U.S. patent application number 10/599951 was filed with the patent office on 2007-08-30 for air venting system.
Invention is credited to Kurt Sture Birger Ericson.
Application Number | 20070199948 10/599951 |
Document ID | / |
Family ID | 32320805 |
Filed Date | 2007-08-30 |
United States Patent
Application |
20070199948 |
Kind Code |
A1 |
Ericson; Kurt Sture Birger |
August 30, 2007 |
Air Venting System
Abstract
An air venting system includes a body defining an inner chamber;
and an odor absorbing member having an inlet surface and an exhaust
surface, whereby the system is adapted for defining a gas flowing
path between the inlet surface and the outlet surface of the odor
absorbing member. The flowing path in the odor absorbing member has
at least two opposite flow path directions.
Inventors: |
Ericson; Kurt Sture Birger;
(Schilde, BE) |
Correspondence
Address: |
HOVEY WILLIAMS LLP
2405 GRAND BLVD., SUITE 400
KANSAS CITY
MO
64108
US
|
Family ID: |
32320805 |
Appl. No.: |
10/599951 |
Filed: |
April 6, 2005 |
PCT Filed: |
April 6, 2005 |
PCT NO: |
PCT/BE05/00047 |
371 Date: |
October 13, 2006 |
Current U.S.
Class: |
220/747 |
Current CPC
Class: |
B01D 50/002 20130101;
B01D 53/0431 20130101; B01D 2253/102 20130101; B01D 53/0415
20130101; B01D 2258/02 20130101; B01D 2257/90 20130101 |
Class at
Publication: |
220/747 |
International
Class: |
B65D 25/00 20060101
B65D025/00 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 14, 2004 |
GB |
0408298.8 |
Claims
1. An air venting system for a gas exhaust conduit of a waste
containing system selected from the group consisting of waste
treatment system, waste conveying system and substantially closed
waste container, said system comprising: a body defining an inner
chamber; said body having at least one inlet opening intended for
receiving gases from the gas exhaust conduit and at least one
outlet opening intended for releasing gases out of the body, and at
least one odor absorbing means placed in the inner chamber, said
odor absorbing means having: (a) an inlet surface through which gas
from the waste containing system enters into the odor absorbing
means, and (b) an exhaust surface through which gas from the waste
containing system flows out of the odor absorbing means after
flowing through at least a portion of said odor absorbing means,
whereby the system is adapted for defining a gas flowing path
between the inlet surface and the exhaust surface of the odor
absorbing means, said flowing path in the odor absorbing means
having at least a first upwards flow path portion with a first flow
direction defined by at least one vector and a second downwards
flow path portion with a second flow direction defined by at least
one vector, whereby at least one vector of the second flow
direction is opposite to a vector of the first flow direction, and
in which the odor absorbing means is placed in the inner chamber so
as to define a volume free of odor absorbing means, whereby gas
flowing from the inlet opening towards the outlet opening flows at
least partly from the inlet opening through a portion of the odor
absorbing means towards the volume free of odor absorbing means,
and through another portion of the odor absorbing means from the
volume free of the odor absorbing means towards the outlet
opening.
2. The air venting system of claim 1, in which the inner chamber is
defined by at least one wall, and in which the odor absorbing means
is placed in the inner chamber so as to define between the said at
least one wall of the chamber and the odor absorbing means a space
free of odor absorbing means but closed by said odor absorbing
means, whereby gas flows in or out said space only through the odor
absorbing means, whereby gas flowing from the inlet opening towards
the outlet opening flows at least partly from the inlet opening
through a portion of the odor absorbing means towards the volume
free of odor absorbing means, and through another portion of the
odor absorbing means from the volume free of the odor absorbing
means towards the outlet opening.
3. The air venting system of claim 1, in which the odor absorbing
means is placed in the inner chamber so as to define a volume free
of odor absorbing means, whereby gas flowing from the inlet opening
towards the outlet opening flows at least partly according to an
upwards flow path from the inlet surface of the odor absorbing
means and through a portion of the odor absorbing means towards the
volume free of odor absorbing means, and at least partly according
to a downwards path from the volume free of the odor absorbing
means through another portion of the odor absorbing means towards
the exhaust surface thereof.
4. The air venting system of claim 1, in which the inner chamber is
defined by at least one wall, and in which the odor absorbing means
is placed in the inner chamber so as to define between the said at
least one wall of the chamber and the odor absorbing means a space
free of odor absorbing means but closed by said odor absorbing
means, whereby gas flows in or out said space only through the odor
absorbing means, whereby gas flowing from the inlet opening towards
the outlet opening flows at least partly upwardly from the inlet
opening through a portion of the odor absorbing means towards the
volume free of odor absorbing means, and at least partly downwardly
through another portion of the odor absorbing means from the volume
free of the odor absorbing means towards the outlet opening.
5. The air venting system of claim 1, in which the odor absorbing
means is a charcoal containing absorbing means.
