Liquid level probe assembly, liquid tank and apparatus comprising a liquid tank

Abstract

The application discloses a liquid level probe assembly, a liquid tank and an equipment comprising the liquid tank. The liquid level probe assembly comprises a plurality of liquid level probes, each liquid level probe comprising a connecting portion and a detecting portion, wherein the detecting end of the detecting portion of at least one liquid level probe among the plurality of liquid level probes is in a bent structure. The liquid level probe assembly of the embodiment of the application has the detecting end of the detecting portion of at least one liquid level probe among the plurality of liquid level probes in a bent structure, so that the sensing area of the at least one liquid level probe for liquid level detection is the area defined by the bent structure, thereby increasing the sensing area of the at least one liquid level probe, and the corresponding liquid level height can still be accurately detected when the liquid surface is unstable, for example, when tilting occurs, so that liquid level early warning false positives are prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquid level detection, and in particular to a liquid level probe assembly, a liquid tank and an apparatus comprising the liquid tank. BACKGROUND

[0002] In an application scenario using a liquid tank, the liquid level height in the liquid tank is detected to perform corresponding operations according to the liquid level height, for example, a warning is given when the liquid level in the liquid tank is too high or too low, so that the injection of liquid into the liquid tank can be stopped when the liquid level height is too high, and the liquid tank can be supplemented with liquid when the liquid level height is too low. The liquid contained in the liquid tank can be water, oil, coolant, etc.

[0003] In related technologies, a set of liquid level probes is used to detect a preset liquid level height. The set of liquid level probes generally includes two vertical liquid level probes. When the liquid surface is higher than the bottom of the two probes, the two probes are conducted by the liquid, and no alarm is given. When the liquid surface is lower than the bottom of the two probes, the two probes are not conducted, and an alarm is given, that is, the liquid level in the tank is lower than the preset liquid level height. SUMMARY

[0004] The present application provides a liquid level probe assembly, a liquid tank and an apparatus comprising the liquid tank, which can prevent false alarms of liquid level warning.

[0005] In a first aspect, the present application provides a liquid level probe assembly, comprising: a plurality of liquid level probes, each liquid level probe comprising a connecting portion and a detection portion, wherein the detection end of the detection portion of at least one liquid level probe in the plurality of liquid level probes is a bent structure.

[0006] In the liquid level probe assembly of the present application, the detection end of the detection portion of at least one liquid level probe in the plurality of liquid level probes is set as a bent structure, so that the sensing area of at least one liquid level probe for liquid level detection is the area defined by the bent structure, thereby increasing the sensing area of at least one liquid level probe, and when the liquid surface is unstable, for example, when it is tilted, the corresponding liquid level height can still be accurately detected, preventing false alarms of liquid level warning.

[0007] In some embodiments, the bent structure is located in the same plane, so that the entire bent structure is used to detect the same liquid level, improving the accuracy of the detection result.

[0008] In some embodiments, the bent structure is a ring shape with an opening or a closed ring shape. The ring structure is simple, easy to process, and has a larger defined sensing area, which can further improve the accuracy of liquid level detection and prevent false alarms of liquid level warning.

[0009] In some embodiments, the bending structure is rectangular, circular or polygonal. The ring shape is a regular structure, which further simplifies the manufacturing process and reduces the cost.

[0010] In some embodiments, the detection ends of the plurality of liquid level probes are all in a bending structure, and the detection ends of the plurality of liquid level probes are all in the same plane. By setting the detection ends of the plurality of liquid level probes in a bending structure, the sensing area of each liquid level probe can be increased, and the accuracy of the detection result can be improved, preventing false alarms of liquid level warning when the liquid surface is unstable, such as when tilting occurs.

[0011] In some embodiments, the detection ends of the plurality of liquid level probes are in different planes, and the plurality of liquid level probes include a first liquid level probe and at least one second liquid level probe, the detection part of the first liquid level probe is in a straight line, and the length of the detection part of the first liquid level probe is greater than the length of the detection part of any second liquid level probe. Since the first liquid level probe with a longer detection part can extend into the bottom of the liquid tank, setting the detection part of the first liquid level probe in a straight line can simplify the structure of the liquid level probe assembly, reduce the cost, and will not affect the accuracy of detection.

[0012] In some embodiments, the detection ends of the at least one second liquid level probe are all in the same plane. Thus, the detection ends of the at least one second liquid level probe are in the same plane, which can achieve detection of the same liquid level and further improve detection accuracy.

[0013] In some embodiments, the detection ends of the plurality of liquid level probes are in different planes, and the detection ends of the plurality of liquid level probes are all in a bending structure. By setting the detection ends of the plurality of liquid level probes in a bending structure and in different planes, it can be prevented that any liquid level probe causes false alarms of liquid level warning.

[0014] In some embodiments, a side-opened guide frame is further included, the bottom of the guide frame has a plurality of first mounting holes, and the connecting ends of the connecting parts of the plurality of liquid level probes pass through the corresponding first mounting holes and are located in the guide frame. By setting the guide frame to assemble the connecting parts of the plurality of liquid level probes together, the connection between the external detection unit and the connecting ends of the plurality of liquid level probes can be achieved by plug-in connection, and the guide frame can also protect the connecting ends of the plurality of liquid level probes. In addition, by setting the one-to-one corresponding first mounting holes, the insulation between the liquid level probes can be achieved, and each detection of the preset liquid level is not affected.

