An extraction device

Abstract

The utility model relates to beverage extraction device technical field, concretely is an extraction device, including outer shell, with the detachable connection of inner shell of outer shell, the outer shell is equipped with outer shell opening, outer shell cavity, the inner shell includes the upper casing of connecting in the upper side of outer shell, the brewing material filter, the first accommodating cavity of connecting in the upper side of upper casing, upper casing is equipped with the conveying channel of intercommunication brewing material filter and first accommodating cavity, one end and outer shell cavity or first accommodating cavity intercommunication's air pump assembly, mounting cavity, first accommodating cavity is located the upper side of conveying channel, and air pump assembly is used for adjusting the pressure of outer shell cavity or first accommodating cavity, so that liquid lift flow, the utility model discloses through air pump assembly to the air pressure in the adjustment of outer shell cavity or first accommodating cavity, so that liquid can realize controllable lift flow under the action of pressure difference, and user can directly put liquid or ice block and other materials into first accommodating cavity in the device operation process, does not need to stop or dismounts the inner shell, improves use efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of beverage extraction devices, specifically an extraction device. Background Technology

[0002] Currently, common extraction devices typically involve placing the ingredients (such as tea leaves, tea bags, coffee powder, or coffee bags) into a pot or cup, pouring in hot water, and letting it sit for a period of time to allow it to gradually unfurl and release its concentrate, eventually forming a beverage which is then poured out for consumption. Some people also use cold or ice water for cold brew extraction. However, in a static water environment, due to the lack of water flow, the concentrate released by the ingredients cannot easily spread evenly within the pot or cup in a short time. Furthermore, the limited space for the accumulated ingredients to unfurl prevents the full release of their active components, resulting in low utilization of the raw materials and waste. In addition, this type of cold brew method usually requires more than 12 hours to complete the extraction, which is excessively time-consuming.

[0003] To address these issues, beverage extraction pitchers have been gradually developed and applied. For example, Chinese patent document CN215533673U discloses a beverage extraction pitcher, but it still has some shortcomings in its use: users must stop the machine and remove the lid before adding liquid; if ice or other materials need to be added to the inner container, the machine must be stopped, the lid removed, the brewing filter and inner container disassembled, ice or other materials added, the brewing filter and inner container reassembled, and finally the inner container reinstalled with the lid. This cumbersome process increases processing time, undoubtedly affecting ease of use and thus reducing the user experience.

[0004] Therefore, it is necessary to optimize the existing beverage extraction pots to further simplify the operation and improve the user experience. Utility Model Content

[0005] To address the aforementioned technical problems of existing beverage extraction pots, such as the cumbersome and time-consuming operation of adding liquids and ice cubes, the technical solution adopted by this utility model is as follows: An extraction device includes an outer liner and an inner liner detachably connected to the outer liner. The outer liner has an outer liner opening and an outer liner cavity communicating with the outer liner opening. The inner liner includes an upper shell connected to the upper side of the outer liner, a brewing filter connected to the upper shell and communicating with the outer liner cavity, and a first receiving cavity connected to the upper side of the upper shell. The upper shell has a delivery channel communicating with the brewing filter and the first receiving cavity, an air pump assembly with one end communicating with the outer liner cavity or the first receiving cavity, and a mounting cavity for accommodating the air pump assembly. The first receiving cavity is located above the delivery channel. The air pump assembly is used to adjust the pressure of the outer liner cavity or the first receiving cavity to cause liquid to rise and fall and flow.

[0006] Furthermore, in some embodiments of this utility model, the outer liner is provided with a supporting end, the upper shell is provided with an abutting end that cooperates with the supporting end and a sealing end located below the abutting end and in contact with the inner wall of the outer liner, the outer liner is provided with a spout located above the sealing end and communicating with the outer liner cavity, the maximum outer diameter of the first accommodating cavity is greater than the outer diameter of the conveying channel, and the first accommodating cavity is located above the opening of the outer liner.

[0007] Furthermore, in some embodiments of this utility model, the upper housing is provided with a first through hole that communicates with the mounting cavity and the outer liner cavity respectively, and the air pump assembly includes a first air pump, one end of the first air pump communicating with the first through hole, and the other end of the first air pump communicating with the first accommodating cavity or the outside.

[0008] Furthermore, in some embodiments of this utility model, the upper housing is provided with a second through hole that communicates with the mounting cavity and the first accommodating cavity respectively, and the air pump assembly includes a second air pump, one end of the second air pump communicating with the second through hole, and the other end of the second air pump communicating with the outer bladder cavity or the outside.

[0009] Furthermore, in some embodiments of this utility model, the upper housing is provided with a liquid level sensor located inside the outer liner cavity, the first through hole is located on the lower side of the sealing end abutting against the inner wall of the outer liner, and the liquid level sensor is located between the first through hole and the lowest side of the upper housing.

[0010] Furthermore, in some embodiments of this utility model, the upper shell is provided with a connecting shell, the first accommodating cavity is located in the connecting shell, the upper shell is provided with a first connecting end and a second connecting end, the brewing filter is provided with a first mating end that mates with the first connecting end, the connecting shell is provided with a second mating end that mates with the second connecting end, and the upper side of the connecting shell is provided with a detachable cover, the cover being provided with a cover opening.

[0011] Furthermore, in some embodiments of this utility model, the bottom of the connecting housing is provided with a connecting housing opening communicating with the conveying channel, the upper side of the upper housing is provided with an upper housing positioning end that cooperates and is fixed with the connecting housing opening, the conveying channel passes through the upper housing, and the mounting cavity is provided with a limiting part for accommodating the air pump assembly.

