Pressure valve device
By designing a pressure valve device, which utilizes a one-way valve and a return flow path to achieve automatic pressure relief, the problem of complex and costly pressure regulation structures in existing coffee machines is solved. This achieves automatic pressure relief and precise pressure control, making it suitable for multi-functional coffee machines.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- QIU ZUXI
- Filing Date
- 2025-09-10
- Publication Date
- 2026-05-28
AI Technical Summary
Existing coffee machines have complex pressure regulation structures, high costs, and are inconvenient to use. In addition, conventional solenoid valve pressure relief structures increase equipment costs, and there is also the problem of water dripping from the outlet caused by the release of water pressure after extraction.
Design a pressure valve device including a solenoid valve, first and second valve bodies, and a return pipe. Automatic pressure relief is achieved by setting a one-way valve and a return path, avoiding the use of an additional solenoid valve, simplifying the pressure relief structure and reducing costs.
It achieves automatic pressure relief, avoiding the problem of water dripping at the outlet caused by water pressure release, reducing equipment costs, and can accurately control water pressure, making it suitable for pressure adjustment in multi-functional coffee machines.
Smart Images
Figure CN2025120352_28052026_PF_FP_ABST
Abstract
Description
Pressure valve device Technical Field
[0001] This application relates to water supply pipeline pressure regulation technology, and more specifically, to a pressure valve device. Background Technology
[0002] Coffee machines require pressurized hot water to extract coffee. To meet the diverse taste and quality preferences of different users, multi-functional coffee machines utilize pressure regulation mechanisms in the water circuit to provide hot water at varying pressures to the brewing chamber, resulting in coffee beverages with different flavors. However, existing pressure regulation mechanisms suffer from drawbacks such as complex structure, high cost, and inconvenience of use. To avoid dripping from the outlet due to pressure release after extraction, current coffee machines typically use a solenoid valve pressure relief mechanism, requiring one or more additional solenoid valves, further increasing equipment costs. Technical issues
[0003] The technical problem to be solved by this application is to provide a pressure valve device that can automatically relieve pressure and replace the conventional solenoid valve pressure relief structure, in view of the above-mentioned defects of the prior art. Technical solutions
[0004] The technical solution adopted by this application to solve its technical problem is as follows: a pressure valve device is proposed, comprising: a solenoid valve having a first energized and conductive port and a second port; a first valve body having a first valve cavity, a first inlet port, a first outlet port, and a first return port, one end of the first inlet port, the first outlet port, and the first return port being respectively connected to the first valve cavity, and the other end of the first outlet port being connected to the first port of the solenoid valve; and a second valve body having a second valve cavity, a second inlet port, a second outlet port, and a second return port. One end of the second inlet port, the second outlet port, and the second return port are respectively connected to the second valve chamber, and the other end of the second inlet port is connected to the second port of the solenoid valve; a return pipe has a first end and a second end, the first end of the return pipe is connected to the other end of the second return port, and the second end of the return pipe is connected to the other end of the first return port; a first one-way valve is provided on the return path from the second valve chamber through the second return port, the return pipe, and the first return port into the first valve chamber, so that the return path is only open in the direction from the second valve chamber to the first valve chamber.
[0005] According to one embodiment of the pressure valve device described in this application, one end of the first return port is connected to the first valve chamber via a first check valve that is open only in the direction from the first return port to the first valve chamber.
[0006] According to one embodiment of the pressure valve device described in this application, the second valve body is further provided with a pressure regulating port, one end of which is connected to the second valve chamber through a third check valve that is open only in the direction from the second valve chamber to the pressure regulating port.
[0007] According to one embodiment of the pressure valve device described in this application, the second valve body is further provided with a pressure regulating port, one end of which is connected to the second valve cavity, and the other end of which is externally connected to a pressure regulator.
[0008] In one embodiment of the pressure valve device according to this application, the first valve body is further provided with a multi-way expansion port communicating with the first valve chamber.
[0009] According to one embodiment of the pressure valve device described in this application, the pressure valve device further includes a second check valve disposed on the connection passage connecting the second water inlet port to the second valve chamber, such that the connection passage is open only in the direction from the second water inlet port to the second valve chamber.
