Continuous extraction storage tea maker

Abstract

The application discloses a continuous extraction and storage type tea making machine, which comprises a tea bowl, a cold water pipe, a cold water pump, an instant water heater and two or more than two closed tea soup storage devices, and can complete the complete process of water feeding, heating, brewing, diversion, storage, tea soup outputting and cleaning. The tea bowl adopts a streamlined tapered integrated structure which is wide at the top and narrow at the bottom, and is internally provided with an integrated vertical partition filter screen which is divided into a tea placing cavity and a clear liquid cavity, and has the functions of beauty and solid-liquid separation. The closed tea soup storage devices are matched with tea soup outputting lifting devices, and are controlled based on manual operation or pure hardware circuit, without programming, so that the automatic control of tea soup outputting, sealing and aeration is realized. The tea soup is divided into each storage device for heat preservation through a first tea soup diverter, is collected and outputted through a second tea soup diverter, and the switching between tea outputting and cleaning is realized through a one-in and two-out drainage valve. The tea making machine has the advantages of compact structure, reliable sealing, strong adaptability, and convenience for batch production and use.

Description

Technical Field

[0001] This invention relates to the field of tea brewing machine technology, and in particular to a continuous extraction and storage type tea brewing machine. Background Technology

[0002] With the fast pace of modern life and the increasing integration of technology into traditional lifestyles, automated tea brewing machines (or intelligent tea maker machines) have emerged, aiming to simplify the tea brewing process and provide a convenient tea-drinking experience. Existing automated tea brewing technologies primarily focus on automating a single process, and their typical operating modes can be summarized as follows:

[0003] 1. Single-brew-instant drinking mode: This is currently the most common mode for smart tea makers. The user puts in tea leaves, sets parameters (such as water temperature and time), and the machine automatically completes one round of water pouring, steeping, and dispensing. The tea flows directly into a single teacup or serving cup placed below for drinking. If further brewing is desired, the user must manually remove the used tea container, place a new container, and restart the brewing program. Its core drawback is that it interrupts the core enjoyment and ritual of Chinese tea ceremony: "continuous brewing and comparative tasting." Users cannot conveniently enjoy different brewing times (such as "first brew," "second brew," and "third brew") of the same tea leaves immediately, losing the crucial element of experiencing the changing layers of tea flavor. For example, Chinese Patent No. 202410903517.5 discloses an automatic tea maker and its usage method, mainly relating to the field of automatic tea maker technology. The invention includes a base plate, three teacups, and a brewing device. A support base is fixedly connected to the upper surface of the base plate, and a fixed base is mounted on the upper surface of the support base. An inlet pipe is connected to the upper surface of the fixed base, and a connecting arm is rotatably connected to the inner wall of the fixed base. A hot water pipe is connected to the lower surface of the connecting arm. The brewing device is located on the upper surface of the support base and includes a water outlet ring and a cup lid. The water outlet ring is fixedly connected to the upper surface of the support base, and a water outlet pipe is connected to the outer wall of the water outlet ring. A positioning plate is fixedly connected to the inner wall of the water outlet ring. The beneficial effects of this invention are: when hot water enters the teapot, it can stir the hot water and tea leaves inside the teapot. Stirring helps the tea leaves to come into more even contact with the hot water, promotes the dissolution of the effective components in the tea leaves into the water, and makes the tea soup more concentrated and better in taste.

[0004] The existing technology has the following drawbacks: it can only brew tea in one teacup or multiple teacups in sequence; users cannot conveniently taste the tea soup from different brewing times (such as "first brew", "second brew", "third brew") of the same tea leaves at the first time.

[0005] 2. Programmed Continuous Brewing - Mixed Mode: Some high-end machines implement programmed continuous multiple brewing. The machine can automatically complete multiple water pours, steeping, and dispensing according to preset parameters. However, these designs usually divert all brews into the same storage container or directly mix them. While this increases output, it completely sacrifices the independence and unique flavor of each brew. For users who appreciate the art of tea tasting, mixing different brews is seen as destroying the flavor of the tea and cannot meet the needs of professional tasting and comparison.

[0006] In conclusion, the fundamental contradiction facing existing automated tea-brewing technology lies in its failure to truly respect and reproduce the essence of traditional tea art—"one brew, one taste; distinct layers of flavor"—while pursuing convenience and automation. Its technological bottlenecks are mainly manifested in:

[0007] 1) Functional defect: It cannot automatically and physically isolate each individual tea infusion without human intervention.

[0008] 2) Experience gap: After storage, there is a lack of an intuitive, convenient, and error-proof system that allows users to freely and instantly access tea from a specified number of infusions.

[0009] 3) Design goal deviation: Existing designs are mostly aimed at "making a cup of tea" rather than "serving a complete tea tasting conversation".

[0010] Therefore, the market urgently needs a smart tea brewing device that can fully automate the entire brewing process, simulating the operation of a professional tea master. This device should be able to complete the entire brewing process from water pouring, temperature control, timing to pouring the tea, intelligently distribute each brew into an independent container and keep it warm, and ultimately allow users to easily and accurately obtain any specific brew of tea anytime, anywhere. This application aims to completely solve the aforementioned problems. Summary of the Invention

[0011] The purpose of this invention is to provide a continuous extraction and storage tea brewing machine that allows each brew of tea to be distributed to all individual containers and kept warm, or to be distributed to individual containers and kept warm, so that the end user can obtain any specific brew of tea as needed.

[0012] To solve, or at least partially solve, the above-mentioned technical problems, the present invention provides a storage-type tea brewing machine, comprising a tea bowl, a cold water pipe, a cold water pump, an instant water heater, and at least two sealed tea infusion storage containers; the cold water pipe is connected to the cold water inlet of the cold water pump, the cold water outlet of the cold water pump is connected to the cold water outlet of the instant water heater, and the hot water outlet of the instant water heater is connected to the hot water inlet of the tea bowl; the tea bowl is equipped with a filter screen, and the tea infusion outlet of the tea bowl is connected to the inlet of the hot water pump; the hot water pump outlet is connected to the inlet of a first tea infusion distributor, the first tea infusion distributor having a one-inlet-multiple-outlet structure, and the number of its outlet branches... Matching the number of sealed tea infusion containers, each tea outlet of the first tea infusion distributor is connected to a sealed tea infusion container via its own tea infusion pipe and tea infusion spout. Each sealed tea infusion container is equipped with a tea infusion lifting device and a tea infusion opening at the bottom. Each tea infusion opening is connected to the corresponding inlet of the second tea infusion distributor via a tea infusion pipe. The second tea infusion distributor has a multi-inlet, one-outlet structure. The total tea infusion outlet of the second tea infusion distributor is connected to the fairness cup via a total tea infusion outlet pipe and a one-inlet, two-outlet drain valve. The other outlet of the one-inlet, two-outlet drain valve is a rinsing outlet.

[0013] Furthermore, the inner cavity of the sealed tea infusion storage container is inverted conical in shape.

[0014] Furthermore, the tea outlet of the first tea diverter uses a spiral feeding method to feed liquid into the corresponding sealed tea storage container.

[0015] Furthermore, the one-in-two-outlet drain valve is composed of two two-position two-way solenoid valves connected in parallel. The inlets of the two two-position two-way solenoid valves are connected in parallel to form a total water inlet, which is connected to the total tea soup outlet pipe. The two outlets are the total tea soup outlet and the rinsing outlet, respectively.

[0016] Furthermore, the upper opening of the sealed tea infusion container is sealed with a lower sealing cover, the bottom of which has a conical upper opening. The venting sealing plug on the lifting rod of the tea infusion dispensing device is adapted to the conical upper opening of the lower sealing cover, and the tea infusion sealing plug on the lifting rod is adapted to the tea infusion dispensing opening at the bottom of the sealed tea infusion container. A preset distance is provided between the venting sealing plug and the tea infusion sealing plug. The lower sealing cover has a circular track, the inner cavity of which communicates with the conical upper opening. A upper sealing cover is fixed above the lower sealing cover, and the upper sealing cover has an opening for dispensing tea. The tea dispensing lifting device describes a moving pipe through which the lifting rod moves up and down, and the moving pipe is connected to the inner cavity of a circular track. The tea dispensing lifting device includes a lifting rod, a rotating gear, and a worm gear. The lifting rod is provided with an external gear, a vent sealing plug, and a tea dispensing sealing plug from top to bottom. The rotating gear includes an integrally formed internal gear, a worm gear, and a circular groove. The external gear of the lifting rod is worm-shaped and meshes with the internal gear of the rotating gear. The circular groove is embedded in the circular track of the sealing lower cover and can rotate relative to it. The worm gear meshes with the worm gear.

[0017] Furthermore, the lifting rod is composed of a worm-shaped external gear, which meshes with the motor shaft of the forward and reverse motor. The forward and reverse motor is connected to an external power source via microswitches and can be controlled to rotate in both directions. The microswitches are two normally closed waterproof microswitches, corresponding to the lower and upper limit positions of the lifting rod, respectively. The two microswitches, the motor drive board, and the DC regulated power supply constitute a control circuit. When the forward and reverse motor rotates forward, the lifting rod moves upward, opening the conical upper opening while simultaneously closing the tea dispensing opening at the bottom of the sealed tea infusion container. When the forward and reverse motor rotates in reverse, the lifting rod moves downward, closing the conical upper opening while simultaneously opening the tea dispensing opening at the bottom of the sealed tea infusion container.

[0018] Furthermore, the second tea diverter includes a lower cover, an upper cover, a tea outlet pipe, a tea inlet pipe, and a tea outlet pipe vertical movement mechanism. The upper cover and the lower cover are fixedly connected to form a sealed diversion cavity. The lower cover is provided with a number of tea inlet pipes matching the number of sealed tea storage containers. One end of each tea inlet pipe is connected to the diversion cavity, and the other end is connected to the tea outlet opening of the corresponding sealed tea storage container through the tea outlet pipe. The upper cover has a through channel in the center, through which the tea outlet pipe passes and is dynamically sealed with the channel at its lower part. The lower cover has a sealing ring and a sealing sleeve in the center corresponding to the channel position. The lower end of the tea outlet pipe can be pressed against the sealing ring to achieve a seal.

[0019] Furthermore, the tea infusion tube's up-and-down movement mechanism includes a forward and reverse geared motor and a driven gear. The driven gear has an internal and external double gear structure, including an external gear and an internal gear fixed coaxially. A worm gear structure is provided on the upper outer side of the tea infusion tube, which meshes with the internal gear of the driven gear. The external gear of the driven gear meshes with the motor shaft gear of the forward and reverse geared motor. A lip-shaped sealing ring is provided between the tea infusion tube and the central channel of the upper cover. The outer ring of the lip-shaped sealing ring is interference-fitted with the channel, and the inner lip is dynamically fitted with the tea infusion tube.

[0020] Furthermore, the tea dispensing tube moving up and down mechanism is equipped with up and down micro switches and a motor drive board. The up and down micro switches are respectively installed at the extreme positions of the tea dispensing tube moving up and down, and are used to detect the travel of the tea dispensing tube and trigger the forward and reverse reduction motor to start and stop.

[0021] Furthermore, the tea infusion tube moving up and down mechanism also includes a microcontroller control module. The microcontroller is electrically connected to the motor drive board, the forward and reverse geared motor, and the micro switch to form an automated control circuit. The power supply module uses a DC power supply and is equipped with a voltage regulator chip to provide a stable voltage for the microcontroller.

[0022] Compared with the prior art, the technical solution provided by this invention has the following advantages: Since tea can be brewed multiple times, continuous extraction is achieved; each brew of tea is distributed to all independent containers and kept warm by the first tea dispensing device (Example 1), and can also be combined with the second tea dispensing device of Example 2 to distribute each brew of tea to each independent container and keep warm, allowing the end user to obtain any specific brew of tea as needed (Example 2). This invention is characterized by its simple structure and ease of use. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of this application.

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A three-dimensional structural diagram of a continuous extraction and storage tea brewing machine;

[0026] Figure 2 for Figure 1 A schematic diagram of the internal three-dimensional structure after the outer shell is removed;

[0027] Figure 3 for Figure 2 A three-dimensional structural diagram of a sealed tea infusion storage container after cross-section;

[0028] Figure 4 An exploded three-dimensional structural diagram of a continuous extraction and storage tea brewing machine;

[0029] Figure 5 This is an exploded three-dimensional structural diagram of another type of continuous extraction and storage tea brewing machine;

[0030] Figure 6 for Figure 2 A three-dimensional structural diagram showing a sealed tea infusion storage container connected to a first tea infusion distributor and a second tea infusion distributor;

[0031] Figure 7 for Figure 2 A three-dimensional structural diagram showing a sealed tea infusion storage container connected to a first tea infusion distributor and a second tea infusion distributor, with the second tea infusion distributor being cut open.

