Double-milk-tank foaming system for coffee machine

Abstract

The utility model discloses a double-milk-tank foaming system for a coffee machine. The double-milk-tank foaming system comprises a milk box, wherein the interior of the milk box is divided into two independent milk bins; the box cover covers the opening in the top of the milk box, and the interior of the box cover is hollow to form a containing cavity; the mixing pipe is mounted in the accommodating cavity, and the mixing pipe is connected with a steam pipe which is connected with a steam generator; a discharge pipe and a milk inlet pipe are connected; the mixing pipe is hollow, a steam nozzle is installed in the hollow portion of the mixing pipe, and the air inlet end of the steam nozzle is communicated with the steam pipe. The double-milk-tank foaming system has the advantages that the double-milk-tank foaming system comprises the two independent milk bins, so that a user is allowed to load two different types of milk at the same time, such as whole milk and skim milk, or plant-based milk substitutes such as soymilk and almond milk. By means of the design, the flexibility and practicability of the coffee machine are remarkably improved, and a user can rapidly switch different kinds of milk according to personal taste or specific beverage requirements.

Description

Technical Field

[0001] The utility model relates to a coffee machine, in particular to a fully automatic coffee machine, a semi-automatic coffee machine or a double milk tank frothing system used in an Italian coffee machine. Background Art

[0002] In modern catering and home environments, coffee machines and milk frothers have become common equipment for preparing various coffee drinks. These drinks usually require the addition of milk or milk foam to improve the flavor and taste. Currently, most milk frothers on the market are designed as a single milk container system, which limits users to use different types of milk to make coffee.

[0003] Traditional milk frothers usually include a milk tank that can only be filled with one type of milk. When users want to try different flavors or use different types of milk such as whole milk, skim milk, soy milk, etc., they must clean the milk tank to change the milk, which not only increases the complexity of use but also reduces the efficiency of operation. In addition, this design cannot quickly respond to the diverse needs of customers in commercial environments such as coffee shops, affecting service efficiency and customer satisfaction.

[0004] Although some products have appeared on the market to try to solve this problem by adding multiple milk tanks, these products are often bulky and not suitable for use in environments with limited space. At the same time, the cost of these systems is relatively high, and there are still operational inconveniences in switching and cleaning the milk tanks.

[0005] In addition, in the prior art, there is still the problem of milk foam quality control. Since the quality of milk foam is affected by many factors such as milk type, temperature and steam pressure, it is difficult for the existing single milk tank system to achieve the optimal foaming process for different types of milk. For example, whole milk and skim milk require different processing methods during the foaming process to achieve ideal foam quality and taste, so it is necessary to make further improvements. Utility Model Content

[0006] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a double milk tank frothing system for a coffee machine which is simple in structure and easy to use and can allow the user to easily switch between different types of milk through a built-in double milk tank and an efficient milk frothing control mechanism without increasing the volume of the device.

[0007] The purpose of the utility model is achieved in the following manner: a double milk tank frothing system for a coffee machine, comprising a milk box: the interior of the milk box is divided into two independent milk bins, and corresponding types of milk are added to the milk bins respectively;

[0008] Box cover: The box cover covers the opening on the top of the milk box, and the interior of the box cover is hollow to form a containing cavity;

[0009] Mixing tube: The mixing tube is installed in the accommodating chamber, and the mixing tube is connected to the steam generator through a steam pipe; it is connected to a discharge pipe and a milk inlet pipe; the mixing tube is hollow inside, and a steam nozzle is installed in the hollow part, the air inlet end of the steam nozzle is connected to the steam pipe, and the outlet end of the steam nozzle is provided with a steam nozzle, which is arranged toward the mixing nozzle, and a conical negative pressure port is arranged on the side of the mixing nozzle facing the steam nozzle, and the farther the negative pressure port is from the steam nozzle, the smaller its diameter is, and the steam nozzle is connected to the discharge pipe; the milk inlet pipe is arranged between the steam nozzle and the mixing nozzle;

[0010] Three-way valve: The three-way valve is connected to the milk inlet pipe. Two milk suction pipes are arranged at the feeding end of the three-way valve and extend into the milk bin. The corresponding milk suction pipes are connected to the milk inlet pipe by switching the three-way valve.