[0012] Furthermore, in some embodiments of this utility model, the upper housing encloses and forms an installation cavity, including a first upper housing and a second upper housing. The upper housing positioning end is disposed in the first upper housing, and the conveying channel and the mounting component are respectively disposed in the second upper housing. The first upper housing is provided with a first upper housing connecting part and a first upper housing engaging part connected to the upper housing positioning end. The second upper housing is provided with a second upper housing connecting part that cooperates with the first upper housing connecting part and a second upper housing abutting part located in the conveying channel and cooperating with the first upper housing engaging part.

[0013] Furthermore, in some embodiments of this utility model, the first upper housing is provided with a first upper housing opening that communicates with the mounting cavity and the outside, the second connecting end is provided in the second upper housing, and a gap communicating with the outside is provided between the second connecting end and the second mating end.

[0014] Furthermore, in some embodiments of this utility model, the brewing material filter is provided with a brewing material placement shell connected to the second upper shell, a lower shell filter screen detachably connected to the lower side of the brewing material placement shell, the sealing end is located on the outside of the second upper shell, the maximum outer diameter of the brewing material filter is smaller than the maximum outer diameter of the second upper shell, and the outer diameter of the outer chamber increases from top to bottom.

[0015] The beneficial effects of this utility model are as follows: This invention uses an air pump assembly to adjust the air pressure in the outer chamber or the first accommodating chamber, allowing the liquid to flow in a controlled manner under the action of pressure difference. By setting the first accommodating chamber on the upper side of the conveying channel, the user can directly put liquids or ice cubes into the first accommodating chamber during the operation of the device without stopping the machine or disassembling the inner chamber, thus simplifying the operation process and improving the efficiency of use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the extraction device of this utility model.

[0017] Figure 2 for Figure 1 AA sectional view.

[0018] Figure 3 for Figure 2 Enlarged view of part B.

[0019] Figure 4 This is an exploded view of the extraction device of this utility model.

[0020] Figure 5 This is an exploded view of the upper shell of this utility model.

[0021] Figure 6 This is an exploded view of the upper shell of this utility model from another perspective.

[0022] Figure 7 for Figure 5 CC section view. Detailed Implementation

[0023] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings. The described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0024] It should be noted that all directional indications in this utility model embodiment, such as (up, down, left, right, front, back, etc.), are only used to explain the relative positional relationship and movement of each component in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indication will also change accordingly.

[0025] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0026] like Figures 1 to 7 An extraction device is shown, comprising an outer liner 1 and an inner liner 2 detachably connected to the outer liner 1. The outer liner 1 has an outer liner opening 11 and an outer liner cavity 12 communicating with the outer liner opening 11. The inner liner 2 includes an upper shell 3 connected to the upper side of the outer liner 1, a brewing filter 4 connected to the upper shell 3 and communicating with the outer liner cavity 12, and a first receiving cavity 5 connected to the upper side of the upper shell 3. The upper shell 3 has a conveying channel 31 communicating with the brewing filter 4 and the first receiving cavity 5, an air pump assembly 32 with one end communicating with the outer liner cavity 12 or the first receiving cavity 5, and a mounting cavity 33 accommodating the air pump assembly 32. The first receiving cavity 5 is located above the conveying channel 31. The air pump assembly 32 is used to adjust the pressure of the outer liner cavity 12 or the first receiving cavity 5 to cause the liquid to rise and fall and flow.

[0027] This invention uses an air pump assembly to adjust the air pressure in the outer chamber or the first accommodating chamber, allowing the liquid to flow in a controlled manner under the action of pressure difference. By setting the first accommodating chamber on the upper side of the conveying channel, the user can directly put liquids or ice cubes into the first accommodating chamber during the operation of the device without stopping the machine or disassembling the inner chamber, thus simplifying the operation process and improving the efficiency of use.

[0028] Optionally, in some embodiments, compared to the prior art which requires lifting the lid to add liquid, the present invention can directly add liquid into the first accommodating cavity, and achieve uniform mixing of liquid under the action of the air pump assembly.

[0029] Optionally, in some embodiments, compared to the prior art where liquid enters the inner liner from the outer liner through the brewing material filter under pressure, this invention, by setting a conveying channel, allows the liquid in the outer liner cavity to enter the first receiving cavity from bottom to top under pressure and fully contact the ice. Then, through changes in pressure or gravity, the liquid re-enters the outer liner cavity from top to bottom through the conveying channel. By setting a longer travel distance, the uniformity of liquid movement and mixing and the efficiency of extraction can be improved.

[0030] Compared to existing technologies that require stopping the machine and repeatedly disassembling and reassembling components such as the lid, inner liner, and brewing material filter before adding materials, this solution simplifies the operation process, reduces user steps and time costs, and allows users to add cold water or ice at any time during the extraction process to cool down, or add hot water to adjust the concentration and temperature for rapid cold extraction, meeting the needs of users in different usage scenarios.

[0031] Furthermore, traditional devices often require repeated disassembly and reassembly of components such as the lid, inner liner, and brewing material filter when adding materials. This is not only cumbersome but also poses potential problems such as poor sealing, liquid leakage, and component wear. This invention, through a non-disassembly, pneumatically driven liquid adding and circulation method, effectively reduces the frequency of direct contact between the user and key components of the device, lowers the probability of operational errors and equipment wear risks, and improves the safety and durability of the product.

[0032] Specifically, by incorporating an air pump assembly, this invention can actively adjust the air pressure within the outer chamber or the first accommodating chamber, thereby controlling the rise and fall of the liquid between the chambers. This design not only allows users to add liquid or ice without disassembling the structure, but also utilizes pressure differences to drive liquid circulation, improving the contact efficiency between the substance to be brewed and the liquid, and enhancing extraction uniformity and efficiency. Optionally, in some embodiments, the air pump assembly can be a single air pump, or it can be dual air pumps or even multiple air pumps operating.

