A pressure boosting valve and a moka pot

Abstract

This utility model relates to a pressure boosting valve, including a valve cap, a valve core, a sealing plug, and a spring. The valve cap is a hollow structure with an open bottom. The valve cap is fitted onto the outside of the valve core, and the outer wall of the valve core is snapped and sealed to the inner wall of the valve cap. A transition chamber is formed between the valve core and the inner top of the valve cap. The valve core has an inlet hole and an outlet hole for connecting the outside of the pressure boosting valve to the transition chamber. The spring and the sealing plug are placed in the transition chamber. One end of the spring is installed on the inner top of the valve cap, and the other end is installed on the sealing plug. The sealing plug is used to block the inlet hole of the valve core under the action of the spring force and to open the inlet hole of the valve core when the spring force is overcome. This utility model provides an alternative to a pressure boosting valve, which also facilitates quick disassembly and installation of components such as the valve cap and valve core, facilitates thorough cleaning, and avoids residue residue. At the same time, by balancing the spring force and the internal pressure, the opening and closing of the valve core is controlled without affecting the pressure boosting function, ensuring stable and precise pressure during coffee extraction.

Description

Technical Field

[0001] This utility model relates to the field of Moka pot technology, specifically to a pressure boosting valve and a Moka pot equipped with the pressure boosting valve. Background Technology

[0002] A moka pot is a tool used to extract the base of espresso. A typical moka pot has a three-part structure: the lower pot holds water, the middle hopper holds coffee grounds, and the upper pot holds the extracted coffee liquid. Its principle is to heat the water in the lower pot to create steam, and use the steam pressure to push the water into the hopper to extract the coffee liquid. The extracted coffee liquid then continues to be pushed through a tube located in the upper pot and flows out. A moka pot is disclosed in Chinese utility model patent CN222942174U, "Pressure Regulating Valve and Moka Pot".

[0003] Traditional Moka pot pressure valves are mostly one-piece or difficult to disassemble. After long-term use, coffee residue is easily left inside, making cleaning difficult, affecting hygiene and pressure accuracy, which in turn reduces the flavor of coffee extraction. In addition, the cleaning process can easily damage parts and shorten the valve's lifespan. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a pressure boosting valve for use in a moka pot, and a moka pot equipped with the pressure boosting valve.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a pressure boosting valve, including a valve cap, a valve core, a sealing plug, and a spring;

[0006] The valve cap is a hollow structure with an open bottom. The valve cap is fitted onto the outside of the valve core, and the outer wall of the valve core is snapped and sealed with the inner wall of the valve cap. A transition chamber is formed between the valve core and the top of the valve cap.

[0007] The valve core has an inlet hole and an outlet hole for connecting the outside of the booster valve to the transition chamber;

[0008] The spring and sealing plug are placed in the transition chamber, with one end of the spring installed inside the top of the valve cap and the other end installed in the sealing plug;

[0009] A sealing plug is used to block the valve core's inlet hole under the action of spring force and to open the valve core's inlet hole when the spring force is overcome.

[0010] Preferably, a first mounting groove is provided at the top of the valve cap, and one end of the spring is placed in the first mounting groove.

[0011] Preferably, the sealing plug has an inverted T-shaped structure, consisting of a vertical portion and a horizontal portion connected in an inverted T shape;

[0012] The vertical part is placed in the first mounting slot and the other end of the spring is sleeved on the outside of the vertical part;

[0013] The transverse part is used to block the valve core's inlet hole under the action of spring force and to open the valve core's inlet hole when the spring force is overcome.

[0014] Preferably, the bottom end of the inner sidewall of the valve cap is provided with an annular second mounting groove to form a valve core mounting chamber for mounting the valve core; the outer sidewall of the valve core is sealed and assembled with the sidewall of the second mounting groove.

[0015] Preferably, it also includes a sealing ring;

[0016] The outer wall of the valve core and the inner wall of the second mounting groove are respectively provided with grooves that match the sealing ring, and the sealing ring is installed in the groove.

[0017] Preferably, the bottom surface of the valve core has a tubular mounting seat at the position corresponding to the inlet hole.

[0018] A moka pot includes an upper pot, a powder hopper, and a lower pot. The upper pot has a liquid guide tube, and the aforementioned pressure boosting valve is installed at the outlet of the liquid guide tube.

[0019] Preferably, the tubular mounting seat on the bottom surface of the booster valve core, corresponding to the inlet hole, is inserted into the outlet of the liquid guide tube for fixed assembly.

[0020] An inlet port is used to allow liquid to enter the transition chamber from the outlet.

[0021] The outlet hole is used to allow liquid to enter the upper vessel from the transition chamber.