[0015] In a second aspect, the present application provides a liquid tank, comprising: a tank body configured to contain liquid; and the liquid level probe assembly in the above embodiments, wherein the liquid level probe assembly is mounted on the tank body, and the detection portions of the plurality of liquid level probes of the liquid level probe assembly are located in the tank body.

[0016] In some embodiments, when the bending structure is located in the same plane, the plane in which the bending structure is located is parallel to the bottom surface of the tank body, so that the detection of a preset liquid level can be achieved through the entire bending structure, and the detection accuracy is improved.

[0017] In some embodiments, the bending structure extends along the side wall of the tank body. By arranging the bending portion to extend along the side wall of the tank body, the problem that the probe cannot achieve detection even if the liquid tank is slightly tilted can be overcome, and the detection accuracy is improved.

[0018] In some embodiments, the connecting portion and the detection portion of each liquid level probe form an L-shaped structure. By arranging the connecting portion and the detection portion of the plurality of liquid level probes to form an L-shaped structure, the liquid level probe can be conveniently mounted on the tank body, and the detection portion can be extended into the tank body.

[0019] In some embodiments, the side wall of the tank body has a second mounting hole, the guide frame of the liquid level probe assembly passes through the second mounting hole, and at least a portion of the guide frame is located outside the tank body. By arranging the second mounting hole on the tank body, the connecting end of the liquid level probe can be located outside the liquid tank, and the detection portion can be located inside the liquid tank, so that the external detection unit can be connected to the connecting end.

[0020] In a third aspect, the present application provides an apparatus comprising a liquid tank, wherein the liquid tank is the liquid tank in the above embodiments.

[0021] In some embodiments, the liquid tank comprises a tilted working state.

[0022] The above description is only a summary of the technical solutions of the present application. In order to enable the technical means of the present application to be more clearly understood, and to be implemented according to the content of the description, and in order to enable the above and other purposes, characteristics and advantages of the present application to be more apparent and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0023] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a better understanding of the preferred embodiments, and are not to be considered as limitations on the present application. Moreover, in all the drawings, like reference numerals refer to the same or similar components. In the drawings:

[0024] Figure 1 Perspective view of a liquid tank for some embodiments of the present application;

[0025] Figure 2 Perspective view of a liquid tank for some embodiments of the present application; Figure 1 Structure diagram of a set of liquid level probes in a liquid tank;

[0026] Figure 3 Structure diagram of a set of liquid level probes in a liquid level probe assembly for some embodiments of the present application;

[0027] Figure 4 Structure diagram of a set of liquid level probes in a liquid level probe assembly for some embodiments of the present application; Figure 3 Top view of a liquid level probe assembly for some embodiments of the present application;

[0028] Figure 5 Right view of a liquid level probe assembly for some embodiments of the present application; Figure 3 Left view of a liquid level probe assembly for some embodiments of the present application;

[0029] Figure 6 Structure diagram of a set of liquid level probes in a liquid level probe assembly for some embodiments of the present application; Figure 3 Top view of a liquid level probe assembly for some embodiments of the present application;

[0030] Figure 7 Structure diagram of a set of liquid level probes in a liquid level probe assembly for some embodiments of the present application;

[0031] Figure 8 Top view of a liquid level probe assembly for some embodiments of the present application; Figure 7

[0032] Structure diagram of a set of liquid level probes in a liquid level probe assembly for some embodiments of the present application; Figure 9

[0033] Structure diagram of a set of liquid level probes in a liquid level probe assembly for some embodiments of the present application; Figure 10a Figure 10b Working diagram of a liquid level probe assembly for some embodiments of the present application in a tilted state of a liquid tank;

[0034] Figure 11 Structure diagram of a set of liquid level probes in a liquid level probe assembly for some embodiments of the present application;

[0035] Figure 12 Perspective view of a liquid tank for some embodiments of the present application;

[0036] Figure 13 Structure diagram of a liquid tank for some embodiments of the present application.

[0037] Reference signs in the detailed description of the embodiments are as follows:

[0038] Liquid tank 100, tank body 101, guide frame 102, bending structure 200, liquid surface 300;

[0039] A set of liquid level probes 10, liquid level probes 11, 12;

[0040] ​a plurality of level probes 20, level probes 21, 22, 23, 24, 25, a first level probe 31, a second level probe 32, 33. DETAILED DESCRIPTION

[0041] The embodiments of the present application will be described in detail below with reference to the drawings. The following examples are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, but cannot be used to limit the protection scope of the present application.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification herein is for describing particular embodiments only and is not intended to be limiting of the application; the use herein of terms such as "comprise" and "comprising", and "have" and "having", and any variations thereof, is intended to cover the inclusion but not the exclusion of any feature, limitation, or number of limitations.

[0043] In the description of the embodiments of the present application, the technical terms "first", "second", and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "plurality" is two or more, unless otherwise explicitly and specifically limited.

