Refrigerator

Abstract

This application discloses a refrigerator with a water-receiving structure below the kettle to collect overflowing water. An overflow sensor is also included within the water-receiving structure. The overflow sensor detects the liquid level in the water-receiving structure and can be used to control the refrigerator's water-filling mechanism to determine whether to continue filling the kettle. The overflow sensor includes a first detection terminal and a second detection terminal, both extending along the height of the refrigerator body. The bottom end of the first detection terminal is located below the bottom end of the second detection terminal. This creates a large gap between the first and second detection terminals, exceeding the surface tension limit of a water droplet suspended between them. This prevents water droplets from suspending between the two detection terminals, thus preventing electrical conduction and avoiding false liquid level detection due to water droplets.

Description

Technical Field

[0001] This application relates to the field of refrigeration technology, and more particularly to a refrigerator. Background Technology

[0002] Currently, some refrigerators have a water reservoir and water filling mechanism inside the door. Users can control the water filling mechanism via the control panel on the refrigerator door, causing it to fill the reservoir with a certain amount of water. The water in the reservoir, under the refrigerator's cooling effect, forms chilled water, which users can easily access as needed. When the reservoir overflows, the water can be collected in the drip tray located below the reservoir. An overflow sensor inside the drip tray detects the liquid level and alerts the user to empty the drip tray when it reaches a preset height.

[0003] However, existing overflow sensors may have electrical continuity between their two detection terminals due to water droplets hanging on them, causing the overflow sensor to perform a detection action and resulting in false detections when the water level in the water collection box has not reached the preset height. Utility Model Content

[0004] The refrigerator provided in this application can reduce the false detection rate of the overflow sensor, accurately detect the water level in the water inlet structure, and avoid false alarms.

[0005] The first aspect of this application provides a refrigerator, comprising:

[0006] Box;

[0007] A door body, which is rotatably connected to the housing;

[0008] A kettle, which is detachably mounted on the door;

[0009] A water injection mechanism is provided on the door body and is used to inject water into the kettle when the kettle is placed on the door body.

[0010] A water receiving structure is provided on the door body and located below the kettle along a first direction, the water receiving structure being used to receive water overflowing from the kettle;

[0011] An overflow sensor is installed in the door body and located in the water receiving structure. The overflow sensor is used to detect the water level in the water receiving structure. The water injection mechanism is also used to stop injecting water into the kettle when the overflow sensor detects that the liquid level in the water receiving structure has reached a preset liquid level.

[0012] The overflow sensor includes:

[0013] A first detection terminal, the first detection terminal extending along the first direction;

[0014] The second detection terminal is spaced apart from the first detection terminal in a second direction. The second detection terminal extends along the first direction, and in the first direction, the bottom end of the first detection terminal is located below the bottom end of the second detection terminal.

[0015] Wherein, the first direction is the height direction of the box, and the second direction is perpendicular to the height direction.

[0016] The refrigerator of this application has a water-receiving structure below the kettle to collect overflowing water, and an overflow sensor located in the water-receiving structure. The overflow sensor detects the liquid level in the water-receiving structure, thereby controlling the refrigerator's water filling mechanism to determine whether to continue filling the kettle. Furthermore, to prevent erroneous detection of the liquid level in the water-receiving structure, this application designs the overflow sensor's structure as follows: the overflow sensor includes a first detection terminal and a second detection terminal, both extending along the height direction of the refrigerator body, with the bottom end of the first detection terminal located below the bottom end of the second detection terminal. In this way, since there is a height difference between the bottom ends of the first and second detection terminals in the height direction of the refrigerator, the height distance between the first and second detection terminals is increased on the basis of the original horizontal distance between the two detection terminals. This makes the distance between the bottom ends of the first and second detection terminals large enough that, with the overall volume of the overflow sensor remaining roughly unchanged, the distance between the first and second detection terminals exceeds the limit that the surface tension of the water droplet can withstand when it is suspended between the two detection terminals. That is, water droplets cannot be suspended between the first and second detection terminals, which can prevent electrical conduction between the two detection terminals due to the suspension of water droplets, and thus avoid false detection of liquid level due to water droplets.

[0017] In one possible implementation, in the first direction, the top end of the first detection terminal is located below the bottom end of the second detection terminal, so that the first detection terminal and the second detection terminal are offset from each other in the first direction.

[0018] By positioning the top of the first detection terminal below the bottom of the second detection terminal, the first and second detection terminals are completely offset in the height direction, meaning there is no overlap between them. Thus, even if a water droplet is suspended on at least one of the first and second detection terminals, the water droplet cannot contact the other detection terminal due to their offset arrangement. This ensures that no electrical continuity occurs at any position of the first and second detection terminals in the height direction due to a water droplet, preventing false liquid level detection caused by water droplets.

[0019] In one possible implementation, the overflow sensor further includes:

[0020] An insulating main body is disposed on the door body;

[0021] A first insulating portion is connected to the bottom end of the insulating main body portion and extends along the first direction to a portion located in the water-receiving structure; the first detection terminal is disposed at the end of the first insulating portion away from the insulating main body portion.

[0022] The second insulating portion is connected to the bottom end of the insulating main body and is spaced apart from the first insulating portion along the second direction. The second insulating portion extends along the first direction to a portion located in the water-receiving structure. The second detection terminal is disposed at the end of the second insulating portion away from the insulating main body. The extension length of the first insulating portion is greater than the extension length of the second insulating portion, so that the first detection terminal and the second detection terminal are at least partially offset from each other in the first direction.

[0023] By placing the first detection terminal at the bottom of the first insulating part and the second detection terminal at the bottom of the second insulating part, with the first insulating part extending longer than the second insulating part in the height direction of the refrigerator, the first and second detection terminals are staggered. In this way, the portions above the first and second detection terminals are all insulating portions. Even if water droplets are suspended between the first and second insulating parts or water flows downwards, it will not cause electrical conductivity between the first and second detection terminals, thus avoiding false liquid level detection caused by water droplets.

[0024] In one possible implementation, the extension length of the first detection terminal is greater than the extension length of the second detection terminal, so that the bottom of the first detection terminal and the bottom of the second detection terminal are offset from each other in the first direction.

[0025] The extension length of the first detection terminal is greater than that of the second detection terminal. This further increases the distance between the bottom ends of the first and second detection terminals, ensuring that the distance between the bottom ends of the first and second detection terminals is greater than the limit that the surface tension can withstand when a water droplet is stably suspended. Thus, even if a water droplet flows downward along the first and second detection terminals under the influence of gravity, when the water droplet reaches the bottom end of the second detection terminal, due to the larger distance between the bottom ends of the first and second detection terminals, the water droplet will either separate from the first detection terminal and fall, or separate from the second detection terminal and flow downward along the first detection terminal. This prevents the water droplet from being stably suspended between the first and second detection terminals, thus avoiding electrical conduction between the bottom ends of the first and second detection terminals due to the suspension of the water droplet. This also prevents false liquid level detection caused by water droplets.