[0032] Figure 8 for Figure 2 A three-dimensional structural diagram showing a sealed tea infusion storage container connected to a first tea infusion distributor and a second tea infusion distributor, and a cross-section of the sealed tea infusion storage container.

[0033] Figure 9 for Figure 2 An exploded three-dimensional structural diagram showing the distribution of the components of the first tea infusion distributor in the middle;

[0034] Figure 10 for Figure 9 A three-dimensional exploded structural diagram showing the cross-sectional distribution of the components.

[0035] Figure 11 for Figure 3 An exploded three-dimensional structural diagram showing the distribution of various components of a tea dispensing lifting device installed in a sealed tea storage container.

[0036] Figure 12 for Figure 11 A schematic diagram of the exploded three-dimensional structure of each component after cross-section.

[0037] Figure 13 for Figure 2 A three-dimensional structural diagram of the second tea infusion distributor.

[0038] Figure 14 for Figure 13 A three-dimensional diagram of the exploded structure of each component.

[0039] Figure 15 for Figure 14A schematic diagram of the exploded three-dimensional structure of each component after cross-section.

[0040] Figure 16 for Figure 3 A cross-sectional view of a sealed tea infusion storage container.

[0041] In the diagram: 1. Tea bowl; 2. Cold water pipe; 3. Cold water pump; 4. Instantaneous water heater; 5. Sealed tea infusion storage container; 5-1. Tea infusion outlet; 6. Hot water pump; 7. First tea infusion distributor; 8. Lifting rod; 9. Rotating gear; 9-1. Internal gear; 9-2. Turbine; 10. Worm gear; 11. Forward and reverse motor; 12. Sealed lower cover; 13. Circular track; 14. Sealed upper cover; 15. Circular groove; 16. External gear; 17. Vent seal plug; 18. Tea infusion seal plug; 19. Second tea infusion distributor; 20. One inlet and two outlet drain valve; 20-1. Total tea infusion outlet; 20-2. Drain pipe; 21. Tea spout; 22. Lower cover; 23. Upper cover; 24. Tea infusion outlet pipe; 25. Tea infusion inlet pipe; 26. Sealing ring; 27. Driven gear; 27-1. External gear; 27-2. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present application.

[0043] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0044] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0045] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0046] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts whose specific types and constructions may be the same or different, and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more. Fasteners can be bolts, screws, nuts, pins, etc.

[0047] Example 1 (The first tea infusion distributor and the second tea infusion distributor adopt conventional structures)

[0048] As shown in the attached diagram, the continuous extraction and storage tea brewing machine provided in this embodiment of the invention includes: a tea bowl 1, a cold water pipe 2, a cold water pump 3, an instantaneous water heater 4, and a sealed tea infusion storage container 5 (preferably a well-insulated sealed tea infusion storage container). The tea bowl is used for brewing tea. There are two or more sealed tea infusion storage containers; in this invention, there are seven. Its structural feature is that cold water is connected to the cold water inlet of the cold water pump 3 via the cold water pipe 2. The cold water outlet of the cold water pump is connected to the cold water outlet of the instantaneous water heater 4. The hot water outlet of the instantaneous water heater is connected to the hot water inlet of the tea bowl 1. The instantaneous water heater is powered on and heats the water. The boiling water from the hot water inlet brews the tea in the tea bowl for a certain period of time. The brewed tea water from the tea bowl passes through a filter and exits the brewing process. The water outlet is connected to the inlet of the hot water pump 6, and the outlet of the hot water pump is connected to the inlet of the first tea infusion distributor 7. The first tea infusion distributor generally adopts a conventional one-in-multiple-outlet design. The specific number of tea infusions distributed by the first tea infusion distributor matches the number of tea infusions distributed by the sealed tea infusion storage unit 5. For example, if the sealed tea infusion storage unit of this invention has 7 units, then the first tea infusion distributor adopts a one-in-7-outlet design. The tea infusions from each outlet of the first tea infusion distributor, for example, the tea infusion from the first outlet goes through the first tea infusion pipe and the first tea infusion spout to the first sealed tea infusion storage unit; the tea infusion from the second outlet goes through the second tea infusion pipe and the second tea infusion spout to the second sealed tea infusion storage unit; and the tea infusion from the third outlet goes through the third tea infusion pipe and the third tea infusion spout... From the water spout to the third sealed tea infusion reservoir, and so on, this embodiment of the invention has seven sealed tea infusion reservoirs. Finally, the tea from the seventh tea outlet flows through the seventh tea pipe and the seventh tea spout to the seventh sealed tea infusion reservoir, completing the entire process of brewing, dispensing, and storing the tea. Since this embodiment of the invention has seven sealed tea infusion reservoirs, the tea infusion from the tea bowl can be divided into seven portions, each stored in its own sealed tea infusion reservoir for heat preservation, or the tea infusion from seven brews can be stored separately in its corresponding sealed tea infusion reservoir (this requires the special second tea infusion distributor of this invention, see Embodiment 2), thus completing the distribution of each brew of tea in the tea bowl. The tea is then stored in an independent, sealed tea infusion container and kept warm. If the invention has eight sealed tea infusion containers, the tea in the teacup can be distributed to each of the eight containers, thus distributing the tea from the teacup to the eight sealed tea infusion containers. The brewed tea in the teacup enters the first sealed tea infusion container through the first tea outlet of the first tea infusion distributor, then enters the second sealed tea infusion container through the second tea outlet of the first tea infusion distributor, and so on. The brewed tea in the teacup enters the eighth sealed tea infusion container through the eighth tea outlet of the first tea infusion distributor and is kept warm. Since the inner cavity of the sealed tea infusion container is inverted conical, the tea enters through the tea outlet of the first tea infusion distributor 7 in a spiral shape.Each sealed tea infusion storage container is equipped with a tea infusion lifting device, which includes a lifting rod 8, a rotating gear 9, a worm gear 10, and a forward / reverse motor 11. The forward / reverse motor can be controlled to rotate forward and backward via a micro switch. Each sealed tea infusion storage container 5 has a tea infusion opening at the bottom. The upper opening of each sealed tea infusion storage container 5 is sealed by a sealing lower cover 12. The bottom of the sealing lower cover has a conical opening as the upper opening. A circular track 13 is provided on the sealing lower cover. The inner cavity of the circular track is connected to the upper opening of the bottom of the sealing lower cover, and the upper opening is used for ventilation. Outside the circular track 13, there is a cavity for placing the worm gear 10 and the forward / reverse motor on the sealing lower cover. The sealing upper cover 14 has a moving pipe in which the upper part of the lifting rod can move up and down. The rotating gear 9 includes an inner gear 9-1 in the inner cavity and a worm gear 9-2 on the outside, and a connecting rod between the inner gear and the worm gear. The circular groove 15 of the circular track of the placement cavity is configured. The worm gear and the forward and reverse motor are placed in the placement cavity. The circular groove of the rotating gear is placed in the circular track 13 of the sealing lower cover and can rotate on the circular track. The sealing upper cover is fixed on the sealing lower cover. The pipe opening of the movable pipe on the sealing upper cover is connected to the inner cavity of the circular track of the sealing lower cover. The worm gear 9-2 of the rotating gear meshes with the worm gear 10. The worm gear 10 meshes with the motor shaft of the forward and reverse motor 11. The forward and reverse motor is connected to an external power supply through a micro switch. The rotation of the forward and reverse motor drives the worm gear to rotate, so that the worm gear rotates. Each tea soup lifting device has an external gear 16, a venting sealing plug 17 and a tea soup sealing plug 18 arranged in sequence from top to bottom. The venting sealing plug is provided at the upper part of the lifting rod and the tea soup sealing plug is provided at the lower end of the lifting rod. The venting sealing plug and the tea soup sealing plug are spaced a certain distance apart. The external gear is located on the lifting rod above the vent seal plug and can mesh with the internal gear of the rotating gear placed on the annular track of the sealing cover. The external gear is a worm-shaped external gear. The forward and reverse motor rotates to drive the worm to rotate, which in turn drives the worm wheel of the rotating gear to rotate. The rotation of the internal gear of the rotating gear drives the worm-shaped external gear of the lifting rod to rotate, thus causing the lifting rod to perform the lifting and lowering action.The venting seal and the tea infusion seal of the lifting rod are spaced a certain distance apart. Within this distance, when the lifting rod moves downward, the tea infusion seal blocks the tea infusion outlet at the bottom of the sealed tea infusion container. At this time, the venting seal opens the top opening of the sealed tea infusion container, allowing air to pass through the gap between the top opening, the annular track of the sealed lower cover, and the lifting rod, as well as the gap between the lifting rod and the moving pipe on the sealed upper cover. Within this distance, when the lifting rod moves upward, the tea infusion seal opens the tea infusion outlet at the bottom of the sealed tea infusion container, allowing the tea infusion in the sealed tea infusion container to flow out from the tea infusion outlet. At this time, the venting seal blocks the tea infusion outlet. The upper part of the sealed tea infusion storage container has an opening that prevents air from passing through. At this time, the electric hot water pump works to aerate the sealed tea infusion storage container (at this time, there is no tea infusion in the tea bowl, so no tea comes out). The tea infusion outlet of each sealed tea infusion storage container 5 is connected to the corresponding inlet of the second tea infusion distributor 19 through the tea infusion outlet pipe. The second tea infusion distributor can be a conventional multi-inlet and one-outlet type. For example, if there are 7 sealed tea infusion storage containers in this invention, the second tea infusion distributor adopts a 7-inlet and one-outlet design. The tea infusion coming out of the total tea infusion outlet of the second tea infusion distributor passes through the total tea infusion outlet pipe and the total tea infusion outlet of the one-inlet and two-outlet drain valve 20 to the fairness cup. The one-in-two-out drain valve uses two commercially available two-position two-way solenoid valves connected in parallel. All the inlets of the two two-position two-way solenoid valves are connected in parallel and combined into one inlet, which is connected to the main outlet pipe of the tea soup. The two outlets of the two two-position two-way solenoid valves are the main outlet of the tea soup 20-1 and the cleaning outlet, respectively. The cleaning outlet is connected to the drain pipe 20-2.

[0049] Specifically, as shown in the attached diagram, this embodiment of the invention provides a continuous extraction and storage tea brewing machine. Its core function is to achieve the brewing, dispensing, and batch heat preservation and storage of tea infusion. The overall structure includes: a tea bowl, a cold water pipe, a cold water pump, an instant water heater, and a sealed tea infusion storage container. All components work together to complete the entire process of "water intake - heating - brewing - dispensing - storage - dispensing or rinsing." The specific structure and working principle are as follows:

[0050] I. Core Components and Connection Relationships

[0051] 1.1 Tea bowl

[0052] The tea bowl 1 is the core component for brewing tea, used to hold tea leaves and brew the tea. Its innovative integrated design balances aesthetics and practicality: the tea bowl body features a streamlined, tapered, one-piece molding structure that is wider at the top and narrower at the bottom. Its rounded and simple shape, along with its symmetrical aesthetic layout, facilitates integration with the overall machine appearance and enhances the product's visual integrity. Inside the tea bowl, an integrated vertical baffle filter symmetrically divides the inner cavity into a tea-holding chamber on the left and a clear liquid chamber on the right, forming an innovative dual-cavity structure with left-right partitioning, solid-liquid separation, and independent flow guidance. This effectively prevents tea leaves and tea residue from entering the pump and causing blockages, while also achieving a stable, turbulent, and residue-free brewing effect.

[0053] The teacup has a hot water inlet at the bottom or top, which leads directly to the tea-holding cavity. When the hot water inlet is located at the top of the teacup, boiling water can flow evenly down the cavity wall, ensuring a more thorough and even brewing of the tea. A concealed micro-venting and overflow channel is located on the side of the top of the teacup. This ensures smooth venting and prevents air blockage during brewing and water pouring, while also allowing overflow in case of overfilling, preventing liquid spillage. The small, concealed opening does not compromise the overall aesthetic appeal of the teacup, combining functionality and beauty.

