Safety protector for water heater

Abstract

The utility model discloses a safety protector for a water heater. The safety protector comprises a magnetic water flow switch and a wireless socket, the magnetic water flow switch comprises a shell, a magnetic control reed switch, a floater and a magnet, a first cavity and a second cavity are formed in the shell, the first cavity is a water flow channel, a water inlet of the first cavity is communicated with an external water source, and a water outlet of the first cavity is communicated with a water inlet of the water heater; the magnetic control reed switch is fixed in the second chamber and close to the water outlet of the water flow channel; the floater is movably located in the water flow channel and moves in the water flow direction so as to be away from or close to the magnetic control reed pipe. The magnet is arranged in the floater and is in magnetic signal connection with the input end of the magnetic control reed pipe; the input end of the wireless socket is in signal connection with the output end of the magnetic control reed switch. The safety protector designed by the utility model is safe and reliable, can well protect the personal safety of a bather, and reduces electric leakage casualty accidents caused by electrified bathing.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, and more specifically to a safety protector for water heaters. Background Art

[0002] With the improvement of living standards, storage electric water heaters have become an indispensable hot water equipment in homes and commercial places due to their convenience and practicality. However, although the existing storage electric water heaters are equipped with leakage protection technologies such as leakage switches, anti-electricity walls or isolation walls, there are still certain safety hazards in actual use:

[0003] 1) After a water heater has been used for a period of time, scale is likely to accumulate inside. This scale will not only affect the performance of the water heater, but may also corrode the internal electrical components, leading to leakage accidents. Leakage may not only damage the water heater itself, but may also cause electric shock injuries to the user, and even cause serious consequences such as fire.

[0004] 2) The full load power of storage electric water heaters on the market is generally between 2500W and 3500W, which means that the water heater needs a larger current when working at full load. However, the load current of the main core parts of the protectors currently sold on the market, the relays, is mostly between 220V10A and 16A, and due to differences in production standard loads, the actual power of many relays is significantly different from the nominal power. This means that these protectors may not be able to withstand the current of the water heater at full load for a long time, causing the protector to be damaged prematurely and lose its due protection function.

[0005] Therefore, how to provide a safe and reliable safety protector for a water heater that can well protect the personal safety of bathers and reduce the accidents of electric leakage caused by bathing with electricity is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0006] In view of this, the utility model provides a safety protector for a water heater, aiming to solve the above technical problems.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A safety protector for a water heater, comprising: a magnetic water flow switch and a wireless socket;

[0009] The magnetic water flow switch comprises a housing, a magnetically controlled reed switch, a float and a magnet. The housing has a first chamber and a second chamber inside. The first chamber is a water flow channel, whose water inlet is connected to an external water source, and whose water outlet is connected to a water inlet of a water heater. The magnetically controlled reed switch is fixed in the second chamber and close to the water outlet of the water flow channel. The float is movably located in the water flow channel and moves along the direction of the water flow to move away from or close to the magnetically controlled reed switch. The magnet is placed inside the float and is connected to the magnetic signal of the input end of the magnetically controlled reed switch.

[0010] The wireless socket is inserted into the mains socket, the plug of the water heater is inserted into the wireless socket, and the input end of the wireless socket is connected with the output end signal of the magnetic control reed switch.

[0011] Through the above technical scheme, the utility model provides a safety protector for a water heater. Through the arrangement of a magnetic water flow switch and a wireless socket, when water flows through the water flow channel, the water flow pushes the float and the magnet to move toward the water outlet of the water flow channel, and the magnetically controlled reed switch located on one side senses the magnetic field change of the magnet and converts it into an electrical signal to control the water heater to be powered off; when there is no water flow, the float and the magnet move toward the water inlet and away from the sensing position of the magnetically controlled reed switch, and the magnetically controlled reed switch converts it into an electrical signal to control the water heater to be powered on, and the electrical signal is transmitted in a manner of magnetic contact to separate water and electricity, so that water and electricity are separated, which not only avoids the corrosion of electrical components by scale, but also improves the stability and reliability of electrical signal transmission; when the user opens the water outlet of the water heater for use, cold water will automatically flow into the water inlet of the water heater and then enter the water tank of the water heater, and by arranging the magnetic water flow switch at the water inlet of the water heater, the cold water temperature at the water inlet is stable, which can prevent the magnetic force from being affected by the water temperature and causing the sensitivity performance to change, thereby ensuring the stability of the magnetic water flow switch.

