RO131339B1 - Rotary engine with resilient pistons - Google Patents

Description

The invention relates to a rotary engine with elastic pistons, intended for the automotive industry, but also in other industrial activities, such as pump, compressor or vacuum pump.

CH 418726 A, which discloses an air-cooled rotary piston engine, consisting of a stationary cylindrical housing, whose inner surface is oval in cross-section, and side walls defining a space, are known from the prior art. inside where there are one or more pistons, a power output shaft is centrally mounted, some arms are connected to the shaft and pistons that slide on the oval surface of the engine housing, an intake channel ensures the supply of air-gas mixture. , an exhaust channel ensures the exhaust of the flue gas, and a flywheel is mounted on the output shaft, and is provided with a few blades to ensure the internal cooling of the engine.

Also known is WO 2004020791 A1, which discloses a rotary-type endothermic motor, consisting of a kinematic mechanism based on a rotor comprising two parts of a semi-cylindrical shape, and rotating in the same direction on two adjacent axes, with the interposition of a slider, and the two mentioned parts being included in the gaps of a stator in which a combustion chamber and an opposite exhaust pipe are provided, for the flue gases, the engine realizing an expansion stroke capable of exploiting the combustion power significantly, while a pipeline provides the suction stroke, supported by the ability of the two semi-cylindrical parts to deviate circumferentially, and ensures the subsequent compression stroke of a fuel mixture.

Also known is document RU 2386824 C1, which discloses a rotary motor formed by an outer casing, provided with directional channels of suction / outlet fluid, and centrally, an oval profile, which extends dimensional in width, in the respective oval being coaxially a broad axis, comprised of a rotor having two outer concavities, with an interval on both sides of an axis of symmetry, in which two convex pistons slide by rotation, due to aiding internal mechanisms, obtaining spaces with unequal volumes; two outer covers comprise and close the housing where various internal mechanisms conjugated with each other make contact with those pistons, resulting in rotating chambers with unequal volumes, separated by sliding piston plates, radially on the inner surface of the oval, where they occur. various fluid or combustion processes directed through suction-outlet channels contained in the housing.

The disadvantages of these rotary engines are represented by a complicated construction, low operating time, vibration operation, high fuel consumption, poor sealing between the inner compartments and considerable wear of the interior parts.

The technical problem that the invention solves is to reduce the thermal deformations, to improve the cooling system, to seal between the chambers and the rotary lubrication plates of a rotary motor, to lubricate a rotary motor.

The rotary piston engine according to the invention removes the abovementioned disadvantages by the fact that it consists of a housing provided with directional channels of suction / outlet fluid, an oval or elliptical profile is provided in the housing, and a central shaft is mounted. coaxial with the respective profile, and is characterized by the fact that a rotor with arms having some recesses is fixed on the central axis, on the rotor are symmetrically contained concave recesses, in which they slide and hang some curved, convex elastic pistons, having some recesses, some rotary plates provided with angular chambers are fixedly fixed with an axial clearance on the central axis, the rotary plates comprising in the lateral parts the rotor assembly formed by the central axis, the rotor with arms and curved elastic pistons, the rotor assembly determining in the oval profile, uneven volume chambers which participates in rotation in the internal fluidic processes and combustion, through the suction / outlet directional channels from the housing.

RO 131339 Β1

The convex curved elastic pistons are each made up of two main and two secondary convex semi-pistons, these being joined by a sliding semicircular hinge, which penetrates from the main convex semi-piston into a similarly curved release 3 of the secondary convex semipiston, having between the convex half-pistons some springs that create a contact pressure on the inner surface of the oval profile, by means of 5 solid or removable linear tips from the convex curved elastic pistons, causing the separation and sealing of the chambers with unequal volumes. 7 In a preferred example, the rotary plates are composed of internal cooling and lubrication chambers, angular chambers, an axial pressure bearing and some sealing elements 9 for sealing against the oval profile, and some axes with eccentric, adjustable, and fixed or semi-circular rollers or plates penetrate into semicircular channels of the main convex half-piston, determining in the concave places of the rotor only a pendulum movement relative to the rotary plates, changing the hot spot formed in the respective 13 plates. rotary.