[0044] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. The skilled person in the art explicitly and implicitly understands that the embodiments described herein can be combined with other embodiments.

[0045] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0046] In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0047] In the description of the embodiments of the present application, the orientations or positional relationships indicated by the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0048] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0049] In the application scenario of using a liquid tank, the liquid level height in the liquid tank is detected to perform corresponding operations according to the liquid level height. For example, when the liquid level in the liquid tank is too high or too low, a warning is given, so that the injection of liquid into the liquid tank can be stopped when the liquid level is too high, and the liquid tank can be supplied with liquid when the liquid level is too low. The liquid contained in the liquid tank can be water, oil, coolant, etc.

[0050] The present inventors have noticed that, with reference to Figure 1 and Figure 2 , a set of liquid level probes 10 can be used to detect the liquid surface position (referred to as "liquid level") of a preset height to give a warning to the liquid level and perform corresponding operations. The set of liquid level probes 10 can include two liquid level probes 11 and 12. When the liquid surface in the liquid tank 10 is higher than the detection ends (corresponding to the lowermost ends of the detection parts of the liquid level probes) of the two liquid level probes 11 and 12, the two liquid level probes 11 and 12 are conducted by the liquid, and no alarm is given; when the liquid surface in the liquid tank 100 is lower than the detection ends of the two liquid level probes 11 and 12, the two liquid level probes 11 and 12 are not conducted, and an alarm is given, i.e. the liquid level in the liquid tank is lower than the detection ends of the two liquid level probes 11 and 12.

[0051] When the detection part lengths of the two liquid level probes 11 and 12 are the same, i.e., the heights of the detection ends of the two liquid level probes 11 and 12 relative to the bottom surface of the liquid tank 100 are the same, the preset height of the liquid level that the set of liquid level probes 10 can detect is the height of the detection end of the two liquid level probes 11 and 12 relative to the bottom surface of the liquid tank 100. When the detection part lengths of the two liquid level probes 11 and 12 are different, i.e., the heights of the detection ends of the two liquid level probes 11 and 12 relative to the bottom surface of the liquid tank 100 are different, the preset height of the liquid level that the set of liquid level probes 10 can detect is the greater one of the heights of the detection ends of the two liquid level probes 11 and 12 relative to the bottom surface of the liquid tank 100.

[0052] The inventors further noticed that the liquid level probe is usually arranged close to one side of the liquid tank. In some application scenarios, the liquid surface in the liquid tank is unstable, e.g., tilting occurs. In this case, the liquid level probe arranged close to one side of the liquid tank can only sense the liquid surface position on the side, and the unstable liquid surface can cause the liquid level probe to fail to accurately detect the liquid level to prewarn the liquid level of the preset height. For example, for the liquid level of the preset height, when the liquid tank does not tilt, the detection end of the liquid level probe is in contact with the liquid surface, and if the liquid tank tilts, the detection end of the liquid level probe can be located above the liquid surface on the side, thereby failing to accurately detect the liquid level of the preset height.

[0053] Based on this, the inventors creatively designed a liquid level probe assembly, which includes a plurality of liquid level probes, each liquid level probe including a connecting part and a detection part, wherein the detection end of the detection part of at least one liquid level probe in the plurality of liquid level probes is a bent structure.

[0054] In such a liquid level probe assembly, by arranging the detection end of at least one liquid level probe of the liquid level probe assembly to be a bent structure, the sensing area of the at least one liquid level probe for realizing liquid level detection is the area defined by the bent structure, thereby being able to increase the sensing area of the at least one liquid level probe, and still being able to accurately detect the corresponding liquid level height when the liquid surface is unstable, e.g., tilting occurs, to prevent false positives of liquid level prewarning.

[0055] The liquid level probe assembly disclosed in the embodiments of the present application can be used in, but is not limited to, devices including a liquid tank, such as vehicles, airplanes, ships, coffee machines, humidifiers, or direct drinking machines. The liquid supply system of the device can be composed of the liquid level probe assembly, the liquid tank, the controller, the actuator, etc. disclosed in the present application, thereby being able to ensure the accuracy of liquid level detection when the liquid surface is unstable, e.g., tilting occurs, to prevent false positives of liquid level prewarning and improve the working performance of the device.

[0056] Figure 3 A structural schematic diagram of the plurality of liquid level probes 20 of the liquid level probe assembly of some embodiments of the present application, Figure 4 A structural schematic diagram of the plurality of liquid level probes 20 of the liquid level probe assembly of some embodiments of the present application, Figure 3a top view of Figure 5 is Figure 3 a right view of Figure 6 is Figure 3 a left view of

[0057] Figure 7 a structural schematic diagram of multiple liquid level probes 20 of a liquid level probe assembly according to some embodiments of the present application, Figure 8 is Figure 7 a top view of

[0058] Figure 9 a structural schematic diagram of multiple liquid level probes 20 of a liquid level probe assembly according to some embodiments of the present application.

[0059] According to some embodiments of the present application, referring to Figures 3 to 9 , the present application provides a liquid level probe assembly, which comprises multiple liquid level probes 20, each of which comprises a connecting portion and a detecting portion, wherein the detecting end of the detecting portion of at least one of the multiple liquid level probes 20 is in a bent structure 200.

