JPH0362890B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a type of rotary engine that rotates a pair of fan-shaped rotors.

[Conventional technology]

Various types of rotary engines have been proposed. For example, Japanese Patent Publication No. 57-36412 discloses an improvement to a well-known rotary engine in which a polygonal rotor rotates planetarily within a casing consisting of a rotary housing with a trochoidal inner surface and guide housings located on both sides of the rotary housing. (hereinafter referred to as conventional example 1). In addition, Japanese Patent Publication No. 55-45721 discloses that a rotor is placed in a first cylindrical chamber which is provided with an inlet for injecting explosive gas and an exhaust port for discharging combustion exhaust, which communicates with the explosion tube, and the top of the rotor is airtight. The first and second explosion chambers are separated from each other by a shielding plate which is rotatably stored so as to be in sliding contact with each other, and which rotates back and forth alternately with each revolution of the rotor. are alternately communicated with the inlet by blocking plates, and a sealing plate whose one end is pivotally supported on the peripheral wall of the first cylindrical chamber between the inlet and the exhaust port is opposed to the inlet so as to be openable and closable. An engine (hereinafter referred to as Conventional Example 2) is described in which the other end of the plate is brought into airtight sliding contact with the outer periphery of the rotor in a state where it is dragged off-center.

Furthermore, Japanese Patent Publication No. 47-37723 discloses that two fan-shaped rotors each having a crown-like curved cross section are arranged so that their rotational axes are parallel to each other and the circumference of one rotor abuts the base of the other rotor. Combine like this,
A fan-shaped rotor engine is described in which these rotors are interlocked through gears and housed in a cocoon-shaped cylinder, and an action chamber is formed by the intersecting rotation of the fan-shaped rotors (hereinafter referred to as Conventional Example 3).

[Problem that the invention seeks to solve]

Among the above conventional technologies, the type of conventional example 1 is widely known and has been put into practical use, but the shape of the casing and rotor is complicated and the machining is troublesome, and the seal between the inner surface of the casing and the rotor is There are problems such as a complicated structure and the need for highly accurate processing.

In addition, since the rotor of the engine of Conventional Example 2 is not a perfect circle, there is a problem in that, as in the case of Conventional Example 1, it takes a lot of work.

The engine of Conventional Example 3 has two fan-shaped rotors of a special shape with a crown curved cross section arranged so that their rotation axes are parallel to each other, and the outer peripheral surface of one rotor is in contact with the base of the other rotor. Since they are combined so that they slide and rotate, as the rotor rotates, the main rotor side space and the auxiliary rotor side space communicate with each other at a certain phase angle, and as a result, the volume in which the intake air-fuel mixture and explosive gas are mixed becomes considerably large. . Furthermore, it is difficult to completely seal between the cylinders and the rotor, and between the cylinders, and there are various problems in that the overall actions of suction, compression, explosion, expansion, and exhaust are not smooth.

[Means for solving problems]

In order to solve the above problems, the present invention includes at least a pair of flat fan-shaped rotors, and at least a pair of flat cylinders that intersect and communicate with each other and rotatably fit the rotors therein. The rotors are interlocked so that the outer circumferential surface of one rotor rotates while being in contact with the outer circumferential surface of the other rotor boss, and as the rotors rotate, the space within each cylinder is contracted and expanded, and at a predetermined phase angle. A rotary engine configuration was adopted in which one cylinder was provided with an intake port and the other cylinder was provided with a combustion chamber near the intersection of the exhaust port and one rotor, so that they communicated directly with each other.

[Effect]

When the rotary engine according to the present invention configured as described above is used as a gasoline engine, when the rotor rotates, the air-fuel mixture taken in from the intake port of one cylinder is compressed in the space between the rotor and the cylinder, and this space is When the cylinder rotates to a predetermined phase angle position, compressed air-fuel mixture is fed into the combustion chamber provided in the other cylinder.

This compressed air-fuel mixture is ignited in the combustion chamber, explodes and expands, and its compression causes the rotor in the cylinder to rotate, which causes the space within the cylinder to communicate with the exhaust port and is exhausted.

By repeating the above action within each cylinder, the rotating shaft rotates continuously.

In each of the above operations, suction and compression are performed in one cylinder, and explosion, expansion, and exhaust are performed independently in the other cylinder, so that the suction mixture and the explosive gas do not coexist. Further, at a timing near the end of the compression process, the space of one cylinder communicates with the combustion chamber of the other cylinder only during that time.

Also, when using it as a diesel engine,
The compressed fuel is pushed into the combustion chamber and is brought to high pressure and high temperature using a high compression ratio and explodes.

