Portable beverage extraction device

Abstract

The utility model provides a portable beverage extraction device, and relates to the technical field of beverage making, the portable beverage extraction device is characterized by comprising a cylindrical outer cup and a cylindrical inner cup, the outer cup is of a structure with a closed bottom and an open top, and the outer cup is provided with a first containing cavity; the inner cup comprises a cup body, a cup cover and a filtering device; a second accommodating cavity is formed in the cup body; the bottom and the top of the cup body are opened; the cup cover is detachably arranged at the opening position of the top of the cup body; the side wall of the outer cup comprises a guide section and a sealing section from top to bottom, the diameter of the guide section is larger than that of the sealing section, the inner diameter of the guide section is larger than the outer diameter of the cup body, and a step structure formed by the guide section and the sealing section enables the inner cup to be clamped in a first containing cavity corresponding to the guide section under the dead weight; and under the action of pressure, the sealing section slides into the first accommodating cavity corresponding to the sealing section. The portable beverage extraction device has the advantages that the number of parts is small, operation is convenient, and functions are rich.

Description

Technical Field

[0001] The present application relates to the technical field of beverage preparation, and in particular, to a portable beverage extraction device. Background Art

[0002] Existing portable hand-pressed coffee machines usually include a coffee cup, a filter barrel, a filter screen, a filter cover, a pressure rod and other components. The filter screen and the filter cover are installed at the bottom of the filter barrel, coffee powder is added to the filter barrel, and then hot water or cold water is added to the filter barrel. After stirring evenly, coffee is extracted. After extraction, the pressure rod is installed in the filter barrel and pressed downward, so that the extracted coffee liquid passes through the filter screen and enters the coffee cup, and the coffee grounds remain in the filter barrel.

[0003] Although the existing portable coffee machines have improved portability, they still require a coffee cup to receive the coffee, and the overall size is still relatively large. In addition, due to the large number of detachable accessories and cleaning accessories, the operation convenience is insufficient. At the same time, since the container formed by the filter barrel, filter screen, and filter cover is not sealed, coffee liquid that has not been fully extracted will flow out after water is added, and the extraction time is relatively short. Especially during cold brewing, insufficient extraction is prone to occur, resulting in insufficient taste.

[0004] In response to the above problems, some existing technologies have proposed improvements. For example, the Chinese utility model patent with application number 202223364552.X discloses a portable French press coffee brewing device. Specifically, it proposes that a sealing component is provided between the inner cup and the outer cup. After the inner cup is pressed down, the coffee liquid in the outer cup is pressed into the inner cup, so that you don’t need to take out the filter cup and can drink directly from the inner cup; after the inner cup is pressed down, the inner cup can be pulled out again. Under the vacuum suction of the outer cup, the coffee liquid is sucked into the outer cup. When the inner cup is pulled out, the filter cup and the coffee powder in the filter cup are taken out at the same time, and you can drink directly from the outer cup. You can also inject water into the outer cup and press the inner cup down into the outer cup. During the process of pressing down the inner cup, the water in the outer cup flows upward through the filter cup and flows and brews the coffee powder in the filter cup. Brewing coffee powder with flowing water is conducive to increasing the concentration of coffee liquid.

[0005] The above-mentioned prior art can inject water into the outer cup and press the inner cup downward into the outer cup. During the process of pressing the inner cup downward, the water in the outer cup flows upward through the filter cup and flows and brews the coffee powder in the filter cup. Brewing coffee powder with flowing water is beneficial to increasing the concentration of coffee liquid. However, it requires a separate filter cup for placing coffee powder, which takes up additional space. In addition, during the cleaning process, the filter cup needs to be disassembled and assembled, there are many parts, and the problem of difficult cleaning still exists.

[0006] In addition, the Chinese invention patent application with application number 201811567072.9 proposes a manual pressure coffee machine. Specifically, it proposes placing coffee materials in the inner tank. When the inner tank is pulled out, the enclosed space increases, and a negative pressure is formed therein, so that the coffee liquid in the inner tank cavity is sucked into the enclosed space. After the inner tank is pulled out, the coffee in the cup cavity is drunk, and the coffee is brewed by air pressure. In addition, a driving device is provided to drive the inner tank, making the operation more convenient; an opening is provided on the bottom wall, and the filter covers the opening and presses it against the bottom wall of the inner tank, so that the filter is convenient to disassemble and wash.

