NZ737619A - Drip emitter - Google Patents
Drip emitterInfo
- Publication number
- NZ737619A NZ737619A NZ737619A NZ73761917A NZ737619A NZ 737619 A NZ737619 A NZ 737619A NZ 737619 A NZ737619 A NZ 737619A NZ 73761917 A NZ73761917 A NZ 73761917A NZ 737619 A NZ737619 A NZ 737619A
- Authority
- NZ
- New Zealand
- Prior art keywords
- wall
- irrigation
- fluid
- irrigation drip
- drip emitter
- Prior art date
Links
- 230000002262 irrigation Effects 0.000 claims description 78
- 238000003973 irrigation Methods 0.000 claims description 78
- 239000012530 fluid Substances 0.000 claims description 69
- 210000003027 Ear, Inner Anatomy 0.000 claims description 20
- 230000000149 penetrating Effects 0.000 claims 1
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
drip emitter has a hollow body provided with first and second pools and with an inlet recess between the first and second pools. The inlet recess has inlet hole(s). The emitter is provided with an elastic band surrounding at least one of the inlet holes. The elastic band, in its closed position, is in a tight contact with the inlet hole(s). In its open position, it is expanded to open the inlet hole(s). , is in a tight contact with the inlet hole(s). In its open position, it is expanded to open the inlet hole(s).
Description
DRIP EMITTER
TECHNICAL FIELD
The present invention relates to drip emitters and tubes comprising the drip
emitters.
BACKGROUND ART
There are multiple types of irrigation drip emitters, as disclosed in, for example,
US 9,485,923, US 8,763,934, US 8,096,491, US 7,988,076, US 7,108,205, and US
6,945,476. Although currently known drip emitters have some advantages, they have
various problems of, e.g., experiencing pressure loss and/or getting clogged. There is
still a need for an improved drip emitter.
SUMMARY
An aspect of the present invention provides an irrigation drip emitter. The
irrigation drip emitter has a first end, a second end, an outer surface between the first and
second ends, and an inner surface between the first and second ends. The irrigation drip
emitter comprises a first pool, a first labyrinth fluid flow path, an inlet recess, a second
labyrinth fluid flow path, and a second pool. The first and second pools, the first and
second labyrinth fluid flow paths, and the inlet recess are defined on the outer surface and
are in direct or indirect fluid communication with each other. The irrigation drip emitter
further comprises an elastic band that surrounds the inlet access.
Another aspect of the present invention provides an irrigation line tube provided
with dripping holes. A plurality of irrigation drip emitters according to embodiments of
the present invention are provided in series inside the irrigation line tube such that the
dripping holes of the irrigation line tube are positioned above all or some of the first pools
of the irrigation drip emitters, all or some of the second pools of the irrigation drip
emitters, or both.
The embodiments and other aspects will be discussed in detail below.
BRIEF DESCRIPTION OF DRAWINGS
is a perspective view of an irrigation drip emitter in accordance with an
embodiment of the present invention.
is another perspective view thereof.
is a partial, enlarged perspective view of an irrigation drip emitter in
accordance with another embodiment of the present invention.
depicts first and second inner walls of irrigation drip emitters of some
embodiments of the present invention.
depicts first and second inner walls of irrigation drip emitters of some
other embodiments of the present invention.
depicts first and second ends of first and second inner walls of irrigation
drip emitters of some embodiments of the present invention.
depicts first and second ends of first and second inner walls of irrigation
drip emitters of some other embodiments of the present invention.
depicts first and second ends of first and second inner walls of irrigation
drip emitters of still some other embodiments of the present invention.
depicts an irrigation line tube comprising an irrigation drip emitter.
depicts an irrigation line tube comprising an irrigation drip emitter and a
fluid flow path thereof.
illustrates cross-sectional areas of inner surfaces of irrigation drip emitters
provided in an irrigation line tube, in accordance with some embodiments of the present
invention.
is a plan view of an inlet recess of an irrigation drip emitter in
accordance with some embodiments of the present invention in case where the elastic
band of the irrigation drip emitter is at a closed position.
is a plan view of an inlet recess of an irrigation drip emitter of
in case where the elastic band is at an open position.
is a plan view of an inlet recess of an irrigation drip emitter in
accordance with some other embodiments of the present invention in case where the
elastic band of the irrigation drip emitter is at a closed position.
