Three-way valve for beverage dispenser and beverage dispenser liquid path system

Abstract

The utility model discloses a three-way valve for a beverage dispenser and a beverage dispenser liquid path system. The three-way valve comprises a main body unit which comprises a valve body, a first liquid outlet flow channel, a liquid inlet flow channel and a second liquid outlet flow channel, the first liquid outlet flow channel, the liquid inlet flow channel and the second liquid outlet flow channel are sequentially arranged in the valve body in a communicated mode, and a sealing piece is arranged between every two adjacent flow channels; the connector unit comprises a liquid inlet end, a first liquid outlet end and a second liquid outlet end, the liquid inlet end communicates with the liquid inlet flow channel and is used for enabling drinks to enter the main body unit, and the first liquid outlet end and the second liquid outlet end communicate with the first liquid outlet flow channel and the second liquid outlet flow channel correspondingly and are used for outputting the drinks; the driving transmission unit comprises a push rod and a movable driving unit, the push rod is movably arranged in the first liquid outlet flow channel, the liquid inlet flow channel and the second liquid outlet flow channel, and the rear end of the push rod extends out of the main body unit and then is connected with the movable driving unit, so that the push rod is driven by the movable driving unit to move back and forth in the main body unit. According to the utility model, the taste and quality of drinks are improved, the water temperature is adjusted at a constant temperature, and the experience feeling is good.

Description

Technical Field

[0001] This utility model relates to the field of valve technology for beverage machines, and in particular to a three-way valve and a liquid circuit system for beverage machines. Background Technology

[0002] Three-way valves are common components in the piping systems of beverage machines such as coffee makers. Conventional three-way valves, such as standard solenoid three-way valves, are generally only used in the pure water circuit of beverage machines. Especially in coffee machines, they cannot be used in the coffee liquid circuit because coffee oils and residues in the coffee liquid circuit may adhere to the valve core or seals, damaging the conventional solenoid three-way valve. Solenoid valves specifically designed for milk or coffee are more expensive. Therefore, in mid-to-low-end coffee machines, this type of three-way solenoid valve structure is generally not used from the brewer outlet to the coffee beverage outlet.

[0003] However, this also means that when preheating the coffee brewing system before making coffee, it usually only preheats the pipes between the boiler or heating plate and the brewer, as well as the brewer itself. The preheated water is then directly discharged after passing through the brewer. This often results in the first cup of coffee not reaching the preset temperature, thus affecting the taste and quality of the coffee. Utility Model Content

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A three-way valve for a beverage machine is provided, comprising:

[0006] The main unit includes a valve body and a first liquid outlet channel, a liquid inlet channel and a second liquid outlet channel that are sequentially connected and disposed within the valve body, and a sealing element is provided between adjacent channels;

[0007] The connector unit includes an inlet end, a first outlet end, and a second outlet end. The inlet end is connected to the inlet channel for allowing beverages to enter the main unit. The first outlet end and the second outlet end are respectively connected to the first outlet channel and the second outlet channel for discharging beverages.

[0008] The drive transmission unit includes a push rod and a moving drive unit. The push rod is movably disposed within the first liquid outlet channel, the liquid inlet channel, and the second liquid outlet channel, and its rear end extends outside the main body unit and connects to the moving drive unit, so that the push rod moves back and forth within the main body unit under the drive of the moving drive unit. When the moving drive unit drives the push rod to move along a first direction, the push rod is in close contact with the seal between the second liquid outlet channel and the liquid inlet channel to open the first liquid outlet channel and block the second liquid outlet channel. When the moving drive unit drives the push rod to move in the opposite direction to the first direction, the push rod is in close contact with the seal between the first liquid outlet channel and the liquid inlet channel to open the second liquid outlet channel and block the first liquid outlet channel.

[0009] In a preferred embodiment of the present invention, a first end cap is provided on one end of the valve body, the first end cap having a through hole allowing the push rod to pass through, and a second end cap is provided on the other end of the valve body; preferably, a connecting part is provided between the first end cap and the valve body.

