Infant milk brewing device capable of accurately and automatically weighing

Abstract

The invention provides a precise automatic weighing infant milk brewing device which comprises a powder outlet control system and a water outlet control system, the powder outlet control system comprises a powder bag, a metering powder outlet assembly, a weighing assembly and a control unit, and the control unit is configured to execute staged precise powder outlet control. Comprising the steps of controlling a metering powder discharging assembly to execute a basic powder discharging stage to output milk powder of an initial preset amount; when the real-time weight value fed back by the weighing assembly reaches a preset threshold value, the powder metering and discharging assembly is paused; according to the real-time weight value and the number of discharged powder grids of the metering powder discharging assembly, the actual unit powder discharging amount of the metering powder discharging assembly is calculated; according to the target total powder amount and the real-time weight value, the needed compensation powder amount is calculated; and the metering powder discharging assembly is controlled to execute a compensation powder discharging stage, so that milk powder corresponding to the compensation powder amount is output based on the actual unit powder discharging amount. In this way, high-precision metering can be achieved, self-adaption to different brands can be achieved, and errors can be automatically compensated.

Description

Technical Field

[0001] This invention relates to the field of infant and toddler products technology, and in particular to a precise automatic weighing infant formula preparation device. Background Technology

[0002] Currently, the most common baby formula preparation aids on the market are constant temperature formula warmers (thermos) and manual mixing shakers. Parents or caregivers still need to manually complete the two most crucial steps when preparing formula: taking the formula powder and weighing it.

[0003] The traditional milk preparation process has the following significant drawbacks and technical defects:

[0004] 1. Difficulty in ensuring weighing accuracy: Parents usually use a formula scoop to measure formula and then "level" it to determine the correct amount. This method relies entirely on subjective operation; the force, angle, and looseness of the formula can all lead to significant errors in the actual weight of each scoop. Long-term inaccurate formula concentration (too concentrated or too diluted) can burden the infant's kidneys and digestive system, affecting healthy growth.

[0005] 2. Cumbersome and inefficient operation: Especially at night or when the baby is crying urgently, parents need to perform multiple operations such as scooping, leveling, and pouring in the dark, which makes them nervous and prone to making mistakes (such as spilling or forgetting how many spoonfuls have been scooped), and the process is time-consuming and laborious.

[0006] 3. Hygiene conditions are easily contaminated: When manually scooping milk powder, hands and milk powder scoops are very likely to come into contact with the bottle opening or other items, which poses a risk of introducing bacteria and insufficient hygiene and safety guarantees.

[0007] To address the aforementioned issues, some "automatic formula dispensers" have emerged in the market; these products typically dispense formula powder in precise quantities using a constant-volume screw conveyor or pre-set slots. However, these solutions still have inherent drawbacks:

[0008] 1) The accuracy of the volumetric method is greatly affected by the material characteristics: The amount of powder dispensed by the spiral propulsion method depends on the density, flowability, particle size, and dryness of the milk powder. Different brands, and even different batches of the same brand, have different physical properties, and milk powder is prone to moisture absorption and clumping, resulting in a large deviation between the actual dispensed powder weight and the theoretical weight corresponding to the preset volume, making it impossible to achieve true accuracy.

[0009] 2) Poor adaptability: The machine usually needs to be calibrated for a specific brand of milk powder. After changing the brand of milk powder, the accuracy drops sharply, resulting in a poor user experience.

[0010] 3) Lack of feedback and calibration: Most products do not have a weighing feedback mechanism for the actual powder output. They are just an "open-loop" execution system, which cannot know whether the actual powder output is accurate, let alone automatically correct errors.

[0011] Therefore, there is an urgent need in this field for an infant formula preparation device that can fundamentally solve the problem of accurate measurement of milk powder weight, and also has the characteristics of high efficiency, hygiene and intelligence. Summary of the Invention

[0012] The purpose of this invention is to provide an intelligent device that integrates automatic and accurate weighing functions for quickly and accurately preparing infant formula.

