Integrated detection liquid heater

Abstract

The invention belongs to the technical field of household appliances, and discloses an integrated detection liquid heater which comprises a glass cup body, a cup cover covering the upper portion of the glass cup body and a detection plate installed on the outer side of the glass cup body, the detection plate comprises a base plate and a capacitance pole piece installed on the base plate, the base plate is provided with a liquid level detection area, and the liquid level detection area is provided with a liquid level sensor. The capacitance pole piece comprises a liquid level capacitance pole piece arranged in the liquid level detection area and a cup cover capacitance pole piece located above the liquid level detection area, the cup cover is provided with an induction piece, and the induction piece is used for triggering the cup cover capacitance pole piece to generate a capacitance value so as to detect whether the cup cover is closed in place or not. The invention provides a brand-new cover closing detection mode, and meanwhile, a plurality of detection functions are integrated by utilizing the detection plate, so that the reliability and accuracy of each detection function are ensured, and the effects of simple assembly, reasonable spatial arrangement and reduction of the size of the whole machine can be realized.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of household appliances, and particularly relates to a liquid heater with integrated detection. BACKGROUND

[0002] Generally, liquid heaters such as health-care pots and water boilers do not have a cup cover detection structure. Usually, a cup cover is hingedly connected to a cup body in a water boiler or a health-care pot, and a lid closing button or the like is used to mechanically and simply prompt a user whether the cup cover is closed in place. When the user does not press the cup cover to the place or when small particles (tea stems) fall on the port of the cup body, the cup cover and the cup body cannot be tightly matched, the cup cover is not closed in place, and a large gap is formed between the cup cover and the cup body. When the liquid in the cup body boils, the splashed liquid drops or steam can be discharged from the gap, and the user is at risk of being scalded.

[0003] In some food processors, a crushing knife is arranged in a cup body, and a cup cover detection structure is usually arranged to prevent the crushing knife from working when the cup cover is not installed in place. The existing detection methods basically use a switch device to achieve the detection, for example, a Hall switch and a magnet are used to detect, or a micro switch and a mechanical connecting rod are used to detect.

[0004] For the detection method of the Hall switch, the Hall switch mainly detects the magnetic field change of the magnet instead of directly measuring the position of the magnet. The magnet and the Hall switch are easily affected by the nearby metal structure or the nearby magnetic field, and the magnetic field is unstable. When used for a long time, the magnetism of the magnet is easily weakened, the detection of the cup cover in place is not sensitive, the detection is unreliable, and the machine abnormally alarms. For the detection method of the micro switch, the micro switch is arranged in the cup cover, a movable protruding connecting rod is arranged at the handle of the cup body, the cup cover is closed in place, the connecting rod triggers the micro switch to achieve the detection of the cup cover. However, the user usually needs to flush the cup cover. There is a great risk of water entering the through hole arranged in the cup cover and matched with the connecting rod. In the process of flushing the cup cover, the cup cover may be filled with water, the micro switch may be filled with water and damaged, the detection may be invalid, and the micro switch is usually used for strong current detection. If the switch device is filled with water, there is a great safety risk. In addition, the movable arrangement of the connecting rod causes the mechanical structure to be complex, and the mechanical structure is unstable and is prone to jamming and triggering. The detection is unreliable, and the machine abnormally alarms.

[0005] In addition, the applicant has found that single cup cover detection in the food processor is often insufficient, and it is necessary to develop a food processor that can realize multiple function detection, such as not only cup cover detection, but also cup body liquid level, temperature detection, etc. Therefore, the applicant wants to continue research based on the prior research of the patent with the application number 201720526032.4, which discloses a food processor with good anti-overflow effect. A capacitive sensing plate for detecting the water level is arranged on the outer sidewall of the stirring cup. Since the capacitive sensing plate does not come into contact with the food material, the detection accuracy is improved while realizing liquid level detection, effectively preventing food material overflow and facilitating cleaning.

[0006] However, in further research, the applicant has found that during the installation of the whole machine, the switch structure and liquid level detection structure of the cup cover detection need to be installed separately, which is complex to assemble. Since the lead wires of each switch device and the liquid level detection plate are numerous and need to be arranged reasonably, the wire harness and detection device generally need to be hidden and installed. Especially when the cup body is a transparent glass cup body, the wire harness needs to be decorated and shielded. Therefore, if the assembly distance of each detection structure is too close, there may be wire winding and mutual interference of detection signals. Especially, the capacitive sensing plate generally needs a conductive part to trigger, and the detection element uses a metal part such as a capacitor pole, which is easy to interfere with the magnetic field of the magnet, causing detection failure, which requires complex debugging and complex assembly. The applicant thought of solving the above problems from the installation position, and oppositely installed the cup cover detection structure and the liquid level detection structure on different sides of the cup body. Then, the assembly distance of the switch device and the sensing plate is too far, the size of the cup body is increased, the overall volume is increased, and in the case that the installation direction of the cup cover is not unique, when the user makes a mistake, the detection is inaccurate and abnormal alarm occurs, etc. Problems cannot be solved, and the problems of complex assembly and unreliable detection cannot be solved.

[0007] Therefore, how to realize reliable cover detection of the liquid heater and further realize multiple function detection while simplifying the overall installation structure needs further research. SUMMARY

[0008] The present application provides an integrated detection liquid heater, which provides a new cover detection scheme and integrates multiple detection functions in the liquid heater to solve the problems of unreliable cover detection and difficult assembly of existing liquid heaters.

[0009] The technical scheme adopted by the present application is:

[0010] This invention provides an integrated detection liquid heater, comprising a glass cup body, a lid covering the glass cup body, and a detection plate mounted on the outside of the glass cup body. The detection plate includes a substrate and capacitor plates mounted on the substrate. The substrate has a liquid level detection area. The capacitor plates include a liquid level capacitor plate disposed in the liquid level detection area and a lid capacitor plate located above the liquid level detection area. The lid has a sensor for triggering the lid capacitor plate to generate a capacitance value to detect whether the lid is properly closed.

