A spout structure of a coffee hand-pouring pot and a hand-pouring pot

Abstract

The utility model discloses a kind of spout structure and hand-pouring pot of coffee hand-pouring pot, spout structure includes integrally-formed and sequentially connected connecting pipe section, extension pipe section and curved pipe section;Extension pipe section extends along vertical direction to the direction of side away from connecting pipe section;Curved pipe section is curved along horizontal direction to the direction of side away from connecting pipe section;The inner diameter of the flow passage inner wall of curved pipe section gradually contracts to form neck-in structure in the direction of water outlet nozzle, the inner surface of neck-in structure constitutes conical flow guide section, the inner diameter size of conical flow guide section continuously and uniformly reduces. By designing integrally-formed spout structure, wherein extension pipe section vertically extends to stabilize water flow path, curved pipe section is horizontally curved to realize inner diameter gradually reducing with neck-in structure, effectively suppresses water flow dispersion and intermittent phenomenon, ensure that water flow is concentrated, continuous and direction consistent, with the advantages that water is in the form of concentric cylinder, water does not scatter, water flow accelerates and pressurizes, water is powerful, water is not broken, water flow direction is consistent.

Description

Technical Field

[0001] This utility model relates to the field of coffee equipment technology, and in particular to a spout structure and a pour-over coffee kettle. Background Technology

[0002] In pour-over coffee preparation, the speed, flow rate, and shape of the water flow are key factors affecting the quality of coffee extraction. An ideal water flow should be stable, continuous, and concentrated to ensure that hot water evenly wets the coffee grounds, achieving full and consistent extraction. Traditional pour-over kettle spout designs often focus on smooth water flow, but in practical use, especially by inexperienced operators, several noticeable shortcomings remain.

[0003] Firstly, common spouts, when used for slow pouring or low-flow operation, are prone to causing the water flow to scatter or stop dripping due to insufficient surface tension and inner wall guidance, resulting in a "scattered flower" phenomenon. This unstable water flow can impact localized areas of the coffee grounds, damaging the grounds structure and causing uneven extraction. This results in a thin coffee flavor profile or defects such as over-extraction and under-extraction.

[0004] Secondly, many spout designs struggle to achieve precise, linear water flow control. Users adjust the water flow by tilting the spout and applying pressure, but this adjustment is often non-linear. This significantly increases the difficulty of control when extremely low speeds or flow rates are required for precise brewing (such as fractional extraction). Fluctuations in water flow directly lead to uncontrolled brewing parameters, poor repeatability, and an inability to consistently reproduce the desired flavor.

[0005] Furthermore, some spouts are designed to be quite wide in order to achieve a large flow rate. While this is suitable for rapid pouring, it often makes it difficult to form a sufficiently cohesive water column in scenarios requiring gentle pouring. An excessively large surface area between the water and air accelerates heat loss, affecting the stability of the brewing water temperature and consequently impacting extraction efficiency.

[0006] Therefore, existing pour-over kettle spouts still have room for improvement in terms of precise water flow control, stability, and adaptability to different brewing techniques. Especially for coffee enthusiasts and professionals who seek consistent extraction and flavor details, there is an urgent need for a spout structure that can fundamentally optimize the physical properties of water flow, achieving more precise, stable, and easily controllable water output. Utility Model Content

[0007] In response to the problems raised in the background art, the purpose of this utility model is to provide a spout structure and a pour-over coffee kettle to solve the problem of uneven coffee extraction caused by water flow dispersion and drip interruption during the pouring process.

[0008] To achieve this objective, the present invention adopts the following technical solution: A spout structure for a pour-over coffee maker includes a connecting pipe section, an extension pipe section, and a curved pipe section, wherein the connecting pipe section, the extension pipe section, and the curved pipe section are integrally formed. One end of the connecting pipe section is connected to the body of the pour-over kettle, the other end of the connecting pipe section is connected to one end of the extension pipe section, the other end of the extension pipe section is connected to one end of the curved pipe section, and the other end of the curved pipe section is the spout. The extension pipe section extends vertically in a direction away from the connecting pipe section; The curved pipe section bends horizontally toward the side away from the connecting pipe section; The inner diameter of the inner wall of the flow channel of the curved pipe section gradually narrows towards the water outlet to form a constriction structure. The inner surface of the constriction structure forms a conical guide section. The inner diameter of the conical guide section decreases continuously and uniformly from the starting position to the water outlet.

