CN208075346U - Anti-creeping grounding structure, water pipe screw head with same and electric water heater - Google Patents

Abstract

The utility model belongs to the technical field related to leakage protection, and discloses an anti-leakage grounding structure. The water flow is conducted, and the outer side is used for grounding; the isolated water column L1 between the conductive part inside the metal terminal and the outlet of the first water flow channel can reduce the conducted voltage to below the safe voltage. When the inflowing water is electrified, the isolated water column L1 between the conductive part inside the metal terminal and the outlet of the first water flow channel will form a large water resistance, and the leakage voltage will be reduced below the safe voltage by using the principle of resistance division to ensure the user's personal safety. The utility model also provides a water pipe screw head and an electric water heater with an anti-leakage grounding structure, which can reduce the leakage voltage below the safe voltage when other electric appliances leak electricity and electrify the electric water heater.

Description

Leakage-proof grounding structure, water pipe screw head and electric water heater with the structure

technical field

The utility model relates to the technical field related to leakage protection, in particular to a leakage prevention grounding structure and a water pipe screw head and an electric water heater with the structure.

Background technique

At present, with the improvement of people's living standards, water heaters have entered thousands of households. As a special electrical product, water heaters have particularly important safety features. Once the water heater leaks, it will directly endanger people's lives. At present, when the inner tank of the water heater or the electric heater leak electricity, the leakage protection is usually realized by grounding.

However, there are the following problems in the above-mentioned leakage protection method:

At present, the grounding wires of various household appliances in most users’ residences are connected to each other, and the leakage protection of the inner tank or electric heater is realized through the grounding. As a result, the ground wire of the electric water heater is electrified, and the inner tank of the water heater may be charged with high voltage. If the water outlet is not protected, it will cause the user's water to be electrified, posing a safety threat to the user.

Utility model content

The purpose of this utility model is to provide an anti-leakage grounding structure and a water pipe screw head with this structure, which can reduce the leakage voltage to below the safe voltage through the isolated water column L1 in the first water flow channel, ensuring safe water use for users.

Another object of the present utility model is to provide an electric water heater. When other electrical appliances leak electricity and electrify the electric water heater, the leakage voltage can be reduced below the safe voltage by isolating the water column L1.

For this purpose, the utility model adopts the following technical solutions:

An anti-leakage grounding structure, comprising an insulated first water flow channel, a metal connection terminal is arranged on the first water flow channel, the inner side of the metal connection terminal is connected to the water flow in the first water flow channel, and the outer side is connected to the first water flow channel. Used for grounding; the isolated water column L1 between the conductive part inside the metal connection terminal and the outlet of the first water flow channel can reduce the conducted voltage to below the safe voltage.

Preferably, the entrance of the first water flow channel communicates with an insulated second water flow channel, and the isolated water column L2 between the entrance of the second water flow channel and the conduction part inside the metal terminal can separate the second water flow channel. The voltage conducted at the inlet of the water flow channel drops below the safe voltage.

The utility model also provides a water pipe screw head, which includes a first water flow channel formed by an insulated first pipe body. The water flow in the first water flow channel is conducted, and the outside is used for grounding; the isolated water column L1 between the conductive part inside the metal terminal and the outlet of the first water flow channel can reduce the conducted voltage to below the safe voltage .

Preferably, it also includes a second water flow channel formed by an insulated second pipe body, the second water flow channel is connected to the inlet of the first water flow channel, and the second water flow channel inlet is connected to the inner guide of the metal terminal. The isolated water column L2 between the passage parts can reduce the voltage conducted at the inlet of the second water flow channel to below the safe voltage.

Preferably, an installation hole is opened on the side wall of the first pipe body, and the metal connection terminal is penetrated in the installation hole.

Preferably, an insert disposed in the installation hole is further included, and the metal connection terminal is sealed and pierced through the insert.

The utility model also provides an electric water heater, which includes an inner container, a water inlet and a water outlet, and is characterized in that a metal connection terminal is arranged on the first water flow channel insulated at the water inlet and/or the water outlet, The inside of the metal connection terminal is connected to the water flow in the first water flow channel, and the outside is used for grounding; the isolated water column L1 between the conduction part inside the metal connection terminal and the outlet of the first water flow channel can conduct the conduction The voltage drops below the safe voltage.

