Coffee powder stirring device in low vacuum environment

Abstract

The utility model provides a kind of coffee powder stirring device under low vacuum environment, it is related to coffee making tool field.The powder stirring device includes: cabinet, inside is provided with coffee powder stirring chamber, and outside is provided with the opening being connected with coffee powder stirring chamber, opening is provided with sealing door;Coffee stirring structure, including electric powder stirrer and linear guide mechanism being all arranged in coffee powder stirring chamber, electric powder stirrer is installed on linear guide mechanism;Coffee powder feeding structure, including base and powder bowl support seat, base is slidably arranged in the bottom of coffee powder stirring chamber, powder bowl support seat is arranged on base;Pneumatic pressure adjusting structure, including negative pressure generator and pressure relief valve, negative pressure generator is connected to coffee powder stirring chamber, pressure relief valve is arranged on coffee powder stirring chamber;And plasma field generator, it is arranged in coffee powder stirring chamber.This application is stirred under low vacuum environment, accelerate the carbon dioxide gas generated after coffee roasting to discharge, improve the concentration and efficiency of subsequent high-pressure extraction.

Description

Technical Field

[0001] This utility model relates to the field of coffee making tools, and more specifically, to a coffee mixing device for a low vacuum environment. Background Technology

[0002] As people's living standards continue to improve, drinking coffee has become a lifestyle enjoyment. To make an espresso, first, put coffee beans into a coffee grinder, adjust the grind to your preference, and start the machine to grind a suitable amount of fine coffee powder. Next, place the coffee caddy under the grinder's outlet to collect the ground coffee. Then, gently pour the coffee powder from the caddy into the coffee bowl of the espresso machine, distributing it as evenly as possible. Next, use the tamper to compact the coffee powder in the bowl into a firm puck. After installing the puck, start the espresso machine, allowing hot, high-pressure water to extract the coffee powder through the puck. After a short time, a rich, full-bodied espresso with abundant crema is ready.

[0003] In the process of making espresso, after the coffee grounds are poured into the portafilter from the receiving cup, they need to be stirred with a stirrer. This stirrer uses needles to agitate the coffee grounds, breaking up any clumps and ensuring a more even distribution of the coffee powder within the portafilter, thus improving the quality of the subsequent extraction.

[0004] However, most existing coffee grinders operate at room temperature and pressure, a process with significant drawbacks: coffee roasting continuously releases carbon dioxide, which tends to become trapped between coffee grounds. Stirring at room temperature and pressure makes it difficult to completely expel this gas, and may even further entrain air, leading to the formation of tiny air pockets within the coffee grounds. This creates localized air resistance during subsequent high-pressure extraction, hindering the even penetration of high-temperature, high-pressure water into the coffee puck. This reduces the concentration and efficiency of the extracted coffee, and also affects the final balance and fullness of the flavor. Utility Model Content

[0005] The purpose of this invention is to provide a coffee stirring device for a low vacuum environment, which aims to solve the technical problems mentioned in the background art.

[0006] The embodiments of this utility model are implemented as follows: This application provides a coffee mixing device for a low vacuum environment, comprising: a housing with a coffee mixing chamber inside and an opening communicating with the coffee mixing chamber on the outside, the opening being equipped with a sealing door for adjusting the opening's opening or closing; a coffee stirring structure including an electric mixer and a linear guide mechanism both disposed within the coffee mixing chamber, the electric mixer being mounted on the linear guide mechanism and driven by the linear guide mechanism to reciprocate along the height direction of the coffee mixing chamber; and a coffee powder feeding structure including a base and a coffee bowl support, the base being slidably disposed at the bottom of the coffee mixing chamber, and the coffee bowl support being disposed on the base; wherein the base has a first working position and a second working position along a sliding trajectory. When the base is in the first working position, both the bowl holder and the base are located in the coffee mixing chamber, and the bowl holder is located directly below the stirring section of the electric mixer. When the base slides to the second working position, the base moves the bowl holder through the opening to the outside of the coffee mixing chamber. The pressure regulating structure includes a negative pressure generator and a pressure relief valve. The negative pressure generator is connected to the coffee mixing chamber and is used to extract gas from the coffee mixing chamber. The pressure relief valve is installed on the coffee mixing chamber and is used to control the connection between the coffee mixing chamber and the external environment. A plasma field generator is installed in the coffee mixing chamber and is used to form a plasma field at the bowl holder in the first working position.

