Supercharging device for coffee extraction of coffee machine

Abstract

The utility model discloses a pressurizing device for coffee extraction of a coffee machine. The pressurizing device comprises an installation base, a water passing connector, a pressurizing valve and a pressure relief pipe. The water connector is arranged at the top of the mounting seat, a water outlet channel is arranged on the mounting seat, and the water connector is communicated with the water outlet channel; the pressure increasing valve comprises a valve pipe, a pressure increasing channel arranged in the valve pipe and a pressure increasing outlet, the valve pipe is arranged between the water passing connector and the water outlet channel, and the pressure increasing outlet is formed in the bottom end face of the valve pipe and used for increasing pressure of liquid. The pressure relief pipe is arranged on the water passing joint; when hot water in the water passing connector flows into the pressurizing channel, due to the fact that the hole diameter of the pressurizing outlet is smaller than that of the pressurizing channel, the pressure of the hot water accumulated in the pressurizing channel and discharged from the pressurizing channel is increased, and when pressure relief is needed, the hot water or the hot air enters the water passing connector through the bottom of the pressurizing outlet. Finally, pressure relief is completed through the pressure relief pipe, the pressure relief function is achieved, and the using effect in the extraction process is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee machines, in particular to a pressure boosting device for coffee extraction of a coffee machine. Background Art

[0002] A coffee machine is a commonly used coffee brewing utensil. It uses 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 to increase the water pressure or steam pressure in the coffee machine. The other is to use a silicone plug with a telescopic through hole to pressurize the steam in the coffee machine. However, the pressure fluctuation during extraction of its products will be intermittently too large, and the existing pressure boosting extraction valve does not have a pressure relief function, which seriously affects the use effect during the extraction process. Summary of the Utility Model

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

[0005] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0006] A pressure boosting device for coffee extraction of a coffee machine, comprising:

[0007] A mounting seat;

[0008] A water connection joint, arranged on the top of the mounting seat. An outlet channel is arranged on the mounting seat, and the water connection joint is communicated with the outlet channel;

[0009] A pressure boosting valve, comprising a valve tube, a pressure boosting channel arranged in the valve tube and a pressure boosting outlet. The valve tube is arranged between the water connection joint and the outlet channel. The water inlet of the pressure boosting channel is communicated with the water outlet of the water connection joint, and the pressure boosting outlet is opened on the bottom end surface of the valve tube for realizing the pressurization of the liquid;

[0010] A pressure relief tube, arranged on the water connection joint, and the inner cavity of the pressure relief tube is communicated with the inner cavity of the water connection joint.

[0011] Preferably, the valve tube is hermetically installed at the water outlet end of the water connection joint.

[0012] Preferably, it further comprises a connecting sleeve for installing the valve tube;

[0013] The valve tube is inserted into the top of the connecting sleeve, and the connecting sleeve is hermetically installed at the water outlet end of the water connection joint.

[0014] Preferably, an annular groove I is formed on the outer circumferential surface of the valve pipe, and a sealing ring I is arranged on the annular groove I.

[0015] Preferably, a supporting protrusion is installed on the water outlet channel, the bottom end of the connecting sleeve is installed on the supporting protrusion, and a plurality of water discharge ports are spaced apart from each other at the bottom end of the connecting sleeve.

[0016] Preferably, an installation space is provided at the bottom of the water connection joint, and the connecting sleeve is hermetically installed in the installation space.

[0017] Preferably, an installation slot is formed at the top of the installation base, and the bottom of the water connection joint is detachably installed in the installation slot.

[0018] Preferably, the bottom of the water connection joint is installed in the installation slot by screws; alternatively, the bottom of the water connection joint is installed in the installation slot by a threaded structure; alternatively, the bottom of the water connection joint is installed in the installation slot by a clamping structure.

[0019] Preferably, a water inlet pipe is connected to the water connection joint, and the water inlet pipe and the pressure relief pipe are arranged in a Y shape.

[0020] Preferably, an installation interface is formed at the bottom of the installation base.

