Pressurizing and pressure releasing valve for coffee extraction and pressurizing device of pressurizing and pressure releasing valve

Abstract

The pressure increasing and releasing valve comprises a valve body, an elastic piece and a sealing ball, the valve body is arranged in a water passing pipeline and used for opening and closing the pipeline, the elastic piece provides supporting elastic force for the valve body, a through hole penetrating through the whole valve body is formed in the middle of the valve body, and the sealing ball is arranged in the through hole. The through hole comprises an upper section with a first diameter and a lower section with a second diameter, and a sealing ball is arranged in the upper section; through cooperation of the valve body, the elastic piece and the sealing ball, hot water in the water passing pipeline continuously accumulates downward pressure on the valve body, when the internal water pressure exceeds the supporting force of the elastic piece, the accumulated water pressure enables the valve body to move downwards, and the purpose of pressurizing the hot water is achieved; when pressure relief is needed, hot water or hot air enters along the bottom end of the lower section of the through hole to push the sealing ball to move upwards, so that pressure relief is completed, the pressure relief function is achieved, the problem that the extraction handle cannot be taken down due to too large pressure is solved, and efficient use of equipment is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee machines, in particular to a pressure boosting and pressure relief valve for coffee extraction and its pressure boosting device. Background Technique

[0002] Coffee machines are commonly used coffee brewing utensils. They use the air pressure and water pressure generated by boiling water to extract coffee powder for drinking. The coffee obtained in this way is called espresso, and part of the coffee oil will also be extracted. Therefore, a rich layer of oil can be seen on the surface of the espresso.

[0003] There are approximately two types of pressure boosting extraction valves for coffee machines on the market. One is to use a silicone plug with a spring to block the water outlet hole to increase the water pressure or steam pressure inside the coffee machine. The other is to use a silicone plug with a telescopic through hole to pressurize the steam inside the coffee machine. However, in actual use, the inside of the coffee machine may be blocked, resulting in excessive internal pressure of the extraction component. Under excessive pressure, the extraction handle cannot be removed, seriously affecting the use during the coffee extraction process. Content of the Utility Model

[0004] The purpose of the utility model is to provide a pressure boosting and pressure relief valve for coffee extraction and its pressure boosting device, aiming to solve the above-mentioned problems.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows: A pressure boosting and pressure relief valve for coffee extraction, comprising:

[0006] A valve body, which is arranged in a water passing pipeline and is used for opening and closing the pipeline;

[0007] An elastic member, which provides a supporting elastic force for the valve body;

[0008] A through hole penetrating the entire valve body is arranged in the middle of the valve body. The through hole includes an upper section with a first diameter and a lower section with a second diameter, and the first diameter is greater than the second diameter;

[0009] Wherein, a sealing ball is arranged in the upper section, and the diameter of the sealing ball is greater than the second diameter and less than the first diameter.

[0010] Preferably, a stepped recess is formed on the outer peripheral surface of the valve body, and the elastic member is arranged on the stepped recess.

[0011] Preferably, the shape of the valve body is T-shaped or ↑-shaped.

[0012] Preferably, the elastic member is a compression spring.

[0013] Preferably, the entrance of the upper section is concave.

[0014] A pressure boosting device for coffee extraction of a coffee machine with a pressure relief function, including the pressure boosting and relief valve in the above, further including:

[0015] A mounting base;

[0016] A water connection joint, provided at the top of the mounting base. An outlet channel is provided on the mounting base, and the water connection joint is connected to the outlet channel through a water delivery pipe;

[0017] An expansion cavity for accommodating the pressure boosting and relief valve is provided in the water delivery pipe. The pressure boosting and relief valve is provided in the expansion cavity, with its upper end abutting against the cavity wall to form a seal, and its lower end abutting against the mounting base through the elastic member.

[0018] Preferably, a support protrusion is provided on the outlet channel, and the elastic member is located between the support protrusion and the valve body to enable the top of the valve body to abut against and seal the water outlet of the water connection joint.

[0019] Preferably, a water inlet pipe and a pressure relief pipe are connected to the water connection joint, and the water inlet pipe and the pressure relief pipe are respectively connected to the water delivery pipe.

[0020] Preferably, an annular groove is provided at the bottom of the water connection joint, and a sealing ring is provided in the annular groove.

