CN210829478U - Rotary engine - Google Patents

Abstract

The rotary engine is provided with a base, a main shaft, a rotor, a cylinder cover and a piston, wherein the rotor and the cylinder cover are configured to form an annular sealed cylinder, the rotor is provided with a containing groove, the piston is arranged in the containing groove, when the rotor rotates, a roller on the containing groove slides along the inner periphery of a limiting plate, so that the piston does periodic intermittent reciprocating motion in the containing groove, a combustion chamber is formed between a second sealing plate and a first sealing plate when the piston moves upwards, and an exhaust port is arranged on the cylinder cover of the first sealing plate on the side deviating from the combustion chamber; the rotary engine is externally provided with an intake stroke and a compression stroke, only a power stroke and an exhaust stroke are carried out in the cylinder, the combustion expansion force of combustible gas is directly converted into driving torque, useless connecting rod linear motion of a reciprocating engine crank sliding block mechanism is cancelled, the rotary engine under the same power is small in structural size, light in weight and low in vibration and noise.

Description

Rotary engine

Technical Field

This scheme relates to engine technical field, concretely relates to rotation type engine.

Background

Internal combustion rotary engines combust a mixture of air and fuel to produce mechanical power that is used to produce work. The basic components thereof are well known in the art and preferably include a rotary engine block, cylinder head, cylinders, pistons, valves, crankshaft, and one or more camshafts. The cylinder head, cylinder and piston crown form a variable volume combustion chamber into which fuel and air are introduced and in which combustion takes place as part of the thermodynamic cycle of the device. In all internal combustion rotary engines, useful work is generated from the hot gaseous products of combustion acting directly on movable rotary engine components such as piston crowns or crowns. Generally, the reciprocating motion of the piston is converted into rotational motion of the crankshaft via a connecting rod. One known internal combustion engine operates in a four-stroke combustion cycle, wherein a stroke is defined as the complete movement of a piston from a Top Dead Center (TDC) position to a Bottom Dead Center (BDC) position, and vice versa, and the stroke includes intake, compression, work, and exhaust.

Additionally, rotary internal combustion engines are commonly included to power automobiles, aircraft, watercraft, stationary engines, and compressors. A rotary internal combustion engine comprises a rotary piston or rotor rotatably mounted within a cavity in a housing or stator, in a particular form in which the wankel engine is a rotary internal combustion engine in which the stator comprises a two-lobed, outwardly-extending rotary bore and end plates located at opposite longitudinal ends of the bore to define a cavity therein. The walls of the cavity are provided with inlet and exhaust ports for air and exhaust gases, respectively. The rotor of a wankel engine includes three rotor perimeters in the shape of generally equilateral triangular cross-sections with outwardly curved sides.

In contrast, only one radial sealing sheet is arranged between adjacent containing cavities of the triangular rotor engine, the radial sealing sheet is always in line contact with the cylinder body, and the contact position of the radial sealing sheet and the cylinder body is always changed, so that three combustion chambers are not completely isolated (sealed), and the radial sealing sheet is quickly worn. After the engine is used for a period of time, the air leakage problem is easily caused by the abrasion of an oil seal material, and the oil consumption and pollution are greatly increased. Its unique mechanical structure also makes such engines difficult to maintain.

On the basis of the prior art, an improved rotary engine is provided.

SUMMERY OF THE UTILITY MODEL

The utility model provides a rotary engine only carries out power stroke and exhaust stroke in the cylinder, directly turns into the drive torque with the combustion expansive force of combustible gas, and this rotary engine of same power is small in size, light in weight, and vibration and noise are lower moreover.

