Water level detection device for water tank and electrical equipment

Abstract

The utility model relates to a water tank water level detection device and electrical equipment. The water tank water level detection device comprises a water tank, a water level detection piece and a shielding piece. The water tank comprises a tank body with a containing cavity and a protruding part arranged on the outer side wall of the tank body. The water level detection piece is arranged on a mounting piece on one side of the box body; the shielding piece is rotationally connected to the mounting piece and located between the water level detection piece and the box body, the shielding piece has a shielding position and an opening position, and when the box body gets close to the mounting piece, the protruding part can push the shielding piece to rotate, and the shielding piece is switched to the opening position from the shielding position; at the shielding position, the shielding piece can shield the detection end of the water level detection piece; in the opening position, the detection end of the water level detection piece faces the water tank and can detect the water level of the water tank. According to the water tank water level detection device, the water state, the water-free state and the off-position state of the water tank can be distinguished through the water level detection piece and the shielding piece, so that the water level detection cost is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of water tank water level detection, and in particular, to a water tank water level detection device and electrical equipment. Background Art

[0002] Some electrical appliances are usually equipped with water tanks. For example, a refrigerator with an ice maker usually uses a photoelectric sensor to detect the water level in the water tank. However, when the water tank is not installed in place, the photoelectric sensor always reports that there is water in the water tank. In order to distinguish between the two states of the water tank containing water and being out of place, an additional Hall sensor is required to confirm the position of the water tank, which increases the detection cost. Utility Model Content

[0003] The purpose of the present disclosure is to provide a water tank water level detection device and electrical equipment. The water tank water level detection device, by arranging a shielding member between the water tank and the water level detection member that can be switched between a shielding position and an open position by rotation, can distinguish between the water tank's water-containing state, water-free state and out-of-position state by using the water level detection member, so as to reduce the water level detection cost.

[0004] In order to achieve the above object, according to a first aspect of the present disclosure, a water tank water level detection device is provided, comprising:

[0005] A water tank, comprising a box body having a containing cavity and a protrusion arranged on an outer side wall of the box body;

[0006] A water level detection member, a mounting member provided on one side of the box body; and

[0007] A shielding member is rotatably connected to the mounting member and is located between the water level detection member and the box body. The shielding member has a shielding position and an opening position. When the box body is close to the mounting member, the convex portion of the shielding member can push the shielding member to rotate, so as to switch the shielding member from the shielding position to the opening position.

[0008] In the shielding position, the shielding member can shield the detection end of the water level detection member; in the opening position, the detection end of the water level detection member faces the water tank and can detect the water level of the water tank.

[0009] Optionally, the shielding member includes a shielding portion and an operating portion connected to the side of the shielding portion; one end of the shielding portion is rotatably connected to the mounting member;

[0010] The protrusion corresponds to an end of the operating portion away from the shielding portion, and causes the shielding member to rotate by acting on the operating portion.

[0011] Optionally, the protrusion is formed with a first inclined surface, and in a direction away from the box body, the first inclined surface is inclined in a direction away from the shielding member; and / or

[0012] The operating portion is formed with a second inclined surface, and along a direction away from the shielding portion, the second inclined surface is inclined toward the mounting member.

[0013] Optionally, the shielding member further includes a balancing portion, and the balancing portion is located on a side of the shielding portion away from the operating portion.

[0014] Optionally, the balancing portion and the operating portion are symmetrically arranged on opposite sides of the shielding portion.

[0015] Optionally, a first mounting portion formed on the mounting member;

[0016] The shielding member forms a second mounting portion that is rotatably matched with the first mounting portion.

[0017] Optionally, the first mounting portion is configured as a cylindrical protrusion provided on the mounting member;

[0018] The second mounting portion is configured as a rotating hole, and the rotating hole is rotatably connected to the cylindrical protrusion.

[0019] Optionally, a limiting structure for limiting the position of the shielding member is formed at one end of the cylindrical protrusion away from the mounting member.

[0020] Optionally, the limiting structure is configured as a limiting portion radially extending from the outer side wall of the cylindrical protrusion;

[0021] Along the direction of the cylindrical protrusion, the limiting portion is formed with a guiding inclined surface for installing the shielding member.