[0021] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0022] In the present utility model, when a pressure increasing valve is used to increase the pressure of hot water, the top of the valve pipe is in a communicating state with the water outlet of the water connection joint. When the hot water in the water connection joint flows into the pressure increasing channel, since the aperture of the pressure increasing outlet is smaller than that of the pressure increasing channel, the pressure of the hot water accumulated in the pressure increasing channel and discharged from the pressure increasing channel will increase. When pressure relief is required, the hot water or hot gas enters from the bottom end of the water outlet channel, enters the pressure increasing channel and the water connection joint through the bottom of the pressure increasing outlet, and finally completes pressure relief through the pressure relief pipe, thus having a pressure relief function, ensuring the use effect during the extraction process, and facilitating the safe use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural view of the present utility model;

[0024] Figure 2 is an exploded view of the present utility model;

[0025] Figure 3 is a first sectional view of the present utility model;

[0026] Figure 4 is a schematic view of the pressure increasing valve in the present utility model;

[0027] Figure 5 This is the second cross-sectional view of the present utility model.

[0028] Reference numerals in the figure: 1, mounting base; 101, water outlet channel; 2, water connection joint; 201, installation space; 3, pressure boosting valve; 301, valve pipe; 302, pressure boosting channel; 303, pressure boosting outlet; 304, connecting sleeve; 400, pressure relief pipe; 4, first annular groove; 5, first sealing ring; 6, supporting protrusion; 7, water discharge port; 8, installation slot; 9, water inlet pipe; 10, installation interface; 11, second annular groove; 12, second sealing ring. Specific embodiments

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is 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.

[0030] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, 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.

[0031] Refer to Figures 1 - 3 , a pressure boosting device for coffee extraction of a coffee machine, which is installed on the coffee outlet end of the coffee machine and is used for boosting the pressure of liquid (hot water) to achieve coffee extraction. The pressure boosting device includes a mounting base 1, a water connection joint 2, a pressure boosting valve 3, a pressure relief pipe 400, and an installation interface 10; wherein:

[0032] The overall shape of the mounting base 1 is disc-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;

[0033] The water connection joint 2 is arranged on the top of the mounting base 1, and a water inlet pipe 9 is connected to the water connection joint 2 and is used to be connected to the hot water outlet pipe inside the coffee machine together, so that the hot water for coffee extraction in the coffee machine can enter the inside of the water connection joint 2 along the water inlet pipe 9;

[0034] The mounting base 1 is provided with a water outlet channel 101. The water connection joint 2 is communicated with the water outlet channel 101. The hot water for extracting coffee can enter the water outlet channel 101 along the water inlet pipe 9 and the water connection joint 2;

[0035] The mounting interface 10 is opened at the bottom of the mounting base 1. A powder bowl for holding coffee powder can be installed on the mounting interface 10. 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 water outlet channel 101, thus realizing the extraction of coffee;

[0036] The pressure increasing valve 3 is arranged between the water connection joint 2 and the water outlet channel 101 and is used to increase the pressure of the hot water for extracting coffee. The pressure increasing valve 3 includes a valve pipe 301, a pressure increasing channel 302 arranged in the valve pipe 301 and a pressure increasing outlet 303. The valve pipe 301 is arranged between the water connection joint 2 and the water outlet channel 101. The water inlet of the pressure increasing channel 302 is communicated with the water outlet of the water connection joint 2. And the outer periphery of the valve pipe 301 is hermetically installed at the water outlet end of the water connection joint 2. More specifically, an installation space 201 is provided at the bottom of the water connection joint 2. The outer periphery of the valve pipe 301 is hermetically installed in the installation space 201 to ensure that the hot water for extracting coffee can only be delivered downward along the pressure increasing channel 302;

[0037] The pressure increasing outlet 303 is opened on the bottom end face of the valve pipe 301. The aperture of the pressure increasing outlet 303 is smaller than that of the pressure increasing channel 302. The specific size of the pressure increasing outlet 303 is: width 0.05 mm, length 2 - 4 mm (preferably 2.5 mm), and height is the thickness of the bottom wall of the valve pipe 301. The hot water to be extracted can enter the interior of the pressure increasing channel 302 along the water connection joint 2. Because the aperture of the pressure increasing outlet 303 is small, the pressure of the water flow passing through the pressure increasing outlet 303 can be increased, realizing the pressure increase of the liquid and ensuring the quality of coffee extraction;