In order to realize the purpose, the utility model discloses the technical scheme who takes is:

a rotary engine comprises

A main shaft, a rotor, a cylinder cover, a base, a piston mechanism and a roller,

the rotor is a wheel-shaped body with an arc-shaped concave part in the circumferential direction, the wheel-shaped body is arranged on the main shaft, and at least one radial accommodating groove is formed in the radial direction of the rotor;

a cylinder head which is a thin-walled body having an arc-shaped convex portion in the circumferential direction and is disposed on the rotor, wherein when the cylinder head is disposed on the rotor, an annular seal is formed between the concave portion and the convex portion; the cylinder cover is provided with first sealing plates which are matched with the outline of the cylinder in the radial direction, the number of the first sealing plates is the same as that of the accommodating grooves, the first sealing plates are provided with air inlet pipes, oil injection pipes and ignition devices, and the cylinder cover between the adjacent first sealing plates is provided with an exhaust port;

the spindle is arranged on the base, and limiting plates which are fan-shaped and not more than the number of the accommodating grooves are arranged on the inner walls of the two sides of the base, which are connected with the spindle;

the piston mechanism is arranged in the accommodating groove and comprises a second sealing plate matched with the outline of the cylinder, an elastic piece and a roller, wherein one end of the elastic piece is connected to the bottom of the second sealing plate, and the other end of the elastic piece is connected to the main shaft;

the rollers are arranged on two sides of the second sealing plate and can slide along the inner periphery of the limiting plate, so that the piston can do periodic intermittent reciprocating motion in the accommodating groove, and a combustion chamber is formed between the second sealing plate and the first sealing plate when the piston mechanism moves upwards.

Further, in the above rotary engine, the cylinder profile is elliptical.

Further, foretell rotary engine, the holding tank sets up to 1 ~ 4, and corresponding first closing plate and piston mechanism quantity set up rather than corresponding.

Further, in the rotary engine, the exhaust port is formed in the cylinder head of the side, away from the combustion chamber, of the first sealing plate, and the adjacent exhaust ports are spaced by the distance between the two first sealing plates.

Further, in the rotary engine, sealing means are provided between the rotor and the cylinder head, between the first sealing plate and the recess, and between the second sealing plate and the cylinder.

Further, in the above rotary engine, the elastic member is a spring.

The embodiment of the utility model provides a beneficial effect lies in:

1. compared with a reciprocating engine, the reciprocating engine does not use a crank-slider mechanism, combustible gas expansion pressure is directly applied to the side face of the second sealing plate of the piston, so that the second sealing plate is pushed to the center of the eccentric shaft, and the movement is carried out under the action of two component forces, namely a centripetal force pointing to the center of the main shaft and a tangential force enabling the main shaft to rotate. In other words, the combustion expansion force of the combustible gas is directly converted into the driving torque, the useless linear motion of a connecting rod of the reciprocating engine is eliminated, the heat efficiency is improved, and the engine can be arranged in a small size, light in weight and low in manufacturing cost under the same power.

2. The piston moves upwards rapidly after losing the limit of the limit plate, so that the cylinder between the second seal plate and the first seal plate forms a combustion chamber, air intake, oil injection and ignition can be directly carried out on the combustion chamber, the combustion chamber is continuously expanded after combustible gas is combusted and expanded, the cylinder filled with waste gas in the previous working stroke is continuously reduced, and the exhaust stroke corresponding to the combustion gas in the previous working stroke is completed while the working stroke is completed.

3. The second closing plate and cylinder and the limiting plate of piston all adopt face contact, though its position with cylinder and limiting plate contact is changing all the time, face contact can reduce the rate of wear of second closing plate to oil blanket long service life between second closing plate and cylinder, even oil blanket wearing and tearing leak gas, also accessible change second closing plate conveniently maintains.

Drawings

FIG. 1 is an isometric view of an embodiment of a rotary engine of the present invention;

FIG. 2 is a front view of a rotary engine forming a combustion chamber of the present invention;

FIG. 3 is a half sectional view taken along line A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along plane C-C of FIG. 2;

FIG. 5 is a front view of the rotary engine of the present invention completing the exhaust stroke immediately prior to entering the exhaust stroke;

FIG. 6 is a half sectional view taken along plane H-H of FIG. 5;

FIG. 7 is a cross-sectional view taken along plane G-G of FIG. 5;

FIG. 8 is a side view of the rotary engine rotor of the present invention;

FIG. 9 is an isometric view of a rotary engine cylinder head according to the present invention;

fig. 10 is an isometric view of a rotary engine base according to the present invention.