6. The air venting system of claim 1, in which the odor absorbing
means has an inlet surface and an exhaust surface, whereby gas
flowing from the inlet opening towards the outlet opening flows in
the odor absorbing means through the inlet surface and outlet the
odor absorbing means through the exhaust surface, whereby the
exhaust surface is at least greater than the inlet surface.
7. The air venting system of claim 1, in which the odor absorbing
means has an inlet surface and an exhaust surface, whereby gas
flowing from the inlet opening towards the outlet opening flows in
the odor absorbing means through the inlet surface and outlet the
odor absorbing means through the exhaust surface, whereby the
exhaust surface is greater than 1.5 times the inlet surface.
8. The air venting system of claim 1, in which the odor absorbing
means has an inlet surface and an exhaust surface, whereby gas
flowing from the inlet opening towards the outlet opening flows in
the odor absorbing means through the inlet surface and outlet the
odor absorbing means through the exhaust surface, whereby the
exhaust surface is comprised between 1.5 and 5 times the inlet
surface.
9. The air venting system of claim 1, said system comprising a
tubular body defined by a cylindrical wall and extending between a
bottom end up to a top end, a cover cooperating with the top end of
the tubular body to form a chamber extending above the top end of
the tubular body and associated with a peripheral channel extending
outlet the cylindrical wall of the tubular body, whereby the bottom
end of the tubular body defines the inlet opening, while the
peripheral channel is provided with at least one outlet opening,
and whereby the odor absorbing means is located at least partly in
the chamber.
10. The air venting system of claim 1, said system comprising a
tubular body defined by a cylindrical wall and extending between a
bottom end up to a top end, a cover cooperating with the top end of
the tubular body to form a chamber extending above the top end of
the tubular body and associated with a peripheral channel extending
outlet the cylindrical wall of the tubular body, whereby the bottom
end of the tubular body defines the inlet opening, while the
peripheral channel is provided with at least one outlet opening,
and whereby the odor absorbing means is located as least partly in
the chamber, as well as partly in the peripheral channel.
11. The air venting system of claim 1, said system comprising a
tubular body defined by a cylindrical wall and extending between a
bottom end up to a top end, a cover cooperating with the top end of
the tubular body to form a chamber extending above the top end of
the tubular body and associated with a peripheral channel extending
outlet the cylindrical wall of the tubular body, whereby the bottom
end of the tubular body defines the inlet opening, while the
peripheral channel is provided with at least one outlet opening,
and whereby the odor absorbing means is located as least partly in
the chamber, as well as partly as in the tubular body.
12. The air venting system of claim 1, said system comprising a
tubular body defined by a cylindrical wall and extending between a
bottom end up to a top end, a cover cooperating with the top end of
the tubular body to form a chamber extending above the top end of
the tubular body and associated with a peripheral channel extending
outlet the cylindrical wall of the tubular body, whereby the bottom
end of the tubular body defines the inlet opening, while the
peripheral channel is provided with at least one outlet opening,
and whereby the odor absorbing means is located as least partly in
the chamber, as well as partly as in the tubular body and at least
partly in the peripheral channel.
13. The air venting system of claim 12, in which the odor absorbing
means has the form of a body, said body having a circular groove in
which the top end of the tubular body is introduced.
14. A process for absorbing odor comprising the steps of:
exhausting gas through an outlet of a gas exhaust conduit of a
waste containing system selected from the group consisting of waste
treatment system, waste conveying system and substantially closed
waste container; and providing a system in communication with the
outlet of said gas exhaust conduit, the system comprising: a body
defining an inner chamber; said body having at least one inlet
opening intended for receiving gases from the gas exhaust conduit
and at least one outlet opening intended for releasing gases out of
the body, and at least one odor absorbing means placed in the inner
chamber, said odor absorbing means having (a) an inlet surface and
(b) an exhaust surface; further including the steps of flowing the
gas from the waste containing system through the inlet surface and
into the odor absorbing means, and flowing the gas from the waste
containing system out from the odor absorbing means through the
exhaust surface after flowing through at least a portion of said
odor absorbing means, defining a gas flowing path in said system
between the inlet surface and the exhaust surface of the odor
absorbing means; flowing said gas from the waste containing system
along said flowing path in the odor absorbing means along at least
a first upwards flow path portion in a first flow direction defined
by at least a first vector and along a second downwards flow path
portion in a second flow direction defined by at least a second
vector, whereby the second vector of the second flow direction is
oriented substantially opposite to a first vector of the first flow
direction, and placing the odor absorbing means in the inner
chamber so as to define a volume free of odor absorbing means,
further including the step of causing the flow of said gas from the
waste containing system and flowing from the inlet opening towards
the outlet opening to flow at least partly from the inlet opening
through a portion of the odor absorbing means towards the volume
free of odor absorbing means, and through another portion of the
odor absorbing means from the volume free of the odor absorbing
means towards the outlet opening, and including the step of flowing
the gas from the waste containing system through the odor absorbing
means from the inlet surface thereof to the outlet surface thereof
following at least the first flow path portion and the second flow
path portion of the odor absorbing means with an at least partial
flow in said volume free of odor absorbing means of the inner
chamber.
