JPS61200302A - Rotary piston engine - Google Patents

Abstract

PURPOSE:To let miniaturization in an engine come to fruition, by forming a flow passage, connecting an operating chamber to a rotor housing outer part, in a rotor and installing this flow passage in a valve, in case of an engine bearing the above caption, provided with the 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 1 and 1, 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, such a valve body 13 as rotating a turn at each 1/3 rotation of the rotor 8 is solidly formed in the central part of the rotary shaft 5, and with this valve body 13, inter-connection between rotor flow passages 16 and a rotary shaft flow passage 17 is made possible to be opened or closed at will.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) This invention relates to a rotary piston engine that rotates a rotor eccentrically within a rotor housing.

(Prior Art) Conventional rotary piston engines of this type, for example, rotary piston type compression engines in which a substantially equilateral triangular rotor is rotated eccentrically within a two-section, trilobal rotor housing, are designed to A discharge boat was installed in the rotor housing housing the rotor, and a reed valve was attached to the discharge boat.

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 valves 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 lL'Ja point) The structure of the present invention is that in a rotary piston engine that rotates a rotor eccentrically within a rotor housing, a working chamber formed by the inner surface of the rotor housing and the flank surface of the rotor. , a rotary piston engine characterized in that a flow passage connecting the rotor housing to the outside is formed within the rotor, and a valve is provided in the flow passage within the rotor.

(Function) The rotary piston engine of the present invention rotates the rotor eccentrically within the rotor housing. A flow path connecting the rotor to the outside is formed within the rotor, and a valve is provided in the flow path within the rotor, so that the entire engine can be downsized.

(Example) An example of the present invention will be described with reference to the drawings in the case of a rotary piston type compression engine. As shown in Figure 1-2, there are two suction ports 1. A rotating shaft 5 with a driven gear 4 screwed to one end is pivotally supported by bearings 3, 3 in the rotor housing 2, which has a two-section, three-lobed shape. Each crank arm 6.6 is integrally formed, and a substantially equilateral triangular rotor 8 is rotatably supported on the crank arm 6.6 via bearings 7, 7, and internal teeth are provided on the back side of the rotor 8. A gear 9.9 is installed, and the internal gears 9, 9 are meshed with a fixed gear 0.10 fixed to the rotor housing 2 while being loosely fitted to the rotating shaft 5. Therefore, when the rotating shaft 5 rotates,
The internal gears 9, 9 are connected to the fixed gear 1 of the rotor housing 2.
The working chamber 1 formed by the inner surface of the rotor housing 2 and the flank surface 11 of the rotor 8 is rotated eccentrically while meshing with the rotor 8.
The volume of 2 can be changed.

Next, a substantially semi-cylindrical valve body 13 is integrally formed in the center of the rotary shaft 5 and protrudes on the opposite side from the center of gravity of the rotor 8. The rotor 8 rotates once every time it rotates, and a cylindrical cavity 15 that is concentric with the rotation axis of the valve body 13 is formed inside the rotor 8 that closely faces the outer peripheral surface 14 of the valve body 13. , rotor channels 16, 16, 16 are formed from the flank surfaces 11, 11.11 of the rotor 8, respectively, leading to the cylindrical cavity 15, and the rotor shaft 5 is connected to the cylindrical cavity 15 and the rotor housing. A rotary shaft flow path 17 is formed that connects the outside of the two.

Furthermore, a chamber 18 is airtightly attached to the rotor housing 2 so as to cover the open end of the rotary shaft passage 17 provided in the rotary shaft 5, and a discharge port 19 is provided at one end of the chamber 18. There is. Further, the valve body 13 can 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 bearing 3.3 can be adjusted. .

Next, the movements of the rotor 8 and the valve body I3 in this embodiment will be explained with reference to FIGS. 3 to 6. This shows the situation 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, in which the first suction port Lla and the second suction port 1b are respectively provided, and the outer surface of the rotor 8.
, B, and C are formed, and on the signal surface (
The working chamber A in the upper left is an intake chamber where outside air is being sucked in from the first suction chamber 1a, 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 led from the working chamber B to the cylindrical cavity 15 through the rotor flow path 16,
It is discharged from the cylindrical cavity 15 through the rotary shaft flow path 17 to the discharge port 19 (see Fig. 2), and is discharged from the lower working chamber C.
2 shows the intake chamber where suction from the second intake bow Hb has just been completed, the volume of the working chamber C has reached its maximum, and the state is immediately before compression.

When the rotating shaft 5 further rotates clockwise, the volume of the upper left working chamber A is further expanded, as shown in FIG. The volume of the working chamber B in the upper right is further reduced, the pressure is further increased, and the fluid is subsequently discharged from the discharge port 19 (see FIG. 2) through the rotary shaft flow path 17. In the working chamber C at the lower right, suction begins as if it were the second suction chamber, and a new intake chamber is formed, and the working chamber C at the lower left replaces the compression chamber.

When the rotary shaft 5 further rotates clockwise, the volume of the upper working chamber A reaches its maximum as shown in FIG. As suction continues, the rotor flow path 16 in the lower left working chamber C is opened by the rotation of the valve body 13 in the rotor 8, and the compressed fluid in the working chamber C passes through the rotor flow path 16 and enters the cylindrical cavity. 15, and is discharged from the cylindrical cavity 15 through the rotating shaft passage 17 and from the discharge boat 19 (see FIG. 2).

When the rotary 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 first intake port A begins and a new intake chamber is formed.

The upper right working chamber A is replaced by a compression chamber, the lower right working chamber continues to receive suction from the second suction bows 1 and 1b, and the lower left working chamber C has the smallest volume and the highest pressure. hand,
It passes through the rotating shaft flow path 17 and is discharged from the discharge boat 19 (see FIG. 2).

In this embodiment, fluid is drawn into the working chamber 12 through a suction port 1.1 provided in the rotor housing 2, and the working chamber 1.
This is a rotary vis-line type compression engine in which the compressed fluid compressed at 2 passes through the rotor 8 and is discharged to the outside of the rotor housing 2. However, as shown in FIG. It passes through the rotating shaft flow path 17 and is guided to the cylindrical cavity 15 in the rotor 8, and from the cylindrical cavity 15 it passes through the rotor flow passage 16 and is drawn into the working chamber 12.
When the compressed fluid compressed in the rotor housing 2 is discharged from the discharge port [9, 19 provided in the rotor housing 2, the opening position of the rotor flow passage 16, 16, 16 provided in the rotor 8 is set according to the rotation direction of the rotor 8. This can also be carried out by displacing it to the side.

Furthermore, although these embodiments have been described with respect to a compression engine, it goes without saying that this rotary piston 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, the engine itself can be miniaturized.

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 the drawing]

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. , FIG. 7 is a sectional view showing another embodiment. 2... Port=tahousing 8... Rotor 11... Flank surface 12... Working chamber 13... Valve body 16... Rotor flow path 17... Rotating shaft flow path -10 = Sentry castle shoes

Claims (1)

[Claims] (1) In a rotary piston engine that rotates a rotor eccentrically within a rotor housing, there is a flow path within the rotor that connects the working chamber formed by the inner surface of the rotor housing and the flank surface of the rotor with the outside of the rotor housing. A rotary piston engine characterized in that the rotor is formed in a rotor, and a flow path within the rotor is provided with a valve.