Pressure regulating valve and coffee machine

Abstract

The utility model relates to a pressure regulating valve and a coffee machine, and belongs to the field of household appliances. A liquid inlet assembly; the variable-pressure valve body is provided with a liquid passing channel, the variable-pressure valve body is provided with at least one valve hole communicated with the liquid passing channel, and the liquid inlet assembly is arranged on the variable-pressure valve body; the variable-pressure valve rod assembly is arranged on the variable-pressure valve body, the variable-pressure valve rod assembly extends into the liquid passing channel, the variable-pressure valve rod assembly can move in the liquid passing channel, and the valve hole can be blocked or opened when the variable-pressure valve rod assembly moves in the liquid passing channel; and the number of the valve body assemblies is the same as that of the valve holes, and the valve body assemblies are arranged on the variable-pressure valve body and block the valve holes. The utility model discloses a pressure regulating valve which is used for a coffee machine, a user can control water pressure in the coffee machine by changing multi-section pressure of the pressure regulating valve, and playability of the coffee machine is improved.

Description

Technical Field

[0001] The utility model relates to the field of household appliances, in particular to a pressure regulating valve and a coffee machine. Background Art

[0002] With the development of economy and the improvement of people's living standards, people's requirements for quality of life are getting higher and higher, making coffee machines gradually become a must-have for most residents. In the prior art, the pressure regulating valve of the coffee machine cannot perform multi-stage pressure adjustment, so that users cannot accurately control the pressure of coffee extraction, resulting in poor coffee products. At the same time, the inaccurate pressure control also poses the risk of damaging other internal components of the coffee machine, shortening the service life of the coffee machine. Utility Model Content

[0003] Based on this, it is necessary to provide a pressure regulating valve and a coffee machine to address the problem that the pressure regulating valve of the coffee machine cannot adjust the pressure in multiple stages.

[0004] A pressure regulating valve for a coffee machine, the pressure regulating valve comprising: a liquid inlet assembly, the liquid inlet assembly being provided with a liquid inlet and a liquid outlet; a pressure-changing valve body, the pressure-changing valve body being provided with a liquid passage, the pressure-changing valve body being provided with at least one valve hole communicating with the liquid passage, the liquid inlet assembly being arranged on the pressure-changing valve body, the liquid inlet assembly being communicated with the liquid passage; a pressure-changing valve stem assembly, the pressure-changing valve stem assembly being arranged on the pressure-changing valve body, the pressure-changing valve stem assembly extending into the liquid passage, the pressure-changing valve stem assembly being movable in the liquid passage, and the pressure-changing valve stem assembly being capable of blocking or opening the valve hole when moving in the liquid passage; and at least one valve body assembly, the number of the valve body assemblies being the same as the number of the valve holes, the valve body assembly being arranged on the pressure-changing valve body and blocking the valve hole.

[0005] The present application discloses a pressure regulating valve, wherein a liquid inlet assembly is arranged on a pressure-changing valve body, and a liquid inlet and a liquid outlet are arranged on the liquid inlet assembly, so that liquid can smoothly enter the pressure-changing valve body through the liquid inlet, and a plurality of valve holes are arranged on the pressure-changing valve body, and a plurality of valve body assemblies are arranged one by one at the valve holes, and then by using a pressure-changing valve stem assembly arranged in a liquid passage in the pressure-changing valve body, the liquid in the pressure regulating valve can be hydraulically adjusted, and the user can adjust the position in the liquid passage by rotating the pressure-changing valve stem assembly to achieve the purpose of blocking or opening the valve hole, so that the liquid in the pressure regulating valve flows into any valve body assembly through the valve hole, and each valve body assembly is used to adjust different hydraulic pressures, depending on the actual needs of the user. This structure greatly increases the user's participation and improves the user's experience, and can ensure that the water pressure during coffee extraction is stable within an ideal range, and can adjust the pressure according to different coffee beans to achieve the best extraction effect, and when the system has abnormal pressure, the pressure regulating valve can release the pressure in time to prevent the excessive water pressure from damaging the internal components of the coffee machine and extend the service life of the coffee machine.

[0006] In one embodiment, there are multiple valve holes, which are sequentially arranged along the length direction of the liquid passage, and there are multiple valve body assemblies, which respectively block the multiple valve holes. By arranging multiple valve holes along the length direction of the liquid passage, and correspondingly blocking multiple valve holes with multiple valve body assemblies, the main function of the pressure regulating valve is realized, and users can use different valve body assemblies to more finely adjust the flow of liquid in the liquid passage according to their actual needs. The valve holes arranged along the length of the liquid passage can realize segmented pressure control. The opening or closing of valve holes at different positions can change the pressure on the liquid at different parts of the channel, and combine multiple flow modes, thereby affecting the extraction effect of coffee, and meeting the coffee brewing needs of different users.

[0007] In one of the embodiments, both ends of the liquid passage are open, the liquid inlet assembly and the pressure-changing valve stem assembly are respectively arranged on the liquid passage and located at the two end openings of the liquid passage, the pressure-changing valve stem assembly can move along the length direction of the liquid passage, and when the pressure-changing valve stem assembly moves along the liquid passage, the plurality of valve holes can be connected to the liquid passage respectively, and along the direction of the liquid inlet assembly toward the pressure-changing valve stem assembly, the opening pressures of the plurality of valve body assemblies are reduced successively. By respectively arranging the liquid inlet assembly and the pressure-changing valve stem assembly at the openings at both ends of the liquid passage, the user can manipulate the pressure-changing valve stem assembly to move along the length direction of the liquid passage, and can control the opening and closing of the valve hole arranged on the pressure-changing valve body. Since the opening pressure of the valve body assembly decreases successively as the pressure-changing valve stem assembly is moved out, the user can move the pressure-changing valve stem assembly to the valve port close to the liquid inlet assembly and open the valve port when a larger pressure needs to be released. At this time, the liquid flows out from the valve body assembly arranged at the valve port. When a smaller pressure needs to be released, the pressure-changing valve stem assembly can be moved to the bottom. At this time, the liquid flows out from the valve body assembly with the smallest opening pressure. The multi-stage pressure control makes the pressure regulating valve meet the user's usage needs.

