A multifunctional leakage protection device

Abstract

The utility model discloses a multifunctional leakage safety protector, comprising a leakage detection circuit, a photoelectric coupler OC1 and a protection circuit. One end of the leakage detection circuit is provided with a detection line, the detection line is connected to a leakage detection object, the other end of the leakage detection circuit is connected to ports 1 and 2 of one end of the photoelectric coupler OC1, and ports 3 and 4 of the other end of the photoelectric coupler OC1 are connected to the protection circuit, wherein the detection objects are ground wires, conductive objects, electrical appliance housings, metals in waterways, etc., and also comprises voice, touch and timing modules. The safety protector has a simple and reliable structure and can be used alone.

Description

Technical Field

[0001] The utility model relates to the technical field of security protection, in particular to a leakage security protector. Background Art

[0002] As more and more household and industrial electrical appliances are adopted in various fields, the issue of electricity safety has become increasingly prominent. In order to prevent leakage accidents, people install leakage protectors at the output end of the power grid or the input end of household appliances. The existing leakage protection devices have a single function, and the detection objects are limited. There are still many leakage loopholes, and there are also many shortcomings.

[0003] At present, the common leakage phenomena are as follows:

[0004] 1. Internal leakage: The national standard for electrical appliances is current-type leakage detection, and the ground wire must be effectively connected. In China's power usage environment, there are many situations such as no ground wire, the ground wire is suspended, and the ground wire resistance is too large, which results in the inability to effectively provide "internal" leakage protection when the appliance leaks;

[0005] 2. External leakage: The main ground wire has poor contact, there are too many household appliances, and the leakage of other appliances is transmitted through the "mesh" ground wire. Finally: the ground wire itself is the role of leakage protection, and it becomes the "culprit" of leakage;

[0006] 3. The outer shell is charged: the special circumstances of the power environment being humid and flooding will cause problems such as creepage distance, and it will also cause the human body to touch the outer shell of the electrical equipment or conductive objects or electricity in the water, causing leakage accidents;

[0007] Through long-term analysis and summary of various types of electric leakage casualties: A. No alarm for internal leakage without grounding wire; B. External leakage may occur when grounding wire is connected; C. The actual situation of irregular power usage environment; It is hard to guard against. Therefore, how to overcome the above-mentioned technical problems and defects has become a key issue that needs to be solved. Utility Model Content

[0008] In order to solve the above technical problems, the utility model provides the following technical solutions: a multifunctional leakage security protector, which includes a leakage detection circuit, a photoelectric coupler OC1 and a protection circuit. One end of the leakage detection circuit has a detection line, and the detection line is connected to the leakage detection object. The other end of the leakage detection circuit is connected to ports 1 and 2 at one end of the photoelectric coupler OC1, and ports 3 and 4 at the other end of the photoelectric coupler OC1 are connected to the protection circuit.

[0009] As a preferred technical solution of the utility model, the leakage detection object is a ground wire and / or a conductive object and / or a metal component in a water channel.

[0010] As a preferred technical solution of the utility model, the detection circuit includes a rectifier diode D1, a resistor R2, a capacitor C1, a resistor R1, and a neon bulb. One end of the rectifier diode D1 is connected to the detection line, and the other end is connected to port 1 of the photoelectric coupler OC1. One end of the resistor R1 and the neon bulb is connected to the power supply terminal, and the other end is connected to port 2 of the photoelectric coupler OC1; one end of the resistor R2 is connected in parallel to the rectifier diode D1, and the other end is connected in parallel to the neon bulb; one end of the container C1 is connected in parallel to the rectifier diode D1, and the other end is connected in parallel to the neon bulb.

[0011] As a preferred technical solution of the utility model, the protection circuit includes a resistor R3, a resistor R4, a capacitor C2, a field effect transistor Q1, and an electromagnetic coil, one end of the R4 is connected to one end of the electromagnetic coil, and the other end is connected to port 4 of the photoelectric coupler OC1; the resistor R3 and the capacitor C2 are connected in parallel to ports 3 and 4 of the photoelectric coupler OC1; the gate of the field effect transistor Q1 is connected to port 4 of the photoelectric coupler OC1; the source of the field effect transistor Q1 is connected to port 3 of the photoelectric coupler OC1; and the drain of the field effect transistor Q1 is connected to the other end of the electromagnetic coil.

[0012] As a preferred technical solution of the utility model, the electromagnetic coil is electrically connected to an electrical switch element, and the electrical switch element is electrically connected to an electrical device.

[0013] As a preferred technical solution of the utility model, the electrical switch element is any one of a release, a relay, a contactor, a circuit breaker, a fuse, an isolating switch, and an air switch.

