Milk path system, control method thereof and beverage machine capable of outputting milk

Abstract

The invention discloses a milk path system, a control method of the milk path system and a beverage machine capable of outputting milk, the milk path system comprises a milk box and a pipeline assembly, and a milk storage cavity is formed in the milk box; the pipeline assembly comprises a milk supply pipeline, a milk outlet pipeline and a gas conveying pipeline, the milk supply pipeline, the milk outlet pipeline and the gas conveying pipeline are connected in an on-off mode through a first multi-way valve, the other end of the milk supply pipeline is communicated with the milk storage cavity, and a milk outlet is formed in the other end of the milk outlet pipeline. The other end of the gas conveying pipeline forms a gas inlet for introducing external gas; the first multi-way valve selectively conducts the milk supply pipeline and the milk outlet pipeline, the gas conveying pipeline and the milk supply pipeline, and the gas conveying pipeline and the milk outlet pipeline. According to the invention, the residual milk in the milk path system can be efficiently emptied, the milk preparation quality is improved, and the use reliability of the whole machine is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of beverage preparation equipment, and particularly relates to a milk path system, a control method thereof, and a milk-dispensing beverage machine. Background Art

[0002] In a milk supply system of an existing beverage preparation equipment for making milk-based beverages, it is used to transport milk liquid to directly provide milk liquid externally or assist in making various milk-containing beverages. When it is necessary to prepare a milk-containing beverage, by controlling the start and stop of a pump, the milk liquid in a milk tank can be pumped to a milk liquid outlet through a delivery pipeline. When the preparation of the milk-containing beverage is completed, there will be residual milk liquid in the delivery pipeline. If the interval time for preparing the next cup of milk beverage is relatively long, it is easy to cause the residual milk liquid in the delivery pipeline to deteriorate, reducing the preparation quality of the next cup of milk-containing beverage, or further damaging the quality of the milk beverage and being unfavorable to food safety. Summary of the Invention

[0003] The main object of the present invention is to propose a milk path system, a control method thereof, and a milk-dispensing beverage machine, aiming to solve the problem that the milk path of traditional equipment such as coffee machines is prone to residual milk liquid, which affects the milk dispensing quality.

[0004] To achieve the above object, a milk path system proposed by the present invention includes:

[0005] A milk box, inside which there is a milk storage cavity for storing milk liquid; and,

[0006] A pipeline assembly, including a milk supply pipeline, a milk outlet pipeline, and an air delivery pipeline. The milk supply pipeline, the milk outlet pipeline, and the air delivery pipeline are connected in a switchable manner through a first multi-way valve. The other end of the milk supply pipeline is connected to communicate with the milk storage cavity. The other end of the milk outlet pipeline forms a milk liquid outlet. The other end of the air delivery pipeline forms a gas inlet for accessing external gas;

[0007] Wherein, the first multi-way valve can selectively conduct the milk supply pipeline and the milk outlet pipeline, the air delivery pipeline and the milk supply pipeline, and the air delivery pipeline and the milk outlet pipeline respectively.

[0008] Optionally, the first multi-way valve has a first state in which the milk supply pipeline and the milk outlet pipeline are conducted, and the air delivery pipeline and the milk supply pipeline, as well as the air delivery pipeline and the milk outlet pipeline are blocked;

[0009] The milk path system further includes a first power component. In the first state, the first power component drives the milk liquid to flow from the milk storage cavity through the milk supply pipeline to the milk outlet pipeline.

[0010] Optionally, the first multi-way valve further has a second state in which the gas supply pipeline and the milk supply pipeline are connected, and the milk supply pipeline and the milk outlet pipeline are blocked.

[0011] Optionally, the first multi-way valve further has a second state in which the gas supply pipeline and the milk outlet pipeline are connected, and the milk supply pipeline and the milk outlet pipeline are blocked.

[0012] Optionally, the first multi-way valve further has a second state in which the gas supply pipeline, the milk supply pipeline, and the milk outlet pipeline are connected.

[0013] Optionally, in the first state, the milk storage cavity forms a communicating vessel, so that when the first multi-way valve is switched to the second state, a negative pressure is formed in the milk storage cavity, and the negative pressure sucks the milk liquid in the milk supply pipeline and / or the milk outlet pipeline into the milk storage cavity.

[0014] Optionally, the milk pipeline system further includes a second power component;

[0015] In the second state, the second power component drives external gas to enter through the gas supply pipeline and pushes the milk liquid in the milk supply pipeline and / or the milk outlet pipeline to move.

[0016] Optionally, the second power component includes an air pump disposed adjacent to the gas inlet.

[0017] Optionally, the milk pipeline system further includes a one-way valve, and the one-way valve is disposed in the milk outlet pipeline.

[0018] Optionally, the milk pipeline system further includes a liquid storage tank, and a liquid storage cavity for storing a cleaning liquid is formed inside the liquid storage tank;

[0019] The pipeline assembly further includes a liquid supply pipeline, one end of the liquid supply pipeline is connected to the liquid storage cavity in a communicating manner, and the other end is connected to the milk supply pipeline through a switching valve in a connectable and disconnectable manner, and / or the other end is connected to the milk outlet pipeline through a switching valve in a connectable and disconnectable manner.

[0020] In addition, to achieve the above object, the present invention further provides a milk pipeline system, including:

[0021] A milk box, inside which a milk storage cavity for storing milk liquid is formed; and,

[0022] A pipeline assembly, including a milk supply pipeline, a milk outlet pipeline, and a gas supply pipeline, one end of the milk supply pipeline and the milk outlet pipeline are connected in a connectable and disconnectable manner, the other end of the milk supply pipeline is connected to the milk storage cavity in a communicating manner, and the other end of the milk outlet pipeline forms a milk liquid outlet;

[0023] Among them, the gas supply pipeline is provided with at least two pipelines respectively communicating with the milk supply pipeline and the milk outlet pipeline. The gas supply pipeline can access external gas and push the liquid in the milk supply pipeline back into the milk tank and / or discharge the liquid in the milk outlet pipeline from the milk outlet.

[0024] Optionally, the gas supply pipeline includes a first pipeline communicating with the milk supply pipeline and a second pipeline communicating with the milk outlet pipeline.

[0025] The milk pipeline system further includes a switching valve for respectively controlling the on-off between the first pipeline and the milk supply pipeline and the on-off between the second pipeline and the milk outlet pipeline.

[0026] Optionally, the switching valve includes two first regulating valves respectively arranged on the first pipeline and the second pipeline.

[0027] Optionally, the gas supply pipeline further includes a third pipeline connecting the first pipeline and the second pipeline.