[0022] According to a second aspect of the present disclosure, an electrical device is also provided, and the electrical device includes the above-mentioned water tank water level detection device.

[0023] Through the above technical solution, that is, the water level detection device of the water tank disclosed in the present invention, by setting a shielding member between the water tank and the water level detection member, and when the water tank is far away from the shielding member, the shielding member is in the shielding position, and when the water tank is close to the shielding member and abuts against the shielding member, the convex part of the outer wall of the water tank is used to push the shielding member to rotate so as to switch the shielding member from the shielding position to the open position. When the water tank is in the out-of-position state (that is, the water tank is far away from the shielding member), the water level detection member is blocked by the shielding member, and the water level detection member determines that the water tank is out of position; when the water tank is close to the shielding member, the shielding member is switched from the shielding position to the open position, at this time, the water level detection member can detect the water tank, including the water state and the waterless state. By setting a shielding member that can be switched between the shielding position and the open position by rotation between the water tank and the water level detection member, the water state, the waterless state and the out-of-position state of the water tank can be distinguished by the water level detection member, so as to reduce the water level detection cost.

[0024] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0026] Figure 1 It is a structural diagram of a water tank water level detection device provided in some embodiments of the present disclosure.

[0027] Figure 2 is a top view of a water tank water level detection device provided in some embodiments of the present disclosure.

[0028] Figure 3 It is a structural diagram of a water tank provided in some embodiments of the present disclosure.

[0029] Figure 4 It is a structural diagram of the connection between a shielding member, a water level detection member and a mounting plate provided in some embodiments of the present disclosure.

[0030] Figure 5 This is a structural diagram of a water tank water level detection device provided by some embodiments of the present disclosure, in which a shielding member is in a shielding position.

[0031] Figure 6 It is a structural diagram of a shielding member of a water tank water level detection device provided in some embodiments of the present disclosure in an open position.

[0032] Figure 7 It is a structural diagram of the mounting parts provided in some embodiments of the present disclosure.

[0033] Figure 8 is based on Figure 7 Enlarged view of part I in .

[0034] Fig. 9 is a structural diagram of a shielding member provided in some embodiments of the present disclosure.

[0035] Description of Reference Numerals

[0036] 100 - water tank; 110 - box body; 111 - receiving chamber; 120 - raised portion; 121 - first inclined surface;

[0037] 200-water level detection component;

[0038] 300-shielding member; 310-shielding portion; 311-rotating hole; 320-operating portion; 321-second inclined surface; 330-balancing portion;

[0039] 400 - mounting part; 410 - cylindrical protrusion; 411 - limiting part; 4111 - guiding inclined surface. DETAILED DESCRIPTION

[0040] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0041] In the present disclosure, unless otherwise specified, directional words such as "up, down, left, right" generally refer to up, down, left, right relative to the accompanying drawings; "inside and outside" refer to the inside and outside of the outline of the corresponding component; "far and near" refer to the corresponding structure or the corresponding component being far away from or close to another structure or component. In addition, the terms "first", "second", etc. used in the present disclosure are to distinguish one element from another and do not have order and importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same figure numbers in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate the present disclosure and should not be construed as limitations on the present disclosure.

[0042] For electrical equipment with a water tank, such as a refrigerator with an ice maker, the water level of the water tank is usually detected by a photoelectric sensor. The water state and the waterless state of the water tank, that is, when the water is not in the water state, the transmitting end of the photoelectric sensor will emit infrared light, and the infrared light will be reflected back at 90° inside the prism, and the receiving end of the photoelectric sensor can receive it; when there is water, the infrared light emitted by the transmitting end of the photoelectric sensor will penetrate the prism without reflection. However, when the water tank is not installed in place, the infrared light emitted by the transmitting end of the photoelectric sensor has no reflection and will also feedback that there is water in the water tank. Therefore, the sensing effect of the photoelectric sensor is the same when the water tank is in the water state and the out-of-position state. If the water tank is not installed in place, the photoelectric sensor will always feedback that there is water in the water tank, and the water level alarm function is lost. Therefore, it is necessary to add an additional Hall sensor + magnet solution to distinguish between the water state and the out-of-position state of the water tank, thereby increasing the manufacturing cost.