[0009] Preferably, the conical guide section forms a cone angle θ at the water outlet, wherein 5°≤θ≤15°.

[0010] Preferably, the outer edge of the water outlet is a flat annular plane.

[0011] Preferably, the angle between the plane containing the annular plane and the horizontal plane is α, where 65°≤α≤80°.

[0012] Preferably, the maximum inner diameter of the curved pipe section is D, the inner diameter of the water outlet is d, and the inner diameter of the curved pipe section gradually decreases from D to d, where D = 8.4 mm and d = 4.6 mm.

[0013] A pour-over kettle includes a body, a lid, a handle, and a spout structure as described above for a pour-over coffee kettle; The top opening of the kettle body, and the kettle lid covering the top opening of the kettle body; The spout structure is provided at the lower front part of the body of the kettle; The handle is located at the upper rear end of the kettle body.

[0014] Preferably, the height of the connection between the spout structure and the body of the kettle is h, and the height of the body of the kettle is H, where h = (1 / 2 - 1 / 3)H.

[0015] Preferably, the connecting pipe section of the spout structure is welded to the kettle body.

[0016] Preferably, the height of the spout of the spout structure is higher than the height of the kettle body.

[0017] Compared with the prior art, one of the above technical solutions has the following beneficial effects: By designing an integrated spout structure, the extended pipe section extends vertically to stabilize the water flow path, while the curved pipe section bends horizontally in conjunction with the constriction structure to achieve a gradual reduction in the inner diameter. This effectively suppresses water flow dispersion and discontinuity, ensuring that the water flow is concentrated, continuous, and consistent in direction. It has the advantages of producing concentric cylindrical water flow, preventing water from scattering, accelerating and pressurizing the water flow, providing powerful water flow, ensuring continuous water flow, and maintaining a consistent water flow direction. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the pour-over kettle of this utility model; Figure 2 This is a schematic diagram of one embodiment of the spout structure of this utility model; Figure 3 This is a schematic diagram of one embodiment of the spout structure of this utility model; Figure 4 yes Figure 2 A cross-sectional view.

[0019] The components include: spout structure 10, connecting pipe section 11, extension pipe section 12, curved pipe section 13, water outlet 14, annular plane 140, constriction structure 15, kettle body 20, kettle lid 30, and handle 40. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," and "third" may explicitly or implicitly include one or more of that feature.

[0023] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] The following is in conjunction with the appendix Figures 1 to 4 The technical solution of this utility model will be further illustrated through specific implementation methods.

[0025] A spout structure for a pour-over coffee maker includes a connecting pipe section 11, an extension pipe section 12, and a curved pipe section 13, wherein the connecting pipe section 11, the extension pipe section 12, and the curved pipe section 13 are integrally formed. One end of the connecting pipe section 11 is connected to the body 20 of the pour-over kettle, the other end of the connecting pipe section 11 is connected to one end of the extension pipe section 12, the other end of the extension pipe section 12 is connected to one end of the curved pipe section 13, and the other end of the curved pipe section 13 is the spout 14. The extension pipe section 12 extends vertically in a direction away from the connecting pipe section 11; The curved pipe section 13 bends horizontally toward the side away from the connecting pipe section 11; The inner diameter of the inner wall of the flow channel of the curved pipe section 13 gradually narrows towards the outlet 14 to form a constriction structure 15. The inner surface of the constriction structure 15 forms a conical guide section. The inner diameter of the conical guide section decreases continuously and uniformly from the starting position to the outlet 14.