[0013] To achieve the above objectives, the present invention provides a precise automatic weighing infant formula preparation device, comprising a powder dispensing control system for storing and dispensing formula powder and a water dispensing control system for providing and controlling water for formula preparation. The powder dispensing control system includes a powder container, a metering powder dispensing component, a weighing component, and a control unit. The powder container holds the formula powder, the metering powder dispensing component is connected to the powder container to dispense a quantitative amount of formula powder from the container, and the weighing component is positioned along the dispensing path of the metering powder dispensing component to detect the weight of the dispensing formula powder in real time and transmit the weight signal to the control unit.

[0014] The control unit is configured to perform phased, precise powder dispensing control, including:

[0015] The metering powder dispensing component is controlled to perform the basic powder dispensing stage, so as to output an initial predetermined amount of milk powder through the powder grid quantitative method;

[0016] The weighing component provides real-time feedback on the weight value and the number of powder dispensed cells. When the number of powder dispensed cells reaches a preset threshold, the powder dispensing component is paused.

[0017] The actual unit powder dispensing amount of the metering powder dispensing component is calculated based on the real-time weight value of the milk powder output when the preset threshold is reached and the number of powder dispensing cells.

[0018] The required amount of compensation powder is calculated based on the target total powder quantity and the real-time weight value;

[0019] The metering powder dispensing component is controlled to perform a compensation powder dispensing stage, so as to output milk powder corresponding to the compensation powder amount based on the actual unit powder dispensing amount.

[0020] Furthermore, the metering powder dispensing component includes:

[0021] A powder measuring disc is rotatably mounted at the bottom of the powder container, and the powder measuring disc is provided with multiple powder compartments for holding a fixed amount of milk powder.

[0022] A driving component is connected to the powder quantity measuring disk to drive the powder quantity measuring disk to rotate, so that the powder grid passes through the powder loading position and the powder discharging position in sequence.

[0023] Furthermore, the powder dispensing assembly also includes a stirring wheel disposed inside the powder hopper. The stirring wheel is synchronously driven by the driving component to agitate the milk powder inside the powder hopper to ensure that it is filled into the powder compartment of the powder measuring plate.

[0024] Furthermore, it also includes a Hall switch, which is used to detect the number of rotations of the powder quantity measuring disk and transmit the number of rotations signal to the control unit.

[0025] Furthermore, during the powder compensation stage, the control unit controls the drive component to drive the powder quantity measuring disk to rotate in a pulse manner, and the powder quantity driven by a single pulse is less than or equal to 0.5 grams.

[0026] Furthermore, the weighing component includes:

[0027] A weighing tray is placed below the powder outlet of the metering powder dispensing component to catch the falling milk powder.

[0028] A high-precision load cell is connected to the weighing tray to detect changes in weight on the weighing tray and feed them back to the control unit.

[0029] Furthermore, the control unit is further configured to:

[0030] The real-time weight value when the preset threshold is reached is divided by the number of powder dispensed by the powder dispensing component to obtain the actual average weight of powder in each dispenser.

[0031] Furthermore, the water outlet control system includes:

[0032] The external water tank is used to store water for preparing formula;

[0033] The inner water tank is connected to the outer water tank via an inner and outer water tank connector to obtain the water for making milk delivered by the outer water tank;

[0034] A heating element for heating the water in the inner water tank;

[0035] A temperature sensing component is used to detect the water temperature inside the inner water tank;

[0036] A water pump is used to extract water from the inner water tank for making milk;

[0037] A water flow metering component is used to measure the water output from the inner water tank;

[0038] The control unit is connected to the heating component, the temperature sensing component, the water pump, and the water flow metering component to control the outlet water temperature and the outlet water volume.

[0039] Furthermore, it also includes a mixing funnel located below the weighing assembly;

[0040] The powder outlet of the metering powder dispensing component and the water outlet of the water pump both face the mixing funnel, so that the milk powder and water are mixed in the mixing funnel.

[0041] Furthermore, the control unit is also connected to a human-machine interface for receiving the target total powder volume and target water volume set by the user.