[0011] Furthermore: the three-way valve includes a valve body, a valve core is rotatably installed in the valve body, a guide groove is arranged on the valve core, a first feed groove and a second feed groove are arranged on the valve body, which are respectively connected to the milk suction pipe, and a discharge groove is also arranged on the valve body to be connected to the milk inlet pipe; the valve body is rotated to connect the first feed groove or the second guide groove with the discharge groove through the guide groove.

[0012] Furthermore, the valve core is connected to a valve stem, which extends out of the box cover and is connected to a handle. The valve core can be driven to rotate by rotating the handle to achieve switching of the milk source.

[0013] Furthermore: a butt joint is provided at one end of the steam pipe, and the steam pipe is detachably inserted into the outer end of the mixing pipe through the butt joint.

[0014] Furthermore: a first sealing ring is arranged between the butt joint pipe and the mixing pipe.

[0015] Furthermore: a connecting pipe is provided at one end of the discharge pipe, and the discharge pipe is detachably inserted into the inner end of the mixing pipe through the connecting pipe.

[0016] Furthermore: a second sealing ring is arranged between the connecting pipe and the mixing pipe, and an operating handle is also arranged on the discharge pipe. The operating handle is pulled to drive the discharge pipe to swing and adjust the direction of the discharge nozzle arranged on the discharge pipe.

[0017] The beneficial effects of the utility model are: 1. Simple structure, low production cost and improved market competitiveness.

[0018] The dual milk tank frothing system design includes two independent milk tanks, allowing users to load two different types of milk at the same time, such as whole milk and skim milk, or plant-based milk substitutes such as soy milk, almond milk, etc. This design significantly improves the flexibility and practicality of the coffee machine, allowing users to quickly switch between different types of milk according to personal taste or specific drink needs.

[0019] 3. With the built-in three-way valve and its innovative valve core design, users can simply rotate the handle to select different milk sources without having to manually change the milk box or clean it, thus saving time and reducing operational complexity. This is especially important in a busy commercial environment, as it can quickly respond to changing customer needs.

[0020] 4. The steam nozzle in the system is designed to precisely control the flow and pressure of the steam, so that negative pressure is generated when the steam is sprayed, sucking the milk and spraying it evenly into the milk to mix with it. At the same time, the design of the mixing nozzle and the structural optimization of the negative pressure port further improve the fineness and uniformity of the milk foam. This fine control not only improves the quality of the milk foam, but also makes the taste of the final drink richer and smoother.

[0021] 5. All the connecting parts in the utility model, such as the steam pipe and the discharge pipe, are designed to be detachable, making cleaning and maintenance easier. In addition, the first and second sealing rings of the butt pipe and the connecting pipe ensure the sealing of the connection and prevent liquid leakage, thereby maintaining the hygiene and service life of the equipment.

[0022] 6. The user's operational safety is taken into consideration in the design. For example, the setting of the handle not only facilitates the rotation of the control valve core, but also avoids direct contact between the user and possible high-temperature components, thus enhancing safety during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 , 2 This is the general assembly effect diagram of the utility model structure.

[0024] Figure 3 This is an assembly diagram of the milk box and milk cover in the utility model.

[0025] Figure 4 It is a cross-sectional view of the structure of the utility model.

[0026] Figure 5 This is a schematic diagram of the structure of the utility model after the milk box and the milk cover are hidden.

[0027] Figure 6 This is an assembly diagram of the mixing pipe, steam pipe and discharge pipe in the utility model.

