Electric water heater with electric shock prevention function

Abstract

This invention relates to an electric water heater, specifically an electric water heater with anti-electric shock function. An electric water heater with anti-electric shock function includes a water heater body, with an inlet pipe at the bottom of the water heater body for water intake, and a protective box mounted on the water heater body. The protective box contains a water flow channel and a sealing cavity, which are connected by a connecting channel. The water flow channel is connected to the inlet pipe. A water sealing component is provided in the sealing cavity, and a sealing tongue is provided in the connecting channel, which is adapted to the water flow channel. The water sealing component drives the sealing tongue to move. An inductive element is provided in the water flow channel, and the inductive element is connected to the water sealing component. By cutting off the water flow, leakage current is prevented from being conducted into the water heater body through the water flow, preventing the user from being injured by leakage current during use.

Description

Technical Field

[0001] This invention relates to an electric water heater, and more specifically to an electric water heater with an anti-electric shock function. Background Technology

[0002] As a common household appliance, the safety of electric water heaters must be guaranteed. Existing electric water heaters are equipped with leakage protection. When a leakage occurs in the internal electronic components such as the heating element, the leakage protection will automatically activate, tripping the circuit and providing leakage protection. However, this protection only applies to leakage caused by the water heater itself. The water inlet pipe of the electric water heater needs to be connected to the household water pipes, which are almost always installed close to or buried in the wall. Similarly, household electrical circuits are similarly installed. This means that leakage from electrical wiring or other household appliances can be conducted to the water in the water heater through walls or other objects. In this case, even if the water heater triggers the leakage protection, the leakage still exists. Users who are unaware of this and use the water from the water heater are highly likely to suffer electric shock. This phenomenon is not uncommon in old, dilapidated buildings with outdated wiring or in rented apartments. Summary of the Invention

[0003] The purpose of this invention is to provide an electric water heater with anti-electric shock function to prevent the water inside the water heater from becoming electrified and causing injury.

[0004] To achieve the above objectives, the technical solution adopted by this invention is as follows:

[0005] An electric water heater with anti-electric shock function includes a water heater body, an inlet pipe for water intake at the bottom of the water heater body, a protective box mounted on the water heater body, a water flow channel and a sealing cavity inside the protective box, the water flow channel and the sealing cavity being connected by a connecting channel, the water flow channel being connected to the inlet pipe, a water sealing component inside the sealing cavity, a sealing tongue plate inside the connecting channel, the sealing tongue plate being adapted to the water flow channel; the water sealing component drives the sealing tongue plate to move; an inductive element inside the water flow channel, the inductive element being connected to the water sealing component.

[0006] Furthermore, the water sealing assembly includes a guide post, a movable disc, a turntable, and a connecting rod; an electromagnet is provided on the guide post, and an annular iron block is provided near the electromagnet end of the movable disc, the electromagnet drives the movable disc to move through the annular iron block; the turntable and the movable disc are connected by a limiting assembly, a groove is provided on the sealing cavity, a spring is provided in the groove, the turntable abuts against the spring through the guide block, and the spring pushes the turntable to rotate through the guide block; one end of the connecting rod is hinged to the turntable, and the other end is hinged to the sealing tongue plate; a positioning shaft is connected to the bottom of the turntable.

[0007] Furthermore, the sealing assembly includes a first sealing strip and a second sealing strip, the first sealing strip being fixed on the movable disc and the second sealing strip being fixed on the turntable, the first sealing strip and the second sealing strip being adapted to each other.

[0008] Furthermore, the turntable includes a limiting part and a rotating part, which are connected by a guide post. The second sealing strip is fixed on the limiting part, and the guide block is fixed on the rotating part. The connecting rod is hinged between the rotating part and the limiting part.

[0009] Furthermore, the sealed cavity is provided with a guide rail, and the movable disk is provided with a ball seat, in which a ball is embedded, and the ball is adapted to the guide rail.

[0010] Furthermore, a warning sign is connected to the guide block, and a glass window is provided on the surface of the protective box. A spring drives the warning sign to the glass window.

