A food processing machine with tea extraction function

Abstract

This application provides a food processor with tea extraction function. The food processor includes a base and a cup body mounted on the base. An inflation assembly is provided inside the base. A tea strainer assembly with a filter screen at the bottom is movably disposed at the mouth of the cup body. The tea strainer assembly can be sealed and pressed against the mouth of the cup. An inner cavity and an outer cavity are formed by the sidewall of the tea strainer assembly, the sidewall of the cup body, and the liquid surface. A pressure relief hole is provided on the tea strainer assembly, connecting the inner cavity and the outer cavity. The inflation assembly includes an air pump corresponding to the outer cavity. The air pump is controlled to work intermittently, working with the pressure relief hole to regulate the gas pressure inside the outer cavity, pressing down on the liquid surface to form a circulating water flow through the filter screen. By controlling the intermittent operation of the air pump, the liquid can move back and forth inside and outside the tea strainer assembly, thereby achieving effective extraction of the material and expanding the tea-drinking function of the juicer.

Description

Technical Field

[0001] This application relates to the field of food processing machine technology, specifically to a food processing machine with tea extraction function. Background Technology

[0002] With social development and improved living standards, people are paying more and more attention to healthy eating. As a result, various industrial food processing machines have gradually become smaller and entered thousands of households. Juicers and slow juicers not only meet people's needs for healthy and nutritious food, but also greatly improve people's quality of life and are loved by people. In particular, tea drinks are becoming increasingly popular due to their effects of refreshing, eliminating fatigue, health care, and anti-aging.

[0003] Currently, most tea brewing cups on the market use a dual-pump manufacturing process, including an air pump to draw liquid from the container into the tea strainer and an air pump to press the liquid into the liquid container. Multiple pumps make the overall structure complex and increase costs. At the same time, because they occupy a large volume, they cannot accommodate other functional components. As a result, most existing tea brewing cups have the problem of limited functionality, lack a variety of flavors, and thus limit the consumer base, usage scenarios, and frequency of product use.

[0004] During the extraction process, if the cup is tilted, the liquid in the container may be directly sucked into the pump during the suction phase, causing serious damage to the pump or water accumulation in the pipeline, increasing the user's maintenance costs and causing great cleaning trouble. Long-term use will lead to residue accumulation, seriously reducing the overall extraction quality of the machine and affecting the user's drinking health.

[0005] Therefore, improving the quality of tea extraction and the user experience is an important development direction for tea machines, but so far no ideal product has emerged. Summary of the Invention

[0006] The purpose of this invention is to provide a food processing machine with tea extraction function, which combines a juicer and a tea extractor to improve the overall tea extraction quality and portability, realize fruit tea function, enrich the flavor of extracted tea, and improve the user experience.

[0007] The above-mentioned technical problems of the present invention are mainly solved by the following technical solutions:

[0008] A food processing machine with tea extraction function includes a base and a cup body mounted on the base. The base is provided with an inflation component. A tea strainer component with a filter screen at the bottom is movably disposed at the mouth of the cup body. The tea strainer component can be sealed and pressed against the mouth of the cup. An inner cavity and an outer cavity are formed by the side wall of the tea strainer component, the side wall of the cup body, and the liquid surface. A pressure relief hole is provided on the tea strainer component to connect the inner cavity and the outer cavity. The inflation component includes an air pump connected to the inside of the cup body. The air pump is controlled to work intermittently and, together with the pressure relief hole, regulates the gas pressure in the outer cavity, pushing the liquid through the filter screen to flow back and forth.

[0009] Furthermore, the pressure relief hole is located at the top of the tea infuser assembly, and the air outlet rate of the pressure relief hole is less than the air inlet rate of the air pump.

[0010] Furthermore, when the air pump is working, gas begins to accumulate in the outer cavity, and the liquid level in the outer cavity begins to drop under the gas pressure, while the liquid level in the inner cavity rises accordingly. When the air pump stops working, the high-pressure gas in the outer cavity is discharged through the pressure relief hole, the liquid level in the outer cavity begins to rise again, and the liquid level in the inner cavity falls back accordingly.

[0011] Furthermore, the top of the cup body also includes a movable lid, which closes on the cup body and presses down on the tea infuser assembly.

[0012] Furthermore, the cup lid is provided with an exhaust channel that communicates with the outside. The exhaust channel includes a drinking spout and a flip cover that closes to the drinking spout. When the flip cover is opened, the inner cavity communicates with the outside through the drinking spout to balance the air pressure inside the cup.

[0013] Furthermore, the bottom of the cup body is provided with an air inlet that communicates with the air pump, and the air inlet is offset from the center of the cup body.

