Stirrer of machine for making liquid or semi-liquid products and machine comprising stirrer

Abstract

The invention relates to a stirrer (1) of a machine for making liquid or semi-liquid products, comprising a rotary body (2) which is housed coaxially in a batch freezer cylinder (3) to rotate about its central axis (A) and which is provided with a plurality of vanes (5) each provided with at least one scraping member (6) for scraping the cylindrical inside wall (7) of the batch freezer cylinder (3); each scraping member (6) comprises a blade (10) and a supporting element (11) for supporting the blade (10); each blade (10) has, on one side of it, a scraping profile (13), disposed substantiallyin contact with the cylindrical inside wall (7) of the batch freezer cylinder (3) and, on the opposite side of it, a coupling profile (14) for coupling it to the respective supporting element (11) anddisposed along a longitudinal peripheral edge (15) of the supporting element (11) itself; a longitudinal groove (16) is undercut along the aforementioned edge (15) and the coupling profile (14) is removably shape-fitted therein.

Description

technical field [0001] The invention relates to a mixer for a machine for making liquid or semi-liquid products. [0002] More specifically, by way of non-limiting example, this description refers to a machine for making and dispensing ice cream. Background technique [0003] In such machines, what forms the heart of the machine is the cylinder known in the trade as a batch freezing cylinder. [0004] In practice, this part takes the form of a metal cylinder with cooling means distributed around the outside of its side walls (or within its side walls) and designed to reduce the temperature inside the cylinder in order to cool the basic product contained in it, making the finished product (ice cream). [0005] Inside the cylinder, the machine is equipped with a powered agitator that not only continuously mixes the base product to make the finished ice cream as smooth as possible, but at the same time advances the finished ice cream towards the dispensing nozzle. [0006] O...

AI Technical Summary

Problems solved by technology

[0015] A disadvantage of this solution is that replacing worn blades with new ones is a particularly laborious and time-consuming task

[0016] Another disadvantage is the cost of the parts, specifically meaning that once the blade loses its scraping effect, the entire scraping attachment needs to be replaced, or better yet sharpened if possible

[0017] Yet another disadvantage is that, depending on the necessary use of the machine over the next few months, it may sometimes be necessary to use blades of different thickness and nature; also in this case, removing the blade is not an easy task

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