Detection assembly for detecting liquid level across air and liquid heater

Abstract

The utility model belongs to the technical field of liquid level detection devices, and particularly relates to a detection assembly for detecting the liquid level across the air and a liquid heater. The detection assembly comprises a capacitor plate and a processing plate electrically connected with the capacitor plate, the capacitor plate is provided with a plurality of capacitor pole pieces used for detecting liquid level signals across the air, the processing plate is provided with a processing chip used for processing the signals detected by the different capacitor pole pieces, the processing plate is further provided with a port used for being connected with a main control board, and the port is electrically connected with the main control board. The capacitor plate and the processing plate are arranged in a split mode. The liquid heater comprises a glass cup body and a detection assembly. One capacitor plate can be matched with processing plates with different performances to realize flexible configuration of the detection assembly, and the detection assembly is convenient to disassemble and assemble, so that the application range of the detection assembly is expanded, and the cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid level detection devices, and in particular relates to a detection component for detecting liquid level in the air and a liquid heater. Background Art

[0002] With the advancement of science and technology, the device used for water level detection in containers has been improved from traditional contact liquid level electrode detection to contactless capacitive detection. For example, the invention patent with application number 201410742295.X discloses a capacitive water level stepless detection device and a detection method, wherein the capacitive water level stepless detection device includes a capacitive slider, the capacitive slider includes a plurality of arranged capacitive sensors, the capacitive sensors located at both ends of the capacitive slider are grounded, the capacitive slider is connected to a Touch chip through a sensing line, the Touch chip is connected to a central processing unit through a signal line, the central processing unit is connected to a water level display, and a spacing grid is provided between the sensing line and the signal line.

[0003] However, in the existing detection device, both the capacitive sensor and the chip are fixed on the capacitive slider to form an integrated detection board, and the capacitive sensor and the chip are respectively located in the detection area and the processing area of ​​the capacitive slider, and it is impossible to replace the processing area or the detection area separately according to the application scenario. For example, for different scenarios with the same detection demand but different chip processing performance requirements, the entire capacitive slider must be redesigned and manufactured to meet the demand. Therefore, there is a lack of flexibility in dealing with different application scenarios, and the overall manufacturing and replacement costs are relatively high. Moreover, since the processing area of ​​the capacitive slider also includes chips, related conversion circuits, resistors and other electrical components, when any electrical component on the capacitive slider is damaged or fails, the entire capacitive slider needs to be replaced, resulting in inconvenience in maintenance and high replacement costs. In addition, the capacitive slider needs to have a large volume to install both the capacitive sensor and the chip, the overall volume is large, disassembly and assembly are not flexible, more installation space is required, and installation is complex and difficult.

[0004] At the same time, in order to ensure the detection reliability of the capacitive sensor, when the detection device is applied to a heated cup body for liquid level detection, it is necessary to shorten the distance between the capacitive sensor and the liquid in the cup body as much as possible. Generally, the capacitive slider is pressed against the outer wall of the cup body so that the capacitive sensor can fit the cup body. However, with the existing detection device, since the capacitive sensor and the chip are fixed on the capacitive slider, when the cup body is heated, the cup body, the capacitive slider and the chip are in contact heat transfer, and the chip is too close to the cup body, resulting in a large temperature rise of the chip. When the chip is overheated, it may cause signal processing delays or errors, and the chip may be damaged if it is in a high temperature environment for a long time. Utility Model Content

[0005] The utility model provides a detection component and a liquid heater for detecting liquid level in the air. The structure of the detection component for detecting liquid level in the air is optimized to solve the technical problems in the prior art that the integrated detection board has a unique assembly relationship, the signal processing part cannot be flexibly selected with high or low performance according to the application scenario, and the maintenance is inconvenient. Flexible assembly, disassembly and maintenance of the detection component are achieved, thereby expanding the application range of the detection component and saving costs.

[0006] The technical solution adopted by the utility model is:

[0007] The utility model provides a detection component for detecting liquid level in the air, comprising a capacitor plate and a processing board electrically connected to the capacitor plate, wherein the capacitor plate is provided with a plurality of capacitor electrodes for detecting liquid level signals in the air, the processing board is provided with a processing chip for processing signals detected by different capacitor electrodes, the processing board is also provided with a port for connecting to a main control board, and the capacitor plate and the processing board are separately arranged.