[0007] The solution used in the above-mentioned prior art can reduce the number of parts. However, the coffee brewing method using air pressure has the problem of difficult operation. During the operation, the inner capsule needs to be pulled out, and under the action of air pressure, the operation of pulling out the inner capsule is very difficult. In order to reduce the difficulty of operation, it is necessary to set an additional driving device to drive the inner capsule to move, which leads to an increase in parts and increases the complexity of the structure.

[0008] In view of the above problems, the present application proposes a new technical solution. Utility Model Content

[0009] The purpose of the present application is to provide a portable beverage extraction device, which has the advantages of a small number of parts, easy operation and rich functions.

[0010] In the first aspect, the present application provides a portable beverage extraction device, and the technical solution is as follows:

[0011] It comprises a cylindrical outer cup and an inner cup, wherein the outer cup is a structure with a closed bottom and an open top, and is provided with a first accommodating cavity;

[0012] The portable beverage extraction device is composed only of the outer cup and the inner cup;

[0013] The inner cup comprises a cup body with a second accommodating cavity formed therein and with openings at the bottom and top, a cup cover detachably arranged at the opening position at the top of the cup body, and a filtering device arranged at the opening position at the bottom of the cup body;

[0014] The side wall of the outer cup includes a guide section and a sealing section from top to bottom, the inner diameter corresponding to the guide section is larger than the inner diameter corresponding to the sealing section, and the inner diameter corresponding to the guide section is larger than the outer diameter of the cup body, and the step structure formed by the guide section and the sealing section enables the inner cup to be stuck in the first accommodating cavity corresponding to the guide section under its own weight, and slide into the first accommodating cavity corresponding to the sealing section under the action of pressure.

[0015] The inner cup is composed of a cup body, a cup cover and a filtering device, and the portable beverage extraction device is composed of only an outer cup and an inner cup. The number of parts is small, and there is no need to set up additional containers and structures for placing the extracted substances like in the prior art. Therefore, the internal space occupied is also small, the parts are easy to disassemble and assemble, and it has a larger actual available volume. In addition, a guide section and a sealing section are provided on the outer cup. The guide section and the sealing section form a stepped structure due to the size difference. In the stepped structure, the cup body is stuck in the first receiving cavity corresponding to the guide section under its own weight, and can slide into the first receiving cavity corresponding to the sealing section under pressure. The self-weight of the cup body referred to above includes the full load situation of the cup body filled with liquid, that is, in one of the usage methods, the user can put the extracted substance and water into the first receiving cavity to mix them to obtain a mixed liquid, and then align the inner cup with the first receiving cavity and press down. The inner cup is pressed under pressure. Under the action of the filter, the mixed liquid moves downward from the first receiving chamber through the filtering device and then enters the second receiving chamber, thereby obtaining a drink, and the particles of the extracted substance remain at the bottom of the first receiving chamber. After pouring out the drink or using the drink directly, the outer cup and the inner cup can be cleaned by taking out the inner cup; in addition, in another use method, the extracted substance and water can be placed in the second receiving chamber and mixed to obtain a mixed liquid, and then the inner cup is placed in the first receiving chamber. In this case, since the guide section and the sealing section form a stepped structure, the inner cup is stuck in the first receiving chamber corresponding to the guide section, and the mixed liquid in the second receiving chamber passes through the filtering device and then drips into the first receiving chamber corresponding to the sealing section to form a drink. This method is a drip filtration method, that is, through the solution provided by the present application, the above two methods can be used to extract and obtain a drink. Therefore, it has the beneficial effects of a small number of parts, convenient operation and rich functions.

[0016] Furthermore, in the present application, a sealing member is provided at the outer bottom of the cup body.

[0017] Furthermore, in the present application, the sealing member protrudes from the outer side of the cup body, and the sealing member is elastic.

[0018] Furthermore, in the present application, a first exhaust structure connecting the outside with the first accommodating chamber is provided in the connecting transition area between the guide section and the sealing section, so that when the inner cup is stuck in the first accommodating chamber corresponding to the guide section under its own weight, the first accommodating chamber is kept connected with the outside through the first exhaust structure.

[0019] Furthermore, in the present application, a first transition section is provided between the guide section and the sealing section.

[0020] Furthermore, in the present application, the cup body includes a first mating section and a second mating section from top to bottom, the diameter corresponding to the first mating section is larger than the diameter corresponding to the second mating section, the inner diameter corresponding to the first mating section is the same as the inner diameter corresponding to the top side wall of the outer cup, or the outer diameter corresponding to the first mating section is the same as the outer diameter corresponding to the top side wall of the outer cup, the first mating section is connected and mated with the cup cover, and the second mating section is slidably mated with the first accommodating cavity.

