Water leakage protection device and electric appliance

Abstract

The application relates to a water leakage protection device and an electric appliance. The water leakage protection device comprises a main shell, a water inlet channel and a water outlet channel which are in communication with each other, an expansion unit which is accommodated in the installation cavity, a water stop sealing assembly which is located in the installation cavity at one end and in the communication cavity at the other end, the water stop sealing assembly being capable of moving from a first position to a second position under the pushing of the expansion unit, an alarm unit which is installed outside the main shell, and a triggering unit which is located in the installation cavity at one end and is in transmission connection with the water stop sealing assembly at the other end. The water leakage protection device drives the water stop sealing assembly to move by using the expansion unit, does not need external power supply to realize the automatic water stop function, and realizes the automatic alarm function in the water leakage state.

Description

Technical Field

[0001] This application relates to the field of electrical equipment technology, and in particular to a water leakage protection device and electrical equipment. Background Technology

[0002] Water purifiers, which can filter out floating matter, heavy metals, bacteria, viruses, residual chlorine, sediment, rust, microorganisms and other substances from water, are widely used in people's production and daily life, effectively improving people's quality of life.

[0003] However, during the use of water purifiers, leaks can easily occur due to aging of connecting pipes, loosening of interfaces, or damage to the internal structure. This not only wastes water resources but may also damage the ground or even cause safety accidents. Utility Model Content

[0004] Therefore, it is necessary to provide a leakage protection device and electrical equipment to address the problem of water leakage during the use of water purifiers.

[0005] A leakage protection device, comprising:

[0006] The main housing has an installation cavity and a connecting cavity that are interconnected, and the main housing also has an inlet channel and an outlet channel that are interconnected through the connecting cavity;

[0007] An expansion unit capable of absorbing water and expanding is housed within the mounting cavity;

[0008] The water-stop sealing assembly has one end located in the mounting cavity and the other end located in the communicating cavity. The water-stop sealing assembly can move from a first position to a second position under the push of the expanding unit.

[0009] An alarm unit, installed outside the main housing, is used to issue alarm information; and

[0010] The triggering unit has one end located inside the mounting cavity and connected to the water-stop sealing assembly, and the other end extends out of the main housing;

[0011] When the water-stop sealing assembly is in the first position, the water inlet channel and the water outlet channel are connected to each other, and the triggering unit is away from the alarm unit; when the water-stop sealing assembly is in the second position, the water inlet channel and the water outlet channel are disconnected, and the triggering unit triggers the alarm unit.

[0012] In one embodiment, the expansion unit is an expandable sponge or a superabsorbent resin.

[0013] In one embodiment, the water-stop sealing assembly includes:

[0014] A valve support is housed within the mounting cavity and located on one side of the expansion unit; the valve support is movable under the push of the expansion unit.

[0015] The valve stem has one end located within the mounting cavity and connected to the valve support, and the other end located within the communicating cavity; and

[0016] The first sealing ring is fitted onto the end of the valve stem located inside the communicating cavity;

[0017] When the water-stop sealing assembly is in the second position, the first sealing ring closes the water inlet channel.

[0018] In one embodiment, when the water-stop sealing assembly is in the second position, the first sealing ring abuts against one end of the water inlet channel under the water inlet pressure.

[0019] In one embodiment, the water-stop sealing assembly further includes a second sealing ring, which is sleeved on the valve stem and located at one end of the communicating cavity that connects to the mounting cavity.

[0020] In one embodiment, the leakage protection device further includes a retaining member that abuts against the main housing and the water-stop sealing assembly along the moving direction of the water-stop sealing assembly. The retaining member is used to apply a force to the water-stop sealing assembly from the second position to the first position.

[0021] In one embodiment, the alarm unit includes a trigger switch, which contacts and abuts the trigger switch to trigger the alarm unit when the water-stop sealing assembly is in the second position.

[0022] In one embodiment, the alarm unit includes a buzzer and a power supply component, the power supply component being electrically connected to the buzzer to supply power to the buzzer.

[0023] An electrical device includes the aforementioned water leakage protection device, and the electrical device further includes a main unit, the water inlet of which is connected to the water inlet channel of the water leakage protection device via a pipe.

[0024] In one embodiment, the electrical device is a water purifier.

[0025] The aforementioned leakage protection device utilizes an expansion unit to drive the water-stop sealing assembly to move, achieving automatic water-stopping functionality without external power supply. This eliminates the problem of failure after a power outage and offers high safety and applicability. Furthermore, by having a trigger unit move synchronously with the water-stop sealing assembly to trigger the alarm unit, an automatic alarm function is implemented in the event of a leak, allowing users to promptly detect and address leakage problems. Attached Figure Description

[0026] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of an electrical device according to an embodiment of this application.

