JPS61200304A - Rotary piston engine - Google Patents

Abstract

PURPOSE:To improve the discharge efficiency of a working fluid ever so better, by installing an opening part of an outflow passage to be formed in a flank surface of a rotor, in a position more rearward than the central part of the flank surface, in case of an engine bearing the above caption, provided with the almost equilaterally triangular rotor being eccentrically rotated. CONSTITUTION:A rotary shaft 5 is rotatably supported on bearings inside a two-joint, three-leaf type rotor housing 2 provided with two suction ports 1a and 1b, and an almost equilaterally triangular rotor 8 is pivotally supported free of rotation by crank arms 6 and 6 solidly formed at both sides of the central part of this rotary shaft 5. With rotation of this rotary shaft 5, the rotor 8 is eccentrically rotated through engagement between an internal gear 9 and a fixed gear 10, whereby displacement in an operating chamber 12 is made so as to be continuously alterable. And, at the above-mentioned, on each flank surface 11 of the rotor 8, an opening part 19 is formed in a more frontward position than the central part of the flank surface 11, an this opening part 19 is made to be connected to the outside via a rotor inflow passage 10, a cylindrical empty chamber 15 and a rotary shaft inflow passage 16.

Description

Detailed Description of the Invention [Objective of the Invention] (Industrial Application Field) The present invention relates to a rotary piston engine in which a substantially equilateral triangular rotor is housed in a two-node trilobal rotor housing for eccentric rotation. It is related to.

(Prior Art) Conventional rotary piston engines of this kind, for example, rotary piston type compression engines, in order to obtain high discharge pressure, provide a discharge boat in the rotor housing housing the rotor, and connect the discharge port 1 to the rotor housing. There was one with a reed valve attached. This reed valve closes the flow path by bending an elastic plate and pressing its back against the discharge boat.As the rotor rotates, the reed valve creates an operating chamber formed by the inner surface of the rotor housing and the flank surface of the rotor. When the pressure increases and exceeds a certain pressure, the elastic plate is pushed back and the flow path of the discharge port 1- is opened.

(Problems to be Solved by the Invention) However, in such a rotary piston engine, the discharge boat, the valve, and the suction port are attached to the rotor housing, so there is a drawback that the entire engine becomes large.

This invention is an attempt to solve such problems.

[Structure of the invention]

(Means for Solving the Problems) The configuration of the present invention is such that a substantially equilateral triangular rotor is accommodated in a two-node, three-lobed rotor housing so as to rotate eccentrically, and the inner surface of the rotor housing is accessed from the outside of the rotor housing. and a rotary piston engine in which an inflow passage leading to a working chamber formed by a flank face of the rotor is formed in the rotor, and an opening of the inflow passage formed in the flank face is It is a rotary piston engine characterized by being located forward of the center of the flank surface.

(Operation) The operation of the rotary screw engine of the present invention is such that a substantially equilateral triangular rotor is housed in a two-section, three-lobed rotor housing so as to rotate eccentrically, and from the outside of the rotor housing,
In a rotary piston engine in which an inflow passage leading to a working chamber formed by an inner surface of a rotor housing and a flank face of the rotor is formed in the rotor, an opening of the inflow passage formed in the flank face is connected to the rotation of the rotor. Since this rotary piston engine is characterized by being located forward of the central portion of its flank face with respect to the direction of rotation, the fluid within the working chamber is efficiently discharged to the outside of the rotor housing.

(Embodiment) An embodiment of the present invention will be described with reference to the drawings in the case of a rotating biscuit type compression engine. As shown in Fig. 1-2, a rotor housing 2 in the form of a two-node trilobal shape with two suction bows 1a and 1b is provided with a rotating shaft with a driven gear 4 screwed at one end by a bearing 3.3. A shaft 5 is pivotally supported, and crank arms 6, 6 are integrally formed on both sides of the center of the rotating shaft 5, and a bearing 7.7 is mounted on the crank arm 6.6.
A substantially equilateral triangular rotor 8 is rotatably supported via the
An internal gear 9.9 is installed on the back side of the rotor 8, and this internal gear 9.9 meshes with fixed gears 10, 10 fixed to the rotor housing 2 while being loosely fitted to the rotating shaft 5. has been done. Therefore, when the rotating shaft 5 rotates, the rotor 8 rotates eccentrically with its internal gears 9, 9 meshing with the fixed gears 10 and 10 of the rotor housing 2, and due to the eccentric rotation, the inner surface of the rotor housing 2 and the The volume of the working chamber 12 formed by the flank surface 11 of the rotor 8 is changed.

