DE1528702A1 - Blade-less centrifugal pump - Google Patents

Description

description

Sehaiifellcme centrifugal pump ι 5 ^ o / U /

Applicant Adolf von Fslkenhaueen

The centrifugal pumps and blowers known at the time all have an impeller with more or less large blades in the most varied of variations. The following components are suitable for these constructions

1 ») Depending on the strength properties of the material and the centrifugal forces that occur, the maximum achievable size and performance of a pump is" limited, so to speak, naturally given. ™ 2.) The blades working directly in the required medium take on the temperature of the medium so that, due to the properties of the material, a certain maximum temperature of the "KedixiTfl" must not be shoveled "- 3 *} Ie!"

Fi-iiftf »! Slide and mud exposed to increased erosion. TMe frftnaTinten Kachteile now pollute through the present construction "to be eliminated · The proposed pump set

represents - roughly speaking - something in between

Pin water jet pump and a centrifugal pump. Batftht the device essentially consists of bVL $ enen (bearings, from pine Frei "" Pl Pump ^ ieammensetzti pump housing with connection, spiral with pressure nozzle, possibly stator, and finally the impeller 1. Df »e Tiaufrad iat it now that the TTntersohiede to>

herkfiFimü ichpn Pwmpe embodies, "Bs turns while in the same Dreh8-1.Tm as usual, but has in ßegeneetz to alleijL known * T ^ ufradformeii no Laufscha.ufein. Hitn. Ptich mark before! ή ewnde pump not do without it, to exert a certain amount of force on the conveyed medium to set it in rotation and

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thus to cause a pressure increase. Several do that. Liquid Spray): "oils with high Grescbwindigkeit through nozzles 2 of the rotating impeller in the Tfotatinrsraum 3 Ptnrrpe enter» called This liquid ,: hereinafter "Tireibflüssigkeit ¹ *, as has as the rotating impeller angular momentum, the eie aim after exiting 'the The impeller releases a large part of the liquid inside the pump - called the "pumped liquid". This is also the difference to the normal water jet pump: the pumped liquid is not carried away by the mere injector effect, which would result in a very poor degree of efficiency In the proposed device, the hurling jets of tires exert a lateral acceleration force on the relatively slow delivery liquid, which corresponds approximately to the effect of rotating blades.

The nozzles 7 of the rotating impeller 1 are expediently designed in the form of slots so that the exiting liquid jet is flat. Are ώχι achieved by Ar "ordnunp · the soblitzartigen orifices obliquely · πιτ Botationsaohse \ *, UB & the flat liquid jets - ebepso vn e conventional blades - on its side facing the suction side of the edge region 4 a certain angle to the £ nströmungsri.r" Pla the For the liquid- form, deT * enables the smooth inflow of the pumped liquid.

The necessary ^ r ^ ibfTHRr-igkeit must be brought by a separate point of pressure. The energy required to initiate the rotary motion of the impeller can be produced by a K \ pVtrom <-> t . Since, however, the vö ± i ^ e TreibH · ""'*.:! »-Ness

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must throw fed, let ep cheaper to have the rotary motion of the impeller generated directly by the propellant fluid flowing with swirl? .v. The rotating wheel therefore acts in its inside such as a turbine, thereby EINP very compact design is achieved, which can be performed completely closed without stuffing box.

Now it is easy to see the advantages of the proposed construction:

1.) The suggested remaining impeller is compared to a ^ conventional impeller because of its smaller dimensions exposed to lower centrifugal forces. This makes it possible with the same material stress, significantly larger "units to build than was previously possible. This advantage could result in the construction of giant pumps and extremely large cooling plants enable.

2.) Tn in relation to temperature resistance is the one described The impeller is superior to all others because of the * remaining hub body can be intensively cooled by the outflowing propellant liquid, while the possibly higher temperature of the "Pumped liquid only has a small surface for penetration finds. It can be estimated that on this Wise liquids and gases with temperatures up to approx. 1000 ° C pumped vrp-rden. This appears to be a practical application of the proposed device possible as:

for extreme conditions (waste incineration, ungsani a.?en), circulation pump for extremely hot Gas e (Atomree. ^ Toren).

?.) IT ¹ Pr p \ I in wastewater technology, when pumping solids

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The new pump can be used for liquids that may contain liquids and may contain fibers. Especially in chemical plants Occurring problem to have a reliable pump for pumping highly aggressive media, should be due to the proposed construction can be brought to an economical solution, since the problem of the gland seal does not exist here.

A few more thoughts should now be given on the novelty of the proposed one Principle.

Pumps are known in which the liquid rotating with a paddle wheel as it flows past in front of a stationary one Steam outlet through the steam pressure a desired "acceleration learns. (Pat.schr. 332878 / .59b // 5 / Ol and Pa. +. Very. 35110 / 59b // 5/99). The static vapor pressure is particularly effective here on the liquid.

Another construction (Pat.schr. 83H8O5 / 59b // 5/99) is based a.uf dom Π-edanken, in a narrow channel of a doll's wheel alternately inject gas and liquid. Here we will the liquid like a piston and pushes as a result of the in the impeller occurring. Centrifugal forces put the gas together. Also works here the liquid not brought into the impeller by its own kinetic energy, but through the "Res chieuni gung.

From the hydraulic couplings the principle "is known to convey kinetic earth to a liquid with the help of a paddle wheel and to convey this through a and ^ fes ^^ Ήρπ-ΡρΙ -mfl « ηαΛρτ »mi

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useful to take from the liquid «.

The one in patient is very similar. 1145O2O / 59b // 5/41 laid down Thought, with the help of a "driving fluid" the impeller of a The pump can be operated directly, which in turn means that at the same time the medium to be pumped "moves." appears similar to the one proposed, but works just like the one the rest of the mentioned from a fixed inlet nozzle of the "TreJbflüRslgkeit", so that the entering "Propellant" flows into the "rotation space of the pump" only with a linear impulse, which with the help of the impeller "in - ■ rotational energy is implemented. It can therefore in this case the disgraced impeller cannot be dispensed with either. In contrast occurs in the proposed pump, the "driving fluid", as described, from a rotating nozzle system a defined rotational energy into the rotational space, so that, according to the invention, the blades of the impeller are dispensed with can be.

BATH

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Claims (4)

Claims 1.) Centrifugal pump for liquids and gases in the broadest sense, characterized in that in a rotation space from a rotating! Mis ens system one or more liquids or Gas jets enter, which set the medium to be conveyed in rotation due to their rotational energy. Centrifugal pump according to claim 1, characterized in that the rotating nozzle system has no blades that come into contact with the medium to be conveyed and onto it Could exert acceleration forces. 3. Centrifugal pump according to claim 1, characterized in that the fluid jets emerging from the rotating nozzle system emerge flat, and that the arched surfaces formed by them - at their the PumpsRUgppate facing edges (4) - to the direction of flow of the conveyed liquid form an angle that »allows a smooth flow the eligibility for funding allows. 4. Centrifugal pump according to claim 1, characterized in that the rotating nozzle system has its rotary motion diirch the with swirl influx of propellant fluid and in mine Inside itself works as a turbine. 909823/0735 ORIGINAL