[0028] The switching valve is a second multi-way valve arranged at the connection of the first pipeline, the second pipeline and the third pipeline.

[0029] Optionally, the switching valve further includes a pulse solenoid valve arranged on the first pipeline.

[0030] Optionally, the first pipeline and the second pipeline are independently arranged and each is provided with at least one gas inlet; or,

[0031] The gas supply pipeline further includes a third pipeline connecting the first pipeline and the second pipeline, and the third pipeline is provided with at least one gas inlet.

[0032] Optionally, the milk pipeline system further includes a second regulating valve arranged at the connection of the milk supply pipeline and the milk outlet pipeline to realize the on-off switching between the milk supply pipeline and the milk outlet pipeline through the second regulating valve.

[0033] In addition, to achieve the above object, the present invention further provides a milk-dispensing beverage machine including the milk pipeline system as described above.

[0034] In addition, to achieve the above object, the present invention further provides a control method for a milk pipeline system. The milk pipeline system includes a milk tank and a pipeline assembly. The pipeline assembly includes a milk supply pipeline, a milk outlet pipeline and a gas supply pipeline. One ends of the milk supply pipeline and the milk outlet pipeline are connectable in an on-off manner. The other end of the milk supply pipeline is communicated with the milk tank, and the other end of the milk outlet pipeline forms a milk outlet; the gas supply pipeline is used for accessing external gas.

[0035] The control method of the milk path system includes:

[0036] After the preparation of the milk beverage is completed, disconnect the milk supply pipeline and the milk outlet pipeline and then perform a cleaning operation;

[0037] Among them, the cleaning operation includes:

[0038] Connect the gas transmission pipeline and the milk supply pipeline; and / or,

[0039] Connect the gas transmission pipeline and the milk outlet pipeline.

[0040] Optionally, the gas transmission pipeline includes a first pipeline and a second pipeline. The first pipeline is connected to the milk supply pipeline, and the second pipeline is connected to the milk outlet pipeline.

[0041] Optionally, the milk path system further includes a switching valve, and the switching valve is used to respectively control the on-off between the first pipeline and the milk supply pipeline, and the on-off between the second pipeline and the milk outlet pipeline.

[0042] Optionally, the process of preparing the milk beverage includes an operation of preparing milk foam, and the operation of preparing milk foam includes:

[0043] Connect the milk supply pipeline and the milk outlet pipeline;

[0044] Connect the gas transmission pipeline and the milk supply pipeline, and control the gas transmission pipeline to intermittently introduce gas into the milk supply pipeline.

[0045] Optionally, after confirming that the preparation of the milk beverage is completed and disconnecting the milk supply pipeline and the milk outlet pipeline, connect the gas transmission pipeline and the milk outlet pipeline.

[0046] Optionally, the milk path system further includes a liquid storage tank. A liquid storage cavity for storing cleaning liquid is formed inside the liquid storage tank. The pipeline assembly further includes a liquid supply pipeline. One end of the liquid supply pipeline is connected to the liquid storage cavity in a communicating manner, and the other end is connected to the milk supply pipeline and / or the milk outlet pipeline in a connectable and disconnectable manner;

[0047] The control method of the milk path system further includes:

[0048] After the preparation of the milk beverage is completed, perform a cleaning operation;

[0049] Among them, the cleaning operation includes:

[0050] Connect the liquid supply pipeline and the milk supply pipeline; and / or,

[0051] Connect the liquid supply pipeline and the milk outlet pipeline.

[0052] Optionally, the cleaning operation is performed before or after the emptying operation.

[0053] Optionally, after confirming the end of the cleaning operation, the control method of the milk pipeline system further includes:

[0054] Connect the milk supply pipeline and the milk outlet pipeline;

[0055] Connect the gas transmission pipeline and the milk supply pipeline, so that the gas introduced through the gas transmission pipeline flows through the milk supply pipeline to the milk outlet pipeline.

[0056] In the technical solution provided by the present invention, when the first multi-way valve connects the milk supply pipeline and the milk outlet pipeline, driven by a dedicated power component or borrowing an external power component, the milk liquid is pumped out from the milk storage cavity, flows through the milk supply pipeline and the milk outlet pipeline in sequence, and is discharged outward through the milk liquid outlet, completing the milk liquid preparation operation of the whole machine; then, by operating the first multi-way valve to switch to connect the gas transmission pipeline and the milk supply pipeline, the residual milk liquid at the milk supply pipeline can be reversely pushed into the milk storage cavity by means of the external gas introduced through the gas inlet, completing the milk liquid emptying operation of the milk supply pipeline; and / or by operating the first multi-way valve to switch to connect the gas transmission pipeline and the milk outlet pipeline, the residual milk liquid at the milk outlet pipeline can be reversely pushed into the milk supply pipeline by means of the external gas introduced through the gas inlet, and the residual milk liquid at the milk supply pipeline can be reversely pushed into the milk storage cavity in sequence, completing the milk liquid emptying operation of the milk outlet pipeline and the milk supply pipeline. The present invention can efficiently empty the residual milk liquid in the milk pipeline system, improve the quality of milk liquid preparation, and improve the use reliability of the whole machine. Description of the Drawings

[0057] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0058] Figure 1 It is a schematic structural diagram of the first embodiment of the milk pipeline system provided by the present invention;

[0059] Figure 2 For Figure 1 the schematic structural diagram of the milk pipeline system in the first state in

[0060] Figure 3 For Figure 1 the schematic structural diagram of the milk pipeline system in the second state (the gas transmission pipeline is connected to the milk supply pipeline) in

[0061] Figure 4 ForFigure 1 Schematic diagram of the milk pipeline system in the second state (the gas pipeline is connected to the milk outlet pipeline);

[0062] Figure 5 is Figure 1 Schematic diagram of the milk pipeline system in the second state (the gas pipeline is connected to the milk supply pipeline and the milk outlet pipeline);

[0063] Figure 6 is Figure 1 Schematic diagram of the milk pipeline system in the cleaning state;

[0064] Figure 7 Schematic diagram of the structure of the second embodiment of the milk pipeline system provided by the present invention;

[0065] Figure 8 Schematic diagram of the structure of the third embodiment of the milk pipeline system provided by the present invention;

[0066] Figure 9 Schematic diagram of the structure of the fourth embodiment of the milk pipeline system provided by the present invention;

[0067] Figure 10 Schematic diagram of the structure of the fifth embodiment of the milk pipeline system provided by the present invention.