[0011] The integrated detection liquid heater provided by this invention features a detection plate mounted on the outside of a glass cup. Capacitor plates are mounted on the substrate, including a liquid level capacitor plate located in the liquid level detection area and a lid capacitor plate located above the liquid level detection area. The lid capacitor plate interacts with a sensor on the lid; the sensor triggers the lid capacitor plate to generate a capacitance value, thereby detecting whether the lid is properly closed. This lid-closed detection prevents burns caused by liquid droplets and steam splashing due to an improperly installed lid, ensuring user safety. Compared to a single lid capacitor plate, this design offers advantages over Hall effect sensors. The switch is compact and simple in structure, saving installation space and simplifying assembly. This simplified assembly also reduces the impact of wiring harness arrangement on the detection of each capacitor electrode, resulting in reliable detection. Furthermore, compared to traditional methods using magnets and Hall effect switches, the cup lid capacitor electrode allows for real-time lid position detection. The real-time capacitance change, achieved through the interaction of the sensor and the lid capacitor electrode, directly detects whether the lid is closed, reducing the influence of external environment or magnetic fields and improving detection accuracy. It also avoids the jamming and complex structure problems associated with traditional linkage triggering, simplifying the overall detection structure. Additionally, the inclusion of a liquid level capacitor electrode allows the detection board to be placed outside the glass cup for liquid level detection, preventing liquid adhesion from affecting accuracy and facilitating cleaning. The integrated detection board performs multiple detection functions, including spill detection and water level detection. Therefore, the detection board integrates lid positioning detection and internal liquid level detection, offering diverse detection capabilities. It also simplifies the installation process. The wiring between the liquid level detection and lid closing detection structures is centralized and orderly, making assembly quick and efficient, avoiding wire tangling that could affect detection. It also helps save installation space, reduce the overall size of the machine, and makes it convenient for users to store and retrieve. It uses liquid level at different heights to trigger the liquid level capacitors located in the liquid level detection area to achieve liquid level or overflow detection. It not only integrates the functions of the detection board, but also ensures that the detection signal of each capacitor is independent and accurate, improving the intelligence and reliability of the liquid heater. At the same time, it saves installation space, helps reduce the size of the glass cup, and makes it convenient for users to operate.

[0012] In conclusion, the application provides a new lid detection method, and meanwhile, the detection plate is integrated with multiple detection functions, which ensures the reliability and accuracy of each detection function, and achieves the effects of simple assembly, reasonable space arrangement and reduced overall volume of the machine.

[0013] In a preferred embodiment, the liquid heater further comprises a control system which collects the capacitance value V generated by the cup lid capacitor pole in real time and compares the capacitance value V with a preset value Vd set by the control system to determine whether the cup lid is closed in place when V >= Vd, or not closed in place when V < Vd.

[0014] By setting the control system, the control system collects the capacitance value V generated by the cup lid capacitor pole in real time, and then compares it with the preset value Vd to determine the real-time position of the cup lid, and outputs the corresponding result when V >= Vd or V < Vd.

[0015] In a preferred embodiment, the control system comprises a processing chip mounted on the substrate.

[0016] Alternatively, the control system comprises a control board on which a processing chip is arranged, and the control board is electrically connected to the detection plate.

[0017] Alternatively, the control system comprises a processing chip which stores the preset value Vd.

[0018] By mounting the processing chip on the substrate, the integration of the detection plate is further improved.

[0019] The control system comprises a control board on which a processing chip is arranged, and the control board is electrically connected to the detection plate.

[0020] By setting a processing chip for storing a preset value Vd, the generated capacitance value V of the cup cover capacitance pole is processed and analyzed, and the in-place detection of the cup cover is realized, and the structure is reliable.

[0021] In a preferred embodiment, the cup cover comprises a cover body and a limiting wall extending from the cover body into the glass cup body, and the inductive piece is located on the limiting wall to correspond to the cup cover capacitance pole transversely after the cup cover is closed.

[0022] By setting the cup cover as a cover body and a limiting wall extending from the cover body into the glass cup body, the limiting wall and the glass cup body realize limiting cooperation after the cup cover is closed, and the cooperation stability between the cup cover and the glass cup body during the working process of the liquid heater is improved. By setting the limiting wall and the inductive piece on the limiting wall, the inductive piece corresponds to the cup cover capacitance pole transversely after the cup cover is closed, so as to facilitate reducing the distance between the inductive piece and the cup cover capacitance pole, so that the inductive piece can reliably trigger the cup cover capacitance pole after the cup cover is closed, and the detection accuracy is improved.

[0023] In a preferred embodiment, the inductive piece is integrally injection molded in the inside of the limiting wall.

[0024] Alternatively, a sealing ring is fixedly sleeved on the outer periphery of the limiting wall, and the sealing ring shields the outside of the inductive piece to hide the inductive piece; preferably, a sealing cavity is arranged between the limiting wall and the sealing ring, and the inductive piece is fixed in the sealing cavity.

[0025] Alternatively, the inductive piece is an inductive ring extending along the circumference of the cup cover.

[0026] Alternatively, the inductive piece is an inductive sheet.

[0027] Whether the inductive piece and the limiting wall are integrally injection molded or fixed by the sealing cavity formed by the sealing ring, the protection of the inductive piece can be realized, the waterproofness and dustproofness are improved, the influence of external factors on the inductive piece is avoided, so that the inductive piece can reliably trigger the cup cover capacitance pole to generate a capacitance value after the cup cover is closed in place. When the integrally injection molded way is used, the inductive piece has a certain structure strengthening effect on the limiting wall, so that the structural strength of the cup cover is improved. When the inductive piece is fixed in the sealing cavity by the cooperation of the sealing ring and the limiting wall, the sealing ring not only realizes sealing cooperation with the cup body but also seals and protects the inductive piece, and multiple functions are integrated into one, so that the overall structure is simplified.