[0011] Furthermore, the inductive element is connected to a conductive wire, which passes through the water flow channel and the outer wall of the protective box and is connected to the electromagnet; a rubber sleeve is fitted on the outer side of the portion of the conductive wire inside the water flow channel, and the two ends of the rubber sleeve are respectively glued to the inductive element and the inner wall of the water flow channel.

[0012] Furthermore, the inductor is composed of multiple hollow cylinders arranged in a ring array, the end of the inductor is hemispherical, and the inductor is made of copper-aluminum alloy.

[0013] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0014] This invention utilizes a conductive inductive element placed within the water flow channel to contact the water within the water heater body. When a leakage occurs in the water circuit, the inductive element conducts electricity through a conductive wire to an electromagnet. The electromagnet, under the influence of the current, generates a magnetic force, causing a ring-shaped iron block to move an upward-moving disc. This upward movement compresses a spring, which rapidly pushes a guide block along a groove, causing the disc to rotate and, through a connecting rod, pushes a sealing tongue plate. The sealing tongue plate then blocks the water flow channel, quickly closing the water circuit and preventing leakage current from entering the water heater body, thus protecting the user from electric shock. Furthermore, this device requires no external power source and can still be triggered when the water heater is disconnected from the power supply. Furthermore, it triggers quickly, effectively reducing the hazards caused by leakage. Upon triggering, the guide block rotates the warning sign to the glass window, allowing the user to clearly see that the water flow channel is closed and that there may be a leakage in the household water system. After eliminating the leakage, the positioning shaft can be rotated with a wrench or other tools to reset the turntable for future use. This device is reusable and can achieve a long service life through regular maintenance and inspection. Building upon existing leakage protection technology, it provides a good solution for water system leakage, improving the safety of users of this type of product and making it more widely applicable in older, dilapidated, and small-scale areas with potential electrical safety hazards. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an electric water heater with anti-electric shock function.

[0016] Figure 2 This is a schematic diagram of the internal structure of an electric water heater with anti-electric shock function.

[0017] Figure 3 This is a schematic diagram of the water sealing component.

[0018] Figure 4 This is a schematic diagram of the positioning axis.

[0019] Figure 5 This is a schematic diagram of a compression spring.

[0020] Figure 6 This is a schematic diagram of the spring extending.

[0021] Figure 7 This is a schematic diagram showing the connection between an inductive component and a conductive wire.

[0022] Figure 8 This is a schematic diagram of the limit component. Detailed Implementation

[0023] like Figure 1 and Figure 2As shown, an electric water heater with anti-electric shock function includes a water heater body 1. The bottom of the water heater body 1 has an inlet pipe 2 for water intake. A protective box 3 is mounted on the water heater body 1. The protective box 3 contains a water flow channel 4 and a sealing cavity 5, which are connected by a connecting channel 7. The water flow channel 4 is connected to the inlet pipe 2. A water sealing component 6 is located in the sealing cavity 5. A sealing tongue plate 8 is located in the connecting channel 7, and the sealing tongue plate 8 is adapted to the water flow channel 4. The water sealing component 6 drives the sealing tongue plate 8 to move. An inductive element 9 is located in the water flow channel 4 and is connected to the water sealing component 6. When a household appliance leaks electricity, causing the water entering the water heater to become electrified, the inductive element 9 will transfer the electricity to the water sealing component 6. The water sealing component 6 will then cause the sealing tongue plate 8 to move, blocking the water flow channel 4 and preventing water from entering the water heater body 1.