15. The process of claim 14, including the step of placing the odor
absorbing means in the inner chamber so as to define a volume free
of odor absorbing means, and directing gas flowing from the inlet
opening towards the outlet opening so as to flow at least partly
according to an upwards flow path from the inlet surface of the
odor absorbing means and through a portion of the odor absorbing
means towards the volume free of odor absorbing means, and at least
partly according to a downwards path from the volume free of the
odor absorbing means through another portion of the odor absorbing
means towards the exhaust surface thereof.
16. The process of claim 14, in which the inner chamber is defined
by at least one wall, and in which the odor absorbing means is
placed in the inner chamber so as to define between the said at
least one wall of the chamber and the odor absorbing means a space
free of odor absorbing means but closed by said odor absorbing
means, and including the step of flowing gas in or out said space
only through the odor absorbing means, whereby gas flowing from the
inlet opening towards the outlet opening flows at least partly from
the inlet opening through a portion of the odor absorbing means
towards the volume free of odor absorbing means, and through
another portion of the odor absorbing means from the volume free of
the odor absorbing means towards the outlet opening.
17. The process of claim 14, in which the inner chamber is defined
by at least one wall, and in which the odor absorbing means is
placed in the inner chamber so as to define between the said at
least one wall of the chamber and the odor absorbing means a space
free of odor absorbing means but closed by said odor absorbing
means, and including the step of flowing gas in or out said space
only through the odor absorbing means, whereby gas flowing from the
inlet opening towards the outlet opening flows at least partly
upwardly from the inlet opening through a portion of the odor
absorbing means towards the volume free of odor absorbing means,
and at least partly downwardly through another portion of the odor
absorbing means from the volume free of the odor absorbing means
towards the outlet opening.
18. The process of claim 14, in which the odor absorbing means is a
charcoal containing absorbing means, and including the step of
flowing gas through the charcoal containing absorbing means.
19. The process of claim 14, in which the odor absorbing means has
an inlet surface and an exhaust surface, and including the step of
flowing gas from the inlet opening towards the outlet opening such
that gas enters into the odor absorbing means through the inlet
surface and outlets the odor absorbing means through the exhaust
surface, whereby the exhaust surface is at least greater than the
inlet surface.
20. The process of claim 14, in which the odor absorbing means has
an inlet surface and an exhaust surface, and including the step of
flowing gas from the inlet opening towards the outlet opening such
that the gas enters into the odor absorbing means through the inlet
surface and outlets the odor absorbing means through the exhaust
surface, whereby the exhaust surface is greater than 1.5 times the
inlet surface.
21. The process of claim 14, in which the odor absorbing means has
an inlet surface and an exhaust surface, and including the step of
flowing gas from the inlet opening towards the outlet opening such
that the gas enters into the odor absorbing means through the inlet
surface and outlets the odor absorbing means through the exhaust
surface, whereby the exhaust surface is comprised between 1.5 and 5
times the inlet surface.
22. The process of claim 14, in which the system comprises a
tubular body defined by a cylindrical wall and extending between a
bottom end up to a top end, a cover cooperating with the top end of
the tubular body to form a chamber extending above the top end of
the tubular body and associated with a peripheral channel extending
outlet the cylindrical wall of the tubular body, whereby the bottom
end of the tubular body defines the inlet opening, while the
peripheral channel is provided with at least one outlet opening,
and whereby the odor absorbing means is located at least partly in
the chamber.
23. The process of claim 14, in which the system comprises a
tubular body defined by a cylindrical wall and extending between a
bottom end up to a top end, a cover cooperating with the top end of
the tubular body to form a chamber extending above the top end of
the tubular body and associated with a peripheral channel extending
outlet the cylindrical wall of the tubular body, whereby the bottom
end of the tubular body defines the inlet opening, while the
peripheral channel is provided with at least one outlet opening,
and whereby the odor absorbing means is located as least partly in
the chamber, as well as partly in the peripheral channel.
24. The process of claim 14, in which the system comprises a
tubular body defined by a cylindrical wall and extending between a
bottom end up to a top end, a cover cooperating with the top end of
the tubular body to form a chamber extending above the top end of
the tubular body and associated with a peripheral channel extending
outlet the cylindrical wall of the tubular body, whereby the bottom
end of the tubular body defines the inlet opening, while the
peripheral channel is provided with at least one outlet opening,
and whereby the odor absorbing means is located as least partly in
the chamber, as well as partly as in the tubular body.
25. The process of claim 14, in which the system comprising a
tubular body defined by a cylindrical wall and extending between a
bottom end up to a top end, a cover cooperating with the top end of
the tubular body to form a chamber extending above the top end of
the tubular body and associated with a peripheral channel extending
outlet the cylindrical wall of the tubular body, whereby the bottom
end of the tubular body defines the inlet opening, while the
peripheral channel is provided with at least one outlet opening,
and whereby the odor absorbing means is located as least partly in
the chamber, as well as partly as in the tubular body and at least
partly in the peripheral channel.