[0054] The bottom of the teacup features a smooth, rounded flow-guiding structure, eliminating any unsanitary corners and facilitating easy cleaning and complete drainage of residual water. A tea-brewing water outlet is located at the bottom, while a drain vent is positioned low on the side. The tea-brewing water outlet connects to the clear liquid chamber and is also connected to the hot water pump inlet. The piping layout is simple and neat, ensuring smooth tea flow. The drain vent is normally closed, only opening during cleaning or maintenance to ensure no residual water remains in the teacup and prevent bacterial growth. The side wall of the teacup, corresponding to the clear liquid chamber, employs an embedded, concealed temperature sensor or thermometer mounting structure. The temperature probe is internal and does not protrude from the outer wall, preserving the teacup's streamlined shape. This allows for real-time and accurate monitoring of the brewing water temperature, ensuring consistent brewing results, while also enhancing the overall structural integration and innovation.

[0055] 1.2 Water Inlet and Heating System

[0056] The water inlet and heating system provides a measured and constant-temperature brewing water supply to the teacup. Its connections are as follows: cold water is introduced into the cold water inlet of the cold water pump 3 via cold water pipe 2; the cold water outlet of the cold water pump is connected to the cold water inlet of the instantaneous water heater 4; and the hot water outlet of the instantaneous water heater is connected to the hot water inlet of the teacup. The instantaneous water heater can quickly heat cold water to boiling point upon power-on. The water temperature can be monitored through a temperature monitoring unit (thermostat or thermometer window) on the teacup to ensure the brewing temperature meets the requirements of different teas.

[0057] 1.3 Sealed Tea Storage Container

[0058] The sealed tea infusion storage container 5 is used for independent heat preservation and storage of the diverted tea infusion. Two or more containers are typically used, preferably seven in this embodiment, but the number can be adjusted according to actual storage needs (e.g., eight). The inner cavity of the sealed tea infusion storage container is inverted conical in shape. Combined with the spiral tea infusion feeding method of the first tea infusion distributor 7, this reduces splashing during tea infusion injection and facilitates subsequent cleaning, preventing tea residue. Each sealed tea infusion storage container 5 has a tea infusion outlet 5-1 at the bottom, serving as the sole channel for tea infusion discharge. The top opening (upper opening) is sealed with a bottom cover, achieving overall airtightness of the sealed tea infusion storage container, preventing oxidation and deterioration of the tea infusion, and preventing dust and impurities from entering, thus ensuring the taste and hygiene of the tea infusion.

[0059] Each sealed tea infusion storage container is equipped with a tea infusion lifting device, which controls the opening and closing of the tea infusion opening 5-1 to achieve sealed storage of tea infusion and on-demand dispensing. At the same time, it controls the ventilation status of the sealed tea infusion storage container to ensure a stable and reliable storage and dispensing process.

[0060] II. Brewing and Dispensing Storage Process

[0061] The tea maker in this embodiment achieves automated brewing, dispensing, and heat preservation of tea through the coordinated operation of its various components. The specific process is as follows:

[0062] 1. Water Inlet Heating: After turning on the power to the cold water pump, the cold water pump starts working and pumps cold water into the instant water heater through the cold water pipe. The instant water heater is powered on and heats the cold water quickly to boiling water. After the water temperature reaches the preset brewing temperature (boiling water), the hot water outlet valve of the instant water heater is opened (this valve can be set) to send a measured amount of boiling water into the tea bowl's tea-holding chamber through the hot water inlet. Then the hot water outlet valve is closed to complete the water filling process.

[0063] 2. Timed brewing: Boiling water is poured into the tea-holding chamber to steep the tea leaves for a set time. The steeping time can be precisely controlled by adjusting the start time of the hot water pump. For example, if the steeping time is set to 3 minutes, after pouring boiling water into the tea bowl and letting it sit for 3 minutes to ensure that the tea leaves have fully steeped, the hot water pump will be started to extract the steeped tea.

[0064] 3. Tea Infusion Diversion: After brewing, the tea infusion is filtered through an integrated vertical baffle filter inside the tea bowl. Tea dregs are trapped in the tea-holding chamber, and the filtered pure tea infusion enters the clear liquid chamber. It then flows out from the tea-brewing water outlet at the bottom of the tea bowl and connects to the inlet of the hot water pump 6. The hot water pump pressurizes the tea infusion and pumps it into the inlet of the first tea infusion diverter 7. The first tea infusion diverter 7 adopts a conventional one-inlet-multiple-outlet structure, and the number of its outlet branches perfectly matches the number of sealed tea infusion storage containers. In this embodiment, it corresponds to 7 sealed tea infusion storage containers. The first tea infusion diverter adopts a one-inlet-seven-outlet structure (the principle can be referred to the one-inlet-multiple-outlet pipe-type water diverter described in CN201610866970.9).

[0065] 4. Storage complete: Each tea outlet of the first tea diverter is connected to the corresponding sealed tea storage container 5 through the corresponding tea outlet pipe and tea outlet nozzle 21. Specifically, the first tea outlet is connected to the first sealed tea storage container through the first tea outlet pipe and the first tea outlet nozzle, the second tea outlet is connected to the second sealed tea storage container through the second tea outlet pipe and the second tea outlet nozzle, and so on, with the seventh tea outlet connected to the seventh sealed tea storage container through the seventh tea outlet pipe and the seventh tea outlet nozzle, thus completing the entire process of brewing tea, dispensing tea, and diverting tea soup to each sealed tea storage container.

[0066] Additional explanation: The above-mentioned seven sealed tea infusion storage containers have two storage modes. They can be used to store seven equal portions of tea infusion after a single brewing in a teacup and keep them warm independently, or they can store seven independently brewed portions of tea infusion separately (this mode requires the special second tea infusion diverter of this invention, see Embodiment 2 for details). This allows each brew of tea in the teacup to be diverted to an independent sealed tea infusion storage container and kept warm, meeting the needs of storing multiple portions of tea infusion. If eight sealed tea infusion storage containers are set up, the first tea infusion diverter can be replaced with a one-in-eight-out structure, allowing the tea infusion in the teacup to be diverted to eight sealed tea infusion storage containers for separate warming and storage, adapting to different batch storage needs. At the same time, since the inner cavity of the sealed tea infusion storage container is inverted conical, and the tea outlet of the first tea infusion diverter adopts a spiral tea inlet method, the stability of tea infusion storage can be further improved, reducing tea splashing and residue.

[0067] III. Structure and Working Principle of the Tea Dispensing Lifting Device

[0068] The tea dispensing lifting device is adapted to be installed inside each sealed tea storage container. Working together with the sealed tea storage container, it achieves sealed storage of tea, automatic dispensing, and ventilation regulation. It aims to solve the technical problems of poor sealing performance of tea storage, inconvenient control of dispensing and ventilation, inaccurate lifting action, and the need for manual control of reversal in the existing tea brewing machine process. It realizes integrated automatic control of dispensing, sealing, and ventilation. Its structure is compact, reliable, and has a low failure rate. It does not require programming control. The motor forward and reverse rotation and lifting action switching are achieved purely by hardware, which is convenient for mass production and assembly.

[0069] 3.1 Overall Structural Composition

[0070] The tea dispensing lifting device mainly includes: a lifting rod, a rotating gear, a worm gear, and a forward and reverse motor. The forward and reverse motor can be controlled by a microswitch to precisely adjust the lifting state of the lifting rod. It is also equipped with a sealing upper cover and a sealing lower cover, ensuring precise compatibility with airtight tea storage containers. Specific structural details are as follows:

[0071] 1. Matching Sealing Structure: The sealing lower cover seals the top opening of the airtight tea infusion container. Its bottom has a conical opening serving as the upper opening, which acts as a ventilation channel for switching between internal and external ventilation. The sealing lower cover features a circular track, the inner cavity of which connects to the upper opening at the bottom of the sealing lower cover, ensuring unobstructed ventilation. Ventilation at the upper opening is controlled by a venting sealing plug on a lifting device. A dedicated placement cavity is located outside the circular track on the sealing lower cover. This cavity houses the worm gear and the forward / reverse motor. The cavity's dimensions precisely match the shape of the worm gear and motor, ensuring stable installation and isolating the motor, worm gear, ventilation channel, and lifting structure. This prevents moisture corrosion of the motor and transmission components, extending their service life. The sealing top cover is fixedly installed on the sealing bottom cover (using snaps, bolts, or adhesive) to form a complete sealing structure. The sealing top cover has a movable pipe for the upper part of the lifting rod to pass through and move up and down. The inner wall of the movable pipe is smoothed to reduce the frictional resistance when the lifting rod moves, while ensuring a reasonable gap between the pipe and the lifting rod, taking into account both ventilation requirements and sealing performance. The pipe opening of the movable pipe is connected to the inner cavity of the circular track of the sealing bottom cover.

[0072] 2. Transmission Structure: The rotating gear is a combined integrated structure, combining worm gear transmission, internal gear transmission, and track adaptation functions. Specifically, it includes an integrally molded internal gear, worm gear, and an annular groove: The internal gear is located inside the rotating gear's cavity and meshes with the external gear of the lifting rod to transmit rotational power to drive the lifting rod's ascent and descent; the worm gear is located on the outside of the rotating gear and meshes with the worm to receive power transmitted from the forward and reverse motors; the annular groove is located between the internal gear and the worm gear, and this annular groove precisely matches the annular track of the sealed lower cover, with a perfect dimensional fit. The rotating gear is embedded in the annular track of the sealed lower cover through the annular groove and can rotate flexibly within the annular track. The annular track positions and guides the rotating gear, ensuring that the rotating gear rotates without deviation or jamming, thus guaranteeing the accuracy of the lifting rod's ascent and descent. The rotating gear is made of high-strength engineering plastic (such as POM), which is wear-resistant and corrosion-resistant, suitable for the humid working environment of the tea maker. The worm gear and the forward and reverse motor are installed in the placement cavity of the sealed lower cover. The worm gear meshes with the motor shaft of the forward and reverse motor, and at the same time, the worm gear meshes with the worm wheel of the rotating gear to form a complete transmission chain, realizing the precise transmission of power.

[0073] 3. Lifting Rod and Sealing Components: The lifting rod is the core actuator for switching between dispensing, sealing, and ventilation. Its structural design is precisely matched with the rotating gear, the sealing structure of the sealed storage container, and the dispensing opening. From top to bottom, it consists of an external gear, a ventilation sealing plug, and a tea liquid sealing plug. Each component is integrally formed or fixedly connected to ensure synchronous lifting and reliable sealing. The external gear is located at the top of the lifting rod and above the ventilation sealing plug. The external gear is a worm gear that precisely meshes with the internal gear of the rotating gear. When the rotating gear rotates, the internal gear in its cavity drives the worm gear to rotate. Because the lifting rod is limited by the moving pipe of the sealed cover, the rotational motion of the rotating gear is converted into the vertical lifting motion of the lifting rod, achieving precise control of the lifting action. The venting and sealing plug is located at the top of the lifting rod, below the external gear. Its size precisely matches the upper opening (conical opening) of the bottom of the sealing cover, enabling switching between venting and sealing at the upper opening. The tea infusion sealing plug is located at the bottom of the lifting rod, its size precisely matching the tea infusion opening at the bottom of the sealed tea infusion container, enabling opening and closing of the tea infusion opening. A preset distance is maintained between the venting and tea infusion sealing plugs, which is the effective lifting stroke of the lifting rod, ensuring that their actions do not interfere with each other and achieving coordinated control of venting and tea infusion dispensing. Both the venting and tea infusion sealing plugs are made of food-grade silicone, possessing excellent elasticity and sealing performance. This ensures no leakage of tea or air during sealing and prevents wear on the container and sealing structure during lifting. The lifting rod is made of high-strength stainless steel with a smooth surface treatment to reduce friction with the moving pipe and ensure smooth lifting.

[0074] 4. Limit Trigger Component (Micro Switch): The limit trigger component uses two normally closed micro switches to detect the lifting limit position of the lifting rod, triggering the forward and reverse motors to switch directions, realizing the automatic cycle of lifting action, and thus controlling the switching between dispensing, sealing and venting. The micro switches are waterproof normally closed (NC) structures with a rated voltage of 12V, a rated current of 1A, a trigger stroke of ≤0.5mm, sensitive triggering, and a certain degree of waterproof performance, making them suitable for the humid working environment of the tea maker and preventing switch failure due to moisture. Two microswitches are installed on the upper and lower positions of the moving pipe inside the sealed top cover, corresponding to the lowest and highest lifting positions of the lifting rod, respectively: one microswitch (lower limit switch S1) corresponds to the lifting rod moving down to the limit position (the tea soup sealing plug closes the soup outlet), and the other microswitch (upper limit switch S2) corresponds to the lifting rod moving up to the limit position (the tea soup sealing plug opens the soup outlet); the trigger end of the microswitch is adapted to the corresponding position of the lifting rod or rotating gear. When the lifting rod reaches the limit position, it triggers the microswitch to switch on and off, thereby controlling the reversing motor to change direction.