[0008] In one embodiment, the liquid inlet assembly is integrally formed, the liquid inlet assembly is provided with a liquid inlet channel, and the liquid inlet and the liquid outlet are sequentially connected to the liquid inlet channel. By integrally forming the liquid inlet assembly, the liquid inlet, the liquid outlet and the liquid inlet channel of the liquid inlet assembly are sequentially connected, so that the basic function of liquid in and out of the pressure regulating valve is achieved. The integral forming avoids the weak links that may be generated when multiple components are spliced. Since there is no splicing gap, the possibility of liquid leakage is greatly reduced, making the overall structure of the liquid inlet assembly more solid, able to withstand higher pressure and more frequent use, and reducing the risk of damage.

[0009] In one embodiment, the liquid inlet assembly includes a liquid inlet part and a liquid outlet part, the liquid inlet part is provided with a liquid inlet, the liquid outlet part is provided with a liquid outlet, and the liquid inlet and the liquid outlet are connected with the liquid inlet channel in sequence. By separating the liquid inlet assembly into a liquid inlet part and a liquid outlet part, and providing a liquid inlet on the first liquid inlet part and a liquid outlet on the second liquid inlet part, the liquid inlet, the liquid outlet and the liquid inlet channel of the liquid inlet assembly are connected in sequence, thereby realizing the basic function of liquid in and out of the pressure regulating valve. The separate setting facilitates daily maintenance and overhaul. When a certain component fails or is damaged, it can be repaired or replaced separately without replacing the entire liquid inlet assembly as a whole, thereby reducing maintenance costs and time.

[0010] In one embodiment, the number of valve holes is two, the two valve holes are a first valve hole and a second valve hole, the number of valve body assemblies is two, the two valve body assemblies are a first valve body assembly and a second valve body assembly, the first valve body assembly is arranged on the pressure-changing valve body and located at the first valve hole, the first valve body assembly is provided with a first liquid inlet, the second valve body assembly is arranged on the pressure-changing valve body and located at the second valve hole, the second valve body assembly is provided with a second liquid inlet, the pressure-changing valve stem assembly has at least a first position and a second position relative to the pressure-changing valve body, when the pressure-changing valve stem assembly is located at the first position, the liquid passage is connected to the first liquid inlet and the second liquid inlet is separated from the liquid passage, and when the pressure-changing valve stem assembly is located at the second position, the liquid passage is connected to the first liquid inlet and the second liquid inlet is respectively connected. By arranging the first valve body assembly on the pressure-changing valve body and being located at the first valve hole, and arranging the second valve body assembly on the pressure-changing valve body and being located at the second valve hole, when the pressure-changing valve stem assembly is moved to the first position relative to the pressure-changing valve body, the liquid passage is communicated with the first liquid inlet provided by the first valve body assembly, at which time the liquid enters the first valve body assembly through the first liquid inlet from the liquid passage, and flows out from the first valve body assembly to achieve a large pressure relief, and when the pressure-changing valve stem assembly is moved to the second position relative to the pressure-changing valve body, the liquid passage is communicated with the first liquid inlet and the second liquid inlet provided by the second valve body assembly, at which time the liquid flows into the first valve body assembly and the second valve body assembly respectively through the liquid passage, and since the opening pressure of the second valve body assembly is less than that of the first valve body assembly, the liquid flows out from the second valve body assembly to achieve a small pressure relief. By arranging multiple valve body assemblies, the hydraulic pressure can be controlled more precisely, and the pressure of the coffee machine can be adjusted according to the user's preference to make coffee that suits their taste. At the same time, this structure effectively maintains the stability of the internal pressure of the coffee machine, which helps to improve the stability and reliability of the entire coffee machine and reduce the possibility of failure.

[0011] In one embodiment, it also includes a first pressure relief sealing ring, and the pressure-changing valve stem assembly can be separated from or offset against the first pressure relief sealing ring. The first pressure relief sealing ring is located between the first liquid inlet and the liquid inlet, and the liquid inlet assembly is provided with a liquid inlet channel. When the pressure-changing valve stem assembly is offset against the first pressure relief sealing ring, the liquid passage is separated from the liquid inlet channel, and the pressure-changing valve stem assembly closes the first liquid inlet. When the pressure-changing valve stem assembly is separated from the first pressure relief sealing ring and moves to the first position or the second position, the liquid passage is connected to the liquid inlet channel, and the pressure-changing valve stem assembly opens the first liquid inlet. By arranging the first pressure relief sealing ring between the first liquid inlet and the liquid inlet, and using the pressure-changing valve stem assembly to adjust the position with the first pressure relief sealing ring, when the pressure-changing valve stem assembly abuts against the first pressure relief sealing ring, the liquid passage and the liquid inlet passage are separated, and the first liquid inlet is closed at this time, and the liquid flows out directly from the pressure regulating valve without pressure relief, and when the pressure-changing valve stem assembly separates from the first pressure relief sealing ring and moves to the first position, the liquid passage and the liquid inlet passage are connected, and the pressure-changing valve stem assembly opens the first liquid inlet, and the liquid flows out from the first valve body assembly at this time, thereby achieving a greater pressure relief purpose.

[0012] In one embodiment, it also includes a second pressure relief sealing ring, which is located between the first valve hole and the second valve hole. The pressure-changing valve stem assembly can be separated from or against the second pressure relief sealing ring. When the end of the pressure-changing valve stem assembly is against the second pressure relief sealing ring and the end of the pressure-changing valve stem assembly is located between the first valve hole and the second valve hole, the liquid passage is connected to the first liquid inlet, and the pressure-changing valve stem assembly closes the second liquid inlet. When the pressure-changing valve stem assembly is separated from the second pressure relief sealing ring and moves to the second position, the liquid passage is connected to the second liquid inlet and the first liquid inlet respectively. By arranging the second pressure relief sealing ring between the first valve hole and the second valve hole, when the end of the pressure-changing valve stem assembly abuts against the second pressure relief sealing ring and the end of the pressure-changing valve stem assembly is located between the first valve hole and the second valve hole, the liquid passage is only connected with the first liquid inlet, and the second liquid inlet is closed, so the liquid flows into the first liquid inlet and flows out from the first valve body assembly; when the pressure-changing valve stem assembly is separated from the second pressure relief sealing ring and moves to the second position, the second liquid inlet is opened, and the liquid passage is respectively connected with the second liquid inlet and the first liquid inlet, at which time the liquid flows from the second liquid inlet into the second valve body assembly and flows out from the valve, thereby achieving a smaller pressure relief purpose.