[0014] Furthermore, the outer wall of the tea strainer assembly is also provided with an air guide, and the projection of the air guide and / or the outer cavity in the vertical direction covers the air inlet, guiding the air inlet to fill the outer cavity with gas.

[0015] Furthermore, the air guide includes an air guide tube or a guide surface, with the two ends of the air guide tube connected to the air inlet and the outer cavity, respectively; the upper end of the guide surface is inclined near the side wall of the cup body.

[0016] Furthermore, the filter screen is horizontally positioned at the bottom of the tea strainer assembly, and a filter cover is movably positioned above the filter screen, forming an extraction space for accommodating the extracted material between the filter screen and the filter cover.

[0017] Furthermore, the food processing machine also includes a drive motor disposed within the machine base and a stirring blade disposed within the cup body and connected to the drive motor for transmission. The drive motor is offset from the center of the cup body and is positioned opposite to the air pump.

[0018] The advantages of this application compared to the prior art are:

[0019] The food processing machine provided in this application includes an air-inflating component installed in the base and a tea infuser component installed inside the cup. The air-inflating component drives water to circulate inside the tea infuser component to achieve the extraction function, thereby realizing the tea extraction function inside the cup and improving the portability of tea extraction. The tea infuser component is sealed at the mouth of the cup with a cap. The side wall of the tea infuser component divides the internal space of the cup into an inner cavity inside the tea infuser component and an outer cavity between the side walls of the cup. The inner and outer cavities are connected by a pressure relief hole on the tea infuser component. Since the air pump is correspondingly set to the outer cavity, by controlling the intermittent operation of the air pump, gas can be injected into the outer cavity. At the same time, by using the intermittent operation period to adjust the ratio between the amount of gas injected into the outer cavity and the amount discharged through the pressure relief hole, the gas pressure in the outer cavity is circulated and adjusted. The gas pressure drives the water to flow through the filter screen and reciprocate in the inner cavity, thereby achieving the extraction function through the water flow.

[0020] The pressure relief vent is located at the top of the tea infuser assembly, and the air outlet rate of the vent is lower than the air inlet rate of the air pump. This ensures that the gas pressure in the outer cavity gradually increases when the air pump is operating. Based on the preset relationship between the air pump's operating power and the vent's orifice diameter, the process of increasing gas pressure in the outer cavity during air pump operation can be further determined. Based on the intermittent periods of air pump operation and the vent's orifice diameter, the process of decreasing circulating water volume within the tea extraction assembly can be further determined, ensuring efficient and stable extraction in each individual process.

[0021] By controlling the intermittent operation of the air pump, the extraction process can be repeated multiple times. When the air pump is working, gas begins to accumulate in the outer cavity, and the liquid level in the outer cavity begins to drop under the gas pressure, while the liquid level in the inner cavity rises accordingly. When the air pump stops working, the high-pressure gas in the outer cavity is discharged through the pressure relief hole, the liquid level in the outer cavity begins to rise again, and the liquid level in the inner cavity falls back down accordingly. The gas pressure drives the circulating water through the filter screen, circulating up and down within the tea infuser assembly to extract the material, thereby improving the overall tea extraction efficiency of the machine.

[0022] The top of the cup body has a detachable lid, and the bottom of the cup body is integrated with the base. When the lid is installed on the cup body, the lid and the tea infuser assembly will abut against each other. At the same time as the lid is installed, it will press and fix the tea infuser assembly, ensuring the reliability of the whole machine in the tea extraction process and preventing the tea infuser assembly from being pushed upward due to excessive pressure in the outer cavity. In the extraction mode, the tea infuser assembly can maintain the internal gas pressure with the external atmospheric pressure through the drinking port, ensuring that a safe and stable pressure difference is formed inside and outside the tea infuser assembly, and ensuring that the water flow is consistent in each reciprocating motion.

[0023] The lid also features an exhaust channel that connects to the outside environment. This channel includes a drinking spout running vertically through the cup and a flip-top lid that fits over the drinking spout. When the flip-top lid is opened, the inner cavity connects to the outside environment through the drinking spout, allowing gas released from the pressure relief hole in the outer cavity to be directly discharged outwards, ensuring that the gas pressure in the inner cavity matches the external atmospheric pressure. Since the gas pressure in the inner cavity remains constant, only a single air pump is needed to regulate the gas pressure in the outer cavity to achieve the reciprocating flow of circulating water within the tea infuser assembly for extraction.