[0068] Explanation of the reference numerals in the drawings:

[0069] 100 milk box; 110 milk storage cavity; 210 milk supply pipeline; 220 milk outlet pipeline; 221 milk liquid outlet; 230 gas pipeline; 230a gas inlet; 231 first pipeline; 232 second pipeline; 233 third pipeline; 240 liquid supply pipeline; 310 first multi-way valve; 321 first regulating valve; 322 second multi-way valve; 323 pulse solenoid valve; 330 second regulating valve; 340 on-off valve; 350 check valve; 400 first power component; 500 second power component; 610 liquid storage tank; 611 liquid storage cavity.

[0070] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Detailed implementation manners

[0071] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0072] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, then such directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture (as shown in the drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0073] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present invention, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0074] Please refer to Figures 1 to 10 , the present invention provides a milk path system. This milk path system can be used independently to form an independent body device. Or the milk path system can be applied in a milk - producing beverage machine and be used independently in the milk - producing beverage machine or cooperate with other mechanisms in the milk - producing beverage machine for use. Therefore, the present invention also provides a milk - producing beverage machine, which can be, but is not limited to, a coffee machine, a soymilk machine, etc. The milk - producing beverage machine can at least provide milk liquid. Further, according to actual needs, the milk - producing beverage machine can be additionally integrated with functions such as grinding function, brewing function, etc.

[0075] Specifically, the milk path system includes a milk tank 100 and a pipeline assembly. An internal milk storage cavity 110 for storing milk liquid is formed inside the milk tank 100. The pipeline assembly includes a milk supply pipeline 210, a milk outlet pipeline 220, and an air supply pipeline 230. The milk supply pipeline 210, the milk outlet pipeline 220, and the air supply pipeline 230 are connected in a switchable manner through a first multi - way valve 310. The other end of the milk supply pipeline 210 is connected in communication with the milk storage cavity 110. The other end of the milk outlet pipeline 220 constitutes a milk liquid outlet 221. The other end of the air supply pipeline 230 constitutes a gas inlet 230a for accessing external gas.

[0076] Among them, the first multi - way valve 310 can selectively conduct the milk supply pipeline 210 and the milk outlet pipeline 220, the air supply pipeline 230 and the milk supply pipeline 210, and the air supply pipeline 230 and the milk outlet pipeline 220 respectively.

[0077] In the technical solution provided by the present invention, when the first multi-way valve 310 conducts the milk supply pipeline 210 and the milk outlet pipeline 220, driven by a specially provided power component or by borrowing an external power component, the milk liquid is pumped out from the milk storage cavity 110, flows through the milk supply pipeline 210 and the milk outlet pipeline 220 in sequence, and is discharged outward through the milk liquid outlet 221, completing the milk liquid preparation operation of the whole machine.

[0078] Then, by operating the first multi-way valve 310 to switch to conduct the gas transmission pipeline 230 and the milk supply pipeline 210, the residual milk liquid at the milk supply pipeline 210 can be reversely pushed into the milk storage cavity 110 by means of the external gas entering through the gas inlet 230a, completing the milk liquid emptying operation of the milk supply pipeline 210. And / or by operating the first multi-way valve 310 to switch to conduct the gas transmission pipeline 230 and the milk outlet pipeline 220, the residual milk liquid at the milk outlet pipeline 220 can be reversely pushed into the milk supply pipeline 210 by means of the external gas entering through the gas inlet 230a, and the residual milk liquid at the milk supply pipeline 210 can be reversely pushed into the milk storage cavity 110 together in sequence, completing the milk liquid emptying operation of the milk outlet pipeline 220 and the milk supply pipeline 210. The present invention can efficiently empty the residual milk liquid in the milk path system, improve the milk liquid preparation quality, and improve the use reliability of the whole machine.

[0079] It should be noted that the valve body structures such as the first multi-way valve 310 involved in the above and the following embodiments are mainly used to switch the on-off states of pipelines such as the gas transmission pipeline 230. However, it can be understood that, for example, between the milk supply pipeline 210 and the milk storage cavity 110, and at the milk liquid outlet 221 of the milk outlet pipeline 220, valve body structures or switch structures can also be provided according to actual needs, so as to be able to independently switch the on-off states between the milk supply pipeline 210 and the milk storage cavity 110, the switch states at the milk liquid outlet 221 of the milk outlet pipeline 220, etc., to meet the requirements of normal functions.

[0080] The first multi-way valve 310 can be specifically set with the number of channels according to actual needs. For example, it can be specifically set as a three-way valve or a four-way valve, etc., to realize the on-off control and commutation control of each pipeline connected thereto.

[0081] Specifically, please refer to Figures 1 to 2 , in a specific structure, the first multi-way valve 310 can be switched to conduct the milk supply pipeline 210 and the milk outlet pipeline 220, and cut off the gas transmission pipeline 230 and the milk supply pipeline 210, as well as cut off the gas transmission pipeline 230 and the milk outlet pipeline 220. At this time, the milk path system is in the first state.

[0082] The milking system also includes a first power unit 400, which can be, but is not limited to, a pump, such as a gear pump. In this first state, the milk storage chamber 110, the milk supply line 210, and the milk outlet line 220 remain connected. Once the first power unit 400 is activated, milk is pumped out of the milk storage chamber 110, flowing sequentially through the milk supply line 210 and the milk outlet line 220, and finally discharged through the milk outlet 221, completing the milk preparation process. During this process, the air supply line 230 and the milk supply line 210, as well as the air supply line 230 and the milk outlet line 220, are isolated, respectively, to prevent external air from entering the milk supply line 210 and the milk outlet line 220. Conversely, milk in the milk supply line 210 and the milk outlet line 220 does not enter the air supply line 230, preventing interference between the two.

[0083] For example, after one or several milk preparation operations, considering that milk may remain in the milk supply pipeline 210 and / or the milk discharge pipeline 220 , one or several milk emptying operations may be performed.

[0084] Please combine the specific Figure 1 and Figure 3 In the first application example of the milk emptying operation, the first multi-way valve 310 can be switched to connect the air supply line 230 and the milk supply line 210, while isolating the milk supply line 210 from the milk outlet line 220. At this point, the milk system is in the second state. During this process, external air can enter the air supply line 230 through the air inlet and then enter the milk supply line 210, pushing the remaining milk in the milk supply line 210 back into the milk storage chamber 110, ensuring that there is essentially no milk remaining in the milk supply line 210, and completing the operation of emptying the milk in the milk supply line 210 into the milk storage chamber 110.