[0010] According to one embodiment of the pressure valve device described in this application, one end of the second inlet port is connected to the second valve chamber via a second check valve that is open only in the direction from the second inlet port to the second valve chamber.
[0011] According to one embodiment of the pressure valve device described in this application, the first port and the second port of the solenoid valve are respectively located on opposite sides of the solenoid valve and are respectively connected to the first valve body and the second valve body located on both sides of the solenoid valve.
[0012] In one embodiment of the pressure valve device according to this application, the bottom of the solenoid valve is further provided with a wastewater outlet. Beneficial effects
[0013] The pressure valve device of this application has the following advantages: According to the embodiments of this application, a return flow path is provided between the first valve body and the second valve body, connecting their respective valve chambers. A first check valve is provided in this return flow path, operating only in the direction from the second valve chamber to the first valve chamber. When the load device connected to the second outlet port of the second valve body completes its work and the water flow stops, the water pressure inside the second valve body automatically opens the first check valve, immediately releasing pressure through the return flow path, thus avoiding the problem of water dripping from the outlet due to pressure release. The pressure valve device according to the embodiments of this application does not require an additional solenoid valve, making the pressure relief structure simple and convenient, and reducing equipment costs. Attached Figure Description
[0014] The present application will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:
[0015] Figure 1 is a schematic diagram of the overall structure of a pressure valve device according to an embodiment of this application;
[0016] Figure 2 is a partial cross-sectional view of the pressure valve device shown in Figure 1;
[0017] Figure 3 is a partial longitudinal section view of the first valve body in the pressure valve device shown in Figure 1;
[0018] Figure 4 is a partial longitudinal section view of the second valve body in the pressure valve device shown in Figure 1.
[0019] Reference numerals: 100 - Pressure valve device; 10 - Solenoid valve; 11 - First port; 12 - Second port; 13 - Wastewater outlet; 20 - First valve body; 21 - First valve chamber; 22 - First inlet port; 23 - First outlet port; 24 - First return port; 25 - First check valve; 26 - Multi-way expansion port; 30 - Second valve body; 31 - Second valve body; 32 - Second inlet port; 33 - Second check valve; 34 - Second outlet port; 35 - Pressure regulating port; 36 - Third check valve; 37 - Second return port; 40 - Return pipe; 41 - First end; 42 - Second end; 51, 52, 53, 54, 55 - Arrows. Embodiments of the present invention
[0020] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. Furthermore, the embodiments and features described herein can be combined with each other unless otherwise specified.
[0021] Figure 1 shows a schematic diagram of the overall structure of a pressure valve device 100 according to an embodiment of this application. As shown in Figure 1, the pressure valve device 100 mainly consists of a solenoid valve 10, a first valve body 20, a second valve body 30, and a return pipe 40. The first valve body 20 and the second valve body 30 are respectively disposed on opposite sides of the solenoid valve 10 and connected to the solenoid valve 10. A return pipe 40 is also connected between the first valve body 20 and the second valve body 30.
[0022] Referring to Figure 1 and Figure 2, the solenoid valve 10 is a three-way valve with a first port 11, a second port 12, and a wastewater outlet 13. The first port 11 and the second port 12 are located on opposite sides of the solenoid valve 10, respectively communicating with the first valve body 20 and the second valve body 30 located on the left and right sides of the solenoid valve 10. The wastewater outlet 13 is located at the bottom of the solenoid valve 10. When the solenoid valve 10 is energized, the first port 11 and the second port 12 are connected. When the solenoid valve 10 is de-energized, the first port 11 is connected to the wastewater outlet 13. Further referring to Figure 2 and Figure 3, the first valve body 20 has a first valve chamber 21, a first inlet port 22, a first outlet port 23, and a first return port 24. The first inlet port 22 extends laterally and is located on the front side of the first valve body 20. One end of the first inlet port 22 is connected to the first valve chamber 21, and the other end is connected to a water source, such as a water pump. The first outlet port 23 extends laterally and is located on the left side of the first valve body 20. One end of the first outlet port 23 is connected to the first valve chamber 21, and the other end is connected to the first port 11 of the solenoid valve 10. The first return port 24 extends longitudinally and is located at the lower part of the first valve body 20. One end of the first return port 24 is connected to the first valve chamber 21 through a first one-way valve 25. The first one-way valve 25 only opens the passage between the first return port 24 and the first valve chamber 21 in the direction from the first return port 24 to the first valve chamber 21. The other end of the first return port 24 is connected to the second end 42 of the return pipe 40.