[0042] The precise automatic weighing infant formula preparation device provided by this invention uses a high-precision weighing sensor installed along the powder dispensing path to monitor and provide feedback on the actual amount of powder dispensed in real time. Based on this feedback, the system intelligently judges the powder dispensing status and, through a set "staged dispensing" control method, performs precise pulse compensation and calibration on the remaining powder amount based on real-time weighing data after the initial dispensing. This solution combines traditional "open-loop" constant-volume dispensing with innovative "closed-loop" weighing feedback, forming a "double-insurance" control, thereby fundamentally solving the problem of inaccurate measurement caused by differences in the physical properties of milk powder. It achieves precise measurement by mass (grams), unaffected by changes in milk powder brand, density, or state; automated operation simplifies the formula preparation process, especially suitable for scenarios such as nighttime; and it reduces human contact, ensuring the hygiene and safety of feeding and the health of the infant. Attached Figure Description

[0043] Figure 1 An exploded view of the precise automatic weighing baby formula preparation device provided in an embodiment of the present invention;

[0044] Figure 2 This is a block diagram illustrating the working principle of the precise automatic weighing baby formula preparation device according to an embodiment of the present invention.

[0045] Figure 3 This is a hardware block diagram of the electronic scale system of the precise automatic weighing baby formula preparation device provided in an embodiment of the present invention. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0047] It should be noted that references to "an embodiment," "embodiment," "example embodiment," etc., in this specification refer to the described embodiment including specific features, structures, or characteristics, but not every embodiment must include these specific features, structures, or characteristics. Furthermore, such expressions do not refer to the same embodiment. Moreover, when describing specific features, structures, or characteristics in conjunction with embodiments, whether or not explicitly described, it is indicated that incorporating such features, structures, or characteristics into other embodiments is within the knowledge of those skilled in the art.

[0048] Figures 1-3 This invention illustrates a precise automatic weighing infant formula preparation device according to an embodiment of the present invention. It includes a powder dispensing control system for storing and dispensing formula powder and a water dispensing control system for providing and controlling water for formula preparation. The powder dispensing control system includes a powder container 5, a metering powder dispensing component, a weighing component, and a control unit 31. The powder container 5 is used to hold formula powder. The metering powder dispensing component is connected to the powder container 5 to dispense a quantitative amount of formula powder from the powder container 5. The weighing component is positioned on the dispensing path of the metering powder dispensing component to detect the weight of the dispensing formula powder in real time and transmit the weight signal to the control unit 31.

[0049] Control unit 31 is configured to perform phased precision powder dispensing control, consisting of a basic powder dispensing phase and a compensation powder dispensing phase, specifically including:

[0050] The metering powder dispensing component is controlled to perform the basic powder dispensing stage, so as to output an initial predetermined amount of milk powder through the powder grid quantitative method;

[0051] The weighing component provides real-time feedback on the weight value and the number of powder dispensed cells. When the number of powder dispensed cells reaches a preset threshold, the powder dispensing component is paused.

[0052] The actual unit powder dispensing amount of the metering powder dispensing component is calculated based on the real-time weight value of the milk powder and the number of powder dispensing cells that have been output when the preset threshold is reached.

[0053] Calculate the required amount of compensation powder based on the target total powder quantity and the real-time weight value;

[0054] The metering powder dispensing component is controlled to perform a compensation powder dispensing stage, so as to output milk powder corresponding to the compensation powder amount based on the actual unit powder dispensing amount. In specific implementation, during the compensation powder dispensing stage, the control unit 31 controls the driving component to drive the powder quantity measuring disk 4 to rotate in a pulse manner, and the powder dispensing amount driven by a single pulse is less than or equal to 0.5 grams.

[0055] The preset threshold in this embodiment can be set according to the target total powder weight set by the user. For example, it can be set to 80% of the target total powder weight. The 80% powder weight specifically refers to 80% of the calibrated total number of powder cells determined based on the target total powder weight.

