Water leakage detection equipment and under-kitchen water purifier
By combining the signal detection module and the leakage detection module, the detector determines the leakage information and generates a detection signal, which solves the problem of false detection and false alarm of the expansion cotton leakage protector in high humidity environment, and achieves higher detection accuracy and user safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-17
- Publication Date
- 2026-03-31
Smart Images
Figure CN224066288U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of smart home technology, and in particular to a leak detection device and an under-sink water purifier. Background Technology
[0002] As living standards continue to improve, people are demanding higher and higher safety standards for electrical appliances, such as the accuracy of leak detection for household appliances.
[0003] Currently, the method for detecting leaks in household appliances involves installing an expansion cotton leak protector under the appliance. This protector is a device that uses the principle of expansion cotton absorbing water and expanding to cut off the water supply. When the appliance leaks, the expansion cotton absorbs moisture and expands rapidly, triggering a mechanical device to cut off the water inlet pipe, preventing further water leakage and achieving the purpose of preventing leaks and protecting electrical safety. However, in high-humidity environments, the expansion cotton is prone to becoming damp. Excessive expansion will trigger the mechanical device to cut off the water inlet pipe, leading to a higher probability of false leak detection and alarms, seriously affecting the user experience. Utility Model Content
[0004] This utility model provides a leak detection device and an under-sink water purifier, aiming to reduce the impact of environmental factors on leak detection, improve the accuracy of leak detection, thereby reducing the probability of false leak detection and false alarms, ensuring user safety while improving the user's water experience.
[0005] According to one aspect of the present invention, a water leakage detection device is provided, the device comprising: a signal detection module, a water leakage detection module and a processor, wherein the signal detection module includes a first detector and a second detector, and the water leakage detection module is connected to the processor, the first detector and the second detector respectively.
[0006] The leakage detection module is used to acquire leakage detection information of the device under test, and to generate a leakage detection signal in response to the leakage detection information, so that the processor can determine the leakage monitoring result of the device under test based on the leakage detection signal; wherein, the leakage detection information is determined using a first detector and a second detector.
[0007] According to another aspect of the present invention, an under-sink water purifier is provided, which includes: a water purification system and any one of the leakage detection devices of the present invention; the topless surface of the leakage detection device is fixedly connected to the equipment contact surface of the water purification system.
[0008] This utility model discloses a leak detection device comprising: a signal detection module, a leak detection module, and a processor. The signal detection module includes a first detector and a second detector. The leak detection module is connected to the processor, the first detector, and the second detector. The leak detection module acquires leak detection information from the device under test and generates a leak detection signal in response to the leak detection information, enabling the processor to determine the leak monitoring result of the device under test based on the leak detection signal. The leak detection information is determined using the first and second detectors. This utility model's leak detection device determines leak information through detectors and processes the information acquired by the detectors to obtain a signal used to determine whether the device under test has a leak fault. The leak detection device has extremely low environmental dependence, reducing the impact of environmental factors on leak detection work, improving the accuracy of leak detection work, and thus reducing the probability of false leak detection and false alarms, ensuring user safety while improving the user's water experience. It solves the problems of the expansion cotton in the expansion cotton leak protector being easily damp and expanding in high-humidity environments, which can trigger a mechanical device to cut off the water inlet pipe due to excessive expansion, resulting in a high probability of false leak detection and false alarms.
[0009] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description
[0010] To more clearly illustrate the technical solutions of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0011] Figure 1 This is a structural schematic diagram of a water leakage detection device provided by this utility model;
[0012] Figure 2 This is a schematic diagram of the structure of a signal detection module provided by this utility model;
[0013] Figure 3 This is a structural schematic diagram of a water leakage detection module provided by this utility model.
[0014] Figure label:
[0015] 101-Signal detection module, 1011-First detector, 1012-Second detector, 1013-Signal acquisition main body, 102-Leakage detection module, 1021-Signal input terminal, 1022-Signal output terminal, 1023-First connection terminal, 1024-Second connection terminal, 103-Processor, 104-Detection and protection module. Detailed Implementation
[0016] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.
[0017] It should be noted that the terms "first," "second," "initial," "intermediate," "target," "candidate," "alternate," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0018] Figure 1 This is a structural schematic diagram of a leak detection device provided by this utility model. This embodiment can be applied to accurately and with high quality detect leaks in household appliances and other devices that may have leaks. (Refer to...) Figure 1 The leakage detection device specifically includes: a signal detection module 101, a leakage detection module 102, and a processor 103. The signal detection module 101 includes a first detector 1011 and a second detector 1012. The leakage detection module 102 is connected to the processor 103, the first detector 1011, and the second detector 1012.