[0038] The pressure relief pipe 400 is arranged on the water connection joint 2. The water inlet pipe 9 and the pressure relief pipe 400 are arranged in a Y shape. The inner cavity of the pressure relief pipe 400 is communicated with the inner cavity of the water connection joint 2. When the hot water pressure in the coffee machine equipment fluctuates intermittently too much, the water pressure or steam pressure can be relieved through the pressure relief pipe 400, ensuring the safe operation of the equipment;

[0039] In this embodiment, when using the pressure increasing valve 3 to increase the pressure of hot water, the top of the valve pipe 301 is in a communicating state with the water outlet of the water connection joint 2. When the hot water in the water connection joint 2 flows into the pressure increasing channel 302, because the aperture of the pressure increasing outlet 303 is smaller than that of the pressure increasing channel 302, the pressure of the hot water accumulated in the pressure increasing channel 302 and discharged from the pressure increasing channel 302 will increase, realizing the purpose of hot water pressure increase and facilitating coffee extraction;

[0040] When the hot water pressure is too high during coffee extraction and pressure relief is required, hot water or hot air enters along the bottom end of the water outlet channel 101, enters the pressure increasing channel 302 through the bottom of the pressure increasing outlet 303 and then enters the internal channel of the water connection joint 2, and finally completes pressure relief through the pressure relief pipe 400. Compared with the existing pressure increasing extraction valve, it has a pressure relief function, ensuring the use effect during the extraction process and facilitating the safe use of the equipment.

[0041] In a possible implementation, as Figures 4 - 5 shown, in order to install the pressure increasing valve 3 securely into the installation space 201, the pressure increasing valve 3 further includes a connecting sleeve 304 for installing the valve pipe 301;

[0042] The valve pipe 301 is inserted into the top of the connecting sleeve 304. The cavity inside the connecting sleeve 304 is communicated with the pressure increasing channel 302. An annular groove 4 is formed on the outer circumferential surface of the valve pipe 301, and a sealing ring 5 is provided on the annular groove 4. Thus, the connecting sleeve 304 can be sealed and installed at the water outlet end of the water connection joint 2. More specifically, the connecting sleeve 304 is sealed and installed into the installation space 201. At this time, the sealing ring 5 is in close contact with the inner wall of the installation space 201, ensuring that the hot water discharged from the inside of the water connection joint 2 can only flow along the pressure increasing channel 302 to the pressure increasing outlet 303 and finally be discharged from the pressure increasing outlet 303.

[0043] In a possible implementation, as Figures 3 - 5 shown, a support protrusion 6 is installed on the water outlet channel 101, and the water outlet channel 101 is located around the support protrusion 6. The bottom end of the connecting sleeve 304 is installed on the support protrusion 6. More specifically, the bottom end of the connecting sleeve 304 is sleeved on the support protrusion 6. In order to connect the inner cavity of the connecting sleeve 304 with the water outlet channel 101 so that the hot water discharged from the pressure increasing channel 302 can flow through the connecting sleeve 304 to the water outlet channel 101, a plurality of water discharge ports 7 are spaced apart at the bottom end of the connecting sleeve 304. The pressurized hot water discharged from the pressure increasing channel 302 can be discharged into the water outlet channel 101 through the plurality of water discharge ports 7 to complete water outlet.

[0044] In a possible implementation, as Figures 2 - 3 shown, an installation slot 8 is formed at the top of the mounting seat 1, and the bottom of the water connection joint 2 is detachably installed in the installation slot 8. Regarding the detachable structure, more specifically, the bottom of the water connection joint 2 is installed in the installation slot 8 by screws; a connecting seat is fixedly connected to the bottom end of the water connection joint 2, and the connecting seat is connected to the installation slot 8 by screws, thus realizing the detachable connection between the water connection joint 2 and the mounting seat 1, facilitating maintenance and replacement;