[0008] The utility model provides a detection component for detecting liquid level in the air, wherein the capacitor plate is provided with a plurality of capacitor electrodes for detecting liquid level signals in the air, so as to detect liquid levels at different heights, and the processing board is provided with a processing chip for processing the signals detected by different capacitor electrodes. By arranging the capacitor plate and the processing board separately, the capacitor plate and the processing board are made independent and separate, and the processing board is also provided with a port for connecting to the main control board. Therefore, different types of capacitor plates can be freely combined with different processing boards for use, and one capacitor plate can be optionally matched with different processing boards to realize flexible assembly and configuration of the detection component, so as to be able to adapt to different detection tasks or application equipment requirements and meet various customized detection requirements. According to the requirements of the chip processing function in the specific use scenario, for the use scenario with low detection requirements, such as when only water level detection is required, a low-profile version of the processing board with ordinary response speed or simple processing function is selected for assembly with the capacitor board; for the use scenario with high detection requirements, such as when multiple signal detections of water level and overflow prevention are required, a high-profile version of the processing board with fast response speed and diverse processing functions is selected for flexible assembly with the capacitor board, avoiding the cost waste caused by the need to upgrade the detection component as a whole, and avoiding the waste of resources caused by detection devices with high integration but not completely necessary, effectively reducing costs and using resources more effectively. In addition, when the processing board or the capacitor board is damaged, the damaged part can be replaced separately without replacing the entire board, which is convenient for maintenance and reduces maintenance costs.

[0009] In addition, by setting the capacitor plate and the processing plate separately, when the detection component is applied to the liquid heater, the positions of the capacitor plate and the processing plate can be flexibly arranged, and the positions of the two are independent of each other. For example, while increasing the distance between the processing plate and the cup body, the distance between the capacitor plate and the cup body is shortened, thereby achieving accurate detection of the capacitor plate and reducing the thermal radiation effect of the heat of the cup body on the processing plate, solving the problem of large temperature rise of the chip, avoiding overheating of the processing chip and accelerated aging, extending the service life of the detection component, and improving detection reliability.

[0010] In a preferred embodiment, the capacitor plate is provided with a flat cable connected to each of the capacitor electrodes, and the processing board is provided with a socket for plugging and matching with the flat cable;

[0011] By arranging a flat cable on the capacitor plate, it is possible to achieve electrical connection with each capacitor electrode, and at the same time, the flat cable concentrates the wires of each capacitor electrode, which is convenient for organization and wiring, and reduces the confusion and crossing of wires. The flat cable is generally wrapped in insulating material, which can provide a certain degree of wire protection and reduce the risk of wires being physically damaged by the outside world. At the same time, the flat cable is used to connect the processing board and the capacitor board. The connection method is flexible. The capacitor plate and the processing board can be fixed first as needed, and then the flat cable can be flexibly bent and folded to make electrical connection, which can adapt to different installation scenarios and space requirements, and simplify the overall disassembly and assembly of the detection component.

[0012] In a preferred embodiment, the capacitor plate is provided with a pin connected to each of the capacitor electrodes, and the processing board is provided with a plug that is plugged and matched with the pin.

[0013] The electrical connection between the capacitor plate and the processing board is achieved by plugging and matching the pins and plugs, which reduces the layout of the wiring harness, has a compact structure, and relatively simple plugging and unplugging operations, which helps to improve the connection efficiency between the capacitor plate and the processing board.

[0014] In a preferred embodiment, the capacitor plate includes a water level detection area and an anti-overflow detection area above the water level detection area, and the multiple capacitor electrodes include multiple water level capacitor electrodes arranged in the water level detection area and multiple anti-overflow capacitor electrodes arranged in the anti-overflow detection area.

[0015] By respectively arranging a plurality of water level capacitor electrodes and a plurality of anti-overflow capacitor electrodes in the water level detection area and the anti-overflow detection area, water level detection and anti-overflow detection can be realized with diverse functions. When applied to a liquid heater, water level signal detection of a plurality of different liquid capacities and anti-overflow signal detection corresponding to different liquid capacities can be realized remotely. When applied to a food processing machine, intelligent production of slurry beverages with different pulping capacities can be realized. By arranging a plurality of anti-overflow capacitor electrodes and corresponding to the anti-overflow detection of different preparation capacities, not only is it ensured that the slurry overflows, but also the pulping efficiency can be optimized to avoid the problems of too long pulping time, or poor boiling or crushing.

[0016] In a preferred embodiment, the anti-overflow detection area includes a first sub-anti-overflow detection area and a second sub-anti-overflow detection area arranged side by side, which are divided by a dividing groove. The dividing groove is a straight dividing groove inclined relative to the capacitor plate, and a single anti-overflow capacitor electrode is divided into two sub-electrodes by the dividing groove.

[0017] By setting a separation groove, a single anti-overflow capacitor electrode is divided into two sub-electrode pieces by the separation groove, so as to facilitate detection using a single sub-electrode piece. In the anti-overflow detection process, the processing chip obtains the first cumulative value of the capacitance value increment detected by each sub-electrode piece in the first sub-overflow detection area and the second cumulative value of the capacitance value increment detected by each sub-electrode piece in the second sub-overflow detection area, and determines the current anti-overflow height according to the ratio of the first cumulative value to the second cumulative value. Since the foam on the surface of the slurry is uneven during the pulping process, by respectively obtaining the cumulative value of the capacitance value detected by the two sub-overflow detection areas for ratio comparison, an anti-overflow signal that is closer to the actual anti-overflow detection position can be obtained, thereby effectively avoiding the overflow of slurry such as bubbles and foam during the pulping process. Therefore, compared with the prior art, when the liquid heater of the present invention is used to detect the anti-overflow signal, it will be more reliable and less likely to have the safety risk of slurry overflow.