[0021] Further, in the present application, a second transition section is provided between the first mating section and the second mating section.

[0022] Furthermore, in the present application, the cup cover is provided with a second exhaust structure for connecting the outside with the second accommodation cavity.

[0023] Further, in the present application, a first groove recessed inwardly is provided at the bottom of the cup body, the filter device is arranged in the first groove, and the filter device located in the first groove is spaced apart from the bottom surface of the cup body.

[0024] Furthermore, in the present application, in a state where no extracted substance is placed, the spacing volume formed by the contact between the cup body and the first containing cavity is smaller than the volume of the minimum amount of extracted substance required for making a beverage.

[0025] As can be seen from the above, the portable beverage extraction device provided by the present application comprises an inner cup composed of a cup body, a cup cover and a filtering device. The portable beverage extraction device is composed of only an outer cup and an inner cup, with a small number of parts and components, and there is no need to set up additional containers and structures for placing the extracted substances as in the prior art. Therefore, the internal space occupied is also small, the parts are easy to disassemble and assemble, and it has a larger actual available volume. In addition, a guide section and a sealing section are provided on the outer cup, and a stepped structure is formed between the guide section and the sealing section due to the size difference. In the stepped structure, the cup body is stuck in the first receiving cavity corresponding to the guide section under its own weight, and can slide into the first receiving cavity corresponding to the sealing section under the action of pressure, wherein the above-mentioned dead weight of the cup body includes the full load situation of the cup body being filled with liquid, that is, in one of the usage methods, the user can put the extracted substance and water into the first receiving cavity to mix them to obtain a mixed liquid, and then align the inner cup with the first receiving cavity and then to The inner cup is pressed downward, and the mixed liquid passes through the filtering device from the first receiving chamber and enters the second receiving chamber, thereby obtaining a drink, and the particles of the extracted substance remain at the bottom of the first receiving chamber. After pouring out the drink or using the drink directly, the inner cup can be taken out to clean the outer cup and the inner cup; in addition, in another use method, the extracted substance and water can be put into the second receiving chamber and mixed to obtain a mixed liquid, and then the inner cup is put into the first receiving chamber. In this case, since the guide section and the sealing section form a stepped structure, the inner cup is stuck in the first receiving chamber corresponding to the guide section, and the mixed liquid in the second receiving chamber passes through the filtering device and drips into the first receiving chamber corresponding to the sealing section to form a drink. This method is a drip filtering method, that is, through the solution provided by the present application, the above two methods can be used to extract and obtain a drink. Therefore, it has the beneficial effects of a small number of parts, convenient operation and rich functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of a portable beverage extraction device provided in this application.

[0027] Figure 2 This is a schematic diagram of the structure of a portable beverage extraction device provided in this application.

[0028] Figure 3 This is a schematic diagram of the structure of a portable beverage extraction device provided in this application.

[0029] Figure 4 This is a schematic diagram of the structure of a portable beverage extraction device provided in this application.

[0030] In the figure: 100, outer cup; 200, inner cup; 110, first accommodating chamber; 120, guide section; 130, sealing section; 140, first exhaust structure; 150, first transition section; 210, cup body; 220, cup cover; 230, filtering device; 240, second accommodating chamber; 250, sealing member; 260, first matching section; 270, second matching section; 280, second transition section; 290, first groove; 001, mixed liquid; 002, beverage; 003, extracted substance. DETAILED DESCRIPTION

[0031] The technical solutions in the present application will be clearly and completely described below in conjunction with the drawings in the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0032] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0033] Please refer to Figures 1 to 4 , this application proposes a portable beverage 002 extraction device, the technical solution is as follows:

[0034] The invention comprises a cylindrical outer cup 100 and an inner cup 200. The outer cup 100 is a structure with a closed bottom and an open top, and is provided with a first accommodating cavity 110.

[0035] The portable beverage 002 extraction device consists only of an outer cup 100 and an inner cup 200;

[0036] The inner cup 200 includes a cup body 210 with a second accommodating cavity 240 formed therein and with openings at the bottom and top, a cup cover 220 detachably disposed at the top opening of the cup body 210, and a filter device 230 disposed at the bottom opening of the cup body 210;

[0037] The side wall of the outer cup 100 includes a guide section 120 and a sealing section 130 from top to bottom. The inner diameter corresponding to the guide section 120 is larger than the inner diameter corresponding to the sealing section 130. The inner diameter corresponding to the guide section 120 is larger than the outer diameter of the cup body 210. The stepped structure formed by the guide section 120 and the sealing section 130 enables the inner cup 200 to be stuck in the first accommodating cavity 110 corresponding to the guide section 120 under its own weight, and slide into the first accommodating cavity 110 corresponding to the sealing section 130 under the action of pressure.

