Integrated detection food processor

Abstract

The utility model belongs to the technical field of household appliances, and discloses an integrated detection food processor which comprises a non-metal cup body, a cup cover covering the cup body, a detection plate installed on the outer side of the cup body and a smashing device located in the cup body, and the detection plate comprises a base plate and a capacitor pole piece installed on the base plate. The base plate is provided with a liquid level detection area, 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 utility model provides a brand new cover closing detection mode, and meanwhile, the detection board is used for integrating various detection functions, so that the reliability and accuracy of each detection function are ensured, and the effects of simple assembly, reasonable space arrangement and reduction of the size of the whole machine can be realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of household appliances, and in particular relates to a food processing machine with integrated detection. Background Art

[0002] In some food processors, since a crushing blade is installed in the cup body, a cup cover detection structure is usually provided to prevent the crushing blade from working before the cup cover is installed properly, causing splashing slurry to spray out of the cup mouth and scald the user. Existing detection methods are basically implemented by switch devices, such as: using a Hall switch and a magnet to detect or a micro switch and a mechanical connecting rod to detect.

[0003] As for the detection method of the 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 magnet and the Hall switch are easily affected by the nearby metal structure or the nearby magnetic field, and there is a problem of unstable magnetic field. When used for a long time, the magnetism of the magnet is easily weakened, resulting in insensitive detection of the cup cover in place, unreliable detection, and abnormal alarm of the machine; and as for the detection method using the micro switch, the micro switch is generally arranged in the cup cover, and a movable protruding connecting rod is arranged at the handle of the cup body. When the cup cover is in place, the connecting rod triggers the micro switch to realize cup cover detection. However, since the user generally needs to rinse the cup cover, there is a great risk of water ingress in the through hole provided in the cup cover and the connecting rod. In the process of rinsing the cup cover, it is very likely that water will enter the cup cover, the micro switch will fail or be damaged due to water ingress, and the detection will fail. In addition, the switch device is generally used for strong current detection. If the switch device is flooded, there will be a great safety risk. In addition, the movable setting of the connecting rod makes the mechanical structure complicated, and there are unstable triggering situations such as jamming, unreliable detection, and abnormal alarm of the machine.

[0004] In addition, the applicant also found that it is often not enough to perform a single cup lid detection in a food processor. It is necessary to develop a food processor that can realize multiple function detections, such as not only cup lid detection, but also cup body liquid level and temperature detection, etc. Therefore, the applicant wants to continue research based on the previously developed patent application number 201720526032.4. The patent discloses a food processor with good anti-overflow effect. A capacitive sensor plate for detecting water level is provided on the outer wall of the mixing cup. Since the capacitive sensor plate does not contact the food, while realizing liquid level detection, the detection accuracy is improved, effectively preventing food from overflowing, and facilitating cleaning.

[0005] However, in the process of further research, the applicant also found that when installing the whole machine, it is necessary to install the switch structure and liquid level detection structure of the cup lid detection separately, which makes the assembly complicated; since the leads of each switch device and the liquid level detection board are numerous and need to be arranged reasonably, it is generally necessary to hide the wiring harness and the detection device, especially when the cup body is a transparent glass cup body, the wiring harness needs to be decorated and shielded. Therefore, if the assembly distance of each detection structure is too close, there will be interference between the winding and the detection signals, especially the capacitive sensing plate generally requires a conductive part to trigger, and the detection element uses metal parts such as capacitor pole pieces, which can easily interfere with the magnetic field of the magnet, resulting in detection failure, requiring complex debugging and complex assembly. The applicant thought of solving the above problems from the aspect of the installation position, and installing the cup lid detection structure and the liquid level detection structure oppositely on different sides of the cup body, which will cause the assembly distance of the switch device and the sensing board to be too far, the size of the cup body will increase, the overall volume will increase, and when the cup lid installation orientation is not unique, when the user makes an operation error, inaccurate detection and abnormal alarm will occur, and the problem of complex assembly and unreliable detection cannot be solved.

[0006] Therefore, how to achieve reliable lid closing detection of food processing machines and further achieve multiple function detection while simplifying the overall installation structure requires further research. Utility Model Content

[0007] The utility model provides a food processing machine with integrated detection, provides a new cover closing detection scheme and integrates multiple detection functions in the food processing machine, so as to solve the problem that the cover closing detection of the existing food processing machine is unreliable and easily causes splashing slurry to spray out and scald the user, and at the same time solve the technical problem of difficult assembly.

[0008] The technical solution adopted by the utility model is:

[0009] The utility model provides a food processing machine with integrated detection, comprising a non-metallic cup body, a cup cover covering the cup body, a detection plate installed on the outside of the cup body, and a crushing device located in the cup body, wherein the detection plate comprises a substrate and a capacitor electrode installed on the substrate, wherein the substrate is provided with a liquid level detection area, the capacitor electrode comprises a liquid level capacitor electrode arranged in the liquid level detection area and a cup cover capacitor electrode located above the liquid level detection area, and the cup cover is provided with a sensing element, wherein the sensing element is used to trigger the cup cover capacitor electrode to generate a capacitance value, so as to detect whether the cup cover is covered in place.