26. The process of claim 25, in which the odor absorbing means has
the form of a body, said body having a circular groove in which the
top end of the tubular body is introduced.
27. A waste containing system selected from the group consisting of
waste treatment system, waste conveying system and substantially
closed waste container, said waste containing system being provided
with at least one gas exhaust conduit provided with an air venting
system comprising: a body defining an inner chamber; said body
having at least one inlet opening intended for receiving gases from
the gas exhaust conduit and at least one outlet opening intended
for releasing gases out of the body, and at least one odor
absorbing means placed in the inner chamber, said odor absorbing
means having (a) an inlet surface through which gas from the waste
containing system enters into the odor absorbing means and (b) an
exhaust surface through which gas from the waste containing system
flows out of the odor absorbing means after flowing through at
least a portion of said odor absorbing means, whereby the system is
adapted for defining a gas flowing path between the inlet surface
and the exhaust surface of the odor absorbing means, said flowing
path in the odor absorbing means having at least a first upwards
flow path portion with a first flow direction defined by at least
one vector and a second downwards flow path portion with a second
flow direction defined by at least one vector, whereby at least one
vector of the second flow direction is opposite to a vector of the
first flow direction, and in which the odor absorbing means is
placed in the inner chamber so as to define a volume free of odor
absorbing means, whereby gas flowing from the inlet opening towards
the outlet opening flows at least partly from the inlet opening
through a portion of the odor absorbing means towards the volume
free of odor absorbing means, and through another portion of the
odor absorbing means from the volume free of the odor absorbing
means towards the outlet opening.
28. The waste containing system of claim 27, in which the inner
chamber of the air venting system is defined by at least one wall,
and in which the odor absorbing means of the air venting system is
placed in the inner chamber so as to define between the said at
least one wall of the chamber and the odor absorbing means a space
free of odor absorbing means but closed by said odor absorbing
means, whereby gas flows in or out said space only through the odor
absorbing means, whereby gas flowing from the inlet opening towards
the outlet opening flows at least partly from the inlet opening
through a portion of the odor absorbing means towards the volume
free of odor absorbing means, and through another portion of the
odor absorbing means from the volume free of the odor absorbing
means towards the outlet opening.
29. The waste containing system of claim 27, in which the odor
absorbing means of the air venting system is placed in the inner
chamber so as to define a volume free of odor absorbing means,
whereby gas flowing from the inlet opening towards the outlet
opening flows at least partly according to an upwards flow path
from the inlet surface of the odor absorbing means and through a
portion of the odor absorbing means towards the volume free of odor
absorbing means, and at least partly according to a downwards path
from the volume free of the odor absorbing means through another
portion of the odor absorbing means towards the exhaust surface
thereof.
30. The waste containing system of claim 27, in which the inner
chamber of the air venting system is defined by at least one wall,
and in which the odor absorbing means of the air venting system is
placed in the inner chamber so as to define between the said at
least one wall of the chamber and the odor absorbing means a space
free of odor absorbing means but closed by said odor absorbing
means, whereby gas flows in or out said space only through the odor
absorbing means, whereby gas flowing from the inlet opening towards
the outlet opening flows at least partly upwardly from the inlet
opening through a portion of the odor absorbing means towards the
volume free of odor absorbing means, and at least partly downwardly
through another portion of the odor absorbing means from the volume
free of the odor absorbing means towards the outlet opening.
31. The waste containing system of claim 27, in which the odor
absorbing means of the air venting system is a charcoal containing
absorbing means.
32. The waste containing system of claim 27, in which the odor
absorbing means of the air venting system has an inlet surface and
an exhaust surface, whereby gas flowing from the inlet opening
towards the outlet opening flows in the odor absorbing means
through the inlet surface and outlet the odor absorbing means
through the exhaust surface, whereby the exhaust surface is at
least greater than the inlet surface.
33. The waste containing system of claim 27, in which the odor
absorbing means of the air venting system has an inlet surface and
an exhaust surface, whereby gas flowing from the inlet opening
towards the outlet opening flows in the odor absorbing means
through the inlet surface and outlet the odor absorbing means
through the exhaust surface, whereby the exhaust surface is greater
than 1.5 times the inlet surface.
34. The waste containing system of claim 27, in which the odor
absorbing means of the air venting system has an inlet surface and
an exhaust surface, whereby gas flowing from the inlet opening
towards the outlet opening flows in the odor absorbing means
through the inlet surface and outlet the odor absorbing means
through the exhaust surface, whereby the exhaust surface is
comprised between 1.5 and 5 times the inlet surface.