[0056] The powder dispensing assembly of this embodiment includes a powder measuring disk 4 and a driving component 10. The powder measuring disk 4 is rotatably disposed at the bottom of the powder container 5, and has multiple powder compartments for holding a fixed amount of milk powder. The driving component 10 is driven by the powder measuring disk 4 to drive the powder measuring disk 4 to rotate, so that the powder compartments sequentially pass through the powder filling position and the powder dispensing position. Specifically, the driving component 10 is a powder stirring motor and a gearbox drive module, which is driven by the powder measuring disk 4 through a rotating shaft 6 to drive the powder compartments on the powder measuring disk 4 to sequentially pass through the powder filling position and the powder dispensing position. When the powder compartment reaches the powder filling position, the milk powder in the powder container 5 falls into the powder compartment under the action of gravity; when the powder compartment reaches the powder dispensing position, the milk powder in the powder compartment is released and discharged under the action of gravity.

[0057] The powder bag 5 has a cylindrical structure with an openable and closable powder bag cover 1 at the top, and a powder quantity measuring plate 4 is located at the bottom inside the powder bag 5.

[0058] The metering and dispensing assembly also includes a stirring wheel 2 disposed within the powder hopper 5. The stirring wheel 2 is synchronously driven by the driving component to agitate the milk powder within the powder hopper to ensure it fills the powder grids of the powder quantity measuring disk 4. As shown in the figure, in this embodiment, the powder quantity measuring disk 4 has four powder grids of the same size evenly distributed. The rotating shaft 6 synchronously drives the stirring wheel 2 to rotate the milk powder within the powder hopper 5. The powder powder is evenly divided into four small grids by the powder grids within the powder quantity measuring disk 4. Then, as the powder quantity measuring disk 4 rotates, when a powder grid reaches the dispensing position, the milk powder within the grid is released from the dispensing port at the bottom of the powder hopper 5, and the released milk powder falls onto the weighing component. Specifically, it also includes a Hall switch, which is used to detect the number of grids rotated by the powder quantity measuring disk 4 and transmit the grid number signal to the control unit 31.

[0059] The weighing component in this embodiment includes a weighing tray 7 and a high-precision weighing sensor 8. The weighing tray 7 is located below the powder outlet of the metering powder dispensing component to catch falling milk powder. The high-precision weighing sensor 8 is connected to the weighing tray 7 to detect weight changes on the weighing tray 7 and feed them back to the control unit 31. The high-precision weighing sensor 8 is fixed to the bottom of the weighing tray 7 and the top cover 27 of the machine body by fixing screws 9.

[0060] The control unit 31 is further configured to divide the real-time weight value when a preset threshold is reached by the number of powder dispensed by the metering powder dispensing component to obtain the actual average weight of each powder dispenser. That is, in this embodiment, during the basic powder dispensing stage, the metering powder dispensing component is first controlled to output the preset threshold of milk powder, and then the number of powder dispensed by the metering powder dispensing component at this time is obtained. The actual average weight of each powder dispenser is then calculated (due to the influence of density, flowability, particle size, and dryness of different brands of milk powder, the weight of milk powder with the same number of dispensers may not be the same). This achieves real-time online calibration of the physical properties of the currently used milk powder, dynamically converting traditional fixed-volume measurement into precise mass measurement, providing an accurate calculation benchmark for the subsequent compensation powder dispensing stage.

[0061] The water outlet control system includes an outer water tank 22, an inner water tank 17, a heating component 20, a temperature sensing component 18, a water pump 13, and a water flow metering component 12, wherein:

[0062] The outer water tank 22 is used to store water for preparing formula; the inner water tank 17 is connected to the outer water tank 22 via an inner-outer water tank connector 23 to obtain the water for preparing formula delivered by the outer water tank 22; the heating element 20 is used to heat the water in the inner water tank 17; the temperature sensing element 18 is used to detect the water temperature in the inner water tank 17; the water pump 13 is used to extract the water for preparing formula from the inner water tank 17 for formula preparation; the water flow metering element 12 is used to measure the water output of the inner water tank 17; the control unit 31 is connected to the heating element 20, the temperature sensing element 17, the water pump 13, and the water flow metering element 12 to control the water output temperature and water output.

[0063] The temperature sensing component 18 is specifically an NTC temperature sensor; the water flow metering component 12 is a water flow meter, which is installed and fixed to the water pump 13 through a first fixed bracket 14; the top of the inner water tank 17 is provided with an inner water tank cover 15, and the inner water tank 17 is also provided with a magnetic levitation switch. When the water level in the inner water tank 17 is low, the magnetic levitation switch 16 can promptly send a signal to the control unit 31 to remind the user to replenish water to the outer water tank 22 in time.