[0010] The food processing machine with integrated detection provided by the utility model is provided with a detection plate installed on the outside of a non-metallic cup body, and a capacitor electrode is provided on a substrate, wherein the capacitor electrode comprises a liquid level capacitor electrode provided in the liquid level detection area and a cup cover capacitor electrode located above the liquid level detection area, and the cup cover capacitor electrode cooperates with a sensing element provided on the cup cover, and the sensing element triggers the cup cover capacitor electrode to generate a capacitance value, so as to detect whether the cup cover is properly closed, thereby realizing the cover closing detection, preventing accidents of scalding the user due to splashing of liquid droplets and steam caused by failure of the cup cover to be properly installed, and the use is safe; compared with a single cup cover capacitor electrode, The Hall switch is compact and simple in structure, which is convenient for saving installation space and easy to assemble. Due to the simplified assembly, the influence of the wiring harness arrangement on the detection of each capacitor electrode is also reduced, making the detection reliable. Moreover, compared with the traditional combination of magnets and Hall switches, the cup cover capacitor electrode can realize the cup cover position detection according to the real-time position of the cup cover, and the real-time capacitance value changes of the induction component and the cup cover capacitor electrode can be used to directly detect whether the cover is closed, reducing the influence of the external environment or magnetic field on the detection, and the detection accuracy is high. It also prevents the jamming and complex structure of the traditional connecting rod trigger, and simplifies the overall structure of the detection. In addition, the liquid level capacitor electrode is set, so that the detection board is placed outside the non-metallic cup body for liquid level detection, preventing the slurry from sticking and affecting the detection accuracy and facilitating cleaning. The detection board is integrated to realize multiple detection functions, such as liquid level detection and water level detection. Therefore, the detection board integrates the cup cover in place detection and the liquid level detection function in the cup, and the detection function is diversified. At the same time, the installation steps are simplified. The wiring between the liquid level detection and lid closing detection structures is centralized and orderly, and the assembly is quick and efficient, which avoids the influence of wiring entanglement on detection. At the same time, it is also beneficial to save installation space, reduce the volume of the whole machine, and facilitate users to store and take it for use. The liquid levels at different heights are used to trigger the liquid level capacitor electrode located in the liquid level detection area to realize liquid level or overflow prevention detection. Not only the detection board function is integrated, but the detection signal of a single capacitor electrode is independent and accurate, which improves the intelligence and reliability of the food processing machine. At the same time, it saves installation space, helps to reduce the volume of the cup body, and facilitates user operation.

[0011] In summary, the utility model provides a new lid closing detection method. At the same time, the detection board integrates multiple detection functions, which not only ensures the reliability and accuracy of each detection function, but also achieves the effect of simple assembly, reasonable space layout, and reduced overall machine size. Since the lid closing detection is reliable, the food processor can fully realize crushing and boiling on the basis of meeting the safety premise, effectively preventing the crushing device from causing the slurry to splash and spray from the cup mouth, and is safe to use.

[0012] In a preferred embodiment, the food processor further comprises a control system for real-time acquisition of the capacitance value generated by the cup cover capacitor electrode and processing the capacitance value, the control system comprises a processing chip, and the processing chip is mounted on the substrate;

[0013] Alternatively, the food processor further includes a control system configured to collect and process in real time the capacitance value generated by the capacitive electrodes of the cup lid. The control system includes a control board provided with a processing chip thereon, and the control board is electrically connected to the detection board.

[0014] Alternatively, the food processor further includes a control system configured to collect and process in real time the capacitance value V generated by the capacitive electrodes of the cup lid. The control system includes a processing chip that stores a preset value Vd to enable comparison and processing of the capacitance value V and the preset value Vd.

[0015] Preferably, the control system collects in real time the capacitance value V generated by the capacitive electrodes of the cup lid 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 lid is properly closed; when V<Vd, the control system determines that the cup lid is not properly closed and the machine alarms.

[0016] By providing the control system, the control system can collect in real time the capacitance value V generated by the capacitive electrodes of the cup lid and then compare and judge it with the preset value Vd, and corresponding result output can be made according to the real-time position of the cup lid. When V≥Vd, the control system determines that the cup lid is properly closed; when V<Vd, the control system determines that the cup lid is not properly closed, and at the same time the machine alarms to remind the user to readjust the position of the cup lid, reducing the risk of the user being scalded by steam or hot liquid droplets and facilitating use and installation. Compared with the traditional cooperation of a magnet and a Hall switch, since the Hall switch mainly detects the magnetic field change of the magnet rather than directly measuring the position of the magnet, the present utility model can detect the position of the cup lid according to the real-time position of the cup lid by using the capacitive electrodes of the cup lid. According to the real-time capacitance value change of the capacitive electrodes of the cup lid and a clearly set boundary, i.e., the preset value, while realizing non-contact detection, it can directly detect whether the lid is closed, with high detection accuracy.

[0017] By mounting the processing chip on the substrate, the integration of the detection board is further improved. The detection board not only integrates capacitive electrodes to detect the capacitance value, but also can use the processing chip to implement related parameter processing, is compatible with multiple programs, achieves the effects of simplified structure and reasonable space utilization, and is beneficial to reducing the overall volume of the food processor.

[0018] The control system includes a control board, and a processing chip is directly provided on the control board. The control board is electrically connected to the detection board. The control board independently controls the operation of other control components except the detection board to enable the food processor to perform related functions. The overall structure is reliable and the functions are comprehensive.

[0019] By setting a processing chip for storing a preset value Vd, the collected capacitance value V generated by the cup cover capacitor electrode is processed and analyzed, thereby realizing the in-place detection of the cup cover, and the structure is reliable.

[0020] In a preferred embodiment, the cup cover includes a cover body and a limiting wall extending from the cover body into the cup body, and the sensing element is located on the limiting wall so as to correspond laterally to the cup cover capacitor electrode after the cup cover is closed.

[0021] By setting the cup cover as a cover body and a limiting wall extending from the cover body into the cup body, after the cup cover is closed, the limiting wall and the cup body achieve limiting cooperation, thereby improving the cooperation stability between the cup cover and the cup body during the operation of the food processor; by setting the limiting wall, the sensing element is set on the limiting wall so as to correspond laterally to the cup cover capacitor electrode after the cup cover is closed, thereby facilitating reducing the distance between the sensing element and the cup cover capacitor electrode, so that the sensing element can reliably trigger the cup cover capacitor electrode after the cup cover is closed, thereby improving the accuracy of detection.