[0028] Figure 7 It is a cross-sectional view of the mixing pipe, steam pipe and discharge pipe structure in the utility model. DETAILED DESCRIPTION

[0029] The utility model is further described in detail below with reference to the accompanying drawings. A double milk tank frothing system for a coffee machine: comprising:

[0030] Milk box 1: the interior of the milk box 1 is divided into two independent milk bins 11, and corresponding types of milk are added into the milk bins 11;

[0031] Box cover 2: The box cover 2 covers the opening at the top of the milk box 1, and the interior of the box cover 2 is hollow to form a receiving cavity 21;

[0032] Mixing tube 3: The mixing tube 3 is installed in the accommodating chamber 21, and the mixing tube 3 is connected to the steam pipe 4 and the steam generator; it is connected to the discharge pipe 5 and the milk inlet pipe 6; the mixing tube 3 is hollow inside, and a steam nozzle 8 is installed in the hollow part, the air inlet end of the steam nozzle 8 is connected to the steam pipe 4, and the outlet end of the steam nozzle 8 is provided with a steam nozzle 81, and the steam nozzle 81 is arranged toward the mixing nozzle 10, and the mixing nozzle 10 is provided with a conical negative pressure port 14 on the side facing the steam nozzle 8, and the farther the negative pressure port 14 is from the steam nozzle 8, the smaller its diameter is, and the steam nozzle 8, the mixing nozzle 10 and the discharge pipe 5 are connected; the milk inlet pipe 6 is arranged between the steam nozzle 8 and the mixing nozzle 10, and is connected to the negative pressure port 14;

[0033] Three-way valve 12: The three-way valve 12 is connected to the milk inlet pipe 6. Two milk suction pipes 13 are provided at the feeding end of the three-way valve 12 and extend into the milk bin 11. The corresponding milk suction pipes 13 are connected to the milk inlet pipe 6 by switching the three-way valve 12.

[0034] In one embodiment, the three-way valve 12 comprises a valve body 121, a valve core 122 is rotatably mounted in the valve body 121, a guide groove 123 is arranged on the valve core 122, a first feed groove 124 and a second feed groove 125 are arranged on the valve body 121, which are respectively communicated with the milk suction pipe 13, and a discharge groove 126 is also arranged on the valve body 121, which is communicated with the milk inlet pipe 6; the valve body 121 is rotated to communicate the first feed groove 124 or the second guide groove 123 with the discharge groove 126 through the guide groove 123.

[0035] In one embodiment, the valve core 122 is connected to a valve stem 127, which extends out of the box cover 2 and is connected to a handle 128. The valve core 122 can be driven to rotate by rotating the handle 128 to switch the milk source.

[0036] In one embodiment, a butt joint pipe 41 is disposed at one end of the steam pipe 4 , and the steam pipe 4 is detachably inserted into the outer end of the mixing pipe 3 through the butt joint pipe 41 .

[0037] In one embodiment, a first sealing ring 42 is provided between the butt joint pipe 41 and the mixing pipe 3 .

[0038] In one embodiment, a connecting pipe 51 is provided at one end of the discharge pipe 5 , and the discharge pipe 5 is detachably inserted into the inner end of the mixing pipe 3 through the connecting pipe 51 .

[0039] In one embodiment, a second sealing ring 52 is provided between the connecting tube 51 and the mixing tube 3 , and an operating handle 53 is provided on the discharge tube 5 . The operating handle 53 is pulled to drive the discharge tube 5 to swing and adjust the direction of the discharge nozzle 54 provided on the discharge tube 5 .

[0040] How it works: The system design includes a milk tank 1, which is cleverly divided into two separate milk compartments 11. This design allows users to fill the two milk compartments with different types of milk, such as whole milk and skim milk, or plant-based milk alternatives such as soy milk or almond milk. This design provides significant variety and flexibility, and users can easily switch milk types according to personal preferences or specific drink needs.

[0041] The box cover 2 covers the opening at the top of the milk box 1, and its interior is hollow to form a receiving chamber 21. This receiving chamber not only protects the internal structure, but also provides space for installing other mechanical components such as the mixing tube 3, thereby increasing the overall compactness and safety of the device.

