JPS6323361B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an axial multipurpose flow device that can be used as a prime mover, a machine, or a flow meter.

The device of the invention increases the work capacity of a fluid with the aid of applied mechanical work to convert the energy of the fluid into mechanical work or to transport the fluid. The rotational speed or angular velocity of a rotating element is always proportional to the velocity of the fluid as a result of perfect static and dynamic balance of the rotating parts.
The device of the invention is therefore particularly suitable for measuring fluids with great precision.

(Prior art and its problems) Known devices for the same purpose usually have large frictional losses and the fluid is forced to produce vortex-like accelerations, which complicates the analysis of the volume limit. , which can generally only be realized incompletely.

BACKGROUND OF THE INVENTION Flow-type pumps, which operate according to fluid technology principles, can only operate economically under certain circumstances. Its efficiency depends on the flow rate and therefore on the rotation speed.

Conventional devices based on fluid technology produce significant mechanical, hydraulic and volumetric losses.

(Means for Solving the Problems and Their Effects) The purpose of the axial multipurpose flow device of the present invention is to avoid the drawbacks of known devices and to reduce the volume of fluid flowing and the rotational speed of the device in all operating ranges. The objective is to increase both the efficiency of converting the kinetic and potential energy of a flowing fluid into mechanical work and the efficiency of converting mechanical work into kinetic and potential energy by ensuring the ratio.

The device of the present invention includes a tubular chamber member whose inner surface is a helical surface supported by a bearing parallel to the flow direction in a consolidated casing, and a tubular chamber member whose inner surface is a helical surface supported parallel to the axis by another bearing. and a spindle having a helical outer surface and a rope-shaped cross section and connected thereto. The other parts of the device are preferably rotary motion transmission means suitable for mechanical work, which are gears with shafts, devices for registering rotation, which are preferably impulse markers, and advantageously geared power transmission devices. Rotary motion transmission means ensuring interlocking and decoupling between the tubular chamber member and the spindle.

The inner side of the cross section of the tubular chamber member is an exocycloid in a regular single arch configuration with no internal arc, ie two arcs connected by two parallel lines, and the outer side of the cross section of the spindle is The inner side of the outer envelope of the surfaces resulting from relative motion is an exocycloid in a regular single-arch configuration with no internal arc, or the inner side of the cross-section of the tubular chamber member is an ecyclocycloid in an elongated form. , and the outside of the spindle's cross-section is the inside of the outer envelope of the surfaces resulting from the relative motion of the spindles and is an extended form of the exocycloid. This surface results from the mutual movement of the tubular chamber member and the spindle.

If the arc of each cycloid is the starting point of the fluid, the preferred fluid course and number of threads (Z _p = Z _k +
1) and constant or variable pitch (h _p = (Z _p /
A spindle with a helical outer surface having Z _k )・h _k ) is
An inner surface with a number of threads (Z _k ) and a constant or variable pitch (h _k ) is seated in a helical tubular chamber member.

Although the tubular chamber member and the spindle have the same cross section, in order to increase the amount of momentum that can be transmitted, another interlocking relationship can be created by means of rotary motion transmission means with a rotational ratio i=Z _p /Z _k . Both the pivot shaft or bearing holding the tubular chamber member are fixed to the compact casing of the device.

The thread pitch is 1 for a single start thread, but for a multistart thread, the pitch is given by the thread lead divided by the number of thread starts. The values of Z _p /Z _k shown are the only applicable characteristics. This is because the tubular chamber member and the spindle cannot be assembled by threading them together to different values.

Single helical tubular chamber member with Z _k =1 and number of threads Z _p
Both cross-sections of the spindle combined with the tubular chamber member with =Z _k +1=2 are according to Hungarian invention no.
Unlike the epicycloid disclosed by No. 152,615, which is interrupted by tangential flow, it has the advantage of maximum available volume with minimum wetted surface. The narrower the wetted surface, the more efficient the pump or vice versa. A given volume of liquid or gas directed through the pump has the effect of obtaining maximum mechanical force on the short shaft 15.

As a result of the tubular chamber member and the spindle, which are separated from each other by a small distance Δd, forming a helical surface, the cross section of the tubular chamber member is offset by a small angle Δφ, and the spindle cross section is offset by an angle Z _k /Z _p ×Δφ.

For this reason, the tubular chamber member and the spindle cross section are offset from each other by an angle (1-Z _k /Z _p )Δd along a small distance Δd. As a result of the relative torsion between the tubular chamber member and the spindle with constant and variable pitch,
Volumes (gaps) of the same or different length are left for fluid transport.

This volume is repeated in phase and at a constant or constantly changing distance from each other due to the intermingling of the torsions of the tubular chamber member and spindle.

For the inlet and outlet sides of the device of the invention:
It is necessary to design the tubular chamber member and the spindle to be longer than the closed volume.

When the device according to the invention is operated, the tubular chamber member rotates n _k times by changing the interlocking relationship or by means of separate rotary transport means, the spindle n _p = (Z _k /Z _p )
n _k rotations, which is confirmed by the preferred gear ratio of the gears. While gear drive is not a particular concern in other flow devices, in the present invention the desired angular velocity of the spindle is determined by the cooperation of the spindle and the space-enclosing surface of the tubular chamber member such that the fluid delivered into the volume is rotated. It moves forward in the axial direction at a constant speed V=n _k ·h _k =n _p ·h _p or at a variable speed without deformation or volume change or with deformation and volume change.