[0018] In a preferred embodiment, the capacitor plate is a flexible plate;

[0019] Alternatively, the processing board is a hard board;

[0020] Alternatively, the thickness of the processing plate is not less than the thickness of the capacitor plate.

[0021] The capacitor plate is a flexible plate that can be bent flexibly and can adapt to the shapes of different detection containers to meet the installation requirements on the outside of a curved cup body. Furthermore, the capacitor electrode arranged on the capacitor plate can also adapt to the shape of different detection containers, so that the detection interval is accurate and the detection is accurate and reliable.

[0022] The processing board is a rigid board with great structural strength and good heat resistance. It can firmly and reliably position the processing chip and reduce the risk of connection breakage and line falling off.

[0023] The thickness of the processing board is not less than the thickness of the capacitor board. The processing board has a certain thickness, which has good heat resistance and heat insulation, and enhances the support and protection effect on the processing chip, avoids the processing chip from being disturbed by the external environment, and improves the life of the chip and detection reliability.

[0024] The utility model also provides a liquid heater, comprising a glass cup body and the above-mentioned detection component.

[0025] The liquid heater provided by the utility model sets the capacitor plate and the processing plate separately, and can flexibly arrange the positions of the capacitor plate and the processing plate. The positions of the two are independent of each other. For example, while increasing the distance between the processing plate and the cup body, the distance between the capacitor plate and the cup body is shortened, which not only realizes accurate detection of the capacitor plate, but also reduces the thermal radiation effect of the heat of the cup body on the processing plate, solves the problem of large temperature rise of the chip, prolongs the service life of the detection component, and improves the detection reliability; the arrangement of the capacitor plate and the processing plate is flexible, which reduces the difficulty of disassembly and assembly.

[0026] In a preferred embodiment, the capacitor plate is fixed to the outer side wall of the glass body, a mounting piece for hiding the capacitor plate is also fixed to the outer side of the glass body, and the processing board is mounted on the mounting piece.

[0027] By fixing the capacitor plate on the outer wall of the glass cup body, the detection distance of the capacitor plate is shortened, the distance between the capacitor plate and the liquid level is close, and the change of the liquid level capacitance in the glass cup body is easier to detect, thereby improving the sensitivity and accuracy of the detection. The capacitor plate is hidden and installed with a mounting piece to form physical protection for the capacitor plate, prevent the capacitor plate from being hit, scratched or damaged by external forces, and extend the service life of the capacitor plate. The processing board is installed on the mounting piece and is fixed reliably. At the same time, compared with the processing board being directly fixed on the glass cup body, the influence of the heat of the glass cup body on the processing board can be reduced, the temperature rise of the processing chip can be avoided, and the overheating of the processing chip can be avoided to accelerate aging, and the detection reliability of the processing chip can be improved. Therefore, while increasing the distance between the processing board and the cup body, the distance between the capacitor plate and the cup body is shortened, which not only realizes accurate detection of the capacitor plate, but also reduces the influence of the heat of the cup body on the thermal radiation of the processing board, thereby improving the detection reliability and service life.

[0028] In a preferred embodiment, a heat insulating member is provided between the glass body and the mounting member, and the heat insulating member isolates the glass body from the processing plate;

[0029] By setting a heat insulating member between the glass cup body and the mounting member, and the processing chip is installed on the mounting member, the heat insulating member isolates the glass cup body from the processing board. Therefore, the heat insulating member can effectively block the heat conducted by the glass cup body, prevent the mounting member and the processing chip from being affected by overheating, and improve the detection stability and reliability of the processing chip.

[0030] In a preferred embodiment, the mounting member is a handle fixed to the side of the glass body or a shell sleeved on the outside of the glass body;

[0031] Alternatively, the capacitor plate is pressed against the outer side wall of the glass body through the mounting member;

[0032] Alternatively, a positioning groove is provided on the outer side wall of the glass cup body, and the capacitor plate is encapsulated in the positioning groove through a glue potting layer.

[0033] The capacitor plate is pressed against the outer wall of the glass cup body by the mounting member to avoid a gap between the capacitor plate and the glass cup body, and the detection is sensitive and the capacitor plate is reliably fixed. By setting a positioning groove on the outer wall of the glass cup body, the capacitor plate is encapsulated in the positioning groove by a glue layer, so that the capacitor plate is positioned by the positioning groove, and the glue layer is used to achieve sealed installation, which is simple and efficient to assemble, and at the same time provides a sealed environment for the capacitor plate to avoid interference from the external environment such as water vapor, and the detection is accurate.

