FR2557807A1 - Filter device for potable water intended for food - Google Patents

Abstract

It is characterised by the combination of a prefiltration 1, 2 supplemented by a bacteriological filtration 5, 6, 7, 8 with a storage vessel and micropump 3 accelerating the flow of the fluid released by the microimpurities. It is intended preferably for domestic use in order to reduce the filtration times while ensuring an extremely thorough bacteriological purification.

Description

 Filter device for drinking water intended for food.

 It is intended primarily for domestic use in order to reduce filtration times while ensuring extremely advanced bacteriological purification.

 In known devices based on ceramics or others, filtration results from a physical effect or a mechanical action by virtue of which the largest particles stop at the surface while the finest penetrate further into the filter layers and are retained by the capillary interstices of the porous bodies used for the operation.

This inevitably resulted in rapid fouling of the spark plugs or the like and a slowing down of the passage of the fluid. Filter surfaces had to be constantly cleaned to maintain a minimum flow rate.

 The device according to the invention eliminates these drawbacks and makes it possible to obtain rapid filtration, to eliminate the constant cleaning of ceramics or porous filtering surfaces, while obtaining a rapid flow rate of a fluid completely purified by stopping bacteria and which retains all of its organoleptic and taste qualities.

 It is characterized by the combination of a pre-filtering supplemented by a bacteriological filtering with reservoir and micro pump accelerating the passage of the fluid freed from micro-impurities.

In the accompanying drawings, given by way of nonlimiting example, of one of the embodiments of the subject of the invention
Figure 1 shows the device as a whole.

 Figures 2 and 3 show in section and in elevation an industrial application of this device.

 The device, Figure 1, consists of a capacity 1 receiving the raw water and containing a sieve pre-filter to stop large impurities.

 This very cheap fabric or other filter is interchangeable and simplifies cleaning. This pre-filter is interchangeable and removable.

 The pre-filtered water is taken up by a micro-pump 3, and sent to capacity 4 inside which the porous filter materials or candles 5, 6, 7, 8 are placed, stopping bacteria and microorganisms .

 These filter ceramics are cleanable, interchangeable and removable.

 The porcelain will clog very little or very slowly and will allow water to pass quickly, which will double the volumes treated in reduced times.

 This will immediately obtain the flow rates requested by the user by producing bacteriologically pure water.

 This tank is preferably provided with a safety pressure switch and a pressure gauge indicating the degree of clogging. The hopper 11 ensures the flow of pure water.

 This filter can be mounted continuously or by unit not connected to the running water supply.

 Pre-filter 2 can be activated carbon to eliminate bad tastes or bad smells. Depending on the case, it may contain active agents or any other product which can be used depending on the applications or the regimes of use.

 The autonomous filter unit, Fig 2, 3, is formed by the same cooperation of the basic elements.

 It includes a polluted or domestic raw water tank 12.

 The pre-filter 13 opens through the conduit 14 into the capacity containing the micro-pump 15 which sends it under pressure into the filtering capacity 16 retaining bacteria and microorganisms.

 A glass or carafe receiver 17 is integrated in the casing and supported by the base 18.

 These domestic filtering stations can be all capacities and include a number of pre-filters and ceramic or porous filtering bodies adapted to the installations.

 They can also have various dimensions, for domestic use for example, delivering one liter in a few seconds or several liters depending on the capacity of the tank.

LJn household appliance with one liter capacity
can be connected to a continuous power supply leading into
the reservoir 12 with automatic shutdown by any known means.

This is why the shapes, dimensions and arrangements
different elements may vary within the limits of the equi
valuable, like the materials used to make them
cation, without changing for that, the general conception of
the invention which has just been described.

Claims (3)

 10 Filter device for drinking water intended for household food making it possible to reduce filtration times, increase the volumes of treated water while ensuring complete bacteriological purification without removing from the fluid its organoleptic and gustatory qualities, while the pre- filtering eliminating the frequent cleaning of porous filtering materials, characterized by the combination of a pre-filter with interchangeable element (2), with reservoir (1), micro-pump (3) pulsing the pre-filtered fluid in the capacity ( 4) containing the ceramics (5, 6, 7, 8) or cleanable and interchangeable filter candles.  20 Device according to claim 1 characterized in that the pre-filter (2) supplies the pump (3) of the fluid freed from microorganisms, while bacteria and microorganisms are filtered by ceramic candles in the capacity (4) preferably provided with a safety pressure switch (9) and a pressure gauge indicating the degree of clogging (10).  30 Device according to Claim 1, characterized in that an autonomous filtering unit according to one of the applications of the device consists of a raw water tank (12), a removable pre-filter (13), a micropump ( 15), a tank of water filtered by a ceramic candle (16) and a mobile collecting container (17).