[0007] Furthermore, based on the aforementioned scheme, the linear guide rail mechanism includes: a vertical guide rail, which is arranged along the height direction of the coffee mixing chamber and forms a guide groove; a sliding part, which is slidably disposed in the guide groove and connected to the electric mixer via a bracket; a limiting block, which is slidably disposed in the guide groove below the sliding part; and a positioning bolt, which is disposed on the limiting block and used to fix the sliding limiting block to the vertical guide rail.

[0008] Furthermore, based on the aforementioned scheme, the electric powder mixer includes a drive motor and a powder mixing needle assembly, with the output end of the drive motor being connected to the powder mixing needle assembly in a transmission manner.

[0009] Furthermore, based on the aforementioned scheme, a guide slide is provided at the bottom of the coffee mixing chamber, and a sliding groove is formed on the base to cooperate with the guide slide.

[0010] Furthermore, based on the aforementioned scheme, the base is also provided with a first support and a second support, and the powder bowl support, the first support and the second support are arranged sequentially at intervals along the sliding direction of the base.

[0011] Furthermore, based on the aforementioned scheme, the first support component includes: a fixed support portion disposed on the base and having a lifting groove formed on its top; a movable support portion disposed in the lifting groove; and a locking bolt disposed on the movable support portion for locking it to the fixed support portion after the movable support portion is raised or lowered.

[0012] Furthermore, based on the aforementioned scheme, the number of the aforementioned powder bowl support bases is at least two, the number of the aforementioned electric powder mixers is equal to the number of the aforementioned powder bowl support bases, and each of the aforementioned electric powder mixers is provided in a one-to-one correspondence with each of the aforementioned powder bowl support bases.

[0013] Furthermore, based on the aforementioned solution, the chassis is made of transparent acrylic sheet.

[0014] Furthermore, based on the aforementioned scheme, the chassis is also provided with an independent mounting cavity, and the negative pressure generator is located inside the mounting cavity; the control button of the negative pressure generator is located on the outer side of the chassis.

[0015] Furthermore, based on the aforementioned scheme, a pressure gauge is also installed inside the installation cavity to monitor the air pressure inside the coffee mixing chamber.

[0016] Compared with the prior art, the embodiments of this utility model have at least the following advantages or beneficial effects: In use, the low-vacuum coffee stirring device of this application involves first opening the sealed door and pulling out the base. After placing the coffee bowl containing coffee powder on the bowl support, the base is pushed to the first working position. The stirring section of the electric stirrer extends into the coffee bowl via a linear guide mechanism. After closing the sealed door, a negative pressure generator extracts gas from the coffee stirring chamber to create a low-vacuum environment. Simultaneously, a plasma field generator creates a plasma field at the coffee bowl, causing the electric stirrer to stir the coffee. After stirring, the pressure is restored to normal through a pressure relief valve, and the coffee bowl can be removed by opening the sealed door. Its core advantage lies in the fact that the low-vacuum environment created by the negative pressure generator and the sealed door accelerates the release of carbon dioxide gas generated after coffee roasting, thereby improving the concentration and efficiency of subsequent high-pressure extraction. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a coffee mixing device under low vacuum environment according to an embodiment of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a coffee mixing device under low vacuum environment according to an embodiment of the present invention. Figure 2 ; Figure 3 for Figure 1 Partial diagram Figure 1 ; Figure 4 for Figure 1 Partial diagram Figure 2 ; Figure 5 for Figure 1 Partial diagram Figure 3 ; Figure 6 for Figure 5 A magnified view of part A in the image; Figure 7 This is a partial schematic diagram of the base of an embodiment of the present utility model; Figure 8 This is a schematic diagram of the linear guide mechanism according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the connection between the sliding part and the electric mixer in an embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of the vertical guide rail according to an embodiment of the present invention.