DETAILED DESCRIPTION
Hereinafter, embodiments of the present invention will be described in detail with
reference to the drawings. It is to be understood, however, that the embodiments are
presented for illustrative purpose only and are not constructed to limit the scope of the
present invention.
An aspect of the present invention provide an irrigation drip emitter that does not
cause the above-described prior art problems (e.g., experiencing pressure loss and/or
getting clogged). Referring to FIGS. 1 and 2, an irrigation drip emitter (1) in accordance
with an embodiment of the present invention is formed in a hollow body. Although the
cross-section of the hollow body of FIGS. 1 and 2 is described to be circular, the shape of
the cross-section is not limited thereto. The cross-section of the hollow body can be any
shape as long as the purpose of the present invention can be achieved. Non-limiting
examples of the cross-sectional shape include a polygonal shape (such as triangular,
rectangular, pentagonal, and hexagonal shapes) and a round shape (such as a circular
shape). Also, the size of the cross-section can be suitably chosen according to design
needs.
The hollow body has a first end (100), a second end (500), an outer surface (200)
between the first and second ends (100, 500), and an inner surface (300) between the first
and second ends (100, 500). The irrigation drip emitter (1) comprises a first pool (10), a
first labyrinth fluid flow path (20), an inlet recess (30), a second labyrinth fluid flow path
(40), and a second pool (50). The first and second pools (10, 50), the first and second
labyrinth fluid flow paths (20, 40), and the inlet recess (30) are defined on the outer
surface (200) of the hollow body. The first and second pools (10, 50), the first and
second labyrinth fluid flow paths (20, 40), and the inlet recess (30) are in fluid
communication with each other directly or indirectly.
A first end wall (11) is formed on the outer surface (200) at or near the first end
(100). A first inner wall (21) is formed on the outer surface (200) between the inlet
recess (30) and the first end wall (11). The first labyrinth fluid flow path (20) is defined
by the first inner wall (21). The shape, number, and size (e.g., width and height) of the
first inner wall can be suitably chosen according to design needs or else. For example,
the cross-section of the first inner wall can be a polygonal shape, a round shape, or a
mixed shape. For example, two (or more) of the first inner walls can be provided and the
first inner walls can be in fluid communication with each other directly or indirectly. A
second end wall (51) is formed on the outer surface (200) at or near the second end (500).
A second inner wall (41) is formed on the outer surface (200) between the inlet recess (30)
and the second end wall (51). The second labyrinth fluid flow path (40) is defined by the
second inner wall (41). The shape, number, and size (e.g., width and height) of the
second inner wall can be suitably chosen according to design needs or else. For
example, the cross-section of the second inner wall can be a polygonal shape, a round
shape, or a mixed shape. For example, two (or more) of the second inner walls can be
provided and the second inner walls can be director indirect in fluid communication with
each other.
The first pool (10) is defined by the outer surface (200), the first end wall (11),
and a first end (211) of the first inner wall (21). The second pool (50) is defined by the
outer surface (200), the second end wall (51), and a first end (411) of the second inner
wall (41). The inlet recess (30) is defined by the outer surface, a second end (212) of the
first inner wall (21), and a second end (412) of the second inner wall (41). The inlet
recess (30) is provided with one or more inlet holes (35). A fluid (e.g., water) can flow
inside the hollow body of the irrigation drip emitter (1). The fluid that flows inside the
hollow body can be supplied to the inlet recess (30) through the inlet hole(s) (35). The
first pool (10) is in fluid communication with the inlet recess (30) via the first labyrinth
fluid flow path (20). The second pool (50) is in fluid communication with the inlet
recess (30) via the second labyrinth fluid flow path (40).