[0026] In one possible implementation, the bottom end of at least one of the first detection terminal and the second detection terminal is bent in a direction away from the other; and / or,

[0027] In the second direction, the minimum distance between the first detection terminal and the second detection terminal is 1mm-10mm.

[0028] By bending the bottom of at least one of the first and / or second detection terminals away from the other, the horizontal distance between the bottom of the first and second detection terminals can be increased. This increases the overall distance between the bottom of the first and second detection terminals, further ensuring that water droplets do not hang between them, preventing false liquid level detection. In the second direction, the minimum distance between the first and second detection terminals is 1mm-10mm. Within this range, it ensures that water droplets do not hang between the first and second detection terminals while maintaining a compact arrangement, reducing the space occupied by the overflow sensor. When the distance is less than 1mm, the distance between the first and second detection terminals is too small, making it easy for water droplets to hang, potentially causing electrical conduction between the two detection terminals and resulting in false detection. When the distance is greater than 10mm, the distance between the first and second detection terminals is too large, making the overflow sensor too bulky, which is detrimental to the slim design of the refrigerator door.

[0029] In one possible implementation, the housing has a receiving chamber, and the kettle, the water filling mechanism, and the water receiving structure are all located on the same side of the door. When the door is rotated to close the receiving chamber, the kettle, the water filling mechanism, and the water receiving structure are all located in the receiving chamber.

[0030] By placing the kettle, water filling mechanism, and water receiving structure all inside the door, when the door is closed, these components are all inside the refrigerator. This makes the refrigerator's overall appearance more unified and seamless. Furthermore, because the kettle is inside the refrigerator when the door is closed, dust and other impurities are prevented from entering, ensuring a high level of cleanliness for both the kettle and the water inside.

[0031] In one possible implementation, the refrigerator further includes:

[0032] A placement platform is provided with a positioning groove. An overflow port extending in a third direction is provided on the side wall of the positioning groove. The overflow port is connected to the positioning groove and the water receiving structure. In the first direction of the box, the water receiving structure is located below the placement platform. The positioning groove is at least used to accommodate the bottom of the kettle to position the kettle.

[0033] Wherein, the second direction is the width direction of the box, the third direction is the depth direction of the box, and the width direction is perpendicular to the depth direction.

[0034] A platform is provided above the water receiving structure to receive the kettle. A positioning groove is provided on the side of the platform away from the water receiving structure. When the kettle is placed in the preset position, a portion of the kettle's bottom is located within the positioning groove, and the kettle's position is constrained by the groove. This positioning groove allows the kettle to be positioned accurately, ensuring the water filling mechanism can accurately fill the kettle. Simultaneously, an overflow outlet is provided on the side wall of the platform surrounding the positioning groove. When the kettle overflows, the overflowing water flows into the positioning groove, then out through the overflow outlet, and into the water receiving mechanism connected to the overflow outlet. This prevents water from overflowing from the positioning groove and flowing into other areas inside the refrigerator.

[0035] In one possible implementation, the bottom of the kettle is provided with a locking structure extending in the third direction. When the kettle is placed in the positioning groove, the locking structure at least partially extends into the overflow port. The side wall of the placement platform with the overflow port has an upper edge arranged opposite to the bottom of the positioning groove. The locking structure and the upper edge are fitted with a clearance to fix the kettle.

[0036] By incorporating a locking structure at the bottom of the kettle, when the kettle is placed in the positioning groove, the locking structure can at least partially extend into the overflow port. The side wall of the placement platform with the overflow port has an upper edge arranged opposite to the bottom of the positioning groove. The locking structure secures the kettle by engaging with the upper edge. Thus, when the user opens the door, causing the kettle to tip away from the door due to inertia, the locking structure can hold the upper edge, preventing the kettle from tipping over, thereby achieving the purpose of preventing the kettle from tipping over.

[0037] Secondly, this application also provides a refrigerator, comprising:

[0038] Box;

[0039] A door body, which is rotatably connected to the housing;

[0040] A kettle, which is detachably mounted on the door;

[0041] A water injection mechanism is provided on the door body, and the water injection mechanism is used to inject water into the kettle when the kettle is in a preset position on the door body;

[0042] A water receiving structure is provided on the door body and located below the kettle along a first direction, the water receiving structure being used to receive water overflowing from the kettle;

[0043] An overflow sensor is installed in the door body and located in the water receiving structure. The overflow sensor is used to detect the water level in the water receiving structure. The water injection mechanism is also used to stop injecting water into the kettle when the overflow sensor detects that the liquid level in the water receiving structure has reached a preset liquid level.

[0044] The overflow sensor includes:

[0045] A first detection terminal, the first detection terminal extending along the first direction;

[0046] The second detection terminal is spaced apart from the first detection terminal in a second direction, the second detection terminal extends along the first direction, and the first detection terminal and the second detection terminal are at least partially offset from each other in the first direction.

[0047] Wherein, the first direction is the height direction of the box, and the second direction is perpendicular to the height direction.

[0048] The refrigerator of this application has a water-receiving structure below the kettle to collect overflowing water, and an overflow sensor located in the water-receiving structure. The overflow sensor detects the liquid level in the water-receiving structure, which can be used to control the refrigerator's water-filling mechanism to determine whether to continue filling the kettle. Furthermore, to prevent erroneous detection of the liquid level in the water-receiving structure, this application designs the overflow sensor's structure as follows: the overflow sensor includes a first detection terminal and a second detection terminal, both extending along the height direction of the refrigerator body. The first and second detection terminals are at least partially offset along the height direction of the refrigerator, such that their bottom ends are offset from each other. In this way, based on the original horizontal spacing between the first and second detection terminals, the vertical spacing between the first and second detection terminals is increased. With the overall volume of the overflow sensor remaining roughly unchanged, a large spacing is created between the bottom ends of the first and second detection terminals. This spacing exceeds the limit that the surface tension of a water droplet can withstand when suspended between the two detection terminals. Water droplets cannot be suspended between the first and second detection terminals, which can prevent electrical conduction between the two detection terminals due to water droplets, and thus avoid false detection of liquid level due to water droplets.

[0049] Thirdly, this application also provides a refrigerator, comprising:

[0050] Box;

[0051] A door body, which is rotatably connected to the housing;

[0052] A kettle, which is detachably mounted on the door;

[0053] A water injection mechanism is provided on the door body, and the water injection mechanism is used to inject water into the kettle when the kettle is in a preset position on the door body;

[0054] A water receiving structure is provided on the door body and located below the kettle along a first direction, the water receiving structure being used to receive water overflowing from the kettle;

[0055] An overflow sensor is installed in the door body and located in the water receiving structure. The overflow sensor is used to detect the water level in the water receiving structure. The water injection mechanism is also used to stop injecting water into the kettle when the overflow sensor detects that the liquid level in the water receiving structure has reached a preset liquid level.

