Full tank stop device

Abstract

The utility model discloses a full water self -stop equipment belongs to electrical control technical field, and includes: rectifier device has input and output, and the first switch spare is used for connecting input and power, and the output is equipped with the first branch, second branch and third branch of parallel connection, and the electric control valve is used for setting in the water inlet pipeline, and the electric control valve is located on the first branch, and the first normally open relay includes the first main circuit and the first control circuit, and the second normally closed relay includes the second main circuit and the second control circuit, and the first main circuit is parallelly connected with the first switch spare, and the first control circuit and the second main circuit are located on the second branch, and the second control circuit is located on the third branch, and the detection device is used for setting in the overflow pipeline, and the detection device is located on the third branch, and the detection device can be based on the water flow in the overflow pipeline and lead off the third branch, the utility model discloses simple structure, convenient installation, and the circuit does not need control element and can realize full water self -stop effect.

Description

Technical Field

[0001] This utility model belongs to the field of electrical control technology, and more specifically relates to a full-water automatic shut-off device. Background Technology

[0002] Most solar water heaters with automatic water filling function work by "detecting the water level in the storage tank and sending a signal to the control element, which then adjusts the opening and closing of the water filling valve according to the signal". However, there are still a large number of solar water heaters without automatic water filling function and older models that are still in use. These generally use manual water filling valves, and it is very difficult to add an additional control element, especially for users in multi-story buildings. They may need to add tens of meters of circuit to connect to the indoor unit, which will increase the installation cost and difficulty many times over.

[0003] Therefore, how to provide a convenient and easy-to-install automatic shut-off device when the water is full is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the present invention provides a device that automatically shuts off when the water is full, which can solve the problem of installation difficulties in related technologies.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A self-closing device when full of water, comprising:

[0007] A rectifier and a first switching element, the rectifier having an input terminal and an output terminal, the first switching element being used to connect the input terminal and a power supply, and the output terminal having a first branch, a second branch and a third branch connected in parallel;

[0008] An electrically controlled valve is used to be installed on the water supply pipeline, and the electrically controlled valve is installed on the first branch line;

[0009] A first normally open relay and a second normally closed relay, wherein the first normally open relay includes a first main circuit and a first control circuit, and the second normally closed relay includes a second main circuit and a second control circuit, wherein the first main circuit is connected in parallel with the first switching element, the first control circuit and the second main circuit are located on the second branch, and the second control circuit is located on the third branch;

[0010] A detection device is provided for installation on the overflow pipe. The detection device is located on the third branch and can be used to guide the third branch based on the water flow in the overflow pipe.

[0011] Optionally, the detection device includes a positive probe and a negative probe, one of which is connected to the second control loop and the other is connected to the output terminal. Both the positive probe and the negative probe are located at the outlet of the overflow pipe and are connected to the third branch based on the water flow.

[0012] Optionally, the positive probe and the negative probe are arranged side by side at the outlet of the overflow pipe.

[0013] Optionally, the distance between the positive electrode probe and the negative electrode probe is 3mm to 8mm.

[0014] Optionally, the automatic shut-off device when the water is full further includes a first indicator light and a first resistor, wherein the first indicator light and the first resistor are connected in series, one of which is connected to the live wire of the power supply and the other is connected to the neutral wire of the power supply.

[0015] Optionally, the automatic shut-off device when full of water further includes a second indicator light and a second resistor, wherein the second indicator light and the second resistor are connected in series, one of which is connected to the positive terminal of the output terminal and the other is connected to the negative terminal of the output terminal.

[0016] Optionally, the detection device is detachably mounted on the outside of the overflow pipe wall via a fixing member.

[0017] Optionally, the automatic shut-off device when full of water further includes a second switch, which is located on the second branch.

[0018] Optionally, the first switching element is a normally open switch, and the second switching element is a normally closed switch.

[0019] Optionally, the automatic shut-off device when full of water also includes a manual valve, which is located on the outlet side of the electrically controlled valve, and the electrically controlled valve and the manual valve form a dual-valve structure.