[0022] In a preferred embodiment, the sensing element is integrally injection-molded inside the limiting wall;

[0023] Alternatively, a sealing ring is fixedly sleeved on the outer periphery of the limiting wall, and the sealing ring covers the outside of the sensing element to hide the sensing element; preferably, a sealing cavity is provided between the limiting wall and the sealing ring, and the sensing element is fixed in the sealing cavity;

[0024] Alternatively, the induction member is an induction ring extending along the circumference of the cup cover;

[0025] Alternatively, the induction element is an induction sheet.

[0026] Whether the sensing part and the limiting wall are integrally injection molded or fixed by a sealing ring to form a sealed cavity, the sensing part can be protected, the waterproof and dustproof properties can be improved, and the influence of external factors on the sensing part can be avoided, so that after the cup lid is in place, the sensing part can reliably trigger the cup lid capacitor electrode to generate a capacitance value. When the integral injection molding method is used, the sensing part also has a certain structural strengthening effect on the limiting wall, which improves the structural strength of the cup lid. When the sealing ring and the limiting wall cooperate with each other and the sensing part is fixed in the sealed cavity, the sealing ring not only achieves a sealed fit with the cup body, but also can seal and protect the sensing part. The multiple functions are integrated into one, simplifying the overall structure.

[0027] The induction element is an induction ring extending along the circumference of the cup cover. The induction ring can increase the signal strength in all directions, so that the cup cover capacitor electrode can obtain a significant change in capacitance value, ensuring the reliability of the lid closing detection. Moreover, the induction ring can facilitate users to install the cup cover in all directions without limiting the installation position of the cup cover, and realize reliable detection of the cup cover in place. The induction element is an induction sheet, which has a simple structure and is easy to install.

[0028] In a preferred embodiment, the cup cover has a lower end surface covering the cup mouth of the cup body, the induction element is arranged at the edge of the lower end surface, and the minimum distance between the induction element and the cup cover capacitor electrode after the cup cover is closed is S, and S≤10mm;

[0029] By directly setting the sensing element on the edge of the lower end surface of the cup lid and keeping S ≤ 10mm, the sensing element can be located above the mouth of the cup, that is, the distance between the sensing element and the liquid level in the cup is kept as close as possible, thereby preventing interference between the cup lid position detection and the liquid level detection in the cup, and achieving reliable lid closing detection and liquid level detection.

[0030] In a preferred embodiment, the cup cover is a metal cup cover, and the sensing element is the metal cup cover itself.

[0031] By using a metal cup cover, the cup cover itself can be directly used to form the sensing element, thereby further simplifying the structure of the overall food processing machine, eliminating the need for independent installation of the sensing element during assembly, and simplifying assembly.

[0032] In a preferred embodiment, the liquid level capacitor electrode and the cup cover capacitor electrode are both arranged on the side of the substrate facing the cup body;

[0033] By arranging the liquid level capacitor electrode and the cup cover capacitor electrode on the side of the substrate, the space utilization rate of the substrate is high, the detection board has a compact structure and a small size, and is convenient for installation and wiring harness arrangement.

[0034] In a preferred embodiment, the liquid level capacitor electrode is arranged on the side of the substrate facing the cup body, and the cup cover capacitor electrode is arranged on the upper end surface of the substrate;

[0035] By arranging the liquid level capacitor electrode on the side of the substrate facing the non-metallic cup body and the cup cover capacitor electrode on the upper end surface of the substrate, the distance between the cup cover capacitor electrode and the liquid level capacitor electrode is increased, thereby avoiding mutual interference of detection signals, and ensuring reliable structure and detection.

[0036] In a preferred embodiment, the minimum distance L1 between the cup cover capacitor electrode and an adjacent liquid level capacitor electrode satisfies: 5mm≤L1≤30mm.

[0037] By setting the minimum distance L1 between the cup cover capacitor electrode and the adjacent liquid level capacitor electrode at 5mm-30mm, L1 is prevented from being too small, so as to reduce the risk of detection interference between the cup cover capacitor electrode and the liquid level capacitor electrode, prevent the liquid level from triggering the cup cover capacitor electrode to cause abnormal alarm of the machine, and prevent the cup cover capacitor electrode from being triggered by mistake when the user adds water to the cup body, and also avoid the cup cover's sensing element from affecting the detection of the liquid level capacitor electrode, thereby reducing the probability of false triggering, accurate lid closing detection, and accurate liquid level detection; and avoid L1 being too large, resulting in the problem of too large height of the cup body, low space utilization, and too large overall volume of the food processing machine. Therefore, satisfying 5mm≤L1≤30mm can improve detection accuracy and space utilization.

[0038] 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 electrode includes a plurality of water level capacitor electrodes arranged in the water level detection area and a plurality of anti-overflow capacitor electrodes arranged in the anti-overflow detection area.

[0039] By setting a water level detection area and an anti-overflow detection area above the water level detection area in the liquid level detection area, and correspondingly setting multiple water level capacitor electrodes and multiple anti-overflow capacitor electrodes, the food processing machine can realize the function of heating liquids of different capacities. At the same time, anti-overflow detection is performed at corresponding heights when heating liquids of different capacities, thereby achieving sufficient heating and boiling, shortening the anti-overflow detection time, saving the heating power of the heating device, saving energy, and realizing more intelligent production of slurry beverages.

[0040] In a preferred embodiment, the distance between the cup cover capacitor electrode and the adjacent anti-overflow capacitor electrode is L1, and the distance between adjacent anti-overflow capacitor electrode pieces is L2, satisfying: L1>L2;

[0041] By setting L1>L2, the cup cover capacitor electrode and the anti-overflow capacitor electrode can be well isolated to reduce the risk of detection interference between the cup cover capacitor electrode and the liquid level capacitor electrode, prevent the liquid level from triggering the cup cover capacitor electrode to cause an abnormal alarm of the machine, and prevent the cup cover capacitor electrode from being mistakenly triggered when the user adds water to the cup body. Therefore, the probability of false triggering is reduced and the lid closing detection is accurate.