[0034] In a preferred embodiment, the capacitor plate is fixed to the outer side wall of the glass body, the liquid heater includes a mounting cavity arranged below the glass body, and the processing board is located in the mounting cavity.

[0035] The capacitor plate and the processing plate are arranged on the outer wall of the glass cup body and in the installation cavity below the glass cup body respectively, so that the lateral space and the bottom space of the glass cup body are fully utilized, the space utilization is reasonable and the structure is compactly arranged. At the same time, the capacitor plate can make full use of the height of the glass cup body, which is convenient for the arrangement of multiple capacitor electrodes to achieve the expansion of the vertical detection range and comprehensive detection of the glass cup body. The installation of the processing plate and the capacitor plate does not affect each other, and the assembly is efficient.

[0036] In a preferred embodiment, a motor and a motor bracket for fixing the motor are arranged in the installation cavity, the rotating shaft of the motor extends into the glass body and is connected with a crushing knife, and the processing plate is fixed to the motor bracket;

[0037] Alternatively, the bottom end of the glass body is open, the liquid heater comprises a heating plate that seals the bottom end of the glass body and a heating plate bracket for supporting the heating plate, the heating plate bracket is sleeved and fixed with the glass body to clamp the heating plate, and the processing board is fixed to the heating plate bracket;

[0038] Alternatively, the liquid heater comprises a cup seat surrounding the mounting cavity, and the processing board is fixed to the cup seat;

[0039] Alternatively, the liquid heater comprises a shell mounted on the outside of the glass body, the mounting cavity is formed between the bottom wall of the shell and the bottom wall of the glass body, and the processing board is fixed to the shell.

[0040] In a preferred embodiment, the liquid heater further comprises a detection element, the processing board is provided with an interface for connecting with the detection element, and the detection element comprises a temperature measuring element and a position detection element.

[0041] For example, the detection elements include temperature sensors, thermostats, fuses and other temperature measuring elements; the detection elements also include position detection elements for detecting the position of the cup cover of the glass cup body. The multifunctional detection of the liquid heater is realized, and the structure is reliable. At the same time, an interface for connecting with the detection element is set on the processing board. Therefore, the detection component not only realizes the remote liquid level detection function but also is compatible with the transmission of the detection signal of the detection element, such as the cover closing signal, temperature signal, etc. It has various functions, improves the integration and intelligence of the detection component, simplifies the structure of the main control board, and optimizes the layout of the overall wiring harness. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0043] Figure 1 A schematic diagram of the front structure of the detection component provided in Example 1 of the present utility model;

[0044] Figure 2 A schematic diagram of the back structure of the detection component provided in Example 1 of the present utility model;

[0045] Figure 3 A schematic diagram of the structure of the detection component provided for implementation example 2 of the utility model;

[0046] Figure 4 A schematic diagram of the structure of the detection component provided for implementation example 3 of the utility model;

[0047] Figure 5 A schematic diagram of the structure of a liquid heater provided in Example 4 of the present utility model;

[0048] Figure 6 This is a schematic structural diagram of a liquid heater provided in Example 5 of the present utility model.

[0049] Explanation of the accompanying drawings: 10, capacitor plate; 11, water level detection area; 12, anti-overflow detection area; 121, first sub-anti-overflow detection area; 122, second sub-anti-overflow detection area; 123, straight line dividing groove; 101, sub-electrode; 20, processing board; 21, port; 30, capacitor electrode; 31, water level capacitor electrode; 32, anti-overflow capacitor electrode; 40, processing chip; 50, cable; 60, pin; 70, plug; 80, glass cup body; 81, crushing knife; 82, motor; 83, installation cavity; 84, main control board; 85, thermal insulation; 86, motor bracket; 90, installation part. DETAILED DESCRIPTION

[0050] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0051] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present invention and the features in each embodiment may be combined with each other without conflict.

[0052] In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0055] like Figure 1 , Figure 2 In implementation example 1, the utility model provides a detection component for detecting liquid level in the air, including a capacitor plate 10 and a processing board 20 electrically connected to the capacitor plate 10, the capacitor plate 10 is provided with a plurality of capacitor electrodes 30 for detecting liquid level signals in the air, the processing board 20 is provided with a processing chip 40 for processing signals detected by different capacitor electrodes 30, the processing board 20 is also provided with a port 21 for connecting to a main control board, and the capacitor plate 10 and the processing board 20 are separately arranged.

[0056] It should be noted that the port 21 for connecting to the main control board can be selected as a welding point, and the main control board is connected with a wire welded to the welding point; or Figure 2 As shown, port 21 is a terminal seat, and the main control board is provided with a plug seat which is plugged into the terminal seat to realize electrical connection.