[0020] The above technical solution includes at least the following technical effects:

[0021] The electrically controlled valve opens when energized and closes when de-energized. A first switch connects the rectifier and power supply circuits. A first normally open relay controls the continuous energization of the rectifier and power supply. A second normally closed relay and a detection device work together to control the opening and closing of the first normally open relay. When water is being added, the first switch briefly closes, energizing the rectifier and power supply. The first normally open relay closes, continuously energizing the rectifier and opening the electrically controlled valve. When water overflows, the detection device conducts electricity through the water flow, causing the second normally closed relay to open and the first normally open relay to de-energize and release, de-energizing the rectifier and closing the electrically controlled valve. The entire circuit only requires connecting the corresponding components sequentially, resulting in a simple structure. It eliminates the need for control elements and signal-transmitting detection elements, leading to low cost. All installation steps can be completed indoors. Except for the electrically controlled valve and detection device, the remaining components can be integrated into any installation location as needed, making installation convenient. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of a full-water automatic shut-off device according to an embodiment of this utility model.

[0024] Figure 2 This is a schematic diagram of the installation of an electrically controlled valve for a fully filled automatic shut-off device according to an embodiment of this utility model.

[0025] Figure 3 This is a schematic diagram of the installation of a detection device for a fully filled automatic shut-off device in an embodiment of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Electrically controlled valve; 2. Detection device; 3. Rectifier; 4. First switch; 5. First normally open relay; 501. First main circuit; 502. First control circuit; 6. Second normally closed relay; 601. Second main circuit; 602. Second control circuit; 7. First indicator light; 8. Second indicator light; 9. First resistor; 10. Second resistor; 11. Second switch; 12. First branch; 13. Second branch; 14. Third branch; 15. Water supply pipe; 16. Overflow pipe; 17. Manual valve. Detailed Implementation

[0028] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] The terms "first," "second," etc., used in the specification and claims of this utility model are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this utility model can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, the first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0030] The automatic shut-off device for full water supply provided by the present invention will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0031] See appendix Figure 1-3 This utility model provides a full-water automatic shut-off device, comprising:

[0032] The rectifier 3 and the first switch 4 are provided. The rectifier 3 has an input terminal and an output terminal. The first switch 4 is used to connect the input terminal and the power supply. The output terminal is provided with a first branch 12, a second branch 13 and a third branch 14 connected in parallel.

[0033] Specifically, the rectifier 3 is used to convert AC power into DC power. The input terminal of the rectifier 3 is connected to a 220V AC mains power supply. After rectification by the rectifier 3, the output terminal outputs a 12V / 2A regulated DC power, thereby providing a stable output current for the entire circuit of the full-water automatic shutdown equipment.

[0034] By closing the first switch 4, the input terminal of the rectifier 3 is connected to the power supply, the rectifier 3 is energized, and the output terminal outputs current. Specifically, the first switch 4 is a normally open switch that can automatically disconnect when there is no external force. When the user actively starts the first switch 4, it can be briefly connected to provide a short-term closed circuit for the rectifier 3 and the power supply. Optionally, the first switch 4 is a normally open button.

[0035] Electrically controlled valve 1 is installed on the water supply pipeline 15 and on the first branch 12.

[0036] Specifically, the electrically controlled valve 1 is a solenoid valve. When current passes through, the electrically controlled valve 1 opens, and when no current passes through, the electrically controlled valve 1 closes.

[0037] The first normally open relay 5 and the second normally closed relay 6 are provided. The first normally open relay 5 includes a first main circuit 501 and a first control circuit 502. The second normally closed relay 6 includes a second main circuit 601 and a second control circuit 602. The first main circuit 501 is connected in parallel with the first switching element 4. The first control circuit 502 and the second main circuit 601 are located on the second branch 13. The second control circuit 602 is located on the third branch 14. Optionally, the first normally open relay 5 is a ZJ18FT-4PL DC electromagnetic 12V / 10A miniature intermediate relay, and the second normally closed relay 6 is a high / low level triggered miniature relay 12V / 10A.