[0038] The filter device 230 may specifically be a filter net or other filter structure, the purpose of which is to allow water or other liquids to slowly penetrate and prevent the particles of the extracted substance 003 from penetrating, so that water or other liquids can slowly flow between the first accommodating chamber 110 and the second accommodating chamber 240 .

[0039] The outer diameter of the cup body 210 is equivalent to the inner diameter corresponding to the sealing section 130 , and the matching mode between the cup body 210 and the first accommodating cavity 110 corresponding to the sealing section 130 can be specifically a transition fit.

[0040] Among them, a cup cover 220 is arranged on the top of the cup body 210. The cup cover 220 can be used to prevent dust on the one hand, and on the other hand, it can increase the force-bearing area, so that the user can apply pressure to the cup body 210 by pressing the cup cover 220 during use, which is convenient for user operation.

[0041] The inner cup 200 is composed of a cup body 210, a cup cover 220 and a filtering device 230, and the portable beverage 002 extraction device is only composed of an outer cup 100 and an inner cup 200. The number of parts is small, and there is no need to set up additional containers and structures for placing the extracted substance 003 as in the prior art. Therefore, the internal space occupancy is also small, the parts are easy to disassemble and assemble, and it has a larger actual available volume. In addition, a guide section 120 and a sealing section 130 are provided in the outer cup 100. The guide section 120 and the sealing section 130 form a stepped structure due to the size difference. In the stepped structure, the cup body 210 is stuck in the first accommodating cavity 110 corresponding to the guide section 120 under its own weight, and can slide into the first accommodating cavity 110 corresponding to the sealing section 130 under pressure. The above-mentioned self-weight of the cup body 210 includes the full load condition of the cup body 210 filled with liquid.

[0042] That is, refer to Figure 2 and Figure 3 In one of the usage modes, the user can put the extracted substance 003 and water into the first receiving chamber 110 to mix them to obtain the mixed liquid 001, and then align the inner cup 200 with the first receiving chamber 110 and press downward in the direction of the arrow. The inner cup 200 moves downward under the pressure. Figure 3, the mixed liquid 001 passes through the filtering device 230 from the first containing chamber 110 under pressure and enters the second containing chamber 240, thereby obtaining the beverage 002, and the particles of the extracted substance 003 remain at the bottom of the first containing chamber 110. After pouring out the beverage 002 or directly using the beverage 002, the inner cup 200 is taken out to clean the outer cup 100 and the inner cup 200;

[0043] In addition, refer to Figure 4 In another usage, the extracted substance 003 and water can be placed in the second receiving chamber 240 and mixed to obtain a mixed liquid 001, and then the inner cup 200 is placed in the first receiving chamber 110. In this case, since the guide section 120 and the sealing section 130 form a stepped structure, the inner cup 200 is stuck in the first receiving chamber 110 corresponding to the guide section 120. The mixed liquid 001 in the second receiving chamber 240 passes through the filtering device 230 and slowly drips into the first receiving chamber 110 corresponding to the sealing section 130 to form a beverage 002. This method is a drip filtering method.

[0044] That is, through the scheme provided by the present application, the above-mentioned two methods can be used to extract and obtain beverage 002. The first method of use is to filter after applying a certain pressure to obtain coffee beverage 002. The oil of the coffee extracted in this way floats on the top of the mixed liquid 001, and the oil enters the second containing chamber 240 after passing through the filter device 230. The second method of use is a drip filtration method. The oil floats on the top of the mixed liquid 001 and is difficult to pass through the extracted substance 003 and the filter device 230 to enter the first containing chamber 110. Under the same powder-water ratio, the beverage 002 prepared by the first method is more fragrant than the beverage 002 prepared by the second method. Users can choose different methods of use according to different needs. Therefore, it has the beneficial effects of a small number of parts, convenient operation and rich functions.

[0045] The extracted substance 003 may specifically be coffee powder or tea leaves used for brewing to obtain the beverage 002 .

[0046] Among them, other liquids may be added into the first containing chamber 110 .

[0047] Further, refer to Figures 2 to 4 In some embodiments, a sealing member 250 is disposed at the outer bottom of the cup body 210 .