[0085] Of course, based on the first application example described above, further, when the milk circuit system is additionally provided with another pipeline structure or cavity structure (hereinafter defined as a first transfer cavity for ease of understanding) adjacent to the milk storage cavity 110, another valve structure can be additionally provided to separate the milk supply pipeline 210 from the milk storage cavity 110, and to connect the milk supply pipeline 210 to the first transfer cavity. The first transfer cavity allows residual milk that is reversely repelled by external air to enter the first transfer cavity. It can then be temporarily stored or subsequently disposed of in a centralized manner, ensuring that residual milk in the milk supply pipeline 210 does not contaminate the milk stored in the milk storage cavity 110 after entering the milk storage cavity 110, thereby ensuring higher quality in subsequent milk preparation operations.

[0086] And / or please combine Figure 1 and Figure 4, in the second application example of the milk liquid emptying operation, the first multi-way valve 310 can be switched to conduct the gas pipeline 230 and the milk outlet pipeline 220, and cut off the milk supply pipeline 210 and the milk outlet pipeline 220. At this time, the milk pipeline system is in the second state. During this process, external gas can enter the gas pipeline 230 through the gas inlet, and then enter the milk outlet pipeline 220, pushing the residual milk liquid in the milk outlet pipeline 220 forward to the milk liquid outlet 221, ensuring that there is basically no residual milk liquid in the milk outlet pipeline 220, and realizing the operation of emptying the milk liquid in the milk outlet pipeline 220 outward.

[0087] Of course, similarly, based on the above second application example, further, when the milk pipeline system is additionally provided with another pipeline structure or cavity structure (for the convenience of understanding, hereinafter defined as the second transfer cavity) near the milk liquid outlet 221, another valve body structure can be additionally provided to conduct the milk outlet pipeline 220 and the second transfer cavity and close the milk liquid outlet 221, so that the residual milk liquid pushed by the external gas enters the second transfer cavity and is temporarily stored or centrally discharged in the second transfer cavity, so that the residual milk liquid in the milk outlet pipeline 220 will not be discharged outward through the milk liquid outlet 221, resulting in affecting other liquid outlet operations of the whole machine, and reducing the pollution to the front part of the whole machine.

[0088] And / or specifically, please combine Figure 1 and Figure 5 , in the third application example of the milk liquid emptying operation, the first multi-way valve 310 can be switched to conduct the gas pipeline 230, the milk supply pipeline 210 and the milk outlet pipeline 220. At this time, the milk pipeline system is in the second state. During this process, external gas can enter the gas pipeline 230 through the gas inlet, and push the residual milk liquid in the milk supply pipeline 210 and the milk outlet pipeline 220 into the milk storage cavity 110 respectively (specifically, for example, when a negative pressure is only formed in the milk storage cavity 110). Or push the residual milk liquid in the milk supply pipeline 210 into the milk storage cavity 110 respectively, and at the same time push the residual milk liquid in the milk outlet pipeline 220 to the milk liquid outlet 221 (specifically, for example, when negative pressures are formed in the milk storage cavity 110 and the milk liquid outlet 221 respectively and do not affect each other). In this way, it can be ensured that there is basically no residual milk liquid in the milk supply pipeline 210 and the milk outlet pipeline 220, and the milk liquid emptying operation of the milk supply pipeline 210 and the milk outlet pipeline 220 is realized. Of course, similarly to the above, based on the third application example, a first transfer cavity can also be further provided as above, which will not be elaborated here.

[0089] It can be understood that in the above first application example to the second application example, sufficient driving force needs to be provided in the pipeline assembly to drive external gas into the gas pipeline 230 and push the residual milk liquid in the milk supply pipeline 210 and / or the milk outlet pipeline 220 to move as required. Then in a further solution:

[0090] When the milk pipeline system includes the first power component 400 as described above, the driving force for driving external gas to enter can directly come from the first power component 400. Specifically for the above first application example and the third application example, the first power component 400 can be directly arranged at the milk supply pipeline 210; or for the above second example, the first power component 400 can be directly arranged at the milk outlet pipeline 220.

[0091] And / or as Figure 7 shown, the milk pipeline system may further include a second power component 500. The second power component 500 can be arranged at the gas transmission pipeline 230, for example, specifically manifested as an air pump, and is arranged adjacent to the gas inlet 230a. In the second state, the second power component 500 drives external gas to enter through the gas transmission pipeline 230 and pushes the milk liquid in the milk supply pipeline 210 and / or the milk outlet pipeline 220 to move. The differentiated arrangement of the second power component 500 and the above-mentioned first power component 400, on the one hand, makes the arrangement orientation of the first power component 400 in the pipeline assembly more flexible and diverse, which helps to be more suitable for performing milk liquid preparation operations; at the same time, it also makes the arrangement orientation of the second power component 500 in the pipeline assembly more flexible and diverse, which helps to be more suitable for performing milk liquid emptying operations; on the other hand, it also enables the first power component 400 and the second power component 500 to independently adjust their respective operating parameters according to actual needs.

[0092] And / or it can be specifically set that in the first state, the milk storage cavity 110 forms a communicating vessel. At this time, the first power component 400 operates normally and can normally drive the milk liquid to be pumped outwards through the milk storage cavity 110. And when the first multi-way valve 310 switches the first state to the second state, under the action of gravity, a negative pressure is formed in the milk storage cavity 110, and the negative pressure sucks the milk liquid in the milk supply pipeline 210 and / or the milk outlet pipeline 220 into the milk storage cavity 110.

[0093] In addition, please combine Figure 1 and Figure 6 , based on the above one or several embodiments, further, the milk pipeline system further includes a liquid storage tank 610. An internal liquid storage cavity 611 for storing cleaning liquid is formed in the liquid storage tank 610; the pipeline assembly further includes a liquid supply pipeline 240. One end of the liquid supply pipeline 240 is connected to the liquid storage cavity 611 in a communicating manner, and the other end is connected to the milk supply pipeline 210 through a switching valve 340 in a connectable and disconnectable manner, and / or the other end is connected to the milk outlet pipeline 220 through a switching valve 340 in a connectable and disconnectable manner. The cleaning liquid can specifically be clean water, or it can also be a solution formed by mixing clean water and a cleaning agent.

[0094] When it is necessary to clean the milk supply pipeline 210, the switch valve 340 can be operated to make the liquid storage cavity 611, the liquid supply pipeline 240 and the milk supply pipeline 210 communicate. Further, the milk supply pipeline 210 and the milk storage cavity 110 can be kept separated. In this way, the cleaning liquid can enter the liquid supply pipeline 240 and the milk supply pipeline 210 through the liquid storage cavity 611, and the milk supply pipeline 210 can be cleaned without entering the milk storage cavity 110. At this time, further combined with the above-mentioned structural design of the first transfer cavity, the cleaning liquid flowing through the milk supply pipeline 210 can be finally guided to the first transfer cavity to form waste liquid.