Generally, such a tubular chamber member and the spindle are subject to wear due to strong friction, and the movement of the two is likely to be inhibited by the resulting powdery substances. However, by coordinating the rotational movement of the tubular chamber member and the spindle according to the invention as shown in FIG. 1 by means of a gear drive, said disadvantages can be avoided.

The device according to the invention does not have any vibration-generating parts. As a result of the multi-start tubular chamber member and spindle being symmetrical in each section about the appropriate axis, the single helical tubular chamber member and spindle must be able to rotate appropriately dynamically about the axis. .

FIG. 1 shows the structure of a device according to the invention, which device can be usefully used as a pump, hydraulic engine, compressor or gas engine.

A bearing 3 supporting a sling-like exocycloid tubular chamber member 2 consisting of a single arc and a bearing 5 supporting an elliptical cross-section spindle 4 are composed of a bearing 5, a guide cone 6, and a streamlined pivot rod 7. It is fixedly connected to the casing 1 with dimensions that produce the effective pressure of the device. The gear periphery 8 rotating together with the tubular chamber member 2 and the gear periphery 9 rotating together with the spindle 4 ensure synchronized rotation of the tubular chamber member 2 and the spindle 4 by means of two gears fixed on the intermediate shaft 10. There is.

The annular transition piece 11 rotates together with the tubular chamber member, thereby ensuring favorable flow conditions between the ring-shaped opening of the reduced diameter opening 12 and the epicycloidal opening of the tubular chamber member 2. The spindle neck 13 rotating together with the spindle 4 ensures favorable flow conditions between the elliptical cross-section of the guide cone 6 and the spindle 4.

The spindle neck 13 and the gear peripheral edge 9 are connected by vanes 14. The pitch of the vanes 14 is necessary to reduce the flow resistance between the axially traveling fluid and the rotating vanes 14.

The short axis 15 of the intermediate shaft 10 is used to receive the mechanical work resulting from the use of the device.

FIG. 4 shows a device according to the invention used as a flow meter.

In this device, a gear 16 with "Z" teeth and an internal gear 17 with "2Z" teeth mesh between the single threaded tubular chamber member 2 and the spindle 4. gear 1
The bearing of the short shaft 19 that supports the shaft 6 and the annular displacement piece 11 are connected by a vane 18. spindle 4
is fixed to the pivot shaft 20 together with the internal gear 17. Sensor 22 arranged on the annular transition piece 11
An impulse generator comprising a disk 21 and a disk 21 is used to sense and properly transmit a change proportional to the volume of the flowing fluid remotely.

The operation of the device described above is made clear by the structure. If a liquid or gaseous medium retaining kinetic or pressure energy is forced to flow through the device, the spindle and tubular chamber member begin to rotate and the rotational motion is unified by the output shaft which is coupled to the spindle by means of gears. can drive two machines. It also operates in the opposite direction. The work capacity of the fluid can be increased by coupling the short shaft with a drive and convenient machinery.

The device is suitable, for example, for use as a liquid pump, a plastics extruder, a compressed draft fan or a gas exhaust machine, a hydraulic engine, a gas engine.
Furthermore, it is suitable for use as a flow meter, advantageously similar to a flow gas volume meter, as a measuring device, supplemented with other necessary equipment known per se.

[Brief explanation of the drawing]

FIG. 1 of the accompanying drawings shows a longitudinal section through a device with a single helical tubular chamber member and a double helical spindle.
Figure 2 is a cross-sectional view taken along line A-A in Figure 1.
Figure 3 is a cross-sectional view taken along line BB in Figure 1.
The thin line is a cross-sectional view along the line CC, and FIG. 4 is a longitudinal cross-sectional view of the device with the impulse generator. 1... Casing, 2... Tubular chamber member, 3... Bearing,
4... Spindle, 5... Bearing, 6... Guide cone, 7
...Streamline shaft support rod, 8, 9...Gear periphery, 10...Intermediate shaft, 11...Annular transition piece, 12...Reduced diameter opening, 13...
Spindle neck, 14...Blade, 15...Short axis, 16
... Gear, 17 ... Internal gear, 18 ... Vane, 19 ... Short shaft, 20 ... Pivot shaft, 21 ... Disc, 22 ... Sensor.

Claims (1)

[Claims] 1. An axial multipurpose flow device comprising: a casing having an inlet and an outlet disposed along an axis;
a tubular chamber member with an inner spiral shape parallel to the axis, having a number of screw threads _Zk and rotatable around its axis; a spindle with an outer spiral shape; the spindle parallel to the axis and rotatable around the axis; and rotational movement transmission means ensuring interlocking and decoupling between the spindle and the tubular chamber member, the mounting means comprising bearings arranged respectively at the inlet and outlet and a guide cone for each bearing. and the spindle has a number of threads Z _p = Z _k
+1, and the pitch of the thread is Z _p /Z _k times the pitch of the tubular chamber member, and the rotational angular velocity of the spindle is Z _k /Z _p times the rotational angular velocity of the tubular chamber member. Axial flow multi-purpose flow device featuring: 2. The inner side of the cross-section of the tubular chamber member is an epicycloid of regular single-arch configuration with no inner arc, and the inner side of the outer envelope of the surface resulting from the relative movement of the spindle is regular with no inner arc. 2. The device of claim 1, which is an epicycloid of single arch configuration. 3. The inner side of the cross-section of the tubular chamber member is an elongated exocycloid, and the inner side of the outer envelope of the surface resulting from the relative movement of the spindle is an elongated exocycloid. The device according to scope 1. 4. The apparatus of claim 1, wherein said tubular chamber member has a constant pitch. 5. The apparatus of claim 1, wherein said tubular chamber member has a variable pitch.