[0038] The detection device 2 is installed in the overflow pipe 16 and on the third branch 14. The detection device 2 can conduct the third branch 14 based on the water flow in the overflow pipe 16. Specifically, the detection device 2 uses an electrode probe, which is inserted into the overflow pipe 16 or installed at the outlet of the overflow pipe 16, so that when water flows out of the overflow pipe 16, the positive and negative electrodes can be connected through the water flow, thereby energizing the third branch 14.

[0039] In use, the user actively activates the first switch 4, which closes, energizing the input of the rectifier 3 and the power supply. The second main circuit 601 remains normally closed, while the second branch 13 is energized. After energization, the 12V / 2A regulated DC current rectified by the rectifier 3 flows through the first control circuit 502, closing the first main circuit 501. At this time, the output current of the power supply can flow through the first switch 4 or the first main circuit 501 through the input of the rectifier 3 to form a complete circuit. When the user releases the first switch 4, it opens, but the first main circuit 501 remains closed. The power supply and the input of the rectifier 3 are then connected through the first main circuit 501. The energized rectifier 3 continuously releases 12V / 2A regulated DC current to the first control circuit 502, keeping the first main circuit 501 closed, thus achieving continuous circuit connectivity. The continuously energized rectifier 3 provides a stable 12V / 2A regulated DC current to the electrically controlled valve 1, causing the valve 1 to open.

[0040] When overflow occurs, water flows through the overflow pipe 16 and overflows. The detection device 2 conducts electricity through the water flow, and the third branch 14 is energized. Current flows through the second control circuit 602, causing the second main circuit 601 to disconnect and the second branch 13 to disconnect. The first control circuit 502 located on the second branch 13 will no longer carry current, and the first main circuit 501 will also open. The input terminal and power circuit of the rectifier 3 will be disconnected and no longer energized. At this time, the electrically controlled valve 1 is de-energized and closed, and the control circuit of the second normally closed relay 6 is also de-energized and no longer carries current, causing the second main circuit 601 to close. The entire equipment returns to its initial state, ready for the next use.

[0041] The entire circuit only requires connecting the corresponding components in sequence according to the circuit. The structure is simple and there is no need to set up control elements or detection elements to send signals. The cost is low and all installation steps can be completed indoors. Except for the electric control valve 1 and the detection device 2, the other components can be installed in any position according to the requirements, which is convenient for installation.

[0042] In this embodiment, specifically, the detection device 2 includes a positive probe and a negative probe. One of the positive probe and the negative probe is connected to the second control circuit 602, and the other is connected to the output terminal. Both the positive probe and the negative probe are located at the outlet of the overflow pipe 16 and are connected to the third branch 14 based on the water flow.

[0043] In this embodiment, specifically, the positive and negative probes are arranged side-by-side at the outlet of the overflow pipe 16. This side-by-side arrangement creates a stable detection area at the outlet of the overflow pipe 16, allowing the water flow to simultaneously contact both probes when overflow occurs, thus quickly establishing a conductive path. This layout effectively reduces detection delays or misjudgments caused by uneven water flow distribution, ensuring reliable continuity of the third branch 14 in the initial stage of overflow.

[0044] In this embodiment, the distance between the positive and negative probes is specifically 3mm to 8mm. This distance of 3mm to 8mm is to prevent water droplets from forming on the probes in a humid environment, causing a short circuit and triggering automatic power-off to close the electrically controlled valve 1. It also prevents uneven water flow from causing simultaneous contact between the positive and negative probes, resulting in detection delays or misjudgments, or to avoid excessive voltage drop and insufficient current due to excessive distance between the two probes, preventing the second normally closed relay 6 from activating after power-on.