Reference numerals in the drawings of the specification include: the fuel injection device comprises a main shaft 1, a rotor 2, a concave part 20, a containing groove 21, a cylinder cover 3, a convex part 30, a cylinder 4, a first sealing plate 5, an air inlet pipe 6, a fuel injection pipe 7, an exhaust port 8, a base 9, a limiting plate 10, a second sealing plate 11, an elastic piece 12, a roller 13, a combustion chamber 14, an upper arc section 100, a lower arc section 101 and a connecting section 102.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1: refer to FIGS. 1 to 10

This scheme discloses a rotary engine contains

A main shaft 1, a rotor 2, a cylinder cover 3, a base 9, a piston mechanism and a roller 13,

the rotor 2 is a wheel-shaped body with an arc-shaped concave part 20 in the circumferential direction, the wheel-shaped body is arranged on the main shaft 1, and at least one radial accommodating groove 21 is arranged in the radial direction of the rotor 2;

a cylinder head 3 which is a thin-walled body having an arc-shaped convex portion 30 in the circumferential direction and is disposed on the rotor 2, and a cylinder 4 which forms an annular seal between the concave portion 20 and the convex portion 30 when the cylinder head 3 is disposed on the rotor 2; first sealing plates 5 matched with the contours of the cylinders 4 are arranged on the cylinder cover 3 in the radial direction, the number of the first sealing plates is the same as that of the accommodating grooves 21, an air inlet pipe 6, an oil injection pipe 7 and an ignition device are arranged on each first sealing plate 5, and an exhaust port 8 is arranged on the cylinder cover 3 between every two adjacent first sealing plates 5;

the spindle 1 is arranged on the base 9, and the inner walls of the two sides of the base 9, which are connected with the spindle 1, are provided with fan-shaped limiting plates 10, the number of which is not more than the number of the accommodating grooves 21;

the piston mechanism is arranged in the accommodating groove 21 and comprises a second sealing plate 11 matched with the contour of the cylinder 4, an elastic piece 12 and a roller 13, one end of the elastic piece 12 is connected to the bottom of the second sealing plate 11, and the other end of the elastic piece is connected to the main shaft 1;

the rollers 13 are arranged on both sides of the second sealing plate 11 and can slide along the inner periphery of the limiting plate 10, so that the piston performs periodic intermittent reciprocating motion in the accommodating groove 21, and a combustion chamber 14 is formed between the second sealing plate 11 and the first sealing plate 5 when the piston mechanism moves upwards.

As shown in fig. 10: the specific sector-shaped limiting plate 10 comprises an upper arc 100, a lower arc 101 and an inclined connecting section 102 connecting the two, wherein the roller 13 can slide on the lower arc 101 and the connecting section 102.

As shown in fig. 2 to 4: when the rotor 2 rotates, the roller 13 rolls from the lower arc section 101 of the limiting plate 10 to the moment of the connecting section 102, the roller 13 loses the limiting instantly and has the freedom degree of upward movement, at this time, the elastic part 12 of the piston recovers deformation to drive the second sealing plate 11 and the roller 13 to rapidly move upwards in the accommodating groove 21, the second sealing plate 11 which moves upwards enters the cylinder 4 and is matched with the cylinder 4, at this time, a sealed combustion chamber 14 is formed between the second sealing plate 11 and the first sealing plate 5, and under the control of an electronic configuration system, compressed air and combustible gas are respectively sprayed into the combustion chamber 14 through the air inlet pipe 6 and the oil injection pipe 7 and are simultaneously ignited; after ignition, the combustible gas is combusted and expanded in the combustion chamber 14 and enters a power stroke, the expansion pressure of the combustible gas acts on the side surface of the second sealing plate 11, one expansion pressure is a centripetal force pointing to the center of the main shaft 1, and the other expansion pressure is a tangential force acting on the side surface of the second sealing plate 11 to enable the main shaft 1 to rotate. So that it converts the expansion force of the combustible gas into driving torque, and compared with the reciprocating engine, the rotary engine cancels useless linear motion, so that the rotary 2 engine with the same power has the advantages of smaller size, lighter weight, lower vibration and noise and great advantage.

