Milk foam making system of coffee machine

Abstract

The utility model relates to the technical field of milk foam making, in particular to a milk foam making system of a coffee machine, which comprises a steam generating mechanism and a milk foam making mechanism, the steam generating mechanism comprises a water tank, a water pump and a boiler, the milk foam making mechanism comprises an emulsifier, a milk tank is arranged on one side of the emulsifier, and a milk foam outlet is formed in the other side of the emulsifier. An air inlet and a milk box connecting pipe are arranged on the emulsifier, and the end of the milk box connecting pipe is inserted into the milk box; through the arrangement of the valve mechanism and the blowout prevention mechanism, steam and air can be in contact with cow milk in the initial starting stage of the emulsifier in the use process, the steam splashing phenomenon is reduced, meanwhile, the arrangement of a pump body is reduced, the operation process is simplified, disassembly is more convenient, and use and cleaning are more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of milk froth making, and in particular relates to a milk froth making system of a coffee machine. Background Art

[0002] People applied electronic technology to coffee machines, realizing automatic control of the entire process of brewing coffee, including grinding, filling, pressing, brewing, and removing residues, thus creating coffee machines. With the development of the times, coffee machines have more and more functions. By equipping the coffee machine with an emulsifier, the machine can draw milk from the milk tank when steam is filled into the interior, thereby producing milk foam.

[0003] In the Chinese patent publication number CN116649785A, a milk frothing system for a coffee machine is mentioned. In the initial stage of emulsifying milk, water or milk is first filled into the milk pipe between the milk tank and the milk froth generator to eliminate the air in the milk pipe, and then steam is delivered to the milk froth generator. Once the steam enters the milk froth generator, it encounters milk or water instead of air, thereby avoiding the generation of a large steam pressure in the emulsification area at the initial stage of steam injection, shortening the existence time of the steam pressure, thereby avoiding milk splashing or reducing the amount and intensity of milk splashing. Subsequently, the milk froth generator draws the milk in the milk tank through the milk pipe and emulsifies the drawn milk into milk foam, thereby improving the user experience, avoiding the risk of scalding, and keeping the coffee machine casing clean. However, during use, the above solution still requires the additional configuration of a separate pump body, making its overall structure more complicated, the operation cumbersome, and its use subject to certain limitations. Utility Model Content

[0004] The purpose of the present invention is to provide a milk frothing system for a coffee machine to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] The milk frothing system of the coffee machine comprises:

[0007] A steam generating mechanism, comprising a water tank, a water pump and a boiler;

[0008] A milk frothing mechanism, comprising an emulsifier, a milk tank being provided on one side of the emulsifier, an air inlet and a milk tank access tube being provided on the emulsifier, the end of the milk tank access tube being inserted into the interior of the milk tank;

[0009] A valve mechanism, the valve mechanism comprising two two-position three-way solenoid valves, one of the two-position three-way solenoid valves being connected to a connecting pipe via a pipeline, one end of the connecting pipe extending into the interior of the milk box and provided with a switching valve at the end;

[0010] The anti-spray mechanism is arranged between the milk box access pipe and the switching valve, and is used to transport the internal milk to the inside of the milk box access pipe in advance.

[0011] Preferably, the water tank is connected to the water pump through a pipeline, and a flow meter is provided on the pipeline between the water tank and the water pump.

[0012] Preferably, the water pump is connected to the boiler through a pipeline, and a shock-absorbing safety valve is provided on the pipeline between the water pump and the boiler.

[0013] Preferably, the boiler is connected to two pipes via a No. 1 three-way interface, wherein a coffee brewing component is provided at one end of the pipe and a No. 2 three-way interface is provided at the other end of the pipe.

[0014] Preferably, the No. 2 three-way interface is connected to two pipes, and the two two-position three-way solenoid valves are respectively arranged on the two pipes, wherein the two interfaces of one of the two-position three-way solenoid valves are respectively provided with a hot water pipe and a pressure relief pipe, and the two interfaces of the other two-position three-way solenoid valve are respectively connected to the emulsifier and the connecting pipe through pipes.