[0095] When it is necessary to clean the milk outlet pipeline 220, the switch valve 340 can be operated to make the liquid storage cavity 611, the liquid supply pipeline 240 and the milk outlet pipeline 220 communicate. In this way, the cleaning liquid can enter the liquid supply pipeline 240 and the milk outlet pipeline 220 through the liquid storage cavity 611, and the milk outlet pipeline 220 can be cleaned. During this process, the milk outlet 221 can be kept open, so that the cleaning liquid flowing through the milk supply and outlet pipeline 220 is finally discharged outwards through the milk outlet 221. Or further combined with the above-mentioned structural design of the second transfer cavity, the cleaning liquid flowing through the milk outlet pipeline 220 can be finally guided to the second transfer cavity to form waste liquid.

[0096] Of course, when it is necessary to clean the milk supply pipeline 210 and the milk outlet pipeline 220, the switch valve 340 and the first multi-way valve 310 can be operated together to make the liquid storage cavity 611, the liquid supply pipeline 240, the milk supply pipeline 210 and the milk outlet pipeline 220 communicate. At this time, the milk supply pipeline 210 and the milk storage cavity 110 can still be kept separated. And the final waste liquid can be selectively discharged outwards through the above-mentioned milk outlet 221, enter the first transfer cavity and / or enter the second transfer cavity, which will not be elaborated.

[0097] In addition, the present invention also provides a milk pipeline system and a milk dispensing machine to which it is applied. The milk pipeline system includes the milk box 100 and the pipeline assembly as described above. A milk storage cavity 110 for storing milk is formed inside the milk box 100. The pipeline assembly includes a milk supply pipeline 210, a milk outlet pipeline 220 and an air supply pipeline 230. One ends of the milk supply pipeline 210 and the milk outlet pipeline 220 are connected in a switchable manner. The other end of the milk supply pipeline 210 is connected to communicate with the milk storage cavity 110. The other end of the milk outlet pipeline 220 constitutes a milk outlet 221.

[0098] In this design, to achieve the aforementioned objectives, the air supply line 230 can be specifically configured as at least two lines, one connected to the milk supply line 210 and the other to the milk outlet line 220. Guided by these two lines, the air supply line 230 can receive external air and withdraw the liquid in the milk supply line 210 into the milk storage chamber 110 of the milk tank 100. Furthermore, / or, the air supply line 230 can receive external air and discharge the liquid in the milk outlet line 220 through the milk outlet 221.

[0099] Specifically, the two pipelines of the gas transmission pipeline 230 are a first pipeline 231 connected to the milk supply pipeline 210 and a second pipeline 232 connected to the milk discharge pipeline 220 .

[0100] When the first conduit 231 is open, the first conduit 231, the milk supply conduit 210, and the milk storage chamber 110 are connected. The first conduit 231 actively or passively draws in outside air and directs it toward the milk storage chamber 110. This flow of air pushes any liquid remaining in the milk supply conduit 210 into the milk storage chamber 110. When the first conduit 231 is blocked, outside air is prevented from entering the milk supply conduit 210 and the milk storage chamber 110, ensuring that the milk in the milk storage chamber 110 and the milk supply conduit 210 remains fresh and less susceptible to contamination.

[0101] Similarly, when the second pipe 232 is opened, it communicates with the milk outlet pipe 220. The second pipe 232 actively or passively draws in outside air and directs it toward the milk outlet 221. This airflow pushes any liquid remaining in the milk outlet pipe 220 toward the milk outlet 221 for discharge. When the second pipe 232 is blocked, outside air is prevented from entering the milk outlet pipe 220.

[0102] The provision of the first pipe 231 and the second pipe 232 helps to keep the milk emptying operation at the milk supply pipe 210 and the milk emptying operation at the milk discharge pipe 220 relatively independent, thereby preventing the liquid (especially when the liquid is not milk) pushed from the milk discharge pipe 220 from entering the milk supply pipe 210 or the milk storage chamber 110.

[0103] In order to realize the switching control of the on-off state of the first pipeline 231 and the on-off state of the second pipeline 232, the milk pipeline system further includes a switching valve, which is used to control the on-off state between the first pipeline 231 and the milk supply pipeline 210, and the on-off state between the second pipeline 232 and the milk discharge pipeline 220.

[0104] There are several options for the specific setting of the switching valve:

[0105] For example Figure 8As shown, the switching valve may specifically include two first regulating valves 321 respectively arranged in the first pipeline 231 and the second pipeline 232. The two first regulating valves 321 are independently arranged. The types of the two first regulating valves 321 can be set to be the same or different according to actual needs. For example, when the control requirement for flow rate is higher, a flow valve can be selected. When the control requirement for air pressure is higher, a pressure valve can be selected, and so on.

[0106] Or for example Figure 9 As shown, the gas pipeline 230 further includes a third pipeline 233 connecting the first pipeline 231 and the second pipeline 232; the switching valve is a second multi-way valve 322 arranged at the connection of the first pipeline 231, the second pipeline 232 and the third pipeline 233. In this way, that is, it is equivalent to the first pipeline 231 and the second pipeline 232 sharing the third pipeline 233. The third pipeline 233 constitutes the inlet section of the external gas. At this time, by specifically setting the specification parameters such as the size and extension shape of the third pipeline 233, the external gas can be specifically slowed down, accelerated, deflected, etc. The third pipeline 233 can also be set to a structure that is more convenient for connecting to an external gas source. The external gas source only needs to be connected to the third pipeline 233 to meet the gas supply requirements of the first pipeline 231 and the second pipeline 232.

[0107] Specifically, the switching valve further includes a pulse solenoid valve 323 arranged in the first pipeline 231. Similarly to the above, the milk and beverage machine may be preset with a milk foam preparation function and then can perform the operation of preparing milk foam. When the pulse solenoid valve 323 is arranged in the first pipeline 231, the first pipeline 231 can intermittently supply gas to the milk supply pipeline 210, so that the milk liquid at the connection of the milk storage cavity 110 and the milk supply pipeline 210 can be injected with air and form milk foam. The milk foam flows through the milk outlet pipeline 220 and finally flows out through the milk liquid outlet 221.

