A coffee machine milk channel cleaning system

Abstract

The present application relates to the technical field of coffee machine structure, and discloses a coffee machine milk path cleaning system, which comprises a water path system, a milk path system and a coffee brewing assembly.The water path system comprises a water tank, a water pump, a boiler and the coffee brewing assembly.The water in the water tank is pumped out by the water pump, heated in the boiler and then transmitted to the coffee brewing assembly.The milk path system comprises a milk tank, an emulsifier and an automatic switching valve.The automatic switching valve is arranged in the milk tank.When high-pressure gas is introduced into the automatic switching valve, the inner valve body is first pushed to make the milk inlet inserted into the closed cavity and closed by the closed plug, and then the sealing cover is opened to make the gas pass through the hollow valve core and be sprayed from the inclined gas hole, so that the milk path is cleaned, the residual milk in the automatic switching valve is reduced, and the long-term use of the automatic switching valve is ensured.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of coffee machine structure, and particularly relates to a milk path cleaning system of a coffee machine. BACKGROUND

[0002] With the development of the times, the coffee machine has more and more functions, and in order to enrich the taste, many are connected with a milk foam generating system, which has the function of making fresh milk foam, but because milk is easy to deteriorate and dry and block the pipeline, the milk delivery pipeline and the milk residue in the milk foam generator need to be cleaned in time, so people will externally connect a milk path cleaning system for cleaning the pipeline and the milk foam generator.

[0003] In the Chinese patent with the publication number CN116649786A, a milk path cleaning system of a coffee machine is mentioned, which is configured with a switching valve including a first liquid inlet, a second liquid inlet and a liquid outlet, the first liquid inlet is used to input pressure water, the second liquid inlet is used to suck milk from a milk tank, and the liquid outlet is connected with an emulsifier; the switching valve is configured to make the first liquid inlet and the second liquid inlet communicate with the liquid outlet alternately to flow out pressure water or milk from the liquid outlet, the second liquid inlet and the liquid outlet are always communicated, and the emulsifier sucks milk from the milk tank, when pressure water is delivered to the first liquid inlet, the switching valve is switched to make the first liquid inlet communicate with the liquid outlet to clean the liquid outlet, the pipeline after the liquid outlet and the emulsifier;

[0004] However, the above structure needs gas to enter the flow-through gap from the radial hole, so that when there is no gas connection, the milk is easy to flow into the flow-through gap from the radial hole, the flow direction of the gas flowing out of the radial hole is fixed, and the milk is easy to remain in the flow-through gap, and the long-term remaining of the milk will cause the piston seat to move slowly, which will cause the piston seat to flow through the gas path without being moved to the position of blocking the milk inlet, so that the steam directly enters the milk storage tank, and the steam with the milk enters the milk foam generator, which affects the normal cleaning of the milk path, and the use is limited. SUMMARY

[0005] The purpose of the present application is to provide a milk path cleaning system of a coffee machine to solve the problems mentioned in the background.

[0006] To achieve the above purpose, the present application provides the following technical scheme:

[0007] A milk path cleaning system of a coffee machine, comprising:

[0008] A water path system, the water path system comprises a water tank, a water pump, a boiler and a coffee brewing assembly, water stored in the water tank is pumped out by the water pump, heated in the boiler, and then transmitted to the coffee brewing assembly;

[0009] The milk line system comprises a milk tank, an emulsifier and an automatic switching valve, the automatic switching valve is arranged in the inside of the milk tank, the automatic switching valve comprises an outer valve body, the top and bottom of the outer valve body are respectively provided with a gas inlet and a milk inlet, the outer surface of the outer valve body is provided with a mixing outlet, the automatic switching valve is used for automatically switching the communication between the mixing outlet and the gas inlet and the milk inlet, the top of the milk tank is communicated with a milk outlet pipe and a gas inlet pipe, the milk outlet pipe is used for communicating the emulsifier and the mixing outlet, the gas inlet pipe is used for communicating a boiler and the gas inlet, and the milk inlet is used for sucking cow milk from the inside of the milk tank.

[0010] The milk tank cleaning mechanism is arranged in the inside of the gas inlet pipe and is used for discharging steam to clean the milk tank.

[0011] The control mechanism comprises a shockproof safety valve, two tee joints and two tee two-position electromagnetic valves.