As shown in fig. 5, 6 and 7: along with the combustion and expansion of combustible gas in the combustion chamber 14, the space of the combustion chamber 14 occupied by the cylinder 4 is continuously enlarged, the rotor 2 is driven to rotate by expansion stress, when the rotor 2 rotates to the other side of another limiting plate 10 or the limiting plate 10, at the moment, the roller 13 rolls from the connecting section 102 to the lower arc section 101, when the roller 13 rolls on the inner edge of the limiting plate 10, the elastic member 12 continuously contracts to store energy, after the roller 13 stably enters the lower arc section 101, the contraction of the elastic member 12 is limited, the second sealing plate 11 simultaneously contracts to the accommodating groove 21 of the rotor 2, at the moment, the gas combusted in the previous power stroke is filled in the whole cylinder 4, when the roller 13 rolls from the lower arc section 101 to the connecting section 102 again when the rotor 2 rotates, the roller 13 loses the limiting degree of freedom of upward movement again, when the ascending second sealing plate 11 is engaged with the cylinder 4 again to form the combustion chamber 14 to enter the next power stroke, the combustible gas expands and applies lateral force to the second sealing plate 11 to drive the rotor 2 to rotate, the space of the combustion chamber 14 is continuously expanded, meanwhile, along with the expansion of the space of the combustion chamber 14, the spaces of the rest cylinders 4 are gradually compressed by the second sealing plate 11 and the first sealing plate 5, and the combustion waste gas in the previous power stroke is gradually compressed and is discharged through the exhaust port 8; the cycle is repeated, and the periodic power stroke and the periodic exhaust stroke are realized.

Wherein holding tank 21, piston and limiting plate 10 can set up a plurality ofly, and when setting up a plurality of piston mechanism, rotor 2 rotates the round and can carry out a plurality of power strokes to improve the output of engine, and when next power stroke provided the rotation moment of torsion, carry out the exhaust gas compression and the discharge of last power stroke again, realize that the gas inflation provides the make full use of power, improved engine thermal efficiency.

Example 2: with reference to FIGS. 4 and 7

Compared with the embodiment 1, the difference is that the outline of the cylinder 4 is set to be oval, the outline of the oval cylinder 4 is smooth, so that the first sealing plate 5 and the second sealing plate 11 are in surface contact when in contact with the outline of the cylinder 4, point contact is avoided, the abrasion speed of an oil seal of the second sealing plate 11 can be reduced when the piston does periodic reciprocating motion, air leakage of the combustion chamber 14 is avoided, and the service life of the rotary engine can be prolonged.

Example 3: refer to fig. 1, 3, 6, 8 and 9

Compared with the embodiment, the difference is that the number of the accommodating grooves 21 is 1-4, and the corresponding number of the first sealing plates 5 and the piston mechanisms is correspondingly arranged; in the example, the case that 1 accommodating groove 21 is provided is given, and when the roller 13 runs to the connecting parts at two sides from the inner edge of the limiting part respectively, the up-and-down reciprocating motion of the piston mechanism is realized; when more accommodation grooves 21 are provided, the output of the rotary engine can be increased.

Example 4: with reference to FIGS. 3 and 6

Compared with the above-described embodiment, the difference is that the exhaust ports 8 are provided in the cylinder head 3 on the side of the first seal plate 5 that is formed away from the combustion chamber 14, and adjacent exhaust ports 8 are spaced by the distance of two first seal plates 5; set up gas vent 8 like this, after second closing plate 11 forms combustion chamber 14 with first closing plate 5, the combustion chamber 14's usage space can be enlarged to the back that the combustible gas expands, avoids the direct discharge cylinder 4 of insufficient combustion's gas to make full use of combustible gas internal energy, the increasing of heat efficiency.

Example 5: with reference to FIGS. 3, 4, 6 and 7

Compared with the above embodiment, the difference is that sealing devices are arranged between the rotor 2 and the cylinder cover 3, between the first sealing plate 5 and the concave part 20, and between the second sealing plate 11 and the cylinder 4; the sealing device plays a role of a periodic reciprocating piston mechanism to form secondary sealing outside oil film sealing of the combustion chamber 14, so that air leakage of the cylinder 4 of the combustion chamber 14 is avoided, and the thermal efficiency of combustible gas after combustion and expansion is improved. The elastic part 12 is a pressure spring which is an energy accumulator and has the function of storing energy, and when the roller 13 rolls from the lower arc section 101 to the connecting section 102, the energy stored by the pressure spring can be released instantly, so that the second sealing plate 11 is driven to be matched with the cylinder 4; when the roller 13 rolls along the connecting section 102 to the lower arc section 101, the pressure spring presses down to store energy, and drives the second sealing plate 11 to contract into the accommodating groove 21, so that the piston mechanism forms a periodic reciprocating motion.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (10)