Preferably, the entrance of the first water flow channel communicates with an insulated second water flow channel, and the isolated water column L2 between the entrance of the second water flow channel and the conduction part inside the metal terminal can separate the second water flow channel. The voltage conducted at the inlet of the water flow channel drops below the safe voltage.

The beneficial effects of the utility model:

When the electric leakage of the electric appliance with the above-mentioned anti-leakage structure or the electric leakage of other electric appliances causes reverse conduction and the outflow water is electrified, when the charged water passes through the isolated water column L1 between the conductive part inside the metal terminal and the outlet of the first water flow channel, the isolated water column L1 will form a relatively large resistance, and the leakage voltage will be lowered below the safe voltage by using the principle of resistive voltage division, so that the voltage of the water flowing out of the inner tank of the water heater is below the safe voltage. At the same time, the charged water is further grounded through the metal connection terminal at the front end of the isolated water column L1, which can further lower the voltage there and form a good protection. Further cooperation with the isolated water column L2 in front of the metal terminal can reduce the voltage exported to the ground electrode to a safe voltage, and weaken the impact on the surrounding electrical appliances connected to the ground electrode at the same time.

Description of drawings

Fig. 1 is the structural representation of the water pipe screw head of the second embodiment of the utility model;

Fig. 2 is a schematic structural view of the water pipe screw head of the third embodiment of the utility model;

Fig. 3 is a schematic structural view of the electric water heater according to the third embodiment of the utility model.

In the picture:

1. Water pipe joint; 2. Liner; 11. First water flow channel; 12. Metal terminal; 13. Mounting hole; 14. Insert; 15. Inner wire; 16. Outer wire; 17. Inner tube; 18. Outer casing.

Detailed ways

The technical scheme of the utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments.

Embodiment one

This embodiment provides an anti-leakage grounding structure. The anti-leakage grounding structure includes an insulated first water flow channel. Specifically, a water supply channel is opened in the middle of the first water flow channel, and a metal channel is arranged on the first water flow channel. The connection terminal, the inner side of the metal connection terminal is connected to the water flow in the first water flow channel, and the outer side is used for grounding. Through the above-mentioned first water flow channel, when the electric appliance with the anti-leakage grounding structure carries a high voltage (the voltage that is transmitted to the electric appliance by leakage of other electric appliances, or the voltage of the electric leakage of the electric appliance itself), the conduction part inside the above-mentioned metal terminal and the first The isolated water column L1 between the outlets of a water flow channel will form a water resistance with a large resistance value. Using the principle of resistance voltage division, the leakage voltage of conduction can be reduced to below the safe voltage, and then the electrical appliances with the leakage prevention grounding structure will flow out. The voltage of the water is below the safe voltage, which ensures the safety of water for users.

Furthermore, in this embodiment, the metal connection terminal is grounded, which can further lower the voltage at this place, forming better protection.

In this embodiment, preferably, there is an insulated second water flow channel connected to the entrance of the first water flow channel, and the isolated water column L2 between the entrance of the second water flow channel and the conductive part inside the metal terminal can divide the second The voltage conducted at the inlet of the water flow channel drops below the safe voltage. When the electric appliance with the anti-leakage grounding structure leaks electricity itself, the above-mentioned isolated water column L2 will form a water resistance. Through the principle of resistance voltage division, the isolated water column L2 will reduce the leakage voltage below the safe voltage, and further cooperate with the isolated water column L1. Together they form a water resistance with a greater resistance, which further ensures that the voltage of the water flowing out of the electrical appliances with the leakage-proof grounding structure is always below the safe voltage.

And in this embodiment, after stepping down by isolating the water column L2, the voltage grounded through the above-mentioned metal terminal is always below the safe voltage, and then when the electric appliance with the leakage prevention grounding structure itself leaks and conducts to the grounding electrode, it can also avoid its Leakage will cause other electrical appliances to be charged, further protecting the personal safety of users.