[0056] The overflow sensor includes:

[0057] Insulating main body;

[0058] A first detection terminal is disposed on the insulating main body portion, and in a second direction, the first detection terminal is located on one side of the insulating main body portion;

[0059] The second detection terminal is disposed on the insulating main body. In the second direction, the second detection terminal is located on the other side of the insulating main body. The first detection terminal and the second detection terminal extend in a direction away from each other.

[0060] Wherein, the first direction is the height direction of the box, and the second direction is perpendicular to the height direction.

[0061] The refrigerator of this application has a water-receiving structure below the kettle to collect overflowing water, and an overflow sensor located within the water-receiving structure. The overflow sensor detects the liquid level in the water-receiving structure, which can be used to control the refrigerator's water-filling mechanism to determine whether to continue filling the kettle. Furthermore, to prevent erroneous detection of the liquid level in the water-receiving structure, this application designs the overflow sensor's structure. The overflow sensor includes a first detection terminal and a second detection terminal respectively disposed on opposite sides of an insulating main body in a second direction, extending in a direction away from each other. This allows for a larger distance between the two detection terminals while maintaining a roughly constant overall volume. Simultaneously, the two detection terminals are separated by the insulating main body, preventing accidental electrical conduction between them by water droplets. This prevents the overflow sensor from erroneously detecting the water level in the water-receiving structure due to electrical conduction from water droplets, thus reducing the false detection rate of the overflow sensor, accurately detecting the water level in the water-receiving structure, and avoiding false alarms.

[0062] Compared with the prior art, the beneficial effects of this application are as follows:

[0063] The refrigerator of this application, by staggering the first and second detection terminals of the overflow sensor disposed within the water receiving structure in the vertical or horizontal direction, maintains a suitable distance between the first and second detection terminals. This distance exceeds the limit that the surface tension of a water droplet can withstand when suspended between the two detection terminals, preventing water droplets from being suspended between the first and second detection terminals. This avoids accidental conduction between the first and second detection terminals due to water droplets, preventing the overflow sensor from erroneously detecting the water level in the water receiving structure due to electrical conduction by water droplets. In other words, it reduces the false detection rate of the overflow sensor, accurately detects the water level in the water receiving structure, and avoids false alarms. Attached Figure Description

[0064] Figure 1 This is a three-dimensional structural diagram of the refrigerator in the embodiments of this application;

[0065] Figure 2 yes Figure 1 The diagram shown is a three-dimensional structural diagram of the refrigerator's inner cabinet.

[0066] Figure 3 This is a schematic diagram of the door structure in an embodiment of this application;

[0067] Figure 4 yes Figure 3 The diagram shows a cross-sectional view of the door along the A-A' direction;

[0068] Figure 5 This is a schematic diagram of the structure of the door with an overflow sensor in an embodiment of this application;

[0069] Figure 6 yes Figure 5 Enlarged view of region B in the middle;

[0070] Figure 7 This is a schematic diagram of the structure of an overflow sensor in an embodiment of this application;

[0071] Figure 8 This is a schematic diagram of the overflow sensor in an embodiment of this application, where the first detection terminal and the second detection terminal are completely staggered.

[0072] Figure 9 This is a schematic diagram of the overflow sensor structure when the first detection terminal is bent in the embodiment of this application;

[0073] Figure 10 This is a schematic diagram of the overflow sensor in the embodiment of this application, in which the first detection terminal and the second detection terminal are arranged at an angle.

[0074] Figure 11 This is a schematic diagram of the overflow sensor having a first insulating part and a second insulating part in an embodiment of this application;

[0075] Figure 12 This is a structural schematic diagram of a door with a placement platform in an embodiment of this application;

[0076] Figure 13 yes Figure 12 Enlarged view of region C in the middle;

[0077] Figure 14 yes Figure 4 Enlarged view of region A in the middle;

[0078] Figure 15 This is another structural schematic diagram of the overflow sensor in the embodiments of this application;

[0079] Figure 16 This is another structural schematic diagram of the overflow sensor in the embodiments of this application.

[0080] Explanation of reference numerals in the attached figures:

[0081] 1. Refrigerator; 11. Cabinet; 11a. Receiving chamber; 12. Door; 13. Kettle; 131. Locking structure; 14. Water filling mechanism; 15. Water receiving structure; 15a. Water inlet; 15b. Drain outlet; 16. Overflow sensor; 161. First detection terminal; 161a. First bottom end; 161b. First top end; 162. Second detection terminal; 162a. Second bottom end; 163. Insulating main body; 1631. Combustion part; 164. First insulating part; 165. Second insulating part; 17. Placement platform; 17a. Positioning groove; 171. Side wall; 171a. Overflow outlet; 1711. Upper edge.

[0082] P1, height direction; P2, width direction; P3, depth direction. Detailed Implementation

[0083] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0084] In this application, the terms "upper," "rear," "inner," "outer," and "middle," etc., indicate orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the present invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0085] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0086] Furthermore, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable link, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection via an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0087] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0088] Liquid level sensors are commonly used in refrigerators to control the automatic water filling of the kettle. Besides detecting the water level inside the kettle, they can also detect the level of water overflowing from the kettle, thus controlling the automatic water filling process. Electrode-type liquid level sensors are commonly used due to their low cost and ease of installation and maintenance.

[0089] However, in related technologies, water droplets may be suspended between the two detection terminals of the electrode-type liquid level sensor due to water flow or water vapor condensation. The water droplets will cause the two detection terminals to conduct electricity, causing the electrode-type liquid level sensor to falsely detect the water surface due to the electrical conduction of the water droplets, and thus conduct. In other words, the electrode-type liquid level sensor may output a result indicating that the liquid level has been detected when the water surface height has not reached the preset height.

[0090] To address this issue, the inventors attempted to prevent water droplets from forming between the two detection terminals by increasing the horizontal distance between them, or by incorporating a drainage structure on the level sensor to divert any potential water flow or droplets away from the detection terminals, thus preventing the terminals from conducting electricity due to water droplets. However, directly increasing the horizontal distance between the two detection terminals would require increasing the horizontal dimensions of the level sensor to accommodate them, resulting in a larger footprint and hindering the compact and slim design of the refrigerator door. Incorporating a drainage structure would not only increase the size of the level sensor but also complicate its structure.

