JPS59183001A - Fluid contact surface forming apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for forming fluid contact surfaces on blades of rotary impellers, propellers, and the like. In particular, the present invention is for changing and controlling the flow of fluid on the fluid contact surface of a fixed deflector blade of a turbine, rotary impeller, propeller, etc. for pneumatic and hydraulic purposes.

Traditional designs of fluid contacting surfaces such as impellers, propellers, etc. are extremely complex and relatively expensive to design and manufacture.

Therefore, an object of the present invention is to provide a fluid contact surface forming device that has an extremely simple configuration and can be expected to have high performance effects.

Another object of the present invention is to provide a fluid contact surface forming device 41J that achieves the most effective fluid flow rate control.

Specific fX of this invention? Illustratively, the fluid contacting surface comprises a fluid contacting surface created by a generatrix extending radially from an origin on the axis and rotated about the axis from the origin and the radial position, which when rotated rotates at a decreasing angle with respect to the axis. It is configured to move.

These and other objects and features of this invention,
The benefits will become clearer after reading the detailed description and drawings below.

Preferred embodiments of the invention will be described in detail below.

FIG. 1 is an explanatory diagram showing how the fluid contact surface according to the present invention is generated around the origin O of the rotation axis Z.

The generatrix point P defines the radius vector OP, the horizontal axis X extends at right angles to the rotation axis Z, and the angle β is the protrusion OQ of the X axis and the radius vector OP to the XY plane.
An angle Z is formed between the radius vector OP and the XY plane.

The parametric equation defining the curve generated by point P is as follows.

X=lE, 郎β郎2 Y=R,)inβ兜Z Z=R,, &z It is possible to eliminate either of the angles β and Z from the equation by expressing them as other functions.

As is well known, in the XYZ coordinate axes, the origin 0 is at the intersection or origin of the three coordinate axes, and with the angle between the true axis of rotation and the radius OP, denoted as θ, the fluid contact surface that occurs is It is defined as the locus of the generatrix oP. θ=f (A is the angle β
is a function.

for example θ−β or any other function containing a table of discrete values.

A fluid contacting surface according to the invention is a fluid surface generated by a radius vector or generatrix OP rotated from an origin around an axis 2 and between a transverse axis X through a decreasing angle located adjacent and parallel to the axis Z. This is the part. The fluid contact surface can be rotated a complete 90 degrees between the horizontal axis
It is possible to have a complete 180 degree rotation between the horizontal axis X adjacent to the .

The fluid contact surface thus formed may be overlapping or multiplied with a plurality of equivalent fluid contact surfaces in continuous or spaced relation to one another around the axis of rotation.

Thus, a fluid contact surface is formed on the twin or multiple impellers or propellers.

The angle through which the radius or generatrix OP rotates and the angle of rotation about axis Z are either unrelated or each angle is another directly proportional function. Accordingly, the fluid contact surface is actually 1! P.K.
used. The change in the angle through which the generatrix OP rotates is either independent or directly proportional to the rotational speed of the generatrix OP around 17B of the axis Z.

Furthermore, it is assumed that the entire rotation and angular rotation of the axis 2 of the generatrix OP has a constant length. Accordingly, said surface and the blades of an impeller or propeller formed thereby or comprising said surface can be rotated through a virtual spherical or spheroidal shape. The length of the generatrix OP is such that it rotates at an angle and rotates around the axis Z from the origin 0. A fluid contacting surface is thus formed.

Figure 2.3.4 will be explained. A rotary impeller (hereinafter also referred to as a propeller) is composed of vanes formed from a thin metal sheet or other suitable material in an initially flat disk of radius equal to the length of the generatrix OP and is constructed according to the embodiment of FIG. As shown in the example, it has a single radial slit S or a small cutout &R'. The whole or a part of the disk is twisted and curved at the radial slit sides R, R' located at 180 degrees opposite each other and adjacent to the rotation axis ZK of the impeller.

When configuring an impeller using this method, the radius side R of the blade 1,
The slit between R' is of such width that it is virtually equal to the diameter of the impeller shaft 2. and radius sides R, R'
is fixed to the impeller by welding.

Conventional threaded impellers are formed with at least the inner portion of the fluid contacting surface as a normal helix around an axis of rotation, and the helix remains perpendicular to the axis as it travels longitudinally. Many of the impellers then form a helical twist along the radial axis toward the outside. This invention has a substantial feature in that the blades are easily formed in a spiral shape from the origin 0 of the rotation axis Z-h. Therefore,
The inclination angle from the intermediate position of the horizontal axis X, where the generatrix OP of the fluid contact surface is perpendicular to the rotation axis Z, to the axis Z, that is, the vertical position, is the longitudinal surface of the shaft 2 disposed in the axial direction. It decreases as the axis of rotation ZK approaches until they are located adjacent and parallel to each other.