[0060] The liquid level probe comprises a detecting portion and a connecting portion. The detecting portion is used to contact with liquid and has conductivity. The connecting portion is used to electrically connect with a detecting unit, which is used to collect the electrical signal detected by the detecting portion to determine the height of the liquid level. In some embodiments, two liquid level probes can be used to detect the liquid level. By using the conductivity of liquid, when the lowermost ends (i.e. the detecting ends) of the detecting portions of the two liquid level probes are both below the liquid surface, the two liquid level probes are in conduction; and when at least one of the lowermost ends (i.e. the detecting ends) of the detecting portions of the two liquid level probes is above the liquid surface, the two liquid level probes are in disconnection. Thus, by determining whether the two liquid level probes are in conduction or in disconnection, the detection of the liquid level can be realized. Such detection method is extremely stable, easy to install, has long service life and high protection level.

[0061] Since the detection of the liquid level is realized by using the conductivity of the detecting portion of the liquid level probe, the material of the detecting portion is a conductive material, for example, but not limited to, stainless steel.

[0062] In some embodiments, the lengths of the detecting portions of the two liquid level probes can be the same or different. It can be understood that when the lengths of the two liquid level probes are the same, the detectable liquid surface height depends on the length of the detecting portion of the two liquid level probes. And when the lengths of the detecting portions of the two liquid level probes are different, the detectable liquid surface height depends on the smaller one of the lengths of the detecting portions of the two liquid level probes. Because the longer the detecting portion is, the lower the lowermost end of the liquid level probe is after being installed on the liquid tank, and the shorter the detecting portion is, the higher the lowermost end of the liquid level probe is after being installed on the liquid tank.

[0063] It should be noted that the "height" mentioned in the embodiments of the present application refers to the height relative to the bottom surface of the liquid tank, and the bottom surface of the liquid tank is opposite to the liquid surface in the liquid tank. The orientation "lower" refers to the side close to the bottom surface of the liquid tank. The "multiple" mentioned in the embodiments of the present application includes two and more than two.

[0064] When three or more liquid level probes are used to detect the liquid level, the detection principle is similar to that of the two liquid level probes described above.

[0065] The liquid level probe assembly can include two or more liquid level probes, and can realize detection of one or more preset liquid levels. For example, in Figure 3 and Figure 7 In the illustrative example, the liquid level probe assembly includes two liquid level probes 21 and 22, and detection of one preset liquid level can be realized by detecting the conduction or disconnection of the two liquid level probes 21 and 22. In Figure 9 the illustrative example, the liquid level probe assembly includes five liquid level probes 21, 22, 23, 24 and 25, and detection of multiple preset liquid levels can be realized. For example, the liquid level probe 21 and the liquid level probe 22 can realize detection of one preset liquid level, the liquid level probe 21 and the liquid level probe 23 can realize detection of another preset liquid level, the liquid level probe 21 and the liquid level probe 24 can realize detection of another preset liquid level, and the liquid level probe 21 and the liquid level probe 25 can realize detection of another preset liquid level.

[0066] It should be noted that when the liquid level probe assembly includes three or more liquid level probes, detection of the same liquid level can also be realized. For example, the lengths of the detection portions of all the liquid level probes of the liquid level probe assembly are the same. For another example, the detection portions of the multiple liquid level probes included in the liquid level probe assembly have two lengths, and the detectable liquid surface height depends on the length of the shorter detection portion.

[0067] In some embodiments, at least one liquid level probe of the multiple liquid level probes 20 can include all or part of the multiple liquid level probes 20. That is, the detection end of the detection portion of each of the multiple liquid level probes 20 can be provided as the bent structure 200, and the lengths of the detection portions of the multiple liquid level probes 20 can be completely the same or not completely the same. The detection end of the detection portion of a part of the liquid level probes (one or more liquid level probes) of the multiple liquid level probes 20 can also be provided as the bent structure 200, and the detection portions of the other part of the liquid level probes are straight, and the length of the detection portion of the part of the liquid level probes is not greater than the length of the detection portion of any one of the other part of the liquid level probes.

[0068] The longer the detection part of the liquid level probe, the closer the detection end of the liquid level probe to the bottom surface of the liquid tank after being installed on the liquid tank, and the less the influence of the liquid level probe assembly on the detection of the liquid level, and the liquid level height detected by the liquid level probe assembly depends on the shorter detection part of the liquid level probe. Therefore, when the detection part of the liquid level probe is longer, the detection part of the liquid level probe can be set as a straight line type. When the detection part of the liquid level probe is shorter, the detection end of the detection part of the liquid level probe can be set as a bending structure to increase the sensing area and improve the accuracy of the detection result, and prevent the problem of false alarm of liquid level warning caused by unstable liquid surface.

[0069] For example, the liquid level probe assembly includes two liquid level probes, and the detection end of the detection part of each liquid level probe is a bending structure 200. Figures 3 to 8 The detection end of the detection part of each liquid level probe can be a bending structure 200, and the length of the detection part of each liquid level probe can be the same or different. Alternatively, only the detection end of the detection part of one liquid level probe can be a bending structure, and the detection part of the other liquid level probe can be a straight line type, and the length of the detection part of the one liquid level probe is not greater than the length of the detection part of the other liquid level probe.