[0045] Alternatively, the bottom of the water connection joint 2 is installed into the installation slot 8 through a threaded structure. Specifically, the water connection joint 2 is provided with a threaded groove, and the installation slot 8 is provided with a threaded sleeve adapted to the threaded groove. The water connection joint 2 is detachably installed on the mounting base 1 through the threaded groove and the threaded sleeve;

[0046] Alternatively, the bottom of the water connection joint 2 is installed into the installation slot 8 through a clamping structure. A clamping buckle is fixedly connected to the bottom of the water connection joint 2, and a clamping groove adapted to the clamping buckle is formed in the installation slot 8. The water connection joint 2 is clamped onto the mounting base 1 through the cooperation of the clamping buckle and the clamping groove.

[0047] In a possible implementation, as Figure 3 shown, an annular groove II 11 is formed in the connecting seat at the bottom of the water connection joint 2, and a sealing ring II 12 is arranged in the annular groove II 11 to achieve sealed installation between the water connection joint 2 and the mounting base 1.

Claims

1. A pressure boosting device for coffee extraction in a coffee machine, characterized in that, Comprising: Mounting base (1); Water connection joint (2), provided at the top of the mounting base (1), the mounting base (1) is provided with a water outlet channel (101), and the water connection joint (2) is communicated with the water outlet channel (101); Pressurizing valve (3), including a valve pipe (301), a pressurizing channel (302) provided in the valve pipe (301) and a pressurizing outlet (303), the valve pipe (301) is provided between the water connection joint (2) and the water outlet channel (101), the water inlet of the pressurizing channel (302) is communicated with the water outlet of the water connection joint (2), and the pressurizing outlet (303) is opened on the bottom end surface of the valve pipe (301) to realize liquid pressurization; Pressure relief pipe (400), provided on the water connection joint (2), and the inner cavity of the pressure relief pipe (400) is communicated with the inner cavity of the water connection joint (2).

2. The pressure boosting device for coffee extraction of the coffee machine according to claim 1, wherein, The valve pipe (301) is sealed and installed at the water outlet end of the water connection joint (2).

3. The pressure boosting device for coffee extraction of the coffee machine according to claim 1 or 2, characterized in that It further includes a connecting sleeve (304) for installing the valve pipe (301); The valve pipe (301) is inserted into the top of the connecting sleeve (304), and the connecting sleeve (304) is sealed and installed at the water outlet end of the water connection joint (2).

4. The pressure boosting device for coffee extraction of a coffee machine according to claim 3, characterized in that, An annular groove one (4) is provided on the outer circumferential surface of the valve pipe (301), and a sealing ring one (5) is provided on the annular groove one (4).

5. The pressure boosting device for coffee extraction of a coffee machine according to claim 3, characterized in that, A support protrusion (6) is installed on the water outlet channel (101), the bottom end of the connecting sleeve (304) is installed on the support protrusion (6), and a plurality of water discharge ports (7) are provided at intervals at the bottom end of the connecting sleeve (304).

6. The pressure boosting device for coffee extraction of the coffee machine according to claim 3, characterized in that, An installation space (201) is provided at the bottom of the water connection joint (2), and the connecting sleeve (304) is sealed and installed in the installation space (201).

7. The pressure boosting device for coffee extraction of the coffee machine according to claim 1, characterized in that, An installation slot (8) is provided at the top of the mounting base (1), and the bottom of the water connection joint (2) is detachably installed in the installation slot (8).

8. The pressure boosting device for coffee extraction of a coffee machine according to claim 7, characterized in that, The bottom of the water connection joint (2) is installed in the installation slot (8) by screws; Or, the bottom of the water connection joint (2) is installed in the installation slot (8) by a threaded structure; Or, the bottom of the water connection joint (2) is installed in the installation slot (8) by a clamping structure.

9. The pressure boosting device for coffee extraction of the coffee machine according to claim 1, characterized in that, An inlet pipe (9) is connected to the water connection joint (2), and the inlet pipe (9) and the pressure relief pipe (400) are arranged in a Y shape.

10. The pressure boosting device for coffee extraction of the coffee machine according to claim 1, characterized in that, An installation interface (10) is provided at the bottom of the mounting base (1).

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