[0010] In a preferred embodiment of this utility model, a sealing element is provided at the connection between the connecting part and the valve body, and a sealing element that contacts the push rod is provided on the through hole; preferably, the sealing element is a Y-shaped sealing ring; preferably, the openings of the Y-shaped sealing rings at both ends of the liquid inlet channel are arranged facing inwards, and the opening of the Y-shaped sealing ring between the connecting part and the valve body faces away from the moving drive unit.

[0011] In a preferred embodiment of the present invention, positioning components for assembly and positioning are provided on the valve body, the first end cover, the second end cover and the connecting portion.

[0012] In a preferred embodiment of the present invention, the valve body is integrally connected with the liquid inlet, the first liquid outlet and the second liquid outlet. Preferably, the liquid inlet, the first liquid outlet and the second liquid outlet are located on the same side of the valve body.

[0013] In a preferred embodiment of the present invention, the push rod located in the liquid inlet channel is provided with an inwardly recessed groove for the flow of beverage between the liquid inlet channel and the first liquid outlet channel or the second liquid outlet channel.

[0014] A beverage machine liquid circuit system, comprising:

[0015] Heating unit, used to heat beverages;

[0016] The brewing unit, connected to the heating unit, is used to press powdered beverage ingredients into a cake for brewing and extraction.

[0017] The beverage outlet unit is connected to the heating unit and the brewing unit via a piping unit for dispensing beverages;

[0018] The main control unit is electrically connected to both the heating unit and the brewing unit.

[0019] It also includes the three-way valve described in any of the above, wherein the pipeline unit includes a beverage pipeline and / or a hot water pipeline, the three-way valve is disposed on the beverage pipeline and / or the hot water pipeline, and the movement drive unit of the three-way valve is electrically connected to the main control unit, so that the three-way valve opens the first liquid outlet or the second liquid outlet under the control of the main control unit.

[0020] In a preferred embodiment of this utility model, the inlet end of the three-way valve on the beverage pipeline is connected to the brewing unit, so that the beverage liquid flows into the three-way valve from the inlet end. The first outlet end of the three-way valve on the beverage pipeline is connected to the wastewater tray of the beverage machine for discharging preheated water to the wastewater tray. The second outlet end of the three-way valve on the beverage pipeline is connected to the beverage outlet unit for discharging beverage liquid.

[0021] In a preferred embodiment of this utility model, the inlet end of the three-way valve on the hot water pipeline is connected to the heating unit, so that hot water flows into the three-way valve from the inlet end. The first outlet end of the three-way valve on the hot water pipeline is connected to the heating unit for returning the hot water to the heating unit for reheating. The second outlet end of the three-way valve on the hot water pipeline is connected to the beverage outlet unit for outputting hot water.

[0022] In a preferred embodiment of this utility model, a temperature sensor is provided on the inlet end of the three-way valve on the hot water pipeline. The temperature sensor is electrically connected to the main control unit to detect the temperature of the hot water delivered by the heating unit in real time, so that the main control unit adjusts the output of the three-way valve according to the real-time temperature of the hot water.

[0023] The beneficial effects of this utility model are as follows: The three-way valve of this application can use a push rod to adjust the opening and closing state of each output end. It not only has a simple structure, good sealing performance, and low cost, but also prevents coffee oils and other substances from adhering to the push rod, making it easy to clean and with a long service life. Furthermore, the beverage machine liquid circuit system using this three-way valve can effectively solve the problem of insufficient preheating in the coffee pipeline, thereby improving the taste and quality of the beverage. Moreover, its use in the hot water pipeline of the beverage machine can also achieve constant temperature regulation of the water, with high stability, convenient use, and a good user experience. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0025] Figure 1 This is a front view of a preferred embodiment of a three-way valve for a beverage machine according to this utility model;

[0026] Figure 2 This is a schematic diagram of the back structure of a preferred embodiment of a three-way valve for a beverage machine according to this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of a three-way valve for a beverage machine according to the present invention (state 1).