The angular alveoli of the rotary plates are arranged in four diametrically opposed groups, 15 and progressively penetrate the chambers with unequal volumes, participating in the improvement of the combustion process, in the compression and combustion chamber increasing the rotational moment of the rotor assembly 17.

Curved elastic pistons contain a curved profile that joins with a groove of 19 concave rotor housings, where they slide through the joint, or on some profiled tips of the rotor, where they slide by joining with channels of the curved elastic pistons. 21

The rotary plates are integral with a toothed crown, and are in outer gear with a shaft and a gear, determining in the rotational movement the central axis, thus changing the hot spot formed on the rotary plates, in front of the combustion chambers, reducing the deformations. heat. 25

The rotary engine with elastic pistons, according to the invention, has the following advantages:

- works without vibration, the engine is balanced and the cold start fast; 27

- simple construction and safe operation;

- economic maintenance and large-scale applicability; 29

- considerable power-to-weight ratio and reduced wear;

- light components, use of modern technologies, ceramization, extrusion and precise casting;

- reduced consumption of the fluids used, and reduced thermal deformations. 33

Further embodiments are given below, in connection with FIG. 1 ... 3 ', representing: 35

FIG. 1, partial section view of the rotary motor assembly variant A;

FIG. 1 ', view with partial sections of the rotary motor assembly variant A; 37

FIG. 2, view and cross-section in a rotating plate with alveoli, according to the planes

B-B; B'-B '; B-B; 39

FIG. 3, partial section through the rotary motor, according to the planes: A-A of fig. 1; B-B of FIG. 2; C-C of FIG. 1'; 41

FIG. 3 ', outer rotary plate gear, partial section.

The rotary engine with elastic pistons according to the invention, in a first embodiment, is composed of a fixed outer housing 1, with directional suction and outlet channels a and a ', a central symmetrical oval profile b, coaxially an axle 2 broad, which supports a 45 rotor 3 with four arms and some 3 'recesses, joined together by the symmetrical concave c holes, in which the convex curved elastic pistons 4 are included and slide, having some recesses 47

RO 131339 Β1

4 ', each of the convex curved pistons 4 being formed by the main d and secondary half pistons d', joined by means of a sliding semicircular hinge e, which penetrates into the similarly curved release e ', and of arcs f, which extend the semi-pistons d and d 'on the inner surface I ellipse b, thus obtaining a unitary elastic piston 4.

The assembly formed by the axis 2, the rotor 3 with arms and the elastic pistons 4 is included in the lateral parts of the rotary plates 5, contained jointly on the axis 2 with a minimum axial clearance, the hinges h, the sealing elements h 'and h, ensuring the contact with the surface. lateral of the oval b of the housing 1, forming inside the oval b chambers with unequal volumes j and j 'seals, separated in rotation by the removable tips k or simple k', from the elastic pistons 4, radially pressed by the springs f, on the inner surface ma oval b; h cells participate in the processes of progressive combustion, improving them, the result being an increased motor moment.

The axes with adjustable eccentric n and roll n ', or the semicircular fixed plates are contained diametrically in the rotary plates 5, and penetrate into the semicircular channels p of the main half-pistons d, supporting them in rotation and pendulum, on the concave surfaces of the c-locks in the rotor. 3; Thus a unitary and homogeneous rotor assembly I was formed, which rotates the hot spot from the rotary plates 5 by rotation.

The outer covers 2 ', composed of the inner cooling chambers r, the bearing s fixed to the axis 2, in which are contained the channels t through which the cooling fluid circulates, closes the housing 1, and the screws u make the adjustment of the axial games of the rotary plates 5, a of the bearing i in relation to the lateral surface of the oval b, and of the sealing elements h.

