A milk frothing device

Abstract

The utility model discloses a kind of milk frothing devices, including milk tank (10), mounting seat (20);Mounting seat is equipped with foamer assembly (50), air conditioning assembly (1), connecting seat (3) in clamping;Air conditioning assembly (1) includes air conditioning rod (11), airway fixed seat (12) and knob (13);Air conditioning rod head cylindrical (111) is provided with adjusting groove (114), first boss (115) is arranged in groove, the size of air flow can be adjusted by the gap of first boss and airway fixed seat (12), to adjust the size and delicate degree of milk froth;One-way valve (8) is equipped in connecting seat (3) connection airway entrance, can prevent high-temperature steam stop, milk is poured into connecting airway, block and contaminate airway entrance, solve the problem that airway entrance hole and gap are not cleaned thoroughly.

Description

Technical Field

[0001] This utility model relates to the field of coffee machine accessories technology, and in particular to a milk frothing device. Background Technology

[0002] Some coffee machines are equipped with milk frothers, which create a layer of milk foam on top of the coffee after brewing, giving the beverage a richer flavor. Most existing milk frothers use the Venturi principle for frothing. A steam pipe from the main body of the coffee machine is inserted into the steam inlet pipe of the milk frother. The milk frother consists of a steam inlet pipe, a milk inlet pipe, an air inlet pipe, a frothing chamber, and a milk frothing outlet pipe. The steam inlet pipe, milk inlet pipe, and air inlet pipe are all connected to the frothing chamber. When pressurized steam is output from the steam pipe, a negative pressure is created in the milk inlet pipe and the air inlet pipe, thus promoting the milk and air to enter the frothing chamber to complete the milk frothing process. Finally, the milk foam is output from the milk frothing outlet pipe. Currently, there is no valve between the milk suction pipe and the air inlet pipe of the milk frother, allowing milk from the suction pipe to easily enter the air inlet pipe, clogging the air intake passage and making cleaning difficult. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a milk frothing device that can adjust the air flow into the frothing chamber to meet the customer's needs for milk froth size, while preventing milk from flowing back into the air inlet pipe and causing blockage, thus ensuring that the air inlet pipe is not contaminated or clogged, thereby overcoming the shortcomings of the prior art.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0005] A milk frothing device includes a milk tank lid, a milk tank, and a mounting base; a frother assembly, an air conditioning assembly, and a connecting base are fitted inside the mounting base; characterized in that: the air conditioning assembly includes an air conditioning rod, an air passage fixing base, and a knob; the frother assembly includes a steam pipe, a milk inlet pipe, a milk frothing nozzle, and a milk frothing spray pipe; the connecting base includes a first seat cavity, a connecting air passage, and a second seat cavity connected in sequence; the air passage fixing base is fixedly installed in the second seat cavity, the head of the air conditioning rod is inserted into the air passage fixing base, and a one-way valve is installed inside the connecting air passage near the air passage fixing base, the one-way valve being used to prevent fluid from entering the air passage fixing base from the first seat cavity.

[0006] Furthermore, the first chamber includes a first port, a second port, and a third port, with the steam pipe inserted into the first port, the milk frothing nozzle inserted into the second port, and the milk inlet pipe inserted into the third port.

[0007] Furthermore, the outer surface of the air conditioning rod head is provided with an air inlet groove, and the air inlet is connected to the air inlet groove. Ambient air enters the air inlet groove from the air inlet. The air inlet groove is provided with two or more first protrusions of different heights, so that the first protrusions and the inner circumferential surface of the air passage fixing seat form gaps of different sizes. The air passage fixing seat is provided with a first through hole, one end of which opens into the inner circumference of the air passage fixing seat, and the other end is connected to the inlet side of the one-way valve.

[0008] Furthermore, the one-way valve is a duckbill valve.

[0009] Furthermore, a step is provided at one end of the connecting air passage, and the flange of the duckbill valve is fixed on the step.

[0010] Furthermore, a second boss is provided on the outer surface of the air passage fixing seat, the first through hole passes through the second boss, and the second boss extends into the connecting air passage and presses against the flange of the duckbill valve.

[0011] Furthermore, the air inlet includes a connected conical air inlet and a buffer hole, and the air inlet groove is provided with three first protrusions. The first protrusion closest to the buffer hole has the largest distance from the inner circumference of the fixed seat, and the first protrusion furthest from the buffer hole has the smallest distance from the inner circumference of the fixed seat.