[0048] By setting a seal 250 at the outer bottom of the cup body 210 , when using the first method, when the inner cup 200 is pressed down, the mixed liquid 001 in the first receiving chamber 110 will not overflow from the gap between the inner cup 200 and the outer cup 100 .

[0049] Furthermore, in some embodiments, the sealing member 250 protrudes from the outer side of the cup body 210 , and the sealing member 250 is elastic.

[0050] Specifically, the sealing member 250 may be a rubber sealing ring.

[0051] By providing a seal 250 protruding from the outside of the cup body 210 and having elasticity, when the cup body 210 is placed in the first accommodating cavity 110, the protruding seal 250 can contact the inner wall of the top of the sealing section 130, thereby supporting the inner cup 200. Under a certain pressure, the seal 250 undergoes elastic contraction and deformation, allowing the entire inner cup 200 to slide into the first accommodating cavity 110 corresponding to the sealing section 130.

[0052] Further, refer to Figure 2 and Figure 3 In some of the embodiments, a first exhaust structure 140 connecting the outside with the first accommodating chamber 110 is provided in the connecting transition area between the guide section 120 and the sealing section 130, so that when the inner cup 200 is stuck in the first accommodating chamber 110 corresponding to the guide section 120 under its own weight, the first exhaust structure 140 maintains the connection between the first accommodating chamber 110 and the outside.

[0053] The first exhaust structure 140 may specifically be a through hole.

[0054] By providing the first exhaust structure 140 , when using the second method, the first accommodating chamber 110 can be connected to the external atmosphere, which is beneficial for the mixed liquid 001 in the second accommodating chamber 240 to penetrate into the first accommodating chamber 110 through the filtering device 230 .

[0055] Further, refer to Figure 2 In some of the embodiments, a first transition section 150 is disposed between the guide section 120 and the sealing section 130 .

[0056] The first transition section 150 may be a slope or a curved surface.

[0057] A first transition section 150 is provided between the guide section 120 and the sealing section 130. When the cup body 210 is placed into the first accommodating cavity 110, the cup body 210 contacts the first transition section 150. Preferably, the first transition section 150 can be set to an arc surface, which facilitates the cup body 210 to slide into the first accommodating cavity 110 corresponding to the sealing section 130 after applying a certain pressure.

[0058] Furthermore, in some of the embodiments, the cup body 210 includes a first mating segment 260 and a second mating segment 270 from top to bottom, the diameter corresponding to the first mating segment 260 is larger than the diameter corresponding to the second mating segment 270, the inner diameter corresponding to the first mating segment 260 is the same as the inner diameter corresponding to the top side wall of the outer cup 100, or the outer diameter corresponding to the first mating segment 260 is the same as the outer diameter corresponding to the top side wall of the outer cup 100, the first mating segment 260 is connected and mated with the cup cover 220, and the second mating segment 270 is slidably mated with the first accommodating cavity 110.

[0059] Through the above arrangement, the cup cover 220 can be matched with both the cup body 210 and the outer cup 100, because in the solution of the present application, the inner cup 200 can be used as a container for placing the drink 002, and the outer cup 100 can also be used as a container for placing the drink 002. When the outer cup 100 is used as a container for placing the drink 002, the inner cup 200 can be taken out and the cup cover 220 can be matched with the outer cup 100.

[0060] Furthermore, in some of the embodiments, a second transition section 280 is disposed between the first mating section 260 and the second mating section 270 .

[0061] The second transition section 280 may be a slope or a curved surface.

[0062] Preferably, the second transition section 280 can be set as an arc surface. An arc-shaped second transition section 280 is set between the first mating section 260 and the second mating section 270 to avoid stress concentration. At the same time, when using the first method, the inner cup 200 needs to be pressed down. When the inner cup 200 moves down a certain distance, the second transition section 280 contacts the top of the outer cup 100. Setting the second transition section 280 into an arc shape can disperse the contact force during the contact between the second transition section 280 and the top of the outer cup 100, thereby avoiding bumps and damage and improving the service life.

[0063] Furthermore, in some of the embodiments, the cup cover 220 is provided with a second exhaust structure for connecting the outside with the second accommodating cavity 240 .

[0064] The second exhaust structure may specifically be a through hole.

[0065] By providing the second exhaust structure on the cup cover 220 , when the first method is used, it is advantageous for the mixed liquid 001 in the first accommodating chamber 110 to penetrate into the second accommodating chamber 240 through the filtering device 230 .