[0070] It should be noted that the length of the detection part of the liquid level probe refers to the extension length of the detection part in the direction perpendicular to the bottom surface of the liquid tank after being installed on the liquid tank.

[0071] For example, the liquid level probe assembly includes two liquid level probes, and the detection end of the detection part of each liquid level probe is a bending structure 200. Figure 10a And 10b For example, by setting the detection end of the detection part of each liquid level probe of the liquid level probe assembly as a bending structure 200, even when the liquid tank 100 is tilted, the liquid level can still be accurately detected, and the principle is as follows:

[0072] As shown in Figure 10a When the liquid tank 100 is not tilted, the height of the detection end of each liquid level probe (only one liquid level probe 21 is shown in the figure) is flush with the liquid surface 300, and both liquid level probes are conductive. At this time, if the liquid tank 100 is tilted, as shown in Figure 10b Although part of the liquid level probe is above the liquid surface 300, another part is below the liquid surface 300, both liquid level probes are still conductive, so that the liquid level detection can still be accurately realized.

[0073] The liquid level probe assembly can further include a liquid level probe cap, a connecting structure, etc. The liquid level probe cap is sleeved on the liquid level probe cap, and the connecting structure is used to install the liquid level probe assembly on the liquid tank.

[0074] By setting the detection end of the detection part of at least one of the plurality of liquid level probes 20 as a bending structure 200, the sensing area of the at least one liquid level probe for realizing liquid level detection is the area defined by the bending structure 200, so that the sensing area of the at least one liquid level probe can be increased, and the corresponding liquid level height can still be accurately detected when the liquid surface is unstable, for example, when tilting occurs, to prevent false alarms of liquid level warning.

[0075] According to some embodiments of the present application, optionally, the bending structure 200 is located in the same plane.

[0076] The bending structure 200 located in the same plane can realize that the entire bending structure 200 is used for detecting the liquid level of the same preset height, and the area of the sensing area is increased.

[0077] In such a design, since the bending structure 200 of the liquid level probe is located in the same plane, the design difficulty can be simplified, and the detection accuracy is improved.

[0078] According to some embodiments of the present application, optionally, the shape of the bending structure 200 is a ring shape with an opening or a closed ring shape.

[0079] Referring to Figures 3 to 6 and Figure 9 , by setting the shape of the bending structure 200 as a ring shape with an opening, it is beneficial to realize that the detection parts of the liquid level probes are spaced apart from each other by a certain distance to realize insulation.

[0080] By reasonably setting the position and layout mode of the liquid level probe, a closed ring-shaped bending structure 200 can also be realized, and insulation between adjacent liquid level probes is ensured, referring to Figure 7 and Figure 8 .

[0081] The ring-shaped bending structure 200 has a simple structure, and the sensing area of the bending structure 200 as a detection end is the area defined by the ring shape, realizing a larger sensing area and reducing costs.

[0082] According to some embodiments of the present application, optionally, the bending structure 200 can be a rectangular ring, a circular ring, a polygonal ring, etc.

[0083] Figures 3 to 9 The bending structure 200 shown is a rectangular ring. It can be understood that the specific shape of the bending structure 200 can be designed according to the applied liquid tank 100, which is not limited here.

[0084] The ring is a regular structure, which further simplifies the manufacturing process and reduces costs.

[0085] According to some embodiments of the present application, optionally, referring to Figures 3 to 8As shown, the detection ends of the plurality of liquid level probes 20 are all in a bent structure 200, and the detection ends of the plurality of liquid level probes 20 are all located in the same plane.

[0086] The bent structures 200 of the plurality of liquid level probes 20 can be completely identical or not completely identical. Figures 3 to 8 In the example shown, the bent structures 200 of the plurality of liquid level probes 20 are completely identical, and are either all rectangular annular rings with openings or all rectangular annular rings without openings. It can be understood that a part of the bent structures 200 of the plurality of liquid level probes 20 can be all rectangular annular rings with openings, and the other part of the bent structures 200 of the plurality of liquid level probes 20 can be all rectangular annular rings without openings. It should be noted that this is only an example to illustrate that the bent structures 200 of the plurality of liquid level probes 20 can be completely identical or not completely identical, and does not limit that the completely identical or not completely identical bent structures 200 of the plurality of liquid level probes 20 can only be achieved in the above manner. In other words, the shape of the bent structure 200 is not limited to an annular ring, for example, it can also be S-shaped.

[0087] When the detection ends of the plurality of liquid level probes 20 are all located in the same plane, the detection result of the liquid level probe assembly will be affected by each liquid level probe. Therefore, by setting the detection ends of the plurality of liquid level probes 20 to be the bent structure 200, the sensing area of each liquid level probe can be increased, the accuracy of the detection result can be improved, and false positives of the liquid level warning can be prevented when the liquid surface 300 is unstable, for example, when the liquid surface 300 is tilted.

[0088] The detection ends of the plurality of liquid level probes 20 being all located in the same plane can mean that after the liquid level probe assembly is installed on the liquid tank 100, the detection ends of the plurality of liquid level probes 20 are all located in the same plane, so that the detection of a preset height of the liquid level can be achieved.