[0042] In a preferred embodiment, the detection height H1 of the cup cover capacitor electrode, the detection height H2 of the anti-overflow capacitor electrode, and the detection height H3 of the water level capacitor electrode satisfy: H1≥H2>H3.

[0043] By setting H1≥H2>H3, the area and size of the cup cover capacitor electrode and the anti-overflow capacitor electrode can be expanded to improve the signal strength of the cup cover detection and the anti-overflow detection and improve the detection accuracy. In the process of preparing soy milk in the food processor, a large amount of foam appears on the upper layer of the liquid, and the foam makes the capacitance value of the capacitor electrode change weaker than that of the slurry, generating a weaker signal. Therefore, by setting H2>H3, the detection signal strength of the anti-overflow capacitor electrode can be improved to effectively avoid the safety risk of overflow of foam slurry.

[0044] In a preferred embodiment, the food processor further comprises a motor for driving a stirring device, the stirring device is mounted at the bottom of the cup body, the motor is fixed below the cup body, and the rotating shaft of the motor passes through the bottom wall of the cup body and is connected to the stirring device;

[0045] Alternatively, the food processor further comprises a motor driving a stirring device, the stirring device and the motor are fixed on the cup cover, and the stirring device is driven by the motor and extends into the cup body;

[0046] Alternatively, the food processor further comprises a base, and the cup body is detachably mounted on the base.

[0047] The food processor is provided with a stirring device and a motor to realize the stirring function, realize the preparation of various beverages, and expand various functions. The food processor includes a base, and the cup body is detachably mounted on the base, which can facilitate the user to disassemble the cup body to pour out the liquid or clean the cup body independently, reduce the risk of water entering the base, have a reliable structure, and extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] 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:

[0049] Figure 1 This is a schematic diagram of the structure of the food processor in Example 1;

[0050] Figure 2 This is a schematic diagram of the planar structure of the detection board in Example 1;

[0051] Figure 3 This is a schematic diagram of the three-dimensional structure of the detection board in implementation example 1;

[0052] Figure 4 This is a schematic diagram of the three-dimensional structure of the detection board in Example 4;

[0053] Figure 5 This is a schematic diagram of the structure of the food processor in Example 7.

[0054] Description of reference numerals:

[0055] 10. Cup body; 20. Cup cover; 21. Induction element; 22. Cover body; 23. Limiting wall; 24. Sealing ring; 30. Detection plate; 31. Base plate; 32. Liquid level capacitor electrode; 321. Water level capacitor electrode; 322. Anti-overflow capacitor electrode; 33. Cup cover capacitor electrode; 40. Stirring device; 50. Motor; 60. Processing chip. DETAILED DESCRIPTION

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] like Figure 1-3 As shown, the utility model provides an integrated detection food processing machine in implementation example 1, including a non-metallic cup body 10, a cup cover 20 covering the cup body 10, a detection plate 30 installed on the outside of the cup body 10, and a crushing device located in the cup body. The detection plate 30 includes a substrate 31 and a capacitor electrode installed on the substrate 31. The substrate 31 is provided with a liquid level detection area. The capacitor electrode includes a liquid level capacitor electrode 32 arranged in the liquid level detection area and a cup cover capacitor electrode 33 located above the liquid level detection area. The cup cover 20 is provided with a sensor 21, and the sensor 21 is used to trigger the cup cover capacitor electrode 33 to generate a capacitance value to detect whether the cup cover 20 is covered in place. Optionally, the sensor 21 is a conductive metal part, such as a copper sheet, an iron sheet, etc., to directly affect the capacitance value of the cup cover capacitor electrode 33 to realize the cup cover position detection.

[0062] Preferably, if Figure 1 As shown, in this embodiment, the food processor is a wall breaking machine, and the food processor also includes a motor 50 driving a stirring device 40, the stirring device 40 is installed at the bottom of the cup body 10, a heating plate is fixed at the bottom of the cup body, the motor 50 is fixed below the cup body 10, and the rotating shaft of the motor 50 passes through the bottom wall of the cup body 10 and is connected to the stirring device 40. It can realize the stirring function, realize the preparation of a variety of drinks, and expand a variety of functions. In this embodiment, the stirring device is a crushing knife, but it can also be a stirring rod, a grinding head, etc.

[0063] Preferably, the food processor can achieve heating by directly fixing a heating element on the cup body, and the heating element can be fixed on the bottom or periphery of the cup body. The heating element can also be separately arranged from the cup body, for example, the heating element is arranged in the base, and the cup body is separately installed on the base to achieve contact heating.

[0064] Preferably, the cup body can be a glass cup body or a ceramic cup body.

[0065] For the food processor provided in this embodiment, by providing a detection board 30 installed outside the cup body 10, the detection board 30 is externally disposed outside the cup body 10 for detection, preventing slurry adhesion from affecting the detection accuracy and facilitating cleaning. By providing capacitive electrodes on the substrate 31, the capacitive electrodes include a liquid level capacitive electrode 32 provided in the liquid level detection area and a cup lid capacitive electrode 33 located above the liquid level detection area. The liquid level capacitive electrode 32 is used to detect the liquid level inside the cup, such as realizing anti-overflow detection and water level detection. The cup lid capacitive electrode 33 is used in cooperation with the sensing member 21 provided on the cup lid 20. The sensing member 21 triggers the cup lid capacitive electrode 33 to generate a capacitance value to detect whether the cup lid 20 is properly closed, realizing the in-place detection of the cup lid 20, preventing accidents such as liquid droplets and steam splashing caused by the cup lid 20 not being installed in place and scalding the user, and ensuring safe use. Especially when the crushing device rotates for cutting, it effectively reduces safety accidents during the cutting process and ensures safe use.