[0066] Furthermore, in some of the embodiments, a first groove 290 recessed inwardly is provided at the bottom of the cup body 210 , and the filter device 230 is disposed in the first groove 290 . The filter device 230 in the first groove 290 is spaced apart from the bottom surface of the cup body 210 .

[0067] Through the above arrangement, a spacing area is formed between the filter device 230 and the bottom surface of the cup body 210 . The spacing area can be used to accommodate particles of the extracted substance 003 after the bottom surface of the cup body 210 contacts the bottom surface of the first accommodating chamber 110 .

[0068] Specifically, in a state where no extracted substance 003 is placed, the volume of the interval formed by the contact between the cup body 210 and the first receiving chamber 110 is smaller than the volume of the minimum amount of extracted substance 003 required for making the beverage 002 .

[0069] Through the above arrangement, the extraction effect can be ensured, that is, under the above arrangement, when the cup body 210 moves downwardly close to the bottom of the first accommodating chamber 110, aromatic substances such as oils in the extracted substance 003 can be extracted.

[0070] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of protection of the present application.

Claims

1. A portable beverage extraction device, comprising a cylindrical outer cup (100) and an inner cup (200), wherein the outer cup (100) is a structure with a closed bottom and an open top, and is provided with a first accommodating cavity (110), characterized in that: The portable beverage extraction device consists only of the outer cup (100) and the inner cup (200); The inner cup (200) comprises a cup body (210) with a second accommodating cavity (240) formed therein and with openings at the bottom and top, a cup cover (220) detachably arranged at the top opening of the cup body (210), and a filtering device (230) arranged at the bottom opening of the cup body (210); The side wall of the outer cup (100) includes a guide section (120) and a sealing section (130) from top to bottom, the inner diameter corresponding to the guide section (120) is larger than the inner diameter corresponding to the sealing section (130), and the inner diameter corresponding to the guide section (120) is larger than the outer diameter of the cup body (210). The step structure formed by the guide section (120) and the sealing section (130) enables the inner cup (200) to be stuck in the first accommodating cavity (110) corresponding to the guide section (120) under its own weight, and slide into the first accommodating cavity (110) corresponding to the sealing section (130) under the action of pressure.

2. A portable beverage extraction device according to claim 1, characterized in that: A sealing member (250) is provided at the outer bottom of the cup body (210).

3. A portable beverage extraction device according to claim 2, characterized in that: The sealing member (250) protrudes from the outer side of the cup body (210), and the sealing member (250) is elastic.

4. A portable beverage extraction device according to claim 1, characterized in that: A first exhaust structure (140) communicating with the outside and the first accommodating chamber (110) is provided in the connecting transition area between the guide section (120) and the sealing section (130), so that when the inner cup (200) is stuck in the first accommodating chamber (110) corresponding to the guide section (120) under its own weight, the first exhaust structure (140) maintains the connection between the first accommodating chamber (110) and the outside.

5. The portable beverage extraction device according to claim 1, characterized in that: A first transition section (150) is provided between the guide section (120) and the sealing section (130).

6. The portable beverage extraction device according to claim 1, characterized in that: The cup body (210) includes a first fitting section (260) and a second fitting section (270) from top to bottom, the diameter corresponding to the first fitting section (260) is larger than the diameter corresponding to the second fitting section (270), the inner diameter corresponding to the first fitting section (260) is the same as the inner diameter corresponding to the top side wall of the outer cup (100), or the outer diameter corresponding to the first fitting section (260) is the same as the outer diameter corresponding to the top side wall of the outer cup (100), the first fitting section (260) is connected and fitted with the cup cover (220), and the second fitting section (270) is slidably fitted with the first accommodating cavity (110).

7. A portable beverage extraction device according to claim 6, characterized in that: A second transition section (280) is provided between the first mating section (260) and the second mating section (270).

8. The portable beverage extraction device according to claim 1, characterized in that: The cup cover (220) is provided with a second exhaust structure for connecting the outside with the second accommodating chamber (240).

9. The portable beverage extraction device according to claim 1, characterized in that: The bottom of the cup body (210) is provided with a first groove (290) recessed inwardly, the filter device (230) is arranged in the first groove (290), and the filter device (230) located in the first groove (290) is spaced apart from the bottom surface of the cup body (210).

10. A portable beverage extraction device according to any one of claims 1 to 9, characterized in that: In a state where no extracted substance (003) is placed, the volume of the interval formed by the contact between the cup body (210) and the first containing cavity (110) is smaller than the volume of the minimum amount of extracted substance (003) required for making a beverage (002).

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