EP0331192A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method and apparatus for deodorizing toilet room
Assignee: CESSIONE;SENICHI MASUDA
•
Filing: 1989-03-03
•
Granted: —
•
Expires: 2009-03-03
Abstract
Abstract According to the present invention there is provided a toilet room deodorizing method wherein an offensive odor emitted from excrements in a toilet bowl is introduced directly into a deodorizing apparatus (1) at a predetermined air volume, then is mixed with a predetermined concentration of ozone and passed through a catalyst bed (8) for efficient deodorizing treatment, thereby preventing the offensive odor from being diffused into the toilet room and permitting this deodorizing treatment stably over a long period, as well as a toilet room deodorizing apparatus (1) wherein an ozone generator (5), a catalyst bed (8) and a fan (10) are provided within an air passage (4), whereby offensive odor components in a toilet bowl can be introduced for deodorization into the said air passage (4) within a predetermined time, and the entire apparatus can be constructed compactly and disposed in a toilet room without causing any inconvenience.
Inventors
- 👤 Sadao Terui
- 👤 Kunio Sano
- 👤 Kazuyoshi Nishikawa
- 👤 Yoshiyuki Noma
- 👤 Akira Inoue
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 22:07
CPC Classifications
E; E03; E03D; E03D9/00; E03D9/04; E03D9/05; E03D9/052
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
84 words
A method for deodorizing a toilet room, comprising sucking offensive odor components generated in a toilet bowl into a deodorizing apparatus together with the air in the toilet bowl at an air volume of 7 to 35 times the internal volume of the toilet bowl per minute, then mixing them with ozone to adjust the ozone concentration to a value in the range of 0.05 to 2 ppm, and passing the mixture through a catalyst bed to oxidize and decompose said offensive odor components.
Claim 2
Independent Claim
84 words
A method for deodorizing a toilet room, comprising sucking offensive odor components generated in a toilet bowl into a deodorizing apparatus together with the air in the toilet bowl at an air volume of 7 to 35 times the internal volume of the toilet bowl per minute, then mixing them with ozone to adjust the ozone concentration to a value in the range of 0.05 to 2 ppm, and passing the mixture through a catalyst bed to oxidize and decompose said offensive odor components.
Claim 3
Dependent Claim
32 words
A method for deodorizing a toilet room according to Claim 1, wherein the suction of the air and the offensive odor components is started when a person sits on the toilet bowl.
Claim 4
Dependent Claim
42 words
A method for deodorizing a toilet room according to Claim 1 or 2, wherein the deodorization is continued for not shorter than one minute after a person in the toilet room has left the toilet bowl and thereafter the suction is stopped.
Claim 5
Independent Claim
42 words
A method for deodorizing a toilet room according to Claims 1 to 3, wherein undecomposed offensive odor components which have passed through said catalyst bed are adsorbed and removed in an adsorbent layer provided on a downstream side of the catalyst bed.
Claim 6
Independent Claim
37 words
A method for deodorizing a toilet room according to Claims 1 to 4, wherein the offensive odor components which have been adsorbed by part of said catalyst bed are decomposed with surplus ozone which is supplied subsequently.
Claim 7
Independent Claim
149 words
An apparatus for deodorizing a toilet room by decomposing offensive odor components using ozone, wherein an air passage providing communication between an intake port and an exhaust port is formed, said intake port being in communication with the interior of a toilet bowl; an ozone generator is provided within said air passage on said intake port side; on a downstream side of said ozone generator there are formed a mixing chamber for mixing offensive odor components and ozone together as well as a catalyst bed contiguous to said mixing chamber to decompose the offensive odor components and unreacted ozone; a fan for forming a current of air is disposed in a suitable position within said air passage, said components being received in a casing by opening said intake and exhaust ports; and there is further provided a control mechanism for controlling ON/OFF operation of said fan and ozone generator.
Claim 8
Independent Claim
149 words
An apparatus for deodorizing a toilet room by decomposing offensive odor components using ozone, wherein an air passage providing communication between an intake port and an exhaust port is formed, said intake port being in communication with the interior of a toilet bowl; an ozone generator is provided within said air passage on said intake port side; on a downstream side of said ozone generator there are formed a mixing chamber for mixing offensive odor components and ozone together as well as a catalyst bed contiguous to said mixing chamber to decompose the offensive odor components and unreacted ozone; a fan for forming a current of air is disposed in a suitable position within said air passage, said components being received in a casing by opening said intake and exhaust ports; and there is further provided a control mechanism for controlling ON/OFF operation of said fan and ozone generator.