[0033] Optionally, in some embodiments, when the first accommodating cavity is connected to the outside and the outer liner cavity is sealed, the air pump assembly applies pressure to the outer liner cavity to cause the liquid to move into the first accommodating cavity. When the air pump assembly stops running, the liquid moves towards the outer liner cavity under the action of gravity.

[0034] Optionally, in some embodiments, when the first accommodating cavity is connected to the outside and the outer liner cavity is sealed, the air pump assembly applies pressure to the outer liner cavity to cause the liquid to move into the first accommodating cavity. When the air pump assembly draws air into the outer liner cavity, the liquid moves from the first accommodating cavity to the outer liner cavity under the suction action.

[0035] Optionally, in some embodiments, when the first accommodating cavity is sealed and the outer liner cavity is connected to the outside, the air pump assembly draws liquid into the first accommodating cavity, causing the liquid to move into the first accommodating cavity. When the air pump assembly applies pressure to the first accommodating cavity, the liquid moves from the first accommodating cavity towards the outer liner cavity under pressure.

[0036] Optionally, in some embodiments, when the first accommodating cavity is sealed and the outer liner cavity is connected to the outside, the air pump assembly causes the liquid to move from the outer liner cavity to the first accommodating cavity by drawing into the first accommodating cavity. When the air pump assembly stops operating, the liquid moves from the first accommodating cavity to the outer liner cavity under the action of gravity.

[0037] like Figures 2 to 4 An extraction device is shown, wherein the outer liner 1 is provided with a supporting end 13, the upper shell 3 is provided with an abutting end 14 that cooperates with the supporting end 13 and a sealing end 15 located below the abutting end 14 and in contact with the inner wall of the outer liner 1, the outer liner 1 is provided with a spout 16 located above the sealing end 15 and communicating with the outer liner cavity 12, the maximum outer diameter of the first receiving cavity 5 is greater than the outer diameter of the conveying channel 31, and the first receiving cavity 5 is located above the opening 11 of the outer liner.

[0038] Furthermore, as a preferred embodiment of this utility model and not a limitation, the outer liner is provided with a supporting end, and the upper shell is provided with a corresponding abutting end. During assembly, the two can be positioned and stably connected by snap-fit, plug-in, or limiting structure, thereby fixing the relative position between the inner liner and the outer liner, preventing the inner liner from shifting or shaking in the outer liner cavity, thereby improving the stability of the overall structure and the reliability of assembly.

[0039] In addition, the upper shell has a sealing end on the lower side of the contact end. The sealing end fits tightly with the inner wall of the outer liner, thereby forming a sealing structure between the outer liner and the inner liner. This can effectively prevent the liquid in the outer liner cavity from leaking or overflowing during the extraction process. By maintaining a good sealing state, the effect of the air pump assembly in regulating the pressure of the outer liner cavity is improved.

[0040] Furthermore, the outer liner is equipped with a spout located on the upper side of the sealing end and communicating with the outer liner cavity. The spout is positioned in the upper area of ​​the outer liner cavity and is spaced apart from the sealing end, thereby ensuring that after the liquid is extracted, the upper shell can be lifted upwards and the liquid can be smoothly poured out through the spout.

[0041] Optionally, in some embodiments, the sealing end may be made of silicone. The outer diameter of the sealing end is such that, after the inner liner extends into the outer liner cavity, it abuts against the inner wall of the outer liner cavity through an interference fit.

[0042] Specifically, the maximum outer diameter of the first receiving cavity is larger than the outer diameter of the conveying channel, allowing the first receiving cavity to not only serve as a temporary holding space for liquids or materials, but also to form an effective communication structure with the brewing filter and the outer chamber through the conveying channel, thereby achieving directional conveying and pressure transmission of liquids or materials. Optionally, in some embodiments, users do not need to worry about ice cubes getting stuck in the conveying channel; they can add larger ice cubes, or immediately replenish an appropriate volume of liquid after pouring out the extract, thus maintaining good extraction operability.

[0043] Specifically, the first accommodating cavity is located above the opening of the outer liner, maintaining a certain spatial distance from the outer liner cavity. This avoids interference with the outer liner cavity and provides an independent temporary accommodating space for adding liquids or ice.

[0044] In existing technology, the kettle lid rests against the outer liner, but the lid, inner liner, and brewing filter all extend into the outer liner cavity. This results in a large overall height occupied by the lid, requiring the outer liner to be made to accommodate the lid's height. However, when adding liquid to the outer liner cavity, it is generally not advisable to exceed the water level control device. This means that even with an increased outer liner height, the overall volume is limited by the position of the water level control device, reducing the effective utilization rate of the outer liner cavity.

[0045] The first accommodating cavity of this invention is located on the upper side of the outer liner opening. With the same size upper shell and brewing material filter, since the first accommodating cavity does not extend into the outer liner cavity, only the upper shell and brewing material filter extend into the outer liner cavity. This reduces the height space occupied by the outer liner, further reducing the manufacturing cost of the outer liner and further reducing the height space occupied by the overall extraction device.

[0046] like Figures 2 to 4 An extraction device is shown, wherein the upper housing 3 is provided with a first through hole 34 that communicates with the mounting cavity 33 and the outer bladder cavity 12 respectively, and the air pump assembly 32 includes a first air pump 321, one end of the first air pump 321 is connected to the first through hole 34, and the other end of the first air pump 321 is connected to the first accommodating cavity 5 or the outside.

[0047] Furthermore, as a preferred embodiment of the present invention and not a limitation thereof, the upper shell is provided with a first through hole that connects the mounting cavity to the outer liner cavity. At the same time, the first air pump forms an airflow exchange path with the outer liner cavity or the first accommodating cavity through the first through hole, so that the first air pump can quickly change the air pressure state in the outer liner cavity or the first accommodating cavity by pumping or supplying air when it is working, thereby generating a pressure difference in the liquid and driving the liquid to rise, fall or circulate.