[0108] The pulse solenoid valve 323 can directly constitute the above-mentioned first regulating valve 321 or second multi-way valve 322. Or the pulse solenoid valve 323 can be independently arranged separately from the above-mentioned first regulating valve 321 or second multi-way valve 322. Taking the first regulating valve 321 as an example, only the pulse solenoid valve 323 may be arranged at the first pipeline 231 at this time. Or the first regulating valve 321 and the pulse solenoid valve 323 may be arranged at intervals at the first pipeline 231.

[0109] Based on the above embodiments, there is no limitation on the specific forms of the first pipeline 231 and the second pipeline 232. For example Figure 10As shown, in one design, the first pipeline 231 and the second pipeline 232 are independently arranged with respect to each other, and each is provided with at least one gas inlet 230a. At this time, the first pipeline 231 and the second pipeline 232 are completely independent and there is no common pipeline section. This enables the first pipeline 231 and the second pipeline 232 to be separately set according to actual needs in terms of the number of openings, opening orientations, opening sizes, etc. of the gas inlet 230a, as well as in terms of their respective aspects such as size, material, extended shape, etc.

[0110] Or as Figures 8 to 9 shown, the gas supply pipeline 230 further includes a third pipeline 233 connecting the first pipeline 231 and the second pipeline 232, and the third pipeline 233 is provided with at least one gas inlet 230a. At this time, as described above, the first pipeline 231 and the second pipeline 232 both share the third pipeline 233. The gas inlet 230a of the third pipeline 233 can be specifically set according to actual needs in terms of the number of openings, opening orientations, opening sizes, etc., as well as in terms of the size, material, extended shape, etc. of the third pipeline 233. The setting of the third pipeline 233 helps to simplify the overall routing of the milk pipeline system and the connection relationship between the third pipeline 233 and the external gas source.

[0111] As can be seen from the above, there is a connection relationship between the milk supply pipeline 210 and the milk outlet pipeline 220. In actual application, the milk supply pipeline 210 and the milk outlet pipeline 220 can be directly defined by one pipe body, that is, the milk supply pipeline 210 and the milk outlet pipeline 220 are integrally formed. Or the milk supply pipeline 210 and the milk outlet pipeline 220 can be separately defined by one pipe body and then connected in a detachable or non-detachable manner.

[0112] The milk supply pipeline 210 and the milk outlet pipeline 220 can be kept in a conducting state. Or according to actual needs, the milk supply pipeline 210 and the milk outlet pipeline 220 can be set to be adjustable for on-off. For example, in one embodiment, the milk pipeline system further includes a second regulating valve 330 provided at the connection between the milk supply pipeline 210 and the milk outlet pipeline 220 to realize the on-off switching between the milk supply pipeline 210 and the milk outlet pipeline 220 through the second regulating valve 330. There are various solutions for the second regulating valve 330. For example, the second regulating valve 330 can be a one-way valve 350. The one-way valve 350 enables the path of the liquid flowing from the milk supply pipeline 210 to the milk outlet pipeline 220 to be conducting. And the one-way valve 350 blocks the path of the liquid flowing from the milk outlet pipeline 220 to the milk supply pipeline 210. Of course, the second regulating valve 330 can also be the above-mentioned valve bodies such as flow valves, pressure valves, etc. Regardless of the flow direction, the on-off between the milk supply pipeline 210 and the milk outlet pipeline 220 can be flexibly switched.

[0113] The milk-dispensing beverage machine generally further includes a control device. The control device may include: a processor, such as a Central Processing Unit (CPU), a communication bus, a user interface, a network interface, and a memory. Among them, the communication bus is used to realize the connection and communication between these components. The user interface may include a display screen (Display) and an input unit such as a keyboard (Keyboard). Optionally, the user interface may further include a standard wired interface and a wireless interface. Optionally, the network interface may include a standard wired interface and a wireless interface (such as a Wireless-Fidelity (WI-FI) interface). The memory may be a high-speed Random Access Memory (RAM) or a stable Non-Volatile Memory (NVM), such as a disk memory. Optionally, the memory may also be a storage device independent of the aforementioned processor.

[0114] The memory, as a storage medium, may include an operating system, a network communication module, a user interface module, and a control program for the milk path system.

[0115] In the control device, the network interface is mainly used for data communication with a network server; the user interface is mainly used for data interaction with the user; the processor and the memory in the control device of the present invention may be disposed in the milk-dispensing beverage machine or in the milk path system. The control device calls the control program for the milk path system stored in the memory through the processor and executes the control method for the milk path system provided by the embodiments of the present invention.

[0116] In addition, the present invention further provides a control method for a milk path system. The milk path system includes a milk tank 100 and a pipeline assembly. The pipeline assembly includes a milk supply pipeline 210, a milk outlet pipeline 220, and an air supply pipeline 230. One end of the milk supply pipeline 210 and the milk outlet pipeline 220 are connected in a switchable manner. The other end of the milk supply pipeline 210 is connected to the milk tank 100 in a communicating manner. The other end of the milk outlet pipeline 220 forms a milk liquid outlet 221; the air supply pipeline 230 is used to access external gas. It can be understood that the milk path system may be, but is not limited to, the milk path system mentioned in any of the above embodiments.

[0117] Specifically, the control method for the milk path system provided by the present invention includes:

[0118] Step S100: After the preparation of the milk beverage is completed, disconnect the milk supply pipeline 210 and the milk outlet pipeline 220 and then perform an emptying operation.

[0119] In this embodiment, the control device responds to a milk beverage preparation instruction. The milk beverage preparation instruction can be directly generated by a user's manual trigger. For example, the user triggers the milk beverage preparation instruction through an interaction device provided on the body. The interaction device can be, but is not limited to, a touch screen, a button, a voice recognition module, etc. Of course, the milk beverage preparation instruction can also be associated and generated by the body itself according to a preset program. The preset program can be set according to actual needs.

[0120] When it is confirmed that the milk beverage preparation operation is completed, that is, after the milk liquid in the milk storage cavity 110 flows through the milk supply pipeline 210 and the milk outlet pipeline 220 and is finally discharged outward from the milk liquid outlet 221. The control device controls the operation of, for example, the second regulating valve 330 described above, so that the milk supply pipeline 210 and the milk outlet pipeline 220 are disconnected, and simultaneously or subsequently, an emptying operation is performed. The emptying operation is executed in response to an emptying instruction. The emptying instruction can be associated and stored with the above-mentioned milk beverage preparation instruction.