[0012] Preferably, it also includes a reaction magnet that repels the magnet, and the reaction magnet is fixed on one side of the water flow channel near its water outlet. This structure can make the float and the magnet move toward the water inlet and away from the magnetic field sensing range of the magnetic control reed switch when there is no water flow.

[0013] Preferably, a retaining ring is further included, which is fixed at the water inlet of the water flow channel and has an inner diameter smaller than the outer diameter of the float. The arrangement of this structure can block the float and prevent it from leaving the water flow channel.

[0014] Preferably, the wireless socket includes an insulating shell, a circuit board and a relay. The insulating shell is provided with a socket, and the plug of the water heater is inserted into the socket; the circuit board and the relay are both placed in the inner cavity of the insulating shell, the power supply end of the circuit board is connected to the mains, and its input end is connected to the output end signal of the magnetron reed switch; the command input end of the relay is connected to the control end of the circuit board, and its command output end is electrically connected to the plug.

[0015] Furthermore, the relay is a high-current master control relay of the 240V30AT90 type with a full-standard load. Its contacts are made of high-indium material, which has a high-temperature resistance function, enhances the load current, reduces sparks generated during engagement, prevents fire, and effectively ensures that the water heater can work safely at full load and ensures the normal and safe use of the protector. It improves the safety of use and minimizes the occurrence of electric leakage casualties when taking a bath with electricity.

[0016] Preferably, an adapter is further included, wherein the adapter is electrically connected to the power supply terminal of the circuit board, and an output terminal thereof is electrically connected to the relay.

[0017] Furthermore, the adapter has a low voltage output of 9--12V. This means that the adapter can work stably within this voltage range and provide the required power to the relay.

[0018] Through the setting of this structure, the magnetic water flow switch can work normally under low voltage 9-12V, which meets the use pressure standard of household pipe tap water, making the protector less susceptible to voltage fluctuations and household appliance interference, further enhancing its safety performance.

[0019] The adapter has the ability to prevent overcurrent (i.e. excessive current). When the current in the circuit exceeds the set safety threshold, the adapter can automatically take measures, such as reducing the output voltage or sending a signal to the circuit board, which controls the relay to cut off the power to prevent equipment damage or fire and other safety accidents.

[0020] The adapter also has the function of preventing high temperature. When the temperature of the adapter or its surrounding environment exceeds the set safety temperature, the adapter will automatically take measures, such as reducing power or sending a signal to the circuit board, and the circuit board controls the relay to cut off power to avoid problems caused by overheating.

[0021] Preferably, it also includes a power-on indicator light connected to the circuit board, the power-on indicator light passes through the side wall of the insulating shell and is located outside the insulating shell. Through the arrangement of this structure, it can be clearly judged whether the water heater is in the heating state.

[0022] Preferably, a wireless module is also included, and the wireless module includes a wireless signal transmitter and a wireless signal receiver. The wireless signal transmitter is placed in the second chamber and is connected to the magnetically controlled reed switch signal; the wireless signal receiver is integrated on the circuit board and its input end is electrically connected to the wireless signal transmitter. Through the arrangement of this structure, wireless connection can be achieved, and the wireless socket can be set outside the bathroom to further achieve water and electricity separation and improve its safety performance.

[0023] Preferably, a temperature sensor is further included, the input end of the temperature sensor is electrically connected to the relay, and the output end of the temperature sensor is connected to the control end of the circuit board. When the temperature of the relay exceeds the standard, it sends a signal to the circuit board, and the circuit board controls the relay to cut off power.

