JPH04500111A - rotary positive displacement machine - 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] rotary positive displacement machine Technical field The present invention relates to mechanical engineering, and more particularly to rotary expansion machines.

Background of the invention Hydraulic vane with a casing containing a rotor with a cam-shaped end face and an axis The machine (SU, A, 819363) is known. The casing receives the action of a spring. a groove is provided for receiving a radially extending vane for axial movement; There is. When the rotor is rotated by the drive motor, the cam end face of the rotor is constantly pressed. The pressing blades reciprocate to produce regular changes in the amount of pressure and the suction chamber. wing plate divides these working chambers and is the ratio of the fluid volume used to the maximum volume of the working chamber. The volumetric efficiency is determined by the nature of the sealing between the blade end face and the rotor cam end face. circle. However, it is difficult to provide effective sealing material on the narrow end faces of the blades. Therefore The volumetric efficiency of this conventional machine is relatively low.

A rotary positive displacement pump (SU, A, 877129) is also known. This volumetric type The pump includes a casing having an inner spherical surface mated by an outer surface of the vanes. wings The plates have power take-off shafts extending at an angle to each other and along the axis of symmetry of the blades. It is provided.

It also has a partition that extends along the diameter and whose outer surface is mated to the inner surface of the casing. Ru. The diametrical surface of the partition is provided with a support member for the vane and a sealing material housed in the groove. It is. This machine has improved volumetric efficiency. The reason is that it is directly inside the casing. This is because the effective volume of the working chamber having the same diameter increases. But the action chamber Providing a sealing material that occupies a portion of the effective space has the potential to increase volumetric efficiency. descend. In addition, the seal line on the diameter surface is long and extremely complex, making it a reliable seal. It's difficult to play.

Summary of the invention The present invention increases the effective volume of the working chamber and the inner surfaces of the vanes, partitions and spherical casing. Volumetric efficiency was improved by reducing the length of the lines where the surfaces connect to each other. The aim is to provide a rotary displacement machine.

The present invention, which achieves the above, provides a casing having a spherical internal space for accommodating a rotor. The rotor is a rotary displacement machine with a spherical internal space. A circle that rotates around the circle and defines a pair of mutually independent compartments. A plate-shaped partition and a partition that extends on two planes perpendicular to each other on both sides of the partition. The seeds are inserted into the partition and sealed between the partition and the inner spherical surface of the casing. a pair of vanes defining a working chamber of variable volume, each vane defining a working chamber of variable volume; The power output shaft is fixed to the output shaft, and the axes of the power output shaft extend at an angle to each other. According to the invention, the discs intersect with each other at the center of the spherical internal space. The disk-shaped partition is a continuous body, and the grafted connection part for each wing plate is in the diametrical direction of the disk-shaped partition. , a cylindrical projection extending in the direction, and a cylindrical projection provided at the end of the wing plate and mating with the cylindrical projection. The axis of the cylindrical protrusions on both sides of the partition extends on the same plane. It is a rotary displacement machine.

The axes extend on the same plane on both sides of the partition and are orthogonal to each other at the center of the partition. A cylindrical projection is provided on the end surface of each wing plate, and a recess that mates with the cylindrical projection is provided on the end surface of each wing plate. When the recess is provided, the recess intersects with the surface of the cylindrical projection over a considerable area. Soft filling (twisted, string-like, tissue, etc.), mechanical sealing material, etc. between the opposing surfaces effective sealing materials can be provided, and these sealing materials cover the effective volume of the working chamber. will not decrease. Improves sealing performance without increasing machine dimensions and reduces the size of the working chamber. Since the effective volume is increased, the volumetric efficiency is improved.

A protrusion is provided at a diametrically corresponding position on the end surface of the wing plate, and the protrusion is located within the installation area of the protrusion. The arc length of the recess is greater than the arc length in the remaining area of the recess, and the partition Conveniently, a recess is provided in the installation area of the projection to accommodate said projection. .

The above structure of the pivot joint between the vane and the partition allows for permanent retention and is reliable. Provides a large retaining surface for a durable seal.

Brief description of the drawing The invention will now be described with reference to embodiments shown in the accompanying drawings.