[0075] 5. Drive Control Component: The drive control component is a technology that can be implemented by general technicians. It is used to receive trigger signals from microswitches and control the forward and reverse rotation, start and stop of the reversible motor to realize the automatic cycle of the lifting rod's lifting action. Its core uses commercially available L298N motor driver boards, such as those independently developed and produced by Shenzhen Xinyi Technology Co., Ltd., which are fully compatible with L298N driver chips and driver board modules. The products are compatible with the forward and reverse rotation control of DC motors and geared motors, and have good compatibility and stability. Combined with a 12V regulated power supply, it forms a complete control circuit with the reversible motor and microswitches. This component does not require a microcontroller or programming; the control is achieved through pure hardware circuitry. It has a simple structure, high reliability, and reduces production and maintenance costs. At the same time, it adapts to the limit trigger requirements of microswitches to ensure rapid motor commutation response.

[0076] 3.2 Selection and Working Principle of Forward and Reverse Gear Motors

[0077] In this embodiment, a miniature DC reversible geared motor is selected to meet the miniaturization requirements of the equipment. It is an integrated power unit that integrates a bidirectional rotating drive motor and a gearbox (gearbox / worm gearbox). The motor is responsible for outputting the basic speed and direction of rotation, and the gearbox achieves speed reduction and torque increase through gear meshing, while accurately transmitting forward and reverse motion. Its common structure includes: drive motor body (DC brushed / brushless), reduction mechanism (planetary gear / worm gear, providing a stable reduction ratio), output shaft (connected to driven gear / actuator), control interface (receiving forward / reverse, start / stop, PWM speed regulation signals, and using micro switches / controllers to achieve limit switching), and sealed shell (moisture-proof and steam-proof, suitable for the humid and hot environment of tea brewing machines).

[0078] Its specific working principle is as follows (the technology can be implemented by general technicians):

[0079] 1. Reverse rotation is achieved: The DC motor changes the direction of the armature current through the H-bridge drive circuit, which reverses the rotating magnetic field of the stator, and the rotor rotates in the opposite direction, thereby realizing the forward and reverse rotation of the motor.

[0080] 2. Speed ​​reduction and torque increase: The high-speed output shaft of the motor drives the drive wheel in the gearbox. After multi-stage gear reduction, the output shaft speed is reduced and the torque is proportionally amplified (the larger the reduction ratio, the greater the torque and the lower the speed), ensuring that the lifting rod is raised and lowered smoothly and with sufficient power.

[0081] 3. Limit control: It works with microswitches to achieve limit protection. When the lifting rod moves to the upper or lower limit position, it triggers the microswitch to cut off the power supply in the corresponding direction, preventing overtravel damage to the equipment and improving the safety of equipment operation.

[0082] 4. The specific parameters of this forward and reverse geared motor are as follows: rated voltage 12V, rated current ≤1.5A, output speed after gear ratio adjustment is 10-30rpm, output torque ≥5N•m, the motor housing is equipped with heat dissipation fins to meet the needs of long-term operation and extend service life.

[0083] 3.3 Working process of the lifting device

[0084] The forward and reverse motor is powered by an external power source via a microswitch. After starting, it drives the worm gear to rotate, which in turn drives the worm wheel and the internal gear of the rotating gear to rotate synchronously. The internal gear of the rotating gear meshes with the worm-shaped external gear of the lifting rod, driving the lifting rod to move up and down. Specifically, it has two working states to achieve coordinated control of ventilation, sealing, and soup dispensing.

[0085] 1. Sealed Storage State: When the lifting rod moves down, the tea soup sealing plug precisely seals the tea soup outlet at the bottom of the sealed tea soup storage container, achieving a sealed container and ensuring the tea soup is kept warm. At the same time, the venting sealing plug opens the upper opening of the sealed lower cover. The sealed tea soup storage container is connected to the outside atmosphere through the gap between the upper opening, the circular track of the sealed lower cover and the lifting rod, and the gap between the lifting rod and the moving pipe on the sealed upper cover. This ensures the stability of the tea soup entering the sealed tea soup storage container and prevents the tea soup from being unable to be injected smoothly due to excessive internal air pressure.

[0086] 2. Tea Dispensing State: When the lifting rod moves upward, the tea dispensing plug disengages from the tea dispensing opening, opening the dispensing channel. Tea in the sealed tea storage container can then flow out from the tea dispensing opening. Simultaneously, the venting plug precisely seals the upper opening of the sealing lower cover, sealing the upper opening and isolating the interior of the sealed tea storage container from the outside, forming a sealed cavity. At this time, the hot water pump is powered on and pressurizes the sealed tea storage container (at this time, there is no tea dispensing from the teacup), using air pressure to force the tea out, achieving a stable dispensing process and ensuring smooth tea dispensing without residue.

[0087] Additional notes: This invention can also be configured with a simplified structure. In this case, there is no need for a microswitch or a reversible motor to control forward and reverse rotation. Instead, it is manually controlled: manually rotating the lifting rod or worm gear upwards raises the rod, causing the vent sealing plug and tea soup sealing plug to move upwards, blocking the upper opening of the sealed lower cover and opening the tea soup outlet at the bottom of the sealed tea soup storage container for manual dispensing; manually rotating the lifting rod or worm gear downwards lowers the rod, causing the vent sealing plug and tea soup sealing plug to move downwards, opening the upper opening of the sealed lower cover and blocking the tea soup outlet at the bottom of the sealed tea soup storage container for manual sealing and storage, adapting to different usage scenarios.

[0088] IV. Circuit Structure Description

[0089] The circuit structure of this tea dispensing lifting device is based on the L298N motor drive board and powered by a 12V DC regulated power supply. It mainly includes a power supply circuit, a motor drive circuit, and a limit trigger circuit, each circuit operating independently yet collaboratively. The circuit adapts to the power requirements of both forward and reverse motors. By changing the on / off state of two normally closed microswitches, the level signal at the control terminal of the L298N drive board is altered, thereby controlling the motor's forward and reverse rotation, driving the lifting rod to complete the lifting action, and achieving automatic switching between dispensing, sealing, and venting. The core design highlights of the circuit are: no additional control chip is required; pure hardware wiring achieves automatic motor reversal, simplifying the circuit structure and reducing the failure rate; it also adapts to the dispensing requirements of sealed tea storage containers, ensuring rapid motor reversal response, precise lifting rod movement, and coordinated action between the venting and sealing plugs and the tea dispensing plug.

[0090] 4.1 Core Component Parameters

[0091] 1. L298N motor driver board: operating voltage range 12-24V, supports dual motor drive, single-channel maximum output current 2A, with overcurrent protection and reverse connection protection functions, onboard enable terminals (ENA terminal, ENB terminal), adapted to the drive requirements of 12V DC forward and reverse geared motors.

[0092] 2. 12V regulated power supply: Output voltage 12V, rated current ≥2A, with voltage regulation and filtering functions, providing stable power supply to the drive board and forward and reverse motors, avoiding abnormal motor operation caused by voltage fluctuations, and ensuring smooth lifting of the lifting rod;

[0093] 3. 12V DC forward and reverse geared motor: As described in 3.2, the rated voltage is 12V, the output speed is 10-30rpm, the output torque is ≥5N•m, and it has forward and reverse rotation functions to meet the requirements of worm gear transmission.

[0094] 4. Normally closed micro switch: rated voltage 12V, rated current 1A, trigger stroke ≤0.5mm, waterproof normally closed structure, used to detect the limit position of the lifting rod and trigger the motor to reverse.

[0095] 4.2 Specific wiring method (precisely matched, ready for direct assembly)

[0096] 1. Power supply circuit wiring: Connect the positive output terminal of the 12V regulated power supply directly to the "12V" pin of the L298N motor driver board; connect the negative output terminal of the 12V regulated power supply directly to the "GND" pin of the L298N motor driver board to form the power supply circuit for the driver board; at the same time, ensure that the positive and negative terminals of the power supply are connected correctly to avoid burning out the driver board due to reverse connection; the power supply for the forward and reverse motors is provided by the output terminal of the L298N driver board to achieve synchronous power supply.

[0097] 2. Motor drive circuit wiring: Connect the two leads of the 12V DC forward and reverse geared motor to the “OUT1” and “OUT2” pins of the L298N motor drive board respectively (the wiring can be interchanged, and the forward and reverse directions of the motor will be switched synchronously after the interchange, which can be adjusted according to the lifting direction requirements of the lifting rod); the “ENA” pin (motor A-circuit enable terminal) of the L298N drive board is directly shorted to the “5V” pin of the drive board, so that the motor A-circuit is always in the enabled state, ensuring that the motor can receive control signals and run normally without the need for additional enable control components, which is suitable for automatic cycle requirements.

[0098] 3. Limit trigger circuit wiring: One end of the lower limit switch S1 (corresponding to the lower limit position of the lifting rod) is connected to the "GND" pin of the L298N driver board, and the other end is connected to the "IN1" pin of the L298N driver board (motor A-path forward rotation control terminal); one end of the upper limit switch S2 (corresponding to the upper limit position of the lifting rod) is connected to the "GND" pin of the L298N driver board, and the other end is connected to the "IN2" pin of the L298N driver board (motor A-path reverse rotation control terminal); both microswitches are kept in the initial normally closed state, forming a limit trigger circuit. Their on / off state directly controls the level signal of the IN1 and IN2 pins, thereby triggering the motor commutation.

[0099] 4.3 Circuit working principle (in coordination with mechanical structure)

[0100] After the circuit is powered on, the 12V regulated power supply provides stable power to the L298N driver board and the forward and reverse motor. Since the ENA pin is shorted to enable 5V, the motor A circuit is in working state. In the initial state, both normally closed micro switches S1 and S2 are closed. The lower limit switch S1 is closed, so the IN1 pin is connected to GND (low level). The upper limit switch S2 is closed, so the IN2 pin is connected to GND (low level). At this time, the L298N driver board controls the forward and reverse motor to rotate forward. The motor drives the worm gear to rotate. The worm gear drives the worm wheel of the rotating gear to rotate. The internal gear of the rotating gear meshes with the worm-shaped external gear of the lifting rod, causing the lifting rod to move vertically downward.

[0101] When the lifting rod moves down to its limit position, the tea liquid sealing plug precisely blocks the tea liquid outlet at the bottom of the sealed tea liquid storage container, achieving a seal. At this time, the lifting rod or rotating gear triggers the lower limit switch, causing the lower limit switch to change from a normally closed state to an open state. The IN1 pin loses its GND connection and becomes high. The IN2 pin remains low due to the upper limit switch being closed. After receiving the change in the level signal, the L298N driver board controls the forward and reverse motors to reverse. The motor drives the worm gear to rotate in the opposite direction, which in turn drives the rotating gear to rotate in the opposite direction, and the lifting rod begins to move vertically upward.

[0102] When the lifting rod moves to its limit position, the tea soup sealing plug disengages from the tea soup outlet, opening the tea soup outlet channel, allowing the tea soup in the sealed tea soup storage container to be discharged from the outlet. At the same time, the vent sealing plug precisely blocks the upper opening at the bottom of the sealed lower cover, keeping the storage container in a sealed dispensing state to prevent tea soup from overflowing. At this time, the lifting rod or rotating gear triggers the upper limit switch, causing the upper limit switch to change from a normally closed state to an open state. The IN2 pin loses its GND connection and becomes high. The IN1 pin returns to its normally closed state due to the lower limit switch losing its pressure and remains low. The L298N driver board then controls the forward and reverse motors to rotate forward again, and the lifting rod moves down again, entering the next cycle.

[0103] During this process, the ventilation and tea liquid sealing plugs of the lifting rod always work in tandem: when the lifting rod moves down, the tea liquid sealing plug closes and the upper opening opens, achieving ventilation and sealing of the storage container; when the lifting rod moves up, the tea liquid sealing plug opens and the upper opening closes, achieving sealed tea dispensing; through the alternating on and off of two normally closed microswitches, the motor is triggered to automatically reverse, driving the lifting rod to complete the automatic cycle of "moving down to seal and ventilate → moving up to dispense and seal". The entire process requires no manual intervention or programming control, operates stably, responds quickly, and has reliable sealing, perfectly adapting to the dispensing needs of sealed tea liquid storage containers.

