A funnel for automatic de-dusting

Abstract

The utility model relates to a funnel of automatic powder removal, including the funnel seat with handle, the cavity is formed in the funnel seat, and the upper end opening and cavity intercommunication form cup slot, and the bottom of funnel seat is provided with the liquid outlet hole intercommunication cup slot, cup slot content is provided with the filter cup, and the filter cup bottom is provided with the filter mouth and the lower part intercommunication of cup slot, the push powder seat is movably arranged in the filter cup, the push powder seat bottom is equipped with a elastic part, and the elastic part has the compression form under the external force action and the reset form under the natural state, thereby making push powder seat relative filter cup have extraction position and powder removal position, the utility model has the advantages of: push powder seat and elastic part cooperate in the filter cup, and push powder seat is pressed to extraction position when extracting, and the elastic part resets after extraction, and push powder seat is pushed to rise to powder removal position, and the powder cake is separated from the filter cup inner wall, and it is not necessary to manually vibrate or scrape, and the powder cake can be directly poured and handled, and the cleaning step is reduced, and the operation convenience is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of coffee equipment, and in particular to an automatic coffee powder removal funnel. Background Technology

[0002] Currently, there are espresso machines on the market. Espresso machines work by rapidly passing a mixture of high-pressure steam and water through ground coffee powder to extract the coffee instantly. Espresso machines typically include a funnel structure with a handle.

[0003] Chinese utility model patent CN222888862U discloses a funnel structure, including a handle, a funnel, and a filter cup assembly. One end of the handle is fixedly connected to the funnel, and a first inner cavity is formed inside the funnel. The filter cup assembly is detachably installed in the first inner cavity. A spray hole is provided at the bottom of the filter cup assembly. A protrusion is provided on the bottom plate of the first inner cavity, and a milk foaming plate is provided on the protrusion, with the milk foaming plate corresponding to the spray hole. This configuration, with the protrusion on the bottom plate of the first inner cavity and the milk foaming plate on the protrusion, allows coffee to spray out from the spray hole of the filter cup assembly. The coffee sprays onto the milk foaming plate, and the impact generates more foam, thus achieving the function of frothing the coffee.

[0004] However, during the use of a coffee machine, the high temperature and pressure of hot water impacts the coffee grounds in the funnel, causing them to form a solid coffee puck. After extraction, the coffee puck needs to be emptied from the funnel for cleaning. However, after being impacted by the water pressure, the coffee puck adheres to the inner wall of the funnel, requiring considerable vibration to remove it, making cleaning inconvenient. Utility Model Content

[0005] In order to solve the above-mentioned problems in the prior art, the present invention provides an automatic powder removal funnel.

[0006] The above-mentioned problems of this utility model are solved by the following technical solution: An automatic powder removal funnel includes a funnel base with a handle, a cavity formed inside the funnel base, and an upper opening communicating with the cavity to form a cup groove. A liquid outlet hole is provided at the bottom of the funnel base communicating with the cup groove. A filter cup is placed inside the cup groove, and a filter port is provided at the bottom of the filter cup communicating with the lower part of the cup groove. A powder-pushing seat is movably disposed inside the filter cup, and the powder-pushing seat and the inner wall of the cup groove are sealed together. The bottom of the powder pusher is provided with an elastic element, which has a compression state under external force and a reset state in its natural state, so that the powder pusher has an extraction position and a powder removal position relative to the filter cup.

[0007] A further provision of the above technical solution is that the elastic element is a holding spring, and the upper end of the holding spring abuts against the bottom of the powder pusher.

[0008] A further provision of the above technical solution is that the bottom of the filter cup is provided with an avoidance hole, the elastic element passes through the avoidance hole, and its lower end abuts against the bottom of the cup groove.

[0009] A further provision of the above technical solution is that: a spring column extends from the lower end of the powder-pushing seat, and a positioning groove is provided at the bottom of the cup groove to constrain the elastic element.

[0010] By adopting the above technical solution, the spring column at the bottom of the powder pusher and the positioning groove at the bottom of the cup groove cooperate with the elastic element to constrain the elastic element to move only along the axial direction, avoid radial displacement, and ensure stable lifting and lowering of the powder pusher.

