An electric milk frother with a novel rotating stirring head

Abstract

This utility model discloses an electric milk frother with a novel rotating stirring head. The device includes a frother, a rotating shaft rotatably connected to the top of the frother, and a rotating stirring unit at the end of the rotating shaft. The rotating stirring unit comprises a toothed disc fixedly mounted at the end of the rotating shaft, a rack fixedly mounted at the end of the toothed disc, the racks arranged in a circular array, and a screen sleeved and fixed to the outer surface of the toothed disc. A driving component is installed inside the frother, and the driving component is drivenly connected to the rotating shaft. Compared to a traditional single-layer flat disc stirring head, this device, through its rotating stirring unit, increases the shear area and turbulence path, enabling more even air entrainment into the liquid, resulting in finer and more uniform milk foam. Simultaneously, the optimized flow field reduces turbulence, improves energy utilization, and avoids wasting power on ineffective vibration and heat generation, thereby reducing the load on the driving component and extending the motor's service life.

Description

Technical Field

[0001] This utility model relates to the field of beverage preparation equipment technology, and in particular to an electric milk frother with a novel rotating stirring head. Background Technology

[0002] A milk frother is a specialized device that uses high-speed rotation to stir, emulsify, and inject air into liquids such as milk to create fine milk foam. It is widely used in modern life scenarios such as coffee making and beverage preparation. Its core working principle is that a motor drives the stirring head to rotate at high speed. A specific structure on the stirring head shears, impacts, and turbulents the liquid, thereby drawing air into the liquid to form stable foam.

[0003] Currently, most commonly used mixing heads are single-layer flat disc structures made of simply wound wire, with a few serrations or round holes on the edges. Their mixing efficiency is low, producing coarse, uneven, and unstable milk foam, failing to meet the dense, silky micro-foam standards required for professional latte art. Furthermore, when mixing high-viscosity liquids, they are prone to uneven mixing and excessive power load.

[0004] The problem arises because the single-layer flat disc structure provides limited shear area and turbulence paths, making it unable to fully and multi-layer tear and emulsify the milk. Secondly, its simple serrated or perforated design generates a relatively uniform flow field during rotation, resulting in inefficient and uneven air entrainment and inconsistent bubble sizes. Finally, this structure is prone to turbulence when encountering resistance, leading to low energy utilization. Some power is wasted on ineffective vibration and heat generation instead of being used effectively for foam production, thus placing a heavy load on the motor and producing poor results. Utility Model Content

[0005] The purpose of this invention is to provide an electric milk frother with a novel rotating stirring head to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an electric milk frother with a novel rotating stirring head, comprising a frother, a rotating shaft rotatably connected to the top of the frother, and a rotating stirring unit provided at the end of the rotating shaft, the rotating stirring unit comprising a toothed disc, a toothed rack, and a screen:

[0007] The toothed disc is fixedly mounted on the end of the rotating shaft, the rack is fixedly mounted on the end of the toothed disc, the rack is arranged in a ring array, the screen is sleeved and fixed on the outer surface of the toothed disc, the bubbler is provided with a driving component inside, the driving component is drivenly connected to the rotating shaft, and the toothed disc, rack and screen rotate synchronously.

[0008] Preferably, the outer surface of the toothed disc is provided with a protective shell, and the screen is fixedly assembled inside the protective shell.

[0009] Preferably, a fixing bolt is provided inside the protective shell, the fixing bolt penetrates the protective shell, and the fixing bolt is threadedly engaged with the rotating shaft.

[0010] Preferably, an indicator light is fixedly installed inside the bubbler.

[0011] Preferably, an adjustment button is provided below the signal light, and the adjustment button is electrically connected to the signal light.

[0012] Preferably, a charging interface is fixedly installed inside the bubbler, and the bubbler is electrically connected to the charging interface.

[0013] Preferably, the bubbler has a slot inside.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] This device, through its rotary stirring unit, increases the shear area and turbulence path compared to traditional single-layer flat-plate stirring heads. This allows for more even air entrainment into the liquid, resulting in finer, more uniform milk foam with significantly improved stability. This meets the requirements of professional latte art for dense, silky micro-foam. The multi-layered structure of the rotary stirring unit ensures thorough mixing of the liquid, reducing resistance during the mixing process. Even with high-viscosity liquids, it achieves uniform mixing, avoiding uneven mixing. Simultaneously, the optimized flow field reduces turbulence, improves energy utilization, and avoids wasting power on ineffective vibration and heat generation, thereby reducing the load on the drive components and extending the motor's lifespan. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the bubble generator of this utility model;

[0018] Figure 3 This is a schematic diagram of the rotary stirring unit of this utility model;

[0019] Figure 4 This is a schematic diagram of the fixing bolt of this utility model.

[0020] In the diagram: 1. Aerator; 2. Rotating shaft; 3. Rotating stirring unit; 31. Gear disc; 32. Gear rack; 33. Screen; 34. Protective shell; 35. Fixing bolt; 4. Indicator light; 5. Adjustment button; 6. Charging interface; 7. Card slot. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This utility model provides, for example Figures 1 to 2 An electric milk frother with a novel rotating stirring head is shown, comprising a frother 1, with a rotating shaft 2 rotatably connected to the top of the frother 1. The rotating shaft 2 is characterized by having a rotating stirring unit 3 at its end, the rotating stirring unit 3 comprising a toothed disc 31, a toothed rack 32, and a screen 33.

[0023] The toothed disc 31 is fixedly mounted on the end of the rotating shaft 2, and the rack 32 is fixedly mounted on the end of the toothed disc 31. The rack 32 is arranged in a ring array. The screen 33 is sleeved and fixed on the outer surface of the toothed disc 31. The bubbler 1 is equipped with a driving component, which is driven and connected to the rotating shaft 2. The toothed disc 31, rack 32 and screen 33 rotate synchronously.