[0104] V. Soup Dispensing and Cleaning Functions

[0105] 5.1 Summary of Broth Preparation

[0106] Each sealed tea infusion container's outlet is connected to the corresponding inlet of the second tea infusion distributor via an outlet pipe. The second tea infusion distributor adopts a conventional multi-inlet, one-outlet structure, similar to the first tea infusion distributor (e.g., a one-inlet, multi-outlet structure) but used in reverse. In this embodiment, corresponding to seven sealed tea infusion containers, the second tea infusion distributor adopts a seven-inlet, one-outlet structure. The total outlet of the second tea infusion distributor is connected to the fairness cup via a total outlet pipe and a one-inlet, two-outlet drain valve, completing the aggregated output of tea infusion from multiple sealed tea infusion containers for easy user access.

[0107] 5.2 Structure of a single-inlet, dual-outlet drain valve

[0108] The one-in-two-outlet drain valve is used to switch between tea dispensing and cleaning functions. It consists of two commercially available two-position two-way solenoid valves connected in parallel, which is simple in structure, easy to purchase, and highly reliable. All inlets of the two two-position two-way solenoid valves are connected in parallel and converge into a single inlet, which is connected to the main tea outlet pipe. The two outlets of the two two-position two-way solenoid valves are the main tea outlet and the cleaning outlet, respectively. The main tea outlet is used to discharge tea during tea dispensing, and the cleaning outlet is used to discharge wastewater during equipment cleaning, thus achieving independent control of the tea dispensing and equipment cleaning functions.

[0109] 5.3 Cleaning Process

[0110] To ensure equipment hygiene and prevent the growth of bacteria from tea residue, this invention is equipped with an automatic cleaning function. The specific cleaning process is as follows:

[0111] 1. Cleaning preparation: Do not place tea leaves in the tea bowl. Keep both the tea soup outlet and the cleaning outlet of the one-in-two-out drain valve closed. Connect the cleaning outlet to the drain pipe. Then, control the forward and reverse motor to reverse, causing the lifting rod of each sealed tea soup storage container to move down, closing the bottom tea soup outlet, and opening the top opening to ensure ventilation between the inside of the storage container and the outside.

[0112] 2. Rinsing Process: Pour hot water (without tea) into the teacup, start the hot water pump, and the hot water flows through the tea-holding chamber, clear liquid chamber, and tea-brewing outlet of the teacup into the hot water pump inlet. After being pressurized by the hot water pump, it is sent to the inlet of the first tea infusion distributor. The hot water then flows through the various tea outlets, tea pipes, and tea spouts of the first tea infusion distributor, spiraling into each sealed tea infusion storage container (using the inverted conical inner cavity structure of the storage container, see...). Figure 16 ), thoroughly rinse the inside of the storage container to remove any remaining tea soup and tea stains.

[0113] 3. Wastewater discharge: After cleaning, control the lifting rod of each sealed tea infusion storage unit to move upward, open the tea infusion outlet at the bottom, and at the same time open the cleaning outlet of the one-in-two-out drainage valve. The wastewater generated during rinsing is discharged through the tea infusion outlet of each sealed tea infusion storage unit, the tea infusion pipe, the second tea infusion distributor, the main tea infusion outlet pipe, the cleaning outlet of the one-in-two-out drainage valve, and the drainage pipe, thus completing the comprehensive cleaning of the equipment.

[0114] VI. Key Innovations

[0115] The continuous extraction and storage tea brewing machine of this embodiment has the following key innovations in terms of structure, control, and function, which distinguish it from existing technologies:

[0116] 1. Innovative tea bowl structure: It adopts a streamlined conical integrated molding structure that is wider at the top and narrower at the bottom, with an integrated vertical partition filter screen inside, symmetrically divided into a tea-holding chamber and a clear liquid chamber, realizing solid-liquid separation and independent flow guidance, while also being both aesthetically pleasing and practical; the design of a concealed exhaust overflow channel and an embedded temperature measurement installation position further enhances the structural integration and aesthetics, and avoids functional components from damaging the appearance.

[0117] 2. Innovative control method: It adopts a pure hardware circuit design, based on the L298N driver board and normally closed micro switch. It can realize automatic reversing of forward and reverse motor and lifting rod lifting cycle without microcontroller or programming. At the same time, it can control the switching of soup outlet and vent. It has a simple structure, low cost, low failure rate and is easy to mass production and assembly.

[0118] 3. Innovative Transmission Structure: The transmission structure of the lifting rod and the rotating gear is innovatively designed. The rotating gear integrates an internal gear, a worm gear, and a circular groove, which is adapted to the circular track and worm gear transmission of the sealed lower cover. The lifting rod adopts a worm-shaped external gear to achieve precise conversion of rotational power into vertical lifting power. The lifting action is smooth, precise, and without deviation or jamming.

[0119] 4. Synergistic innovation of sealing and ventilation: The lifting rod integrates a ventilation sealing plug and a tea soup sealing plug, which maintain a reasonable distance to achieve coordinated switching between the soup outlet and the ventilation port. When the lifting rod moves down, it seals the soup outlet and opens the ventilation. When it moves up, it opens the soup outlet and seals the ventilation. It takes into account both the needs of sealed storage and automatic soup dispensing. The sealing performance is reliable and avoids tea soup leakage or oxidation.

[0120] 5. Integrated Innovation: The sealed tea infusion storage device and lifting device are integrated into one design. The sealed lower cover integrates a circular track, placement chamber and vent. It realizes the embedded installation of rotating gears, worm gears and motors, with a compact structure and high space utilization. At the same time, it isolates the power components from the ventilation and tea infusion channels, making it waterproof and moisture-proof, and extending the service life of the equipment.

[0121] 6. Adaptability and Innovation: The overall structure is suitable for the batch assembly of multiple sealed tea infusion storage containers. Each storage container corresponds to a lifting device, which is independently controlled and does not interfere with each other, adapting to the needs of tea brewing machines with multiple channels of tea infusion. It also supports both electric and manual control modes, and the number of sealed tea infusion storage containers can be adjusted according to storage needs. It is highly adaptable and can be assembled and used without large-scale equipment modification.

[0122] Example 2 (The second tea infusion distributor adopts the distributor with the special structure of the present invention)

[0123] As shown in the attached figure, the continuous extraction and storage tea brewing machine provided in this embodiment of the invention is based on embodiment 1, but the second tea soup distributor 19 is modified to a distributor with a special structure of the present invention, so that each brew of tea soup is distributed to an independent container and kept warm. For example, the tea soup can be brewed 7 times, and each time it is put into a specific sealed tea soup storage container. Similarly, if a certain type of tea is brewed 7 times, each of the 7 brews will flow to 7 corresponding sealed tea soup storage containers. Finally, the user can obtain the tea soup of any specific brewing as needed.

[0124] The second tea infusion distributor 19 includes a lower cover 22, an upper cover 23, a tea infusion outlet pipe 24, a tea infusion inlet pipe 25, and a mechanism for the tea infusion outlet pipe to move up and down. The upper cover is fixed to the lower cover. The lower cover 22 has several tea infusion inlet pipes 24. The upper cover has a central channel leading from the inside to the outside. The lower end of the tea infusion outlet pipe can pass through this central channel. The lower part of the tea infusion outlet pipe is dynamically sealed to the channel. A sealing ring 26 is provided at a corresponding location in the center of the lower cover. After passing through the central channel of the upper cover, the lower part of the tea infusion outlet pipe 25 presses against the sealing ring 26 fixed to the sealing ring 26, thus controlling the flow of tea infusion from the lower end of the outlet pipe. The tea infusion tube is sealed. The up-and-down movement mechanism includes a forward and reverse geared motor and a driven gear 27. The driven gear includes an external gear 27-1 and an internal gear 27-2. A worm is provided on the outer surface of the upper part of the tea infusion tube. The worm on the outer surface of the upper part of the tea infusion tube meshes with the internal gear 27-2 of the driven gear. The external gear 27-1 of the driven gear meshes with the motor shaft gear of the forward and reverse geared motor. When the forward and reverse geared motor is energized and rotates, it drives the external gear 27-1 of the driven gear to rotate. The internal gear 27-2 of the driven gear drives the worm at the upper part of the tea infusion tube to rotate, causing it to move upward and opening the lower end of the tea infusion tube. When the lifting rod of one of the sealed tea infusion containers moves upward, the tea infusion outlet at the bottom of any one of the tea infusion sealing plugs opens, while the tea infusion outlets at the bottom of the other sealed tea infusion containers close. The tea infusion flows out from the tea infusion outlet and enters the corresponding tea infusion pipe of the second tea infusion distributor. Since the lower end of the tea infusion pipe is open, the total tea infusion outlet of the tea infusion pipe is connected to the fairness cup through the total tea infusion outlet pipe and the tea infusion outlet of the one-in-two-out drain valve, thus realizing the tea infusion dispensing from one sealed tea infusion container. In this way, any sealed tea infusion container can be dispensed as required. For example, in this embodiment, there are seven sealed tea infusion containers. A second tea infusion distributor with a seven-in-one-out structure is used. To allow one infusion to enter a specific sealed tea infusion container, the second tea infusion distributor is closed, and the top opening of one of the sealed tea infusion containers is opened. The top openings of the other six sealed tea infusion containers are closed. Since the tea infusion outlets at the bottom of the six sealed tea infusion containers are connected to the closed second tea infusion distributor, the tea infusion from the six tea spouts cannot flow into the six corresponding sealed tea infusion containers. Only one sealed tea infusion container has its top opening open, allowing the tea infusion from its spout to flow into the corresponding sealed tea infusion container. At this point, the second tea infusion distributor is opened, allowing the tea infusion from the tea infusion pipe to flow from the main tea infusion outlet through the main tea infusion outlet pipe and the tea infusion outlet of the one-in-two-out drain valve into the fairness cup, thus achieving tea infusion dispensing from one sealed tea infusion container. This allows any sealed tea infusion container to dispense tea as required.

[0125] Specifically, the continuous extraction and storage tea brewing machine provided in Embodiment 2 of the present invention is based on Embodiment 1 in its overall structure. The difference between Embodiment 1 and Embodiment 2 is that the second tea diverter with a conventional multi-inlet and one-outlet structure in Embodiment 1 is replaced with a second tea diverter with a special structure of the present invention. The multi-inlet and one-outlet structure of the second tea diverter with the special structure and the micro switch realize the precise diversion of each brew of tea to an independent sealed tea storage container and keep it warm. Specifically, the tea soup from 7 brews can flow into 7 corresponding sealed tea storage containers and keep them warm. Finally, the user can obtain the tea soup of any specific brew as needed to meet the drinking needs of different brews.

[0126] In this embodiment 2, except for the second tea diverter, all other components (tea bowl, cold water pipe, cold water pump, instant water heater, sealed tea storage container, first tea diverter, tea dispensing lifting device, one inlet and two outlet drain valve, fairness cup, and the connection relationship of each component) are completely the same as in embodiment 1, and will not be repeated here. Only the structure and working principle of the second tea diverter with special structure of the present invention will be explained.

[0127] The specially structured second tea infusion distributor includes a lower cover, an upper cover, a tea infusion outlet pipe, a tea infusion inlet pipe, and a tea infusion outlet pipe vertical movement mechanism, wherein:

[0128] The upper and lower covers are fixedly connected to form a sealed diversion cavity. The lower cover is provided with several tea inlet pipes, the number of which matches the number of sealed tea inlet containers. In this embodiment 2, there are 7 sealed tea inlet containers, and 7 tea inlet pipes are provided on the lower cover. One end of each tea inlet pipe is connected to the inner cavity of the lower cover, and the other end serves as the tea inlet. The tea outlet pipe is connected to the tea outlet opening at the bottom of the corresponding sealed tea inlet container, so as to realize the corresponding connection or disconnection between each sealed tea inlet container and the second tea diversion device.

[0129] The top cover has a channel running from the inside to the outside, through which the tea infusion tube passes. The lower end of the tea infusion tube passes through the channel in the center of the top cover, and a dynamic seal is used between the lower outer wall of the tea infusion tube and the channel to ensure the airtightness of the diversion cavity. A sealing ring is fixedly installed in the center of the lower cover at the position corresponding to the channel of the top cover. The sealing ring is fitted with a sealing ring. After the lower part of the tea infusion tube passes through the channel of the top cover, its lower end face can be pressed against the sealing ring to seal the lower end of the tea infusion tube and prevent tea leakage.