[0013] In one embodiment, the first valve body assembly includes a first valve body shell, a first valve body and a first spring. The first valve body shell is arranged on the variable pressure valve body. The first valve body shell is provided with a first liquid inlet channel connected with the first liquid inlet. The first spring is located in the first liquid inlet channel. One end of the first spring abuts against the first valve body and the other end abuts against the cavity wall of the first liquid inlet channel. The first valve body can open or close the first liquid inlet channel. By arranging the first valve body shell on the variable pressure valve body, the first liquid inlet channel provided in the first valve body shell is connected with the first liquid inlet. When the liquid is about to enter the first liquid inlet channel from the first liquid inlet, the first spring arranged in the first liquid inlet channel is compressed, and at the same time drives the first valve body arranged on the first spring to move downward, the first liquid inlet channel is opened, so that the liquid flows from the first liquid inlet channel to the outside of the first valve body assembly, and the pressure relief process is completed. This structural design effectively maintains the stability of the internal pressure of the coffee machine, prevents the internal pressure of the coffee machine from being too high and damaging the components, avoids explosions or other dangerous situations caused by excessive pressure, protects the personal safety of users, helps to improve the stability and reliability of the entire coffee machine, and reduces the possibility of failure.

[0014] In one embodiment, the second valve body assembly includes a second valve body shell, a second valve body and a second spring. The second valve body shell is arranged on the pressure-changing valve body. The second valve body shell is provided with a second liquid inlet channel connected to the second liquid inlet port. The second spring is located in the second liquid inlet channel. One end of the second spring abuts against the second valve body and the other end abuts against the cavity wall of the second liquid inlet channel. The second valve body can open or close the second liquid inlet channel. By arranging the second valve body shell on the pressure-changing valve body, the second liquid inlet channel provided in the first valve body shell is connected with the second liquid inlet port. When liquid enters the second liquid inlet channel from the second liquid inlet port, the second spring provided in the second liquid inlet channel is compressed, and at the same time drives the second valve body provided in the second spring to move downward, and the second liquid inlet channel is opened, so that the liquid flows from the second liquid inlet channel to the outside of the second valve body assembly, completing the pressure relief process. This structural design effectively maintains the stability of the internal pressure of the coffee machine, prevents the internal pressure of the coffee machine from being too high and damaging the components, avoids explosions or other dangerous situations caused by excessive pressure, protects the personal safety of users, helps to improve the stability and reliability of the entire coffee machine, and reduces the possibility of failure. At the same time, multiple pressure relief valves increase the path and reliability of pressure release, further reducing the risk of excessive pressure due to failure of a single pressure relief valve, greatly improving safety during use.

[0015] In one embodiment, the pressure-changing valve body includes a pressure-changing valve body and a pressure-changing valve cover, the pressure-changing valve cover is arranged on the pressure-changing valve body, the pressure-changing valve stem assembly is arranged on the pressure-changing valve cover and the pressure-changing valve stem assembly is passed through the pressure-changing valve cover, and the pressure-changing valve body is provided with the liquid passage. By arranging the pressure-changing valve cover on the pressure-changing valve body, on the one hand, it provides protection for the components inside the pressure-changing valve body, prevents external dust, impurities and moisture from invading the liquid passage provided in the pressure-changing valve body, thereby ensuring the cleanliness and normal operation of the valve, and further, the close combination of the pressure-changing valve cover and the pressure-changing valve body helps to enhance the sealing of the entire pressure regulating valve, prevents liquid from leaking when the pressure changes, which is crucial to maintaining the pressure stability and operating efficiency of the system, and finally, the pressure-changing valve cover can increase the overall strength and rigidity of the pressure-changing valve body, so that it can withstand greater pressure and external forces, and reduce the risk of deformation and damage. The variable pressure valve stem assembly is arranged on the variable pressure valve cover and penetrated through the variable pressure valve cover, so that the overall structure of the coffee machine is more compact, and at the same time, it is more convenient for the user to directly operate the variable pressure valve stem assembly from the outside to adjust the pressure without complicated disassembly or deep adjustment inside the machine.

[0016] In one embodiment, the pressure-changing valve cover comprises a valve cover body, a first sealing ring and a second sealing ring, wherein the valve cover body is arranged on the pressure-changing valve body, the first sealing ring is arranged on the valve cover body and / or the pressure-changing valve body, and the second sealing ring is arranged on the valve cover body and / or the pressure-changing valve stem assembly. By arranging the valve cover body on the pressure-changing valve body and arranging the first sealing ring provided on the pressure-changing valve cover in the gap between the valve cover body and the pressure-changing valve body, it is ensured that the liquid inside the pressure-changing valve body will not leak, so that the pressure regulating valve can more accurately control and adjust the internal pressure, and at the same time, the first sealing ring can reduce the wear of the valve cover body and the pressure-changing valve body during contact and relative movement, and reduce the friction loss between the components. The second sealing ring provided on the pressure-changing valve cover is arranged between the valve cover body and the pressure-changing valve stem assembly, which can effectively prevent the pressure from escaping from around the valve stem and causing pressure leakage. At the same time, the second sealing ring plays a certain role in lubrication and buffering, reduces the friction and wear generated when the valve cover body and the pressure-changing valve stem assembly move relative to each other, and prolongs the service life of the pressure-changing valve stem assembly. The two sealing rings effectively ensure the stability of the pressure inside the pressure regulating valve, thereby providing stable and appropriate pressure conditions for the coffee machine to extract coffee and ensuring the smooth progress of the coffee extraction process.

[0017] A second aspect of the present application discloses a coffee machine, comprising: the above-mentioned pressure regulating valve; and a coffee system, wherein the pressure regulating valve is arranged on the coffee system.

