Milk foam generating mechanism

Abstract

The utility model relates to a milk foam generating mechanism, and aims to solve the technical problems that an existing similar product is poor in internal venturi effect and milk foam effect and poor in structural design, so that the overall use and installation are inconvenient, and the stability after installation is poor. The mechanism is characterized in that a four-way mixing cavity is formed in a foaming seat of the mechanism, an inner hole which is sleeved with the four-way mixing cavity and communicated with the four-way mixing cavity is formed in the protruding position of one side between orifices at the two ends in an air inlet seat, and a protruding ring rib on one side of the outer diameter of the air inlet seat is fixedly and integrally connected with a buckling groove in the foaming seat; a venturi tube is arranged in a conical cavity at one end of a steam pipe joint in a four-way mixing cavity of the foaming seat, the outer diameter of a conical air inlet hole at one end of the venturi tube fixed in the foaming seat through the steam pipe joint corresponds to a conical cavity in the four-way mixing cavity of the foaming seat, and the other two orifices of the four-way mixing cavity in the foaming seat are respectively connected with a suction tube and a milk tube seat; and the through hole at the conical cavity aligned with the conical air inlet hole is communicated with the buffer cavity at one end of the milk tube seat.

Description

Technical Field

[0001] The utility model relates to a milk foaming device for beverage machines such as coffee machines, which is a milk foaming mechanism. Background Art

[0002] A milk frothing mechanism, also known as a milk frother, primarily refers to a device that produces milk foam through stirring or the Venturi effect, with the latter primarily involving Venturi tubes. Some existing coffee and beverage machines require milk frothing devices to enhance the taste of beverages. Fully automatic coffee machines, among others, automate the entire coffee brewing process, including preheating, cleaning, grinding, pressing, brewing, and dispensing. They brew coffee according to scientific data and procedures, and feature comprehensive protection systems. They are convenient to use, offering instant coffee at the touch of a button. Some existing fancy coffee machines are equipped with a milk frother on the side of the drain tray at the water outlet, such as the application number 202122833212.6 disclosed in the Chinese patent document, the authorization announcement date is 2022.02.01, and the utility model name is "A fancy coffee machine"; the specific structure of this type of milk frother or foamer, such as the application number 202320437949.2 disclosed in the Chinese patent document, the authorization announcement date is 2023.10.17, and the utility model name is "A milk foaming mechanism and milk foam coffee machine"; the production and assembly of the above-mentioned products and similar products are relatively complicated, the internal Venturi effect and milk foam effect are poor, and the overall structural design is poor, which makes the overall use and installation more inconvenient and the stability after installation is poor. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the present invention aims to provide a milk frothing mechanism in the art that addresses the technical problems of existing similar products, such as the complex production and assembly, poor internal Venturi effect and milk frothing quality, and poor overall structural design, resulting in inconvenient use and installation, and poor stability after installation. This objective is achieved through the following technical solution.

[0004] A milk frothing mechanism is provided. The top opening of a milk box of the mechanism is provided with a box cover. An upper cover is provided at the inner diameter of the box opening of the milk box below the box cover. The upper cover and the box cover are connected as one piece. A milk frothing device is provided in a top groove in the upper cover and is snap-fitted and fixed in the top groove of the upper cover. A knob and a turning knob of the milk frothing device are respectively provided on the outer diameter of one side of the connection between the milk box and the box cover. A protruding steam pipe joint is provided on the other side of the connection between the milk box and the box cover. A steam inlet channel in the milk frothing device at the steam pipe joint is communicated with a milk outlet channel. A milk outlet pipe is provided at the milk outlet channel of the milk frothing device at one side of the connection between the milk box and the box cover. A suction pipe is provided at the milk inlet channel of the milk frothing device. The suction pipe of the milk frothing device extends into the milk box through the upper cover. The key points of its structural design are that one end of the knob in the upper cover is fixedly connected with one end of the air intake rod, the other end of the air intake rod is inserted into the air intake cavity on one side of the foaming seat in the upper cover, the notch on one side of the air intake rod in the foaming seat is symmetrically inserted into the air intake cavity on the other side and is connected with the four-way mixing cavity on the other side of the air intake cavity of the foaming seat, a raised part on one side between the orifices at both ends of the air intake seat is provided with an inner hole that fits the four-way mixing cavity and is connected with the four-way mixing cavity, the raised ring rib on one side of the outer diameter of the air intake seat is fixedly connected with the buckle groove at the foaming seat; the foaming seat A venturi tube is provided in the tapered cavity at one end of the steam pipe joint in the four-way mixing chamber. The outer diameter of the tapered air inlet hole at one end of the venturi tube fixed in the foaming seat through the steam pipe joint corresponds to the tapered cavity in the four-way mixing chamber of the foaming seat. The other two openings of the four-way mixing chamber in the foaming seat are respectively connected to the straw and the milk tube seat. The through hole in the tapered cavity aligned with the tapered air inlet hole is communicated with the buffer cavity at one end of the milk tube seat. One end of the rotating button in the upper cover is fixedly connected to the raised buckle at the other end of the milk tube seat. The channel in the milk tube seat is L-shaped, and a sealing ring is provided at the connection of the above corresponding components.

