Drive mechanism for rotary compressors or pumps

Abstract

Drive mechanism for rotary compressor or pump that consists of a casing (1) formed by two housings where two diametrically opposed cylinders (2), where the pistons (3) slide, are coupled, each of the pistons being attached by means of a connecting rod (5) to the end of a lever (4) which pivots about the other end (9), located on the periphery of the casing (1) and is forced by the journal of a crankshaft (6) that slides along a slot (7), made in the central area of this lever, and is operated by an external mechanism, the whole assembly being able to rotate about the crankshaft, which remains static and coupled to the structure or support and generates a linear piston cycle at each revolution.

Claims

1. A pump or rotary compressor assembly comprising: a crankcase configured to rotate on a central shaft and provided with housings to couple two diametrically opposed cylinders, the crankcase including: two shafts located within a peripheral area of the crankcase and opposite one another; two levers each rotatingly connected at a first end to a respective shaft and including a connection point at a second end thereof and a slotted area disposed between the first end and the second end; two connecting rods, each having a first end connected to a respective piston and a second end rotatingly connected to the second end of one of the respective levers; two cylinders each to house a respective piston and including a cylinder head thereon and suction and discharge valves; and a crankshaft including a journal disposed at opposite ends thereof, each journal being disposed within a slotted area of a corresponding lever, the crankshaft remaining statically connected to a support and the entire assembly rotating on the support when a torque is applied to the crankcase to displace the journals within the slotted areas of the corresponding levers to displace a corresponding connecting rod such that one complete rotation of the crankcase causes a complete cycle of the pistons.

Description

DETAILED DESCRIPTION AND PREFERRED EMBODIMENT OF THE INVENTION

(1) This new design of compressor comprises two housings making up the casing (1), where the cylinders (2), in which the pistons (3) slide, are coupled, the latter being attached to the end of the lever (4) by means of the connecting rod (5), wherein inside said lever a slot (7) has been machined, through which the crankshaft journals (6) slide, and the other end pivots about the shaft (9) located in the peripheral area of the casing. In the cylinder head (8) the suction and exhaust valves for the operation of the compressor or vacuum pump have been arranged. Aspiration is performed directly from the cylinder head through a filter attached to the inlet thereof and the gas is discharged through a duct connecting the outlet of the cylinder head to the front axle (10) and from there, through a rotating seal to the outside for its subsequent use or storage.

(2) The assembly can be housed in a frame and rotate on bearings that are attached both to the front axle (10) and to the pulley supporting shaft (14). The crankshaft can be fixed directly to the frame or supporting structure of the assembly by any means that prevent its rotation or through a brake or clutch (13), in such a way that it is possible to lock or release it at will. (FIG. 2A)

(3) The lubrication proposed for this mechanism derives from an external reservoir by means of a pressurized system and the recovery is made by means of a impeller suction pump (12) actuated by the lever (4), with both the entrance and the recovery of the used agent being made through the crankshaft.

DESCRIPTION OF DRAWINGS

(4) In order to complement the description being made and to assist to a better understanding of the features of the invention, a set of drawings is attached to the present specification as an integral part thereof, wherein in an illustrative and not limiting way, the following has been represented:

(5) FIG. 1.shows a plan view of the arrangement of the different elements in the casing.

(6) FIG. 2.shows a section between the shafts (9) with the crankshaft being aligned with them.

(7) FIG. 3.shows a section of a solid view where the inside of a cylinder and a braking mechanism coupled to the crankshaft can be seen.

(8) FIG. 4.shows the improvement of the interrelation of the power-resistance arms with a slight diameter increase of the crankshaft.

(9) FIG. 5.shows the extension in the piston stroke with a diameter increase of the crankshaft.

(10) FIG. 6.shows the variation in the lever arms during the assembly rotation.

(11) In view of the figures and the above description, it does not seem necessary to make this descriptive specification more extensive so that a person skilled in the art can understand the scope of the same and the advantages arising from it.