[0019] The processor generates a leak detection command for the device under test and sends the leak detection command to the leak detection module. The leak detection module, upon receiving the leak detection command, acquires the leak detection information of the device under test and generates a leak detection signal in response to the leak detection information, so that the processor determines the leak monitoring result of the device under test based on the leak detection signal. The leak detection information is determined using a first detector and a second detector.
[0020] In this context, the device to be detected can be understood as the target for leak detection, such as water-related household appliances (water dispensers, direct drinking water machines, water heaters, etc.) or items in the home that may leak (washbasins, water storage tanks, etc.). The processor can be understood as a module with data processing and instruction control capabilities, such as a microprocessor unit, a programmable logic controller, or the control unit of a household appliance. The leak detection instruction can be understood as the activation instruction for the leak detection device. This instruction can be generated in response to a user's detection command, or it can be generated periodically or quantitatively based on the user's water usage habits. Generally, the leak detection instruction is the power-on indication for the under-sink water purifier; as long as the under-sink water purifier is powered on, it indicates a need for use and will activate the leak detection function. This utility model does not limit this aspect. Leakage detection information indicates the leakage status of the device under test. When a leak occurs, the first and second detectors come into contact with the leaking water. Water is also a conductive medium in circuits and can be used to transmit information. The leakage detection information is the indicative information generated by the first and second detectors after the leakage water conducts through them. The leakage detection module can be understood as a circuit that processes the leakage detection information, assisting the processor in determining whether a leak exists in the device under test. After the first and second detectors conduct, some voltage or current information in the leakage detection module's circuit will change. As the amount of leaking water changes, the voltage or current information in the leakage detection module's circuit will also show different trends. The leakage detection information can be understood as the parameters in the leakage detection module that represent the characteristics of leakage detection, and the leakage monitoring result can be understood as the conclusion that the device under test is leaking.
[0021] Figure 2 This is a schematic diagram of the structure of a signal detection module provided by this utility model. Figure 2 As can be seen, the signal detection module 101 also includes a signal acquisition body 1013, which is a topless three-dimensional structure, such as a topless cube, a topless cylinder, or a topless triangular pyramid. Figure 2 The structure shown is an open-top cube.
[0022] Signal acquisition subject such as Figure 2The green structural component in the design has a supporting surface and a roofless surface positioned opposite each other (but not intersecting). The side of the supporting surface closest to the center of the roofless three-dimensional structure is the inner surface. The inner surface of the supporting surface is as follows: Figure 2 The yellow side in the middle, Figure 2 The supporting surface in the signal acquisition unit is a structural surface parallel to the topless surface. This design aims to reduce equipment production costs and complexity. Figure 2 The first and second detectors are deployed on the inner surface of the support surface of the signal acquisition body. The first and second detectors are located on opposite sides of the center line of the inner surface of the support surface, and the distances of the first and second detectors from the center point of the inner surface of the support surface are equal. The first detector includes at least two metal probes, and the second detector includes at least two metal probes.
[0023] from Figure 2 As can be seen, the first and second detectors are located on opposite sides of the inner surface of the support surface, and are equidistant from the center point of the inner surface. This arrangement provides a uniformly deployed detection structure. Leakage detection essentially involves measuring the resistance of water. The contact area between the metal probe and the water directly affects the resistance value to be detected. To improve detection accuracy, both the first and second detectors of this invention include at least two metal probes. This design increases the contact area between the leaking water and the detector, thereby enhancing the sensitivity of the leak detection. Specifically, the first and second detectors have opposite polarities: when the first detector is the positive probe, the second detector is the negative probe, and vice versa.
[0024] Furthermore, the leakage detection device of this utility model also includes a detection protection module 104. The detection protection module 104 is a groove deployed on the center line of the inner surface of the support surface. The groove is used to isolate the leakage detection surface where the first detector is located and the leakage detection surface where the second detector is located, increasing the "creep distance" and avoiding the problem of false leakage detection and false alarm caused by condensation water connecting the first detector and the second detector.
[0025] Figure 3 This is a schematic diagram of the structure of a water leakage detection module provided by this utility model. The detection principle is mainly to convert the information detected by the signal detection module into an electrical signal and send it to the processor by voltage division by resistor R5 and switching on and off by transistor N2. Figure 3 In this context, VCC represents the electrical signal, and GND represents the ground signal. Figure 3As can be seen from the diagram, the leakage detection module 102 includes: a signal input terminal 1021, a signal output terminal 1022, a first connection terminal 1023, a second connection terminal 1024, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a first capacitor C1, a second capacitor C2, a first transistor N1, and a second transistor N2.