[0015] Preferably, the blowout prevention mechanism includes a reserved pipe, the top and bottom ends of the reserved pipe are provided with connectors, both of the connectors are threadedly connected to the reserved pipe, and the two connectors are respectively threadedly connected to the milk box access pipe and the switching valve.

[0016] Preferably, a limiting ring is provided in the middle of the interior of the connecting piece, a sliding ring is slidably installed inside the reserved tube, and a limiting flap is rotatably installed on the top of the sliding ring.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] By setting up the valve mechanism and the anti-blowout mechanism, during the use of the emulsifier, steam and air will contact the milk at the initial startup stage, reducing the occurrence of steam splashing. At the same time, the setting of the pump body is reduced, the operation process is simplified, the disassembly is more convenient, and it is more convenient to use and clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a diagram of the milk circuit system of the present utility model;

[0020] Figure 2 It is a partial schematic diagram of the blowout prevention mechanism of the utility model;

[0021] Figure 3 This is a schematic diagram of the interior of the blowout prevention mechanism of the present utility model;

[0022] Figure 4 This is an exploded view of the blowout prevention mechanism of the utility model;

[0023] In the figure: 1. Water tank; 2. Flow meter; 3. Shock-absorbing safety valve; 4. Boiler; 5. Emulsifier; 6. Milk tank; 7. Air inlet; 8. Milk tank access pipe; 9. Two-position three-way solenoid valve; 10. Connecting pipe; 11. Limit flap; 12. Water pump; 13. No. 1 three-way interface; 14. Coffee brewing component; 15. No. 2 three-way interface; 16. Hot water pipe; 17. Pressure relief pipe; 18. Switching valve; 19. Reserved pipe; 20. Connector; 21. Limit ring; 22. Sliding ring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Example:

[0026] See also Figure 1-Figure 4 As shown, the milk foam making system of the coffee machine includes:

[0027] Steam generating mechanism, the steam generating mechanism includes a water tank 1, a water pump 12 and a boiler 4;

[0028] The milk frothing mechanism includes an emulsifier 5, a milk tank 6 is provided on one side of the emulsifier 5, an air inlet 7 and a milk tank access pipe 8 are provided on the emulsifier 5, and the end of the milk tank access pipe 8 is inserted into the interior of the milk tank 6;

[0029] The valve mechanism includes two two-position three-way solenoid valves 9, one of which is connected to a connecting pipe 10 through a pipeline. One end of the connecting pipe 10 extends to the interior of the milk box 6 and is provided with a switching valve 18 at the end;

[0030] The anti-spray mechanism is provided between the milk box access pipe 8 and the switching valve 18 and is used to transport the internal milk to the interior of the milk box access pipe 8 in advance.

[0031] Depend on Figure 1-Figure 4It can be seen that the water tank 1 is connected to the water pump 12 through a pipeline, a flow meter 2 is provided on the pipeline between the water tank 1 and the water pump 12, the water pump 12 is connected to the boiler 4 through a pipeline, a shock-absorbing safety valve 3 is provided on the pipeline between the water pump 12 and the boiler 4, the boiler 4 is connected to two pipelines through a No. 1 three-way interface 13, one end of the pipeline is provided with a coffee brewing component 14, and the other end of the pipeline is provided with a No. 2 three-way interface 15, the No. 2 three-way interface 15 is connected to two pipelines, two two-position three-way solenoid valves 9 are respectively provided on the two pipelines, one of the two-position three-way solenoid valves 9 has two interfaces respectively provided with a hot water pipeline 16 and a pressure relief pipeline 17, and the other two interfaces of the two-position three-way solenoid valve 9 are respectively connected to the emulsifier 5 and the connecting pipe 10 through pipelines;

[0032] The blowout prevention mechanism includes a reserved pipe 19, and a connecting piece 20 is provided at the top and bottom ends of the reserved pipe 19. The two connecting pieces 20 are both threadedly connected to the reserved pipe 19, and the two connecting pieces 20 are respectively threadedly connected to the milk box access pipe 8 and the switching valve 18. A limit ring 21 is provided in the middle of the inner part of the connecting piece 20, and a sliding ring 22 is slidably installed inside the reserved pipe 19. The top of the sliding ring 22 is rotatably installed with a limit flap 11.