[0091] In view of this, embodiments of this application provide a refrigerator that, by offsetting the first and second detection terminals of an overflow sensor disposed within the water receiving structure in the height or horizontal direction, maintains a suitable distance between the first and second detection terminals. This distance exceeds the limit that the surface tension of a water droplet can withstand when suspended between the two detection terminals, preventing water droplets from being suspended between the first and second detection terminals. This avoids accidental conduction between the first and second detection terminals due to water droplets, preventing the overflow sensor from erroneously detecting the water level in the water receiving structure due to electrical conduction from water droplets. In other words, it can reduce the false detection rate of the overflow sensor, accurately detect the water level in the water receiving structure, and avoid false alarms.

[0092] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.

[0093] Firstly, please see Figures 1 to 4 ,in, Figure 1 This is a three-dimensional structural diagram of the refrigerator in the embodiments of this application. Figure 2 yes Figure 1 The diagram shown is a three-dimensional structural diagram of the refrigerator's inner cabinet. Figure 3 This is a schematic diagram of the door structure in an embodiment of this application. Figure 4 yes Figure 3 The diagram shows a cross-sectional view of the door along the A-A' direction.

[0094] In some embodiments, the refrigerator 1 includes a cabinet 11 with a receiving chamber 11a. The receiving chamber 11a can be divided into different functional spaces such as a freezer compartment and a fresh food compartment. Users can use these functional spaces to store fruits, vegetables, fresh food, or other items that need to be frozen or preserved, according to their actual needs. The cabinet 11 is generally in the shape of a regular square prism, with one surface / sidewall removed to expose the receiving chamber 11a.

[0095] It is understandable that the refrigerator body is usually in the form of a cuboid structure, that is, the body 11 has two mutually perpendicular height directions, width directions and depth directions. Among them, the height direction P1 can be regarded as the first direction, the width direction P2 can be regarded as the second direction, and the depth direction P3 can be regarded as the third direction.

[0096] In some embodiments, the refrigerator 1 further includes a door 12, which is rotatably connected to the cabinet 11. By rotating the door 12, the door 12 can cover or expose the receiving chamber 11a.

[0097] In some embodiments, the refrigerator 1 also includes a kettle 13 detachably mounted on the door 12. The kettle 13 can be removed from the door 12 and can also be placed back on the door 12. For example, when a user needs to use the water in the kettle 13, the kettle 13 can be removed from the door 12 to use the water. After use, the user can place the kettle 13 back on the door 12.

[0098] In some embodiments, the refrigerator 1 also includes a water injection mechanism 14 disposed on the door 12, which is used to inject water into the kettle 13. For example, when there is no water in the kettle 13, or when the water level in the kettle 13 is low and the water level does not reach the preset height, the water injection mechanism 14 can inject water into the kettle 13 until the water level in the kettle 13 reaches the preset height.

[0099] In some embodiments, the refrigerator 1 also includes a water-receiving structure 15 disposed on the door 12 and located below the kettle 13 along the height direction P1. This water-receiving structure can be used to collect water from the kettle. For example, when the kettle 13 overflows, that is, when water overflows from inside the kettle 13, the water-receiving structure 15 can collect the overflowing water and temporarily store it, preventing the overflowing water from the kettle 13 from flowing into other areas inside the refrigerator 1.

[0100] Combination Figures 5 to 7 ,in, Figure 5 This is a schematic diagram of the structure of a door with an overflow sensor in an embodiment of this application. Figure 6 yes Figure 5 Enlarged diagram of region B in the middle. Figure 7 This is a schematic diagram of an overflow sensor in one embodiment of this application.

[0101] In some embodiments, the refrigerator 1 further includes an overflow sensor 16 disposed on the door 12 and located in the water receiving structure 15, the overflow sensor 16 being used to detect the water level stored in the water receiving structure 15. It is understood that the overflow sensor 16 is an electrode-type liquid level sensor.

[0102] In some embodiments, the overflow sensor 16 can be used to control the water filling mechanism 14. For example, during the process of the water filling mechanism 14 filling the kettle 13, if the overflow sensor 16 detects that the water level in the water receiving structure 15 has reached a preset height, the water filling mechanism 14 can stop filling the kettle 13 according to the detection result of the overflow sensor 16. At the same time, when the user knows from the detection result of the overflow sensor 16 that the water level in the water receiving structure 15 has reached the preset water level, the user can clean the water receiving structure 15 to drain the water inside.

[0103] In some embodiments, the overflow sensor 16 includes a first detection terminal 161 extending along the height direction P1. The overflow sensor 16 also includes a second detection terminal 162 extending along the height direction P1. The first detection terminal 161 and the second detection terminal 162 are used together to detect the liquid level in the water receiving structure 15.

[0104] Specifically, when the water level in the water receiving structure 15 rises to a preset height, causing the first detection terminal 161 and the second detection terminal 162 to simultaneously contact or be submerged in the water surface, and thus electrically connecting the first detection terminal 161 and the second detection terminal 162, the electrode-type liquid level sensor can output a detection signal. At this time, the user can determine that the water in the water receiving structure 15 has reached the preset water level based on this detection signal.

[0105] It is understandable that the preset water level can be a pre-set liquid level, such as the maximum water level of the kettle 13, or it can be lower than the maximum water level of the kettle 13, such as 1.5L, 1L or 500mL, etc., which can be set according to the user's needs.

[0106] Optionally, the first detection terminal 161 and the second detection terminal 162 may be spaced apart in the width direction P2 or the depth direction P3. The following description takes the spaced-apart arrangement of the first detection terminal 161 and the second detection terminal 162 in the width direction P2 as an example, but it is not to be said that the following content is only applicable to this example.

[0107] In some embodiments, the minimum distance d between the first detection terminal 161 and the second detection terminal 162 in the width or depth direction is 1mm-10mm, such as 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, or other distances within this range. Within this range, it ensures that water droplets do not hang between the first detection terminal 161 and the second detection terminal 162, while also keeping them compact and reducing the space occupied by the overflow sensor 16. When d is less than 1mm, water droplets are easily hung between the first detection terminal 161 and the second detection terminal 162, causing electrical conduction between the two detection terminals and resulting in false water level readings. When d is greater than 10mm, the distance between the first detection terminal 161 and the second detection terminal 162 is too large, which would make the overflow sensor 16 occupy too much volume, which is not conducive to the slim design of the refrigerator door 12.

[0108] See also Figures 8 to 10 , Figure 8 This is a schematic diagram of the overflow sensor in an embodiment of this application, where the first and second detection terminals are completely staggered. Figure 9 This is a schematic diagram of the overflow sensor structure when the first detection terminal is bent in the embodiment of this application. Figure 10 This is a schematic diagram of the overflow sensor in the embodiment of this application, in which the first detection terminal and the second detection terminal are arranged at an angle.

[0109] In some embodiments, along the height direction P1 of the refrigerator 1, the first bottom end 161a of the first detection terminal 161 is located below the second bottom end 162a of the second detection terminal 162. That is, the first detection terminal 161 and the second detection terminal 162 are at least partially offset in the height direction P1.