[0048] Specifically, since the outer chamber, the brewing material filter, the conveying channel, and the first accommodating cavity are connected, and the air pressure is actively regulated by the first air pump, this utility model can use the pressure difference to drive the liquid to form a directional flow or a circulating flow between the outer chamber, the brewing material filter, the conveying channel, and the first accommodating cavity, thereby improving the contact efficiency between the brewing material and the liquid, accelerating the dissolution of effective components, and improving the extraction uniformity and overall extraction efficiency.

[0049] When the first air pump is connected to the first accommodating cavity, the liquid in the first accommodating cavity or the liquid in contact with the ice can be introduced into the outer liner cavity through the conveying channel by adjusting the air pressure in the first accommodating cavity, or the liquid can be made to flow back under pressure, so as to realize liquid addition and circulation control.

[0050] When the first air pump is connected to the outside, it can directly regulate the air pressure inside the outer chamber, promote the natural flow or circulation of liquid between the outer chamber and the brewing material filter, and improve extraction efficiency and uniformity.

[0051] like Figures 2 to 7 An extraction device is shown, wherein the upper housing 3 is provided with a second through hole that communicates with the mounting cavity 33 and the first accommodating cavity 5 respectively, and the air pump assembly 32 includes a second air pump 322, one end of the second air pump 322 is connected to the second through hole, and the other end of the second air pump 322 is connected to the outer bladder cavity 12 or the outside.

[0052] Furthermore, as a preferred embodiment of this utility model and not a limitation, the upper shell is provided with a second through hole that connects the mounting cavity to the first accommodating cavity. At the same time, the other end of the second air pump can be selectively connected to the outer liner cavity or the outside according to functional requirements, thereby forming an airflow control channel that is independent or complementary to the airflow path of the first air pump. This allows the second air pump to independently adjust the air pressure state inside the first accommodating cavity or the outer liner cavity. By pumping or supplying air, the pressure difference between the first accommodating cavity and the outer liner cavity is changed, thereby driving the liquid to generate directional or circulatory flow between the first accommodating cavity, the delivery channel, the brewing material filter, and the outer liner cavity.

[0053] Specifically, since the outer chamber, the brewing material filter, the delivery channel, and the first accommodating cavity are connected, the present invention can achieve active delivery and circulation of liquid between the outer chamber, the brewing material filter, the delivery channel, and the first accommodating cavity by adjusting the air pressure of the first accommodating cavity or the outer chamber through the second air pump. For example, the liquid in the first accommodating cavity and the mixture in contact with ice cubes can be introduced into the outer chamber under pressure, or the liquid in the outer chamber can be caused to flow back to the first accommodating cavity, thereby promoting full contact and mixing between the liquid and the brewing material.

[0054] Optionally, in some embodiments, the second air pump connects to the outside world to adjust the air pressure in the outer chamber or the first accommodating chamber, which can assist in liquid movement, balance internal and external pressures, or stabilize the extraction environment.

[0055] Optionally, in some embodiments, the second through-hole is positioned above the bottom of the first receiving cavity.

[0056] Furthermore, the second air pump can work together with the first air pump or be controlled separately to achieve independent or joint regulation of the air pressure in the outer chamber and the first receiving chamber, thereby supporting flexible switching of multiple functional modes. Through the synergy of the first and second air pumps, the directional addition and circulation of liquid from the first receiving chamber to the outer chamber are achieved.

[0057] like Figures 2 to 4 An extraction device is shown, wherein the upper housing 3 is provided with a liquid level sensor 8 located in the outer chamber 12, the first through hole 34 is located on the lower side of the sealing end 15 abutting against the inner wall of the outer chamber 1, and the liquid level sensor 8 is located between the first through hole 34 and the lowermost side of the upper housing 3.

[0058] Furthermore, as a preferred embodiment of this utility model and not a limitation, a liquid level sensor mounted on the upper shell is located within the outer chamber. This sensor can detect the real-time liquid level in the outer chamber, thereby accurately determining the current liquid level within the chamber, such as whether it has reached the preset minimum or maximum liquid level. The liquid level monitoring function helps users or the control system to monitor the remaining liquid level, preventing extraction interruptions, excessive exposure of the brewed material, or ineffective extraction due to insufficient liquid. It also prevents safety hazards such as overflow and leakage caused by overfilling, thus improving the controllability and safety of the extraction process.

[0059] In addition, by setting the first through hole on the lower side of the sealing end, an effective airflow or liquid communication channel is formed between the first through hole and the outer liner cavity. At the same time, the liquid level sensor is arranged between the first through hole and the lowest side of the upper shell, ensuring that the liquid level sensor is located in the main active area that the liquid in the outer liner cavity may reach. This allows the liquid level sensor to sense the actual liquid level more sensitively and accurately, avoiding blind spots or misjudgments caused by the position being too high or too low, thereby improving the reliability and practicality of liquid level detection.

[0060] Specifically, the liquid level signal collected by the liquid level sensor can be connected to the control circuit board of the device to realize intelligent judgment and automatic control based on the liquid level status. When the liquid level is lower than the set value, the user is prompted to add liquid or pause the extraction. When the liquid level reaches the safe range, the air pump assembly or circulation system is automatically started to carry out liquid delivery and extraction operations.

[0061] like Figures 2 to 7 An extraction device is shown, wherein the upper housing 3 is provided with a connecting housing 6 on its upper side, the first accommodating cavity 5 is located in the connecting housing 6, the upper housing 3 is provided with a first connecting end 36 and a second connecting end 37, the brewing material filter 4 is provided with a first mating end 46 that mates with the first connecting end 36, the connecting housing 6 is provided with a second mating end 67 that mates with the second connecting end 37, and the upper side of the connecting housing 6 is provided with a detachable cover 7, the cover 7 being provided with a cover opening 71.