[0028] The inductive element is an inductive ring extending along the circumference of the cup cover, which can omnidirectionally increase the signal strength, so that the cup cover capacitor plate can obtain a significant change in the capacitance value, ensuring the reliability of the cover detection, and the inductive ring can be installed in multiple directions without being limited by the installation direction of the cup cover, facilitating the user to install the cup cover in multiple directions and realizing reliable in-place detection of the cup cover. The inductive element is an inductive sheet, which is simple in structure and convenient to install.

[0029] In a preferred embodiment, the cup cover has a lower end surface covering the cup mouth of the glass cup body, and the inductive element is arranged at the edge of the lower end surface. The minimum distance between the inductive element and the cup cover capacitor plate after the cup cover is closed is S, which satisfies S≤10mm.

[0030] By directly arranging the inductive element at the edge of the lower end surface of the cup cover and keeping S≤10mm, the inductive element can be located above the cup mouth, i.e. the distance between the inductive element and the liquid level in the cup is kept as small as possible, thereby preventing interference between the cup cover position detection and the liquid level detection, and realizing reliable cover detection and liquid level detection.

[0031] In a preferred embodiment, the cup cover is a metal cup cover, and the inductive element is the metal cup cover itself.

[0032] The use of a metal cup cover can directly utilize the cup cover itself to form the inductive element, further simplifying the structure of the overall liquid heater, and saving the independent installation of the inductive element during assembly, thereby simplifying the assembly.

[0033] In a preferred embodiment, the liquid level capacitor plate and the cup cover capacitor plate are both arranged on the side of the substrate facing the glass cup body.

[0034] By arranging the liquid level capacitor plate and the cup cover capacitor plate on the side of the substrate, the space utilization of the substrate is high, the structure of the detection plate is compact, the volume is small, and the installation and wire arrangement are facilitated.

[0035] In a preferred embodiment, the liquid level capacitor plate is arranged on the side of the substrate facing the glass cup body, and the cup cover capacitor plate is arranged on the upper end surface of the substrate.

[0036] By arranging the liquid level capacitor plate on the side of the substrate facing the glass cup body and the cup cover capacitor plate on the upper end surface of the substrate, the distance between the cup cover capacitor plate and the liquid level capacitor plate is increased, thereby avoiding mutual interference of the detection signals, and the structure is reliable and the detection is reliable.

[0037] In a preferred embodiment, the minimum distance L1 between the cup cover capacitor plate and the adjacent liquid level capacitor plate satisfies 5mm≤L1≤30mm.

[0038] By setting the minimum distance L1 between the cup cover capacitor pole and the adjacent liquid level capacitor pole to 5-30 mm, the detection interference risk between the cup cover capacitor pole and the liquid level capacitor pole is reduced, the situation that the liquid level triggers the cup cover capacitor pole to cause the machine to abnormally alarm is prevented, and the situation that the cup cover capacitor pole is mistakenly triggered during the user adding water into the glass cup body is avoided, the detection accuracy of the cover detection and the liquid level detection are improved, the probability of mistaken triggering is reduced, the cover detection is accurate, and the liquid level detection is accurate.

[0039] In a preferred embodiment, the liquid level detection area includes a water level detection area and an anti-overflow detection area located above the water level detection area, and the liquid level capacitor pole includes a plurality of water level capacitor poles arranged in the water level detection area and a plurality of anti-overflow capacitor poles arranged in the anti-overflow detection area.

[0040] By setting the water level detection area and the anti-overflow detection area located above the water level detection area in the liquid level detection area, and corresponding setting the plurality of water level capacitor poles and the plurality of anti-overflow capacitor poles, the liquid heating function of the liquid heater for different capacities of liquid can be realized, and the anti-overflow detection for different heights during heating of different capacities of liquid is realized, so that sufficient heating and boiling are realized, the anti-overflow detection time is shortened, the heating power of the heating device is saved, energy is saved, and more intelligent preparation of slurry drinks is realized.

[0041] In a preferred embodiment, the distance between the cup cover capacitor pole and the adjacent anti-overflow capacitor pole is L1, and the distance between the adjacent anti-overflow capacitor poles is L2, and L1>L2 is satisfied.

[0042] By setting L1>L2, the cup cover capacitor pole and the anti-overflow capacitor pole can be well isolated, the detection interference risk between the cup cover capacitor pole and the liquid level capacitor pole is reduced, the situation that the liquid level triggers the cup cover capacitor pole to cause the machine to abnormally alarm is prevented, and the situation that the cup cover capacitor pole is mistakenly triggered during the user adding water into the glass cup body is avoided, so that the probability of mistaken triggering is reduced, and the cover detection is accurate.

[0043] In a preferred embodiment, the detection height H1 of the cup cover capacitor pole, the detection height H2 of the anti-overflow capacitor pole, and the detection height H3 of the water level capacitor pole satisfy H1≥H2>H3.

[0044] By setting H1≥H2>H3, the area and size of the cup cover capacitor pole and the anti-overflow capacitor pole can be expanded, the signal strength of the cup cover detection and the anti-overflow detection can be improved, and the detection accuracy can be improved. During the preparation of soybean milk by the food processor, a large amount of foam appears on the upper layer of the liquid, and the foam has a weaker change in the capacitance value of the capacitor pole than the slurry, and a weaker signal is generated. Therefore, by H2>H3, the detection signal strength of the anti-overflow capacitor pole is improved, and the safety risk of overflow of the foam slurry is effectively avoided.

[0045] In a preferred embodiment, the liquid heater further comprises a stirring device and a motor, the stirring device is installed at the bottom of the glass cup body, and the motor is fixed below the glass cup body, and the rotating shaft of the motor penetrates the bottom wall of the glass cup body and is connected with the stirring device.

[0046] Alternatively, the liquid heater further comprises a stirring device and a motor, the stirring device and the motor are fixed on the cup cover, the stirring device is driven by the motor and extends into the glass cup body.

[0047] Alternatively, the liquid heater further comprises a base, and the glass cup body is detachably installed above the base.