[0011] A further provision of the above technical solution is that four elastic elements, four spring pillars, and four positioning grooves are provided.

[0012] By adopting the above technical solution, the four sets of elastic elements, spring columns and positioning grooves are arranged in a centrally symmetrical manner to evenly distribute the force, prevent the powder pusher from tilting and ensure that the powder cake is detached as a whole.

[0013] A further provision of the above technical solution is that the filter cup is provided with a powder removal area and an extraction area along the axial direction, the powder removal area is connected to the upper end of the extraction area, and the powder removal area is provided with a constricted structure along the axial direction downward.

[0014] By adopting the above technical solution, the powder removal area of ​​the filter cup adopts a narrowing structure. When the powder pusher rises, a gap is formed between the outer periphery of the powder cake and the inner wall of the filter cup, which further breaks the adhesion between the powder cake and the inner wall and improves the thoroughness of powder removal.

[0015] A further provision of the above technical solution is that the powder-pushing seat includes a seat body and a filter screen embedded in the seat body, and a filter cavity is provided between the seat body and the filter screen; A sealing ring is provided on the circumference of the base to ensure a sealed fit between the powder pusher and the extraction area of ​​the filter cup.

[0016] By adopting the above technical solution, the sealing ring on the periphery of the powder pusher fits tightly with the extraction area of ​​the filter cup, preventing hot water leakage during extraction; when removing powder, the powder pusher rises to the powder removal area, and the sealing ring disengages from the sealing surface, without affecting the removal of the powder cake.

[0017] A further provision of the above technical solution is that: a liquid outlet pipe extends from the lower end surface of the seat, and the lumen of the liquid outlet pipe is connected to the filter chamber; The filter cup has its filter opening located below the liquid outlet tube.

[0018] A further provision of the above technical solution is that a guide plate is provided at the bottom of the filter cup at the edge of the filter port, the guide plate is directed toward the inner wall of the filter seat, and a liquid guiding gap is formed between the guide plate and the filter seat.

[0019] By adopting the above technical solutions, the filter screen and filter chamber design of the coffee dispenser ensure that the extract is fully filtered; the liquid outlet pipe is precisely connected to the filter cup, and with the bottom guide plate and liquid guide gap, coffee liquid splashing is avoided, ensuring stable liquid output and no residue.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: the powder pusher seat inside the filter cup cooperates with the elastic element. During extraction, the powder pusher seat is pressed to the extraction position. After extraction, the elastic element is reset and pushes the powder pusher seat to the powder removal position, causing the powder cake to separate from the inner wall of the filter cup. There is no need for manual vibration or scraping. The powder cake can be directly poured out, reducing cleaning steps and improving the convenience of operation. Attached Figure Description

[0021] Figure 1 This is an exploded structural diagram of the present invention.

[0022] Figure 2 This is a cross-sectional structural diagram of the present invention in the extraction mode.

[0023] Figure 3 This is an isometric sectional view of the filter cup.

[0024] Figure 4 This is an isometric sectional view of the powder pusher.

[0025] Figure 5 This is an isometric sectional view of the funnel seat.

[0026] Figure 6 This is a schematic cross-sectional view of the present invention in the de-powdering mode.

[0027] The attached diagram is labeled as follows: 100, funnel seat; 101, liquid outlet; 102, positioning groove; 110, baffle; 120, baffle plate; 130, handle; 200. Filter cup; 201. Filter port; 202. Cup groove; 203. Clearance hole; 202.1. Main body area; 202.2. De-powdering area; 202.3. Extraction area; 210. Baffle plate; 211. Liquid guide channel; 300. Powder pusher; 310. Spring post; 301. Filter chamber; 320. Seat body; 330. Filter screen; 321. Liquid outlet pipe; 1. Supporting spring; 2. Sealing ring. Detailed Implementation

[0028] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0029] like Figure 1-6 As shown in the figure, this embodiment discloses an automatic powder removal funnel.