[0021] Preferably, a mounting interface is provided at the bottom of the mounting base.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present utility model are:

[0023] In the present utility model, when using the pressure boosting and relief valve to boost the pressure of hot water, through the cooperation of the valve body, the elastic member and the sealing ball, the hot water in the water passing pipe continuously accumulates downward pressure on the valve body. When the internal water pressure exceeds the supporting force of the elastic member, the accumulated water pressure causes the valve body to move downward, achieving the purpose of boosting the pressure of hot water; when pressure relief is required, hot water or hot gas enters from the bottom end of the lower section of the through hole, pushing the sealing ball upward, thereby completing pressure relief. Compared with the existing pressure boosting extraction valve, it has a pressure relief function, solves the problem that the extraction handle cannot be removed due to excessive pressure, and facilitates the efficient use of the equipment. Description of the Drawings

[0024] Figure 1 Is a three-dimensional view of the pressure boosting and relief valve in the present utility model;

[0025] Figure 2 Is a cross-sectional view of the pressure boosting and relief valve in the present utility model;

[0026] Figure 3 Is a three-dimensional view of the pressure boosting device in the present utility model.

[0027] Figure 4 This is a cross-sectional view of the pressurizing device in the disassembled state of the present utility model;

[0028] Figure 5 This is a cross-sectional view of the pressurizing device of the present utility model.

[0029] Markings in the figure:

[0030] 1. Mounting base; 101. Water outlet channel;

[0031] 2. Water connection joint; 201. Expansion cavity; 202. Water supply pipe;

[0032] 301. Support protrusion; 302. Valve body; 303. Elastic member;

[0033] 401. Upper section; 402. Lower section; 403. Sealing ball; 404. Pressure relief pipe; 5. Mounting groove position; 6. Annular groove; 7. Sealing ring; 8. Mounting interface; 9. Water inlet pipe. Detailed implementation manners

[0034] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0035] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0036] Referring to Figure 1-2 , a pressure relief valve for coffee extraction includes a valve body 302, an elastic member 303, and a sealing ball 403, wherein:

[0037] The valve body 302 is arranged in the water pipeline, and the shape of the valve body 302 is in a T shape or an ↑ shape, and is used for opening and closing the pipeline.

[0038] The elastic member 303 is a compression spring. A stepped recess is formed on the outer peripheral surface of the valve body 302. The elastic member 303 is disposed on the stepped recess, and specifically, it can be sleeved on the outer peripheral surface of the stepped recess to provide a supporting elastic force for the valve body 302.

[0039] A through hole penetrating the entire valve body 302 is provided in the middle of the valve body 302. The through hole includes an upper section 401 having a first diameter and a lower section 402 having a second diameter, and the first diameter is greater than the second diameter.

[0040] The sealing ball 403 is disposed in the upper section 401. The entrance of the upper section 401 is concave to facilitate the sealing of the entrance of the upper section 401 by the sealing ball 403. The diameter of the sealing ball 403 is greater than the second diameter and less than the first diameter.

[0041] In this embodiment, when using the pressure boosting and pressure relief valve to boost the pressure of hot water, the valve body 302 is disposed in the water passing pipeline. The top of the valve body 302 is in a sealed state with the water outlet of the water passing pipeline. The bottom end of the elastic member 303 abuts against the inside of the water passing pipeline. When the hot water in the water passing pipeline continuously accumulates downward pressure on the valve body 302, when the internal water pressure exceeds the supporting force of the elastic member 303, the accumulated water pressure causes the valve body 302 to move downward. At this time, the elastic member 303 is in a compressed state, and the sealing ball 403 seals to the outlet end of the upper section 401 of the through hole. The sealing state between the top of the valve body 302 and the water outlet of the water passing pipeline is released. While discharging water, the purpose of boosting the pressure of hot water is achieved, which is convenient for coffee extraction.

[0042] When the hot water pressure is too high during coffee extraction and pressure relief is required, hot water or hot air enters through the bottom port of the lower section 402 of the through hole, pushing the sealing ball 403 to move upward, and the sealing state of the sealing ball 403 is released, realizing the pressure relief function. Compared with the existing pressure boosting extraction valve, it has a pressure relief function, solves the problem that the extraction handle cannot be removed due to excessive pressure, improves the use efficiency, and is convenient for the efficient use of the equipment.

[0043] As shown in Figures 3 - 5, this embodiment further provides a pressure boosting device for coffee extraction with a pressure relief function, which is installed at the coffee outlet end of the coffee machine and is used for boosting the pressure of liquid hot water to achieve coffee extraction. It includes the pressure boosting and pressure relief valve for coffee extraction described above, a mounting base 1, a water connection joint 2, and a mounting interface 8, where:

[0044] The overall shape of the mounting base 1 is disk-shaped, and threaded holes are provided around it. The mounting base 1 can be installed on the coffee outlet end of the coffee machine through screws.

