Double cone for generation of a pressure difference

Details Double cone for generation of a pressure difference Double cone for generation of a pressure difference

2002-02-27

2004-03-09

Chambers, A. Michael (Department: 3753)

Fluid handling

Flow affected by fluid contact, energy field or coanda effect

Device including linearly-aligned power stream emitter and...

C137S803000, C137S888000, C137S565220

Reexamination Certificate

active

06701960

ABSTRACT:

The present invention relates to double-cone devices according to claim 1, particularly of the type disclosed in WO-A-87/01770. It further relates to installations comprising double-cone devices.
Double-cone devices are described in the WO-A-87/01770 whose content is incorporated in this description by reference. The double-cone device, amongst other things, allows one to upgrade the available pumping pressure of a modest conventional pump. When incorporated in a compressor loop, such as proposed in the aforementioned patent, numerous novel possibilities become evident.
The double-cone device essentially consists of two cones which are connected by their ends of small diameter. At the interface, i. e. interspersed between entry cone and exit cone, an orifice is provided. In the region of the orifice, the double-cone device, if penetrated by a fluid, builds up a surprisingly low pressure which allows another fluid to be drawn into the device with high efficiency. When included in a closed loop with a pump, the pressure in this loop can be increased in that the double-cone unit sucks in fluid until an equilibrium is attained. The term fluid refers to both liquids and gases.
The double-cone device is characterized by the angles &thgr;
1
and &thgr;
2
of the conicity of the entry resp. the exit cone:
F
=(1+sin &thgr;
1
)
2
*sin
2
&thgr;
2
The quality function F should always be less than 0.11. The ranges are detailed hereinafter:
<0.0035:
best
0.0035-0.0155
very good
0.0155-0.0250
good
0.0250-0.0500
satisfying
0.0500-0.1100
still sufficient
>0.1100
poor
In practice, however, the known double-cone devices showed a rather short lifetime.
Therefore, one object of the present invention consists in providing a double-cone device of increased lifetime.
Another object of the present invention is to provide new applications of the double-cone device, particularly the one fulfilling the first mentioned object.
A double-cone device complying with at least one of these objects is given in claim 1. The further claims indicate preferred embodiments and uses satisfying even the second object.


REFERENCES:
patent: 2677389 (1954-05-01), Jisha et al.
patent: 3556409 (1971-01-01), Johannisson
patent: 3656495 (1972-04-01), Noren
patent: 3912470 (1975-10-01), Fluckiger
patent: 3933113 (1976-01-01), Dornak, Jr.
patent: 4027407 (1977-06-01), Kiss
patent: 4041984 (1977-08-01), Morel
patent: 4190537 (1980-02-01), Tondreau et al.
patent: 4542775 (1985-09-01), Beck
patent: 4625744 (1986-12-01), Arnaudeau
patent: 4917151 (1990-04-01), Blanchard et al.
patent: 5311907 (1994-05-01), Houck
patent: 5797420 (1998-08-01), Nowicki et al.
patent: 5863128 (1999-01-01), Mazzei
patent: 6427724 (2002-08-01), Hua
patent: 689722 (1999-09-01), None
patent: 972270 (1959-06-01), None
patent: 0599281 (1994-06-01), None
patent: 0612078 (1994-08-01), None
patent: 740179 (1933-01-01), None
patent: 2239142 (1975-02-01), None
patent: 2580191 (1986-10-01), None
patent: 6555 (1921-10-01), None
patent: 6811379 (1970-02-01), None
patent: 87/01770 (1987-03-01), None
patent: 98/58175 (1998-12-01), None
patent: 98/58176 (1998-12-01), None
patent: 99/08003 (1999-02-01), None
M.L. Hoggarth, “The Design and Performance of High-Pressure Injectors As Gas Jet Boosters”,Proceedings of the Institution of Mechanical Engineers, vol. 185, No. 56/71, 1970-1971, pp. 755-765.

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