[0012] Preferably, the inside of the outer valve body is provided with a sliding cavity and an expansion cavity, the inside of the sliding cavity is slidably installed with an inner valve body, one side of the inner valve body is threadedly installed with an inner valve cover through a connecting column, the outer surface of the inner valve cover is equidistantly provided with a plurality of inclined gas holes, and one end of the inner valve cover extends to the inside of the expansion cavity.

[0013] Preferably, one side of the inner valve cover close to the milk inlet is provided with a closed cavity, the closed cavity is slidably installed with a closed plug, the inside of the closed cavity is provided with a first spring, the elastic force of the first spring acts on the closed plug to close the closed cavity, and the diameter of the milk inlet is matched with the diameter of the closed cavity.

[0014] Preferably, the inside of the inner valve body is slidably installed with a hollow valve core, one end of the hollow valve core is threadedly installed with a sealing cover, the other end of the hollow valve core extends to the inside of the closed cavity and is fixedly connected with the closed plug, and the other end of the hollow valve core is threadedly installed with a sealing cover.

[0015] Preferably, one end of the hollow valve core close to the sealing cover is provided with an air inlet hole, the outer surface of the connecting column is provided with an air outlet groove, the outer surface of the hollow valve core is provided with an air outlet hole, and the hollow valve core is communicated with the inner cavity of the inner valve cover through the air outlet hole and the air outlet groove.

[0016] Preferably, the shock relief safety valve is used for connecting the water pump and the boiler, and discharges the pressure between them through the pressure relief pipe, one of the three-way joints is used for connecting the boiler with the coffee brewing assembly, and the other three-way joint is used for connecting the hot water outlet and the emulsifier, one of the three-way two-position electromagnetic valves is used for switching the communication between the boiler and the hot water outlet and the pressure relief pipe, and the other three-way two-position electromagnetic valve is used for switching the communication between the boiler and the emulsifier and the air inlet pipe.

[0017] Preferably, the milk tank cleaning mechanism comprises an inner pipe slidingly arranged in the air inlet pipe, a plurality of air injection holes are arranged on the air inlet pipe and the inner pipe, a narrow opening is arranged in the inner portion of the air inlet pipe, a blocking plate is arranged in the inner portion of the inner pipe, the top end of the inner pipe extends to the outside of the air inlet pipe, and a third spring is arranged between the inner pipe and the air inlet pipe.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] (1) By arranging the automatic switching valve, when high-pressure gas is introduced into the automatic switching valve, the inner valve body is first pushed, the milk inlet is inserted into the closed cavity and is closed by the closing plug, then the sealing cover is opened, the gas passes through the hollow valve core, and is sprayed from the inclined air holes, the milk path is cleaned, the residual milk in the automatic switching valve is reduced, the long-term use of the automatic switching valve is ensured, even if the inner valve body is not moved to the position, the communication between the milk inlet and the steam interface will not occur, and the use is safer.

[0020] (2) By arranging the milk tank cleaning mechanism, when the milk tank is cleaned, the inner pipe is pressed, the air injection holes are connected, the narrow opening is closed by the blocking plate, the steam is sprayed from the air injection holes, the inner wall of the milk tank is treated, the milk tank is preliminarily cleaned to a certain extent, and the subsequent milk tank cleaning is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic view of the coffee machine involved in the present application;

[0022] Figure 2 It is a structural schematic view of the coffee machine involved in the present application;

[0023] Figure 3 It is a structural schematic view of the coffee machine involved in the present application;

[0024] Figure 4 It is an exploded view of the automatic switching valve of the present application;

[0025] Figure 5 It is a structural schematic view of the coffee machine involved in the present application;

[0026] In the figure: 1, water tank; 2, water pump; 3, boiler; 4, coffee brewing assembly; 5, milk tank; 6, emulsifier; 7, outer valve body; 8, air inlet; 9, milk inlet; 10, mixing outlet; 11, milk outlet pipe; 12, air inlet pipe; 13, shockproof safety valve; 14, tee joint; 15, three-way two-position electromagnetic valve; 16, sliding cavity; 17, expansion cavity; 18, inner valve body; 19, connecting column; 20, inner valve cover; 21, inclined air hole; 22, closed cavity; 23, closed plug; 24, No. 1 spring; 25, No. 2 spring; 26, hollow valve core; 27, sealing cover; 28, air inlet hole; 29, air outlet groove; 30, air outlet hole; 31, inner pipe; 32, air jet hole; 33, narrow opening; 34, blocking plate; 35, No. 3 spring. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0028] In addition, the terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited. In addition, the terms "mounting", "connecting" and "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] Embodiment one:

[0030] Please refer to Figures 1-5 As shown in the figure, a coffee machine milk cleaning system comprises:

[0031] The waterway system comprises a water tank 1, a water pump 2, a boiler 3 and a coffee brewing assembly 4. The water stored in the water tank 1 is pumped out by the water pump 2, heated in the boiler 3, and then transmitted to the coffee brewing assembly 4.