[0048] The liquid heater is provided with a stirring device and a motor to realize the stirring function, realize the preparation of various beverages, and expand various functions.

[0049] The liquid heater comprises a base, and the glass cup body is detachably installed on the base, so that the user can easily detach the glass cup body to pour out the liquid or independently clean the glass cup body, reduce the risk of water entering the base, the structure is reliable, and the service life is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0050] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0051] Figure 1 It is a structure schematic view of the liquid heater in example 1;

[0052] Figure 2 It is a plane structure schematic view of the detection plate in example 1;

[0053] Figure 3 It is a three-dimensional structure schematic view of the detection plate in example 1;

[0054] Figure 4 It is a three-dimensional structure schematic view of the detection plate in example 4;

[0055] Figure 5Fig. 2 is a schematic diagram of the structure of the liquid heater in Example 7.

[0056] Explanation of reference numerals

[0057] 10 glass cup body; 20 cup cover; 21 inductor; 22 cover body; 23 limiting wall; 24 sealing ring; 30 detection plate; 31 base plate; 32 liquid level capacitor electrode plate; 321 water level capacitor electrode plate; 322 anti-overflow capacitor electrode plate; 33 cup cover capacitor electrode plate; 40 stirring device; 50 motor; 60 processing chip. DETAILED DESCRIPTION

[0058] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail with reference to the accompanying drawings.

[0059] In the following description, a lot of specific details are set forth in order to facilitate a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment can be combined with each other without conflict.

[0060] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation of the present application.

[0061] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection, or communication; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0062] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0063] As shown in Figures 1-3 the present application provides an integrated detection liquid heater in the embodiment example 1, which comprises a glass cup body 10, a cup cover 20 covering the glass cup body 10, and a detection plate 30 installed on the outer side of the glass cup body 10. The detection plate 30 comprises a substrate 31 and a capacitor electrode plate installed on the substrate 31. The substrate 31 is provided with a liquid level detection area, and the capacitor electrode plate comprises a liquid level capacitor electrode plate 32 arranged in the liquid level detection area and a cup cover capacitor electrode plate 33 located above the liquid level detection area. The cup cover 20 is provided with an inductor 21 for triggering the cup cover capacitor electrode plate 33 to generate a capacitance value to detect whether the cup cover 20 is properly covered. Optionally, the inductor 21 is a conductive metal piece, such as a copper piece, an iron piece, etc., to directly affect the capacitance value of the cup cover capacitor electrode plate 33 to realize cup cover position detection.

[0064] Preferably, as shown in Figure 1 the liquid heater in the embodiment example is a blender, and the liquid heater further comprises a stirring device 40 and a motor 50. The stirring device 40 is installed at the bottom of the glass cup body 10, and a heating disc is fixedly arranged at the bottom of the glass cup body. The motor 50 is fixed below the glass cup body 10, and the rotating shaft of the motor 50 penetrates through the bottom wall of the glass cup body 10 and is connected with the stirring device 40. In this way, the stirring function can be realized, and various beverages can be prepared, and various functions can be expanded. In the embodiment example, the stirring device is a crushing knife, and in fact, it can also be a stirring rod, a grinding head, etc.

[0065] In fact, the liquid heater can realize heating by directly fixing a heating piece on the glass cup body. The heating piece can be fixed at the bottom or the outer periphery of the glass cup body. In addition, the heating piece can also be provided separately from the glass cup body, such as being arranged in a base, and the glass cup body is detachably installed on the base to realize contact heating, etc.

[0066] For the liquid heater provided by the embodiment, the detection plate 30 mounted outside the glass cup body 10 is arranged outside the glass cup body 10 to prevent the detection accuracy from being affected by the adhesion of the slurry and facilitate cleaning. The capacitor plate is arranged on the substrate 31, and the capacitor plate includes the liquid level capacitor plate 32 arranged in the liquid level detection area and the cup cover capacitor plate 33 located above the liquid level detection area. The liquid level capacitor plate 32 is used to detect the liquid level in the cup, such as to achieve the anti-overflow detection and the water level detection. The cup cover capacitor plate 33 is used in cooperation with the inductor 21 arranged on the cup cover 20. The inductor 21 triggers the cup cover capacitor plate 33 to generate a capacitance value, so as to detect whether the cup cover 20 is properly closed, to achieve the in-place detection of the cup cover 20, prevent the user from being scalded due to the splashing of liquid drops and steam caused by the improper installation of the cup cover 20, and ensure the safety of use. Especially when the crushing device rotates to cut, the safety accidents in the cutting process are effectively reduced, and the safety of use is ensured.

[0067] Therefore, the detection plate 30 integrates the in-place detection of the cup cover 20 and the liquid level detection in the cup, diversifies the detection functions, simplifies the installation steps, and arranges the lines of the detection plate 30 in a centralized and orderly manner, so that the assembly is fast and efficient, the detection is not affected by the entanglement of the lines, the installation space is saved, the volume of the whole machine is reduced, the user is facilitated to store and take the machine, and the single capacitor plate is small in size, simple in structure, and easy to save the installation space and assemble. Due to the simplification of the assembly, the detection of each capacitor plate is not affected by the arrangement of the wire harness, the detection is reliable, and therefore, based on the integration of multiple detection functions by the detection plate 30, the cup cover capacitor plate 33 cooperates with the inductor 21 to generate a capacitance value to achieve the in-place detection of the cup cover 20, and the liquid level capacitor plate 32 located in the liquid level detection area is triggered by the liquid level of different heights to achieve the liquid level detection or the anti-overflow detection. Not only the function integration of the detection plate 30 is achieved, but also the detection signals of the single capacitor plate are independent and accurate, the intelligent degree and the reliability of the liquid heater are improved, the installation space is saved, the volume of the glass cup body 10 is reduced, and the user is facilitated to operate.

