electric current by described second switch enter described relay；Described second switch is arranged on the outlet pipe of electric heater
In, described second switch Guan Bi when outlet pipe discharges water, the normally-closed contact of described relay disconnects；
Described first switch, the normally-closed contact of described relay and described display lamp are sequentially connected electrically, and form loop；Electric heating
Hydrophone, as load, is connected in parallel on the two ends of described display lamp；Civil power enters from described first switch, normal through described relay
Closed contact, powers to described display lamp and electric heater.
The output end voltage of described voltage conversion circuit is direct current 12V.
Described first switch is rocker switch or press button.
Described second switch is water flow switch, is arranged in outlet pipe the water outlet near water mixing valve.
Described display lamp is in series by a light emitting diode and a protective resistance.
This utility model uses above technical scheme, utilizes water flow switch and the work of Control electric heater, electricity
Cut off the power supply of electric heater when water heater discharges water immediately, and control circuit uses 12V safe voltage, it is possible to stop to store completely
The electric shock accidents of water tank type electric heater.This utility model low cost；And simple in construction, easily on existing electric heater
Install.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of this utility model water storage type electric heater electrocution-proof protection device.
In figure: 1, input lead；2, voltage conversion circuit；21, input；22, outfan；3, relay；31, coil draws
Foot；32, normally-closed contact；4, display lamp.
Detailed description of the invention
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
As it is shown in figure 1, this utility model provides a kind of water storage type electric heater electrocution-proof protection device, including the first switch
K1, voltage conversion circuit 2, second switch K2, relay 3 and display lamp 4.First switch K1 is rocker switch or button leaves
Close.One end of first switch K1 electrically connects with input lead 1, and the other end electrically connects with the input 21 of voltage conversion circuit 2；
The coil pin 31 of the outfan 22 of voltage conversion circuit 2, second switch K2 and relay 3 is sequentially connected electrically.Civil power is by inputting
Lead-in wire 1 access, enters voltage conversion circuit 2 through the first switch K1；220V alternating current is converted to directly by voltage conversion circuit 2
Stream, and reduce to output after safe voltage；The output electric current of voltage conversion circuit 2 enters relay 3 by second switch K2.Electricity
Outfan 22 voltage of voltage conversion circuit 2 is direct current 12V.Second switch K2 is water flow switch, is arranged on the water outlet of electric heater
Near the water outlet of water mixing valve in pipe, second switch K2 Guan Bi when outlet pipe discharges water；Water flow switch is arranged on water mixing valve water outlet
Mouth is preferred embodiment, it is not necessary to transforming electric heater, being arranged on other place will increase material and man-hour.
First switch K1, the normally-closed contact 32 of relay 3 and display lamp 4 are sequentially connected electrically, and form loop；Electric heater is made
The two ends of display lamp 4 it are connected in parallel on for load；Civil power enters from the first switch K1, through the normally-closed contact 32 of relay 3, gives instruction
Lamp 4 and electric heater are powered.Display lamp 4 is in series by a light emitting diode and a protective resistance.First switch K1 is
Main switch, it is possible to cut off water storage type electric heater electrocution-proof protection device and the power supply of electric heater simultaneously, can control easily
Electric heater, beneficially using electricity wisely.The closed type relay that employing model is SLA-12VDC-SL-B of relay 3.Electric heating
Hydrophone is in parallel with display lamp 4, and therefore during electric heater work, display lamp 4 is the most luminous.
After user opens the shower nozzle of electric heater, the water in outlet pipe starts flowing, and current kinetic potential pushes directly on current
Switch, makes second switch K2 connect；The 12V unidirectional current of voltage conversion circuit 2 output enters the coil pin 31 of relay 3, continues
Coil electricity adhesive in electrical equipment 3, the normally-closed contact 32 of relay 3 disconnects, thus the power supply of electric heater is cut off.Electric hot water
After the shower nozzle of device is closed, second switch K2 connects and makes relay 3 power-off, and normally-closed contact 32 returns to closure state, electric heater
Energising work.
This utility model is not limited to above-mentioned preferred forms, and those skilled in the art is in enlightenment of the present utility model
Under other various forms of products of drawing, no matter making any change in shape or structure, every same as the present application or phase
The technical scheme of approximation, within all falling within protection domain of the present utility model.
Claims (5)
1. a water storage type electric heater electrocution-proof protection device, it is characterised in that: include the first switch, voltage conversion circuit,
Two switches, relay and display lamp；Described first switch electrically connects with the input of described voltage conversion circuit, and described voltage turns
The coil pin changing the outfan of circuit, described second switch and described relay is sequentially connected electrically；Civil power is through described first
Switch enters described voltage conversion circuit, and described voltage conversion circuit exports after civil power is converted to safe voltage, described voltage
The output electric current of change-over circuit enters described relay by described second switch；Described second switch is arranged on electric heater
In outlet pipe, described second switch Guan Bi when outlet pipe discharges water, the normally-closed contact of described relay disconnects；
Described first switch, the normally-closed contact of described relay and described display lamp are sequentially connected electrically, and form loop；Electric heater
As load, it is connected in parallel on the two ends of described display lamp；Civil power enters from described first switch, and normally closed through described relay is touched
Point, powers to described display lamp and electric heater.
Water storage type electric heater electrocution-proof protection device the most according to claim 1, it is characterised in that: described voltage conversion electricity
The output end voltage on road is direct current 12V.
Water storage type electric heater electrocution-proof protection device the most according to claim 1, it is characterised in that: described first switch is
Rocker switch or press button.
4. according to the water storage type electric heater electrocution-proof protection device described in any one of claims 1 to 3, it is characterised in that: described
Second switch is water flow switch, is arranged in outlet pipe the water outlet near water mixing valve.
Water storage type electric heater electrocution-proof protection device the most according to claim 4, it is characterised in that: described display lamp is by one
Individual light emitting diode and a protective resistance are in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620451674.8U CN205717957U (en) | 2016-05-17 | 2016-05-17 | Water storage type electric heater electrocution-proof protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620451674.8U CN205717957U (en) | 2016-05-17 | 2016-05-17 | Water storage type electric heater electrocution-proof protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205717957U true CN205717957U (en) | 2016-11-23 |
Family
ID=57299614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620451674.8U Expired - Fee Related CN205717957U (en) | 2016-05-17 | 2016-05-17 | Water storage type electric heater electrocution-proof protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205717957U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110600330A (en) * | 2019-10-07 | 2019-12-20 | 佛山市中协电器有限公司 | Relay and relay module |
-
2016
- 2016-05-17 CN CN201620451674.8U patent/CN205717957U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110600330A (en) * | 2019-10-07 | 2019-12-20 | 佛山市中协电器有限公司 | Relay and relay module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 Termination date: 20210517 |