[0029] Figure 2 This is a top view of a water leakage protection device according to an embodiment of this application.

[0030] Figure 3 for Figure 2 The leak protection device shown is a cross-sectional view along line AA when the expansion unit is not expanded.

[0031] Figure 4 for Figure 2 The leak protection device shown is a cross-sectional view along line AA after the expansion unit has expanded.

[0032] Figure 5 This is a front view of a water leakage protection device according to an embodiment of this application.

[0033] Figure 6 for Figure 5 The leak protection device shown is a sectional view along line BB when the expansion unit is not expanded.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1000 Electrical equipment; 100 Main unit; 200 Leakage protection device; 210 Main housing; 212 Base; 212a Mounting cavity; 214 Outer shell; 2141 Body; 2141a Communicating cavity; 2143 Inlet connector; 2134a Inlet channel; 2145 Outlet connector; 2145a Outlet channel; 246 Attachment; 220 Expansion unit; 230 Base support; 240 Water-stop sealing assembly; 241 Valve support; 243 Valve stem; 245 First sealing ring; 217 Second sealing ring; 250 Alarm unit; 251 Trigger switch; 260 Trigger unit; 270 Supporting component. Detailed Implementation

[0036] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0037] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0038] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0040] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0041] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0042] See Figure 1 An embodiment of this application provides an electrical device 1000, including a main unit 100 and a water leakage protection device 200. The main unit 100 and the water leakage protection device 200 are installed on the same mounting surface (e.g., the ground), and the water leakage protection device 200 is connected between an external water source and the water inlet of the main unit 100 through a pipe. Water supplied by the external water source flows into the main unit 100 through the water leakage protection device 200.

[0043] The following description uses an electrical appliance 1000 as an example of a water purifier to illustrate the structure of the leakage protection device 200 in this application. This embodiment is only used as an example and does not limit the technical scope of this application. It is understood that in other embodiments, the electrical appliance 1000 may also be other equipment that is installed and connected to the leakage protection device 200, which is not limited here.

[0044] As described in the background section, existing water purifiers typically lack automatic shut-off functions, making them prone to leaks after prolonged use. While some water purifiers are equipped with leak detection alarms, these devices rely on external power supplies, making them susceptible to failure after a power outage. Furthermore, they only provide an alarm and cannot prevent further water leakage.

[0045] To resolve the above issues, please refer to Figures 2 to 6 The water leakage protection device 200 of this application includes a main housing 210, an expansion unit 220, a water-stop sealing unit, an alarm unit 250, and a triggering unit 260.

[0046] The main housing 210 has an installation cavity 212a and a connecting cavity 2141a that are interconnected. The main housing 210 also has an inlet channel 2134a and an outlet channel 2145a that are interconnected through the connecting cavity 2141a. The inlet channel 2134a can be connected to the outlet of an external water source through a pipe, and the outlet channel 2145a can be connected to the inlet of the host 100 through a pipe. Therefore, the water flowing out of the external water source flows through the inlet channel 2134a, the connecting cavity 2141a and the outlet channel 2145a in sequence and enters the host 100.

[0047] like Figure 3 , Figure 4 As shown, the expansion unit 220 is housed within the mounting cavity 212a. When water from the main unit 100 leaks onto the ground, the expansion unit 220 absorbs the water and expands. One end of the water-stop sealing assembly 240 is located within the mounting cavity 212a, and the other end is located within the communicating cavity 2141a. The water-stop sealing assembly 240 can move from a first position to a second position under the push of the expanded expansion unit 220.

[0048] like Figure 6 As shown, the alarm unit 250 is installed outside the main housing 210. The alarm unit 250 is used to issue alarm information, which includes at least one of sound and light. One end of the trigger unit 260 is located in the mounting cavity 212a and is drively connected to the water-stop sealing assembly 240, while the other end extends out of the main housing 210 to cooperate with the alarm unit 250.

[0049] Please see Figure 3 , Figure 6 When the water-stop sealing assembly 240 is in the first position, the water inlet channel 2134a and the water outlet channel 2145a are interconnected through the connecting cavity 2141a, and the trigger unit 260 is moved away from the alarm unit 250. Please refer to Figure 4 , Figure 6When the water-stop sealing assembly 240 is in the second position, the water-stop sealing assembly 240 can close the inlet of the water outlet channel 2145a to disconnect the water inlet channel 2134a from the water outlet channel 2145a. At the same time, it drives the triggering unit 260 to trigger the alarm unit 250, and the alarm unit 250 can issue an alarm message to notify the user.

