Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Transparent
Reexamination Certificate
2002-10-02
2004-07-20
Lawrence, Frank M. (Department: 1724)
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Transparent
C210S104000, C210S205000, C222S190000
Reexamination Certificate
active
06764594
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a reservoir for a reverse osmosis type water filtering system and the reservoir is connected with a pump and a float control system so as to provide clean water more efficiently.
BACKGROUND OF THE INVENTION
A conventional reverse osmosis type water filtering system is shown in
FIGS. 1 and 2
and generally includes a plurality of filters
10
through which the pipe water is provided and the water is filtered to be clean water and then is sent to a reservoir
20
which is shown in FIG.
3
. The filtered water in the reservoir
20
can be provided via a faucet
30
by difference of pressure in the reservoir
20
. The reservoir
20
is a metal tank
21
and a rubber made film
22
is located in the tank
21
so as to separate the interior of the tank
21
into an upper space and a lower space. An air inlet
23
is connected to a compressor so as to maintain a predetermined pressure in the lower space and an water outlet
24
is connected to a top of the tank
21
so as to deliver the filtered water to the faucet
30
. When the switch of the faucet
30
is pushed, a pressure difference is formed in the tank
21
and the water in the upper space is pushed by the flexible rubber made film
22
via the water outlet
24
. The metal tank
21
could be rusted after a long period of time of use and the rubber made film
22
could be slightly damaged become sticky at its surface and small particles of the rubber are spread in the filtered water. The rubber made film
22
is adhered to the inside of the tank
21
and could be broken after being applied by stress which is resulted from the deformation of the film
22
. Once the seal between the rubber made film
22
and the inside of the tank
21
is destroyed, the compressor has to work informally to maintain the pressure in the lower space.
The present invention intends to provide a water filtering system that has a pump for pumping the clean water and a float control system controls the volume of the entry of the clean water in the tank for storing the clean water.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided a reservoir for a water filtering system which includes filters provided with pipe water so as to generate filtered water which is sent to the reservoir. The reservoir is a tank having a separate board so as to define an upper space and a lower space in the tank. A water level control system is connected to the tank and located in the upper space so as to control the volume of the filtered water entering the upper space. An aperture is defined through the separate board and a pipe is connected between the aperture and a pump. An outlet defined through a wall of the tank and a pipe connected with the pump is engaged with the outlet and adapted to be connected to a faucet. A low level control device is connected to the separate board so as to shut off the pump at a predetermined level of the filtered water. A water quality improvement device is received in the upper space of the tank.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
REFERENCES:
patent: 5266215 (1993-11-01), Engelhard
patent: 5683576 (1997-11-01), Olsen
patent: 5855795 (1999-01-01), Chang
patent: 6013189 (2000-01-01), Burris
patent: 6090281 (2000-07-01), Buckner
patent: 6139726 (2000-10-01), Greene
patent: 6146524 (2000-11-01), Story
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