[0121] As can be seen from the above, the emptying operation includes the emptying operation of the milk supply pipeline 210 and / or the emptying operation of the milk outlet pipeline 220. Therefore, specifically, the process of performing the emptying operation includes controlling, for example, the first multi-way valve 310 or the switching valve described above to conduct the gas transmission pipeline 230 and the milk supply pipeline 210; and / or conduct the gas transmission pipeline 230 and the milk outlet pipeline 220. When the gas transmission pipeline 230 and the milk supply pipeline 210 are connected, and / or when the gas transmission pipeline 230 and the milk outlet pipeline 220 are connected, as described above, external gas can be directly connected to the gas transmission pipeline 230 under the action of negative pressure. Or simultaneously or subsequently start the operation of the first power component 400 / second power component 500 to connect external gas into the gas transmission pipeline 230. The above-mentioned emptying operation can be performed one or several times according to actual needs. The alternating manner of the two emptying operations can also be set according to actual needs.

[0122] At this time, the gas transmission pipeline 230 can include a first pipeline 231 and a second pipeline 232 as described above. The first pipeline 231 is connected to the milk supply pipeline 210, and the second pipeline 232 is connected to the milk outlet pipeline 220. The milk path system can also include a switching valve as described above. The switching valve is used to respectively control the on / off between the first pipeline 231 and the milk supply pipeline 210, and the on / off between the second pipeline 232 and the milk outlet pipeline 220. Details are not described one by one.

[0123] The above-mentioned process of preparing milk drinks may include a milk foam preparation operation according to actual needs. Similarly to the above, the milk foam preparation operation is executed in response to a milk foam preparation instruction. The milk foam preparation operation includes: connecting the milk supply pipeline 210 and the milk outlet pipeline 220; and connecting the gas transmission pipeline 230 and the milk supply pipeline 210, and controlling the gas transmission pipeline 230 to intermittently introduce gas into the milk supply pipeline 210. The intermittent gas introduction can be controlled and achieved by the pulse solenoid valve 323 as described above. Through the intermittent gas introduction, delicate and uniform milk foam can be generated at the milk supply pipeline 210.

[0124] Next, after confirming the end of milk drink preparation and disconnecting the milk supply pipeline 210 and the milk outlet pipeline 220, connect the gas transmission pipeline 230 and the milk outlet pipeline 220, and the milk outlet pipeline 220 can be emptied by external gas. This emptying operation can be performed one or several times according to actual needs.

[0125] As described above, in an application, the milk path system further includes a liquid storage tank 610. A liquid storage cavity 611 for storing cleaning liquid is formed inside the liquid storage tank 610. The pipeline assembly further includes a liquid supply pipeline 240. One end of the liquid supply pipeline 240 is connected and communicated with the liquid storage cavity 611, and the other end is connected to the milk supply pipeline 210 and / or the milk outlet pipeline 220 in a connectable and disconnectable manner. At this time, the milk path system control method further includes:

[0126] Step S200: After the milk drink preparation is completed, perform a cleaning operation.

[0127] Similarly to the above, the cleaning operation is executed in response to a cleaning instruction. The cleaning instruction can be associated and stored with the above-mentioned milk drink preparation instruction. Among them, the cleaning operation includes: connecting the liquid supply pipeline 240 and the milk supply pipeline 210, and / or connecting the liquid supply pipeline 240 and the milk outlet pipeline 220. That is, according to actual needs, the milk supply pipeline 210 and / or the milk outlet pipeline 220 can be cleaned specifically. The cleaning liquid stored in the liquid storage cavity 611 and / or discharged through the liquid supply pipeline 240 can be, but is not limited to, clean water, high-temperature hot water, high-temperature and high-pressure steam, a solution containing a cleaning agent, etc.

[0128] According to actual needs, the cleaning operation is performed before or after the emptying operation. The cleaning operation and the emptying operation can be alternately performed one or several times.

[0129] In addition, when it is confirmed that the cleaning operation is completed, the control method of the milk path system further includes:

[0130] Step S300: Connect the milk supply pipeline 210 and the milk outlet pipeline 220.

[0131] Step S400: Connect the gas transmission pipeline 230 and the milk supply pipeline 210, so that the gas introduced through the gas transmission pipeline 230 flows through the milk supply pipeline 210 to the milk outlet pipeline 220.

[0132] In this embodiment, after performing the cleaning operation one or several times, correspondingly, the above-mentioned cleaning liquid will remain in the milk outlet pipeline 220 and / or the milk supply pipeline 210. The cleaning liquid can evaporate naturally. Or by connecting the gas pipeline 230, the milk supply pipeline 210 and the milk outlet pipeline 220, external gas is introduced into the gas pipeline 230 and flows through the milk supply pipeline 210 and the milk outlet pipeline 220 in sequence, so as to dry the cleaning liquid remaining in the milk outlet pipeline 220 and / or the milk supply pipeline 210, making the milk outlet pipeline 220 and / or the milk supply pipeline 210 dry and clean, which helps to improve the quality of the subsequent milk output.

[0133] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A milk line system, characterized in that, Comprising: A milk box, inside which there is a milk storage cavity for storing milk liquid; And, A pipeline assembly, including a milk supply pipeline, a milk outlet pipeline and an air supply pipeline. The milk supply pipeline, the milk outlet pipeline and the air supply pipeline are connected in a switchable manner through a first multi-way valve. The other end of the milk supply pipeline is connected to the milk storage cavity in a communicating manner. The other end of the milk outlet pipeline forms a milk liquid outlet. The other end of the air supply pipeline forms a gas inlet for accessing external gas; Wherein, the first multi-way valve can selectively conduct the milk supply pipeline and the milk outlet pipeline, the air supply pipeline and the milk supply pipeline, and the air supply pipeline and the milk outlet pipeline respectively.

2. The milk line system according to claim 1, characterized in that, The first multi-way valve has a first state in which the milk supply pipeline and the milk outlet pipeline are conducted, and the air supply pipeline and the milk supply pipeline, as well as the air supply pipeline and the milk outlet pipeline are blocked; The milk pipeline system further includes a first power component. In the first state, the first power component drives the milk liquid to flow from the milk storage cavity through the milk supply pipeline to the milk outlet pipeline.

3. The milk line system according to claim 2, wherein, The first multi-way valve further has a second state in which the air supply pipeline and the milk supply pipeline are conducted, and the milk supply pipeline and the milk outlet pipeline are blocked.

4. The milk duct system according to claim 2, characterized in that, The first multi-way valve further has a second state in which the air supply pipeline and the milk outlet pipeline are conducted, and the milk supply pipeline and the milk outlet pipeline are blocked.

5. The milk line system according to claim 2, characterized in that, The first multi-way valve further has a second state in which the air supply pipeline, the milk supply pipeline and the milk outlet pipeline are conducted.