[0030] An automatic powder removal funnel includes a funnel base 100 with a handle 130. The funnel base 100 has a cavity, and its upper opening communicates with the cavity to form a cup groove 202. The bottom of the funnel base 100 has a liquid outlet hole 101 communicating with the cup groove 202. The cup groove 202 contains a filter cup 200, and the bottom of the filter cup 200 has a filter port 201 communicating with the lower part of the cup groove 202. A powder-pushing seat 300 is movably disposed inside the filter cup 200, and the powder-pushing seat 300 and the inner wall of the cup groove 202 are sealed together. The bottom of the powder pusher 300 is provided with an elastic element, which has a compression state under external force and a reset state in its natural state, so that the powder pusher 300 has an extraction position and a powder removal position relative to the filter cup 200.

[0031] The above is the basic scheme of this embodiment.

[0032] Reference Figure 1 and Figure 2 As shown, the funnel holder 100 has a cup-shaped structure with an opening at the top, from which a cup groove 202 extends downwards. The shape of the filter cup 200 matches that of the cup groove 202. A liquid outlet 101 is provided at the bottom of the cup groove 202. The filter cup 200 is used to hold coffee powder and to output the extracted coffee liquid through the filter outlet 201 at the bottom of the filter cup 200 into the cup groove 202, and then through the liquid outlet 101 at the bottom of the cup groove 202 into the coffee cup.

[0033] In practical use, the ground coffee powder is first evenly poured into the filter cup 200, where it naturally accumulates on the surface of the tamper 300 under gravity. Appropriate pressure is applied to the coffee powder using the tamper head on the coffee machine, causing it to form a moderately compacted coffee puck within the filter cup 200. When extraction begins, high-temperature, high-pressure hot water generated by the coffee machine is injected into the filter cup 200 from the top inlet, fully saturating the coffee puck and completing the extraction process. The extracted coffee liquid enters the filter cup 200 through the fine mesh of the tamper 300, and finally flows into a pre-placed container through the filter outlet 201 at the bottom of the filter cup 200 and the outlet hole 101 at the bottom of the funnel base 100.

[0034] The feeder 300 is located at the bottom of the filter cup 200 and can move linearly along the axis L of the filter cup 200. During coffee extraction, the coffee powder and the tamper inside the coffee machine press the feeder 300 towards the bottom of the filter cup 200, driving the feeder 300 to the extraction position, which is close to the bottom of the filter cup 200. At this time, the elastic element is in a compressed state.

[0035] After extraction, the pressing head retracts from the filter cup 200. At this point, the weight of the powder cake is not enough to overcome the restoring force of the elastic element. The elastic element returns to its original position, pushing the powder pusher 300 upwards, causing the powder cake on the powder pusher 300 to move synchronously relative to the filter cup 200. During this process, relative friction occurs between the outer periphery of the powder cake and the inner wall of the filter cup 200. This relative movement effectively breaks the tightness of the adhesion between the outer periphery of the powder cake and the filter cup 200, causing the powder cake to separate from the inner wall of the filter cup 200. The user only needs to flip the entire funnel to dispose of the powder cake.

[0036] It should be noted that in this embodiment, when the coffee extraction is completed, the tamper head automatically detaches from the funnel, and the elastic element simultaneously pushes out the coffee pouch. In other words, when the coffee machine indicates that the coffee is ready, the user can remove the funnel and process the coffee pouch without any additional operations, saving operation steps and making the cleaning process more user-friendly and convenient.

[0037] Preferably, in this embodiment, the elastic element is a holding spring 1, and the upper end of the holding spring 1 abuts against the bottom of the powder pusher 300.

[0038] In this embodiment, the upper end of the top-holding spring 1 maintains close contact with the bottom of the powder-pushing seat 300, applying a continuous upward supporting force to the powder-pushing seat 300 through its elastic properties. During coffee making, when the tamping head applies vertical downward pressure to the coffee powder in the filter cup 200, this force is transmitted to the top-holding spring 1 through the powder-pushing seat 300. As the pressure increases, the powder-pushing seat 300 gradually moves downward, simultaneously forcing the top-holding spring 1 to undergo elastic deformation. The spring's helical structure is gradually compressed, storing elastic potential energy. This mechanical linkage process ensures that the coffee powder receives uniform and stable pressure during tamping, and also provides the necessary conditions for the subsequent spring return and reset.