[0130] The tea infusion tube's vertical movement mechanism drives the tea infusion tube to move up and down, opening and sealing its lower end. This mechanism includes a forward and reverse geared motor and a driven gear. The driven gear has an internal and external double gear structure, specifically including an external gear and an internal gear. The external gear and the internal gear are coaxially fixedly connected and rotate synchronously. A worm gear structure is provided on the outer surface of the upper part of the tea infusion tube, which meshes with the internal gear of the driven gear. The external gear of the driven gear meshes with the motor shaft gear of the forward and reverse geared motor, forming a transmission engagement.

[0131] Furthermore, a lip-shaped sealing ring (skeleton oil seal) is installed between the tea infusion tube and the channel in the center of the top cover, which runs from the inside to the outside. The outer ring of the sealing ring is interference-fitted with the channel in the center of the top cover, and the inner lip of the sealing ring dynamically fits the tea infusion tube, achieving a seal during the rotation of the tea infusion tube. This prevents the tea from leaking out from the gap between the tea infusion tube and the channel, ensuring that the tea can only be dispensed from the lower end of the tea infusion tube.

[0132] The working process of the tea infusion tube moving up and down mechanism is as follows: When the forward and reverse geared motor is powered on, its motor shaft gear drives the external gear of the driven gear to rotate, which in turn drives the internal gear of the driven gear to rotate synchronously; since the internal gear of the driven gear meshes with the worm gear at the top of the tea infusion tube, when the internal gear rotates, it drives the tea infusion tube to move upward along the channel in the center of the top cover, so that the lower end of the tea infusion tube separates from the sealing ring, and the lower end port of the tea infusion tube opens; when the forward and reverse geared motor rotates in the opposite direction, the tea infusion tube moves downward, and its lower end is pressed back against the sealing ring, thus sealing the lower end port of the tea infusion tube.

[0133] In this embodiment 2, the specially structured second tea infusion distributor works in conjunction with the sealed tea infusion storage container and the tea infusion lifting device to accurately distribute each brew of tea to the corresponding sealed tea infusion storage container and dispense tea as needed. The specific workflow is as follows:

[0134] 1. Tea Infusion Diversion and Storage Process: During tea brewing, after each brewing, the tea infusion lifting device of a corresponding sealed tea infusion storage container is activated, causing the lifting rod of that container to move downwards, closing the tea infusion sealing plug at the bottom, and simultaneously opening the upper opening of the sealing lower cover through the vent sealing plug. Meanwhile, the lifting rods of all other sealed tea infusion storage containers remain in the upward position, with their bottom tea infusion sealing plugs open. Since the tea infusion outlet pipe of the second tea infusion diverter is closed, this prevents tea infusion from flowing into the other sealed tea infusion storage containers. At this point, the brewed tea infusion in the teacup, after being diverted by the first tea infusion diverter, can only flow into the specific sealed tea infusion storage container through the outlet pipe and spout of that container, completing the independent storage of tea infusion for each brewing. Repeating the above operations, the tea infusion from the remaining 6 brewings can flow into 6 corresponding sealed tea infusion storage containers, achieving independent heat preservation and storage for each brewing.

[0135] 2. On-demand tea dispensing process: When a user needs tea for a specific infusion, the forward and reverse geared motor is first energized and rotated, driving the tea dispensing pipe upwards and opening its secondary port. Then, the lifting rod of the sealed tea storage container corresponding to that specific infusion is moved upwards, opening its bottom tea dispensing opening, while the tea dispensing openings of the other sealed tea storage containers remain closed. At this time, the tea in the specific sealed tea storage container flows through the tea dispensing opening and the tea dispensing pipe into the inlet pipe corresponding to the second tea dispensing distributor, then flows through the opened lower port of the tea dispensing pipe into the outlet pipe, and finally from the tea dispensing pipe's main outlet through the main outlet pipe and the tea outlet of the one-in-two-out drain valve into the fairness cup, thus realizing the output of the specific infusion.

[0136] To further explain, in this embodiment 2, the second tea infusion distributor adopts a seven-inlet, one-outlet structure (corresponding to seven sealed tea infusion storage containers). Its inlet tea infusion pipe corresponds one-to-one with the sealed tea infusion storage container. During the tea infusion distribution and storage process, the outlet tea infusion pipe of the second tea infusion distributor can be closed (i.e., the lower end of the outlet tea infusion pipe is pressed against the sealing ring), while the upper opening of one sealed tea infusion storage container is opened (the lifting rod moves down, and the vent sealing plug opens), and the upper openings of the remaining six sealed tea infusion storage containers are closed. Since the bottom outlet tea infusion openings of the remaining six sealed tea infusion storage containers are connected to the sealed second tea infusion distributor, tea infusion cannot flow in. Only the sealed tea infusion storage container with its upper opening can receive tea infusion. After the tea infusion of this batch is stored, the second tea infusion distributor can be opened to distribute and store the tea infusion of the next batch, ensuring that each batch of tea infusion accurately corresponds to one sealed tea infusion storage container, ultimately realizing the function of users retrieving any batch of tea infusion as needed.

[0137] Specifically, as shown in the attached figures, the continuous extraction and storage tea brewing machine provided in Embodiment 2 of the present invention is based on the overall structure of Embodiment 1. The core improvement is that the second tea soup distributor with a conventional structure in Embodiment 1 is replaced with a special structure distributor designed in this invention. The remaining components (tea bowl, cold water pipe, cold water pump, instant water heater, sealed tea soup storage container, first tea soup distributor, tea soup lifting device, one inlet and two outlet drain valves, fairness cup and the connection relationship of each component) are completely consistent with Embodiment 1, and will not be repeated here.

[0138] The core objective of this embodiment is to achieve precise distribution, independent storage, and on-demand retrieval of each brew of tea. For example, if tea is brewed 7 times, the tea from each brew can flow into 7 corresponding sealed tea storage containers for heat preservation. The end user can retrieve any specific brew of tea according to their needs, satisfying the differentiated taste requirements of different brews.

[0139] I. Structure of the Special Second Tea Infusion Diverter

[0140] The specially structured second tea infusion distributor mainly consists of a lower cover, an upper cover, a tea infusion outlet pipe, a tea infusion inlet pipe, and a mechanism for the vertical movement of the tea infusion outlet pipe. These components work together to achieve precise control of the tea infusion. The specific structure is as follows:

[0141] 1. Basic sealing structure: The upper cover and lower cover are fixedly connected to form a sealed diversion cavity to prevent tea leakage; the lower cover is provided with several tea inlet pipes, the number of which is exactly matched with the number of sealed tea storage containers. In this embodiment, there are 7 tea inlet pipes corresponding to 7 sealed tea storage containers; one end of each tea inlet pipe is connected to the inner cavity of the lower cover, and the other end serves as the tea inlet, which is connected to the tea outlet at the bottom of the corresponding sealed tea storage container through the tea outlet pipe.

[0142] 2. Tea dispensing tube and sealing fit: A channel from the inside to the outside is opened in the center of the upper cover. The tea dispensing tube is set through this channel. The lower end of the tea dispensing tube passes through the channel in the center of the upper cover. The lower outer wall of the tea dispensing tube is dynamically sealed with the channel. A sealing ring is fixedly installed in the center of the lower cover at the position corresponding to the channel of the upper cover. The sealing ring is fitted with a sealing ring. After the lower part of the tea dispensing tube passes through the channel of the upper cover, its lower end face can be pressed against the sealing ring to achieve a seal on the lower end of the tea dispensing tube.

[0143] Additional explanation: A lip-shaped sealing ring (skeleton oil seal) is added between the tea infusion tube and the central channel of the top cover. The outer ring of the sealing ring is interference-fitted with the channel, and the inner lip of the sealing ring dynamically fits the outer wall of the tea infusion tube. This can achieve a reliable seal during the rotation of the tea infusion tube, preventing tea from leaking out of the gap and ensuring that tea flows out only from the lower end of the tea infusion tube.

[0144] 3. Tea dispensing tube vertical movement mechanism: This mechanism drives the tea dispensing tube to move up and down, opening and sealing its lower end. It includes a forward / reverse geared motor and a driven gear. The driven gear is a double-gear structure, specifically consisting of an external gear and an internal gear. The external and internal gears are coaxially fixed and can rotate synchronously. A worm gear structure is provided on the upper outer surface of the tea dispensing tube, meshing with the internal gear of the driven gear. The external gear of the driven gear meshes with the motor shaft gear of the forward / reverse geared motor, forming a complete transmission connection.

[0145] II. Working Principle of the Special Structure Second Tea Infusion Diverter

[0146] The core function of the tea infusion tube's vertical movement mechanism is to control the raising and lowering of the tube, thereby achieving the sealing and opening of the tube opening. The specific working process is as follows:

[0147] 1. Opening of the pipe: When the forward and reverse geared motor is powered on, its motor shaft gear drives the external gear of the driven gear to rotate, which in turn drives the internal gear of the driven gear to rotate synchronously. Since the internal gear of the driven gear meshes with the worm gear at the top of the tea outlet pipe, the rotation of the internal gear will drive the tea outlet pipe to move upward along the channel in the center of the top cover, so that the lower end of the tea outlet pipe separates from the sealing ring, and the lower end of the tea outlet pipe opens, allowing the tea to flow out.

[0148] 2. Pipe sealing: When the forward and reverse geared motor rotates in the opposite direction, the transmission direction is reversed, driving the tea outlet pipe to move downward, and its lower end is pressed against the sealing ring again, thus sealing the lower end of the tea outlet pipe and preventing tea leakage.

[0149] III. Precise Diversion and Storage and On-Demand Soup Dispensing Process

[0150] This embodiment utilizes a specially structured second tea infusion distributor, in conjunction with a sealed tea infusion storage container and a tea infusion lifting device, to achieve precise distribution, storage, and on-demand retrieval of each brew of tea. The specific process is divided into two stages:

[0151] (a) Tea infusion distribution and storage process

[0152] 1. Single-batch preparation: Before brewing tea, control the tea dispensing pipe of the second tea dispensing device to move downwards, pressing the sealing ring at its lower end to seal the pipe opening; simultaneously, control the tea dispensing lifting device of the corresponding sealed tea storage container to move the lifting rod of the sealed tea storage container downwards, closing the tea sealing plug at its bottom and opening the upper opening of the sealing cover with the vent sealing plug; the lifting rods of all other sealed tea storage containers remain in the upward position, with the tea sealing plugs at their bottom open;

[0153] 2. Single-batch tea storage: After the tea soup is brewed in the tea bowl, it is diverted by the first tea soup distributor. Since the bottom tea soup outlets of the other 6 sealed tea soup storage containers are connected to the sealed second tea soup distributor, the tea soup cannot flow in. Only the sealed tea soup storage container at the top can be opened to receive the tea soup. The tea soup flows into the specific sealed tea soup storage container through the corresponding tea water pipe and tea water spout, thus completing the independent storage of tea soup for a single brewing.

[0154] 3. Repeat the storage process: Repeat the above operation, and control the opening of the top of the different sealed tea infusion containers in turn while keeping the others closed. The tea infusions from the 7 brews can flow into the 7 corresponding sealed tea infusion containers, so as to achieve independent heat preservation and storage of each brew and ensure that the flavors of the tea infusions do not mix.

[0155] (ii) The process of serving soup as needed

[0156] 1. Preparation for dispensing tea: When a user needs to obtain tea soup for a specific infusion, first control the forward and reverse geared motor to turn on and drive the tea dispensing tube to move upward, thus opening its secondary port;

[0157] 2. Precise tea dispensing: Control the lifting rod of the sealed tea infusion container corresponding to the specific tea infusion to move upward, opening the tea dispensing opening at its bottom, while keeping the tea dispensing openings of the other sealed tea infusion containers closed; at this time, the tea infusion in the specific sealed tea infusion container flows into the tea infusion pipe corresponding to the second tea infusion distributor through the tea dispensing opening and tea dispensing pipe, and then flows into the tea dispensing pipe through the lower end port of the opened tea dispensing pipe;

[0158] 3. Tea output: The tea soup is finally output from the main outlet of the tea soup pipe, through the main outlet pipe and the tea soup outlet of the one-in-two-out drain valve, and into the fairness cup, so as to achieve precise output of the tea soup for this specific brewing. Users can repeat the above operation to retrieve the tea soup of any brewing as needed.