FIG. 1 is a perspective view of a rotary displacement machine according to the present invention, and FIG. 2 is a perspective view of a rotor and a working chamber. FIG. 2 is a schematic diagram showing dimensional positions.

BEST MODE FOR CARRYING OUT THE INVENTION A rotary displacement machine according to the present invention has a spherical casing and a spherical rotor. It is classified as a rotary displacement machine, and the embodiment shown in Figs. 1 and 2 is a rotary positive displacement pump. It can be used as a rotary expansion engine. below , in this text, the rotary displacement machine according to the present invention is described as an expansion engine. I will explain the case where it works.

The rotary positive displacement machine of the present invention has a half body (Fig. 1 ), the rotor is movable with a disc-shaped partition 2. It is formed by a vane 3.4 connected to a force take-off shaft 5, 5'. each wing plate 3 ゜4 is a part of a sphere defined by a pair of planes that intersect at an acute angle, The line of intersection of the pair of planes extends along the diameter of the nuclear sphere. Inner spherical shape of casing 1 The surface 6 mates with the outer peripheral surface 7 of the partition 2 and with the outer peripheral surface 8.8' of the vanes 3, 4.

The disc-shaped partition 2 rotates around the center of the spherical internal space of the casing 1. and defining a pair of mutually independent compartments within the casing. .

Wing plates 3 and 4 are seeded on both sides of the disc-shaped partition 2, and both wing plates 3 and 4 are similar. each having a spherical outer edge surface 8, 8' and an end surface forming a diametrical outer surface. I can do it. This vane 3.4 lies in two planes perpendicular to each other with respect to the disc-shaped partition 2. Exists.

Cylindrical projections 9, 9' extending in the diametrical direction are provided on both sides of the partition 2, and the cylindrical projections 9, 9' extend in the diametrical direction. The axes a and b of the protrusion 9.9' are the two wheel lines a.

extend on the same plane drawn across b and partition 2 and intersect at the center of the plane of the parentheses. ing. Recesses 10, 10 having medium and low cylindrical surfaces provided on the end surfaces of the vanes 3, 4 ' are mated to the surfaces of the respective cylindrical protrusions 9°9'. Therefore, the blades 3 and 4 are Provided to extend on both sides of the partition 2 and rotated by a power take-off shaft and can be moved relative to the partition 2.

The power take-off shafts 5.5' extend at an angle to each other and along the axis of symmetry of the vanes 3 and 4. each extending towards the outer edge surface 8.8' of the vane 3.4 and passing through a hole in the casing l. There is. The casing 1 includes an inlet hole II, outlet holes 12 and 13, and an inlet hole I4.

The outer peripheral surface 7 of the partition 2, the outer peripheral surface 8, 8' of the wing plate 3.4, and the cylindrical protrusion 9°9' surface, recesses 10, 10' medium-low cylindrical surface covering the entire surface area of each surface. to allow for the use of an auxiliary sealant (not shown), and Thus, the variable volume working chamber 15, 1 defined by the vanes 3, 4 and the partition 2 6.

17 and 18 (Fig. 2) are improved.

FIG. 2 schematically shows the axes c, d of the power take-off shaft 5.5', these axes c, d form an obtuse angle with each other, and the center of the partition 2 is perpendicular to the plane of the partition 2. It extends at an acute angle to the axis OO' through which it passes.

Projections 19, 20 on diametrically opposite parts of the end face of the vane 3.4.

It is convenient to provide 21 and 22. An arc of 10° 10' recess in these protrusions The length is longer than the arc length of the remaining portion of the recess 10, 10'.

In order to accommodate these protrusions 19, 20, 21, 22, the protrusions of the partition 2 are Recesses 23, 24, and 25 are provided at positions corresponding to .

When the disc-shaped partition and the wing plate are assembled, the protrusions 19, 20, 21, and 22 will It is received in a recess and holds the vanes 3, 4 in the pivot joint of the partition 2.

A rotary displacement machine operates as follows. The assembled wing plates 3 and 4 are the partition 2 is pivotally connected to form a rotor housed in the spherical internal space of the casing 1. figure 2 schematically shows the assembled rotor. Detailed explanation of the invention with reference to Figure 1.2 explain. In addition, variable volume working chambers 15, 16, 17, defined by vanes 3.4 18 is shown in FIG. The casing 1 is not shown in Figure 1 to simplify the illustration. Not yet.