[0057] The detection component for remotely detecting liquid level provided by the utility model can be optionally used in devices such as liquid collectors and liquid heaters. The liquid heater can be a health pot, a water boiler, a food processor (soy milk machine, food processor, etc.). Since the capacitor plate 10 is provided with a plurality of capacitor electrodes 30 for remotely detecting liquid level signals, the detection of liquid levels at different heights can be realized, such as Figure 1 Multiple capacitor plates 30 respectively realize liquid level detection of height H1-10, and the processing board 20 is provided with a processing chip 40 for processing the detected signals of different capacitor plates 30. By separating the capacitor plate 10 and the processing board 20, the capacitor plate 10 and the processing board 20 are made independent and separate. The processing board 20 is also provided with a port for connecting to the main control board. Therefore, different types can be connected with different processing boards 20 to achieve compatible use and flexible assembly. A capacitor plate is matched with different processing boards 20 to realize flexible configuration of the detection component, so as to adapt to different detection tasks or application equipment requirements, meet various customized detection requirements, and expand the application range of the detection component.

[0058] Specifically, according to the requirements of the chip function in the specific use scenario, a suitable low-profile version processing board 20 or a high-profile version processing board 20 is selected to be configured with the capacitor plate. For example, when the detection component is applied to a non-heated liquid collector, it is only necessary to realize water level detection at different heights, so the processing chip 40 on the processing board 20 can select a low-profile chip that can process the water level signal; when the detection component is applied to a liquid heater, such as a soymilk machine, in order to meet the preparation of different capacities of the soymilk machine, the water level and the corresponding overflow detection of the capacity are detected when preparing soymilk of different capacities, so the processing chip 40 on the processing board 20 can select a comprehensive high-profile chip that can process water level signals and overflow prevention signals, and a high-profile chip with fast sensing speed can be selected to realize sensitive overflow prevention detection, avoiding the cost waste caused by the need to upgrade the detection component as a whole, and avoiding the waste of resources caused by the detection device with high integration but not completely necessary, effectively reducing costs and using resources more effectively. And, when the processing board 20 or the capacitor plate 10 is damaged, the damaged part can be replaced separately without the need to replace the whole, reducing the maintenance cost.

[0059] Preferably, in implementation example 1, Figure 1 , Figure 2 As shown, the capacitor plate 10 is provided with a flat cable 50 connected to each capacitor electrode 30 , and the processing board 20 is provided with a socket (not shown) that is plugged and matched with the flat cable 50 .

[0060] By arranging the wiring 50 on the capacitor plate 10, it is possible to achieve electrical connection with each capacitor electrode 30, and at the same time, the wiring 50 concentrates the wires of each capacitor electrode 30, which is convenient for sorting and wiring, and reduces the confusion and crossing of the wires. The wiring 50 is generally wrapped in insulating material, which can provide a certain degree of wire protection and reduce the risk of the wires being physically damaged by the outside world. At the same time, the wiring 50 is used to connect the processing board 20 and the capacitor plate 10. The connection method is flexible and can be bent and folded as needed to adapt to different installation scenarios and space requirements, thereby simplifying the overall disassembly and assembly of the detection component.

[0061] Preferably, in implementation example 1, the capacitor plate 10 is a flexible plate, and the processing plate 20 is a rigid plate.

[0062] Preferably, in implementation example 1, the thickness of the processing plate 20 is not less than the thickness of the capacitor plate 10 .

[0063] The capacitor plate 10 is a flexible plate that can be flexibly bent and can adapt to the shape of different detection containers to meet the installation requirements on the outside of the cup body with an arc, and further, the capacitor electrode 30 arranged on the capacitor plate 10 can be adapted to the shape of different detection containers, so that the detection interval is accurate, and the detection is accurate and reliable. The processing plate 20 is a hard plate with high structural strength and good heat resistance. The positioning of the processing chip 40 is firm and reliable, reducing the risk of connection position breakage and line falling off. The thickness of the processing plate 20 is not less than the thickness of the capacitor plate 10. The processing plate 20 has a certain thickness, which has good heat resistance and heat insulation, and enhances the support and protection effect of the processing chip 40, avoids the interference of the processing chip 40 by the external environment, and improves the life of the chip and the detection reliability.

[0064] Preferably, in implementation example 1, Figure 1 As shown, the multiple capacitor electrodes 30 are of the same size and are evenly arranged on the strip-shaped capacitor plate 10 .

[0065] The connection method between the capacitor plate 10 and the processing plate 20 of the utility model is not limited to the above one, for example:

[0066] Implementation Example 2, such as Figure 3 As shown, what is different from the implementation example 1 is that the capacitor plate 10 is provided with a pin 60 connected to each capacitor electrode 30 , and the processing board 20 is provided with a plug 70 that is plugged and matched with the pin 60 .