6. The milk duct system according to claim 3 or 5, characterized in that, In the first state, the milk storage cavity forms a communicating vessel, so that when the first multi-way valve is switched to the second state, a negative pressure is formed in the milk storage cavity, and the negative pressure sucks the milk liquid in the milk supply pipeline and / or the milk outlet pipeline into the milk storage cavity.

7. The milk line system according to any one of claims 3 to 5, characterized in that, The milk pipeline system further includes a second power component; In the second state, the second power component drives external gas to enter through the air supply pipeline and pushes the milk liquid in the milk supply pipeline and / or the milk outlet pipeline to move.

8. The milk line system according to claim 7, characterized in that, The second power component includes an air pump disposed adjacent to the gas inlet.

9. The milk line system according to claim 1, characterized in that The milk pipeline system further includes a one-way valve, and the one-way valve is disposed in the milk outlet pipeline.

10. The milk line system according to claim 1, characterized in that, The milk pipeline system further includes a liquid storage tank, and inside the liquid storage tank there is a liquid storage cavity for storing cleaning liquid; The pipeline assembly further includes a liquid supply pipeline. One end of the liquid supply pipeline is connected to the liquid storage cavity in a communicating manner, and the other end is connected to the milk supply pipeline through a switch valve in a switchable manner, and / or the other end is connected to the milk outlet pipeline through a switch valve in a switchable manner.

11. A milk path system, characterized in that, Comprising: A milk box, inside which there is a milk storage cavity for storing milk liquid; And, A pipeline assembly, including a milk supply pipeline, a milk outlet pipeline and an air supply pipeline. One end of the milk supply pipeline and the milk outlet pipeline are connected in a switchable manner. The other end of the milk supply pipeline is connected to the milk storage cavity in a communicating manner. The other end of the milk outlet pipeline forms a milk liquid outlet; Among them, the gas supply pipeline is provided with at least two pipelines respectively communicating with the milk supply pipeline and the milk outlet pipeline. The gas supply pipeline can access external gas and withdraw the liquid in the milk supply pipeline into the milk tank and / or discharge the liquid in the milk outlet pipeline from the milk liquid outlet.

12. The milk line system according to claim 11, wherein, The gas supply pipeline includes a first pipeline communicating with the milk supply pipeline and a second pipeline communicating with the milk outlet pipeline; The milk pipeline system further includes a switching valve for respectively controlling the on-off between the first pipeline and the milk supply pipeline and the on-off between the second pipeline and the milk outlet pipeline.

13. The milk line system according to claim 12, characterized in that, The switching valve includes two first regulating valves respectively arranged on the first pipeline and the second pipeline.

14. The milk line system according to claim 12, characterized in that, The gas supply pipeline further includes a third pipeline connecting the first pipeline and the second pipeline; The switching valve is a second multi-way valve arranged at the connection of the first pipeline, the second pipeline and the third pipeline.

15. The milk line system according to claim 13 or 14, characterized in that, The switching valve further includes a pulse solenoid valve arranged on the first pipeline.

16. The milk line system according to claim 12, wherein The first pipeline and the second pipeline are independently arranged and are respectively provided with at least one gas inlet; or, The gas supply pipeline further includes a third pipeline connecting the first pipeline and the second pipeline, and the third pipeline is provided with at least one gas inlet.

17. The milk line system according to claim 11, characterized in that, The milk pipeline system further includes a second regulating valve arranged at the connection of the milk supply pipeline and the milk outlet pipeline to realize the on-off switching between the milk supply pipeline and the milk outlet pipeline through the second regulating valve.

18. A milk-producing beverage machine, characterized in that, Including the milk pipeline system according to any one of claims 1 to 17.

19. A control method for a milk path system, characterized in that, The milk pipeline system includes a milk tank and a pipeline assembly. The pipeline assembly includes a milk supply pipeline, a milk outlet pipeline and a gas supply pipeline. One ends of the milk supply pipeline and the milk outlet pipeline are connectable in an on-off manner. The other end of the milk supply pipeline is communicatively connected to the milk tank, and the other end of the milk outlet pipeline forms a milk liquid outlet; the gas supply pipeline is used for accessing external gas; The control method of the milk pipeline system includes: After the preparation of the milk beverage is completed, disconnect the milk supply pipeline and the milk outlet pipeline and then perform an emptying operation; Among them, the emptying operation includes: Turn on the gas supply pipeline and the milk supply pipeline; and / or, Turn on the gas supply pipeline and the milk outlet pipeline.

20. The control method of the milking line system according to claim 19, characterized in that, The gas supply pipeline includes a first pipeline and a second pipeline. The first pipeline communicates with the milk supply pipeline, and the second pipeline communicates with the milk outlet pipeline.

21. The control method of the milk path system according to claim 20, characterized in that, The milk pipeline system further includes a switching valve for respectively controlling the on-off between the first pipeline and the milk supply pipeline and the on-off between the second pipeline and the milk outlet pipeline.

22. The control method of the milking line system according to claim 19, characterized in that, The process of preparing the milk beverage includes a milk foam preparation operation. The milk foam preparation operation includes: Turn on the milk supply pipeline and the milk outlet pipeline; Turn on the gas supply pipeline and the milk supply pipeline, and control the gas supply pipeline to intermittently supply gas to the milk supply pipeline.

23. The control method of the milk line system according to claim 22, characterized in that, After confirming that the preparation of the milk beverage is completed and disconnecting the milk supply pipeline and the milk outlet pipeline, turn on the gas supply pipeline and the milk outlet pipeline.

24. The control method of the milk path system according to claim 19, characterized in that, The milk path system further includes a liquid storage tank, an inner part of the liquid storage tank forms a liquid storage cavity for storing a cleaning liquid, the pipeline assembly further includes a liquid supply pipeline, one end of the liquid supply pipeline is connected to the liquid storage cavity in a communicating manner, and the other end is connected to the milk supply pipeline and / or the milk outlet pipeline in a switchable manner; The milk path system control method further includes: After the preparation of the milk beverage is completed, a cleaning operation is performed; Wherein, the cleaning operation includes: Connecting the liquid supply pipeline and the milk supply pipeline; and / or, Connecting the liquid supply pipeline and the milk outlet pipeline.

25. The control method of the milk path system according to claim 24, characterized in that, The cleaning operation is performed before or after the emptying operation.

26. The control method of the milk path system according to claim 25, characterized in that, After confirming the end of the cleaning operation, the milk path system control method further includes: Connecting the milk supply pipeline and the milk outlet pipeline; Connecting the gas transmission pipeline and the milk supply pipeline, so that the gas introduced into the gas transmission pipeline flows through the milk supply pipeline to the milk outlet pipeline.

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