[0028] Figure 4 This is a schematic diagram of the structure of a three-way valve for a beverage machine according to the present invention, in state 2.

[0029] Figure 5 This is a schematic diagram of the system structure of a preferred embodiment of the liquid circuit system of a beverage machine according to this utility model;

[0030] Figure 6 This is a schematic diagram of the beverage outlet unit and the three-way valve in a preferred embodiment of the liquid circuit system of a beverage machine according to this utility model. Detailed Implementation

[0031] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] Please see Figure 1-6 The embodiments of this utility model include:

[0033] A three-way valve for beverage machines, mainly used in coffee machines or other beverage machines, comprises: a main body unit 1, a connector unit 2, and a drive transmission unit 3. The main body unit 1 includes a valve body 11 and a first liquid outlet channel 12, a liquid inlet channel 13, and a second liquid outlet channel 14 sequentially connected within the valve body, with a seal 15 between adjacent channels. The connector unit 2 includes an inlet end 21, a first liquid outlet end 22, and a second liquid outlet end 23. The inlet end 21 is connected to the inlet channel 13 for allowing beverages to enter the main body unit 1. The first liquid outlet end 22 and the second liquid outlet end 23 are respectively connected to the first liquid outlet channel 12 and the second liquid outlet channel 14 for discharging beverages. The drive transmission unit 3 includes a push rod 31 and a movable... The drive unit 32 and the push rod 31 are movably disposed in the cavity formed by the first liquid outlet channel 12, the liquid inlet channel 13 and the second liquid outlet channel 14, and the rear end of the push rod 31 extends outside the main body unit 1 and is connected to the mobile drive unit 32. When the mobile drive unit 32 drives the push rod 31 to move in the first direction, the push rod 31 is in close contact with the sealing member 15 between the second liquid outlet channel 14 and the liquid inlet channel 13 to open the first liquid outlet channel 12 and block the second liquid outlet channel 14. When the mobile drive unit 32 drives the push rod 31 to move in the opposite direction to the first direction, the push rod 31 is in close contact with the sealing member 15 between the first liquid outlet channel 12 and the liquid inlet channel 13 to open the second liquid outlet channel 14 and block the first liquid outlet channel 12.

[0034] Furthermore, a first end cap 111 is provided on one end of the valve body 11 near the moving drive unit 32, and the first end cap 111 is provided with a through hole that allows the push rod 31 to pass through.

[0035] In some embodiments of this application, the first end cap 111 is connected to the valve body 11 via a connecting portion 112. The connecting portion 112 may extend into the first liquid outlet channel 12.

[0036] Optionally, the valve body 11, the first end cap 111, and the connecting part 112 are all plastic parts, and the first end cap 111 and the connecting part 112, and the connecting part 112 and the valve body 11 are sealed by ultrasonic or flat welding process.

[0037] Furthermore, a second end cap 113 is provided on the other end of the valve body 11. The second end cap 113 can extend into the second liquid outlet channel 14.

[0038] Optionally, the second end cap 113 is made of plastic, and the second end cap 113 and the valve body 11 are sealed by ultrasonic or flat welding process.

[0039] Furthermore, a sealing element 15 is also provided at the connection between the connecting part 112 and the valve body 11, as well as in the through hole of the first end cover 111.

[0040] In some embodiments of this application, the seal 15 is a Y-shaped sealing ring, which has good sealing performance. The openings of the Y-shaped sealing rings at both ends of the liquid inlet channel 13 are arranged to face inwards. This allows the opening of the Y-shaped sealing ring to open wider under the hydraulic action of the liquid inlet. This not only improves the sealing performance but also allows it to make close contact with the push rod 31, preventing coffee residue, particles, and grease from adhering to the push rod 31.

[0041] Furthermore, positioning components for assembly positioning are provided on the valve body 11, the first end cover 111, the second end cover 113 and the connecting part 112.