According to the invention, the pitch value n=Z has been chosen as a result of its tight curvature to the main axis of rotation Z of the impeller.

In FIG. 2, the radial radial lines 3 represent equal increments of the angle β in FIG. 1, and the dotted lines 4 add equally spaced sample points from the plane of the X, Y axes.

Under this configuration, as the impeller and shaft around axis Z rotate, a positive axial thrust on the fluid will cause the fluid to move coaxially or move the vehicle, such as an airplane or ship, into its respective fluid (air or water). This is achieved by the fluid contact surfaces of the vanes 1.

The configuration of Figure 2.3.4 shows a single vane, but the secondary secondary vane is located at secondary diametrical opposition as indicated by the dashed line. Through the illustration, when rotating the blade 1 or a plurality of blades 1
rotates in an imaginary circle as shown by the broken line in Figure 4.

6 to 10 of the accompanying drawings will be explained. The twin impellers are equipped with blades 1' of different pitches and different shapes, the blades 1' being made of disc-shaped thin sheet metal, with a gap between the radial sides R and R' as shown in Figure 10. It has a relatively large segment S' cut at .

When the two blades 1' and their common axis 2' rotate again around the axis Z, the blades 1' rotate within an imaginary circle A. This invention is not limited to impellers and propellers. The generatrix OP of that fluid contacting surface is constant, but by changing the length of the interleave of the impeller formation (e.g., a gradual increase to a peak followed by a gradual decrease), or once initially formed as described above. By forming the blades of the impeller with different shapes and different amounts of rotation, the impeller can meet the desired situation. For example, impeller 1
During the ``contour'' rotation, the cylindrical mass can be rotated through the dotted line B in FIG. In other embodiments, the basic spheroid is the main part that fits into the rotating part of the impeller, but it is possible to cut segments of the sphere or spheroid at the ends of the opposing shafts.

It is also possible to make the vertical axis of the impeller virtually the shorter diameter than the true diameter.

The embodiments shown in FIGS. 11 and 12 will be described.

The impeller with twin blades is almost the same as the impeller shown in Figures 6 to 10, but the difference is that the two blades are formed in a thin flat disk configuration, and the shaft end is cut at a T. The shaft 2" separates the blade 1", that is, the intermediate part 1"a.

Experiments with the impeller and its blades according to the present invention have shown that the impeller formed when rotating in one direction provides a more concentrated axial thrust than conventional impellers. This invention has great effects especially when applied in the fields of large and small air circulation, cooling and ventilation fans. Furthermore, the present invention can be applied with beneficial effects in the fields of propulsion of various fluids (for various ships and aircraft) or pumping.

Although this invention has been described with reference to its most preferred embodiment, the specific structure can be variously modified without departing from the spirit and scope of this invention.

[Brief explanation of the drawing]

Fig. 1 is a principle diagram of a mechanism for generating a fluid contact surface of a fluid contact surface forming device according to the present invention, and Fig. 2 is an axial end view of a first embodiment of a blade for an impeller, propeller, etc. according to the present invention. , FIG. 3 is an explanatory view taken along line III-DI in FIG. 2, FIG. 4 is a plan view taken along line rV-IV in FIG. FIG. 7 is a side view in the direction of the arrow ■ in FIG. 6, FIG. 8 is a side view in the direction of the arrow ■ in FIG. 6, and FIG. 9 is a side view in the direction of the arrow
Fig. 10 is an axial plan view of the blade portion in the second embodiment of the same, and Fig. 11 is an end view in the direction of Fig. 1.
, 1"...Blade 2...Shaft 3...Radius line A...Virtual circle 0...・・・・・・Origin OP・・・・・・Generated line −

Claims (4)

[Claims] (1) In a rotating device having a fluid contact surface, the fluid contact surface is formed by a generatrix extending radially from an origin on an axis, and at least one fluid contact surface rotates around the axis from the origin and a radial position. A fluid contact surface forming device comprising: a fluid contact surface forming device which rotates at a decreasing angle with respect to an axis when rotated. / (2) The fluid contact surface forming device according to item 1, wherein the length of the generating line is constant over the entire curved portion on the angle of rotation. (3) The fluid contact surface forming device according to claim 1, wherein the length of the generating line changes by gradually increasing to a peak, and then gradually decreasing. (4) The generatrix is substantially rotated by 180jjf from a position adjacent and parallel to the axis to one side of the origin, i.e., to a position adjacent and parallel to the axis on the other side of the origin. 5. The fluid contact surface forming device according to claim 1, wherein the forming device is an impeller or a propeller and is arranged to rotate around an axis around which a generatrix rotates.