[0050] Thus, when the main unit 100 does not leak, the water-stop sealing assembly 240 is always in the first position, the water inlet channel 2134a and the water outlet channel 2145a are connected to each other through the connecting cavity 2141a, and the water flowing out from the external water source enters the main unit 100 in sequence through the water inlet channel 2134a, the connecting cavity 2141a and the water outlet channel 2145a.

[0051] When water leaks from the main unit 100 onto the ground, the expansion unit 220 absorbs the water and expands, thereby pushing the water-stop sealing assembly 240 from the first position to the second position. The inlet of the water outlet channel 2145a is sealed by the water-stop sealing assembly 240, thus disconnecting the water inlet channel 2134a from the water outlet channel 2145a. Therefore, water flowing from the external water source cannot continue to enter the main unit 100 through the leakage protection device 200, thereby stopping the leakage of the main unit 100. At the same time, the triggering unit 260 triggers the alarm unit 250 to issue an alarm message. The user can promptly obtain the leakage status of the main unit 100 based on the alarm message and carry out timely maintenance.

[0052] The aforementioned leakage protection device 200 utilizes the expansion unit 220 to drive the water-stop sealing assembly 240 to move, achieving automatic water-stopping function without external power supply. This eliminates the problem of failure after power outages and provides high safety and applicability. Furthermore, the trigger unit 260 moves synchronously with the water-stop sealing assembly 240 to trigger the alarm unit 250, enabling automatic alarm function in the event of a leak. This allows users to promptly detect and address leakage problems.

[0053] Please continue reading. Figure 3 , Figure 4 The main housing 210 includes a base 212 and an outer shell 214, the base 212 and the outer shell 214 in a first direction (i.e. Figure 3 They are connected to each other in the Z direction. When the leakage protection device 200 is installed on the ground, the first direction is parallel to the vertical direction, and the outer casing 214 is installed above the base 212.

[0054] The base 212 has a hollow, rotating structure, and its central axis extends along a first direction. The base 212 includes a large end and a small end connected axially, with the outer diameter of the large end being larger than that of the small end. A mounting attachment 246 is provided on the end face of the large end of the base 212 away from the small end, allowing the base 212 to be fixed to the ground via the mounting attachment 246. A mounting cavity 212a is formed within the base 212, connecting the opposite end faces of the base 212 in the first direction.

[0055] Specifically, in some embodiments, the attachment 246 is double-sided adhesive. It is understood that the fixing method of the base 212 is not limited to this; it can be configured as needed to meet different fixing requirements. In other embodiments, the base 212 can also be fixed by screws, fasteners, magnets, or other components, which are not limited here.

[0056] The outer shell 214 has a hollow shell structure, including an integrally formed body 2141, a water inlet connector 2143, and a water outlet connector 2145. The body 2141 is generally a hollow rotating body structure, with its central axis extending along a first direction. One axial end of the body 2141 is fitted onto the small end of the base 212 along the first direction. A communicating cavity 2141a is formed inside the body 2141, which is located above and communicates with the mounting cavity 212a in the first direction.

[0057] A water outlet connector 2145 is connected to the other axial end of the body 2141 away from the base 212 in a first direction. A water outlet channel 2145a extending in the first direction is formed inside the water outlet connector 2145, and the water inlet of the water outlet channel 2145a communicates with the connecting cavity 2141a. A water inlet connector 2143 is connected to the side wall of the body 2141 and is located between the base 212 and the water outlet connector 2145 in the first direction. A water inlet channel 2134a extending in the radial direction of the body 2141 is formed inside the water inlet connector 2143, and the water outlet of the water inlet channel 2134a communicates with the connecting cavity 2141a.

[0058] In some embodiments, the outlet connector 2145 and the inlet connector 2143 are quick-connect connectors that can be quickly connected to the pipeline, thereby improving the ease of installation of the leakage protection device 200.

[0059] The expansion unit 220 has a cubic structure and is housed in the mounting cavity 212a of the base 212 at the end away from the outer shell 214. The expansion unit 220 can absorb water on the ground and expand to increase its thickness in the first direction, thereby pushing the water-stop sealing assembly 240 to move in the first direction.

[0060] The expansion unit 220 can be an expanding sponge or a superabsorbent resin. The expansion unit 220 has a water expansion rate greater than 200% and can complete expansion within 2-5 seconds, thus exhibiting a fast response speed and immediately cutting off the water supply after a leak in the main unit 100. Specifically, in some embodiments, the expanding sponge can be a polyvinyl alcohol (PVA) sponge or a polyurethane sponge, and the superabsorbent resin can be cross-linked sodium polyacrylate. It is understood that the material forming the expansion unit 220 is not limited and can be configured as needed to meet different requirements.