[0042] In some embodiments of this application, the positioning assembly includes a positioning socket 114 and a positioning block 115. Positioning sockets 114 are provided on the outer edges of both ends of the valve body 11 and the outer edge of the connecting portion 112. Positioning blocks 115 are provided on the outer edges of the first end cover 111, the connecting portion 112, and the second end cover 113. The positioning block 115 on the first end cover 111 is movably connected to the positioning socket 114 on the connecting portion 112 to achieve the installation positioning of the first end cover 111 and the connecting portion 112. The positioning block 115 on the connecting portion 112 is movably connected to the positioning socket 114 at one end of the valve body 11 to achieve the installation positioning of the connecting portion 112 and the valve body 11. The positioning block 115 on the second end cover 113 is movably connected to the positioning socket 114 at the other end of the valve body 11 to achieve the installation positioning of the second end cover 113 and the valve body 11, thereby improving the accuracy of assembly.

[0043] In some embodiments of this application, an inlet end 21, a first outlet end 22, and a second outlet end 23 are integrally connected to the valve body 11. Optionally, the diameter of the valve body 11 portion connected to the inlet end 21 is smaller than the diameter of the valve body 11 portion connected to the first / second outlet ends.

[0044] In some embodiments of this application, the push rod 31 is made of stainless steel, which provides high safety and long service life.

[0045] Furthermore, the push rod 31 located in the liquid inlet channel 13 is provided with an inwardly recessed groove 311, so that the diameter of the push rod 31 portion with the groove 311 is smaller than the diameter of the other portions of the push rod 31, so as to facilitate the flow of beverage between the liquid inlet channel 13 and the first liquid outlet channel 12 or the second liquid outlet channel 14.

[0046] In some embodiments of this application, the motion drive unit 32 is preferably a stepper motor, the output end of which is connected to the rear end of the push rod 31 to drive the push rod 31 to move back and forth in the cavity formed by the liquid inlet channel 13, the first liquid outlet channel 12 and the second liquid outlet channel 14, thereby switching between state 1 and state 2.

[0047] State 1: First liquid outlet 22 is open, second liquid outlet 23 is closed.

[0048] Specifically: The stepper motor drives the push rod 31 to move along the first direction (the direction in which the front end of the push rod 31 is away from the second end cover 113). When the opening of the Y-shaped sealing ring located between the second liquid outlet channel 14 and the liquid inlet channel 13 is in close contact with the outer periphery of the front end of the push rod 31, and the groove 311 on the push rod 31 moves to the Y-shaped sealing ring located between the first liquid outlet channel 12 and the liquid inlet channel 13, the second liquid outlet channel 12 and the liquid inlet channel 13 are blocked. The beverage entering the valve body 11 from the liquid inlet end 21 cannot flow into the second liquid outlet channel 14, thereby closing the second liquid outlet end 23. At the same time, the first liquid outlet channel 12 and the liquid inlet channel 13 are connected. The beverage entering the valve body 11 from the liquid inlet end 21 flows into the first liquid outlet channel 12 through the gap between the liquid inlet channel 13, the Y-shaped sealing ring and the groove 311, and finally the beverage is output from the first liquid outlet end 21.

[0049] State 2: First liquid outlet 22 is closed, second liquid outlet 23 is open.

[0050] Specifically: The stepper motor drives the push rod 31 to move along the second direction (the direction of the front end of the push rod 31 near the second end cover 113). When the groove 311 on the push rod 31 moves to the Y-shaped sealing ring located between the second liquid outlet channel 14 and the liquid inlet channel 13, and the opening of the Y-shaped sealing ring located between the first liquid outlet channel 12 and the liquid inlet channel 13 is in close contact with the outer periphery of the middle part of the push rod 21, the second liquid outlet channel 14 and the liquid inlet channel 13 are connected. The beverage entering the valve body 11 from the liquid inlet end 21 flows into the second liquid outlet channel 14 through the gap between the liquid inlet channel 13, the Y-shaped sealing ring and the groove, and finally the beverage is output from the second liquid outlet end 23. At the same time, the first liquid outlet channel 12 and the liquid inlet channel 13 are blocked, and the beverage entering the valve body 11 from the liquid inlet end 21 cannot flow into the first liquid outlet channel 12, thereby closing the first liquid outlet end 21.