[0024] The bottom of the cup has an air inlet that connects to the air pump. This air inlet is offset from the center of the cup. When the air pump starts working, gas is ejected from the air inlet. Because the air inlet is offset from the center of the cup, and the vertical projection of the side wall of the tea strainer assembly covers the air inlet, the filter at the bottom of the tea strainer assembly and the air inlet are misaligned in the vertical direction. This prevents the gas from directly hitting the filter in the center of the cup and entering the inner cavity during its ascent. This improves the reliability of the gas filling in the outer cavity and ensures the extraction efficiency.

[0025] A gas guide can be provided on the side wall of the tea infuser assembly. The gas guide includes a cup body set on the tea infuser assembly and a gas guide tube extending vertically along the main body. The two ends of the gas guide tube are connected to the air inlet and the outer cavity, respectively. The gas in the air inlet can be directly transported to the outer cavity through the gas guide tube, which can minimize the interference of turbulence in the cup body on the upward trajectory of the gas.

[0026] The tea strainer assembly can also be designed with a contraction at the bottom of the side wall, forming an inclined guide surface at the lower end of the side wall. Since the upper part of this guide surface is inclined close to the side wall of the cup, some of the gas ejected from the air inlet will collide with the guide surface and gather between the side wall of the tea strainer assembly and the side wall of the cup during the upward process. It will continue to rise upward by buoyancy, guiding the gas to converge into the outer cavity, thus improving the reliability of gas filling during the tea extraction process.

[0027] The filter screen is horizontally positioned at the bottom of the tea infuser assembly and is integrally formed with the lower side wall of the tea infuser assembly. A filter cap with perforations is also movably mounted above the filter screen. By closing the filter cap inside the tea infuser assembly, an extraction space is formed between the filter screen and the filter cap to accommodate the extracted material. Through the restriction of the extraction space, the circulating water can form a certain compression relationship with the filter screen or filter cap during the reciprocating motion, which further improves the tea extraction efficiency. When the tea extraction is complete, the extraction space can also further block and filter the material to prevent the extracted material from flowing out and affecting the user's drinking experience.

[0028] The food processing machine provided in this application is specifically a portable juicer, which also includes a drive motor installed in the base and a stirring blade installed in the cup body and connected to the drive motor for transmission. The drive motor is offset from the center of the cup body and is opposite to the air pump. Since the portable juicer is generally relatively small, setting the drive motor off-center from the cup body allows sufficient space to be reserved in the base for installing the air pump, which greatly improves the portability of the whole machine while ensuring functionality. At the same time, during the tea extraction process, proper stirring can cause the extracted materials to tumble, increase the impact of water flow and materials, and improve extraction efficiency. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of a food processing machine with tea extraction function, as shown in one embodiment of this application.

[0031] Figure 2 This is a schematic diagram of the air pump in its working state during inflation, as shown in an embodiment of this application.

[0032] Figure 3 This is a schematic diagram of the liquid level state of the air pump in operation, as shown in one embodiment of this application;

[0033] Figure 4 This is a schematic diagram of a food processing machine with an air guide section according to an embodiment of this application;

[0034] Figure 5 This is a schematic diagram of the liquid level of a tea strainer assembly in a first depressurization state, as shown in one embodiment of this application.

[0035] Figure 6 This is a schematic diagram of the liquid level of a tea strainer assembly in a second depressurization state, as shown in one embodiment of this application.

[0036] Figure 7 This is a schematic diagram of the extraction space within a tea strainer assembly according to an embodiment of this application;

[0037] Figure 8 This is a schematic diagram of the installation position structure inside the base of a food processing machine according to an embodiment of this application;

[0038] Figure 9 This is a schematic diagram of the food processing machine in extraction mode, as shown in one embodiment of this application;

[0039] Figure 10 This is a schematic diagram of the food processing machine in juicing mode, as shown in one embodiment of this application.

[0040] Icons: 1-Base, 2-Cup body, 3-Inflation component, 4-Tea strainer component, 5-Cup lid;

[0041] 21-Outer cavity, 22-Inner cavity, 23-Stirring blade, 24-Air inlet, 26-Guide surface;

[0042] 211 - Gas storage space, 251 - Main body, 252 - Gas guide pipe;

[0043] 31-Air pump, 32-Drive motor, 33-Fixed bracket, 34-Control board, 35-Button switch;

[0044] 341-Wiring channel, 342-Magnetic switch, 351-Function button, 352-Child lock button;

[0045] 41-Filter screen, 42-Filter cover, 43-Pressure relief hole, 44-Annular sidewall, 45-Positioning edge, 46-Lock structure;

[0046] 411-Extraction space, 412-Main body, 413-Enclosure, 421-Buffer space, 431-First pressure relief hole, 432-Second pressure relief hole;

[0047] 51-Exhaust channel, 52-Drinking port, 54-Filter screen. Detailed Implementation

[0048] The terms “first,” “second,” “third,” etc., are used only for distinguishing descriptions and do not indicate a sequence number, nor should they be interpreted as indicating or implying relative importance.