[0110] This configuration increases the height distance between the first detection terminals 161 and 162, beyond their original horizontal spacing. This results in a sufficiently large gap between the bottom ends of the two terminals, ensuring that the overall volume of the overflow sensor 16 remains roughly unchanged. This distance exceeds the surface tension limit of a water droplet suspended between the terminals, preventing water droplets from suspending between them and thus avoiding false liquid level detections. Furthermore, by appropriately setting the height distance P1 between the bottom ends of the first and second detection terminals 161 and 162, the horizontal size of the overflow sensor 16 is not increased.

[0111] It is understandable that in order to achieve the first detection terminal 161 and the second detection terminal 162 being at least partially offset in the height direction P1, there can be different configuration methods, which will be illustrated with examples below.

[0112] In some embodiments, in the height direction P1, the first top end 161b of the first detection terminal 161 is located below the second bottom end 162a of the second detection terminal 162. Thus, the first detection terminal 161 and the second detection terminal 162 are completely offset in the height direction P1, meaning there is no overlapping area or portion. Even if a water droplet is suspended on at least one of the first detection terminal 161 and the second detection terminal 162, because the two are completely offset, the water droplet cannot contact the other detection terminal. This ensures that the first detection terminal 161 and the second detection terminal 162 will not have electrical conductivity at any position in the height direction P1 due to the water droplet, thereby avoiding false liquid level detection caused by the water droplet.

[0113] In this embodiment, the extension length of the first detection terminal 161 can be greater than the extension length of the second detection terminal 162. This further increases the distance between the first bottom end 161a of the first detection terminal 161 and the second bottom end 162a of the second detection terminal 162, thereby further ensuring that the distance between the first bottom end 161a of the first detection terminal 161 and the second bottom end 162a of the second detection terminal 162 is greater than the limit that the surface tension can withstand when a water droplet is stably suspended. Thus, even if a water droplet flows downwards along the first detection terminal 161 and the second detection terminal 162 under gravity, when the water droplet flows to the second bottom end 162a of the second detection terminal 162, the distance between the first bottom end 161a of the first detection terminal 161 and the second bottom end 162a of the second detection terminal 162 will be greater than the limit that the surface tension can withstand when the water droplet is stably suspended. The distance between the second bottom end 162a of the first detection terminal 161 and the second detection terminal 162 is relatively large. Water droplets will separate from the first detection terminal 161 and fall off at this point, or separate from the second detection terminal 162 and flow downward along the first detection terminal 161. This makes it impossible for water droplets to be stably suspended between the first detection terminal 161 and the second detection terminal 162. As a result, water droplets cannot be formed between the first bottom end 161a of the first detection terminal 161 and the second bottom end 162a of the second detection terminal 162. Therefore, the first bottom end 161a of the first detection terminal 161 and the second bottom end 162a of the second detection terminal 162 will not be electrically connected due to the suspension of water droplets.

[0114] For example, the distance between the bottom end 161a of the first detection terminal 161 and the bottom end 162a of the second detection terminal 162 in the height direction P1 is not less than 2mm, that is, the height difference between the bottom ends 161a of the first detection terminal 161 and the bottom ends 162a of the second detection terminal 162 is not less than 2mm. In other words, the extension length of the first detection terminal 161 is greater than the extension length of the second detection terminal 162, and the difference is not less than 2mm.

[0115] In some embodiments, the distance between the bottom end 161a of the first detection terminal 161 and the bottom end 162a of the second detection terminal 162 in the height direction P1 does not exceed 12mm, that is, the height difference between the bottom ends 161a of the first detection terminal 161 and the bottom ends 162a of the second detection terminal 162 is not greater than 12mm. In other words, the extension length of the first detection terminal 161 is greater than the extension length of the second detection terminal 162, and the difference is not greater than 12mm.

[0116] In some embodiments, the bottom end of at least one of the first detection terminal 161 and the second detection terminal 162 is bent away from the other. For example, the first bottom end 161a of the first detection terminal 161 may be bent away from the second detection terminal 162, or the second bottom end 162a of the second detection terminal 162 may be bent away from the first detection terminal 161, or the first bottom end 161a of the first detection terminal 161 may be bent away from the second detection terminal 162, while the second bottom end 162a of the second detection terminal 162 may be bent away from the first detection terminal 161. By bending the bottom end of at least one of the first detection terminal 161 and / or the second detection terminal 162 toward a direction away from the other, the horizontal distance between the bottom end 161a of the first detection terminal 161 and the second bottom end 162a of the second detection terminal 162 can be increased, thereby increasing the distance between the first bottom end 161a of the first detection terminal 161 and the second bottom end 162a of the second detection terminal 162. This further ensures that no water droplets will hang between the first bottom end 161a of the first detection terminal 161 and the second bottom end 162a of the second detection terminal 162, preventing false detection of liquid level.

[0117] For example, such as Figure 9 As shown, the bent portions at the bottom of the first detection terminal 161 and / or the second detection terminal 162 can be straight, making the first detection terminal 161 and / or the second detection terminal 162 L-shaped, or a bent line with an obtuse angle. Alternatively, the bottom portions of the first detection terminal 161 and / or the second detection terminal 162 can be bent into an arc shape or an elliptical arc shape. Or, the first detection terminal 161 and / or the second detection terminal 162 can be bent into three parts, including a first part, a second part, and a third part connected in sequence. The first part extends downward along the height direction P1, the second part is an arc or an elliptical arc, and the third part is straight, with the first part and the second part tangent to each other at their connection point. Of course, in some other embodiments, the first detection terminal 161 and / or the second detection terminal 162 may only have bent portions facing away from each other.

[0118] In some embodiments, for example Figure 10As shown, the first detection terminal 161 and the second detection terminal 162 can be arranged at an angle. Furthermore, the distance between the first detection terminal 161 and the second detection terminal 162 increases downwards along the height direction P1. That is, in the height direction P1, the distance between the first detection terminal 161 and the second detection terminal 162 increases from the top to the bottom, reaching its maximum at the bottom of both terminals. It can be understood that when either the first detection terminal 161 or the second detection terminal 162 is bent, the first part of the bent detection terminal forms an angle with the other detection terminal; when both the first detection terminal 161 and the second detection terminal 162 are bent, the first parts of both form an angle.

[0119] In some embodiments, the included angle α1 between the first detection terminal 161 and the second detection terminal 162 can be 0°-45°, such as 0°, 5°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, or other angles within this range. Within this range, it can be ensured that water droplets cannot be suspended between the bottom ends of the first detection terminal 161 and the second detection terminal 162, while ensuring that the dimensions of the first detection terminal 161 and the second detection terminal 162 are small in the width direction P2 or the depth direction P3. When the included angle between the first detection terminal 161 and the second detection terminal 162 is greater than 45°, the extension length of the first detection terminal 161 and the second detection terminal 162 in the width direction P2 or the depth direction P3 is excessive.