[0012] This utility model has the following advantages: the first protrusion in the air inlet groove is designed to form different air inlet gaps, and the air flow can be adjusted accordingly, so that the emulsification and fineness of the milk foam can have a variety of changes and choices, increasing user satisfaction; a one-way valve is set at the inlet of the main air inlet, which avoids the backflow of milk from clogging and contaminating the air inlet and gaps, and makes the cleaning of the air conditioning mechanism simple and thorough. Attached Figure Description

[0013] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0014] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0015] Figure 1 This is a schematic diagram of the overall structure of a milk frothing device according to the present invention;

[0016] Figure 2 This is a schematic diagram of the overall structure of the internal components of a milk frothing device according to the present invention;

[0017] Figure 3 This is a schematic diagram of the overall structure of the foaming device assembly, air conditioning assembly, and connecting base of this utility model;

[0018] Figure 4 for Figure 3 An explosion diagram;

[0019] Figure 5 This is a top view of the overall structure of the foaming unit, air conditioning unit, and connecting base of this utility model;

[0020] Figure 6 for Figure 5 Cross-sectional view along the AA direction;

[0021] Figure 7 for Figure 6 A partial sectional view;

[0022] Figure 8 This is a schematic diagram of the air inlet groove and the first boss at the head of the adjusting rod. Detailed Implementation

[0023] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0024] See Figures 1-8 As shown, this utility model discloses a milk frothing device; including a milk tank cover 9, a milk tank 10, and a mounting base 20; a frother assembly 50, an air conditioning assembly 1, and a connecting base 3 are installed in the mounting base; the device is characterized in that: the air conditioning assembly 1 includes an air conditioning rod 11, an air passage fixing base 12, and a knob 13; the frother assembly 50 includes a steam pipe 4, a milk inlet pipe 6, a milk frothing nozzle 5, and a milk frothing spray pipe 7; the connecting base 3 includes a first seat cavity, a connecting air passage, and a second seat cavity connected in sequence; the air passage fixing base 1 is fixedly installed in the second seat cavity, the head 111 of the air conditioning rod is inserted into the air passage fixing base 12, and a one-way valve is installed inside the connecting air passage near the air passage fixing base, the one-way valve being used to prevent fluid from entering the air passage fixing base 12 from the first seat cavity.

[0025] The first chamber includes a first port 41, a second port 51, and a third port 61. The steam pipe 4 is inserted into the first port, the milk frothing nozzle 5 is inserted into the second port, and the milk inlet pipe 6 is inserted into the third port.

[0026] An air inlet groove 114 is provided on the outer surface of the air conditioning rod head 111. An air inlet is connected to the air inlet groove 114. Ambient air enters the air inlet groove 114 from the air inlet. Two or more first protrusions 115 of different heights are provided in the air inlet groove, so that the first protrusions and the inner circumferential surface of the air passage fixing seat 12 form gaps of different sizes. A first through hole is provided in the air passage fixing seat 12. One end of the first through hole opens into the inner circumference of the air passage fixing seat, and the other end is connected to the inlet side of the one-way valve. The one-way valve 8 is a duckbill valve. A step 31 is provided at one end of the air passage connection. The flange of the duckbill valve is fixed on the step 31.

[0027] The outer surface of the air passage fixing seat 12 is provided with a second boss, the first through hole passes through the second boss, and the second boss extends into the air passage and presses against the flange surface of the duckbill valve.

[0028] The air inlet includes a connected conical air inlet 112 and a buffer hole 113. The air inlet groove is provided with two or more first protrusions 115. The first protrusion 115 closer to the buffer hole 113 has the largest distance from the inner circumference of the fixed seat 12, and the first protrusion 115 farther from the buffer hole 113 has the smallest distance from the inner circumference of the fixed seat 12.