[0043] Based on the above problems, an embodiment of the present disclosure provides a water tank water level detection device and electrical equipment. The water tank water level detection device is provided with a shielding member 300 between a water tank 100 and a water level detection member 200, which can be switched between a shielding position and an open position by rotation. The water level detection member 200 can be used to distinguish between the water state, the water-free state and the out-of-position state of the water tank 100, so as to reduce the water level detection cost.

[0044] In order to achieve the above purpose, Figures 1 to 9 As shown, according to a first aspect of the present disclosure, a water tank water level detection device is provided, which includes a water tank 100, a water level detection member 200 and a shielding member 300. The water tank 100 includes a box body 110 with a accommodating cavity 111 and a protrusion 120 arranged on the outer wall of the box body 110; a water level detecting member 200, and a mounting member 400 arranged on one side of the box body 110; a shielding member 300 is rotatably connected to the mounting member 400, and is located between the water level detecting member 200 and the box body 110, and the shielding member 300 has a shielding position and an open position, and when the box body 110 is close to the mounting member 400, the protrusion 120 can push the shielding member 300 to rotate, and switch the shielding member 300 from the shielding position to the open position; in the shielding position, the shielding member 300 can shield the detecting end of the water level detecting member 200; in the open position, the detecting end of the water level detecting member 200 faces the water tank 100 and can detect the water level of the water tank 100.

[0045] Through the above technical solution, that is, the water tank water level detection device disclosed in the present invention, a shielding member 300 is set between the water tank 100 and the water level detection member 200, and when the water tank 100 is away from the shielding member 300, the shielding member 300 is in the shielding position, and when the water tank 100 is close to the shielding member 300 and abuts against the shielding member 300, the raised portion 120 on the outer wall of the water tank 100 is used to push the shielding member 300 to rotate, thereby switching the shielding member 300 from the shielding position to the open position. When the water tank 100 is in the out-of-position state (i.e., the water tank 100 is away from the shielding member 300), the water level detection member 200 is shielded by the shielding member 300, and the water level detection member 200 determines that the water tank 100 is out of position; when the water tank 100 is close to the shielding member 300, the shielding member 300 switches from the shielding position to the open position, at which time the water level detection member 200 can detect the water tank 100, including the water state and the water-free state. By providing a shielding member 300 that can be switched between the shielding position and the open position by rotation between the water tank 100 and the water level detection member 200, the water state, the water-free state, and the out-of-position state of the water tank 100 can be distinguished by using the water level detection member 200, so as to reduce the water level detection cost.

[0046] It should be noted that the water level detection element 200 includes but is not limited to a photoelectric sensor. The water level detection element 200 may also be other sensors that can meet the requirements of detecting water level.

[0047] The mounting member 400 may be a side wall of the water tank 100 mounting station of an electrical device in the application scenario of the water tank 100, for example, an electrical device with a removable water tank 100 such as a refrigerator with an ice maker, a water dispenser or a humidifier, or may be another mounting member 400 disposed on one side of the mounting position of the water tank 100. The water level detection member 200 may be fixedly mounted on the mounting member 400 and arranged toward the water tank 100.

[0048] The shielding member 300 can switch between the shielding position and the open position by rotating, that is, the shielding member 300 can be rotatably connected to the mounting member 400 on one side of the water tank 100. When the water tank 100 is in an out-of-position state, the shielding member 300 is in the shielding position, which can block the transmitting end of the photoelectric sensor, or the prism corresponding to the photoelectric sensor, so that the receiving end cannot receive the reflected red light; when the water tank 100 is close to the mounting member 400, the abutting portion on the side wall of the water tank 100 can push the shielding member 300 to rotate sideways a certain distance, switching the shielding position of the shielding member 300 to the open position, that is, exposing the photoelectric sensor and facing the direction of the water tank 100. The photoelectric sensor can detect the water level of the water tank 100, thereby judging the water state and the water-free state.