[0045] In this embodiment, the automatic shut-off device for full water supply specifically includes a first indicator light 7 and a first resistor 9, which are connected in series. One indicator light 7 is connected to the live wire of the power supply, and the other is connected to the neutral wire. The first indicator light 7 remains constantly lit after the device is connected to an external power supply to indicate that the external power supply is normal and can supply power to the automatic shut-off device for full water supply. If the first indicator light 7 remains off after the device is connected to a power supply, it indicates that there is a problem with the connection between the external power supply and the automatic shut-off device for full water supply, requiring the user to check and repair it in time, thereby improving the safety of the automatic shut-off device for full water supply during use. Optionally, the first indicator light 7 is a light-emitting diode (LED), and the first resistor 9 is a 100 kΩ resistor. The 100 kΩ resistor reduces the voltage and limits the current of the LED to ensure that the current flowing through the first indicator light 7 is within a safe range.

[0046] In this embodiment, the automatic shut-off device for full water also includes a second indicator light 8 and a second resistor 10. The second indicator light 8 and the second resistor 10 are connected in series, with one connected to the positive terminal of the output and the other connected to the negative terminal of the output. The second indicator light 8 lights up after the rectifier 3 outputs a 12V / 2A regulated DC power, indicating that the circuit of the automatic shut-off device for full water is normally connected. This can be used as an indication that the electrically controlled valve 1 is open. After overflowing and causing the circuit to lose power, the second indicator light 8 goes out, indicating that the circuit of the automatic shut-off device for full water is disconnected. This can be used as an indication that the electrically controlled valve 1 is closed. If the second indicator light 8 does not light up after the first switch 4 is pressed to power on the automatic shut-off device for full water, the circuit of the device may have a problem and needs to be repaired in time to ensure safe use. Optionally, the second indicator light 8 is a light-emitting diode, and the second resistor 10 is a 250-ohm resistor used to reduce the voltage and limit the current of the second indicator light 8, ensuring that the current flowing through the second indicator light 8 is within a safe range.

[0047] In this embodiment, the detection device 2 is detachably mounted on the outside of the overflow pipe 16 via a fastener. Optionally, the fastener is a double cable tie, which secures the detection device 2 to the outside of the overflow pipe 16, providing stability while facilitating disassembly, maintenance, or replacement.

[0048] In this embodiment, the automatic shut-off device when full water level is reached also includes a second switch 11, which is located on the second branch 13 and is a normally closed switch. By setting the second switch 11, the user can actively control the circuit to disconnect from power. When no external force is applied, the normally closed second switch 11 will not affect the power-on / off state of the second branch 13. When the user actively activates the second switch 11, it disconnects, causing the second branch 13 to disconnect. The first control circuit 502 on the second branch 13 will no longer carry current, and the first main circuit 501 will also open. The input terminal and power circuit of the rectifier 3 will be disconnected and no longer energized. At this time, the electrically controlled valve 1 is de-energized and closed, and the control circuit of the second normally closed relay 6 also loses power, causing the second main circuit 601 to close, and the entire device returns to its initial state. Optionally, the second switch 11 is a normally closed button. Setting the second switch 11 allows the user to actively disconnect the circuit to stop the electrically controlled valve 1 from consuming power.

[0049] In this embodiment, the automatic shut-off device when full water level is reached also includes a manual valve 17. The manual valve 17 is located on the outlet side of the electrically controlled valve 1, and the electrically controlled valve 1 and the manual valve 17 form a dual-valve structure. Specifically, the electrically controlled valve 1 and the manual valve 17 are arranged sequentially along the water flow direction. The two valves form a dual-valve structure, which can play a sealing role when one of the valves fails, thus improving safety. Optionally, the manual valve 17 is the original manual water inlet valve.

