CN212362453U - Water heater leakage protection system - Google Patents
Water heater leakage protection system Download PDFInfo
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- CN212362453U CN212362453U CN201921953618.4U CN201921953618U CN212362453U CN 212362453 U CN212362453 U CN 212362453U CN 201921953618 U CN201921953618 U CN 201921953618U CN 212362453 U CN212362453 U CN 212362453U
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- water heater
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- temperature
- protection system
- leakage protection
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Abstract
The utility model discloses a water heater earth leakage protection system, include: the temperature display device comprises a leakage protector, a temperature display module and a temperature sensor; the temperature sensor is arranged in the water heater; a switching power supply module is arranged in the leakage protector and supplies power to the temperature display module; the temperature sensor is used for detecting the water temperature in the inner container of the water heater, converting the detected water temperature value into a water temperature signal and sending the water temperature signal to the temperature display module, and after the temperature display module receives the water temperature signal, the temperature display module displays the water temperature value detected by the temperature sensor; compared with the prior art, the switching power supply module is arranged on the leakage protector, a relatively stable working environment is provided for the leakage protector, the leakage protector is far away from a high-temperature and high-humidity water heater, the fault probability of the switching power supply module is reduced, potential safety hazards are eliminated, and the use safety is further improved.
Description
Technical Field
The utility model relates to an earth leakage protector technical field especially relates to a water heater earth leakage protection system.
Background
Along with the improvement of living standard, the popularization rate of household water heaters is higher and higher, and the electric shock event of using the water heaters is also rare, so that the water heaters need a leakage protector to protect the safety of users, and the existing leakage protector has defects.
A bidirectional control water heater leakage protection system as disclosed in Chinese utility model CN208349589U relates to the electrical safety field, include: the low-voltage power supply module is connected with the water heater controller; the leakage protector is used for switching off or switching on a power supply; the low-voltage power supply module is used for supplying power to the water heater controller; the water heater controller can send out a power-off signal, and the leakage protector cuts off the power supply after receiving the power-off signal; the utility model discloses an use low voltage power module to supply power for the water heater controller, but low voltage power module is placed at the water heater, and power module is than higher to the requirement of environment, and this utility model's power module is placed in the water heater of high temperature high humidity, has the potential safety hazard.
SUMMERY OF THE UTILITY MODEL
First, technical problem to be solved
Aiming at the defects in the prior art, how to solve the problem that the existing leakage protection system has potential safety hazards.
Second, technical scheme
In order to solve the above problems, there is provided a leakage protection system for a water heater, comprising: the temperature display device comprises a leakage protector, a temperature display module and a temperature sensor;
the temperature sensor is arranged in the water heater;
a switching power supply module is arranged in the leakage protector and supplies power to the temperature display module;
the temperature sensor is used for detecting the water temperature in the inner container of the water heater, converting the detected water temperature value into a water temperature signal and sending the water temperature signal to the temperature display module, and after the temperature display module receives the water temperature signal, the temperature display module displays the water temperature value detected by the temperature sensor.
Wherein, water heater earth leakage protection system still includes heat preservation detection module, and heat preservation detection module is used for detecting the operating condition of water heater:
when the water heater is in a heat preservation state, the detection module outputs a heat preservation signal, and after the temperature display module receives the heat preservation signal, the temperature display module displays that the water heater is in the heat preservation state;
when the water heater is in a heating state, the heat preservation detection module outputs a heating signal, and after the temperature display module receives the heating signal, the temperature display module displays that the water heater is in the heating state.
Wherein, the heat preservation detection module includes the isolation module, and the isolation module is used for electrical isolation.
Wherein, earth-leakage protector includes:
the action module is used for switching off or switching on the power supply;
the leakage protection control module is used for controlling the action module to switch off or switch on the power supply;
the leakage detection module is used for detecting whether the live wire and the zero line leak electricity or not, when the leakage is detected, the leakage detection module sends out a leakage signal, and after the leakage protection control module receives the leakage signal, the leakage protection control module controls the action module to disconnect the power supply.
The temperature display module also comprises two status indicator lamps;
when the water heater is in a heat preservation state, the first state indicator lamp is lightened;
when the water heater is in the heating state, the second state indicating lamp is lightened.
The first end of the heat preservation detection module is electrically connected with the zero line, and the second end of the heat preservation detection module is electrically connected with the fire line end of the electric heating tube.
When the electric heating pipe works, the heat preservation detection module outputs a heating signal; when the electric heating pipe does not work, the heat preservation detection module outputs a heat preservation signal.
Wherein, the isolation module is an optical coupler.
Thirdly, the beneficial effects of the utility model
Compared with the prior art, the switching power supply module is arranged on the leakage protector, a relatively stable working environment is provided for the leakage protector, the leakage protector is far away from a high-temperature and high-humidity water heater, the fault probability of the switching power supply module is reduced, potential safety hazards are eliminated, and the use safety is further improved.