[0042] The mixing tube 3 is installed in the accommodating chamber 21 and connected to the steam generator through the steam pipe 4. The mixing tube is equipped with a steam nozzle 8, which is a key component of the system. When the steam is sprayed, negative pressure is generated according to the Venturi effect, the milk is sucked in, and the milk is evenly sprayed into the milk to produce milk foam. The design of the steam nozzle 8 allows the steam to reach the optimal temperature and pressure when it is sprayed, thereby optimizing the quality and fineness of the milk foam.

[0043] The three-way valve 12 is another innovative design, which is located on the milk inlet pipe 6. It allows the user to select different milk sources by simply rotating the external handle 128 through its internal rotating valve core 122. This design not only improves the efficiency and convenience of operation, but also significantly improves the user experience of the entire system by reducing the time and labor intensity required for milk replacement.

[0044] The design of the discharge pipe 5 also takes into account convenient maintenance and high standards of hygiene. The discharge pipe is inserted into the inner end of the mixing pipe 3 through the connecting pipe 51, and the second sealing ring 52 ensures the sealing of the connection to prevent liquid leakage and maintain the hygiene of the equipment. In addition, the operating handle 53 provided on the discharge pipe allows the user to easily adjust the direction of the discharge nozzle 54, further improving the convenience of operation.

[0045] The outlet end of the steam nozzle 8 is provided with a steam nozzle 81, which is arranged toward the mixing nozzle 10 to ensure that the steam can be directly and efficiently mixed with the milk. The mixing nozzle 10 is designed to have a negative pressure port 14. Its unique conical design allows the steam ejected from the steam nozzle 8 to form the necessary negative pressure when passing through the mixing nozzle. This negative pressure effect helps the milk to be evenly and quickly sucked into different milk chambers and mixed with the steam, producing delicate and uniform milk foam. This process not only optimizes the generation of milk foam, but also ensures that consistent drink quality can be obtained every time it is used.

[0046] One end of the steam pipe 4 is inserted into the outer end of the mixing pipe 3 through the butt joint 41. This detachable design makes the entire system more convenient when it needs to be repaired or cleaned. The first sealing ring 42 is located between the butt joint 41 and the mixing pipe 3, providing additional sealing protection, ensuring that the pressure and temperature of the steam remain stable during the operation of the system, and avoiding potential steam leakage, which is crucial to maintaining the safety of operation.

[0047] Compared with traditional technology, the double milk tank foaming system for the coffee machine in this case has achieved the following technical effects:

[0048] 1. Flexibility of multiple milk options: The double milk tank design allows users to choose different types of milk according to their needs, meeting the needs of personalized drink making and greatly improving the user experience.

[0049] 2. Quick switching and easy operation: Through the three-way valve and external handle, users can quickly switch between different milk sources. It is easy to operate and adapt to the fast-paced business environment.

[0050] 3. Optimized milk foam quality: Precisely controlled steam injection and negative pressure mixing technology ensure the quality of milk foam, providing customers with a richer and smoother taste. At the same time, using the principle of negative pressure adsorption, milk can be sucked in without additional power and evenly mixed with steam to form milk foam.

[0051] 4. Convenience of maintenance and hygiene: The detachable pipe design and efficient sealing system reduce the difficulty of maintenance while maintaining high standards of hygiene of the equipment.

[0052] 5. Compact and safe design: The overall design takes into account space efficiency and operational safety, allowing the equipment to operate safely and efficiently even in space-constrained environments.

[0053] Through these design considerations, the double milk tank frothing system for the coffee machine not only provides functions beyond traditional milk frothers, but also sets new standards in terms of operational efficiency, safety and user convenience, making it an ideal choice for the pace of modern life and can be widely promoted and used.