The irrigation drip emitter (1) further comprises an elastic band (60). The
elastic band (60) is provided in the inlet recess (30) such that the elastic band (60)
surrounds at least one of the inlet holes (35). The elastic band (60) is configured to move
between a closed position where the elastic band (60) is in a tight contact with the inlet
holes (35) to thereby prevent a fluid from flowing through the inlet holes (35) and an open
position where the elastic band (60) is expanded by a fluid flowing through the inlet holes
(35) to thereby allow the fluid to flow to the inlet recess (30) and then to the first and
second labyrinth fluid flow paths (20, 40). The elasticity of the elastic band (60) can be
suitably chosen according to design needs.
In some embodiments, as illustrated in , and , the first
inner wall (21) may include one or more horizontal walls, one or more vertical walls, or
both. Suitably, at least one of the horizontal walls may further have one or more
horizontal sub-walls (or branch walls), one or more vertical sub-walls, or both.
Similarly, the second inner wall (41) may include one or more horizontal walls, one or
more vertical walls, or both. Suitably, at least one of the horizontal walls may further
have one or more horizontal sub-walls, one or more vertical sub-walls, or both.
In some embodiments, the width of horizontal and vertical fluid paths formed by
the horizontal and vertical walls and sub-walls of the first inner wall (21) may be designed
to gradually increase or decrease as it goes from the second end (212) of the first inner
wall (21) towards the first end (211) of the first inner wall (21). Also, the width of
horizontal and vertical fluid paths formed by the horizontal and vertical walls and sub-
walls of the second inner wall (41) may be designed to gradually increase or decrease as it
goes from the second end (412) of the second inner wall (41) towards the first end (411)
of the second inner wall (41).
In some embodiments, the irrigation drip emitter (1) may further comprise an
additional first end wall (13) on the outer surface (200) of the hollow body at or near the
first end (100) of the hollow body. Similarly, the irrigation drip emitter (1) may further
comprise an additional second end wall (53) on the outer surface (200) of the hollow body
at or near the second end (500) of the hollow body.
Although it is described in FIGS. 1and 2 that both the outer surface (200) and the
inner surface (300) of the hollow body have a round cross-section, the cross-section of the
outer and inner surfaces (200, 300) is not limited to a round cross-section. Non-limiting
examples of the cross-sectional shapes include a polygonal shape (such as triangular,
rectangular, pentagonal, and hexagonal shapes) and a round shape (such as a circular
shape). Also, the cross-section of the outer surface (200) and the cross-section of the
inner surface (300) can have different shapes.
As illustrated in and the first end (211) of the first inner wall (21)
has one or more fluid passages (24). The first pool (10) is in fluid communication with
the first labyrinth fluid flow path (20) via the fluid passage(s) (24). The second end
(212) of the first inner wall (21) has one or more fluid passages (23). The first labyrinth
fluid flow path (20) is in fluid communication with the inlet recess (30) via the fluid
passage(s) (23). The second end (412) of the second inner wall (41) has one or more
fluid passages (43). The inlet recess (30) is in fluid communication with the second
labyrinth fluid flow path (40) via the fluid passage(s) (43). The first end (411) of the
second inner wall (41) has one or more fluid passages (44). The second labyrinth fluid
flow path (40) is in fluid communication with the second pool (50) via the fluid passage(s)
(44).
The shape, number, and size of the fluid passages (23, 24, 43, 44) can be,
suitably, chosen depending on design needs as long as it facilitates the above-described
fluid communication. The fluid passages can be formed in a round shape or a polygonal
shape. As a non-limiting example, the fluid passages may be formed in an arc shape or
rectangular shape, as illustrated in , and . As another non-
limiting example, the fluid passages may be formed in a round shape, as illustrated in . Also, the fluid passages can be formed at an appropriate position of the first/second
ends of the first/second inner walls. As a non-limiting example, the fluid passages may
be formed in the midst of the first/second ends of the first/second inner walls, as illustrated
in .