A fluid such as a vapor, liquid, gas, etc. is supplied to the initial position of the inlet hole 11 and is e.g. When the chambers 15 and 18 communicate with the inlet hole 11, the inside of these working chambers 15 and 18 The pressure formed in the working chambers 16 and 17 communicating with the outlet holes 13 and 14 larger than This pressure difference generates a force acting on the side of partition 2, resulting in a force acting on the side of partition 2. A force couple is generated that moves the partition 2 around the axis of action. The above movement of partition 2 are the cylindrical projections 9, 9' and the projections 19, 20 of the partition 2.

21, 22, through the recess 10, it is transmitted to the vane plate 3゜4 that rotates the power take-off shaft. It will be done. The working chambers 15, 16, 17 are created by the rotation of the partition 2 and the blades 3.4. , 18 change the position of the working chamber with respect to the inlet hole, and the working chamber 15 is connected to the outlet hole 12. The working chamber 18 is connected to the outlet hole 13, and the working chambers 16 and 17 are connected to the inlet holes 11 and 14, respectively. communicate. Therefore, the pressure in the working chambers 15 and 18 is lower than the pressure in the working chambers 16 and 17. This causes a couple of forces to act on the partition 2, the vanes 3 and 4, and the power take-off shafts 5 and 5'. Ke The positions of the inlet holes 11 and 14 of the housing 1 are determined depending on the amount of fluid supplied to each working chamber. is selected so that is the minimum. In this sense, the fluid supply phase to the working chamber is 90" It is shifted. During the rotation of the partition 2 and the vane 3.4, the inner ball of the casing 1 The mating surface 7.8 and the protrusions 9, 9', and the recesses 10, 10' each other. the working chambers 15, 16, 17 by means of the surfaces that engage with them and the final sealing material.

A good seal of 18 is obtained.

The sealing material does not occupy the effective volume of the working chamber in the rotary positive displacement machine of the present invention. The seal line on the diameter surface is relatively short and uncomplicated, making it a highly reliable seal line. This gives you the flexibility you need.

These advantages increase the volumetric efficiency of the machine.

Industrial applicability The present invention can be used as a positive displacement machine that converts the internal energy of an evaporative fluid into mechanical work. Most effective when used in rotary evaporation engines.

The present invention also applies to compressors, pumps, and fluid motors that compress or pump fluid. It is effective when used.

international search report

Claims (2)

[Claims] 1. Rotating with a casing (1) having a spherical internal space for housing the rotor It is a positive displacement machine, and the rotor rotates around the center of a spherical internal space. A disc-shaped partition ( 2) and extending on two planes perpendicular to each other on both sides of the partition (2). The inner spherical surface of the partition (2) and the casing (1) is fixed to the partition (2). 6) define variable volume working chambers (15, 16, 17, 18) sealed between A pair of vanes (3, 4) are provided, each vane (3, 4) has its own power output. It is fixed to the shaft (5, 5'), and the axes (c, d) of the power take-off shaft (5, 5') are mutually aligned. objects that extend at an angle to each other and intersect with each other at the center of a spherical internal space , the disc-shaped partition (2) is a continuous body and is fixed to each wing plate (3, 4). The connecting portion includes cylindrical projections (9, 9') extending in the diametrical direction of the disc-shaped partition (2); A recess provided at the end of the wing plate (3, 4) and mating with the cylindrical projection (9, 9') (10, 10') and cylindrical projections (9, 9') on both sides of the partition (2). 1. A rotary displacement machine characterized in that the axes (a, b) of the cylinders (a, b) extend on the same plane. 2. Projections (19, 20, 2) are located at diametrically corresponding positions on the end surfaces of the blade plates (3, 4). 1, 22) is provided, and the arc length of the recess (10, 10') within the installation area of the projection is larger than the arc length in the remaining area of the recess (10, 10'), and the partition (2 ) has a projection (19, 20, 21, 22) so as to accommodate the projection (19, 20, 21, 22). , 20, 21, 22) where a recess (23, 24, 25) is provided in the installation area. A rotary positive displacement machine according to scope 1.