[0045] The water connection joint 2 is provided at the top of the mounting base 1. An inlet water pipe 9 is connected to the water connection joint 2. The inlet water pipe 9 is communicated with the water supply pipe 202 and is used to be connected to the hot water outlet pipe in the coffee machine together, so that the hot water for extracting coffee in the coffee machine can enter the interior of the water connection joint 2 along the inlet water pipe 9.

[0046] An outlet water channel 101 is provided on the mounting base 1. The water connection joint 2 and the outlet water channel 101 are communicated through the water supply pipe 202. The hot water for extracting coffee can enter the outlet water channel 101 along the inlet water pipe 9 and the water connection joint 2.

[0047] The mounting interface 8 is opened at the bottom of the mounting base 1. A powder bowl for containing coffee powder can be installed on the mounting interface 8. There is a coffee liquid outlet on the powder bowl. The hot water in the water connection joint 2 enters the powder bowl along the outlet water channel 101, thus realizing the extraction of coffee.

[0048] An expansion cavity 201 for accommodating a pressure boosting and pressure relieving valve is provided in the water supply pipe 202. The pressure boosting and pressure relieving valve is provided in the expansion cavity 201. The upper end abuts against the cavity wall to form a seal, and the lower end abuts against the mounting base 1 through an elastic member 303. The hot water passing through the water connection joint 2 can pass through the pressure boosting and pressure relieving valve, and the pressure boosting and pressure relieving valve can increase the pressure of the hot water, thus realizing the purpose of liquid pressure boosting and ensuring the quality of coffee extraction.

[0049] The water supply pipe 202 is arranged vertically. The inner diameter of the water supply pipe 202 can be the same as that of the upper section 401 and is on the same center line. The diameter of the sealing ball 403 is smaller than the inner diameter of the upper section 401 and the inner diameter of the water supply pipe 202, so that the sealing ball 403 can move along the upper section 401 and the water supply pipe 202.

[0050] A support protrusion 301 is provided on the outlet water channel 101. The elastic member 303 is located between the support protrusion 301 and the valve body 302. The elastic member 303 gives the valve body 302 a tendency to always move towards the water outlet of the water connection joint 2, so as to realize the abutting seal between the top of the valve body 302 and the water outlet of the water connection joint 2.

[0051] A pressure relief pipe 404 is connected to the water connection joint 2. The pressure relief pipe 404 is communicated with the water supply pipe 202. The inlet water pipe 9 and the pressure relief pipe 404 are arranged in a Y shape. At this time, the water supply pipe 202 is also used as a channel for inlet water liquid from the inlet water pipe 9 and a channel for pressure relief of the pressure relief pipe 404. In addition, in order to prevent the sealing ball 403 from being discharged along the inlet water pipe 9 or the pressure relief pipe 404, the caliber of the connection between the inlet water pipe 9 and the water supply pipe 202 is smaller than the diameter of the sealing ball 403, and the caliber of the connection between the pressure relief pipe 404 and the water supply pipe 202 is smaller than the diameter of the sealing ball 403.

[0052] In this embodiment, when using a coffee machine with a pressure relief function to boost the pressure of hot water with a pressure boosting device for coffee extraction, the top of the valve body 302 is in an abutting and sealing state with the water outlet of the water connection joint 2. The hot water in the water connection joint 2 continuously accumulates downward pressure on the valve body 302. When the internal water pressure exceeds the supporting force of the elastic member 303, the accumulated water pressure causes the valve body 302 to move downward. At this time, the elastic member 303 is in a compressed state, and the sealing ball 403 seals the upper end 401 outlet end of the through hole, achieving the purpose of hot water pressure boosting and facilitating coffee extraction.

[0053] When the hot water pressure becomes too high during coffee extraction and pressure relief is required, the hot water or hot gas enters from the bottom end of the water outlet channel 101, enters the upper section 401 through the bottom opening of the lower section 402, pushes the sealing ball 403 upward, rolls upward along the water supply pipe 202 into the water connection joint 2, and finally completes pressure relief through the pressure relief pipe 404. Compared with the existing pressure boosting extraction valve, it has a pressure relief function, solves the problem that the extraction handle cannot be removed due to excessive pressure, improves the use efficiency, and facilitates the efficient use of the equipment.