[0022] Compared with the prior art, the advantages of this utility model are as follows: This utility model provides a pressure booster valve alternative, which also facilitates the quick disassembly and installation of components such as valve caps and valve cores, and allows for thorough cleaning to avoid residue residue; at the same time, the pressure booster valve controls the opening and closing of the valve core by balancing the spring force and internal pressure to achieve pressure regulation; it can automatically adjust the internal pressure according to the pressure changes during the coffee extraction process, so that the coffee is extracted under suitable pressure, thereby improving the oil content and flavor profile of the coffee. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the moka pot structure in Example 2;

[0024] Figure 2 for Figure 1 Cross-sectional view of a Chinese moka pot;

[0025] Figure 3 This is a schematic diagram of the booster valve structure in Example 1;

[0026] Figure 4 for Figure 3 Cross-sectional view of the booster valve;

[0027] Figure 5 This is a cross-sectional view of the valve cap in Example 1;

[0028] Figure 6 This is a schematic diagram of the booster valve after the valve cap is removed in Example 1;

[0029] The diagram is labeled: 1 - Upper pot;

[0030] 2-Powder container;

[0031] 3- lower the pot;

[0032] 4-Liquid guide tube, 41-Outlet;

[0033] 5-Pressure booster valve, 51-Valve cap, 511-First mounting groove, 512-Second mounting groove, 52-Valve core, 521-Groove, 522-Inlet hole, 523-Outlet hole, 524-Mounting seat, 53-Sealing plug, 531-Horizontal part, 532-Vertical part, 54-Spring, 55-Sealing ring;

[0034] 6-Composite layer shell, 61-Stainless steel layer, 62-Aluminum layer, 63-Titanium layer. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0036] Example 1:

[0037] Reference Figures 1 to 6 As can be seen, this embodiment provides a pressure boosting valve 5, which is fixedly installed at the outlet 41 of the liquid guide tube 4 of the upper pot of the moka pot 1. When the coffee liquid in the liquid guide tube 4 reaches the corresponding pressure boosting intensity, the pressure boosting valve 5 is opened to allow the coffee liquid to flow into the upper pot 1.

[0038] The aforementioned pressure boosting valve 5 includes a valve cap 51, a spring 54, a sealing plug 53, a valve core 52, and a sealing ring 55.

[0039] The valve cap 51 is a hollow structure with an open bottom. A first mounting groove 511 is provided on the inner top wall of the valve cap 51. The first mounting groove 511 can be used to install the spring 54 and can also be used to accommodate the sealing plug 53. A second annular mounting groove 512 is provided at the bottom end of the inner side wall of the valve cap 51. The bottom end of the inner side wall of the valve cap 51 means that the bottom surface of the second mounting groove 512 is the bottom surface of the valve cap 51. The cross-section of the inner side wall of the valve cap 51 is stepped. The second mounting groove 512 can be used to install the sealing ring 55 and adapt to install the valve core 52, so that the valve core 52 can be quickly installed and positioned in the second mounting groove 512.

[0040] Furthermore, to facilitate the installation of the sealing ring 55, grooves 521 matching the sealing ring 55 are respectively provided on the outer wall of the valve core 52 and the inner wall of the second mounting groove 512. The sealing ring 55 is installed into the groove 521 so that the valve core 52 and the valve cap 51 can maintain a sealed assembly with the inner wall of the second mounting groove 512, which has a sealing and locking function. The sealing ring 55 is made of silicone material, which has an elastic and free disassembly effect.

[0041] The aforementioned sealing plug 53 has an inverted T-shaped structure, consisting of a vertical part 532 and a horizontal part 531 connected in an inverted T shape. The sealing plug 53 is made of silicone. Under the action of the spring 54, the sealing plug 53 blocks the inlet hole 522 of the valve core 52, preventing the liquid in the inlet hole 522 from flowing out. When the liquid pressure is greater than the elastic force of the spring 54, the liquid pushes open the sealing plug 53 and flows out from the inlet hole 522.

[0042] The valve core 52 is installed into the second mounting groove 512, and the outer wall of the valve core 52 is sealed to the second mounting groove 512 by a sealing ring 55. Thus, a transition chamber 56 is formed between the top of the valve core 52 and the inner top and inner side walls of the valve cap 51. The stepped distribution of the cross-section of the inner side wall of the valve cap 51 achieves the separation between the transition chamber 56 and the valve core mounting chamber 57 (the chamber inside the valve cap 51 used to install the valve core 52, corresponding to the position of the second mounting groove 512). A gas supply is provided inside the valve core 52. The coffee liquid enters the transition chamber 56 through the inlet hole 522 from the liquid guide tube 4. The liquid outside the pressure booster valve 5 enters the transition chamber 56 inside the pressure booster valve 5 through the valve core 52. The valve core 52 also has an outlet hole 523 that communicates with the transition chamber 56, so that the coffee liquid in the transition chamber 56 flows out of the transition chamber 56 to the outside of the pressure booster valve 5 through the outlet hole 523. When the pressure booster valve 5 is installed on the liquid guide tube 4 inside the upper pot 1 of the moka pot, the coffee liquid enters the upper pot 1 through the outlet hole 523.