[0061] In some embodiments, the water leakage protection device 200 further includes a base 230 with one open end. The base 230 is located within the end of the mounting cavity 212a away from the outer casing 214, with the open end of the base 230 facing the outer casing 214. The expansion unit 220 is at least partially housed in the base 230, and a communicating groove is provided at the bottom of the base 230, allowing water from the ground to enter the expansion unit 220 through the communicating groove. Thus, the base 230 can fix the expansion unit 220 and allows for the replacement of the expansion unit 220.

[0062] Please continue reading. Figure 3 , Figure 4 In some embodiments, the water-stop sealing assembly 240 includes a valve support 241, a valve stem 243, a first sealing ring 245, and a second sealing ring 217.

[0063] Valve support 241 is housed in mounting cavity 212a and is located above expansion unit 220 in a first direction. One end face of valve support 241 can abut against expansion unit 220. Valve support 241 can move in the first direction under the push of expansion unit 220.

[0064] The valve stem 243 is a rod-shaped structure extending along a first direction. One end of the valve stem 243 is located in the mounting cavity 212a and inserted into the valve support 241 for connection with the valve support 241. The other end of the valve stem 243 is located in the communicating cavity 2141a. Two limiting portions are provided at the end of the valve stem 243 located in the communicating cavity 2141a. The two limiting portions are spaced apart along the axial direction of the valve stem 243, and each limiting portion extends in a ring shape along the axial direction of the valve stem 243. A first sealing ring 245 is sleeved on the end of the valve stem 243 located in the communicating cavity 2141a and is positioned between the two limiting portions. A second sealing ring 217 is sleeved at the middle position of the valve stem 243 and is positioned on the side of the communicating cavity 2141a closest to the mounting cavity 212a.

[0065] Thus, when the water-stop sealing assembly 240 is in the first position, the first sealing ring 245 is located inside the connecting cavity 2141a and there is a gap between it and the inlet of the water outlet channel 2145a. Therefore, water in the water inlet channel 2134a can enter the water outlet channel 2145a through the connecting cavity 2141a. The second sealing ring 217 is held against the cavity wall of the connecting cavity 2141a by the water pressure inside the connecting cavity 2141a to prevent water in the connecting cavity 2141a from entering the mounting cavity 212a.

[0066] When the water-stop sealing assembly 240 is in the second position, the expansion unit 220 absorbs water and expands, causing the valve support 241 and valve stem 243 to move upward in the first direction, thereby causing the first sealing ring 245 to move upward in the first direction to close the water inlet of the water outlet. Therefore, the water in the water inlet channel 2134a cannot enter the water outlet channel 2145a.

[0067] Moreover, when the water-stop sealing assembly 240 is in the second position, the first sealing ring 245 can be held against one end of the water inlet channel 2134a under the action of the water inlet pressure. This not only improves the sealing effect on the water outlet channel 2145a, but also maintains a sealed state to prevent backflow after the expansion unit 220 fails.

[0068] In some embodiments, the leakage protection device 200 further includes a retaining member 270, which abuts against the main housing 210 and the water-stop sealing assembly 240 along the moving direction of the water-stop sealing assembly 240. The retaining member 270 is used to apply a force to the water-stop sealing assembly 240 from a second position to a first position, so that when the main unit 100 does not leak, the water-stop sealing assembly 240 is held in the first position to achieve normal water flow.

[0069] In one specific embodiment, the abutment 270 is a compression spring. The abutment 270 is sleeved on the valve stem 241, and the two ends of the abutment 270 abut against the body 2141 of the housing 214 and the valve support 241 respectively, thereby applying a force to the valve support 241 to move from the second position to the first position.

[0070] Please combine Figure 3 , Figure 4 as well as Figure 6 As shown, the trigger unit 260 has a rod-shaped structure extending along the first direction. One end of the trigger unit 260 is located in the mounting cavity 212a and is connected to the valve support 241 in a driving manner. The other end of the trigger unit 260 extends out of the body 2141 of the outer casing 214.

[0071] Alarm unit 250 is mounted on one side of housing 214 in the radial direction, and alarm unit 250 includes trigger switch 251. When the water-stop sealing assembly 240 is in the first position, the distance between trigger unit 260 and alarm unit 250 is at its maximum. When the water-stop sealing assembly 240 is in the second position, trigger unit 260 moves upward until it contacts and abuts trigger switch 251 to trigger alarm unit 250.