[0018] The second aspect of the present application discloses a coffee machine. By utilizing the above-mentioned pressure regulating valve, firstly, sufficient safety protection is provided for the water pump of the coffee machine, ensuring that the coffee system can operate stably under abnormal circumstances and prolonging the service life. Secondly, the water pressure inside the coffee machine can be adjusted and the pressure can be adjusted in multiple stages to ensure that the pressure can be kept within a suitable range during the extraction process, thereby obtaining the best extraction effect. At the same time, it is convenient for users to adjust to the most suitable extraction pressure according to their preferences and the characteristics of coffee beans. By stabilizing the extraction pressure, the pressure regulating valve helps to improve the extraction efficiency of coffee, ensuring that each cup of coffee can achieve the best taste and quality in a short time, thereby improving user satisfaction with the coffee machine and improving the market competitiveness of the coffee machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of a pressure regulating valve;

[0020] Figure 2 is a first cross-sectional view of the pressure regulating valve;

[0021] Figure 3 is a second cross-sectional view of the pressure regulating valve;

[0022] Figure 4 is a cross-sectional view of a pressure-changing valve body;

[0023] Figure 5 is a third cross-sectional view of the pressure regulating valve;

[0024] Figure 6 is a fourth cross-sectional view of the pressure regulating valve;

[0025] Figure 7 It is the fifth cross-sectional view of the pressure regulating valve.

[0026] The corresponding relationship between the reference numerals and the component names is as follows:

[0027] 1 liquid inlet assembly, 101 liquid inlet, 102 liquid outlet, 103 liquid inlet channel;

[0028] 2 pressure-changing valve body, 21 pressure-changing valve body, 22 pressure-changing valve cover, 221 valve cover body, 222 first sealing ring, 223 second sealing ring, 201 liquid passage, 202 first valve hole, 203 second valve hole;

[0029] 3. Transformer valve stem assembly;

[0030] 4 first valve body assembly, 41 first valve body shell, 42 first valve body, 43 first spring, 401 first liquid inlet, 402 first liquid inlet channel;

[0031] 5 second valve body assembly, 51 second valve body shell, 52 second valve body, 53 second spring, 501 second liquid inlet, 502 second liquid inlet channel;

[0032] 6. The first pressure relief sealing ring;

[0033] 7 Second pressure relief sealing ring. DETAILED DESCRIPTION

[0034] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0036] The pressure regulating valve and the coffee machine according to some embodiments of the present invention will be described below with reference to the accompanying drawings.

[0037] Example 1

[0038] like Figures 1 to 7 As shown, this embodiment discloses a pressure regulating valve for a coffee machine, comprising: a liquid inlet assembly 1, the liquid inlet assembly 1 is provided with a liquid inlet port 101 and a liquid outlet port 102; a pressure-changing valve body 2, the pressure-changing valve body 2 is provided with a liquid passage 201, the pressure-changing valve body 2 is provided with at least one valve hole connected with the liquid passage 201, the liquid inlet assembly 1 is arranged on the pressure-changing valve body 2, and the liquid inlet assembly 1 is connected with the liquid passage 201; a pressure-changing valve stem assembly 3, the pressure-changing valve stem assembly 3 is arranged on the pressure-changing valve body 2, the pressure-changing valve stem assembly 3 extends into the liquid passage 201, the pressure-changing valve stem assembly 3 can move in the liquid passage 201, and the pressure-changing valve stem assembly 3 can block or open the valve hole when moving in the liquid passage 201; at least one valve body assembly, the number of the valve body assemblies is the same as the number of the valve holes, the valve body assembly is arranged on the pressure-changing valve body 2 and blocks the valve hole.

[0039] The present application discloses a pressure regulating valve, wherein a liquid inlet assembly 1 is arranged on a pressure-changing valve body 2, and a liquid inlet port 101 and a liquid outlet port 102 are provided on the liquid inlet assembly 1, so that liquid can smoothly enter the pressure-changing valve body 2 through the liquid inlet port 101, and at the same time, a plurality of valve holes are arranged on the pressure-changing valve body 2, and a plurality of valve body assemblies are arranged at the valve holes in a one-to-one correspondence, and then by utilizing a pressure-changing valve stem assembly 3 of a liquid passage 201 arranged in the pressure-changing valve body 2, the liquid in the pressure regulating valve can be hydraulically adjusted, and the user can adjust the position in the liquid passage 201 by rotating the pressure-changing valve stem assembly 3 to achieve the purpose of blocking or opening the valve hole, so that the liquid in the pressure regulating valve can flow into any valve body assembly through the valve hole, and each valve body assembly is used to adjust different hydraulic pressures, depending on the actual needs of the user. This structure greatly increases user participation and improves user experience. At the same time, it can ensure that the water pressure when extracting coffee is stable within the ideal range. The pressure can be adjusted according to different coffee beans to achieve the best extraction effect. At the same time, when abnormal pressure appears in the system, the pressure regulating valve can release the pressure in time to prevent excessive water pressure from damaging the internal components of the coffee machine and extend the service life of the coffee machine.

[0040] like Figure 2 and Figure 4 As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: there are multiple valve holes, and the multiple valve holes are sequentially arranged along the length direction of the liquid passage 201; there are multiple valve body assemblies, and the multiple valve body assemblies respectively block the multiple valve holes. By arranging multiple valve holes along the length direction of the liquid passage 201, and correspondingly blocking the multiple valve holes with multiple valve body assemblies, the main function of the pressure regulating valve is realized, and the user can use different valve body assemblies to more finely adjust the flow of the liquid in the liquid passage 201 according to their actual needs. The valve holes arranged along the length of the liquid passage 201 can realize segmented pressure control. The opening or closing of the valve holes at different positions can change the pressure on the liquid at different parts of the channel, and combine multiple flow modes, thereby affecting the extraction effect of coffee, and meeting the coffee brewing needs of different users.

