CN202141202U - Electric heater with groundwire live line detecting and alarming as well as protecting - Google Patents
Electric heater with groundwire live line detecting and alarming as well as protecting Download PDFInfo
- Publication number
- CN202141202U CN202141202U CN201120169250U CN201120169250U CN202141202U CN 202141202 U CN202141202 U CN 202141202U CN 201120169250 U CN201120169250 U CN 201120169250U CN 201120169250 U CN201120169250 U CN 201120169250U CN 202141202 U CN202141202 U CN 202141202U
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- control circuit
- ground wire
- electric heater
- groundwire
- live line
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Abstract
The utility model discloses an electric heater with groundwire live line detecting and alarming as well as protecting, which comprises a shell, a liner mounted in the shell, an electrical heated tube mounted in the liner, and a control circuit mounted in the shell. The electric heater with the groundwire live line detecting and alarming as well as protecting is characterized in that the control circuit comprises a groundwire live line detecting unit and a main control circuit. The signal input side of the groundwire live line detecting unit is provided with two terminals; one terminal is connected with the liner; the other terminal is connected with an analog ground; the signal output end of the groundwire live line detecting unit is connected with the main control circuit; the groundwire live line detecting unit comprises a current-limiting resistor and an opto-coupler; one terminal at the signal input side of the opto-coupler is connected onto the liner of the heater through the current-limiting resistor; another terminal of the opto-coupler is connected onto the analog ground; the signal output end of the opto-coupler is connected with the main control circuit in a conductive way; and the output end of the opto-coupler is connected with a weak power. The electric heater with the groundwire live line detecting and alarming as well as protecting has the advantages of simple structure and convenience for control.
Description
Technical field
The utility model relates to electric heater and makes the field, relates in particular to the electric heater that has ground wire electrified detection, reports to the police and protect.
Background technology
Electric heater is owing to be through electric power heating, and the inner bag of water and metal is a conducting medium, therefore in the water heater working process; Might cause poor sealing to cause the electric leakage casualty accident because of part is aging, so the electric leakage prevention and control of electric heater are the important component parts of water heater product, existing technology be divided into initiatively prevention and control and passive prevention and control; Wherein initiatively prevention and control mainly are the quality that will improve parts, improve sealing effectiveness, but surpass the regular hour when the service time of water heater; Along with parts are aging, therefore the situation that can occur leaking electricity is necessary to add passive prevention and control; Existing passive anti-control techniques is generally an earth detector is set, and, promptly can cut off the electricity supply in case discovery has the situation of electric leakage through checkout gear; Send acousto-optic hint,, be: the earth leakage protective device of the electric heater that the Chinese patent of ZN200920241579.5 proposes like the patent No. with the warning user; This patent has been used a plurality of coils and control ground road, makes electric heater in case timely disconnecting circuit when electric leakage takes place, the security that has improved electric heater; These protection belongs to machine electric leakage itself, and under the situation that ground wire is good simultaneously, this type of earth leakage protective can play effect.If machine is good, and the ground wire of users home is bad, simultaneously other household electrical appliances electric leakages; At this moment charged because of the bad machine that causes on the contrary of ground wire; Such machine is charged, and the protection of electric leakage coil is can not be effective, has has therefore researched and developed the water heater that this place tape electro-detection is reported to the police and protected.
Summary of the invention
The purpose of the utility model is in order to solve the problems of the technologies described above, provides a kind of and has ground wire electrified detection and report to the police, and the electric heater of protecting simultaneously, it has simple for structure, and is cheap for manufacturing cost, controls advantage easily.
For solving the problems of the technologies described above, the utility model adopts following technical proposal:
The electric heater that has ground wire electrified detection, reports to the police and protect; Comprise shell; Be installed on the inner bag in the shell, be installed on the electrothermal tube in the inner bag and be installed on the shell inner control circuit, it is characterized in that: described control circuit includes ground wire electrified detection unit, main control circuit; Ground wire electrified detection cell signal input side has two terminals; A terminal is connected with said inner bag, and another terminal connects simulation ground, and ground wire electrified detection cell signal output is connected with main control circuit; Said ground wire electrified detection unit includes current-limiting resistance, light lotus root, and signal input side one terminal of light lotus root is connected to through said current-limiting resistance on the inner bag of water heater, and another terminal is connected to simulation ground, and signal output part and the main control circuit of light lotus root connect; The output of light lotus root is connected with weak mains.
Further design also is provided with diode between described current-limiting resistance and the light lotus root input.
Further design is provided with current-limiting resistance between described smooth lotus root and the power supply.
Further design, described optocoupler connects insulating materials with the terminal that simulation ground is connected.
The beneficial effect of the utility model is: whether have charged and warning, circuit structure is succinct if detecting water heater liner (ground wire) through a light lotus root circuit, the output end voltage of light lotus root can be provided with on demand, and control is convenient.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is done further explain.
Fig. 1 is the structural representation of the utility model.