[0039] In this embodiment, the bottom of the filter cup 200 is provided with a clearance hole 203, and the elastic member passes through the clearance hole 203, with its lower end abutting against the bottom of the cup groove 202.

[0040] Reference Figure 2 and Figure 3As shown, the bottom of the filter cup 200 has a clearance hole 203, the diameter of which is large enough to accommodate the passage of the top-holding spring 1. The top-holding spring 1 passes vertically through the clearance hole 203 from above, maintaining an appropriate gap with the hole wall during passage to ensure smooth and unobstructed movement. The lower end of the top-holding spring 1 is specially treated to contact the bottom of the cup groove 202, so that the force can be evenly distributed when compressed. This design allows the elastic element to provide stable elastic support when the filter cup 200 moves up and down, while ensuring that the contact with the bottom of the cup groove 202 remains tight and reliable at all times.

[0041] In order to constrain the displacement of the elastic element and prevent it from moving radially, in this embodiment, the lower end of the powder pusher 300 extends with a spring post 310, and the bottom of the cup groove 202 is provided with a positioning groove 102 that can constrain the elastic element.

[0042] Specific reference Figure 4 and Figure 5 As shown, a ring-shaped retaining rib 110 protrudes upwards from the central area of ​​the bottom of the cup groove 202. This retaining rib 110 extends continuously along the circumference, thus forming a complete circular positioning groove 102 inside the cup groove 202. The positioning groove 102 can stably accommodate the lower end of the supporting spring 1, achieving a reliable limiting function. A cylindrical spring post 310 extends vertically downwards from the bottom of the powder pusher 300. The central axis of the spring post 310 coincides with the central axis of the positioning groove 102, ensuring alignment during assembly. The main body of the supporting spring 1 is sleeved on the spring post 310. The upper end of the spring remains in contact with the bottom of the powder pusher 300, while the lower end is firmly embedded in the positioning groove 102. This structural design achieves an elastic connection between the powder pusher 300 and the cup groove 202. Through the coordinated action of the spring column 310 and the positioning groove 102, the top holding spring 1 is completely limited, so that the top holding spring 1 can only deform in the axial direction and cannot make radial displacement, thus ensuring the stability and accuracy of the powder pushing mechanism.

[0043] Preferably, to ensure the stability of the ejection action, in this embodiment, four elastic elements, four spring posts 310, and four positioning grooves 102 are provided.

[0044] The elastic elements are arranged symmetrically at the bottom of the powder pusher 300.

[0045] In this embodiment, the filter cup 200 is provided with a powder removal area 202.2 and an extraction area 202.3 along the axial direction. The powder removal area 202.2 is connected to the upper end of the extraction area 202.3, and the powder removal area 202.2 is configured with a constricted structure along the axial direction downward.

[0046] Specific reference Figure 2 and Figure 6As shown, to accommodate the switching between extraction and de-powdering modes, the filter cup 200 in this embodiment adopts a special three-section structural design. Specifically, starting from the top opening side, the filter cup 200 is divided into three functional areas along the central axis L: the main area 202.1, the de-powdering area 202.2, and the extraction area 202.3. The de-powdering area 202.2 is located directly above the extraction area 202.3. Furthermore, the de-powdering area 202.2 employs a constricted design along the axis L, meaning its lower inner diameter is significantly smaller than its upper inner diameter, forming a gradually narrowing conical transition section. The direct effect of this structural design is that, since the extraction area 202.3 is directly connected to the lower opening of the de-powdering area 202.2, the overall inner diameter of the extraction area 202.3 is necessarily smaller than the inner diameter of the upper opening of the de-powdering area 202.2. This dimensional difference creates the necessary conditions for subsequent de-powdering operations.