[0068] In a preferred embodiment, the liquid heater further includes a control system, which collects the capacitance value V generated by the cup cover capacitor plate 33 in real time and compares the capacitance value V with a preset value Vd set by the control system. When V≥Vd, the control system determines that the cup cover 20 is properly closed. When V<Vd, the control system determines that the cup cover 20 is not properly closed, and the machine alarms.

[0069] In combination with the liquid heater provided in Embodiment 1, the liquid heater is usually also provided with function buttons for user to select functions, such as rice paste, soy milk, juice, etc. In actual use, the control system can be set to determine the function according to the user's selection and execute it when the control system determines that the cup cover 20 is closed in place. When the control system determines that the cup cover 20 is not closed in place, the machine alarms, for example, through a buzzer or a loudspeaker to achieve sound alarm, a pre-recorded voice prompt or a synthesized voice to achieve voice alarm, or through an indicator light to achieve different color flashing to alarm and remind the user to close the cover again. When the cup cover 20 is detected to be closed in place again, the function is determined and executed according to the user's selection.

[0070] In this embodiment, the control system is provided to collect the capacitance value V generated by the cup cover capacitance pole 33 in real time, and then compare it with the preset value Vd to determine the real-time position of the cup cover 20. When V≥Vd, the control system determines that the cup cover 20 is closed in place. When V<Vd, the control system determines that the cup cover 20 is not closed in place, and the machine alarms to remind the user to adjust the position of the cup cover 20, thereby reducing the risk of the user being scalded by steam or hot liquid drops and improving the use experience. Compared with the traditional cooperation of a magnet and a Hall switch, since the Hall switch mainly detects the change of the magnetic field of the magnet instead of directly measuring the position of the magnet, the cup cover capacitance pole 33 can be used to detect the position of the cup cover 20 according to the real-time position of the cup cover 20, and the real-time capacitance value change of the cup cover capacitance pole 33 and the set clear limit, i.e. the preset value, can be used to realize non-contact detection and directly detect whether the cover is closed, thereby improving the detection accuracy.

[0071] Of course, it should be noted that in addition to the machine alarm, the control system can also be powered off or used in other ways to remind the user that the cup cover 20 is not in place.

[0072] In a more preferred embodiment, the control system includes a control board and a processing chip 60, as shown in Figure 3 The processing chip 60 is installed on the base plate 31. Alternatively, the control board is installed below the cup body.

[0073] For example, in this embodiment, the control board is used to control the machine to execute functions, and the processing chip is used to collect the capacitance value V, store the preset value Vd, compare the capacitance value V with the preset value Vd, and then perform data processing and conversion to send corresponding digital signals to the control board. The control board executes corresponding actions according to the digital signals.

[0074] In this embodiment, by mounting the processing chip on the substrate 31, the integration of the detection board 30 is further enhanced. The detection board 30 not only integrates capacitor plates to detect capacitance values, but also utilizes the processing chip to perform related parameter processing, is compatible with multiple programs, and achieves the effect of simplified structure and reasonable space utilization, which helps to reduce the overall volume of the liquid heater. By setting a processing chip that stores a preset value Vd, the capacitance value V generated by the capacitor plate 33 of the cup lid is processed and analyzed, thereby realizing the positioning detection of the cup lid 20, and the structure is reliable.

[0075] In fact, the present invention does not limit the location and function of the processing chip. For example, in other preferred embodiments, the control system includes a processing chip that stores a preset value Vd. The processing chip can be mounted on the substrate 31 or on a control board other than the substrate 31. Furthermore, the processing chip may be used only for storing the preset value Vd, or it may have other functions, such as acquiring the capacitance value V, comparing the capacitance value V with the preset value Vd, or even alarm control.

[0076] Alternatively, the control system includes a control board with a processing chip. The control board is electrically connected to the detection board 30 to perform comparison processing of relevant capacitance values, simplifying the structure of the detection board 30. The control system also includes a control board with a processing chip directly mounted on it. The control board is electrically connected to the detection board 30, and it independently controls other control devices besides the detection board 30 to enable the liquid heater to perform its relevant functions. This design offers reliable overall structure and comprehensive functionality.

[0077] The present invention does not limit the installation position of the sensing element 21. For example, it can adopt any of the following embodiments:

[0078] Implementation Example 1, such as Figure 1 As shown, in Example 1, the cup lid 20 includes a lid body 22 and a limiting wall 23 extending from the lid body 22 into the glass cup body 10. The sensing element 21 is located on the limiting wall 23 so that it is laterally aligned with the cup lid capacitor plate 33 after the cup lid 20 is closed, i.e., the heights overlap.

[0079] More preferably, such as Figure 1 As shown, a sealing ring 24 is fixedly sleeved on the outer periphery of the limiting wall 23, and the sealing ring 24 covers the outside of the sensing element 21 to hide the sensing element 21; specifically, a sealing cavity is formed between the limiting wall 23 and the sealing ring 24, and the sensing element 21 is fixed in the sealing cavity. For example, a groove is formed on the outside of the limiting wall 23, and the sealing ring wraps around the outside of the groove to form a sealing cavity.

[0080] Of course, in practice, the fixing of the inductor 21 can also be that the inductor 21 is integrally injection molded in the inside of the limiting wall 23, for example, the limiting wall 23 is provided with a certain thickness, a hollow cavity is arranged in the limiting wall 23, and the inductor 21 is injection molded in the inside of the limiting wall 23 by using liquid glue or directly using an injection molded cup cover during the injection molding of the cup cover 20.