[0089] By setting the detection ends of the plurality of liquid level probes 20 to be all located in the same plane and the detection ends of the plurality of liquid level probes 20 to be the bent structure 200, the accuracy of the detection result can be improved, and false positives of the liquid level warning can be prevented.

[0090] According to some embodiments of the present application, optionally, referring to Figure 11 , the detection ends of the plurality of liquid level probes 20 are located in different planes, and the plurality of liquid level probes 20 include a first liquid level probe 31 and at least one second liquid level probe 32, 33, the detection part of the first liquid level probe 31 is a straight line, and the length of the detection part of the first liquid level probe 31 is greater than the length of the detection part of any second liquid level probe 32, 33.

[0091] The detection ends of the plurality of liquid level probes 20 can be located in different planes, which means that after the liquid level probe assembly is installed on the liquid tank 100, the detection ends of the plurality of liquid level probes 20 are located in different planes, so that the detection of the liquid level at one or more preset heights can be realized.

[0092] In the case where the length of the detection part of the first liquid level probe 31 is greater than the length of the detection part of any second liquid level probe 32, 33, the detection part of the first liquid level probe 31 can be set as a straight line type. Because after the liquid level probe assembly is installed on the liquid tank 100, the detection part of the first liquid level probe 31 extends the deepest into the liquid tank 100, that is, the height of the detection end of the detection part of the first liquid level probe 31 relative to the bottom surface of the liquid tank 100 is the smallest, and the liquid level height that can be detected by the liquid level probe assembly is not affected by the first liquid level probe 31, so the detection part of the first liquid level probe 31 can be set as a straight line type to simplify the structure of the liquid level probe assembly and reduce the cost.

[0093] The length of the detection part of the first liquid level probe 31 being greater than the length of the detection part of any second liquid level probe 32, 33 can mean that when the liquid level height corresponds to the height of the detection end of the detection part of any second liquid level probe 32, 33, in the case where the liquid level is unstable, for example, the liquid level tilts due to the inclination of the liquid tank, the detection end of the detection part of the first liquid level probe 31 is also below the liquid level, and is not affected by the instability of the liquid level.

[0094] Because the first liquid level probe 31 with a longer detection part can extend into the bottom of the liquid tank, setting the detection part of the first liquid level probe 31 as a straight line type can simplify the structure of the liquid level probe assembly, reduce the cost, and will not affect the accuracy of detection.

[0095] According to some embodiments of the present application, optionally, referring to Figure 11 , the detection ends of the at least one second liquid level probe 32, 33 are all located in the same plane.

[0096] As described above, when the detection ends of the at least one second liquid level probe 32, 33 are all located in the same plane, the liquid level probe assembly can realize the detection of the liquid level at one preset height. The detection ends of part or all of the at least one second liquid level probe 32, 33 are in a bent structure 200.

[0097] Referring to Figure 11For example, the liquid level probe assembly includes one first liquid level probe 31 and two second liquid level probes 32, 33, wherein the detection ends of the two second liquid level probes 32, 33 are in the same plane and are in the form of concentric rectangular rings. It should be noted that the form of the detection ends of the two second liquid level probes 32, 33 being in the same plane is not limited to the form shown in FIG. 8B, and the detection ends of the two second liquid level probes 32, 33 can also be in the form of concentric rectangular rings of different sizes. Figure 11 For example, the detection ends of the two second liquid level probes can also be rectangular rings of the same size and arranged side by side. Figure 11 For example, the detection ends of the two second liquid level probes can also be rectangular rings of the same size and arranged side by side.

[0098] It can be understood that the detection ends of the at least one second liquid level probe can also be in different planes to detect liquid levels of different preset heights. For example, the liquid level probe assembly includes two second liquid level probes, and the detection ends of the two second liquid level probes can also be in different planes. In this case, one of the second liquid level probes can cooperate with the first liquid level probe to detect a liquid level of a preset height, and the other second liquid level probe can cooperate with the first liquid level probe to detect a liquid level of another preset height.

[0099] Since the first liquid level probe 31 with a longer detection part can extend into the bottom of the liquid tank 100, the detection part of the first liquid level probe 31 is arranged in a straight line type, which can simplify the structure of the liquid level probe assembly, reduce the cost, and will not affect the accuracy of detection.

[0100] According to some embodiments of the present application, the detection ends of the plurality of liquid level probes are in different planes, and the detection ends of the plurality of liquid level probes are in the form of a bent structure.

[0101] For example, the plurality of liquid level probes includes two liquid level probes, the detection ends of the two liquid level probes are in the form of a bent structure, and the detection ends of the two liquid level probes are in different planes.

[0102] By arranging the detection ends of the plurality of liquid level probes in the form of a bent structure and in different planes, the sensing area of each liquid level probe can be increased, and false positives of liquid level warnings caused by any liquid level probe can be prevented.

[0103] According to some embodiments of the present application, the detection ends of the plurality of liquid level probes are in different planes, and the detection ends of the plurality of liquid level probes are in the form of a bent structure. Figure 12 and 13As shown, the connecting structure of the liquid level probe assembly is a guiding frame 102 with one side open. The bottom of the guiding frame 102 has a plurality of first mounting holes. The connecting ends of the connecting portions of the plurality of liquid level probes 20 pass through the corresponding first mounting holes and are located in the guiding frame 102.

