A foaming steam rod

Abstract

The invention relates to a foaming steam rod. The foaming steam rod comprises a Venturi tube, the inlet end of the Venturi tube is connected with a steam spray nozzle in a sealed mode, and the outlet end of the Venturi tube is a steam-milk-air mixing channel. The foaming steam rod is characterized in that a casing pipe sleeves the circumference of the Venturi tube and forms a gap from the Venturi tube, and the gap forms a milk channel for sucking milk in; under the action of local vacuum generated when the steam spray nozzle sprays steam into the Venturi tube, milk and air can be sucked into the Venturi pipe. Compared with the prior art, the foaming steam rod has the advantages that when the steam is sprayed out, the milk inside a cup can be sucked in and mixed with the steam and the air but cannot be fully emulsified in one step, the non-emulsified milk can be sucked in again form secondary emulsification after being layered, and lastly, rich and fine foam can be formed.

Description

technical field [0001] The invention relates to a device for automatically inhaling milk to heat and generate foam, in particular to a foaming steam rod installed on a coffee machine. Background technique [0002] At present, fully automatic or semi-automatic coffee machines directly use the steam wand nozzle connected to the steam pipe to make Italian cappuccino coffee. The steam emitted by the steam pipe nozzle forms a negative pressure space, and the milk, air, The steam mixes to form milk froth. However, to brew a smooth cup of cappuccino coffee, the fineness and softness of the milk foam are very important. When using it, the operator needs to place the steam wand nozzle in a container such as a cup or pot containing cold milk , and place the nozzle under the milk or on the free surface according to whether you want to heat or froth the milk, while the traditional steam wand nozzle only has a few spray holes at the end, and the distance between the steam pipe and the s...

AI Technical Summary

Problems solved by technology

For example, US20070031558 discloses a device for frothing milk. The milk is put into a container with refrigeration function, connected to the emulsification device through a long hose, and released through the steam nozzle after emulsification. The hose must pass a peristaltic pump to control the supply of milk. This device has certain requirements on the temperature and flow of milk, and its structure is complicated.

In order to solve the above-mentioned technical problems, as a Chinese invention patent "heating and emulsification device" with the patent number ZL01823776.2 (authorized announcement number CN1262232C) discloses an emulsification chamber with an opening for delivering milk with a predetermined milky degree. A steam inlet pipe into the emulsification chamber, and a milk inlet pipe and an air inlet pipe communicated with the steam inlet pipe, and also provided with an air flow regulator and a milk flow regulator, respectively operatively connected to the air inlet pipe and the milk inlet pipe connected, the air flow regulator and the milk flow regulator are structurally connected in a single body and are adapted to collectively vary the respective flow rates in order to gradually vary the ratio of milk to milk in the final product, although the device It can adjust the temperature of the final product, air, milk quantity and flow rate, but it still needs to open the special regulators of the air inlet pipe and the milk inlet pipe respectively during use, and the opening and closing of the regulators require additional Control components, which are often worn during use, may cause malfunctions, and correspondingly increase the overall cost of the emulsification device; on the other hand, if the milk is placed in the milk container, if the milk is not frothed in time, It is often easy to cause milk to deteriorate, and the various parts of the emulsification device are not easy to disassemble, and it is not convenient to clean the milk dirt left in the device after foaming

[0004] Similarly, as a Chinese invention patent "Steam Frothing Device with Foam Flow Regulating System" with patent number ZL200610074976.9 (authorized announcement number is CN100558280C) discloses a steam bubbling device including steam inlet, milk inlet, air inlet, and suitable for Vacuum chamber in which steam, liquid milk and air are received, with restriction to conduct the product at high speed, emulsification chamber; the emulsification chamber has an outlet for the finished foam out of the emulsification chamber and a foam flow regulation system , the froth flow regulating system can be designed to weaken the kinetic energy of the froth flow and fully change the direction of the froth flow, so that the froth can be smoothly delivered out of the frothing device. Not strong, the steam and milk cannot be fully mixed in the vacuum chamber, so that the milk foam produced by the emulsification chamber is not rich and uniform, and some large foam will be delivered from the foam flow adjustment system and the delivered foam is not durable

[0005] Although the milk frothing device installed in the coffee machine can avoid the experience or skill of the operator who needs to hold the steam wand nozzle to froth the milk, there are still defects that the milk cannot be fully emulsified in the actual use process, and Some coffee-making enthusiasts still like to hold the steam wand to prepare milk froth, hoping to obtain improved quality frothed milk by improving the traditional steam wand

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