[0005] An integrally formed side spring is installed on the outer diameter of the Venturi tube on the side of the foaming seat where the air inlet chamber and the four-way mixing chamber are integrally connected. This side spring extends above the bottom of the tapered surface at the conical air inlet of the side Venturi tube and is lower than the top of the tapered surface. This side spring improves the stability of gas entry and evens out the air pressure between the outer diameter of the Venturi tube and the inner wall of the foaming seat, thereby enhancing milk foam formation.

[0006] A positioning groove is provided on the top of the box cover, and a raised positioning column is provided on the rear part of the box cover or the milk box; when the mechanism is placed on one side of the machine body, the positioning groove of the box cover cooperates with the positioning rib on the machine body, and at the same time the steam pipe joint is connected to the steam interface on the machine body, the positioning column is correspondingly inserted into the micro switch hole on the machine body and triggers the micro switch inside the machine body.

[0007] The notch of the positioning groove is narrowed from the outside to the inside, so that the mechanism can be pushed tighter and tighter during the pushing process, thereby improving the stability of the mechanism after installation.

[0008] The cross section of the column reinforcement above the square platform of the positioning column is L-shaped and convex, and the end of the column reinforcement of the positioning column is smaller than the bottom.

[0009] The bottom of the milk box is provided with limiting ribs symmetrically on both sides of the body. The above structure stabilizes the position of the milk box and prevents water drops from the drain pan from entering the bottom of the milk box.

[0010] The outer diameter of the milk box below the milk outlet pipe is provided with a milk pipe groove for accommodating the milk outlet pipe.

[0011] The utility model has a reasonable structural design, a good internal Venturi effect, is easy to produce and use, and has good stability after installation; it is suitable for use as a milk foam generating mechanism for equipment such as coffee machines and beverage machines, and is a structural improvement of similar products. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the utility model.

[0013] Figure 2 yes Figure 1 Schematic diagram of the rear three-dimensional structure.

[0014] Figure 3 yes Figure 1 Schematic diagram of the explosion structure, the framed part in the figure is an enlarged structural view of the Venturi tube.

[0015] Figure 4 yes Figure 1 Schematic diagram of the internal structure after the box lid is opened.

[0016] Figure 5 yes Figure 1 Schematic diagram of the cross-sectional structure at the knob.

[0017] Figure 6 yes Figure 1 Schematic diagram of the structure of the coffee machine in use, where the dotted line represents the body of the coffee machine.

[0018] Figure 7 yes Figure 6 The schematic diagram of the body structure is shown in FIG, in which the milk box and its corresponding mechanism are omitted.