[0041] like Figure 1 , Figure 2 and Figure 4As shown, in addition to the features of the above-mentioned embodiments, this embodiment is further defined as follows: both ends of the liquid passage 201 are open, the liquid inlet assembly 1 and the pressure-changing valve stem assembly 3 are respectively arranged on the liquid passage 201 and located at the two end openings of the liquid passage 201, the pressure-changing valve stem assembly 3 can move along the length direction of the liquid passage 201, and when the pressure-changing valve stem assembly 3 moves along the liquid passage 201, multiple valve holes can be connected to the liquid passage 201 respectively, and along the direction of the liquid inlet assembly 1 toward the pressure-changing valve stem assembly 3, the opening pressures of the multiple valve body assemblies are reduced successively. By respectively arranging the liquid inlet assembly 1 and the pressure-changing valve stem assembly 3 at the openings at both ends of the liquid passage 201, the user can manipulate the pressure-changing valve stem assembly 3 to move along the length direction of the liquid passage 201, and can control the opening and closing of the valve hole arranged on the pressure-changing valve body 2. Since the opening pressure of the valve body assembly decreases successively with the movement of the pressure-changing valve stem assembly 3, the user can move the pressure-changing valve stem assembly 3 to the valve port close to the liquid inlet assembly 1 and open the valve port when a larger pressure needs to be released. At this time, the liquid flows out from the valve body assembly arranged at the valve port. When a smaller pressure needs to be released, the pressure-changing valve stem assembly 3 can be moved to the bottom. At this time, the liquid flows out from the valve body assembly with the smallest opening pressure. The multi-stage pressure control makes the pressure regulating valve meet the user's usage needs.

[0042] like Figure 1 and Figure 2 As shown, in addition to the features of the above-mentioned embodiments, this embodiment further defines that: the liquid inlet assembly 1 is integrally formed, the liquid inlet assembly 1 is provided with a liquid inlet channel 103, and the liquid inlet port 101 and the liquid outlet port 102 are sequentially connected with the liquid inlet channel 103. By integrally forming the liquid inlet assembly 1, the liquid inlet port 101, the liquid outlet port 102 and the liquid inlet channel 103 of the liquid inlet assembly 1 are sequentially connected, so that the basic function of liquid in and out of the pressure regulating valve is achieved. The integral forming avoids the weak links that may be generated when multiple components are spliced. Since there is no splicing gap, the possibility of liquid leakage is greatly reduced, so that the overall structure of the liquid inlet assembly 1 is more solid, and can withstand higher pressure and more frequent use, reducing the risk of damage.

[0043] like Figure 7As shown, in addition to the features of the above-mentioned embodiments, this embodiment further defines that: the liquid inlet component 1 includes a liquid inlet part and a liquid outlet part, the liquid inlet part is provided with a liquid inlet 101, the liquid outlet part is provided with a liquid outlet 102, and the liquid inlet 101, the liquid outlet 102 and the liquid inlet channel 103 are connected in sequence. By separating the liquid inlet component 1 into a liquid inlet part and a liquid outlet part, and providing a liquid inlet 101 on the first liquid inlet part and a liquid outlet 102 on the second liquid inlet part, the liquid inlet 101, the liquid outlet 102 and the liquid inlet channel 103 of the liquid inlet component 1 are connected in sequence, thereby realizing the basic function of liquid in and out of the pressure regulating valve. The separate setting facilitates daily maintenance and overhaul. When a certain component fails or is damaged, it can be repaired or replaced separately without replacing the entire liquid inlet component 1 as a whole, thereby reducing maintenance costs and time.

[0044] like Figure 4 , Figure 5 and Figure 6As shown, in addition to the features of the above embodiments, the present embodiment further defines: the number of valve holes is two, the two valve holes are the first valve hole 202 and the second valve hole 203, the number of valve body assemblies is two, the two valve body assemblies are the first valve body assembly 4 and the second valve body assembly 5, the first valve body assembly 4 is arranged on the pressure-changing valve body 2 and located at the first valve hole 202, the first valve body assembly 4 is provided with a first liquid inlet 401, the second valve body assembly 5 is arranged on the pressure-changing valve body 2 and located at the second valve hole 203, the second valve body assembly 5 is provided with a second liquid inlet 501, the pressure-changing valve stem assembly 3 has at least a first position and a second position relative to the pressure-changing valve body 2, when the pressure-changing valve stem assembly 3 is located at the first position, the liquid passage 201 is communicated with the first liquid inlet 401 and the second liquid inlet 501 is separated from the liquid passage 201, when the pressure-changing valve stem assembly 3 is located at the second position, the liquid passage 201 is communicated with the first liquid inlet 401 and the second liquid inlet 501 is separated from the liquid passage 201, and when the pressure-changing valve stem assembly 3 is located at the second position, the liquid passage 201 is communicated with the first liquid inlet 401 and the second liquid inlet 501 are respectively communicated with. By arranging the first valve body assembly 4 on the pressure-changing valve body 2 and being located at the first valve hole 202, and arranging the second valve body assembly 5 on the pressure-changing valve body 2 and being located at the second valve hole 203, when the pressure-changing valve stem assembly 3 is moved to the first position relative to the pressure-changing valve body 2, the liquid passage 201 is communicated with the first liquid inlet 401 provided in the first valve body assembly 4, at which time the liquid enters the first valve body assembly 4 from the liquid passage 201 through the first liquid inlet 401, and flows out from the first valve body assembly 4 to achieve a larger pressure relief, when the pressure-changing valve stem assembly 3 is moved to the second position relative to the pressure-changing valve body 2, the liquid passage 201 is communicated with the first liquid inlet 401 and the second liquid inlet 501 provided in the second valve body assembly 5, at which time the liquid flows into the first valve body assembly 4 and the second valve body assembly 5 respectively through the liquid passage 201, and since the opening pressure of the second valve body assembly 5 is less than that of the first valve body assembly 4, the liquid flows out from the second valve body assembly 5 to achieve a smaller pressure relief. By setting up multiple valve body components, the hydraulic pressure can be controlled more finely, and the pressure of the coffee machine can be adjusted according to the user's preferences to make coffee that suits their taste. At the same time, this structure effectively maintains the stability of the internal pressure of the coffee machine, which helps to improve the stability and reliability of the entire coffee machine and reduce the possibility of failure.