The specific embodiment
As shown in Figure 1; A kind of electric heater that has ground wire electrified detection, reports to the police and protect comprises shell 1, is installed on the inner bag 2 in the shell 1; Be installed on the electrothermal tube in the inner bag and be installed on shell 1 inner control circuit; Control circuit includes ground wire electrified detection unit I, main control circuit II, and ground wire electrified detection unit I signal input side has two terminals, and a terminal is connected with said inner bag 2; Another terminal connects simulation ground, and ground wire electrified detection unit I signal output part is connected with the main control circuit II; Ground wire electrified detection unit I includes current-limiting resistance 4, light lotus root 3; Signal input side one terminal 301 of light lotus root 3 is connected on the inner bag 2 of water heater through current-limiting resistance 4; Another terminal 302 is connected to simulation ground, and signal output part 5 and the main control circuit II of light lotus root 3 connect; The output of light lotus root 3 is connected with weak mains 8.
In the utility model, also be provided with diode 6 between current-limiting resistance 4 and light lotus root 3 inputs.
In the utility model, be provided with current-limiting resistance 7 between light lotus root 3 and the power supply 8.
In the utility model, the terminal 302 that optocoupler is connected with simulation ground connects insulating materials.
Be connected in the input terminal voltage on the inner bag through detection; In case the charged voltage of water heater liner surpasses safe voltage; The light lotus root promptly can conducting, and the high level of the output of light lotus root when not having conducting becomes low level, utilizes the variation of high-low level just can obtain a data signal; Thereby drive main control circuit work, warning user's water heater liner (ground wire) is charged.
The utility model utilizes isolation and the sensitivity of light lotus root, makes ground wire electrified detection and warning circuit structure more succinct, effectively reduces cost, and improves sensitivity, and control is convenient.
Claims (4)
1. the electric heater that has ground wire electrified detection, reports to the police and protect; Comprise shell (1); Be installed on the inner bag (2) in the shell (1), be installed on the electrothermal tube in the inner bag and be installed on shell (1) inner control circuit, it is characterized in that: described control circuit includes ground wire electrified detection unit (I), main control circuit (II); Ground wire electrified detection unit (I) signal input side has two terminals; A terminal is connected with said inner bag (2), and another terminal connects simulation ground, and ground wire electrified detection unit (I) signal output part is connected with main control circuit (II); Said ground wire electrified detection unit (I) includes current-limiting resistance (4), light lotus root (3); Signal input side one terminal (301) of light lotus root (3) is connected on the inner bag (2) of water heater through said current-limiting resistance (4); Another terminal (302) is connected to simulation ground, and the signal output part (5) of light lotus root (3) connects with main control circuit (II); The output of light lotus root (3) is connected with weak mains (8).
2. a kind of electric heater that has ground wire electrified detection, reports to the police and protect according to claim 1 is characterized in that also being provided with diode (6) between described current-limiting resistance (4) and light lotus root (3) input.
3. a kind of electric heater that has ground wire electrified detection, reports to the police and protect according to claim 1 is characterized in that being provided with current-limiting resistance (7) between described smooth lotus root (3) and the power supply (8).
4. a kind of electric heater that has ground wire electrified detection, reports to the police and protect according to claim 1 is characterized in that described optocoupler connects insulating materials with the terminal (302) that simulation ground is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120169250U CN202141202U (en) | 2011-05-25 | 2011-05-25 | Electric heater with groundwire live line detecting and alarming as well as protecting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120169250U CN202141202U (en) | 2011-05-25 | 2011-05-25 | Electric heater with groundwire live line detecting and alarming as well as protecting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202141202U true CN202141202U (en) | 2012-02-08 |
Family
ID=45552258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120169250U Expired - Lifetime CN202141202U (en) | 2011-05-25 | 2011-05-25 | Electric heater with groundwire live line detecting and alarming as well as protecting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202141202U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108870728A (en) * | 2018-03-02 | 2018-11-23 | 青岛经济技术开发区海尔热水器有限公司 | A kind of electric heater |
| CN111486599A (en) * | 2020-03-20 | 2020-08-04 | 广东万家乐燃气具有限公司 | Electric water heater electric leakage detection system and electric water heater |
| CN112098892A (en) * | 2020-09-18 | 2020-12-18 | 新兴铸管股份有限公司 | Electricity leakage alarm circuit for electricity utilization equipment |
-
2011
- 2011-05-25 CN CN201120169250U patent/CN202141202U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108870728A (en) * | 2018-03-02 | 2018-11-23 | 青岛经济技术开发区海尔热水器有限公司 | A kind of electric heater |
| CN111486599A (en) * | 2020-03-20 | 2020-08-04 | 广东万家乐燃气具有限公司 | Electric water heater electric leakage detection system and electric water heater |
| CN111486599B (en) * | 2020-03-20 | 2021-05-14 | 广东万家乐燃气具有限公司 | Electric water heater electric leakage detection system and electric water heater |
| CN112098892A (en) * | 2020-09-18 | 2020-12-18 | 新兴铸管股份有限公司 | Electricity leakage alarm circuit for electricity utilization equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120208 |