[0051] A beverage machine liquid circuit system includes: a heating unit A, a brewing unit B, a beverage outlet unit C, a main control unit D, and the aforementioned three-way valve E. The heating unit A heats the beverage. The brewing unit B is connected to the heating unit A and is used to press powdered beverage ingredients, such as coffee bean powder, into a cake for brewing and extraction. The beverage outlet unit C is connected to the heating unit A and the brewing unit B through a pipeline unit for dispensing the beverage. The main control unit is electrically connected to the heating unit and the brewing unit respectively. The pipeline unit includes a beverage pipeline and / or a hot water pipeline F2. The three-way valve E is disposed on the beverage pipeline and / or the hot water pipeline F2, and the movement drive unit 32 of the three-way valve E is electrically connected to the main control unit D, so that the three-way valve E opens the first liquid outlet 22 or the second liquid outlet 23 under the control of the main control unit D.

[0052] Furthermore, beverage export unit C includes coffee export C1, hot water export C2, and other beverage export C3.

[0053] In some embodiments of this application, a two-way accumulator valve G and a pressure relief valve H are provided between the heating unit A and the brewing unit B.

[0054] In some embodiments of this application, the main control unit D may be a chip or circuit structure with data processing and storage capabilities, such as an MCU.

[0055] In some embodiments of this application, the three-way valve E can be installed on the coffee line F1 or the hot water line F2.

[0056] like Figure 6 As shown, in a preferred embodiment of this application, a three-way valve E is provided on both the beverage pipeline F1 and the hot water pipeline F2.

[0057] Specifically, the inlet end 21 of the three-way valve E on the coffee pipeline F1 is connected to the brewing unit B, so that the coffee liquid flows into the three-way valve E from the inlet end 21. The first outlet end 22 of the three-way valve E on the coffee pipeline F1 is connected to the wastewater tray of the coffee machine for discharging preheated water into the wastewater tray. The second outlet end 23 of the three-way valve E on the coffee pipeline F1 is connected to the beverage outlet unit C for discharging coffee liquid.

[0058] During preheating, the main control unit D controls the stepper motor in the three-way valve E to rotate clockwise / counterclockwise according to the received preheating signal, so as to drive the push rod 31 to move in the cavity, so that the three-way valve E switches to state 1, the second liquid outlet 23 is closed and the first liquid outlet 22 is opened. At this time, the hot water in the heating unit A flows through the brewing unit B, the coffee pipeline F1 and the three-way valve E on the coffee pipeline F1 for preheating. The preheating water is input from the liquid inlet 21 of the three-way valve E, and then flows through the first liquid outlet channel 12 and is output from the first liquid outlet 22 to the wastewater pan I.

[0059] When making coffee, the main control unit D controls the stepper motor in the three-way valve E to rotate counterclockwise / clockwise according to the received coffee making signal, so as to drive the push rod 31 to move in the opposite direction in the cavity, so that the three-way valve E switches to state 2, the first liquid outlet 22 is closed and the second liquid outlet 23 is opened. At this time, the hot water in the heating unit A flows into the brewing unit B to brew and extract coffee. The coffee liquid is input from the liquid inlet of the three-way valve E, and then flows through the liquid inlet channel 13 and the second liquid outlet channel 14, and is output from the second liquid outlet 23 and the coffee pipeline F1 to the coffee outlet C1 of the beverage outlet unit C.

[0060] The inlet end 21 of the three-way valve E on the hot water pipeline F2 is connected to the heating unit A, allowing hot water to flow into the three-way valve E from the inlet end 21. The first outlet end 22 of the three-way valve E on the hot water pipeline F2 is connected to the heating unit A for returning hot water to the heating unit A for reheating. The second outlet end 23 of the three-way valve E on the hot water pipeline F2 is connected to the beverage outlet unit C for discharging hot water. In some embodiments of this application, a temperature sensor J is provided on the inlet end 21 of the three-way valve E on the hot water pipeline F2. The temperature sensor J is electrically connected to the main control unit D for real-time detection of the temperature of the hot water supplied by the heating unit A, allowing the main control unit D to adjust the output of the three-way valve E according to the real-time temperature of the hot water.