[0045] like Figure 1 , Figure 2 , Figure 4 and Figure 6As shown, in addition to the features of the above-mentioned embodiments, the present embodiment is further defined as follows: it also includes a first pressure relief seal ring 6, the pressure-changing valve stem assembly 3 can be separated from or offset against the first pressure relief seal ring 6, the first pressure relief seal ring 6 is located between the first liquid inlet 401 and the liquid inlet 101, the liquid inlet assembly 1 is provided with a liquid inlet channel 103, when the pressure-changing valve stem assembly 3 is offset against the first pressure relief seal ring 6, the liquid passage 201 is separated from the liquid inlet channel 103, the pressure-changing valve stem assembly 3 closes the first liquid inlet 401, when the pressure-changing valve stem assembly 3 is separated from the first pressure relief seal ring 6 and moves to the first position or the second position, the liquid passage 201 is connected to the liquid inlet channel 103, and the pressure-changing valve stem assembly 3 opens the first liquid inlet 401. By setting the first pressure relief sealing ring 6 between the first liquid inlet 401 and the liquid inlet 101, and using the pressure-changing valve stem assembly 3 to adjust the position of the first pressure relief sealing ring 6, when the pressure-changing valve stem assembly 3 is against the first pressure relief sealing ring 6, the liquid passage 201 is separated from the liquid inlet channel 103. At this time, the first liquid inlet 401 is closed, and the liquid flows out directly from the pressure regulating valve without pressure relief. When the pressure-changing valve stem assembly 3 is separated from the first pressure relief sealing ring 6 and moves to the first position, the liquid passage 201 is connected with the liquid inlet channel 103, and the pressure-changing valve stem assembly 3 opens the first liquid inlet 401. At this time, the liquid flows out from the first valve body assembly 4, thereby achieving a greater pressure relief purpose.

[0046] like Figure 1 , Figure 2 , Figure 4 and Figure 6In addition to the features of the above-mentioned embodiments, the present embodiment is further defined as follows: it also includes a second pressure relief sealing ring 7, the second pressure relief sealing ring 7 is located between the first valve hole 202 and the second valve hole 203, the pressure-changing valve stem assembly 3 can be separated from or against the second pressure relief sealing ring 7, when the end of the pressure-changing valve stem assembly 3 is against the second pressure relief sealing ring 7 and the end of the pressure-changing valve stem assembly 3 is located between the first valve hole 202 and the second valve hole 203, the liquid passage 201 is connected with the first liquid inlet 401, the pressure-changing valve stem assembly 3 closes the second liquid inlet 501, and when the pressure-changing valve stem assembly 3 is separated from the second pressure relief sealing ring 7 and moves to the second position, the liquid passage 201 is respectively connected with the second liquid inlet 501 and the first liquid inlet 401. By arranging the second pressure relief sealing ring 7 between the first valve hole 202 and the second valve hole 203, when the end of the pressure-changing valve stem assembly 3 abuts against the second pressure relief sealing ring 7 and the end of the pressure-changing valve stem assembly 3 is located between the first valve hole 202 and the second valve hole 203, the liquid passage 201 is only connected to the first liquid inlet 401, and the second liquid inlet 501 is closed, so the liquid flows into the first liquid inlet 401 and flows out from the first valve body assembly 4; when the pressure-changing valve stem assembly 3 is separated from the second pressure relief sealing ring 7 and moves to the second position, the second liquid inlet 501 is opened, and the liquid passage 201 is respectively connected to the second liquid inlet 501 and the first liquid inlet 401; at this time, the liquid flows into the second valve body assembly 5 from the second liquid inlet 501 and flows out from the valve, thereby achieving a smaller pressure relief purpose.

[0047] like Figure 5 and Figure 6 As shown, in addition to the features of the above embodiments, the present embodiment further defines: the first valve body assembly 4 includes a first valve body shell 41, a first valve body 42 and a first spring 43, the first valve body shell 41 is arranged on the pressure-changing valve body 2, the first valve body shell 41 is provided with a first liquid inlet channel 402 connected to the first liquid inlet port 401, the first spring 43 is located in the first liquid inlet channel 402, one end of the first spring 43 is against the first valve body 42 and the other end is against the cavity wall of the first liquid inlet channel 402, the first valve body 42 can open or close the first liquid inlet channel 402. By setting the first valve body shell 41 on the variable pressure valve body 2, the first liquid inlet channel 402 provided in the first valve body shell 41 is connected with the first liquid inlet port 401. When the liquid is about to enter the first liquid inlet channel 402 from the first liquid inlet port 401, the first spring 43 provided in the first liquid inlet channel 402 is compressed, and at the same time drives the first valve body 42 provided in the first spring 43 to move downward, and the first liquid inlet channel 402 is opened, so that the liquid flows from the first liquid inlet channel 402 to the outside of the first valve body assembly 4, completing the pressure relief process. This structural design effectively maintains the stability of the internal pressure of the coffee machine, prevents the internal pressure of the coffee machine from being too high and damaging the components, avoids explosions or other dangerous situations caused by excessive pressure, protects the personal safety of users, helps to improve the stability and reliability of the entire coffee machine, and reduces the possibility of failure.

[0048] like Figure 5 and Figure 6 As shown, in addition to the features of the above embodiments, the present embodiment further defines: the second valve body assembly 5 includes a second valve body shell 51, a second valve body 52 and a second spring 53, the second valve body shell 51 is arranged on the pressure-changing valve body 2, the second valve body shell 51 is provided with a second liquid inlet channel 502 connected to the second liquid inlet port 501, the second spring 53 is located in the second liquid inlet channel 502, one end of the second spring 53 abuts against the second valve body 52 and the other end abuts against the cavity wall of the second liquid inlet channel 502, and the second valve body 52 can open or close the second liquid inlet channel 502. By arranging the second valve body shell 51 on the variable pressure valve body 2, the second liquid inlet channel 502 provided in the first valve body shell 41 is connected with the second liquid inlet port 501. When the liquid enters the second liquid inlet channel 502 from the second liquid inlet port 501, the second spring 53 provided in the second liquid inlet channel 502 is compressed, and at the same time drives the second valve body 52 provided in the second spring 53 to move downward, and the second liquid inlet channel 502 is opened, so that the liquid flows from the second liquid inlet channel 502 to the outside of the second valve body assembly 5, and the pressure relief process is completed. This structural design effectively maintains the stability of the internal pressure of the coffee machine, prevents the internal pressure of the coffee machine from being too high and damaging the components, avoids explosions or other dangerous situations caused by excessive pressure, protects the personal safety of users, helps to improve the stability and reliability of the entire coffee machine, and reduces the possibility of failure. At the same time, multiple pressure relief increases the way and reliability of pressure release, further reduces the risk of excessive pressure due to failure of a single pressure relief valve, and greatly improves the safety during use.