[0026] This invention provides a spout structure for a pour-over coffee maker. The spout structure 10 consists of a connecting pipe section 11, an extension pipe section 12, and a curved pipe section 13, which are integrally formed. One end of the connecting pipe section 11 is connected to the body 20 of the pour-over coffee maker, and the other end is connected to one end of the extension pipe section 12. The other end of the extension pipe section 12 is connected to one end of the curved pipe section 13, and the other end of the curved pipe section 13 is designed as the spout 14. The extension pipe section 12 extends vertically away from the connecting pipe section 11, thereby guiding the water flow vertically and reducing the impact of lateral disturbances on the water flow pattern. Furthermore, the curved pipe section 13 bends horizontally away from the connecting pipe section 11, allowing the water flow to smoothly change direction as it approaches the spout 14, while maintaining a concentrated water flow. Specifically, the inner diameter of the inner wall of the curved pipe section 13 gradually narrows towards the spout 14, forming a constriction structure 15. By designing the inner surface of the constriction structure 15 as a conical guide section, the water flow velocity gradually increases from the starting position to the outlet 14, avoiding problems such as sudden pressure changes and uneven acceleration. The introduction of the conical guide section optimizes the flow characteristics of the water within the spout, fundamentally solving the technical problem of unstable water flow. Furthermore, the conical guide section of the constriction structure 15 accelerates and pressurizes the water flow, ensuring that the water flows out in a concentric cylindrical shape at the outlet 14, preventing water flow divergence or drip interruption.

[0027] The aforementioned technical solution eliminates connection gaps between pipe sections through integrated design, reducing the risk of turbulence and leakage during water transmission, thereby maintaining the continuity of water flow. The vertical extension characteristic of the extended pipe section 12 provides initial stability for the water flow, while the horizontal bending characteristic of the curved pipe section 13 enables controllable adjustment of the water flow direction. In addition, the constriction structure 15 further enhances the kinetic energy of the water flow by accelerating and pressurizing it, keeping the water flow concentrated and stable at the spout 14. These features work together to solve the problem of uneven coffee extraction caused by water flow dispersion or interruption during pouring in a pouring kettle, achieving a consistent water flow direction, continuous water flow, and no water frothing.

[0028] Furthermore, the characteristic is that: the conical guide section forms a cone angle θ at the water outlet 14, wherein 5°≤θ≤15°.

[0029] The cone angle θ is the angle formed on the inner surface of the conical guide section during the narrowing process. The range of the cone angle θ is set to ensure that the water flow can achieve smooth and controllable acceleration when passing through the conical guide section. The selection of this angle range aims to avoid insufficient acceleration of the water flow due to an angle that is too small, which may cause scattering or interruption of water flow. At the same time, it also prevents turbulence caused by an angle that is too large from interfering with the columnar shape of the water flow, thereby improving the continuity and consistency of the water flow.

[0030] The conical guide section controls the cone angle θ between 5° and 15°, ensuring that the water flow along the contraction path of the inner wall is neither slowed down due to an excessively small angle nor causes a sudden change in flow velocity due to an excessively large angle. This design ensures that the water flow maintains a uniform concentric cylindrical stream at the outlet 14, with the outflowing water column having a consistent direction and height and not easily spreading out.

[0031] Furthermore, the outer edge end face of the water outlet 14 is a flat annular plane 140.

[0032] The design of the annular plane 140 aims to eliminate water flow disturbance caused by the microscopic irregularities of the traditional spout end face, thereby ensuring that the water flow is evenly distributed and flows out synchronously at the outlet. By designing the outer edge end face of the spout 14 as a flat annular plane 140, the physical characteristics of the water outlet are significantly optimized. This allows the water flow to be evenly distributed across the outlet cross-section, avoiding uneven flow velocity and energy dissipation caused by local resistance differences. The geometry of the annular plane 140 provides a symmetrical and continuous constraint boundary, guiding the water flow to form a stable cylindrical water column, maintaining the continuity of the water flow, especially during low-flow operation. In addition, this design forms a good working relationship with the constriction structure 15. Through precise control of the end face shape, the contact disturbance between the water flow and air is reduced, thereby ensuring the concentration, stability, and controllability of the water flow during the brewing process.