[0081] In the embodiment, by arranging the cup cover 20 as the cover body 22 and the limiting wall 23 extending from the cover body 22 to the inside of the glass cup body 10, the limiting wall 23 and the glass cup body 10 are limitedly matched after the cup cover 20 is covered, the matching stability between the cup cover 20 and the glass cup body 10 during the working process of the liquid heater is improved, the inductor 21 is arranged on the limiting wall 23 to correspond to the cup cover capacitor pole piece 33 transversely after the cup cover 20 is covered, thereby facilitating the reduction of the distance between the inductor 21 and the cup cover capacitor pole piece 33, the inductor 21 can reliably trigger the cup cover capacitor pole piece 33 after the cup cover 20 is covered, and the detection accuracy is improved. Whether the inductor 21 and the limiting wall 23 are integrally injection molded or fixed by the sealing ring to form a sealed cavity, the protection of the inductor 21 can be realized, the waterproofness and dustproofness are improved, the influence of external factors on the inductor 21 is avoided, so that the inductor 21 can reliably trigger the cup cover capacitor pole piece 33 to generate a capacitance value after the cup cover 20 is covered in place. When the integrally injection molded manner is used, the inductor 21 has a certain structure strengthening effect on the limiting wall 23, so that the structural strength of the cup cover 20 is improved. When the inductor 21 is fixed in the sealed cavity by the sealing ring and the limiting wall 23, the sealing ring not only realizes the sealing matching with the cup body but also seals and protects the inductor 21, so that multiple functions are integrated in one, and the overall structure is simplified.

[0082] In the embodiment, by arranging the cup cover 20 as the cover body 22 and the limiting wall 23 extending from the cover body 22 to the inside of the glass cup body 10, the limiting wall 23 and the glass cup body 10 are limitedly matched after the cup cover 20 is covered, the matching stability between the cup cover 20 and the glass cup body 10 during the working process of the liquid heater is improved, the inductor 21 is arranged on the limiting wall 23 to correspond to the cup cover capacitor pole piece 33 transversely after the cup cover 20 is covered, thereby facilitating the reduction of the distance between the inductor 21 and the cup cover capacitor pole piece 33, the inductor 21 can reliably trigger the cup cover capacitor pole piece 33 after the cup cover 20 is covered, and the detection accuracy is improved. Whether the inductor 21 and the limiting wall 23 are integrally injection molded or fixed by the sealing ring to form a sealed cavity, the protection of the inductor 21 can be realized, the waterproofness and dustproofness are improved, the influence of external factors on the inductor 21 is avoided, so that the inductor 21 can reliably trigger the cup cover capacitor pole piece 33 to generate a capacitance value after the cup cover 20 is covered in place. When the integrally injection molded manner is used, the inductor 21 has a certain structure strengthening effect on the limiting wall 23, so that the structural strength of the cup cover 20 is improved. When the inductor 21 is fixed in the sealed cavity by the sealing ring and the limiting wall 23, the sealing ring not only realizes the sealing matching with the cup body but also seals and protects the inductor 21, so that multiple functions are integrated in one, and the overall structure is simplified.

[0083] By directly arranging the inductor 21 on the edge of the lower end face of the cup cover 20 and keeping S≤10mm, the inductor 21 can be located above the cup mouth, that is, the distance between the inductor 21 and the liquid level in the cup is kept as small as possible, so that the interference between the position detection of the cup cover 20 and the liquid level detection in the cup is prevented, and reliable cover detection and liquid level detection are realized.

[0084] Regardless of the position of the inductor 21 selected in the above, in practice, the structure of the inductor 21 can be selected as that the limiting wall 23 is annular, and the inductor 21 is an inductor ring, such as a metal ring, extending along the circumference of the cup cover 20. Of course, the inductor 21 can also be an inductor sheet, such as a metal sheet, fixed on the limiting wall 23.

[0085] Understandably, the sensing element 21 is a sensing ring extending circumferentially along the cup lid 20. This sensing ring increases signal strength from all directions, allowing for a significant change in capacitance value in the cup lid capacitor plate 33, ensuring reliable lid-closing detection. Furthermore, the sensing ring allows for convenient installation of the cup lid 20 from various orientations, regardless of its installation location, while simultaneously achieving reliable positioning detection of the cup lid 20. The sensing element 21 is a sensing sheet, with a simple structure and easy installation.

[0086] In Implementation Example 3, the cup lid 20 is a metal cup lid 20, and the sensing element 21 is the metal cup lid 20 itself.

[0087] For example, the lower edge of the limiting wall 23 of the metal cup lid 20 can be set to trigger the cup lid capacitor plate 33 after the cup lid 20 is installed in place, thereby realizing detection.

[0088] By using a metal cup lid 20, the sensing element 21 can be directly formed by the cup lid 20 itself, which further simplifies the structure of the overall liquid heater and eliminates the need for separate installation of the sensing element 21 during assembly, thus simplifying the assembly process.

[0089] In a preferred embodiment, such as Example 1, both the liquid level capacitor electrode 32 and the cup lid capacitor electrode 33 are disposed on the side of the substrate 31 facing the glass cup body 10.

[0090] By placing both the liquid level capacitor electrode 32 and the cup lid capacitor electrode 33 on the side of the substrate 31, the substrate 31 has high space utilization, and the detection board 30 has a compact structure, small size, and is convenient for installation and wiring harness arrangement.

[0091] The location of the capacitor electrode 33 in the cup lid is not limited to this, for example:

[0092] Implementation Example 4, such as Figure 4 As shown, the liquid level capacitor electrode 32 is disposed on the side of the substrate 31 facing the glass cup 10, and the cup lid capacitor electrode 33 is disposed on the upper end surface of the substrate 31.

[0093] By placing the liquid level capacitor electrode 32 on the side of the substrate 31 facing the glass cup 10, and placing the cup lid capacitor electrode 33 on the upper surface of the substrate 31, the distance between the cup lid capacitor electrode 33 and the liquid level capacitor electrode 32 is increased, avoiding mutual interference of detection signals, resulting in a reliable structure and reliable detection.

[0094] In a preferred embodiment, referring to Embodiment 1 and Embodiment 4, the substrate 31 is a strip-shaped, vertically extending flat plate structure.

[0095] In fact, the shape of the substrate 31 and the position of the capacitor electrode in this invention can also be:

[0096] In the embodiment 5, the substrate 31 comprises a vertical segment extending vertically and a horizontal segment extending horizontally and connected above the vertical segment, and the substrate 31 is a T-shaped plate. The liquid level capacitor electrode 32 is arranged vertically and spacedly on the side of the vertical segment, and the cup cover capacitor electrode 33 is arranged on the side or the upper end surface of the horizontal segment extending horizontally. Thus, the area of the cup cover capacitor electrode 33 is enlarged, the signal strength is increased, and the detection accuracy is improved.