[0054] In summary, through the above comprehensive technical features, the double milk tank frothing system for coffee machines not only optimizes the operation process of traditional milk frothers, but also significantly improves the overall user experience and market competitiveness through its versatility, high efficiency and user-friendly design. This system is suitable for coffee shops, restaurants and families of all sizes, and can meet the needs of modern consumers for high-quality coffee drinks. In addition, by providing continuous technical support and upgrades, the system can maintain its technological advantages and continue to meet the changing needs of the market.

[0055] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A double milk tank frothing system for a coffee machine, characterized in that: These include, Milk box (1): the interior of the milk box (1) is divided into two independent milk bins (11), and corresponding types of milk are added to the milk bins (11); Box cover (2): the box cover (2) covers the opening at the top of the milk box (1), and the interior of the box cover (2) is hollow to form a receiving cavity (21); Mixing tube (3): The mixing tube (3) is installed in the accommodating chamber (21), and the mixing tube (3) is connected to a steam pipe (4) and a steam generator; and is connected to a discharge pipe (5) and a milk inlet pipe (6); the mixing tube (3) is hollow inside, and a steam nozzle (8) is installed in the hollow part thereof; the air inlet end of the steam nozzle (8) is communicated with the steam pipe (4); the outlet end of the steam nozzle (8) is provided with a steam nozzle (81), and the steam nozzle (81) is arranged toward the mixing nozzle (10); a conical negative pressure port (14) is arranged on the side of the mixing nozzle (10) facing the steam nozzle (8); the farther the negative pressure port (14) is from the steam nozzle (8), the smaller its diameter is; the steam nozzle (8), the mixing nozzle (10) and the discharge pipe (5) are communicated; and the milk inlet pipe (6) is arranged between the steam nozzle (8) and the mixing nozzle (10), and is communicated with the negative pressure port (14); Three-way valve (12): the three-way valve (12) is connected to the milk inlet pipe (6). Two milk suction pipes (13) are provided at the inlet end of the three-way valve (12) and extend into the milk bin (11). The corresponding milk suction pipes (13) are connected to the milk inlet pipe (6) by switching the three-way valve (12).

2. The double milk tank frothing system for a coffee machine according to claim 1, characterized in that: The three-way valve (12) comprises a valve body (121), a valve core (122) is rotatably mounted in the valve body (121), a guide groove (123) is provided on the valve core (122), a first feed groove (124) and a second feed groove (125) are provided on the valve body (121), which are respectively connected to the milk suction pipe (13), and a discharge groove (126) is also provided on the valve body (121), which is connected to the milk supply pipe (6); the valve body (121) is rotated to connect the first feed groove (124) or the second feed groove (123) to the discharge groove (126) through the guide groove (123).

3. The double milk tank frothing system for a coffee machine according to claim 2, characterized in that: The valve core (122) is connected to a valve stem (127), and the valve stem (127) extends out of the box cover (2) and is connected to a handle (128). The valve core (122) can be driven to rotate by rotating the handle (128), thereby switching the milk source.

4. The double milk tank frothing system for a coffee machine according to claim 1, characterized in that: One end of the steam pipe (4) is provided with a butt joint pipe (41), and the steam pipe (4) is detachably inserted into the outer end of the mixing pipe (3) via the butt joint pipe (41).

5. The double milk tank frothing system for a coffee machine according to claim 4, characterized in that: A first sealing ring (42) is provided between the butt-jointing tube (41) and the mixing tube (3).

6. The double milk tank frothing system for a coffee machine according to claim 1, characterized in that: One end of the discharge pipe (5) is provided with a connecting pipe (51), and the discharge pipe (5) is detachably inserted into the inner end of the mixing pipe (3) via the connecting pipe (51).

7. The double milk tank frothing system for a coffee machine according to claim 6, characterized in that: A second sealing ring (52) is provided between the connecting pipe (51) and the mixing pipe (3), and an operating handle (53) is also provided on the discharge pipe (5). The operating handle (53) is turned to drive the discharge pipe (5) to swing and adjust the direction of the discharge nozzle (54) provided on the discharge pipe (5).

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