[0024] Preferably, an overpressure sensor is also included, and the overpressure sensor includes a voltage sensor and a water pressure sensor. The input end of the voltage sensor is electrically connected to the adapter, and the output end thereof is wirelessly connected to the control end of the circuit board. The water pressure sensor is arranged in the water flow channel, and the output end thereof is signal-connected to the control end of the circuit board. When it is detected that the voltage and water pressure exceed the standard, the voltage sensor and the water pressure sensor will send a signal to the circuit board, and the circuit board control relay will be powered off.

[0025] Preferably, a current sensor is further included, the current sensor is connected in series between the relay and the plug of the water heater, and the output end of the current sensor is connected to the control end signal of the circuit board. When the current of the relay and the water heater exceeds the standard, the current sensor sends a signal to the circuit board, and the circuit board controls the relay to cut off the power.

[0026] Through the above technical solutions, it can be known that compared with the prior art, the utility model discloses a safety protector for a water heater. Compared with the prior art, the utility model uses the arrangement of a magnetic water flow switch and a wireless socket. When water flows through the water flow channel, the water flow pushes the float and the magnet to move toward the water outlet of the water flow channel. The magnetically controlled reed switch on one side senses the magnetic field change of the magnet and converts it into an electrical signal to control the water heater to power off. When there is no water flow, the float and the magnet move toward the water inlet away from the sensing position of the magnetically controlled reed switch. The magnetically controlled reed switch converts it into an electrical signal to control the water heater to power on. The electrical signal is transmitted in a touch manner, so that water and electricity are separated, which not only avoids the corrosion of electrical components by scale, but also improves the stability and reliability of electrical signal transmission; when the user opens the water outlet of the water heater for use, cold water will automatically enter the water inlet of the water heater and then enter the water tank of the water heater. By setting the magnetic water flow switch at the water inlet of the water heater, the cold water temperature at the water inlet is stable, which can prevent the magnetism from being affected by the water temperature and causing changes in sensitivity, thereby ensuring the stability of the magnetic water flow switch; the 9-12V low-voltage structure makes the protector less susceptible to voltage fluctuations and interference from household appliances, further enhancing its safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0028] Figure 1 The utility model is a structural schematic diagram of a safety protector for a water heater.

[0029] Figure 2 This is a diagram of the internal structure of the magnetic water flow switch provided by the utility model.

[0030] Figure 3 This is an exploded view of the wireless socket provided by the utility model.

[0031] Among them, 1 is a magnetic water flow switch; 11 is a shell; 12 is a water flow channel; 13 is a magnetically controlled reed switch; 14 is a float; 15 is a magnet; 16 is a retaining ring; 17 is a reaction magnet; 2 is a wireless socket; 21 is an insulating shell; 22 is a circuit board; 23 is an adapter; 24 is a relay; 3 is a water heater; 4 is a power-on indicator light; 5 is a wireless signal transmitter; 6 is a wireless signal receiver; 7 is a temperature sensor; 8 is a voltage sensor; 9 is a water pressure sensor; 10 is a current sensor. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See attached Figure 1-3 , the utility model embodiment discloses a safety protector for a water heater, comprising: a magnetic water flow switch 1 and a wireless socket 2;

[0034] The magnetic water flow switch 1 comprises a housing 11, a magnetically controlled reed switch 13, a float 14 and a magnet 15. The housing 11 has a first chamber and a second chamber inside. The first chamber is a water flow channel 12, whose water inlet is connected to an external water source, and whose water outlet is connected to a water inlet of a water heater 3; the magnetically controlled reed switch 13 is fixed in the second chamber and close to the water outlet of the water flow channel 12; the float 14 is movably located in the water flow channel 12 and moves along the water flow direction to move away from or close to the magnetically controlled reed switch 13; the magnet 15 is placed inside the float 14 and is connected to the magnetic signal of the input end of the magnetically controlled reed switch 13;

[0035] The wireless socket 2 is inserted into the mains socket, the plug of the water heater 3 is inserted into the wireless socket 2 , and the input end of the wireless socket 2 is signal-connected to the output end of the magnetron reed switch 13 .