Next, at the center of the rotating shaft 5 in the thrust direction, a substantially semi-cylindrical valve body 1 is provided which protrudes on the opposite side from the center of gravity of the rotor 8.
3 is integrally molded, and its valve body 13 rotates once every time the rotor 8 rotates one-third of the way. A cylindrical cavity 15 is formed concentrically with the rotation axis. Further, the rotor housing 2 is attached to the rotating shaft 5.
A rotary shaft inflow passage 16 is formed to connect the outside of the rotary shaft 5 and the cylindrical cavity 15, and a chamber 17 is airtightly attached to the rotor housing 2 so as to cover the open end of the rotary shaft inflow passage 16 provided in the rotary shaft 5. At the same time, a suction boat 18 is provided at one end of the chamber 17.

On the other hand, each flank surface 11.11111 of the rotor 8 has a
1. An opening 19. is located in front of the center of the IL 11.
19.19 are formed and rotor inlet channels 20.20.20 are formed from the cylindrical cavity 15, which respectively lead to the openings 19.19.19. In addition, the valve body 13
can also be used as a balance weight for the rotor 8, and when the rotor 8 rotates, the balance of the load applied to the rotating shaft 5 and the bearings 3, 3 can be adjusted.

Next, the position of the discharge port 1 and the movement of the opening 19 of the rotor inlet passage 20 in this embodiment will be explained with reference to FIGS. 3 to 6. This shows the state when the rotating shaft 5 is rotated clockwise.

In the state shown in FIG. 3, three working chambers A are formed by the inner surface of the rotor housing 2 and the outer surface of the rotor 8, each provided with a first discharge port a and a second discharge port 1b.
B and C are formed, and the working chamber A in the upper left on the sign screen (the same applies hereafter) has outside air inlet port 18 (second
(See figure) 1 rotation shaft inflow path 165 This is an intake chamber where air is being drawn from the rotor inflow path 20 through the cylindrical cavity 15, and the working chamber B in the upper right is a compression chamber whose volume is gradually being reduced. The fluid compressed in the working chamber B is discharged from the discharge ball 1.1a, and the lower working chamber C has just completed suction from the rotor inflow path 20, and the volume of the working chamber C is This shows the intake chamber at its maximum, just before compression.

When the rotating shaft 5 further rotates clockwise, the volume of the upper left working chamber A is further expanded, and outside air is sucked into the working chamber A from the rotor inflow passage 20, as shown in FIG. The volume of the working chamber B is further reduced, the pressure is further increased, and the chamber B is subsequently discharged from the first discharge bow 14a. The lower right working chamber is the rotor inlet passage 2.
Inhalation starts from 0 and a new intake chamber is formed, and the working chamber C on the lower left has just been replaced by a compression chamber, and the volume of that working chamber C is gradually reduced, and the air is compressed in that working chamber C. The fluid is discharged from the second discharge port 1b.

When the rotating shaft 5 further rotates clockwise, the volume of the upper working chamber A reaches its maximum as shown in FIG.
Inhalation from 0 continues to be performed, the volume of the lower left working chamber C is further reduced, the pressure is further increased, and the air is subsequently discharged from the second discharge bow 1-1b.

When the rotating shaft 5 further rotates clockwise, a new working chamber E is formed at the upper left as shown in FIG. 6, and suction from the rotor inflow path 20 begins, forming a new intake chamber.

The upper right working chamber A is replaced with a compression chamber, and the fluid compressed in the working chamber A is discharged from the first discharge bow Ha. In the lower right working chamber, suction from the rotor inflow passage 20 continues, and in the lower left working chamber C, the volume is at its minimum, the pressure is at its highest, and it is discharged from the second discharge boat 1b. .

Although this embodiment describes a compression engine, it goes without saying that this rotary visline engine can also be used as an expansion engine.

〔Effect of the invention〕

Since the rotary piston engine of the present invention has the above-described configuration, not only can the engine itself be made smaller, but also the opening of the inlet passage formed in the flank face is oriented in the direction of rotation of the rotor. Since it is located forward of the center of the flank surface, the fluid within the working chamber can be efficiently discharged to the outside of the rotor housing.

Further, in the present invention, if the valve body of the valve provided in the flow path within the rotor is also used as a balance weight attached to the rotating shaft, it is possible to further reduce the size of the engine.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional view, FIG. 2 is a sectional view taken along line xx' in FIG. 1, and FIGS. 3 to 6 are longitudinal sectional views showing the movement of the engine. It is. 2 ... Rotor housing 8 ... Rotor 11 ... Flank surface 12 ... Working chamber 16 ... Rotating shaft inflow path 19 ... Opening 20 ... Rotor inflow path = 10-port) Kiriha-ku Josunho

Claims (1)

[Claims] (1) A substantially equilateral triangular rotor is housed in a two-node, three-lobed rotor housing so as to rotate eccentrically, and from the outside of the rotor housing to the working chamber formed by the inner surface of the rotor housing and the flank surface of the rotor. A rotary piston engine in which a communicating inflow passage is formed in the rotor, characterized in that the opening of the inflow passage formed in the flank face is located forward of the center of the flank face with respect to the rotational direction of the rotor. A rotating piston engine.