Drawings
Fig. 1 is a block diagram of an embodiment of the present invention;
FIG. 2 is a circuit diagram of the leakage protector of the present invention;
fig. 3 is a circuit diagram of a switching power supply module of the present invention;
FIG. 4 is a circuit diagram of the heat preservation detection circuit of the present invention;
fig. 5 is a first circuit diagram of the temperature display module of the present invention;
fig. 6 is a circuit diagram of a temperature display module of the present invention;
fig. 7 is a third circuit diagram of the temperature display module of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in fig. 1 to 7, after power is turned on, the switching power supply module disposed in the leakage protector provides a 5V dc operating voltage for the temperature display module.
When the mutual inductor ZCT1 detects leakage current, the singlechip U1 disconnects the switch S1 through the silicon controlled rectifier SCR;
the heat preservation detection module is arranged in the water heater, and the heat preservation detection module is respectively electrically connected with the zero line and the electric heating pipe live wire end for detecting whether the electric heating pipe works:
when the electric heating pipe works, namely the water heater is in a heating state, the heat preservation detection module sends a heating signal to the single chip microcomputer U5 through the func port, and the single chip microcomputer U5 controls the heating indicator lamp LED1 to light up after receiving the signal, wherein in the embodiment, the heating signal is a continuous 50hz pulse signal;
when the electric heating pipe is not in operation, namely the water heater is in a heat preservation state, the heat preservation detection module sends a heat preservation signal to the single chip microcomputer U5 through the func port, and the single chip microcomputer U5 controls the heat preservation indicator lamp LED2 to light after receiving the signal, wherein in the embodiment, the heating signal is a continuous high level signal;
the heat preservation detection module is provided with opto-coupler U4 for electrical isolation, improves the security.
The single chip microcomputer U5 detects the water temperature value in the water heater water container through the temperature sensor and controls the nixie tube DS1 to display the water temperature value detected by the temperature sensor.
The water heater is also provided with a temperature limiter, and when the temperature in the water heater exceeds a preset value, the temperature limiter disconnects the power supply;
the water heater is also provided with a mechanical temperature controller, and the temperature controller enables the water temperature in the water container of the water heater to be within a preset range by controlling the working state of the electric heating tube.
Through setting up switching power supply module to earth-leakage protector, provide a relatively stable operational environment for it, keep away from the high temperature and high humidity water heater, reduce switching power supply module's probability, eliminated the potential safety hazard, further improved the safety in utilization.
The above embodiments are only used for illustrating the present invention, and not for limiting the present invention, and those skilled in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.
Claims (8)
1. A water heater earth leakage protection system, characterized in that, water heater earth leakage protection system includes: the temperature display device comprises a leakage protector, a temperature display module and a temperature sensor;
the temperature sensor is arranged in the water heater;
a switching power supply module is arranged in the leakage protector and supplies power to the temperature display module;
the temperature sensor is used for detecting the water temperature value in the water heater inner container, and the temperature display module is used for displaying the water temperature value in the water heater inner container.
2. The leakage protection system for the water heater as claimed in claim 1, further comprising a heat preservation detection module for detecting an operating state of the water heater:
the temperature display module is also used for displaying whether the water heater is in a heat preservation state or a heating state.
3. A water heater earth leakage protection system as claimed in claim 2, wherein said insulation detection module comprises an isolation module for electrical isolation.
4. A water heater leakage protection system as claimed in claim 3, wherein said leakage protector comprises:
the action module is used for switching off or switching on the power supply;
the leakage protection control module is used for controlling the action module to be switched off or switched on;
and the electric leakage detection module is used for detecting whether the live wire and the zero line have electric leakage or not.
5. A water heater leakage protection system as claimed in claim 2, wherein said temperature display module further comprises a first status indicator light and a second status indicator light;
the first state indicating lamp is used for indicating that the water heater is in a heat preservation state;
the second state indicating lamp is used for indicating that the water heater is in a heating state.
6. The leakage protection system of claim 2, wherein a first end of the thermal insulation detection module is electrically connected to the neutral line, and a second end of the thermal insulation detection module is electrically connected to the live line end of the electrical heating tube.
7. The leakage protection system of claim 6, wherein the heat preservation detection module detects whether the water heater is in a heat preservation state or a heating state by detecting whether the electric heating tube is operated.
8. A water heater leakage protection system as claimed in claim 3, wherein said isolation module is an opto-coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921953618.4U CN212362453U (en) | 2019-11-13 | 2019-11-13 | Water heater leakage protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921953618.4U CN212362453U (en) | 2019-11-13 | 2019-11-13 | Water heater leakage protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212362453U true CN212362453U (en) | 2021-01-15 |
Family
ID=74137011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921953618.4U Active CN212362453U (en) | 2019-11-13 | 2019-11-13 | Water heater leakage protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212362453U (en) |
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2019
- 2019-11-13 CN CN201921953618.4U patent/CN212362453U/en active Active
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