[0024] like Figures 3 to 6 As shown, the water sealing assembly 6 includes a guide post 11, a movable disc 12, a turntable 13, and a connecting rod 14. An electromagnet 15 is provided on the guide post 11, and an annular iron block 16 is provided near the end of the movable disc 12 close to the electromagnet 15. The electromagnet 15 drives the movable disc 12 to move through the annular iron block 16. The turntable 13 is connected to the movable disc 12 through a limiting assembly. A groove 17 is provided on the sealing cavity 5, and a spring 18 is provided in the groove 17. The turntable 13 abuts against the spring 18 through a guide block 19, and the spring 18 pushes the turntable 13 to rotate through the guide block 19. One end of the connecting rod 14 is hinged to the turntable 13, and the other end is hinged to the sealing tongue plate 8. The bottom of the turntable 13 is connected to a positioning shaft 21. The inductive element 9 transfers electricity to the electromagnet 15, giving it magnetic force. The electromagnet 15, through this magnetic force, causes the movable disk 12 with the annular iron block 16 to rise. The turntable 13, no longer restrained by the limiting components, allows the compressed spring 18 to extend along the groove 17 and provide power to the turntable 13. The turntable 13, via the connecting rod 14, pushes the sealing tongue plate 8, sealing the water flow channel 4 and preventing charged water from entering the water heater. The sealing tongue plate 8 is wrapped with a sealing sleeve, which increases the seal and prevents water from entering the water heater. A grounding plug is located at the upper end of the electromagnet 15. This grounding plug is inserted into the grounding sleeve to connect the electromagnet 15 to the ground wire, ensuring that the electromagnet 15 can be safely triggered in the event of a leakage.

[0025] like Figure 8 As shown, the sealing assembly includes a first sealing strip 22 and a second sealing strip 23. The first sealing strip 22 is fixed on the movable disk 12, and the second sealing strip 23 is fixed on the turntable 13. The first sealing strip 22 and the second sealing strip 23 are adapted to each other. The first sealing strip 22 and the second sealing strip 23 abut against each other to prevent the turntable 13 from rotating and to apply pressure to the spring 18, keeping the spring 18 in a compressed state.

[0026] like Figure 6As shown, the turntable 13 includes a limiting part 31 and a rotating part 32, which are connected by a guide post 11. The second sealing strip 23 is fixed on the limiting part 31, and the guide block 19 is fixed on the rotating part 32. The connecting rod 14 is hinged between the rotating part 32 and the limiting part 31. The limiting part 31 abuts against the movable disk 12 to prevent the turntable 13 from rotating. The connecting rod 14 is not concentric with the rotating part. When the rotating part rotates, the position of the connecting rod 14 will change accordingly, thereby achieving the purpose of pushing the sealing tongue plate 8 through the connecting rod 14.

[0027] like Figure 3 As shown, the sealed cavity 5 is equipped with a guide rail 33, and the movable disk 12 is equipped with a ball seat 34. The ball seat 34 is embedded with a ball 35, which is adapted to the guide rail 33. The cooperation between the ball 35 and the guide rail 33 allows the movable disk 12 to move smoothly up and down without easily deviating, and also reduces the contact friction between the movable disk 12 and other objects. This ensures that when the annular iron block 16 is subjected to electromagnetic influence, it can quickly drive the movable disk 12 to move upward and trigger the spring 18 to move.

[0028] like Figure 6 As shown, a warning sign 36 is connected to the guide block 19, and a glass window 37 is provided on the surface of the protective box 3. The spring 18 drives the warning sign 36 to the glass window 37. When the guide block 19 moves, it will move the warning sign 36 to the glass window 37. The user can observe the warning sign 36 through the glass window 37, thus knowing that the water flow channel 4 is closed, and thus judging that there is a possibility of leakage in the household water system.

[0029] like Figure 7 As shown, the inductive element 9 is connected to a conductive wire 38, which passes through the water flow channel 4 and the outer wall of the protective box 3 and connects to the electromagnet 15. A rubber sleeve is fitted around the portion of the conductive wire 38 inside the water flow channel 4, and the two ends of the rubber sleeve are glued to the inductive element 9 and the inner wall of the water flow channel 4, respectively. The inductive element 9 is composed of multiple hollow cylinders arranged in a ring array, with hemispherical ends, and is made of copper-aluminum alloy.