[0064] The heating element 20 is mounted on a second fixed bracket 21, and its top is connected to the bottom of the inner water tank 17 via a sealing ring 19.

[0065] The specific workflow of the water dispensing control system is as follows: the outer water tank 22 serves as the main water storage unit, and the water inside it is transported to the inner water tank 17 through the inner and outer water tank connector 23; the control unit 31 instructs the heating component 20 to heat the water in the inner water tank 17 according to the water temperature set by the user, and at the same time monitors the water temperature in real time through the temperature sensing component 18 and dynamically adjusts the heating state until the set temperature is reached and stabilized; when the user performs the milk preparation operation, the control unit 31 starts the water pump 13 to pump out the water that has reached the predetermined temperature, and simultaneously measures the water dispensing volume in real time through the water flow metering component 12; the control unit 31 compares the cumulative water dispensing volume fed back by the water flow metering component 12 with the target water volume set by the user, and immediately shuts off the water pump 13 when the target water volume is reached, thereby completing a fixed-temperature and fixed-quantity water dispensing operation.

[0066] It also includes a mixing funnel 29, located below the weighing assembly; the powder outlet of the metering powder dispensing assembly and the water outlet of the water pump 13 both face the mixing funnel 29, so that the milk powder and water are mixed within the mixing funnel 29. Specifically, the top opening of the mixing funnel 29 faces the powder outlet of the weighing assembly, and the mixing funnel 29 also has a water inlet, at which a one-way shut-off valve 28 is installed and connected to the water pump 13. When preparing milk, the milk powder falls from the powder outlet onto the inner wall of the mixing funnel 29, and water flows through the one-way shut-off valve 28 into the upper part of the inner wall of the mixing funnel 29, flushing out the milk powder.

[0067] The control unit 31 is also connected to a human-machine interface 30 for receiving the target total powder volume and target water volume set by the user. As shown in the figure, the control unit 31 in this embodiment is specifically a control board PCBA, and the human-machine interface is a control panel connected to the control board PCBA; the outer shell 11 is mounted on the base 25, and the outer shell 11 also has a built-in power board PCBA 26; the control panel is located on the outer surface of the outer shell 11, the powder dispensing control system is mounted on the top of the outer shell 11, the outer water tank 22 of the water dispensing control system is mounted on the rear cover 24 of the machine on the side rear of the outer shell 11, the inner water tank 17 is mounted inside the outer shell 11, and the mixing funnel 29 is mounted directly below the powder dispensing control system, and the milk bottle receiving position is directly below the mixing funnel 29.

[0068] In one specific embodiment, the phased precise powder dispensing control performed by the control unit 31 operates on the following principle and process:

[0069] First, the user sets the desired total powder weight through the human-computer interaction interface and starts the milk preparation program. After receiving the milk dispensing command, the control unit 31 first drives the weighing component to perform a zeroing operation to establish an accurate weighing reference.

[0070] Subsequently, the system enters the basic powder dispensing stage. The control unit 31 controls the metering powder dispensing component (specifically, drives the powder quantity measuring disk to rotate) to start dispensing powder. During this stage, the system operates according to the preset initial number of powder dispensing cells corresponding to the target total powder weight. When the system detects through a Hall switch that the number of powder cells already output has reached approximately 80% of the preset total number of cells (i.e., reaching a preset threshold), the metering powder dispensing component is paused.

[0071] At this pause point, the control unit 31 performs crucial data processing and calibration calculations: it acquires the real-time weight value fed back by the weighing component; it divides this real-time weight value by the number of powder-discharged cells detected by the Hall switch to accurately calculate the actual average mass of powder in each cell under the current operating conditions. That is, the first 80% of the powder is dispensed according to the predetermined number of cells, and the last 20% is compensated based on the amount of powder dispensed per cell in the first 80%.