[0032] The milk circuit system includes a milk tank 5, an emulsifier 6, and an automatic switching valve. The automatic switching valve is located inside the milk tank 5 and includes an outer valve body 7. The top and bottom of the outer valve body 7 are respectively provided with an air inlet 8 and a milk inlet 9. The outer surface of the outer valve body 7 is provided with a mixing outlet 10. The automatic switching valve is used to automatically switch the connection between the mixing outlet 10 and the air inlet 8 and the milk inlet 9. The top of the milk tank 5 is connected to a milk outlet pipe 11 and an air inlet pipe 12. The milk outlet pipe 11 is used to connect the emulsifier 6 and the mixing outlet 10. The air inlet pipe 12 is used to connect the boiler 3 and the air inlet 8. The milk inlet 9 is used to draw milk from inside the milk tank 5.

[0033] The milk box cleaning mechanism is located inside the air inlet pipe 12 and is used to release steam to clean the milk box 5;

[0034] The control mechanism includes a shock-absorbing safety valve 13, two three-way connectors 14, and two three-way two-position solenoid valves 15.

[0035] Depend on Figure 2 It is known that the shock-absorbing safety valve 13 is used to connect the water pump 2 and the boiler 3, and to release the pressure between them through the pressure relief pipe. One of the three-way connectors 14 is used to connect the boiler 3 to the coffee brewing component 4 and another three-way connector 14. The other three-way connector 14 is used to connect the hot water outlet and the emulsifier 6. One of the three-way two-position solenoid valves 15 is used to switch the connection between the boiler 3 and the hot water outlet and the pressure relief pipe. The other three-way two-position solenoid valve 15 is used to switch the connection between the boiler 3 and the emulsifier 6 and the air inlet pipe 12.

[0036] As can be seen from the above, during use, the water pump 2 draws the water stored in the water tank 1 to the boiler 3, the flow meter measures the amount of water flow, the stored water is heated by the boiler 3 to form hot water and high-pressure steam, and the connection between the boiler 3 and the coffee brewing component 4, the hot water outlet, the emulsifier 6 and the automatic switching valve is switched by two three-way two-position solenoid valves 15.

[0037] When milk foam needs to be generated, the boiler 3 is connected to the emulsifier 6, and the boiler 3 is disconnected from the automatic switching valve. At the same time, the mixing outlet 10 on the automatic switching valve is connected to the milk inlet 9. At this time, the high-pressure steam generated by the boiler 3 will enter the emulsifier 6 and be ejected from the outlet, creating a negative pressure inside the milk outlet pipe 11. This causes the milk inlet 9 to draw milk from inside the milk tank 5 and be sucked into the milk outlet pipe 11 from the mixing outlet 10. Then, under the action of the emulsifier 6, milk foam is formed.

[0038] When it is necessary to clean the inside of the milk outlet pipe 11, disconnect the boiler 3 from the emulsifier 6 and connect the boiler 3 to the automatic switching valve. At this time, the high-pressure steam generated by the boiler 3 will enter the automatic switching valve, connecting the mixing outlet 10 to the air inlet 8. The high-pressure steam will enter the milk outlet pipe 11 through the air inlet 8 and the mixing outlet 10, and then be sprayed out from the outlet of the emulsifier 6 to complete the cleaning of the milk path.

[0039] Example 2:

[0040] refer to Figure 3 and Figure 4 As shown, the outer valve body 7 is provided with a sliding cavity 16 and an expansion cavity 17. The inner valve body 18 is slidably installed inside the sliding cavity 16. An inner valve cover 20 is threadedly installed on one side of the inner valve body 18 through a connecting post 19. Several oblique air holes 21 are equally spaced on the outer surface of the inner valve cover 20. One end of the inner valve cover 20 extends into the interior of the expansion cavity 17.