[0049] like Fig. 9As shown, in some embodiments, the shielding member 300 includes a shielding portion 310 and an operating portion 320 connected to the side of the shielding portion 310; one end of the shielding portion 310 is rotatably connected to the mounting member 400; the protrusion 120 corresponds to the end of the operating portion 320 away from the shielding portion 310, and acts on the operating portion 320 to rotate the shielding member 300. The shielding portion 310 of the shielding member 300 is used to shield and open the photoelectric sensor, that is, the shielding member 300 rotates so that the shielding portion 310 is between the water tank 100 and the photoelectric sensor (shielding position) or the shielding portion 310 is located on one side of the photoelectric sensor (opening position), and the shielding member 300 also includes an operating portion 320 connected to the shielding portion 310, and the operating portion 320 can cooperate with the protrusion 120 of the water tank 100, so that the protrusion 120 pushes the operating portion 320 to rotate, so as to switch from the shielding position to the opening position.

[0050] It should be noted that the shielding portion 310 and the operating portion 320 can be constructed in any suitable structure or shape to ensure that the photoelectric sensor can be shielded and that the shielding member 300 can be rotated in cooperation with the raised portion 120 of the water tank 100 .

[0051] like Figure 3 As shown, in some embodiments, the protrusion 120 is formed with a first inclined surface 121, and in the direction away from the box body 110, the first inclined surface 121 is inclined in the direction away from the shielding member 300; when the water tank 100 moves toward the mounting member 400, and the first inclined surface 121 of the protrusion 120 contacts one side of the shielding member 300, the first inclined surface 121 pushes the shielding member 300 to rotate to switch to the open position. Another advantage of such an arrangement is that, by providing a first inclined surface 121 on the raised portion 120, when the water tank 100 approaches the mounting member 400 and abuts against the shielding member 300, the shielding member 300 is driven to rotate, thereby switching the shielding member 300 from the shielding position to the open position, that is, when the water tank 100 moves toward the mounting member 400, the first inclined surface 121 of the raised portion 120 is converted into rotation of the shielding member 300; at the same time, when the water tank 100 moves away from the mounting member 400, the first inclined surface 121 of the raised portion 120 gradually disengages from the shielding member 300, and the shielding member 300 can rotate in the opposite direction under the action of gravity, and the shielding member 300 switches from the open position to the shielding position.

[0052] like Fig. 9As shown, in other embodiments, the operating portion 320 is formed with a second inclined surface 321, and the second inclined surface 321 is inclined toward the mounting member 400 in a direction away from the shielding portion 310. When the water tank 100 moves toward the mounting member 400, and the protrusion 120 contacts the second inclined surface 321 on the side of the shielding member 300, the protrusion 120 cooperates with the second inclined surface 321 to push the shielding member 300 to rotate to switch to the open position. When the water tank 100 moves away from the mounting member 400, the protrusion 120 gradually disengages from the second inclined surface 321 of the shielding member 300, and the shielding member 300 can also rotate in the opposite direction under the action of gravity, switching from the open position to the shielding position.

[0053] like Figure 2 , Figure 3 and Fig. 9 As shown, in some other embodiments, the protrusion 120 is formed with a first inclined surface 121, and in the direction away from the box body 110, the first inclined surface 121 is inclined in the direction away from the shielding member 300; at the same time, the operating portion 320 is formed with a second inclined surface 321, and in the direction away from the shielding portion 310, the second inclined surface 321 is inclined toward the mounting member 400. Among them, the first inclined surface 121 of the protrusion 120 corresponds to the second inclined surface 321 of the shielding member 300, and when the water tank 100 moves toward the mounting member 400, the first inclined surface 121 can gradually contact the second inclined surface 321 of the shielding member 300, so that the shielding member 300 rotates to one side to switch to the open position. Similarly, when the water tank 100 moves away from the mounting member 400, the first inclined surface 121 of the protrusion 120 gradually disengages from the second inclined surface 321 of the shielding member 300, and the shielding member 300 can also rotate in the opposite direction under the action of gravity, switching from the open position to the shielding position.