[0066] Therefore, the detection board 30 integrates the functions of in-place detection of the cup lid 20 and liquid level detection inside the cup. The detection functions are diversified. At the same time, the installation steps are simplified. The circuit layout of the detection board 30 is concentrated and orderly, the assembly is fast and efficient, avoiding circuit entanglement from affecting detection. At the same time, it is also conducive to saving installation space, reducing the volume of the whole machine, and facilitating users to store and pick up for use. Of course, compared with the Hall switch, each capacitive electrode is small in volume and simple in structure, facilitating the saving of installation space and simple assembly. Due to the simplification of the assembly, the influence of the wire harness layout on the detection of each capacitive electrode is also reduced, making the detection reliable. Therefore, on the basis of integrating multiple detection functions by using the detection board 30, the cooperation between the cup lid capacitive electrode 33 and the sensing member 21 is used to generate a capacitance value to realize the in-place detection of the cup lid 20, and the liquid level capacitive electrode 32 located in the liquid level detection area is triggered by different liquid levels to realize liquid level or anti-overflow detection. This not only realizes the function integration of the detection board 30, but also the detection signals of each capacitive electrode are independent and accurate, improving the intelligence and reliability of the food processor. At the same time, it also saves installation space, is conducive to reducing the volume of the cup body 10, and facilitates user operation.

[0067] In a preferred embodiment, the food processor further includes a control system. The control system collects the capacitance value V generated by the cup lid capacitive electrode 33 in real time and compares and judges the capacitance value V with the preset value Vd set by the control system. When V≥Vd, the control system judges that the cup lid 20 is properly closed; when V<Vd, the control system judges that the cup lid 20 is not properly closed, and the machine gives an alarm.

[0068] Combined with the food processor provided in Embodiment 1, generally, a food processor is also provided with function buttons for users to select functions, such as rice paste, soy milk, fruit juice, etc. During actual use, the control system can be set such that when the control system determines that the cup lid 20 is properly closed, the function is determined and executed according to the function selected by the user; when the control system determines that the cup lid 20 is not properly closed, the machine alarms. The alarm methods include, for example, sound alarms by setting a buzzer or a speaker, voice alarms by pre-recorded voice prompts or synthesized voices, or alarm by setting indicator lights to flash in different colors, etc., to remind the user to close the lid again. When it is detected again that the cup lid 20 is properly closed, the function is determined and executed according to the function selected by the user.

[0069] In this embodiment, by setting a control system, the control system is used to collect in real time the capacitance value V generated by the cup lid capacitor plate 33, and then compare and judge it with the preset value Vd. Corresponding result outputs can be made according to the real-time position of the cup lid 20. When V≥Vd, the control system determines that the cup lid 20 is properly closed; when V<Vd, the control system determines that the cup lid 20 is not properly closed, and at the same time the machine alarms to remind the user to readjust the position of the cup lid 20, reducing the risk of the user being scalded by steam or hot liquid droplets and facilitating use. Compared with the traditional cooperation of a magnet and a Hall switch, since the Hall switch mainly detects the magnetic field change of the magnet rather than directly measuring the position of the magnet, the utility model uses the cup lid capacitor plate 33 to detect the position of the cup lid 20 according to the real-time position of the cup lid 20. According to the real-time capacitance value change of the cup lid capacitor plate 33 and a clearly set boundary, i.e., the preset value, while realizing non-contact detection, it directly detects whether the lid is closed, with high detection accuracy.

[0070] Of course, it should be noted that in addition to using the machine alarm method, other methods such as power-off of the control system can also be used to remind that the cup lid 20 is not in place.

[0071] In a more preferred embodiment, the control system includes a control board and a processing chip 60. As Figure 3 shown, the processing chip 60 is installed on the substrate 31. Optionally, the control board is installed below the cup body.

[0072] 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, then perform data processing and conversion, and send a corresponding digital signal to the control board. The control board performs corresponding actions according to this digital signal.

[0073] In this embodiment, by installing the processing chip on the substrate 31, the integration of the detection board 30 is further improved. The detection board 30 not only integrates the capacitor electrode to detect the capacitance value, but also can use the processing chip to realize related parameter processing, compatible with multiple programs, and realize the effect of simplifying the structure and reasonable space utilization, which is conducive to reducing the overall volume of the food processing machine. By setting a processing chip that stores the preset value Vd, the capacitance value V generated by the collected cup cover capacitor electrode 33 is processed and analyzed, thereby realizing the detection of the cup cover 20 in place, and the structure is reliable.

[0074] In fact, the utility model does not limit the setting position and function of the processing chip. For example, in other preferred embodiments, the control system includes a processing chip for storing the preset value Vd, and the processing chip can be installed on the substrate 31 or on other control boards other than the substrate 31. In addition, the processing chip can be used only to store the preset value Vd, or it can have other functions, such as collecting the capacitance value V, comparing the capacitance value V and the preset value Vd, and even alarm control.

[0075] Alternatively, the control system includes a control board, a processing chip is provided on the control board, and the control board is electrically connected to the detection board 30, so that the control board is used to compare and process the relevant capacitance values, simplifying the structure of the detection board 30. The control system includes a control board, a processing chip is directly provided on the control board, and the control board is electrically connected to the detection board 30. The control board independently controls other control devices other than the detection board 30 to operate so that the food processing machine can perform relevant functions. The overall structure is reliable and the functions are comprehensive.

[0076] The present invention does not limit the installation position of the sensing element 21. For example, it can adopt any of the following implementation examples:

[0077] Implementation example 1, such as Figure 1 As shown, in implementation example 1, the cup cover 20 includes a cover body 22 and a limiting wall 23 extending from the cover body 22 into the cup body 10, and the sensor 21 is located on the limiting wall 23 so as to correspond laterally to the cup cover capacitor electrode 33 after the cup cover 20 is closed, that is, there is an overlap in height.

