Fluid sprinkling – spraying – and diffusing – Fluid pressure responsive discharge modifier* or flow... – Fuel injector or burner
Patent
1986-08-26
1988-02-09
Skaggs, H. Grant
Fluid sprinkling, spraying, and diffusing
Fluid pressure responsive discharge modifier* or flow...
Fuel injector or burner
239570, 137509, 222496, B05B 130
Patent
active
047237252
DESCRIPTION:
BRIEF SUMMARY
The subject of the present invention is a pressure reducer/regulator for dispensing a gaseous, liquid, viscous, powdery or pasty product, comprising a body provided with a cylindrical bore, in which are mounted two pistons fixed rigidly to one another and equipped with elastically deformable segments, and a spring working under compression between the front (sic) of the bore and one of the pistons and, at rest, keeping the pistons up against a stop located opposite the other piston, a first radial port opening out between the pistons and communicating with the high pressure, and a second radial port in the region of the segment of one of the pistons forming the low-pressure outlet, the chamber formed between the other piston and the bottom of the bore being connected to the atmospheric pressure.
A reducer/regulator of this type is described in Swiss Patent No. 618,896. In this prior reducer/regulator, the radial port located in the region of the segment of one of the pistons consists of a cylindrical hole. Now because of the mode of operation of this reducer/regulator, which moreover is surprising and has required considerable time to analyze, the sensitivity of the pressure reducer/regulator is very high, that is to say a minute movement of the double piston causes a great variation in pressure, thus making very fine adjustment necessary. As a result of this, it is very difficult to achieve series assembly.
The main object of the present invention is to reduce the sensitivity of such a reducer/regulator, so that it can be assembled in series, without the need to carry out an adjustment of the the position of rest of the double piston.
To achieve this, the pressure reducer/regulator according to the invention is defined in that the port located in the region of the segment of one of the pistons consists of at least one longitudinal slot, the stroke of the pistons in the direction of the spring being limited by a stop, in such a way that when the corresponding piston is up against this stop, the passage between the central chamber and the cavity through the longitidinal slot is not completely closed.
The effect of this modification is not only to allow series assembly without subsequent adjustment, but also to make it possible to convey through the reducer/regulator not only a gas, as intended in Swiss Patent No. 618,896, but any product capable of flowing through a macro-orifice, that is to say both liquid products and viscous, powdery or even pasty products. This second advantage affords new possibilities in the dispensing of various products, and consequently the object of the present invention is also to mount the pressure reducer/regulator according to the invention in a dispensing head intended to be fitted on a vessel containing a pressurized product and equipped with a valve, the pressure reducer/regulator being assembled directly in series with the valve and having the product to be dispensed passing through it.
The position of the spring depends on the use of the pressure reducer/regulator. In a use, such as that described in Swiss Patent No. 618,896, the spring will be fitted so as to bear against the piston interacting with the low-pressure outlet port, as described in this patent, whereas in a use in a dispensing head the spring will be fitted so as to bear against the other piston.
According to an economical alternative embodiment comprising fewer components than the device defines (sic) above, the pressure reducer/regulator comprises a body provided with a cylindrical bore, in which is mounted a single piston equipped with an elastically deformable segment and a spring working under compression against the bore bottom and the piston and, at rest, keeping the piston up against a stop, the bore having a first axial port opening out on the side of the piston opposite the spring and communicating with the high pressure, a radial port in the region of the segment of the piston forming the low-pressure outlet and consisting of at least one longitudinal slit made in the wall of the bore and extendin
REFERENCES:
patent: 1651971 (1927-12-01), Shield
patent: 1735718 (1929-11-01), Attendu
patent: 3099997 (1963-08-01), Kroffke
patent: 3159350 (1964-12-01), Mangold
patent: 4082225 (1978-04-01), Haynes
patent: 4486039 (1984-12-01), Jayne
Burns Robert E.
Etablissements Technospray
Lobato Emmanuel J.
Skaggs H. Grant
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