[0026] The signal input terminal, signal output terminal, first connection terminal, and second connection terminal can be components with connection functions such as terminals and connecting wires. The signal input terminal is connected to the processor to receive the water leakage detection command sent by the processor; the signal output terminal is connected to the processor to send the water leakage detection signal to the processor; the first connection terminal is connected to the first detector, and the second connection terminal is connected to the second detector. When the first detector and the second detector are conducting based on water leakage, the third resistor R3 and the fourth resistor R4 are connected, and there is a resistance value between them due to water leakage.
[0027] Combination Figure 3 The first end of the first resistor is connected to the signal input terminal. The second end of the first resistor is connected to the first end of the second resistor and the second end of the first transistor. The second end of the second resistor is connected to the first end of the first transistor and the electrical signal. The third end of the first transistor is connected to the first end of the third resistor. The second end of the third resistor is connected to the first detector. The first end of the fourth resistor is connected to the second detector. The second end of the fourth resistor is connected to the first end of the first capacitor, the first end of the fifth resistor, and the second end of the second transistor. The second ends of the first capacitor, the fifth resistor, and the second transistor are all connected to ground. The first end of the second transistor is connected to the first end of the sixth resistor and the first end of the seventh resistor. The second end of the sixth resistor is connected to the electrical signal. The second end of the seventh resistor is connected to the first end of the second capacitor and the signal output terminal. The second end of the second capacitor is connected to ground.
[0028] The leak detection command is a low-level signal sent by the processor to turn on the first transistor, enabling the leak detection module to perform the leak detection task. When the first transistor is turned on, and the first and second detectors are connected based on the leak, the leak detection information is transmitted to the fourth resistor, so that the on / off state of the second terminal of the second transistor is adjusted by the voltage value at the second terminal of the fourth resistor.
[0029] When the first and second detectors come into contact with the leaking water, the third resistor, the resistor corresponding to the leak, the fourth resistor, and the fifth resistor will form a series voltage divider circuit. Under normal circumstances, the equivalent resistance of water is about 55-65KΩ. After the voltage is divided by the fifth resistor, if the voltage value at the second end of the fourth resistor is greater than or equal to 0.7V, the second transistor will conduct.
[0030] The signals output by the signal output terminal differ depending on whether the second transistor is conducting or not, and these different signals represent different leakage information. Specifically, when the second transistor is conducting, the signal output terminal outputs a first-type leakage detection signal, which is used to instruct the processor to determine that the device under test has a leakage fault. When the second transistor is not conducting, the signal output terminal outputs a second-type leakage detection signal, which is used to instruct the processor to determine that the device under test does not have a leakage fault.
[0031] Furthermore, if the processor receives a first-type leak detection signal, it determines that the device under test has a leak fault; if the processor receives a second-type leak detection signal, it determines that the device under test does not have a leak fault. The processor can also synchronize the detection results to the user so that the user can understand the leak detection status of their home. Secondly, if the processor determines that the device under test has a leak fault, it can control the corresponding household appliances to stop water use, or it can generate an alert message to remind the user to address the leak problem promptly and mitigate the damage caused by the leak.
[0032] The leak detection device described in the above embodiment determines leak information through a detector and processes the information acquired by the detector to obtain a signal used to determine whether the device under test has a leak fault. The leak detection device has extremely low dependence on the environment, reducing the impact of environmental factors on leak detection work, improving the accuracy of leak detection, and thus reducing the probability of false leak detection and false alarms. This ensures user safety while improving the user's water experience. It solves the problems of the expansion cotton in the expansion cotton leak protector being easily damp and expanding in high humidity environments. Excessive expansion will trigger the mechanical device to cut off the water inlet pipe, resulting in a high probability of false leak detection and false alarms.
[0033] This utility model also provides an under-sink water purifier, which can be used to accurately and efficiently detect leaks in appliances and other devices that may be leaking. The under-sink water purifier includes a water purification system and any one of the leak detection devices described in the above embodiments; the topless surface of the leak detection device is fixedly connected to the device contact surface of the water purification system.
[0034] A water purification system is a device in the home that purifies water. It can optimize the water quality in the tap water pipes and improve the quality of water used in the home.
[0035] The contact surfaces of the equipment include the bottom of the water purification system and the bottom surface of the environment where the water purification system is deployed. On one hand, the leak detection equipment can be installed at the bottom of the water purification system (the side closest to the ground). This is achieved by fixing the topless surface to the bottom of the water purification system (topless surface facing upwards, snapping it onto the system). This deployment method can be used to detect leaks in specific locations. On the other hand, the leak detection equipment can be installed on the bottom surface of the environment where the water purification system is deployed, such as the bottom surface of the cabinet where the water purification system is installed. This is achieved by fixing the topless surface to the bottom surface of the cabinet (topless surface facing downwards, snapping it onto the cabinet bottom). When the flowing water on the cabinet floor causes the first and second detectors to conduct, a leak is detected. This deployment method avoids the influence of condensation on the detection results.