[0049] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0050] In the description of this application, it should be noted that the terms "inner", "outer", "left", "right", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0051] In the description of this application, unless otherwise expressly specified and limited, the terms “set up,” “install,” “connect,” and “link” shall be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; as a direct connection or an indirect connection through an intermediate medium; or as a connection within two components.

[0052] The technical solution of this application will now be clearly and completely described with reference to the accompanying drawings.

[0053] Please refer to Figure 1 This is a schematic diagram of a food processing machine with tea extraction function according to an embodiment of this application. The food processing machine includes a base 1 and a cup body 2 disposed on the base 1. An air inflation component 3 and a drive motor 32 disposed opposite to the air inflation component 3 are disposed inside the base 1. A stirring blade 23 connected to the drive motor 32 is disposed at the bottom of the cup body 2. A tea infuser component 4 is movably installed at the mouth of the cup body 2. The air inflation component 3 includes an air pump 31 disposed biasedly at the bottom of the cup body 2. The tea infuser component 4 includes a circumferentially closed annular sidewall 44 and a filter screen 41 disposed at the bottom of the annular sidewall 44. The annular sidewall 44 and the filter screen 41 enclose a space for holding the extracted material.

[0054] The tea strainer assembly 4 is fitted onto the mouth of the cup body 2. The top of the annular side wall 44 is provided with a positioning edge 45 that matches and positions the cup mouth. By pressing the positioning edge 45 onto the cup mouth, the relative position between the tea strainer assembly 4 and the cup body 2 is stable, and the contact parts of the two abut against each other and seal.

[0055] Please refer to Figure 2 and 3This is a schematic diagram of the gas pump of a food processor in operation, showing the inflation state and liquid level state, according to an embodiment of this application. The annular sidewall 44 is specifically a closed surface that divides the internal space of the cup body 2, forming a top-closed gas storage space 211 between the sidewall of the cup body 2 and the annular sidewall 44. When the liquid level rises above the filter screen 41, the annular sidewall 44, the sidewall of the cup body 2, and the liquid level together form an outer cavity 21 and an inner cavity 22. A pressure relief hole 43, which connects the outer cavity 21 and the inner cavity 22, is also provided above the annular sidewall 44. Preferably, the pressure relief hole 43 is located on the positioning edge 45, at the top of the gas storage space 211, allowing the high-pressure gas in the outer cavity 21 to be discharged outwards to the inner cavity 22 through the pressure relief hole 43, thereby reducing the gas pressure in the outer cavity 21.

[0056] The outlet rate v1 of the pressure relief hole 43 is less than the inlet rate v2 of the air pump 31, which allows the air pump to increase the accumulation of gas in the outer cavity 21 during operation, further increasing the gas pressure in the outer cavity 21. By pre-setting the proportional relationship between the outlet rate v1 of the pressure relief hole 43 and the inlet rate v2 of the air pump 31, the gas growth rate in the outer cavity 21 can be controlled; by utilizing the intermittent working intervals of the air pump, the rise and fall of the gas pressure in the outer cavity 21 can be effectively controlled in a cyclical manner.

[0057] Understandably, the pressure relief hole 43 can also be located on the side wall of the cup body 2, directly connected to the external air pressure, which can also make the liquid surface move back and forth.

[0058] The intermittent operation of the air pump 31 includes both working and non-working states. When the air pump 31 is working, it inflates the outer cavity 21 through the bottom of the cup, using gas pressure to drive the liquid flow. When the air pump 31 is not working, the duration of its stoppage is controlled to allow the pressure relief hole 43 to expel the high-pressure gas from the outer cavity 21, restoring the liquid levels on both sides of the tea infuser assembly 4 to a horizontal state. By controlling the intermittent operation of the air pump 31 to regulate the gas pressure changes inside the outer cavity 21, the liquid reciprocates within the space of the tea extraction assembly 4, circulating and extracting the material.

[0059] Specifically, the airflow relationship between the air outlet rate v1 of the pressure relief hole 43 and the air inlet rate v2 of the air pump 31 can be limited by presetting the orifice size of the pressure relief hole 43 and the working power of the air pump 31. Preferably, 5v1≤v2≤10v1.