[0159] Furthermore, a reversible geared motor is selected for both forward and reverse rotation:

[0160] I. Definition and Structural Composition

[0161] A forward / reverse geared motor is an integrated power unit that combines a bidirectional rotating drive motor with a reduction gearbox (gearbox / worm gearbox). The motor is responsible for outputting the basic speed and direction of rotation, while the reduction gearbox achieves speed reduction and torque increase through gear meshing, and accurately transmits forward and reverse motion. This invention uses a miniature DC forward / reverse geared motor (adapted to miniaturized equipment), and its common structure includes:

[0162] 1. Drive motor body (DC brushed / brushless); 2. Reduction mechanism (planetary gear / worm gear, providing a stable reduction ratio); 3. Output shaft (connected to driven gear / actuator); 4. Control interface (receives forward / reverse, start / stop, PWM speed control signals, and works with microswitches / controllers to achieve limit switches); 5. Sealed housing (moisture-proof and steam-proof, suitable for the humid and hot environment of tea makers).

[0163] II. Working Principle

[0164] 1. Reverse rotation is achieved by: DC motors changing the direction of armature current through H-bridge drive circuit, or AC motors reversing the stator rotating magnetic field by switching the phase sequence of two power lines, and the rotor rotating in the opposite direction accordingly.

[0165] 2. Speed ​​reduction and torque increase: The high-speed output shaft of the motor drives the drive wheel in the gearbox. After multi-stage gear reduction, the output shaft speed decreases and the torque is proportionally amplified (the larger the reduction ratio, the greater the torque and the lower the speed).

[0166] 3. Limit control: With the help of a micro switch, the upper and lower limit positions can be set at the center of the top cover where a channel from the inside to the outside is opened. When the tea dispensing tube moves to the upper or lower limit position, the switch is triggered to cut off the power in the corresponding direction to prevent damage to the equipment due to overtravel.

[0167] III. Specific Application and Operation Flow in the Invention (Example 2)

[0168] 1. Installation position: Integrated on the upper cover side of the second tea dispensing device, forming an up-and-down movement mechanism for the tea dispensing tube with the driven gear (internal and external double gears);

[0169] 2. Action Flow

[0170] Tea dispensing preparation: When the forward and reverse geared motor is powered on in the forward direction, the motor shaft gear drives the driven gear to rotate, and the internal gear rotates synchronously and meshes with the worm gear at the upper part of the tea dispensing tube, driving the tea dispensing tube to move upward, separating the lower end from the sealing ring, and opening the port;

[0171] Stop / Seal: When the motor stops or is powered in reverse, the tea outlet tube moves downward and the lower end presses against the sealing ring to seal the port.

[0172] Precise brewing coordination: Only the top opening of one sealed tea infusion container is opened each time, while the others are closed. The forward and reverse rotation of the motor is linked to the lifting rod to ensure that each brew of tea is accurately poured into the corresponding container. When dispensing tea as needed, only the passage corresponding to the target container is opened.

[0173] IV. Key Selection and Usage Precautions

[0174] 1. Selection parameters: reduction ratio (recommended 1:30-1:100, to ensure sufficient torque to drive the tea tube and overcome sealing resistance), rated voltage (12V / 24V DC, suitable for household equipment), output torque, protection level (IP54 and above, steam and splash resistant), limit accuracy;

[0175] 2. Precautions for use: Avoid frequent switching between forward and reverse directions to prevent motor overheating; never dry grind the sealing surface without water to avoid resistance overload; regularly check the gearbox lubrication (use food-grade grease); wiring must be protected against short circuits caused by steam condensate;

[0176] 3. Difference from conventional reversible motors: Ordinary reversible motors have high speed and low torque, and cannot directly drive tea spouts with sealing resistance; geared motors integrate a gearbox, providing sufficient torque to achieve slow and smooth up-and-down movement, avoiding tea splashing or seal failure. For example, a motor can be used with a PWM DC motor speed controller (12V, 24V, 36V, 48V) and a 40A reversible switch (sold by Shenzhen Futian District Haisenda Weiye Electronics Store) to achieve forward and reverse operation, or a motor can be used with a Delixi Electric three-phase or single-phase motor reversible switch (QS-15A, 30A, 60A waterproof switch QS-60) to achieve forward and reverse operation.

[0177] The structure and working principle of the second tea infusion distributor described in this embodiment

[0178] The second tea infusion distributor with a special structure is designed to achieve precise control of the tea infusion. Its overall structure consists of five core components: a lower cover, an upper cover, a tea infusion outlet pipe, a tea infusion inlet pipe, and a mechanism for the vertical movement of the tea infusion outlet pipe. These components work together to ensure the sealing and controllability of the infusion process. Specific structural details are as follows:

[0179] I. Basic Sealing Structure

[0180] The basic sealing structure is the core foundation for preventing leakage in the distributor, mainly composed of the upper cover, lower cover, and tea inlet pipe, with the specific configuration as follows:

[0181] 1. The upper and lower lids are fixedly connected, forming a sealed diversion cavity after they are joined together. This structure prevents tea leakage and provides a sealed space for tea diversion.

[0182] 2. Several tea inlet pipes are installed through the lower cover. The number of tea inlet pipes is completely matched with the number of sealed tea inlet containers used with it, ensuring that each container corresponds to an independent tea inlet channel. In this embodiment, there are 7 sealed tea inlet containers, so 7 tea inlet pipes are installed accordingly.

[0183] 3. The tea inlet pipe is connected as follows: one end is connected to the inner cavity of the lower cover to ensure that the tea can smoothly enter the distribution cavity; the other end serves as the tea inlet, which is fixedly connected to the tea outlet opening at the bottom of the corresponding sealed tea storage container through the tea outlet pipe, so as to achieve precise docking between the storage container and the distributor and ensure smooth tea delivery.

[0184] II. Tea Inlet Pipe and Sealing Structure

[0185] The tea infusion outlet pipe is the core channel for the tea infusion flow distributor. Its sealing structure directly affects the distribution accuracy and leakage prevention effect. The specific settings and supplementary explanations are as follows:

[0186] 1. A through-channel (from the inside to the outside) is provided in the center of the top cover. The tea infusion tube is set vertically through this channel. The lower end of the tea infusion tube passes through the central channel of the top cover. The lower outer wall of the tube and the inner wall of the channel are fitted with a dynamic seal to take into account both the movement requirements of the tea infusion tube and the basic sealing performance.

[0187] 2. A sealing ring is fixedly installed in the center of the lower cover, directly below the central channel of the upper cover. The outer part of the sealing ring is fitted over the sealing ring sleeve. After the lower part of the tea infusion tube passes through the channel of the upper cover, its lower end face can be tightly pressed against the sealing ring, thereby sealing the lower end of the tea infusion tube and blocking the leakage path of the tea infusion.

[0188] Additional notes (sealing and reinforcement structure)

[0189] To further enhance sealing reliability, a lip seal (also known as a skeleton oil seal) is added between the tea infusion tube and the central channel of the top cover. The outer ring of the seal is interference-fitted with the inner wall of the channel to ensure that the seal is firmly fixed and without loosening. The inner lip dynamically fits the outer wall of the tea infusion tube, so that a reliable seal can be achieved even when the tea infusion tube is rotating. This effectively prevents tea from leaking out from the gap between the tea infusion tube and the channel, ensuring that the tea can only flow out from the lower end of the tea infusion tube, thus ensuring the accuracy of the flow distribution.

[0190] III. Up-and-down movement mechanism of the tea infusion tube

[0191] The core function of this mechanism is to drive the tea infusion tube to move up and down, thereby opening and sealing the lower end of the tube and achieving controllable tea infusion distribution. It mainly consists of a drive component, a transmission component, and auxiliary control components, with the specific structure and their coordination as follows:

[0192] 1. Core components: including forward and reverse geared motors, driven gears, and equipped with up and down microswitches and L298N motor drive board. The driven gear adopts a double gear structure, specifically divided into an external gear and an internal gear.

[0193] 2. Gear meshing relationship: The external gear and the internal gear are coaxially fixedly connected, and they can rotate synchronously to ensure that there is no misalignment in the transmission process; a worm gear structure is machined on the outer surface of the upper part of the tea infusion tube. This worm gear structure meshes with the internal gear of the driven gear to form a worm gear transmission mesh; the external gear of the driven gear meshes with the motor shaft gear of the forward and reverse geared motor, thus forming a complete transmission link to realize the transmission of motor power to the tea infusion tube.

[0194] 3. Action Implementation: The forward and reverse rotation of the geared motor is controlled by the L298N motor drive board. The motor power is transmitted to the worm gear structure of the tea infusion tube through the gear transmission link, thereby driving the tea infusion tube to move up and down. With the help of the up and down micro switches, the movement of the tea infusion tube can be precisely controlled to achieve the precise opening (disengagement from the sealing ring) and sealing (tightening the sealing ring) of its lower end, thus completing the start and stop control of tea infusion diversion.

[0195] IV. Overall Collaborative Work Description

[0196] The components of the diverter work together to achieve precise control of the tea infusion: the tea infusion in the sealed tea infusion storage container enters the sealed diversion cavity formed by the upper and lower lids through the tea infusion inlet pipe; the tea infusion outlet pipe is driven to move downward by the up-and-down moving mechanism, and its lower end face presses against the sealing ring to achieve a pipe opening seal; when diversion is required, the mechanism drives the tea infusion outlet pipe to move upward, the lower end of the pipe opening disengages from the sealing ring, and the tea infusion inside the cavity flows out through the tea infusion outlet pipe, completing the tea infusion dispensing to the fairness cup; the lip seal ring and the dynamic seal work together to prevent tea infusion leakage throughout the process, ensuring that the diversion process is precise and reliable.

[0197] V. Circuit Design

[0198] The core of this shunt circuit design is to provide stable and precise drive and control for the up-and-down movement mechanism of the tea infusion tube, realizing automated control of the tea infusion tube's start-up, stop, and travel limit. The entire circuit is built around the L298N motor driver board, adapting to the working requirements of forward and reverse geared motors and up-and-down microswitches, balancing safety and controllability. The specific design is as follows:

[0199] 5.1 Circuit Components

[0200] The circuit system of this application embodiment mainly consists of a control module, a drive module, an execution module, a limit module, and a power supply module. This is a technology that can be implemented by a person skilled in the art. If this invention is simplified, it does not use microswitches or reversible motors to control forward and reverse rotation. Instead, the tea outlet tube is manually rotated upwards to raise it, causing the lower end of the tube to disengage from the sealing ring, allowing the tea inside the cavity to flow out through the outlet tube, thus completing the tea dispensing process to the fairness cup. Alternatively, manually rotating the tea outlet tube downwards causes its lower end to press against the sealing ring, sealing the outlet and preventing tea from dispensing. The selection and functional matching of each module component in this application embodiment to the overall working requirements of the distributor are as follows:

[0201] 1. Control Module: A microcontroller (such as STC89C52) is selected as the core control unit. It is responsible for receiving signals from the limit module, outputting motor forward and reverse control commands, and realizing the logic scheduling of the entire circuit. The microcontroller has sufficient pin resources and can be directly connected to the drive module and limit module. It has high control accuracy and low power consumption, and is suitable for the precise control requirements of the shunt.

[0202] 2. Drive Module: The L298N motor driver board is used as a bridge between the microcontroller and the forward / reverse geared motor. It receives control commands from the microcontroller and provides a stable drive current to the motor. The L298N driver board supports forward / reverse rotation and start / stop control of the motor. The output current meets the operating requirements of the geared motor and has overcurrent protection to prevent motor overload damage and ensure circuit safety. Shenzhen Xinyi Technology Co., Ltd. independently develops and manufactures fully compatible L298N driver chips and driver board modules. The products are suitable for forward / reverse control of DC motors and geared motors, possessing good compatibility and stability, and are suitable for the circuit application scenarios of this shunt.

[0203] 3. Execution Module: This is the forward and reverse geared motor, which serves as the execution component of the circuit. It receives the drive signal from the L298N driver board to achieve forward and reverse rotation, and then drives the tea infusion tube to move up and down through the transmission mechanism. The motor speed and torque are adapted to the stroke control requirements of the shunt, ensuring that the tea infusion tube moves smoothly and accurately.

