GB2376648A - Paper filter for centrifugal juice extractors - Google Patents

Abstract

A disposable paper filter for a centrifugal juicer is adapted to fit inside the centrifuge bowl. The paper has a base containing a hole 3 through which components (8, fig 3) of the juicing mechanism can pass, and a sidewall 2. Ideally the paper also has tabs for ease of holding and removing the used paper.

Description

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Filter Membrane for Centrifugal Juice Extractors This invention relates to a filter membrane for centrifugal juice extractors.

Centrifugal juice extractors are well known devices which extract juice from appropriate solid material (particularly fruits and vegetables) by first turning the material into pulp and then spinning this pulp at such a speed that the juice is caused to be separated from the fibrous material. The most important features of the juice extractor for the ourposes of this patent application are the component that separates the juice from the pulp (the centrifugal basket) and the component that turns the solid material into pulp (the cutter plate). The centrifugal basket is so shaped that it contains pulp on its inside surface whilst rotating, but the surface against which the pulp is held is porous and so allows juice to pass through the surface under centrifugal force. The cutter plate has an abrasive surface which, when brought into contact with appropriate solid material and whilst spinning at an appropriate speed, transforms the solid material into pulp.

Centrifugal juice extractors are difficult to clean, particularly because the centrifugal basket becomes clogged up with pulp.

According to the present invention a disposable porous paper membrane is inserted into the centrifugal basket, and is held in place under the cutter plate, such that it prevents pulp from coming into direct contact with the basket, and may be used to remove the pulp after the juice extracting process has been completed.

A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawing in which :- Figure 1 shows in perspective, the formed filter bag Figure 2 shows in perspective, the tab detail 1 of the filter bag Figure 3 shows in cross-section a schematic diagram of the assembled lid, basket, cutter plate, cutter mount and collecting body.

Referring to the drawing, the filter bag comprises a piece of die-cut paper, which is formed into a shape consisting of a flat circular disc, having corrugated sidewalls 2 formed on its circumference. The filter paper 10 is placed inside the rotating basket 6, covering its base and sidewall, and the cutter mount 8, incorporating the cutter plate 11, is fixed on top of the filter bag but with a small gap at point 9 for the filter bag to fit underneath, such that it is not torn when the cutter mount is clamped down. The mounting of the basket, cutter mount and filter paper is concentric. The tab detail 1 and 4 is created to aid in the task of taking the filter bag out of the rotating basket. The central part of the disc 3 is cut out and also has tabs formed on its edge. The cutter mount offers protection from spinning pulp for the central section of the filter paper during the juice extracting process. Component 5 is the lid of the juice extractor and component 7 is the collecting body, these components are fixed during the juice extracting process.

Claims (4)

1. Claims 1. A paper filter bag that covers the base and sidewall of the rotating basket of the centrifugal juice extractor.
2. 2. A paper filter bag described in 1, with tab details formed onto its edges, such that it may be easily taken out of the basket.
3. 3. A paper filter bag described in 1, with the central section cut out, such that other components within the juicer may pass through the bag without causing the bag to tear.
4. 4. A mounting method for the filter bag described in 1, in which the central section of the filter paper is protected from pulp during motion.