[0060] By pre-setting the ratio between the cross-sectional area S1 at the liquid surface of the outer cavity 21 and the cross-sectional area S2 at the liquid surface of the inner cavity 22, the rising height of the liquid surface inside the tea strainer component 4 during the movement of the liquid can be controlled. Under the premise of ensuring that the liquid surface of the inner cavity 22 does not overflow, the cross-sectional area S2 is reasonably set to improve the tea extraction efficiency. Preferably, 0.5S2≤S1≤S2.

[0061] Furthermore, the air pump 31 can push the liquid surface to form a circulating water flow of V in each working state. The maximum value of the circulating water flow V is the amount of water V1 that enters the tea strainer assembly 4 when the gas injected by the air pump 31 presses the liquid surface down to the lower end face of the filter screen 41. That is, the value range of the circulating water flow V should be 0≤V≤V1. Among them, the maximum capacity of the tea strainer assembly 4 is V2, and the ratio coefficient between the circulating water flow V and the maximum capacity V2 of the tea strainer assembly 4 is b, 0.25≤b≤0.5. When b<0.25, the circulating water flow is relatively too small, and the impact extraction effect on the material is limited; while when b>0.5, the circulating water flow is too large, the single extraction cycle time is too long, affecting the overall extraction efficiency, and at the same time, the capacity requirement of the tea strainer assembly is high, which will further limit the processing capacity of the cup.

[0062] In one embodiment, the gas pressure in the outer cavity 21 is P1, the gas pressure in the inner cavity 22 is atmospheric pressure P0, and the liquid pressure is P2. When the air pump 31 is in operation, the gas pressure P1 in the outer cavity 21 gradually increases, making P1 > P2 + P0. At this time, the liquid level in the outer cavity 21 begins to gradually decrease under the influence of gas pressure, while the liquid level in the inner cavity 22 begins to rise rapidly. When the air pump 31 is not in operation, the high-pressure gas in the outer cavity 21 is continuously discharged outward through the pressure relief hole 43, and the pressure P1 gradually decreases, making P1 < P2 + P0. At this time, the liquid level in the outer cavity 21 begins to gradually rise again, while the liquid level in the inner cavity 22 begins to drop rapidly.

[0063] It should be noted that when the air pump 31 is in operation, it also has another processing state. After the gas fills the entire outer cavity 21, when the liquid level is pressed down to below the tea strainer assembly 4, the gas subsequently injected by the air pump 31 will be directly discharged outward from the filter screen 41 at the bottom of the tea strainer assembly 4. As the gas rises, it will cause the extraction material inside the tea strainer assembly 4 to tumble, further improving the extraction efficiency of the whole machine.

[0064] Combination Figure 1-3 Throughout the entire processing, the tea strainer assembly 4 is housed inside the cup body 2. The top of the cup body 2 is provided with a movable cup lid 5. When the cup lid 5 is assembled with the cup body 2, the bottom of the cup lid 5 abuts against the positioning edge 45 of the tea strainer assembly 4, increasing the downward pressure between the tea strainer assembly 4 and the cup mouth, and further ensuring the sealing relationship between the tea strainer assembly 4 and the cup mouth of the cup body 2.

[0065] The cup lid 5 is equipped with an exhaust channel 51 that communicates with the outside of the cup body 2, ensuring that the gas pressure inside the inner cavity 22 is equal to the external atmospheric pressure P0. This allows the gas to be quickly discharged from the cup body 2, preventing safety hazards caused by excessive pressure inside the cup. Since atmospheric pressure is relatively stable, the inner cavity 22 and the outer cavity 21 can form a stable pressure difference during the inflation process of the air pump 31, ensuring that the circulating water volume remains consistent during each extraction process and improving the precise control of the extraction process by the air pump 31.

[0066] During operation, the exhaust channel 51 can be specifically configured as the drinking spout 52 of the cup body 2 and a flip cover that can be flipped and closed on the drinking spout 52. During the whole machine extraction process, the user can open the flip cover and connect the inner cavity 22 with the outside through the drinking spout 52 to release the gas pressure of the inner cavity 22 and maintain the stability of the processing. When the extraction process is completed and the machine is stopped, the user can drink directly through the drinking spout 52 or close the flip cover for easy carrying.

[0067] Please refer to Figure 4 This is a schematic diagram of a food processing machine with an air guide section according to an embodiment of this application. The bottom of the cup body 2 is provided with an air inlet 24 that communicates with the air pump 31 and has a valve structure. The air inlet 24 is offset from the center of the cup body 2, and the projection of the annular sidewall 44 in the tea strainer assembly 4 in the vertical direction can at least partially cover the air inlet 24.

[0068] It is easy to imagine that the line connecting the air inlet 24 and the stirring blade 23 can pass through the axis of the cup body 2, or the perpendicular bisector of the line connecting the two can pass through the axis of the cup body 2.