Embodiment two

As shown in Figure 1, this embodiment provides a water pipe screw head 1, which includes a first water flow channel 11 formed by an insulated first pipe body, and a metal terminal 12 is arranged on the first pipe body, The inner side of the metal connection terminal 12 is connected to the water flow in the first water flow channel 11 , and the outer side is used for grounding. The isolated water column L1 between the conductive part inside the metal connection terminal 12 and the outlet of the first water flow channel 11 can reduce the conducted leakage voltage below the safe voltage.

Specifically, a mounting hole 13 is radially opened on the side wall of the first tube body, and the metal connection terminal 12 is penetrated in the mounting hole 13 .

A circular insert 14 is disposed in the installation hole 13 , the above-mentioned metal connection terminal 12 is sealed and pierced on the insert 14 , and one end can communicate with the water flow in the first water flow channel 11 . The setting of the insert 14 can ensure absolute sealing between the metal terminal 12 and the installation hole 13, preventing water from flowing out through the installation hole 13, causing damage to electrical appliances and threatening the safety of users.

The above-mentioned water pipe screw head 1 of this embodiment is grounded through the outer side of the metal terminal 12. When the electric leakage of the electric appliance itself or the electric leakage of other electric appliances causes reverse conduction and the outflow water is electrified, the above-mentioned isolated water column L1 will form a large resistance value. The water resistor uses the principle of resistance voltage division to reduce the leakage voltage below the safe voltage, so that the voltage of the water flowing out of the electrical appliance with the water pipe screw head 1 is below the safe voltage, and the metal terminal 12 is grounded, which can further pull down the water resistance. The local voltage forms a better protection and further ensures the safety of water for users.

Embodiment three

This embodiment provides a water pipe screw head 1, which can be referred to FIG. 2. On the basis of Embodiment 2, this embodiment adds a second water flow channel 17. Specifically, the second water flow channel 17 is formed by an insulated second pipe One end of which is connected to the inlet of the first water flow channel 11, and the other end can be located in the electrical appliance with the water pipe screw head 1, and between the inlet of the second water flow channel 17 and the conductive part inside the metal terminal 12 The isolated water column L2 can reduce the voltage conducted at the inlet of the second water flow channel 17 below the safe voltage.

Through the above-mentioned second water flow channel 17, when the electric appliance with the water pipe screw head 1 leaks electricity, the above-mentioned isolated water column L2 reduces the leakage voltage below the safe voltage, ensuring that the outlet water voltage of the electric appliance is below the safe voltage. Further cooperating with the isolated water column L1, the two together form a water resistance with a larger resistance value, which further ensures that the leakage voltage can be reduced below the safe voltage. In this embodiment, preferably, the length of the isolated water column L2 is greater than the length of the isolated water column L1.

In this embodiment, metal threaded inserts are provided at both ends of the above-mentioned first pipe body. Specifically, the metal threaded inserts at the upper end are called inner wires 15 , and the metal threaded inserts at the lower end are called outer wires 16 . The outlet end of the second water flow channel 17 communicates with the inlet of the first water flow channel 11 through the inner wire 15 . The above-mentioned outer wire 16 is arranged at the water outlet end of the first water flow channel 11 for connecting the water outlet pipeline.

Further, in this embodiment, an outer sleeve 18 is sheathed on the top of the second water flow channel 17, and a channel for water supply and circulation is formed between the outer sleeve 18 and the second water flow channel 17, and the channel and the second water flow channel 17 Connected to each other, further increasing the length of the isolated water jet L2.

In this embodiment, on the basis of the first water flow channel 11, a second water flow channel 17 is further provided, which can effectively solve the impact on other electrical appliances when the electric appliance with the water pipe screw 1 itself leaks electricity, that is, reduce the pressure by isolating the water column L2 Finally, it can reduce the charged voltage of other electrical appliances caused by the electrical leakage of the electrical leakage prevention grounding structure, and further protect the personal safety of users.