[0062] Furthermore, as a preferred embodiment of this utility model and not a limitation thereof, the upper housing is provided with a first connecting end and a second connecting end, which form a mating connection with the first mating end of the brewing filter and the second mating end of the connecting housing. This enables the brewing filter, the upper housing, and the connecting housing to achieve quick and precise assembly and docking, ensuring that the relative positions of each functional component are fixed and the connection is reliable. By simplifying the assembly process of the device, the assembly difficulty can be reduced, while enhancing the stability of the overall structure.

[0063] Optionally, in some embodiments, the first connecting end and the first mating end can be fixed by means of threaded connection, snap-fit ​​connection, or magnetic connection.

[0064] Optionally, in some embodiments, the second connecting end and the second mating end can be fixed by means of threaded connection, snap-fit ​​connection, or magnetic connection.

[0065] Specifically, the first accommodating cavity is located within the connecting housing, forming a structural layout with the upper housing and the brewing material filter that is functionally independent yet mutually supportive. This spatially divides different functional modules such as liquid addition, material storage, airflow control, and brewing material filtration, helping to reduce interference between functional components, optimize liquid flow paths and gas delivery channels, and improve extraction efficiency and operational smoothness. Compared to existing technologies, the layout of this invention makes the internal structure of the device more compact, facilitating miniaturization and lightweight design.

[0066] Additionally, a removable cover is provided on the upper side of the connecting housing. This cover not only effectively covers and protects the first accommodating cavity, preventing external impurities from entering or liquid from splashing out, but also allows users to quickly open the cover during use or cleaning / maintenance to clean the inside of the first accommodating cavity or the area around the cover opening, preventing residue accumulation or blockage and improving the hygiene and lifespan of the device. The cover opening allows for gas exchange between the first accommodating cavity and the external environment, helping to achieve necessary ventilation, pressure relief, or auxiliary flow functions while ensuring structural airtightness. Of course, a one-way gas valve can also be installed on the cover, or a plug can be installed on the cover opening when not in use.

[0067] like Figures 2 to 7 An extraction device is shown, wherein the bottom of the connecting housing 6 is provided with a connecting housing opening 61 that communicates with the conveying channel 31, the upper side of the upper housing 3 is provided with an upper housing positioning end 38 that is fixed in conjunction with the connecting housing opening 61, the conveying channel 31 passes through the upper housing 3, and the mounting cavity 33 is provided with a limiting part 331 for accommodating the air pump assembly 32.

[0068] Furthermore, as a preferred embodiment of this utility model and not a limitation, the connecting shell opening at the bottom of the connecting shell is connected to the conveying channel, so that the liquid or gas in the first accommodating cavity can be smoothly conveyed to the outer liner cavity or the brewing material filter through the connecting shell opening and the conveying channel, realizing functions such as liquid addition, circulation or pressure transmission, which helps to reduce flow resistance and energy loss, ensure the high efficiency and stability of liquid or gas flow, thereby improving extraction efficiency and operational reliability.

[0069] In addition, the upper housing positioning end provided on the upper side of the upper housing is fixed in conjunction with the opening of the connecting housing, so that the connecting housing and the upper housing can be docked and firmly connected, ensuring that the two are quickly positioned and accurately aligned during the assembly process, preventing problems such as liquid leakage, gas passage blockage or component loosening caused by assembly misalignment or loose connection. Specifically, a sealing rubber ring is connected between the upper housing positioning end and the opening of the connecting housing.

[0070] Specifically, the conveying channel runs vertically through the upper shell, allowing liquid or airflow to form a continuous conveying path inside the device, which is beneficial for achieving efficient connection and circulation between the first accommodating cavity, the outer liner cavity, and the brewing material filter.

[0071] Furthermore, the limiting part set in the installation cavity is used to effectively position and limit the air pump assembly, so that the air pump assembly is accurately and securely installed in the installation cavity, preventing the air pump from affecting its normal function due to vibration, movement or displacement during operation.

[0072] Optionally, in some embodiments, the limiting part can be a limiting groove or a limiting buckle.

[0073] Optionally, in some embodiments, the height of the second through hole is higher than the height of the opening in the connecting housing.

[0074] like Figures 2 to 7 An extraction device is shown, wherein the upper housing 3 includes a first upper housing 9 and a second upper housing 10 that surround and form the mounting cavity 33. The upper housing positioning end 38 is disposed on the first upper housing 9, and the conveying channel 31 and the air pump assembly 32 are respectively disposed on the second upper housing 10. The first upper housing 9 is provided with a first upper housing connecting part 91 and a first upper housing engaging part 92 connected to the upper housing positioning end 38. The second upper housing 10 is provided with a second upper housing connecting part 101 that is connected to the first upper housing connecting part 91 and a second upper housing abutting part 102 located in the conveying channel 31 and engaging with the first upper housing engaging part 92.

[0075] Furthermore, as a preferred embodiment of this utility model and not a limitation, the first upper shell and the second upper shell together form an installation cavity. The first upper shell and the second upper shell are connected by a connecting part of the first upper shell and a connecting part of the second upper shell, and a stable engagement is formed by a locking part of the first upper shell and abutting part of the second upper shell. This allows the first upper shell and the second upper shell to achieve quick and accurate alignment and connection during production assembly or user disassembly and assembly. After assembly, the first upper shell and the second upper shell can maintain a tight fit and fixed relative position, preventing the upper shell from loosening, misaligning or deforming due to vibration, movement or external force.

[0076] Specifically, the cooperation between the first upper shell and the second upper shell makes the functional coordination between the positioning end of the upper shell and the opening of the connecting shell, between the conveying channel and the opening of the connecting shell, and between the mounting cavity and the air pump assembly more closely and smoothly. This helps to ensure the effectiveness of liquid delivery, airflow control and air pump assembly installation, and improves the stability and efficiency of the extraction device in liquid circulation, pressure control and overall operation.