[0041] The inner valve cover 20 has a closed cavity 22 on the side near the milk inlet 9. A sealing plug 23 is slidably installed inside the closed cavity 22. A first spring 24 is installed inside the closed cavity 22. The elastic force of the first spring 24 acts on the sealing plug 23 to close the opening of the closed cavity 22. The diameter of the milk inlet 9 is matched with the diameter of the closed cavity 22. A second spring 25 is installed between the inner valve body 18 and the outer valve body 7. The elastic force of the second spring 25 acts on the inner valve body 18 to move the inner valve body 18 away from the milk inlet 9.

[0042] A hollow valve core 26 is slidably installed inside the inner valve body 18. A sealing cap 27 is threaded onto one end of the hollow valve core 26, and the other end of the hollow valve core 26 extends into the interior of the closed cavity 22 and is fixedly connected to the sealing plug 23. An air inlet 28 is provided at the end of the hollow valve core 26 near the sealing cap 27. An air outlet groove 29 is provided on the outer surface of the connecting column 19. An air outlet 30 is provided on the outer surface of the hollow valve core 26. The hollow valve core 26 is connected to the inner cavity of the inner valve cover 20 through the air outlet 30 and the air outlet groove 29.

[0043] As can be seen from the above, in the initial state, the second spring 25 pushes the inner valve body 18, causing the inner valve cover 20 on one side of the inner valve body 18 to move away from the milk inlet 9. The sealing cover 27 closes the air inlet 28, connecting the automatic switching valve with the milk tank 5. At this time, the mixing outlet 10 is connected to the milk inlet 9. When the emulsifier 6 is used, the milk inside the milk tank 5 will be drawn into the emulsifier 6 from the mixing outlet 10, thereby producing milk foam.

[0044] When the milk line system needs to be cleaned, high pressure gas enters the inside of the outer valve body 7 through the gas inlet 8, the first spring 24 pushes the closing plug 23, the hollow valve core 26 makes the sealing cover 27 close the gas inlet hole 28, the high pressure gas pushes the inner valve body 18, the inner valve body 18 drives the inner valve cover 20 to move at the same time, the inner valve cover 20 enters the inside of the expansion cavity 17, in the moving process, the milk inlet 9 is inserted into the closing cavity 22, the closing plug 23 blocks the milk inlet 9, at the same time, the closing plug 23 is pushed to the inside of the closing cavity 22, the closing plug 23 pushes the hollow valve core 26 and drives the sealing cover 27, the high pressure gas enters the inside of the hollow valve core 26 from the gas inlet hole 28, passes through the gas outlet groove 29 and the gas outlet hole 30 and enters the inside of the inner valve cover 20, the high pressure gas is sprayed into the inside of the expansion cavity 17 from the plurality of inclined gas holes 21 arranged on the periphery of the inner valve cover 20, at the same time, due to the inclination angle of the inclined gas holes 21, the airflow in the expansion cavity 17 rotates, at the same time, the high pressure gas is transported to the outlet of the emulsifier 6 by the mixing outlet 10 and the milk outlet pipe 11 and is sprayed out, so as to complete the cleaning of the milk line system.

[0045] Embodiment three:

[0046] Reference Figure 5 As shown in the figure, the milk tank cleaning mechanism comprises an inner pipe 31 slidingly installed in the inside of the gas inlet pipe 12, a plurality of gas injection holes 32 are arranged on the gas inlet pipe 12 and the inner pipe 31, a narrow opening 33 is arranged in the inside of the gas inlet pipe 12, a blocking plate 34 is arranged in the inside of the inner pipe 31, the top end of the inner pipe 31 extends to the outside of the gas inlet pipe 12, and the third spring 35 is arranged between the inner pipe 31 and the gas inlet pipe 12.

[0047] As can be seen from the above, in the initial state, the inner pipe 31 and the gas injection holes 32 on the gas inlet pipe 12 are staggered, so that the plurality of gas injection holes 32 are in a closed state, and the blocking plate 34 is located above the narrow opening 33, and after the milk tank 5 is completely used, the inner pipe 31 can also be pressed to move downward, so that each gas injection hole 32 is communicated, and at the same time, the blocking plate 34 moves downward to block the narrow opening 33, at this time, the high pressure steam introduced into the inside of the gas inlet pipe 12 is sprayed out from the gas injection hole 32 to impact the residues adhered to the inner wall of the milk tank 5, so that the milk tank 5 is conveniently cleaned.