[0033] Furthermore, the angle between the plane containing the annular plane 140 and the horizontal plane is α, where 65°≤α≤80°.

[0034] The angle α between the annular plane 140° and the horizontal plane directly affects the initial outflow direction and stability of the water flow. When the kettle is tilted to pour water, this angle range allows the water flow to achieve a balance between surface tension and gravity, thus maintaining a stable water column shape. In addition, this specific angle design reduces the requirements for the user's tilting angle, achieving uniform water flow at a smaller kettle tilt angle, thus improving ease of operation.

[0035] Furthermore, the maximum inner diameter of the curved pipe section 13 is D, the inner diameter of the water outlet 14 is d, and the inner diameter of the curved pipe section 13 gradually decreases from D to d, where D = 8.4 mm and d = 4.6 mm.

[0036] The curved pipe section 13 refers to the curved portion connecting the extension pipe section 12 and the spout 14. Its maximum inner diameter D is set to 8.4 mm. This size provides a suitable initial water flow capacity, avoids excessive internal resistance within the kettle body, and establishes a reasonable flow basis for the constriction process. The inner diameter d of the spout 14 is set to 4.6 mm. This smaller size forms an effective constraint at the constriction end, prompting the water flow to accelerate and maintain a concentrated state.

[0037] Specifically, the inner diameter of the curved pipe section 13 gradually decreases from D to d. This continuous and uniform shrinkage process, combined with the specific dimensions of D=8.4mm and d=4.6mm, optimizes the water flow transition path and reduces turbulence and energy loss. When the water flows from the kettle body through the connecting pipe section 11 and the extension pipe section 12 into the curved pipe section 13, this precisely designed tapering structure enables the water flow to achieve stable acceleration and concentrated output during the narrowing process. Especially during low-flow operation, this design ensures that the water flow remains continuous and columnar, effectively solving the problems of water flow dispersion and drip interruption.

[0038] A pour-over kettle includes a body 20, a lid 30, a handle 40, and a spout structure 10 as described above for a pour-over coffee kettle; The top opening of the kettle body 20 is covered by the lid 30. The spout structure 10 is provided at the lower front end of the body 20; The handle 40 is provided at the upper rear end of the kettle body 20.

[0039] By rationally arranging the spout structure 10 with the body 20, lid 30 and handle 40, and combining the integrated design of the spout structure 10 with the optimization of the flow channel, the problems of unstable water flow, scattering, and interrupted dripping in the pouring process of hand-drip kettles are solved.

[0040] Furthermore, the height at the connection between the spout structure 10 and the body 20 is h, and the height of the body 20 is H, where h = (1 / 2 - 1 / 3)H.

[0041] The connection point of the spout structure 10 is located in the lower half of the pot body 20 (approximately 1 / 2 to 1 / 3 of its height), scientifically matching the liquid level height for common pouring capacities in pouring coffee. Within this proportional range, the working water level inside the pot (usually above the connection point) provides a moderate and stable static pressure head to the spout outlet. This avoids the drawbacks of a connection point that is too high (resulting in a sudden drop in water pressure when the pot is low, leading to weak water flow or interruption) or a connection point that is too low (resulting in excessive water pressure when the pot is full, leading to excessively fast flow rate and difficulty in precise control). Combined with the constriction structure 15 of the spout structure, the water flow can obtain a relatively stable driving pressure across a wide range of water volumes inside the pot, allowing users to adjust the water flow more linearly, precisely, and predictably through the tilt angle of the pot body.

[0042] Furthermore, this connection height, together with the handle 40 located at the upper rear end of the kettle body 20, forms a mechanical system that better conforms to the lever principle. When the handle 40 is pressed down to tilt the kettle, the spout structure 10 connection point, as one of the main fluid outlets and force fulcrums, is located in the lower half of the kettle body, making the relative position of the kettle's center of gravity and the water outlet more reasonable. This not only makes the tilting action less strenuous, but more importantly, it reduces the non-linear relationship between wrist force and the kettle body rotation angle, allowing users to more delicately perceive and control the tilting speed and amplitude, thereby transforming the spout's own steady flow performance into an intuitive and stable practical experience.