[0072] Next, the system enters the compensation powder dispensing stage. The control unit 31 first calculates the amount of compensation powder required to reach the target total powder weight, i.e.: compensation powder amount = target total powder weight - current real-time weight value. Subsequently, based on the calculated actual unit powder dispensing amount, the system controls the metering powder dispensing component to output milk powder corresponding to the compensation powder amount in a small-dose pulse drive mode (ensuring that the powder dispensing amount of a single pulse drive is not greater than 0.5g), until the total weight fed back by the weighing component is consistent with the target total powder weight.

[0073] In this embodiment, the "80% threshold weighing" and "20% powder replenishment" are a synergistic and progressive dual-precision guarantee system. They are not dependent on each other for "error compensation," but rather a combination of "basic measurement + dynamic optimization" technologies. Essentially, it breaks down "one-time powder dispensing" into "80% main powder dispensing + 20% precise powder replenishment": the first 80% relies on the physical powder capacity measurement method of the powder volume measuring disc (single-cell powder volume) in the powder bag to complete the basic measurement, combined with real-time feedback from the weighing module of 80% powder weight. The latter 20% is replenished through small-dose pulse powder replenishment (the amount replenished in a single pulse is ≤0.5g). The 80% percentage is merely a hypothetical critical point, mainly to provide the weighing module with a real-time and accurate powder weight value. The remaining amount of powder to be replenished is the total powder weight to be dispensed - the so-called "80%" threshold weight. This dual-system collaboration operates on a precise logic of 1+1>2. The weighing module addresses the fundamental issue of measurement accuracy, while the subsequent 20% powder replenishment addresses the upgrade issue of scenario adaptability. The former ensures "accuracy at the starting point," and the latter ensures "precision at the end point." The combination of the two forms a dynamic closed-loop control. Weighing data guides the powder replenishment method, and the powder replenishment operation verifies accuracy through weighing data. This technological innovation takes into account the physical characteristics of different milk powders. Milk powders have different concentrations, but as long as the user opens the set amount of milk powder, the machine can accurately replenish the milk powder.

[0074] Figure 2The overall system collaboration logic of this embodiment is illustrated. The control unit 31, acting as the central processing core, receives instructions and signals from two sources: first, instructions from the user input interface (such as setting powder quantity, water quantity, and water temperature); and second, real-time feedback signals from various sensors. Based on this information, the control unit 31 issues precise control commands to the powder dispensing control system (specifically, the drive motor) and the water dispensing control system (specifically, the water pump and heater). The entire process forms a complete intelligent closed-loop control: when the powder dispensing system performs quantitative powder dispensing, its actual powder weight is monitored in real-time by the weighing component and fed back to the control unit for dynamic compensation; while the water dispensing system ensures that the water quantity and temperature meet the settings based on feedback from the flow meter and temperature sensor; finally, the water and powder are mixed and output in the mixing device.

[0075] Figure 3 The core hardware architecture for achieving high-precision weighing is illustrated. The entire electronic scale system uses a microprocessor (such as an STC90C52RC microcontroller) as its control core. Its workflow is as follows: The weak weight signal sensed by the load cell (HL-8 type) is first sent to a dedicated high-precision, 24-bit analog-to-digital (A / D) converter chip (HX711) for amplification and digitization; the converted digital signal is received and processed by the microprocessor. The processing results are displayed and parameters are set through a human-machine interface (including a dot-matrix LCD display and a 4x4 matrix keypad). In addition, the system can integrate a clock module (DS1302 chip) for time recording, as well as a voice module and buzzer for voice announcement and status alarm functions.

[0076] In summary, the core of this invention lies in constructing a dual-guarantee system combining "basic measurement and dynamic optimization." The basic powder dispensing stage utilizes the physical volume determination of the powder quantity measuring plate to achieve rapid and stable basic measurement; the compensation powder dispensing stage relies on real-time weighing feedback for precise fine-tuning. This dynamic closed-loop control strategy, which breaks down a single powder dispensing process into "main powder dispensing + precise powder replenishment," effectively overcomes measurement errors caused by differences in the density, flowability, and other physical properties of different brands and batches of milk powder. The weighing module ensures the accuracy of the measurement benchmark, while intelligent powder replenishment guarantees the precision of the final result. Working together, the two enable the device to adapt to various milk powders, ultimately achieving precise powder dispensing based on mass (gram weight).