35. The waste containing system of claim 27, in which the air
venting system comprises a tubular body defined by a cylindrical
wall and extending between a bottom end up to a top end, a cover
cooperating with the top end of the tubular body to form a chamber
extending above the top end of the tubular body and associated with
a peripheral channel extending outlet the cylindrical wall of the
tubular body, whereby the bottom end of the tubular body defines
the inlet opening, while the peripheral channel is provided with at
least one outlet opening, and whereby the odor absorbing means is
located at least partly in the chamber.
36. The waste containing system of claim 27, in which the air
venting system comprises a tubular body defined by a cylindrical
wall and extending between a bottom end up to a top end, a cover
cooperating with the top end of the tubular body to form a chamber
extending above the top end of the tubular body and associated with
a peripheral channel extending outlet the cylindrical wall of the
tubular body, whereby the bottom end of the tubular body defines
the inlet opening, while the peripheral channel is provided with at
least one outlet opening, and whereby the odor absorbing means is
located as least partly in the chamber, as well as partly in the
peripheral channel.
37. The waste containing system of claim 27, in which the air
venting system comprises a tubular body defined by a cylindrical
wall and extending between a bottom end up to a top end, a cover
cooperating with the top end of the tubular body to form a chamber
extending above the top end of the tubular body and associated with
a peripheral channel extending outlet the cylindrical wall of the
tubular body, whereby the bottom end of the tubular body defines
the inlet opening, while the peripheral channel is provided with at
least one outlet opening, and whereby the odor absorbing means is
located as least partly in the chamber, as well as partly as in the
tubular body.
38. The waste containing system of claim 27, in which the air
venting system comprises a tubular body defined by a cylindrical
wall and extending between a bottom end tip to a top end, a cover
cooperating with the top end of the tubular body to form a chamber
extending above the top end of the tubular body and associated with
a peripheral channel extending outlet the cylindrical wall of the
tubular body, whereby the bottom end of the tubular body defines
the inlet opening, while the peripheral channel is provided with at
least one outlet opening, and whereby the odor absorbing means is
located as least partly in the chamber, as well as partly as in the
tubular body and at least partly in the peripheral channel.
39. The waste containing system of claim 27, in which the odor
absorbing means of the air venting system has the form of a body,
said body having a circular groove in which the top end of the
tubular body is introduced.
Description
FIELD OF THE INVENTION
[0001] The invention relates to an air venting system for absorbing
odors emanating from a waste treatment plant, installation, system,
or from a conduit used for conveying waste materials
THE PRIOR ART
[0002] The use of filtering system associated with an air inlet or
air outlet has already been proposed.
[0003] For example, DE 196 23 053 discloses a filtration system of
the gases emitted by a waste disposal unit. The filtration system
has a filter unit for the prevention of odor nuisance from the
waste disposal unit. The filter unit comprises a loose or packed
balas, such as activated charcoal, said loose or packed balas being
placed in a tube with outer wall presenting apertures and with a
bottom plate forming a rest for the ballast. The air flow in this
system is only upwards.
[0004] EP 1422354 discloses an air venting system comprising a body
with upper inlet openings and an outlet opening. The body has a
base, an outer wall and an inner wall, with a gap between the walls
forming a ring zone adapted for receiving or collecting water, said
ring zone comprising two ring chambers provided with passage. The
insert carries a filter at its upper end to absorb gas odors. The
cover closing the body prevents the entry of dirt by using a trap,
with a center section over the filter and outer passage openings
forming the inlet opening. When water is collected in the chambers,
air entering by the openings is moved first downwardly and then
upwardly, before entering the zone above the filter and before
flowing through the odor absorbing filter.
[0005] When making the downward and upward movements at the top of
the chamber, the air is not submitted to a deodorization step. The
air does not flow in an odor absorbing means when making said
downwards and upwards movement.
[0006] DE 20317812 discloses a casing with an upper opening
provided with a filter, the case is provided with a cover
protecting the upper face of the casing and the filter. A passage
is formed between the cover and the upper face of the casing for
enabling the gas flowing through the filter to flow in said passage
towards the outside. There is no downward and upward movement of
the gas in the filter when flowing towards the passage and the
outside.
[0007] JP 2000 283453 disclosed a charcoal filter provided in the
exhaust top for absorbing odors. The gas after being treated by the
charcoal filter is submitted to an upward and downward movement. In
no way, during the downward movement, the gas is contacting an odor
absorbing means.
[0008] In the United States and Canada, a product known as
<<Odorhog>>.TM. is marketed as septic vent pipe filter
for preventing problems due to odors from septic tanks. The
filtering system comprises a tube in which the charcoal filter is
placed. The air flow in the OdorHog device is only upwards.
[0009] The major problems of all the filtering system of the prior
art are efficiency, clogging and airflow restriction. In the
filtering system of the prior art, it is necessary to use charcoal
filter with a quite high length, whereby causing an important
venting restriction and whereby many gases will be kept in the
waste or septic tank or waste drainage system, such as waste water
drainage system. This could then cause odors to escape via any
other venting systems, leaks in the plumbing system, and even
possibly when using the toilets.