[0069] In order to allow more gas to enter the outer cavity 21 through the air inlet 24 and increase the pressure P1 increase rate of the outer cavity 21, the tea infuser assembly 4 is also provided with an air guide. The air guide is disposed close to the annular sidewall 44 and above the air inlet 24, which can guide more gas to converge into the outer cavity 21.

[0070] In one embodiment, the air guide includes a main body 251 and an air guide pipe 252 disposed on the main body 251. The two ends of the air guide pipe 252 are respectively connected to the air inlet 24 and the outer cavity 21. The bottom of the air guide pipe 252 abuts against the air inlet 24 for sealing and positioning. The upper end of the air guide pipe 252 is provided with an opening for direct introduction into the outer cavity 21. Gas is directly guided and transported into the outer cavity 21 through the pipe of the air guide pipe 252.

[0071] It is easy to imagine that the main body 251 and / or the air duct 252 can be located on the inner side of the annular sidewall 44 or on the outer side of the annular sidewall 44.

[0072] In yet another embodiment, as Figure 1-3 As shown, the bottom of the annular sidewall 44 is tapered, forming an inclined guide surface 26 at the lower end of the annular sidewall 44. The projection of the guide surface 26 in the vertical direction can cover the air inlet 24, and the upper end of the guide surface 26 is inclined close to the sidewall of the cup body 2. When the air pump 31 is in operation, the gas is buoyed and collides with the guide surface 26 during its ascent. The inclined surface guides the gas to climb between the sidewall of the cup body 2 and the annular sidewall 44, and finally converges into the interior of the outer cavity 21.

[0073] Please refer to Figure 5-6 This is a schematic diagram of the processing state of a tea strainer assembly with a second pressure relief hole, as shown in an embodiment of this application. Because the difference between the air intake rate v2 of the air pump 31 and the air outlet rate v1 of the pressure relief hole 43 is too large, the liquid level in the inner cavity 22 falls slowly during the tea extraction process, requiring a longer interval between air pump 31 cycles, which affects the extraction efficiency. Therefore, a two-stage pressure relief structure can be added to the tea strainer assembly 4. In this case, the pressure relief hole 43 includes a first pressure relief hole 431 located at a higher position on the tea strainer assembly 4 and a second pressure relief hole 432 located below the first pressure relief hole 431.

[0074] In one embodiment, the first pressure relief hole 431 is disposed on the positioning edge 45 at the top of the annular sidewall 44, while the second pressure relief hole 432 is disposed at the waist position of the annular sidewall 44, which can exchange the gas and / or liquid in the outer cavity 21 and the inner cavity 22, and further assist the first pressure relief hole 431 in relieving pressure.

[0075] The second pressure relief hole 432 includes a first pressure relief state and a second pressure relief state. The first pressure relief state is the processing state when the second pressure relief hole 432 is higher than the liquid level in the cup; the second pressure relief state is the processing state when the second pressure relief hole 432 is lower than the liquid level in the cup.

[0076] During the extraction process, as the working state of the air pump 31 changes, the liquid level in the cup will change, which will affect the pressure relief state of the pressure relief hole 43. In the first pressure relief state, the first pressure relief hole 431 and the second pressure relief hole 432 simultaneously discharge the gas from the outer cavity 21 to the inner cavity 22. In the second pressure relief state, the liquid pressure above the position of the second pressure relief hole 432 is P3. When P1 > P3, the gas is discharged from the outer cavity 21 through the second pressure relief hole 432. When P1 ≤ P3, the liquid is guided back into the outer cavity 21 from the inner cavity 22 through the second pressure relief hole 432.

[0077] Please refer to Figure 7This is a schematic diagram of the extraction space within a tea strainer assembly according to an embodiment of this application. The bottom of the tea strainer assembly 4 is provided with a filter screen 41 structure. The filter screen 41 is horizontally mounted on the bottom of the annular sidewall 44 via a locking structure 46. Above the filter screen 41, a filter cover 42 is movably disposed within the tea strainer assembly 4. The filter cover 42 is positioned above the filter screen 41, forming an extraction space 411 for containing and filtering the extracted material. Extraction is performed by placing the material inside the extraction space 411. During the extraction process, the filter screen 41 and filter cover 42 create a certain impact pressure in the water flow, stimulating faster extraction of the material. When the process is complete, the filter cover 42 filters the extracted material, preventing it from flowing out of the drinking spout and affecting the user's drinking experience.

