RU2375582C1 - Piston machine with shortened working cycle - Google Patents

Abstract

FIELD: engines and pumps.

SUBSTANCE: proposed machine relates to stationary or mobile compressors or internal combustion engines. It consists of housing 1, piston 2, crank 3, piston block shaft 4, toothed wheel 5 of piston block shaft, and toothed wheel 6 of power take-off or feed shaft. Piston block shaft is in gearing with the latter. Wheel (7, 9) feature additional coaxial active profiles in contact between themselves. Piston block wheel (7) features additional profile representing tooth (8). Height of the latter makes two or more heights of tooth of the main gearing, relative to tooth slot circumference. Power take-off or feed shaft wheel (9) features additional profiles (10, 11) representing mating slot. Additional coaxial active profiles, in contact when running in opposite directions, can be spaced apart along lengthwise axes of gearing wheels.

EFFECT: shortened working cycle, higher efficiency and output.

2 cl, 2 dwg

Description

A piston machine with a reduced duty cycle time (hereinafter referred to as a piston machine) refers to reciprocating compressors or internal combustion engines of stationary or mobile design.

Closest to the invention in technical essence is a piston machine with a planetary gear mechanism for converting rotational motion into translational, and vice versa (RU 2299989 C2, IPC P01B 9/00).

The disadvantages of this machine and similar piston machines with a crankshaft is the uniform rotation of the shaft of the piston group. The essence of the disadvantage is that the main work of such machines occurs when the piston passes the top dead center. In the remaining parts of the working cycle, the piston group is not loaded or does not perform work at all. As a result, inefficient use of working cycle time and limited performance of the piston machine (number of piston strokes per unit time).

The objective of the invention is to increase the performance of the piston machine by reducing the time of the duty cycle in lightly loaded areas.

The problem is solved by adding to the gearing connecting the shaft of the piston group of the piston machine with the shaft of selection or supply of power, additional coaxial conjugate active profiles.

The invention is illustrated by drawings. Figure 1 shows a cut piston machine with a reduced duty cycle without a cylinder. Figure 2 close-up shows the gearing of the shaft of the piston group with the shaft of selection or supply of power.

The piston machine consists of a housing 1, a piston 2, a crank 3, a shaft of a piston group, for example a crankshaft 4, a gear wheel on a shaft of a piston group 5. a gear wheel on a power take-off shaft 6 or power supply 6 (FIG. 1). The gear wheel 7 (figure 2) of the main engagement on the shaft of the piston group has additional active profiles in the form of a high tooth 8 (the height of the profile is two or more than the height of the tooth of the main engagement relative to the circumference of the troughs). The gear wheel 9 of the main engagement on the power take-off or supply shaft has an additional active profile in the form of a response groove for rotation in one direction 10 and an additional active profile for rotation in the opposite direction 11.

When the shaft of the piston group 4 rotates, its gear 5 engages with the gear of the take-off shaft or power supply 6 teeth of the wheels 7 and 9 of the main gearing for most of the duty cycle. When the piston 2 moves near the top dead center, coaxial conjugate additional active profiles 10 or 11 of the gear 6 work, which contact the active profiles in the form of a high tooth 8 of the gear 5, slowing down the movement of the piston 2. To pair the active profiles of the wheels 7, 9 of the main gearing and additional active profiles 10, 11 and 8, the part of the teeth of the wheels 7, 9, for example wheels 7, is removed.

This design of wheels 5 and 6 allows the piston engine to work in the calculated mode near the top dead center, and the rest of the cycle, lightly loaded with compressors and internal combustion engines, pass faster. The total cycle time decreases, the number of piston strokes per unit time increases proportionally, and accordingly, the capacity of the internal combustion engine or the productivity of the compressor increases.

Diversity of active profiles in the form of high teeth 8 and active profiles 10, 11 in contact with them along the longitudinal axis of the corresponding wheels 5 and 6 allows to increase the strength of the teeth at the root by increasing their thickness. Without spacing along the axles of the wheels, these profiles look like a single tooth profile and a single groove profile.

The performance of the invention is tested on the layout and computer.

Claims (2)

1. A piston machine with a reduced working cycle time, the piston group shaft of which is connected to the gear selection or power supply shaft by gearing, characterized in that the gear wheels have additional coaxial conjugate active profiles in contact with each other: on the piston group wheel in the form of a high tooth (height profile two or more tooth heights of the main engagement relative to the circumference of the depressions), and on the wheel of selection or supply of power in the form of a response groove. 2. The piston machine according to claim 1, characterized in that the additional coaxial conjugated active profiles contacting each other during rotation in opposite directions are spaced along the longitudinal axis of the respective gear wheels.

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