[0036] Specifically, it also includes a reaction magnet 17 that repels the magnet 15 , and the reaction magnet 17 is fixed on one side of the water flow channel 12 close to the water outlet.

[0037] Specifically, a retaining ring 16 is further included. The retaining ring 16 is fixed at the water inlet of the water flow channel 12 and has an inner diameter smaller than the outer diameter of the float 14 .

[0038] Specifically, the wireless socket 2 includes an insulating shell 21, a circuit board 22 and a relay 24. The insulating shell 21 is provided with a socket, and the plug of the water heater 3 is inserted into the socket; the circuit board 22 and the relay 24 are both placed in the inner cavity of the insulating shell 21, the power supply end of the circuit board 22 is connected to the mains, and its input end is connected to the output end signal of the magnetron reed switch 13; the command input end of the relay 24 is connected to the control end of the circuit board 22, and its command output end is electrically connected to the plug.

[0039] Specifically, relay 24 can be a high-current master control relay of type 240V30AT90 with sufficient load capacity. Its contacts are made of high-indium material and have high-temperature resistance, which can enhance the load current, reduce sparks during engagement, prevent fire, and effectively ensure that the water heater can work safely at full load and ensure the normal and safe use of the protector.

[0040] Specifically, it also includes a power-on indicator light 4 connected to the circuit board 22 , and the power-on indicator light 4 passes through the side wall of the insulating housing 21 and is located outside the insulating housing 21 .

[0041] In some specific implementation examples, an adapter 23 is also included, and the adapter 23 is electrically connected to the power supply terminal of the circuit board 22, and its output terminal is electrically connected to the relay 24. Specifically, the adapter 23 has a low voltage output of 9-12V, can have the ability to prevent overcurrent (i.e., too large current), and can have the function of preventing high temperature.

[0042] In some other specific implementation examples, a wireless module is also included, which includes a wireless signal transmitter 5 and a wireless signal receiver 6. The wireless signal transmitter 5 is placed in the second chamber and is signal-connected to the magnetron reed switch 13; the wireless signal receiver 6 is integrated on the circuit board 22 and its input end is electrically connected to the wireless signal transmitter 5.

[0043] In some other specific implementation examples, a temperature sensor 7 is further included, the input end of the temperature sensor 7 is electrically connected to the relay 24 , and the output end of the temperature sensor 7 is connected to the control end of the circuit board 22 .

[0044] In some other specific implementation examples, an overpressure sensor is also included. The overpressure sensor includes a voltage sensor 8 and a water pressure sensor 9. The input end of the voltage sensor 8 is electrically connected to the adapter 23, and its output end is connected to the control end signal of the circuit board 22; the water pressure sensor 9 is arranged in the water flow channel 12 and its output end is connected to the control end signal of the circuit board 22.

[0045] In some other specific implementation examples, a current sensor 10 is further included. The current sensor 10 is connected in series between the relay 24 and the plug of the water heater 3 , and the output end of the current sensor 10 is signal-connected to the control end of the circuit board 22 .

[0046] According to the safety protector for water heaters designed by the utility model, through the arrangement of the magnetic water flow switch and the wireless socket, when water flows through the water flow channel, the water flow pushes the float and the magnet to move toward the water outlet of the water flow channel, and the magnetically controlled reed switch located on one side senses the magnetic field change of the magnet and converts it into an electrical signal to control the water heater to cut off the power; when there is no water flow, the float and the magnet move toward the water inlet and away from the sensing position of the magnetically controlled reed switch, and the magnetically controlled reed switch converts it into an electrical signal to control the water heater to be powered on, and the electrical signal is transmitted in a way of magnetic contact that separates water and electricity, so that water and electricity are separated. It not only avoids the corrosion of electrical components by scale, but also improves the stability and reliability of electrical signal transmission; when the user opens the water outlet of the water heater for use, cold water will automatically flow into the water inlet of the water heater and then enter the water tank of the water heater. By setting the magnetic water flow switch at the water inlet of the water heater, the cold water temperature at the water inlet is stable, which can prevent the magnetism from being affected by the water temperature and causing changes in sensitivity, thereby ensuring the stability of the magnetic water flow switch; the 9-12V low-voltage structure makes the protector less susceptible to voltage fluctuations and interference from household appliances, further enhancing its safety performance.