Embodiment Four

As shown in Figure 3, this embodiment provides an electric water heater, including an inner tank 2, a water inlet and a water outlet, and the water pipe screw head 1 described in the third embodiment is arranged at the water inlet and/or the water outlet. The outer side of the metal terminal 12 of the screw head 1 is grounded, and the second water flow channel 17 of the water pipe screw head 1 is located inside the inner tank 2 .

Through the above-mentioned water pipe screw head 1, when the electric water heater itself leaks electricity or other electrical appliances leak electricity to cause the electric water heater to be electrified, the water in the inner tank 2 will be electrified, and at this time, the entrance of the second water flow channel 17 is connected to the inner side of the metal terminal 12. The isolated water column L2 between them and the isolated water column L1 between the conductive part inside the metal terminal 12 and the outlet of the first water flow channel 11 of the water pipe screw head 1 can reduce the leakage voltage below the safe voltage, so that the water pipe screw head 1 The voltage of the flowing water is below the safe voltage, which will not pose a threat to the safety of users.

And in the present embodiment, when isolating water column L2 and leakage voltage drops below safety voltage, the voltage grounded through above-mentioned metal connection terminal 12 is below safety voltage all the time, and then can reduce the leakage caused by the electric water heater with this anti-leakage grounding structure. Lead to live voltage of other electrical appliances, to further protect the personal safety of users.

Apparently, the above-mentioned embodiments of the present utility model are only examples for clearly illustrating the present utility model, rather than limiting the implementation manner of the present utility model. For those of ordinary skill in the art, on the basis of the above description, other changes or changes in different forms can also be made. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the utility model shall be included in the protection scope of the claims of the utility model.

Claims (8)

1. a kind of anticreep ground structure, which is characterized in that the first water stream channel for including an insulation is logical in first flow One metal wiring terminal, the metal wiring terminal inside and the water conduction in first water stream channel are set on road, outside Side is for being grounded；Water column L1 is isolated between conducting position is exported with first water stream channel on the inside of the metal wiring terminal The voltage of conduction can be down to safe voltage or less.

2. anticreep ground structure according to claim 1, which is characterized in that the entrance of first water stream channel connects Be connected with the second water stream channel of an insulation, the second water stream channel import and conducting position on the inside of the metal wiring terminal it Between isolation water column L2 can by the second water stream channel entrance conduct voltage be down to safe voltage or less.

3. a kind of water pipe screw head includes the first water stream channel of the first tube body composition of insulation, which is characterized in that described first One metal wiring terminal, the metal wiring terminal inside and the water conduction in first water stream channel are set on tube body, Outside is for being grounded；Water column is isolated between conducting position is exported with first water stream channel on the inside of the metal wiring terminal The voltage of conduction can be down to safe voltage or less by L1.

4. water pipe screw head according to claim 3, which is characterized in that further include the second water that the second tube body of insulation is constituted Circulation road, second water stream channel are communicated in the import of first water stream channel, the second water stream channel import and institute State what the isolation water column L2 on the inside of metal wiring terminal between conducting position can conduct the second water stream channel entrance Voltage is down to safe voltage or less.

5. water pipe screw head according to claim 3, which is characterized in that first tube wall offers mounting hole, institute Metal wiring terminal is stated to be threaded through in the mounting hole.

6. water pipe screw head according to claim 5, which is characterized in that further include the inserts being arranged in the mounting hole, The metal wiring terminal sealing is threaded through on the inserts.

7. a kind of electric heater, including liner, inlet and outlet, which is characterized in that the water inlet and/or it is described go out One metal wiring terminal, the metal wiring terminal inside and first water are set on the first water stream channel to insulate at the mouth of a river Water conduction in circulation road, outside is for being grounded；Conducting position and first flow are logical on the inside of the metal wiring terminal The voltage of conduction can be down to safe voltage or less by the isolation water column L1 between road outlet.

8. electric heater according to claim 7, which is characterized in that the entrance of first water stream channel is communicated with one Second water stream channel of insulation, on the inside of the second water stream channel import and the metal wiring terminal between conducting position every The voltage that the second water stream channel entrance is conducted can be down to safe voltage or less from water column L2.