[0049] like Figure 1 , Figure 2 and Figure 4As shown, in addition to the features of the above embodiment, this embodiment further defines that: the pressure-changing valve body 2 includes a pressure-changing valve body 21 and a pressure-changing valve cover 22, the pressure-changing valve cover 22 is arranged on the pressure-changing valve body 21, the pressure-changing valve stem assembly 3 is arranged on the pressure-changing valve cover 22 and the pressure-changing valve stem assembly 3 is penetrated by the pressure-changing valve cover 22, and the pressure-changing valve body 21 is provided with a liquid passage 201. By arranging the pressure-changing valve cover 22 on the pressure-changing valve body 21, on the one hand, it provides protection for the components inside the pressure-changing valve body 21, prevents external dust, impurities and moisture from invading the liquid passage 201 provided in the pressure-changing valve body 21, thereby ensuring the cleanliness and normal operation of the valve interior, and further, the close combination of the pressure-changing valve cover 22 and the pressure-changing valve body 21 helps to enhance the sealing of the entire pressure regulating valve, prevents liquid from leaking when the pressure changes, which is crucial to maintaining the pressure stability and operation efficiency of the system, and finally, the pressure-changing valve cover 22 can increase the overall strength and rigidity of the pressure-changing valve body 21, so that it can withstand greater pressure and external force, and reduce the risk of deformation and damage. The variable pressure valve stem assembly 3 is arranged on the variable pressure valve cover 22 and penetrated through the variable pressure valve cover 22, so that the overall structure of the coffee machine is more compact, and at the same time, the user can more conveniently operate the variable pressure valve stem assembly 3 directly from the outside to adjust the pressure without complicated disassembly or deep adjustment inside the machine.

[0050] like Figure 1 , Figure 2 and Figure 3 As shown, in addition to the features of the above embodiments, this embodiment further defines: the pressure-changing valve cover 22 includes a valve cover body 221, a first sealing ring 222 and a second sealing ring 223, the valve cover body 221 is arranged on the pressure-changing valve body 21, the first sealing ring 222 is arranged on the valve cover body 221 and / or the pressure-changing valve body 21, and the second sealing ring 223 is arranged on the valve cover body 221 and / or the pressure-changing valve stem assembly 3. By setting the valve cover body 221 on the pressure-changing valve body 21, and setting the first sealing ring 222 provided on the pressure-changing valve cover 22 in the gap between the valve cover body 221 and the pressure-changing valve body 21, it is ensured that the liquid inside the pressure-changing valve body 21 will not leak, so that the pressure regulating valve can more accurately control and adjust the internal pressure. At the same time, the first sealing ring 222 can reduce the wear of the valve cover body 221 and the pressure-changing valve body 21 during contact and relative movement, and reduce the friction loss between the components. The second sealing ring 223 provided on the pressure-changing valve cover 22 is set between the valve cover body 221 and the pressure-changing valve stem assembly 3, which can effectively prevent the pressure from escaping from around the valve stem and causing pressure leakage. At the same time, the second sealing ring 223 plays a certain lubricating and buffering role, reduces the friction and wear generated when the valve cover body 221 and the pressure-changing valve stem assembly 3 move relative to each other, and prolongs the service life of the pressure-changing valve stem assembly 3. The two sealing rings effectively ensure the stability of the pressure inside the pressure regulating valve, thereby providing a stable and appropriate pressure condition for the coffee machine to extract coffee, and ensuring the smooth progress of the coffee extraction process.

[0051] Example 2

[0052] like Figures 1 to 7 As shown, this embodiment discloses a coffee machine, comprising: the above-mentioned pressure regulating valve; and a coffee system, on which the pressure regulating valve is arranged.

[0053] The second aspect of the present application discloses a coffee machine. By utilizing the above-mentioned pressure regulating valve, firstly, sufficient safety protection is provided for the water pump of the coffee machine, ensuring that the coffee system can operate stably under abnormal circumstances and prolonging the service life. Secondly, the water pressure inside the coffee machine can be adjusted and the pressure can be adjusted in multiple stages to ensure that the pressure can be kept within a suitable range during the extraction process, thereby obtaining the best extraction effect. At the same time, it is convenient for users to adjust to the most suitable extraction pressure according to their preferences and the characteristics of coffee beans. By stabilizing the extraction pressure, the pressure regulating valve helps to improve the extraction efficiency of coffee, ensuring that each cup of coffee can achieve the best taste and quality in a short time, thereby improving user satisfaction with the coffee machine and improving the market competitiveness of the coffee machine.

[0054] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A pressure regulating valve for a coffee machine, characterized in that: The pressure regulating valve comprises: A liquid inlet assembly (1), wherein the liquid inlet assembly (1) is provided with a liquid inlet (101) and a liquid outlet (102); A pressure-changing valve body (2), the pressure-changing valve body (2) being provided with a liquid passage (201), the pressure-changing valve body (2) being provided with at least one valve hole communicating with the liquid passage (201), the liquid inlet component (1) being arranged on the pressure-changing valve body (2), the liquid inlet component (1) being communicated with the liquid passage (201); a pressure-changing valve stem assembly (3), the pressure-changing valve stem assembly (3) being arranged on the pressure-changing valve body (2), the pressure-changing valve stem assembly (3) extending into the liquid passage (201), the pressure-changing valve stem assembly (3) being movable in the liquid passage (201), and being capable of blocking or opening the valve hole when the pressure-changing valve stem assembly (3) moves in the liquid passage (201); At least one valve body assembly, the number of the valve body assemblies is the same as the number of the valve holes, the valve body assembly is arranged on the pressure-changing valve body (2) and blocks the valve holes.

2. The pressure regulating valve according to claim 1, characterized in that: There are multiple valve holes, which are arranged in sequence along the length direction of the liquid passage (201); there are multiple valve body assemblies, which respectively block the multiple valve holes.