[0014] As a preferred technical solution of the utility model, the leakage security protector also includes a voice module, a touch module and a timing module. The voice module, the touch module and the timing module are all electrically connected to the field effect tube. The voice module, the touch module and the timing module can receive external signals and transmit them to the field effect tube. The field effect tube performs on or off operations according to the signals to drive the electrical switching elements to control the power on and off of the electrical equipment.

[0015] As a preferred technical solution of the present utility model, the timing module is electrically connected to the voice module and can receive voice electrical signals.

[0016] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0017] 1. This solution is a voltage-type protector consisting only of a leakage detection circuit, a photocoupler OC1 and a protection circuit. It has a simple structure and can detect through ground wires, conductive objects and metal parts in water channels, greatly increasing the detection range.

[0018] 2. In this solution, the protector plays the role of switch and standby. The power of the electrical equipment can be cut off through the voice and touch modules. In this way, the standby mode of the electrical equipment is turned off, and the protector replaces the electrical equipment. The power on and off of the electrical equipment can be achieved through the protector.

[0019] 3. In this solution, the voice module is connected to the timing module, and the timer can be realized through voice signals, which is conducive to preventing overcharging and protecting the safety of electrical equipment. In the timing instructions for water pumps, air conditioners, water heaters, etc., the set time can be used to power on and off electrical equipment, thereby achieving the purpose of unattended operation, saving time and saving electricity;

[0020] 4. The detection circuit of this solution does not rely on IC chip or drive output module, but directly drives the protection circuit, which is more convenient and faster to execute. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the leakage protection device of the utility model;

[0022] Figure 2 This is a schematic diagram of the connection of each module of the utility model;

[0023] Figure 3 This is a circuit diagram of the voice module of the utility model; DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0025] Example

[0026] Please refer to Figure 1 , 2 As shown, the utility model provides a multifunctional leakage security protector, including a leakage detection circuit, a photocoupler OC1 and a protection circuit. One end of the leakage detection circuit has a detection line, the detection line is connected to the leakage detection object, the other end of the leakage detection circuit is connected to ports 1 and 2 at one end of the photocoupler OC1, and ports 3 and 4 at the other end of the photocoupler OC1 are connected to the protection circuit, that is, the leakage detection circuit is connected to one end of the photocoupler OC1, and the other end of the photocoupler OC1 is connected to the protection circuit.

[0027] Among them, this scheme uses voltage detection as a condition for leakage protection. Therefore, the leakage detection object is the ground wire or a conductive object or a metal part in the water channel, or it can be an electrical appliance casing. As long as the voltage is detected, power-off protection can be achieved. Therefore, this scheme can also be used normally in an environment without a ground wire.

[0028] The detection circuit of the protector includes a rectifier diode D1, a resistor R2, a capacitor C1, a resistor R1, and a neon bulb. One end of the rectifier diode D1 is connected to the detection line, and the other end is connected to port 1 of the photoelectric coupler OC1. One end of the resistor R1 and the neon bulb is connected to the power supply terminal, and the other end is connected to port 2 of the photoelectric coupler OC1; one end of the resistor R2 is connected in parallel to the rectifier diode D1, and the other end is connected in parallel to the neon bulb; one end of the container C1 is connected in parallel to the rectifier diode D1, and the other end is connected in parallel to the neon bulb, forming a complete detection circuit with simple circuit layout and high stability.

[0029] The protection circuit of the protector includes a resistor R3, a resistor R4, a capacitor C2, a field effect tube Q1, and an electromagnetic coil. One end of R4 is connected to one end of the electromagnetic coil, and the other end is connected to port 4 of the photocoupler OC1; the resistor R3 and the capacitor C2 are connected in parallel to ports 3 and 4 of the photocoupler OC1; the gate of the field effect tube Q1 is connected to port 4 of the photocoupler OC1; the source of the field effect tube Q1 is connected to port 3 of the photocoupler OC1; the drain of the field effect tube Q1 is connected to the other end of the electromagnetic coil. The field effect tube can realize circuit protection by turning on and off. The on and off of the field effect tube can drive the on and off of the connected electrical switch element (trip, relay, contactor, etc.), thereby realizing the on and off of the power supply of the electrical equipment. The electrical switch element can be any one of a trip, a relay, a contactor, a circuit breaker, a fuse, an isolating switch, and an air switch.