[0061] Specifically, when producing hot water, after receiving the hot water production signal, the main control unit D acquires the current water temperature value detected by the NTC temperature sensor J at the inlet 21, and compares the current water temperature value with the preset target water temperature value:

[0062] (a) When the detected current water temperature is lower than the target water temperature, the main control unit D controls the stepper motor in the three-way valve E to rotate clockwise / counterclockwise, so as to drive the push rod 31 to move in the cavity, so that the three-way valve E switches to state 1, the first liquid outlet 22 opens and the second liquid outlet 23 closes. At this time, hot water enters the valve body 11 from the liquid inlet 21, and then flows through the liquid inlet channel 13 and the first liquid outlet channel 12, and then flows back from the first liquid outlet 22 to the heating unit A for reheating.

[0063] In some embodiments of this application, the three-way valve E on the hot water pipe F2 is normally kept in state 1, that is, if the current water temperature is lower than the target water temperature, the stepper motor remains stationary and the hot water flows directly back to the heating unit A.

[0064] (b) When the detected current water temperature is equal to or within the target water temperature range, the main control unit D controls the stepper motor in the three-way valve E to rotate counterclockwise or clockwise, so as to drive the push rod 31 to move in the opposite direction in the cavity, so that the three-way valve E switches to state 2, the second liquid outlet 23 opens and the first liquid outlet 22 closes. At this time, hot water enters the valve body 11 from the liquid inlet 21, and then flows through the liquid inlet channel 13 and the second liquid outlet channel 14, and is output from the second liquid outlet 23 and the hot water pipeline F2 to the hot water outlet C2 of the beverage outlet unit C. This ensures the temperature of the output hot water and also ensures the hot water temperature during coffee extraction, thus improving the quality and taste of coffee extraction.

[0065] In some embodiments of this application, a solenoid valve K is provided between the liquid inlet 21 of the three-way valve E and the heating unit A. Optionally, the heating unit A includes a boiler or an instantaneous electric heating plate.

[0066] The beverage machine in this application may be, but is not limited to, a coffee machine. The embodiments of this application use a coffee machine as an example, but other beverage devices with brewing functions, such as tea extractors, also fall within the scope of the beverage machine of this invention.

[0067] The beneficial effects of this utility model of a three-way valve for a beverage machine and a beverage machine liquid circuit system are:

[0068] 1. The three-way valve in this application uses a push rod to adjust the opening and closing state of each output end. It not only has a simple structure, good sealing performance, and low cost, but also prevents coffee oils and other substances from adhering to the push rod, making it easy to clean and with a long service life.

[0069] 2. The beverage machine liquid circuit system using the three-way valve of this application can effectively solve the problem of insufficient preheating in the coffee pipeline, thereby improving the taste and quality of the beverage. Moreover, when used in the hot water pipeline of the beverage machine, it can also achieve constant temperature regulation of the water, with high stability, convenient use, and good user experience.

[0070] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A three-way valve for a beverage machine, characterized in that, include: The main unit includes a valve body and a first liquid outlet channel, a liquid inlet channel and a second liquid outlet channel that are sequentially connected and disposed within the valve body, and a sealing element is provided between adjacent channels; The connector unit includes an inlet end, a first outlet end, and a second outlet end. The inlet end is connected to the inlet channel for allowing beverages to enter the main unit. The first outlet end and the second outlet end are respectively connected to the first outlet channel and the second outlet channel for discharging beverages. The drive transmission unit includes a push rod and a moving drive unit. The push rod is movably disposed within the first liquid outlet channel, the liquid inlet channel, and the second liquid outlet channel, and its rear end extends outside the main body unit and connects to the moving drive unit, so that the push rod moves back and forth within the main body unit under the drive of the moving drive unit. When the moving drive unit drives the push rod to move along a first direction, the push rod is in close contact with the seal between the second liquid outlet channel and the liquid inlet channel to open the first liquid outlet channel and block the second liquid outlet channel. When the moving drive unit drives the push rod to move in the opposite direction to the first direction, the push rod is in close contact with the seal between the first liquid outlet channel and the liquid inlet channel to open the second liquid outlet channel and block the first liquid outlet channel.

