Milk foaming machine

Abstract

The invention discloses a milk foaming machine (1) which comprises a container cover (2), a container cup (3), a seat (4), a center shaft (5), a stirrer (6), a heat-resistant ring (10), a heating plate (12), a driving device (8) and a driving magnet plate (7). The driving device (8) is used for driving the stirrer (6), upper end of the center shaft (5) is fixed to the container cover (2), the lower end of the center shaft (5) is rotationally connected with the stirrer (6), a positioning device is arranged on a heating surface (121) of the heating plate (12), a groove (19) for accommodating thelower portion of the container cup (3) is formed by the positioning device and the heating surface (121), a protrusion (31) is arranged on an inner bottom surface (30) of the container cup (3), the stirrer (6) is provided with a bottom plane (66), and the height location of the stirrer (6) can be axially adjusted at the lower end of the center shaft (5) in the up-down directions, so that the bottom plane (66) can be butted onto the protrusion (31).

Description

technical field [0001] The invention relates to a milk foaming machine, in particular to a milk foaming machine which can adapt to container cups of various materials with height and size differences, and the container cups can be separated. Background technique [0002] When tasting coffee, we like to add milk and milk foam to coffee, such as adding 1:1 milk and milk foam to cappuccino coffee, and 3:1 milk to latte coffee And milk foam, by adding high-quality fine milk foam and different proportions of milk into the coffee to form milk foam of different thicknesses, so as to form a variety of delicate and fragrant tastes, therefore, it is particularly important to provide high-quality and fine milk foam . [0003] At present, there are many milk frothers with magnetic stirring and foaming on the market. Some of them hang the agitator on the lower end of the shaft through the shaft on the container cover, and some of them install the agitator on the bottom of the container ...

AI Technical Summary

Problems solved by technology

[0008] The deficiencies of its existence, one is that the agitator (3) contacts and rubs with the spherical surface (35) annular surface, and the frictional resistance is bigger, wears and teares faster, affects high-speed stirring;

[0009] The second is that the positioning device (160) is not simply formed by stretching the bottom surface of the container (2), but a separate positioning device (160) is welded or otherwise fixed on the inner bottom surface of the container (2). The process is more complicated, and the container (2) When the non-stick coating is sprayed inside, the spraying around the positioning device (160) may be uneven;

[0010] The third is that the boss piece (6) relies on its magnet (61) and the magnet (91) of the magnet seat (90) for magnetic positioning, and the position of the boss piece (6) placed on the inner bottom surface of the container (2) may be inconsistent The magnet (31) of the stirrer (3) may not be concentric with the magnet (51) in the magnet plate (52) on the shaft (54) of the motor (53) of the driving device (5), and the positioning may be inaccurate or eccentric Hidden dangers affect the high-speed rotation and stirring of the agitator (3). At the same time, the container (2) and the heating device (8) are welded in one structure, and the container (2) is inconvenient to be cleaned by a dishwasher.

[0022] One is that in the one-piece structure of the container as described above, the inside of the container is usually sprayed with a non-stick coating such as Teflon, so the main problems are that the container is not convenient for dishwasher cleaning, and the bottom of the agitator sometimes scratches the bottom surface of the container. sticky coating problem

[0023] The second is that in some structures where the container and the seat can be separated, the outer surface of the container sometimes contacts the inner hole of the seat and transfers heat to the seat, and the container provided to the user is relatively simple.

[0024] The third is that when there is an error change in the height of the container, the bottom of the agitator will scrape the bottom of the container or the agitator will slip, which will affect the normal use; such as the glass used in the milk foaming machine, the general height size ranges from 120 to 150mm. There is a height dimension error of about 1~2mm in the glass cup, which has a great influence on the speed and foaming effect of the magnetically driven stirrer, because the driving magnet disc and the stirrer are generally equipped with NdFeB permanent magnets, The distance change has a great influence on the magnetic field strength or driving force of the permanent magnet. For example, when the height of the container has a negative deviation, the bottom of the agitator sometimes touches the inner bottom of the container, which affects the normal stirring of the agitator. When the height of the container has a positive deviation , the driving magnetic force of the drive magnet disk on the agitator is significantly reduced, causing the agitator to fail to keep up with the speed of the drive magnet disk on the drive device and slip and make noise. For the agitator of the structure, it is particularly important to keep the distance between the agitator and the driving magnet disk stable, which directly affects whether the milk foamer can be used normally.

[0025] The fourth is the suspension type agitator. The weight of the agitator and the magnetic attraction force of the driving magnet plate on the agitator are all borne by the force surface of the suspension and hoisting structure, which leads to relatively fast wear of the agitator and increased friction, which affects high speed stirring

[0026] In addition, when the milk foaming machine is not in use, the agitator is still installed at the working position at the bottom of the container for a long time, so that the motor shaft of the drive device is subjected to the one-way magnetic attraction force of the agitator to the drive magnet disk upward for a long time, which may easily cause the motor shaft to be damaged. Increased clearance or increased noise

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