Head of coffee maker brewing unit

Abstract

The invention discloses a head of a coffee maker brewing unit. A liquid discharging pipe is arranged in the head. The head comprises a fixed part (1) and a movable part (2), wherein an upper filter screen (3) is fixed on the movable part (2); the fixed part (1) and the movable part (2) are nested; a limiting device for preventing the fixed part (1) from being separated from the movable part (2) is arranged between the fixed part (1) and the movable part (2); and a pressure spring (4) is arranged between the fixed part (1) and the movable part (2). The head further comprises a device for limiting a rising distance of the movable part (2). By the head, the constant pressure of coffee powder and the consistent degree of compaction can be ensured regardless of the amount of the coffee powder during brewing.

Description

technical field [0001] The invention relates to a component of a coffee machine, in particular to a plug of a brewing unit of a 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...

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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 top is fixed, in order to ensure the sealing, the rising distance of the lifting mechanism, that is, the upper limit position of the brewer is also The setting is good, which creates a dilemma, that is, it is difficult to control the amount of powder added each 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 when brewing. Therefore, it cannot be compacted, and if there are too many coffee powders, the pressure on the upper filter and the lower filter plate in the upward and downward directions of the coffee powder is too large, which will cause damage to the plug and the brewer in the long run, and even cause excessive coffee powder. The brewer simply cannot rise to the set brewing station and the brewer cannot be closed; It will affect the brewing taste and quality of the coffee; moreover, after each discharge of coffee, there will always be a part of the coffee residual liquid accumulated in the end of the liquid outlet pipe and the liquid discharge hose due to the negative pressure, which cannot be discharged, and this part of the residual liquid stays in the The pipe cools and deteriorates, and the next time the coffee is picked up, it will fall into the coffee cup and mix with each other, which affects the taste of the newly brewed coffee; moreover, after the coffee is brewed, a lifting device is required to pull down the brewer to reset it, so as to clean it. Coffee powder residue and adding new coffee powder are convenient for the next brewing. However, because 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 pull-down force is not balanced. , Big and small will also affect the stability and service life of the lifting device itself

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