[0104] In some embodiments, the liquid level probe assembly is mounted on the tank by passing through the mounting holes on the side wall of the tank. Optionally, the external detection unit can be connected to the detection portion of the liquid level probe in a plug-in manner. The guiding frame can guide the plugging and facilitate the connection.

[0105] In some embodiments, the guiding frame 102 is a hollow structure with one side open. The bottom of the guiding frame 102 has a plurality of first mounting holes. The plurality of liquid level probes 20 pass through the corresponding first mounting holes and are fixed on the guiding frame 102. A sealing structure can be formed between the liquid level probe and the first mounting hole through the probe silica gel plug to ensure that there is no gap between the mounting hole and the liquid level probe, achieving a sealing effect. The guiding frame 102 also has a guiding effect, which can facilitate the connection of the detection unit to the liquid level probe assembly in a plug-in manner. In addition, the guiding frame 102 can also protect the connecting portion of the liquid level probe.

[0106] By assembling the connecting portions of the plurality of liquid level probes 20 together through the guiding frame 102, the connection of the external detection unit to the connecting ends of the plurality of liquid level probes 20 in a plug-in manner is facilitated. The guiding frame 102 can also protect the connecting ends of the plurality of liquid level probes 20.

[0107] Figure 12 A perspective view of a liquid tank according to some embodiments of the present application, Figure 13 A structural schematic view of a liquid tank according to some embodiments of the present application.

[0108] According to some embodiments of the present application, with reference to Figures 12 to 13 The present application provides a liquid tank 100, which comprises a tank body and the liquid level probe assembly in the above embodiments. The tank body 101 is configured to contain liquid. The liquid level probe assembly is mounted on the tank body 101. The detection portions of the plurality of liquid level probes 20 of the liquid level probe assembly are located in the tank body 101.

[0109] The liquid tank 100 with the liquid level probe assembly can realize liquid level warning. In some embodiments, the installation positions of the plurality of liquid level probes 20 are the same, and the installation positions of the plurality of liquid level probes 20 are arranged in a direction parallel to the bottom surface of the tank body 101. Thus, the longer the detection portion of the liquid level probe, the smaller the height of the detection end of the detection portion relative to the same bottom surface. Conversely, the shorter the detection portion of the liquid level probe, the greater the height of the detection end of the detection portion relative to the same bottom surface.

[0110] By adopting the liquid level probe assembly in the scheme, since the detection end of the detection part of the at least one liquid level probe of the liquid level probe assembly is in a bent structure, the sensing area of the at least one liquid level probe for liquid level detection corresponds to the area defined by the bent structure, so that the sensing area of the at least one liquid level probe can be increased, and when the liquid surface is unstable, for example, when tilting occurs, the corresponding liquid level height can be accurately detected, and false positives of liquid level warning can be prevented.

[0111] According to some embodiments of the present application, optionally, the bent structure 200 is located in the same plane, in which case the plane in which the bent structure 200 is located can be arranged to be parallel to the bottom surface of the tank.

[0112] The detection end of the liquid level probe is located at the lowermost end of the liquid level probe, and whether the detection end of the liquid level probe is below the liquid surface determines whether the liquid level probes are connected or disconnected, thereby achieving detection of the liquid level.

[0113] By arranging the detection end to be in the bent structure 200 located in the same plane, and the plane in which the bent structure 200 is located is parallel to the bottom surface of the tank, the entire bent structure 200 can achieve detection of a liquid level of a preset height, improving detection accuracy.

[0114] In such a design, the entire bent structure 200 can achieve detection of a liquid level of a preset height, and detection accuracy can be improved.

[0115] According to some embodiments of the present application, optionally, the bent structure 200 extends along the side wall of the tank.

[0116] The bent structure 200 extending along the side wall of the tank means that the bent structure 200 is arranged around the side wall of the tank inside the tank. Since the liquid level 300 changes most in height near the side wall when the liquid tank 100 is tilted, the bent structure 200 arranged around the side wall of the tank inside the tank can better sense the liquid level 300 on the side with higher height when the liquid tank 100 is tilted, avoiding problems of liquid level mis-detection that can be caused by tilting of the liquid tank 100.

[0117] In some embodiments, the bent structure 200 can have an open ring shape or a closed ring shape, which is simple in structure and easy to implement.

[0118] By arranging the bent structure 200 to extend along the side wall of the tank, even if the liquid tank 100 is slightly tilted, the problem that the probe cannot achieve detection can be overcome, and detection accuracy can be improved.

[0119] According to some embodiments of the present application, optionally, the connecting part and the detection part of each liquid level probe form an L-shaped structure.

[0120] The connection part and the detection part of each liquid level probe form an L-shaped structure, which means that the included angle between the connection part and the detection part is greater than 0° and less than 180°. Optionally, the included angle is 60°-150°, for example, 60°, 90°, 120°, etc.

[0121] By setting the connection part and the detection part of the plurality of liquid level probes 20 to form an L-shaped structure, the liquid level probes can be conveniently mounted on the tank, and the connection part extends into the tank.