[0078] More preferably, if 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 blocks the outer side of the sensing element 21 to hide the sensing element 21; specifically, a sealed cavity is set between the limiting wall 23 and the sealing ring 24, and the sensing element 21 is fixed in the sealed cavity. For example, a groove is set on the outer side of the limiting wall 23, and the sealing ring is wrapped around the outer side of the groove to form a sealed cavity.

[0079] Of course, in practice, the sensor 21 can also be fixed by: the sensor 21 is integrally injection-molded inside the limiting wall 23. For example, the limiting wall 23 is set to have a certain thickness, a hollow cavity is set in the limiting wall 23, and the sensor 21 is injection-molded inside the limiting wall 23 during the injection molding process of the cup cover 20 using liquid glue or directly using injection molding of the cup cover.

[0080] In this embodiment, by setting the cup cover 20 as a cover body 22 and a limiting wall 23 extending from the cover body 22 into the cup body 10, after the cup cover 20 is closed, the limiting wall 23 and the cup body 10 achieve limiting cooperation, thereby improving the cooperation stability between the cup cover 20 and the cup body 10 during the operation of the food processor. By setting the limiting wall 23, the sensor 21 is set on the limiting wall 23 so as to correspond laterally to the cup cover capacitor electrode 33 after the cup cover 20 is closed, thereby facilitating the reduction of the distance between the sensor 21 and the cup cover capacitor electrode 33, so that the sensor 21 can reliably trigger the cup cover capacitor electrode 33 after the cup cover 20 is closed, thereby improving the accuracy of detection. Whether the sensor 21 and the limiting wall 23 are integrally injected or fixed by a sealing ring to form a sealed cavity, the protection of the sensor 21 can be achieved, the waterproof and dustproof properties can be improved, and the influence of external factors on the sensor 21 can be avoided, so that after the cup cover 20 is closed in place, the sensor 21 can reliably trigger the cup cover capacitor electrode 33 to generate a capacitance value. When the one-piece injection molding method is used, the sensing element 21 also has a certain structural reinforcement effect on the limiting wall 23, thereby improving the structural strength of the cup cover 20. When the sealing ring and the limiting wall 23 cooperate with each other and the sensing element 21 is fixed in the sealing cavity, the sealing ring can not only achieve a sealing cooperation with the cup body but also seal and protect the sensing element 21, integrating multiple functions into one, simplifying the overall structure.

[0081] Implementation Example 2: In Implementation Example 2, the cup cover 20 has a lower end surface covering the cup mouth of the cup body 10, and the sensor 21 is arranged at the edge of the lower end surface. The minimum distance between the sensor 21 and the cup cover capacitor electrode 33 after the cup cover 20 is closed is S, and S≤10mm.

[0082] By directly setting the sensing element 21 on the lower end edge of the cup cover 20 and keeping S ≤ 10 mm, the sensing element 21 can be located above the mouth of the cup, that is, the distance between the sensing element 21 and the liquid level in the cup is kept as close as possible, thereby preventing interference between the position detection of the cup cover 20 and the liquid level detection in the cup, and achieving reliable lid closing detection and liquid level detection.

[0083] Regardless of which of the above positions the sensing member 21 selects, in fact, the structure of the sensing member 21 can be selected as follows: the limiting wall 23 is annular, and the sensing member 21 is an sensing ring extending along the circumference of the cup cover 20, such as a metal ring; of course, the sensing member 21 can also be a sensing sheet fixed on the limiting wall 23, such as a metal sheet.

[0084] It can be understood that the induction member 21 is an induction ring extending along the circumference of the cup cover 20. The induction ring can increase the signal strength in all directions, so that the cup cover capacitor electrode 33 can obtain a significant capacitance value change, ensuring the reliability of the cover closing detection. Moreover, the induction ring can facilitate the user to install the cup cover 20 in all directions without limiting the installation orientation of the cup cover 20, and realize reliable detection of the cup cover 20. The induction member 21 is an induction sheet, which has a simple structure and is easy to install.

[0085] In implementation example 3, the cup cover 20 is a metal cup cover 20 , and the sensing element 21 is the metal cup cover 20 itself.

[0086] For example, the lower edge of the limiting wall 23 of the metal cup cover 20 is arranged to trigger the cup cover capacitor electrode 33 after the cup cover 20 is installed in place to achieve detection.

[0087] By using the metal cup cover 20, the cup cover 20 itself can be directly used to form the sensing element 21, which further simplifies the structure of the entire food processing machine. During assembly, the independent installation of the sensing element 21 is omitted, thereby simplifying the assembly.

[0088] In a preferred embodiment, as in Example 1, the liquid level capacitor electrode 32 and the cup cover capacitor electrode 33 are both arranged on the side of the substrate 31 facing the cup body 10;

[0089] By arranging the liquid level capacitor electrode 32 and the cup cover capacitor electrode 33 on the side of the substrate 31, the space utilization rate of the substrate 31 is high, the detection board 30 has a compact structure and a small size, and is convenient for installation and wiring harness arrangement.

[0090] The utility model is not limited to the location of the cup cover capacitor electrode 33, for example:

[0091] Implementation Example 4, such as Figure 4 As shown, the liquid level capacitor electrode 32 is arranged on the side of the substrate 31 facing the cup body 10, and the cup cover capacitor electrode 33 is arranged on the upper end surface of the substrate 31;

[0092] By setting the liquid level capacitor electrode 32 on the side of the substrate 31 facing the cup body 10 and the cup cover capacitor electrode 33 on the upper end surface of the substrate 31, the distance between the cup cover capacitor electrode 33 and the liquid level capacitor electrode 32 is increased, avoiding mutual interference of detection signals, and ensuring reliable structure and detection.