Another aspect of the present invention provides an irrigation line tube
comprising a plurality of irrigation drip emitters (1) of the present invention. An
irrigation line tube (5) in accordance with some embodiments of the present invention has
an outer surface, an inner surface, and dripping holes (15, 55) that penetrate the outer
surface and the inner surface. A plurality of the irrigation drip emitters (1) according to
embodiments of the present invention are provided in series inside the irrigation line tube
(5) such that one or more of the dripping holes (55) are positioned above all or some of the
first pools (10) of the irrigation drip emitters (1), one or more of the dripping holes (15)
are positioned above all or some of the second pools (50) of the irrigation drip emitters
(1), or both, as illustrated in
In some embodiments, the area of cross-sections of the inner surfaces (300) of the
irrigation drip emitters (1) may be designed to gradually increase as it goes from the first
irrigation drip emitter (positioned at or near a first end of the irrigation line tube (5); e.g.,
the 1 drip emitter of towards the last irrigation drip emitter (positioned at or near
a second end of the irrigation line tube (5); e.g., the N-th drip emitter of ) provided
in the irrigation line tube (5). Also, in some other embodiments, the area of cross-
sections of the inner surfaces (300) of the irrigation drip emitters (1) may be designed to
gradually decrease as it goes from the first irrigation drip emitter towards the last
irrigation drip emitter provided in the irrigation line tube (5), although it is not illustrated
in the drawings.
As described above, the elastic band (60) is provided with the irrigation drip
emitters (1) according to the embodiments of the present invention. The elastic band
(60) can surround a part or all of the inlet recess (30). The inlet recess (30), as illustrated
in , , and , may have inlet holes (35) arranged a single row (33).
In some embodiments, the inlet recess (30) may have inlet holes arranged in two or more
rows. In some other embodiments, the inlet recess (30) may have inlet holes arranged in
an irregular pattern.
In some embodiments illustrated in , the elastic band (60) covers all of
the inlet recess (30). In this case, the elastic band (60) surrounds all of the inlet holes
(35). In other embodiments illustrated in , the elastic band (60) covers a part of
the inlet recess (30). In this case, the elastic band (60) surrounds a part or all of the inter
holes (35), depending on the pattern in which the inlet holes (35) are provided in the inlet
recess (30).
As described above, the elastic band (60) is configured to move between a closed
position () and an open position (). If a fluid pressure is not sufficient to
expand the elastic band (60), the elastic band (60) is in a tight contact with the inlet holes
(35) to thereby the fluid is prevented from flowing through the inlet holes (35). On the
other hand, if a fluid pressure is sufficient to expand the elastic band (60) towards a space
(38) defined by the elastic band (60) and the irrigation tube line (5), the elastic band (60)
is expanded to thereby cause the fluid to flow to the inlet recess (30), then to the first and
second labyrinth fluid flow paths (20, 40), then to the first and second pools (10, 50), and
then through the dripping holes (55, 15), as illustrated in
The present invention has been illustrated by the above embodiments, but it
should be understood that the above embodiments are only for purposes of illustration and
description, and are not intended to limit the invention within the scope of the
embodiments described. Also skilled in the art will be appreciated that the present
invention is not limited to the embodiments described above, in accordance with the
teachings of the present invention can also make variations and modifications more of
these variations and modifications are within the present invention as claimed.
In the specification the term “comprising” shall be understood to have a broad
meaning similar to the term “including” and will be understood to imply the inclusion of a
stated integer or step or group of integers or steps but not the exclusion of any other
integer or step or group of integers or steps. This definition also applies to variations on
the term “comprising” such as “comprise” and “comprises”.
The reference to any prior art in this specification is not, and should not be taken as an
acknowledgement or any form of suggestion that the referenced prior art forms part of the
common general knowledge in Australia.