[0019] Serial number and name of the accompanying drawings: 1. Milk box, 2. Turning knob, 3. Knob, 4. Box cover, 401. Positioning slot, 402. Positioning column, 5. Milk outlet pipe, 6. Steam pipe joint, 7. Upper cover, 8. Straw, 9. Milk tube seat, 901. Buckle head, 10. Foaming seat, 1001. Buckle slot, 11. Venturi tube, 1101. Conical air inlet hole, 1102. Side spring piece, 12. Air intake seat, 13. Air intake rod, 14. Machine body, 1401. Limiting rib. Implementation Method

[0020] Now, in conjunction with the accompanying drawings, the structure and use of the utility model are further described. Figure 1-Figure 7As shown, the top box opening of the milk box 1 of the mechanism is provided with a box cover 4, the upper cover and the box cover are connected as one body, the inner diameter of the box opening of the milk box below the box cover is provided with an upper cover 7, the top groove in the upper cover is provided with a milk frother assembly that is snap-fitted and fixed in the top groove of the upper cover, the knob 3 and the knob 2 of the milk frother assembly are respectively provided on the outer diameter of one side of the connection between the milk box and the box cover, and a protruding steam pipe joint 6 is provided on the other side of the connection between the milk box and the box cover, the steam inlet channel of the milk frother assembly at the steam pipe joint is communicated with the milk outlet channel, a milk outlet pipe 5 is provided on the side of the connection between the milk box and the box cover at the milk outlet channel of the milk frother assembly, a suction pipe 8 is provided at the milk inlet channel of the milk frother assembly, and the suction pipe of the milk frother assembly extends into the milk box through the upper cover. Its specific structure is as follows: one end of the knob in the upper cover is fixedly connected to one end of the air inlet rod 13, and the other end of the air inlet rod is inserted into the air inlet cavity on one side of the foaming seat 10 in the upper cover. The notch on one side of the air inlet rod in the foaming seat is symmetrically inserted into the air inlet cavity on the other side and communicates with the four-way mixing cavity on the other side of the air inlet cavity of the foaming seat. A raised part on one side between the openings at both ends of the air inlet seat is provided with an inner hole that fits the four-way mixing cavity and communicates with the four-way mixing cavity. The raised ring rib on one side of the outer diameter of the air inlet seat is fixedly connected to the buckle groove 1001 at the foaming seat; the four A Venturi tube 11 is installed in the conical cavity at one end of the steam pipe connector in the mixing chamber. The outer diameter of the conical air inlet 1101 at one end of the Venturi tube, which is fixed to the foaming seat via the steam pipe connector, corresponds to the conical cavity in the foaming seat's four-way mixing chamber. The other two openings of the four-way mixing chamber in the foaming seat are connected to the straw and milk pipe holder 9, respectively. The through hole in the conical cavity aligned with the conical air inlet communicates with the buffer cavity at one end of the milk pipe holder. One end of the knob in the upper cover is fixedly connected to the raised buckle 901 at the other end of the milk pipe holder. The internal channel of the milk pipe holder is L-shaped, and a sealing ring is installed at the connection between the above corresponding components. The outer diameter of the Venturi tube on the side where the air inlet chamber in the foaming seat is connected to the four-way mixing chamber is equipped with an integrally formed side spring 1102. The side spring 1102 is higher than the bottom of the conical surface of the conical air inlet of the Venturi tube on this side and lower than the top of the conical surface.

[0021] The top of the lid is provided with a positioning groove 401, and the rear of the lid is provided with a raised positioning column 402. When the mechanism is placed on one side of the machine body 14, the positioning groove of the lid cooperates with the positioning rib of the machine body. When the steam pipe joint is connected to the steam interface of the machine body, the positioning column is correspondingly inserted into the micro switch hole of the machine body and triggers the micro switch in the machine body. The notch of the positioning groove narrows from the outside to the inside. The cross-section of the column rib above the square platform of the positioning column is L-shaped and raised, and the end of the column rib of the positioning column is smaller than the bottom. The limiting ribs 1401 are symmetrically provided on both sides of the machine body at the bottom of the milk box. The outer diameter of the milk box below the milk outlet pipe is provided with a milk pipe groove for accommodating the milk outlet pipe. The above-mentioned machine body is a coffee machine.

[0022] Before use, open the box lid, pour fresh milk into the milk box, close the box lid, and return the mechanism and milk box to the corresponding positions on the side of the coffee machine body. Once the coffee machine detects that the mechanism and milk box have been returned to their positions, the coffee machine will function normally. When the coffee machine's milk frothing function is selected, fresh milk enters the frothing seat through the straw, while air enters the air inlet on one side of the frothing seat, and steam enters the steam inlet channel at the steam pipe joint on the other side of the frothing seat. These three factors generate milk foam in the frothing seat, which is then foamed and sprayed out through the milk outlet pipe of the milk pipe seat due to the action of steam. The above-mentioned knob is used to adjust the frothing effect, and the rotating knob is used to adjust the angle of the milk outlet pipe.