[0033] As can be seen from the above, during use, the water pump 12 is started, and the water pump 12 pumps water from the inside of the water tank 1 and pumps the water into the inside of the boiler 4. The boiler 4 heats the water inside to generate steam. During the process of making milk foam, the two-position three-way solenoid valve 9 is controlled to pass steam into the emulsifier 5, generating negative pressure, which generates suction on the milk in the reserved tube 19, causing the sliding ring 22 to move upward a distance, and then the limit flap 11 opens. The steam brings the air entering from the air inlet 7 and the milk sucked in by the milk tank access pipe 8 into the emulsifier 5, causing milk foam to be generated.

[0034] After the milk foam is made, the limiting flap 11 returns to its original position, covering the hollow space of the sliding ring 22. The sliding ring 22 slides down, leaving part of the milk inside the reserved tube 19, thereby reducing the time of steam splashing.

[0035] By rotating the connecting piece 20, the reserved tube 19 can be removed and the internal sliding ring 22 can be taken out for easy cleaning.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A milk frothing system for a coffee machine, characterized in that: include: A steam generating mechanism, the steam generating mechanism comprising a water tank (1), a water pump (12) and a boiler (4); A milk frothing mechanism, comprising an emulsifier (5), a milk box (6) being provided on one side of the emulsifier (5), an air inlet (7) and a milk box access pipe (8) being provided on the emulsifier (5), and an end of the milk box access pipe (8) being inserted into the interior of the milk box (6); A valve mechanism, the valve mechanism comprising two two-position three-way solenoid valves (9), one of the two-position three-way solenoid valves (9) being connected to a connecting pipe (10) via a pipeline, one end of the connecting pipe (10) extending to the interior of the milk box (6) and provided with a switching valve (18) at the end; The anti-spray mechanism is arranged between the milk box access pipe (8) and the switching valve (18) and is used to transport the internal milk to the inside of the milk box access pipe (8) in advance.

2. The milk frothing system for a coffee machine according to claim 1, characterized in that: The water tank (1) is connected to a water pump (12) via a pipeline, and a flow meter (2) is provided on the pipeline between the water tank (1) and the water pump (12).

3. The milk frothing system for a coffee machine according to claim 1, characterized in that: The water pump (12) is connected to the boiler (4) through a pipeline, and a shock-absorbing safety valve (3) is provided on the pipeline between the water pump (12) and the boiler (4).

4. The milk frothing system for a coffee machine according to claim 1, wherein: The boiler (4) is connected to two pipes via a No. 1 three-way interface (13), wherein a coffee brewing component (14) is provided at one end of the pipe, and a No. 2 three-way interface (15) is provided at the other end of the pipe.

5. The milk frothing system for a coffee machine according to claim 4, characterized in that: The No. 2 three-way interface (15) is connected to two pipelines, and the two two-position three-way solenoid valves (9) are respectively arranged on the two pipelines, wherein the two interfaces of one of the two-position three-way solenoid valves (9) are respectively provided with a hot water pipeline (16) and a pressure relief pipeline (17), and the two interfaces of the other two-position three-way solenoid valve (9) are respectively connected to the emulsifier (5) and the connecting pipe (10) through pipelines.

6. The milk frothing system for a coffee machine according to claim 1, characterized in that: The anti-blowout mechanism comprises a reserved pipe (19), the top and bottom ends of the reserved pipe (19) are both provided with connecting pieces (20), the two connecting pieces (20) are both threadedly connected to the reserved pipe (19), and the two connecting pieces (20) are respectively threadedly connected to the milk box access pipe (8) and the switching valve (18).

7. The milk frothing system for a coffee machine according to claim 6, characterized in that: A limiting ring (21) is provided in the middle of the interior of the connecting member (20), a sliding ring (22) is slidably installed inside the reserved tube (19), and a limiting flap (11) is rotatably installed on the top of the sliding ring (22).

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