[0047] When the device is in extraction mode, the powder pusher 300 moves down to the extraction zone 202.3 under the action of the powder pressing head. At this time, a tight seal is formed between the outer surface of the powder pusher 300 and the inner wall of the filter cup 200, ensuring that no liquid leakage occurs during extraction. When switching to the powder removal mode, the powder pusher 300 rises to the powder removal zone 202.2 under the action of the top holding spring 1. Due to the larger inner diameter of the upper end of the powder removal zone 202.2, a certain annular gap is naturally formed between the outer circumference of the powder pusher 300 and the inner wall of the filter cup 200. The existence of this gap allows the powder cake that was originally tightly attached to the inner wall of the filter cup 200 to be easily removed, thereby achieving a fast and thorough cleaning effect. This ingenious structural design ensures both sealing during extraction and convenience during powder removal.

[0048] In this embodiment, to prevent hot water from wetting the elastic element and causing it to fail, the powder pusher 300 includes a seat 320 and a filter screen 330 embedded in the seat 320, and a filter cavity 301 is provided between the seat 320 and the filter screen 330. A sealing ring 2 is provided on the circumferential surface of the seat 320 to ensure a sealed fit between the powder pusher seat 300 and the extraction area 202.3 of the filter cup 200.

[0049] Specific reference Figure 2 and Figure 6As shown, the base 320 adopts a flat cylindrical structure with an annular sealing groove on its circumferential surface. The sealing groove has a U-shaped cross-section, which can stably accommodate the sealing ring 2. The sealing ring 2 is made of highly elastic silicone material. After installation, its outer diameter is slightly larger than the outer diameter of the base 320, so it will naturally protrude from the circumferential surface of the base 320. When the powder pusher 300 is placed into the extraction area 202.3 of the filter cup 200, the sealing ring 2 and the inner wall of the filter cup 200 make tight elastic contact, forming a uniform radial compression force between them. This compression causes the sealing ring 2 to undergo moderate deformation, thereby establishing a reliable sealing connection between the powder pusher 300 and the filter cup 200.

[0050] When hot water is injected into the filter cup 200, due to the effective barrier of the peripheral sealing structure, the hot water cannot seep out from the contact surface between the feeder 300 and the filter cup 200, and can only be forced downward through the coffee puck layer above the feeder 300. During this process, the hot water fully extracts the effective components in the coffee powder, and the resulting extract then passes through the filter screen 330 on the feeder 300, enters the filter chamber 301 space below through multiple evenly distributed filter holes on the filter screen 330, and finally flows out stably from the outlet at the bottom of the filter chamber 301.

[0051] In this embodiment, to avoid splashing of coffee liquid, a liquid outlet pipe 321 extends from the lower end surface of the seat 320, and the lumen of the liquid outlet pipe 321 is connected to the filter chamber 301; The filter port 201 of the filter cup 200 is located below the liquid outlet pipe 321.

[0052] Specific reference Figure 2 The filter chambers 301 are evenly distributed across the horizontal surface of the entire filter holder. The outlet pipe 321 is located at the bottom of the filter holder, and to optimize the liquid flow path, it is preferably positioned near the edge of the bottom of the filter holder. This ensures that the extracted coffee liquid inside the filter chambers 301 can only be discharged through a single outlet channel—the outlet pipe 321—thus guaranteeing the concentration and controllability of the liquid flow. Furthermore, the inlet of the outlet pipe 321 is positioned directly above the filter opening 201, allowing the coffee liquid flowing from the outlet pipe 321 to directly and smoothly enter the filter opening 201, minimizing the risk of coffee liquid overflowing into other parts of the filter cup 200 and ensuring the cleanliness and efficiency of the entire extraction process. This structural design not only improves the accuracy of coffee making but also greatly enhances the convenience and safety during use.

[0053] Meanwhile, a guide plate 210 is provided at the bottom of the filter cup 200 at the edge of the filter port 201. The guide plate 210 is directed toward the inner wall of the filter seat and forms a liquid guiding gap with the filter seat.

