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Patent Searching and Data


Title:
WATER PURIFYING DEVICE
Document Type and Number:
Japanese Patent JPH09131505
Kind Code:
A
Abstract:

To provide a water purifying device which shows a high purifying effect even from the time when the device is installed and its operation is started and in which any clogging is hardly caused and the basic purifying capacity of which can be maintained for a long period by providing a first filtration means that contains a granular filter medium having large void diameters among the granules and a second filtration means that is used for further filtering water filtered with the first filtration means and contains another granular filter medium having small void diameters among the granules, and circulating the water.

In this device, a first filtration means 20 contains a granular filter medium 24 having large void diameters among the granules and a second filtration means 21 contains another granular filter medium 25 having small void diameters among the granules. A return pipe 16 extending from a bathtub 15 is connected to the suction side 18 of the circulation pump 17 and the delivery side 19 of the circulation pump 17 is connected to the bathtub 15 through the first filtration means 20, the second filtration means 21 and a going pipe 22. At this time, dispersed matter such as human dirt can be removed by the granular filter medium 24 having large void diameters among the granules in the first filtration means 20, however, other dispersed matter such as general bacteria or particulate matter can not be removed by the filter medium 24. The latter dispersed matter is removed by the filter medium 25 having small void diameters among the granules in the filtration means 21 placed subsequently to the filtration means 20. Thus, the small size dispersed matter and large size dispersed matter in the bathtub 15 are separately filtered off in two stages.


Inventors:
FURUTA SATOSHI
OZAKI YUKINORI
KAWAI YU
OKETA TAKEMI
Application Number:
JP1995000290969
Publication Date:
May 20, 1997
Filing Date:
November 09, 1995
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
A47K3/00; B01D21/30; B01D24/00; B01D24/38; B01D29/60; B01D29/88; B01D35/027; C02F1/32; C02F1/52; E04H4/00; E04H4/12; (IPC1-7): B01D35/027; A47K3/00; B01D21/30; B01D24/00; B01D29/60; C02F1/32; C02F1/52; E04H4/12
Attorney, Agent or Firm:
Tomoyuki Takimoto (1 person outside)