[0097] Of course, the vertical segment and the horizontal segment can be flat plates or arc-shaped plates adapted to the circumference of the glass cup body 10.

[0098] In the embodiment 6, the substrate 31 comprises a vertical segment extending vertically and a ring-shaped segment extending annularly and connected above the vertical segment, and the ring-shaped segment surrounds the outer circumference of the glass cup body 10. The cup cover capacitor electrode 33 is arranged on the ring-shaped segment, and the liquid level capacitor electrode 32 is arranged on the vertical segment.

[0099] More preferably, the cup cover capacitor electrode 33 is arranged annularly on the ring-shaped segment. In this way, even if the inductor 21 on the cup cover 20 is in the form of a sheet, the cup cover capacitor electrode 33 can be reliably triggered when the cup cover 20 reaches the closing height after being installed in any orientation, and the position detection of the cup cover 20 is realized.

[0100] In a preferred embodiment, referring to the embodiment 1, the minimum distance L1 between the cup cover capacitor electrode 33 and the adjacent liquid level capacitor electrode 32 satisfies 5mm≤L1≤30mm.

[0101] Of course, the above distance setting is also applicable to other embodiments except the embodiment 1.

[0102] By setting the minimum distance L1 between the cup cover capacitor electrode 33 and the adjacent liquid level capacitor electrode 32 to 5mm-30mm, the detection interference risk between the cup cover capacitor electrode 33 and the liquid level capacitor electrode 32 is reduced, the situation that the liquid level triggers the cup cover capacitor electrode 33 to cause the machine to abnormally alarm is prevented, the situation that the cup cover capacitor electrode 33 is mistakenly triggered during the user adding water into the glass cup body 10 is avoided, and the inductor 21 of the cup cover 20 does not affect the detection of the liquid level capacitor electrode 32. Therefore, the probability of mistaken triggering is reduced, the closing detection is accurate, the liquid level detection is accurate, the height of the glass cup body 10 is not too large, the space utilization is high, and the overall volume of the liquid heater is not too large. Therefore, the detection precision and the space utilization are improved by satisfying 5mm≤L1≤30mm.

[0103] In a preferred embodiment, referring to the embodiment 1, the liquid level detection area comprises a water level detection area and an anti-overflow detection area located above the water level detection area, and the liquid level capacitor electrode 32 comprises a plurality of water level capacitor electrodes 321 arranged in the water level detection area and a plurality of anti-overflow capacitor electrodes 322 arranged in the anti-overflow detection area.

[0104] By setting the water level detection area and the anti-overflow detection area above the water level detection area in the liquid level detection area, and corresponding setting the plurality of water level capacitor poles 321 and the plurality of anti-overflow capacitor poles 322, the liquid heater can realize the liquid heating function for different capacities of liquid, and at the same time, the anti-overflow detection is performed at different heights when the liquid of different capacities is heated, so as to realize sufficient heating and boiling, shorten the anti-overflow detection time, save the heating power of the heating device, save energy, and realize more intelligent preparation of slurry drinks.

[0105] For example, the water level capacitor poles 321 are set to four from bottom to top for dry burning detection, first height water level detection, second height water level detection, and third height water level detection. The anti-overflow capacitor poles 322 correspond to first height anti-overflow detection, second height anti-overflow detection, and third height anti-overflow detection from bottom to top. Therefore, compared with the case where only one height of anti-overflow capacitor pole 322 is set, when different capacities of food materials are prepared, the corresponding anti-overflow capacitor pole 322 is used for detection, unnecessary boiling and heating are avoided, the anti-overflow detection time is shortened, the heating power of the heating device is saved, energy is saved, and more intelligent preparation of slurry drinks is realized.

[0106] More preferably, as shown in Figure 2 The distance between the cup cover capacitor pole 33 and the adjacent anti-overflow capacitor pole 322 is L1, and the distance between the adjacent anti-overflow capacitor poles 322 is L2, which satisfies: L1>L2.

[0107] When the cup cover capacitor pole is located on the upper end surface of the substrate, L1 is the vertical height difference between the cup cover capacitor pole 33 and the adjacent anti-overflow capacitor pole 322.

[0108] More preferably, the detection height H1 of the cup cover capacitor pole 33, the detection height H2 of the anti-overflow capacitor pole 322, and the detection height H3 of the water level capacitor pole 321 satisfy: H1≥H2>H3.

[0109] By setting L1>L2, the cup cover capacitor pole 33 and the anti-overflow capacitor pole 322 can be well isolated to reduce the detection interference risk between the cup cover capacitor pole 33 and the liquid level capacitor pole 32, prevent the situation that the liquid level triggers the cup cover capacitor pole 33 to cause the machine to abnormally alarm, and prevent the situation that the cup cover capacitor pole 33 is mistakenly triggered during the user adding water into the glass cup body 10. Therefore, the probability of mistaken triggering is reduced, and the cover detection is accurate.

[0110] By setting H1≥H2>H3, the area and size of the cup cover capacitor pole 33 and the anti-overflow capacitor pole 322 can be expanded, the signal strength of the cup cover 20 detection and anti-overflow detection can be improved, and the detection accuracy can be improved. During the preparation of soybean milk by the food processor, a large amount of foam appears on the upper layer of the liquid, and the foam has a weaker change in the capacitance value of the capacitor pole than the slurry, resulting in a weaker signal. Therefore, by H2>H3, the detection signal strength of the anti-overflow capacitor pole 322 is improved, and the safety risk of overflow of the foam slurry is effectively avoided.

[0111] Of course, in practice, different capacitor poles can be set to be equal in width, H1=H2=H3. In addition, the capacitor poles can be square, circular or other shapes.