[0019] Icons: 1-Chassis, 101-Coffee Stirring Chamber, 102-Installation Chamber, 2-Control Button, 3-Pressure Relief Valve, 4-Sealed Door, 5-Powder Bowl Support, 6-Electric Stirrer, 601-Drive Motor, 602-Stirring Needle Assembly, 7-First Support Component, 701-Fixed Support Component, 702-Modible Support Component, 8-Second Support Component, 9-Base, 10-Guide Slide, 11-Pressure Gauge, 12-Negative Pressure Generator, 13-Plasma Field Generator, 14-Vertical Slot, 15-Bracket, 16-Vertical Guide Rail, 1601-Guide Slot, 17-Sliding Slot, 18-Positioning Bolt, 19-Sliding Part, 20-Abutment Plate. Detailed Implementation

[0020] The embodiments of this application will now be described in detail with reference to the accompanying drawings. Example

[0021] Please refer to Figure 1-10This application provides a coffee mixing device for a low vacuum environment, comprising: a housing 1, with a coffee mixing chamber 101 inside and an opening communicating with the coffee mixing chamber 101 outside, the opening being equipped with a sealing door 4 for adjusting the opening's opening or closing; a coffee stirring structure, including an electric mixer 6 and a linear guide mechanism both disposed within the coffee mixing chamber 101, the electric mixer 6 being mounted on the linear guide mechanism and driven by the linear guide mechanism to reciprocate along the height direction of the coffee mixing chamber 101; and a coffee powder feeding structure, including a base 9 and a coffee bowl support 5, the base 9 being slidably disposed at the bottom of the coffee mixing chamber 101, and the coffee bowl support 5 being disposed on the base 9; wherein the base 9 has a first working position and a second working position along a sliding trajectory; when the base 9... When the coffee bowl support 5 and the base 9 are in the first working position, both are located inside the coffee mixing chamber 101, and the coffee bowl support 5 is located directly below the stirring part of the electric mixer 6. When the base 9 slides to the second working position, the base 9 drives the coffee bowl support 5 to move out of the coffee mixing chamber 101 through the opening. The air pressure regulating structure includes a negative pressure generator 12 and a pressure relief valve 3. The negative pressure generator 12 is connected to the coffee mixing chamber 101 and is used to extract the gas inside the coffee mixing chamber 101. The pressure relief valve 3 is installed on the coffee mixing chamber 101 and is used to control the connection between the coffee mixing chamber 101 and the external environment. The plasma field generator 13 is installed inside the coffee mixing chamber 101 and is used to form a plasma field at the coffee bowl support 5 in the first working position.

[0022] When using the low-vacuum coffee mixing device of this application, first open the sealing door 4 and pull out the base 9. After placing the coffee bowl containing coffee powder on the coffee bowl support 5, push the base 9 to the first working position. The mixing part of the electric mixer 6 is driven into the coffee bowl by the linear guide mechanism. After closing the sealing door 4, the negative pressure generator 12 draws the gas in the coffee mixing chamber 101 to form a low-vacuum environment. At the same time, the plasma field generator 13 forms a plasma field at the coffee bowl, so that the electric mixer 6 can stir. After the stirring is finished, the pressure is restored to normal pressure through the pressure relief valve 3. The coffee bowl can be removed by opening the sealing door 4. Its core advantages lie in the low-vacuum environment created by the negative pressure generator 12 and the sealing door 4, which accelerates the expulsion of carbon dioxide gas generated after coffee roasting, thereby improving the concentration and efficiency of subsequent high-pressure extraction. Combined with the plasma field generator 13 to help break up coffee powder clumps and the electric stirrer 6 (driven by a linear guide mechanism for precise height adjustment) to achieve uniform stirring, it further enhances the consistency of coffee powder distribution. The sliding base and portafilter holder design makes it easy to place and remove the portafilter, adapting to different portafilter sizes while ensuring stirring stability. The overall structure balances air resistance elimination, stirring uniformity, and ease of operation, effectively improving the concentration and efficiency of coffee extraction, resulting in a more balanced and mellow final coffee flavor, and is suitable for both home and commercial use.