[0093] In a preferred embodiment, referring to Implementation Example 1 and Implementation Example 4, the substrate 31 is a strip-shaped vertically extending flat plate structure.

[0094] In fact, the shape of the substrate 31 and the position of the capacitor electrode of the utility model can also be:

[0095] In implementation example 5, the substrate 31 includes a vertical section extending vertically and a horizontal section connected above the vertical section and extending horizontally, forming a T-shaped plate, the liquid level capacitor electrode pieces 32 are arranged at intervals along the vertical direction on the side of the vertical section, and the cup cover capacitor electrode pieces 33 are arranged on the side or upper end surface of the horizontal section to extend horizontally. Thereby, the area of ​​the cup cover capacitor electrode piece 33 is expanded, the signal strength is increased, and the detection accuracy is improved.

[0096] Of course, the vertical section and the horizontal section can be flat plates or arc-shaped plates adapted to the circumference of the cup body 10 .

[0097] In implementation example 6, the substrate 31 includes a vertical segment extending vertically and an annular segment connected above the vertical segment and extending in a ring shape, the annular segment surrounds the outer circumference of the cup body 10, the cup cover capacitor electrode 33 is arranged on the annular segment, and the liquid level capacitor electrode 32 is arranged on the vertical segment.

[0098] More preferably, the cup cover capacitor electrode 33 is set to be annular on the annular segment. In this way, even if the induction member 21 on the cup cover 20 is sheet-shaped, the cup cover 20 can be installed in any orientation and the cup cover capacitor electrode 33 can be reliably triggered when the cover height is reached, thereby realizing the position detection of the cup cover 20.

[0099] In a preferred embodiment, referring to implementation example 1, the minimum distance L1 between the cup cover capacitor electrode 33 and the adjacent liquid level capacitor electrode 32 satisfies: 5 mm ≤ L1 ≤ 30 mm.

[0100] Of course, the above distance setting is also applicable to other implementation examples other than implementation example 1.

[0101] By setting the minimum distance L1 between the cup cover capacitor electrode 33 and the adjacent liquid level capacitor electrode 32 at 5mm-30mm, L1 is prevented from being too small, so as to reduce the risk of detection interference between the cup cover capacitor electrode 33 and the liquid level capacitor electrode 32, and prevent the liquid level from triggering the cup cover capacitor electrode 33 to cause an abnormal alarm of the machine, and prevent the cup cover capacitor electrode 33 from being triggered by mistake when the user adds water to the cup body 10, and also prevent the induction element 21 of the cup cover 20 from affecting the detection of the liquid level capacitor electrode 32, thereby reducing the probability of false triggering, and ensuring accurate lid closing detection and liquid level detection; and avoiding L1 from being too large, which causes the height of the cup body 10 to be too large, the space utilization rate to be low, and the overall volume of the food processing machine to be too large. Therefore, satisfying 5mm≤L1≤30mm can improve the detection accuracy and space utilization rate.

[0102] In a preferred embodiment, referring to implementation example 1, 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 electrode 32 includes 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.

[0103] By setting a water level detection area and an anti-overflow detection area above the water level detection area in the liquid level detection area, and correspondingly setting multiple water level capacitor electrodes 321 and multiple anti-overflow capacitor electrodes 322, the food processing machine can realize the function of heating liquids of different capacities. At the same time, anti-overflow detection is performed at different heights when heating liquids of different capacities, thereby achieving sufficient heating and boiling, shortening the anti-overflow detection time, saving the heating power of the heating device, saving energy, and realizing more intelligent production of slurry beverages.

[0104] For example, the water level capacitor electrode 321 is provided with four detections from bottom to top, respectively, for dry burning detection, water level detection at the first height, water level detection at the second height, and water level detection at the third height. The anti-overflow capacitor electrode 322 corresponds to the anti-overflow detection at the first height, the anti-overflow detection at the second height, and the anti-overflow detection at the third height from bottom to top. Therefore, compared to the case where only one anti-overflow capacitor electrode 322 is provided, when preparing ingredients of different capacities, the corresponding anti-overflow capacitor electrode 322 is used for detection, thereby avoiding unnecessary boiling and heating, shortening the anti-overflow detection time, saving the heating power of the heating device, saving energy, and realizing a more intelligent production of slurry beverages.

[0105] More preferably, if Figure 2 As shown, the distance between the cup cover capacitor electrode 33 and the adjacent anti-overflow capacitor electrode 322 is L1, and the distance between adjacent anti-overflow capacitor electrode 322 is L2, satisfying: L1>L2.

[0106] When the cup cover capacitor electrode is located on the upper end surface of the substrate, L1 is the vertical height difference between the cup cover capacitor electrode 33 and the adjacent anti-overflow capacitor electrode 322 .

[0107] More preferably, the detection height H1 of the cup cover capacitor electrode 33, the detection height H2 of the anti-overflow capacitor electrode 322, and the detection height H3 of the water level capacitor electrode 321 satisfy: H1≥H2>H3.

[0108] By setting L1>L2, the cup cover capacitor electrode 33 and the anti-overflow capacitor electrode 322 can be well isolated to reduce the risk of detection interference between the cup cover capacitor electrode 33 and the liquid level capacitor electrode 32, prevent the liquid level from triggering the cup cover capacitor electrode 33 to cause an abnormal alarm of the machine, and prevent the cup cover capacitor electrode 33 from being mistakenly triggered when the user adds water to the cup body 10. Therefore, the probability of false triggering is reduced and the lid closing detection is accurate.

[0109] By setting H1≥H2>H3, the area and size of the cup cover capacitor electrode 33 and the anti-overflow capacitor electrode 322 can be expanded to improve the signal strength of the cup cover 20 detection and anti-overflow detection, and improve the detection accuracy. During the process of preparing soy milk in the food processor, a large amount of foam appears on the upper layer of the liquid, and the foam makes the capacitance value of the capacitor electrode change weaker than that of the slurry, generating a weaker signal. Therefore, by setting H2>H3, the detection signal strength of the anti-overflow capacitor electrode 322 can be improved to effectively avoid the safety risk of overflow of foam slurry.