[0023] Referring again to Figures 2 and 4, the second valve body 30 has a second valve cavity 31, a second inlet port 32, a second outlet port 34, and a second return port 37. The second inlet port 32 extends laterally and is located on the right side of the second valve body 30. One end of the second inlet port 32 is connected to the second valve cavity 31 through a second one-way valve 33. The second one-way valve 33 only opens the passage between the second inlet port 32 and the second valve cavity 31 in the direction from the second inlet port 32 to the second valve cavity 31. The other end of the second inlet port 32 is connected to the second port 12 of the solenoid valve 10 to receive the water flow delivered from the first outlet port 23 of the first valve body 20 through the solenoid valve 10 when the solenoid valve 10 is energized. The second outlet port 34 extends longitudinally and is located at the lower part of the second valve body 30. One end of the second outlet port 34 is connected to the second valve cavity 31, and the other end extends laterally from the lower part of the second valve body 30 to facilitate connection of an external load device. The second return port 37 extends laterally and is disposed on the rear side of the second valve body 30. One end of the second return port 37 is connected to the second valve cavity 31, and the other end is connected to the first end 41 of the return pipe 40. Then, it is connected to the first return port 24 of the first valve body 10 through the second end 42 of the return pipe 40.
[0024] In this pressure valve device 100, water flows into the first valve chamber 21 from the first inlet port 22 of the first valve body 20 (see arrow 51 in Figure 1). Due to the presence of the first check valve 25, water can only flow into the solenoid valve 10 from the first outlet port 23 via the first port 11. When the solenoid valve 10 is energized, it connects the first port 11 and the second port 12. Water flows through the second port 12 into the second inlet port 32 of the second valve body 30. The water pressure opens the second check valve 33, allowing water to flow into the second valve chamber 31, and then through the second outlet port 34 into the external load device to perform work (see arrow 52 in Figure 1). The load device requires different pressures under different conditions, necessitating pressure regulation. Therefore, as shown in Figure 2, the second valve body 30 is also equipped with a pressure regulating port 35. The pressure regulating port 35 extends laterally and is located on the front side of the second valve body 30. One end of the pressure regulating port 35 is connected to the second valve chamber 31 via a third check valve 36. The third check valve 36 only opens the passage between the second valve chamber 31 and the pressure regulating port 35 in the direction from the second valve chamber 31 to the pressure regulating port 35, thus serving as a pressure relief device for a constant pressure water circuit system (see arrow 53 in Figure 1). According to different embodiments of this application, the third check valve 36 is optional. The third check valve 36 may not be provided between the pressure regulating port 35 and the second valve chamber 31. By connecting a pressure regulator to the other end of the pressure regulating port 35, a real-time variable pressure water circuit system can also be realized, which has a wider range of applications. When the load device finishes its work and the water flow stops, the solenoid valve 10 is de-energized, opening the first port 11 and the wastewater outlet 13. The water pressure in the second valve body 30 automatically releases pressure by opening the first one-way valve 25 through the return path formed by the second return port 37, the return pipe 40, and the first return port 24. The wastewater in the second valve body 30 is discharged from the wastewater outlet 13 of the solenoid valve 10 through the return path (see arrow 55 in Figure 1). The pressure valve device 100 according to the above embodiment of this application can automatically release water pressure after the load finishes its work, thereby avoiding the problem of dripping water at the second outlet port 34. The water path of the pressure valve device 100 according to the above embodiment of this application can be set to a maximum output pressure, thereby precisely controlling the specific optimal pressure for extraction by the load device, such as a coffee machine. In addition, the pressure regulating port 35, in conjunction with a visual pressure gauge and a pressure regulating valve, allows for manual pressure adjustment, enabling professional baristas to manually fine-tune the pressure for different coffees, maximizing the taste and quality of the coffee.