[0120] Please see Figure 11 , Figure 11 This is a schematic diagram of the structure of an overflow sensor having a first insulating part and a second insulating part in an embodiment of this application.

[0121] In some embodiments, the overflow sensor 16 may further include an insulating main body 163, a first insulating part 164, and a second insulating part 165. The insulating main body 163 is disposed on the door body 12, and the first insulating part 164 and the second insulating part 165 are both disposed on the insulating main body 163 and extend downward along the height direction P1. The first insulating part 164 and the second insulating part 165 each extend at least partially into the water-receiving structure 15. A first detection terminal 161 is disposed at the end of the first insulating part 164 away from the insulating main body 163, and a second detection terminal 162 is disposed at the end of the second insulating part 165 away from the insulating main body 163. Thus, when water flows downward due to gravity, even if water droplets are present between the first insulating part 164 and the second insulating part 165, no electrical conduction will occur, and false detection of the liquid level will not occur.

[0122] It is understood that the insulating main body 163 refers to the main body of the housing of the overflow sensor 16, which can be used to house electronic components such as chips. The insulating main body 163 is generally made of insulating materials such as plastic. The first insulating part 164 is the part on the housing of the overflow sensor 16 used to mount and fix the first detection terminal 161. The first insulating part 164 is fixedly connected to the insulating main body 163. The insulating main body 163 and the first insulating part 164 can be separate or integrally formed. The second insulating part 165 is the part on the housing of the overflow sensor 16 used to mount and fix the second detection terminal 162. The second insulating part 165 is fixedly connected to the insulating main body 163. The insulating main body 163 and the second insulating part 165 can be separate or integrally formed. The first insulating part 164 and the second insulating part 165 are also both made of insulating material.

[0123] It is understandable that when the extension length of the first insulating part 164 is greater than the extension length of the second insulating part 165, and the first top end 161b of the first detection terminal 161 is located below the second bottom end 162a of the second detection terminal 162, there is a sufficient distance between the first bottom end 161a of the first detection terminal 161 and the second bottom end 162a of the second detection terminal 162, so that water droplets cannot be suspended between the first bottom end 161a of the first detection terminal 161 and the second bottom end 162a of the second detection terminal 162.

[0124] In some embodiments, the extension length of the first insulating portion 164 in the height direction P1 is greater than the extension length of the second insulating portion 165 in the height direction P1. Thus, by utilizing the extension lengths of both the first insulating portion 164 and the second insulating portion 165, the first bottom end 161a of the first detection terminal 161 can be located below the second bottom end 162a of the second detection terminal 162, without needing to adjust the extension lengths of the first detection terminal 161 and the second detection terminal 162.

[0125] It is understood that the distance between the bottom end 161a of the first detection terminal 161 and the bottom end 162a of the second detection terminal 162 in the height direction P1 is formed by the extension lengths of both the first detection terminal 161 and the second detection terminal 162, and the extension lengths of both the first insulating portion 164 and the second insulating portion 165. That is, the sum of the extension lengths of the first detection terminal 161 and the first insulating portion 164 is greater than the sum of the extension lengths of the second detection terminal 162 and the second insulating portion 165, and the difference is 2mm-12mm. Of course, in some other embodiments, the extension lengths of the first detection terminal 161 and the second detection terminal 162 are the same, the extension length of the first insulating portion 164 is greater than the extension length of the second insulating portion 165, and the difference is 2mm-12mm.

[0126] In some embodiments, the first insulating portion 164 and the second insulating portion 165 are arranged at an angle. Specifically, the angle α2 between the extending direction of the first insulating portion 164 and the extending direction of the second insulating portion 165 can be 0°-45°, for example, 0°, 5°, 15°, 20°, 25°, 30°, 35°, 40°, 45° or other angles within this range. Within this range, the miniaturization design of the overflow sensor 16 can be satisfied, while ensuring that water droplets do not hang between the first detection terminal 161 located at the bottom end of the first insulating portion 164 and the second detection terminal 162 located at the bottom end of the second insulating portion 165. When the angle between the extending direction of the first insulating portion 164 and the extending direction of the second insulating portion 165 is greater than 45°, the extension length of the first insulating portion 164 and the second insulating portion 165 in the width direction P2 or the depth direction P3 is large, which is not conducive to the miniaturization design of the overflow sensor 16.

[0127] It is understood that both the first insulating portion 164 and the second insulating portion 165 are rod-shaped or block-shaped, and the first detection terminal 161 and the second detection terminal 162 can be rod-shaped, strip-shaped, or sheet-shaped. The extending direction of the first detection terminal 161 can be the same as the extending direction of the first insulating portion 164, and the extending direction of the second detection terminal 162 can be the same as the extending direction of the second insulating portion 165. When the first detection terminal 161 and the second detection terminal 162 are bent, the extending direction of their respective first portions is the same as the extending direction of their corresponding insulating portions.

[0128] In some embodiments, the distance between the first insulating portion 164 and the second insulating portion 165 gradually increases in the downward direction along the height direction P1. Thus, when water droplets are present on the first insulating portion 164 and the second insulating portion 165, the water droplets flow downwards under gravity. Because the distance between the first insulating portion 164 and the second insulating portion 165 gradually increases until it exceeds the limit that the surface tension of the water droplets can withstand, the water droplets cannot simultaneously connect to the first insulating portion 164 and the second insulating portion 165, and therefore cannot connect to the first detection terminal 161 and the second detection terminal 162.

[0129] As an example, the first insulating portion 164 and / or the second insulating portion 165 are rod-shaped, and the cross-sectional area perpendicular to the height direction gradually decreases. That is, the first insulating portion 164 and / or the second insulating portion 165 can be in the shape of an inverted cone or an inverted frustum. Of course, an inverted pyramid or an inverted frustum is also feasible.

[0130] In another exemplary embodiment, the surface of at least one of the first insulating portion 164 and the second insulating portion 165 facing the other is configured as an inclined surface. For example, the surface of the first insulating portion 164 facing the second insulating portion 165 is inclined downward in the height direction toward a direction away from the second insulating portion 165, and the surface of the second insulating portion 165 facing the first insulating portion 164 is inclined downward in the height direction P1 toward a direction away from the first insulating portion 164.

[0131] Please see also Figures 12 to 14 , Figure 12 This is a schematic diagram of the structure of the door with a placement platform in an embodiment of this application. Figure 13 yes Figure 12 Enlarged diagram of region C in the middle. Figure 14 yes Figure 4 An enlarged schematic diagram of region A in the middle.

