Device for degerminating and filtering water passing through a sanitary device

• US 6,328,884 B1
• Filed: 05/17/2000
• Issued: 12/11/2001
• Est. Priority Date: 08/22/1997
• Status: Expired due to Fees

• Current Assignee: Hansa Metallwerke
• Original Assignee: Hansa Metallwerke AG (Paasikivi Family)
• Inventors: Kunkel, Horst
• Primary Examiner(s): Lithgow, Thomas M.
• Application Number:
  US09/486,195
• Time in Patent Office: 573 Days
• Field of Search: 210/748, 210/256, 210/198.1, 210/407, 210/205, 210/259, 422/24, 422/186.3
• US Class Current: 210/198.1
• CPC Class Codes: B01D 29/232 with corrugated, folded or wound sheets
• CPC Class Codes: B01D 29/27 Filter bags
• CPC Class Codes: C02F 1/001 Processes for the treatment of water whereby the filtration technique is of importance C02F1/44 takes precedence; construction of filters in general B01D24/00 - B01D41/00
• CPC Class Codes: C02F 1/325 Irradiation devices or lamp constructions
• CPC Class Codes: C02F 2201/3223 Single elongated lamp located on the central axis of a turbular reactor
• CPC Class Codes: E03C 1/04 Water-basin installations specially adapted to wash-basins or baths valves, faucets, mixing valves, taps F16K
• CPC Class Codes: E03C 2201/40 Arrangement of water treatment devices in domestic plumbing installations

Abstract

The invention relates to a device for degerminating and filtering water passing through a sanitary appliance. The device includes a housing through which water can flow, and a filtering device located inside of the housing. The filtering device has a backup cage and a filter cloth bag connected thereto, and essentially surrounds the entire luminous element of a UV lamp. Both the backup cage and the filter cloth bag are made from a plastic material which allows the radiation emitted by the UV lamp to pass through it or which conducts the radiation in the manner of a light conductor.

Claims

1. Device for sterilizing and filtering water flowing through a sanitary appliance, having

a) a housing, which comprises an inlet and an outlet for the water;

b) a filtering apparatus, which is disposed in the housing and through which the water travelling between the inlet and the outlet of the housing has to pass;

c) a UV lamp having a luminous element (14), which is disposed inside the housing and the radiation of which is directed towards the water flowing through and towards the filtering apparatus;

characterized in that the filtering apparatus (30) comprises;

d) a filter cloth bag (34) made of knitted or woven plastic material which transmits UV light;

e) a supporting cage (31), which lends the filter cloth bag (34) a specific shape and is likewise made of a plastic material which transmits UV light;

wherein

f) the filtering apparatus (30) surrounds the luminous element (14) of the UV lamp (12) and

 

the filter cloth bag (34) is composed of individual webs (34a, 34b ), which at their edges directed towards one another are connected in a two-dimensional manner to one another in such a way that the end faces are exposed and point towards the UV lamp (12).

2. Device according to claim 1, characterized in that the filter cloth bag (34) is folded a plurality of times in radial direction.

4. Device according to claim 1, characterized in that the supporting cage (31) comprises a plurality of radially aligned ribs (32), which at one end are connected in a cupola-like manner to one another and against the radially inner contours of which the filter cloth bag (34) is supported.

5. Device according to claim 4, characterized in that the ribs (32) have radially inner contour which, at least over a specific distance, extends parallel to the luminous element (14) of the UV lamp (12).

6. Device according to one of claims 1 to 2, characterized in that the supporting cage is formed from rod-like material.

7. Device according to claim 1, characterized in that the supporting cage is formed from plastic ropes, which are stretched over a part situated in the housing.

8. Device according to claim 7, characterized in that the part situated in the housing is the luminous element of the UV lamp.

9. Device according to claim 1, characterized in that the filter cloth bag (34) is fastened to the supporting cage (31) by means of fastening clips (35).

3. Device for sterilizing and filtering water flowing through a sanitary appliance, having

a) a housing, which comprises an inlet and an outlet for the water;

b) a filtering apparatus, which is disposed in the housing and through which the water travelling between the inlet and the outlet of the housing has to pass;

c) a UV lamp having a luminous element (14), which is disposed inside the housing and the radiation of which is directed towards the water flowing through and towards the filtering apparatus;

characterized in that the filtering apparatus (30) comprises;

d) a filter cloth bag (34) made of knitted or woven plastic material which transmits UV light;

e) a supporting cage (31), which lends the filter cloth bag (34) a specific shape and is likewise made of a plastic material which transmits UV light;

wherein

f) the filtering apparatus (30) surrounds the luminous element (14) of the UV lamp (12) and

g) the supporting cage (31) comprises a plurality of radially aligned ribs (32), which at one end are connected in a cupola-like manner to one another and against the radially inner contours of which the filter cloth bag (34) is supported.