[0043] The aforementioned sealing plug 53 is placed in the transition chamber 56 corresponding to the inlet hole 522 of the valve core 52. One end of the spring 54 is installed on the inner top wall of the valve cap 51, and the other end is installed on the sealing plug 53. The spring 54 provides pressurization power, so that the sealing plug 53 can normally block the inlet hole 522 of the valve core 52 under the action of the spring 54. One installation scheme that facilitates disassembly and cleaning is as follows: one end of the spring 54 is placed in the first mounting groove 511 on the inner top wall of the valve cap 51, and the other end of the spring 54 is sleeved on the outside of the vertical part 532 of the sealing plug 53, and the vertical part 532 is also placed in the first mounting groove 511. When the horizontal part 531 blocks the inlet hole 522 under the action of the spring 54, the vertical part 532 in the first mounting groove 511 still has a section of the sealing plug 53 that can be pushed by coffee liquid to open the inlet hole 522. In this way, when the spring force is overcome, the horizontal part 531 can open the inlet hole 522 of the valve core 52. In this way, the spring 54 and the sealing plug 53 are placed rather than fixedly installed with the valve cap 51 and the valve core 52, so that after the valve cap 51 is removed from the valve core 52, the spring 54 and the sealing plug 53 can be flexibly removed for cleaning.

[0044] To install the aforementioned pressure booster valve 5 onto the flow tube 4 of the upper container 1 of a moka pot, the following installation method can be adopted: The valve cap 51 of the pressure booster valve 5 is sealed around the outside of the valve core 52, so that a tubular mounting seat 524 extends outward from the bottom surface of the valve core 52 corresponding to the inlet hole 522. This mounting seat 524 is fixedly connected to the flow tube 4, for example by welding, so that the outlet 41 of the flow tube 4 is connected to the inlet hole 522 of the valve core 52. In this way, the valve cap 51 is not connected to the flow tube 4; the pressure booster valve 5 and the flow tube 4 are assembled only through the mounting seat 524 on the bottom surface of the valve core 52 and the outlet 41 of the flow tube 4. Using a mounting seat 524 protruding from the bottom surface of the valve core 52 makes it easy to insert the mounting seat 524 into the flow tube 4 for connection and installation.

[0045] When the coffee liquid enters the inlet hole 522 of the valve core 52 from the outlet 41 of the guide tube 4 and reaches the corresponding pressure, it overcomes the spring force, causing the lateral part 531 of the sealing plug 53 to move upward to release the blockage of the inlet hole 522. The coffee liquid then flows out of the inlet hole 522 into the transition chamber 56, and then flows out of the outlet hole 523 of the valve core 52 from the pressure boosting valve 5, entering the upper pot 1. This pressure boosting valve 5 controls the opening and closing of the valve core 52 by balancing the elasticity of the spring 54 with the internal pressure, thus achieving pressure regulation. It can automatically adjust the internal pressure according to the pressure changes during the coffee extraction process, allowing the coffee to be extracted under suitable pressure, thereby enhancing the coffee's oil content and flavor profile.

[0046] The advantages of the aforementioned pressure booster valve 5 are: it facilitates quick disassembly and installation of components such as valve cap 51 and valve core 52, allows for thorough cleaning to avoid residue residue, and does not affect the pressure boosting function, ensuring stable and precise pressure during coffee extraction.

[0047] Example 2:

[0048] This embodiment provides a moka pot, including an upper pot 1, a powder hopper 2, and a lower pot 3. A pressure relief valve is installed on the lower pot 3. The upper pot 1 contains a liquid guide tube 4. The structure and connection relationships of the upper pot 1, powder hopper 2, lower pot 3, and liquid guide tube 4 are all existing technologies and will not be described in detail here. A pressure boosting valve 5 from embodiment 1 is installed at the outlet 41 of the liquid guide tube 4. The mounting base 524 of the valve core 52 is inserted into the outlet 41 of the liquid guide tube 4 for fixed assembly. Welding can be used to connect the outlet 41 with the inlet hole 522.