Claims (12)
1. An irrigation drip emitter comprising: a hollow body having a first end, a second end, an outer surface, and an inner 5 surface; a first end wall formed on the outer surface at or near the first end; a second end wall formed on the outer surface at or near the second end; a first inner wall formed on the outer surface and having a first end and a second end; 10 a second inner wall formed on the outer surface and having a first end and a second end; an inlet recess defined by the outer surface, the second end of the first inner wall, and the second end of the second inner wall and provided with one or more inlet holes through which a fluid flowing along the inner surface is configured to be supplied to the 15 inlet recess; a first pool defined by the outer surface, the first end wall), and the first end of the first inner wall; a second pool defined by the outer surface, the second end wall, and the first end of the second inner wall; and 20 an elastic band surrounding at least one of the inlet holes provided in the inlet recess, wherein the first inner wall includes at least one vertical wall, at least one horizontal wall, or a combination thereof to define a first labyrinth fluid flow path, wherein the second inner wall includes at least one vertical wall, at least one 25 horizontal wall, or a combination thereof to define a second labyrinth fluid flow path, and wherein the elastic band is configured to move between a closed position where the elastic band is in a tight contact with the inlet holes to prevent a fluid from flowing out of the inlet holes and an open position where the elastic band is expanded by a fluid flowing out of the inlet holes to thereby allow the fluid to flow to the inlet recess.
2. The irrigation drip emitter of claim 1, wherein the first inner wall includes at least 5 one horizontal branch wall, at least one vertical branch wall, or a combination thereof.
3. The irrigation drip emitter of claim 1, wherein the second inner wall includes at least one horizontal branch wall, at least one vertical branch wall, or a combination thereof..
4. The irrigation drip emitter of claim 1, wherein the width of horizontal and vertical fluid paths formed by the horizontal and vertical walls of the first inner wall gradually increases or decrease as it goes from the second end of the first inner wall towards the first end of the first inner wall.
5. The irrigation drip emitter of claim 1, wherein the width of horizontal and vertical fluid paths formed by the horizontal and vertical walls and sub-walls of the second inner wall gradually increases or decreases as it goes from the second end of the second inner wall towards the first end of the second inner wall.
6. The irrigation drip emitter of claim 1, wherein the first end of the first inner wall has one or more fluid passages, the second end of the first inner wall has one or more fluid passages, the second end of the second inner wall has one or more fluid passages, and the first end of the second inner wall has one or more fluid passages such that the first and 25 second pools, the first and second labyrinth fluid flow paths, and the inlet recess are in fluid communication with each other directly or indirectly.
7. The irrigation drip emitter of claim 6, wherein at least one of the fluid passages is formed in the midst of the first end of the first inner wall, the second end of the first inner wall, the first end of the second inner wall, the second end of the second inner wall, or a combination thereof. 5
8. The irrigation drip emitter of claim 1, further comprising an additional first end wall formed on the outer surface at or near the first end, an additional second end wall formed on the outer surface at or near the second end, or both.
9. The irrigation drip emitter of claim 1, wherein the inlet holes are formed in a 10 single or multiple rows.
10. The irrigation drip emitter of claim 1, wherein the elastic band surrounds some of the inlet holes. 15
11. An irrigation line tube formed in a hollow body having a first end, a second end, an outer surface, and an inner surface, the irrigation line tube comprising: dripping holes penetrating the outer surface and the inner surface of the irrigation line tube; and a plurality of the irrigation drip emitters of claim 1 provided in series inside the 20 irrigation line tube, wherein the dripping holes are positioned above all or some of the first pools of the irrigation drip emitters, all or some of the second pools of the irrigation drip emitters, or a combination thereof. 25
12. The irrigation line tube of claim 11, wherein the area of cross-sections of the inner surfaces of the irrigation drip emitters gradually increase or decrease as it goes from the first irrigation drip emitter positioned at or near the first end of the irrigation line tube towards the last irrigation drip emitter positioned at or near the second end of the irrigation line tube.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/491,527 | 2017-04-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
NZ737619A true NZ737619A (en) |
Family
ID=
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