[0010] The present invention has for aim an compact filtering
system which is efficient, while having a reduced air flow
restriction. These results have been achieved by using a system
whereby the gas to filtered flows according to a path in the odor
absorbing means comprising an upwards flow portion and a downwards
flow portion.
BRIEF DESCRIPTION OF THE INVENTION
[0011] The invention relates to an air venting system for a gas
exhaust conduit of waste treatment system or waste conveying system
or substantially closed waste container, said system comprising:
[0012] a body defining an inner chamber; said body having at least
one inlet opening intended for receiving gases from the gas exhaust
conduit and at least one outlet opening intended for releasing
gases out of the body, and [0013] at least one odor absorbing means
placed in the inner chamber, said odor absorbing means having an
inlet surface (inlet through which the odorous gas from the waste
treatment system or conveying system enters into the odor absorbing
means) and an exhaust surface (exhaust through which the odor
absorbing means flows outside the odor absorbing means, said odor
being preferably ready to flow outside of the air venting system
through the outlet opening), whereby the system is adapted for
defining a gas flowing path between the inlet surface and the
exhaust surface of the odor absorbing means, said flowing path in
the odor absorbing means having at least a first flow path portion
with a first flow direction defined by at least one vector and a
second flow path portion with a second flow direction defined by at
least one vector, whereby at least one vector of the second flow
direction is opposite to a vector of the first flow direction.
Preferably, the system is adapted for defining a gas flowing path
between the inlet opening and the outlet opening, said flowing path
comprising at least an upwards flow path portion and a downwards
flow path portion.
[0014] Advantageously, the system is adapted for defining a gas
flowing path between the inlet opening and the outlet opening, said
flowing path defining at least an upwards flow path portion and a
downwards flow path portion in the odor absorbing means.
[0015] Advantageously, the odor absorbing means is placed in the
inner chamber so as to define a volume free of odor absorbing
means, whereby gas flowing from the inlet opening towards the
outlet opening flows at least partly from the inlet opening through
a portion of the odor absorbing means towards the volume free of
odor absorbing means, and through another portion of the odor
absorbing means from the volume free of the odor absorbing means
towards the outlet opening. Such a free volume is able to form a
buffer volume, suitable for having a better distribution of the gas
to be treated after an upwards flow, for its downwards flow.
[0016] Preferably, the odor absorbing means is placed in the inner
chamber so as to define a volume free of odor absorbing means,
whereby gas flowing from the inlet opening towards the outlet
opening flows at least partly according to an upwards flow path
from the inlet surface of the odor absorbing means and through a
first portion of the odor absorbing means towards the volume free
of odor absorbing means, and at least partly according to a
downwards path from the volume free of the odor absorbing means
towards the exhaust surface thereof through at least a second
portion of the odor absorbing means.
[0017] According to a detail of a preferred embodiment, in which
the inner chamber is defined by at least one wall, the odor
absorbing means is placed in the inner chamber so as to define
between the said at least one wall of the chamber and the odor
absorbing means a space free of odor absorbing means but closed by
said odor absorbing means, whereby gas flows in or out said space
only through the odor absorbing means. Gas flowing from the inlet
opening towards the outlet opening flows (preferably at least
partly upwardly) from the inlet opening through a portion of the
odor absorbing means towards the volume free of odor absorbing
means, and (preferably at least partly downwardly) through another
portion of the odor absorbing means from the volume free of the
odor absorbing means towards the outlet opening. The junction or
connection between the wall or walls of the chamber and the odor
absorbing means is thus substantially gas tight.
[0018] Most preferably, the odor absorbing means is a charcoal
containing absorbing means. The odor absorbing means can comprise
further agent(s) and/or additive(s), such as biocides,
bactericides, virucides, fungicides, etc., and mixtures
thereof.
[0019] According to an embodiment, the odor absorbing means has an
inlet surface and an exhaust surface, whereby gas flowing from the
inlet opening towards the outlet opening flows in the odor
absorbing means through the inlet surface and outlet the odor
absorbing means through the exhaust surface, whereby the exhaust
surface is at least greater than the inlet surface, preferably
greater than 1.5 times the inlet surface, most preferably comprised
between 1.5 and 5 times the inlet surface.
[0020] According to a preferred embodiment, the air venting system
comprises a tubular body defined by a cylindrical wall and
extending between a bottom end up to a top end, a cover cooperating
with the top end of the tubular body to form a chamber extending
above the top end of the tubular body and associated with a
peripheral channel extending outlet the cylindrical wall of the
tubular body, whereby the bottom end of the tubular body defines
the inlet opening, while the peripheral channel is provided with at
least one outlet opening, and whereby the odor absorbing means is
located at least partly in the chamber.
[0021] According to a detail of said embodiment, [0022] the odor
absorbing means is located as least partly in the chamber, as well
as partly in the peripheral channel or [0023] the odor absorbing
means is located as least partly in the chamber, as well as partly
as in the tubular body or [0024] the odor absorbing means is
located as least partly in the chamber, as well as partly as in the
tubular body and at least partly in the peripheral channel.
