Leakage protection device for electric appliance

Abstract

The invention discloses an electric leakage protection device for an electric appliance, which comprises the electric appliance connected with a power supply at the output end of the electric leakage protection device, and is characterized in that a ground wire on the electric appliance is connected with the electric leakage protection device and is connected in series with an electromagnetic coil of the electric leakage protector, and the electric leakage protection device drives the electromagnetic coil through the electric leakage current of the ground wire. Therefore, the contact iron core is controlled to disconnect the circuit. According to the invention, the electromagnetic coil is connected in series on the grounding wire of the electric appliance, and the electric appliance drives the electromagnetic coil through the leakage current of the grounding wire to control the contact iron core to disconnect the circuit, so that the secondary protection effect on the leakage of the electric appliance is achieved, and the safety performance of the electric appliance in the use process is improved.

Description

Technical Field

[0001] The invention relates to the technical field of leakage protection, in particular to a leakage protection device for electrical appliances. Background Art

[0002] When an electrical appliance leaks electricity, the universal leakage lock cuts off the power supply in a very short time, thereby protecting the electrical appliance from damage and protecting human safety. The above results are used as the second protection device for electrical appliances. The first protection device is a commonly used leakage protector. In the prior art, there are many factors that cause leakage to not trip:

[0003] 1. The leakage protector has been used for a long time and has aged and lost control. 2. The cause of the arc. 3. The power of the leakage protector is too large. 4. The wire loop is too long. When the leakage protector does not trip or trips slowly when the appliance leaks electricity, the above leakage protection device can instantly cut off the power supply and play a protective role.

[0004] Therefore, a leakage protection device for electrical appliances becomes a problem that needs to be solved urgently by the whole society. Summary of the invention

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is: a leakage protection device for an electrical appliance, comprising an electrical appliance, wherein the electrical appliance is connected to the power supply at the output end of the leakage protection device, the ground wire on the electrical appliance is connected to the leakage protection device, and the electromagnetic coil of the leakage protector is connected in series, and the leakage protection device drives the electromagnetic coil through the leakage current of the ground wire to control the contact core to disconnect the circuit.

[0006] Furthermore, the electromagnetic coil includes two parts: a coil and an iron core.

[0007] Furthermore, a spring is arranged below the electromagnetic coil, a contact iron core is arranged below the spring, and a reset switch is arranged on the side thereof.

[0008] The advantages of the invention compared with the prior art are:

[0009] The present invention connects an electromagnetic coil in series with a grounding wire on an electrical appliance, and the electrical appliance drives the electromagnetic coil through the leakage current of the grounding wire to control the contact core to disconnect the circuit, thereby achieving a secondary protection effect on the electrical appliance leakage and improving the safety performance of the electrical appliance during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The present invention is a schematic structural diagram of a leakage protection device for electrical appliances.

[0011] As shown in the figure: 1. Electrical appliance, 2. Electromagnetic coil, 3. Spring, 4. Contact core, 5. Reset switch. DETAILED DESCRIPTION

[0012] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0013] The present invention is described in detail with reference to the accompanying drawings.

[0014] The present invention provides a leakage protection device for an electrical appliance in a specific implementation, comprising an electrical appliance 1, wherein the electrical appliance 1 is connected to an output power supply of the leakage protection device, a ground wire on the electrical appliance 1 is connected to the leakage protection device, and an electromagnetic coil 2 of the leakage protection device is connected in series, wherein the leakage protection device drives the electromagnetic coil 2 through the leakage current of the ground wire to control the contact core to disconnect the circuit.

[0015] Example:

[0016] When the present invention is working, since the electromagnetic coil 2 is connected in series to the grounding wire on the electrical appliance 1, when current appears on the grounding wire on the electrical appliance, the coil and the iron core inside the electromagnetic coil 2 will generate magnetism, and the generated magnetism will attract the contact iron core 4, thereby disconnecting the circuit, and playing a secondary leakage protection effect on the electrical appliance. After the power is turned off, after checking the circuit and finding the cause of the leakage, it can be manually reset through the reset switch 5.

[0017] The electrical appliance may be a water heater or other electrical appliances.

[0018] As a further explanation of the present invention, the electromagnetic coil 2 includes two parts: a coil and an iron core.

[0019] As a further elaboration of the present invention, a spring 3 is disposed below the electromagnetic coil 2 , a contact core 4 is disposed below the spring 3 , and a reset switch 5 is disposed on the side thereof.

[0020] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A leakage protection device for an electrical appliance, comprising an electrical appliance, wherein the electrical appliance is connected to an output power supply of the leakage protection device, characterized in that: The ground wire on the electrical appliance is connected to the leakage protection device, and is connected in series to the electromagnetic coil of the leakage protection device. The leakage protection device drives the electromagnetic coil through the leakage current of the ground wire to control the contact iron core to disconnect the circuit.

2. A leakage protection device for electrical appliances according to claim 1, characterized in that: The electromagnetic coil comprises two parts: a coil and an iron core.

3. A leakage protection device for electrical appliances according to claim 2, characterized in that: A spring is arranged below the electromagnetic coil, a contact iron core is arranged below the spring, and a reset switch is arranged on the side of the contact iron core.

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