[0025] According to a further embodiment of this application, referring to Figures 1 and 2, the first valve body 10 is further provided with a multi-way expansion port 26. One end of the multi-way expansion port 26 is connected to the first valve chamber 21, and the other end can be connected to an expansion water path with a conduction pressure lower than that of the second check valve 33 (see arrow 54 in Figure 1). When the water flow pressure entering the first valve body 20 from the first input port 22 is lower than the conduction pressure of the second check valve 33 between the second inlet port 32 of the second valve body 30 and the second valve chamber 31, the water flow will enter the expansion water path from the multi-way expansion port 26, realizing the function of multiple pressure outputs of a single pressure valve device. Therefore, if the first valve body 10 is not provided with a multi-way expansion port 26, the second check valve 33 is not necessary.
[0026] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A pressure valve device (100), characterized in that, include: Solenoid valve (10), the solenoid valve (10) has a first port (11) and a second port (12) that are energized and open. The first valve body (20) has a first valve cavity (21), a first water inlet port (22), a first water outlet port (23) and a first return port (24). One end of the first water inlet port (22), the first water outlet port (23) and the first return port (24) are respectively connected to the first valve cavity (21), and the other end of the first water outlet port (23) is connected to the first port (11) of the solenoid valve (10). The second valve body (30) has a second valve cavity (31), a second water inlet port (32), a second water outlet port (34), and a second return port (37). One end of the second water inlet port (32), the second water outlet port (34), and the second return port (37) are respectively connected to the second valve cavity (31), and the other end of the second water inlet port (32) is connected to the second port (12) of the solenoid valve (10). A return pipe (40) has a first end (41) and a second end (42). The first end (41) of the return pipe (40) is connected to the other end of the second return port (37), and the second end (42) of the return pipe (40) is connected to the other end of the first return port (24). The first one-way valve (25) is disposed on the return flow path from the second valve chamber (31) through the second return port (37), the return pipe (40) and the first return port (24) into the first valve chamber (21), so that the return flow path is only open in the direction from the second valve chamber (31) to the first valve chamber (21).
2. The pressure valve device (100) according to claim 1, characterized in that, One end of the first return port (24) is connected to the first valve chamber (21) via a first check valve (25) that is open only in the direction from the first return port (24) to the first valve chamber (21).
3. The pressure valve device (100) according to claim 1, characterized in that, The second valve body (30) is also provided with a pressure regulating port (35), one end of which is connected to the second valve chamber (31) through a third check valve (36) that is open only in the direction from the second valve chamber (31) to the pressure regulating port (35).
4. The pressure valve device (100) according to claim 1, characterized in that, The second valve body (30) is also provided with a pressure regulating port (35), one end of which is connected to the second valve chamber (31), and the other end of which is connected to a pressure regulator.
5. The pressure valve device (100) according to claim 1, characterized in that, The first valve body (20) is also provided with a multi-way expansion port (26) that communicates with the first valve chamber (21).
6. The pressure valve device (100) according to claim 5, characterized in that, The pressure valve device further includes a second check valve, which is disposed on the connection passage connecting the second water inlet port to the second valve chamber, so that the connection passage is open only in the direction from the second water inlet port to the second valve chamber.
7. The pressure valve device (100) according to claim 6, characterized in that, One end of the second water inlet port (32) is connected to the second valve chamber (32) through a second check valve (33) that is open only in the direction from the second water inlet port (32) to the second valve chamber (31).
8. The pressure valve device (100) according to claim 1, characterized in that, The first port (11) and the second port (12) of the solenoid valve (10) are respectively located on opposite sides of the solenoid valve (10) and are respectively connected to the first valve body (20) and the second valve body (30) located on both sides of the solenoid valve (10).
9. The pressure valve device (100) according to claim 1, characterized in that, The bottom of the solenoid valve (10) is also provided with a wastewater outlet (13).