[0030] In another embodiment, the leakage security protector also includes a voice module, a touch module and a timing module, and the voice module, the touch module and the timing module are all electrically connected to the field effect tube, and the voice module, the touch module and the timing module can receive external signals and transmit them to the field effect tube, and the field effect tube performs on or off operations according to the signals to drive the electrical switch element to control the power on and off of the electrical equipment. On the premise of ensuring the safety of electrical equipment and no leakage, energy-saving factors must also be considered: due to various factors such as humid environment, wet hands, and high installation height, many users do not unplug their home appliances. The standby state of home appliances turns off the power of the appliances, but the power plug is not unplugged. In fact, the power supply parts of many home appliances are still consuming electricity. For example: the standby state of a water storage water heater consumes about 30 degrees of electricity per month, and the standby state of a washing machine consumes about 3 degrees of electricity per month; while our leakage security protector consumes only 1 degree of electricity in the standby state for two months. By controlling the switch through the voice module and touch module on the leakage security protector, the power supply of the protected appliance can be completely turned off through the electrical switch element to save energy;

[0031] Reference Figure 3 In this embodiment, the timing module is connected to the voice module, can receive voice electrical signals, and can control the timer through voice. The voice module includes a microphone, a voice IC chip, a signal amplifier and other circuits. When the microphone collects the sound signal, the signal amplifier circuit amplifies the weak signal and transmits it to the voice IC chip. After the voice IC chip receives the signal, it sends a corresponding instruction to the timer, so that the timer performs timing operations according to the instructions. This scheme can prevent overcharging and protect the safety of electrical equipment. It can give timing instructions to electrical equipment such as water pumps, air conditioners, and water heaters, so that the set time can be used to power on and off the electrical equipment, thereby achieving the purpose of unattended operation, saving time, and saving electricity.

[0032] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. The use of "one" or "an" and other similar words in the specification and claims of this application does not necessarily indicate a quantitative limitation. "Include" or "comprises" and other similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0033] The exemplary implementation of the present invention is described in detail above with reference to the preferred embodiments. However, it can be understood by those skilled in the art that, without departing from the concept of the present invention, various modifications and variations can be made to the above-mentioned specific embodiments, and various combinations of the various technical features and structures proposed in the present invention can be made without exceeding the protection scope of the present invention.

Claims

1. A multifunctional leakage protection device, characterized in that: The leakage protection device includes a leakage detection circuit, a photocoupler OC1 and a protection circuit. One end of the leakage detection circuit has a detection line, which is connected to a leakage detection object. The other end of the leakage detection circuit is connected to ports 1 and 2 at one end of the photocoupler OC1, and ports 3 and 4 at the other end of the photocoupler OC1 are connected to the protection circuit. The protection circuit includes a resistor R3, a resistor R4, a capacitor C2, a field effect transistor Q1, and an electromagnetic coil. One end of the R4 is connected to one end of the electromagnetic coil, and the other end is connected to port No. 4 of the photoelectric coupler OC1; the resistor R3 and the capacitor C2 are connected in parallel to ports No. 3 and No. 4 of the photoelectric coupler OC1; the gate of the field effect transistor Q1 is connected to port No. 4 of the photoelectric coupler OC1; the source of the field effect transistor Q1 is connected to port No. 3 of the photoelectric coupler OC1; and the drain of the field effect transistor Q1 is connected to the other end of the electromagnetic coil.

2. The multifunctional leakage protection device according to claim 1 is characterized in that: The leakage detection object is a ground wire and / or a conductive object and / or a metal component in a waterway.

3. The multifunctional leakage protection device according to claim 1 is characterized in that: The detection circuit includes a rectifier diode D1, a resistor R2, a capacitor C1, a resistor R1, and a neon bulb. One end of the rectifier diode D1 is connected to the detection line, and the other end is connected to port 1 of the photoelectric coupler OC1. One end of the resistor R1 and the neon bulb is connected to a power supply terminal, and the other end is connected to port 2 of the photoelectric coupler OC1; one end of the resistor R2 is connected in parallel to the rectifier diode D1, and the other end is connected in parallel to the neon bulb; one end of the container C1 is connected in parallel to the rectifier diode D1, and the other end is connected in parallel to the neon bulb.

4. The multifunctional leakage protection device according to claim 3 is characterized in that: The electromagnetic coil is electrically connected to an electrical switch element, and the electrical switch element is electrically connected to an electrical device.

5. The multifunctional leakage protection device according to claim 4 is characterized in that: The electrical switch element is any one of a release, a relay, a contactor, a circuit breaker, a fuse, an isolating switch, and an air switch.

6. The multifunctional leakage protection device according to claim 3 is characterized in that: The leakage safety protector also includes a voice module, a touch module and a timing module. The voice module, the touch module and the timing module are all electrically connected to the field effect tube. The voice module, the touch module and the timing module can receive external signals and transmit them to the field effect tube. The field effect tube performs an on or off operation according to the signal to drive the electrical switch element to control the power on and off of the electrical equipment.

7. The multifunctional leakage protection device according to claim 6 is characterized in that: The timing module is electrically connected to the voice module and can receive voice electrical signals.

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