brewing unit of coffee machine

Abstract

The invention discloses a brewing unit of a coffee maker. The unit comprises a top head and a brewing device; a liquid outlet pipe is arranged in the top head, the top head comprises a fixed part (1) and a movable part (2), and an upper filter screen (3) is fixed onto the movable part (2); the fixed part (1) is matched with the movable part (2) in a sleeving mode, a limit device which prevents the fixed part and the movable part from being separated is arranged between the fixed part (1) and the movable part (2), and a compressed spring (4) is arranged between the fixed part (1) and the movable part (2); the top head further comprises a device used for limiting the rising distance of the movable part (2); an automatic coffee grounds scraping device is arranged on the brewing device. According to the brewing unit of the coffee maker, regardless of the more or less amount of added coffer powder, the top head can guarantee that the coffee powder is subjected to constant pressure in brewing and the compaction degree is identical, and the brewing device of the brewing unit can scrape coffee grounds automatically.

Description

technical field [0001] The invention relates to a component of a coffee machine, in particular to a brewing unit of the coffee machine. Background technique [0002] The brewing unit of the coffee machine is the core component used by the coffee machine to brew coffee. It is also called the brewing core in the industry. It generally includes a head fixed on the coffee machine bracket, a lifting mechanism installed on the bracket and a Brewer, the brewer is equipped with a brewing cavity with an opening facing upwards, and a lower filter plate is installed in the brewing cavity; an upper filter is fixed at the bottom of the top head, and a liquid outlet pipe is arranged inside the top head, and a liquid outlet pipe is generally set at the outlet of the liquid outlet pipe. hose, and in the brewer, below the lower filter plate, there is a water inlet pipe communicating with the brewing chamber. [0003] The working principle of the brewing unit in the prior art is that when th...

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Problems solved by technology

[0004] The brewing unit of the prior art has the following defects: since the position of the plug is fixed, in order to ensure the sealing, the rising distance of the lifting mechanism, that is, the upper limit position of the brewing device, is also set, which causes a dilemma, that is, every It is difficult to control the amount of powder added at a time. If there is less coffee powder, it is possible that the coffee powder on the lower filter plate does not touch the upper filter at the top during brewing and cannot be compacted. If there is more coffee powder, the upper filter The coffee powder and the lower filter plate are under too much pressure from the upward and downward directions of the coffee powder. This will cause damage to the plug and the brewer for a long time, and even the brewer cannot rise to the set brewing station due to too much coffee powder. The brewer cannot be closed; in other words, because the amount of powder added each time cannot be consistent, the degree of compaction of the coffee powder when brewing is also difficult to be uniform, which will inevitably affect the brewing taste and quality of coffee; moreover, each time After the coffee is discharged, there will always be a part of the coffee residual liquid accumulated in the end of the liquid outlet pipe and the liquid outlet hose due to negative pressure and cannot be discharged. In the coffee cup, they are mixed with each other, which affects the taste of the newly brewed coffee; moreover, after the coffee is brewed, a lifting device is needed to pull down the brewer to reset, so as to remove the coffee powder residue and add new coffee powder for the next brewing, However, since the brewing chamber is sealed during the coffee brewing process, the process of the lifting device pulling down the brewer is relatively slow and laborious, and it is difficult to pull it apart. The unbalanced pull-down force, which is sometimes large and sometimes small, will affect the stability and service life of the lifting device itself. Also can cause influence; Moreover, after coffee brewing is finished, the coffee powder residue that is compressed by upper strainer stays in the brewer, and the brewer of prior art lacks the device of automatic scraping residue again, so need to brewer from coffee machine It is troublesome and laborious to clean the bracket after it is removed

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