[0036] The under-sink water purifier in the above embodiments includes any one of the leak detection devices described in the above embodiments. This under-sink water purifier is less affected by the environment and can accurately determine whether the device under test has a leak, improving user experience and water and electricity safety. It solves the problems of the expansion cotton in the expansion cotton leak protector being easily damp and expanding in high-humidity environments, which could trigger a mechanical device to cut off the water inlet pipe, resulting in a high probability of false leak detection and alarms. Furthermore, the under-sink water purifier provided in this embodiment includes the leak detection device described in the above embodiments and possesses the corresponding beneficial effects of the aforementioned leak detection device.
[0037] It should be understood that the various forms of the process shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this utility model can be achieved, and this is not limited herein.
[0038] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A leak detection device, characterized in that, The device comprises a signal detection module, a water leakage detection module and a processor, wherein the signal detection module comprises a first detector and a second detector, the water leakage detection module is connected to the processor, the first detector and the second detector respectively; The water leakage detection module is configured to acquire water leakage detection information of a device to be detected, and generate a water leakage detection signal in response to the water leakage detection information, so that the processor determines a water leakage monitoring result of the device to be detected based on the water leakage detection signal; wherein the water leakage detection information is determined by the first detector and the second detector. The signal detection module further comprises a signal acquisition main body, which is a three-dimensional structure without a top, and the first detector and the second detector are arranged on the inner surface of the support surface of the signal acquisition main body.
2. The water leak detection apparatus of claim 1, wherein The support surface does not intersect with the top surface of the signal acquisition main body, and one side of the support surface close to the center of the three-dimensional structure without a top is the inner surface.
3. The water leakage detection device according to claim 2, wherein The first detector and the second detector are respectively located on both sides of the center line of the inner surface of the support surface, and the distance between the first detector and the second detector and the center point of the inner surface of the support surface is equal. The first detector comprises at least two metal probes, and the second detector comprises at least two metal probes. Further comprising:
4. The water leak detection apparatus of claim 2, wherein A detection guarantee module, which is a groove arranged on the center line of the inner surface of the support surface, and is used to isolate the water leakage detection surface where the first detector is arranged and the water leakage detection surface where the second detector is arranged. The water leakage detection module comprises a signal input end, a signal output end, a first connection end and a second connection end; 5. The water leak detection apparatus of claim 1, wherein The signal input end is connected to the processor and is configured to receive a water leakage detection instruction sent by the processor; the signal output end is connected to the processor and is configured to send the water leakage detection signal to the processor; the first connection end is connected to the first detector, and the second connection end is connected to the second detector. The water leakage detection module further comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first capacitor, a second capacitor, a first triode and a second triode; 6. The water leak detection apparatus of claim 5, wherein The first end of the first resistor is connected to the signal input end, the second end of the first resistor is connected to the first end of the second resistor and the second end of the first triode respectively, the second end of the second resistor is connected to the first end of the first triode and the electrical signal respectively, the third end of the first triode is connected to the first end of the third resistor, and the second end of the third resistor is connected to the first detector; the first end of the fourth resistor is connected to the second detector, the second end of the fourth resistor is connected to the first end of the first capacitor, the first end of the fifth resistor and the second end of the second triode respectively, the second end of the first capacitor, the second end of the fifth resistor and the third end of the second triode are connected to the ground signal, the first end of the sixth resistor and the first end of the seventh resistor are connected to the first end of the second triode respectively, the second end of the sixth resistor is connected to the electrical signal, and the second end of the seventh resistor is connected to the first end of the second capacitor and the signal output end respectively, and the second end of the second capacitor is connected to the ground signal.
7. The water leak detection apparatus of claim 6, wherein The water leakage detection instruction is a low-level signal sent by the processor, which is used to turn on the first triode, so that the water leakage detection module performs a water leakage detection task.
8. The water leak detection apparatus of claim 7, wherein When the first triode is turned on and the first detector and the second detector are connected based on water leakage, the water leakage detection information is transmitted to the fourth resistor to adjust the on-off state of the second end of the second triode through the voltage value of the second end of the fourth resistor.
9. The water leakage detection device of claim 8, wherein, When the second triode is turned on, the signal output end outputs a first type of water leakage detection signal, and the first type of water leakage detection signal is used to instruct the processor to determine that the device to be detected has a water leakage fault; When the second triode is not turned on, the signal output end outputs a second type of water leakage detection signal, and the second type of water leakage detection signal is used to instruct the processor to determine that the device to be detected does not have a water leakage fault.
10. An under-the-counter water purifier, characterized by The water leakage detection device comprises: a water purification system and the water leakage detection device according to any one of claims 1 to 9; The top surface of the water leakage detection device is fixedly connected to the device contact surface of the water purification system.