[0132] In some embodiments, the refrigerator 1 further includes a placement platform 17 disposed on the door 12, with the water receiving structure 15 located below the placement platform 17 in the height direction P1. The placement platform 17 is provided with a positioning groove 17a. When the kettle 13 is placed in a preset position, a portion of the kettle 13 is received in the positioning groove 17a, and the position of the kettle 13 is constrained by the positioning groove 17a. Thus, the positioning groove 17a can position the kettle 13, ensuring it is accurately placed in the preset position, i.e., the position where the water filling mechanism 14 can accurately fill water into the kettle 13. Simultaneously, the sidewalls of the placement platform 17 surrounding the positioning groove 17a can prevent the kettle 13 from shifting, keeping the kettle 13 in a stable position.

[0133] In some embodiments, the sidewall 171 of the placement platform 17 forming the positioning groove 17a is provided with an overflow port 171a. The overflow port 171a communicates with the positioning groove 17a and is located near the bottom of the positioning groove 17a. Simultaneously, the overflow port 171a also communicates with the water receiving structure 15. In this way, water overflowing from the kettle 13 can first enter the positioning groove 17a and then flow from the overflow port 171a into the water receiving structure 15, thereby draining the water that has entered the positioning groove 17a, preventing water accumulation in the positioning groove 17a, and further preventing water from overflowing from the positioning groove 17a and flowing into other areas inside the refrigerator 1.

[0134] When the user opens the door 12, the kettle 13 may tip over due to inertia. To solve this problem, in some embodiments, the bottom of the kettle 13 is provided with a locking structure 131 extending along the depth direction P3. When the kettle 13 is placed in the positioning groove 17a, the locking structure 131 extends at least partially into the overflow port 171a. The side wall 171 of the placement platform 17 with the overflow port 171a has an upper edge 1711. The upper edge 1711 is arranged opposite to the bottom of the positioning groove 17a. The surface of the upper edge 1711 facing the positioning groove 17a forms the inner wall surface of the overflow port 171a. The locking structure 131 fixes the kettle 13 by gap fitting with the upper edge 1711. Thus, when the user opens the door 12, causing the top of the kettle 13 to tend to move away from the door 12, the locking structure 131 can abut against the inner wall of the overflow port 171a. By using the upper edge 1711 to prevent the locking structure 131 from moving further, the kettle 13 is prevented from tipping over. In other words, the overflow port 171a, in addition to its drainage function, is also reused as a structure to prevent the kettle 13 from tipping over.

[0135] In some embodiments, the locking structure 131 is configured as a protrusion extending along the width direction, and the size of the protrusion in the width direction P2 is smaller than the size of the overflow port 171a. This reduces the difficulty of inserting the protrusion into the overflow port 171a, making it easier to fix the kettle 13, and also reduces the space occupied by the protrusion in the overflow port 171a, allowing water in the positioning groove 17a to flow smoothly into the water receiving structure 15.

[0136] In some embodiments, the size of the locking structure 131 in the width direction P2 is 0.6-0.8 times the size of the overflow port 171a, for example, 0.6, 0.7, 0.8, or other values ​​within this range. Within this range, it ensures that the locking structure 131 has sufficient size to have sufficient mechanical strength, making it less prone to deformation or breakage, and can effectively and permanently fix the kettle 13 in conjunction with the overflow port 171a. At the same time, it also ensures that the overflow port 171a has sufficient space to drain water from the positioning groove 17a. When the size of the locking structure 131 is less than 0.6 times the size of the overflow port 171a, the size of the locking structure 131 is too small, the mechanical strength is insufficient, and it is easily deformed or broken under stress, resulting in the failure of the fixing effect on the kettle 13. When the size of the locking structure 131 is greater than 0.8 times the size of the overflow port 171a, the size of the locking structure 131 is too large, occupying too much space in the overflow port 171a, making the drainage of the overflow port 171a less smooth and less efficient.

[0137] In some embodiments, the water receiving structure 15 can be a water receiving box, which is disposed below the placement platform 17, and has a water inlet 15a at one end. The water inlet 15a is below the overflow port 171a and communicates with the overflow port 171a. Water flowing out from the positioning groove 17a through the overflow port 171a enters the water receiving box through the water inlet 15a. Of course, in some embodiments, the water receiving structure 15 can also be other structures capable of collecting water flowing out from the overflow port 171a, such as a water receiving tray.

[0138] In some embodiments, the bottom of the water collection box is also provided with a drain outlet 15b and a seal (not shown) for sealing the drain outlet 15b. When there is a large amount of water stored in the water collection box, the user can remove the seal to allow the water in the water collection box to drain out from the drain outlet 15b. For example, when the overflow sensor 16 detects that the water level in the water collection box has reached a preset height, the user can allow the water in the water collection box to drain out from the drain outlet 15b.

[0139] Please see also Figure 15 and Figure 16 , Figure 15 This is another structural schematic diagram of the overflow sensor in the embodiments of this application. Figure 16 This is another structural schematic diagram of the overflow sensor in the embodiments of this application.

[0140] Secondly, this application also provides a refrigerator, which is substantially the same as the refrigerator provided in the first aspect, with the main difference being the structural design of the detection terminal of the overflow sensor 16.

[0141] In some embodiments, the first detection terminal 161 and the second detection terminal 162 of the overflow sensor 16 extend in the width direction P2 or the depth direction P3. Taking the first detection terminal 161 and the second detection terminal 162 extending in the width direction P2 as an example, the first detection terminal 161 is disposed on one side of the insulating body portion 163 in the width direction P2, and the second detection terminal 162 is disposed on the other side of the insulating body portion 163 in the width direction P2. Furthermore, the first detection terminal 161 and the second detection terminal 162 extend in a direction away from each other. In this way, while keeping the overall volume of the overflow sensor 16 approximately unchanged, a large gap can be made between the two detection terminals. The space between the first detection terminal 161 and the second detection terminal 162 is separated by the insulating body portion 163. Therefore, water droplets cannot be suspended between the first detection terminal 161 and the second detection terminal 162, and thus, accidental electrical conduction due to water droplets will not occur.

[0142] In some embodiments, a confluence portion 1631 may be provided at the bottom of the insulating body portion 163 in the height direction P1. The confluence portion 1631 extends downward in the height direction P1, and the bottom end of the confluence portion 1631 is below the first detection terminal 161 and the second detection terminal 162. In this way, when there is water flow or water droplets on the insulating body portion 163, the water flow or water droplets flow downward under the action of gravity and converge on the confluence portion 1631. This can guide the flow of water away from the first detection terminal 161 and the second detection terminal 162, thereby further reducing the risk of accidental conduction between the first detection terminal 161 and the second detection terminal 162.

[0143] In some embodiments, the cross-sectional area of ​​the confluence portion 1631 gradually decreases perpendicular to the height direction P1 as it descends along the height direction P1. This allows for better guidance of the water flow to a position away from the first detection terminal 161 and the second detection terminal 162, thereby reducing the risk of the water flow or droplets causing the first detection terminal 161 and the second detection terminal 162 to conduct.