[0025] According to a specific embodiment, the odor absorbing means
has the form of a body, said body having a circular groove in which
the top end of the tubular body is introduced. Such a body can have
the form of a cassette, which can be easily be replaced when
required.
[0026] The invention relates also to a process in which the odor
emanating from a venting conduit connected to a waste treatment
station, plant such as septic tank, etc., or a conduit for
conveying waste materials, such as drain, sewer, main sewer,
etc.
[0027] The invention further relates to a waste containing system
selected from the group consisting of waste treatment system, waste
conveying system and substantially closed waste container, said
waste containing system being provided with at least one gas
exhaust conduit provided with an air venting system of the
invention, as disclosed hereabove, in the preferred examples shown
on the attached drawings and in the claims.
[0028] Details and characteristics of preferred embodiments will
appear from the following description in which reference is made to
the attached drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0029] FIG. 1 is a cross section view of a first embodiment.
[0030] FIG. 2 is an exploded view of the various parts of the first
embodiment of FIG. 1.
[0031] FIG. 3 is a cross section view of a second embodiment.
[0032] FIG. 4 is a schematic exploded view of a third
embodiment.
[0033] FIGS. 5 and 6 are cross sections views of the third
embodiments along the lines V-V and VI-VI.
DESCRIPTION OF PREFERRED EMBODIMENTS
[0034] FIGS. 1 and 2 are views of a first embodiment of an air
venting system of the invention.
[0035] The air venting system 1 comprises: [0036] a tubular body 2
defined by a cylindrical wall 3 and extending between a bottom end
4 up to a top end 5, [0037] a cover 6 cooperating with the top end
5 of the tubular body 2 to form a chamber 7 extending above the top
end 5 of the tubular body 2 and associated with a peripheral
channel 8 extending outside a portion of the cylindrical wall 3 of
the tubular body 2.
[0038] The bottom end 4 of the tubular body 2 defines the inlet
opening 9, while the peripheral channel 8 is provided with at least
one outlet opening 10. The odor absorbing means 11 is located as
least partly in the chamber 7, partly in the peripheral channel 8
and partly in the tubular body 2. The odor absorbing means has the
form of a body 11, said body 11 having a circular groove 12 in
which the top end 5 of the tubular body 2 is introduced.
[0039] The tubular body 2 is provided with a flange 13 showing
openings 10, possibly provided with screen, such as metallic screen
14. The flange 13 is provided at its end with a ring 15 provided
with means for cooperating with a portion of the cover 6, so as to
enable its fixation.
[0040] The odor absorbing means 11 has an upper face 16 which is
spaced from the top inner face of the cover 6, whereby defining a
volume 17 in the chamber 7 which is free of odor absorbing means,
i.e. a buffer volume. The odor absorbing means 11 has an inlet
surface 11A and an exhaust surface 11B, whereby the exhaust surface
11B is greater than the inlet surface. The exhaust surface 11B is
distant from the flange 13 and the screen 14. In this example the
exhaust surface is from about 3 to 10 times greater than the inlet
surface.
[0041] The cover can be provided with a means for pushing the odor
absorbing means towards the cylindrical body 2, such a means 20
being for example a button placed at the center of the inner top
face of the cover.
[0042] The working of the air venting system of FIG. 1 is as
follows:
[0043] The odor emanating from a tank, such as a septic tank, a
sewer, or a draining system are moving upwards in the circular body
2, said odor entering into the odor absorbing means 11 through the
inlet surface 11A. In said odor absorbing means 11, the odor flows
first upwardly in the portion of the absorbing body 11 within the
circular body 2. After said absorbing portion, the odor flows
partly upwardly towards the volume 17 free of odor absorbing means
before flowing back in the portion of the odor absorbing means
adjacent to the exhaust surface 11B, and partly transversally into
the portion of the odor absorbing means adjacent to the exhaust
surface 11B. The air or gas escaping the odor absorbing means are
exhausted via the screen 14.
[0044] The top portion of the cylindrical body 2 forms thus a
partition wall in the odor absorbing means.
[0045] In said embodiment, a substantially air tight connection is
ensured between the odor absorbing means 11 and the partition wall
12, as well as between the odor absorbing means and the ring 15.
The volume 17 free of odor absorbing means or the portion of the
chamber 7 free of odor absorbing means is closed by said odor
absorbing means 11, whereby gas flows in or out said space only
through the odor absorbing means.
[0046] Air can also enter in the circular body 2 from the
exterior.
[0047] The portion of the odor absorbing body 11 within the
circular body 2 is in close contact with the inner wall of the body
2 so as to avoid leaks between the odor absorbing body 11 and the
inner wall of the circular body 2.
[0048] The odor absorbing body 11 can have the form of a cassette
which can be replaced when required. The outer edge of the cassette
are for example made of a porous skin or layer, such as a flexible
skin made of woven material. The body is then for example
containing fibers mixed with the active charcoal. The outer skin or
layer of the body 11 is advantageously treated or provided with a
water repelling agent, such as a fluorosilane.