[0077] Optionally, in some implementations, the first upper housing connecting part and the second upper housing connecting part can be connected by means of groove and post, fastener, or snap-fit ​​connection.

[0078] Optionally, in some implementations, the first upper housing engaging portion and the second upper housing abutting portion can be engaged by means of groove-post connection or snap-fit ​​connection.

[0079] like Figures 2 to 7 An extraction device is shown, wherein the first upper housing 9 is provided with a first upper housing opening 93 that communicates with the mounting cavity 33 and the outside, the second connecting end 37 is provided in the second upper housing 10, and a gap 94 communicating with the outside is provided between the second connecting end 37 and the second mating end 67.

[0080] Furthermore, as a preferred embodiment of this utility model and not a limitation thereof, the opening of the second upper shell and the gap between the second mating end and the first mating end together form one or more channels communicating with the outside world. This allows the mounting cavity to maintain a moderate air pressure balance with the outside world during air pressure regulation, preventing structural deformation, sealing failure, or liquid backflow caused by rapid changes in air pressure or local high pressure. This helps to improve the operational safety and control accuracy of the device in air pressure driven mode, and ensures the stability and reliability of liquid flow, circulation, or addition processes.

[0081] Specifically, the gap between the second upper housing opening and the second mating end and the first mating end ensures the necessary communication between the mounting cavity and the outside world, while also forming a good structural fit with the internal structure of the upper housing. This avoids affecting the normal function or sealing performance of other components due to improper opening or gap settings, optimizes the space utilization and functional synergy inside the upper housing, and helps to achieve an overall effect of compact structure, high functional integration and stable operation.

[0082] In addition, by setting a gap for communication with the outside world and an opening in the second upper shell, this utility model can effectively avoid safety hazards caused by abnormal increase in internal air pressure or gas retention, such as the risk of seal bursting, liquid splashing, and short circuit. Especially under the conditions of high-frequency operation of the air pump assembly or high-temperature and high-pressure liquid extraction, it can improve the safety and reliability of the device.

[0083] Optionally, in some embodiments, when the air pump assembly in the mounting cavity draws gas from the outside, the gas enters the mounting cavity through the opening in the first upper housing from the gap, and then the air pump assembly draws gas to adjust the air pressure of the first accommodating cavity or the outer liner cavity.

[0084] Optionally, in some embodiments, the air pump assembly is connected to the opening of the first upper housing. When the air pump assembly in the mounting cavity draws gas from the outside, the gas enters the air pump assembly through the opening of the first upper housing from the gap, and then the air pump assembly draws gas to adjust the air pressure of the first accommodating cavity or the outer liner cavity.

[0085] Optionally, in some embodiments, when the air pump assembly in the mounting cavity discharges gas from the outside, the air pump assembly draws gas from the first accommodating cavity or the outer liner cavity, and the gas is discharged from the mounting cavity through the opening of the first upper shell to the outside of the gap.

[0086] Optionally, in some embodiments, the air pump assembly is connected to the opening of the first upper housing. When the air pump assembly in the mounting cavity discharges gas from the outside, the gas in the first accommodating cavity or the outer liner cavity is drawn in by the air pump assembly, and the gas is discharged to the outside of the gap through the opening of the first upper housing.

[0087] like Figures 1 to 7 An extraction device is shown, wherein the brewing material filter 4 is provided with a brewing material placement shell 41 connected to the second upper shell 10, and a lower shell filter screen 42 detachably connected to the lower side of the brewing material placement shell 41. The sealing end 15 is located on the outside of the second upper shell 10. The maximum outer diameter of the brewing material filter 4 is smaller than the maximum outer diameter of the second upper shell 10. The outer diameter of the outer chamber 12 increases from top to bottom.

[0088] Furthermore, as a preferred embodiment of this utility model and not a limitation thereof, the user can conveniently place the ingredients to be brewed into the brewing container during the use of the extraction device, and achieve effective filtration through the lower shell filter screen to prevent brewing residue from entering the outer chamber or affecting the taste of the liquid. At the same time, the detachable structure of the lower shell filter screen allows the user to quickly remove it for cleaning or replacement after use, avoiding residue accumulation and maintaining filtration effectiveness and hygiene performance.

[0089] Specifically, the sealing end is located on the outside of the second upper shell, forming an effective fit with the inner wall of the outer liner, thereby forming a sealing structure between the brewing material filter and the outer liner cavity. The sealing structure can prevent liquid from leaking or seeping out from the gap between the brewing material filter and the outer liner during the extraction process, or maintain a good sealing state when the device is tilted, liquid is poured out, or air pressure is adjusted, thus avoiding liquid overflow and improving the sealing performance and safety of the extraction process.

[0090] In addition, the maximum outer diameter of the brewing filter is smaller than the maximum outer diameter of the second upper shell, so that when the brewing filter is assembled below the second upper shell, the two can form a structural transition and clearance fit. This ensures the stable positioning of the brewing filter in the outer shell cavity and avoids assembly interference or obstruction of liquid flow caused by the excessive diameter of the brewing filter.

[0091] Furthermore, the outer diameter of the outer chamber increases from top to bottom, forming a structure that is narrower at the top and wider at the bottom. This facilitates natural diffusion and retention space as the liquid flows downwards during extraction, allowing the contents to fully expand, soak, and release their active ingredients within the larger lower volume of the chamber, thus improving the thoroughness and uniformity of extraction. Simultaneously, the gradually expanding chamber structure also helps reduce the liquid flow rate and extend the contact time. Additionally, the narrow-at-the-top, wide-at-the-bottom structure of the outer chamber allows the sealing end to easily extend into the outer chamber, enabling an interference fit for a tight seal and reducing liquid leakage.