[0067] The electrical connection between the capacitor plate 10 and the processing plate 20 is achieved by plugging and matching the pin 60 and the plug, which reduces the layout of the wiring harness, has a compact structure, and relatively simple plugging and unplugging operations, which helps to improve the connection efficiency between the capacitor plate 10 and the processing plate 20.

[0068] In addition, unlike implementation example 1, in the implementation example, Figure 3 As shown, the capacitor plate 10 includes a water level detection area 11 (the area below M) and an anti-overflow detection area 12 (the area above M) above the water level detection area 11, and the multiple capacitor electrodes 30 include multiple water level capacitor electrodes 31 arranged in the water level detection area 11 and multiple anti-overflow capacitor electrodes 32 arranged in the anti-overflow detection area 12.

[0069] By respectively arranging a plurality of water level capacitor electrodes 31 and a plurality of overflow prevention capacitor electrodes 32 in the water level detection area 11 and the overflow prevention detection area 12, water level detection and overflow prevention detection are realized, and the functions are diverse. When applied to a liquid heater, water level signal detection of a plurality of different liquid capacities and overflow prevention signal detection corresponding to different liquid capacities can be realized remotely. When applied to a food processing machine, intelligent production of slurry beverages with different slurry preparation capacities can be realized. By arranging a plurality of overflow prevention capacitor electrodes 32, overflow prevention detection corresponding to different preparation capacities can be realized, for example Figure 3As shown, the water level capacitor electrode at height H1 and the anti-overflow capacitor electrode at height H5 cooperate to realize low-capacity (such as 300ml) detection; the water level capacitor electrode at height H4 and the anti-overflow capacitor electrode at height H10 cooperate to realize high-capacity (such as 1000ml) detection, which not only ensures that there will be no slurry overflow, but also can optimize the pulping efficiency and avoid problems such as too long pulping time, or poor boiling or crushing.

[0070] Of course, the structure of the capacitor plate 10 and the capacitor electrode 30 of the utility model can also adopt the following implementation examples:

[0071] Implementation Example 3, such as Figure 4 As shown, the anti-overflow detection area 12 includes a first sub-anti-overflow detection area 121 and a second sub-anti-overflow detection area 122 which are arranged side by side and divided by a dividing groove. The dividing groove is a straight dividing groove 123 which is inclined relative to the capacitor plate 10, and the single anti-overflow capacitor electrode 32 is divided into two sub-electrodes 101 by the dividing groove.

[0072] By setting a separation groove, a single anti-overflow capacitor electrode 32 is divided into two sub-electrode pieces 101 by the separation groove, so as to facilitate detection using a single sub-electrode piece 101. In the anti-overflow detection process, the processing chip 40 obtains the first cumulative value of the capacitance value increment detected by each sub-electrode piece 101 in the first sub-overflow detection area 121 and the second cumulative value of the capacitance value increment detected by each sub-electrode piece 101 in the second sub-overflow detection area 122, and determines the current anti-overflow height according to the ratio of the first cumulative value to the second cumulative value. Since the foam on the surface of the slurry is uneven during the pulping process, by respectively obtaining the cumulative value of the capacitance value detected by the two sub-overflow detection areas 12 for ratio comparison, an anti-overflow signal that is closer to the actual anti-overflow detection position can be obtained, thereby effectively avoiding the overflow of slurry such as bubbles and foam during the pulping process. Therefore, compared with the prior art, when the liquid heater of the present invention is used to detect the anti-overflow signal, it will be more reliable and less likely to have the safety risk of slurry overflow.

[0073] like Figure 5 As shown, the utility model also provides a liquid heater, as shown in Example 4, the liquid heater includes a glass cup body 80 and the above-mentioned detection assembly, and the liquid heater also includes a mounting cavity 83 located below the glass cup body and a main control board 84 disposed in the mounting cavity. Preferably, the liquid heater in this embodiment is a soymilk machine, including a crushing knife 81 disposed in the glass cup body 80 and a motor 82 disposed at the bottom of the glass cup body to drive the crushing knife.

[0074] The liquid heater provided by the utility model sets the capacitor plate 10 and the processing plate 20 separately, and can flexibly arrange the positions of the capacitor plate 10 and the processing plate 20. The positions of the two are independent of each other. For example, while increasing the distance between the processing plate 20 and the cup body, the distance between the capacitor plate 10 and the cup body is shortened, which not only realizes accurate detection of the capacitor plate 10, but also reduces the thermal radiation effect of the heat of the cup body on the processing plate 20, solves the problem of large temperature rise of the chip, prolongs the service life of the detection component, and improves the detection reliability; the arrangement of the capacitor plate 10 and the processing plate 20 is flexible, which reduces the difficulty of disassembly and assembly.

[0075] As a preference, Figure 5 As shown, the capacitor plate 10 is fixed to the outer wall of the glass cup body 80, and a mounting member 90 for hiding the capacitor plate 10 is also fixed to the outer side of the glass cup body 80, and the processing board 20 is mounted on the mounting member 90. Figure 5 As shown, the mounting member 90 is a handle fixed to the side of the glass body 80. Of course, the mounting member 90 can also be a shell sleeved on the outside of the glass body 80.