1. A rotary engine is characterized by comprising

A main shaft (1), a rotor (2), a cylinder cover (3), a base (9), a piston mechanism and a roller (13),

the rotor (2) is a wheel-shaped body with an arc-shaped concave part (20) in the circumferential direction, the wheel-shaped body is arranged on the main shaft (1), and at least one radial accommodating groove (21) is arranged in the radial direction of the rotor (2);

a cylinder head (3) which is a thin-walled body having an arc-shaped convex portion (30) in the circumferential direction and is arranged on the rotor (2), wherein when the cylinder head (3) is arranged on the rotor (2), a cylinder (4) in which an annular seal is formed between the concave portion (20) and the convex portion (30); first sealing plates (5) matched with the contours of the cylinders (4) are arranged on the cylinder cover (3) in the radial direction, the number of the first sealing plates is the same as that of the accommodating grooves (21), an air inlet pipe (6), an oil injection pipe (7) and an ignition device are arranged on each first sealing plate (5), and an exhaust port (8) is formed in the cylinder cover (3) between every two adjacent first sealing plates (5);

the spindle (1) is arranged on the base (9), and limiting plates (10) which are fan-shaped and not larger than the number of the accommodating grooves (21) are arranged on the inner walls of the two sides of the base (9) connected with the spindle (1);

the piston mechanism is arranged in the accommodating groove (21), the piston mechanism comprises a second sealing plate (11) matched with the profile of the cylinder (4), an elastic piece (12) and a roller (13), one end of the elastic piece (12) is connected to the bottom of the second sealing plate (11), and the other end of the elastic piece is connected to the main shaft (1);

the rollers (13) are arranged on two sides of the second sealing plate (11) and can slide along the inner periphery of the limiting plate (10), so that the piston mechanism can do periodic intermittent reciprocating motion in the accommodating groove (21), and a combustion chamber (14) is formed between the second sealing plate (11) and the first sealing plate (5) when the piston mechanism moves upwards.

2. The rotary engine of claim 1, wherein: the outline of the cylinder (4) is oval.

3. The rotary engine of claim 1 or 2, wherein: the holding tank (21) sets up to 1 ~ 4, and corresponding first closing plate (5) and piston mechanism quantity set up rather than corresponding.

4. The rotary engine of claim 1 or 2, wherein: the exhaust ports (8) are arranged on the cylinder cover (3) of the side, formed away from the combustion chamber (14), of the first sealing plate (5), and the adjacent exhaust ports (8) are spaced by the distance between the two first sealing plates (5).

5. The rotary engine of claim 3 wherein: the exhaust ports (8) are arranged on the cylinder cover (3) of the side, formed away from the combustion chamber (14), of the first sealing plate (5), and the adjacent exhaust ports (8) are spaced by the distance between the two first sealing plates (5).

6. The rotary engine of claim 1 or 2, wherein: sealing devices are arranged between the rotor (2) and the cylinder cover (3), between the first sealing plate (5) and the concave part (20), and between the second sealing plate (11) and the cylinder (4).

7. The rotary engine of claim 3 wherein: sealing devices are arranged between the rotor (2) and the cylinder cover (3), between the first sealing plate (5) and the concave part (20), and between the second sealing plate (11) and the cylinder (4).

8. The rotary engine of claim 4 wherein: sealing devices are arranged between the rotor (2) and the cylinder cover (3), between the first sealing plate (5) and the concave part (20), and between the second sealing plate (11) and the cylinder (4).

9. The rotary engine of claim 5, wherein: sealing devices are arranged between the rotor (2) and the cylinder cover (3), between the first sealing plate (5) and the concave part (20), and between the second sealing plate (11) and the cylinder (4).

10. The rotary engine of claim 1 or 2, wherein: the elastic piece (12) is a pressure spring.

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