[0092] Example 1 like Figures 1 to 7 An extraction device is shown, comprising an outer liner 1 and an inner liner 2 detachably connected to the outer liner 1. The outer liner 1 has an outer liner opening 11 and an outer liner cavity 12 communicating with the outer liner opening 11. The inner liner 2 includes an upper shell 3 connected to the upper side of the outer liner 1, a brewing filter 4 connected to the upper shell 3 and communicating with the outer liner cavity 12, and a first receiving cavity 5 connected to the upper side of the upper shell 3. The upper shell 3 has a conveying channel 31 communicating with the brewing filter 4 and the first receiving cavity 5, an air pump assembly 32 with one end communicating with the outer liner cavity 12 or the first receiving cavity 5, and a mounting cavity 33 accommodating the air pump assembly 32. The first receiving cavity 5 is located above the conveying channel 31. The air pump assembly 32 is used to adjust the pressure of the outer liner cavity 12 or the first receiving cavity 5 to cause the liquid to rise and fall and flow.

[0093] This invention uses an air pump assembly 32 to regulate the air pressure in the outer chamber 12 or the first accommodating chamber 5, allowing the liquid to flow in a controllable manner under the action of pressure difference. By setting the first accommodating chamber 5 on the upper side of the conveying channel 31, the user can directly put liquids or ice cubes into the first accommodating chamber 5 during the operation of the device without stopping the machine or disassembling the inner liner 2, thereby simplifying the operation process and improving the efficiency of use.

[0094] Example 2 Based on Example 1, Example 2 also has the following implementation method: The outer liner 1 has a supporting end 13, and the upper shell 3 has an abutting end 14 that mates with the supporting end 13 and a sealing end 15 located below the abutting end 14 and in contact with the inner wall of the outer liner 1. The outer liner 1 has a spout 16 located above the sealing end 15 and communicating with the outer liner cavity 12. The maximum outer diameter of the first receiving cavity 5 is larger than the outer diameter of the conveying channel 31, and the first receiving cavity 5 is located above the outer liner opening 11. The sealing end 15 is made of food-grade silicone.

[0095] Example 3 Based on Example 2, Example 3 also has the following implementation method: The upper housing 3 is provided with a first through hole 34 that communicates with the mounting cavity 33 and the outer bladder cavity 12 respectively. The air pump assembly 32 includes a first air pump 321. One end of the first air pump 321 is connected to the first through hole 34, and the other end of the first air pump 321 is connected to the first accommodating cavity 5 or the outside.

[0096] Example 4 Based on Example 1, Example 4 also has the following implementation method: The upper housing 3 is provided with a second through hole that communicates with the mounting cavity 33 and the first accommodating cavity 5 respectively. The air pump assembly 32 includes a second air pump 322. One end of the second air pump 322 communicates with the second through hole, and the other end of the second air pump 322 communicates with the outer bladder cavity 12 or the outside.

[0097] Example 5 Example 5, based on Examples 3 and 4, also has the following implementation method: The second air pump 322 and the first air pump 321 can work together or be controlled separately to achieve independent or joint regulation of the air pressure of the outer chamber 12 and the first receiving chamber 5, thereby supporting flexible switching of multiple functional modes. Through the coordination of the first air pump 321 and the second air pump 322, the directional addition and circulation of liquid from the first receiving chamber 5 to the outer chamber 12 are realized.

[0098] Example 6 Based on Example 3, Example 6 also has the following implementation method: The upper housing 3 is provided with a liquid level sensor 8 located inside the outer liner cavity 12. The first through hole 34 is located on the lower side of the sealing end 15 where it abuts against the inner wall of the outer liner 1. The liquid level sensor 8 is located between the first through hole 34 and the lowest side of the upper housing 3.

[0099] Example 7 Example 7, based on Example 2, also has the following implementation method: The upper housing 3 is provided with a connecting housing 6 on its upper side. The first accommodating cavity 5 is located in the connecting housing 6. The upper housing 3 is provided with a first connecting end 36 and a second connecting end 37. The brewing filter 4 is provided with a first mating end 46 that is connected to the first connecting end 36. The connecting housing 6 is provided with a second mating end 67 that is connected to the second connecting end 37. The upper side of the connecting housing 6 is provided with a detachable cover 7. The cover 7 is provided with a cover opening 71.

[0100] The first connecting end 36 and the first mating end 46 are fixed by a threaded connection.

[0101] The second connecting end 37 and the second mating end 67 are fixed by a threaded connection.

[0102] Example 8 Example 8, based on Example 7, further includes the following implementation method: The bottom of the connecting housing 6 is provided with a connecting housing opening 61 communicating with the conveying channel 31. The upper side of the upper housing 3 is provided with an upper housing positioning end 38 that is fixed in place with the connecting housing opening 61. The conveying channel 31 passes through the upper housing 3. The mounting cavity 33 is provided with a limiting part 331 for accommodating the air pump assembly 32. A sealing ring is connected between the upper housing positioning end 38 and the connecting housing opening 61.

[0103] Example 9 Example 9, based on Example 8, also has the following implementation method: The upper housing 3 includes a first upper housing 9 that surrounds and forms the mounting cavity 33, and a second upper housing 10. The upper housing positioning end 38 is disposed on the first upper housing 9. The conveying channel 31 and the air pump assembly 32 are respectively disposed on the second upper housing 10. The first upper housing 9 is provided with a first upper housing connecting part 91 and a first upper housing engaging part 92 connected to the upper housing positioning end 38. The second upper housing 10 is provided with a second upper housing connecting part 101 that is connected to the first upper housing connecting part 91 and a second upper housing abutting part 102 located in the conveying channel 31 and engaging with the first upper housing engaging part 92.

[0104] The first upper housing connecting part 91 and the second upper housing connecting part 101 can be connected by fasteners.

[0105] The first upper housing engaging portion 92 and the second upper housing abutting portion 102 are connected by a grooved joint.