[0048] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A coffee machine milkway cleaning system, characterized in that, The utility model relates to a coffee machine, including: Water system, the water system includes water tank (1), water pump (2), boiler (3) and coffee brewing assembly (4), the water storage in water tank (1) is pumped out by water pump (2) to the inside temperature heating of boiler (3) after heating, transmission to coffee brewing assembly (4) place; Milk system, the milk system includes milk tank (5), emulsifier (6) and automatic switching valve, the automatic switching valve is arranged in the inside of milk tank (5), the automatic switching valve includes outer valve body (7), the top and bottom of outer valve body (7) are provided with gas inlet (8) and milk inlet (9) respectively, the outer surface of outer valve body (7) is provided with mixing outlet (10), the automatic switching valve is used for automatically switching the communication between mixing outlet (10) and gas inlet (8) and milk inlet (9), the top of milk tank (5) is communicated with milk outlet pipe (11) and gas inlet pipe (12), milk outlet pipe (11) is used for communicating emulsifier (6) and mixing outlet (10), gas inlet pipe (12) is used for communicating boiler (3) with gas inlet (8), milk inlet (9) is used for sucking cow milk from the inside of milk tank (5); Milk tank cleaning mechanism, be provided with in the inside of gas inlet pipe (12), be used for leaking out steam to clean milk tank (5); Control mechanism, the control mechanism includes shockproof safety valve (13), two tee joints (14) and two tee two-position electromagnetic valves (15); The inside of outer valve body (7) is provided with sliding cavity (16) and extension cavity (17), the inside sliding installation of sliding cavity (16) has inner valve body (18), one side of inner valve body (18) is screw-mounted with inner valve cover (20) through connecting column (19), the outer surface of inner valve cover (20) is equidistantly provided with several oblique air holes (21), one end of inner valve cover (20) extends to the inside of extension cavity (17); The side of inner valve cover (20) close to milk inlet (9) is provided with closed cavity (22), the inside sliding installation of closed cavity (22) has closed plug (23), the inside of closed cavity (22) is provided with one spring (24), the elasticity of one spring (24) acts on closed plug (23) and makes closed plug (23) close the opening of closed cavity (22), the diameter width of milk inlet (9) is compatible with the diameter width of closed cavity (22); The inside of outer valve body (7) is provided with two spring (25) between inner valve body (18), the elasticity of two spring (25) acts on inner valve body (18) and makes inner valve body (18) away from milk inlet (9), the inside sliding installation of inner valve body (18) has hollow valve core (26), one end of hollow valve core (26) is screw-mounted with sealing cover (27), the other end of hollow valve core (26) extends to the inside of closed cavity (22) and is fixedly connected with closed plug (23); The hollow valve core (26) is provided with an air inlet hole (28) near one end of the sealing cover (27), the outer surface of the connecting column (19) is provided with an air outlet groove (29), the outer surface of the hollow valve core (26) is provided with an air outlet hole (30), and the hollow valve core (26) is communicated with the inner cavity of the inner valve cover (20) through the air outlet hole (30) and the air outlet groove (29); The shock relief safety valve (13) is used for connecting the water pump (2) and the boiler (3), and discharges the pressure between the water pump (2) and the boiler (3) through the pressure relief pipe, one three-way joint (14) is used for connecting the boiler (3), the coffee brewing assembly (4) and the other three-way joint (14), the other three-way joint (14) is used for connecting the hot water outlet and the emulsifier (6), one three-way two-position electromagnetic valve (15) is used for switching the communication between the boiler (3) and the hot water outlet and the pressure relief pipe, and the other three-way two-position electromagnetic valve (15) is used for switching the communication between the boiler (3) and the emulsifier (6) and the air inlet pipe (12).

2. A coffee machine milkway cleaning system according to claim 1, characterized in that: The milk tank cleaning mechanism comprises an inner pipe (31) slidingly installed in the air inlet pipe (12), a plurality of air injection holes (32) are formed in the air inlet pipe (12) and the inner pipe (31), a narrow opening (33) is arranged in the inner pipe (12), a blocking plate (34) is arranged in the inner pipe (31), the top end of the inner pipe (31) extends to the outside of the air inlet pipe (12), and a third spring (35) is arranged between the inner pipe (31) and the air inlet pipe (12).

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