[0077] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of the present invention is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0078] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. A precision automatic weighing baby milk mixing device, characterized in that, The milk powder outlet control system comprises a powder pocket, a metering powder outlet assembly, a weighing assembly and a control unit. The powder pocket is used to contain milk powder. The metering powder outlet assembly is connected with the powder pocket for quantitatively outputting the milk powder in the powder pocket. The weighing assembly is arranged on the powder outlet path of the metering powder outlet assembly for detecting the weight of the output milk powder in real time and transmitting the weight signal to the control unit. The control unit is configured to perform a staged precise powder outlet control, comprising: controlling the metering powder outlet assembly to perform a basic powder outlet stage to output an initial predetermined amount of milk powder by a powder cell quantification method; acquiring the real-time weight value and the number of powder cells fed back by the weighing assembly in real time, and pausing the metering powder outlet assembly when the number of powder cells reaches a preset threshold; calculating the actual unit powder output amount of the metering powder outlet assembly according to the real-time weight value and the number of powder cells fed back when the preset threshold is reached; calculating the required compensation powder amount according to the target total powder amount and the real-time weight value; controlling the metering powder outlet assembly to perform a compensation powder outlet stage to output milk powder corresponding to the compensation powder amount based on the actual unit powder output amount.

2. The precision automatic weighing baby milk device according to claim 1, characterized in that, The metering powder outlet assembly comprises: a powder amount measuring disc rotatably arranged at the bottom of the powder pocket, the powder amount measuring disc being provided with a plurality of powder cells for containing a predetermined amount of milk powder; a driving component in transmission connection with the powder amount measuring disc for driving the powder amount measuring disc to rotate so that the powder cells pass through a powder filling position and a powder outlet position in sequence.

3. The precision automatic weighing baby milk device according to claim 2, characterized in that, The metering powder outlet assembly further comprises a stirring wheel arranged in the powder pocket, the stirring wheel being synchronously driven by the driving component to disturb the milk powder in the powder pocket to ensure that the milk powder is filled into the powder cells of the powder amount measuring disc.

4. The precision automatic weighing baby milk device according to claim 2, wherein, A Hall switch is further included for detecting the number of cells of the powder amount measuring disc and transmitting a cell number signal to the control unit.

5. The precision automatic weighing baby milk device according to claim 2, wherein, In the compensation powder outlet stage, the control unit controls the driving component to drive the powder amount measuring disc to rotate in a pulse manner, and the powder output amount driven by a single pulse is less than or equal to 0.5g.

6. The precision automatic weighing baby milk device according to claim 1, wherein, The weighing assembly comprises: a weighing tray arranged below the powder outlet port of the metering powder outlet assembly for receiving the falling milk powder; a high-precision weighing sensor connected with the weighing tray for detecting the weight change on the weighing tray and feeding back to the control unit.

7. The precision automatic weighing baby milk device according to claim 1, wherein, The control unit is further configured to: divide the real-time weight value when the preset threshold is reached by the number of powder cells of the metering powder outlet assembly to obtain the actual average weight of each cell of powder.

8. The precision automatic weighing baby milk device according to claim 1, wherein, The water outlet control system comprises: an outer water tank for storing milk-making water; an inner water tank connected with the outer water tank through an inner-outer water tank connector for obtaining the milk-making water delivered by the outer water tank; a heating component for heating the water in the inner water tank; a temperature sensing component for detecting the water temperature in the inner water tank; a water pump for pumping out the milk-making water in the inner water tank for milk-making. A water flow metering component is arranged to meter the water output of the inner water tank; The control unit is connected to the heating component, the temperature sensor component, the water pump and the water flow metering component to control the water temperature and water output.

9. The precision automatic weighing baby milk device according to claim 8, characterized in that, A mixing funnel is further included and arranged below the weighing assembly; The powder outlet of the powder metering assembly and the water outlet of the water pump are both directed towards the mixing funnel so that the milk powder and water are mixed in the mixing funnel.

10. The precision automatic weighing baby milk device according to claim 1, wherein, The control unit is further connected to a human-machine interface to receive the target total powder amount and target water amount set by the user.

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