[0029] The working principle of this milk frothing device is as follows: The air duct fixing seat 12 is fitted into a cylindrical groove at one end of the connecting seat 3, acting as a transition part between the air regulating rod 11 and the connecting seat 3, allowing the cylindrical head of the air regulating rod 11 to gradually transition into the connecting seat, facilitating installation and fit; the air duct fixing seat 12 has an air inlet that mates with the connecting air duct opening of the connecting seat; the connecting air duct is directly connected to the emulsification chamber of the frothing unit. When high-temperature steam enters the emulsification chamber through the steam pipe 4, and the steam velocity reaches a certain condition, negative pressure is generated in the connecting air duct, drawing milk from the milk tank into the connecting air duct and mixing it with air before entering the emulsification chamber to produce milk foam; when the high-temperature steam stops... As the high and low pressures gradually reach equilibrium, a small amount of milk may flow back from the emulsification chamber to the air inlet of the air inlet fixing seat 12 through the connecting air passage. This may clog and contaminate the gaps and slots of the air inlet. When cleaning with water, the gaps and slots of the air inlet cannot be effectively cleaned, resulting in scaling, blockage, and contamination. To prevent this problem, a one-way valve is installed at the air outlet of the air inlet fixing seat 12 to prevent milk backflow. This one-way valve is a duckbill valve with a slit in the middle. When air is drawn in, the pressure opens the duckbill. When the high-temperature steam stops, the backflowing milk presses down on the duckbill, sealing it and preventing milk from contacting the gaps and slots at the air passage inlet.

[0030] The air conditioning principle is as follows: The head of the air conditioning rod 11 is cylindrical and is directly inserted into the inner surface of the air passage fixing seat 12 with a gap between them. The head of the air conditioning rod 11 can rotate on the inner surface of the air passage fixing seat 12 to adjust the air flow. A circumferential air inlet groove 114 is opened in the cylindrical head 111 of the air conditioning rod. This groove has an air inlet 112 that communicates with the outside atmosphere. Three first protrusions 115 of different heights are set in the air inlet groove. The change in the height of the gap formed between the first protrusions and the inner circumferential surface of the air passage fixing seat 12 is the change in the cross-sectional area of ​​the air flow. Assuming that the flow velocity is constant, the air flow will change with the different heights of the first protrusions. As the head of the air conditioning rod 111 rotates in the cylindrical groove inside the air passage fixing seat 12, the air flow to the air passage will change in different sizes, thereby adjusting the different foam sizes and delicate texture of the milk foam.

[0031] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A milk frothing device comprising a milk tank cover (9), a milk tank (10), a mounting base (20); a frother assembly (50), an air regulating assembly (1), a connecting base (3) are mounted in the mounting base; characterized in that: The air conditioning assembly (1) includes an air conditioning rod (11), an air passage fixing seat (12), and a knob (13); the foamer assembly (50) includes a steam pipe (4), a milk inlet pipe (6), a milk foam nozzle (5), and a milk foam spray pipe (7); the connecting seat (3) includes a first seat cavity, a connecting air passage, and a second seat cavity connected in sequence; the air passage fixing seat (12) is fixedly installed in the second seat cavity, and the head (111) of the air conditioning rod is inserted into the air passage fixing seat (12). A one-way valve is installed inside the connecting air passage near the air passage fixing seat. The one-way valve is used to prevent fluid from entering the air passage fixing seat (12) from the first seat cavity.

2. The milk frothing device according to claim 1, characterized in that: The first chamber includes a first port (41), a second port (51), and a third port (61). The steam pipe (4) is inserted into the first port, the milk frothing nozzle (5) is inserted into the second port, and the milk inlet pipe (6) is inserted into the third port.

3. The milk frothing device according to claim 1, characterized in that: An air inlet groove (114) is provided on the outer surface of the air conditioning rod head (111). An air inlet is connected to the air inlet groove. Ambient air enters the air inlet groove (114) from the air inlet. Two or more first protrusions (115) of different heights are provided in the air inlet groove, so that the first protrusions and the inner circumferential surface of the air passage fixing seat (12) form gaps of different sizes. A first through hole is provided in the air passage fixing seat (12). One end of the first through hole opens into the inner circumference of the air passage fixing seat, and the other end is connected to the inlet side of the one-way valve.

4. The milk frothing device according to claim 3, characterized in that: The one-way valve (8) is a duckbill valve.

5. The milk frothing device according to claim 4, characterized in that: One end of the connecting air passage is provided with a step (31), and the flange of the duckbill valve is fixed on the step.

6. The milk frothing device according to claim 3, characterized in that: The outer surface of the air passage fixing seat (12) is provided with a second boss, the first through hole passes through the second boss, and the second boss extends into the air passage and presses against the flange of the duckbill valve.

7. The milk frothing device according to claim 6, characterized in that: The air inlet includes a connected conical air inlet (112) and a buffer hole (113). The air inlet groove is provided with three first protrusions (115). The first protrusion closest to the buffer hole has the largest distance from the inner circumference of the fixed seat (12), and the first protrusion furthest from the buffer hole has the smallest distance from the inner circumference of the fixed seat (12).

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