[0122] According to some embodiments of the present application, the liquid level assembly optionally comprises a guide frame 102 with one side open, and the bottom of the guide frame 102 has a plurality of first mounting holes, and the connection end of the connection part of the plurality of liquid level probes 20 passes through a corresponding first mounting hole to be located in the guide frame 102. In this case, the side wall of the tank is provided with a second mounting hole, and the guide frame 102 of the liquid level probe assembly passes through the second mounting hole, and at least a part of the guide frame 102 is located outside the tank.

[0123] According to some embodiments, a sealing structure is formed between the connection part and the first mounting hole through the probe silica gel plug, so as to ensure that there is no gap between the mounting hole and the liquid level probe, and a sealing effect is achieved.

[0124] In some embodiments, the liquid level probe is mounted on the tank by passing through the second mounting hole on the side wall of the tank. Optionally, the external detection unit can be connected to the detection part of the liquid level probe in a plug-in manner, and the guide frame 102 can guide the plug-in connection, facilitating the connection. In addition, the guide frame 102 can also protect the connection part of the liquid level probe.

[0125] In some embodiments, the guide frame 102 can be integrally formed with the tank. It can be understood that the guide frame 102 can also be made independently of the tank and can be fixed to the tank through an adaptive connection structure. The guide frame 102 can be fixed to the tank by a snap connection, for example, but not limited to.

[0126] By setting the guide frame 102 around the plurality of mounting holes, the detection part can be connected in a plug-in manner to collect the detection signal of the probe, and the liquid level probe is protected.

[0127] According to some embodiments of the present application, the present application also provides a device comprising a liquid tank 100, and the liquid tank 100 adopts the liquid tank 100 in the above embodiments.

[0128] According to some embodiments of the present application, the liquid tank 100 optionally comprises an inclined working state. By adopting the liquid level assembly in the above embodiments, the liquid level detection can still be accurately realized when the liquid tank 100 is inclined, and false alarms are prevented.

[0129] According to some embodiments of the present application, referring to Figures 3 to 6 and Figure 12 and Figure 13 The present application provides a liquid tank 100, comprising a tank body 101 and a liquid level probe assembly. The tank body 101 is configured to contain liquid. The liquid level probe assembly comprises a guide frame 102 with one side opening and two liquid level probes. The bottom of the guide frame 102 has two first mounting holes, and the connecting ends of the two liquid level probes are located inside the guide frame 102 by passing through the first mounting holes one by one. The detection parts of the two liquid level probes have the same length. The side wall of the tank body 101 has a second mounting hole, and the guide frame 102 is fixedly installed on the tank body 101 by passing through the second mounting hole and being located outside the tank body 101. The mounting positions of the two liquid level probes are arranged in a direction parallel to the bottom surface of the tank body 101. The detection parts of the two liquid level probes are located inside the tank body 101, and the detection ends of the two liquid level probes have the same height relative to the bottom surface of the tank body. Among them, the detection ends of the detection parts of the two liquid level probes are both in a bent structure 200, and the bent structures 200 of the two liquid level probes are located in the same plane parallel to the bottom surface of the tank body. The bent structures 200 of the two liquid level probes are concentric annular structures, and extend along the side wall of the tank body 101.

[0130] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered in the scope of the claims and the description of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A liquid level probe assembly for detecting the liquid level in a tank, characterized in that, Comprising: a plurality of liquid level probes (20), each liquid level probe comprising a connecting portion and a detecting portion, wherein the detecting end of the detecting portion of at least one liquid level probe of the plurality of liquid level probes (20) is a bent structure (200); the bent structure (200) is located in the same plane, and the plane where the bent structure (200) is located is parallel to the bottom surface of the tank; the detecting end of the plurality of liquid level probes (20) is a bent structure (200), and the detecting end of the plurality of liquid level probes (20) is located in the same plane.

2. The liquid level probe assembly of claim 1, wherein, The bent structure (200) is a ring shape with an opening or a closed ring shape.

3. The liquid level probe assembly of claim 2, wherein, The bent structure (200) is a rectangular ring shape, a circular ring shape, or a polygonal ring shape.

4. A liquid tank (100), characterized in that Comprising: a tank configured to contain a liquid; the liquid level probe assembly of any one of claims 1-3 is mounted on the tank, and the detecting portion of the plurality of liquid level probes (20) of the liquid level probe assembly is located in the tank.

5. The fluid tank (100) according to claim 4, characterized in that The bent structure (200) extends along the side wall of the tank.

6. The fluid tank (100) according to claim 4 or 5, characterized in that The connecting portion and the detecting portion of each liquid level probe form an L-shaped structure.

7. The fluid tank (100) according to claim 6, characterized in that The side wall of the tank has a second mounting hole, and the guide frame (102) of the liquid level probe assembly passes through the second mounting hole, and at least a portion of the guide frame (102) is located outside the tank.

8. An apparatus comprising a liquid tank (100), characterized in that The liquid tank (100) adopts the liquid tank (100) of any one of claims 4-7.

9. The apparatus of claim 8, wherein, The liquid tank (100) includes an inclined working state.

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