[0076] By fixing the capacitor plate 10 on the outer wall of the glass cup body 80, the detection distance of the capacitor plate 10 is shortened, the distance between the capacitor plate 10 and the liquid level is close, and the change of the liquid level capacitance in the glass cup body 80 is more easily detected, thereby improving the sensitivity and accuracy of the detection. The mounting member 90 is used to hide the capacitor plate 10, form physical protection for the capacitor plate 10, prevent the capacitor plate 10 from being hit, scratched or damaged by external forces, and extend the service life of the capacitor plate 10. The processing board 20 is mounted on the mounting member 90, and is fixed reliably. At the same time, compared with the processing board 20 being directly fixed on the glass cup body 80, the influence of the heat of the glass cup body 80 on the processing board 20 can be reduced, the temperature rise of the processing chip 40 can be avoided, and the overheating of the processing chip 40 can be avoided to accelerate aging, and the detection reliability of the processing chip 40 can be improved. Therefore, while realizing the distance between the processing board 20 and the cup body, the distance between the capacitor plate 10 and the cup body is shortened, which not only realizes the accurate detection of the capacitor plate 10, but also reduces the influence of the heat of the cup body on the heat radiation of the processing board 20, and improves the detection reliability and service life.

[0077] More preferably, a heat insulating member 85 is provided between the glass body 80 and the mounting member 90, and the heat insulating member isolates the glass body from the processing plate, and the heat insulating member is made of silica gel or a hard baffle; Figure 5 As shown, the heat insulating member 85 is a heating plate bracket fixed to the bottom of the glass body. The heating plate bracket is sleeved on the bottom of the glass body, supporting the heating plate and pressing the heating plate to the bottom end of the glass body to achieve fixation.

[0078] By setting a heat insulating member between the glass cup body 80 and the mounting member 90, and the processing chip 40 is installed on the mounting member 90, the heat insulating member can effectively block the heat conducted by the glass cup body 80, prevent the mounting member 90 and the processing chip 40 from being affected by overheating, and improve the detection stability and reliability of the processing chip 40.

[0079] In this embodiment, the capacitor plate and the glass cup body can be specifically fixed as follows: the capacitor plate 10 is pressed against the outer wall of the glass cup body 80 by the mounting member 90; or, a positioning groove is provided on the outer wall of the glass cup body 80, and the capacitor plate 10 is encapsulated in the positioning groove by a glue potting layer.

[0080] The capacitor plate 10 is pressed against the outer wall of the glass cup body 80 by the mounting member 90, so that a gap is avoided between the capacitor plate 10 and the glass cup body 80, the detection is sensitive, and the capacitor plate 10 is reliably fixed. By setting a positioning groove on the outer wall of the glass cup body 80, the capacitor plate 10 is encapsulated in the positioning groove by a glue potting layer, so that the capacitor plate 10 is positioned by the positioning groove, and the glue potting layer is used to achieve a sealed installation, the assembly is simple and efficient, and at the same time, a sealed environment is provided for the capacitor plate 10 to avoid interference from the external environment such as water vapor, and the detection is accurate.

[0081] like Figure 6 As shown, the present invention also provides another liquid heater, such as embodiment 5, which is different from embodiment 4 in that, in this embodiment, the capacitor plate 10 is fixed to the outer wall of the glass cup body 80, and the liquid heater includes a mounting cavity 83 arranged below the glass cup body 80, and the processing board 20 is located in the mounting cavity 83, as shown in FIG. Figure 6 As shown, the installation cavity 83 is also provided with a main control board 84, a motor 82, etc., so as to realize a compact structure of the whole machine. Fixing the processing board in the installation cavity can facilitate the electrical connection with the main control board, and the signal transmission is reliable.

[0082] Moreover, the capacitor plate 10 and the processing plate 20 are arranged on the outer wall of the glass cup body 80 and in the installation cavity below the glass cup body 80, respectively, so that the lateral space and the bottom space of the glass cup body 80 are fully utilized, the space utilization is reasonable and the structure is compactly arranged. At the same time, the capacitor plate 10 can make full use of the height of the glass cup body 80, which is convenient for the arrangement of multiple capacitor electrodes 30 to achieve the expansion of the vertical detection range and comprehensive detection of the glass cup body 80. The installation of the processing plate 20 and the capacitor plate 10 does not affect each other, and the assembly is efficient.