[0204] 4. Limit Module: Composed of two microswitches, one above the other, installed at the upper and lower limit positions of the channel opening from the inside to the outside in the center of the top cover, or at the limit positions of the tea dispensing tube's vertical movement (sealed position and open position). It is used to detect the end point of the tea dispensing tube's stroke. The microswitches are normally open. When the tea dispensing tube moves to the limit position, it triggers the microswitches to close, sending a limit signal to the microcontroller to achieve precise stroke limitation and prevent the motor from running idle or the components from being damaged.

[0205] 5. Power Supply Module: A DC power supply is used, selected according to the working voltage of the motor and the microcontroller (e.g., 12V DC power supply) to provide stable power to the entire circuit system; a fuse is connected in series in the power supply circuit to prevent short circuits from burning out components, and a separate voltage regulator module (e.g., 7805 voltage regulator chip) is set up for the microcontroller to convert the 12V voltage to 5V to ensure stable operation of the microcontroller.

[0206] 5.2 Circuit Connection Logic

[0207] The modules are precisely connected to each other to ensure smooth signal transmission and reliable control logic. The specific connection relationships are as follows, taking into account both ease of installation and future maintainability:

[0208] 1. Power supply circuit connection: The positive terminal of the DC power supply is divided into two paths. One path is connected to the power input terminal of the L298N driver board to power the driver board and the geared motor. The other path is connected to the input terminal of the voltage regulator module, and after voltage regulation, it outputs a 5V voltage, which is connected to the power pin of the microcontroller to power the microcontroller. The negative terminal of the power supply is grounded to form a complete power supply circuit. All grounding terminals are connected together to avoid signal interference.

[0209] 2. Control loop connection: The two I / O pins of the microcontroller are connected to the forward and reverse control pins (IN1, IN2) of the L298N driver board, respectively. By outputting high and low level signals, the driver board is controlled to output drive current in the corresponding direction, thereby controlling the motor to rotate forward (driving the tea tube to move upward) and reverse (driving the tea tube to move downward); one I / O pin of the microcontroller is connected to the enable pin (ENA) of the L298N driver board. By outputting a high level to start the driver board and a low level to turn off the driver board, the overall control of the motor start and stop is realized.

[0210] 3. Limit circuit connection: One end of each of the upper and lower microswitches is connected to two I / O pins of the microcontroller (interrupt pins take priority), and the other end is grounded. When the microswitch is triggered to close, the corresponding microcontroller pin detects a low-level signal, and the microcontroller immediately outputs a command to control the L298N driver board to stop the motor and achieve travel limit. At the same time, the microswitch and the motor drive circuit are linked to form a double protection to prevent component damage caused by limit failure.

[0211] 4. Execution circuit connection: The two output terminals (OUT1, OUT2) of the L298N driver board are respectively connected to the two terminals of the forward and reverse geared motor. The forward and reverse current output by the driver board drives the motor to rotate forward and reverse. The motor casing is grounded to prevent motor leakage and improve circuit safety.

[0212] 5.3 Circuit Function Implementation

[0213] The circuit system and mechanical structure work together to achieve automated and precise control of the up-and-down movement of the tea infusion tube, adapting to the tea infusion control requirements of the distributor. The specific functional logic is as follows:

[0214] 1. Initial state: The microcontroller is powered on and initialized. The enable pin of the L298N driver board is at a low level. The motor is in a stopped state. The lower end of the tea infusion tube is pressed against the sealing ring and is in a sealed state. The upper and lower microswitches are both in the normally open state. The microcontroller does not detect the limit signal.

[0215] 2. Tea dispensing tube opening control: When diversion is required, the microcontroller outputs a control command, making the IN1 pin of the L298N driver board high, the IN2 pin low, and the ENA pin high. The driver board outputs positive current, and the motor rotates forward. The motor power drives the tea dispensing tube to move upward through the transmission mechanism. When it moves to the opening limit position, it triggers the upper micro switch to close. The microcontroller detects the limit signal and immediately controls the ENA pin to go low, the motor stops running, the tea dispensing tube remains open, and the tea begins to be diverted.

[0216] 3. Tea dispensing tube sealing control: After the current split is completed, the microcontroller outputs a control command, making the IN1 pin of the L298N driver board low, the IN2 pin high, and the ENA pin high. The driver board outputs a reverse current, and the motor reverses. This causes the tea dispensing tube to move downwards. When it reaches the sealing limit position, it triggers the lower microswitch to close. The microcontroller detects the limit signal and controls the ENA pin to go low, stopping the motor. The lower end of the tea dispensing tube presses against the sealing ring, restoring the sealing state, and the current split stops.

[0217] 4. Protection Function: The circuit has a dual protection mechanism. First, the L298N driver board has overcurrent protection. When the motor is overloaded or the circuit is short-circuited, the driver board automatically cuts off the output to protect the motor and the circuit. Second, the micro switch has limit protection to prevent the tea dispensing tube from exceeding its travel range, avoid mechanical parts from wearing or jamming, and prevent the motor from burning out due to idling, thus ensuring the long-term stable operation of the shunt.

[0218] 5.4 Circuit Design Considerations

[0219] 1. Wiring specifications: All terminals must be securely fastened to avoid poor contact that could lead to abnormal motor operation; control signal lines and power lines should be laid out separately to prevent electromagnetic interference from the power lines from affecting the transmission of control signals and to ensure accurate transmission of limit signals and control commands.

[0220] 2. Insulation treatment: All exposed wiring points and pins of the circuit must be insulated. In particular, the shunt may be exposed to tea steam in its working environment, so waterproof insulation materials should be selected to prevent steam condensation from causing short circuits and to improve the circuit's moisture resistance.

[0221] 3. Component matching: The motor model, micro switch travel, and power supply voltage must match the parameters of the L298N driver board and microcontroller to avoid motor weakness, inaccurate limit switching, or circuit damage due to parameter mismatch; it is recommended to use waterproof micro switches to adapt to the working environment of the shunt.

[0222] 4. Debugging and Calibration: After the circuit is installed, debugging and calibration are required. Adjust the installation position of the micro switch to ensure that the limit is accurately triggered when the tea infusion tube moves to the limit position; test the forward and reverse directions of the motor to ensure that it is consistent with the up and down movement direction of the tea infusion tube. It can be put into use after debugging is correct.

[0223] Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A continuous extraction and storage tea brewing machine, comprising a tea bowl, a cold water pipe, a cold water pump, an instant water heater, and at least two sealed tea infusion storage containers; the cold water pipe is connected to the cold water inlet of the cold water pump, the cold water outlet of the cold water pump is connected to the cold water outlet of the instant water heater, and the hot water outlet of the instant water heater is connected to the hot water inlet of the tea bowl; the tea bowl is equipped with a filter screen, and the tea infusion outlet of the tea bowl is connected to the inlet of the hot water pump, characterized in that, The outlet of the hot water pump is connected to the inlet of the first tea diverter. The first tea diverter has a one-inlet, multiple-outlet structure, and the number of its outlet branches matches the number of sealed tea storage containers. Each tea outlet of the first tea diverter is connected to a sealed tea storage container through its own tea outlet pipe and tea outlet nozzle. Each sealed tea storage container is equipped with a tea outlet lifting device, and the bottom of the sealed tea storage container is equipped with a tea outlet opening. Each tea outlet opening is connected to the corresponding inlet of the second tea diverter through a tea outlet pipe. The second tea diverter has a multiple-inlet, one-outlet structure. The total tea outlet of the second tea diverter is connected to the fairness cup through the total tea outlet pipe and the total tea outlet of the one-inlet, two-outlet drain valve. The other outlet of the one-inlet, two-outlet drain valve is the rinsing outlet.

2. The continuous extraction and storage tea brewing machine according to claim 1, characterized in that, The inner cavity of the sealed tea infusion container is inverted cone shape.

3. The continuous extraction and storage tea brewing machine according to claim 1, characterized in that, The tea outlet of the first tea diverter uses a spiral feeding method to feed liquid into the corresponding sealed tea storage container.

4. The continuous extraction and storage tea brewing machine according to claim 1, characterized in that, The inlet-outlet drain valve is composed of two two-position two-way solenoid valves connected in parallel. The inlets of the two two-position two-way solenoid valves are connected in parallel to form a total inlet, which is connected to the total outlet pipe of the tea soup. The two outlets are the total outlet of the tea soup and the rinsing outlet, respectively.

5. The continuous extraction and storage tea brewing machine according to any one of claims 1-4, characterized in that, The sealed tea infusion container has a sealed lower cover at the top, with a conical upper opening at the bottom. The venting and sealing plug on the lifting rod of the tea infusion dispensing device matches the conical upper opening of the lower cover, and the tea infusion sealing plug on the lifting rod matches the tea infusion dispensing opening at the bottom of the sealed tea infusion container. A preset distance exists between the venting and sealing plugs. The lower cover has a circular track, the inner cavity of which communicates with the conical upper opening. A sealed upper cover is fixed above the lower cover, and the upper cover has an opening for the tea infusion dispensing device. The tea dispensing lifting device includes a lifting rod that moves up and down via a moving pipe connected to the inner cavity of a circular track. The tea dispensing lifting device comprises a lifting rod, a rotating gear, and a worm gear. The lifting rod, from top to bottom, is provided with an external gear, a vent sealing plug, and a tea dispensing sealing plug. The rotating gear includes an integrally formed internal gear, a worm gear, and a circular groove. The external gear of the lifting rod is worm-shaped and meshes with the internal gear of the rotating gear. The circular groove is embedded in the circular track of the sealing lower cover and can rotate relative to it. The worm gear meshes with the worm gear.

6. The continuous extraction and storage tea brewing machine according to claim 5, characterized in that, The lifting rod is made of a worm gear, which meshes with the motor shaft of the forward and reverse motor. The forward and reverse motor is connected to an external power source through a micro switch and can be controlled to rotate in both directions. The micro switch is a normally closed waterproof micro switch, which corresponds to the lower limit position and the upper limit position of the lifting rod, respectively. The two micro switches, the motor drive board, and the DC regulated power supply constitute a control circuit. When the forward and reverse motor rotates forward, the lifting rod moves upward, opening the conical upper opening and simultaneously closing the tea dispensing opening at the bottom of the sealed tea infusion container. When the forward and reverse motor rotates in reverse, the lifting rod moves downward, closing the conical upper opening and simultaneously opening the tea dispensing opening at the bottom of the sealed tea infusion container.

7. The continuous extraction and storage tea brewing machine according to claim 1, characterized in that, The second tea dispensing device includes a lower cover, an upper cover, a tea dispensing pipe, a tea inlet pipe, and a tea dispensing pipe vertical movement mechanism. The upper cover and the lower cover are fixedly connected to form a sealed dispensing cavity. The lower cover is provided with a number of tea inlet pipes matching the number of sealed tea storage containers. One end of each tea inlet pipe is connected to the dispensing cavity, and the other end is connected to the tea dispensing opening of the corresponding sealed tea storage container through the tea dispensing pipe. The upper cover has a through channel in the center, through which the tea dispensing pipe passes and is dynamically sealed with the channel at its lower part. The lower cover has a sealing ring and a sealing sleeve in the center corresponding to the channel position. The lower end of the tea dispensing pipe can be pressed against the sealing ring to achieve a seal.

8. The continuous extraction and storage tea brewing machine according to claim 7, characterized in that, The tea infusion tube's vertical movement mechanism includes a forward and reverse geared motor and a driven gear. The driven gear has an internal and external double gear structure, including an external gear and an internal gear fixed coaxially. A worm gear structure is provided on the upper outer side of the tea infusion tube, which meshes with the internal gear of the driven gear. The external gear of the driven gear meshes with the motor shaft gear of the forward and reverse geared motor. A lip-shaped sealing ring is provided between the tea infusion tube and the central channel of the upper cover. The outer ring of the lip-shaped sealing ring is interference-fitted with the channel, and the inner lip is dynamically fitted with the tea infusion tube.

9. The continuous extraction and storage tea brewing machine according to claim 8, characterized in that, The tea dispensing tube's vertical movement mechanism is equipped with upper and lower micro switches and a motor drive board. The upper and lower micro switches are respectively installed at the extreme positions of the tea dispensing tube's vertical movement, used to detect the tea dispensing tube's stroke and trigger the forward and reverse geared motor to start and stop.

10. The continuous extraction and storage tea brewing machine according to claim 9, characterized in that, The tea infusion tube moving up and down mechanism also includes a microcontroller control module. The microcontroller is electrically connected to the motor drive board, the forward and reverse geared motor, and the micro switch to form an automated control circuit. The power supply module uses a DC power supply and is equipped with a voltage regulator chip to provide a stable voltage for the microcontroller.

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