[0110] Of course, in practice, different capacitor electrodes may be arranged with equal widths, H1 = H2 = H3. Also, the capacitor electrodes may be square, circular or in other shapes.

[0111] It should be noted that the food processor in the present invention is not limited to the wall breaking machine provided above. In fact, the food processor can also be a traditional soymilk machine, as shown in Example 7. Figure 5 The food processor includes a stirring device 40 and a motor 50 , which 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 cup body 10 .

[0112] Of course, the food processor can also be in the form of a wall-breaking machine with a detachable cup body, such as a motor 50 is arranged in the base, and a crushing device coupled to the motor 50 is arranged at the bottom of the cup body 10.

[0113] The food processor comprises a base, and the cup body 10 is detachably mounted on the base, so that the user can conveniently disassemble the cup body 10 to pour out the liquid or clean the cup body 10 independently, thereby reducing the risk of water entering the base, having a reliable structure, and extending the service life.

[0114] In addition, the food processor can also be a non-heating food processor, such as a juicer, which can prepare cold drinks by arranging a crushing device in the cup body. Since the cup cover is provided with a sensor, the sensor is used to trigger the cup cover capacitor electrode to generate a capacitance value to detect whether the cup cover is closed. Therefore, problems such as liquid splashing and spraying caused by the crushing device working when the cup cover is not closed can be avoided.

[0115] The parts not described in the present invention can be realized by adopting or drawing on the existing technology.

[0116] 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.

[0117] The above are only embodiments of the present invention and are 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 replacement, 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 food processing machine with integrated detection, characterized in that: It includes a non-metallic cup body, a cup cover covering the cup body, a detection plate installed on the outside of the cup body, and a crushing device located in the cup body, the detection plate includes a substrate, a capacitor electrode installed on the substrate, the substrate is provided with a liquid level detection area, the capacitor electrode includes a liquid level capacitor electrode arranged in the liquid level detection area and a cup cover capacitor electrode located above the liquid level detection area, the cup cover is provided with a sensor, and the sensor is used to trigger the cup cover capacitor electrode to generate a capacitance value to detect whether the cup cover is closed in place.

2. A food processing machine with integrated detection according to claim 1, characterized in that: The food processing machine also includes a control system for real-time acquisition of the capacitance value generated by the cup cover capacitor electrode and processing the capacitance value, the control system includes a processing chip, and the processing chip is mounted on the substrate; Alternatively, the food processor also includes a control system for real-time acquisition of the capacitance value generated by the cup cover capacitor electrode and processing it, the control system includes a control board, a processing chip is provided on the control board, and the control board is electrically connected to the detection board.

3. The food processing machine with integrated detection according to claim 1, characterized in that: The food processor also includes a control system for real-time acquisition of the capacitance value V generated by the cup cover capacitor electrode and processing the capacitance value V, and the control system includes a processing chip storing a preset value Vd so as to compare and process the capacitance value V with the preset value Vd.

4. The food processing machine with integrated detection according to claim 1, characterized in that: The cup cover comprises a cover body and a limiting wall extending from the cover body into the cup body, and the induction element is located on the limiting wall so as to correspond laterally to the cup cover capacitor electrode after the cup cover is closed.

5. The food processing machine with integrated detection according to claim 4, characterized in that: The sensing element is integrally injection-molded inside the limiting wall; Alternatively, a sealing ring is fixedly sleeved on the outer periphery of the limiting wall, and the sealing ring covers the outer side 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 induction element is an induction sheet.

6. The food processing machine with integrated detection according to claim 1, characterized in that: The cup cover has a lower end surface covering the cup mouth of the cup body, the induction element is arranged at the edge of the lower end surface, and the minimum distance between the induction element and the cup cover capacitor electrode after the cup cover is closed is S, and S≤10mm; Alternatively, the cup cover is a metal cup cover, and the sensing element is the metal cup cover itself.

7. The food processing machine with integrated detection according to claim 1, characterized in that: The liquid level capacitor electrode and the cup cover capacitor electrode are both arranged on the side of the substrate facing the cup body; Alternatively, the liquid level capacitor electrode is arranged on the side of the substrate facing the cup body, and the cup cover capacitor electrode is arranged on the upper end surface of the substrate; Alternatively, the minimum distance L1 between the cup cover capacitor electrode and an adjacent liquid level capacitor electrode satisfies: 5mm≤L1≤30mm.

8. The food processing machine with integrated detection according to claim 1, characterized in that: 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 electrode includes a plurality of water level capacitor electrodes arranged in the water level detection area and a plurality of anti-overflow capacitor electrodes arranged in the anti-overflow detection area.

9. The food processing machine with integrated detection according to claim 8, characterized in that: The distance between the cup cover capacitor electrode and the adjacent anti-overflow capacitor electrode is L1, and the distance between adjacent anti-overflow capacitor electrode is L2, satisfying: L1>L2; Alternatively, the detection height H1 of the cup cover capacitor electrode, the detection height H2 of the anti-overflow capacitor electrode, and the detection height H3 of the water level capacitor electrode satisfy: H1≥H2>H3.

10. The food processing machine with integrated detection according to claim 1, characterized in that: The food processor further comprises a motor for driving a stirring device, wherein the stirring device is mounted at the bottom of the cup body, the motor is fixed below the cup body, and the rotating shaft of the motor passes through the bottom wall of the cup body and is connected to the stirring device; Alternatively, the food processor further comprises a motor driving a stirring device, the stirring device and the motor are fixed on the cup cover, and the stirring device is driven by the motor and extends into the cup body; Alternatively, the food processor further comprises a base, and the cup body is detachably mounted on the base.

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