[Effect]

Since this invention has the above configuration, in the case of a gasoline engine, when the fuel mixture that is compressed by being pushed into the combustion chamber in one cylinder is ignited and explodes as each rotor rotates in conjunction with each other, the pressure As a result, one rotor rotates, and as a result of the accompanying change in the space capacity within one cylinder, combustion waste gas is discharged from an exhaust port provided in this cylinder.

In the case of a diesel engine, fuel is injected into the compressed air that is forced into the combustion chamber and becomes high-pressure and high-temperature, causing an explosion.

As one rotor rotates to perform the above-described explosive exhaust, the other rotor also rotates. Due to the expansion and contraction of the space volume in the other cylinder due to the rotation of the other rotor, the fuel mixture or air sucked into this cylinder from the intake port of the other cylinder is compressed in the other cylinder, while the air is compressed in the other cylinder. into the combustion chamber inside the cylinder.

By repeating the above action within each cylinder, the rotating shaft rotates continuously.

〔Example〕

The embodiment shown in the drawings is for an internal combustion engine that uses plug-ignited gasoline, etc., and FIG. 1 shows the external appearance, in which a horizontal rotating shaft 2 and a vertical rotating shaft 3 are attached to a casing 1. .

In the cylinder 4 on the rotating shaft 2 side of the casing 1,
A fan-shaped exhaust port 6 centered on this shaft 2 is provided, and a fan-shaped intake port 7 centered on this shaft 3 is provided in the cylinder 5 on the rotating shaft 3 side of the casing 1.

11 and 12 in FIGS. 2 and 3 are rotors fixed to the rotating shafts 2 and 3, respectively. This rotor 1
1 and 12 have a fan shape in which a part of a disk is cut into a fan shape, and the cross-sectional shape in a plane passing through the axes of the rotating shafts 2 and 3 is a boss in which the rotating shafts 2 and 3 are fitted. The thickness of the portions 13 and 14, that is, the length in the axial direction is the maximum, and the portions 13 and 14 have a tapered shape that gradually becomes thinner toward the periphery.

As shown in FIG.
The imaginary line passing through O ₁ is the straight line L ₁ in FIG. 4 that is orthogonal to the axis of the rotating shaft 2, and both side edges 21, 22, 23, and 24 of the end surfaces 17 and 18 are viewed from the front as shown in FIG. 4. When you look at it, it is a straight line passing through the axis of rotation axis 2,
Since the side edges 21 to 24 are lines that intersect both tapered side surfaces of the rotor 11, the end surfaces 17 and 18 are twisted at a steeper angle from the periphery toward the center.

The rotor 12 shown in FIGS. 6 and 7 also has exactly the same shape as the rotor 11. That is, rotor 1
The end surfaces 27 and 28 for the notch portions 2 and ₂ are as shown in FIG.
L ₂ , both side edges 31, 32 of end faces 27, 28,
33 and 34 are straight lines passing through the axis of the rotating shaft 3 when viewed from the top, as shown in FIG. Because of this, the end faces 27 and 28 are twisted at a steeper angle from the periphery toward the center.

Therefore, the end surface 17 of the rotor 11 is in contact with the end surface 27 of the rotor 12 without any gap, and the end surface 18 of the rotor 11 is in contact with the end surface 27 of the rotor 12 without any gap.
Also, it is in close contact with the end surface 28 of the rotor 12 without any gaps.

Further, the outer peripheral surface 37 of the rotor 11 is shaped to contact the outer peripheral surface 40 of the boss portion 14 of the rotor 12 without a gap, and the outer peripheral surface 38 of the rotor 12 is shaped to contact the outer peripheral surface 39 of the boss portion 13 of the rotor 11 without a gap. shall be.

The inner surfaces of each cylinder 4 and 5 are shaped to contact both side surfaces and the outer peripheral surface of the rotating rotor without any gaps, the insides of both cylinders 4 and 5 communicate with each other, the exhaust port 6 communicates with the inside of the cylinder 4, and the cylinder The inside of 5 communicates with the intake port 7.

Further, a part of the area where the insides of the cylinders 4 and 5 intersect is recessed as shown in FIG. 8 to form a combustion chamber, and a spark plug 41 is provided here.

The rotating shafts 2 and 3 are rotated in conjunction with each other in the direction of the arrows in FIGS. 2 and 3 at a ratio of 1:1 by gears or other known transmission means (not shown).

Next, the operation will be explained based on FIGS. 8 to 12. In FIG. 8, a to d show developed cross sections at the intersection of the cylinders 4 and 5, and each of FIGS. Front view, each showing the action in a transverse plan view.

First, a in FIG. 8 and a in FIG.
are in contact with each other, and the combustion chamber A is the smallest, and a fuel mixture (hereinafter referred to as the mixture) is compressed and contained within this chamber A.