Claims

1. A milk frothing mechanism, wherein a milk box (1) is provided with a box cover (4) at the top box opening, an upper cover (7) is provided at the inner diameter of the box opening below the box cover, the upper cover and the box cover are connected as one body, a milk frothing device assembly is provided in the top groove of the upper cover, a knob (3) and a rotating knob (2) of the milk frothing device assembly are respectively provided at the outer diameter of one side of the connection between the milk box and the box cover, a protruding steam pipe joint (6) is provided at the other side of the connection between the milk box and the box cover, a steam inlet channel of the milk frothing device assembly at the steam pipe joint is communicated with a milk outlet channel, a milk outlet pipe (5) is provided at the milk outlet channel of the milk frothing device assembly at the side of the connection between the milk box and the box cover, a suction pipe (8) is provided at the milk inlet channel of the milk frothing device assembly, and the suction pipe of the milk frothing device assembly extends into the milk box through the upper cover; and the mechanism is characterized in that One end of the knob (3) in the upper cover (7) is fixedly connected to one end of the air inlet rod (13), and the other end of the air inlet rod is inserted into the air inlet cavity on one side of the foaming seat (10) in the upper cover. The notch on one side of the air inlet rod in the foaming seat is connected to the four-way mixing cavity on the other side of the air inlet cavity of the foaming seat through the air inlet seat (12) symmetrically inserted into the air inlet cavity on the other side. The raised part on one side between the two end openings in the air inlet seat is provided with an inner hole that fits the four-way mixing cavity and is connected to the four-way mixing cavity. The raised ring rib on the outer diameter side of the air inlet seat is fixedly connected to the buckle groove (1001) at the foaming seat; the foaming seat A venturi tube (11) is provided in the conical cavity at one end of the steam pipe joint (6) in the four-way mixing cavity of the seat. The outer diameter of the conical air inlet hole (1101) at one end of the venturi tube fixed to the foaming seat through the steam pipe joint corresponds to the conical cavity in the four-way mixing cavity of the foaming seat. The other two openings of the four-way mixing cavity in the foaming seat are respectively connected to the straw (8) and the milk tube seat (9). The through hole at the conical cavity aligned with the conical air inlet hole communicates with the buffer cavity at one end of the milk tube seat. One end of the rotating knob (2) in the upper cover is fixedly connected to the buckle head (901) raised at the other end of the milk tube seat. The channel in the milk tube seat is L-shaped.

2. The milk foam generating mechanism according to claim 1, characterized in that An integrally formed side spring piece (1102) is provided on the outer diameter of the venturi tube (11) on the side where the air inlet cavity in the foaming seat (10) is integrally connected to the four-way mixing cavity. The side spring piece is higher than the bottom of the conical surface at the conical air inlet hole (1101) of the side venturi tube and lower than the top of the conical surface.

3. The milk foam generating mechanism according to claim 1, characterized in that The top of the box cover (4) is provided with a positioning groove (401), and the rear of the box cover or the milk box (1) is provided with a raised positioning column (402); when the mechanism is placed on one side of the machine body (14), the positioning groove of the box cover cooperates with the positioning rib on the machine body, and when the steam pipe joint (6) is connected to the steam interface on the machine body, the positioning column is correspondingly inserted into the micro switch hole on the machine body and triggers the micro switch in the machine body.

4. The milk foam generating mechanism according to claim 3, characterized in that The notch of the positioning groove (401) decreases from the outside to the inside.

5. The milk foam generating mechanism according to claim 3, characterized in that The cross section of the column reinforcement above the square platform of the positioning column (402) is L-shaped and convex, and the end of the column reinforcement of the positioning column is smaller than the bottom.

6. The milk foam generating mechanism according to claim 1, characterized in that Limiting ribs (1401) are symmetrically provided on both sides of the body (14) at the bottom of the milk box (1).

7. The milk foam generating mechanism according to claim 1, characterized in that A milk pipe groove for accommodating the milk pipe is provided on the outer diameter of the milk box (1) below the milk pipe (5).

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