[0049] The thickness E of the body is advantageously at least 10
cm, while the height H of the portion of the body 11 in the
circular body 2 is at least 50% of the thickness of the body
11.
[0050] The volume of the odor absorbing body 11 is divided in two
portions, namely a central portion defined by the portion defined
by the groove 12 and its upwardly extension, and a peripheral
portion located outside of the central portion, said peripheral
portion having advantageously a volume at least equal, preferably
greater than the volume of the central portion.
[0051] The volume free of odor absorbing means 17 can be used as
means for ensuring preferably an upwards movement of the gas to be
exhausted in the central portion of the odor absorbing means 11,
and a good distribution of the flow of gas from the free volume 17
into the peripheral portion of the odor absorbing means 11.
[0052] Possibly the odor absorbing means can be formed by two or
more independent parts, which are placed the one near the other in
the chamber 7.
[0053] The embodiment of FIG. 3 is similar to the embodiment of
FIG. 1, except that the odor absorbing means has a reduced
thickness, so that substantially no portion of the odor absorbing
means extends in the cylindrical body 2. The odor absorbing body 11
is provided with an inner cylindrical wall 11W, so as to define in
said odor absorbing means a central portion and a peripheral
portion. The inner wall 11W is adapted for resting on the top edge
of the cylindrical body 2. The inner wall is advantageously
provided with a sealing means 11S so as to make a correct sealing
between the bottom edge of the inner wall 11W and the top edge of
the cylindrical body 2. The inner edge extends for example
substantially in all the thickness of the odor absorbing means, so
that the gas emanating from a septic tank, a sewer or a waste
(water) draining system flows substantially only from the body 2
into the free volume 17 of the chamber 7 through the central
portion of the odor absorbing body, and then from said free volume
17 of the chamber towards the exhaust opening 10 through the
peripheral portion of the odor absorbing body 11.
[0054] The embodiment of FIG. 4 is similar to the embodiment of
FIG. 1, except that the chamber 7 intended to contain the odor
absorbing means 11 has a specific shape. The chamber 7 is defined
between the cover 6 and an extension 2A of the circular body 2. The
filtering body 11 comprises four different portions 110,111,112,113
intended to be located each in a specific portion of the chamber 7.
The filtering body 11 comprises: [0055] a substantially cylindrical
top element 110, said top element bearing on its bottom face the
three elements 111,112 and 113, [0056] the element 111 having a
substantially 8-shape with a thickness varying between a minimum at
its central portion and a maximum at its end adjacent to the
exhaust opening 10, [0057] the elements 112 and 113 being located
each in the gap of the 8-shaped element 111, said elements 112,113
being separated from the element 111 by a groove 118 intended to
receive a separating wall 120 extending between the inlet opening
125 of the extension 2A and the exhaust opening 10.
[0058] Above the filter 11, a closed volume 17 free of odor
absorbing means 11 is defined.
[0059] The inlet openings 125 are provided with a screen 126 acting
as supporting means for the bottom faces of the elements 112 and
113, while the exhaust openings 10 are provided with a screen 14
acting more as protection means.
[0060] The working of the air venting device of FIG. 4 is as
follows:
[0061] The odor emanating from a septic tank or a sewer or a waste
drainage system flows in the pipe 2. When the odor arrives in the
extension 2A, the odor flow is split in two distinct flows, namely
a first flow flowing in the filtering element 112 and a second flow
flowing in the filtering element 113. In said filtering elements
112,113, the gas containing odor flows upwardly towards the upper
filtering portion 110 and the free volume 17 of the chamber 7. The
gas containing possibly some odor after its upwardly flows in the
filtering elements 112,113, is split, namely a first portion of gas
flowing in the left portion of the filtering element 111 before
being exhausted via the exhaust opening 10A, and a second portion
of gas flowing in the right portion of the filtering element 111
before being exhausted via the exhaust opening 10B. In the
filtering element 111, the gas flows downwardly and transversally
towards the exhaust faces 111A, 111B, before being exhausted via
the exhaust openings 10A,10B.
[0062] In this embodiment, the inlet faces 112A,113A of the
filtering elements 112,113 have a total inlet surface corresponding
substantially to the sum of the surfaces of the two exhaust faces
111A,111B of the filtering element 111.
[0063] Advantageously the element 111 has two protrusions
111C,111D, the top of which being adjacent to the exhaust openings.
A bottom face of each protrusion rests on a closed inclined face of
the extension 2A. The height H1 and the length L1 of a protrusion
is higher than the thickness E1 of the substantially cylindrical
top portion 110 of the filtering element, so that the gas flows
preferably upwardly towards the top free volume 17, before being
redistributed and flowing downwardly into the filtering portion
111, more specifically in the protruding portions 111C,111D.
[0064] According to possible embodiment, the filtering body 11 is
not provided with the portion 111 or with the portions 112,113.
* * * * *