[0078] The filter screen 41 includes a body 412 and a retaining wall 413 extending upward along the edge of the body 412. The upper end of the retaining wall 413 is provided with a locking structure 46 that engages with the annular sidewall 44. The retaining wall 413 connects the body 412 and the filter cover 42 to form an extraction space 411. The upper surface of the filter cover 42 and the annular sidewall 44 form a buffer space 421, further buffering the flow of extracted water passing through the extraction space 411. The capacity ratio of the buffer space 421 to the extraction space 411 is 'a', preferably 1.5 ≤ a ≤ 2.5. When a < 1.5, the buffer space is relatively too small relative to the extraction space, which not only affects the extraction efficiency of the extraction space but also poses a certain risk of overflow. When a > 2.5, the overall buffer space is relatively too large, resulting in wasted cup space and power loss of the aeration component.

[0079] In one embodiment, the filter cover 42 and the annular sidewall 44 are integrally formed. The filter screen 41 is detachably and movably disposed at the bottom of the annular sidewall 44. The locking structure 46 includes an internal thread on the inner sidewall of the enclosure 413 and an external thread on the annular sidewall 44. The filter screen 41 and the filter cover 42 are positioned and installed by the internal and external threads, so that the filter screen 41 and the filter cover 42 enclose and form an extraction space 411. In the vertical direction, both the filter screen 41 and the filter cover 42 are provided with through filter holes, and the number of holes on the filter screen 41 and the filter cover 42 is greater than that on the top. This allows a certain impact pressure to be formed between the filter cover 42 and the water flow during the process of the liquid rising. While the water flow passes through, the material to be extracted can be filtered, thereby improving the overall extraction efficiency.

[0080] The filter holes on the filter screen 41 are located on the body 412, and the ratio of the total area of ​​the filter holes to the body 412 is m. The ratio of the total area of ​​the filter holes on the filter cover 42 to the whole body is n. Preferably, 0.05 ≤ m < n ≤ 0.1. When the ratio of the filter hole area is < 0.05, the water flow rate will be limited, the external liquid pressure will be too high, and the requirements for the quality of the cup and the processing efficiency of the aeration components will be higher, increasing the cost. When the ratio of the filter hole area is > 0.1, the water flow rate is relatively too loose, and the extraction effect on the material in the extraction space is limited.

[0081] Please refer to the following: Figure 8 This is a top view of the mounting structure of a food processing machine base according to an embodiment of this application. The air pump 31 is offset from the center of the cup body, leaving more space on the base to place the drive motor 32. Since the air pump 31 and the drive motor 32 are relatively large in size and weight, this arrangement makes the overall center of gravity of the base 1 closer to the axis, and the overall space inside the base 1 is more compact, effectively improving the space utilization inside the base 1.

[0082] The base 1 is also provided with a fixing bracket 33 for fixing the air pump 31 and the drive motor 32. The fixing bracket fixes the relative positions of the processing parts, reduces the interference between them during the processing, and improves the stability of the whole machine processing process.

[0083] In one embodiment, a fixed bracket 33 is provided inside the base 1. The fixed bracket 33 is provided with a plurality of mounting slots. The drive motor 32 and the air pump 31 are respectively positioned on the fixed bracket 33 through the mounting slots. The fixed bracket 33 is further fixedly installed at the bottom of the cup body 2, so that the air pump 31 inflation position and the output shaft of the drive motor 32 are respectively connected to the air inlet 24 and the stirring blade 23.

[0084] Please refer to the following: Figure 9 and Figure 10 This is a schematic diagram of the food processing machine in extraction mode and juicing mode according to an embodiment of this application. The base 1 also includes a control board 34 connected to and controlled by the air pump 31 and the drive motor 32. The control board 34 is mounted on the side wall of the base 1 by a fixed bracket 33. A control trigger button switch 35 is correspondingly provided on the outer side of the base 1. The button switch 35 is connected to the control board 34 and identifies different control programs.

[0085] During operation, the button switch 35 includes a function button 351 and a child lock button 352 that controls the triggering of the function button. The user must first control and trigger the child lock button 352 before the corresponding function button 351 can be identified to trigger the corresponding tea extraction or juice extraction program.

[0086] Combined Figure 7The side wall of the food processor is also provided with a wiring channel 341, through which the control board 34 can be connected to the cup lid 5 and the tea strainer assembly 4.

[0087] In one embodiment, a safety switch can be installed on the top of the food processing machine. Specifically, a magnet can be installed on the positioning edge 45 of the tea infuser assembly 4 or on the cup lid 5, and a Hall plate can be installed at the cup mouth wiring channel of the cup body 2 to determine whether the tea infuser assembly 4 is sealed and installed in place by recognizing the magnetic signal.