[0054] Considering that the shielding portion 310 needs to maintain left-right balance, the shielding portion 310 can extend in the vertical direction. Figure 5 and Fig. 9 As shown, the shielding member 300 may further include a balancing portion 330, which is located on the side of the shielding member 310 away from the operating portion 320. By arranging the balancing portion 330 on the other side of the shielding member 310 away from the operating portion 320, the center of gravity of the shielding member 300 is balanced. The balancing portion 330 and the operating portion 320 may have the same structure or different structural shapes, as long as the shielding member 310 of the shielding member 300 is balanced in the vertical direction.

[0055] In some embodiments, the balancing part 330 and the operating part 320 are symmetrically arranged on opposite sides of the shielding part 310. The upper end of the shielding member 300 is rotatably connected to the mounting member 400, the operating part 320 can be connected to one side of the upper end of the shielding member 310, and the balancing part 330 can be connected to the other side of the lower end of the shielding member 300, that is, the operating part 320 and the balancing part 330 are arranged axially symmetrically with respect to the shielding member 310. Such an arrangement can make the structures of the operating part 320 and the balancing part 330 completely the same, and no proprietary design is required, which is convenient for manufacturing. For example, the operating part 320 and the balancing part 330 can both be rod-shaped members or plate-shaped members.

[0056] In order to realize the rotational connection between the shielding member 300 and the mounting member 400, in some embodiments, a first mounting portion is formed on the mounting member 400; and a second mounting portion is formed on the shielding member 300 to rotate with the first mounting portion. The shielding member 300 can be rotationally connected to the mounting member 400 through the cooperation between the first mounting portion and the second mounting portion.

[0057] Among them, the first mounting portion and the second mounting portion can adopt any suitable structure to achieve rotational connection. In some embodiments, the first mounting portion is constructed as a cylindrical protrusion 410 provided on the mounting member 400; the second mounting portion is constructed as a rotating hole 311, and the rotating hole 311 is rotationally connected to the cylindrical protrusion 410. The cylindrical protrusion 410 and the rotating hole 311 are in a rotationally matched relationship, so that the shielding member 300 is rotationally connected to the mounting member 400. In addition, the first mounting portion can also be constructed as a rotating hole 311, and the second mounting portion can be constructed as a cylindrical protrusion 410, which can also meet the rotational connection of the two. It should be noted that the specific structure of the first mounting portion and the second mounting portion mentioned above is exemplary. In other embodiments, the first mounting portion and the second mounting portion can also be two rotating holes 311, and the rotational connection can be achieved by a rotating shaft passing therethrough.

[0058] In order to prevent the shielding member 300 from falling off from the cylindrical protrusion 410 of the mounting member 400, as shown in FIG. Figure 7 , Figure 8 and Fig. 9 As shown, in some embodiments, a limiting structure for limiting the position of the shielding member 300 is formed at one end of the cylindrical protrusion 410 away from the mounting member 400. The limiting structure is located at one end of the cylindrical protrusion 410 away from the mounting member 400, and is used to abut against the lateral edge of the rotating hole 311 of the shielding member 300, thereby preventing the shielding member 300 from slipping off the cylindrical protrusion 410.

[0059] The limiting structure can be constructed using any suitable structure, such as Figure 8As shown, in some embodiments, the limiting structure is a limiting portion 411 radially extending from the outer wall of the cylindrical protrusion 410; along the direction of the cylindrical protrusion 410, the limiting portion 411 is formed with a guiding inclined surface 4111 for installing the shielding member 300. The limiting portion 411 may be annular and arranged in the circumference of the cylindrical protrusion 410. Of course, the limiting portion 411 may also be a part of the circumference of the cylindrical protrusion 410, as long as it can play a limiting role.

[0060] It should be noted that in order to install the direction shielding member 300 on the columnar protrusion, a guide slope 4111 is formed on the limiting portion 411 to guide the installation of the rotating hole 311, so as to facilitate the rotating hole 311 of the shielding member 300 to pass over the limiting portion 411 and be installed on the columnar protrusion.