The rotary motor with elastic pistons, in a second embodiment, consists in that the elastic pistons 4 contain, at the bottom, a curved v-profile, which slides in the z channels of the concavities of the c-slot; otherwise, the rotor 3 contains the profiled tips ν 'on which the elastic pistons 4 slide with some channels z'; also, the rotary plates 5, mounted on the shaft 2, contain integrally the toothed crown 7, in gear with the shaft 7 'and the gear 7', the plates 5 rotating with the shaft 2, changing the hot spot and from the sides of the combustion chamber. , thus reducing thermal deformations; cold start improves.

Claims (6)

Claims 1 1. Rotary engine with elastic pistons, consisting of a housing (1) provided with 3 directional channels of suction / outlet fluid (a, a '), an oval or elliptical profile (b) is provided in the housing (1), and a central shaft (2) is mounted coaxially with the respective profile (b), characterized in that a rotor (3) with arms having openings (3 ') is fixed on the central shaft (2), on the rotor ( 3) are symmetrically contained some concave seats (c) in which they slide and hang - 7 link some curved, convex elastic pistons (4), having some openings (4 '), rotary plates (5) provided with angular chambers (h) are fixed with an axial clearance on the central axis 9 (2), the rotary plates (5) comprising in the lateral parts the rotor assembly (I) formed by the central axis (2), the rotor (3) with arms and the elastic pistons curved, convex ( 4), the rotor assembly 11 (I) determining in the oval profile (b) some chambers of unequal volumes (j, j '), which participate in n rotation to the internal fluid and combustion processes through the suction / evacuation directional channels (a, a ') of the housing (1). 2. Rotary motor with elastic pistons, according to claim 1, characterized in that the curved elastic pistons, convex (4), each consist of two main convex semi-pistons (d) and two secondary (d '), these being joined by a sliding circular semi-17 hinge (e), which enters from the main convex half-piston (d) into a similar curved clearance (e '), from the secondary convex half-piston (d'), having between the convex half-pistons (d, d ') springs (f) which create a contact pressure on the inner surface (m) of the oval profile (b), by means of solid (k) or removable (k') linear ends, from floor-21 convex curved elastic straps (4), causing separation and sealing of chambers with unequal volumes (j, j '). 2. 3 3. Rotary piston engine according to claim 1, characterized in that the rotary plates (5) are composed of internal cooling and lubrication chambers (g), 25 angular chambers (h), an axial pressure bearing (i). ) and some sealing elements (h ', h) with respect to the oval profile (b), and some axis with eccentric (n), adjustable, and some rollers (n') or 27 fixed, semicircular (o) plates, penetrate into semicircular channels (p) of the main convex half-piston (d), determining in the concave seats (c) of the rotor (3) only a movement of 29 pendulums relative to the rotary plates (5), changing the hot spot, formed on the respective rotary plates (5). 31 4. Rotary piston engine according to Claim 3, characterized in that the angular chambers (h) of the rotary plates (5) are arranged in four diametrically opposed groups 33, and progressively enter the chambers with unequal volumes (j, j '). , participating in the improvement of the combustion process, in one of the chambers with unequal compression volume, combustion 35 increasing the rotational moment of the rotor assembly (I). 5. Rotary piston engine according to claim 1, characterized in that 37 the curved elastic pistons (4) contain a curved profile (v) which is joined by a channel (z) from the concave recesses (c) of the rotor (3). where it slides through the joint; in another way, on 39 profiled tips (ν ') of the rotor (3), where they slide by joining with channels (z') of the curved elastic pistons (4). 41 6. Rotary piston engine according to claim 3, characterized in that the rotary plates (5) are integral with a gear crown (7), and are in outer gear 43 with a shaft (7 ') and a gear wheel (7). '), determining in the rotation motion the central axis (2), thus changing the hot spot formed on the rotary plates (5), in front of the 45 combustion chambers, reducing the thermal deformations, when starting cold.