[0043] Furthermore, the connecting pipe section 11 of the spout structure is welded to the kettle body 20.

[0044] The connecting pipe section 11 is welded to the kettle body 20 into a single structure, creating a metallurgically integrated connection. This connection effectively addresses the dynamic stresses generated during use by the pour-over kettle due to thermal expansion and contraction, operational vibrations, or prolonged tilting during pouring. Simultaneously, the robust welded connection ensures the geometric stability of the water flow channel, preventing water flow direction deviation or pressure fluctuations caused by loose connections. Furthermore, the welded connection significantly reduces the risk of leakage, especially under high-temperature and high-frequency operating conditions, maintaining the concentric cylindrical shape and continuous flow of water at the spout 14, thus providing a reliable structural guarantee for the uniform extraction of coffee grounds.

[0045] Furthermore, the spout 14 of the spout structure 10 is higher than the height of the kettle body 20.

[0046] By setting the height of the spout 14 to be higher than the height of the kettle body 20, water cannot flow to the spout 14 due to gravity when the kettle is not tilted, thus avoiding accidental dripping. This design is particularly suitable for low-flow water pouring scenarios, in which the water flow is easily dispersed due to surface tension. The height difference helps the water flow maintain a continuous columnar shape, reducing the occurrence of scattering effects.

[0047] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A spout structure for a pour-over coffee maker, characterized in that: It includes a connecting pipe section (11), an extension pipe section (12), and a curved pipe section (13), wherein the connecting pipe section (11), the extension pipe section (12), and the curved pipe section (13) are integrally formed; One end of the connecting pipe section (11) is connected to the body (20) of the pour-over kettle, the other end of the connecting pipe section (11) is connected to one end of the extension pipe section (12), the other end of the extension pipe section (12) is connected to one end of the curved pipe section (13), and the other end of the curved pipe section (13) is the spout (14). The extension pipe section (12) extends vertically in a direction away from the connecting pipe section (11); The curved pipe section (13) bends horizontally toward the side away from the connecting pipe section (11); The inner diameter of the inner wall of the flow channel of the curved pipe section (13) gradually shrinks toward the water outlet (14) to form a constriction structure (15). The inner surface of the constriction structure (15) forms a conical guide section. The inner diameter of the conical guide section decreases continuously and uniformly from the starting position to the water outlet (14).

2. The spout structure of a pour-over coffee maker according to claim 1, characterized in that: The conical guide section forms a cone angle θ at the water outlet (14), wherein 5°≤θ≤15°.

3. The spout structure of a pour-over coffee maker according to claim 2, characterized in that: The outer edge of the water outlet (14) is a flat annular plane (140).

4. The spout structure of a pour-over coffee maker according to claim 3, characterized in that: The angle between the plane containing the annular plane (140) and the horizontal plane is α, where 65°≤α≤80°.

5. The spout structure of a pour-over coffee maker according to claim 4, characterized in that: The maximum inner diameter of the curved pipe section (13) is D, the inner diameter of the water outlet (14) is d, and the inner diameter of the curved pipe section (13) gradually decreases from D to d, where D = 8.4 mm and d = 4.6 mm.

6. A pour-over kettle, characterized in that: It includes a body (20), a lid (30), a handle (40), and a spout structure (10) for a coffee pour-over kettle as described in any one of claims 1 to 5. The top opening of the body (20) of the pot, and the lid (30) covering the top opening of the body (20); The spout structure (10) is provided at the lower front end of the body (20). The handle (40) is provided on the upper rear end of the kettle body (20).

7. A pour-over kettle according to claim 6, characterized in that: The height of the connection between the spout structure (10) and the body (20) is h, and the height of the body (20) is H, where h = (1 / 2 - 1 / 3)H.

8. A pour-over kettle according to claim 7, characterized in that: The connecting pipe section (11) of the spout structure is welded to the body of the kettle (20).

9. A pour-over kettle according to claim 8, characterized in that: The spout (14) of the spout structure (10) is higher than the height of the kettle body (20).

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