[0088] Combination Figure 10 As shown, the cup body 2 is also equipped with a filter screen 54 that can replace the tea strainer component at the cup mouth. It can filter the juice in the juicing mode, improve the purity of the juice, and facilitate the further combination with the extraction function to make fruit tea, realize the processing of multiple flavors, and improve the drinking experience for users.

[0089] In one embodiment, when the juice is poured in the juicing mode, the filter screen 54 filters the juice residue through the mesh. The air pump 31 inflates the cup body 2 to form a certain gas pressure, which squeezes the juice residue adhering to the mesh, so that the juice flows out fully. This can help improve the juice output efficiency in the juicing mode.

[0090] During operation, users can implement various processing modes according to different processing needs. When performing the extraction function, the tea strainer component 4 can be installed to trigger the corresponding extraction function. The air pump 31 works intermittently to drive the water flow for extraction, while the stirring blade 23 stirs at low speed, making the extracted material tumble and increasing the probability of impact with the water flow, thus assisting the extraction process. When performing the juicing function, the tea strainer component 4 can be removed and replaced with a filter screen 54. Fruits and vegetables can be directly put in to trigger the juicing function, causing the stirring blade 23 to rotate at high speed to achieve juicing. Furthermore, users can mix two products in a certain proportion, or perform an extraction step on the juice after the juicing function is completed, thereby realizing the portable production of fruit tea and improving the user's taste.

[0091] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A food processing machine with tea extraction function, comprising a base and a cup body mounted on the base, wherein the base is provided with an air inflation component and a stirring component, and a tea strainer component with a bottom filter screen is movably disposed at the mouth of the cup body, characterized in that, The tea infuser assembly is pressed against the rim of the cup. The sidewalls of the tea infuser assembly, the cup body, and the liquid surface together form an inner cavity and an outer cavity. The inner cavity is located inside the tea infuser assembly, and the outer cavity is located between the sidewalls of the tea infuser assembly and the cup body. The inflation assembly includes an air pump positioned opposite the outer cavity. By controlling the air pump, gas is injected into the outer cavity to increase pressure, pushing the liquid in the outer cavity through the filter screen into the inner cavity. The tea infuser assembly has a pressure relief hole connecting the inner and outer cavities. When the air pump operates, gas begins to accumulate in the outer cavity, and the liquid level in the outer cavity begins to drop under gas pressure, while the liquid level in the inner cavity rises accordingly. When the air pump stops operating, the high-pressure gas in the outer cavity is discharged through the pressure relief hole, the liquid level in the outer cavity begins to rise again, and the liquid level in the inner cavity falls accordingly.

2. The food processing machine with tea extraction function according to claim 1, characterized in that, The pressure relief hole is positioned axially higher than the filter screen, and the air outlet rate of the pressure relief hole is less than the air inlet rate of the air pump.

3. A food processing machine with tea extraction function according to claim 1, characterized in that, The top of the cup also includes a movable lid, which closes on the cup and presses down on the tea strainer assembly.

4. A food processing machine with tea extraction function according to claim 3, characterized in that, The cup lid is provided with an exhaust channel that communicates with the outside. The exhaust channel includes a drinking spout and a flip cover that closes to the drinking spout. When the flip cover is opened, the inner cavity communicates with the outside through the drinking spout to balance the air pressure inside the cup.

5. A food processing machine with tea extraction function according to claim 1, characterized in that, The bottom of the cup body is provided with an air inlet that communicates with the air pump. The air inlet is offset from the center of the cup body, and the projection of the side wall of the tea strainer assembly in the vertical direction at least partially covers the air inlet.

6. A food processing machine with tea extraction function according to claim 5, characterized in that, The tea strainer assembly has an air guide section on its side wall. The air guide section includes a body and an air guide pipe disposed on the body. The two ends of the air guide pipe are respectively connected to the air inlet and the outer cavity, guiding the air inlet to fill the outer cavity with gas.

7. A food processing machine with tea extraction function according to claim 5, characterized in that, The sidewall of the tea strainer assembly tapers at the bottom to form an inclined guide surface. The upper end of the guide surface is inclined close to the sidewall of the cup body, guiding the gas filled through the air inlet to rise along the sidewall of the cup body.

8. A food processing machine with tea extraction function according to claim 1, characterized in that, The filter screen is horizontally positioned at the lower end of the side wall of the tea strainer assembly, and a filter cover with perforations is movably disposed above the filter screen, forming an extraction space for containing the extracted material between the filter screen and the filter cover.

9. A food processing machine with tea extraction function according to claim 1, characterized in that, The stirring assembly includes a drive motor installed in the base and a stirring blade extending into the cup body and connected to the drive motor for transmission. The drive motor is offset from the center of the cup body and is positioned opposite to the air pump.

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