Coffee making machine capable of providing steam

Abstract

The invention relates to a coffee machine which can provide steam, and comprises a water tank, a water heater, a coffee squeezing device and a steam generator. The water heater and the steam generator are respectively provided with electrothermal pipes; a water pump which can regulate water supply press is arranged on a pipeline between the water outlet of the water tank and the water inlet of the water heater; the water heater is provided with a first water outlet and a second water outlet; hot water in the water heater is transported to the coffee squeezing device and the steam generator respectively through the first water outlet and the second water outlet; a pipeline outside the first water outlet is provided with a first electromagnetic valve; and a pipeline outside the second water outlet is provided with a second electromagnetic valve. Two-stage heating design is adopted when the steam is produced, and therefore the starting load of the product is low, the structure is reasonable, the heat utilization ratio is high, the volume is small and the production cost is low.

Description

technical field [0001] The invention relates to a coffee machine, in particular to a coffee machine capable of providing steam. Background technique [0002] A commonly used coffee machine mainly includes a water tank, a water heater and a coffee pressing device. When making coffee, the water pump originally generates a high pressure of 15 bar to pump the water in the water tank to the water heater, and then the heated water enters the coffee pressing device to prepare coffee; some coffee machines There is also a steam device, which can use steam to make foam for the brewed fresh milk as needed, so that the brewed coffee tastes better, and the preparation of steam is carried out at a lower pressure, and the suitable pressure is generally around 2bar. Therefore, an independent steam generator needs to be set up in the coffee machine. When steam is needed, water is injected from the water tank into the steam generator to be heated, and the water is heated to boil to generate s...

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Problems solved by technology

[0002] A commonly used coffee machine mainly includes a water tank, a water heater and a coffee pressing device. When making coffee, the water pump originally generates a high pressure of 15 bar to pump the water in the water tank to the water heater, and then the heated water enters the coffee pressing device to prepare coffee; some coffee machines There is also a steam device, which can use steam to make foam for the brewed fresh milk as needed, so that the brewed coffee tastes better, and the preparation of steam is carried out at a lower pressure, and the suitable pressure is generally around 2bar. Therefore, an independent steam generator needs to be set up in the coffee machine. When steam is needed, water is injected from the water tank into the steam generator to be heated, and the water is heated to boil to generate steam. , the steam generator needs to be equipped with a larger power electric heating tube. In addition, in the process of generating steam, in order to generate a large amount of steam per unit time to meet the demand; therefore, the volume of the steam generator of the existing coffee machine is generally relatively large. Large, resulting in many shortcomings: 1. Since the preparation of hot water and the preparation of steam are two independent systems, the total power of the electric heating tubes of the two systems is relatively large, the start-up load of the equipment is large, the energy utilization is unreasonable, and it is easy to There are potential safety hazards; 2. Due to the large power and large volume, the cost of the product will inevitably increase. For example, the cost of materials used to manufacture the steam generator, and the matching power cords, pipes and other materials will increase; 3. The cost of the product Bulky and hard to get people to like

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