3. The pressure regulating valve according to claim 2, characterized in that: The two ends of the liquid passage (201) are open, the liquid inlet assembly (1) and the pressure-changing valve stem assembly (3) are respectively arranged on the liquid passage (201) and located at the two end openings of the liquid passage (201), the pressure-changing valve stem assembly (3) can move along the length direction of the liquid passage (201), and when the pressure-changing valve stem assembly (3) moves along the liquid passage (201), the plurality of valve holes can be respectively connected to the liquid passage (201), and along the direction from the liquid inlet assembly (1) to the pressure-changing valve stem assembly (3), the opening pressures of the plurality of valve body assemblies are successively reduced.

4. The pressure regulating valve according to claim 1, characterized in that: The liquid inlet component (1) is integrally formed, and the liquid inlet component (1) is provided with a liquid inlet channel (103), and the liquid inlet port (101), the liquid outlet port (102) and the liquid inlet channel (103) are sequentially connected; Or the liquid inlet component (1) comprises a liquid inlet part and a liquid outlet part, the liquid inlet part is provided with a liquid inlet (101), the liquid outlet part is provided with a liquid outlet (102), and the liquid inlet (101), the liquid outlet (102) and the liquid inlet channel (103) are sequentially connected.

5. The pressure regulating valve according to claim 1, characterized in that: The number of the valve holes is two, the two valve holes are a first valve hole (202) and a second valve hole (203); the number of the valve body assemblies is two, the two valve body assemblies are a first valve body assembly (4) and a second valve body assembly (5); the first valve body assembly (4) is arranged on the pressure-changing valve body (2) and is located at the first valve hole (202); the first valve body assembly (4) is provided with a first liquid inlet (401); the second valve body assembly (5) is arranged on the pressure-changing valve body (2) and is located at the second valve hole (203); the second valve body assembly (5) is provided with a first liquid inlet (401); The component (5) is provided with a second liquid inlet (501); the pressure-changing valve stem assembly (3) has at least a first position and a second position relative to the pressure-changing valve body (2); when the pressure-changing valve stem assembly (3) is located at the first position, the liquid passage (201) is connected to the first liquid inlet (401) and the second liquid inlet (501) is separated from the liquid passage (201); when the pressure-changing valve stem assembly (3) is located at the second position, the liquid passage (201) is connected to the first liquid inlet (401) and the second liquid inlet (501), respectively.

6. The pressure regulating valve according to claim 5, characterized in that: The pressure-changing valve stem assembly (3) further comprises a first pressure-relief sealing ring (6), the pressure-changing valve stem assembly (3) can be separated from or abutted against the first pressure-relief sealing ring (6), the first pressure-relief sealing ring (6) is located between the first liquid inlet (401) and the liquid inlet (101), the liquid inlet assembly (1) is provided with a liquid inlet channel (103), when the pressure-changing valve stem assembly (3) abuts against the first pressure-relief sealing ring (6), the liquid passage channel (201) is separated from the liquid inlet channel (103), and the pressure-changing valve stem assembly (3) closes the first liquid inlet (401), when the pressure-changing valve stem assembly (3) is separated from the first pressure-relief sealing ring (6) and moves to the first position or the second position, the liquid passage channel (201) is communicated with the liquid inlet channel (103), and the pressure-changing valve stem assembly (3) opens the first liquid inlet (401); And / or also includes a second pressure relief sealing ring (7), the second pressure relief sealing ring (7) is located between the first valve hole (202) and the second valve hole (203), the variable pressure valve stem assembly (3) can be separated from or abutted against the second pressure relief sealing ring (7), when the end of the variable pressure valve stem assembly (3) abuts against the second pressure relief sealing ring (7) and the end of the variable pressure valve stem assembly (3) is located between the first valve hole (202) and the second valve hole (203), the liquid passage (201) is connected with the first liquid inlet (401), the variable pressure valve stem assembly (3) closes the second liquid inlet (501), and when the variable pressure valve stem assembly (3) is separated from the second pressure relief sealing ring (7) and moves to the second position, the liquid passage (201) is respectively connected with the second liquid inlet (501) and the first liquid inlet (401).

7. The pressure regulating valve according to claim 5, characterized in that: The first valve body assembly (4) comprises a first valve body shell (41), a first valve body (42) and a first spring (43); the first valve body shell (41) is arranged on the variable pressure valve body (2); the first valve body shell (41) is provided with a first liquid inlet channel (402) communicating with the first liquid inlet port (401); the first spring (43) is located in the first liquid inlet channel (402); one end of the first spring (43) abuts against the first valve body (42) and the other end abuts against the cavity wall of the first liquid inlet channel (402); the first valve body (42) can open or close the first liquid inlet channel (402); And / or the second valve body assembly (5) comprises a second valve body shell (51), a second valve body (52) and a second spring (53); the second valve body shell (51) is arranged on the variable pressure valve body (2); the second valve body shell (51) is provided with a second liquid inlet channel (502) connected to the second liquid inlet port (501); the second spring (53) is located in the second liquid inlet channel (502); one end of the second spring (53) abuts against the second valve body (52) and the other end abuts against the cavity wall of the second liquid inlet channel (502); the second valve body (52) can open or close the second liquid inlet channel (502).

8. The pressure regulating valve according to claim 1, characterized in that: The pressure-changing valve body (2) comprises a pressure-changing valve body (21) and a pressure-changing valve cover (22); the pressure-changing valve cover (22) is arranged on the pressure-changing valve body (21); the pressure-changing valve stem assembly (3) is arranged on the pressure-changing valve cover (22) and the pressure-changing valve stem assembly (3) is passed through the pressure-changing valve cover (22); and the pressure-changing valve body (21) is provided with the liquid passage (201).

9. The pressure regulating valve according to claim 8, characterized in that: The pressure-changing valve cover (22) comprises a valve cover body (221), a first sealing ring (222) and a second sealing ring (223); the valve cover body (221) is arranged on the pressure-changing valve body (21); the first sealing ring (222) is arranged on the valve cover body (221) and / or the pressure-changing valve body (21); and the second sealing ring (223) is arranged on the valve cover body (221) and / or the pressure-changing valve stem assembly (3).

10. A coffee machine, characterized in that: The coffee machine comprises: The pressure regulating valve according to any one of claims 1 to 9; Coffee system, the pressure regulating valve is arranged on the coffee system.

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