[0047] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0048] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A safety protector for a water heater, characterized in that: include: Magnetic water flow switch (1) and wireless socket (2); The magnetic water flow switch (1) comprises a housing (11), a magnetically controlled reed switch (13), a float (14) and a magnet (15); the housing (11) has a first chamber and a second chamber inside; the first chamber is a water flow channel (12), the water inlet of which is connected to an external water source, and the water outlet of which is connected to the water inlet of a water heater (3); the magnetically controlled reed switch (13) is fixed in the second chamber and close to the water outlet of the water flow channel (12); the float (14) is movably located in the water flow channel (12) and moves along the water flow direction to move away from or close to the magnetically controlled reed switch (13); the magnet (15) is placed inside the float (14) and is magnetically connected to the input end of the magnetically controlled reed switch (13); The input end of the wireless socket (2) is signal-connected to the output end of the magnetron reed switch (13).

2. A safety protector for a water heater according to claim 1, characterized in that: It also includes a reaction magnet (17) that repels the magnet (15), and the reaction magnet (17) is fixed on one side of the water flow channel (12) close to the water outlet.

3. A safety protector for a water heater according to claim 1, characterized in that: It also comprises a retaining ring (16), which is fixed at the water inlet of the water flow channel (12) and has an inner diameter smaller than the outer diameter of the float (14).

4. A safety protector for a water heater according to claim 1, characterized in that: The wireless socket (2) comprises an insulating shell (21), a circuit board (22) and a relay (24); the insulating shell (21) is provided with a socket, and the plug of the water heater (3) is inserted into the socket; the circuit board (22) and the relay (24) are both placed in the inner cavity of the insulating shell (21); the power supply end of the circuit board (22) is connected to the mains, and its input end is signal-connected to the output end of the magnetically controlled reed switch (13); the command input end of the relay (24) is connected to the control end of the circuit board (22), and its command output end is electrically connected to the plug.

5. A safety protector for a water heater according to claim 4, characterized in that: It also includes an adapter (23), wherein the adapter (23) is electrically connected to the power supply end of the circuit board (22), and an output end thereof is electrically connected to the relay (24).

6. A safety protector for a water heater according to claim 4, characterized in that: It also includes a power-on indicator light (4) connected to the circuit board (22), wherein the power-on indicator light (4) passes through the side wall of the insulating shell (21) and is located outside the insulating shell (21).

7. A safety protector for a water heater according to claim 4, characterized in that: It also includes a wireless module, which includes a wireless signal transmitter (5) and a wireless signal receiver (6). The wireless signal transmitter (5) is placed in the second chamber and is signal-connected to the magnetically controlled reed switch (13); the wireless signal receiver (6) is integrated on the circuit board (22) and its input end is electrically connected to the wireless signal transmitter (5).

8. A safety protector for a water heater according to claim 4, characterized in that: It also includes a temperature sensor (7), the input end of the temperature sensor (7) being electrically connected to the relay (24), and the output end of the temperature sensor (7) being connected to the control end of the circuit board (22).

9. A safety protector for a water heater according to claim 5, characterized in that: It also includes an overpressure sensor, which includes a voltage sensor (8) and a water pressure sensor (9), wherein the input end of the voltage sensor (8) is electrically connected to the adapter (23), and the output end thereof is signal-connected to the control end of the circuit board (22); the water pressure sensor (9) is arranged in the water flow channel (12) and the output end thereof is signal-connected to the control end of the circuit board (22).

10. A safety protector for a water heater according to claim 4, characterized in that: It also comprises a current sensor (10), the current sensor (10) being connected in series between the relay (24) and the plug of the water heater (3), and the output end of the current sensor (10) being signal-connected to the control end of the circuit board (22).

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