[0024] Example 1: In this example, the rotating shaft 2 is driven to rotate at high speed by the driving component, so that the rotating stirring unit 3 fixed at the end of the rotating shaft 2 rotates synchronously, forming a double-layer synergistic stirring-emulsification system. When the rotating shaft 2 rotates at high speed, its tooth surface will generate uniform and dense shear force on the milk. Compared to the limited number of serrations in a traditional single-layer flat disc, the distributed structure of the rack 32 increases the shear area, enabling it to quickly tear milk into fine liquid streams. Simultaneously, the wedge-shaped channels formed between adjacent racks 32 generate negative pressure during rotation, efficiently entraining air and initially forming dispersed small bubbles. This solves the problems of limited shear area and uneven air entrainment in traditional structures. The stainless steel screen 33, fitted onto the outer surface of the rack 31, rotates synchronously. When the milk-bubble mixture, initially processed by the racks 32, flows to the screen 33, the uniform mesh of the screen 33 performs a filtering emulsification of the mixture. On one hand, the mesh further breaks down the initial bubbles of varying sizes into microbubbles; on the other hand, the high-frequency flow of the mixture between the mesh enhances the fusion of liquid molecules and bubbles, improving milk foam stability and solving the defects of coarse and uneven milk foam in traditional methods.

[0025] like Figures 3 to 4 An electric milk frother with a novel rotating stirring head is shown, comprising a frother 1, with a rotating shaft 2 rotatably connected to the top of the frother 1. The rotating shaft 2 is characterized by having a rotating stirring unit 3 at its end, the rotating stirring unit 3 comprising a toothed disc 31, a toothed rack 32, and a screen 33.

[0026] The toothed disc 31 is fixedly mounted on the end of the rotating shaft 2, and the rack 32 is fixedly mounted on the end of the toothed disc 31. The rack 32 is arranged in a ring array. The screen 33 is sleeved and fixed on the outer surface of the toothed disc 31. The bubbler 1 is equipped with a driving component, which is driven and connected to the rotating shaft 2. The toothed disc 31, rack 32 and screen 33 rotate synchronously.

[0027] A protective shell 34 is provided on the outer surface of the gear disc 31, and the screen 33 is fixedly installed inside the protective shell 34. A fixing bolt 35 is provided inside the protective shell 34, penetrating the protective shell 34 and threadedly engaging with the rotating shaft 2. An indicator light 4 is fixedly installed inside the bubbler 1. An adjustment button 5 is located below the indicator light 4 and is electrically connected to the indicator light 4. A charging interface 6 is fixedly installed inside the bubbler 1 and is electrically connected to the charging interface 6. A slot 7 is provided inside the bubbler 1.

[0028] Example 2: In this example, the frother 1 is equipped with a lithium battery, which can be charged through the charging interface 6. The drive component is a DC motor, which is electrically connected to the lithium battery. The corresponding speed setting is selected according to the type of milk. For example, when stirring whole milk, press the adjustment button 5 once to switch to the high speed. The indicator light 4 will flash green three times and then remain on. Insert the rotating stirring unit 3 into the container containing milk. The drive component drives the rotating shaft 2 and the rotating stirring unit 3 to rotate at high speed. The rack 32 and the screen 33 work together to shear, emulsify, and entrain air in the milk, generating fine and stable milk foam. During stirring, the protective shell 34 stabilizes the flow field and prevents liquid splashing. After foaming is complete, press and hold the adjustment button 5 to turn off the frother 1, and the indicator light 4 will turn off. To clean the rotating stirring unit 3, unscrew the fixing bolt 35, and remove the protective shell 34, screen 33, and rack 31 in sequence. Rinse with clean water and let dry. Replace the stirring head, cleaning brush, and other accessories.

[0029] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electric milk frother with a novel rotating stirring head, comprising a frother (1), wherein a rotating shaft (2) is rotatably connected to the top of the frother (1), characterized in that, The end of the rotating shaft (2) is provided with a rotating stirring unit (3), which includes a toothed disc (31), a toothed rack (32), and a screen (33). The toothed disc (31) is fixedly mounted on the end of the rotating shaft (2), the rack (32) is fixedly mounted on the end of the toothed disc (31), the rack (32) is arranged in a ring array, the screen (33) is sleeved and fixed on the outer surface of the toothed disc (31), the bubbler (1) is provided with a driving component, the driving component is drivenly connected to the rotating shaft (2), and the toothed disc (31), rack (32) and screen (33) rotate synchronously.

2. An electric milk frother with a new rotary whisker according to claim 1, characterized in that, The outer surface of the toothed disc (31) is provided with a protective shell (34), and the screen (33) is fixedly assembled inside the protective shell (34).

3. An electric milk frother with a novel rotating stirring head according to claim 2, characterized in that, The protective shell (34) is provided with a fixing bolt (35) inside, the fixing bolt (35) penetrates the protective shell (34), and the fixing bolt (35) is threadedly engaged with the rotating shaft (2).

4. The electric milk frother with a new rotary whisker according to claim 1, characterized in that, The bubbler (1) is internally fitted with a signal light (4).

5. An electric milk frother with a new rotary whisker according to claim 4, characterized in that, An adjustment button (5) is provided below the signal light (4), and the adjustment button (5) is electrically connected to the signal light (4).

6. The electric milk frother with a new rotary whisker according to claim 1, characterized in that, The bubbler (1) is internally fitted with a charging interface (6), and the bubbler (1) is electrically connected to the charging interface (6).

7. An electric milk frother with a novel rotating stirring head according to claim 1, characterized in that, The bubbler (1) has a slot (7) inside.

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