[0023] It is understood that the pressure range of this low vacuum environment is 0.001 MPa to 0.1 MPa, and the specific pressure in the coffee mixing chamber 101 can be set by those skilled in the art.

[0024] In a preferred embodiment, the linear guide mechanism includes: a vertical guide rail 16, which is arranged along the height direction of the coffee mixing chamber 101 and has a guide groove 1601; a sliding part 19, which is slidably disposed in the guide groove 1601 and connected to the electric mixer 6 via a bracket 15; a limiting block, which is slidably disposed in the guide groove 1601 below the sliding part 19; and a positioning bolt 18, which is disposed on the limiting block and used to fix the sliding limiting block to the vertical guide rail 16.

[0025] In the above embodiment, the vertical guide rail 16 is arranged along the height direction of the coffee mixing chamber 101 and has a guide groove 1601. The sliding part 19 is connected to the electric mixer 6 through the bracket 15 and can slide in the guide groove 1601. The limiting block can slide along the guide groove 1601 to the target position and then be fixed with the positioning bolt 18. By adjusting the height of the limiting block, the downward movement limit of the sliding part 19 is limited, thereby accurately controlling the depth of the mixing part of the electric mixer 6 into the coffee bowl. Its advantages are that it can flexibly adapt to coffee bowls of different depths and different amounts of coffee powder. By accurately adjusting the mixing depth, it ensures that the mixing is uniform and without dead corners. At the same time, the structure is simple and the adjustment operation is convenient. The fixing method of the positioning bolt 18 can also ensure that the sliding part 19 does not deviate during the mixing process, thus improving the mixing stability and consistency.

[0026] Preferably, an abutment piece 20 is provided on the upper side of the guide groove 1601. The abutment piece 20 is used to limit the maximum height of the sliding part 19, and a magnet block is provided at the abutment point. The sliding part 19 has a magnet part that magnetically engages with the magnet block to ensure relative stability after the abutment piece 20 and the sliding part 19 are connected.

[0027] In a preferred embodiment, the electric powder mixer 6 includes a drive motor 601 and a powder mixing needle assembly 602, with the output end of the drive motor 601 being connected to the powder mixing needle assembly 602.

[0028] In the above embodiments, the electric stirrer 6 provides stable power through the drive motor 601 and is connected to the stirring needle assembly 602, which enables the stirring needle assembly 602 to stir the coffee powder efficiently and evenly, adapting to low vacuum and plasma field environments, and further improving the consistency and thoroughness of stirring.

[0029] In a preferred embodiment, the bottom of the coffee mixing chamber 101 is provided with a guide slide 10, and the base 9 is provided with a sliding groove 17 that cooperates with the guide slide 10.

[0030] In the above embodiment, the guide slide 10 at the bottom of the coffee mixing chamber 101 and the sliding groove 17 on the base 9 form a precise fit. The core advantage is that it can provide a stable guide for the sliding of the base 9, ensuring that the base 9 can smoothly and without deviation switch between the first working position and the second working position, so that the powder bowl support 5 is precisely aligned with the mixing part of the electric mixer 6.

[0031] Optionally, the guide rail 10 and the sliding groove 17 have two sets of matching structures, which can further improve the stability of the base 9 sliding in the coffee mixing chamber 101.

[0032] In a preferred embodiment, the base 9 is further provided with a first support 7 and a second support 8, and the powder bowl support 5, the first support 7 and the second support 8 are arranged sequentially at intervals along the sliding direction of the base 9.

[0033] In the above embodiment, the first support member 7 and the second support member 8 arranged sequentially and spaced apart along the sliding direction on the base 9 can accurately support the handle of the powder bowl. The core advantage is that the two-point support provides a stable force point for the handle of the powder bowl, and avoids the powder bowl from shifting due to the handle shaking during the pushing and pulling process of the base 9 or when stirring the powder.