[0030] Working principle: During use, the spring 18 is kept in a compressed state, while the movable plate 12 and the rotating plate 13 are in contact with each other. When in use, water will enter the water heater body 1 through the household water circuit, water flow channel 4, and water inlet pipe 2 for heating. If there is a leakage in the household water circuit and it becomes conductive, the inductive element 9 will come into contact with the water and conduct the leakage current to the electromagnet 15 through the conductive wire 38 and the resistor. After receiving electrical energy, the electromagnet 15 will generate magnetic force and apply magnetic attraction to the annular iron block 16. The annular iron block 16 will be forced to move the movable plate 12 upward along the guide post 11. When the movable plate 12 and the rotating plate 13 are no longer in contact and limited, the rotating plate 13 can rotate. Then, the spring 18, which is in a compressed state, will quickly release the energy. The guide block 19 is pushed along the groove 17 and rotated, causing the turntable 13 to push the connecting rod 14 to the right. The connecting rod 14 moves the sealing tongue plate 8 and its surface sealing sleeve along the connecting channel 7 to the far right, thereby closing the water flow channel 4 and preventing water flow. This prevents leakage from being conducted into the water heater body 1, thus preventing the user from being harmed by leakage when using the water in the water heater body 1. When the guide block 19 moves, it will move the warning sign 36 to the glass window 37. The user can see the warning sign 36 through the glass window 37, so that they know that the water flow channel 4 is closed and that there is a possibility of leakage in the household water system.

[0031] Once the leakage problem is eliminated and resolved, the device can be reset. When the electromagnet 15 is no longer affected by electricity, the magnetic force it generates disappears, and the movable disc 12 will naturally fall onto the turntable 13 due to gravity. By using tools such as pliers or a wrench to rotate the positioning shaft 21, the positioning shaft 21 drives the turntable 13 to rotate, resetting the turntable 13. This causes the guide block 19 to compress and store the spring 18 again, and the rotation of the turntable 13 pulls the sealing sleeve to reset via the connecting rod 14, opening the water flow channel 4. The movable disc 12 is then placed against the turntable 13 for limiting its movement, preventing the turntable 13 from rotating again.

[0032] Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. An electric water heater with anti-electric shock function, comprising a water heater body, wherein a water inlet pipe for water inlet is provided at the bottom end of the water heater body, characterized in that, The system includes a protective box, which is installed on the water heater body. The protective box contains a water flow channel and a sealing cavity, which are connected by a connecting channel. The water flow channel is connected to the water inlet pipe. The sealing cavity contains a water sealing component, and the connecting channel contains a sealing tongue plate that is adapted to the water flow channel. The water sealing component drives the sealing tongue plate to move. The water flow channel contains an inductive element, which is connected to the water sealing component. The water-sealing assembly includes a guide post, a movable disc, a turntable, and a connecting rod. An electromagnet is mounted on the guide post, and an annular iron block is located near the electromagnet on the movable disc. The electromagnet drives the movable disc to move via the annular iron block. The turntable and the movable disc are connected by a limiting assembly. A groove is provided on the sealing cavity, and a spring is located within the groove. The turntable abuts against the spring via a guide block, and the spring pushes the turntable to rotate via the guide block. One end of the connecting rod is hinged to the turntable, and the other end is hinged to the sealing tongue plate. A positioning shaft is connected to the bottom of the turntable. The sealing assembly includes a first sealing strip and a second sealing strip. The first sealing strip is fixed on the movable plate, and the second sealing strip is fixed on the turntable. The first sealing strip and the second sealing strip are adapted to each other. The turntable includes a limiting part and a rotating part, which are connected by a guide post. A second sealing strip is fixed on the limiting part, and a guide block is fixed on the rotating part. A connecting rod is hinged between the rotating part and the limiting part. The sealed cavity is equipped with a guide rail, and the movable plate is equipped with a ball seat. The ball seat is embedded with a ball, which is adapted to the guide rail.

2. An electric water heater with anti-electric shock function according to claim 1, characterized in that, The guide block is connected to a warning sign, and the surface of the protective box is provided with a glass window. A spring drives the warning sign to the glass window.

3. An electric water heater with anti-electric shock function according to claim 2, characterized in that, The inductive element is connected to a conductive wire, which passes through the water flow channel and the outer wall of the protective box and is connected to the electromagnet. The portion of the conductive wire inside the water flow channel is fitted with a rubber sleeve, and the two ends of the rubber sleeve are glued to the inductive element and the inner wall of the water flow channel, respectively.

4. An electric water heater with anti-electric shock function according to claim 1, characterized in that, The inductor is composed of multiple hollow cylinders arranged in a ring array, the end of the inductor is hemispherical, and the inductor is made of copper-aluminum alloy.

Images