[0112] It should be noted that the liquid heater in the present application is not limited to the above-mentioned form of the wall-breaking machine. In fact, the liquid heater can also be a traditional soybean milk machine, such as the one shown in Embodiment 7 Figure 5 , which includes a stirring device 40 and a motor 50. The stirring device 40 and the motor 50 are fixed on the cup cover 20 to form a machine head. The stirring device 40 is driven by the motor 50 and extends into the glass cup body 10.

[0113] The liquid heater can also be a health pot or a boiling pot. For example, the liquid heater further includes a base, and the glass cup body 10 is detachably mounted above the base. Optionally, a power panel is provided on the base, and the glass cup body 10 and the base are electrically coupled. Of course, the liquid heater can also be a wall-breaking machine with a detachable cup body. For example, the motor 50 is provided in the base, and the bottom of the glass cup body 10 is provided with a crushing device coupled to the motor 50.

[0114] The liquid heater includes a base, and the glass cup body 10 is detachably mounted on the base. This can facilitate the user to detach the glass cup body 10 to pour out the liquid or independently clean the glass cup body 10, reduce the risk of water entering the base, and prolong the service life.

[0115] In addition, the liquid heater can also be a juicer, which realizes the preparation of cold drinks by providing a crushing device in the cup body. Since the cup cover is provided with an inductive piece for triggering the cup cover capacitor pole to generate a capacitance value to detect whether the cup cover is properly closed, the problem of liquid splashing and spouting caused by the operation of the crushing device when the cup cover is not closed can be avoided.

[0116] The present application does not cover the above-mentioned places, which can be realized by using or referring to the existing technology.

[0117] Each embodiment in the present specification is described in a progressive manner, and the same or similar parts between each embodiment can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0118] The above merely illustrates the embodiments of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. within the spirit and principles of the present application shall fall into the scope of claims of the present application.

Claims

1. An integrated detection liquid heater, characterized by, The glass cup includes a cup body, a cup cover combined on the cup body, and a detection plate installed on the outer side of the cup body. The detection plate includes a substrate and a capacitor pole plate installed on the substrate. The substrate is provided with a liquid level detection area. The capacitor pole plate includes a liquid level capacitor pole plate arranged in the liquid level detection area and a cup cover capacitor pole plate located above the liquid level detection area. The cup cover is provided with a sensing element for triggering the cup cover capacitor pole plate to generate a capacitance value to detect whether the cup cover is combined in place.

2. The integrated detection liquid heater of claim 1, wherein, The control system is also provided. The control system collects the capacitance value V generated by the cup cover capacitor pole plate in real time and compares the capacitance value V with a preset value Vd set by the control system. When V >= Vd, the control system determines that the cup cover is combined in place. When V < Vd, the control system determines that the cup cover is not combined in place, and the machine alarms.

3. The integrated detection liquid heater of claim 2, wherein, The control system includes a processing chip installed on the substrate. Alternatively, the control system includes a control board provided with a processing chip. The control board is electrically connected with the detection plate. Alternatively, the control system includes a processing chip storing the preset value Vd.

4. The integrated detection liquid heater of claim 1, wherein, The cup cover includes a cover body and a limiting wall extending from the cover body into the glass cup body. The sensing element is located on the limiting wall to correspond with the cup cover capacitor pole plate transversely after the cup cover is combined.

5. The integrated detection liquid heater of claim 4, wherein, The sensing element is integrally injection molded in the inside of the limiting wall. Alternatively, a sealing ring is fixedly sleeved on the outer periphery of the limiting wall. The sealing ring shields the outside of the sensing element to hide the sensing element. Alternatively, the sensing element is a metal ring extending along the circumference of the cup cover. Alternatively, the sensing element is a sensing sheet.

6. The integrated detection liquid heater of claim 1, wherein, The cup cover has a lower end surface covering the cup mouth of the glass cup body. The sensing element is arranged on the edge of the lower end surface. The minimum distance between the sensing element and the cup cover capacitor pole plate after the cup cover is combined is S, which satisfies S <= 10 mm. Alternatively, the cup cover is a metal cup cover, and the sensing element is the metal cup cover itself.

7. The integrated detection liquid heater of claim 1, wherein, The liquid level capacitor pole plate and the cup cover capacitor pole plate are arranged on the side of the substrate facing the glass cup body. Alternatively, the liquid level capacitor pole plate is arranged on the side of the substrate facing the glass cup body, and the cup cover capacitor pole plate is arranged on the upper end surface of the substrate. Alternatively, the minimum distance L1 between the cup cover capacitor pole plate and the adjacent liquid level capacitor pole plate satisfies 5 mm <= L1 <= 30 mm.

8. The integrated detection liquid heater of claim 1, wherein, The liquid level detection area includes a water level detection area and an anti-overflow detection area located above the water level detection area. The liquid level capacitor pole plate includes a plurality of water level capacitor pole plates arranged in the water level detection area and a plurality of anti-overflow capacitor pole plates arranged in the anti-overflow detection area.

9. The integrated detection liquid heater of claim 8, wherein, The distance between the cup cover capacitor pole plate and the adjacent anti-overflow capacitor pole plate is L1, and the distance between the adjacent anti-overflow capacitor pole plates is L2, which satisfies L1 > L2. Alternatively, the detection height H1 of the cup cover capacitor pole plate, the detection height H2 of the anti-overflow capacitor pole plate, and the detection height H3 of the water level capacitor pole plate satisfy H1 >= H2 > H3.

10. The integrated detection liquid heater of claim 1, wherein, The liquid heater further comprises a stirring device and a motor, the stirring device is installed at the bottom of the glass cup body, the motor is fixed below the glass cup body, and the rotating shaft of the motor is connected with the stirring device through the bottom wall of the glass cup body. Alternatively, the liquid heater further comprises a stirring device and a motor, the stirring device and the motor are fixed on the cup cover, the stirring device is driven by the motor and extends into the glass cup body. Alternatively, the liquid heater further comprises a base, and the glass cup body is detachably installed above the base.

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