Liquid purification or separation – Automatic control – Thermal
Patent
1991-09-09
1992-11-03
Silverman, Stanley S.
Liquid purification or separation
Automatic control
Thermal
210266, 210282, B01D 35147
Patent
active
051600382
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to a novel water purifying cartridge, a water purifying apparatus using the water purifying cartridge, which is mounted on a cock of water pipe in order to purify raw water, and a water purifying apparatus including a mechanism for preventing the inflow of a hot water.
PRIOR ART
In recent years, pollution of service water, etc. caused by various kinds of organics and inorganics is becoming a serious problem. Many causes can be considered for it, such as for example, increased pollution of the source of public water supply, deterioration of water supply tanks and water piping which can be observed in tall houses, high-rise buildings, etc. Reflecting such situation, in order to obtain tasty and safe water, various kinds of small-sized water purifying apparatus are used in general at home, office, restaurant, etc., as handy service water processing devices.
The service water processing devices usually include a water processing material or materials such as activated carbon, ion exchange resin, separation- and filtration membranes, and owing to these service water processing materials, there can be obtained such processing function of service water as deodorization, cleaning, removal of bacteria, softening of water, etc.
The service water processing device (water purifying apparatus) of the type mentioned above is required to be periodically exchanged in order to maintain its processing performance in a high level for a long time. As a water purifying apparatus which can be easily exchanged, there are known, among others, ones in which the processing material itself is contained in a cartridge (Japanese Patent Early Laid-open Publication No. Sho 59-76514, Japanese Patent Early Laid-open Publication No. Sho 60-190206, Japanese Utility Model Early Laid-open Publication No. Sho 49-127053, Japanese Utility Model Early Laid-open Publication No. Sho 55-167412, Japanese Utility Model Publication No. Sho 57-60880, etc.).
One known example of the above-mentioned purifying apparatus is a cock mount type purifying apparatus in which the apparatus body itself is directly mounted on a cock (service water pipe) through an arm-like water inlet member adapted to introduce a raw water into the apparatus from a water service supply.
Such generally used water purifying apparatus is, in some cases, mounted on a cock which can supply both cool and hot water.
However, since the cock is usually located at an upper position of a sink (a basin or receptacle in a kitchen, connected with a water supply and a drainpipe), an upper space, particularly a generally central portion at that, is occupied by the body of the water purifying apparatus. This is inconvenient, indeed, for housewives, etc. who are usually required to do such daily work as washing plates, dishes, cups, knives and forks, etc. in the sink.
Further, since there is no consideration given to the conventional water purifying apparatus for preventing the inflow of a hot water, it involves such problems as that a hot water flows into the body of the water purifying apparatus when a hot water cock is opened by mistake and as a result, residual chlorines, micro-organics, hardness components, etc. contained in a service water which were once attracted to an activated carbon, for example, is removed therefrom and eluted to the purified water side with the result that the purified water presents unfavorable smell and taste. At the same time, it causes deterioration of separation- and filtration membranes such as hollow fiber filtration membranes. This gives rise to another problem that the time required for exchanging the water purifying cartridge is shortened.
In order to solve the above-mentioned problems, an improved water purifying cartridge is demanded.
It is therefore a first object of the present invention to provide an improved water purifying cartridge, i.e., a water purifying cartridge which is compact, excellent in water purifying ability and easy to be exchanged.
A second object of the present invention is to provide a
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Fujimura Susumu
Harada Takashi
Higashiyama Masahide
Tokita Hidetoshi
Nessler Cynthia L.
Silverman Stanley S.
Ube Industries Ltd.
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