In this state, the ignition plug 41 emits a spark, the mixture is ignited and explodes, and the pressure causes the rotor 11 to rotate as shown in Figures 8 b to d and 9 to 12. The inside of the communicating cylinder 5 expands, and the rotor 11 passes through FIGS. 8C and 11 and reaches the positions shown in FIGS. 8D and 12, and the combustion chamber A closes. of waste gas is emitted.

On the other hand, in conjunction with the rotation of the rotor 11 as described above, the rotor 12 also rotates as shown in FIGS. 8a to d and 9 to 12.
0, the outer peripheral surface 38 of the rotor 12 is in contact with the outer periphery of the boss portion 13 of the rotor 11, so that the cylinders 4 and 5 are cut off as shown in FIGS. 8a and 8b.

At the positions shown in Fig. 8a, d, Fig. 9, and Fig. 12, the inside of the cylinder 5 communicates with the intake port 7, and the cylinder 5
Air-fuel mixture is flowing inside. When the rotor 11 further rotates, the outer peripheral surface 37 of the rotor 11
While the cylinders 4 and 5 are in contact with the outer circumferential surface 40 of the boss portion 14 of No. 2, the air-fuel mixture moves inside the cylinder 5, and the air-fuel mixture moves inside the cylinder 5 between FIG. 8d and FIG. 11 to FIG. The air-fuel mixture is pushed into the combustion chamber A, and the air-fuel mixture is pushed into the intake port 7 as shown in Fig. 8d and Fig. 12.
The next air-fuel mixture is sucked in.

Thereafter, the steps shown in FIGS. 8a to 8d and 9 to 12 are repeated.

In the above embodiment, the rotor 11 is used for explosion exhaust and the rotor 12 is used for intake, but as in another embodiment shown in FIG.
Concave portions formed by fan-shaped cuts are provided at two locations with a phase of 180°, and the exhaust ports 6 of the cylinder 4 are also provided at two locations. Each cylinder 5 is provided with an intake port,
In some cases, the rotation speed of the left and right shafts 3 is twice that of the center shaft 2, so that explosion and exhaust are performed twice per rotation in the center rotor 11.

Furthermore, although the above embodiment is an example of a plug ignition type, it can also be applied to a diesel engine that sucks only air from the intake port and injects the fuel in the air that is compressed in the combustion chamber and becomes high pressure and high temperature to ignite and explode. Of course, it can be applied.

〔effect〕

In this invention, as described above, at least one pair of flat fan-shaped rotors is rotatably fitted in at least a pair of flat cylinders that are combined so as to intersect and communicate with each other, and each rotor is connected to one rotor. Since the outer periphery of the rotor is interlocked to rotate while touching the outer periphery of the boss portion of the cut portion of the other rotor, the structure is extremely simple, and the shape of the rotor is also simple, making it easy to work.

Furthermore, sealing of each part of the engine is extremely easy and safe, the action from intake to exhaust is smooth, and the volume of mixture of mixture and explosive gas during each operation is small, thus improving the operating efficiency of the engine. expensive.

In addition, since each rotor takes in, compresses, explodes, and exhausts air by rotating in a fixed direction in conjunction with each other, a complicated valve mechanism is unnecessary and there are no parts that perform reciprocating motion.

Therefore, there are effects such as the elimination of vibrations caused by reciprocating motion.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the external appearance of the rotary engine of the present invention, Fig. 2 is a longitudinal sectional front view of the same, Fig. 3 is a cross-sectional plan view of the same, Fig. 4 is an enlarged front view of one rotor, and Fig. 5. is an enlarged side view of the same rotor, No. 6
The figure is an enlarged front view of the other rotor, FIG. 7 is an enlarged plan view of the same as the above, FIGS. 8 a to d are developed sectional views at the intersection of both cylinders showing each stroke, and FIGS. 9 to 12 13 shows each process, each figure is a longitudinal sectional front view, each figure is a lateral plane view, and FIG. 13 is a longitudinal sectional front view of another embodiment. 1... Casing, 2, 3... Rotating shaft, 4, 5
... Flat cylinder, 6 ... Exhaust port, 7 ... Intake port, 11, 12 ... Fan-shaped rotor, A ... Combustion chamber.

Claims (1)

[Claims] 1 Consists of at least one pair of flat fan-shaped rotors and at least one pair of flat cylinders that intersect and communicate with each other and rotatably fit the rotors therein. The cylinders are arranged so that they rotate in contact with the outer peripheral surface of the other rotor boss, and the space inside each cylinder is contracted and expanded as the rotor rotates, and at a predetermined phase angle, the cylinders are arranged so that they are in direct communication with each other. A rotary engine has an intake port in one cylinder, an exhaust port in the other cylinder, and a combustion chamber near the intersection of one rotor.