[0034] Preferably, both the first support member 7 and the second support member 8 are provided with grooves for placing the handle.

[0035] In a preferred embodiment, the first support member 7 includes: a fixed support portion 701, which is disposed on the base 9 and has a lifting groove formed on its top; a movable support portion 702, which is movably disposed in the lifting groove; and a locking bolt, which is disposed on the movable support portion 702 and is used to lock the movable support portion 702 to the fixed support portion 701 after the movable support portion 702 is raised or lowered.

[0036] In the above embodiment, the first support 7 is adapted to the movable support 702 that can be raised and lowered through the lifting groove of the fixed support 701, and the position after raising and lowering is locked with locking bolts. The core advantage is that the height of the movable support 702 can be flexibly adjusted to accurately adapt to the handles of different height specifications of the powder bowl.

[0037] Optionally, the vertical portion of the fixed support 701 is provided with a vertical groove 14 for the locking bolt to pass through.

[0038] In a preferred embodiment, the number of the powder bowl support 5 is at least two, the number of the electric powder mixers 6 is equal to the number of the powder bowl support 5, and each of the electric powder mixers 6 is arranged in a one-to-one correspondence with each of the powder bowl support 5.

[0039] In the above embodiments, the coffee bowl support 5 and the electric coffee mixer 6 are one-to-one and there are no fewer than two of each. The core advantage is that it can simultaneously stir multiple portions of coffee powder, which greatly improves the efficiency of batch production of espresso.

[0040] It is worth noting that multiple electric agitators 6 are connected to the same linear guide mechanism to achieve synchronous rising or falling.

[0041] As a preferred embodiment, the chassis 1 is made of transparent acrylic sheet.

[0042] In the above embodiment, the chassis 1 is made of acrylic transparent plate. Its core advantage is that it can realize the visualization of the entire powder mixing process: users can clearly observe the positioning accuracy of the powder bowl, the mixing depth and movement trajectory of the electric powder mixer 6, the effect of breaking up coffee powder clumps and the state of the plasma field, which makes it convenient to monitor the accuracy of operation and the operation of the equipment in real time, and facilitates timely adjustment of parameters or troubleshooting of abnormalities.

[0043] In a preferred embodiment, the chassis 1 is further provided with an independent mounting cavity 102, and the negative pressure generator 12 is disposed in the mounting cavity 102; the control button 2 of the negative pressure generator 12 is disposed on the outer side of the chassis 1.

[0044] In the above embodiment, the independent mounting cavity 102 can properly house and protect the negative pressure generator 12 and keep the chassis 1 clean. The adjustment button can start or stop the negative pressure generator 12.

[0045] In a preferred embodiment, a pressure gauge 11 is also provided in the mounting cavity 102, which is used to monitor the air pressure in the coffee mixing chamber 101.

[0046] In the above embodiment, the pressure gauge inside the installation cavity 102, together with the transparent glass, allows the user to intuitively observe the mixing process while monitoring the air pressure status of the coffee mixing chamber 101 in real time, ensuring that the low vacuum environment is accurately controllable and improving operational reliability.

[0047] Furthermore, unless otherwise explicitly specified or limited, the terms "installation" and "connection" in this application embodiment should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The terms "upper," "lower," "left," "right," "inner," "outer," and "side," etc., are merely for reference to the direction in the accompanying drawings or the usual placement of the product during use. They are only for clearly describing this application and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limitations on this application. The terms "first," "second," etc., are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance; "multiple" refers to at least two. In this application embodiment, the limitations on relative positional relationships such as parallel, perpendicular, and aligned are all relative to the current technological level and are not absolutely strict limitations. Slight deviations are allowed; approximations of parallel, perpendicular, and aligned are all acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 degrees and 10 degrees.

[0048] The above are only some embodiments and implementation methods of this application. The protection scope of this application is not limited thereto. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. Any combination of features in different embodiments is also within the protection scope of this application. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application.