[0050] In operation, the user first connects to the power supply, then activates the first switch 4 to power on the automatic shut-off device when full, thereby opening the electrically controlled valve 1. The user then opens the manual valve 17, opening the water supply pipe 15 to initiate the water supply process. After overflow, the detection device 2 connects to the third branch 14 via water flow, automatically de-energizing the automatic shut-off device when full, closing the electrically controlled valve 1, and stopping water supply. The user can then close the manual valve 17 at any time. Furthermore, the user can, as needed, activate the second switch 11 during the water supply process to disconnect the second branch 13, thereby automatically de-energizing the automatic shut-off device when full, closing the electrically controlled valve 1, and stopping its power consumption. Compared to the user's previous water supply operation, only the step of activating the first switch 4 needs to be added. The operation is closer to the user's previous habits, allowing the user to quickly become proficient in using the equipment.

[0051] Optionally, before washing up, after closing the manual valve 17, the first switch 4 is activated, and the electrically controlled valve 1 opens. At this time, the state of the water supply pipe 15 is the same as when the electrically controlled valve 1 is not installed, with only the manual valve 17 closed, which is convenient for the user and prevents the electrically controlled valve 1 from affecting the regulation of hot and cold water. After washing up, simply opening the manual valve 17 is sufficient to supply water.

[0052] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

Claims

1. A self-closing device when full of water, characterized in that, include: A rectifier (3) and a first switch (4) are provided. The rectifier (3) has an input terminal and an output terminal. The first switch (4) is used to connect the input terminal and the power supply. The output terminal is provided with a first branch (12), a second branch (13) and a third branch (14) connected in parallel. An electrically controlled valve (1) is installed on the water supply pipeline (15), and the electrically controlled valve (1) is installed on the first branch (12); The first normally open relay (5) and the second normally closed relay (6) are provided. The first normally open relay (5) includes a first main circuit (501) and a first control circuit (502). The second normally closed relay (6) includes a second main circuit (601) and a second control circuit (602). The first main circuit (501) is connected in parallel with the first switch (4). The first control circuit (502) and the second main circuit (601) are provided on the second branch (13). The second control circuit (602) is provided on the third branch (14). A detection device (2) is installed on the overflow pipe (16). The detection device (2) is installed on the third branch (14). The detection device (2) can guide the third branch (14) based on the water flow in the overflow pipe (16).

2. The automatic shut-off device for full-water operation according to claim 1, characterized in that, The detection device (2) includes a positive probe and a negative probe. One of the positive probe and the negative probe is connected to the second control circuit (602), and the other is connected to the output terminal. The positive probe and the negative probe are both located at the outlet of the overflow pipe (16) and are connected to the third branch (14) based on the water flow.

3. The automatic shut-off device for full water supply according to claim 2, characterized in that, The positive probe and the negative probe are arranged side by side at the outlet of the overflow pipe (16).

4. The automatic shut-off device for full water supply according to claim 3, characterized in that, The distance between the positive electrode probe and the negative electrode probe is 3mm to 8mm.

5. The automatic shut-off device for full-water operation according to claim 1, characterized in that, The automatic shut-off device when the water is full also includes a first indicator light (7) and a first resistor (9), and the first indicator light (7) and the first resistor (9) are connected in series, one of which is connected to the live wire of the power supply and the other is connected to the neutral wire of the power supply.

6. The automatic shut-off device for full water supply according to claim 1, characterized in that, The automatic shut-off device when the water is full also includes a second indicator light (8) and a second resistor (10). The second indicator light (8) and the second resistor (10) are connected in series, with one connected to the positive terminal of the output terminal and the other connected to the negative terminal of the output terminal.

7. The automatic shut-off device for full-water operation according to claim 1, characterized in that, The detection device (2) is detachably mounted on the outside of the overflow pipe (16) via a fastener.

8. The automatic shut-off device for full water supply according to claim 1, characterized in that, The automatic shut-off device when the water is full also includes a second switch (11), which is located on the second branch.

9. A full-water automatic shut-off device according to claim 8, characterized in that, The first switch (4) is a normally open switch, and the second switch (11) is a normally closed switch.

10. The automatic shut-off device for full water supply according to claim 1, characterized in that, The automatic shut-off device when full of water also includes a manual valve (17), which is located on the outlet side of the electrically controlled valve (1). The electrically controlled valve (1) and the manual valve (17) form a double valve structure.

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