CN201113385Y - Power utilization safety device for electrical heater - Google Patents
Power utilization safety device for electrical heater Download PDFInfo
- Publication number
- CN201113385Y CN201113385Y CNU2007200730993U CN200720073099U CN201113385Y CN 201113385 Y CN201113385 Y CN 201113385Y CN U2007200730993 U CNU2007200730993 U CN U2007200730993U CN 200720073099 U CN200720073099 U CN 200720073099U CN 201113385 Y CN201113385 Y CN 201113385Y
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- CN
- China
- Prior art keywords
- electric heater
- relay
- line end
- safety device
- phase line
- 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 an electric heater electricity utilization safety device, which comprises an electric heater, a power source phase line end connected with one end of the electric heater, a power source zero line end connected with the other end of the electric heater and a relay provided with two pairs of contacts, wherein one pair of contacts of the relay is connected in series between the electric heater and the power source phase line end, while the other pair of contacts is connected in series between the electric heater and the power source zero line end; and the coil of the relay is connected with the power source phase line end and the power source zero line end. The electric heater electricity utilization safety device is provided with the relay contacts inside both a phase line circuit and a zero line circuit which are connected with the electric circuit; therefore, when a power source is cut off, the relay is switched off and the two pairs of contacts of the relay are opened; meanwhile, whether a phase line and a zero line are in positive connection or in reverse connection, the electric heater is not charged, thereby eliminating the occurrence of an electric shock accident.
Description
Technical field
The utility model relates to a kind of Electrical Safety device, relates in particular to a kind of Electrical Safety device of electric heater.
Background technology
At present, electric heater just more and more popularly enters huge numbers of families, and electric heater is quick with it, economy, and the characteristics of saving are admitted by people, but the Electrical Safety of electric heater is the problem that people pay close attention to always.Electric heater uses AC power, and be connected to earth connection, AC power is formed current supply circuit by phase line and zero line, because the characteristics of AC power, when phase line and zero line connect inverse time electric heater operate as normal still under normal circumstances, when the electric heater fault need be keeped in repair, the maintenance personal can cut off the electric heater power supply, in some cases, the electric heater power supply only is provided with switch on phase line, and does not have switch on the zero line, this kind situation is in phase line, no problem under the correct situation of zero line wiring, in case phase line, zero line connects instead, and is no problem when electric heater is working properly, but when maintenance, what the maintenance personal cut off is the zero line switch, and phase line still is connected on the electric heater, has brought potential safety hazard to the maintenance personal thus, and electric shock accidents takes place easily.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of electric heater Electrical Safety device.
For solving the problems of the technologies described above, electric heater Electrical Safety device of the present utility model comprises electric heater, connects the power supply phase line end and the zero-power line end that is connected the described electric heater other end of described electric heater one end, comprise that also one has the relay of two auxiliary contacts, one auxiliary contact of described relay is serially connected with between described electric heater and the described power supply phase line end, another auxiliary contact of described relay is serially connected with between described electric heater and the described zero-power line end, and the coil of described relay is connected in described power supply phase line end and zero-power line end; The current capacity of described relay contact and the currents match of described electric heater.
Because electric heater Electrical Safety device of the present utility model has all added relay contact in phase line that connects electric heater and zero line loop, in case cut off the electricity supply, relay electric-loss, its two auxiliary contact is opened, this moment is no matter phase line and zero line are just connecing or connecing instead, electric heater will be not charged, thereby stop the generation of electric shock accidents.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and embodiments:
Fig. 1 is the circuit diagram of the utility model electric heater Electrical Safety device.
Embodiment
Fig. 1 is the circuit diagram of the utility model electric heater Electrical Safety device, electric heater Electrical Safety device of the present utility model comprises electric heater 1, the power supply phase line end 5 and the zero-power line end 6 that is connected described electric heater 1 other end that connect described electric heater 1 one ends, comprise that also one has the relay 2 of two auxiliary contacts 3 and 4, one auxiliary contact 3 of described relay 2 is serially connected with between described electric heater 1 and the described power supply phase line end 5, another auxiliary contact 4 of described relay 2 is serially connected with between described electric heater 1 and the described zero-power line end 6, and the coil of described relay 2 is connected in described power supply phase line end 5 and zero-power line end 6.The current capacity of described relay contact and the currents match of described electric heater.
Because electric heater Electrical Safety device of the present utility model has all added relay contact in phase line that connects electric heater and zero line loop, when need keep in repair electric heater, the maintenance personal cuts off the electricity supply, be connected in the relay electric-loss between AC power phase line and zero line, its two auxiliary contact is opened, electric heater will be not charged no matter phase line and zero line on the electric heater are just connecing or connecing anti-this moment, thus the generation of when the maintenance electric heater, having stopped electric shock accidents.
According to the principle of above-mentioned Electrical Safety device, this Electrical Safety device can not only be used in electric heater, also can be applicable to other electrical appliance.
Claims (2)
1. electric heater Electrical Safety device, the power supply phase line end and the zero-power line end that is connected the described electric heater other end that comprise electric heater, described electric heater one end of connection, comprise that also one has the relay of two auxiliary contacts, it is characterized in that: an auxiliary contact of described relay is serially connected with between described electric heater and the described power supply phase line end, another auxiliary contact of described relay is serially connected with between described electric heater and the described zero-power line end, and the coil of described relay is connected in described power supply phase line end and zero-power line end.
2. electric heater Electrical Safety device according to claim 1 is characterized in that: the current capacity of described relay contact and the currents match of described electric heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200730993U CN201113385Y (en) | 2007-07-31 | 2007-07-31 | Power utilization safety device for electrical heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200730993U CN201113385Y (en) | 2007-07-31 | 2007-07-31 | Power utilization safety device for electrical heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201113385Y true CN201113385Y (en) | 2008-09-10 |
Family
ID=39965128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200730993U Expired - Fee Related CN201113385Y (en) | 2007-07-31 | 2007-07-31 | Power utilization safety device for electrical heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201113385Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108436334A (en) * | 2018-04-01 | 2018-08-24 | 上海外高桥造船有限公司 | Mobile electric heater |
-
2007
- 2007-07-31 CN CNU2007200730993U patent/CN201113385Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108436334A (en) * | 2018-04-01 | 2018-08-24 | 上海外高桥造船有限公司 | Mobile electric heater |
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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: 20080910 Termination date: 20110731 |