Claims

1. A coffee mixing device for low vacuum environments, characterized in that, include: The chassis (1) has a coffee mixing chamber (101) inside and an opening communicating with the coffee mixing chamber (101) on the outside. The opening is equipped with a sealing door (4) for adjusting the opening to open or close. The coffee stirring structure includes an electric stirrer (6) and a linear guide mechanism, both of which are disposed in the coffee stirring chamber (101). The electric stirrer (6) is mounted on the linear guide mechanism and is driven by the linear guide mechanism to reciprocate along the height direction of the coffee stirring chamber (101). The coffee powder feeding structure includes a base (9) and a powder bowl support (5). The base (9) is slidably disposed at the bottom of the coffee mixing chamber (101), and the powder bowl support (5) is disposed on the base (9). The base (9) has a first working position and a second working position along the sliding trajectory. When the base (9) is in the first working position, both the coffee bowl support (5) and the base (9) are located inside the coffee mixing chamber (101), and the coffee bowl support (5) is located directly below the stirring part of the electric mixer (6). When the base (9) slides to the second working position, the base (9) drives the coffee bowl support (5) to move out of the coffee mixing chamber (101) through the opening. The pressure regulating structure includes a negative pressure generator (12) and a pressure relief valve (3). The negative pressure generator (12) is connected to the coffee mixing chamber (101) and is used to extract the gas in the coffee mixing chamber (101). The pressure relief valve (3) is installed on the coffee mixing chamber (101) and is used to control the connection between the coffee mixing chamber (101) and the external environment. as well as A plasma field generator (13) is installed in the coffee mixing chamber (101) to form a plasma field at the coffee bowl support (5) in the first working position.

2. The coffee mixing device under low vacuum environment according to claim 1, characterized in that, The linear guide mechanism includes: A vertical guide rail (16) is provided along the height direction of the coffee mixing chamber (101) and has a guide groove (1601). A sliding part (19) is slidably disposed in the guide groove (1601) and connected to the electric mixer (6) via a bracket (15); A limiting block is slidably disposed in the guide groove (1601) below the sliding part (19); A positioning bolt (18) is provided on the limiting block to fix the sliding limiting block to the vertical guide rail (16).

3. The coffee mixing device under low vacuum environment according to claim 1, characterized in that, The electric powder mixer (6) includes a drive motor (601) and a powder mixing needle assembly (602), and the output end of the drive motor (601) is connected to the powder mixing needle assembly (602) for transmission.

4. The coffee mixing device under low vacuum environment according to claim 1, characterized in that, The bottom of the coffee mixing chamber (101) is provided with a guide slide (10), and the base (9) has a sliding groove (17) that cooperates with the guide slide (10).

5. A coffee mixing device under low vacuum environment according to claim 4, characterized in that, The base (9) is also provided with a first support (7) and a second support (8), and the powder bowl support (5), the first support (7) and the second support (8) are arranged in sequence at intervals along the sliding direction of the base (9).

6. The coffee mixing device under low vacuum environment according to claim 5, characterized in that, The first support member (7) includes: A fixed support (701) is provided on the base (9) and has a lifting groove formed on its top; The movable support (702) is vertically and flexibly disposed within the lifting groove; A locking bolt is provided on the movable support (702) for locking it to the fixed support (701) after the movable support (702) is raised or lowered.

7. The coffee mixing device under low vacuum environment according to claim 1, characterized in that, The number of powder bowl supports (5) is at least two, the number of electric powder mixers (6) is equal to the number of powder bowl supports (5), and each electric powder mixer (6) is provided in a one-to-one correspondence with each powder bowl support (5).

8. A coffee mixing device under low vacuum environment according to claim 1, characterized in that, The chassis (1) is made of transparent acrylic sheet.

9. A coffee mixing device under low vacuum environment according to claim 8, characterized in that, The chassis (1) is also provided with an independent mounting cavity (102), and the negative pressure generator (12) is disposed in the mounting cavity (102); The control button (2) of the negative pressure generator (12) is located on the outer side of the chassis (1).

10. A coffee mixing device under low vacuum environment according to claim 9, characterized in that, A pressure gauge (11) is also installed in the mounting cavity (102), which is used to monitor the air pressure in the coffee mixing chamber (101).

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