[0144] The refrigerator 1 provided in this application, by staggering the first detection terminal 161 and the second detection terminal 162 of the overflow sensor 16 disposed in the water receiving structure 15 in the height direction P1 or the horizontal direction, maintains a suitable distance between the first detection terminal 161 and the second detection terminal 162. This distance exceeds the limit that the surface tension of the water droplet can withstand when it is suspended between the two detection terminals, so that the first detection terminal 161 and the second detection terminal 162 cannot be suspended between them. This avoids accidental conduction between the first detection terminal 161 and the second detection terminal 162 due to water droplets, and prevents the overflow sensor 16 from erroneously detecting the water level in the water receiving structure 15 due to electrical conduction of water droplets. In other words, it can reduce the false detection rate of the overflow sensor 16, accurately detect the water level in the water receiving structure, and avoid false alarms.

[0145] The refrigerator provided in the embodiments of this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the idea of ​​this utility model. There may be changes in the specific implementation and application scope. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A refrigerator characterized by comprising: include: Box; A door body, which is rotatably connected to the housing; A kettle, which is detachably mounted on the door; A water injection mechanism is provided on the door body and is used to inject water into the kettle when the kettle is placed on the door body. A water receiving structure is provided on the door body and located below the kettle along a first direction, the water receiving structure being used to receive water overflowing from the kettle; An overflow sensor is installed in the door body and located in the water receiving structure. The overflow sensor is used to detect the water level in the water receiving structure. The water injection mechanism is also used to stop injecting water into the kettle when the overflow sensor detects that the liquid level in the water receiving structure has reached a preset liquid level. The overflow sensor includes: A first detection terminal, the first detection terminal extending along the first direction; The second detection terminal is spaced apart from the first detection terminal in a second direction. The second detection terminal extends along the first direction, and in the first direction, the bottom end of the first detection terminal is located below the bottom end of the second detection terminal. Wherein, the first direction is the height direction of the box, and the second direction is perpendicular to the height direction.

2. The refrigerator according to claim 1, characterized in that, In the first direction, the top end of the first detection terminal is located below the bottom end of the second detection terminal, so that the first detection terminal and the second detection terminal are offset from each other in the first direction.

3. The refrigerator according to claim 1 or 2, characterized in that, The overflow sensor also includes: An insulating main body is disposed on the door body; A first insulating portion is connected to the bottom end of the insulating main body portion and extends along the first direction to a portion located in the water-receiving structure; the first detection terminal is disposed at the end of the first insulating portion away from the insulating main body portion. The second insulating portion is connected to the bottom end of the insulating main body and is spaced apart from the first insulating portion along the second direction. The second insulating portion extends along the first direction to a portion located in the water-receiving structure. The second detection terminal is disposed at the end of the second insulating portion away from the insulating main body. The extension length of the first insulating portion is greater than the extension length of the second insulating portion, so that the first detection terminal and the second detection terminal are at least partially offset from each other in the first direction.

4. The refrigerator according to claim 3, characterized in that, The extension length of the first detection terminal is greater than the extension length of the second detection terminal, so that the bottom of the first detection terminal and the bottom of the second detection terminal are offset from each other in the first direction.

5. The refrigerator according to claim 1 or 2, characterized in that, At least one of the first detection terminal and the second detection terminal has its bottom end bent away from the other; and / or, In the second direction, the minimum distance between the first detection terminal and the second detection terminal is 1mm-10mm.

6. The refrigerator according to claim 1 or 2, characterized in that, The box has a receiving chamber. The kettle, the water filling mechanism, and the water receiving structure are all located on the same side of the door. When the door is rotated to close the receiving chamber, the kettle, the water filling mechanism, and the water receiving structure are all located in the receiving chamber.

7. The refrigerator according to claim 1 or 2, characterized in that, The refrigerator also includes: A placement platform is provided with a positioning groove. An overflow port extending in a third direction is provided on the side wall of the positioning groove. The overflow port is connected to the positioning groove and the water receiving structure. In the first direction of the box, the water receiving structure is located below the placement platform. The positioning groove is at least used to accommodate the bottom of the kettle to position the kettle. Wherein, the second direction is the width direction of the box, the third direction is the depth direction of the box, and the width direction is perpendicular to the depth direction.

8. The refrigerator according to claim 7, characterized in that, The bottom of the kettle is provided with a locking structure extending in the third direction. When the kettle is placed in the positioning groove, the locking structure extends at least partially into the overflow port. The side wall of the placement platform with the overflow port has an upper edge that is arranged opposite to the bottom of the positioning groove. The locking structure and the upper edge are fitted with a clearance to fix the kettle.

9. A refrigerator characterized by comprising: The refrigerator includes: Box; A door body, which is rotatably connected to the housing; A kettle, which is detachably mounted on the door; A water injection mechanism is provided on the door body, and the water injection mechanism is used to inject water into the kettle when the kettle is in a preset position on the door body; A water receiving structure is provided on the door body and located below the kettle along a first direction, the water receiving structure being used to receive water overflowing from the kettle; An overflow sensor is installed in the door body and located in the water receiving structure. The overflow sensor is used to detect the water level in the water receiving structure. The water injection mechanism is also used to stop injecting water into the kettle when the overflow sensor detects that the liquid level in the water receiving structure has reached a preset liquid level. The overflow sensor includes: A first detection terminal, the first detection terminal extending along the first direction; The second detection terminal is spaced apart from the first detection terminal in a second direction, the second detection terminal extends along the first direction, and the first detection terminal and the second detection terminal are at least partially offset from each other in the first direction. Wherein, the first direction is the height direction of the box, and the second direction is perpendicular to the height direction.

10. A refrigerator characterized by comprising: The refrigerator includes: Box; A door body, which is rotatably connected to the housing; A kettle, which is detachably mounted on the door; A water injection mechanism is provided on the door body, and the water injection mechanism is used to inject water into the kettle when the kettle is in a preset position on the door body; A water receiving structure is provided on the door body and located below the kettle along a first direction, the water receiving structure being used to receive water overflowing from the kettle; An overflow sensor is installed in the door body and located in the water receiving structure. The overflow sensor is used to detect the water level in the water receiving structure. The water injection mechanism is also used to stop injecting water into the kettle when the overflow sensor detects that the liquid level in the water receiving structure has reached a preset liquid level. The overflow sensor includes: Insulating main body; A first detection terminal is disposed on the insulating main body portion, and in a second direction, the first detection terminal is located on one side of the insulating main body portion; The second detection terminal is disposed on the insulating main body. In the second direction, the second detection terminal is located on the other side of the insulating main body. The first detection terminal and the second detection terminal extend in a direction away from each other. Wherein, the first direction is the height direction of the box, and the second direction is perpendicular to the height direction.

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