[0061] According to the second aspect of the present disclosure, an embodiment of the present disclosure further provides an electrical device, which includes the above-mentioned water tank water level detection device. Therefore, the electrical device also has all the advantages of the above-mentioned water tank 100 detection device, which will not be repeated here. It should be noted that the electrical device includes but is not limited to a refrigerator with an ice-making function, and can also be other electrical devices that have a water tank 100 and need to detect the water level of the water tank 100.

[0062] The water level detection device and electrical equipment of the water tank disclosed in the present invention are configured such that a shielding member 300 is arranged between the water tank 100 and the water level detection member 200. When the water tank 100 is in a dislocated state (i.e., the water tank 100 is away from the shielding member 300), the shielding member 300 is in a shielding position, the water level detection member 200 is shielded by the shielding member 300, and the water level detection member 200 determines that the water tank 100 is dislocated. When the water tank 100 is close to the shielding member 300 and abuts against the shielding member 300, the first inclined surface 121 of the raised portion 120 of the outer wall of the water tank 100 cooperates with the second inclined surface 321 of the shielding member 300, and the shielding member 300 is pushed to rotate so as to switch the shielding member 300 from the shielding position to the open position. At this time, the water level detection member 200 can detect the water tank 100, including the state with water and the state without water. By setting a shielding member 300 between the water tank 100 and the water level detection member 200 that can be switched between a shielding position and an open position by rotation, the water level detection member 200 can be used to distinguish between the water state, the waterless state and the out-of-position state of the water tank 100, so as to reduce the water level detection cost.

[0063] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0064] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0065] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A water tank water level detection device, characterized in that: include: A water tank, comprising a box body having a containing cavity and a protrusion arranged on an outer side wall of the box body; A water level detection component, a mounting component provided on one side of the box body; and A shielding member is rotatably connected to the mounting member and is located between the water level detection member and the box body. The shielding member has a shielding position and an opening position. When the box body is close to the mounting member, the convex portion of the shielding member can push the shielding member to rotate, so as to switch the shielding member from the shielding position to the opening position. In the shielding position, the shielding member can shield the detection end of the water level detection member; in the opening position, the detection end of the water level detection member faces the water tank and can detect the water level of the water tank.

2. The water tank water level detection device according to claim 1, characterized in that: The shielding member includes a shielding portion and an operating portion connected to the side of the shielding portion; one end of the shielding portion is rotatably connected to the mounting member; The protrusion corresponds to an end of the operating portion away from the shielding portion, and causes the shielding member to rotate by acting on the operating portion.

3. The water tank water level detection device according to claim 2, characterized in that: The protrusion is formed with a first inclined surface, and in a direction away from the box body, the first inclined surface is inclined in a direction away from the shielding member; and / or The operating portion is formed with a second inclined surface, and along a direction away from the shielding portion, the second inclined surface is inclined toward the mounting member.

4. The water tank water level detection device according to claim 2, characterized in that: The shielding member further includes a balancing portion, which is located at a side of the shielding portion away from the operating portion.

5. The water tank water level detection device according to claim 4, characterized in that: The balancing portion and the operating portion are symmetrically arranged on opposite sides of the shielding portion.

6. The water tank water level detection device according to any one of claims 1 to 5, characterized in that: a first mounting portion formed on the mounting member; The shielding member forms a second mounting portion that is rotatably matched with the first mounting portion.

7. The water tank water level detection device according to claim 6, characterized in that: The first mounting portion is configured as a cylindrical protrusion provided on the mounting member; The second mounting portion is configured as a rotating hole, and the rotating hole is rotatably connected to the cylindrical protrusion.

8. The water tank water level detection device according to claim 7, characterized in that: A limiting structure for limiting the position of the shielding member is formed at one end of the cylindrical protrusion away from the mounting member.

9. The water tank water level detection device according to claim 8, characterized in that: The limiting structure is configured as a limiting portion radially extending from the outer side wall of the cylindrical protrusion; Along the direction of the cylindrical protrusion, the limiting portion is formed with a guiding inclined surface for installing the shielding member.

10. An electrical device, characterized in that: The electrical equipment includes the water tank water level detection device according to any one of claims 1-9.

Images