[0054] In a possible embodiment, as Figure 4 shown, an installation slot 5 is opened at the top of the mounting base 1, and the bottom of the water connection joint 2 is detachably installed in the installation slot 5. The more specific structure for detachable installation is that the bottom of the water connection joint 2 is installed in the installation slot 5 through screws. Specifically, a connection seat is fixedly connected to the bottom end of the water connection joint 2, and the connection seat is connected to the installation slot 5 through screws, thereby realizing the detachable connection between the water connection joint 2 and the mounting base 1, facilitating maintenance and replacement.

[0055] Alternatively, the bottom of the water connection joint 2 is installed in the installation slot 5 through a threaded structure. Specifically, the water connection joint 2 is provided with a threaded groove, and a threaded sleeve adapted to the threaded groove is provided in the installation slot 5. The water connection joint 2 is detachably installed on the mounting base 1 through the threaded groove and the threaded sleeve.

[0056] Alternatively, the bottom of the water connection joint 2 is installed in the installation slot 5 through a snap connection structure. A snap is fixedly connected to the bottom of the water connection joint 2, and a card slot adapted to the snap is opened in the installation slot 5. The water connection joint 2 is snap-connected to the mounting base 1 through the cooperation of the snap and the card slot.

[0057] In a possible embodiment, as Figure 4 shown, an annular groove 6 is opened at the bottom of the water connection joint 2, and a sealing ring 7 is provided in the annular groove 6 to achieve the sealed installation between the water connection joint 2 and the mounting base 1.

Claims

1. A pressure boosting and pressure relieving valve for coffee extraction, characterized in that, Comprising: A valve body (302) disposed in a water passing pipeline for opening and closing the pipeline; An elastic member (303) providing support elastic force for the valve body (302); A through hole penetrating the entire valve body (302) is provided in the middle of the valve body (302), and the through hole includes an upper section (401) having a first diameter and a lower section (402) having a second diameter, and the first diameter is greater than the second diameter; Wherein, a sealing ball (403) is provided in the upper section (401), and the diameter of the sealing ball (403) is greater than the second diameter and less than the first diameter.

2. The pressure boosting and pressure relieving valve for coffee extraction according to claim 1, wherein, A stepped recess is formed on the outer peripheral surface of the valve body (302), and the elastic member (303) is disposed on the stepped recess.

3. The pressure boosting and pressure relief valve for coffee extraction according to claim 1 or 2, characterized in that The shape of the valve body (302) is T-shaped or ↑-shaped.

4. The pressure boosting and pressure relief valve for coffee extraction according to claim 3, wherein The elastic member (303) is a compression spring.

5. The pressure boosting and pressure relief valve for coffee extraction according to claim 1, wherein The entrance of the upper section (401) is concave.

6. A pressure boosting device for coffee extraction of a coffee machine with a pressure relief function, characterized in that, Comprising the pressure increasing and relieving valve according to any one of claims 1-5, further comprising: A mounting seat (1); A water connection joint (2) disposed on the top of the mounting seat (1), an outlet channel (101) is provided on the mounting seat (1), and the water connection joint (2) is communicated with the outlet channel (101) through a water delivery pipeline (202); An expansion cavity (201) for accommodating the pressure increasing and relieving valve is provided in the water delivery pipeline (202), the pressure increasing and relieving valve is disposed in the expansion cavity (201), the upper end abuts against the cavity wall to form a seal, and the lower end abuts against the mounting seat (1) through the elastic member (303).

7. The pressurizing device for coffee extraction of a coffee machine with a pressure relief function according to claim 6, characterized in that, A support protrusion (301) is provided on the outlet channel (101), and the elastic member (303) is located between the support protrusion (301) and the valve body (302) to enable the top of the valve body (302) to abut against the outlet of the water connection joint (2) for sealing.

8. The pressure boosting device for coffee extraction of a coffee machine with a pressure relief function according to claim 6, characterized in that, An inlet pipe (9) and a pressure relief pipe (404) are connected to the water connection joint (2), and the inlet pipe (9) and the pressure relief pipe (404) are respectively communicated with the water delivery pipeline (202).

9. The pressurizing device for coffee extraction of a coffee machine with a pressure relief function according to any one of claims 6-8, characterized in that, An annular groove (6) is formed at the bottom of the water connection joint (2), and a sealing ring (7) is provided in the annular groove (6).

10. The pressurizing device for coffee extraction of a coffee machine with a pressure relief function according to any one of claims 6-8, characterized in that, A mounting interface (8) is formed at the bottom of the mounting seat (1).

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