DE1933070C - Disc-shaped impeller of a turbomachine - Google Patents

Description

ipnkt. Up to this point

the illustrated exemplary embodiment is it radial direction ^^ Z ^ nAuta of _the flow

around a centripetal flow-through turbine, with the uue ^Rt - '" ^ initially changes slightly

the working medium through a guide apparatus or canals7 in the ^manner 'D _ad ialrichtung, with large

a suitable guide wheel tangentially on the face of the width in ^Achsnchtun V7v: _htnn4 , now in one

Impeller part 2 flows into the impeller. 5 ßer width in T "for 155SZ bet smaller width

Fig. 2 shows the impeller shown in Fig. 1, greater width m ^Axia i? ^c "™ j £. _{So may} the outer

partly in section, partly in view perpendicular to the shaft. in day-to-day detection, ™ «S _tange ntial direc-

Fig. 3 shows a section along the dash-dotted opening 9 in the essentials & en_a »β during the

th line III-III in Fig. 1. Direction of running barges gesiai ^ _{ΑΛύααάαά in}

The F i g. 1 and 3 illustrate, in particular, internal ottnation; lu, <"j> in the axial direction, apart from the design of the partition walls 3 with the direction of the« e »^ ^l .., direction designed their extensions, the partition walls flowing in, as a slot in ram * ·

its middle area even and in the area that can be. _ίαηΆλ . «\ _Η Λ through to the outside

Openings on both front sides of the impeller. The flow channels sinu _rotations . _or

Λο, ο-f in olpirhpr Rirhtiinp are specified that such areas are limited, Qie "« '"Tnn ^ areafrhe 13.

inrem muucreu ocicitu cuch uuu im dcich.ii u «·» "". "-" "" "ct channels are outward mn uum.

Openings on both front sides of the impeller. The flow channels sinu _rotations . _or

are curved in the same direction in such a way that so- 15 surfaces delimit our _Ianenfläc he 13,

probably formed on the outer openings 9 as well as on the guide body 12 who α ». _{Flow channel}

inner openings 10 the direction of the relative currents ^di \ the limiting surface ^ _{area of the}

mung is predominantly tangential. high forms is ^ double t geK _{axis of rotation 2Uge} .

As is especially apparent from Fig. 1, the outer opening en »» »^ _ungsflächc 14 of the

the working fluid flows in the direction of arrow 6 in 20 turned d ". the inner« »^^ overflow edge

the impeller, where the flow direction over- impeller teucs l ^uU ^ 'y _the ~ _e top edge is the

predominantly tangential and only a small 15 ^a Dg " ^cWo ssen. _{9 incoming} work

Axial component increases. The flow is inwardly through the outer υππ g ^ ^ _{the radja] e}

within the flow channel 7, as shown in FIG. 1, means directly from u
first up to the dash-dotted line 8 in a 25 direction.

1 sheet of drawings

Claims (1)

1 2 To create an impeller that runs with as little flow Patent claim: mung losses a high pressure gradient allows ^P but with the footprint of the machine small m disk-shaped impeller is hold a flow. This object is achieved in an impeller machine with predominantly S of the initially specified type in the middle area with radially flowed through flow channels and with the combination of the following features: on different circumferential lines in the two _a ) the partition walls extend from the outer end faces of the impeller arranged openings - Edge of the outer openings up to the inner gene of the flow channels, the outer edge of the inner openings;
openings are designed such that a pre-io _{b) rennw the} T ände of the running are mainly tangentially in its central region, in the direction of rotation slightly curved _{plane or in ra} dialer direction wheel facing and a much smaller _and - _{n standby} i _cn of openings on the two axial components of the relative flow of the end faces of the impeller is achieved in such a way in the same axial flow medium, and the direction is curved so that both the outer inner openings are designed in such a way that a 15 openings as well as the inner openings axial component of the flow is achieved, _{DJE Ri} £ _{HTU 'n} g the relative flow mainly with tangential istwände radially extending separating are provided, the limitation of "'", .. _c, s -... "", v,,. i The width of the flow canal are used to identify ^c ) ^the boundary walls, which limit the flow channel through the combination of the following * o heights, run from the inside to uu features ^with double pelter curvature, where the 1 gente of the generators of the boundary walls a) the partition walls (3) extend from the axially at the openings and in the middle area outer edge of the outer openings (9) rich of the impeller essentially radially gc- is aligned to the inner edge of the inner opening. 8 ^en C °) ^; To the problem to be solved by the invention b) the dividing walls (3) are _{flat in their middle emes} compared to the known impellers or are to be fulfilled in the radial direction with a slightly more pronounced impeller; both end faces of the impeller _{3o ma} | _e required. Curved toward the mentioned under c) Merkderart in the same axial direction, _ma j _{is to be} noted that a flow machine that both of the outer openings (9) _with similar structural features already and on the inner openings (10), the _d ie USA. - Patent 2 889 107 become known Direction of the relative flow predominantly j _{st There} j _{st e} j _ne vane arrangement is a radial tangential; ^ ₅ machine described and illustrated, insofar c) the boundary walls (13, 14), which limit the flow of conventional configurations of a flow channel height, run from the measuring machine deviates from the axial entry and exit with a double curvature, exit in the radial direction similar to the screw where the Tangent of the generatrix of the benpumpen is shifted from one another.
Boundary walls at the openings (9, 10) 40 Compared to the known disk-shaped running axially and in the central area of the running wheels for turbo machines, the invention offers the wheel is directed essentially radially. in this respect a considerable technical progress, than the pressure gradient due to the design of the flow flow channels as well as partitions and boundary walls 45 increased, but not the space requirement of the machine The invention relates to a Scheibenför- is enlarged, because it can now external clay Impeller for a turbomachine with im and deflection elements are omitted. The Strömittler The flow losses in the impeller itself are reduced in the area with predominantly radial flow. Flow channels and with on different Um- The invention enables a shock-free deflection Support lines in the two end faces of the impeller 5 ° of the tangential flow into the interior of the flow arranged openings of the flow channels, whereby flow channel, and vice versa. The radial component the outer openings are designed in such a way that one of the relative speeds goes steadily from zero predominantly tangential, in the direction of rotation of the running to a maximum value. wheel pointing and a much smaller axial one based on the drawing is intended to be an embodiment Component of the relative flow of the flow 55 of the invention will be explained in more detail. The figures is achieved by means of, and the inner openings show turbine runners as exemplary embodiments genes are designed such that an axial component in its essential parts for the invention in nent of the flow is achieved, with a radially simplified and schematic representation. Directional partition walls are provided, identical or corresponding parts are in which deserve the limitation of the width of the flow channel 60 in all figures with the same symbols, see. Such an arrangement is already through the In the embodiment shown in Fig. 1 U.S. Patent 2,944,730 became known. The game is a sectional representation This known machine is one of a rotor part, in which the shaft is designated by 1 Compressor, with an axial deflection of 65 net. In Fig. 2 the impeller is drawn face up. The direction of flow within the impeller is tapered, so that only the rotationally symmetrical stand comes. ended wall part 2 and the partitions 3 between The invention is based on the object of the individual flow channels being visible. at