Claim 9
Dependent Claim
81 words
An apparatus for deodorizing a toilet room according to Claim 6, wherein a seat having an opening portion on the bottom side thereof is disposed above the toilet bowl while a gap is formed between the bottom of said seat and the upper surface of the toilet bowl, said opening portion extending along part or the whole of the upper edge of the toilet bowl, and a side edge portion of the toilet bowl is in communication with said intake port.
Claim 10
Dependent Claim
98 words
An apparatus for deodorizing a toilet room according to Claim 6, wherein a seat having an opening portion on the bottom side thereof is disposed above the toilet bowl while a gap is formed between the bottom of said seat and the upper surface of the toilet bowl, said opening portion extending along part or the whole of the upper edge of the toilet bowl, said seat being mounted to the toilet bowl through a hollow pivot shaft so that it can be opened and closed, and said hollow pivot shaft being in communication with said intake port.
Claim 11
Independent Claim
38 words
An apparatus for deodorizing a toilet room according to Claims 6 to 8, wherein a hollow pipe is connected at one end thereof to said intake port, the opposite end thereof facing the interior of the toilet bowl.
Claim 12
Dependent Claim
51 words
An apparatus for deodorizing a toilet room according to Claim 9, wherein said hollow pipe is formed in the shape of a hook using a hard material, and the whole of the casing is supported by bringing said hook-like hollow pipe into engagement with the upper edge of the toilet bowl.
Claim 13
Dependent Claim
35 words
An apparatus for deodorizing a toilet room according to Claim 9, wherein the opposite end of said hollow pipe is connected to the seat and faces the interior of the toilet bowl through the seat.
Claim 14
Independent Claim
65 words
An apparatus for deodorizing a toilet room according to Claims 6 to 11, wherein an overflow line is provided in a flush tank communicating with the interior of the toilet bowl, said overflow line providing communication between the interior of the toilet bowl and an upper space of said flush tank, said upper space of the flush tank being in communication with said intake port.
Claim 15
Independent Claim
101 words
An apparatus for deodorizing a toilet room according to Claims 6 to 12, wherein in said control mechanism there are provided a light emitting element for emitting light upwardly of the seat and a light sensing element for sensing light reflected from a human body; at least said fan and ozone generator in the deodorizing apparatus are operated when said light sensing element senses the reflected light; and a timer is connected to said light sensing element to stop the operation of at least said fan and ozone generator upon lapse of a certain time after extinguishment of the reflected light.
Claim 16
Dependent Claim
46 words
An apparatus for deodorizing a toilet room according to Claim 13, including a sensor comprising a light emitting element which emits light toward the legs of a person who sits on the toilet bowl and a light sensing element which senses light reflected from said legs.
Claim 17
Independent Claim
87 words
An apparatus for deodorizing a toilet room according to Claims 6 to 12, wherein a seat pressure sensor is attached to the upper surface of the toilet bowl or to the seat to operate at least said fan and ozone generator in the deodorizing apparatus when a person sits on the seat, and a timer is connected to said seat pressure sensor to stop the operation of at least said fan and ozone generator upon lapse of a certain time after the person has left the seat.
Claim 18
Dependent Claim
46 words
An apparatus for deodorizing a toilet room according to claim 13 or 14, wherein a solenoid valve for the flush of wash water is connected to said light sensing element through said control mechanism, said solenoid valve being opened after the person has left the seat.
Claim 19
Dependent Claim
44 words
An apparatus for deodorizing a toilet room according to Claim 15, wherein a solenoid valve for the flush of wash water is connected to said seat pressure sensor through said control mechanism, said solenoid valve being opened after the person has left the seat.
Claim 20
Independent Claim
34 words
An apparatus for deodorizing a toilet room according to Claims 6 to 17, wherein an adsorbent layer for adsorbing undecomposed offensive odor components is provided on the exhaust port side of said catalyst bed.
Claim 21
Independent Claim
22 words
An apparatus for deodorizing a toilet room according to Claims 6 to 18, wherein said catalyst bed is formed by honeycomb cells.
Claim 22
Dependent Claim
58 words
An apparatus for deodorizing a toilet room according to Claim 19, wherein the number of said honeycomb cells is 100 to 400 cells per square inch, and said catalyst has a specific surface area not smaller than 50 m²/g and a contact area in the range of 0.01 to 0.35 m² per an air volume of 1 m³/hr.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.