2. The three-way valve for beverage machines according to claim 1, characterized in that, A first end cap is provided on one end of the valve body, and the first end cap is provided with a through hole that allows the push rod to pass through. A second end cap is provided on the other end of the valve body.

3. The three-way valve for beverage machines according to claim 2, characterized in that, A connecting part is provided between the first end cap and the valve body.

4. The three-way valve for a beverage machine according to claim 3, characterized in that, The sealing element is provided at the connection between the connecting part and the valve body, and a sealing element that contacts the push rod is provided on the through hole.

5. The three-way valve for a beverage machine according to claim 4, characterized in that, The sealing element is a Y-shaped sealing ring. The openings of the Y-shaped sealing rings at both ends of the liquid inlet channel are arranged facing inwards, while the opening of the Y-shaped sealing ring located between the connecting part and the valve body faces away from the moving drive unit.

6. The three-way valve for a beverage machine according to claim 3, characterized in that, Positioning components for assembly and positioning are provided on the valve body, the first end cover, the second end cover, and the connecting part.

7. The three-way valve for a beverage machine according to claim 1, characterized in that, The valve body is integrally connected with the inlet end, the first outlet end, and the second outlet end.

8. The three-way valve for a beverage machine according to claim 7, characterized in that, The inlet, the first outlet, and the second outlet are located on the same side of the valve body.

9. The three-way valve for a beverage machine according to claim 1, characterized in that, The push rod located within the liquid inlet channel is provided with an inwardly recessed groove for the flow of beverage between the liquid inlet channel and the first or second liquid outlet channel.

10. A beverage machine liquid circuit system, comprising: Heating unit, used to heat beverages; The brewing unit, connected to the heating unit, is used to press powdered beverage ingredients into a cake for brewing and extraction. The beverage outlet unit is connected to the heating unit and the brewing unit via a piping unit for dispensing beverages; The main control unit is electrically connected to both the heating unit and the brewing unit. The feature is that it further includes a three-way valve as described in any one of claims 1-9, wherein the pipeline unit includes a beverage pipeline and / or a hot water pipeline, the three-way valve is disposed on the beverage pipeline and / or the hot water pipeline, and the movement drive unit of the three-way valve is electrically connected to the main control unit, so that the three-way valve opens the first liquid outlet or the second liquid outlet under the control of the main control unit.

11. The beverage machine liquid circuit system according to claim 10, characterized in that, The inlet end of the three-way valve on the beverage pipeline is connected to the brewing unit, so that the beverage liquid flows into the three-way valve from the inlet end. The first outlet end of the three-way valve on the beverage pipeline is connected to the wastewater tray of the beverage machine for discharging preheated water into the wastewater tray. The second outlet end of the three-way valve on the beverage pipeline is connected to the beverage outlet unit for discharging beverage liquid.

12. The beverage machine liquid circuit system according to claim 10, characterized in that, The inlet end of the three-way valve on the hot water pipeline is connected to the heating unit, so that hot water flows into the three-way valve from the inlet end. The first outlet end of the three-way valve on the hot water pipeline is connected to the heating unit for returning the hot water to the heating unit for reheating. The second outlet end of the three-way valve on the hot water pipeline is connected to the beverage outlet unit for outputting hot water.

13. The beverage machine liquid circuit system according to claim 10 or 12, characterized in that, A temperature sensor is installed on the inlet end of the three-way valve on the hot water pipeline. The temperature sensor is electrically connected to the main control unit to detect the temperature of the hot water delivered by the heating unit in real time, so that the main control unit can adjust the output of the three-way valve according to the real-time temperature of the hot water.

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