[0054] The guide plate 210 is an inclined plate formed on the bottom of the filter cup 200, and the two sides of the inclined plate are connected to the bottom of the filter cup 200, thereby forming an inclined liquid guiding channel 211. The extract output from the filter port 201 can only be output along the inclined liquid guiding channel 211.

[0055] Furthermore, a baffle 120 is formed inside the filter seat. This baffle 120 is located at the end outlet side of the liquid guiding channel 211, maintaining a certain distance from the inner wall of the liquid guiding channel 211, thus forming a liquid guiding gap. When the extractant is conveyed forward along the liquid guiding channel 211 under pressure, it will directly impact the blocking surface of the baffle 120 at the end of the channel. The baffle 120 effectively buffers and stops the high-speed flowing extractant, significantly reducing the flow velocity of the extractant. At the same time, the design of the baffle 120 causes the flow direction of the extractant to change, forcing the liquid to change its original horizontal flow path and instead pass through the liquid guiding gap formed between the baffle 120 and the channel wall, stabilizing the liquid flow in a vertically downward direction. This design achieves both flow rate control and ensures precise guidance of the liquid flow direction, allowing the extractant to stably enter the bottom of the funnel seat 100 and thus exit from the liquid outlet 101.

[0056] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An automatic powder removal funnel, comprising a funnel seat (100) having a handle (130), wherein a cavity is formed in the funnel seat (100), and an upper opening communicating with the cavity to form a cup groove (202), wherein a liquid outlet hole (101) is provided at the bottom of the funnel seat (100) communicating with the cup groove (202); a filter cup (200) is placed inside the cup groove (202), and a filter port (201) is provided at the bottom of the filter cup (200) communicating with the lower part of the cup groove (202); Its features are: A powder-pushing seat (300) is movably disposed inside the filter cup (200), and the powder-pushing seat (300) and the inner wall of the cup groove (202) are sealed together. The bottom of the powder pusher (300) is provided with an elastic element, which has a compression state under external force and a reset state in its natural state, so that the powder pusher (300) has an extraction position and a powder removal position relative to the filter cup (200).

2. The automatic powder removal funnel according to claim 1, characterized in that: The elastic element is a holding spring (1), the upper end of which abuts against the bottom of the powder pusher (300).

3. The automatic powder removal funnel according to claim 1 or 2, characterized in that: The bottom of the filter cup (200) is provided with a clearance hole (203), and the elastic element passes through the clearance hole (203) and its lower end abuts against the bottom of the cup groove (202).

4. The automatic powder removal funnel according to claim 3, characterized in that: The lower end of the powder pusher (300) extends a spring post (310), and the bottom of the cup groove (202) is provided with a positioning groove (102) that can constrain the elastic element.

5. The automatic powder removal funnel according to claim 4, characterized in that: The elastic element, spring post (310), and positioning groove (102) are each provided in four parts.

6. The automatic powder removal funnel according to claim 1, characterized in that: The filter cup (200) is provided with a powder removal area (202.2) and an extraction area (202.3) along the axial direction. The powder removal area (202.2) is connected to the upper end of the extraction area (202.3), and the powder removal area (202.2) is provided with a constricted structure along the axial direction downward.

7. The automatic powder removal funnel according to claim 6, characterized in that: The powder pushing seat (300) includes a seat body (320) and a filter screen (330) embedded in the seat body (320), and a filter cavity (301) is provided between the seat body (320) and the filter screen (330); A sealing ring (2) is provided on the circumferential surface of the seat (320) to ensure a sealed fit between the powder pusher seat (300) and the extraction area (202.3) of the filter cup (200).

8. The automatic powder removal funnel according to claim 7, characterized in that: A liquid outlet pipe (321) extends from the lower end face of the seat (320), and the lumen of the liquid outlet pipe (321) is connected to the filter chamber (301); The filter port (201) of the filter cup (200) is located below the liquid outlet pipe (321).

9. The automatic powder removal funnel according to claim 8, characterized in that: The bottom of the filter cup (200) is provided with a guide plate (210) at the edge of the filter port (201). The guide plate (210) is directed toward the inner wall of the filter seat and forms a liquid guiding gap with the filter seat.

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