[0049] Pour water into the lower chamber 3, ensuring the water level does not exceed the pressure relief valve; place coffee powder into the powder hopper 2; heat the bottom of the lower chamber 3, causing the water in the lower chamber 3 to generate steam. The steam pressure pushes the water into the powder hopper 2 to extract the coffee liquid. The coffee liquid is pushed by the steam into the liquid guide tube 4 and enters the inlet hole 522 of the valve core 52. When the coffee liquid gathers and pressurizes, it overcomes the force of the spring 54 and releases the sealing plug 53 from blocking the inlet hole 522 of the valve core 52. The coffee liquid then enters the transition chamber 56 through the inlet hole 522 and flows into the upper chamber 1 through the outlet hole 523 of the valve core 52.

[0050] Moreover, the lower pot 3 and upper pot 1 of the Moka pot are respectively made of a composite shell 6 composed of three layers of materials. The composite shell 6 consists of an outer stainless steel layer 61, a middle aluminum layer 62, and an inner titanium layer 63. The three layers are bonded together by a simple hot pressing process to form a stable whole without the need for complicated connectors.

[0051] The outer stainless steel layer provides support, scratch and wear resistance, and ensures strength and compatibility with various stovetops. The middle layer uses aluminum, which utilizes its excellent thermal conductivity to quickly and evenly transfer heat, improving heat distribution uniformity. The inner layer uses food-grade titanium, whose stable chemical properties prevent metal ion release, ensuring safe coffee consumption. Titanium also has a certain degree of corrosion resistance, extending the lifespan of the pot. In use, the outer layer is compatible with various stovetops, the middle layer conducts heat quickly, and the inner layer ensures drinking safety. The structure is simple and highly practical. By optimizing the pot's material structure, it balances thermal efficiency and safety, overcoming the performance deficiencies of traditional single-material moka pots and the complex structure and high manufacturing difficulty of traditional composite material moka pots. It combines high-efficiency heat conduction, safe and non-leaching properties, durable structure, and strong compatibility, making it suitable for home use, small coffee shops, and other scenarios to meet daily coffee extraction needs.

Claims

1. A pressure boosting valve, characterized in that: Includes valve cap, valve core, sealing plug, and spring; The valve cap is a hollow structure with an open bottom. The valve cap is fitted onto the outside of the valve core, and the outer wall of the valve core is snapped and sealed with the inner wall of the valve cap. A transition chamber is formed between the valve core and the top of the valve cap. The valve core has an inlet hole and an outlet hole for connecting the outside of the booster valve to the transition chamber; The spring and sealing plug are placed in the transition chamber, with one end of the spring installed inside the top of the valve cap and the other end installed in the sealing plug; A sealing plug is used to block the valve core's inlet hole under the action of spring force and to open the valve core's inlet hole when the spring force is overcome.

2. The pressure boosting valve according to claim 1, characterized in that: The valve cap has a first mounting groove at its top, and one end of the spring is placed in the first mounting groove.

3. The pressure boosting valve according to claim 2, characterized in that: The sealing plug has an inverted T-shaped structure, consisting of a vertical part and a horizontal part that are connected in an inverted T shape; The vertical part is placed in the first mounting slot and the other end of the spring is sleeved on the outside of the vertical part; The transverse part is used to block the valve core's inlet hole under the action of spring force and to open the valve core's inlet hole when the spring force is overcome.

4. The pressure boosting valve according to claim 1, characterized in that: The bottom end of the inner sidewall of the valve cap is provided with an annular second mounting groove to form a valve core mounting chamber for mounting the valve core; the outer sidewall of the valve core is sealed and assembled with the sidewall of the second mounting groove.

5. The pressure boosting valve according to claim 4, characterized in that: It also includes a sealing ring; The outer wall of the valve core and the inner wall of the second mounting groove are respectively provided with grooves that match the sealing ring, and the sealing ring is installed in the groove.

6. The pressure boosting valve according to claim 1, characterized in that: The bottom surface of the valve core has a tubular mounting seat at the position corresponding to the inlet hole.

7. A moka pot, comprising an upper pot, a powder hopper, and a lower pot, wherein the upper pot has a liquid delivery tube, characterized in that: A pressure boosting valve as described in any one of claims 1-6 is installed at the outlet of the liquid guide tube.

8. The Moka pot according to claim 7, characterized in that: The tubular mounting seat on the bottom of the valve core of the booster valve, corresponding to the position of the inlet hole, is inserted into the outlet of the liquid guide tube for fixed assembly. An inlet port is used to allow liquid to enter the transition chamber from the outlet. The outlet hole is used to allow liquid to enter the upper vessel from the transition chamber.

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