[0072] In some embodiments, the alarm unit 250 includes a buzzer and a power supply component. The power supply component is electrically connected to the buzzer to power the buzzer, which can emit an alarm sound to alert the user upon being triggered. In other embodiments, the alarm unit 250 may also include a light-emitting unit for emitting light to alert the user. In some embodiments, the power supply component is a button battery.

[0073] Since the alarm unit 250 integrates a power supply component for direct power supply, no external power supply is required, thereby improving the ease of use and reliability of the water leakage protection device 200.

[0074] The aforementioned leakage protection device 200, through the cooperation of the expansion unit 220 and the water-stop sealing component 240, can quickly stop water leakage by automatically expanding the expansion unit 220 to push the water-stop sealing component 240 to move when leakage is detected. At the same time, the trigger unit 260 triggers the alarm unit 250 to issue an alarm to remind the user to deal with the leakage fault in time. The overall structure is simple and reliable and does not require an external power supply. It has high practicality and safety, and achieves the effects of energy saving, environmental protection and automatic response to leakage conditions.

[0075] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A leakage protection device, characterized in that, include: The main housing (210) has an installation cavity (212a) and a communication cavity (2141a) that are interconnected. The main housing (210) also has an inlet channel (2134a) and an outlet channel (2145a) that are interconnected through the communication cavity (2141a). An expansion unit (220) capable of absorbing water and expanding is housed within the mounting cavity (212a); The water-stop sealing assembly (240) has one end located in the mounting cavity (212a) and the other end located in the communicating cavity (2141a). The water-stop sealing assembly (240) can move from a first position to a second position under the push of the expanding unit (220). An alarm unit (250) is installed outside the main housing (210), and the alarm unit (250) is used to issue alarm information; and The trigger unit (260) has one end located in the mounting cavity (212a) and is connected to the water-stop sealing assembly (240), and the other end extends out of the main housing (210). When the water-stop sealing assembly (240) is in the first position, the water inlet channel (2134a) and the water outlet channel (2145a) are connected to each other, and the triggering unit (260) is away from the alarm unit (250); when the water-stop sealing assembly (240) is in the second position, the water inlet channel (2134a) and the water outlet channel (2145a) are disconnected, and the triggering unit (260) triggers the alarm unit (250).

2. The leakage protection device according to claim 1, characterized in that, The expansion unit (220) is an expansion sponge or a superabsorbent resin.

3. The leakage protection device according to claim 1, characterized in that, The water-stop sealing assembly (240) includes: The valve support (241) is housed in the mounting cavity (212a) and located on one side of the expansion unit (220). The valve support (241) is movable under the push of the expansion unit (220). The valve stem (243) has one end located in the mounting cavity (212a) and connected to the valve support (241), and the other end located in the communicating cavity (2141a); and The first sealing ring (245) is sleeved on one end of the valve stem (243) located in the communicating cavity (2141a); When the water-stop sealing assembly (240) is in the second position, the first sealing ring (245) closes the water inlet channel (2134a).

4. The leakage protection device according to claim 3, characterized in that, When the water-stop sealing assembly (240) is in the second position, the first sealing ring (245) abuts against one end of the water inlet channel (2134a) under the water inlet pressure of the water inlet channel (2134a).

5. The leakage protection device according to claim 3, characterized in that, The water-stop sealing assembly (240) also includes a second sealing ring (217), which is sleeved on the valve stem (243) and located at one end of the connecting cavity (2141a) that connects to the installation cavity (212a).

6. The leakage protection device according to claim 1, characterized in that, The leakage protection device further includes a retaining member (270), which abuts against the main housing (210) and the water-stop sealing assembly (240) in the direction of movement of the water-stop sealing assembly (240), and the retaining member (270) is used to apply a force to the water-stop sealing assembly (240) from the second position to the first position.

7. The leakage protection device according to claim 1, characterized in that, The alarm unit (250) includes a trigger switch (251). When the water-stop sealing assembly (240) is in the second position, the trigger unit (260) contacts and abuts the trigger switch (251) to trigger the alarm unit (250).

8. The leakage protection device according to claim 1, characterized in that, The alarm unit (250) includes a buzzer and a power supply component, wherein the power supply component is electrically connected to the buzzer to supply power to the buzzer.

9. An electrical appliance, characterized in that, The electrical equipment includes a water leakage protection device as described in any one of claims 1 to 8, and further includes a main unit (100), the water inlet of which is connected to the water inlet channel (2134a) of the water leakage protection device via a pipe.

10. The electrical equipment according to claim 9, characterized in that, The electrical appliance is a water purifier.

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