[0083] In this embodiment, there is no limitation on the fixing method of the processing plate 20 in the installation cavity. For example, a motor 82 and a motor bracket 86 for fixing the motor are arranged in the installation cavity, the rotating shaft of the motor extends into the glass cup body 80 and is connected with a crushing knife, and the processing plate 20 is fixed to the motor bracket 86. Alternatively, the bottom end of the glass cup body 80 is open, and the liquid heater includes a heating plate that closes the bottom end of the glass cup body 80 and a heating plate bracket for supporting the heating plate. The heating plate bracket is fixedly connected with the glass cup body 80 to clamp the heating plate, and the processing plate 20 is fixed to the heating plate bracket.

[0084] In addition, in this embodiment, the method for forming the installation cavity can be selected as follows: the liquid heater includes a shell mounted on the outside of the glass cup body 80, the installation cavity is formed between the bottom wall of the shell and the bottom wall of the glass cup body 80, and the processing board 20 is fixed to the shell.

[0085] Alternatively, the liquid heater comprises a cup base enclosing a mounting cavity, and the processing plate 20 is fixed to the cup base.

[0086] Of course, it should be noted that the liquid heater provided by the present invention can not only be the above-mentioned soymilk machine model, but in fact, the liquid heater can also be a boiling water kettle, a health pot, etc.

[0087] In a preferred implementation example, the liquid heater further includes a detection element, the processing board is provided with an interface for connecting to the detection element, and the detection element includes a temperature measuring element and a position detection element.

[0088] For example, the detection elements include temperature sensors, thermostats, fuses and other temperature measuring elements; the detection elements also include position detection elements for detecting the position of the cup cover of the glass cup body. The multifunctional detection of the liquid heater is realized, and the structure is reliable. At the same time, an interface for connecting with the detection element is set on the processing board. Therefore, the detection component not only realizes the remote liquid level detection function but also is compatible with the transmission of the detection signal of the detection element, such as the cover closing signal, temperature signal, etc. It has various functions, improves the integration and intelligence of the detection component, simplifies the structure of the main control board, and optimizes the layout of the overall wiring harness.

[0089] The parts not described in the present invention can be realized by adopting or drawing on the existing technology.

[0090] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0091] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A detection component for detecting liquid level remotely, characterized in that: It includes a capacitor plate and a processing board electrically connected to the capacitor plate, the capacitor plate is provided with multiple capacitor electrodes for detecting liquid level signals in the air, the processing board is provided with a processing chip for processing signals detected by different capacitor electrodes, the processing board is also provided with a port for connecting to a main control board, and the capacitor plate and the processing board are separately arranged.

2. A detection component for remotely detecting liquid level according to claim 1, characterized in that: The capacitor plate is provided with a flat cable connected to each of the capacitor electrodes, and the processing board is provided with a socket for plugging and matching with the flat cable; Alternatively, the capacitor plate is provided with a pin connected to each of the capacitor electrodes, and the processing board is provided with a plug that is plugged and matched with the pin.

3. The detection component for remotely detecting liquid level according to claim 1, characterized in that: The capacitor plate includes a water level detection area and an anti-overflow detection area higher than the water level detection area, and the multiple capacitor electrodes include multiple water level capacitor electrodes arranged in the water level detection area and multiple anti-overflow capacitor electrodes arranged in the anti-overflow detection area.

4. The detection component for remotely detecting liquid level according to claim 3, characterized in that: The anti-overflow detection area includes a first sub-anti-overflow detection area and a second sub-anti-overflow detection area arranged side by side, which are divided by a dividing groove. The dividing groove is a straight dividing groove inclined relative to the capacitor plate, and a single anti-overflow capacitor electrode is divided into two sub-electrodes by the dividing groove.

5. The detection component for remotely detecting liquid level according to claim 1, characterized in that: The capacitor plate is a flexible plate; Alternatively, the processing board is a hard board; Alternatively, the thickness of the processing plate is not less than the thickness of the capacitor plate.

6. A liquid heater, characterized in that: It comprises a glass body and the detection component described in any one of claims 1-5.

7. A liquid heater according to claim 6, characterized in that: The capacitor plate is fixed to the outer side wall of the glass body, and a mounting piece for hiding the capacitor plate is also fixed to the outer side of the glass body, and the processing board is mounted on the mounting piece.

8. A liquid heater according to claim 7, characterized in that: A heat insulating member is provided between the glass body and the mounting member, and the heat insulating member isolates the glass body from the processing plate; Alternatively, the mounting member is a handle fixed to the side of the glass body or a shell sleeved on the outside of the glass body; Alternatively, the capacitor plate is pressed against the outer side wall of the glass body through the mounting member; Alternatively, a positioning groove is provided on the outer side wall of the glass cup body, and the capacitor plate is encapsulated in the positioning groove through a glue potting layer.

9. The liquid heater according to claim 6, characterized in that: The capacitor plate is fixed to the outer side wall of the glass body, the liquid heater comprises a mounting cavity arranged below the glass body, and the processing board is located in the mounting cavity.

10. The liquid heater according to claim 6, characterized in that: The liquid heater further comprises a detection element, and the processing board is provided with an interface for connecting with the detection element.

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