[0106] Example 10 Example 10, based on Example 9, also has the following implementation method: The first upper housing 9 is provided with a first upper housing opening 93 that communicates with the mounting cavity 33 and the outside. The second connecting end 37 is provided in the second upper housing 10. A gap 94 communicating with the outside is provided between the second connecting end 37 and the second mating end 67.

[0107] The brewing filter 4 is provided with a brewing container 41 connected to the second upper housing 10 and a lower housing filter screen 42 detachably connected to the lower side of the brewing container 41. The sealing end 15 is located on the outside of the second upper housing 10. The maximum outer diameter of the brewing filter 4 is smaller than the maximum outer diameter of the second upper housing 10. The outer diameter of the outer chamber 12 increases from top to bottom.

[0108] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. An extraction apparatus, comprising an outer liner (1) and an inner liner (2) detachably connected to the outer liner (1), characterized in that: The outer liner (1) is provided with an outer liner opening (11) and an outer liner cavity (12) communicating with the outer liner opening (11). The inner liner (2) includes an upper shell (3) connected to the upper side of the outer liner (1), a brewing filter (4) connected to the upper shell (3) and communicating with the outer liner cavity (12), and a first receiving cavity (5) connected to the upper side of the upper shell (3). The upper shell (3) is provided with a conveying channel (31) communicating with the brewing filter (4) and the first receiving cavity (5), an air pump assembly (32) with one end communicating with the outer liner cavity (12) or the first receiving cavity (5), and an installation cavity (33) for accommodating the air pump assembly (32). The first receiving cavity (5) is located above the conveying channel (31). The air pump assembly (32) is used to adjust the pressure of the outer liner cavity (12) or the first receiving cavity (5) so that the liquid rises and falls.

2. The extraction apparatus according to claim 1, characterized in that: The outer liner (1) is provided with a supporting end (13), the upper shell (3) is provided with an abutting end (14) that cooperates with the supporting end (13) and a sealing end (15) located below the abutting end (14) and in contact with the inner wall of the outer liner (1), the outer liner (1) is provided with a spout (16) located above the sealing end (15) and communicating with the outer liner cavity (12), the maximum outer diameter of the first accommodating cavity (5) is greater than the outer diameter of the conveying channel (31), and the first accommodating cavity (5) is located above the outer liner opening (11).

3. The extraction apparatus according to claim 2, characterized in that: The upper housing (3) is provided with a first through hole (34) that communicates with the mounting cavity (33) and the outer bladder cavity (12) respectively. The air pump assembly (32) includes a first air pump (321). One end of the first air pump (321) is connected to the first through hole (34), and the other end of the first air pump (321) is connected to the first accommodating cavity (5) or the outside.

4. The extraction apparatus according to claim 1, characterized in that: The upper housing (3) is provided with a second through hole that communicates with the mounting cavity (33) and the first accommodating cavity (5) respectively. The air pump assembly (32) includes a second air pump (322). One end of the second air pump (322) is connected to the second through hole, and the other end of the second air pump (322) is connected to the outer bladder cavity (12) or the outside.

5. The extraction apparatus according to claim 3, characterized in that: The upper housing (3) is provided with a liquid level sensor (8) located in the outer bladder cavity (12). The first through hole (34) is located on the lower side of the sealing end (15) and the inner wall of the outer bladder (1). The liquid level sensor (8) is located between the first through hole (34) and the lowermost side of the upper housing (3).

6. An extraction apparatus according to claim 2, characterized in that: The upper housing (3) is provided with a connecting housing (6) on its upper side. The first accommodating cavity (5) is located in the connecting housing (6). The upper housing (3) is provided with a first connecting end (36) and a second connecting end (37). The brewing filter (4) is provided with a first mating end (46) that is connected to the first connecting end (36). The connecting housing (6) is provided with a second mating end (67) that is connected to the second connecting end (37). The upper side of the connecting housing (6) is provided with a detachable cover (7). The cover (7) is provided with a cover opening (71).

7. An extraction apparatus according to claim 6, characterized in that: The bottom of the connecting housing (6) is provided with a connecting housing opening (61) communicating with the conveying channel (31). The upper side of the upper housing (3) is provided with an upper housing positioning end (38) that is fixed in conjunction with the connecting housing opening (61). The conveying channel (31) passes through the upper housing (3). The mounting cavity (33) is provided with a limiting part (331) for accommodating the air pump assembly (32).

8. An extraction apparatus according to claim 7, characterized in that: The upper housing (3) includes a first upper housing (9) that surrounds the mounting cavity (33) and a second upper housing (10). The upper housing positioning end (38) is disposed on the first upper housing (9). The conveying channel (31) and the air pump assembly (32) are respectively disposed on the second upper housing (10). The first upper housing (9) is provided with a first upper housing connecting part (91) and a first upper housing engaging part (92) connected to the upper housing positioning end (38). The second upper housing (10) is provided with a second upper housing connecting part (101) that is connected to the first upper housing connecting part (91) and a second upper housing abutting part (102) located in the conveying channel (31) and engaged with the first upper housing engaging part (92).

9. An extraction apparatus according to claim 8, characterized in that: The first upper housing (9) is provided with a first upper housing opening (93) that communicates with the mounting cavity (33) and the outside. The second connecting end (37) is provided in the second upper housing (10). A gap (94) communicating with the outside is provided between the second connecting end (37) and the second mating end (67).

10. An extraction apparatus according to claim 8, characterized in that: The beverage filter (4) is provided with a beverage placement shell (41) connected to the second upper shell (10) and a lower shell filter screen (42) detachably connected to the lower side of the beverage placement shell (41). The sealing end (15) is located on the outside of the second upper shell (10). The maximum outer diameter of the beverage filter (4) is smaller than the maximum outer diameter of the second upper shell (10). The outer diameter of the outer chamber (12) increases from top to bottom.

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