Fluid sprinkling – spraying – and diffusing – Flow deflecting or rotation controlling means – Fluid rotation inducing means upstream of outlet
Reexamination Certificate
2002-06-06
2003-12-23
Rivell, John (Department: 3751)
Fluid sprinkling, spraying, and diffusing
Flow deflecting or rotation controlling means
Fluid rotation inducing means upstream of outlet
C239S600000, C239S383000, C239S390000
Reexamination Certificate
active
06666386
ABSTRACT:
BACKGROUND OF THE INVENTION
(a) Field of the Invention
The invention relates to a spray nozzle structure, particularly an atomizing nozzle structure that produces atomizing effects.
(b) Description of the Prior Art
An atomizing nozzle is used to spray atomized water from small holes to control the temperature and humidity inside a greenhouse growing flowers and/or vegetables.
As shown in
FIG. 1
, the conventional atomizing nozzle comprises a main unit
11
, a rotor
15
and a sealing cap
19
. Wherein, inside the main unit
11
are a through hole
12
, an accommodating chamber
10
that are communicative with each other, and a taper opening
13
at the intersection of through hole
12
and chamber
10
. At the top of main unit
11
is an embedding groove
14
. The embedding groove
14
communicates with the accommodating chamber
10
. One end of the rotor
15
is a tapered part
16
, while the other end has a matching cut groove
17
. Thereby, the rotor
15
is positioned in the accommodating chamber
10
, the tapered part
16
is matching the taper opening
13
, and the rotor
15
is positioned at a specified distance from a wall face of the accommodating chamber
10
to form a clearance
18
. On the top side of the sealing cap
19
is a spray nozzle
191
, the sealing cap is installed inside the embedding groove
14
of the main unit
11
. The top of the embedding groove
14
is punched and pressed to its center to form a flange
111
resting against the peripheral of the top of the sealing cap
19
, keeping the sealing cap
19
and the rotor
15
from escaping.
However, since the clearance
18
of the above atomizing nozzle is small, extraneous matter and dust are often trapped in the clearance
18
. So after a period of atomizing operation, water could not be sprayed smoothly, resulting in poor atomizing performance and the formation of a water column. Frequent impact of the water column on the plant will result in plant diseases, as well as poor performance of temperature and humidity control.
Therefore, the best solution to remedy the poor atomizing performance of conventional atomizing nozzle is to remove the extraneous matter and dust in water from the atomizing nozzle. However, it can be understood in the above atomizing nozzle structure that, one end of the main unit
11
with the sealing cap
19
is limited by the flange
111
and could not be disassembled; the other end of the main unit
11
inside with the taper opening
13
where between the through hole
12
and the accommodating chamber
10
retains the rotor
15
, thus the rotor
15
could not be removed. So, the conventional atomizing nozzle simply could not be disassembled for cleaning purpose. An attempt to clean the inside by projecting water jets will be time and labor consuming with poor effects. Therefore, for effective removal of accumulated dust from the atomizing nozzle, it becomes quite important that the atomizing nozzle is accessible for cleaning.
A spray nozzle was disclosed in U.S. Pat. No. 6,000,636, comprising a rotor installed inside a main unit, and a cap block sealed on one end of the main unit. Wherein, the main unit has formed a flange to retain the cap block from escaping, which simultaneously limit the rotor from escaping. Though with that structure the flange can be destroyed before the rotor is taken out for cleaning purpose, but then the entire nozzle is also destroyed and can no longer be used again.
Another spray nozzle was disclosed in U.S. Pat. No. 5,921,468, comprising a rotor installed inside a main unit, at an end of the main unit being a flange to limit the rotor from escaping. Though with that structure the flange can be destroyed before the rotor is taken out for cleaning purpose, but then the entire nozzle is also destroyed and can no longer be used again. Another type of spray nozzle was also disclosed in the same article, involving a plunger that is plugged to a lower part of a main unit, thereby preventing a rotor accommodated inside the main unit from escaping. Though with that structure the plunger can be removed to clean the rotor, at that stage requiring the cleaning of the rotor, the extraneous matter and dust in water have already accumulated to a sufficient amount to keep the rotor from being removed.
Yet another type of spray nozzle was disclosed in U.S. Pat. No. 5,927,611, comprising a rotor installed in a main unit. However, at that stage when the rotor requires cleaning, the extraneous matter and dust in water have already accumulated to a sufficient amount to keep the rotor from being removed.
SUMMARY OF THE INVENTION
The primary objective of the invention is to provide an atomizing spray nozzle structure that can be disassembled for more cleaning conveniently.
The following are some preferred embodiments of the invention.
REFERENCES:
patent: 3693888 (1972-09-01), Rondas et al.
patent: 4347979 (1982-09-01), Mathews
patent: 4583689 (1986-04-01), Rosenberg
patent: 5143293 (1992-09-01), Pairis
patent: 5224653 (1993-07-01), Nelson et al.
patent: 5340029 (1994-08-01), Adams
patent: 5718381 (1998-02-01), Katzer et al.
patent: 5727735 (1998-03-01), Baumann et al.
patent: 5823435 (1998-10-01), Morgan et al.
patent: 5921468 (1999-07-01), Palestrant
patent: 6000636 (1999-12-01), Huang
patent: 6488218 (2002-12-01), Townsend et al.
Kokabi Azadeh
Rivell John
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